Toggle rod type mold closing and core ejecting mechanism of double-mold-opening core making machine and application of toggle rod type mold closing and core ejecting mechanism

Abstract

The invention discloses a toggle rod type mold closing and core ejecting mechanism of a double-mold-opening core making machine and application of the toggle rod type mold closing and core ejecting mechanism, and relates to the technical field of core making machine production equipment for casting. The toggle rod type mold closing and core ejecting mechanism comprises a power driving module, a mold action module and a core ejecting execution module; the core ejection execution module is synchronously driven to operate, and the core ejection execution module completes core ejection operation while opening the mold; and the mold action module is arranged on one side of the mold and is driven by the power driving module to realize bidirectional mold opening and closing movement of the mold. The invention aims to solve the problems of low one-way mold opening and coring efficiency and poor quality of a traditional core making machine, large occupied area of conventional two-way mold opening equipment, complex synchronizing mechanism and easy failure and the like, realizes two-way mold opening and closing by means of single-side driving, ensures high synchronism of movement of molds on two sides while saving equipment mounting space and reducing maintenance difficulty, and improves production efficiency. Therefore, the core making process precision, stability and production efficiency are improved.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of core-making machine production equipment for casting, and specifically to a toggle-type mold-closing and core-pushing mechanism for a double-opening mold core-making machine and its application. Background Art

[0002] In the casting industry, the mold-closing operation of the core-making machine is a key link affecting the production efficiency and quality of sand cores. The mold-closing methods of traditional core-making machines mainly include single-direction mold opening and conventional double-direction mold opening.

[0003] Single-direction mold opening has serious deficiencies in the process of sand core demolding. Since it only provides demolding force from one side, problems such as sand core jamming and offset often occur, making it difficult for the sand core to be smoothly separated from the mold. In this case, it is necessary to rely on manual operation to take out the sand core, which not only consumes a large amount of manpower and time, but also the instability of manual operation is extremely likely to cause damage to the sand core, resulting in a high scrap rate, seriously restricting the improvement of production efficiency and the guarantee of product quality.

[0004] Conventional double-direction mold opening attempts to overcome the disadvantages of single-direction mold opening. It mainly relies on mechanical structures symmetrically arranged on both sides of the mold to achieve. When opening the mold, the structures on both sides are started synchronously. Through the coordinated movement of components such as connecting rods and tie rods, opposite-direction pulling forces or pushing forces are generated, causing the moving mold to move linearly along the guide rails to both sides to realize the opening of the mold. When closing the mold, the structures on both sides act in the reverse direction, driving the moving mold to accurately align, ensuring that the mold is tightly closed, and preparing for the next core-making process. During the whole process, each component cooperates closely to achieve efficient and stable double-direction mold opening and closing operations.

[0005] Compared with single-direction mold opening, double-direction mold opening has the following advantages: 1. Improve core-taking efficiency and quality: Single-direction mold opening is prone to problems such as sand core jamming and offset, requiring manual operation and being easy to damage the sand core. Double-direction mold opening makes the sand core evenly stressed, can be smoothly demolded, and can use a manipulator to automatically take the core, reducing manual intervention and the risk of sand core damage, significantly improving the core-taking efficiency and quality.

[0006] 2. Enhance the mold life and stability: Single-direction mold opening causes concentrated stress on one side of the mold, prone to wear and deformation. Double-direction mold opening makes the forces on both sides of the mold balanced, dispersing the demolding and mold opening and closing forces, reducing local stress, effectively extending the service life of the mold, maintaining the mold accuracy and stability, and ensuring the continuity of production.

[0007] However, the existing two-way mold opening also brings a series of new problems. From the perspective of equipment layout, the bilateral mechanical structure significantly increases the floor area of the equipment. In the current situation where industrial production site resources are increasingly tense, it greatly restricts the production planning and space utilization efficiency of enterprises. In terms of synchronous control, in order to ensure that the bilateral mechanical structures can move synchronously, it is necessary to additionally install complex synchronous mechanisms. These synchronous mechanisms not only significantly increase the manufacturing cost and assembly difficulty of the equipment, but also during the long-term operation of the equipment, due to their numerous components and complex connection links, the maintenance and debugging work is extremely cumbersome and complex. Once the synchronous mechanism deviates or fails, it will directly affect the stability and continuity of production, becoming an important bottleneck for the efficient operation of the core-making machine and the development of the industry.

[0008] In summary, the existing single-way and conventional two-way mold opening methods both have obvious defects. There is an urgent need for a new mold closing technical solution to solve these problems, so as to improve the overall performance and production efficiency of the core-making machine and meet the continuous development needs of the casting industry. Summary of the Invention

[0009] The present invention aims to solve the problems of low core-taking efficiency and poor quality in the single-way mold opening of traditional core-making machines, as well as large equipment footprint and complex and prone-to-failure synchronous mechanisms in conventional two-way mold opening. The present invention provides a toggle-type mold closing and core pushing mechanism for a double-mold-opening core-making machine and its application, which realizes two-way mold opening and closing by relying on single-side drive. While saving the equipment installation space and reducing the maintenance difficulty, it ensures a high degree of synchronism in the movement of the bilateral molds, thereby improving the core-making process precision, stability and production efficiency.

