Molding machining casting mechanism for low-stress castings for vehicles

Abstract

The invention discloses a forming machining casting mechanism for a vehicle low-stress casting, and relates to the technical field of casting machining and casting, the forming machining casting mechanism comprises a casting fixed mold and a fixing frame which are fixedly installed on an equipment rack, and the fixing frame is fixedly connected with a pushing air cylinder; the output end of the pushing air cylinder is fixedly connected with a casting movable mold corresponding to the casting fixed mold in position, a limiting rod is fixedly connected between the casting fixed mold and the fixing frame, and the two sides of the casting movable mold are slidably connected with the limiting rod. According to the forming machining casting mechanism for the low-stress casting for the vehicle, when the height of the upper surface of an abutting frame is gradually increased, a gas pushing plate slides upwards in a mounting box to extrude gas on the upper side of an inner cavity of the mounting box, the gas is sprayed out from a gas outlet connected to a communicating gas chamber in a penetrating mode, and the sprayed gas can directly act on a containing groove and the surface of a cavity of a casting movable mold; and impurities such as metal chippings and oxide skin remaining on the surface of the cavity are blown away.

Description

Technical Field

[0001] This invention relates to the field of casting technology, specifically to a forming and casting mechanism for low-stress automotive castings. Background Technology

[0002] In the automotive manufacturing industry, the performance requirements for castings are becoming increasingly stringent, especially the low-stress characteristics. Low-stress castings can effectively reduce the risk of deformation and cracking during use, and improve the service life and reliability of automotive parts.

[0003] To overcome the aforementioned defects, existing technology 1 (Chinese Patent No. CN218799066U, Publication Date: 2023-04-07) provides a casting processing apparatus. This addresses the issue that in existing casting apparatuses, when the material feeding structure encounters molten metal, metal residue easily accumulates at the bottom of the inner cavity. If not cleaned promptly, this residue may mix with other solutions during subsequent processing, reducing solution purity and affecting production. Therefore, personnel must clean the residue from the feeding structure after each use, increasing their workload. The new technology addresses this by providing a detachable mounting plate at the bottom of the casting equipment body, offering personnel an alternative cleaning method. This design can significantly reduce cleaning steps for personnel when they are fatigued or have a heavy workload.

[0004] There is also a prior art (Chinese patent with publication number CN116037870A and publication date of 2023-05-02) which is a metal casting equipment for casting processing. It belongs to the field of metal casting technology. In order to solve the problem that in the process of mass production of existing casting equipment, the casting, cooling, demolding and unloading processes often need to be carried out separately, resulting in low overall work efficiency, the prior art integrates the four steps of casting, cooling, demolding and unloading. It can realize continuous casting, high work efficiency and relatively simple control.

[0005] In traditional casting mechanisms, inaccurate mold positioning during mold closing can lead to dimensional deviations in the cavity, resulting in uneven stress on the molten metal during filling and solidification, causing stress concentration. Forced ejection during demolding can further compress or pull on the casting, exacerbating stress. Furthermore, after repeated use, the mold cavity surface easily accumulates metal debris, oxide scale, and other impurities. Failure to clean these promptly not only affects the surface quality of the casting but may also introduce additional stress sources during casting. Therefore, developing a casting mechanism that can effectively control stress generation and improve casting quality during the casting process is of significant practical importance.

[0006] Therefore, we propose a forming and casting mechanism for low-stress automotive castings to address the problems mentioned above. Summary of the Invention

[0007] The purpose of this invention is to provide a molding and casting mechanism for low-stress automotive castings, in order to solve the problem mentioned in the background art that after repeated use, the surface of the mold cavity in the market is prone to residual metal debris, oxide scale and other impurities. If not cleaned in time, it will not only affect the surface quality of the casting, but may also introduce additional stress sources during the casting process.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a casting mechanism for forming and processing low-stress automotive castings, comprising a casting fixed mold and a fixed frame fixedly installed on an equipment frame, wherein a pushing cylinder is fixedly connected to the fixed frame, and a casting moving mold corresponding to the position of the casting fixed mold is fixedly connected to the output end of the pushing cylinder, a limiting rod is fixedly connected between the casting fixed mold and the fixed frame, the two sides of the casting moving mold are slidably connected to the limiting rod, a contact frame is fixedly connected to the upper side of the equipment frame, and an air supply mechanism is provided between the contact frame and the casting moving mold, the air supply mechanism realizing air blowing and dust removal treatment on the inner side of the casting moving mold by the position movement of the casting moving mold, and an ejection mechanism is provided between the casting moving mold and the contact frame, the ejection mechanism driving the ejector rod to move by the moving force of the casting moving mold away from the casting moving mold, realizing auxiliary demolding of the formed casting.

