Die casting apparatus for automobile profiled parts and die casting state detection method

Abstract

The application belongs to the field of automobile part die casting equipment and discloses an automobile special-shaped part die casting equipment and a die casting state detection method. The die casting equipment comprises a die casting equipment main body, a gantry support, a position adjustment assembly and a pressing plate assembly. The die casting equipment main body is provided with an upper die plate, a lower die plate and a vertical guide column. The upper die plate is provided with a plurality of local extrusion die plates which are vertically and slidingly connected to the guide column. The gantry support is horizontally arranged above the die parting surface of the die casting equipment. The position adjustment assembly comprises a first oil cylinder and a sliding member. The first oil cylinder is arranged at the end of the gantry support and can drive the sliding member to slide along the gantry support. The pressing plate assembly comprises a rotating rod, a second oil cylinder and a pressing head. The rotating rod and one end of the second oil cylinder are hingedly connected to the sliding member, and the other end of the rotating rod and the second oil cylinder are hingedly connected to each other. The pressing head is rotationally connected to the rotating rod. The second oil cylinder can drive the rotating rod to rotate and drive the pressing head to extrude the local extrusion die plate, so that the pressure compensation of the specific die area can be realized and the die casting production effect can be improved.

Description

Technical Field

[0001] This application relates to the field of automotive parts die-casting equipment technology, and more specifically, to a die-casting equipment and a die-casting condition detection method for irregularly shaped automotive parts. Background Technology

[0002] Irregularly shaped automotive parts can be manufactured using die casting. Die casting relies on specialized equipment to process the parts. The raw metal is preheated to a molten state, and then the molten metal is injected into a die-casting mold cavity at a set speed and pressure using the equipment's power mechanism. After the molten metal cools and solidifies within the cavity, it is demolded to obtain the automotive part with the desired structural shape. Compared to other forming processes, die casting can accommodate the complex structural designs of irregularly shaped automotive parts, achieve high dimensional accuracy, and offers advantages such as high production efficiency and suitability for mass production. Therefore, it has been widely used in the automotive parts manufacturing industry.

[0003] In the process of producing irregularly shaped automotive parts using die-casting equipment, the structural complexity varies in different areas within the die-casting mold. The flow resistance and cooling rate of the molten metal during filling are inconsistent in each area, requiring corresponding matching of differentiated local pressure parameters. However, existing die-casting equipment typically uses a unified overall pressure control, failing to achieve precise pressure output adjustment for specific areas of the mold. Due to this lack of high-precision control over local mold pressure, insufficient pressure can easily occur when the molten metal fills local areas of the cavity. This ultimately leads to molding defects such as porosity, cold shuts, and incomplete filling in the finished parts, directly reducing the production yield of irregularly shaped automotive parts and failing to meet the processing standards for high-performance automotive parts. Summary of the Invention

[0004] The purpose of this application is to provide a die-casting equipment and a die-casting condition detection method for automotive irregular parts, which solves the technical problem of difficulty in accurately controlling the local pressure of the die-casting mold when producing automotive irregular parts by die-casting equipment, and achieves the technical effect of pressure compensation in specific mold areas and improving the die-casting production effect.

[0005] In a first aspect, embodiments of this application provide a die-casting apparatus for irregularly shaped automotive parts, including a die-casting apparatus, a gantry support, a position adjustment assembly, and a pressure plate assembly. The die-casting apparatus includes an upper template, a lower template, and vertically arranged guide columns. The upper template is provided with multiple partial extrusion templates. The gantry support is horizontally arranged above the parting surface of the die-casting apparatus, and the multiple partial extrusion templates are vertically slidably connected to the guide columns. The position adjustment assembly includes a first hydraulic cylinder and a sliding member. The first hydraulic cylinder is located at the end of the gantry support, and the sliding member is slidably connected to the gantry support. The first hydraulic cylinder is used to drive the sliding member to slide along the gantry support. The pressure plate assembly includes a rotating rod, a second hydraulic cylinder, and a pressure head. The first end of the rotating rod and the first end of the second hydraulic cylinder are respectively hinged to the sliding member, and the second end of the rotating rod and the second end of the second hydraulic cylinder are hinged together. The pressure head is rotatably connected to the rotating rod, and the second hydraulic cylinder is used to drive the rotating rod to rotate so as to drive the pressure head to extrude the partial extrusion templates.

[0006] In one possible implementation, the system further includes a rotary encoder, an injection unit, and a die-casting control unit. The rotary encoder is mounted on the shaft of the rotating rod and is used to detect the rotation angle of the rotating rod. The injection unit is used to inject molten metal between the upper and lower mold plates. The die-casting control unit is electrically connected to both the rotary encoder and the injection unit. The die-casting control unit is used to acquire the injection pressure value of the injection unit, the preset angle detection value corresponding to the injection pressure value, and the real-time angle detection value of the rotary encoder. The die-casting control unit is also used to determine the difference between the preset angle detection value and the real-time angle detection value as the real-time angle deviation value. The die-casting control unit is also used to acquire the preset angle deviation value. When the real-time angle deviation value is greater than or equal to the preset angle deviation value, the die-casting control unit controls the injection unit to stop injecting molten metal between the upper and lower mold plates.

[0007] In another possible implementation, the first cylinder is controlled by a first proportional hydraulic valve to reach a first extended position, and the second cylinder is controlled by a second proportional hydraulic valve to reach a second extended position. The die-casting control unit is electrically connected to the first and second proportional hydraulic valves respectively, so as to control the first and second cylinders to adapt to the extrusion of local extrusion templates of different shapes.

[0008] In another possible implementation, when the real-time angle detection value is less than the preset angle detection value, and when the real-time angle deviation value is greater than or equal to the preset angle deviation value, the die-casting control unit controls the second hydraulic cylinder to increase the preset extrusion pressure within a first time period to drive the rotating rod downward and reduce the real-time angle deviation value; when the real-time angle deviation value is less than the preset angle deviation value after the first time period, the die-casting control unit controls the injection unit to continue injecting molten metal between the upper and lower mold plates; when the real-time angle deviation value is still greater than or equal to the preset angle deviation value after the first time period, the die-casting control unit controls the injection unit to stop injecting molten metal between the upper and lower mold plates.

[0009] In another possible implementation, the guide post is vertically connected to the slider, and the guide post is provided with a limiting plate for vertically limiting the highest position of the local extrusion template; the bottom of the pressure head is provided with rollers to facilitate the sliding of the pressure head relative to the top surface of the local extrusion template.

[0010] In another possible implementation, there are at least two gantry supports, each with two pressure plate assemblies. Each pressure plate assembly has multiple guide posts on its sliding component. Each guide post corresponding to each pressure plate assembly has a pressure sensor on its limiting plate. The die-casting control unit is electrically connected to the pressure sensors corresponding to the two pressure plate assemblies. The die-casting control unit is also used to determine the first average pressure value and the first variance value of the pressure sensors on the multiple guide posts corresponding to each pressure plate assembly. When the first average pressure value of the multiple pressure plate assemblies is greater than or equal to a preset first average pressure value and the first variance value is less than a preset first variance value, the die-casting control unit is also used to determine the variance value of the multiple first average pressure values ​​corresponding to the multiple pressure plate assemblies as the second variance value. The die-casting control unit is also used to control the second cylinders of the multiple pressure plate assemblies to start running and extruding multiple local extrusion templates when the second variance value is less than the preset second variance value.

[0011] In another possible implementation, the die-casting control unit is also used to control the injection unit to continue injecting molten metal between the upper and lower mold plates when the first average pressure value is less than the preset first average pressure value, or the first pressure variance value is greater than or equal to the preset first pressure variance value.

[0012] In another possible implementation, when the average first pressure of multiple pressure plate assemblies is greater than or equal to a preset average first pressure and the first pressure variance is less than a preset first pressure variance, the die-casting control unit is further configured to determine the variance of the multiple average first pressures corresponding to the multiple pressure plate assemblies as a second pressure variance; when the second pressure variance is greater than or equal to a preset second pressure variance, a first duration for which the second pressure variance is greater than or equal to the preset second pressure variance is determined; when the first duration is greater than or equal to the preset first duration, the die-casting control unit issues a prompt message to indicate that the position of the local extrusion template should be corrected.

[0013] In another possible implementation, the die-casting control unit is also used to obtain the pressure compensation priority corresponding to multiple pressure plate assemblies; the die-casting control unit is also used to control the second cylinder of the first pressure plate assembly to start running to extrude the local extrusion template corresponding to the first pressure plate assembly according to the pressure compensation priority of multiple pressure plate assemblies, when the first pressure average value of the first pressure plate assembly corresponding to the highest pressure compensation priority is greater than or equal to the preset first pressure average value and the first pressure variance value is less than the preset first pressure variance value.

[0014] Secondly, embodiments of this application provide a die-casting state detection method, the method comprising: a die-casting control unit acquiring an injection pressure value of an injection unit, a preset angle detection value corresponding to the injection pressure value, and a real-time angle detection value of a rotary encoder; the die-casting control unit further determining the difference between the preset angle detection value and the real-time angle detection value as a real-time angle deviation value; the die-casting control unit acquiring the preset angle deviation value; and when the real-time angle deviation value is greater than or equal to the preset angle deviation value, the die-casting control unit controlling the injection unit to stop injecting molten metal between the upper and lower mold plates.

[0015] The beneficial effects of the embodiments in this application compared with the prior art are: This application provides a die-casting device for automotive irregular-shaped parts. A gantry support is horizontally positioned above the parting surface of the die-casting device, and multiple local extrusion templates are vertically slidably connected to guide columns. A position adjustment assembly includes a first hydraulic cylinder and a sliding member. The first hydraulic cylinder is located at the end of the gantry support, and the sliding member is slidably connected to the gantry support. The first hydraulic cylinder drives the sliding member to slide along the gantry support. A pressure plate assembly includes a rotating rod, a second hydraulic cylinder, and a pressure head. The first end of the rotating rod and the first end of the second hydraulic cylinder are respectively hinged to the sliding member, and the second end of the rotating rod and the second end of the second hydraulic cylinder are hinged together. The pressure head is rotatably connected to the rotating rod, and the second hydraulic cylinder drives the rotating rod to rotate, thereby causing the pressure head to extrude the local extrusion templates. In this embodiment, the second hydraulic cylinder drives the rotating rod to rotate, causing the pressure head to move towards the local extrusion templates and apply pressure. This allows for precise pressure replenishment of local areas prone to insufficient filling during the die-casting process of automotive irregular-shaped parts, effectively reducing defects such as shrinkage cavities and porosity in automotive irregular-shaped parts, and improving the forming quality of the parts. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of a first type of die-casting equipment for irregularly shaped automotive parts provided in this application embodiment; Figure 2 A schematic diagram of the control structure of a first type of die-casting equipment for irregularly shaped automotive parts provided in this application embodiment; Figure 3 This is a flowchart illustrating a die-casting state detection method provided in an embodiment of this application. Detailed Implementation

[0018] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0019] It should be noted that when a component or structure is referred to as being "fixed to" or "set on" another component or structure, it can be directly on or indirectly on the other component or structure. When a component or structure is referred to as being "connected to" another component or structure, it can be directly connected to or indirectly connected to the other component or structure.

