An automatic lubrication control system and method for an injection molding machine

By designing the automatic lubrication control system of the injection molding machine, using the control terminal to generate an automatic lubrication control strategy, and selecting an appropriate lubrication system for lubrication processing, the problems of poor adaptability and inconvenient operation in the prior art are solved, and efficient and economical lubrication control is achieved.

CN116141615BActive Publication Date: 2025-06-13SHENZHEN HUACHENG IND CONTROL
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Patent Information

Application Number
CN202211618976.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-12-12
Publication Date
2025-06-13
Estimated Expiration
2042-12-12

AI Technical Summary

Technical Problem

The existing injection molding machine lubrication control system has poor adaptability and cannot effectively adapt to the control needs of different distributors. The lubrication pump controller is inconvenient to operate, which increases costs.

Method used

An automatic lubrication control system for injection molding machines is designed, including a control terminal and multiple lubrication systems. Each lubrication system consists of a lubrication pump, a lubrication pipe and a distributor. The control terminal generates an automatic lubrication control strategy based on the received control instructions, selects an appropriate lubrication pump and pipe, and performs lubrication processing through the distributor.

Benefits of technology

It improves the adaptability of injection molding machine computers to lubrication systems, enhances the efficiency of automatic lubrication, reduces costs, and simplifies operations.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to an automatic lubrication control system and method for an injection molding machine. The system includes: a control terminal and a plurality of lubrication systems. Each lubrication system includes a lubrication pump, a lubrication pipeline, and a distributor. The control terminal is configured to receive control instructions and generate an automatic lubrication control strategy according to the control instructions. The plurality of lubrication systems are configured to select corresponding lubrication pumps and lubrication pipelines according to the automatic lubrication control strategy and distribute them to different parts of the injection molding machine through the distributor for lubrication treatment. By controlling different lubrication systems separately through the control terminal and lubricating different components in the injection molding machine according to different lubrication strategies, the present invention can improve the adaptability of the injection molding machine computer to the lubrication system and improve the efficiency of automatic lubrication.
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Description

Technical Field

[0001] The present invention relates to the technical field of injection molding machine lubrication control, and particularly to an automatic lubrication control system and method for an injection molding machine. Background Art

[0002] An injection molding machine, also known as an injection molding press or an injection machine, is the main molding equipment for manufacturing various shaped plastic products by using thermoplastic or thermosetting plastics with a plastic molding die. An injection molding machine generally has a lubrication system, which is a circuit that provides lubrication for the relatively moving parts on the injection molding machine, so as to reduce energy consumption, reduce noise and increase the service life of parts.

[0003] The centralized lubrication system of an injection molding machine is divided into a lubricating oil system and a grease system according to the lubricant used, and generally consists of a lubricating pump, a distributor, an oil pipeline and other auxiliary components. Since there are many lubrication points on an injection molding machine, the amount of lubricant required at each point is also different, and the pipeline pressure loss caused by the different distances between each lubrication point and the lubricating pump is also different. A flow distributor must be set between the lubricating pump and the lubrication points. The common types of distributors are impedance type, volumetric type and progressive type; different distributors have different control methods. For impedance type and progressive type distributors, as long as a certain pressure is maintained, the distributor will work continuously; while for volumetric type distributors, it is necessary to continuously boost and release pressure to achieve oil injection.

[0004] The current lubrication control is basically taken over by the injection molding machine computer for control. However, the lubrication control provided by these injection molding machine computers has poor adaptability. Most of them provide a set of lubrication control, and there is no implementation of different lubrication control methods for different distributors. Although the lubricating pump that cannot be controlled can be replaced with a lubricating pump with a controller, the price is relatively high, which will increase the cost, and the controller of this kind of lubricating pump is not convenient to operate when installed on the lubricating pump.

