Mold die casting apparatus, operation control method, control device, and medium

Abstract

The application discloses a mold die-casting equipment, an operation control method, a control device and a medium, wherein the mold die-casting equipment comprises a die-casting module, a hydraulic module and a vacuum module; the die-casting module comprises a die forming cavity, and a vacuumizing device is arranged in the die forming cavity; the vacuumizing device comprises a piston rod and a vacuum valve; the piston rod is connected with the vacuum valve; the hydraulic module comprises a hydraulic oil tank, a hydraulic pump, an energy storage chamber and a two-position four-way reversing valve; the vacuumizing device comprises a first oil inlet and a first oil outlet; the hydraulic oil tank is connected with the hydraulic pump; the hydraulic pump is connected with the energy storage chamber; the energy storage tank is connected with a first end of the two-position four-way reversing valve; a second end of the two-position four-way reversing valve is connected with a second oil outlet and the hydraulic oil tank respectively; a third end of the two-position four-way reversing valve is connected with the first oil inlet; and a fourth end of the two-position four-way reversing valve is connected with the first oil outlet; the hydraulic oil tank and the energy storage chamber are shared by the vacuum module and the hydraulic module, so that the space occupation of the vacuum module can be effectively reduced, and the production cost is reduced.

Description

Technical Field

[0001] This application relates to, but is not limited to, the field of die casting, and particularly to die casting equipment, operation control method, control device and medium. Background Technology

[0002] In die casting production, it is crucial to strictly control the airtightness of the die casting mold cavity to achieve vacuum die casting, thus preventing defects such as porosity in the castings. Related technologies primarily utilize a vacuum system to evacuate the die casting mold cavity. However, the hydraulic circuit of the vacuum system operates independently from the hydraulic system of the die casting machine, requiring two different sets of equipment. This increases the size of the die casting equipment, occupies surrounding space, and raises production costs. Furthermore, by using different hydraulic circuits for the vacuum and hydraulic systems, a failure in either circuit will affect the operation of the die casting equipment, resulting in poor stability. Summary of the Invention

[0003] The purpose of this application is to at least solve one of the technical problems existing in the prior art, and to provide a mold die casting equipment, operation control method, control device and medium that can effectively reduce the space occupation of the vacuum module, reduce production costs and effectively improve the stability of the mold die casting equipment.

[0004] In a first aspect, embodiments of this application provide a die-casting apparatus, comprising:

[0005] The die-casting module includes a mold forming cavity, a pressure rod, and a drive chamber. The pressure rod includes a pressure head and a drive end. The pressure head is located inside the mold forming cavity, and the drive end is located inside the drive chamber. A distance detector for detecting the distance the drive end moves within the drive chamber is provided inside the drive chamber. A vacuuming device is installed inside the mold forming cavity. The vacuuming device includes a piston rod and a vacuum valve. The piston rod is connected to the vacuum valve.

[0006] A vacuum module includes a vacuum tank and a first reversing valve, wherein the vacuum tank is connected to one end of the first reversing valve and the other end of the first reversing valve is connected to the vacuum pumping device.

[0007] The hydraulic module includes a hydraulic oil tank, a hydraulic pump, an energy storage chamber, a two-position four-way directional valve, a speed control valve, and a second directional valve. The vacuuming device also includes a first oil inlet and a first oil outlet. The drive chamber includes a second oil inlet and a second oil outlet. The hydraulic oil tank is connected to the oil inlet of the hydraulic pump. The oil outlet of the hydraulic pump is connected to the first end of the second directional valve and the oil inlet of the energy storage chamber. The second end of the second directional valve is connected to the second oil inlet. The oil outlet of the energy storage tank is connected to the oil inlet of the speed control valve and the first end of the two-position four-way directional valve. The second end of the two-position four-way directional valve is connected to the second oil outlet and the hydraulic oil tank. The third end of the two-position four-way directional valve is connected to the first oil inlet. The fourth end of the two-position four-way directional valve is connected to the first oil outlet.

[0008] The control module includes a controller, which is electrically connected to the distance detector, the first directional valve, the two-position four-way directional valve, the second directional valve, and the hydraulic pump.

