Electric mold closing mechanism of core making machine and intelligent control method

Abstract

The invention discloses an electric mold closing mechanism of a core making machine and an intelligent control method. The electric mold closing mechanism comprises a toggle rod mechanism and a flexible output mechanism, wherein the toggle rod mechanism consists of a driving unit, a connecting rod push plate, a connecting rod, a front toggle rod, a core body forming mold cavity, a rear toggle rod, a rear toggle rod seat, a front toggle rod seat and a nut. The servo motor drives the lead screw to rotate, so that a thread pair is converted into linear motion of the nut, the connecting rod push plate and the toggle rod mechanism are driven, lifting or transverse linear motion of the movable mold plate is achieved, the mold closing guide rail and the guide sleeve guide the movable mold plate to move, stable motion is ensured, shaking or deflection is avoided, and the mold closing precision and the sand core quality are improved; the balance cylinder is used for balancing the opening force of the toggle rod mechanism and the gravity of the die, reducing the burden of the servo motor, prolonging the service life of the motor and improving the dynamic response speed of the system.

Description

Technical Field

[0001] The invention relates to the technical field of core making and casting processing, and in particular to an electric mold clamping mechanism of a core making machine and an intelligent control method. Background Art

[0002] The core making machine is a kind of casting equipment that integrates the core shooting machine and the core cooling machine. It is mainly composed of a sand shooting mechanism, a mold clamping mechanism, a curing box and a core pulling and demolding mechanism. It uses high-speed sand shooting technology to send the sand core into the core box and solidify it at a specific temperature to achieve rapid molding and hardening of the sand core. Each cycle takes only a dozen to dozens of seconds, thereby efficiently producing sand cores for casting. These sand cores have high dimensional accuracy and smooth surface, so they are widely used in the casting machinery industry.

[0003] However, there are some problems with the air cylinder or oil cylinder driven clamping mechanism commonly used in core making machines. This driving method is not stable enough, has extremely high requirements for the sealing system, and is prone to oil and gas leakage, causing environmental pollution. In addition, its output characteristics are difficult to adjust, the output force stability is poor, and it is impossible to provide a stable and accurate clamping force. There is also a delay in each action, resulting in a slow production cycle and unable to provide accurate data support for the system. Therefore, it is necessary to provide an electric clamping mechanism and intelligent control method for a core making machine to solve the above technical problems. Summary of the invention

[0004] The purpose of the present invention is to provide an electric clamping mechanism and an intelligent control method for a core making machine, so as to solve the problems proposed in the above background technology that the output characteristics of the cylinder or oil cylinder driven clamping mechanism are difficult to adjust, the output force stability is poor, and a stable and accurate clamping force cannot be provided. In addition, each action has a delay, resulting in a slow production cycle and an inability to provide accurate data support for the system. The technical solution of the present invention is aimed at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electric mold clamping mechanism of a core making machine and an intelligent control method thereof, comprising a drive unit, a connecting rod push plate, a connecting rod, a front elbow rod, a core forming cavity, a rear elbow rod, a rear elbow rod seat, a front elbow rod seat and a nut, and a flexible output mechanism. When the mold clamping mechanism is placed vertically, a servo motor is started, and a flexible output motion is provided by inputting programming, driving the screw rod to rotate, and driving the nut and the connecting rod push plate to make vertical linear motion; When the clamping mechanism is placed horizontally, the screw is driven by rotation to drive the nut and the connecting rod push plate to make horizontal linear motion, thereby cooperating with the elbow mechanism to drive the movable template to make lifting linear motion or horizontal linear motion, thereby ensuring stable and accurate clamping force to close or open the core body inside the core forming cavity.

[0006] In a further embodiment, the front elbow link is movably connected to the rear elbow link via a hinge shaft, and the rear elbow link is movably connected to the connecting rod via a hinge shaft, the connecting rod is movably connected to the connecting rod push plate via a hinge shaft, and a nut is installed above the connecting rod push plate, a lead screw is threadedly connected to the inside of the nut, and a servo motor is installed on the lead screw via a coupling and a reducer; and / or, the servo motor can be optionally equipped with an ordinary motor or a stepper motor.

[0007] In a further embodiment, the connecting rod in the elbow mechanism can be a straight connecting rod or a concave connecting rod, a convex connecting rod, a triangular plate, a circular plate or a bracket connecting rod; and / or, the front elbow rod, the rear elbow rod and the connecting rod in the elbow mechanism are at least two each, and can be designed with two, four, six or eight according to the size of the equipment. The connecting rod can be connected in the middle position of the rear elbow rod or at the hinge between the rear elbow rod and the front elbow rod.

