Electric clamp type die assembly and cam ejector core integrated device and production method and application thereof

Abstract

The invention discloses an electric clamp type mold closing and cam core ejecting integrated device and a production method and application thereof, and belongs to the technical field of core making machine molds. The mold opening and closing mechanism comprises a mold opening and closing unit, and the mold opening and closing unit is of a clamp type structure and used for cooperating with a movable part of a mold to achieve mold opening and closing actions. The core ejection unit is used for being in contact with the core ejection assembly and applying ejection force; the driving unit comprises a driving motor, and when the driving motor drives the core ejecting unit to make contact with the core ejecting assembly to achieve core ejecting operation, the driving motor synchronously drives the mold opening and closing unit to achieve mold opening action. And the distance adjusting unit is connected with the movable part of the mold and is used for finely adjusting the minimum mold closing distance after mold closing. A high-efficiency, environment-friendly and high-flexibility driving mode is adopted to replace a traditional oil cylinder and air cylinder driving mode, the environmental pollution problems such as oil leakage and air leakage are avoided, flexible controllability of output movement is achieved, and the adjusting flexibility is improved.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of production equipment of core making machines for casting, and specifically relates to an electric clamp type mold clamping and cam core integration device and a production method and application thereof. Background Art

[0002] In the related manufacturing fields such as casting core making machines and injection molding equipment, the traditional oil cylinder and air cylinder drive methods used in mold opening and closing and core ejection devices have long dominated. However, as the manufacturing industry continues to increase its requirements for production efficiency, product quality and environmental protection, its inherent disadvantages have become increasingly prominent, becoming a bottleneck for the further development of the industry.

[0003] From an environmental perspective, the limited sealing performance of oil cylinders often leads to oil leakage, while gas cylinders are prone to gas leakage. This not only leads to serious oil and gas pollution in the workplace, increasing the manpower and material investment in cleaning and maintenance, but also may cause potential quality risks due to the contact between the leaked materials and production materials or products, bringing hidden dangers to safe production.

[0004] In terms of performance, the output characteristics of oil and air cylinders are rigid and fixed, making it difficult to flexibly adapt to the diverse production process requirements. The clamping force stability is poor. During the core making or injection molding process, the mold clamping accuracy fluctuates greatly due to pressure fluctuations, resulting in frequent defects such as flash, lack of material, loose sand cores, and uneven surfaces. The scrap rate remains high, seriously eroding the company's profit margins and reducing market competitiveness.

[0005] Furthermore, the traditional drive device has a complicated structure, and numerous pipelines, valves and auxiliary equipment occupy a large amount of production space, increasing the space cost of the enterprise. At the same time, its action response is slow, and there is a significant time delay from receiving instructions to executing actions, which greatly slows down the production rhythm and cannot meet the high-speed and efficient production rhythm of modern manufacturing. It is difficult to meet customer needs in terms of timeliness of order delivery, which limits the company's capacity improvement and business expansion.

[0006] In summary, traditional oil and air cylinder driven mold devices can no longer meet the stringent requirements of modern manufacturing. A new technical solution is urgently needed to break the deadlock and push the industry towards a new stage of intelligent, efficient and green development. Summary of the invention

[0007] In order to solve the above-mentioned technical problems, one of the purposes of the present invention is to provide an electric clamp-type mold clamping and cam core integrated device and its production method and application, which adopts an efficient, environmentally friendly and highly flexible driving mode to replace the traditional oil cylinder and air cylinder drive, avoid environmental pollution problems such as oil leakage and air leakage, and realize flexible controllable output movement, thereby improving the flexibility of adjustment. In addition, it overcomes the defect that traditional mechanisms are difficult to accurately adjust the minimum distance of mold clamping, ensures that the mold meets the micron-level precision requirements during the mold clamping process, and thus ensures the product molding quality.

[0008] In order to solve the above technical problems, the technical solution adopted by the present invention is: In a first aspect, the present invention provides an electric clamp type mold clamping and cam core integrated device, comprising: A mold opening and closing unit, which is a clamp-type structure and is used to cooperate with the movable part of the mold to realize the opening and closing actions; A core push unit, the core push unit is used to contact with the core push assembly and apply a push force; A driving unit, wherein the driving unit comprises a driving motor, and when the driving motor drives the top core unit to contact the top core assembly to realize the top core operation, the driving motor synchronously drives the mold opening and closing unit to realize the mold opening action; When the driving motor drives the top core unit to separate from the top core assembly, the mold opening and closing unit is synchronously driven to realize the mold closing action; The distance adjusting unit is connected to the movable part of the mold and is used to control the movable part of the mold to further move linearly along the mold opening and closing direction after the mold is closed, so as to achieve fine adjustment of the minimum distance of the mold closing.

[0009] In a manner that can be implemented in the first aspect, the distance adjustment unit includes: A distance adjusting component, which is connected to the movable part of the mold and is used to adjust the minimum distance of mold closing; A driving component, comprising an adjustment motor and an output shaft, which is used to drive the distance adjustment component to perform a linear reciprocating motion along the mold closing direction; And / or, the distance adjusting component is at least one and is arranged outside the movable part of the mold; And / or, the distance adjusting component is connected to the movable part of the mold via an opening and closing template.

[0010] In a manner that can be implemented in the first aspect, the distance adjusting component includes: An adjusting nut, the adjusting nut being used to be connected to a movable part of the mold or an opening and closing mold plate; The adjusting nut has an internal thread section and an external thread section, and a threaded hole is provided on the relatively outer side of the movable part of the mold or the opening and closing template, and a threaded section meshing with the external thread section is provided in the threaded hole; The outer circumference of the adjusting shaft is provided with a threaded section meshing with the internal thread, and the adjusting nut is sleeved on the outer circumference of the adjusting shaft; A synchronization unit is used to realize the synchronous rotation of the output shaft and the adjustment shaft.

[0011] In a manner that can be implemented in the first aspect, the distance adjustment unit further includes: A locking component, which is used to apply a locking force to the movable part of the mold to achieve tight locking of the mold; And / or, the locking component comprises a locking cylinder and a locking screw, and the locking screw is used to contact with the movable part of the mold or the relative outer side surface of the opening and closing template and apply a locking force; The locking cylinder is used to drive the locking screw to perform linear reciprocating motion along the mold opening and closing direction; And / or, the number of the locking component is at least one.

[0012] In an achievable manner of the first aspect, the top core unit includes: A top core cam, wherein the top core cam has a mold opening position and a mold closing position; When the ejector cam is located at the mold opening position, the ejector cam contacts the ejector assembly and applies an ejection force to cause the sand core to be ejected from the mold; When the ejector cam is located at the mold closing position, the ejector cam is disengaged from the ejector assembly to ensure that the mold is firmly closed, thereby achieving smooth switching between ejection of the sand core and closing of the mold.

[0013] In an achievable manner of the first aspect, the top core unit further includes: A cam plate, one end surface of which is used to contact the top core cam and receive the power transmitted by the top core cam, and a top core rod is installed on the cam plate; The core ejector plate is firmly connected to the core ejector rod and fits tightly with the mold base plate. During the core ejection process, the core ejector rod transmits power to ensure that the sand core is ejected from the mold base plate intactly and without damage.