[0020] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device, component, or structure referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] In the process of producing irregularly shaped automotive parts using die casting equipment, the lack of high-precision control over the local pressure of the mold can easily lead to insufficient pressure when the molten metal fills the local area of ​​the cavity, resulting in molding defects such as porosity, cold shuts, and incomplete filling in the molded parts.

[0023] Based on the above reasons, this application provides a die-casting equipment for irregularly shaped automotive parts, including a die-casting machine, a gantry support, a position adjustment assembly, and a pressure plate assembly. The die-casting machine includes an upper template, a lower template, and vertically arranged guide columns. The upper template is provided with multiple partial extrusion templates. The gantry support is horizontally arranged above the parting surface of the die-casting machine, and the multiple partial extrusion templates are vertically slidably connected to the guide columns. The position adjustment assembly includes a first hydraulic cylinder and a sliding member. The first hydraulic cylinder is located at the end of the gantry support, and the sliding member is slidably connected to the gantry support. The first hydraulic cylinder is used to drive the sliding member to slide along the gantry support. The pressure plate assembly includes a rotating rod, a second hydraulic cylinder, and a pressure head. The first end of the rotating rod and the first end of the second hydraulic cylinder are respectively hinged to the sliding member. The second end of the rotating rod and the second end of the second hydraulic cylinder are hinged together. The pressure head is rotatably connected to the rotating rod. The second hydraulic cylinder is used to drive the rotating rod to rotate so that the pressure head can extrude the partial extrusion templates. In this embodiment, the second hydraulic cylinder drives the rotating rod to rotate, causing the pressure head to move toward the local extrusion template and apply pressure. This allows for precise pressure replenishment of local areas prone to insufficient filling during the die casting process of automotive irregular-shaped parts, effectively reducing defects such as shrinkage cavities and porosity in automotive irregular-shaped parts and improving the forming quality of the parts.

[0024] In some scenarios, the die-casting equipment for irregularly shaped automotive parts according to the embodiments of this application can be applied to the mass production of complex automotive structure brackets. It is suitable for die-casting irregularly shaped structures with multiple curvatures and internal cavities, and can accurately squeeze and shrink to reduce internal porosity of parts and improve structural strength.

[0025] In other scenarios, the die-casting equipment for irregularly shaped automotive parts according to the embodiments of this application can also be applied to the small-batch customization of motor housings for new energy vehicles, flexibly adjusting the position of the pressure head to adapt to the local thick-walled areas of different housings, and shortening the changeover and debugging cycle.

[0026] The following describes in detail, with specific examples, a die-casting equipment for irregularly shaped automotive parts provided in the embodiments of this application.

[0027] Figure 1 A schematic diagram of the structure of a first type of die-casting equipment for irregularly shaped automotive parts provided in this application embodiment is shown below. Figure 1 As shown in the figure, this application provides a die-casting equipment for irregularly shaped automotive parts, which will be described in detail below.

[0028] The embodiments of this application include a die-casting equipment 1, a gantry bracket 2, a position adjustment assembly 3, and a pressure plate assembly 4.

[0029] In this implementation, the die-casting equipment 1 provides a supporting foundation for the overall die-casting operation, and all other components are arranged around the die-casting equipment 1 to complete the forming and processing steps of the die-cast parts.

[0030] In this implementation, the gantry support 2 spans the working area above the die-casting equipment 1, providing a mounting base for the position adjustment assembly 3 and the pressure plate assembly 4, while leaving enough space for the opening and closing of the die-casting mold and the loading and unloading of die-cast parts.

[0031] It should be noted that the gantry support 2 can adopt an integrated welded structure with double vertical beams and a horizontal beam, or it can adopt a split splicing structure. The horizontal beam is used to support subsequent functional components, and the double vertical beams are located on both sides of the working area to provide sufficient structural support strength.

[0032] For example, the frame body of the die-casting equipment 1 extends to a horizontal mounting base. Positioning pin holes are pre-machined on the mounting base. The mounting flange at the bottom of the vertical beam of the gantry support 2 is correspondingly machined with positioning pin holes. After the positioning pins are inserted into the pin holes to complete the positioning, the mounting flange is locked and fixed to the mounting base extending from the die-casting equipment 1 by tightening bolts, thus completing the installation and fixing of the gantry support 2 relative to the die-casting equipment 1.

[0033] In this implementation, the position adjustment component 3 is installed on the crossbeam of the gantry bracket 2, and can adjust its horizontal position along the length of the crossbeam to adapt to the corresponding position of the die-casting plate components to be pressed on different sized die-casting molds.

[0034] In this implementation, the pressure plate assembly 4 is connected and installed on the position adjustment assembly 3, which can press the parting surface of the die-casting mold to prevent overflow of material in the cavity during the die-casting process.

[0035] In some implementations, the die-casting equipment 1 includes an upper mold 11, a lower mold 12, and a vertically arranged guide column 21. The upper mold 11 is provided with multiple local extrusion molds 111. A gantry support 2 is horizontally arranged above the parting surface of the die-casting equipment 1, and the multiple local extrusion molds 111 are vertically slidably connected to the guide column 21.

[0036] In this implementation, the die-casting equipment 1 consists of an upper template 11, a lower template 12, and a vertically arranged guide column 21, which work together to complete the mold closing and die-casting forming processes in the die-casting operation.

[0037] It should be noted that the upper template 11 can serve as the base for installing the moving mold in the die casting operation. It completes the mold closing and opening action with the drive structure. The whole is a rigid metal plate structure with reserved mold installation interface. At the same time, the upper template 11 has reserved area for installing the local extrusion template 111.

[0038] For example, the upper template 11 is a rectangular thick steel plate structure with multiple sets of threaded mounting holes machined on the plate to fix the die-casting upper mold. Guide through holes are machined at the four corners of the plate to cooperate with the guide column 21 to complete the vertical movement guidance.

[0039] It should be noted that the lower template 12 can serve as the fixed mold installation base for die casting operations, and can be fixedly installed on the base of the die casting equipment to provide stable support for mold closing.

[0040] For example, the lower template 12 is also a rectangular thick steel plate structure, with its bottom surface fitting into the mounting surface of the base of the die-casting equipment 1. Positioning grooves and mounting holes are machined on the plate to fix the lower die-casting mold. Blind holes for mounting guide columns 21 are opened at the four corners of the top surface to fix the bottom of the guide columns 21.

[0041] It should be noted that the local extrusion template 111 can apply additional pressure to the thick-walled areas of the die-cast workpiece to prevent shrinkage defects in the thick-walled areas. Each local extrusion template 111 can be adjusted independently.

[0042] For example, the local extrusion template 111 is an independent block structure with an extrusion head at the bottom. The outline of the extrusion head matches the cavity outline of the position to be extruded. An installation interface for connecting the drive component is opened at the top, and guide through holes are machined on the side.

[0043] In this implementation, multiple independently operating local extrusion templates 111 are set on the upper template 11 to perform local pressure on different positions of the formed casting.

[0044] In this implementation, multiple local extrusion templates 111 are vertically slidably connected to the guide post 21, and can move independently along the axial direction of the guide post 21 to complete the pressure compensation action.

[0045] It should be noted that the local extrusion template 111 and the guide post 21 can achieve a sliding fit through the bushing. The bushing reduces wear during the sliding process and ensures sliding accuracy.

[0046] It should be noted that when multiple local extrusion templates 111 slide vertically along the guide post 21, they can be driven by independent hydraulic cylinders. After the mold is closed, the hydraulic cylinder pushes the corresponding local extrusion template 111 to slide downward along the guide post 21, and holds pressure after reaching the preset position.

[0047] For example, after the mold is closed, the hydraulic cylinder corresponding to the thick wall position of the casting outputs power to push the corresponding local extrusion template 111 to slide down along the guide post 21 to extrude the molten metal inside the cavity. After the pressure is maintained, the hydraulic cylinder can pull the local extrusion template 111 to slide up along the guide post 21 and return to the initial position. Multiple local extrusion templates 111 complete the corresponding actions in sequence or simultaneously.

[0048] In some implementations, the position adjustment component 3 includes a first hydraulic cylinder 31 and a slider 32. The first hydraulic cylinder 31 is located at the end of the gantry bracket 1, and the slider 32 is slidably connected to the gantry bracket 2. The first hydraulic cylinder 31 is used to drive the slider 32 to slide along the gantry bracket 2.

[0049] In this implementation, the position adjustment component 3 consists of a first hydraulic cylinder 31 and a sliding component 32, and is used to adjust the lateral position of the pressure plate component 4 to adapt to the operational requirements of die-casting molds of different specifications.

[0050] In this implementation, the first hydraulic cylinder 31 is located at the end of the gantry bracket 2 to provide power output for the sliding of the sliding member 32.

[0051] In this implementation, the sliding member 32 is slidably connected to the gantry bracket 2. The sliding member 32 is used to support the subsequent pressure plate assembly 4, and the working position is adjusted according to the sliding member 32.

[0052] For example, two parallel linear guide rails are fixedly installed on the top surface of the load-bearing beam of the gantry bracket 2 along the length direction. The bottom surface of the sliding member 32 is fixedly installed with a slider that matches the guide rail by bolts. The slider is engaged on the guide rail and slides along the length direction of the guide rail.

[0053] In this implementation, the first hydraulic cylinder 31 is used to drive the sliding member 32 to slide along the gantry bracket 2, and output linear power to adjust the position of the sliding member 32.

[0054] For example, the tail of the cylinder of the first cylinder 31 is fixedly mounted on the end of the crossbeam of the gantry bracket 2 via a hinge seat, and the end of the piston rod of the first cylinder 31 is fixed to the side wall of the sliding member 32 via a flange. The power is directly transmitted to the sliding member 32 through the piston rod.

