Toggle rod type mold closing mechanism of all-electric core making machine

Abstract

The invention discloses a toggle rod type mold closing mechanism of a full-electric core making machine, the toggle rod type mold closing mechanism comprises a driving mechanism, a toggle rod mechanism, an opening and closing mechanism and a jacking mechanism, the driving mechanism is connected and matched with the toggle rod mechanism, and is used for driving the opening and closing mechanism to perform mold closing and mold opening on a sand core in the manufacturing process and after the manufacturing is completed; and when the opening and closing mechanism does linear motion in the mold opening direction, the driving mechanism is used for driving the opening and closing mechanism to eject out the manufactured sand core. Through the opening and closing mechanism and the jacking mechanism, the movement of the opening and closing mechanism in the mold opening direction is ingeniously utilized, the jacking mechanism is directly driven to automatically eject the sand core through linkage of the driving mechanism and the toggle rod mechanism, additional driving elements and operation steps are not needed, the core making process is simplified, the sand core is automatically ejected, manual intervention is reduced, and the production efficiency is improved. And the production efficiency is improved, no extra driving element is needed, and the manufacturing cost and the maintenance cost of equipment are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of core making machines, in particular to a toggle-type mold clamping mechanism of a full-electric core making machine. Background Art

[0002] In metal casting production, sand casting is a commonly used method, which requires the production of precise sand cores to form the internal cavity of the casting. With the development of casting technology, higher requirements are placed on the quality and production efficiency of sand cores. In order to meet the needs of sand casting, core making machines came into being. Core making machines replace traditional manual core making in a mechanized way, improving the manufacturing accuracy and production efficiency of sand cores.

[0003] In the core making machine, the clamping mechanism is one of the key components, which is responsible for closing the sand core mold and compacting the sand material to ensure the dimensional accuracy and strength of the sand core.

[0004] The toggle-type clamping mechanism in the present application is a mechanism designed based on the principle of mechanical lever, which uses the elbow movement of the toggle lever to close and open the mold. This mechanism can provide a larger clamping force and meet the needs of molds of different sizes. Compared with other types of clamping mechanisms, the toggle-type clamping mechanism has the advantages of simple structure, easy operation, high pressure, and strong adaptability.

[0005] Although the toggle-type clamping mechanism of the existing all-electric core making machine can achieve the above-mentioned effects when making sand cores, it still has certain defects, such as: After the sand core is made, it is not convenient to use the elbow mechanism and the opening and closing mechanism to move in the mold opening direction, and the finished sand core cannot be automatically ejected, resulting in the need for additional driving elements to eject it. This not only increases the cost of sand core production, but also reduces the efficiency of sand core production. Therefore, it is necessary to provide a toggle-type clamping mechanism for a fully electric core making machine to meet the above-mentioned technical effects. Summary of the invention

[0006] The object of the present invention is to provide a toggle-type mold clamping mechanism for a fully electric core making machine, so as to solve the problem in the above background technology that after the sand core is made, it is not convenient to use the toggle mechanism and the opening and closing mechanism of the existing core making machine to realize movement in the mold opening direction, and the completed sand core cannot be automatically ejected, resulting in the need for additional driving elements to eject it, which not only increases the cost of sand core production, but also reduces the efficiency of sand core production. The technical solution of the present invention is aimed at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology.

[0007] To achieve the above object, the present invention provides the following technical solutions: a toggle-type clamping mechanism of a fully electric core making machine, comprising at least a driving mechanism, a toggle mechanism, an opening and closing mechanism and a lifting mechanism, wherein the driving mechanism is connected and matched with the toggle mechanism to drive the opening and closing mechanism to clamp and open the sand core during and after the production process to improve the clamping force and dimensional accuracy; When the opening and closing mechanism performs linear motion in the mold opening direction, it is used to drive the opening and closing mechanism to eject the completed sand core.

[0008] In a further embodiment, a supporting mechanism and a guiding mechanism are further included, wherein the supporting mechanism is used to support the guiding mechanism and the driving mechanism.