[0014] In an achievable manner of the first aspect, the top core unit further includes: A guide plate, the guide plate is located between the cam plate and the top core plate, and is provided with a through hole for the top core rod to pass through in a straight line direction, so as to provide a stable guide for the top core action; And / or, the cam plate is equipped with a return spring, one end of the return spring is tightly connected to the cam plate, and the other end is firmly connected to the guide plate; After the mold is closed, at the moment when the ejector cam separates from the cam plate, the return spring rapidly releases energy by virtue of its own elastic potential energy, and pulls the cam plate to smoothly return to the initial standby position, so as to prepare for the next ejector cycle operation.

[0015] In a manner that can be implemented in the first aspect, the mold opening and closing unit includes: A multi-link assembly, wherein the multi-link assembly is a pair, symmetrically arranged on both sides of the top core cam, and the pair of multi-link assemblies is a clamp-type structure.

[0016] In a manner that can be realized in the first aspect, when the top core cam rotates to the mold opening position, the double-sided multi-link assembly is synchronously driven to convert the rotational force linearly, and the movable part of the pulling mold is displaced toward each other along a preset straight line to complete the mold opening; During the process of the top core cam reversing to the mold closing position, the multi-link assembly is synchronously driven, and the multi-link assembly cooperates to transmit the contraction force, driving the movable part of the mold to achieve precise alignment along a predetermined straight line.

[0017] In a manner that can be implemented in the first aspect, the multi-link assembly includes: A driving connecting rod, one end of which is rotatably connected to the top core cam and is used to receive and transmit the rotational power of the top core cam; The mold opening and closing tie rod has one end firmly connected to the movable part of the mold to transmit power and drive the movable part of the mold to realize the mold opening and closing action, ensuring the accuracy and repeatability of the mold movement; And / or, in the mold closing state, the mold opening and closing pull rods and the driving connecting rods approach a horizontal position in a specific first direction, and cooperate with the rocker arm lever to construct a stable force transmission structure, providing a strong, continuous and stable clamping force for the mold, ensuring that the mold is tightly locked.

[0018] In a manner that can be implemented in the first aspect, the multi-link assembly further includes: The rocker lever has two ends hinged to the driving connecting rod and the mold opening and closing rod respectively; And / or, the geometric shapes of the driving connecting rod, the rocker lever and the mold opening and closing tie rod are not limited to rod-shaped, and may be tubular or plate-shaped structures; Alternatively, it can be customized into curved, wavy and other regular or irregular shapes according to actual working conditions, and it is only necessary to ensure that the multi-link assembly composed of the driving connecting rods, rocker levers and mold opening and closing pull rods on both sides can accurately realize the clamp-like opening and closing action and stable force transmission function.

[0019] In a manner that can be implemented in the first aspect, the distance adjustment unit further includes: A connecting seat, the connecting seat is used to install the adjusting shaft and the locking component, and the connecting seat is provided with a through hole for the locking screw to pass through; And / or, a mounting seat is provided on the connecting seat, and the mounting seat is connected to the multi-link assembly so that the mounting seat and the multi-link assembly move in coordination.

[0020] In a manner that can be realized in the first aspect, the multi-link assembly is firmly connected to the movable part of the mold by means of an opening and closing template, and a guide sleeve seat is provided at the bottom of the opening and closing template; The guide sleeve seat is slidably mounted on the guide rail and slides linearly along the length direction of the guide rail to provide guidance for the opening and closing actions of the movable part of the mold.

[0021] In a second aspect, the present invention provides a method for producing an electric clamp-type mold clamping and cam core integrated device, using the electric clamp-type mold clamping and cam core integrated device, and the production method comprises the following steps: (1) Mold closing action: Start the drive unit to drive the mold opening and closing units to coordinate and control the movable parts of the mold to achieve precise alignment along a predetermined straight line to complete the mold closing operation; (2) Adjustment of the minimum mold closing distance: After mold closing, start the distance adjustment unit, and the distance adjustment component controls the movable part of the mold to further move in a straight line along the mold opening and closing direction to achieve fine adjustment of the minimum mold closing distance; (3) Locking action: When the minimum mold closing distance is adjusted to the appropriate range, the locking component is activated to apply locking force to the movable part of the mold to achieve tight locking of the mold; (4) Mold opening and core pushing action: the driving unit is started again to drive the core pushing unit to contact the core pushing assembly to realize the core pushing operation, and the mold opening and closing unit is synchronously driven to realize the mold opening action; The above steps (1) to (4) are repeated repeatedly to achieve precise switching between core ejection and mold closing, thus ensuring the orderly progress of the core making process.

[0022] In a manner that can be realized in the second aspect, when the top core cam in the top core unit rotates to the mold opening position, the mold opening and closing unit is synchronously driven to convert the rotational force linearly, and the movable part of the pulling mold moves along a preset straight line to realize the opening of the mold cavity, thereby completing the mold opening action; When the top core cam rotates to the mold closing position, the mold opening and closing units are synchronously driven to pull the movable part of the mold to move along a predetermined straight line to achieve precise alignment of the mold and complete the mold closing action.

[0023] In a third aspect, the present invention provides an application of an electric clamp-type mold clamping and cam core integrated device, including the above-mentioned electric clamp-type mold clamping and cam core integrated device, which can be used in core making equipment or injection molding 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.

[0024] Compared with the prior art, the present invention has the following beneficial effects: (1) Improved drive performance: The use of a reduction motor or servo motor with a reducer drive successfully solves the environmental pollution problem caused by traditional oil cylinder and cylinder drives. The output motion is flexible and controllable, and the action is precisely positioned. It can be controlled based on the torque and numerical value of the servo motor. There is no need for a travel switch. It is easy to maintain and flexible to adjust, effectively improving production efficiency.

[0025] (2) Improved mold closing accuracy: Through the innovative design of the distance adjustment unit, including the distance adjustment component, drive component and synchronization unit, the minimum mold closing distance can be accurately fine-tuned after mold closing, so that the mold closing accuracy reaches the micron level standard, meeting the strict requirements of different molds for mold closing accuracy and ensuring the product molding quality.

[0026] (3) Optimization of core ejection effect: The special design of the core ejection cam in the core ejection unit and its synergy with the cam plate, core ejection rod, core ejection plate and other components ensure that the sand core is intact and undamaged during the ejection process. The irregular circular structure of the cam core ejection part can adaptively adjust the core ejection force according to the sand core molding conditions, significantly improving the sand core demolding success rate and finished product quality, and reducing the scrap output rate.

[0027] (4) The overall structure is compact and stable: The optimization of the connection between the multi-link assembly and the mold and the flexible design of the geometric shapes of each component allow the drive unit to be arranged under the mold, saving installation space and making the overall equipment structure more compact. At the same time, in the mold closing state, the multi-link assembly can provide a strong and stable clamping force to ensure that the mold remains stable under high pressure and high temperature conditions and maintain micron-level mold closing accuracy.

[0028] (5) Wide application and strong adaptability: The integrated device can be applied to core making equipment (such as core making machines, core shooting machines, cold core machines, hot core machines) and injection molding equipment. By adaptively adjusting the parameters and materials of each component of the spacing unit, it can meet the needs of different equipment and molds, effectively improving the applicability and competitiveness of the equipment in industrial production, and providing high-quality and high-efficiency production solutions for modern manufacturing.