[0010] In contrast, To solve the above technical problems, the technical solution adopted by the present invention is as follows: In the first aspect, the present invention provides a toggle-type mold closing and core pushing mechanism for a double-mold-opening core-making machine, which includes a power drive module, a mold action module and a core pushing execution module: The power drive module provides power to enable the mold action module to realize the mold opening and closing actions, and simultaneously drives the core pushing execution module to operate. The core pushing execution module completes the core pushing operation while opening the mold, realizing the coordinated control of mold opening and closing and core pushing operations during the core-making process; The mold action module is arranged on one side of the mold, and realizes the two-way mold opening and closing movement of the mold under the drive of the power drive module.

[0011] Driven by the power drive module, the two-way opening and closing movement of the mold is realized through a specific transmission and connection structure. This process is based on the single-side drive principle, ensuring that under the drive of a single drive source, the opening and closing actions of the mold can be accurately and stably realized, while meeting the requirements of different opening and closing strokes and speeds. Among them, the realization of two-way mold opening with single-side drive has the advantages of simplified structure, reduced cost, improved reliability, strong versatility and adaptability, and high energy utilization efficiency. It can make the overall structure of the mechanism simple and compact, reduce the number of components and corresponding transmission components, reduce manufacturing costs, processing and assembly and maintenance costs, reduce the risk of failure, improve the reliability and stability of the system, reduce the defective rate, be convenient to adjust to adapt to different molds, improve the versatility and adaptability of the mechanism, reduce energy transfer losses, and improve energy utilization efficiency.

[0012] In some ways that can be realized in the first aspect, the mold action module includes a toggle link assembly, which includes two sets of link components symmetrically distributed. One set of link components is used to connect with the connection template on one side or the movable part of the mold to realize the connection of the mold; the other set of link components is used to connect with the mounting plate, and the driving part connected to the mounting plate is used to push the connection template on the other side or the movable part of the mold to perform a linear motion.

[0013] The two sets of link components of the toggle link assembly are respectively connected to different parts to form a linked whole. When one set of link components is connected to the connection template or the movable part of the mold, and the other side is connected to the mounting plate, the power applied by the driving part will cause the entire toggle link assembly to act. Through the cooperation of the symmetrically distributed link components and the driving part, the power is reasonably distributed and transmitted within the toggle link assembly, thereby pushing the connection template or the movable part of the mold to perform a linear motion along a predetermined trajectory. In this process, the link components play the role of force transmission and motion conversion, converting the power from the driving part into the linear motion of the connection template or the movable part of the mold to realize the opening and closing actions of the mold.

[0014] In some ways that can be realized in the first aspect, a through hole for the driving part to pass through is provided on the connection template on one side, and the connection template on the other side is connected to the end of the driving part far away from the mounting plate; And / or, the number of the driving parts is not limited to one; And / or, the connection template and the mounting plate are respectively provided with a guide sleeve seat and a sliding seat, and the guide sleeve seat and the sliding seat slide linearly along the guide rail of the base.

[0015] The through holes on the connection template provide installation and movement space for the driving member, enabling the driving member to pass through and push the connection template or the movable part of the mold on the other side. The number of driving members can be flexibly set according to factors such as the mold size and the power required for mold opening and closing. Multiple driving members can provide power simultaneously, improving the reliability and stability of power transmission. The guide bushing seat and the sliding seat are respectively installed on the connection template and the mounting plate. During the mold opening and closing process, the connection template and the mounting plate slide linearly on the guide rail. The guide bushing seat plays an accurate guiding and supporting role for the connection template, ensuring that the connection template slides smoothly along the guide rail, while the sliding seat provides stable sliding support for the mounting plate, reducing friction and wear.

[0016] In some ways that can be achieved in the first aspect, the power driving module includes a driving component, an eccentric wheel, and a driving rod. The eccentric wheel rotates eccentrically under the drive of the driving component and converts the rotational motion into a linear reciprocating motion through the driving rod. The driving rod is connected to the driving component of the mold action module; the driving component includes but is not limited to a servo motor, a stepping motor, or a reduction motor.

[0017] Adopting this power driving module structure, the precise control characteristics of the motor can be utilized to accurately adjust the power output according to different core-making process requirements. For example, in different core-making stages, by adjusting the speed and torque of the motor, the speed and eccentricity of the eccentric wheel can be precisely controlled, and further the speed and stroke of the linear reciprocating motion of the driving rod can be controlled, realizing fine control of the mold opening and closing actions. At the same time, this structure converts the rotational power into linear power through a simple mechanical structure, improving the efficiency and reliability of power conversion, and reducing the energy loss and failure risk brought by complex power conversion mechanisms.

[0018] In some ways that can be achieved in the first aspect, the eccentricity of the eccentric wheel can be adjusted, and the adjustment method is to replace eccentric wheels of different specifications or adopt an eccentric wheel structure with adjustable eccentricity to control the stroke of the driving rod.

