Automatic adjusting method and device for mold clamping force of injection molding machine and server

Abstract

The invention provides an automatic adjusting 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, and the automatic adjusting method comprises the steps that the preset mold locking pipeline pressure difference and the target mold locking ton number range of the injection molding machine are obtained, and the system pressure of the injection molding machine during high-pressure mold locking is collected through a pressure sensor arranged in an oil cylinder of the injection molding machine; through a preset mold locking force calculation model, mold locking force analysis processing is conducted on the mold locking pipeline pressure difference and the system pressure, and the mold locking force of the injection molding machine at the current moment is determined; and adjusting quantity analysis processing is conducted on the target mold locking ton number range and the mold locking force through a preset automatic adjusting model, the automatic adjusting quantity is determined, the mold locking adjusting gear is controlled to conduct fine adjustment processing according to the automatic adjusting quantity, and the mold locking force is adjusted to be within the target mold locking ton number range. The product percent of pass and the production efficiency of the injection molding machine can be remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding machine production, and in particular to an automatic adjustment method, device and server for the clamping force of an injection molding machine. Background Art

[0002] At present, in the production process of injection molding machines, due to long-term automatic production, the clamping force is prone to slowly decrease, thus causing unqualified problems such as product flash. The relevant technology proposes that the operator can conduct manual inspections. When it is found that the product is unqualified or the machine alarm is caused by the decrease in clamping force, the machine needs to be switched from automatic mode to manual mode, and in manual mode, the machine clamping force is increased through the manual mold adjustment button, and then a few mold products are repeatedly tested to see if they are qualified. If they are unqualified, the above manual adjustment steps still need to be repeated, and the clamping force is manually increased until qualified products can be produced. Therefore, this solution consumes a lot of time and is easy to affect the production progress. In addition, since it is impossible to monitor in real time manually, when the clamping force decreases after long-term use, it is easy to affect the product qualification rate of the injection molding machine. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a method, device and server for automatically adjusting the clamping force of an injection molding machine, which can significantly improve the product qualification rate and production efficiency of the injection molding machine.

[0004] In the first aspect, an embodiment of the present invention provides a method for automatically adjusting the clamping force of an injection molding machine, the method comprising: obtaining a preset clamping pipeline pressure difference and a target clamping tonnage range of the injection molding machine, and collecting 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; performing a clamping force analysis on the clamping pipeline 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 moment; performing an adjustment amount analysis on the target clamping tonnage range and the clamping force through a preset automatic adjustment model to determine the automatic adjustment amount, so as to control the clamping adjustment gear to perform fine-tuning according to the automatic adjustment amount, and adjust the clamping force to within the target clamping tonnage range.

[0005] In one embodiment, a clamping force calculation model is preset to analyze and process the clamping line pressure difference and the system pressure to determine the clamping force of the injection molding machine at the current moment, including: determining the clamping cavity pressure according to the system pressure and the clamping line pressure difference during high-pressure clamping of the injection molding machine; and a clamping force calculation model is preset to analyze and process the clamping cavity pressure to determine the clamping force of the injection molding machine at the current moment.

[0006] In one embodiment, the step of determining the clamping cavity pressure according to the system pressure and the clamping pipeline pressure difference during high-pressure clamping of the injection molding machine includes: determining the difference between the system pressure and the clamping pipeline pressure difference as the clamping cavity pressure.

[0007] In one embodiment, a clamping force analysis is performed 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 moment, including: obtaining preset calculation parameters corresponding to the injection molding machine model size and oil circuit differences, 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 preset calculation parameters.

[0008] In one embodiment, a target clamping tonnage range and clamping force are analyzed and processed by a preset automatic adjustment model to determine the automatic adjustment amount, including: when it is detected that the clamping force after high-pressure clamping is outside the target clamping tonnage range, the target clamping tonnage range and clamping force are analyzed and processed by a preset automatic adjustment model to determine the clamping force adjustment amount, wherein the clamping force adjustment amount represents: adjusting the clamping force to the minimum adjustment amount 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 one embodiment, after the step of determining the automatic adjustment amount corresponding to the locking adjustment gear, the method includes: sending the automatic adjustment amount to the controller of the locking adjustment gear to perform a mold adjustment forward operation or a mold adjustment backward operation before closing the mold, fine-tuning the locking force, and when receiving a mold thickness change signal sent by an external mold adjustment electric eye, determining that the automatic adjustment of the locking force of the injection molding machine is completed, wherein the mold adjustment forward operation is used to increase the locking force, and the mold adjustment backward operation is used to reduce the locking force.