[0005] To solve the above deficiencies, the purpose of the present invention is to provide an expandable and configurable automatic lubrication system control and method for an injection molding machine, so as to improve the adaptability of the injection molding machine computer to the lubrication system. Summary of the Invention

[0006] In view of this, it is necessary to provide an automatic lubrication control system and method for an injection molding machine, which solves the drawbacks that the existing technology can only provide a set of lubrication control or the controller of the lubricating pump is not convenient to operate, and can realize the expandability and configurability of the automatic lubrication system control of the injection molding machine, so as to improve the adaptability of the injection molding machine computer to the lubrication system.

[0007] To achieve the above purpose, the present invention provides an automatic lubrication control system for an injection molding machine, including:

[0008] A control terminal and a plurality of lubrication systems, each of the lubrication systems includes a lubricating pump, a lubrication pipeline and a distributor;

[0009] The control terminal is used to receive control instructions and generate an automatic lubrication control strategy according to the control instructions;

[0010] The several lubrication systems are used to select corresponding lubrication pumps and lubrication pipelines according to the automatic lubrication control strategy, and distribute them to different parts of the injection molding machine through distributors for lubrication treatment.

[0011] Further, the several lubrication systems include an oil lubrication system and a grease lubrication system; the oil lubrication system includes an oil lubrication pump, a plurality of oil lubrication pipelines and a plurality of oil distributors, and the grease lubrication system includes a grease lubrication pump, a plurality of grease lubrication pipelines and a plurality of grease distributors.

[0012] Further, the control terminal includes a controller and an interaction panel; the interaction panel is used to receive instructions input by the user to generate the control instructions, and the controller is used to generate an automatic lubrication control strategy according to the control instructions.

[0013] To achieve the above purpose in real time, the present invention also provides an automatic lubrication control method for an injection molding machine, which is applied to the above-mentioned automatic lubrication control system of the injection molding machine. The method includes:

[0014] Receiving control instructions based on the control terminal and generating an automatic lubrication control strategy according to the control instructions;

[0015] Selecting corresponding lubrication pumps and lubrication pipelines in the several lubrication systems according to the automatic lubrication control strategy, and distributing them to different parts of the injection molding machine through distributors for lubrication treatment.

[0016] Further, generating the automatic lubrication control strategy according to the control instructions includes:

[0017] Presetting the number of lubrication pumps of the current injection molding machine according to the control instructions, generating a lubrication system control task corresponding to the lubrication pump, and generating the automatic lubrication control strategy according to the lubrication system control task corresponding to the lubrication pump;

[0018] Among them, the automatic lubrication control strategy includes at least one of a lubrication system control point setting scheme, a lubrication system detection point setting scheme, a start-up automatic lubrication setting scheme, a lubrication pump working mode setting scheme, an automatic lubrication interval modulus setting scheme, a blockage detection setting scheme, an oil leakage detection setting scheme, and a low oil level detection setting scheme.

[0019] Further, the start-up automatic lubrication setting scheme includes:

[0020] When the injection molding machine is started up, it is judged whether this start-up is the first start-up of the day;

[0021] If so, determine whether there is a lubrication system group with "start-up lubrication" enabled. If there is, execute the lubrication process of the lubrication system group that has enabled "start-up lubrication" according to the preset configuration, and record the current date. If not, skip the process of start-up lubrication treatment;

[0022] If not, skip the process of start-up lubrication treatment.

[0023] Furthermore, the working mode setting scheme of the lubrication pump includes:

[0024] Preset the working mode of the lubrication pump. The working mode of the lubrication pump includes an intermittent working mode or a continuous working mode;

[0025] The intermittent working mode includes: a. Turn on the lubrication pump to increase the pressure in the lubrication pipeline and inject the lubricant into the distributor; b. Calculate the duration of the lubrication pump being turned on; c. When the duration of the lubrication pump being turned on reaches the preset duration, the distributor completes the oil storage work; d. Turn off the lubrication pump, and the lubrication pump starts to relieve pressure, causing the pressure in the lubrication pipeline to drop and the spring of the distributor to reset; e. Calculate the duration of the lubrication pump being in the off state; f. After the time after the lubrication pump is turned off reaches the preset intermittent time, increment the lubrication count by 1, and determine whether the lubrication count has reached the preset count. If it has, end the lubrication and complete the current lubrication operation; if not, return to step a and continue to handle the turning on and off of the lubrication pump;

[0026] The continuous working mode includes: Preset a working time. After lubrication starts, turn on the lubrication pump. When the continuous working time of the lubrication pump reaches the preset working time, stop the lubrication pump and complete the current lubrication operation.