[0019] The adjustability of the eccentricity brings high flexibility and adaptability to this mechanism, enabling the toggle-type mold closing and core pushing mechanism of this double-opening mold core-making machine to easily adapt to mold opening and closing operations with different sizes and process requirements. By simple adjustment operations, the amplitude and speed of mold opening and closing can be changed without complex re-design or adjustment of the entire power system, reducing the complexity and cost of equipment adjustment, improving the versatility and production efficiency of the equipment, and ensuring the accuracy and stability of different mold opening and closing operations.

[0020] In some implementations of the first aspect, the power drive module includes a drive component and a drive rod. The drive rod drives the die action module to perform a linear motion under the drive of the drive component, realizing the two-way die opening and closing actions of the die; and / or, the drive component includes, but is not limited to, a cylinder and a hydraulic cylinder.

[0021] When a cylinder or a hydraulic cylinder is used as the drive component, the linear telescopic motion of the cylinder or the hydraulic cylinder is directly transmitted to the drive rod. Since the cylinder and the hydraulic cylinder can provide a strong linear driving force, the drive rod directly transmits this linear power to the die action module to push the die to perform the die opening and closing actions. This method utilizes the high output force characteristics of the cylinder and the hydraulic cylinder to provide sufficient power for the die opening and closing operations of the die. Especially when a large die opening force is required, it can ensure the smooth progress of the actions.

[0022] In some implementations of the first aspect, the toggle link assembly further includes: An upper articulated rod, which is articulated with the drive rod, is used to receive the power of the drive component, and drives the link components on both sides to perform a closing or opening operation, thereby realizing the die closing or die opening action; A lower articulated rod, which is connected to the core pushing execution module, is used to drive the core pushing execution module to complete the core pushing operation.

[0023] The articulation of the upper articulated rod and the drive rod enables the linear motion of the drive rod to be converted into the rotational motion of the toggle link assembly, driving the link components on both sides to perform a closing or opening operation. When the drive rod pushes the upper articulated rod, through the linkage of the link components, the connection template or the movable part of the die is enabled to perform the die closing or die opening action. The lower articulated rod, as a component connecting the core pushing execution module, transmits part of the power to the core pushing execution module. While the die is being opened and closed, the lower articulated rod drives the core pushing execution module to move, realizing the synchronous progress of the die opening and closing and the core pushing operations. This connection method utilizes the mechanical characteristics of the articulated structure to achieve the effective distribution of power and the coordination of actions.

[0024] In some implementations of the first aspect, the link components include an upper link component and a lower link component distributed vertically: The upper link component includes a pair of upper links arranged at both ends of the length of the upper articulated rod, and the upper links are used to be connected to the connection template or the mounting plate; The lower link component includes a pair of lower links arranged at both ends of the length of the lower articulated rod, and the lower links are used to be connected to the connection template or the mounting plate.

[0025] The symmetrical distribution of the upper and lower connecting rod components ensures the uniformity of the force during the opening and closing of the mold, avoiding mold offset, jamming, and vibration caused by uneven force, improving the accuracy and stability of the mold opening and closing, and contributing to improving the quality and dimensional accuracy of the core molding. At the same time, this structure enhances the structural strength of the toggle component, extends the service life of the components, and improves the reliability and durability of the entire mechanism.

[0026] In some ways that can be achieved in the first aspect, the core ejection execution module includes a core ejection connecting rod, a core ejection component, and a core ejection pushing component. The core ejection connecting rod is connected to the mold action module and realizes position switching during the opening and closing of the mold. The core ejection component cooperates with the core ejection connecting rod to transmit the movement of the core ejection connecting rod to the core ejection pushing component. The core ejection pushing component acts on the mold substrate to realize the core ejection operation of the core.

[0027] This structural design of the core ejection execution module ensures the close cooperation between the core ejection operation and the mold opening and closing actions, ejects the core from the mold substrate at the appropriate time, avoids the adhesion and damage of the core in the mold, and improves the success rate of core demolding. At the same time, through reasonable structural design, the power required for the core ejection operation can be accurately and efficiently transmitted, improving the reliability and stability of the core ejection operation and ensuring the quality of the core-making products.

[0028] In some ways that can be achieved in the first aspect, the core ejection pushing component includes a core ejection rod and a guiding component. The two ends of the core ejection rod are respectively connected to the core ejection component and the guiding component; and / or, the contact between the core ejection component and the core ejection connecting rod is a rolling contact.

[0029] The rolling contact between the core ejection component and the core ejection connecting rod reduces the energy loss during the movement transmission, reduces the wear of the components, extends the service life of the components, and at the same time improves the efficiency and smoothness of the core ejection operation. The core ejection rod ensures the effective transmission of power, and the setting of the guiding component ensures the accuracy of the core ejection operation, avoids the damage of the core caused by the offset of the core ejection operation, and further improves the reliability of the core ejection operation and the quality of the core-making products.

[0030] In some ways that can be achieved in the first aspect, the guiding component includes a guiding plate and a guiding rod. The bottom of the guiding rod is fixed on the base and provides guidance for the guiding plate; and / or, the number of the guiding rods is multiple and evenly distributed at the bottom of the guiding plate. The guiding plate is connected to the core ejection rod, and a guiding spring is sleeved on the outer periphery of the guiding rod; and / or, the connection part between the guiding rod and the base adopts an embedded fastening structure.