[0010] In one embodiment, the method also includes: when the clamping force is greater than a preset pressure threshold, the rotation amplitude of the clamping adjustment gear and the change in mold thickness are reduced; if the change in mold thickness is less than the monitoring range of the external mold adjustment electric eye, the adjustment time is monitored; 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 the second aspect, an embodiment of the present invention further provides an automatic adjustment device for the clamping force of an injection molding machine, the device comprising: a data acquisition module, for acquiring a preset clamping pipeline pressure difference and a target clamping tonnage range of the injection molding machine, and collecting 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; a clamping force analysis module, for performing a clamping force analysis on the clamping pipeline pressure difference and the system pressure through a preset clamping force calculation model, and determining the clamping force of the injection molding machine at the current moment; an automatic adjustment module, for performing an adjustment amount analysis on the target clamping tonnage range and the clamping force through a preset automatic adjustment model, and determining the automatic adjustment amount, so as to control the clamping adjustment gear to perform fine-tuning according to the automatic adjustment amount, and adjust the clamping force to within the target clamping tonnage range.

[0012] In a third aspect, an embodiment of the present invention further provides a server, comprising a processor and a memory, wherein the memory stores computer executable instructions that can be executed by the processor, and the processor executes the computer executable instructions to implement any one of the methods provided in the first aspect.

[0013] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, which stores computer-executable instructions. When the computer-executable instructions are called and executed by a processor, the computer-executable instructions prompt the processor to implement any one of the methods provided in the first aspect.

[0014] The embodiments of the present invention bring the following beneficial effects:

[0015] An embodiment of the present invention provides an automatic adjustment method, device and server for the clamping force of an injection molding machine. After obtaining the preset clamping pipeline pressure difference and target clamping tonnage range of the injection molding machine, and collecting the system pressure during high-pressure clamping of the injection molding machine through a pressure sensor arranged in the injection molding machine cylinder, the method uses a preset clamping force calculation model to analyze and process the clamping pipeline pressure difference and the system pressure to determine the clamping force of the injection molding machine at the current moment, and uses a preset automatic adjustment model to analyze and process the target clamping tonnage range and the clamping force to determine the automatic adjustment amount, so as to control the clamping adjustment gear to perform fine-tuning processing according to the automatic adjustment amount, and adjust the clamping force to within the target clamping tonnage range. The embodiment of the present invention can obtain the clamping force through algorithmic 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.

[0016] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic flow chart of a method for automatically adjusting the clamping force of an injection molding machine provided by an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of a specific process of an automatic adjustment method of the clamping force of an injection molding machine provided by an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of a process for automatically adjusting the clamping force before closing the mold provided by an embodiment of the present invention;

[0022] Figure 4 A schematic structural diagram of an automatic adjustment device for the clamping force of an injection molding machine provided by an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of the structure of a server provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described in combination with the embodiments below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] At present, in the production process of customers, the situation of unqualified products occasionally occurs due to the reduction of automatic production clamping force. The existing technology requires the operator to spend a certain amount of time to troubleshoot and solve the problem before continuing production. Specifically, in the production process of the injection molding machine, due to long-term automatic production, it is easy to cause the clamping force to slowly decrease, thereby causing unqualified problems such as product flash. The relevant technology proposes that the operator can perform manual troubleshooting. When it is found that the product is unqualified or the machine alarm is caused by the reduction of clamping force, it is necessary to switch the machine from automatic mode to manual mode, and in manual mode, adjust the machine clamping force through the manual mold adjustment button. Large, repeat the test of a few molded products to see if they are qualified. If they are unqualified, it is still necessary to repeat the above manual adjustment steps and manually increase the clamping force until qualified products can be produced. Therefore, this solution is time-consuming and easy to affect the production progress, and because it is impossible to monitor in real time manually, when the clamping force becomes smaller after a long time of use, it is easy to affect the product qualification rate of the injection molding machine. Based on this, the automatic adjustment method, device and server of the clamping force of the injection molding machine provided by the implementation of the present invention can greatly reduce the abnormal situations occurring in the production process of the injection molding machine, improve production efficiency, and save the working hours for troubleshooting and solving abnormal situations.

