An intelligent core molding tool for adapting a steel ingot casting mold and a molding method thereof

Abstract

The application relates to the technical field of core casting, in particular to an intelligent core molding tool matched with a steel ingot casting mold and a molding method thereof, which comprises a lower mold, a positioning column connected to the lower mold, an upper mold and a positioning hole formed in the upper mold, the positioning column is in plug-in cooperation with the positioning hole, a core rod is plugged into the upper mold, an elastic sealing mechanism matched with the lower mold and the upper mold is arranged on the core rod, a rotary positioning assembly is arranged in the upper mold and connected with the core rod, and is used for locking the angle of the core rod, a guide limiting mechanism is arranged in the upper mold and connected with the core rod, a misalignment locking assembly connected with the guide limiting mechanism is arranged on the core rod, the position of the core rod can be locked through cooperation of the guide limiting mechanism and the misalignment locking assembly, and when demolding is completed after casting and molding, the core rod is controlled to rotate through the rotary positioning assembly, so that the core rod and the steel ingot are separated.

Description

Technical Field

[0001] This invention relates to the field of core casting technology, specifically to an intelligent core molding tooling and molding method adapted to steel ingot casting molds. Background Technology

[0002] Steel ingot casting is a fundamental step in the field of metal processing and is widely used in industries such as machinery manufacturing, automotive, and aerospace. During the casting process, for steel ingots that need to form a hollow structure, a core must be used to form the inner cavity of the casting.

[0003] The function of the core molding fixture is to precisely fix the mandrel in a predetermined position within the mold cavity, so that the molten steel forms a hollow structure that meets the dimensional requirements after solidification.

[0004] In existing technologies, the mandrel is usually assembled first, followed by mold closing and subsequent casting. However, during mandrel installation, it is usually only possible to ensure that the mandrel is centered in the upper mold. When the upper and lower molds are closed, the mandrel is simply inserted into the lower mold. The axis of the mandrel may deviate from the center of the mold cavity, resulting in uneven wall thickness of the casting. Furthermore, during demolding, metallurgical bonding or mechanical interlocking occurs between the mandrel and the solidified steel ingot, resulting in extremely high demolding resistance. If demolding is forced directly, scratches, marks, or even cracks may easily occur on the inner surface of the steel ingot. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent core molding tooling and molding method adapted to steel ingot casting molds, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An intelligent core molding tooling adapted to steel ingot casting molds includes:

[0008] The lower mold, and the positioning pins connected to the lower mold;

[0009] The upper mold and the positioning holes formed on the upper mold, with the positioning pins and positioning holes being inserted into each other;

[0010] Also includes:

[0011] A mandrel is inserted into the upper mold, and the mandrel is provided with an elastic sealing mechanism that cooperates with the lower mold and the upper mold;

[0012] A rotary positioning component is disposed within the upper mold and connected to the mandrel, for locking the angle of the mandrel;

[0013] A guide limiting mechanism is disposed within the upper mold and connected to the mandrel. The mandrel is provided with a misalignment locking component connected to the guide limiting mechanism. The guide limiting mechanism can move when the mandrel is inserted into the upper mold and lock the position of the mandrel through the misalignment locking component.

[0014] As a further aspect of the present invention: the elastic sealing mechanism includes a tapered hole formed inside the lower mold, the end of the mandrel is connected to a tapered block that abuts against the tapered hole, and a tapered groove is formed inside the upper mold.

[0015] As a further embodiment of the present invention: the elastic sealing mechanism further includes a fixing plate connected to the mandrel, a support rod slidably mounted on the fixing plate, a fixing ring and a conical disk connected to the support rod, the conical disk abutting against the conical groove, and a second spring sleeved on the support rod, the two ends of the second spring abutting against the fixing ring and the fixing plate respectively.

[0016] As a further embodiment of the present invention: the rotary positioning assembly includes a fixed sleeve connected to the upper mold, the outer circumferential wall of the fixed sleeve is formed with a guide groove, the outer circumferential wall of the mandrel is connected with a first limiting post, and the first limiting post is slidably engaged with the guide groove.