[0031] The guide rods are fixed on the base, and multiple guide rods are evenly distributed at the bottom of the guide plate, providing multi-point support and precise guidance for the guide plate. When the core-pushing operation occurs, the guide plate moves under the guidance of the guide rods, ensuring the linearity of the core-pushing action. The guide springs are sleeved on the outer periphery of the guide rods. During the core-pushing operation, when the core-pushing component and the core-pushing rod push the guide plate, the guide springs will be compressed or stretched, playing a buffering role and absorbing the impact force during the core-pushing operation. The embedded fastening structure ensures the firm connection between the guide rods and the base, preventing the guide assembly from loosening or displacing during the core-pushing operation.

[0032] In some implementations achievable in the first aspect, the core-pushing component further includes a core-pushing plate and a core-pushing spring. The core-pushing plate is located above the guide plate and contacts the die substrate. The two ends of the core-pushing spring are respectively connected to the core-pushing plate and the die substrate.

[0033] As the component directly contacting the die substrate, during the core-pushing operation, the core-pushing plate transfers the power from the core-pushing component and the core-pushing rod to the die substrate through the elastic deformation of the core-pushing spring. When the core-pushing operation starts, the core-pushing spring is compressed or stretched, storing and releasing energy to assist the core-pushing plate in applying a core-pushing force to the die substrate to eject the core. The elastic force of the core-pushing spring can be adjusted accordingly according to the characteristics of the core and the difficulty of demolding to provide an appropriate core-pushing force.

[0034] In a second aspect, the present invention provides an application of the toggle-type mold-closing and core-pushing mechanism of a double-opening mold core-making machine, including the toggle-type mold-closing and core-pushing mechanism of the double-opening mold core-making machine as described above, which can be used on core-making equipment; the core-making equipment includes but is not limited to core-making machines, shell core-making machines, cold core-making machines, and hot core-making machines.

[0035] As a part of the core-making equipment, the toggle-type mold-closing and core-pushing mechanism of this double-opening mold core-making machine has wide applicability, enabling it to be integrated into various core-making equipment, expanding its application range, and providing an optimized mold operation solution for different types of core-making equipment. By being applied to different core-making equipment, this mechanism can exert its advantages, improve the core-making efficiency, product quality, and stability of different core-making equipment, reduce the operation cost and maintenance cost of the equipment, and bring greater economic benefits and technological progress to the core-making industry.

[0036] In summary, through unique structural design and innovative working principles, the toggle-type mold-closing and core-pushing mechanism of the double-opening mold core-making machine of the present invention demonstrates numerous advantages in mold opening and closing as well as core-pushing operations. From the various power source options and power conversion methods of the power drive module, to the precise control and coordinated actions of the mold movement module, and then to the reliable core-pushing operations of the core-pushing execution module, it effectively solves various problems existing in traditional core-making machines, improves the efficiency, quality, and reliability of core-making, has broad application prospects and significant economic value, and provides strong technical support for the development of the core-making industry.

[0037] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) As the starting point of one-way drive, the power drive module of the present invention provides the power foundation for the entire two-way mold-opening process. A single drive source avoids the complex situation that may require two or more drive sources in traditional two-way drives. This not only reduces the initial purchase cost of the equipment, but also decreases the need for controlling and coordinating multiple drive sources, reduces energy loss, improves the energy utilization efficiency, and at the same time reduces potential failure points, making the equipment more reliable and stable and improving the operational simplicity.

[0038] (2) In terms of the stability of the clamping force, through optimized mechanical structure design and precise power transmission system, it effectively ensures the high-precision positioning and stable closing of the mold during the mold-closing process. During the core-making process, the displacement deviation of the mold is controlled within an extremely small range, resulting in a leapfrog improvement in the dimensional accuracy and surface quality of the formed core, a significant increase in the product qualification rate, and an effective reduction in production costs.

[0039] (3) In the core-pushing operation link, each component of the core-pushing unit is carefully designed and coordinated to form a set of efficient and reliable core-pushing mechanisms. The close contact and smooth transmission between the core-pushing component and the core-pushing connecting rod, the stable support of the core-pushing rod, the precise guidance and effective buffering provided by the guiding rod and the guiding spring, as well as the optimized contact structure between the core-pushing plate and the mold substrate and the auxiliary effect of the core-pushing spring, jointly ensure that the core can be completely, undamaged, and smoothly ejected from the mold substrate, further improving the product yield rate and bringing higher economic benefits to the enterprise.

[0040] (4) In the core pushing execution module, the core pushing component and the core pushing connecting rod adopt a rolling contact method, and this design has significant advantages. First of all, the rolling contact method significantly reduces the friction force during the motion transmission. Compared with the traditional sliding contact, it can effectively reduce the energy loss, making the driving force required for the core pushing operation smaller, reducing the power demand for the power driving module, and improving the energy utilization efficiency. Secondly, the rolling contact can achieve a smoother motion transmission, ensuring the smoothness and coherence of the core pushing action, avoiding the jamming and vibration phenomena caused by uneven or excessive friction force, and improving the reliability and accuracy of the core pushing operation. In addition, the rolling contact reduces the wear between components, extends the service life of the core pushing component and the core pushing connecting rod, and reduces the maintenance cost of the equipment. While improving the core pushing operation efficiency, this design also helps to improve the demolding quality of the sand core, reduce the defective products caused by unstable core pushing operation, and provides a strong guarantee for high-quality core making production.