[0026] See also Figure 1 The flowchart of a method for automatically adjusting the clamping force of an injection molding machine is shown in FIG. 1 , and the method mainly includes the following steps S102 to S106:

[0027] Step S102, obtaining the preset clamping pipeline pressure difference and target clamping tonnage range of the injection molding machine, and collecting the system pressure of the injection molding machine during high-pressure clamping through the pressure sensor set in the injection molding machine cylinder.

[0028] Step S104, through the preset clamping force calculation model, the clamping force analysis and processing are performed on the clamping pipeline pressure difference and the system pressure to determine the clamping force of the injection molding machine at the current moment, wherein the clamping force refers to the locking force applied to the mold after the injection molding machine closes the mold. During injection, in order to overcome the expansion force of the melt in the cavity on the mold, when the raw material is injected into the mold cavity at high pressure, a mold-supporting force will be generated. Therefore, the clamping unit of the injection molding machine must provide sufficient "clamping force" to prevent the mold from being expanded.

[0029] Step S106, by presetting the automatic adjustment model, the target clamping tonnage range and the clamping force are analyzed and processed by the adjustment amount, 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 adjust the clamping force to the target clamping tonnage range. In one embodiment, the clamping force is used as the 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 is closed, and then the clamping force during high-pressure clamping is continuously monitored. If it still exceeds the target clamping tonnage deviation range, the clamping force adjustment is continued before the next mold is closed until the clamping force after monitoring the high-pressure clamping returns to the normal range. The whole process is completed in the automatic mode and does not affect the normal production of products. Generally, from monitoring that the clamping force exceeds the target deviation range, only a few automatic adjustment corrections are needed to return to the normal range, and the automatic adjustment efficiency is relatively high.

[0030] The automatic adjustment method of the clamping force of the injection molding machine provided in the embodiment of the present invention can obtain the clamping force through algorithmic 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] See also Figure 2 The specific flow chart of a method for automatically adjusting the clamping force of an injection molding machine is shown in the figure. The embodiment of the present invention also provides an implementation method for automatically adjusting the clamping force of an injection molding machine. For details, see (1) to (2) below:

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

[0033] (A) The clamping cavity pressure is determined based on the system pressure and the clamping pipeline pressure difference during high-pressure clamping of the injection molding machine. In one embodiment, the difference between the system pressure and the clamping pipeline pressure difference can be determined as the clamping cavity pressure, that is, the clamping cavity pressure (X) = the pressure measured by the system pressure sensor - the clamping pipeline pressure difference.

[0034] (B) Through a preset clamping force calculation model, the clamping force analysis processing is performed on the clamping cavity pressure to determine the clamping force of the injection molding machine at the current moment. In one embodiment, preset calculation parameters corresponding to the injection molding machine model size and oil circuit difference 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, wherein the preset clamping force calculation model is:

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

[0036] Among them, X is the clamping cavity pressure, Y is the clamping force, A, B and C are all preset calculation parameters. The clamping pipeline pressure difference and ABC coefficient vary according to the size of different models and the difference in oil circuits. During the machine assembly and test run, the corresponding parameters are calibrated according to the actual clamping force and system pressure of the machine. Therefore, in the actual production of the machine, it is only necessary to collect the data of the system pressure sensor to calculate the actual clamping force of the machine.