[0009] Preferably, the air supply mechanism includes a mounting box, which is fixedly connected to the side of the casting moving mold, and a pusher plate is slidably connected inside the mounting box, with the side of the pusher plate fitting against the side of the inner cavity of the mounting box, and an abutment block is fixedly connected to the lower surface of the pusher plate.

[0010] Preferably, the abutment block is connected through to the lower side of the mounting box, and the lower ends of the abutment block are arranged in an arc shape on both sides. A first spring is fixedly connected between the lower surface of the air pusher plate and the inner cavity of the mounting box.

[0011] Preferably, the contact frame is arranged in a tortuous structure, and the lower surface of the contact block is located on the upper surface of the contact frame and is in contact with the upper surface of the contact frame. A connecting pipe is connected through the upper side of the mounting box, and the connecting pipe extends into the interior of the casting moving mold. The contact action between the contact frame and the contact block drives the push plate to move upward and compresses the gas in the mounting box.

[0012] Preferably, the casting moving mold has a receiving groove, and a communicating air chamber is fixedly connected inside the casting moving mold. The communicating air chamber is connected to a communicating pipe, and an air outlet is connected through the communicating air chamber, with the air outlet designed to face the inside of the receiving groove.

[0013] Preferably, the ejection mechanism includes a movable cavity, and a fixed plate is slidably connected inside the movable cavity. A push rod is fixedly connected to one side of the fixed plate. The push rod corresponds to the position of the storage slot and is slidably connected to the storage slot.

[0014] Preferably, a second spring is fixedly connected between the other side of the fixed plate and the inner wall of the movable cavity. When the casting moving mold is in a lateral movement state, the end of the push rod is located inside the receiving groove and does not block the air outlet.

[0015] Preferably, a fixed rod is fixedly connected to the fixed frame, and a drive rod is fixedly connected to the fixed plate. The drive rod is slidably connected to the rear side of the casting moving mold. The drive rod drives the fixed plate to move towards the casting fixed mold side through the abutment action of the fixed rod.

[0016] Preferably, an electromagnetic plate is fixedly connected to the inner side of the movable cavity, and a magnetic plate is fixedly connected to the fixed plate. The magnetic plate has the same magnetism as the electromagnetic plate in the energized state. When the electromagnetic plate is energized, the outer end of the push rod is flush with the cavity surface of the casting moving mold.

[0017] Compared with the prior art, the beneficial effects of the present invention are: A limit rod is provided. When the cylinder drives the casting moving mold to close or open, the two sides of the casting moving mold will slide along the limit rod. The limit rod provides precise guidance for the movement of the casting moving mold, effectively preventing the casting moving mold from deviating or shaking during the movement. This ensures that the casting moving mold and the casting fixed mold can be accurately aligned, guaranteeing the mold closing accuracy. This helps to ensure the accuracy of the cavity dimensions, making the molten metal more evenly stressed during filling and solidification, reducing stress concentration caused by inaccurate mold closing, and thus improving the forming quality and low-stress characteristics of the casting.

[0018] When the casting moving mold moves laterally, the arc-shaped structure at the lower end of the abutment block slides along the curved upper surface of the abutment frame. As the height of the upper surface of the abutment frame gradually increases, the pusher plate slides upward in the mounting box. During the upward movement of the pusher plate, it compresses the gas on the upper side of the mounting box cavity. The compressed gas is transported to the connecting air chamber inside the casting moving mold through the connecting pipe. Subsequently, the gas is ejected from the air outlet connected through the connecting air chamber. The ejected gas can directly act on the receiving groove and the cavity surface of the casting moving mold, effectively blowing away the metal chips, oxide scale and other impurities remaining on the cavity surface, preventing these impurities from affecting the surface quality of the casting or becoming an additional stress source during the subsequent casting process.