[0029] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the electric clamp type mold clamping and cam core integrated device in the mold opening state in the embodiment of the present invention, wherein the distance adjustment unit is a pair, which is symmetrically arranged on the outer side of the movable part of the mold on both sides; Figure 2 for Figure 1 Schematic diagram of the main structure; Figure 3It is a schematic diagram of the structure of the electric clamp type mold clamping and cam core integrated device in the mold opening state in the embodiment of the present invention, wherein there is one distance adjustment component, which is arranged outside the movable part of the mold on one side; Figure 4 for Figure 3 The structural diagram in which the movable mold and the opening and closing template are removed; Figure 5 It is a schematic structural diagram of the electric clamp type mold clamping and cam core integrated device in the mold clamping state according to an embodiment of the present invention; Figure 6 for Figure 5 Schematic diagram of the main structure; Figure 7 It is a partial enlarged structural schematic diagram of the top core unit in an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of a distance adjustment unit in an embodiment of the present invention; Fig. 9 This is a schematic diagram of the second structure of the distance adjustment unit in an embodiment of the present invention, in which only a single locking component is shown; Fig.10 This is a third structural schematic diagram of the distance adjustment unit in an embodiment of the present invention, in which there is no locking component. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 100, base; 110, guide rail; 120, avoidance groove; 200, driving motor; 210, speed reducer; 220, driving shaft; 300, mold opening and closing unit; 311, driving connecting rod; 312, rocker lever; 313, mold opening and closing pull rod; 320, mold opening and closing; 321, guide sleeve seat; 322, guide groove; 330, eccentric cam; 331, cam plate; 332, guide rod; 333, return spring; 334, core rod; 335, guide plate; 336, core plate; 410, movable mold; 420, core pulling; 430, mold base plate; 500, pitch adjustment unit; 510, adjustment motor; 511, motor seat; 512, output shaft; 520, connecting seat; 531, locking cylinder; 532, locking screw; 541, driving pulley; 542, synchronous belt; 543, driven pulley; 544, adjustment nut. DETAILED DESCRIPTION

[0032] To facilitate 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, but 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 content disclosed in the present invention more thorough and comprehensive.

[0033] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field to which the present invention belongs. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0035] Embodiment: The electric clamp type mold clamping and cam core pushing integrated device of the embodiment of the present invention comprises a mold opening and closing unit, a core pushing unit and a distance adjustment unit 500: The mold opening and closing unit includes a pair of multi-link assemblies, which are symmetrically arranged on both sides of the top core cam 330 to form a stable clamp-type structure for coordinating the opening and closing of the movable part of the mold. Figure 1-10 As shown, the movable part of the mold in this embodiment is the movable mold 410.

[0036] The ejector unit includes an ejector cam 330 , and the ejector cam 330 has a mold opening position and a mold closing position.

[0037] refer to Figure 1 and Figure 2 As shown in , when the top core cam 330 is located at the mold opening position, the top core cam 330 contacts the top core assembly and applies an ejection force to cause the sand core to be ejected from the mold, making it convenient for manual / machine grasping of the sand core; refer to Figure 3 and Figure 4 As shown in , when the top core cam 330 is located at the mold closing position, the top core cam 330 is disengaged from the top core assembly to ensure that the mold closing state is stable, thereby achieving precise switching between sand core ejection and mold closing, and ensuring the orderly progress of the core making process.

[0038] During the mold opening stage, the top core cam 330 rotates to the mold opening position, and the strong power generated, through the optimized transmission path, synchronously and accurately drives the double-sided multi-link components to operate efficiently and collaboratively. After the rotational force is linearly converted, the movable part of the pulling mold is displaced toward each other along the preset straight line, realizing fast and smooth mold opening.

[0039] The carefully designed mold opening and closing positions of the ejector cam 330 are the starting point for achieving efficient operation of the entire mechanism. At the moment of mold opening, the ejector cam 330 accurately touches the ejector assembly and cleverly applies precise ejection force, allowing the sand core to smoothly separate from the mold cavity, creating favorable conditions for seamless connection of subsequent production links; in the mold closing stage, the ejector cam 330 and the ejector assembly are smoothly separated, and the mold is tightly closed, laying a solid foundation for the accurate molding of the sand core in a stable mold cavity environment.

[0040] Specifically, in this embodiment, during the mold closing stage, the top core cam 330 reverses to the mold closing position, the multi-link assembly responds accurately, and the components cooperate to transmit the contraction force, pulling the movable part of the mold to achieve precise alignment along a predetermined straight line, ensuring that the mold closing accuracy reaches the micron level standard. This collaborative drive mode provides a solid motion foundation and power guarantee for the entire process of sand core molding and demolding.

[0041] In order to achieve the refined design and functional coordination of multi-link components, specifically, Figure 1 As shown, the multi-link assembly in this embodiment includes: The driving connecting rod 311, one end of which is connected to the rotating pair of the top core cam 330, ensures efficient, low-loss and non-stuck power transmission. Its structural strength and material properties have been strictly optimized and calculated to withstand high-intensity workloads and are used to receive and transmit the rotational power of the top core cam 330; The mold opening and closing pull rod 313 has one end connected to the movable part of the mold to transmit power and drive the movable part of the mold to realize the mold opening and closing action, thereby ensuring the accuracy and repeatability of the mold movement; Furthermore, in the mold closing state, the mold opening and closing pull rod 313 and the driving connecting rod 311 are nearly in an ideal horizontal state in the horizontal direction due to exquisite design and precise assembly, and together with the rocker arm lever 312, they form a high-strength and stable triangular structure, providing the mold with a continuous and stable clamping force of thousands of Newtons or even higher, ensuring that the mold remains motionless under high-pressure and high-temperature sand core molding conditions, and firmly maintains micron-level mold closing accuracy.

[0042] The multi-link assembly further includes a rocker lever 312 , which serves as a key hub for force transmission and motion coordination, and whose two ends are respectively hinged to the driving connecting rod 311 and the mold opening and closing pull rod 313 .

[0043] In practice, the geometric shapes of the driving connecting rod 311, the rocker lever 312 and the opening and closing mold pull rod 313 are not limited to rod-shaped, but can be tubular or plate-shaped; or, they can be customized into curved, wavy and other regular or irregular shapes according to actual working conditions. It is only necessary to ensure that the multi-link assembly composed of the driving connecting rod 311, the rocker lever 312 and the opening and closing mold pull rod 313 on both sides can accurately realize the clamp-like opening and closing action and stable force transmission function.

[0044] The two ends of the rocker lever 312 are provided with mounting grooves, and the mounting grooves are adapted to various types of hinges. In addition, the base 100 is provided with an avoidance groove 120 at a position corresponding to the rocker lever 312, which is used to accommodate the hinged movement of the rocker lever 312. Figure 1 In the position shown in the figure, the two ends of the rocker lever 312 pass through the avoidance groove 120 and are respectively hinged to the driving connecting rod 311 and the mold opening and closing rod 313. Compared with the traditional pneumatic or hydraulic drive mold opening and closing structure, which requires the driving components to be arranged on both sides of the mold, the driving unit in this embodiment can be arranged under the mold, which greatly saves the installation space and makes the overall equipment structure more compact.