[0037] (2) Determine whether the clamping force is within the target clamping tonnage range. If so, close the mold and proceed with injection molding. If not, adjust the clamping force before closing the mold. Figure 3 The flowchart of automatic clamping force adjustment before mold closing is shown in FIG. 1 . When the clamping force after high-pressure clamping is detected to exceed the target deviation range, a mold adjustment action is inserted before the next mold is closed to fine-tune the clamping force, and then the mold is closed and the product is produced. The clamping force is automatically adjusted until the clamping force after high-pressure clamping returns to the normal range. At the same time, an alarm will be given if the clamping force deviation is too large. Specifically, the following (C) to (D) are included:

[0038] (C) When it is detected that the clamping force after high-pressure clamping is outside the target clamping tonnage range, the target clamping tonnage range and the clamping force are analyzed and processed by a preset automatic adjustment model to determine the clamping force adjustment amount, and the automatic adjustment amount corresponding to the clamping adjustment gear is determined according to the clamping force adjustment amount and the specification information of the clamping adjustment gear, wherein the clamping force adjustment amount indicates: adjusting the clamping force to the minimum adjustment amount within the target clamping tonnage range.

[0039] (D) The automatic adjustment amount is sent to the controller of the mold locking adjustment gear to perform a mold adjustment forward operation or a mold adjustment backward operation before closing the mold, to fine-tune the mold locking force, and when a mold thickness change signal sent by an external mold adjustment electric eye is received, it is determined that the automatic adjustment of the mold locking force of the injection molding machine is completed, wherein the mold adjustment forward operation is used to increase the mold locking force, and the mold adjustment backward operation is used to reduce the mold locking force. In one embodiment, when the mold locking force is greater than a preset pressure threshold, the rotation amplitude of the mold locking 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. When the automatic adjustment time of the mold locking force is greater than the preset time threshold, it is determined that the automatic adjustment of the mold locking force of the injection molding machine is completed.

[0040] To summarize, the present invention only needs to use an algorithm to convert the system pressure into locking force, and perform analysis and processing, so that it can automatically monitor and identify the abnormal situation that the locking force exceeds the target deviation range, and adjust and correct it by itself. The system pressure sensor is standard for the injection molding machine, so there is no need to install an additional locking force sensor, which saves hardware costs. Relatively accurate locking force data can be obtained by performing algorithm analysis using the existing system pressure sensor data. The entire process does not require human participation. Compared with manual discovery, investigation and problem solving, it is more efficient and can significantly improve the product qualification rate and production efficiency of the injection molding machine.

[0041] Regarding the automatic adjustment method of the clamping force of the injection molding machine provided in the above embodiment, the embodiment of the present invention provides an automatic adjustment device of the clamping force of the injection molding machine, see Figure 4 The schematic diagram of the structure of an automatic adjustment device for the clamping force of an injection molding machine is shown, and the device includes the following parts:

[0042] The data acquisition module 402 acquires the preset clamping pipeline pressure difference and the target clamping tonnage range of the injection molding machine, and collects the system pressure of the injection molding machine during high-pressure clamping through the pressure sensor set in the oil cylinder of the injection molding machine;

[0043] The clamping force analysis module 404 performs clamping force analysis on the clamping pipeline 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 moment;

[0044] The automatic adjustment module 406 performs adjustment amount analysis on the target clamping tonnage range and the clamping force through a preset automatic adjustment model, determines the automatic adjustment amount, and controls the clamping adjustment gear to perform fine adjustment according to the automatic adjustment amount, so as to adjust the clamping force to within the target clamping tonnage range.

[0045] The automatic adjustment device for the clamping force of the injection molding machine provided in the embodiment of the present application can obtain the clamping force through algorithmic 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.

[0046] In one embodiment, when performing a locking force analysis on the locking pipeline pressure difference and the system pressure through a preset locking force calculation model to determine the locking force of the injection molding machine at the current moment, the above-mentioned locking force analysis module 404 is also used to: determine the locking cavity pressure according to the system pressure and the locking pipeline pressure difference during high-pressure locking of the injection molding machine; perform a locking force analysis on the locking cavity pressure through a preset locking force calculation model to determine the locking force of the injection molding machine at the current moment.

[0047] In one embodiment, when performing the step of determining the clamping cavity pressure based on the system pressure and the clamping pipeline pressure difference during high-pressure clamping of the injection molding machine, the clamping force analysis module 404 is also used to: determine the difference between the system pressure and the clamping pipeline pressure difference as the clamping cavity pressure.

