Method and device for automatic adjustment of clamping force of injection molding machine and server

Abstract

The application provides an automatic adjustment method and device for mold locking force of an injection molding machine and a server, and relates to the technical field of injection molding machine production. The method comprises the following steps: obtaining a preset mold locking pipeline pressure difference and a target mold locking tonnage range of the injection molding machine, collecting system pressure during high-pressure mold locking of the injection molding machine through a pressure sensor arranged in an oil cylinder of the injection molding machine, analyzing and processing the mold locking pipeline pressure difference and the system pressure through a preset mold locking force calculation model to determine the mold locking force at the current time of the injection molding machine, analyzing and processing the target mold locking tonnage range and the mold locking force through a preset automatic adjustment model to determine an automatic adjustment amount, and controlling mold locking adjustment gears to perform fine adjustment according to the automatic adjustment amount to adjust the mold locking force to the target mold locking tonnage range. The application can significantly improve the product qualification rate and production efficiency of the injection molding machine.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of injection molding machine production, and in particular to an automatic adjustment method and device for mold clamping force of an injection molding machine and a server. BACKGROUND

[0002] Currently, in the production process of an injection molding machine, the mold clamping force is prone to decrease slowly due to long-time automatic production, thereby causing unqualified products such as flash. The related technology proposes that the operator can manually check, and when it is found that the unqualified products or machine alarms are caused by the decrease of the mold clamping force, the machine needs to be switched from the automatic mode to the manual mode, and in the manual mode, the mold clamping force of the machine is adjusted larger through the manual mold adjustment button, and then several products are repeatedly tried to be produced to check whether they are qualified. If they are not qualified, the above-mentioned manual adjustment steps need to be repeated, and the mold clamping force is manually adjusted larger again until the qualified products can be produced. Therefore, the scheme consumes more time and is prone to affect the production progress, and since the manual adjustment cannot be monitored in real time, the decrease of the mold clamping force for a long time can affect the product qualification rate of the injection molding machine. SUMMARY

[0003] In view of this, the present application aims to provide an automatic adjustment method and device for mold clamping force of an injection molding machine and a server, which can significantly improve the product qualification rate and production efficiency of the injection molding machine.

[0004] In a first aspect, an embodiment of the present application provides an automatic adjustment method for mold clamping force of an injection molding machine. The method comprises: acquiring a preset mold clamping pipe pressure difference and a target mold clamping tonnage range of the injection molding machine, and collecting system pressure of the injection molding machine during high-pressure mold clamping through a pressure sensor arranged in an oil cylinder of the injection molding machine; performing mold clamping force analysis and processing on the mold clamping pipe pressure difference and the system pressure through a preset mold clamping force calculation model to determine the mold clamping force at the current time of the injection molding machine; performing adjustment amount analysis and processing on the target mold clamping tonnage range and the mold clamping force through a preset automatic adjustment model to determine an automatic adjustment amount, so as to control a mold clamping adjustment gear to perform fine adjustment processing according to the automatic adjustment amount, and adjust the mold clamping force to the target mold clamping tonnage range.

[0005] In an embodiment, the step of determining the mold clamping force at the current time of the injection molding machine through the preset mold clamping force calculation model based on the mold clamping pipe pressure difference and the system pressure during high-pressure mold clamping of the injection molding machine comprises: determining a mold clamping cavity pressure based on the system pressure and the mold clamping pipe pressure difference during high-pressure mold clamping of the injection molding machine; and performing mold clamping force analysis and processing on the mold clamping cavity pressure through the preset mold clamping force calculation model to determine the mold clamping force at the current time of the injection molding machine.

[0006] In an embodiment, the step of determining the mold clamping cavity pressure based on the system pressure and the mold clamping pipe pressure difference during high-pressure mold clamping of the injection molding machine comprises: determining the difference between the system pressure and the mold clamping pipe pressure difference as the mold clamping cavity pressure.