[0055] For example, when the position needs to be adjusted inwards towards the gantry bracket 2, the piston rod of the first hydraulic cylinder 31 extends, pushing the sliding member 32 to slide along the guide rail towards the middle of the crossbeam. After reaching the desired position, the first hydraulic cylinder 31 stops moving and maintains its position. When resetting is required, the piston rod of the first hydraulic cylinder 31 retracts, pulling the sliding member 32 to slide along the guide rail towards the end of the crossbeam back to its initial position.

[0056] In some implementations, the pressure plate assembly 4 includes a rotating rod 41, a second hydraulic cylinder 42, and a pressure head 43. The first end of the rotating rod 41 and the first end of the second hydraulic cylinder 42 are respectively hinged to the sliding member 32. The second end of the rotating rod 41 and the second end of the second hydraulic cylinder 42 are hinged together. The pressure head 43 is rotatably connected to the rotating rod 41. The second hydraulic cylinder 42 is used to drive the rotating rod 41 to rotate so that the pressure head 43 can press the local extrusion template 111.

[0057] In this implementation, the pressure plate assembly 4 consists of a rotating rod 41, a second oil cylinder 42, and a pressure head 43, and is mounted on the sliding member 32 to provide stable extrusion force to the local extrusion template 111.

[0058] For example, the pressure head 43 includes an integrally formed connecting shaft section and a contact head. The contact head has a cylindrical structure with a smooth flat bottom surface that is in contact with the top surface of the local extrusion template 111.

[0059] In this implementation, the first end of the rotating rod 41 and the first end of the second oil cylinder 42 are respectively hinged to the sliding member 32, and both can rotate around the hinge axis.

[0060] For example, two parallel hinge plates are fixedly welded to the bottom surface of the sliding member 32. A coaxial through hole is machined at the first end of the rotating rod 41, which extends between the two hinge plates. After aligning the through hole, a cylindrical hinge shaft is inserted. The two ends of the hinge shaft are limited by snap rings, and the rotating rod 41 can rotate around the hinge shaft.

[0061] It should be noted that the first end of the second hydraulic cylinder 42 and the sliding member 32 can be hinged together by a hinge seat and a pin to meet the swing angle requirements of the second hydraulic cylinder 42 during extension and retraction.

[0062] For example, a hinge seat is fixedly installed on the bottom surface of the sliding member 32, and a connecting ear is machined at the tail of the cylinder of the second cylinder 42. The connecting ear extends into the slot of the hinge seat, and after aligning with the hole, it is inserted into the pin. Retaining rings are installed at both ends of the pin to limit the movement, and the second cylinder 42 can swing around the pin.

[0063] In this implementation, the second end of the rotating rod 41 and the second end of the second oil cylinder 42 are hinged together. When the second oil cylinder 42 extends or retracts, it can drive the rotating rod 41 to rotate around the hinge axis of the first end.

[0064] For example, a double-ear connector is machined at the end of the piston rod of the second cylinder 42, and a single connector is machined at the second end of the rotating rod 41. The single connector extends into the slot of the double-ear connector, aligns with the hole position, and then passes through the hinge shaft. The two ends of the hinge shaft are limited by locking nuts, and the two can rotate relative to each other around the hinge shaft.

[0065] In this implementation, the pressure head 43 is rotatably connected to the rotating rod 41. The pressure head 43 can adaptively conform to the top surface of the local extrusion template 111 to maintain uniform force.

[0066] For example, the shaft of the rotating rod 41 is machined with a through hole, and the outer ring of the deep groove ball bearing is press-fitted into the through hole. The connecting shaft section of the pressure head 43 is press-fitted into the inner ring of the deep groove ball bearing. The pressure head 43 can rotate freely around its own axis, and the axial pressure is transmitted to the rotating rod 41 through the bearing.

[0067] In this implementation, the second hydraulic cylinder 42 is used to drive the rotating rod 41 to rotate so as to drive the pressure head 43 to press the local extrusion template 111, and transmit power to the local extrusion template 111 to maintain the pressure stability during the pressure replenishment process.

[0068] For example, after the position adjustment assembly 3 moves the slider 32 into place, the piston rod of the second hydraulic cylinder 42 extends, pushing the rotating rod 41 to rotate downward around its hinge axis at the first end. The pressure head 43 follows the rotating rod 41 downward, and after contacting the top surface of the partial extrusion template 111, it outputs extrusion pressure. After the pressure is replenished, the piston rod of the second hydraulic cylinder 42 retracts, pulling the rotating rod 41 to rotate upward around its hinge axis at the first end, causing the pressure head 43 to move upward away from the partial extrusion template 111, completing one work cycle.

[0069] In this implementation, the second hydraulic cylinder drives the rotating rod to rotate, causing the pressure head to move toward the local extrusion template and apply pressure. This allows for precise pressure replenishment of local areas prone to insufficient filling during the die-casting process of automotive irregular-shaped parts, effectively reducing defects such as shrinkage cavities and porosity in automotive irregular-shaped parts and improving the forming quality of the parts. The first hydraulic cylinder drives the sliding component to slide along the gantry bracket, which can move the pressure plate assembly to the position above the corresponding local extrusion template. This allows for flexible adaptation to the extrusion requirements of different arrangements of local extrusion templates, eliminating the need to readjust the equipment structure for the die-casting molds of different automotive irregular-shaped parts, thus significantly improving adaptability.

[0070] With this implementation, multiple local extrusion templates slide vertically along the guide columns. In conjunction with the movable extrusion structure of the pressure plate assembly, multiple local areas can be extruded sequentially at the same time. This eliminates the need for additional independent extrusion devices, simplifies the overall structure of the equipment, shortens the die-casting processing cycle of irregularly shaped automotive parts, and improves production efficiency.

[0071] Figure 2 A schematic diagram of the control structure of a first type of die-casting equipment for irregularly shaped automotive parts provided in this application embodiment is shown below. Figure 2 As shown in the embodiments of this application, another die-casting equipment for irregularly shaped automotive parts is also provided, which will be described in detail below.

[0072] In some implementations, a rotary encoder 51, an injection unit 52, and a die-casting control unit 5 are also included. The rotary encoder 51 is mounted on the shaft of the rotating rod 41 and is used to detect the rotation angle of the rotating rod 41. The injection unit 52 is used to inject molten metal between the upper template 11 and the lower template 12. The die-casting control unit 5 is electrically connected to the rotary encoder 51 and the injection unit 52, respectively.

[0073] In this implementation, a rotary encoder 51, an injection unit 52, and a die-casting control unit 5 are also provided. The three work together to achieve automated closed-loop control of the die-casting operation.

[0074] In this implementation, the rotary encoder 51 is mounted on the rotating shaft of the rotating rod 41 to detect the rotation angle of the rotating rod 41 and convert the rotation angle into an electrical signal output.

[0075] For example, an incremental rotary encoder can be selected. When the rotating rod 41 rotates, the encoder outputs a pulse signal. The rotation angle is calculated by the number of pulses to meet the requirement of continuous detection of the rotation angle.

[0076] For example, the hinge shaft at the first end of the rotating rod 41 serves as the rotating shaft of the rotating rod 41. The rotary encoder 51 is fixed to the side wall of the sliding member 32 by a mounting bracket. The input shaft of the encoder is coaxially connected to the exposed end of the hinge shaft by an elastic coupling. When the rotating rod 41 rotates, it drives the encoder input shaft to rotate synchronously.

[0077] It should be noted that the rotary encoder 51 and the die-casting control unit 5 can be electrically connected through shielded signal cables, which can reduce external electromagnetic interference during signal transmission.

[0078] For example, the signal output end of the rotary encoder 51 is connected to the core wire of the shielded four-core cable, and the other end of the shielded four-core cable is connected to the signal acquisition interface of the die-casting control unit 5. The two ends of the outer shielding mesh of the cable are grounded to complete the electrical connection.

[0079] It should be noted that when the rotary encoder 51 detects the rotation angle of the rotating rod 41, it rotates synchronously with the rotating rod 41 and converts the rotation angle into a corresponding electrical signal, which is then output to the die-casting control unit 5.

[0080] For example, when the rotating rod 41 rotates around the hinge shaft, it drives the input shaft of the rotary encoder 51 to rotate synchronously through the coupling. The rotary encoder 51 converts the rotation angle of the input shaft into a corresponding voltage or pulse signal output. It outputs a corresponding number of pulses for each rotation angle. The signal is transmitted to the die-casting control unit 5 to obtain the real-time rotation angle of the rotating rod 41.

[0081] In this implementation, the injection unit 52 is used to inject liquid metal between the upper template 11 and the lower template 12, injecting the molten metal into the cavity after mold closing to complete the casting.

[0082] For example, the injection unit 52 includes a heat-insulating furnace, a pressure chamber, an injection punch, and an injection cylinder. The heat-insulating furnace stores molten metal, the pressure chamber receives the molten metal, and the injection cylinder pushes the injection punch to move within the pressure chamber, injecting the molten metal into the cavity between the upper mold plate 11 and the lower mold plate 12.

[0083] For example, the injection cylinder of the injection unit 52 is connected to the solenoid directional valve. The control coil of the solenoid directional valve is connected to the control output interface of the die-casting control unit 5 through the power control cable. The control signal output by the die-casting control unit 5 is transmitted to the solenoid directional valve through the cable to control the action of the injection cylinder.

[0084] For example, after the upper mold plate 11 and the lower mold plate 12 are closed, the molten metal liquid is injected into the pressure chamber. The injection cylinder of the injection unit 52 pushes the injection punch to move along the pressure chamber towards the cavity, and pushes the molten metal liquid in the pressure chamber into the cavity formed by the upper mold plate 11 and the lower mold plate 12 through the gate to complete the injection.

[0085] In this implementation, the die-casting control unit 5 is electrically connected to the rotary encoder 51 and the injection unit 52 respectively, receives the angle signal from the rotary encoder 51, and outputs a signal to control the operation of the injection unit 52.

[0086] It should be noted that the die-casting control unit 5 can be a PLC programmable logic controller or a dedicated industrial control microcontroller to meet the logic control requirements of the die-casting operation.

[0087] For example, after the position adjustment component 3 moves the sliding member 32 into position, the second oil cylinder 42 drives the rotating rod 41 to rotate and press down. The rotary encoder 51 detects the rotation angle of the rotating rod 41 in real time and transmits the signal to the die casting control unit 5. When the rotation angle reaches the preset position angle value, the die casting control unit 5 outputs a control signal to control the injection unit 52 to start, injecting liquid metal between the upper template 11 and the lower template 12. After the injection is completed, the control state is maintained until the pressure replenishment is completed.