[0027] Furthermore, the production process of the injection molding machine executes one cycle as one mold; the automatic lubrication interval mold number setting scheme includes:

[0028] After the injection molding machine enters the semi-automatic or automatic mode, increment the mold number by 1 for each mold produced, and determine whether the number of molds the injection molding machine has worked has reached the preset interval mold number. If it has, perform the automatic lubrication operation;

[0029] Among them, after reaching the preset interval mold number, clear the recorded mold number of the work and start counting again.

[0030] Furthermore, the blockage detection setting scheme includes:

[0031] Start timing each time after the lubrication pump is turned on, and detect the pressure signal in real time. When the pressure signal is detected within the preset blockage determination time, it is determined as a blockage fault.

[0032] Further, the oil leakage detection setting solution includes: starting timing after the lubrication pump is turned on, and detecting the pressure signal in real time. If the pressure signal has not been detected after the time when the lubrication pump is turned on reaches the preset oil leakage determination time, it is determined that there is an oil leakage.

[0033] The low oil level detection setting solution includes: continuously detecting the low oil level signal after the injection molding machine is started. If the low oil level signal is detected, a prompt message for low oil level is popped up.

[0034] The beneficial effects of the present invention: The system of the present invention includes a control terminal and several lubrication systems. Each lubrication system includes a lubrication pump, a lubrication pipeline, and a distributor; the control terminal is used to receive control instructions and generate an automatic lubrication control strategy according to the control instructions; several lubrication systems are used to select the corresponding lubrication pump and lubrication pipeline according to the automatic lubrication control strategy, and distribute them to different parts of the injection molding machine through the distributor for lubrication treatment. The present invention controls different lubrication systems separately through the control terminal, and lubricates different components in the injection molding machine according to different lubrication strategies, which can improve the adaptability of the injection molding machine computer to the lubrication system and improve the efficiency of automatic lubrication. Description of the Drawings

[0035] Figure 1 It is a schematic structural diagram of an embodiment of the automatic lubrication control system for an injection molding machine provided by the present invention;

[0036] Figure 2 It is a schematic flow diagram of an embodiment of the automatic lubrication control method for an injection molding machine provided by the present invention;

[0037] Figure 3 It is a schematic flow diagram of an embodiment of the automatic lubrication setting solution at startup provided by the present invention;

[0038] Figure 4 It is a schematic flow diagram of an embodiment of the lubrication pump working mode setting solution provided by the present invention;

[0039] Figure 5 It is a schematic flow diagram of an embodiment of the automatic lubrication interval modulus setting solution provided by the present invention;

[0040] Figure 6 It is a schematic flow diagram of an embodiment of the blockage detection setting solution provided by the present invention;

[0041] Figure 7 It is a schematic flow diagram of an embodiment of the oil leakage detection setting solution provided by the present invention;

[0042] Figure 8 It is a schematic flow diagram of an embodiment of the low oil level detection setting solution provided by the present invention. Detailed Embodiments

[0043] The preferred embodiments of the present invention will be specifically described below with reference to the accompanying drawings. The accompanying drawings form a part of this application and are used together with the embodiments of the present invention to explain the principles of the present invention, rather than to limit the scope of the present invention.