[0045] When a rotating shaft is used as a hinged part, an annular sleeve is arranged at the hinged end of the driving connecting rod 311 or the opening and closing mold pull rod 313 and the rocker lever 312, and the annular sleeve and the rotating shaft adopt a clearance fit or a high-precision rolling bearing fit mode; or, a precise hinge hole is designed at the hinged end of the driving connecting rod 311 or the opening and closing mold pull rod 313 and the rocker lever 312, and the hinge hole wall is tightly fitted with the rotating shaft.

[0046] When a sleeve is used as a hinged member, a hinged shaft is provided at the hinged end of the driving connecting rod 311 or the mold opening and closing pull rod 313, and the internal cavity of the sleeve is used to accommodate the hinged shaft.

[0047] Please refer to it carefully Figure 1 As shown in the figure, in this embodiment, the multi-link assembly and the movable part of the mold are firmly connected by means of an opening and closing template 320. A guide sleeve seat 321 is provided at the bottom of the opening and closing template 320. The guide sleeve seat 321 is slidably sleeved on the guide rail 110 to form a high-precision sliding guide module, and slides linearly along the length direction of the guide rail 110 to provide guidance for the opening and closing actions of the movable part of the mold.

[0048] To ensure the stability of the guide, the guide rails 110 are a pair, symmetrically arranged on both sides of the multi-link assembly to form a stable support and precise guide structure. The guide rails 110 are processed with high-precision machining and precision grinding technology, and the straightness, flatness and parallelism reach micron-level accuracy, and the surface hardness and wear resistance are excellent.

[0049] The bottom of the guide sleeve can be closely matched with the guide rail in a variety of optimized ways: like Figure 1-4 As shown, a guide groove 322 is provided at the bottom of the guide sleeve seat 321. The guide groove 322 is formed in one step by a high-precision CNC machining center. The two inner side walls thereof are closely fitted to the outer periphery of the guide rail 110, and the matching clearance is strictly controlled in a very small range to achieve high-precision guiding. Alternatively, a pair of sliding members are provided at the bottom of the guide sleeve seat 321, and the pair of sliding members match the guide rails 110 on both sides. The sliding members are made of self-lubricating, low-friction coefficient materials to ensure that there is no deviation, shaking or creeping when the guide sleeve seat 321 slides on the guide rails 110, providing precise guidance for the opening and closing actions of the movable part of the mold, and improving the mold positioning accuracy to micron level.

[0050] In practice, in order to ensure efficient linkage and precise operation of the top core components, specifically, the top core unit also includes: A cam plate 331, one end surface of which is used to contact the top core cam 330, and is used to receive the power transmitted by the top core cam 330, and a top core rod 334 is installed on the cam plate 331; The core ejector plate 336 is firmly connected to the core ejector rod 334 and fits tightly with the mold base plate 430 . During the core ejection process, the core ejector rod 334 transmits power to ensure that the sand core is ejected from the mold base plate 430 intactly.

[0051] When the core ejector cam 330 rotates, the power is transmitted to the core ejector plate 336 through the cam plate 331 and the core ejector rod 334 in sequence. The core ejector plate 336 instantly generates thousands of Newtons of uniform ejection force, ensuring that the sand core is completely and intactly ejected from the mold base plate 430. The various components work together and efficiently, providing a solid guarantee for the sand core demolding operation.

[0052] Preferably, in this embodiment, a guide reset device is also provided, and the core pushing unit further includes a guide plate 335, which is located between the cam plate 331 and the core pushing plate 336, and has a through hole for the core pushing rod 334 to pass stably along a straight line direction, thereby providing a stable guide for the core pushing action. The number of the core pushing rod 334 is not limited to one, and can be flexibly set according to actual working conditions.

[0053] The cam plate 331 is provided with a return spring 333, which is sleeved on the outer periphery of the guide rod 332, and the guide rod 332 is installed on the cam plate 331. One end of the return spring 333 is tightly connected to the cam plate 331, and the other end is firmly connected to the guide plate 335.

[0054] After the mold is closed, at the moment when the ejector cam 330 and the cam plate 331 are separated, the return spring 333 quickly releases energy by virtue of its own elastic potential energy, and pulls the cam plate 331 to smoothly return to the initial standby position, preparing for the next ejector cycle operation, effectively maintaining the stable cycle operation rhythm of the mechanism, and greatly improving the production rhythm and overall production efficiency.

[0055] The number of the return springs 333 is not limited to one, and can be flexibly set according to actual working conditions. In this embodiment, the number of the return springs 333 is preferably two, which are symmetrically distributed on both sides of the core ejector cam 330 in the thickness direction, and their positions are avoided from the core ejector cam 330 to avoid affecting the eccentric movement of the core ejector cam 330, thereby ensuring the smooth completion of the mold opening and closing action and the core ejection action.

[0056] The core ejector cam 330 has a cam core portion, which is an irregular circular structure and is used to contact the cam plate 331 to eject the sand core. This shape can adaptively adjust the size and direction of the core ejector force according to the sand core molding conditions and demolding mechanical requirements during the contact transmission process with the cam plate, ensuring that the core ejector force acts evenly and gently on the sand core, effectively avoiding the risk of damage and rupture of the sand core due to local force concentration, significantly improving the demolding success rate and finished product quality of the sand core, greatly reducing the waste output rate, and deeply optimizing production cost control.

[0057] The electric clamp-type mold clamping and cam core integrated device of this embodiment further includes a driving unit, which includes a driving motor 200 and a driving shaft 220. The driving shaft 220 is used to drive the core cam 330 to achieve eccentric rotation.

[0058] Preferably, the driving motor 200 is a servo motor, a stepping motor or a reduction motor, and may also be adapted to other common motors.

[0059] The top core cam 330 is a pair, and the driving shaft 220 is used to connect the pair of top core cams 330 to form an integral structure, namely a cam assembly, whose two ends are respectively rotatably connected to a pair of multi-link assemblies, and hinges are provided at both ends of the cam assembly.

[0060] When a rotating shaft is used as a hinged part, the hinged end of the driving connecting rod 311 and the cam assembly is provided with an annular sleeve, and the annular sleeve is sleeved on the outer periphery of the rotating shaft; or the hinged end of the driving connecting rod 311 and the cam assembly is provided with a hinge hole, and the rotating shaft passes through the hinge hole to realize the hinge between the two.

[0061] When a sleeve is used as a hinged member, the hinged end of the driving connecting rod 311 has a hinged shaft, and the sleeve has a cavity inside for accommodating the hinged shaft.

[0062] like Figure 8 The distance adjusting unit 500 in this embodiment includes a distance adjusting component and a driving component. The distance adjusting component is connected to the movable part of the mold, and is used to control the movable part of the mold to further move linearly along the mold opening and closing direction after mold closing, so as to achieve fine adjustment of the minimum mold closing distance; the driving component drives the distance adjusting component to move back and forth linearly along the mold closing direction.