[0088] In some implementations, the die-casting control unit 5 is used to acquire the injection pressure value of the injection unit 52, the preset angle detection value corresponding to the injection pressure value, and the real-time angle detection value of the rotary encoder 51. The die-casting control unit 5 is also used to determine the difference between the preset angle detection value and the real-time angle detection value as the real-time angle deviation value.

[0089] In this implementation, the die-casting control unit 5 is used to obtain the injection pressure value of the injection unit 52, the preset angle detection value corresponding to the injection pressure value, and the real-time angle detection value of the rotary encoder 51, so as to provide a data basis for subsequent deviation calculation.

[0090] For example, a piezoelectric pressure sensor is installed at the oil inlet of the injection cylinder of the injection unit 52. The signal output end of the pressure sensor is connected to the analog acquisition interface of the die-casting control unit 5 through a shielded cable. The pressure sensor converts the injection pressure into an analog voltage signal output. After the die-casting control unit 5 acquires the signal, it converts it into the corresponding injection pressure value to complete the acquisition process.

[0091] For example, different injection pressures correspond to preset rotation rod 41 positioning angles. The corresponding relationship table is pre-stored in the storage area of ​​the die-casting control unit 5. When the die-casting control unit 5 obtains the current injection pressure value, it retrieves the preset angle detection value corresponding to the injection pressure value from the corresponding relationship table in the storage area to complete the acquisition process.

[0092] For example, the rotary encoder 51 outputs a corresponding number of pulse signals for each unit angle of rotation. The pulse signals are transmitted to the high-speed counting interface of the die-casting control unit 5. The die-casting control unit 5 counts the input pulses and, combined with the initial zero angle, calculates the real-time rotation angle of the rotating rod 41, i.e., the real-time angle detection value, thus completing the acquisition process.

[0093] In this implementation, the die-casting control unit 5 is also used to determine the difference between the preset angle detection value and the real-time angle detection value, and use the difference as the real-time angle deviation value for subsequent control judgment.

[0094] For example, the die-casting control unit 5 obtains a preset angle detection value of 15 degrees and obtains a real-time angle detection value of 14.2 degrees output by the rotary encoder 51. Subtracting 14.2 degrees from 15 degrees yields a difference of 0.8 degrees. This difference is determined as the real-time angle deviation value, thus completing the calculation process.

[0095] In some implementations, the die-casting control unit 5 is also used to obtain a preset angle deviation value. When the real-time angle deviation value is greater than or equal to the preset angle deviation value, the die-casting control unit 5 controls the injection unit 52 to stop injecting molten metal between the upper template 11 and the lower template 12.

[0096] In this implementation, the die-casting control unit 5 is also used to obtain a preset angle deviation value. The preset angle deviation value is a threshold parameter for determining whether the rotating rod 41 is in position, and is used for subsequent logical judgment.

[0097] For example, for the current casting specifications, the corresponding maximum allowable angular deviation value of 0.5 degrees is pre-stored in the non-volatile storage area of ​​the die-casting control unit 5. During operation, the die-casting control unit 5 directly retrieves the value from the storage area to complete the process of obtaining the preset angular deviation value.

[0098] In this implementation, when the real-time angle deviation value is greater than or equal to the preset angle deviation value, the die-casting control unit 5 controls the injection unit 52 to stop injecting molten metal between the upper template 11 and the lower template 12, so as to avoid casting defects caused by injection when the pressure is insufficient.

[0099] For example, the die-casting control unit 5 calculates a real-time angle deviation value of 0.8 degrees and retrieves a preset angle deviation value of 0.5 degrees. The logic operation unit compares the two values ​​and determines that the real-time angle deviation value is greater than the preset angle deviation value, and outputs a judgment result that meets the stopping condition.

[0100] It should be noted that when the stop conditions are met, the die-casting control unit 5 can output a signal to disconnect the power control circuit of the injection unit 52, or switch the position of the reversing valve to stop the injection unit 52 from operating.

[0101] For example, an electromagnetic reversing valve is connected to the oil supply circuit of the injection cylinder of the injection unit 52. The control end of the electromagnetic reversing valve is electrically connected to the die-casting control unit 5. When the stop condition is met, the die-casting control unit 5 outputs a control signal to cut off the power supply to the electromagnetic reversing valve, or controls the electromagnetic reversing valve to switch to the neutral position, so that the injection cylinder stops pushing the injection punch to move, and the injection unit 52 stops injecting molten metal.

[0102] Through this implementation, the rotary encoder collects the rotation angle of the rotating rod in real time to generate a real-time angle detection value. The die-casting control unit compares this value with the preset angle detection value corresponding to the injection pressure value to obtain the real-time angle deviation value. This allows for accurate detection of the extrusion state deviation of the pressure head, effectively improving the state monitoring accuracy of the extrusion process. The die-casting control unit associates the injection pressure value of the injection unit with the corresponding angle parameter of the rotating rod, enabling state linkage matching between the injection process and the local extrusion process. This avoids part forming defects caused by the incoordination of the two processes, ensuring the forming consistency of irregularly shaped automotive parts.

[0103] With this implementation, when the real-time angle deviation value is greater than or equal to the preset angle deviation value, the die-casting control unit immediately controls the injection unit to stop injecting molten metal between the upper and lower mold plates. This can terminate the feeding in time when the extrusion structure is abnormal, reduce the loss of unqualified raw materials, and reduce the subsequent cleaning costs of the fault.

[0104] like Figure 2 As shown in the embodiments of this application, another die-casting equipment for irregularly shaped automotive parts is also provided, which will be described in detail below.

[0105] In some implementations, the first cylinder 31 is controlled by the first proportional hydraulic valve 311 to reach its first extended position, and the second cylinder 42 is controlled by the second proportional hydraulic valve 421 to reach its second extended position. The die-casting control unit 5 is electrically connected to the first proportional hydraulic valve 311 and the second proportional hydraulic valve 421 respectively, so as to control the first cylinder 31 and the second cylinder 42 to adapt to the extrusion of the local extrusion template 111 of different shapes.

[0106] In this implementation, the first cylinder 31 controls the first extension position of the first cylinder 31 through the first proportional hydraulic valve 311, and adjusts the stopping position of the sliding member 32 on the gantry bracket 2 to adapt to different operating requirements.

[0107] It should be noted that the first proportional hydraulic valve 311 is connected to the oil inlet and return lines of the first cylinder 31. By controlling the flow rate of hydraulic oil to the two chambers of the first cylinder 31, the extension position of the piston rod of the first cylinder 31 is controlled.

[0108] For example, the output oil circuit of the hydraulic pump station is connected to the oil inlet of the first proportional hydraulic valve 311, the two working oil ports of the first proportional hydraulic valve 311 are connected to the rodless chamber and the rod chamber of the first cylinder 31 through hydraulic oil pipes respectively, and the return oil port of the first proportional hydraulic valve 311 is connected to the hydraulic oil tank to complete the connection and cooperation.

[0109] It should be noted that when the first proportional hydraulic valve 311 controls the first oil cylinder 31 to adjust the first extension position, the die-casting control unit 5 outputs a corresponding control signal. The first proportional hydraulic valve 311 adjusts the valve core opening, controls the hydraulic oil flow, and drives the piston rod of the first oil cylinder 31 to extend to the corresponding position and then stops.

[0110] For example, the die-casting control unit 5 outputs a control voltage signal corresponding to the target extension position. The proportional electromagnet of the first proportional hydraulic valve 311 pushes the valve core to the corresponding opening degree. Hydraulic oil enters the rodless chamber of the first cylinder 31 and pushes the piston rod to extend. When the extension is in place, the control signal is maintained, the valve core remains open, and the first cylinder 31 remains in the first extension position.

[0111] In this implementation, the second cylinder 42 controls the second extension position of the second cylinder 42 through the second proportional hydraulic valve 421, and adjusts the rotation angle of the rotating rod 41 to adapt to the extrusion requirements of the local extrusion template 111 of different heights.

[0112] For example, the output oil circuit of the hydraulic pump station is connected to the oil inlet of the second proportional hydraulic valve 421. The two working oil ports of the second proportional hydraulic valve 421 are connected to the rodless chamber and the rod chamber of the second cylinder 42 through hydraulic oil pipes, respectively. The return oil port of the second proportional hydraulic valve 421 is connected to the hydraulic oil tank to complete the connection and cooperation.

[0113] It should be noted that when the second proportional hydraulic valve 421 controls the second cylinder 42 to adjust the second extension position, the die-casting control unit 5 outputs a corresponding control signal. The second proportional hydraulic valve 421 adjusts the valve core opening, controls the hydraulic oil flow, and drives the piston rod of the second cylinder 42 to extend to the corresponding position and then stops.

[0114] For example, the die-casting control unit 5 outputs a control voltage signal corresponding to the target rotation angle. The proportional electromagnet of the second proportional hydraulic valve 421 pushes the valve core to the corresponding opening degree. Hydraulic oil enters the rodless chamber of the second cylinder 42 and pushes the piston rod to extend. When the rotating rod 41 rotates to the corresponding angle, the control signal is maintained, the valve core remains open, and the second cylinder 42 remains in the second extended position.

[0115] In this implementation, the die-casting control unit 5 is electrically connected to the first proportional hydraulic valve 311 and the second proportional hydraulic valve 421 respectively, so as to control the first hydraulic cylinder 31 and the second hydraulic cylinder 42 to adapt to the extrusion of the local extrusion template 111 of different shapes through the die-casting control unit 5.

[0116] For example, after replacing the partial extrusion template 111 with one of different shapes, the die-casting control unit 5 calls the corresponding parameters of the partial extrusion template 111 of that specification and outputs a corresponding control signal to the first proportional hydraulic valve 311. The first cylinder 31 extends to the corresponding first extension position, driving the sliding member 32 to move to the corresponding lateral position. Then, it outputs a corresponding control signal to the second proportional hydraulic valve 421, and the second cylinder 42 extends to the corresponding second extension position, driving the rotating rod 41 to rotate to the corresponding angle. The pressure head 43 fits against the top surface of the partial extrusion template 111, completing the adaptation extrusion.

[0117] In this implementation, the die-casting control unit controls the first extension position of the first cylinder through the first proportional hydraulic valve, which can precisely adjust the stopping position of the sliding part on the gantry bracket to adapt to the position requirements of different arrangement of local extrusion templates and improve the position adjustment accuracy of the pressure plate assembly; the die-casting control unit controls the second extension position of the second cylinder through the second proportional hydraulic valve, which can precisely adjust the rotation amplitude of the rotating rod to adapt to the extrusion stroke requirements of local extrusion templates of different thicknesses and ensure that the extrusion force applied by the pressure head is accurate and controllable.