[0044] In order to solve the drawbacks that the prior art can only provide a set of lubrication control or the controller of the lubrication pump is inconvenient to operate, and to achieve the expandability and configurability of the automatic lubrication system control of the injection molding machine, thereby improving the adaptability of the injection molding machine computer to the lubrication system, the embodiments of the present invention provide an automatic lubrication control system and method for an injection molding machine, as specifically described below.

[0045] As Figure 1 shown, the embodiments of the present invention provide an automatic lubrication control system for an injection molding machine, including:

[0046] A control terminal 100 and a plurality of lubrication systems, each of the lubrication systems includes a lubrication pump, a lubrication pipeline, and a distributor;

[0047] The control terminal 100 is configured to receive a control instruction and generate an automatic lubrication control strategy according to the control instruction;

[0048] The plurality of lubrication systems are configured to select corresponding lubrication pumps and lubrication pipelines according to the automatic lubrication control strategy, and distribute them to different parts of the injection molding machine through the distributor for lubrication treatment.

[0049] Specifically, the plurality of lubrication systems include an oil lubrication system 200 and a grease lubrication system 300; the oil lubrication system 200 includes an oil lubrication pump 201, a plurality of oil lubrication pipelines 202, and a plurality of oil distributors 203, and the grease lubrication system 300 includes a grease lubrication pump 301, a plurality of grease lubrication pipelines 302, and a plurality of grease distributors 303.

[0050] Further, the control terminal 100 includes a controller 101 and an interaction panel 102; the interaction panel 102 is configured to receive an instruction input by a user to generate the control instruction, and the controller 101 is configured to generate an automatic lubrication control strategy according to the control instruction.

[0051] It should be noted that the control terminal 100 can be an injection molding machine computer. The interaction panel 102 is mainly used for human-computer interaction with the user, such as parameter setting or feedback display, and the controller 101 is mainly used to implement the execution of logical control and control a plurality of lubrication systems through logical control.

[0052] It is understandable that in this embodiment, the thin oil lubrication system 200 and the grease lubrication system 300 are taken as two groups of lubrication systems for illustration. The thin oil lubrication system 200 and the grease lubrication system 300 are used to lubricate different parts of the injection molding machine. However, the controllable lubrication systems are not limited to the above-mentioned thin oil lubrication system 200 and grease lubrication system 300, that is, there can be more than two groups, such as three groups or even more than three groups.

[0053] To achieve the above purpose in real time, an embodiment of the present invention also provides an automatic lubrication control method for an injection molding machine, which is applied to the above-mentioned automatic lubrication control system of the injection molding machine. Please refer to Figure 2 , the method includes:

[0054] Step S201, receive a control instruction based on the control terminal, and generate an automatic lubrication control strategy according to the control instruction;

[0055] Step S202, according to the automatic lubrication control strategy, select corresponding lubricating pumps and lubricating pipelines in the several lubrication systems, and distribute them to different parts of the injection molding machine through a distributor for lubrication treatment.

[0056] In a specific embodiment, the generating the automatic lubrication control strategy according to the control instruction includes:

[0057] Preset the number of lubricating pumps of the current injection molding machine according to the control instruction, generate a lubrication system control task corresponding to the lubricating pump, and generate the automatic lubrication control strategy according to the lubrication system control task corresponding to the lubricating pump;

[0058] Among them, the automatic lubrication control strategy includes at least one of a lubrication system control point setting scheme, a lubrication system detection point setting scheme, a start-up automatic lubrication setting scheme, a lubricating pump working mode setting scheme, an automatic lubrication interval modulus setting scheme, a blockage detection setting scheme, an oil leakage detection setting scheme, and a low oil level detection setting scheme.

[0059] It should be noted that the injection molding machine system contains many input points and output points, and only a few of them are used by the lubrication system. It is necessary to configure the input points and output points actually used by each group of lubrication before lubrication. Among them, the control point setting is to set the output point for controlling the start and stop of the lubricating pump, and this point must be set, otherwise the start and stop of the lubricating pump cannot be controlled. The detection point setting is to set the input point for pressure detection (used for judging blockage and oil leakage) and the input point for low oil level detection (used for judging low oil level). The detection point is optional. If not set, the corresponding detection function cannot be correctly executed.