[0009] In a further embodiment, the support mechanism includes a support plate, a guide rail, a limit seat, a side template and a reinforcement plate. The guide rail is arranged in parallel above the support plate for directional movement of the opening and closing mechanism. The limit seat is arranged at one end of the guide rail for limiting the guide mechanism. The side template is located at the other end of the guide rail, and the reinforcement plate is symmetrically installed on one side of the side template.

[0010] In a further embodiment, the guide mechanism includes a sleeve and a sliding rod, the sleeve is used to limit the sliding rod and passes through the limiting seat, and the sliding rod is slidably connected to the inner side of the sleeve to orient the moving direction of the sliding rod.

[0011] In a further embodiment, the driving mechanism includes a connecting plate, a driving box and a driving unit, the connecting plate is used to support the driving box and is arranged above the limiting seat, and the driving unit cooperates with the driving box.

[0012] In a further embodiment, the driving mechanism also includes a driving shaft, a turntable, a boss and a pull rod. The driving shaft and the turntable can be driven to rotate by cooperating with the driving box through the driving unit. The boss is arranged at a center position away from the turntable and is connected to the pull rod to drive the reciprocating movement of the pull rod.

[0013] In a further embodiment, the toggle mechanism includes a pull rod, a first hinge plate, a first connecting block, a first connecting rod, a second hinge plate and a second connecting rod, the first hinge plate is movably connected to both ends of the pull rod, and the pull rod is movably connected to one end of the pull rod, the first connecting block is connected to the side of the limit seat, and is movably connected to the side of the first hinge plate through the first connecting rod, the second hinge plate is movably connected to the side of the first hinge plate symmetrically distributed up and down through the pull rod and the second connecting rod, the pull rod can be connected through a reaming hole at a position in the middle of the first hinge plate, and can also be connected to the same center as the connecting rod.

[0014] In a further embodiment, the toggle mechanism further includes a middle connecting rod, a third hinged plate, a second connecting block and a third connecting rod, wherein both ends of the middle connecting rod are movably connected to the third hinged plates on both sides, and the third hinged plate is movably connected to the second connecting block via the third connecting rod.

[0015] In a further embodiment, the opening and closing mechanism includes an opening and closing mold and a slider. The opening and closing mold is arranged at the end of the slide rod and is located between the limit seat and the side mold plate, and is used for closing and opening the sand core during and after the production process.

[0016] In a further embodiment, the jacking mechanism comprises a mounting plate, a first telescopic rod, a jacking block, an oil pipe and a second telescopic rod, the mounting plate is "L" shaped and is located below the support plate; When the sand core is manufactured, when the mold opening and closing moves in the mold opening direction, the second telescopic rod is driven to cooperate with the oil pipe to drive the first telescopic rod and the ejector block to eject the sand core upward.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention is provided with an opening and closing mechanism and a lifting mechanism. When the core making is completed, the opening and closing mechanism starts to move in the mold opening direction, triggering the operation of the driving mechanism and the elbow mechanism; the driving mechanism transmits power to the elbow mechanism, the elbow mechanism amplifies the power through the lever principle, and the movement of the elbow mechanism finally drives the lifting mechanism, and the lifting mechanism pushes the sand core out of the mold through the telescopic rod and the ejector block, cleverly utilizing the movement of the opening and closing mechanism in the mold opening direction, and directly driving the lifting mechanism to automatically eject the sand core through the linkage of the driving mechanism and the elbow mechanism, without the need for additional driving elements and operating steps, thereby simplifying the core making process, automatically ejecting the sand core, reducing manual intervention, and improving production efficiency, without the need for additional driving elements, and reducing the manufacturing cost and maintenance cost of the equipment. The present invention adopts an elbow mechanism to achieve mold closing. The elbow mechanism has the following advantages: it can provide a larger mold closing force. The elbow mechanism utilizes the lever principle to amplify the power of the driving mechanism, thereby generating a larger mold closing force. The elbow mechanism has a compact structure, can effectively transmit power, and reduce energy loss. The various components of the elbow mechanism can be adjusted to adapt to sand cores of different sizes and shapes, and adjust the size of the mold closing force. A larger mold closing force can ensure the dimensional accuracy, strength and density of the sand core, and improve the quality of the sand core. Good sand core quality is the basis for ensuring the quality of castings and meeting the requirements of casting production. The elbow mechanism can adapt to sand cores of different sizes and shapes, and adjust the size of the mold closing force to meet the diverse core making needs. At the same time, the elbow mechanism cooperates with the guide column to ensure that the stability during the mold opening and closing process is basically horizontal, and the offset angle is controlled within the range of 0~10°. 3. The present invention adopts servo electronic control to realize two-way mold opening, so that the manufactured sand core can be easily grabbed synchronously with the robot, which is convenient for uploading and processing big data, fully automatic processing, and later maintenance. In addition, the data can be easily uploaded to the Internet of Things, which is convenient for fully automatic management and has complete data feedback for information management. Maintenance can be analyzed and processed remotely, and it can be coordinated with other components of the core making machine, such as synchronization with the robot, to facilitate seamless connection of the production rhythm.