[0009] The die-casting equipment according to the first aspect of this application has at least the following beneficial effects: The molten metal in the mold forming cavity is squeezed by a pressure rod driven by a drive chamber, thus forming the molten metal. A vacuum device is installed in the mold forming cavity. Through the cooperation of a vacuum module and the vacuum device, the mold forming cavity is vacuumed, preventing gas from mixing into the molten metal during the forming process, which would otherwise lead to air bubbles in the mold after forming. A two-position four-way directional valve is connected to a first oil inlet, a first oil outlet, a hydraulic oil tank, and an energy storage chamber. By switching different flow directions using the two-position four-way directional valve, the flow direction of the hydraulic oil in the vacuum device can be controlled. When the two-position four-way directional valve is in the first flow state, the hydraulic oil in the hydraulic oil tank passes through the energy storage chamber and the two-position four-way directional valve, and then enters the vacuum device through the first oil inlet. When the hydraulic oil enters the vacuum device, it pushes the piston rod, causing the vacuum valve to open, and the vacuum module evacuates the mold forming cavity. When the two-position four-way directional valve is in the second flow state, the vacuum device... Hydraulic oil flows out through the first outlet, which in turn drives the piston rod to reset, closing the vacuum valve and stopping the vacuum module from evacuating the mold forming cavity. The vacuum module is connected to the vacuum device pipeline via a two-position four-way directional valve, allowing the vacuum module and hydraulic module to share the energy storage chamber and hydraulic oil tank. This effectively reduces the number of parts required for the vacuum module, thereby lowering the cost of the mold die-casting equipment. Reducing the number of parts also reduces the space occupied by the mold die-casting equipment. Furthermore, sharing the energy storage chamber and hydraulic oil tank between the vacuum and hydraulic modules effectively improves their stability. By setting a speed control valve, the oil inlet speed at the second inlet can be changed, thus altering the movement speed of the pressure rod.

[0010] According to some embodiments of the first aspect of this application, the vacuum module further includes a vacuum filter, and the vacuum pumping device further includes a vacuum extraction port, the vacuum extraction port being connected to a first end pipe of the vacuum filter, and the second end of the vacuum filter being connected to the other end of the first reversing valve.

[0011] According to some embodiments of the first aspect of this application, the hydraulic module further includes a third directional valve, which is disposed between the oil outlet of the energy storage chamber and the speed control valve, and is used to control the flow direction of hydraulic oil in the energy storage chamber.

[0012] According to some embodiments of the first aspect of this application, the hydraulic module further includes an oil filter, the first end of which is connected to the hydraulic oil tank, and the second end of which is connected to the second oil outlet and the second end of the two-position four-way directional valve, respectively.

[0013] According to some embodiments of the first aspect of this application, the hydraulic module further includes a relief valve, the first end of which is connected to the second oil outlet and the second end of the two-position four-way directional valve, and the second end of which is connected to the second end of the oil filter.

[0014] According to some embodiments of the first aspect of this application, the energy storage chamber includes a nitrogen tank, a nitrogen chamber, and a hydraulic oil chamber. The hydraulic oil chamber includes a third oil inlet, a third oil outlet, and a nitrogen port. The nitrogen port is connected to the nitrogen tank, the third oil inlet is connected to the hydraulic pump pipeline, and the third oil outlet is connected to the oil inlet of the speed control valve and the first end pipeline of the two-position four-way directional valve.

[0015] According to some embodiments of the first aspect of this application, the hydraulic module further includes a hydraulically controlled check valve, which is disposed between the first oil outlet and the third end of the two-position four-way directional valve.

[0016] Secondly, embodiments of this application provide an operation control method for a die-casting equipment, applied to the die-casting equipment as described in the first aspect above, the operation control method comprising:

[0017] Obtain the distance traveled by the drive end;

[0018] The operating states of the first reversing valve, the two-position four-way reversing valve, and the second reversing valve are controlled according to the travel distance.

[0019] Thirdly, embodiments of this application provide an operation control device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the operation control method as described in the second aspect.