[0060] In some embodiments of the present invention, the start-up automatic lubrication setting scheme includes:

[0061] When the injection molding machine is started up, it is judged whether this startup is the first startup of the day;

[0062] If it is, then it is judged whether there is a lubrication system group with "startup lubrication" turned on. If there is, the lubrication system group with "startup lubrication" turned on shall execute the lubrication process of the lubrication system group according to the preset configuration, and record the current date. If not, the process of startup lubrication treatment shall be skipped;

[0063] If not, the process of startup lubrication treatment shall be skipped.

[0064] For a specific embodiment, please refer to Figure 3 , Figure 3 which is a schematic flow diagram of an embodiment of the startup automatic lubrication setting provided by the present invention, and specifically includes:

[0065] The injection molding machine is started up;

[0066] It is judged whether startup automatic lubrication is configured;

[0067] If startup automatic lubrication is configured, the date of the last startup lubrication is read, the current date is read, and it is judged whether the date of the last startup lubrication is the same as the current date. If they are the same, it means that the startup lubrication treatment has been carried out today and no further lubrication is required. If they are different, the lubrication operation is executed, the current date is recorded, and it is judged whether the lubrication ends normally. If it does not end normally, an alarm message is popped up to prompt the lubrication abnormal information;

[0068] If there is no startup automatic lubrication, the operation ends.

[0069] In some embodiments of the present invention, the working mode setting scheme of the lubrication pump includes:

[0070] Preset the working mode of the lubrication pump, and the working mode of the lubrication pump includes an intermittent working mode or a continuous working mode;

[0071] The intermittent working mode includes: a. Turn on the lubrication pump to increase the pressure of the lubrication pipeline and inject the lubricant into the distributor; b. Calculate the duration of turning on the lubrication pump; c. When the time of turning on the lubrication pump reaches the preset duration, the distributor completes the oil storage work; d. Turn off the lubrication pump, and the lubrication pump starts to relieve pressure to reduce the pressure of the lubrication pipeline, and the spring of the distributor resets; e. Calculate the duration of the lubrication pump in the closed state; f. After the time after the lubrication pump is turned off reaches the preset intermittent time, increase the lubrication times by 1, and judge whether the lubrication times have reached the preset times. If they have reached, end the lubrication and complete the current lubrication operation; if not, return to step a;

[0072] The continuous working mode includes: presetting a working time. After lubrication starts, the lubrication pump is turned on. When the continuous working time of the lubrication pump reaches the preset injection working time, the lubrication pump is stopped to complete this lubrication operation.

[0073] For a specific embodiment, please refer to Figure 4 , Figure 4 which is a schematic flowchart of an embodiment of the lubrication pump working mode setting solution provided by the present invention, and specifically includes:

[0074] If it is determined to be the intermittent working mode, then it is judged whether the number of lubrication times reaches the preset threshold number. If it reaches, the lubrication ends; if it does not reach, the lubrication pump is turned on and it is judged whether the lubrication time reaches the preset time. If the preset time is not reached, it remains in the on state; if the preset time is reached, the lubrication pump is turned off, and it is judged whether the intermittent time reaches the preset time. If not, it remains in the off state. If it reaches, it is judged whether the number of lubrication times reaches the preset number.

[0075] If it is determined to be the continuous working mode, then the lubrication pump is turned on and it is judged whether the lubrication time reaches the preset time. If it does not reach, it remains in the on state. If it reaches, the lubrication pump is turned off.

[0076] In some embodiments of the present invention, the production process of the injection molding machine executes one cycle as one mold; the automatic lubrication interval modulus setting solution includes:

[0077] After the injection molding machine enters the semi-automatic or automatic mode, the modulus is incremented by 1 for each mold produced, and it is judged whether the modulus of the injection molding machine that has worked reaches the preset interval modulus. If it reaches, the automatic lubrication operation is executed;

[0078] Among them, after reaching the preset interval modulus, the recorded modulus of work is cleared and the counting starts again.