[0063] In this embodiment, the movable part of the mold can be pushed or pulled to move under the action of external power by connecting with the movable part of the mold. After the initial mold closing is completed, when the mold closing distance needs to be further adjusted, the distance adjustment component can act according to the instruction. The problem that the existing mold closing mechanism is difficult to accurately adjust the minimum mold closing distance is effectively solved, so that the mold closing distance can be accurately fine-tuned according to the needs of different molds, improving the mold closing accuracy, thereby ensuring the product molding quality.

[0064] In practice, the number of the distance adjusting components is at least one, which is arranged outside the movable part of the mold. Arranging it outside is convenient for installation and connection with the driving component and other components. The specific number of the distance adjusting components can be adjusted according to actual conditions, as shown in the attached figure. Figure 1 As shown in the figure, the distance adjustment components are a pair, symmetrically arranged on the outer sides of the movable parts of the mold on both sides, and can also be as shown in the attached Figure 3 As shown, there is one distance adjusting component, which is arranged outside the movable part of the mold on one side.

[0065] It should be noted here that if the mold opening and closing is achieved by moving the movable parts of the mold on both sides, a distance adjustment component can be provided on the outer side of the movable part of the mold on either side to achieve the adjustment of the minimum distance of the mold closing in one direction; or distance adjustment components can be provided on the outer side of the movable parts of the mold on both sides to achieve the adjustment of the minimum distance of the mold closing in two directions. If the mold opening and closing is achieved by moving the movable part of the mold close to or away from the fixed part of the mold, only one distance adjustment component needs to be provided on the outer side of the movable part of the mold.

[0066] Furthermore, in this embodiment, the distance adjusting component and the movable part of the mold are connected via an opening and closing template 320. The connection via the opening and closing template 320 can better adapt to different mold structures and evenly transfer the force of the distance adjusting component to the movable part of the mold.

[0067] A guide sleeve seat 321 is provided at the bottom of the opening and closing template 320, and a guide rail 110 is provided on the base 100, wherein the guide sleeve seat 321 can slide linearly on the guide rail 110, so as to facilitate sliding guidance of the linear motion of the opening and closing template 320 and the movable mold 410, which is not only convenient for guiding them during the opening and closing process, but also beneficial for sliding guidance again when adjusting the minimum distance of the mold after the mold is closed.

[0068] Please refer to the attached Figure 8-10In this embodiment, the distance adjustment component includes an adjustment nut 544, which is used to connect with the movable part of the mold or the opening and closing template 320. The adjustment nut 544 has an internal thread section and an external thread section. The movable part of the mold or the opening and closing template 320 is provided with a threaded hole on the relative outer side, and a thread section meshing with the external thread section is provided in the threaded hole. The outer periphery of the adjustment shaft 545 is provided with a thread section meshing with the internal thread, and the adjustment nut 544 is sleeved on the outer periphery of the adjustment shaft 545.

[0069] When the adjustment shaft 545 rotates, the adjustment nut 544 moves along the axial direction of the adjustment shaft 545 due to the threaded engagement relationship. The adjustment nut 544 is threadedly connected to the movable part of the mold or the opening and closing mold plate 320, and the axial movement of the adjustment nut 544 is converted into the linear motion of the movable part of the mold. The precision of the threaded transmission is used to convert the rotational motion into the linear motion, so as to achieve the precise adjustment of the mold closing distance. This structure is simple and reliable, and can provide a stable adjustment force.

[0070] In actual use, the connecting thread between the adjusting nut 544 and the movable mold 410 or the opening and closing mold plate 320 in this embodiment can be designed to have a larger pitch so that a larger mold closing distance adjustment range can be achieved at a smaller rotation angle of the adjustment motor 510.

[0071] In some feasible implementations, the driving component includes an adjustment motor 510 and an output shaft 512 , wherein the adjustment motor 510 serves as a power source to convert electrical energy into mechanical energy, and the output shaft 512 outputs a rotational motion.

[0072] In practice, the adjustment motor 510 includes but is not limited to a servo motor, a stepper motor or a reduction motor. The servo motor can accurately control the speed, position and torque, and can achieve high-precision motion control according to the instructions of the control system; the stepper motor is controlled by a pulse signal, and rotates a fixed angle every time a pulse signal is received, which is convenient for achieving precise position control; the reduction motor can increase the torque while reducing the speed to adapt to different load requirements.

[0073] The above-mentioned driving component provides power for the distance adjustment component. By accurately controlling the output of the adjustment motor 510, precise control of the mold distance adjustment can be achieved to meet the requirements of different molds for mold distance adjustment accuracy. Different types of adjustment motors 510 can be selected according to specific application scenarios to meet the requirements of different devices for mold distance adjustment speed, accuracy and torque, thereby improving the applicability and flexibility of the driving component.

[0074] Furthermore, in this embodiment, the adjustment motor 510 is firmly mounted on the frame of the core making machine or injection molding equipment through the motor seat 511, ensuring that it remains stable during operation and reducing the impact of vibration on the adjustment accuracy. The motor seat 511 is made of high-strength aluminum alloy, has good heat dissipation performance and light weight, and is easy to install and adjust.

[0075] In some feasible embodiments, the distance adjustment component also includes a synchronization unit 540, and the synchronization unit 540 is used to realize the synchronous rotation of the output shaft 512 and the adjustment shaft 545; the synchronization unit 540 includes a synchronous transmission member, and a driving pulley 541 and a driven pulley 543 are respectively provided at both ends of the synchronous transmission member, and the driving pulley 541 is sleeved on the outer periphery of the output shaft 512, wherein the output shaft 512 and the driving pulley 541 are connected by a key to ensure that the connection between the two is tight and can effectively transmit torque; the driven pulley 543 is sleeved on the outer periphery of the adjustment shaft 545.

[0076] Furthermore, the synchronous transmission member is a synchronous belt 542 or a synchronous chain structure. It can be understood that when the synchronous transmission member is a synchronous belt 542, the two ends of the synchronous belt 542 can be sleeved on the outer periphery of the driving pulley 541 and the driven pulley 543; and when the synchronous transmission member is a synchronous chain structure, the driving pulley 541 and the driven pulley 543 are gear structures that mesh with the chain.

[0077] When the output shaft 512 of the adjustment motor 510 rotates, the driving pulley 541 is driven to rotate, and the driving pulley 543 transmits power to the driven pulley 543 through the synchronous transmission member (synchronous belt or synchronous chain), and the driven pulley 543 drives the adjustment shaft 545 to rotate synchronously. The synchronous belt or synchronous chain can ensure the synchronous rotation between the driving pulley and the driven pulley, thereby realizing the synchronous movement of the adjustment shaft and the output shaft.

[0078] The synchronous rotation of the adjustment shaft 545 and the output shaft 512 is ensured to avoid the incoordination of the distance adjustment components due to transmission errors, which affects the adjustment accuracy of the mold closing distance. The synchronization unit 540 improves the accuracy and stability of power transmission, ensures the reliable operation of the entire distance adjustment system, and enables the mold closing distance to be accurately adjusted as expected.