[0018] In summary, the present invention provides a larger clamping force by adopting a toggle mechanism and a lifting mechanism, effectively ensures the quality of the sand core, meets the requirements of casting production, has important practical value, and also achieves the effect of two-way mold opening. It does not require additional driving elements and operating steps, simplifies the core making process, automatically ejects the sand core, reduces manual intervention, improves production efficiency, does not require additional driving elements, and reduces the manufacturing cost and maintenance cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the mold opening structure of the present invention; Figure 2 It is a schematic diagram of the mold clamping structure of the present invention; Figure 3 for Figure 1 A schematic diagram of the structure of the driving mechanism shown; Figure 4 for Figure 2 The schematic diagram of the structure of the toggle mechanism shown; Figure 5 for Figure 1 The enlarged structural diagram of point A shown; Figure 6 This is a schematic diagram of the ejection structure after the sand core is manufactured in the present invention; Figure 7 It is a structural schematic diagram of the two-way mold opening of the present invention.

[0020] In the figure: 100, support mechanism; 101, support plate; 102, guide rail; 103, limit seat; 104, side template; 105, reinforcement plate; 200, guide mechanism; 201, sleeve; 202, slide bar; 300, drive mechanism; 301, connecting plate; 302, drive box; 303, drive unit; 304, drive shaft; 305, turntable; 306, boss; 307, pull rod; 400, elbow mechanism; 401, pull rod; 402, first hinge plate; 403, first connecting block ; 404, first connecting rod; 405, second hinged plate; 406, second connecting rod; 407, middle connecting rod; 408, third hinged plate; 409, second connecting block; 410, third connecting rod; 500, opening and closing mechanism; 501, opening and closing mold; 502, slider; 600, lifting mechanism; 601, mounting plate; 602, first telescopic rod; 603, lifting block; 604, oil pipe; 605, second telescopic rod; 700, linkage mechanism; 701, L-shaped rod; 702 connecting rod mechanism, 703, push rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-7 An embodiment of the present invention is as follows: a toggle-type mold clamping mechanism of a fully electric core making machine, comprising at least a driving mechanism 300, a toggle mechanism 400, an opening and closing mechanism 500 and a lifting mechanism 600. The driving mechanism 300 is connected and cooperated with the toggle mechanism 400 to drive the opening and closing mechanism 500 to improve the clamping force and dimensional accuracy of the sand core during and after the production process.

[0023] Example 1 Please refer to Figure 1-2 , also includes a supporting mechanism 100 and a guiding mechanism 200, the supporting mechanism 100 is used to support the guiding mechanism 200 and the driving mechanism 300, the supporting mechanism 100 includes a supporting plate 101, a guide rail 102, a limiting seat 103, a side template 104 and a reinforcing plate 105, the guide rail 102 is arranged in parallel above the supporting plate 101, and is used for directional movement of the opening and closing mechanism 500, the limiting seat 103 is arranged at one end of the guide rail 102, and is used for limiting the guiding mechanism 200, the side template 104 is located at the other end of the guide rail 102, and the reinforcing plate 105 is symmetrically installed on one side of the side template 104.