[0019] During the mold opening process, the gas supplied from the air outlet can also blow air and apply pressure to the casting, causing a tiny gap to form between the casting and the cavity surface of the moving mold, reducing the adhesion between the casting and the mold, and preparing for subsequent ejection and demolding.

[0020] As the moving mold continues to move, the fixed rod exerts a counteracting force on the drive rod, causing the drive rod and the fixed plate to slide towards the fixed mold in the moving cavity. At this time, the second spring is stretched, and the ejector rod on the fixed plate slides out from the receiving groove. The end of the ejector rod contacts the casting and applies a pushing force to it, thereby smoothly ejecting the casting from the cavity of the moving mold.

[0021] The electromagnetic plate fixedly connected to the inner side of the movable cavity works in conjunction with the magnetic plate fixedly connected to the fixed plate. During the mold closing and casting process of the casting moving mold, the electromagnetic plate is energized. At this time, the magnetic plate and the electromagnetic plate generate a repulsive force due to their similar magnetism. This repulsive force acts on the fixed plate, overcoming the tension of the second spring, so that the fixed plate drives the ejector rod to stay inside the receiving groove. The outer end of the ejector rod is flush with the cavity surface of the casting moving mold, ensuring that the ejector rod will not interfere with or leave marks on the forming surface of the casting during the filling and solidification of the molten metal. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the casting mold of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the casting moving mold of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 For the present invention Figure 3 Enlarged structural diagram at point B; Figure 6 This is a three-dimensional cross-sectional view of the casting moving mold of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the fixing rod of the present invention; Figure 8 For the present invention Figure 7 Enlarged structural diagram at point C; Figure 9 This is a schematic diagram of the three-dimensional structure of the magnetic plate of the present invention.

[0023] In the diagram: 1. Casting fixed mold; 2. Casting moving mold; 3. Fixing frame; 4. Limiting rod; 5. Abutting frame; 6. Mounting box; 7. Abutting block; 8. Push plate; 9. Push cylinder; 10. Storage slot; 11. Movable cavity; 12. Connecting pipe; 13. First spring; 14. Connecting air chamber; 15. Air outlet; 16. Push rod; 17. Fixing plate; 18. Electromagnetic plate; 19. Magnetic plate; 20. Second spring; 21. Fixing rod; 22. Drive rod. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Example 1: As Figure 1 and Figure 2 The present invention provides the following technical solution: a casting mechanism for forming and processing low-stress castings for automobiles, comprising a casting fixed mold 1 and a fixed frame 3 fixedly installed on the equipment frame, a push cylinder 9 fixedly connected to the fixed frame 3, and a casting moving mold 2 corresponding to the position of the casting fixed mold 1 fixedly connected to the output end of the push cylinder 9, a limit rod 4 fixedly connected between the casting fixed mold 1 and the fixed frame 3, and the two sides of the casting moving mold 2 slidably connected to the limit rod 4.

[0026] A limiting rod 4 is provided. When the cylinder 9 drives the casting moving mold 2 to perform mold closing or opening actions, the two sides of the casting moving mold 2 can slide stably along the limiting rod 4. The limiting rod 4 provides rigid guiding constraint for the movement of the casting moving mold 2. This precise guiding mechanism effectively eliminates problems such as lateral offset, longitudinal sway, and angular deflection that may occur during the movement of the casting moving mold 2. This ensures that the casting moving mold 2 and the casting fixed mold 1 can achieve millimeter-level precise docking when the mold is closed. When the high-temperature molten metal is injected into the cavity, it can be uniformly filled in the preset space, so that the shrinkage of each part of the molten metal during solidification can be uniform. This significantly reduces the stress concentration phenomenon caused by uneven force, laying a solid foundation for obtaining low-stress castings.