[0079] In some feasible implementations, the distance adjustment unit of this embodiment further includes a locking component, which is used to apply a locking force to the movable part of the mold to achieve tight locking of the mold. The locking component in this embodiment can effectively prevent the mold from becoming loose or not tightly clamped due to various forces (such as injection pressure, sand core molding pressure, etc.) during operation, ensuring that the mold maintains a stable clamping state during the molding process, thereby improving the molding quality of the product and reducing product defects caused by clamping problems, such as flash, lack of material, etc.

[0080] like Figure 8 As shown, the locking component includes a locking cylinder 531 and a locking screw 532. The locking screw 532 is used to contact the movable part of the mold or the relative outer side surface of the opening and closing template 320 and apply a locking force; the locking cylinder 531 is used to drive the locking screw 532 to perform a linear reciprocating motion along the opening and closing direction of the mold.

[0081] After the minimum mold closing distance is fine-tuned, the locking cylinder 531 receives the signal from the control system and starts to move, pushing the locking screw 532 to move in the mold opening and closing direction. The locking screw 532 contacts the movable part of the mold or the opening and closing template 320, converting the thrust of the cylinder into a locking force on the mold, so that the mold fits tightly. The locking cylinder 531 can be selected with a model with fast response and high-precision positioning functions, and its piston stroke can be accurately controlled within ±0.1mm.

[0082] Furthermore, the end of the locking screw 532 adopts a spherical structure, and the contact with the movable part of the mold or the opening and closing template 320 is point contact, which can adapt to the unevenness of the mold surface to a certain extent and ensure that the locking force is evenly distributed.

[0083] In some feasible implementations, the distance adjustment unit of this embodiment further includes a connecting seat 520, and the connecting seat 520 is used to install the adjustment shaft 545 and the locking component, and the connecting seat 520 is provided with a through hole for the locking screw 532 to pass through.

[0084] In this embodiment, the connecting seat 520 provides a mounting base for the adjustment shaft 545 and the locking component to ensure that their relative positions in space are stable. The through hole provides a guide for the movement of the locking screw 532, so that the locking screw 532 can accurately apply the locking force in a predetermined direction, while preventing the locking screw 532 from deviating during the movement process, which affects the locking effect.

[0085] In some achievable embodiments, the connecting seat 520 is connected to the mold clamping mechanism; a mounting seat is provided on the connecting seat 520, and the mounting seat is connected to the mold clamping arm of the mold clamping mechanism so that the mounting seat and the mold clamping mechanism move in coordination. The connecting seat is connected to the mold clamping mechanism so that the distance adjustment unit becomes a part of the mold clamping mechanism and can be synchronized with the mold opening and closing actions of the mold clamping mechanism.

[0086] The connection method between the mounting base and the mold clamping arm (such as hinged connection) ensures that the connecting base can move with the movement of the mold clamping arm, realizes coordinated work with the mold clamping mechanism, and enables the distance adjustment unit to work closely with the mold clamping mechanism. During the mold closing and opening process, the adjustment mechanism can adjust the mold closing distance in time according to the action of the mold clamping mechanism and perform locking operations, thereby improving the working efficiency and coordination of the entire mold system and ensuring the smooth progress of the mold closing process.

[0087] Preferably, the number of locking components in this embodiment is not limited to one. Multiple locking components can apply locking force to the mold from different positions, increase locking points, improve locking uniformity and stability, further enhance the locking effect on the mold, ensure that the mold maintains a tight mold state during operation, and improve the consistency of product molding quality. Especially for large or complex molds, multiple symmetrically distributed locking components can better adapt to the structural characteristics of the mold and provide reliable locking guarantees.

[0088] When there are two locking components, the locking components are symmetrically distributed at both ends of the connecting seat 520 ; the mold can be subjected to a balanced locking force on both sides, thereby preventing the mold from being offset or deformed due to uneven force.

[0089] In actual use, the two locking cylinders 531 are controlled by the same solenoid valve to ensure simultaneous operation so that the locking force is evenly distributed on both sides of the mold. During the locking process, the output pressure of the locking cylinder 531 can be monitored by the pressure sensor. When the pressure reaches the preset value, it indicates that the mold has been tightly locked. The control system stops the action of the locking cylinder 531, completing the entire mold distance adjustment and mold locking process.

[0090] The work of the distance adjustment unit in this embodiment mainly includes the following two operations: The first is the fine-tuning operation after the initial completion of the mold closing action. The specific working principle is as follows: After the mold closing action is initially completed, the adjustment motor 510 is started according to the mold's requirement for the minimum mold closing distance. The adjustment motor 510 drives the output shaft 512 to rotate, and the output shaft 512 drives the adjustment shaft 545 to rotate through the driving pulley 541, the synchronous belt 542 and the driven pulley 543. Since the adjustment nut 544 is threadedly matched with the adjustment shaft 545 and is connected to the movable mold 410 or the opening and closing mold plate 320, the rotation of the adjustment shaft 545 causes the adjustment nut 544 to drive the movable mold 410 to move linearly along the mold opening and closing direction, thereby achieving precise fine-tuning of the minimum mold closing distance.

[0091] The second is the locking operation of the mold, and its specific working principle is as follows: When the minimum mold closing distance is fine-tuned, the locking cylinder 531 is activated to push the locking screw 532 to move in the direction of mold opening and closing. The locking screw 532 contacts the relative outer side of the movable mold 410 or the opening and closing template 320 and applies a locking force to lock the mold tightly. The through hole on the connecting seat 520 provides a guide for the movement of the locking screw 532. The connecting seat 520 is hinged to the mold closing arm of the mold closing mechanism through the mounting seat, ensuring the coordinated work of the entire adjustment mechanism and the mold closing mechanism. When two locking components are used, they are symmetrically distributed at both ends of the connecting seat 520, so that the locking force can be applied more evenly.

[0092] In practice, the distance adjustment unit of this embodiment can be adaptively adjusted according to the specific needs of different equipment. For example, on different types of core making machines or injection molding equipment, the parameters of the distance adjustment component, the driving component, the locking component, etc. can be optimized according to the structural characteristics of the equipment and the mold requirements, including adjusting the power of the motor 510, the specifications of the synchronous belt 542, the thrust of the locking cylinder 531, etc., to achieve the best mold distance adjustment and mold locking effect. At the same time, the material selection of each component can also be adjusted according to the actual working conditions to improve the durability and reliability of the mechanism.

[0093] In a second aspect, the present invention provides a method for producing an electric clamp-type mold clamping and cam core integrated device, using the electric clamp-type mold clamping and cam core integrated device, and the production method comprises the following steps: (1) Mold closing action: Start the drive unit to drive the mold opening and closing units to coordinate and control the movable parts of the mold to achieve precise alignment along a predetermined straight line to complete the mold closing operation; (2) Adjustment of the minimum mold closing distance: After mold closing, start the distance adjustment unit, and the distance adjustment component controls the movable part of the mold to further move in a straight line along the mold opening and closing direction to achieve fine adjustment of the minimum mold closing distance; (3) Locking action: When the minimum mold closing distance is adjusted to the appropriate range, the locking component is activated to apply locking force to the movable part of the mold to achieve tight locking of the mold; (4) Mold opening and core pushing action: the driving unit is started again to drive the core pushing unit to contact the core pushing assembly to realize the core pushing operation, and the mold opening and closing unit is synchronously driven to realize the mold opening action; The above steps (1) to (4) are repeated repeatedly to achieve precise switching between core ejection and mold closing, thus ensuring the orderly progress of the core making process.