[0118] Through this implementation, the die-casting control unit links and controls the first and second proportional hydraulic valves, which can flexibly adjust the position of the pressure plate assembly and the extrusion parameters to adapt to the extrusion requirements of local extrusion templates of different shapes. It can adapt to the die-casting production of various specifications of automotive irregular parts without changing equipment components.

[0119] In some implementations, when the real-time angle detection value is less than the preset angle detection value, and when the real-time angle deviation value is greater than or equal to the preset angle deviation value, the die-casting control unit 5 controls the second oil cylinder 42 to increase the preset extrusion pressure within a first time period, so as to drive the rotating rod 41 to rotate downward and reduce the real-time angle deviation value.

[0120] In this implementation, when the real-time angle detection value is less than the preset angle detection value and the real-time angle deviation value is greater than or equal to the preset angle deviation value, the die-casting control unit 5 controls the second oil cylinder 42 to increase the preset extrusion pressure within the first time period, adjust the position of the rotating rod 41, and reduce the angle deviation.

[0121] For example, the die-casting control unit 5 obtains a real-time angle detection value of 14.2 degrees and a preset angle detection value of 15 degrees. The logic operation unit compares the two values ​​and determines that the real-time angle detection value is less than the preset angle detection value, and outputs the first judgment result that meets the adjustment conditions.

[0122] In this implementation, after the adjustment conditions are met, the die-casting control unit 5 adjusts the control signal output to the second proportional hydraulic valve 421 to control the second oil cylinder 42 to increase the preset extrusion pressure within the first time period.

[0123] For example, if the preset extrusion pressure is 10 MPa, after the adjustment conditions are met, the die-casting control unit 5 gradually increases the control signal output to the second proportional hydraulic valve 421, so that the oil supply pressure of the second cylinder 42 gradually increases, and the extrusion pressure increases from 10 MPa to 12 MPa in the first time period, and the extrusion pressure is maintained until the end of the first time period.

[0124] In this implementation, after the extrusion pressure increases, the second oil cylinder 42 drives the rotating rod 41 to rotate downward, which in turn drives the pressure head 43 to further press down on the local extrusion template 111, thereby reducing the real-time angle deviation value.

[0125] For example, the initial real-time angle detection value is 14.2 degrees, the preset angle detection value is 15 degrees, and the real-time angle deviation value is 0.8 degrees, which is greater than the preset angle deviation value of 0.5. After the extrusion pressure increases, the second oil cylinder 42 pushes the rotating rod 41 to continue to rotate downward, the rotation angle increases to 14.8 degrees, and the real-time angle deviation value is reduced to 0.2 degrees, which meets the deviation requirement and completes the adjustment process.

[0126] In some implementations, when the real-time angle deviation value is less than the preset angle deviation value after the first time period, the die-casting control unit 5 controls the injection unit 52 to continue injecting molten metal between the upper mold plate 11 and the lower mold plate 12. When the real-time angle deviation value is still greater than or equal to the preset angle deviation value after the first time period, the die-casting control unit 5 controls the injection unit 52 to stop injecting molten metal between the upper mold plate 11 and the lower mold plate 12.

[0127] In this implementation, when the real-time angle deviation value is less than the preset angle deviation value after the first time period, the die-casting control unit 5 controls the injection unit 52 to continue injecting molten metal between the upper template 11 and the lower template 12, and continue to advance the die-casting operation process.

[0128] For example, the first time period is preset to ten seconds. When the die-casting control unit 5 starts to control the second oil cylinder 42 to increase the extrusion pressure, the internal timer is triggered to start counting. The timer continues to accumulate running time. When the accumulated running time reaches ten seconds, it is determined that the first time period has ended and the next judgment process is entered.

[0129] It should be noted that after the first time period, the die-casting control unit 5 reacquires the real-time angle detection value output by the rotary encoder 51, recalculates the real-time angle deviation value, and then inputs the real-time angle deviation value and the preset angle deviation value into the logic operation unit to complete the size comparison.

[0130] For example, after determining that the conditions for continuing operation are met, the die casting control unit 5 maintains the output of the control signal to the electromagnetic reversing valve of the injection unit 52. The electromagnetic reversing valve maintains its original position, and the injection cylinder continues to push the injection punch forward, continuously injecting the molten metal into the cavity between the upper template 11 and the lower template 12 until the entire injection process is completed.

[0131] In this implementation, when the real-time angle deviation value is still greater than or equal to the preset angle deviation value after the first time period, the die-casting control unit 5 controls the injection unit 52 to stop injecting molten metal between the upper template 11 and the lower template 12, thus terminating the current unqualified operation process.

[0132] For example, after the first time period ends, the die-casting control unit 5 re-acquires the real-time angle deviation value as 0.7 degrees and the preset angle deviation value as 0.5 degrees. After the logic operation unit completes the comparison, it determines that the real-time angle deviation value is still greater than the preset angle deviation value and outputs the judgment result that the operation is stopped.

[0133] For example, after determining that the conditions for stopping the operation are met, the die-casting control unit 5 cuts off the control signal output to the electromagnetic reversing valve of the injection unit 52, the electromagnetic reversing valve switches to the neutral position, the injection cylinder stops pushing the injection punch to move, and the injection unit 52 stops injecting molten metal between the upper template 11 and the lower template 12, waiting for manual troubleshooting.

[0134] With this implementation, when the real-time angle detection value is less than the preset angle detection value and the real-time angle deviation value is greater than or equal to the preset angle deviation value, the die-casting control unit controls the second oil cylinder to increase the preset extrusion pressure within the first time period, driving the rotating rod downward to rotate. This can actively correct the extrusion deviation, avoid interrupting production directly due to small deviations, and reduce unnecessary downtime. After the first time period, when the real-time angle deviation value is less than the preset angle deviation value, the die-casting control unit controls the injection unit to continue injecting molten metal between the upper and lower mold plates. This can quickly restore the die-casting process, ensure the continuity of production, and shorten the overall processing time.

[0135] With this implementation method, when the real-time angle deviation value is still greater than or equal to the preset angle deviation value after the first time period, the die-casting control unit controls the injection unit to stop injecting molten metal between the upper and lower mold plates. This can stop the loss in time when the deviation cannot be corrected, avoid the production of unqualified parts, and reduce the waste of raw materials.

[0136] In some implementations, the guide post 21 is vertically connected to the slider 32, and the guide post 21 is provided with a limiting plate 211 for vertically limiting the highest position of the local extrusion template 111. The bottom of the pressure head 43 is provided with rollers to facilitate the sliding of the pressure head 43 relative to the top surface of the local extrusion template 111.

[0137] In this implementation, the guide post 21 is vertically connected to the slider 32, providing vertical sliding guidance support for the local extrusion template 111 and restricting the sliding direction of the local extrusion template 111.

[0138] For example, the plate of the slider 32 is machined with a vertical mounting through hole, and the top of the guide post 21 is machined with an external thread section. The guide post 21 passes through the mounting through hole from bottom to top, and the external thread section at the top extends out of the top surface of the slider 32. After tightening the lock nut, the guide post 21 is vertically fixed to the bottom surface of the slider 32.

[0139] In this implementation, a limiting plate 211 is provided on the guide column 21. The limiting plate 211 is used to limit the highest vertical position of the local extrusion template 111, restricting the maximum upward sliding stroke of the local extrusion template 111, thereby preventing the local extrusion template 111 from detaching from the upper template 11.

[0140] For example, the limiting plate 211 is a circular plate structure with a through hole machined in the center through the guide post 21. A radial threaded through hole is machined on the side wall of the through hole. A locking screw is installed in the threaded through hole. After the limiting plate 211 is adjusted to the preset height along the guide post 21, the locking screw is tightened. The end of the screw presses against the outer wall of the guide post 21, fixing the limiting plate 211 on the guide post 21.

[0141] It should be noted that a sealing skirt is provided between the local extrusion template 111 and the upper template 11 and lower template 12, which can seal the space between the upper template 11 and the lower template 12 to prevent leakage of molten metal.

[0142] It should be noted that when the limiting plate 211 limits the local extrusion template 111 to the highest position, after the local extrusion template 111 slides upward along the guide post 21 to the highest position, its top surface and the bottom surface of the limiting plate 211 are in contact, and the limiting plate 211 prevents the local extrusion template 111 from continuing to slide upward, thus completing the limiting.

[0143] In this implementation, a roller is provided at the bottom of the pressure head 43. The roller can reduce the friction when the pressure head 43 moves relative to the top surface of the local extrusion template 111, making it easier for the pressure head 43 to slide relative to the top surface of the local extrusion template 111.

[0144] It should be noted that the roller at the bottom of the pressure head 43 can be a cylindrical roller structure, which is rotatably connected to the bottom of the pressure head 43 by a pin. The lowest point of the roller protrudes from the bottom surface of the pressure head 43 and directly contacts the top surface of the local extrusion template 111.

[0145] It should be noted that when the pressure head 43 is working, the rotating rod 41 drives the pressure head 41 to swing and adjust its position, and the roller rolls along the top surface of the local extrusion template 111 to reduce the friction during the sliding process.

[0146] With this implementation, the limiting plate is set on the guide column to limit the vertical maximum position of the local extrusion template, which can prevent the local extrusion template from exceeding the stroke range when it rebounds under the extrusion pressure, prevent the parts from being misaligned and falling off, and improve the stability and safety of the equipment operation.

[0147] With this implementation, the bottom of the pressure head is equipped with rollers, which allow the pressure head to slide relative to the top surface of the local extrusion template during extrusion. This reduces the sliding friction between the pressure head and the local extrusion template, reduces the wear of components, and extends the service life of related components.

[0148] In some implementations, there are at least two gantry supports 2, each gantry support 2 is provided with two pressure plate assemblies 4, each pressure plate assembly 4 has a sliding member 32 provided with multiple guide posts 21, each guide post 21 corresponding to each pressure plate assembly 4 has a limit plate 211 provided with a pressure sensor 212, and the die-casting control unit 5 is electrically connected to the pressure sensors 212 corresponding to the two pressure plate assemblies 4.

[0149] In this implementation, there are at least two gantry supports 2, and each gantry support 2 is equipped with two pressure plate assemblies 4 to meet the simultaneous extrusion operation requirements of multiple local extrusion templates 111 of large-size die-casting molds.