[0041] The present invention will be explained and described in detail below in conjunction with the drawings and specific embodiments. Description of the Drawings

[0042] Figure 1 It is a schematic structural diagram of the toggle type die closing and core pushing integrated device in the die closing state in the embodiment of the present invention, and it adopts an electric drive mode; Figure 2 is Figure 1 Another perspective structural diagram; Figure 3 is Figure 1 The partial structural diagram after removing the driving part in Figure 4 is Figure 3 Another perspective structural diagram; Figure 5 It is a partial enlarged structural diagram of the toggle type die closing and core pushing mechanism in the die closing state in the embodiment of the present invention; Figure 6 It is a schematic structural diagram of the toggle type die closing and core pushing integrated device in the open die state in the embodiment of the present invention, and it adopts an electric drive mode; Figure 7 It is a partial enlarged structural diagram of the toggle type die closing and core pushing mechanism in the open die state in the embodiment of the present invention; Figure 8 It is a schematic structural diagram of the toggle type die closing and core pushing integrated device in the die closing state in the embodiment of the present invention, and it adopts a pneumatic drive mode; Figure 9 It is a schematic structural diagram of the toggle type die closing and core pushing integrated device in the open die state in the embodiment of the present invention, and it adopts a pneumatic drive mode; Figure 10This is a partially enlarged structural schematic diagram of the core-pushing component in the embodiment of the present invention. Description of the Drawings

[0043] 100, base; 110, guide rail; 200, driving component; 210, speed reducer; 220, eccentric wheel; 230, driving rod; 310, toggle component; 311, mounting seat; 3111, guide groove; 312, upper connecting rod; 313, lower connecting rod; 314, connecting rod; 315, synchronizing rod; 316, connecting component; 317, sliding part; 318, upper hinge rod; 319, lower hinge rod; 320, connecting template; 321, guide bushing seat; 330, mounting plate; 331, sliding seat; 340, driving part; 410, die template; 420, core-pulling; 430, die substrate; 511, driving connecting rod; 512, core-pushing connecting rod; 513, hinge part; 5131, connecting part; 5132, hinge shaft; 5133, connecting seat; 521, core-pushing component; 522, core-pushing rod; 523, guide rod; 524, guide spring; 525, guide plate; 526, core-pushing plate; 527, core-pushing spring. Detailed Embodiment

[0044] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0045] It should be noted that when an element is referred to as "fixedly provided on" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0047] Embodiment: The embodiment of the present invention relates to a toggle-type mold-closing and core-pushing mechanism of a double-opening mold core-making machine. The technical solution of realizing double-sided mold opening and closing by relying on single-sided drive has significant advantages. In this innovative structure, only the drive device on one side of the mold can drive the double-sided mold to perform mold opening and closing operations. From the perspective of space utilization, the setting of complex mechanical structures on both sides is abandoned, greatly saving the equipment installation space, making the overall layout of the core-making machine more compact and concise, and providing the possibility for enterprises to optimize the production site configuration; in terms of maintenance, since a large number of mechanical components and connection nodes are reduced, the maintenance difficulty of the equipment is significantly reduced, and the troubleshooting and repair work are more convenient and efficient, effectively shortening the equipment downtime for maintenance and improving the overall reliability and availability of the production equipment; in terms of synchronization effect, through advanced transmission design and precise control algorithms, it is possible to ensure a high degree of synchronization of the movement of the double-sided mold, avoiding the problem of inconsistent mold opening and closing caused by the synchronization error of additional mechanisms in traditional designs, ensuring the accuracy and stability of the core-making process, improving product quality and production efficiency, and providing strong support for the technological upgrading and development of the core-making industry.

[0048] The toggle-type mold-closing and core-pushing mechanism of a double-opening mold core-making machine in this embodiment mainly consists of a power drive module, a mold action module, and a core-pushing execution module, which are specifically as follows: (I) Power drive module The power drive module is the power source of this toggle-type mold-closing and core-pushing mechanism, and is composed of a drive component 200, an eccentric wheel 220, and a drive rod 230.

[0049] The drive component 200 provides various options for realizing diverse power supplies for the mechanism, including servo motors, stepper motors, reduction motors, cylinders, and hydraulic cylinders. Different types of drive components 200 exhibit unique performance advantages in core-making operations. Taking the servo motor as an example, it has high-precision control characteristics and can precisely control the rotational speed, torque, and rotation angle according to a preset program, providing precise power output for the core-making process. Through precise control of the servo motor, the power parameters can be flexibly adjusted according to different stages and process requirements of core-making to ensure the power accuracy of mold opening and closing and core-pushing operations. The stepper motor has precise stepping characteristics and can decompose the rotational motion into discrete step lengths, which is suitable for core-making scenarios that require precise position control to ensure the position accuracy of the core-making process. The reduction motor can adjust the output rotational speed and torque through a reduction device and plays an important role in core-making operations that require large torque.