[0007] In an embodiment, the step of determining the clamping force of the injection molding machine at the current time by clamping force analysis processing on the clamping cavity pressure through the preset clamping force calculation model comprises: obtaining the pre-design calculation parameters corresponding to the injection molding machine model size and oil path difference, and bringing the calculation parameters and the clamping cavity pressure into the preset clamping force calculation model to determine the clamping force, wherein the preset clamping force calculation model is: Y = AX 2 + BX + C; wherein X is the clamping cavity pressure, Y is the clamping force, and A, B and C are all pre-design calculation parameters.

[0008] In an embodiment, the step of determining the automatic adjustment amount by adjustment amount analysis processing on the target clamping tonnage range and the clamping force when the clamping force after high-pressure clamping is detected to be outside the target clamping tonnage range comprises: determining the clamping force adjustment amount by preset automatic adjustment model on the target clamping tonnage range and the clamping force, wherein the clamping force adjustment amount represents the minimum adjustment amount for adjusting the clamping force to be within the target clamping tonnage range; and determining the automatic adjustment amount corresponding to the clamping adjustment gear according to the clamping force adjustment amount and the specification information of the clamping adjustment gear.

[0009] In an embodiment, after the step of determining the automatic adjustment amount corresponding to the clamping adjustment gear, the method comprises: sending the automatic adjustment amount to the controller of the clamping adjustment gear to perform the mold adjusting-in operation or the mold adjusting-out operation before the mold closing to fine-tune the clamping force, and receiving the mold thickness change signal sent by the peripheral mold adjusting electric eye to determine that the automatic adjustment of the clamping force of the injection molding machine is completed, wherein the mold adjusting-in operation is used to increase the clamping force, and the mold adjusting-out operation is used to decrease the clamping force.

[0010] In an embodiment, the method further comprises: when the clamping force is greater than the preset pressure threshold, the rotation amplitude of the clamping adjustment gear and the mold thickness change amount are reduced, and if the mold thickness change amount is less than the monitoring range of the peripheral mold adjusting electric eye, the adjustment time is monitored, and when the automatic adjustment time of the clamping force is greater than the preset time threshold, it is determined that the automatic adjustment of the clamping force of the injection molding machine is completed.

[0011] In a second aspect, the embodiment of the present application further provides an automatic adjustment device for locking force of an injection molding machine, which comprises: a data acquisition module, configured to acquire a preset locking pipeline pressure difference and a target locking tonnage range of the injection molding machine, and collect system pressure of the injection molding machine during high-pressure locking through a pressure sensor arranged in an oil cylinder of the injection molding machine; a locking force analysis module, configured to analyze and process the locking pipeline pressure difference and the system pressure through a preset locking force calculation model, and determine the locking force of the injection molding machine at the current time; and an automatic adjustment module, configured to analyze and process the target locking tonnage range and the locking force through a preset automatic adjustment model, determine an automatic adjustment amount, and control a locking adjustment gear to perform fine adjustment according to the automatic adjustment amount, so as to adjust the locking force to the target locking tonnage range.

[0012] In a third aspect, the embodiment of the present application further provides a server, comprising a processor and a memory, wherein the memory stores computer executable instructions capable of being executed by the processor, and the processor executes the computer executable instructions to implement the method of any one of the first aspect.

[0013] In a fourth aspect, the embodiment of the present application further provides a computer readable storage medium, which stores computer executable instructions, and the computer executable instructions, when called and executed by a processor, cause the processor to implement the method of any one of the first aspect.