[0048] In one embodiment, when performing a locking force analysis on the locking cavity pressure through a preset locking force calculation model to determine the locking force of the injection molding machine at the current moment, the locking force analysis module 404 is also used to: obtain preset calculation parameters corresponding to the injection molding machine model size and oil circuit differences, and bring the calculation parameters and the locking cavity pressure into the preset locking force calculation model to determine the locking force, wherein the preset locking force calculation model is: Y=AX^2+BX+C; wherein X is the locking cavity pressure, Y is the locking force, and A, B and C are all preset calculation parameters.

[0049] In one embodiment, when performing the step of analyzing and processing the target clamping tonnage range and the clamping force by using a preset automatic adjustment model to determine the automatic adjustment amount, the automatic adjustment module 406 is also used for: when it is detected that the clamping force after high-pressure clamping is outside the target clamping tonnage range, analyzing and processing the target clamping tonnage range and the clamping force by using a preset automatic adjustment model to determine the clamping force adjustment amount, wherein the clamping force adjustment amount represents: adjusting the clamping force to the minimum adjustment amount 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.

[0050] In one embodiment, after the step of determining the automatic adjustment amount corresponding to the locking adjustment gear, the automatic adjustment module 406 is also used to: send the automatic adjustment amount to the controller of the locking adjustment gear to perform a mold adjustment forward operation or a mold adjustment backward operation before closing the mold, fine-tune the locking force, and when receiving the mold thickness change signal sent by the external mold adjustment electric eye, determine that the automatic adjustment of the locking force of the injection molding machine is completed, wherein the mold adjustment forward operation is used to increase the locking force, and the mold adjustment backward operation is used to reduce the locking force.

[0051] In one embodiment, the automatic adjustment module 406 is also used for: when the clamping force is greater than a preset pressure threshold, the rotation amplitude of the clamping adjustment gear and the change in mold thickness are reduced; if the change in mold thickness is less than the monitoring range of the external mold adjustment electric eye, the adjustment time is monitored; 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.

[0052] The device provided in the embodiment of the present invention has the same implementation principle and technical effects as those of the aforementioned method embodiment. For the sake of brief description, for matters not mentioned in the device embodiment, reference may be made to the corresponding contents in the aforementioned method embodiment.

[0053] An embodiment of the present invention provides a server. Specifically, the server includes a processor and a storage device. The storage device stores a computer program, and when the computer program is executed by the processor, it executes the method described in any one of the above-mentioned embodiments.

[0054] Figure 5 A structural diagram of a server provided in an embodiment of the present invention, the server 100 includes: a processor 50, a memory 51, a bus 52 and a communication interface 53, wherein the processor 50, the communication interface 53 and the memory 51 are connected via the bus 52; the processor 50 is used to execute an executable module stored in the memory 51, such as a computer program.

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

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

[0057] Among them, the memory 51 is used to store programs, and the processor 50 executes the program after receiving the execution instruction. The method executed by the device for flow process definition disclosed in any embodiment of the above-mentioned embodiment of the present invention can be applied to the processor 50 or implemented by the processor 50.

[0058] The processor 50 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the processor 50. The above processor 50 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present invention 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 the embodiments of the present invention can be directly embodied as a hardware decoding processor to be executed, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as 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 is located in the memory 51, and the processor 50 reads the information in the memory 51 and completes the steps of the above method in combination with its hardware.

[0059] The computer program product of the readable storage medium provided in the embodiment of the present invention includes a computer-readable storage medium storing program code, and the instructions included in the program code can be used to execute the methods described in the previous method embodiments. The specific implementation can be referred to the previous method embodiments, which will not be repeated here.

[0060] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program codes.

[0061] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for automatically adjusting the clamping force of an injection molding machine, characterized in that: The method comprises: Obtain the preset clamping pipeline pressure difference and target clamping tonnage range of the injection molding machine, and collect the system pressure of the injection molding machine during high-pressure clamping through the pressure sensor set in the injection molding machine cylinder; By presetting a clamping force calculation model, the clamping force analysis process is performed on the clamping pipeline pressure difference and the system pressure to determine the clamping force of the injection molding machine at the current moment; By presetting the automatic adjustment model, the target clamping tonnage range and the clamping force are analyzed and processed to determine the automatic adjustment amount, so as to control the clamping adjustment gear to perform fine adjustment according to the automatic adjustment amount and adjust the clamping force to the target clamping tonnage range.