[0024] The design of the above structure supports the guide mechanism 200 and the driving mechanism 300 through the support mechanism 100, and the opening and closing mold 501 can cooperate with the slider 502 below to make directional reciprocating motion through the guide rail 102, and the side mold plate 104 and the reinforcement plate 105 are used for the resistance support of the concave and convex molds.

[0025] Example 2 Please refer to Figure 1-5 , which is different from the first embodiment, is that: the guide mechanism 200 includes a sleeve 201 and a slide bar 202, the sleeve 201 is used to limit the slide bar 202 and passes through the limit seat 103, the slide bar 202 is slidably connected to the inner side of the sleeve 201, and is used to orient the moving direction of the slide bar 202, the driving mechanism 300 includes a connecting plate 301, a driving box 302 and a driving unit 303, the connecting plate 301 is used to support the driving box 302, and is arranged above the limit seat 103, the driving unit 303 cooperates with the driving box 302, the driving mechanism 300 also includes a driving shaft 304, a rotating disk 305, a boss 306 and a pull rod 307, the driving shaft 304 and the rotating disk 305 can be driven to rotate through the driving unit 303 and the driving box 302, the boss 306 is arranged at a central position away from the rotating disk 305, and is connected to the pull rod 307, and is used to drive the reciprocating movement of the pull rod 307; The elbow mechanism 400 includes a pull rod 401, a first hinge plate 402, a first connecting block 403, a first connecting rod 404, a second hinge plate 405 and a second connecting rod 406. The first hinge plate 402 is movably connected to both ends of the pull rod 401, and the pull rod 401 is movably connected to one end of the pull rod 307. The first connecting block 403 is connected to the side of the limit seat 103 and is movably connected to the side of the first hinge plate 402 through the first connecting rod 404. The pull rod 401 can pass through a position in the middle of the first hinge plate 402. The hinged hole connection can also be connected with the same center of the connecting rod 407. The second hinged plate 405 is movably connected to the side of the first hinged plate 402 which is symmetrically distributed in the upper and lower parts through the pull rod 401 and the second connecting rod 406. The elbow mechanism 400 also includes a middle connecting rod 407, a third hinged plate 408, a second connecting block 409 and a third connecting rod 410. The two ends of the middle connecting rod 407 are respectively movably connected to the third hinged plates 408 on both sides, and the third hinged plate 408 is movably connected to the second connecting block 409 through the third connecting rod 410.

[0026] The above structure is designed to start the driving mechanism 300 by controlling the button, and the driving unit 303 drives the driving shaft 304 and the rotating disk 305 to rotate in cooperation with the driving box 302. The boss 306 on the rotating disk 305 rotates, so that the push rod 307 makes a reciprocating linear motion, and the reciprocating motion of the pull rod 307 is transmitted to the pull rod 401 through the hinge connection, driving the toggle mechanism 400 to move.

[0027] Example 3, please refer to Figure 6, which is different from the second embodiment is that: the opening and closing mechanism 500 includes an opening and closing mold 501 and a slider 502, the opening and closing mold 501 is arranged at the end of the slide rod 202 and is located between the limit seat 103 and the side mold plate 104, and is used for closing and opening the sand core during the production process and after the production is completed, and the lifting mechanism 600 includes a mounting plate 601, a first telescopic rod 602, a top block 603, an oil pipe 604 and a second telescopic rod 605, the mounting plate 601 is "L"-shaped and is located below the support plate 101, when the sand core is completed, the opening and closing mold 501 moves in the mold opening direction, driving the second telescopic rod 605 to cooperate with the oil pipe 604 to drive the first telescopic rod 602 and the top block 603 to eject the sand core upward.