[0079] For a specific embodiment, please refer to Figure 5 , Figure 5 which is a schematic flowchart of an embodiment of the automatic lubrication interval modulus setting solution provided by the present invention, and specifically includes:

[0080] Judge whether the injection molding machine is in automatic production. If not, end;

[0081] If so, judge whether the current working cycle of the injection molding machine is over. If not, end;

[0082] If so, increment the working modulus by 1 and judge whether the current working modulus is greater than the preset interval modulus. If not, end;

[0083] If it is greater, clear the working modulus and perform the lubrication process.

[0084] In some embodiments of the present invention, the clogging detection setting scheme includes:

[0085] Start timing each time the lubrication pump is turned on, and detect the pressure signal in real time. If the pressure signal is detected within the preset clogging determination time, it is determined as a clogging fault.

[0086] As a specific embodiment, please refer to Figure 6 , Figure 6 which is a schematic flow diagram of an embodiment of the clogging detection setting scheme provided by the present invention, and specifically includes:

[0087] Turn on the lubrication pump, record the start time, and determine whether the time since the lubrication pump was turned on is less than the preset clogging detection time. If it is not less and no pressure signal is detected, it is determined as not clogged, and the clogging detection ends;

[0088] If it is less, further determine whether there is a pressure signal. If not, continue to determine whether the time since the lubrication pump was turned on is less than the preset clogging detection time. If there is, it is determined as clogged, the lubrication is stopped, a prompt message is popped up, and the machine is prepared to be shut down.

[0089] In some embodiments of the present invention, the oil leakage detection setting scheme includes: start timing after the lubrication pump is turned on, detect the pressure signal in real time, and if no pressure signal is detected after the time since the lubrication pump was turned on reaches the preset oil leakage determination time, it is determined as oil leakage.

[0090] As a specific embodiment, please refer to Figure 7 , Figure 7 which is a schematic flow diagram of an embodiment of the oil leakage detection setting scheme provided by the present invention, and specifically includes:

[0091] Turn on the lubrication pump, record the start time, and determine whether the time since the lubrication pump was turned on is greater than the preset oil leakage detection time. If it is not greater, determine whether there is a pressure signal. If not, continue to determine whether the time since the lubrication pump was turned on is greater than the preset oil leakage detection time. If there is, it is determined as normal, that is, there is no oil leakage situation, and the oil leakage detection ends;

[0092] If the time since the lubrication pump was turned on is greater than the preset oil leakage detection time and no pressure signal is detected, it is determined as oil leakage, the lubrication is stopped, a prompt message is popped up, and the machine is prepared to be shut down.

[0093] In some embodiments of the present invention, the low oil level detection setting scheme includes: continuously detect the low oil level signal after the injection molding machine is started up. If the low oil level signal is detected, a prompt message of low oil level is popped up.

[0094] As a specific embodiment, please refer to Figure 8 , Figure 8Schematic flowchart of an embodiment of the low oil level detection setting solution provided by the present invention, which specifically includes:

[0095] Detect whether there is a low oil level signal,

[0096] If there is, it is determined as low oil level, a prompt message is popped up, and the injection molding machine is stopped after the end of the current production cycle;

[0097] If not, the oil level is normal, and continue to detect the low oil level signal.

[0098] In some embodiments of the present invention, the present invention also provides a method for recording the historical operations of lubrication control, which specifically includes:

[0099] When performing a lubrication task, record the group number and time / date of lubrication execution into the database. When lubrication is abnormal, record the group number, time / date of abnormal lubrication, and the abnormal situation into the database. In this way, when the injection molding machine is in the on state, the lubrication record form (i.e., the database) can be called up to view the historical records of lubrication control.