[0020] Fourthly, embodiments of this application also provide a computer-readable storage medium storing computer-executable instructions for performing the operation control method as described in the second aspect. Attached Figure Description

[0021] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the technical solutions of the present invention, and do not constitute a limitation on the technical solutions of the present invention.

[0022] Figure 1 This is a schematic diagram of a die-casting equipment for molds provided in one embodiment of this application;

[0023] Figure 2 This is a flowchart of the operation control method for die casting equipment provided in the second aspect embodiment of this application;

[0024] Figure 3 This is a schematic diagram of the structure of an operation control device provided in the third aspect embodiment of this application. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of this application. Preferred embodiments of this application are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of this application, but they should not be construed as limiting the scope of protection of this application.

[0026] This section will describe in detail the specific embodiments of this application. Preferred embodiments of this application are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of this application, but they should not be construed as limiting the scope of protection of this application.

[0027] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the stated number, while "above," "below," "within," etc. are understood to include the stated number. "At least one" refers to one or more, and "at least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. If the terms "first" and "second" are used, they are only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] It should be noted that the terms "setting," "installing," and "connecting" in the embodiments of this application should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of the above terms in the embodiments of this application based on the specific content of the technical solution. For example, the term "connection" can be a mechanical connection, an electrical connection, or a connection that allows for mutual communication; it can be a direct connection or an indirect connection through an intermediate medium.

[0029] It should be noted that the technical features involved in the various embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0030] Currently, in die casting production, it is necessary to strictly control the airtightness of the die casting mold cavity to achieve vacuum die casting, in order to avoid defects such as porosity in the castings. Related technologies mainly use a vacuum system to evacuate the die casting mold cavity. However, the hydraulic circuit of the vacuum system and the hydraulic system of the die casting machine operate independently, requiring two different sets of equipment. This increases the size of the die casting equipment, occupies surrounding space, and leads to increased production costs.

[0031] Based on this, embodiments of this application provide a die-casting equipment, control method, control device, and medium. The equipment uses a drive chamber to drive a pressure rod to extrude molten metal in the die-casting cavity, thus forming the molten metal. By setting a speed regulating valve, the oil inlet speed at the second oil inlet can be changed, thereby altering the pressure rod's stamping speed. A vacuum device is installed within the die-casting cavity. Through the cooperation of a vacuum module and the vacuum device, the die-casting cavity is vacuumed, preventing gas from mixing into the molten metal during the forming process, which could lead to air bubbles in the finished die-cast part. The two-position four-way directional valve is connected to the first oil inlet, the first oil outlet, the hydraulic oil tank, and the energy storage chamber. By switching different flow directions through the two-position four-way directional valve, the flow direction of hydraulic oil in the vacuum device can be controlled. When the two-position four-way directional valve is in the first flow state, the hydraulic oil in the hydraulic oil tank passes through the energy storage chamber and the two-position four-way directional valve, and then enters the vacuum device through the first oil inlet. When the hydraulic oil enters the vacuum device, it pushes the piston rod, causing the vacuum valve to open, and the vacuum module evacuates the mold forming cavity. When the two-position four-way directional valve is in the second flow state, the hydraulic oil in the vacuum device flows out through the first oil outlet, which in turn drives the piston rod to reset, causing the vacuum valve to close, and the vacuum module stops evacuating the mold forming cavity. By connecting the two-position four-way directional valve to the vacuum device pipeline, the vacuum module and the hydraulic module share the energy storage chamber and the hydraulic oil tank, which can effectively reduce the number of parts required for the vacuum module, thereby reducing the cost of the die-casting equipment. Furthermore, by reducing the number of parts required for the vacuum module, the space occupied by the die-casting equipment can also be reduced.

[0032] The embodiments of this application will be further described below with reference to the accompanying drawings.

[0033] Reference Figure 1 , Figure 1 This is a schematic diagram of the structure of the die-casting equipment provided in the first aspect embodiment of this application.