[0028] When the sand core is made, the mold opening and closing 501 moves in the mold opening direction, driving the second telescopic rod 605 and the oil inside it, in conjunction with the oil pipe 604, enters the first telescopic rod 602, thereby making the first telescopic rod 602 and the top block 603, thereby making the first telescopic rod 602, the top block 603 and the L-shaped rod 701 move upward. At this time, the L-shaped rod 701 moves upward and, with the cooperation of the connecting rod mechanism and the slide groove, drives the push rod 703 to move to the right, thereby achieving a two-way mold opening effect and ejecting the sand core upward. This setting can effectively transmit the power of the elbow mechanism 400 to the lifting mechanism 600, cleverly utilizing the movement of the opening and closing mechanism 500 in the mold opening direction, and directly driving the lifting mechanism 600 to automatically eject the sand core through the linkage of the driving mechanism 300 and the elbow mechanism 400.

[0029] Working principle: Figure 1-6 As shown, the driving mechanism 300 is first started by the control button, and the driving unit 303 drives the driving shaft 304 and the turntable 305 to rotate in cooperation with the driving box 302. The boss 306 on the turntable 305 rotates, so that the push rod 307 makes a reciprocating linear motion. The reciprocating motion of the pull rod 307 is transmitted to the pull rod 401 through the hinge connection, driving the elbow mechanism 400 to move. Since the elbow mechanism 400 is designed based on the lever principle, the smaller motion of the pull rod 307 can be amplified, thereby generating greater power, so as to achieve the mold-forming of the sand core. The larger mold-forming force can ensure the dimensional accuracy, strength and density of the sand core, and improve the quality of the sand core. Good sand core quality is the basis for ensuring the quality of castings and meeting the requirements of casting production. The elbow mechanism 400 can adapt to sand cores of different sizes and shapes, and adjust the size of the mold-forming force to meet the diverse core-making needs.

[0030] When the sand core is made, when the mold opening and closing 501 moves in the mold opening direction, it can drive the second telescopic rod 605 and the oil inside it, in conjunction with the oil pipe 604, enters the first telescopic rod 602, so that the first telescopic rod 602, the top block 603 and the L-shaped rod 701 move upward. At this time, the L-shaped rod 701 moves upward and drives the push rod 703 to move to the right side under the cooperation of the connecting rod mechanism and the slide groove, thereby achieving a two-way mold opening effect, and at the same time, the sand core can be pushed upward. When the sand core is pushed out, the device The device can effectively transmit the power of the elbow mechanism 400 to the lifting mechanism 600, and cleverly utilizes the opening and closing mechanism 500 and the linkage mechanism 700 to realize the movement in the two-way mold opening direction. Through the linkage of the driving mechanism 300 and the elbow mechanism 400, the lifting mechanism 600 is directly driven to automatically eject the sand core without additional driving components and operating steps, which simplifies the core making process, automatically ejects the sand core, reduces manual intervention, improves production efficiency, does not require additional driving components, and reduces the manufacturing cost and maintenance cost of the equipment.

[0031] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. In the description of the present invention, unless otherwise specified, "multiple" means two or more; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A toggle-type mold clamping mechanism for a fully electric core making machine, characterized in that: The invention comprises at least a driving mechanism (300), a toggle mechanism (400) and an opening and closing mechanism (500), wherein the driving mechanism (300) is connected and cooperated with the toggle mechanism (400) to drive the opening and closing mechanism (500) to close and open the mold during and after the production of the sand core to ensure the mold closing force and dimensional accuracy, so that the toggle mechanism (400) is substantially horizontal and within the range of 0 to 10 degrees.

2. The toggle-type mold clamping mechanism of the all-electric core making machine according to claim 1, characterized in that: It also includes a supporting mechanism (100) and a guiding mechanism (200), wherein the supporting mechanism (100) is used to support the guiding mechanism (200) and the driving mechanism (300).

3. The toggle-type mold clamping mechanism of the all-electric core making machine according to claim 2, characterized in that: The support mechanism (100) comprises a support plate (101), a guide rail (102), a limiting seat (103), a side template (104) and a reinforcing plate (105); the guide rail (102) is arranged in parallel above the support plate (101) and is used for directional movement of the opening and closing mechanism (500); the limiting seat (103) is arranged at one end of the guide rail (102) and is used for limiting the position of the guide mechanism (200); the side template (104) is located at the other end of the guide rail (102); and the reinforcing plate (105) is symmetrically installed on one side of the side template (104).