[0150] In this implementation, each pressure plate assembly 4 has multiple guide posts 21 on its sliding member 32, and each guide post 21 is matched with a local extrusion template 111 to complete the vertical sliding guidance.

[0151] It should be noted that multiple guide posts 21 can be arranged in a rectangular array on the bottom surface of the slider 32 according to the arrangement position of the local extrusion template 111, and each guide post 21 is correspondingly inserted into the guide hole of a local extrusion template 111.

[0152] For example, four vertical mounting through holes are machined on the bottom surface of the sliding member 32. The four mounting through holes are arranged in a rectangular array of two rows and two columns. A guide post 21 is vertically fixed in each mounting through hole. The four guide posts 21 correspond to four local extrusion templates 111 to be extruded, thus completing the arrangement and connection.

[0153] In this implementation, a pressure sensor 212 is provided on the limiting plate 211 of each guide post 21 corresponding to each pressure plate assembly 4. The pressure sensor 212 is used to detect the extrusion pressure of the local extrusion template 111 on the limiting plate 211.

[0154] It should be noted that the pressure sensor 212 can be a spoke-type piezoelectric pressure sensor. This type of sensor is small in size and has a strong load-bearing capacity, making it suitable for installation on the limit plate 211 to detect the extrusion pressure.

[0155] It should be noted that the pressure sensor 212 can be fixedly installed on the bottom surface of the limiting plate 211 by bolts, with the detection surface protruding from the bottom surface of the limiting plate 211 and directly contacting the top surface of the local extrusion template 111 to complete the pressure detection.

[0156] For example, the bottom surface of the limiting plate 211 is machined with a mounting groove that matches the shape of the pressure sensor 212. The pressure sensor 212 is placed in the mounting groove, and the flange of the sensor is fixed to the limiting plate 211 by countersunk bolts. The detection surface of the sensor protrudes from the bottom surface of the limiting plate 211, thus completing the installation.

[0157] It should be noted that when the pressure sensor 212 detects the extrusion pressure of the local extrusion template 111, the local extrusion template 111 presses upward to contact the detection surface of the pressure sensor 212, and the pressure sensor 212 converts the extrusion pressure into a corresponding electrical signal output to complete the detection.

[0158] In this implementation, the die-casting control unit 5 and all pressure sensors 212 corresponding to the two pressure plate assemblies 4 are electrically connected, and the detection signal output by each pressure sensor 212 is collected to obtain the extrusion pressure data at each position.

[0159] It should be noted that the die-casting control unit 5 reads the electrical signal output by each pressure sensor 212 one by one, converts the electrical signal into the corresponding pressure value, and completes the acquisition of the detection signal of each sensor.

[0160] In some implementations, the die-casting control unit 5 is also used to determine the first average pressure value and the first pressure variance value of the pressure sensors 212 on the plurality of guide posts 21 corresponding to each pressure plate assembly 4.

[0161] In this implementation, the die-casting control unit 5 is also used to determine the first average pressure value and the first pressure variance value of the pressure sensors 212 on the multiple guide columns 21 corresponding to each pressure plate assembly 4, and to determine whether the current extrusion state of the multiple local extrusion templates 111 is normal by statistical values.

[0162] It should be noted that when the die-casting control unit 5 calculates the first average pressure value, it adds up the detected pressure values ​​of all pressure sensors 212 corresponding to the same pressure plate assembly 4, and then divides it by the number of pressure sensors 212 in that group. The result is the first average pressure value.

[0163] It should be noted that when the die-casting control unit 5 calculates the first pressure variance value, it first calculates the square of the difference between each detected pressure value and the first pressure mean value, then adds all the square values ​​together, divides by the number of pressure sensors 212, and the result is the first pressure variance value.

[0164] For example, the average first pressure is 10 MPa. The squared differences between the four detected pressure values ​​and the average are 0, 0.04, 0.04 and 0, respectively. They are added together to get 0.08. Dividing by the number four, we get a first pressure variance value of 0.02, thus completing the calculation process.

[0165] In some implementations, when the average first pressure of the multiple pressure plate assemblies 4 is greater than or equal to a preset average first pressure and the variance of the first pressure is less than a preset variance of the first pressure, the die-casting control unit 5 is further configured to determine the variance of the multiple average first pressures corresponding to the multiple pressure plate assemblies 4, as a second variance of the pressure. The die-casting control unit 5 is further configured to control the second cylinders 42 of the multiple pressure plate assemblies 4 to start operating and extruding the multiple local extrusion templates 111 when the second variance of the pressure is less than a preset second variance of the pressure.

[0166] In this implementation, when the average first pressure value of multiple pressure plate assemblies 4 is greater than or equal to the preset average first pressure value and the first pressure variance value is less than the preset first pressure variance value, the die-casting control unit 5 is further used to determine the variance value of multiple average first pressure values ​​corresponding to multiple pressure plate assemblies 4, and use the variance value as the second pressure variance value to determine the pressure uniformity between different pressure plate assemblies 4.

[0167] It should be noted that when the die-casting control unit 5 compares the first average pressure value of multiple pressure plate assemblies 4 with the preset first average pressure value, it takes out the first average pressure value of each pressure plate assembly 4 one by one and compares it with the preset first average pressure value stored in advance. After all conditions are met, it proceeds to the next step of judgment.

[0168] For example, there are currently two pressure plate assemblies 4, with first pressure average values ​​of 10 MPa and 10.1 MPa respectively. The preset first pressure average value is 9 MPa. The die-casting control unit 5 compares the two first pressure average values ​​in turn and determines that both first pressure average values ​​are greater than the preset first pressure average value, thus satisfying the first judgment condition.

[0169] It should be noted that when the die-casting control unit 5 compares the first pressure variance value of multiple pressure plate components 4 with the preset first pressure variance value, it takes out the first pressure variance value of each pressure plate component 4 one by one and compares it with the preset first pressure variance value stored in advance. After all conditions are met, it proceeds to the next step of calculation.

[0170] For example, the first pressure variance values ​​of the two pressure plate assemblies 4 are 0.02 and 0.015 respectively, and the preset first pressure variance value is 0.05. The die-casting control unit 5 compares the two first pressure variance values ​​in turn and determines that both first pressure variance values ​​are less than the preset first pressure variance value, thus satisfying the second judgment condition.

[0171] It should be noted that when the die-casting control unit 5 calculates the second pressure variance value, it first calculates the square of the difference between the first pressure mean value of each pressure plate assembly 4 and the average value of all first pressure mean values, then adds all the squared values ​​together and divides them by the number of pressure plate assemblies 4. The result is the second pressure variance value.

[0172] For example, the average first pressure values ​​of the two pressure plate assemblies 4 are 10 MPa and 10.1 MPa, respectively. The average of all the average first pressure values ​​is 10.05 MPa. The squares of the two differences are 0.0025 and 0.0025, respectively. They are added together to get 0.005. Dividing by the quantity two, we get the second pressure variance value of 0.0025, thus completing the calculation process.

[0173] In this implementation, the die-casting control unit 5 is also used to control the second cylinder 42 of the multiple pressure plate assemblies 4 to start running and extrude multiple local extrusion templates 111 when the second pressure variance value is less than the preset second pressure variance value, and start the formal extrusion operation after confirming that the pressure uniformity is qualified.

[0174] For example, if the calculated second pressure variance value is 0.0025 and the preset second pressure variance value is 0.01, after the logic operation unit completes the comparison, it determines that the second pressure variance value is less than the preset second pressure variance value, thus meeting the conditions for starting the operation.

[0175] It should be noted that after the start-up conditions are met, the die-casting control unit 5 outputs a control signal to the second proportional hydraulic valve 421 corresponding to each pressure plate assembly 4, controls the second oil cylinder 42 to extend, drives the rotating rod 41 to rotate, and drives the pressure head 43 to squeeze the corresponding local extrusion template 111.

[0176] For example, after determining that the start-up conditions are met, the die-casting control unit 5 outputs corresponding control signals to the second proportional hydraulic valves 421 of the two pressure plate assemblies 4 respectively. The second proportional hydraulic valves 421 open to the corresponding opening degree, and hydraulic oil enters the rodless chamber of the second cylinder 42. The piston rod of the second cylinder 42 extends out, drives the rotating rod 41 to rotate downward, and drives the pressure head 43 to press down on the corresponding local extrusion template 111, thus starting the formal extrusion operation.

[0177] In this implementation, the pressure sensor on the limit plate corresponding to each pressure plate assembly collects pressure data. The die-casting control unit calculates the first average pressure value and the first variance value of the pressure sensors of multiple guide pillars. This can accurately determine the uniformity of force on the local extrusion template under a single pressure plate assembly, avoiding extrusion failure caused by uneven force on one side. Only when the first average pressure value of multiple pressure plate assemblies is greater than or equal to the preset first average pressure value and the first variance value is less than the preset first variance value, is the overall pressure parameter further verified. This can eliminate abnormal installation or force on a single pressure plate assembly in advance, reducing the probability of producing defective parts.

[0178] Through this implementation, the die-casting control unit calculates the second pressure variance value of multiple first pressure averages. When the second pressure variance value is less than the preset second pressure variance value, it controls multiple second oil cylinders to operate synchronously, which can ensure the consistency of extrusion force of multiple sets of pressure plate assemblies and improve the molding uniformity of various local areas of automotive irregular parts.

[0179] In some implementations, the die-casting control unit 5 is also used to control the injection unit 52 to continue injecting liquid metal between the upper template 11 and the lower template 12 when the first average pressure value is less than the preset first average pressure value, or the first pressure variance value is greater than or equal to the preset first pressure variance value.

[0180] In this implementation, when the average first pressure is less than the preset average first pressure, or the variance of the first pressure is greater than or equal to the preset variance of the first pressure, the die-casting control unit 5 controls the injection unit 52 to continue injecting molten metal between the upper mold plate 11 and the lower mold plate 12, maintaining the original die-casting operation process.

[0181] It should be noted that when the die-casting control unit 5 makes a judgment, it compares the first average pressure value and the first variance value of each pressure plate assembly 4 one by one. As long as any pressure plate assembly 4 meets one of the conditions, the control logic for continuing injection is triggered.

[0182] For example, there are currently two pressure plate assemblies 4. The first pressure plate assembly 4 has a first average pressure of 10 MPa, which is greater than a preset first average pressure of 9 MPa. The first pressure variance is 0.06, which is greater than a preset first pressure variance of 0.05. As long as one of the conditions is met, the control logic for continuing injection is triggered.