[0027] Example 2: Figure 3 - Figure 6 and Figure 8 The present invention provides the following technical solution: a forming and casting mechanism for low-stress automotive castings, which discloses: A contact frame 5 is fixedly connected to the upper side of the equipment frame, and an air supply mechanism is provided between the contact frame 5 and the casting moving mold 2. The air supply mechanism achieves air blowing and dust removal treatment on the inner side of the casting moving mold 2 by moving the position of the casting moving mold 2. The air supply mechanism includes a mounting box 6, which is fixedly connected to the side of the casting moving mold 2. An air pusher plate 8 is slidably connected inside the mounting box 6, and the side of the air pusher plate 8 is in contact with the side of the inner cavity of the mounting box 6. A contact block 7 is fixedly connected to the lower surface of the air pusher plate 8, and the contact block 7 is connected through to the lower side of the mounting box 6. The lower ends of the contact block 7 are arc-shaped on both sides. A first spring 13 is fixedly connected between the lower surface of the air pusher plate 8 and the inner cavity of the mounting box 6. The contact frame 5 is arranged in a zigzag shape, and the lower surface of the contact block 7 is located on the upper surface of the contact frame 5 and is in contact with the upper surface of the contact frame 5. The upper side of the mounting box 6 is connected to a connecting pipe 12, which extends into the interior of the casting moving mold 2. The contact action between the contact frame 5 and the contact block 7 drives the air push plate 8 to move upward and compress the gas in the mounting box 6. The casting moving mold 2 has a storage groove 10, and a connecting air chamber 14 is fixedly connected inside the casting moving mold 2. The connecting air chamber 14 is connected to the connecting pipe 12. An air outlet 15 is connected through the connecting air chamber 14 and is designed to face the inside of the storage groove 10.

[0028] When the casting moving mold 2 moves laterally under the drive of the push cylinder 9, the mounting box 6 installed on its side moves synchronously with the casting moving mold 2. The lower surface of the push plate 8, which is slidably connected inside the mounting box 6, is fixedly connected to the abutment block 7. The arc-shaped structures on both sides of the lower end of the abutment block 7 are always in close contact with the curved upper surface of the abutment frame 5 fixed on the equipment frame. As the casting moving mold 2 moves, the arc-shaped structure at the lower end of the abutment block 7 slides along the undulating surface of the abutment frame 5. When the height of the upper surface of the abutment frame 5 gradually increases, it will apply an upward pushing force to the abutment block 7, thereby... The push plate 8 overcomes the elastic tension of the first spring 13 and slides upward within the mounting box 6. During its upward movement, the push plate 8 compresses the air on the upper side of the inner cavity of the mounting box 6, giving this gas a certain pressure. The compressed gas is then transported through the connecting pipe 12 that runs through the upper side of the mounting box 6 to the connecting air chamber 14 fixedly connected inside the casting moving mold 2. Since the air outlet 15 that runs through the connecting air chamber 14 is designed to face the inside of the receiving groove 10 opened on the casting moving mold 2, gas with a certain pressure will flow out from the outlet. The high-speed jet from nozzle 15 directly impacts the inner wall of the receiving tank 10 and the cavity surface of the casting moving mold 2. Tiny impurities such as metal shavings, oxide scale, and release agent residue remaining on the cavity surface are effectively blown away by the high-speed airflow, ensuring the cavity surface remains clean before each casting. This prevents these impurities from embedding into the casting surface during subsequent molten metal filling, affecting the surface finish of the casting, or forming inclusions, porosity, or other defects inside the casting. Furthermore, it prevents these defects from becoming stress concentration points during use. During mold opening, the casting moving mold 2 is kept away from... When casting the fixed mold 1, if the abutment block 7 is located in the high position area of ​​the abutment frame 5, the air outlet 15 will continuously spray gas. This gas can not only continue to clean the cavity, but also apply a certain air pressure to the surface of the casting that has just been formed and whose temperature has not completely dropped. This causes a small gap to be generated between the casting and the cavity surface of the moving mold 2, effectively reducing the adhesion force and vacuum adsorption effect between the casting and the mold cavity surface. This creates favorable conditions for the subsequent ejection and demolding process, avoids cracks or deformation of the casting caused by forced demolding, and further ensures the low stress characteristics of the casting.