[0050] The cylinder and the hydraulic cylinder provide linear driving forces for the mechanism. They are characterized by stable and powerful thrust or pulling forces and exhibit excellent performance in some occasions that require large linear forces to drive the mold action or core-pushing operation. For example, when dealing with large molds or high-viscosity core sand, they can provide sufficient power guarantee.

[0051] The eccentric wheel 220 is connected to the driving component 200 and realizes eccentric rotation under the drive of the driving component 200. The eccentricity of the eccentric wheel 220 is a key parameter and can be adjusted according to the actual core-making requirements. The adjustment method can be to replace the eccentric wheel 220 with different specifications, or to use an eccentric wheel 220 with a structure for adjustable eccentricity. This flexibility enables the mechanism to precisely adjust the opening and closing actions of the mold according to different mold opening and closing strokes, speed requirements, and core size. For example, in the case of a need for a larger mold opening and closing amplitude, an eccentric wheel 220 with a larger eccentricity can be selected; for a small mold that requires a fine opening and closing action, an eccentric wheel 220 with a smaller eccentricity can be chosen, thereby achieving flexible customization of the mold opening and closing actions.

[0052] The driving rod 230, as a key component for power transmission, is connected to the eccentric wheel 220 at one end and to the mold action module at the other end. When the eccentric wheel 220 rotates eccentrically, the driving rod 230 converts this rotational motion into a linear reciprocating motion. In this process, the design of the driving rod 230 ensures the efficiency and stability of power transmission. Through an accurate transmission ratio and a reliable connection method, power loss and energy loss during the transmission process are avoided, ensuring that the power transmission from the driving component 200 to the mold action module is coherent and efficient, providing continuous and stable power support for subsequent mold opening and closing and core ejection operations.

[0053] (2) Mold action module The mold action module consists of a toggle link assembly 310, a connecting template 320, a mounting plate 330, and a driving part 340. They cooperate with each other to jointly achieve the precise opening and closing actions of the mold.

[0054] The toggle link assembly 310 is the core component of the mold action module, including two sets of link components symmetrically distributed, an upper hinge rod 318, and a lower hinge rod 319. This symmetrical structure ensures the uniformity of power transmission and the balance of mold opening and closing actions. During operation, one set of link components is connected to the connecting template 320 or the movable part of the mold on one side, and the other set is connected to the mounting plate 330. The upper hinge rod 318 is hinged to the driving rod 230 to receive the power transmitted from the power driving module.

[0055] When the driving component 200 is started, the power is transmitted to the upper hinge rod 318 through the driving rod 230, and the upper hinge rod 318 drives the connecting rod component to move, so as to realize the folding or unfolding of the connecting rod component, and then promotes the opening and closing of the connecting template 320 or the movable part of the mold. This structural design ensures the uniformity of force during the opening and closing of the mold, avoids the deviation and jamming caused by uneven force, and thus significantly improves the accuracy and stability of the opening and closing of the core making mold, which helps to produce high-quality sand cores.

[0056] The lower hinge rod 319 is connected to the core ejection execution module, and plays a key role in power transmission and coordination. When the mold is opened and closed, the lower hinge rod 319 transmits power to the core ejection execution module, ensuring the synchronization of mold opening and closing and core ejection operations, and avoiding the influence of the uncoordinated actions of the two on the core making effect. This synchronous coordination mechanism ensures the continuity and consistency of the core making process, and avoids the sand core molding defects that may be caused by uncoordinated actions.

[0057] The connecting template 320 is provided with a through hole for the driving member 340 to pass through, one side of which is connected to the driving member 340 and the other side is connected to the movable part of the mold. The number and arrangement of the driving members 340 can be reasonably configured according to the specific structure and power requirements of the mold.

[0058] The connecting template 320 is also equipped with a guide sleeve seat 321, and the mounting plate 330 is provided with a sliding seat 331, and the two slide linearly along the guide rail 110 of the base 100. The guide sleeve seat 321 provides precise guidance and support for the connecting template 320, ensuring that the connecting template 320 moves accurately linearly along the guide rail 110 during the opening and closing of the mold, reducing friction and wear during the movement, and improving the movement accuracy and service life of the connecting template 320. The sliding seat 331 provides stable sliding support for the mounting plate 330, ensuring the stability and reliability of the mold opening and closing action, preventing unstable phenomena such as shaking and offset during the opening and closing of the mold, and providing a reliable structural foundation for the core making process.

[0059] (III) Top core execution module The core pushing execution module is composed of a core pushing connecting rod 512, a core pushing component 521, and a core pushing component, and is a key component for realizing the core pushing operation.

[0060] The core-pushing connecting rod 512 is connected to the die motion module, and its position is dynamically adjusted during the opening and closing process of the die to achieve the transmission and conversion of motion. The core-pushing component 521 cooperates with the core-pushing connecting rod 512 in a rolling contact manner. This rolling contact method has the advantage of low friction, reducing the energy loss during the motion transmission and ensuring the smoothness and efficiency of the motion transmission. During the core-pushing operation, the core-pushing component 521 can stably and effectively transmit the motion from the core-pushing connecting rod 512 to the core-pushing actuator component.