[0034] It is understood that, in some embodiments of this application, the die-casting equipment includes a die-casting module, a vacuum module, a hydraulic module, and a control module. The die-casting module includes a die-forming cavity 120, a pressure rod 100, and a drive chamber 110. The pressure rod 100 includes a pressure head 101 and a drive end 102. The pressure head 101 is located inside the die-forming cavity 120, and the drive end 102 is located inside the drive chamber 110. The drive chamber 110 drives the drive end 102, thereby driving the pressure head 101 to move within the die-forming cavity 120. During the die-casting process, molten metal is injected into the die-forming cavity 120. By moving the pressure head 101 within the die-forming cavity 120, the molten metal can fill the die-forming cavity 120. A vacuum device is installed inside the mold forming cavity 120. The vacuum device includes a piston rod and a vacuum valve. The piston rod is connected to the vacuum valve, and the opening and closing of the vacuum valve can be controlled by the piston rod. The vacuum module includes a vacuum tank 300 and a first reversing valve 310. One end of the vacuum tank 300 is connected to the first reversing valve 310, and the other end of the first reversing valve 310 is connected to the vacuum device. The working state of the vacuum tank 300 can be controlled by the first reversing valve 310. When the vacuum valve is in the open state, the vacuum module works to extract air from the mold forming cavity 120. When the vacuum valve is in the closed state, the vacuum module stops extracting air from the mold forming cavity 120. It should be noted that the vacuum tank 300 is under negative pressure. When the vacuum valve is in the open state, because the pressure difference between the mold forming cavity 120 and the vacuum tank 300 creates a pressure difference, air from the mold forming cavity 120 will enter the vacuum tank 300.

[0035] Understandably, the hydraulic module includes a hydraulic oil tank 200, a hydraulic pump 210, an energy storage chamber, a two-position four-way directional valve 220, a speed control valve 260, and a second directional valve 230. The vacuuming device also includes a first oil inlet and a first oil outlet. The drive chamber 110 includes a second oil inlet 111 and a second oil outlet 112. The hydraulic oil tank 200 is connected to the oil inlet of the hydraulic pump 210, and the oil outlet of the hydraulic pump 210 is connected to the first end of the second directional valve 230 and the energy storage chamber, respectively. The oil inlet pipe is connected, the second end of the second directional valve 230 is connected to the second oil inlet 111 pipe, the oil outlet of the energy storage chamber is connected to the oil inlet of the speed control valve 260 and the first end of the two-position four-way directional valve 220 respectively, the second end of the two-position four-way directional valve 220 is connected to the second oil outlet 112 and the hydraulic oil tank 200 respectively, the third end of the two-position four-way directional valve 220 is connected to the first oil inlet, and the fourth end of the two-position four-way directional valve 220 is connected to the first oil outlet. Hydraulic oil is drawn from the hydraulic oil tank 200 by the hydraulic pump 210 to the energy storage chamber and the second directional valve 230. When the second directional valve 230 is open, the hydraulic oil passes through the second directional valve 230 and the second inlet 111 into the drive chamber 110. Once inside the drive chamber 110, the hydraulic oil drives the pressure rod 100 to slowly move towards the second outlet 112. It should be noted that the hydraulic oil in the drive chamber 110 can flow back to the hydraulic oil tank 200 through the second outlet 112 via a pipeline, thus achieving hydraulic oil recovery. Part of the hydraulic oil in the energy storage chamber is delivered to the speed control valve 260, and the other part is delivered to the vacuum device through the two-position four-way directional valve 220. The energy storage chamber also contains a power unit to provide power for the hydraulic oil delivery.

[0036] It should be noted that by sharing the energy storage chamber and hydraulic oil tank between the vacuum module and the hydraulic module, the stability of both modules can be improved. This avoids the situation in related technologies where the vacuum module and hydraulic module use different hydraulic systems, and a failure in either module would affect the operation of the die-casting equipment.