2. The method for automatically adjusting the clamping force of an injection molding machine according to claim 1, characterized in that: The step of performing a clamping force analysis on the clamping line pressure difference and the system pressure by presetting a clamping force calculation model to determine the clamping force of the injection molding machine at the current moment comprises: Determine the clamping cavity pressure according to the system pressure and the clamping pipeline pressure difference during high-pressure clamping of the injection molding machine; By presetting a clamping force calculation model, the clamping force analysis process is performed on the clamping cavity pressure to determine the clamping force of the injection molding machine at the current moment.

3. The method for automatically adjusting the clamping force of an injection molding machine according to claim 2, characterized in that: The step of determining the clamping cavity pressure according to the system pressure and the clamping pipeline pressure difference during high-pressure clamping of the injection molding machine comprises: The difference between the system pressure and the clamping line pressure difference is determined as the clamping cavity pressure.

4. The method for automatically adjusting the clamping force of an injection molding machine according to claim 2, characterized in that: The step of performing a clamping force analysis process on the clamping cavity pressure by presetting a clamping force calculation model to determine the clamping force of the injection molding machine at the current moment comprises: The preset calculation parameters corresponding to the injection molding machine model size and oil circuit difference are obtained, and the calculation parameters and the clamping cavity pressure are brought 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 preset calculation parameters.

5. The method for automatically adjusting the clamping force of an injection molding machine according to claim 1, characterized in that: The step of performing adjustment amount analysis processing on the target clamping tonnage range and the clamping force by presetting the automatic adjustment model to determine the automatic adjustment amount comprises: When it is detected that the clamping force after high-pressure clamping is outside the target clamping tonnage range, the target clamping tonnage range and the clamping force are subjected to adjustment amount analysis processing through a preset automatic adjustment model to determine the clamping force adjustment amount, wherein the clamping force adjustment amount represents: adjusting the clamping force to the minimum adjustment amount within the target clamping tonnage range; The automatic adjustment amount corresponding to the mold locking adjustment gear is determined according to the mold locking force adjustment amount and the specification information of the mold locking adjustment gear.

6. The method for automatically adjusting the clamping force of an injection molding machine according to claim 5, characterized in that: After the step of determining the automatic adjustment amount corresponding to the mold locking adjustment gear, the method further comprises: The automatic adjustment amount is sent to the controller of the mold locking adjustment gear to perform a mold adjustment forward operation or a mold adjustment backward operation before closing the mold, to fine-tune the mold locking force, and when a mold thickness change signal sent by an external mold adjustment electric eye is received, it is determined that the automatic adjustment of the mold locking force of the injection molding machine is completed, wherein the mold adjustment forward operation is used to increase the mold locking force, and the mold adjustment backward operation is used to reduce the mold locking force.

7. The method for automatically adjusting the clamping force of an injection molding machine according to claim 6, characterized in that: 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 change in mold thickness are reduced. If the change in mold thickness is less than the monitoring range of the external mold adjustment electric eye, the adjustment time is monitored. 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.

8. An automatic adjustment device for the clamping force of an injection molding machine, characterized in that: The device comprises: The data acquisition module obtains the preset clamping pipeline pressure difference and target clamping tonnage range of the injection molding machine, and collects the system pressure of the injection molding machine during high-pressure clamping through the pressure sensor set in the injection molding machine cylinder; A clamping force analysis module, which performs clamping force analysis on the clamping line pressure difference and the system pressure by using a preset clamping force calculation model to determine the clamping force of the injection molding machine at the current moment; The automatic adjustment module performs adjustment amount analysis processing on the target clamping tonnage range and the clamping force through a preset automatic adjustment model, determines the automatic adjustment amount, and controls the clamping adjustment gear to perform fine adjustment processing according to the automatic adjustment amount, so as to adjust the clamping force to within the target clamping tonnage range.

9. A server, characterized in that: The method comprises a processor and a memory, wherein the memory stores computer executable instructions that can be executed by the processor, and the processor executes the computer executable instructions to implement the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are called and executed by a processor, the computer-executable instructions prompt the processor to implement the method according to any one of claims 1 to 7.

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