[0094] When the top core cam 330 in the top core unit rotates to the mold opening position, the mold opening and closing unit is synchronously driven to convert the rotational force into a linear force, and the movable part of the pulling mold moves along a preset straight line to open the mold cavity, thereby completing the mold opening action; When the top core cam 330 rotates to the mold closing position, the mold opening and closing unit is synchronously driven to pull the movable part of the mold to move along a predetermined straight line to achieve precise alignment of the mold and complete the mold closing action.

[0095] In the third aspect, the present invention provides an application of an electric clamp-type mold clamping and cam core integrated device, including the above-mentioned electric clamp-type mold clamping and cam core integrated device, which can be used in core making machines, core shooting machines, cold core machines and other core making equipment, or on injection molding equipment.

[0096] Working principle: Principle of mold opening and closing: The driving motor 200 is started, and the driving shaft 220 drives the top core cam 330 to rotate. When the mold is opened, the top core cam 330 moves according to a specific curve profile, pushing the driving connecting rod 311. The driving connecting rod 311 changes the direction and magnitude of the force through the rocker lever 312 and transmits it to the mold opening and closing tie rod 313. The mold opening and closing tie rod 313 pulls the movable part of the mold through the opening and closing template 320. Under the guidance of the guide sleeve seat 321 and the guide rail 110, the movable part of the mold moves toward each other along the guide rail 110 in a straight line to realize mold opening. The mold opening speed is related to the rotation speed of the top core cam 330, the driving connecting rod 311 and other component parameters, and can be adjusted according to process requirements. When closing the mold, the top core cam 330 rotates in the opposite direction, and the driving connecting rod 311 pulls the mold opening and closing rod 313, so that the movable part of the mold moves linearly relative to each other to close the mold. The size of the mold closing force is determined by the horizontal angle of the driving connecting rod 311 and the mechanical properties of each component. The mold closing accuracy is affected by the accuracy of the guide rail 110 and the accuracy of component processing and assembly, and can reach the micron level.

[0097] The principle of core ejection: During the mold opening process, the core ejection cam 330 reaches the mold opening position, the cam core ejection part touches the cam plate 331, and the force of the cam plate 331 is transmitted to the core ejection plate 336 through the core ejection rod 334, and the core ejection plate 336 ejects the sand core on the mold base plate 430. The irregular round shape of the cam core ejection part adaptively adjusts the core ejection force distribution according to the sand core molding condition and demolding mechanics. When the mold is closed, the core ejection cam 330 is separated from the cam plate 331, and the reset spring 333 resets the cam plate 331 to prepare for the next core ejection cycle. When the mechanism is working, the various components work together in sequence, and the drive motor 200 cooperates with the control system to intelligently and accurately control each action according to the preset program or sensor feedback, so as to realize efficient, stable, and precise automation of core production, improve the quality and efficiency of core making, and meet the development needs of the foundry industry.

[0098] The electrically driven mold closing and core pushing method used in the embodiments of the present invention has significant advantages and can effectively promote production towards high efficiency, intelligence and precision.

[0099] In terms of information management, electric drive can fully collect and feedback the operation data of the mechanism. When opening and closing the mold, the motor speed, torque, and the force and displacement of the multi-link assembly can be monitored and recorded in real time and transmitted to the management system. This helps operators understand the operating status, predict faults, reduce downtime, improve efficiency, and provide a basis for process optimization, enhance product quality stability, and improve corporate competitiveness.

[0100] In terms of repair and maintenance, with the help of sensors and communication modules, operating data can be transmitted to the remote monitoring center in real time. Based on this, technicians can remotely diagnose faults, guide on-site repairs or deploy resources, and shorten repair time. The fault prediction model built based on big data can achieve preventive maintenance, reduce operation and maintenance costs, and ensure production continuity.

[0101] The electric drive mechanism is highly adaptable in coordination with other parts of the core making machine. For example, when working with a robot, the mold closing, core ejection and robot movements can be precisely controlled according to the program or sensor feedback to ensure that the robot grabs the sand core synchronously at the moment of ejection, avoiding production stagnation and product damage, improving the stability and efficiency of production rhythm, meeting the needs of foundry industry automation and intelligent production, and promoting the growth of corporate benefits.

[0102] The above is an exemplary description of the present invention in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. 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. An electric clamp type mold clamping and cam core integrated device, characterized in that: include: A mold opening and closing unit, which is a clamp-type structure and is used to cooperate with the movable part of the mold to realize the opening and closing actions; A core push unit, the core push unit is used to contact with the core push assembly and apply a push force; A driving unit, the driving unit comprising a driving motor (200), when the driving motor (200) drives the core pushing unit to contact the core pushing assembly to implement the core pushing operation, the mold opening and closing unit is synchronously driven to implement the mold opening action; When the driving motor (200) drives the top core unit to separate from the top core assembly, the mold opening and closing unit is synchronously driven to realize the mold closing action; A distance adjustment unit (500) is connected to the movable part of the mold and is used to control the movable part of the mold to further move linearly along the mold opening and closing direction after mold closing, thereby achieving fine adjustment of the minimum mold closing distance.

2. The electric clamp type mold clamping and cam core integrated device according to claim 1, characterized in that: The distance adjustment unit comprises: A distance adjusting component, which is connected to the movable part of the mold and is used to adjust the minimum distance of mold closing; A driving component, the driving component comprising an adjustment motor (510) and an output shaft (512), and used for driving the distance adjustment component to perform linear reciprocating motion along the mold closing direction; And / or, the distance adjusting component is at least one and is arranged outside the movable part of the mold; And / or, the distance adjusting component is connected to the movable part of the mold via an opening and closing mold plate (320).

3. The electric clamp type mold clamping and cam core integrated device according to claim 2, characterized in that: The distance adjusting component comprises: an adjusting nut (544), the adjusting nut (544) being used to be connected to a movable part of the mold or an opening and closing mold plate (320); The adjusting nut (544) has an internal thread section and an external thread section, and a threaded hole is provided on the relatively outer side of the movable part of the mold or the opening and closing template (320), and a threaded section meshing with the external thread section is provided in the threaded hole; The outer circumference of the adjustment shaft (545) is provided with a thread segment meshing with the internal thread, and the adjustment nut (544) is sleeved on the outer circumference of the adjustment shaft (545); A synchronization unit (540), the synchronization unit (540) being used to achieve synchronous rotation of the output shaft (512) and the adjustment shaft (545).

4. The electric clamp type mold clamping and cam core integrated device according to claim 2, characterized in that: The distance adjustment unit also includes: A locking component, which is used to apply a locking force to the movable part of the mold to achieve tight locking of the mold; And / or, the locking component comprises a locking cylinder (531) and a locking screw (532), wherein the locking screw (532) is used to contact the movable part of the mold or the relative outer side surface of the opening and closing mold plate (320) and apply a locking force; The locking cylinder (531) is used to drive the locking screw (532) to perform linear reciprocating motion along the mold opening and closing direction; And / or, the number of the locking component is at least one.