[0037] Understandably, the speed control valve 260 is used to regulate the flow rate of hydraulic oil. When the die-casting module needs to perform high-speed stamping on the mold, the hydraulic oil supplied from the energy storage chamber to the speed control valve 260 is accelerated by the speed control valve 260 and then transported to the second oil inlet 111 through the pipeline. After the hydraulic oil enters the drive chamber 110, it will drive the drive end 102. It should be noted that the higher the oil speed entering the drive chamber 110, the stronger the force of the hydraulic oil on the drive end 102, which in turn makes the pressure rod 100 move faster.

[0038] It should be noted that the hydraulic oil output from the speed control valve 260 will cause the pressure rod 100 to move rapidly. When the pressure rod 100 moves toward the second oil outlet 112, the hydraulic oil flows back to the hydraulic oil tank 200 from the second oil outlet 112. At this time, the pressure rod 100 performs high-speed injection.

[0039] It is understandable that the two-position four-way directional valve 220 includes at least three states: a first flow state, a second flow state, and a neutral state. For example, when the first flow state is right flow, the second flow state is left flow. When the two-position four-way directional valve 220 is in the first flow state, hydraulic oil flows out of the energy storage chamber and into the vacuum device through the first oil inlet. When the hydraulic oil enters the vacuum device, it pushes the piston rod, causing the vacuum valve to be closed, and the vacuum module cannot evacuate the mold forming cavity 120. When the two-position four-way directional valve 220 is in the second flow state, hydraulic oil flows out of the first oil outlet of the vacuum device, passes through the two-position four-way directional valve 220, and flows into the hydraulic oil tank 200 to realize the recovery of hydraulic oil. By connecting the two-position four-way directional valve 220 to the vacuum device, the vacuum module and the hydraulic module share the energy storage chamber and the hydraulic oil tank 200, which can effectively reduce the parts required for the vacuum module, thereby reducing the cost of the mold die-casting equipment. Furthermore, by reducing the parts required for the vacuum module, the space occupied by the mold die-casting equipment can also be reduced.

[0040] It should be noted that when the two-position four-way directional valve 220 is in the first flow state, the first and fourth ends of the two-position four-way directional valve 220 are connected; when the two-position four-way directional valve 220 is in the second flow state, the second and third ends of the two-position four-way directional valve 220 are connected; when the two-position four-way directional valve 220 is in the neutral position, the first, second, third, and fourth ends of the two-position four-way directional valve 220 are all in a half-open state to maintain the pressure on both sides of the two-position four-way directional valve 220.

[0041] It is understood that a distance detector is installed in the drive chamber 110 to detect the distance the drive end 102 moves within the drive chamber 110. The distance detector can provide real-time feedback to the controller on the distance the drive end 102 moves within the drive chamber 110. The control module includes a controller, which is electrically connected to the distance detector, the first directional valve 310, the two-position four-way directional valve 220, the second directional valve 230, and the hydraulic pump 210. The controller can control the working status of the first directional valve 310, the second directional valve 230, the two-position four-way directional valve 220, and the hydraulic pump 210 based on the information fed back by the distance detector.

[0042] Understandably, the vacuum pumping device is also equipped with a contact-type limit switch, which is electrically connected to the controller. When the two-position four-way directional valve 220 is in the second flow state, hydraulic oil flows out from the first oil outlet in the vacuum pumping device, which will drive the piston rod to reset. After the piston rod completes the reset, it will touch the contact-type limit switch. When the contact-type limit switch is touched, it will send a signal to the controller indicating that the piston rod reset is complete. When the piston rod reset is complete, it means that the vacuum valve is closed and the vacuum module stops working.

[0043] Understandably, the hydraulic module also includes a third directional valve 270, which is located between the oil outlet of the energy storage chamber and the speed control valve 260. The third directional valve 270 is used to control whether the hydraulic oil in the energy storage chamber can flow into the speed control valve 260. The controller is electrically connected to the third directional valve 270 and can control the working state of the third directional valve 270.

[0044] It should be noted that the hydraulic module also includes a check valve 290, which is located between the third directional valve 270 and the second oil inlet 111. The check valve 290 is used to control the flow direction of the hydraulic oil and prevent the hydraulic oil from flowing back.