[0183] In this implementation, after the triggering condition is met, the die-casting control unit 5 maintains the original control state of the injection unit 52 and does not change the action of the injection unit 52, allowing the injection unit 52 to continue to complete the injection operation.

[0184] With this implementation, when the average first pressure is less than the preset average first pressure, or the variance of the first pressure is greater than or equal to the preset variance of the first pressure, the die-casting control unit controls the injection unit to continue injecting molten metal between the upper and lower mold plates. This can maintain the feeding process when the local extrusion mold does not reach the preset stress state, avoid unnecessary production interruptions, and ensure the stability of the processing rhythm.

[0185] In some implementations, when the average first pressure of the multiple pressure plate assemblies 4 is greater than or equal to a preset average first pressure and the first pressure variance is less than a preset first pressure variance, the die-casting control unit 5 is also used to determine the variance of the multiple average first pressures corresponding to the multiple pressure plate assemblies 4 as the second pressure variance.

[0186] In this implementation, when the average first pressure of multiple pressure plate assemblies 4 is greater than or equal to the preset average first pressure and the first pressure variance is less than the preset first pressure variance, the die-casting control unit 5 is further used to determine the variance of multiple average first pressures corresponding to multiple pressure plate assemblies 4, and use the variance as the second pressure variance to determine the pressure uniformity between different pressure plate assemblies 4.

[0187] For example, there are currently two pressure plate assemblies 4. The preset first pressure average value is 9 MPa and the preset first pressure variance value is 0.05. The first pressure average value of the first pressure plate assembly 4 is 10 MPa and the first pressure variance value is 0.02. The first pressure average value of the second pressure plate assembly 4 is 10.1 MPa and the first pressure variance value is 0.015. Both pressure plate assemblies 4 meet the conditions, and proceed to the next step of calculation.

[0188] In this implementation, after determining that the judgment conditions are met, the die-casting control unit 5 extracts the first average pressure value corresponding to each pressure plate assembly 4 from the grouped buffer area, providing a data basis for calculating the second pressure variance value.

[0189] It should be noted that when calculating the second pressure variance value, first calculate the average of all the first pressure averages, then calculate the sum of squares of the difference between each first pressure average and the average, and divide the sum of squares by the number of pressure plate assemblies 4 to obtain the second pressure variance value.

[0190] In some implementations, when the second pressure variance value is greater than or equal to a preset second pressure variance value, a first duration for which the second pressure variance value is greater than or equal to the preset second pressure variance value is determined. When the first duration is greater than or equal to a preset first duration, the die-casting control unit 5 issues a prompt message to prompt the correction of the position of the local extrusion template 111.

[0191] In this implementation, when the second pressure variance value is greater than or equal to the preset second pressure variance value, a first duration for which the second pressure variance value is greater than or equal to the preset second pressure variance value is determined, providing a time basis for subsequent judgment.

[0192] It should be noted that when the die-casting control unit 5 calculates the first duration, it starts the internal timer to accumulate the running time when the trigger condition is met. The timer stops when the second pressure variance value falls back to less than the preset second pressure variance value. The accumulated time is the first duration.

[0193] For example, when the second pressure variance value is determined to be greater than the preset second pressure variance value, the internal timer starts accumulating time from zero. If the second pressure variance value is always greater than the preset second pressure variance value for ten consecutive seconds, the first duration is accumulated to ten seconds, and the statistical process is completed.

[0194] In this implementation, when the first duration is greater than or equal to the preset first duration, the die-casting control unit 5 issues a prompt message to remind the operator to correct the position of the local extrusion template 111 and to check and adjust the equipment status.

[0195] For example, the first duration is statistically determined to be 10 seconds, and the preset first duration is 8 seconds. After the logic operation unit completes the comparison, it determines that the first duration is greater than the preset first duration, thus meeting the condition for issuing a prompt message.

[0196] With this implementation, when the second pressure variance value is greater than or equal to the preset second pressure variance value, the first duration of this state is first counted. Subsequent actions are triggered only when the first duration is greater than or equal to the preset first duration. This can eliminate misjudgments caused by instantaneous pressure fluctuations and improve the accuracy of anomaly judgment. After the first duration is met, the die-casting control unit issues a prompt message to correct the position of the local extrusion template. This can promptly inform the staff of the position deviation of the local extrusion template and avoid the production of batches of defective products due to the equipment operating with defects.

[0197] This implementation method uses the pressure consistency of multiple pressure plate components as the basis for anomaly judgment, which can accurately locate the collaborative anomalies of multi-station extrusion, eliminating the need for manual inspection of the status of each pressure plate component, shortening the time for anomaly investigation and reducing maintenance costs.

[0198] In some implementations, the die-casting control unit 5 is also used to obtain the pressure compensation priority corresponding to multiple pressure plate assemblies 4.

[0199] In this implementation, the die-casting control unit 5 is also used to obtain the pressure compensation priority corresponding to multiple pressure plate assemblies 4, so as to provide a sequential basis for adjusting the extrusion pressure of different pressure plate assemblies 4 in sequence. The pressure compensation priority is preset according to the importance of the corresponding local extrusion template 111.

[0200] For example, for the casting currently being processed, the priority of the pressure plate assembly 4 corresponding to the core position of the thick wall of the casting is set to level one, and the priority of the pressure plate assembly 4 corresponding to the secondary position is set to level two. This correspondence is stored in the storage area of ​​the die casting control unit 5 in advance. During operation, the die casting control unit 5 directly retrieves the correspondence from the storage area to complete the process of obtaining the pressure compensation priority of multiple pressure plate assemblies 4.

[0201] In some implementations, the die-casting control unit 5 is also used to control the second cylinder 42 of the first pressure plate assembly to start running and extrude the local extrusion template 111 corresponding to the first pressure plate assembly according to the pressure compensation priority of multiple pressure plate assemblies 4. When the first average pressure value of the first pressure plate assembly corresponding to the highest pressure compensation priority is greater than or equal to the preset first average pressure value and the first pressure variance value is less than the preset first pressure variance value, the die-casting control unit 5 controls the second cylinder 42 of the first pressure plate assembly to start running and extrude the local extrusion template 111 corresponding to the first pressure plate assembly.

[0202] In this implementation, the die-casting control unit 5 is also used to determine the pressure status of the corresponding pressure plate assembly in sequence according to the pressure compensation priority of the multiple pressure plate assemblies 4, and start the extrusion operation of the corresponding pressure plate assembly after the condition is met, so as to ensure that the extrusion pressure of the high priority position is qualified.

[0203] It should be noted that when the die-casting control unit 5 sorts multiple pressure plate components according to the pressure compensation priority, it sorts the multiple pressure plate components in descending order of priority based on the obtained priority value. The smaller the priority value, the higher the priority.

[0204] For example, there are currently three pressure plate components 4 with priorities of level 1, level 2, and level 3, respectively, with corresponding priority values ​​of 1, 2, and 3. After sorting, the first pressure plate component is the first pressure plate component corresponding to level 1, followed by the second pressure plate component corresponding to level 2, and finally the third pressure plate component corresponding to level 3, thus completing the sorting process.

[0205] In this implementation, after sorting, the die-casting control unit 5 first determines the first pressure plate assembly corresponding to the highest pressure compensation priority. Only when the first average pressure of the first pressure plate assembly is greater than or equal to the preset first average pressure and the first pressure variance is less than the preset first pressure variance will the extrusion operation of the first pressure plate assembly be started.

[0206] It should be noted that the die-casting control unit 5 first extracts the first average pressure value and the first variance value of the first pressure plate assembly, and compares them with the preset first average pressure value and the preset first variance value respectively. The start-up is triggered only when both conditions are met.

[0207] For example, the average first pressure of the first pressure plate assembly is 10 MPa, and the preset average first pressure is 9 MPa. It is determined that the average first pressure is greater than the preset average first pressure. The variance of the first pressure is 0.02, and the preset variance of the first pressure is 0.05. It is determined that the variance of the first pressure is less than the preset variance of the first pressure. When both conditions are met simultaneously, the extrusion of the first pressure plate assembly is triggered.

[0208] In this implementation, after the judgment condition is met, the die-casting control unit 5 controls the second oil cylinder 42 of the first pressure plate assembly to start running and extrude the local extrusion template 111 corresponding to the first pressure plate assembly.

[0209] It should be noted that the die-casting control unit 5 outputs a corresponding control signal to the second proportional hydraulic valve 421 corresponding to the first pressure plate assembly. The second proportional hydraulic valve 421 adjusts the valve core opening and delivers hydraulic oil of a corresponding flow rate to the second oil cylinder 42, driving the piston rod of the second oil cylinder 42 to extend.

[0210] For example, after the conditions are met, the die-casting control unit 5 outputs a control signal corresponding to the target extrusion force to the second proportional hydraulic valve 421. The second proportional hydraulic valve 421 opens to the corresponding opening degree, and hydraulic oil enters the rodless chamber of the second cylinder 42. The piston rod of the second cylinder 42 extends and pushes the rotating rod 41 to rotate downward, driving the pressure head 43 to press downward to the local extrusion template 111 corresponding to the first pressure plate assembly, thus starting the extrusion operation.

[0211] Through this implementation, the die-casting control unit pre-obtains the pressure compensation priorities corresponding to multiple pressure plate assemblies, and determines the extrusion start conditions according to the priority order. This can prioritize the extrusion operation of key forming areas of automotive irregular parts, thereby improving the forming quality of key parts. When the first average pressure value of the first pressure plate assembly corresponding to the highest pressure compensation priority is greater than or equal to the preset first average pressure value and the first pressure variance value is less than the preset first pressure variance value, the second cylinder of the first pressure plate assembly is immediately controlled to run and extrude the corresponding local extrusion template without waiting for all station verifications to be completed, thus improving the response efficiency of the extrusion process.

[0212] This implementation method allows for flexible adjustment of the pressure compensation priority of the pressure plate assembly according to the forming requirements of different automotive irregular parts, adapting to the differentiated extrusion requirements of different parts, and further improving the equipment's adaptability to the processing of multiple types of automotive irregular parts.

[0213] Figure 3 This is a flowchart illustrating a die-casting state detection method provided in an embodiment of this application, as shown below. Figure 3 As shown in the embodiment of this application, a die casting state detection method is also provided. The method includes steps S110 to S120, which are described in detail below.

[0214] S110, the die-casting control unit 5 acquires the injection pressure value of the injection unit 52, the preset angle detection value corresponding to the injection pressure value, and the real-time angle detection value of the rotary encoder 51. The die-casting control unit 5 also determines the difference between the preset angle detection value and the real-time angle detection value as the real-time angle deviation value.