[0017] As a further embodiment of the present invention: the guiding and limiting mechanism includes a partition plate connected to the upper mold, a rotating tube rotatably mounted on the partition plate, a guide groove formed on the inner wall of the rotating tube, and a second limiting post connected to the outer circumference of the mandrel and slidably fitted with the guide groove;

[0018] It also includes a follower assembly and a support assembly disposed on the partition and connected to the rotating tube.

[0019] As a further embodiment of the present invention: the follower component includes a second spiral groove formed on the outer circumference of the rotating tube, a sliding ring slidingly disposed on the axial side of the rotating tube, and a limiting block connected to the inner wall of the sliding ring and slidingly engaging with the second spiral groove.

[0020] As a further embodiment of the present invention: the support assembly includes a guide post connected to the partition plate, the guide post having a connecting plate slidably connected to the sliding ring along its axial direction, and a first spring sleeved on the guide post, the two ends of the first spring abutting against the connecting plate and the partition plate respectively.

[0021] As a further embodiment of the present invention: the misalignment locking assembly includes a limiting disk connected inside the rotating tube, a limiting groove is formed on the limiting disk, a limiting plate is connected to the mandrel, the limiting plate can pass through the limiting groove and abut against the limiting disk.

[0022] As a further embodiment of the present invention: the upper mold is connected to symmetrically distributed cylinders, and the telescopic end of the cylinder is connected to a pressure plate, the pressure plate and the connecting plate abutting against each other.

[0023] A modeling method for an intelligent core modeling fixture adapted to steel ingot casting molds includes the following steps:

[0024] Step 1: Insert the mandrel into the upper mold and lock the angle of the mandrel under the action of the rotary positioning component;

[0025] Step 2: Simultaneously, under the action of the guide limiting mechanism, the misalignment locking component moves, thereby locking the position of the mandrel. When the upper mold and the lower mold are closed, the upper mold and the lower mold are sealed and positioned under the action of the elastic sealing mechanism.

[0026] Step 3: Molten steel is poured into the cavity formed by the upper and lower molds, and under the action of the mandrel, a hollow steel tube is formed;

[0027] Step 4: After the steel pipe cools down, control the separation of the upper and lower molds and remove the mandrel from the steel pipe. Under the action of the rotating positioning component, the mandrel rotates and separates from the steel pipe.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] In the process of inserting the mandrel into the upper mold, the conical disk first contacts the conical groove. Under the guidance of the conical surface, the mandrel is automatically centered to a position coaxial with the fixed sleeve. At the same time, when the upper and lower molds are closed, the mandrel is further centered by the cooperation of the conical block and the conical hole, ensuring the consistency between the mandrel axis and the center of the mold cavity, thus ensuring the uniformity of the casting wall thickness.

[0030] When the mandrel is inserted to the set depth, after the limiting plate passes through the limiting groove, the first spring elastically releases and drives the rotating tube to rotate in the opposite direction, so that the limiting groove and the limiting plate form a 90° misalignment and locking. At the same time, the continuous thrust of the first spring keeps the limiting plate and the limiting plate pressed together, applying a preload force to the mandrel in the direction of release. During the mold closing process, the upper mold continues to press down, further compressing the first spring. The pressure is transmitted to the limiting plate through the rotating tube and the limiting plate, and then the mandrel enhances the contact pressure between the conical plate and the conical groove. Even under the action of thermal expansion and buoyancy, the mandrel cannot be displaced in the axial direction, ensuring the dimensional accuracy of the inner hole forming.

[0031] During mold separation, the upper mold moves upward, the first spring is released elastically to keep the initial position of the mandrel unchanged, and the first limiting post slides along the corrugated groove, driving the mandrel itself to generate reciprocating rotational motion. In this way, the mandrel and the solidified inner wall of the steel ingot first undergo relative motion, breaking the metallurgical bond and mechanical interlock between the two, thus achieving release. Only after the limiting disc and the limiting plate abut against each other is the mandrel pulled upward, avoiding the tearing and scratching of the inner hole surface caused by direct pulling. Attached Figure Description

[0032] Figure 1 A schematic diagram of one embodiment of an intelligent core molding tooling adapted to steel ingot casting molds.

[0033] Figure 2 A schematic diagram of the lower mold structure in one embodiment of an intelligent core molding tooling adapted to steel ingot casting molds.