[0014] The embodiment of the present application brings the following beneficial effects:

[0015] The automatic adjustment method, device and server for locking force of an injection molding machine provided by the embodiment of the present application, after acquiring a preset locking pipeline pressure difference and a target locking tonnage range of the injection molding machine, and collecting system pressure of the injection molding machine during high-pressure locking through a pressure sensor arranged in an oil cylinder of the injection molding machine, analyzes and processes the locking pipeline pressure difference and the system pressure through a preset locking force calculation model, determines the locking force of the injection molding machine at the current time, analyzes and processes the target locking tonnage range and the locking force through a preset automatic adjustment model, determines an automatic adjustment amount, and controls a locking adjustment gear to perform fine adjustment according to the automatic adjustment amount, so as to adjust the locking force to the target locking tonnage range. The embodiment of the present application can obtain the locking force through algorithm processing of the system pressure sensor data, and automatically adjust and correct the locking force by monitoring the locking force deviation, thereby significantly improving the product qualification rate and production efficiency of the injection molding machine.

[0016] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application. The objects and other advantages of the present application will be realized and achieved by the structures particularly pointed out in the description, claims and drawings.

[0017] In order to make the above objectives, characteristics and advantages of the present application more apparent, comprehensible and easier to understand, the following will describe a preferred embodiment in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to make the above objectives, characteristics and advantages of the present application more apparent, comprehensible and easier to understand, the following will describe a preferred embodiment in detail with reference to the accompanying drawings.

[0019] Figure 1 A flowchart of an automatic adjustment method of a mold clamping force of an injection molding machine according to an embodiment of the present application;

[0020] Figure 2 A flowchart of an automatic adjustment method of a mold clamping force of an injection molding machine according to an embodiment of the present application;

[0021] Figure 3 A flowchart of an automatic adjustment method of a mold clamping force of an injection molding machine according to an embodiment of the present application;

[0022] Figure 4 A flowchart of an automatic adjustment method of a mold clamping force of an injection molding machine according to an embodiment of the present application;

[0023] Figure 5 A flowchart of an automatic adjustment method of a mold clamping force of an injection molding machine according to an embodiment of the present application; DETAILED DESCRIPTION

[0024] In order to make the above objectives, characteristics and advantages of the present application more apparent, comprehensible and easier to understand, the following will describe a preferred embodiment in detail with reference to the accompanying drawings.

[0025] At present, the customer production process occasionally appears due to automatic production lock-in force decreases, resulting in production of unqualified products, the prior art needs the operator to spend a certain amount of time to troubleshoot and solve the problem, then continue to produce, specifically, in the injection molding machine production process, due to long time automatic production, it is easy to cause the lock-in force to slowly decrease, thereby causing the product flash and other unqualified problems, the related technology proposes that the operator can manually troubleshoot, when the product unqualified or machine alarm caused by the lock-in force is found, the machine needs to be switched from automatic mode to manual mode, and in the manual mode, the machine lock-in force is increased by manually adjusting the mold key, and then the product is repeatedly tested, to check whether it is qualified, if not, the above-mentioned manual adjustment steps still need to be repeated, the lock-in force is manually increased again, until the qualified product is produced, therefore, the scheme consumes more time, which easily affects the production progress, and because manual cannot achieve real-time monitoring, when the lock-in force is used for a long time, it is easy to affect the product qualification rate of the injection molding machine, based on this, the injection molding machine lock-in force automatic adjustment method, device and server provided by the embodiment of the application can greatly reduce the abnormal situation in the injection molding machine production process, improve the production efficiency, and save the troubleshooting time of solving the abnormal situation.

[0026] Referring to Figure 1 The flowchart of the injection molding machine lock-in force automatic adjustment method is shown, and the method mainly includes the following steps S102 to S106:

[0027] Step S102, the preset lock-in pipe pressure difference and target lock-in tonnage range of the injection molding machine are acquired, and the system pressure during high-pressure locking of the injection molding machine is collected through the pressure sensor arranged in the oil cylinder of the injection molding machine.

[0028] Step S104, the lock-in force is analyzed and processed on the lock-in pipe pressure difference and system pressure through the preset lock-in force calculation model, to determine the lock-in force of the injection molding machine at the current time, wherein the lock-in force refers to the locking force applied to the mold after the injection molding machine is closed, and the injection force is used to overcome the mold opening force of the melt in the cavity, when the raw material is injected into the mold cavity at high pressure, a mold opening force is generated, therefore, the locking unit of the injection molding machine must provide sufficient "lock-in force" to prevent the mold from being opened.