4. The toggle-type mold clamping mechanism of the all-electric core making machine according to claim 3, characterized in that: The guide mechanism (200) comprises a sleeve (201) and a sliding rod (202); the sleeve (201) is used to limit the position of the sliding rod (202) and passes through the limiting seat (103); the sliding rod (202) is slidably connected to the inner side of the sleeve (201) and is used to orient the moving direction of the sliding rod (202).

5. The toggle-type mold clamping mechanism of the all-electric core making machine according to claim 3, characterized in that: The driving mechanism (300) comprises a connecting plate (301), a driving box (302) and a driving unit (303); the connecting plate (301) is used to support the driving box (302) and is arranged above the limiting seat (103); and the driving unit (303) cooperates with the driving box (302).

6. The toggle-type mold clamping mechanism of the all-electric core making machine according to claim 5, characterized in that: The driving mechanism (300) further comprises a driving shaft (304), a rotating disk (305), a boss (306) and a pull rod (307); the driving shaft (304) and the rotating disk (305) can be driven to rotate by cooperating with the driving box (302) through the driving unit (303); the boss (306) is arranged at a central position away from the rotating disk (305) and is connected to the pull rod (307) to drive the pull rod (307) to reciprocate.

7. A toggle-type mold clamping mechanism of a fully electric core making machine according to claim 3 or 6, characterized in that: The elbow mechanism (400) includes a pull rod (401), a first hinge plate (402), a first connecting block (403), a first connecting rod (404), a second hinge plate (405) and a second connecting rod (406). The first hinge plate (402) is movably connected to both ends of the pull rod (401), and the pull rod (401) is movably connected to one end of the pull rod (307). The first connecting block (403) is connected to the side of the limit seat (103) and is movably connected to the side of the first hinge plate (402) through the first connecting rod (404). The second hinge plate (405) is movably connected to the side of the first hinge plate (402) symmetrically distributed above and below through the pull rod (401) and the second connecting rod (406). The pull rod (401) can be connected through a reaming hole at a position in the middle of the first hinge plate (402), or it can be connected to the same center as the connecting rod (407).

8. The toggle-type mold clamping mechanism of the all-electric core making machine according to claim 1, characterized in that: The toggle mechanism (400) further comprises a middle connecting rod (407), a third hinged plate (408), a second connecting block (409) and a third connecting rod (410), wherein two ends of the middle connecting rod (407) are movably connected to the third hinged plates (408) on both sides respectively, and the third hinged plate (408) is movably connected to the second connecting block (409) via the third connecting rod (410).

9. The toggle-type mold clamping mechanism of the all-electric core making machine according to claim 3 or 4, characterized in that: The opening and closing mechanism (500) comprises an opening and closing mold (501) and a slide block (502); the opening and closing mold (501) is arranged at the end of the slide bar (202) and is located between the limit seat (103) and the side mold plate (104), and is used for closing and opening the mold of the sand core during the production process and after the production is completed.

10. The toggle-type mold clamping mechanism of the all-electric core making machine according to claim 9, characterized in that: It also includes a lifting mechanism (600), and when the opening and closing mechanism (500) performs linear motion in the mold opening direction, the lifting mechanism (600) can be driven to eject the completed sand core; The lifting mechanism (600) comprises a mounting plate (601), a first telescopic rod (602), a lifting block (603), an oil pipe (604) and a second telescopic rod (605); the mounting plate (601) is in an "L" shape and is located below the support plate (101); When the sand core is manufactured, the mold opening and closing (501) moves in the mold opening direction, driving the second telescopic rod (605) to cooperate with the oil pipe (604) to drive the first telescopic rod (602) and the ejector block (603) to eject the sand core upward.

11. The toggle-type mold clamping mechanism of the all-electric core making machine according to claim 10, characterized in that: It also includes a linkage mechanism (700), the linkage mechanism (700) including an L-shaped rod (701) installed at the bottom of the top block (603), the L-shaped rod (701) being movably connected to a connecting rod mechanism (702) via a sliding groove, and a push rod (703) being installed at one end above the connecting rod mechanism (702).

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