[0034] Figure 3 A schematic diagram of the upper mold and mandrel structure in one embodiment of an intelligent core molding tooling adapted to steel ingot casting molds.

[0035] Figure 4 A schematic diagram of the cross-sectional structure of the upper and lower molds in one embodiment of an intelligent core molding tooling adapted to steel ingot casting molds.

[0036] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0037] Figure 6 A schematic diagram of the internal structure of the lower and upper molds in one embodiment of an intelligent core molding tooling adapted to steel ingot casting molds.

[0038] Figure 7 A schematic diagram showing the connection relationship of the rotary positioning component, guide limiting mechanism, elastic sealing mechanism, and misalignment locking component in one embodiment of an intelligent core molding tooling adapted to steel ingot casting molds.

[0039] Figure 8 A schematic diagram of the elastic sealing mechanism in one embodiment of an intelligent core molding tooling adapted to steel ingot casting molds.

[0040] Figure 9 An exploded view of the guiding and limiting mechanism in one embodiment of an intelligent core molding tooling adapted to steel ingot casting molds.

[0041] Figure 10 An exploded structural diagram of part of the elastic sealing mechanism and misalignment locking component in one embodiment of an intelligent core molding tooling adapted to steel ingot casting molds.

[0042] In the diagram: 1. Lower mold; 101. Conical hole; 102. Positioning pin; 2. Upper mold; 201. Conical groove; 202. Positioning hole; 3. Partition plate; 4. Rotating tube; 401. First vertical groove; 402. First spiral groove; 403. Second vertical groove; 404. Second spiral groove; 5. Sliding ring; 501. Limiting block; 6. Connecting plate; 7. Guide pin; 8. First spring; 9. Limiting disc; 901. Limiting groove; 10. Cylinder; 11. Pressure plate; 12. Fixed sleeve; 1201. Arc groove; 1202. Third vertical groove; 1203. Corrugated groove; 13. Mandrel; 1301. Conical block; 14. Conical disc; 15. Support rod; 1501. Fixed ring; 16. Fixed plate; 17. Second spring; 18. Limiting plate; 19. First limiting pin; 20. Second limiting pin. Detailed Implementation

[0043] 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.

[0044] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0045] Please see Figures 1-10 In this embodiment of the invention, an intelligent core molding tooling adapted to steel ingot casting molds includes:

[0046] Lower mold 1, and positioning pin 102 connected to lower mold 1;

[0047] Upper mold 2, and positioning hole 202 formed on upper mold 2, positioning post 102 is inserted into positioning hole 202;

[0048] Also includes:

[0049] The mandrel 13 is inserted into the upper mold 2, and the mandrel 13 is provided with an elastic sealing mechanism that cooperates with the lower mold 1 and the upper mold 2.

[0050] A rotary positioning component is disposed within the upper mold 2 and connected to the mandrel 13, for locking the angle of the mandrel 13;

[0051] A guide limiting mechanism is disposed within the upper mold 2 and connected to the core rod 13. The core rod 13 is provided with a misalignment locking component connected to the guide limiting mechanism. The guide limiting mechanism can move when the core rod 13 is inserted into the upper mold 2 and lock the position of the core rod 13 through the misalignment locking component.

[0052] Specifically, during the production of steel ingots, a mandrel 13 needs to be placed inside a mold so that molten steel encases the mandrel 13, forming a hollow tube. To achieve this, when installing the mandrel 13, one end is inserted into the upper mold 2, and the angle of the mandrel 13 is locked by the rotation positioning component. Subsequently, the mandrel 13 controls the elastic sealing mechanism to seal the upper mold 2. Under the action of the guide limiting mechanism, when the mandrel 13 is inserted into the upper mold 2 to the designated position, the position of the mandrel 13 is restricted by the misalignment locking component. At this point, the upper mold 2 and lower mold 1 can be controlled to complete the mold closing action, and the other end of the mandrel 13 will be inserted into the lower mold 1, and... The lower mold 1 guides and positions the upper mold 2. After the mold is closed, molten steel can be injected into the cavity formed by the upper mold 2 and the lower mold 1. Under the action of the mandrel 13, the molten steel cools and forms a hollow tube in the cavity. After the molding is completed, the upper mold 2 and the lower mold 1 are separated. The upper mold 2 drives the rotating positioning component to move, so that the mandrel 13 performs a slight reciprocating rotation before it leaves the steel ingot, thus ensuring that the mandrel 13 separates from the steel ingot first. As the upper mold 2 continues to move, the mandrel 13 is controlled to move synchronously with the upper mold 2 through the misalignment locking component until the mandrel 13 completely leaves the steel ingot. At this time, the steel ingot can be taken out, and the casting of the steel ingot is completed.