[0029] Step S106, the target clamping tonnage range and the clamping force are adjusted by a preset automatic adjustment model, and the automatic adjustment amount is determined, so as to control the clamping adjustment gear to perform fine adjustment according to the automatic adjustment amount, and the clamping force is adjusted to the target clamping tonnage range. In an embodiment, the clamping force after high-pressure clamping is used as a data source to make a logical judgment. When the clamping force after high-pressure clamping exceeds the target clamping tonnage deviation range, a clamping force adjustment action is performed before the next mold closing. Then, the clamping force during high-pressure clamping is continuously monitored. If the clamping force after high-pressure clamping still exceeds the target clamping tonnage deviation range, the clamping force adjustment is continuously performed before the next mold closing. The whole process is completed in an automatic mode, and does not affect normal production. Generally, after the clamping force exceeds the target deviation range, only a few automatic adjustments are needed to correct the clamping force to return to the normal range, and the automatic adjustment efficiency is high.

[0030] The automatic adjustment method of the clamping force of the injection molding machine provided by the embodiment of the application can obtain the clamping force through algorithm processing of the system pressure sensor data, and automatically adjust and correct the clamping force by monitoring the clamping force deviation, thereby significantly improving the product qualification rate and production efficiency of the injection molding machine.

[0031] Referring to the specific flowchart of the automatic adjustment method of the clamping force of the injection molding machine shown in the figure, the embodiment of the application further provides an implementation of automatically adjusting the clamping force of the injection molding machine. For details, refer to (1) to (2) as follows: Figure 2

[0032] (1) Real-time monitoring of the system pressure during high-pressure clamping, and converting the system pressure into the clamping force through an algorithm. Specifically, it includes the following (A) to (B):

[0033] (A) Determining the clamping cavity pressure according to the system pressure during high-pressure clamping of the injection molding machine and the clamping line pressure difference. In an embodiment, the difference between the system pressure and the clamping line pressure difference is determined as the clamping cavity pressure, that is, the clamping cavity pressure (X) = the pressure measured by the system pressure sensor - the clamping line pressure difference.

[0034] (B) Analyzing and processing the clamping cavity pressure through a preset clamping force calculation model to determine the clamping force of the injection molding machine at the current time. In an embodiment, the pre-designed calculation parameters corresponding to the size and oil line difference of the injection molding machine model can be obtained, and the calculation parameters and the clamping cavity pressure are brought into the preset clamping force calculation model to determine the clamping force. The preset clamping force calculation model is:

[0035] Y = AX^2 + BX + C;

[0036] ​Wherein, X is the mold clamping cavity pressure, Y is the mold clamping force, A, B and C are all pre-design calculation parameters, the pipeline pressure difference of mold clamping and the ABC coefficient are different according to different machine size and oil circuit difference, and the corresponding parameters are obtained by calibration according to the actual mold clamping force and system pressure of the machine during the test run of the machine assembly, so only the data of the system pressure sensor needs to be collected to calculate the actual mold clamping force of the machine in the actual production of the machine.

[0037] (2) Determine whether the mold clamping force is within the target mold clamping tonnage range, if the mold clamping force is within the target mold clamping tonnage range, then close the mold for injection molding production, if the mold clamping force is not within the target mold clamping tonnage range, then adjust the mold clamping force before closing the mold, see Figure 3 The flowchart of the automatic mold clamping force adjustment before closing the mold is shown in FIG. 1, when the mold clamping force after high pressure mold clamping is monitored to be out of the target deviation range, a mold adjustment advance operation is inserted before the next mold closing to fine-tune the mold clamping force, and then the mold is closed to produce products, until the mold clamping force after high pressure mold clamping is monitored to be back to the normal range, the automatic mold clamping force adjustment action is no longer performed, at the same time, if the mold clamping force deviation is too large, an alarm will also be prompted, in detail, including the following (C) to (D):