[0008] In a further embodiment, one end of the front elbow rod is connected to a front elbow rod seat, and one end of the rear elbow rod is installed with a rear elbow rod seat.

[0009] In a further embodiment, the front toggle rod seat is symmetrically arranged above the tailstock template, and the rear toggle rod seat is symmetrically arranged at the bottom of the movable template.

[0010] In a further embodiment, it also includes an adjusting nut and a mold closing guide sleeve, two of the adjusting nuts form a group, and are separated by a tail stock template and are threadedly connected to the outer side of one end of the mold closing guide sleeve, and the other end of the mold closing guide sleeve is connected to one side of the movable template.

[0011] In a further embodiment, it also includes a connecting rod push plate guide rod and a connecting rod push plate guide sleeve. The connecting rod push plate guide rod forms a telescopic structure with the tailstock template through the connecting rod push plate guide sleeve and is symmetrically installed.

[0012] In a further embodiment, it also includes a mold closing guide rail and a mold closing guide sleeve. The movable template cooperates with the mold closing guide rail through the mold closing guide sleeve. The mold closing guide rail and the tail stock template are limited by adjusting nuts to make slight adjustments to the mold closing distance.

[0013] In a further embodiment, a balancing cylinder is also included. The balancing cylinder is arranged between the tailstock template and the movable template to reduce the opening force after the elbow rod contracts and balance the gravity of the mold.

[0014] In a further embodiment, an openable and closable core forming cavity is installed on one side of the movable template, and a fixed template is connected to one side of the core forming cavity.

[0015] In a further embodiment, the driving unit includes a servo motor and a lead screw, or may be a servo motor and a pull rod mechanism.

[0016] A method for an intelligent control device of an electric mold clamping mechanism of a core making machine, the specific steps are as follows: The servo motor performs rotational motion at a specific speed, acceleration and position accuracy according to the preset program or instruction. The servo motor is connected to the reducer through a coupling. The reducer reduces the speed and increases the torque so that the screw rod obtains sufficient thrust during the rotation process. The rotational motion of the screw rod is converted into the linear motion of the nut through the thread pair. The nut is connected to the connecting rod push plate, so the linear motion of the nut also drives the connecting rod push plate to do vertical or horizontal linear motion. The elbow mechanism is composed of a front elbow, a rear elbow and a connecting rod to form a four-bar mechanism. The connecting rod push plate is connected to the connecting rod, so the linear motion of the connecting rod push plate also drives the connecting rod to move. The movement of the connecting rod is transmitted to the front elbow and the rear elbow through the hinge shaft, so that the front elbow and the rear elbow rotate around the hinge shaft. The rotational motion of the front elbow and the rear elbow is coordinated through the elbow mechanism, and drives the movable template to do lifting or horizontal linear motion; When the servo motor rotates forward, the screw drives the connecting rod push plate and the connecting rod to move, so that the toggle mechanism drives the movable template to move closer to the fixed template, thereby achieving mold closing of the core forming cavity; When the servo motor rotates in the reverse direction, the screw drives the connecting rod push plate and the connecting rod to move, so that the toggle mechanism drives the movable template to move away from the fixed template, thereby realizing the opening of the core forming cavity; Through the precise control of the servo motor, the mold closing and mold opening process can be precisely controlled, including the input parameters of mold closing force, mold closing speed, and mold closing distance. Different mold closing / opening programs can be preset according to actual needs to meet different production requirements. The data such as mold closing force and mold closing speed can be collected in real time for system monitoring and fault diagnosis. The adjusting nut is used to adjust the mold closing distance to ensure the mold closing accuracy. The mold closing guide rail and mold closing guide sleeve are used to guide the movement of the movable template to ensure smooth movement. The balancing cylinder is used to balance the opening force of the toggle mechanism and the gravity of the mold, reducing the burden on the servo motor; The connecting rod push plate guide rod and the connecting rod push plate guide sleeve are used to guide the movement of the connecting rod push plate to ensure smooth movement.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention realizes precise control of the mold closing / opening process, including parameters such as mold closing force, mold closing speed, and mold closing distance, by precisely controlling the rotation of the screw rod through a servo motor. Different mold closing / opening programs can be preset to meet different production requirements. For example, customized control can be performed for sand cores of different sizes and shapes. Data such as mold closing force and mold closing speed can be collected in real time for system monitoring and fault diagnosis, so as to timely discover and solve problems and improve production efficiency and product quality.