[0100] In some embodiments of the present invention, in addition to the above-mentioned automatic lubrication setting solutions for startup, automatic lubrication setting solutions with interval modulus, etc., manual lubrication can also be performed, that is: after receiving a manual lubrication instruction, execute the lubrication process according to the preset parameters of the corresponding lubrication group, and lubrication can be stopped at any time during the execution of manual lubrication. It can be understood that manual lubrication can facilitate the operator to actively lubricate the equipment and repair the equipment.

[0101] In summary, the present invention controls different lubrication systems through a control terminal, and lubricates different components in the injection molding machine according to different lubrication strategies, which can improve the adaptability of the injection molding machine computer to the lubrication system and improve the efficiency of automatic lubrication.

[0102] In summary, the above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. An automatic lubrication control system for an injection molding machine, characterized in that, it includes: a control terminal and several lubrication systems, and each lubrication system includes a lubrication pump, a lubrication pipeline and a distributor; the control terminal is used to receive a control instruction and generate an automatic lubrication control strategy according to the control instruction; the several lubrication systems are used to select corresponding lubrication pumps and lubrication pipelines according to the automatic lubrication control strategy, and distribute them to different parts of the injection molding machine through the distributor for lubrication treatment; generating the automatic lubrication control strategy according to the control instruction includes: presetting the number of lubrication pumps of the current injection molding machine according to the control instruction, generating a lubrication system control task corresponding to the lubrication pump, and generating the automatic lubrication control strategy according to the lubrication system control task corresponding to the lubrication pump; wherein, the automatic lubrication control strategy includes a lubrication pump working mode setting scheme; the lubrication pump working mode setting scheme includes: presetting the working mode of the lubrication pump, and the working mode of the lubrication pump includes an intermittent working mode or a continuous working mode; The intermittent working mode includes: a. Turn on the lubrication pump to increase the pressure of the lubrication pipeline and inject lubricant into the distributor; b. Calculate the duration of turning on the lubrication pump; c. When the time of turning on the lubrication pump reaches the preset duration, the distributor completes the oil storage work; d. Turn off the lubrication pump, and the lubrication pump starts to release pressure to reduce the pressure of the lubrication pipeline, and the spring of the distributor resets; e. Calculate the duration of the lubrication pump in the closed state; f. After the time after the lubrication pump is turned off reaches the preset intermittent time, increase the lubrication times by 1, and judge whether the lubrication times have reached the preset times. If so, end the lubrication and complete the current lubrication operation; if not, return to step a and continue to process the opening and stopping of the lubrication pump; The continuous working mode includes: presetting a working time. After lubrication starts, turn on the lubrication pump. When the continuous working time of the lubrication pump reaches the preset working time, stop the lubrication pump and complete the current lubrication operation.

2. The automatic lubrication control system for an injection molding machine according to claim 1, characterized in that, the several lubrication systems include an oil lubrication system and a grease lubrication system; the oil lubrication system includes an oil lubrication pump, a plurality of oil lubrication pipelines and a plurality of oil distributors, and the grease lubrication system includes a grease lubrication pump, a plurality of grease lubrication pipelines and a plurality of grease distributors.

3. The automatic lubrication control system for an injection molding machine according to claim 1, characterized in that, the control terminal includes a controller and an interaction panel; the interaction panel is used to receive the instruction input by the user to generate the control instruction, and the controller is used to generate an automatic lubrication control strategy for the control instruction.