[0029] Example 3: Figure 6 , Figure 7 and Figure 9The present invention provides the following technical solution: a molding and casting mechanism for low-stress automotive castings, wherein an ejector mechanism is provided between the casting moving mold 2 and the contact frame 5. The ejector mechanism drives the ejector rod 16 to move by the moving force of the casting moving mold 2 moving away from the casting moving mold 2, thereby assisting in demolding the formed casting. The ejector mechanism includes a movable cavity 11, and a fixed plate 17 is slidably connected inside the movable cavity 11. The ejector rod 16 is fixedly connected to one side of the fixed plate 17. The ejector rod 16 is in a first position corresponding to the receiving groove 10, and the ejector rod 16 is slidably connected to the receiving groove 10. A second spring 2 is fixedly connected between the other side of the fixed plate 17 and the inner wall of the movable cavity 11. 0. When the casting moving mold 2 is in a lateral movement state, the end of the ejector rod 16 is located inside the receiving groove 10 and does not block the air outlet 15. A fixed rod 21 is fixedly connected to the fixed frame 3, and a drive rod 22 is fixedly connected to the fixed plate 17. The drive rod 22 is slidably connected to the rear side of the casting moving mold 2. The drive rod 22 drives the fixed plate 17 to move towards the casting fixed mold 1 through the abutment of the fixed rod 21. An electromagnetic plate 18 is fixedly connected to the inner side of the movable cavity 11, and a magnetic plate 19 is fixedly connected to the fixed plate 17. The magnetic plate 19 has the same magnetism as the electromagnetic plate 18 in the energized state. When the electromagnetic plate 18 is energized, the outer end of the ejector rod 16 is flush with the cavity surface of the casting moving mold 2.

[0030] During the critical stage of mold closing and casting of the moving mold 2, the electromagnetic plate 18 fixedly connected to the inner side of the movable cavity 11 is continuously energized. At this time, the magnetic plate 19 fixedly connected to the fixed plate 17 and the electromagnetic plate 18 generate a strong repulsive force due to their similar magnetism. This repulsive force acts directly on the fixed plate 17, and the resulting thrust overcomes the natural tension of the second spring 20, thereby stably holding the fixed plate 17 in the movable cavity 11 on the side away from the fixed mold 1. The ejector rod 16 fixedly connected to the fixed plate 17 can then be completely stored inside the receiving groove 10. Its outer end is precisely flush with the cavity surface of the moving mold 2, ensuring that the ejector rod 16 will not protrude from the cavity surface during the filling of the cavity with high-temperature molten metal and the subsequent solidification process. This will not cause any form of interference to the forming surface of the casting, nor will it leave any marks or pits on the surface of the casting, thus ensuring the integrity and smoothness of the casting surface and avoiding stress concentration that may be caused by surface defects.

[0031] When casting is completed, the mold opening process begins. The casting moving mold 2 starts to move away from the casting fixed mold 1 under the action of the pushing cylinder 9. When the casting moving mold 2 moves to a specific position, the free end of the drive rod 22 fixed on the fixed plate 17 will abut against the end of the fixed rod 21 fixedly connected on the fixed frame 3. As the casting moving mold 2 continues to move, since the fixed rod 21 is fixed, it will generate a reverse abutment force on the drive rod 22. This force drives the drive rod 22, along with the fixed plate 17 fixed thereto, to slide towards the casting mold 1 within the movable cavity 11. The fixed plate 17 stretches the second spring 20, storing elastic potential energy. The sliding of the fixed plate 17 directly drives the ejector rod 16 to slide smoothly out of the receiving groove 10. The end of the ejector rod 16 precisely contacts the non-critical surface of the casting and applies a uniform and continuous pushing force to it. In this way, the casting can be smoothly and reliably ejected from the cavity of the casting moving mold 2, avoiding casting deformation or increased internal stress that may be caused by poor demolding.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A casting mechanism for forming and processing low-stress castings for automobiles, comprising a casting fixed mold (1) and a fixed frame (3) fixedly mounted on a machine frame, wherein a push cylinder (9) is fixedly connected to the fixed frame (3), and a casting moving mold (2) corresponding to the position of the casting fixed mold (1) is fixedly connected to the output end of the push cylinder (9), characterized in that, The casting fixed mold (1) is fixedly connected to the fixed frame (3) with a limiting rod (4). The two sides of the casting moving mold (2) are slidably connected to the limiting rod (4). A contact frame (5) is fixedly connected to the upper side of the equipment frame. An air supply mechanism is provided between the contact frame (5) and the casting moving mold (2). The air supply mechanism realizes the blowing and dust removal treatment of the inner side of the casting moving mold (2) by the position movement of the casting moving mold (2). An ejection mechanism is provided between the casting moving mold (2) and the contact frame (5). The ejection mechanism drives the ejector rod (16) to move by the moving force of the casting moving mold (2) away from the casting moving mold (2), so as to realize the auxiliary demolding of the formed casting.