[0038] (C) When the mold clamping force after high pressure mold clamping is detected to be out of the target mold clamping tonnage range, the target mold clamping tonnage range and the mold clamping force are processed by a preset automatic adjustment model to determine the mold clamping force adjustment amount, and according to the mold clamping force adjustment amount and the specification information of the mold clamping adjustment gear, the automatic adjustment amount corresponding to the mold clamping adjustment gear is determined, wherein the mold clamping force adjustment amount represents the minimum adjustment amount to adjust the mold clamping force to the target mold clamping tonnage range.

[0039] (D) Send the automatic adjustment amount to the controller of the mold clamping adjustment gear to perform a mold adjustment advance operation or a mold adjustment retreat operation to fine-tune the mold clamping force, and when the mold thickness change signal sent by the external mold adjustment electric eye is received, it is determined that the mold clamping force automatic adjustment of the injection molding machine is completed, wherein the mold adjustment advance operation is used to increase the mold clamping force, and the mold adjustment retreat operation is used to decrease the mold clamping force, in an embodiment, when the mold clamping force is greater than a preset pressure threshold, the rotation amplitude of the mold clamping adjustment gear and the mold thickness change amount are reduced, if the mold thickness change amount is less than the monitoring range of the external mold adjustment electric eye, the adjustment time is monitored, and when the automatic adjustment time of the mold clamping force is greater than a preset time threshold, it is determined that the mold clamping force automatic adjustment of the injection molding machine is completed.

[0040] In summary, the application only needs to borrow an algorithm to convert the system pressure into the clamping force for analysis and processing, so as to automatically monitor and identify abnormal conditions of the clamping force deviating from the target deviation range, and automatically adjust and correct the clamping force. The system pressure sensor is a standard configuration of the injection molding machine, so it does not need to be additionally installed with a clamping force sensor, thereby saving the hardware cost. The relatively accurate clamping force data can be obtained by using the existing system pressure sensor data for algorithm analysis, the entire process does not need human intervention, and the efficiency is higher than that of artificial discovery, investigation and problem solving, and the product qualification rate and production efficiency of the injection molding machine can be significantly improved.

[0041] For the automatic adjustment method of the clamping force of the injection molding machine provided by the foregoing embodiment, an embodiment of the application provides an automatic adjustment device for the clamping force of an injection molding machine, which is shown as a structural schematic diagram of an automatic adjustment device for the clamping force of an injection molding machine in Figure 4 The device comprises the following parts:

[0042] A data acquisition module 402 acquires a preset clamping pipe pressure difference and a target clamping tonnage range of the injection molding machine, and collects the system pressure of the injection molding machine during high-pressure clamping through a pressure sensor arranged in the oil cylinder of the injection molding machine.

[0043] A clamping force analysis module 404 performs clamping force analysis and processing on the clamping pipe pressure difference and the system pressure through a preset clamping force calculation model to determine the clamping force of the injection molding machine at the current time.

[0044] An automatic adjustment module 406 performs adjustment amount analysis and processing on the target clamping tonnage range and the clamping force through a preset automatic adjustment model to determine an automatic adjustment amount, so as to control the clamping adjustment gear to perform fine adjustment processing according to the automatic adjustment amount, and adjust the clamping force to the target clamping tonnage range.

[0045] The automatic adjustment device for the clamping force of the injection molding machine provided by the embodiment of the application can obtain the clamping force through algorithm processing of the system pressure sensor data, automatically adjust and correct the clamping force by monitoring the clamping force deviation, and thereby significantly improve the product qualification rate and production efficiency of the injection molding machine.