[0045] Understandably, the hydraulic module also includes an oil filter 280. The first end of the oil filter 280 is connected to the hydraulic oil tank 200, and the second end of the oil filter 280 is connected to the second oil outlet 112 and the second end of the two-position four-way directional valve 220, respectively. The oil filter 280 can filter the returning hydraulic oil to prevent the returning hydraulic oil from contaminating the hydraulic oil tank 200, thereby preventing the hydraulic oil from being contaminated.

[0046] Understandably, the hydraulic module also includes a relief valve 221. The first end of the relief valve 221 is connected to the second oil outlet 112 and the second end of the two-position four-way directional valve 220, respectively. The second end of the relief valve 221 is connected to the second end of the oil filter 280. By setting the relief valve 221, it is possible to prevent the hydraulic oil tank 200 from overflowing and flowing back to the second oil outlet 112 and the second end of the two-position four-way directional valve 220.

[0047] It is understood that the energy storage chamber includes a nitrogen tank 250, a nitrogen chamber 240, and a hydraulic oil chamber 241. The hydraulic oil chamber 241 includes a third oil inlet, a third oil outlet, and a nitrogen inlet. The nitrogen inlet is connected to the nitrogen tank 250, the third oil inlet is connected to the hydraulic pump 210 pipeline, and the third oil outlet is connected to the oil inlet of the speed control valve 260 and the first end of the two-position four-way directional valve 220 pipeline, respectively. The nitrogen tank 250 serves as the power unit of the energy storage chamber, providing power for the hydraulic oil delivery.

[0048] Understandably, the hydraulic module also includes a hydraulically controlled check valve 222, which is located between the first oil outlet and the third end of the two-position four-way directional valve 220. The hydraulically controlled check valve 222 can prevent hydraulic oil from flowing back.

[0049] It is understood that the vacuum module also includes a vacuum filter 320, and the vacuum pumping device also includes a vacuum extraction port. The vacuum extraction port is connected to the first end of the vacuum filter 320, and the second end of the vacuum filter 320 is connected to the other end of the first reversing valve 310. By setting the vacuum filter 320, impurities in the air can be prevented from entering the vacuum tank 300.

[0050] The modular pressing device described in this application is for the purpose of more clearly illustrating the technical solutions of this application, and does not constitute a limitation on the technical solutions provided in this application. Those skilled in the art will know that with the evolution of die casting equipment and the emergence of new application scenarios, the technical solutions provided in this application are also applicable to similar technical problems.

[0051] It will be understood by those skilled in the art that Figure 1 The structure of the modular pressing device shown does not constitute a limitation on the embodiments of this application. It may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0052] Based on the structure of the modular pressing device described above, various embodiments of the operation control method of the modular pressing device of this application are proposed.

[0053] Reference Figure 2 , Figure 2 This is a flowchart of an operation control method for a die-casting equipment provided in a second aspect embodiment of this application, the operation control method comprising:

[0054] Step S100: Obtain the travel distance of the driver.

[0055] Step S200: Control the working status of the first directional valve, the two-position four-way directional valve and the second directional valve according to the travel distance.

[0056] Understandably, the controller obtains the movement distance of the drive end through a distance detector in the drive chamber, and then controls the working state of the first reversing valve, the two-position four-way reversing valve, and the second reversing valve according to the movement distance. For example, the movement distance includes a first movement distance and a second movement distance, where the second movement distance is greater than the first movement distance. When the drive end moves the first movement distance, the controller controls the two-position four-way reversing valve to be in the first flow state. The hydraulic oil in the energy storage chamber flows through the two-position four-way reversing valve and into the vacuum cylinder through the first oil inlet. The hydraulic oil flowing into the vacuum cylinder pushes the piston rod, which drives the vacuum valve to move, and the vacuum valve is in the open state. Then, the controller controls the first reversing valve to be in the open state, and the vacuum tank evacuates the mold forming cavity. When the drive end moves the second moving distance, the controller controls the two-position four-way directional valve to be in the second flow state. The hydraulic oil in the vacuum cylinder flows out from the first oil outlet, and after passing through the two-position four-way directional valve, it flows into the hydraulic oil tank. When the hydraulic oil flows out from the first oil outlet, it will drive the piston rod to reset, and the vacuum valve will be in the closed state. At this time, the vacuum module completes the vacuum extraction of the mold forming chamber, controls the first directional valve to be in the closed state, and then the controller controls the second directional valve to be in the closed state. The speed regulating valve is opened to accelerate the hydraulic oil supplied from the energy storage chamber to the speed regulating valve. At this time, the hydraulic oil is only supplied to the second oil inlet through the speed regulating valve.