[0061] The core-pushing actuator component includes a core-pushing rod 522, a guiding assembly, a core-pushing plate 526, and a core-pushing spring 527. The core-pushing rod 522 is an important component for motion transmission, and its two ends are respectively connected to the core-pushing component 521 and the guiding assembly. The guiding assembly includes a guiding plate 525 and guiding rods 523. The bottom of the guiding rod 523 is firmly fixed to the base 100, and multiple guiding rods 523 are evenly distributed at the bottom of the guiding plate 525, providing precise guiding and positioning functions for the guiding plate 525.

[0062] A guiding spring 524 is sleeved on the outer periphery of the guiding rod 523. During the core-pushing operation, the guiding spring 524 can absorb the impact force generated by the core-pushing operation, playing a buffering and protective role, preventing damage to the mechanism components caused by the instantaneous impact of the core-pushing operation, and ensuring the safety and reliability of the core-pushing operation. The guiding rod 523 is connected to the base 100 by an embedded fastening structure. This connection method ensures the stability of the guiding assembly, prevents the displacement or loosening of the guiding assembly during the core-pushing operation, and guarantees the accuracy and stability of the core-pushing operation.

[0063] The core-pushing plate 526 is located above the guiding plate 525 and is in close contact with the die base plate 430. The two ends of the core-pushing spring 527 are respectively connected to the core-pushing plate 526 and the die base plate 430. During the die opening process, the core-pushing operation proceeds according to the following process: The die motion module drives the core-pushing execution module to move. The core-pushing component 521 transmits the motion to the core-pushing rod 522. The core-pushing rod 522 drives the core-pushing plate 526 to move. The core-pushing spring 527 applies a pushing force to the die base plate 430 by elastic deformation to assist the core-pushing plate 526, ejecting the core from the die base plate 430. The elastic characteristics of the core-pushing spring 527 can be adjusted according to the specific size, weight, and demolding difficulty of the core, ensuring effective core demolding under different core-making conditions and improving the adaptability and success rate of the core-pushing operation.

[0064] When the toggle-type clamping and core-pushing mechanism of the double-opening die core-making machine is operating, each module works together. The following is the detailed working principle: First, the power drive module starts, and the drive component 200 begins to work, generating corresponding power according to its type. For the case of motor drive (such as servo motor, stepper motor, reduction motor), the motor's rotational motion drives the eccentric wheel 220 to perform eccentric rotation, and the eccentric wheel 220 converts the rotational motion into a linear reciprocating motion through the drive rod 230; for the case of cylinder or hydraulic cylinder drive, the drive rod 230 directly obtains linear power.

[0065] The obtained linear power is transmitted to the upper hinge rod 318 of the toggle lever assembly 310 of the die action module, and the upper hinge rod 318 drives the connecting rod component to move, prompting the connecting template 320 or the movable part of the die to perform mold closing and opening operations. During the mold closing operation, the driving member 340 pushes one side of the connecting template 320 to move along the guide rail 110 towards the other side of the connecting template 320 to close the die; during the mold opening operation, it is the opposite, and the movable part of the die is opened under the drive of the driving member 340.

[0066] Meanwhile, the lower hinge rod 319 transmits the power to the core pushing execution module. The core pushing connecting rod 512 drives the core pushing component 521 to move as the position changes during the mold closing and opening process of the die. The core pushing component 521 transmits the motion to the core pushing member through rolling contact, and the core pushing rod 522 transmits the motion to the core pushing plate 526. When the die is opened, the core pushing spring 527 assists the core pushing plate 526 to apply an upward pushing force to the die substrate 430. At the same time, under the guarantee of the guiding assembly composed of the guiding rod 523 and the guiding spring 524, the core pushing operation accurately and stably ejects the core from the die substrate 430. Throughout the process, each module closely cooperates to ensure the accuracy, stability, and coherence of the core making process.

[0067] The above has made an exemplary description of the present invention in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A toggle-type mold closing and core ejecting mechanism for a double-opening mold core making machine, characterized in that: It includes power drive module, mold action module and core ejection execution module; The power drive module provides power to enable the mold action module to realize the opening and closing action of the mold, and synchronously drives the core pushing execution module to operate. The core pushing execution module completes the core pushing operation while opening the mold, thereby realizing the coordinated control of the mold opening and closing and the core pushing operation during the core making process; The mold action module is arranged on one side of the mold, and realizes the two-way opening and closing movement of the mold under the drive of the power drive module.

2. The toggle-type mold clamping and core-pushing mechanism of the double-opening mold core-making machine according to claim 1, characterized in that: The mold action module includes: The elbow lever assembly (310) comprises two groups of connecting rod components which are symmetrically distributed, one group of connecting rod components being used to connect the mold with a connecting template (320) or a movable part of the mold on one side; the other group of connecting rod components being used to connect with a mounting plate (330) and to push the connecting template (320) or the movable part of the mold on the other side to perform linear motion via a driving member (340) connected to the mounting plate (330).