[0046] In an embodiment, when the step of performing clamping force analysis and processing on the clamping pipe pressure difference and the system pressure through a preset clamping force calculation model to determine the clamping force of the injection molding machine at the current time is performed, the clamping force analysis module 404 is further configured to: determine the clamping cavity pressure according to the system pressure and the clamping pipe pressure difference of the injection molding machine during high-pressure clamping; and perform clamping force analysis and processing on the clamping cavity pressure through a preset clamping force calculation model to determine the clamping force of the injection molding machine at the current time.

[0047] In one embodiment, when the step of determining the clamping cavity pressure according to the system pressure and the pressure difference of the clamping pipeline during high-pressure clamping of the injection molding machine is performed, the clamping force analysis module 404 is further configured to determine the clamping cavity pressure as the difference between the system pressure and the pressure difference of the clamping pipeline.

[0048] In one embodiment, when the step of determining the clamping force of the injection molding machine at the current time by performing clamping force analysis processing on the clamping cavity pressure through a preset clamping force calculation model is performed, the clamping force analysis module 404 is further configured to obtain preset calculation parameters corresponding to the injection molding machine model size and oil path difference, and determine the clamping force by inputting the calculation parameters and the clamping cavity pressure into the preset clamping force calculation model, wherein the preset clamping force calculation model is Y = AX^2 + BX + C; wherein X is the clamping cavity pressure, Y is the clamping force, and A, B, and C are all preset calculation parameters.

[0049] In one embodiment, when the step of determining the automatic adjustment amount by performing adjustment amount analysis processing on the target clamping tonnage range and the clamping force through a preset automatic adjustment model is performed, the automatic adjustment module 406 is further configured to, when it is detected that the clamping force after high-pressure clamping is outside the target clamping tonnage range, determine the clamping force adjustment amount by performing adjustment amount analysis processing on the target clamping tonnage range and the clamping force through a preset automatic adjustment model, wherein the clamping force adjustment amount represents the minimum adjustment amount required to adjust the clamping force to within the target clamping tonnage range; and determine the automatic adjustment amount corresponding to the clamping adjustment gear according to the clamping force adjustment amount and the specification information of the clamping adjustment gear.

[0050] In one embodiment, after the step of determining the automatic adjustment amount corresponding to the clamping adjustment gear is performed, the automatic adjustment module 406 is further configured to send the automatic adjustment amount to the controller of the clamping adjustment gear to perform a mold adjusting-in operation or a mold adjusting-out operation before the mold is closed, to perform fine adjustment of the clamping force, and to determine that the automatic adjustment of the clamping force of the injection molding machine is complete when a mold thickness change signal is received from the peripheral mold adjusting electric eye, wherein the mold adjusting-in operation is used to increase the clamping force, and the mold adjusting-out operation is used to decrease the clamping force.

[0051] In one embodiment, the automatic adjustment module 406 is further configured to, when the clamping force is greater than a preset pressure threshold, reduce the rotation amplitude of the clamping adjustment gear and the mold thickness change amount, and if the mold thickness change amount is less than the monitoring range of the peripheral mold adjusting electric eye, monitor the adjustment time, and determine that the automatic adjustment of the clamping force of the injection molding machine is complete when the automatic adjustment time of the clamping force is greater than a preset time threshold.

[0052] The device provided by the embodiments of the present application has the same implementation principle and technical effects as the foregoing method embodiments, and for brevity of description, the part not mentioned in the device embodiment can be referred to the corresponding content in the foregoing method embodiments.

[0053] The server provided by the embodiments of the present application includes a processor and a storage device. The storage device stores a computer program. The computer program performs the method of any of the above embodiments when executed by the processor.

[0054] Figure 5 The server 100 includes a processor 50, a memory 51, a bus 52 and a communication interface 53. The processor 50, the communication interface 53 and the memory 51 are connected through the bus 52. The processor 50 is configured to execute executable modules stored in the memory 51, such as a computer program.

[0055] The memory 51 can include a high-speed random access memory (RAM) and can also include a non-volatile memory, such as at least one disk memory. The communication between the system network element and at least one other network element is realized through at least one communication interface 53 (which can be wired or wireless). The Internet, a wide area network, a local area network, a metropolitan area network, etc. can be used.