[0018] 2. The present invention drives the screw to rotate through a servo motor, so that the thread pair is converted into the linear motion of the nut, driving the connecting rod push plate and the elbow mechanism to realize the lifting or lateral linear motion of the movable template. The mold guide rail and the guide sleeve guide the movement of the movable template to ensure smooth movement and avoid shaking or deflection, thereby improving the mold closing accuracy and sand core quality. The balancing cylinder is used to balance the opening force of the elbow mechanism and the gravity of the mold, reducing the burden on the servo motor, extending the service life of the motor, and improving the dynamic response speed of the system.

[0019] 3. The present invention uses electric drive without the need for a hydraulic system, thus avoiding oil and gas leakage, reducing environmental pollution, and meeting the requirements of green production.

[0020] 4. In the present invention, the connecting rod in the elbow mechanism can be straight, concave, convex, triangular plate, circular plate or bracket connecting rod, and the number can be flexibly adjusted to meet different equipment needs and production requirements. The front elbow and the rear elbow can be connected at different positions to meet different equipment sizes and space restrictions.

[0021] 5. The present invention can improve production efficiency and product quality, reduce scrap rate, and has smooth movement, which can extend equipment service life, reduce maintenance costs, and is environmentally friendly, meeting the requirements of green production. Through the intelligent control device, the mold closing / opening process can be automated, manual operations can be reduced, labor intensity can be reduced, and production efficiency can be improved. The electric drive method has a simple structure, is easy to maintain, and reduces maintenance costs. By adjusting the nut and the mold closing guide rail, the mold closing distance can be accurately controlled to ensure mold closing accuracy, prevent excessive movement of the movable template, and ensure safety. The invention can be applied to different types of core making machines and has good adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A structural schematic diagram of a preferred embodiment of the electric mold clamping mechanism and intelligent control method of a core making machine provided by the present invention; Figure 2 for Figure 1 The schematic diagram of the installation structure of the adjusting nut and the mold guide sleeve is shown; Figure 3 for Figure 1 Schematic diagram of the structure of the screw rod and nut installation.

[0023] Figure 4 for Figure 1 Schematic diagram of the structure of the servo motor and the pull rod mechanism shown.