[0057] Understandably, in another embodiment, when the drive end moves a first distance, it indicates that the die-casting equipment is in a ready state and needs to evacuate the mold forming cavity. Therefore, the controller controls the two-position four-way directional valve to be in the first flow state. The hydraulic oil in the energy storage chamber flows through the two-position four-way directional valve and into the vacuum cylinder through the first oil inlet. The hydraulic oil flowing into the vacuum cylinder pushes the piston rod, which drives the vacuum valve to move, and the vacuum valve is in the open state. Then, the controller controls the first directional valve to be in the open state, and the vacuum tank evacuates the mold forming cavity. When the drive end moves a second distance, it indicates that the die-casting equipment needs to perform high-speed injection. Therefore, the controller controls the two-position four-way directional valve to be in the second flow state, causing the hydraulic oil in the vacuum device to flow back, thereby resetting the piston rod and closing the vacuum valve. Then, the speed control valve is opened to accelerate the hydraulic oil supplied from the energy storage chamber to the speed control valve.

[0058] Understandably, in another embodiment, the controller will also receive a signal from a contact-type limit switch. When the piston rod is fully reset, it will touch the contact-type limit switch, which will send a signal to the controller. Only after receiving the signal will the controller control the speed control valve and the second shift switch to work, so that the die-casting equipment enters the high-speed injection state. This can prevent damage to the vacuum module caused by high-speed injection when the vacuum valve is not fully closed.

[0059] It should be noted that, in another embodiment, the distance between the second oil inlet and the second oil outlet is 1000mm. Then, the first moving distance can be 260mm, that is, the driving end moves 260mm from the second oil inlet to the second oil outlet; the second moving distance can be 650mm, that is, the driving end moves 650mm from the second oil inlet to the second oil outlet.

[0060] Thirdly, referring to Figure 3 This application provides an operation control device 400, including a memory 420, a processor 410, and a computer program stored in the memory 420 and executable on the processor 410. The processor 410 executes the program to implement the operation control method for the die-casting equipment as described in the second aspect embodiment above, for example, executing... Figure 2 The method steps S100 to S200.

[0061] The memory 420, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs, such as the operation control method for the die-casting equipment in the above embodiments of this application. The processor 410 implements the operation control method for the die-casting equipment in the above embodiments of this application by running the non-transitory software program and instructions stored in the memory 420.

[0062] The memory 420 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data required for executing the operation control method of the die-casting equipment in the above embodiments. Furthermore, the memory 420 may include a high-speed random access memory 420, and may also include non-transitory memory 420, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. It should be noted that the memory 420 may optionally include memory 420 remotely located relative to the processor 410, and these remote memories 420 can be connected to the terminal via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0063] Fourthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions for causing a computer to perform the operation control method described in the second aspect of the embodiment above, such as executing... Figure 2 The method steps S100 to S200.