[0056] The bus 52 can be an ISA bus, a PCI bus or an EISA bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, Figure 5 Only one bidirectional arrow is used to represent the bus, but it does not mean that there is only one bus or only one type of bus.

[0057] The memory 51 is configured to store a program. The processor 50 executes the program after receiving an execution instruction. The method performed by the device defined by the flow process of any of the above embodiments can be applied to the processor 50 or realized by the processor 50.

[0058] The processor 50 can be an integrated circuit chip with signal processing capability. In implementation, each step of the above method can be completed by integrated logic circuit of hardware in the processor 50 or by instructions in the form of software. The processor 50 described above can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. Each method, step and logic block diagram disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as a hardware code processor for execution, or a combination of hardware and software modules in the code processor for execution. The software module can be located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium in the art. The storage medium is located in the memory 51, and the processor 50 reads the information in the memory 51, and combines the hardware to complete the steps of the above method.

[0059] The computer program product of the readable storage medium provided by the embodiments of the present application includes a computer readable storage medium storing program codes, and the program codes include instructions for executing the method described in the foregoing method embodiments. For specific implementation, reference can be made to the foregoing method embodiments, which will not be described here.

[0060] If the functions are realized in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application or the parts of the present application that essentially contribute to the prior art or the parts of the technical solutions can be embodied in the form of software products. The computer software product is stored in a storage medium and includes instructions for making a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in the embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0061] Finally, it should be noted that: the above-described embodiments are only specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, but not to limit them. The protection scope of the present application is not limited to this. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily think of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed by the present application, or make equivalent replacements to some of the technical features. The modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method of automatic adjustment of clamping force of an injection molding machine, characterized in that, The method comprises: acquiring a preset mold clamping pipeline pressure difference and a target mold clamping tonnage range of an injection molding machine, and collecting system pressure of the injection molding machine during high-pressure mold clamping through a pressure sensor arranged in a hydraulic cylinder of the injection molding machine; analyzing and processing mold clamping force of the mold clamping pipeline pressure difference and the system pressure through a preset mold clamping force calculation model to determine the mold clamping force at the current time of the injection molding machine; analyzing and processing adjustment amount of the target mold clamping tonnage range and the mold clamping force through a preset automatic adjustment model to determine an automatic adjustment amount, so as to control the mold clamping adjustment gear to perform fine adjustment according to the automatic adjustment amount, and adjust the mold clamping force to the target mold clamping tonnage range; wherein the step of analyzing and processing the mold clamping force of the mold clamping pipeline pressure difference and the system pressure through the preset mold clamping force calculation model to determine the mold clamping force at the current time of the injection molding machine comprises: determining mold clamping cavity pressure according to the system pressure and the mold clamping pipeline pressure difference during high-pressure mold clamping of the injection molding machine; analyzing and processing the mold clamping cavity pressure through the preset mold clamping force calculation model to determine the mold clamping force at the current time of the injection molding machine; wherein the step of determining the mold clamping cavity pressure according to the system pressure and the mold clamping pipeline pressure difference during high-pressure mold clamping of the injection molding machine comprises: determining the mold clamping cavity pressure as a difference between the system pressure and the mold clamping pipeline pressure difference.

2. The method of automatically adjusting clamp force of an injection molding machine according to claim 1, wherein, The step of analyzing and processing the mold clamping cavity pressure through the preset mold clamping force calculation model to determine the mold clamping force at the current time of the injection molding machine comprises: acquiring preset calculation parameters corresponding to model size and oil path difference of the injection molding machine, and inputting the calculation parameters and the mold clamping cavity pressure into the preset mold clamping force calculation model to determine the mold clamping force, wherein the preset mold clamping force calculation model is: Y=AX^2+BX+C; wherein X is the mold clamping cavity pressure, Y is the mold clamping force, and A, B and C are all preset calculation parameters.