4. An automatic lubrication control method for an injection molding machine, applied to the automatic lubrication control system for an injection molding machine according to any one of claims 1-3, characterized in that, the method includes: receiving a control instruction based on the control terminal and generating an automatic lubrication control strategy according to the control instruction; According to the automatic lubrication control strategy, corresponding lubricating pumps and lubricating pipelines are selected from the several lubrication systems and distributed to different parts of the injection molding machine through a distributor for lubrication treatment; The generation of the automatic lubrication control strategy according to the control instruction includes: Presetting the number of lubricating pumps of the current injection molding machine according to the control instruction, generating a lubrication system control task corresponding to the lubricating pump, and generating the automatic lubrication control strategy according to the lubrication system control task corresponding to the lubricating pump; Among them, the automatic lubrication control strategy includes a lubricating pump working mode setting scheme; The lubricating pump working mode setting scheme includes: Presetting the working mode of the lubricating pump, and the working mode of the lubricating pump includes an intermittent working mode or a continuous working mode; The intermittent working mode includes: a. Turning on the lubricating pump to increase the pressure of the lubricating pipeline and inject lubricant into the distributor; b. Calculating the duration of turning on the lubricating pump; c. When the turning-on time of the lubricating pump reaches the preset duration, the distributor completes the oil storage work; d. Turning off the lubricating pump, and the lubricating pump starts to relieve pressure to reduce the pressure of the lubricating pipeline, and the spring of the distributor resets; e. Calculating the duration of the lubricating pump in the closed state; f. After the time after the lubricating pump is turned off reaches the preset intermittent time, increasing the lubrication times by 1, and judging whether the lubrication times have reached the preset times. If so, ending the lubrication and completing the current lubrication operation; if not, returning to step a to continue processing the turning on and off of the lubricating pump; The continuous working mode includes: presetting a working time. After lubrication starts, turn on the lubricating pump. When the continuous working time of the lubricating pump reaches the preset working time, stop the lubricating pump to complete the current lubrication operation.

5. The automatic lubrication control method for an injection molding machine according to claim 4, characterized in that The automatic lubrication control strategy further includes at least one of a lubrication system control point setting scheme, a lubrication system detection point setting scheme, a power-on automatic lubrication setting scheme, an automatic lubrication interval modulus setting scheme, a blockage detection setting scheme, an oil leakage detection setting scheme, and a low oil level detection setting scheme.

6. The automatic lubrication control method for an injection molding machine according to claim 5, characterized in that The power-on automatic lubrication setting scheme includes: When the injection molding machine is powered on, judging whether this power-on is the first power-on of the day; If so, judging whether there is a lubrication system group with "power-on lubrication" turned on. If there is a turned-on group, executing the lubrication process of the lubrication system group according to the preset configuration for the lubrication system group with "power-on lubrication" turned on, and recording the current date. If not, skipping the process of power-on lubrication treatment; If not, skipping the process of power-on lubrication treatment.

7. The automatic lubrication control method for an injection molding machine according to claim 5, characterized in that One cycle of the production process of the injection molding machine is one mold; the automatic lubrication interval modulus setting scheme includes: After the injection molding machine enters the semi-automatic or automatic mode, the mold number is incremented by 1 for each mold produced, and it is determined whether the number of molds the injection molding machine has worked reaches a preset interval mold number. If it reaches, the automatic lubrication operation is executed; among them, after reaching the preset interval mold number, the recorded mold number of the work is cleared and the counting starts again.

8. The automatic lubrication control method for an injection molding machine according to claim 5, characterized in that the clogging detection setting scheme includes: Timing starts each time the lubrication pump is turned on, and the pressure signal is detected in real time. When the pressure signal is detected within the preset clogging determination time, it is determined as a clogging failure.

9. The automatic lubrication control method for an injection molding machine according to claim 5, characterized in that the oil leakage detection setting scheme includes: Timing starts after the lubrication pump is turned on, and the pressure signal is detected in real time. When the pressure signal has not been detected after the lubrication pump has been turned on for the preset oil leakage determination time, it is determined as oil leakage; the low oil level detection setting scheme includes: after the injection molding machine is turned on, the low oil level signal is continuously detected. If the low oil level signal is detected, a prompt message for low oil level is popped up.

Citation Information

Patent Citations

  • Control method and control device for injection molding machine lubrication, and injection molding machine

    CN111016108A

  • Injection molding machine

    JP2003340900A