3. The toggle-type mold clamping and core-pushing mechanism of the double-opening mold core-making machine according to claim 2, characterized in that: A through hole for the driving member (340) to pass through is provided on the connection template (320) on one side, and the connection template (320) on the other side is connected to an end of the driving member (340) away from the mounting plate (330); and / or, the number of the driving member (340) is not limited to one; And / or, the connecting template (320) and the mounting plate (330) are respectively provided with a guide sleeve seat (321) and a sliding seat (331), and the guide sleeve seat (321) and the sliding seat (331) slide linearly along the guide rail (110) of the base (100).

4. The toggle-type mold clamping and core-pushing mechanism of the double-opening mold core-making machine according to claim 1, characterized in that: The power drive module comprises a drive component (200), an eccentric wheel (220) and a drive rod (230); the eccentric wheel (220) rotates eccentrically under the drive of the drive component (200), and converts the rotational motion into linear reciprocating motion through the drive rod (230); the drive rod (230) is connected to the drive component of the mold action module; The driving component (200) includes but is not limited to a servo motor, a stepper motor or a reduction motor.

5. The toggle-type mold clamping and core-pushing mechanism of the double-opening mold core-making machine according to claim 4, characterized in that: The eccentricity of the eccentric wheel (220) is adjustable, and the adjustment method is to replace the eccentric wheel (220) with different specifications or adopt an eccentric wheel (220) structure with adjustable eccentricity, so as to control the stroke of the driving rod (230).

6. The toggle-type mold clamping and core-pushing mechanism of the double-opening mold core-making machine according to claim 1, characterized in that: The power drive module comprises a drive component (200) and a drive rod (230); the drive rod (230) is driven by the drive component (200) to drive the mold action module to perform linear motion, thereby realizing a two-way opening and closing action of the mold; And / or, the driving component (200) includes but is not limited to a pneumatic cylinder and a hydraulic cylinder.

7. The toggle-type mold clamping and core-pushing mechanism of the double-opening mold core-making machine according to claim 3, characterized in that: The toggle lever assembly (310) further comprises: an upper hinged rod (318), the upper hinged rod (318) being hingedly connected to the driving rod (230) and used for receiving power transmitted by the driving component (200) and realizing a mold closing or mold opening action by driving the movement of the connecting rod component; The lower hinged rod (319) is connected to the core pushing execution module and is used to drive the core pushing execution module to complete the core pushing operation.

8. The toggle-type mold clamping and core-pushing mechanism of the double-opening mold core-making machine according to claim 7, characterized in that: The connecting rod component includes an upper connecting rod component and a lower connecting rod component which are distributed upward and downward: The upper connecting rod component comprises a pair of upper connecting rods (312) arranged at both ends of the length of the upper hinge rod (318), and the upper connecting rods (312) are used to be connected to a connecting template (320) or a mounting plate (330); The lower connecting rod component comprises a pair of lower connecting rods (313) arranged at both ends of the length of the lower hinge rod (319), and the lower connecting rods (313) are used to be connected to a connecting template (320) or a mounting plate (330).

9. The toggle-type mold clamping and core-pushing mechanism of the double-opening mold core-making machine according to any one of claims 1 to 8, characterized in that: The core ejection execution module comprises a core ejection connecting rod (512), a core ejection component (521) and a core ejection pushing component. The core ejection connecting rod (512) is connected to the mold action module to realize position switching during the mold opening and closing process. The core ejection component (521) cooperates with the core ejection connecting rod (512) to transmit the movement of the core ejection connecting rod (512) to the core ejection pushing component. The core ejection pushing component acts on the mold base plate (430) to realize the ejection operation of the sand core.

10. The toggle-type mold clamping and core-pushing mechanism of the double-opening mold core-making machine according to claim 9, characterized in that: The core pushing component comprises a core pushing rod (522) and a guide assembly, and two ends of the core pushing rod (522) are respectively connected to the core pushing component (521) and the guide assembly; And / or, the top core component (521) and the top core connecting rod (512) are in rolling contact.

11. The toggle-type mold clamping and core-pushing mechanism of the double-opening mold core-making machine according to claim 10, characterized in that: The guide assembly comprises a guide plate (525) and a guide rod (523); the bottom of the guide rod (523) is fixed on the base (100) and provides guidance for the guide plate (525); And / or, the number of the guide rods (523) is multiple and evenly distributed at the bottom of the guide plate (525), the guide plate (525) is connected to the top core rod (522), and the outer circumference of the guide rod (523) is sleeved with a guide spring (524); And / or, the connection portion between the guide rod (523) and the base (100) adopts an embedded fastening structure.

12. The toggle-type mold clamping and core-pushing mechanism of the double-opening mold core-making machine according to claim 10, characterized in that: The top core pushing component further comprises a top core plate (526) and a top core spring (527); the top core plate (526) is located above the guide plate (525) and in contact with the mold base plate (430); and two ends of the top core spring (527) are respectively connected to the top core plate (526) and the mold base plate (430).

13. An application of a toggle-type mold clamping and core-pushing mechanism for a double-opening mold core-making machine, characterized in that: A toggle-type mold clamping and core-pushing mechanism for a double-opening mold core-making machine according to any one of claims 1 to 12, which can be used in core-making equipment; The core making equipment includes but is not limited to a core making machine, a core shooting machine, a cold core machine and a hot core machine.

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