[0024] In the figure: 1. servo motor; 2. reducer; 3. screw; 4. coupling; 5. connecting rod push plate; 6. connecting rod; 7. front elbow rod; 8. movable template; 9. tailstock template; 10. adjusting nut; 11. connecting rod push plate guide rod; 12. connecting rod push plate guide sleeve; 13. mold closing guide rail; 14. mold closing guide sleeve; 15. balancing cylinder; 16. core forming cavity; 17. fixed template; 18. rear elbow rod; 19. rear elbow rod seat; 20. front elbow rod seat; 21. articulated shaft; 22. nut. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-4, an embodiment of the present invention: an electric mold clamping mechanism of a core making machine and an intelligent control method, comprising a drive unit, a connecting rod push plate 5, a connecting rod 6, a front elbow rod 7, a core forming cavity 16, a rear elbow rod 18, a rear elbow rod seat 19, a front elbow rod seat 20 and a nut 22 composed of an elbow mechanism and a flexible output mechanism. When the mold clamping mechanism is placed vertically, the servo motor 1 is started, and a flexible output motion is provided by inputting programming, driving the screw rod 3 to rotate, driving the nut 22 and the connecting rod push plate 5 to make vertical linear motion; when the mold clamping mechanism is placed vertically, the servo motor 1 is started, and the flexible output motion is provided by inputting programming, driving the screw rod 3 to rotate, and driving the nut 22 and the connecting rod push plate 5 to make vertical linear motion; when the When the mold clamping mechanism is placed horizontally, under the rotational driving action of the screw rod 3, the nut 22 and the connecting rod push plate 5 are driven to make horizontal linear motion, thereby cooperating with the elbow mechanism to drive the movable template 8 to make lifting linear motion or horizontal linear motion, thereby ensuring a stable and accurate clamping force to close or open the mold for the core body inside the core forming cavity 16. The connecting rod 6 in the elbow mechanism can be a straight connecting rod 6 or a concave connecting rod 6, a convex, a triangular plate, a circular plate or a bracket connecting rod 6; and / or, the front elbow in the elbow mechanism The rod 7, the rear elbow rod 18 and the connecting rod 6 are at least two each, and two, four, six, or eight can be designed according to the size of the equipment. The connecting rod 6 can be connected at the middle position of the rear elbow rod 18 or at the hinge of the rear elbow rod 18 and the front elbow rod 7. One end of the front elbow rod 7 is connected to the front elbow rod seat 20, and one end of the rear elbow rod 18 is installed with the rear elbow rod seat 19. The front elbow rod seat 20 is symmetrically arranged above the tailstock template 9, and the rear elbow rod seat 19 is symmetrically arranged at the bottom of the movable template 8. The front elbow rod 7 is movably connected to the rear elbow rod 18 through the hinge shaft 21. The rear elbow rod 18 is movably connected to the connecting rod 6 through the hinge shaft 21, the connecting rod 6 is movably connected to the connecting rod push plate 5 through the hinge shaft 21, and a nut 22 is installed on the connecting rod push plate 5, the inner thread of the nut 22 is connected to the screw rod 3, and the screw rod 3 is installed with a servo motor 1 through a coupling 4 and a reducer 2; and / or, the servo motor 1 can be equipped with an ordinary motor or a stepper motor, and a core forming cavity 16 that can be opened and closed is installed on one side of the movable template 8, and a fixed template 17 is connected to one side of the core forming cavity 16; In the design of the above structure, the servo motor 1 performs rotational motion at a specific speed, acceleration and position accuracy according to a preset program or instruction. The servo motor 1 is connected to the reducer 2 through a coupling 4. The reducer 2 reduces the speed and increases the torque, so that the screw 3 obtains sufficient thrust during the rotation process. The rotational motion of the screw 3 is converted into the linear motion of the nut 22 through the thread pair. The nut 22 is connected to the connecting rod push plate 5, so the linear motion of the nut 22 also drives the connecting rod push plate 5 to perform vertical or horizontal linear motion. The elbow mechanism is composed of a front elbow 7, a rear elbow 18 and a connecting rod 6 to form a four-bar linkage. The connecting rod push plate 5 is connected to the connecting rod 6, so the linear motion of the connecting rod push plate 5 also drives the connecting rod 6 movement, the movement of the connecting rod 6 is transmitted to the front elbow rod 7 and the rear elbow rod 18 through the hinge shaft 21, so that the front elbow rod 7 and the rear elbow rod 18 rotate around the hinge shaft 21, and the rotational movement of the front elbow rod 7 and the rear elbow rod 18 is coordinated by the elbow mechanism, and drives the movable template 8 to do lifting or horizontal linear movement; when the servo motor 1 rotates forward, the screw rod 3 drives the connecting rod push plate 5 and the connecting rod 6 to move, so that the elbow mechanism drives the movable template 8 to move close to the fixed template 17, so as to achieve the mold closing of the core forming cavity 16; when the servo motor 1 rotates reversely, the screw rod 3 drives the connecting rod push plate 5 and the connecting rod 6 to move, so that the elbow mechanism drives the movable template 8 to move away from the fixed template 17, so as to achieve the mold opening of the core forming cavity 16; Through precise control of the servo motor 1, precise control of the mold closing and opening processes can be achieved, including input parameters of mold closing force, mold closing speed, and mold closing distance. Different mold closing / opening programs can be preset according to actual needs to meet different production requirements. Data such as mold closing force and mold closing speed can be collected in real time for system monitoring and fault diagnosis.

[0027] It also includes an adjusting nut 10 and a mold clamping guide sleeve 14. Two adjusting nuts 10 form a group and are separated by a tailstock template 9 and are threadedly connected to the outer side of one end of the mold clamping guide sleeve 14. The other end of the mold clamping guide sleeve 14 is connected to one side of the movable template 8. In the design of the above structure, the adjusting nut 10 is used to adjust the mold closing distance to ensure the mold closing accuracy, and the mold closing guide rail 13 and the mold closing guide sleeve 14 are used to guide the movement of the movable template 8 to ensure smooth movement.

[0028] It also includes a connecting rod push plate guide rod 11 and a connecting rod push plate guide sleeve 12. The connecting rod push plate guide rod 11 forms a telescopic structure with the tailstock template 9 through the connecting rod push plate guide sleeve 12, and is symmetrically installed; In the above structural design, the connecting rod push plate guide rod 11 and the connecting rod push plate guide sleeve 12 are used to guide the movement of the connecting rod push plate 5 to ensure smooth movement.