[0215] In this implementation, the die-casting control unit 5 acquires the injection pressure value of the injection unit 52, the preset angle detection value corresponding to the injection pressure value, and the real-time angle detection value of the rotary encoder 51, providing a data basis for subsequent calculation of the real-time angle deviation value.

[0216] In this implementation, the die-casting control unit 5 also determines the difference between the preset angle detection value and the real-time angle detection value, and uses this difference as the real-time angle deviation value to determine whether the rotation angle of the rotating rod 41 meets the requirements.

[0217] It should be noted that when the die-casting control unit 5 matches the injection pressure value with the corresponding preset angle detection value, it pre-establishes a mapping table of different injection pressure ranges and corresponding preset angle detection values, and stores it in the internal storage module. After obtaining the current injection pressure value, it queries the mapping table to match and obtain the corresponding preset angle detection value.

[0218] S120, the die-casting control unit 5 obtains the preset angle deviation value. When the real-time angle deviation value is greater than or equal to the preset angle deviation value, the die-casting control unit 5 controls the injection unit 52 to stop injecting molten metal between the upper template 11 and the lower template 12.

[0219] In this implementation, the die-casting control unit 5 obtains a preset angle deviation value. The preset angle deviation value is a threshold for judging whether the angle deviation exceeds the standard, and is used for subsequent logical judgment.

[0220] It should be noted that when the die-casting control unit 5 calls the stored preset angle deviation value, the preset angle deviation value is pre-stored in the non-volatile storage area of ​​the die-casting control unit 5. For the current casting specification, the value is directly read from the corresponding address in the storage area to complete the calling process.

[0221] For example, for the casting currently being processed, a preset angle deviation value of 0.5 degrees is stored in a fixed address in the storage area of ​​the die-casting control unit 5. The die-casting control unit 5 directly reads the value of 0.5 degrees from this address to complete the process of calling the preset angle deviation value.

[0222] In this implementation, when the real-time angle deviation value is greater than or equal to the preset angle deviation value, the die-casting control unit 5 controls the injection unit 52 to stop injecting molten metal between the upper template 11 and the lower template 12, thus terminating the unqualified die-casting process.

[0223] It should be noted that when the die-casting control unit 5 triggers the injection unit 52 to stop injection, the control signal is sent from the control output interface of the die-casting control unit 5 and transmitted to the solenoid directional valve of the injection unit 52 through the control cable, controlling the solenoid directional valve to act and cut off the oil supply circuit of the injection cylinder.

[0224] For example, the digital output interface of the die-casting control unit 5 is connected to the control coil of the electromagnetic directional valve of the injection unit 52 via a control cable. After the stop condition is met, the die-casting control unit 5 disconnects the power supply to the digital output interface. After the electromagnetic directional valve is de-energized, it switches to the neutral position, the inlet and outlet oil circuits of the injection cylinder are cut off, the injection punch stops moving, and the signal transmission process for stopping injection is completed.

[0225] Through this implementation, the die-casting control unit synchronously acquires the injection pressure value of the injection unit, the corresponding preset angle detection value, and the real-time angle detection value of the rotary encoder, and calculates the real-time angle deviation value. This allows for precise linkage between the operating status of the injection and extrusion processes, improving the accuracy of status matching and avoiding molding defects caused by process incoordination. The comparison between the real-time angle deviation value and the preset angle deviation value serves as the basis for triggering the injection unit's action. When the real-time angle deviation value is greater than or equal to the preset angle deviation value, the injection unit is controlled to stop injecting molten metal between the upper and lower mold plates. This allows for timely termination of feeding when the extrusion state is abnormal, reducing material waste.

[0226] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A die-casting equipment for irregularly shaped automotive parts, characterized in that, Includes die-casting equipment, gantry support, position adjustment components, and pressure plate components; The die-casting equipment includes an upper mold, a lower mold, and vertically arranged guide columns. The upper mold is equipped with multiple local extrusion molds. A gantry support is horizontally arranged above the parting surface of the die-casting equipment, and the multiple local extrusion molds are vertically slidably connected to the guide columns. The position adjustment assembly includes a first hydraulic cylinder and a sliding member. The first hydraulic cylinder is located at the end of the gantry support, and the sliding member is slidably connected to the gantry support. The first hydraulic cylinder is used to drive the sliding member to slide along the gantry support. The pressure plate assembly includes a rotating rod, a second hydraulic cylinder, and a pressure head. The first end of the rotating rod and the first end of the second hydraulic cylinder are respectively hinged to the sliding member. The second end of the rotating rod and the second end of the second hydraulic cylinder are hinged together. The pressure head is rotatably connected to the rotating rod. The second hydraulic cylinder is used to drive the rotating rod to rotate so that the pressure head can extrude the local extrusion template.

2. The die-casting equipment for irregularly shaped automotive parts according to claim 1, characterized in that, It also includes a rotary encoder, an injection unit, and a die-casting control unit. The rotary encoder is mounted on the rotating shaft of the rotating rod and is used to detect the rotation angle of the rotating rod. The injection unit is used to inject molten metal between the upper and lower mold plates. The die-casting control unit is electrically connected to the rotary encoder and the injection unit, respectively. The die-casting control unit is used to acquire the injection pressure value of the injection unit, the preset angle detection value corresponding to the injection pressure value, and the real-time angle detection value of the rotary encoder. The die-casting control unit is also used to determine the difference between the preset angle detection value and the real-time angle detection value as the real-time angle deviation value. The die-casting control unit is also used to obtain a preset angle deviation value. When the real-time angle deviation value is greater than or equal to the preset angle deviation value, the die-casting control unit controls the injection unit to stop injecting molten metal between the upper and lower mold plates.

3. The die-casting equipment for irregularly shaped automotive parts according to claim 2, characterized in that, The first hydraulic cylinder is controlled by a first proportional hydraulic valve to reach its first extension position, and the second hydraulic cylinder is controlled by a second proportional hydraulic valve to reach its second extension position. The die-casting control unit is electrically connected to the first and second proportional hydraulic valves respectively, so as to control the first and second hydraulic cylinders to adapt to the extrusion of local extrusion templates of different shapes.

4. The die-casting equipment for irregularly shaped automotive parts according to claim 3, characterized in that, When the real-time angle detection value is less than the preset angle detection value, and when the real-time angle deviation value is greater than or equal to the preset angle deviation value, the die-casting control unit controls the second oil cylinder to increase the preset extrusion force in the first time period, so as to drive the rotating rod downward to rotate and reduce the real-time angle deviation value. When the real-time angle deviation value is less than the preset angle deviation value after the first time period, the die-casting control unit controls the injection unit to continue injecting molten metal between the upper and lower mold plates; when the real-time angle deviation value is still greater than or equal to the preset angle deviation value after the first time period, the die-casting control unit controls the injection unit to stop injecting molten metal between the upper and lower mold plates.

5. The die-casting equipment for irregularly shaped automotive parts according to claim 4, characterized in that, The guide column is vertically connected to the sliding member, and the guide column is equipped with a limiting plate for vertically limiting the highest position of the local extrusion template; the bottom of the pressure head is equipped with rollers to facilitate the sliding of the pressure head relative to the top surface of the local extrusion template.

6. The die-casting equipment for irregularly shaped automotive parts according to claim 5, characterized in that, There are at least two gantry supports, each gantry support is equipped with two pressure plate assemblies, each pressure plate assembly has multiple guide columns on its sliding part, and each guide column of each pressure plate assembly has a pressure sensor on its limit plate. The die-casting control unit is electrically connected to the pressure sensors corresponding to the two pressure plate assemblies. The die-casting control unit is also used to determine the first average pressure value and the first pressure variance value of the pressure sensors on the multiple guide pillars corresponding to each pressure plate assembly; When the average first pressure of multiple pressure plate assemblies is greater than or equal to the preset average first pressure and the variance of the first pressure is less than the preset variance of the first pressure, the die-casting control unit is also used to determine the variance of the multiple average first pressures corresponding to the multiple pressure plate assemblies as the second variance of the pressure; the die-casting control unit is also used to control the second cylinders of the multiple pressure plate assemblies to start running to extrude multiple local extrusion templates when the second variance of the pressure is less than the preset second variance of the pressure.

7. The die-casting equipment for irregularly shaped automotive parts according to claim 6, characterized in that, The die-casting control unit is also used to control the injection unit to continue injecting molten metal between the upper and lower mold plates when the average first pressure value is less than the preset average first pressure value, or the variance of the first pressure value is greater than or equal to the preset variance of the first pressure value.

8. The die-casting equipment for irregularly shaped automotive parts according to claim 7, characterized in that, When the average first pressure of multiple pressure plate assemblies is greater than or equal to the preset average first pressure and the first pressure variance is less than the preset first pressure variance, the die-casting control unit is also used to determine the variance of the multiple average first pressures corresponding to the multiple pressure plate assemblies as the second pressure variance. When the second pressure variance value is greater than or equal to the preset second pressure variance value, a first duration for which the second pressure variance value is greater than or equal to the preset second pressure variance value is determined. When the first duration is greater than or equal to the preset first duration, the die-casting control unit issues a prompt message to prompt the correction of the position of the local extrusion template.

9. The die-casting equipment for irregularly shaped automotive parts according to claim 8, characterized in that, The die-casting control unit is also used to obtain the pressure compensation priority of multiple pressure plate assemblies; The die-casting control unit is also used to control the second cylinder of the first pressure plate assembly to start running and extrude the local extrusion template corresponding to the first pressure plate assembly according to the pressure compensation priority of multiple pressure plate assemblies. When the first average pressure value of the first pressure plate assembly corresponding to the highest pressure compensation priority is greater than or equal to the preset first average pressure value and the first pressure variance value is less than the preset first pressure variance value, the die-casting control unit controls the second cylinder of the first pressure plate assembly to start running and extrude the local extrusion template corresponding to the first pressure plate assembly.

10. A method for detecting the state of die casting, characterized in that, The method includes: The die-casting control unit acquires the injection pressure value of the injection unit, the preset angle detection value corresponding to the injection pressure value, and the real-time angle detection value of the rotary encoder. The die-casting control unit also determines the difference between the preset angle detection value and the real-time angle detection value as the real-time angle deviation value. The die-casting control unit obtains a preset angle deviation value. When the real-time angle deviation value is greater than or equal to the preset angle deviation value, the die-casting control unit controls the injection unit to stop injecting molten metal between the upper and lower mold plates.

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