[0053] Please see Figure 4 , Figures 6-8 The elastic sealing mechanism includes a tapered hole 101 formed inside the lower mold 1, a tapered block 1301 that abuts against the tapered hole 101 connected to the end of the mandrel 13, a tapered groove 201 formed inside the upper mold 2, and a fixing plate 16 connected to the mandrel 13. A support rod 15 is slidably mounted on the fixing plate 16. A fixing ring 1501 and a tapered disk 14 are connected to the support rod 15. The tapered disk 14 abuts against the tapered groove 201. A second spring 17 is sleeved on the support rod 15. The two ends of the second spring 17 abut against the fixing ring 1501 and the fixing plate 16, respectively.

[0054] Please see Figure 4 , Figure 6 , Figure 7The rotary positioning assembly includes a fixed sleeve 12 connected inside the upper mold 2. A guide groove is formed on the outer circumference of the fixed sleeve 12. A first limiting post 19 is connected to the outer circumference of the mandrel 13. The first limiting post 19 is slidably engaged with the guide groove.

[0055] In detail, the guide groove can be divided into three parts: two arc-shaped grooves 1201 that are equidistant from each other on the circumference, a third vertical groove 1202 that is connected to the arc-shaped grooves 1201, and a corrugated groove 1203 that is connected to the third vertical groove 1202.

[0056] In the initial state, the mandrel 13 and the upper mold 2 are separated, the distance between the conical disk 14 and the conical block 1301 is the largest, that is, the conical disk 14 is located at the end of the stroke in the direction close to the fixed plate 16, the distance between the fixed ring 1501 and the fixed plate 16 is the largest, and the elongation of the second spring 17 in its natural state is greater than the maximum distance between the fixed ring 1501 and the fixed plate 16. Therefore, the second spring 17 is in a pre-compressed state and always provides the fixed ring 1501 with a thrust in the direction away from the fixed plate 16.

[0057] When it is necessary to assemble the mandrel 13, the mandrel 13 can be inserted into the upper mold 2, and under the action of the second spring 17, the conical disk 14 moves synchronously with the mandrel 13 and gradually moves towards the direction of the conical groove 201. The mandrel 13 will also drive the first limit post 19 to move.

[0058] When the conical disc 14 abuts against the conical groove 201, guided by the conical surface, the conical disc 14 centers the mandrel 13, causing the mandrel 13 to move to a position coaxial with the fixed sleeve 12. When the conical disc 14 and the mandrel 13 are fully engaged, the first limiting post 19 is about to enter the arc groove 1201. As the mandrel 13 continues to move, the conical disc 14 stops moving, and the positions of the support rod 15 and the fixing ring 1501 are locked. Under the action of the fixing plate 16, the second spring 17 is compressed. Therefore, the force applied to the conical disc 14 will gradually increase, making the conical disc 14 and the conical groove 201 fit tightly together and completing the sealing process of the upper mold 2.

[0059] When the mandrel 13 controls the first limiting post 19 to move to the position where it abuts against the arc surface of the arc groove 1201, since the mandrel 13 has been positioned, the first limiting post 19 will smoothly enter the arc groove 1201. Under the guidance of the arc groove 1201, the first limiting post 19 will gradually shift towards the angle that matches the third vertical groove 1202, thereby driving the mandrel 13 to rotate. When the first limiting post 19 leaves the arc groove 1201 and enters the third vertical groove 1202, the mandrel 13 rotates to a specific angle and, under the action of the first limiting post 19 and the third vertical groove 1202, completes the circumferential locking of the mandrel 13.

[0060] Subsequently, the mandrel 13 will drive the guide limiting mechanism to move, and when the mandrel 13 is inserted into the upper mold 2 to the designated position, the position of the mandrel 13 will be restricted by the misalignment locking component, thereby completing the assembly of the mandrel 13.