3. The method of automatically adjusting clamp force of an injection molding machine of claim 1 wherein, The step of analyzing and processing the target mold clamping tonnage range and the mold clamping force through the preset automatic adjustment model to determine the automatic adjustment amount comprises: when detecting that the mold clamping force after high-pressure mold clamping is outside the target mold clamping tonnage range, analyzing and processing the target mold clamping tonnage range and the mold clamping force through the preset automatic adjustment model to determine a mold clamping force adjustment amount, wherein the mold clamping force adjustment amount represents the minimum adjustment amount for adjusting the mold clamping force to the target mold clamping tonnage range; determining the automatic adjustment amount corresponding to the mold clamping adjustment gear according to the mold clamping force adjustment amount and specification information of the mold clamping adjustment gear.

4. The method of automatically adjusting clamp force of an injection molding machine according to claim 3, wherein, After the step of determining the automatic adjustment amount corresponding to the mold clamping adjustment gear, comprising: sending the automatic adjustment amount to a controller of the mold clamping adjustment gear to perform mold adjusting in or mold adjusting out before mold closing to fine-tune the mold clamping force, and determining that the mold clamping force automatic adjustment of the injection molding machine is completed when receiving a mold thickness change signal sent by an external mold adjusting electric eye, wherein the mold adjusting in is used to increase the mold clamping force, and the mold adjusting out is used to decrease the mold clamping force.

5. The method of automatically adjusting clamp force of an injection molding machine of claim 4 wherein, The method further comprises: When the mold clamping force is greater than the preset pressure threshold, the rotation amplitude of the mold clamping adjusting gear and the mold thickness change amount are reduced, if the mold thickness change amount is less than the monitoring range of the external mold adjusting electric eye, the adjusting time is monitored, and when the automatic adjusting time of the mold clamping force is greater than the preset time threshold, it is determined that the automatic adjustment of the mold clamping force of the injection molding machine is completed.

6. An automatic adjustment device of the clamping force of an injection molding machine, characterized in that, The device comprises: A data acquisition module acquires the preset mold clamping pipeline pressure difference and target mold clamping tonnage range of the injection molding machine, and collects the system pressure during high-pressure mold clamping of the injection molding machine through the pressure sensor arranged in the oil cylinder of the injection molding machine; A mold clamping force analysis module analyzes and processes the mold clamping force of the mold clamping pipeline pressure difference and the system pressure through a preset mold clamping force calculation model to determine the mold clamping force at the current time of the injection molding machine; An automatic adjustment module analyzes and processes the adjustment amount of the target mold clamping tonnage range and the mold clamping force through a preset automatic adjustment model to determine the automatic adjustment amount, so as to control the mold clamping adjusting gear to perform fine adjustment according to the automatic adjustment amount, and adjust the mold clamping force to the target mold clamping tonnage range; The step of analyzing and processing the mold clamping force of the mold clamping pipeline pressure difference and the system pressure through the preset mold clamping force calculation model to determine the mold clamping force at the current time of the injection molding machine comprises: determining the mold clamping cavity pressure according to the system pressure and the mold clamping pipeline pressure difference during high-pressure mold clamping of the injection molding machine; analyzing and processing the mold clamping force of the mold clamping cavity pressure through the preset mold clamping force calculation model to determine the mold clamping force at the current time of the injection molding machine; The step of determining the mold clamping cavity pressure according to the system pressure and the mold clamping pipeline pressure difference during high-pressure mold clamping of the injection molding machine comprises: determining the difference between the system pressure and the mold clamping pipeline pressure difference as the mold clamping cavity pressure.

7. A server, characterized by The computer readable storage medium stores computer executable instructions, and the computer executable instructions cause the processor to implement the method of any one of claims 1 to 5 when called and executed by the processor.

8. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer executable instructions, and the computer executable instructions cause the processor to implement the method of any one of claims 1 to 5 when called and executed by the processor.

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