[0029] It also includes a mold clamping guide rail 13 and a mold clamping guide sleeve 14. The movable template 8 cooperates with the mold clamping guide rail 13 through the mold clamping guide sleeve 14. The mold clamping guide rail 13 and the tailstock template 9 are limited by the adjusting nut 10 to make a slight adjustment of the mold clamping distance. According to the design of the above structure, when the servo motor 1 drives the movable template 8 to perform mold closing or mold opening movement, the mold closing guide sleeve 14 slides in the mold closing guide rail 13 to ensure the smooth movement of the movable template 8 and prevent shaking or deflection. By adjusting the nut 10, the position of the mold closing guide rail 13 can be accurately controlled, thereby achieving a slight adjustment of the mold closing distance to ensure the mold closing accuracy. The adjusting nut 10 can limit the movement range of the mold closing guide rail 13 to prevent the movable template 8 from excessive movement and ensure safety.

[0030] It also includes a balancing cylinder 15, which is arranged between the tailstock template 9 and the movable template 8 to reduce the opening force after the elbow is contracted and balance the gravity of the mold; In the above structural design, the balancing cylinder 15 is used to balance the opening force of the toggle mechanism and the mold gravity, thereby reducing the burden on the servo motor 1.

[0031] The driving unit includes a servo motor and a screw rod 3, or may be a servo motor and a pull rod mechanism; like Figure 4 As shown, the design of the above structure can also use a servo motor housing to drive the pull rod mechanism to drive the device to close and open the mold.

[0032] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. In the description of the present invention, unless otherwise specified, "multiple" means two or more; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An electric mold clamping mechanism for a core making machine, characterized in that: The invention comprises a toggle mechanism and a flexible output mechanism composed of a driving unit, a connecting rod push plate (5), a connecting rod (6), a front toggle rod (7), a core forming cavity (16), a rear toggle rod (18), a rear toggle rod seat (19), a front toggle rod seat (20) and a nut (22). When the mold clamping mechanism is placed vertically, the servo motor (1) is started to provide a flexible output motion by inputting programming, driving the screw rod (3) to rotate, thereby driving the nut (22) and the connecting rod push plate (5) to perform vertical linear motion; When the mold clamping mechanism is placed horizontally, the screw (3) is driven by rotation to drive the nut (22) and the connecting rod push plate (5) to make horizontal linear motion, thereby cooperating with the elbow mechanism to drive the movable template (8) to make lifting linear motion or horizontal linear motion, thereby ensuring a stable and accurate clamping force to close or open the mold of the core inside the core molding cavity (16).

2. The electric mold clamping mechanism of a core making machine according to claim 1, characterized in that: The front elbow rod (7) is movably connected to the rear elbow rod (18) via a hinge shaft (21), and the rear elbow rod (18) is movably connected to the connecting rod (6) via a hinge shaft (21), and the connecting rod (6) is movably connected to the connecting rod push plate (5) via a hinge shaft (21), and a nut (22) is installed above the connecting rod push plate (5), and a screw rod (3) is connected to the inner thread of the nut (22), and the screw rod (3) is installed with a servo motor (1) via a coupling (4) and a reducer (2); And / or, the servo motor (1) may be a common motor or a stepping motor.

3. The electric mold clamping mechanism of a core making machine according to claim 2, characterized in that: The connecting rod (6) in the toggle mechanism may be a straight connecting rod (6) or a concave connecting rod (6), a convex connecting rod, a triangular plate, a circular plate or a bracket connecting rod (6); And / or, the number of the front elbow rod (7), the rear elbow rod (18) and the connecting rod (6) in the elbow rod mechanism is at least two, and the number of the connecting rod (6) can be two, four, six or eight according to the size of the equipment. The connecting rod (6) can be connected at the middle of the rear elbow rod (18) or at the hinge between the rear elbow rod (18) and the front elbow rod (7).

4. The electric mold clamping mechanism of a core making machine according to claim 2, characterized in that: One end of the front elbow rod (7) is connected to a front elbow rod seat (20), and one end of the rear elbow rod (18) is installed with a rear elbow rod seat (19). The front elbow rod seat (20) is symmetrically arranged above the tailstock template (9), and the rear elbow rod seat (19) is symmetrically arranged at the bottom of the movable template (8).