[0061] Please see Figures 4-7 , Figure 9 , Figure 10 The guiding and limiting mechanism includes a partition plate 3 connected to the upper mold 2, a rotating tube 4 rotatably mounted on the partition plate 3, a guide groove formed on the inner wall of the rotating tube 4, and a second limiting post 20 connected to the outer circumference of the mandrel 13 and slidably fitted with the guide groove; it also includes a follower component and a support component disposed on the partition plate 3 and connected to the rotating tube 4, the follower component including a second spiral groove 404 formed on the outer circumference of the rotating tube 4, a sliding ring 5 slidably mounted on the rotating tube 4, a limiting block 501 slidably fitted with the second spiral groove 404 connected to the inner wall of the sliding ring 5, and a guide post 7 connected to the partition plate 3, a connecting plate 6 slidably mounted on the guide post 7 and connected to the sliding ring 5, and a first spring 8 sleeved on the guide post 7, the two ends of the first spring 8 abutting against the connecting plate 6 and the partition plate 3 respectively.

[0062] Please see Figure 5 , Figure 10 The misalignment locking assembly includes a limiting disk 9 connected inside the rotating tube 4. A limiting groove 901 is formed on the limiting disk 9. A limiting plate 18 is connected to the mandrel 13. The limiting plate 18 can pass through the limiting groove 901 and abut against the limiting disk 9.

[0063] The upper mold 2 is connected to symmetrically distributed cylinders 10. The telescopic end of the cylinders 10 is connected to a pressure plate 11, and the pressure plate 11 abuts against the connecting plate 6.

[0064] Furthermore, the rotating tube 4 is composed of two tubes with different inner diameters. The guide groove is set in the tube with the smaller inner diameter on the upper side of the rotating tube 4. There are two sets of guide grooves distributed equidistantly around the circumference, and each set of guide grooves can be divided into three sections, namely the first vertical groove 401, the first spiral groove 402, and the second vertical groove 403. The two ends of the first spiral groove 402 are connected to the ends of the first vertical groove 401 and the second vertical groove 403, respectively. The angle of the first spiral groove 402 in the circumferential direction is the same as the angle of the second spiral groove 404 in the circumferential direction, both being 90°.

[0065] Before the core rod 13 is inserted, the connecting plate 6 and the sliding ring 5 are located at the end of the stroke away from the partition 3, that is, the distance between the connecting plate 6 and the partition 3 is the largest. The elongation of the first spring 8 in its natural state is greater than the maximum distance between the connecting plate 6 and the partition 3. Therefore, the first spring 8 is in a pre-compressed state and always provides the connecting plate 6 with a thrust away from the partition 3. In this state, the sliding ring 5 controls the limiting block 501 to be located at the end of the second spiral groove 404 away from the partition 3, so that the first vertical groove 401 and the third vertical groove 1202 are located on the same reference plane, and the second vertical groove 403 and the third vertical groove 1202 are in a misaligned state with a misalignment angle of 90°.

[0066] When it is necessary to assemble the mandrel 13, the mandrel 13 can be inserted into the upper mold 2. Since the protrusion dimension of the first limiting post 19 is smaller than the minimum inner diameter of the rotating tube 4, and the first limiting post 19 and the second limiting post 20 are located on the same reference plane, the mandrel 13 first drives the first limiting post 19 through the rotating tube 4. Then, the conical disk 14 cooperates with the conical groove 201 to complete the initial positioning of the mandrel 13.

[0067] When the mandrel 13 is positioned and the first limiting post 19 moves to the position that matches the arc groove 1201, the first limiting post 19 is guided into the third vertical groove 1202 under the guidance of the arc groove 1201, so that the circumferential angle of the mandrel 13 is locked. In this state, the second limiting post 20 rotates to the same reference plane as the first vertical groove 401, and the intersection angle between the limiting plate 18 and the limiting groove 901 is 90°.