2. The forming and casting mechanism for low-stress automotive castings according to claim 1, characterized in that: The air supply mechanism includes a mounting box (6), which is fixedly connected to the side of the casting moving mold (2), and a pusher plate (8) is slidably connected inside the mounting box (6), and the side of the pusher plate (8) is in contact with the side of the inner cavity of the mounting box (6). An abutment block (7) is fixedly connected to the lower surface of the pusher plate (8).

3. The forming and casting mechanism for low-stress automotive castings according to claim 2, characterized in that: The contact block (7) is connected through to the lower side of the mounting box (6), and the lower ends of the contact block (7) are arranged in an arc shape. The lower surface of the air pusher (8) is fixedly connected to the inner cavity of the mounting box (6) by a first spring (13).

4. The forming and casting mechanism for low-stress automotive castings according to claim 3, characterized in that: The contact frame (5) is arranged in a tortuous structure, and the lower surface of the contact block (7) is located on the upper surface of the contact frame (5) and is in contact with the upper surface of the contact frame (5). A connecting pipe (12) is connected through the upper side of the mounting box (6), and the connecting pipe (12) extends into the interior of the casting moving mold (2). The contact action between the contact frame (5) and the contact block (7) drives the air pusher (8) to move upward and compresses the gas in the mounting box (6).

5. The forming and casting mechanism for low-stress automotive castings according to claim 4, characterized in that: The casting moving mold (2) is provided with a storage groove (10), and a connecting air chamber (14) is fixedly connected inside the casting moving mold (2). The connecting air chamber (14) is connected to the connecting pipe (12). An air outlet (15) is connected through the connecting air chamber (14), and the air outlet (15) is designed to face the inside of the storage groove (10).

6. The forming and casting mechanism for low-stress automotive castings according to claim 5, characterized in that: The ejection mechanism includes a movable cavity (11), and a fixed plate (17) is slidably connected inside the movable cavity (11). A push rod (16) is fixedly connected to one side of the fixed plate (17). The push rod (16) is in a first position corresponding to the storage groove (10), and the push rod (16) is slidably connected to the storage groove (10).

7. The forming and casting mechanism for low-stress automotive castings according to claim 6, characterized in that: A second spring (20) is fixedly connected between the other side of the fixed plate (17) and the inner wall of the movable cavity (11). When the casting moving mold (2) is in a lateral movement state, the end of the push rod (16) is located inside the receiving groove (10) and does not block the air outlet (15).

8. The forming and casting mechanism for low-stress automotive castings according to claim 8, characterized in that: A fixed rod (21) is fixedly connected to the fixed frame (3), and a drive rod (22) is fixedly connected to the fixed plate (17). The drive rod (22) is slidably connected to the rear side of the casting moving mold (2). The drive rod (22) drives the fixed plate (17) to move toward the casting fixed mold (1) through the abutment action of the fixed rod (21).

9. The forming and casting mechanism for low-stress automotive castings according to claim 8, characterized in that: An electromagnetic plate (18) is fixedly connected to the inner side of the active cavity (11), and a magnetic plate (19) is fixedly connected to the fixed plate (17). The magnetic plate (19) and the electromagnetic plate (18) in the energized state have the same magnetism. When the electromagnetic plate (18) is in the energized state, the outer end of the push rod (16) is flush with the cavity surface of the casting moving mold (2).

Images