5. The electric mold clamping mechanism of a core making machine according to claim 4, characterized in that: It also includes an adjusting nut (10) and a mold clamping guide sleeve (14), wherein two adjusting nuts (10) form a group and are separated by a tailstock template (9) and are threadedly connected to the outer side of one end of the mold clamping guide sleeve (14), and the other end of the mold clamping guide sleeve (14) is connected to one side of the movable template (8).

6. The electric mold clamping mechanism of a core making machine according to claim 5, characterized in that: It also includes a connecting rod push plate guide rod (11) and a connecting rod push plate guide sleeve (12), wherein the connecting rod push plate guide rod (11) forms a telescopic structure with the tailstock template (9) through the connecting rod push plate guide sleeve (12), and the structures are symmetrically installed.

7. The electric mold clamping mechanism of a core making machine according to claim 1, characterized in that: The mold clamping guide rail (13) and the mold clamping guide sleeve (14) are also included. The movable template (8) cooperates with the mold clamping guide rail (13) through the mold clamping guide sleeve (14). The mold clamping guide rail (13) and the tailstock template (9) are limited by the adjusting nut (10) to make a slight adjustment of the mold clamping distance.

8. The electric mold clamping mechanism of a core making machine according to claim 1, characterized in that: It also includes a balancing cylinder (15), which is arranged between the tailstock template (9) and the movable template (8) to reduce the opening force after the elbow rod is contracted and balance the weight of the mold.

9. The electric mold clamping mechanism of a core making machine according to claim 4, characterized in that: A core body forming cavity (16) that can be opened and closed is installed on one side of the movable template (8), and a fixed template (17) is connected to one side of the core body forming cavity (16).

10. The electric mold clamping mechanism of a core making machine according to claim 4, characterized in that: The driving unit comprises a servo motor and a screw rod (3), or may be a servo motor and a pull rod mechanism.

11. A method for intelligent control of electric mold clamping mechanism of core making machine according to claims 1 to 10, characterized in that: The specific steps are as follows: The servo motor (1) performs rotational motion at a specific speed, acceleration and position accuracy according to a preset program or instruction. The servo motor (1) is connected to the reducer (2) through a coupling (4). The reducer (2) reduces the rotation speed and increases the torque so that the screw (3) obtains sufficient thrust during the rotation process. The rotational motion of the screw (3) is converted into the linear motion of the nut (22) through a threaded pair. The nut (22) is connected to the connecting rod push plate (5), so the linear motion of the nut (22) also drives the connecting rod push plate (5) to perform vertical or horizontal linear motion. The toggle mechanism is composed of a front toggle (7), a rear toggle (18) and a connecting rod (6), forming a four-bar linkage. The connecting rod push plate (5) is connected to the connecting rod (6), so the linear motion of the connecting rod push plate (5) also drives the connecting rod (6) to move. The motion of the connecting rod (6) is transmitted to the front toggle (7) and the rear toggle (18) through the hinge shaft, so that the front toggle (7) and the rear toggle (18) rotate around the hinge shaft (21). The rotational motion of the front toggle (7) and the rear toggle (18) is coordinated through the toggle mechanism, and drives the movable template (8) to perform lifting or horizontal linear motion. When the servo motor (1) rotates in the forward direction, the screw (3) drives the connecting rod push plate (5) and the connecting rod (6) to move, so that the toggle mechanism drives the movable template (8) to move closer to the fixed template (17), thereby achieving mold closing of the core molding cavity (16); When the servo motor (1) rotates in the reverse direction, the screw (3) drives the connecting rod push plate (5) and the connecting rod (6) to move, so that the toggle mechanism drives the movable template (8) to move away from the fixed template (17), thereby realizing the opening of the core forming cavity (16); By precisely controlling the servo motor (1), precise control of the mold closing and mold opening processes can be achieved, including input parameters of mold closing force, mold closing speed, and mold closing distance. Different mold closing / opening programs can be preset according to actual needs to meet different production requirements. Data such as mold closing force and mold closing speed can be collected in real time for system monitoring and fault diagnosis. The adjusting nut (10) is used to adjust the mold closing distance to ensure the mold closing accuracy, and the mold closing guide rail (13) and the mold closing guide sleeve (14) are used to guide the movement of the movable template (8) to ensure smooth movement; The balancing cylinder (15) is used to balance the opening force of the toggle mechanism and the weight of the mold, thereby reducing the burden on the servo motor (1); The connecting rod push plate guide rod (11) and the connecting rod push plate guide sleeve (12) are used to guide the movement of the connecting rod push plate (5) to ensure smooth movement.

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