5. The electric clamp type mold clamping and cam core integrated device according to any one of claims 1 to 4, characterized in that: The top core unit comprises: A core ejector cam (330), wherein the core ejector cam (330) has a mold opening position and a mold closing position; When the ejector cam (330) is located at the mold opening position, the ejector cam (330) contacts the ejector assembly and applies an ejection force to cause the sand core to be ejected from the mold; When the ejector cam (330) is located at the mold closing position, the ejector cam (330) is disengaged from the ejector assembly, ensuring that the mold is in a stable closed state, thereby achieving a smooth switch between ejecting the sand core and closing the mold.

6. The electric clamp type mold clamping and cam core integrated device according to claim 5, characterized in that: The top core unit also includes: A cam plate (331), one end surface of which is used to contact the top core cam (330) and to receive power transmitted by the top core cam (330), and a top core rod (334) is mounted on the cam plate (331); The core ejector plate (336) is firmly connected to the core ejector rod (334) and is tightly fitted to the mold base plate (430). During the core ejection process, power is transmitted through the core ejector rod (334) to ensure that the sand core is ejected from the mold base plate (430) intactly and without damage.

7. The electric clamp type mold clamping and cam core integrated device according to claim 5, characterized in that: The top core unit also includes: a guide plate (335), the guide plate (335) being located between the cam plate (331) and the core pushing plate (336), and being provided with a through hole for the core pushing rod (334) to pass through in a straight line direction, so as to provide a stable guiding function for the core pushing action; And / or, the cam plate (331) is provided with a return spring (333), one end of the return spring (333) is tightly connected to the cam plate (331), and the other end is firmly connected to the guide plate (335); After the mold closing is completed, at the moment when the core ejection cam (330) and the cam plate (331) are separated, the return spring (333) rapidly releases energy by virtue of its own elastic potential energy, and pulls the cam plate (331) to smoothly return to the initial standby position, so as to prepare for the next core ejection cycle operation.

8. The electric clamp type mold clamping and cam core integrated device according to claim 5, characterized in that: The mold opening and closing unit comprises: A multi-link assembly, wherein the multi-link assembly is a pair, symmetrically arranged on both sides of the top core cam (330), and the pair of multi-link assemblies are in a clamp-type structure.

9. The electric clamp type mold clamping and cam core integrated device according to claim 8, characterized in that: When the top core cam (330) rotates to the mold opening position, the double-sided multi-link assembly is synchronously driven to convert the rotational force into a linear force, and the movable part of the pulling mold is displaced toward each other along a preset straight line to complete the mold opening; During the process of the ejector cam (330) reversing to the mold closing position, the multi-link assembly is synchronously driven, and the multi-link assembly cooperatively transmits the contraction force, driving the movable part of the mold to achieve precise alignment along a predetermined straight line.

10. The electric clamp type mold clamping and cam core integrated device according to claim 8, characterized in that: The multi-link assembly comprises: A driving connecting rod (311), one end of which is rotatably connected to the top core cam (330) and is used to receive and transmit the rotational power of the top core cam (330); A mold opening and closing pull rod (313), one end of which is firmly connected to the movable part of the mold to transmit power and drive the movable part of the mold to realize the mold opening and closing action, thereby ensuring the accuracy and repeatability of the mold movement; And / or, in the mold closing state, the mold opening and closing pull rod (313) and the driving connecting rod (311) approach a horizontal position in a specific first direction, and cooperate with the rocker arm lever (312) to construct a stable force transmission structure, thereby providing a strong, continuous and stable clamping force for the mold, ensuring that the mold is tightly locked.

11. The electric clamp type mold clamping and cam core integrated device according to claim 10, characterized in that: The multi-link assembly further comprises: A rocker lever (312), both ends of which are respectively hinged to the driving connecting rod (311) and the mold opening and closing pull rod (313); And / or, the geometric shapes of the driving connecting rod (311), the rocker lever (312) and the mold opening and closing pull rod (313) are not limited to rod-shaped, and may be tubular or plate-shaped structures; Alternatively, it can be customized into curved, wavy, or other regular or irregular shapes according to actual working conditions, and it is only necessary to ensure that the multi-link assembly composed of the driving connecting rod (311), the rocker lever (312), and the mold opening and closing pull rod (313) on both sides can accurately realize the clamp-like opening and closing action and stable force transmission function.

12. The electric clamp type mold clamping and cam core integrated device according to claim 8, characterized in that: The distance adjustment unit also includes: A connecting seat (520), the connecting seat (520) being used to mount the adjusting shaft (545) and the locking component, and the connecting seat (520) being provided with a through hole for the locking screw rod (532) to pass through; And / or, a mounting seat is provided on the connecting seat (520), and the mounting seat is connected to the multi-link assembly so that the mounting seat and the multi-link assembly move in coordination.

13. The electric clamp type mold clamping and cam core integrated device according to claim 6, characterized in that: The multi-link assembly and the movable part of the mold are firmly connected by means of an opening and closing template (320), and a guide sleeve seat (321) is provided at the bottom of the opening and closing template (320); The guide sleeve seat (321) is slidably sleeved on the guide rail (110) and slides linearly along the length direction of the guide rail (110), thereby providing guidance for the opening and closing actions of the movable part of the mold.

14. A method for producing an electric clamp-type mold clamping and cam core integrated device, characterized in that: The production method of the electric clamp type mold clamping and cam core integrated device according to any one of claims 1 to 13 comprises the following steps: (1) Mold closing action: Start the drive unit to drive the mold opening and closing units to coordinate and control the movable parts of the mold to achieve precise alignment along a predetermined straight line to complete the mold closing operation; (2) Adjustment of the minimum mold closing distance: After mold closing, start the distance adjustment unit, and the distance adjustment component controls the movable part of the mold to further move in a straight line along the mold opening and closing direction to achieve fine adjustment of the minimum mold closing distance; (3) Locking action: When the minimum mold closing distance is adjusted to the appropriate range, the locking component is activated to apply locking force to the movable part of the mold to achieve tight locking of the mold; (4) Mold opening and core pushing action: the driving unit is started again to drive the core pushing unit to contact the core pushing assembly to realize the core pushing operation, and the mold opening and closing unit is synchronously driven to realize the mold opening action; The above steps (1) to (4) are repeated repeatedly to achieve precise switching between core ejection and mold closing, thus ensuring the orderly progress of the core making process.

15. The production method of the electric clamp type mold clamping and cam core integrated device according to claim 14, characterized in that: When the ejector cam (330) in the ejector unit rotates to the mold opening position, the mold opening and closing unit is synchronously driven to convert the rotational force linearly, and the movable part of the mold is pulled to move along a preset straight line to open the mold cavity, thereby completing the mold opening action; When the top core cam (330) rotates to the mold closing position, the mold opening and closing unit is synchronously driven to pull the movable part of the mold to move along a predetermined straight line to achieve accurate mold alignment and complete the mold closing action.

16. Application of an electric clamp type mold clamping and cam core integrated device, characterized in that: It comprises an electric clamp-type mold clamping and cam core-pushing integrated device as described in any one of claims 1 to 13, which can be used in core making equipment or injection molding 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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