[0064] It will be understood by those skilled in the art that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which may include computer storage media or non-transitory media and communication media or transient media. As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information such as computer-readable instructions, data structures, program modules, or other data. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc DVD or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0065] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A die-casting equipment for molds, characterized in that, include: The die-casting module includes a mold forming cavity, a pressure rod, and a drive chamber. The pressure rod includes a pressure head and a drive end. The pressure head is located inside the mold forming cavity, and the drive end is located inside the drive chamber. A distance detector for detecting the distance the drive end moves within the drive chamber is provided inside the drive chamber. A vacuuming device is installed inside the mold forming cavity. The vacuuming device includes a piston rod and a vacuum valve. The piston rod is connected to the vacuum valve. A vacuum module includes a vacuum tank and a first reversing valve, wherein the vacuum tank is connected to one end of the first reversing valve and the other end of the first reversing valve is connected to the vacuum pumping device. The hydraulic module includes a hydraulic oil tank, a hydraulic pump, an energy storage chamber, a two-position four-way directional valve, a speed control valve, and a second directional valve. The vacuuming device further includes a first oil inlet and a first oil outlet. The drive chamber includes a second oil inlet and a second oil outlet. The hydraulic oil tank is connected to the oil inlet of the hydraulic pump. The oil outlet of the hydraulic pump is connected to the first end of the second directional valve and the oil inlet of the energy storage chamber. The second end of the second directional valve is connected to the second oil inlet. The oil outlet of the energy storage chamber is connected to the oil inlet of the speed control valve and the first end of the two-position four-way directional valve. The second end of the two-position four-way directional valve is connected to the second oil outlet and the hydraulic oil tank. The third end of the two-position four-way directional valve is connected to the first oil outlet. The fourth end of the two-position four-way directional valve is connected to the first oil inlet. The control module includes a controller, which is electrically connected to the distance detector, the first directional valve, the two-position four-way directional valve, the second directional valve, the piston rod, and the hydraulic pump. Specifically, when the two-position four-way directional valve is in the first flow state, the first and fourth ends of the two-position four-way directional valve are connected; when the two-position four-way directional valve is in the second flow state, the second and third ends of the two-position four-way directional valve are connected. The vacuum device is also equipped with a contact-type limit switch, which is electrically connected to the controller. If the two-position four-way directional valve is in the second flow state, hydraulic oil flows out from the first oil outlet and drives the piston rod to reset. When the piston rod completes the reset, it will touch the contact-type limit switch, and the contact-type limit switch sends a signal to the controller indicating that the piston rod reset is complete.

2. The die-casting equipment according to claim 1, characterized in that, The vacuum module further includes a vacuum filter, and the vacuum pumping device further includes a vacuum extraction port. The vacuum extraction port is connected to the first end of the vacuum filter via a pipe, and the second end of the vacuum filter is connected to the other end of the first reversing valve.

3. The die-casting equipment according to claim 1, characterized in that, The hydraulic module also includes a third directional valve, which is located between the oil outlet of the energy storage chamber and the speed control valve. The third directional valve is used to control the flow direction of hydraulic oil in the energy storage chamber.

4. The die-casting equipment according to claim 1, characterized in that, The hydraulic module also includes an oil filter, the first end of which is connected to the hydraulic oil tank, and the second end of which is connected to the second oil outlet and the second end of the two-position four-way directional valve.

5. The die-casting equipment according to claim 4, characterized in that, The hydraulic module also includes a relief valve, the first end of which is connected to the second oil outlet and the second end of the two-position four-way directional valve, and the second end of the relief valve is connected to the second end of the oil filter.

6. The die-casting equipment according to claim 1, characterized in that, The energy storage chamber includes a nitrogen tank, a nitrogen chamber, and a hydraulic oil chamber. The hydraulic oil chamber includes a third oil inlet, a third oil outlet, and a nitrogen inlet. The nitrogen inlet is connected to the nitrogen tank, the third oil inlet is connected to the hydraulic pump pipeline, and the third oil outlet is connected to the inlet of the speed control valve and the first end of the two-position four-way directional valve pipeline.

7. The die-casting equipment according to claim 1, characterized in that, The hydraulic module also includes a hydraulically controlled check valve, which is located between the first oil outlet and the third end of the two-position four-way directional valve.

8. A method for controlling the operation of a die-casting equipment, characterized in that, The method, applied to the die-casting equipment as described in any one of claims 1 to 7, comprises: Obtain the distance traveled by the drive end; The operating states of the first reversing valve, the two-position four-way reversing valve, and the second reversing valve are controlled according to the travel distance.

9. An operation control device, characterized in that, It includes a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing the program to implement the operation control method for the die casting equipment as described in claim 8.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions for causing a computer to perform the operation control method for the die-casting equipment as described in claim 8.

Images