[0068] As the mandrel 13 continues to move, the second limiting post 20 enters the first vertical groove 401. When the second limiting post 20 disengages from the first vertical groove 401 and enters the first spiral groove 402, the angle of the mandrel 13 is locked. Under the action of the second limiting post 20 and the first spiral groove 402, the rotating tube 4 is forced to rotate. The rotation of the rotating tube 4 is driven by the cooperation of the second spiral groove 404 and the limiting block 501 to slide the sliding ring 5 along the axial direction of the rotating tube 4. The sliding ring 5 drives the connecting plate 6 to slide along the guide post 7, further compressing the first spring 8 which is in a pre-compressed state.

[0069] When the second limiting post 20 disengages from the first spiral groove 402 and enters the second vertical groove 403, the rotating tube 4 has rotated 90°, causing the limiting groove 901 to move to a position directly opposite to the limiting plate 18. The core rod 13 continues to move, and the limiting plate 18 passes through the limiting groove 901. At this time, the second limiting post 20 just disengages from the second vertical groove 403. The first spring 8 is released elastically, pushing the connecting plate 6 and the sliding ring 5 to reset. Under the action of the limiting block 501 and the second spiral groove 404, the rotating tube 4 rotates 90° in the opposite direction, returning to the initial angle, so that the second vertical groove 403 and the second limiting post 20 are in a misaligned state, and the limiting plate 18 and the limiting groove 901 are also in a misaligned state, with the misalignment angle being 90°.

[0070] During this process, the first limiting post 19 always slides within the third vertical groove 1202, so that the mandrel 13 cannot detach from the upper mold 2, and the first spring 8 always provides the mandrel 13 with a pushing force in the direction of detaching from the upper mold 2 through the connecting plate 6, sliding ring 5, rotating tube 4 and limiting plate 9, so that the mandrel 13 is firmly locked in the upper mold 2, thus completing the installation of the mandrel 13.

[0071] After installation, control the upper mold 2 and the lower mold 1 to close, the positioning pin 102 is inserted into the positioning hole 202, and at the same time the tapered block 1301 at the end of the mandrel 13 is inserted into the tapered hole 101 of the lower mold 1. Under the guidance of the tapered hole 101 and the tapered surface of the tapered block 1301, the upper mold 2 and the lower mold 1 are further precisely positioned to ensure that the mandrel 13 is not in an eccentric state.

[0072] Please see Figure 4 When the conical block 1301 is fully inserted into the conical hole 101, the upper mold 2 has not yet been fitted with the lower mold 1. The mandrel 13 stops moving due to the obstruction of the lower mold 1. The upper mold 2 continues to close downwards, causing the first limiting post 19 to slide relative to the fixed sleeve 12 along the third vertical groove 1202 and enter the corrugated groove 1203. Under the guidance of the wave-shaped trajectory of the corrugated groove 1203, the mandrel 13 itself generates reciprocating swing rotation. At the same time, the limiting plate 18 and the limiting disk 9 gradually separate, and the first spring 8 is further compressed to ensure that the conical disk 14 and the conical groove 201 are further tightly fitted, and the conical block 1301 and the conical hole 101 are tightly fitted, ensuring the sealing of the mold cavity.

[0073] After the mold is closed, molten steel is injected into the mold cavity formed between the upper mold 2 and the lower mold 1. Under the obstruction of the mandrel 13, the molten steel cools in the mold cavity and forms a steel ingot with a central hole.

[0074] After the steel ingot is formed and cooled, the upper mold 2 and the lower mold 1 are separated. The upper mold 2 moves away from the lower mold 1, and the first spring 8 is released elastically, so that the position of the mandrel 13 remains unchanged in the initial stage. The first limiting post 19 slides along the corrugated groove 1203. Under the guidance of the corrugated groove 1203, the mandrel 13 rotates back and forth, thus separating from the solidified inner wall of the steel ingot and detaching the mandrel 13 from the steel ingot. When the limiting plate 9 moves to abut against the limiting plate 18, since the limiting groove 901 and the limiting plate 18 are still in a 90° misalignment state, the limiting plate 9 drives the limiting plate 18 and the entire mandrel 13 to move upward synchronously, so that the mandrel 13 is separated from the steel ingot. After the mandrel 13 is completely separated from the steel ingot, the steel ingot can be taken out from the lower mold 1 to complete the casting of the steel ingot.

[0075] If maintenance or replacement of the mandrel 13 is required, the pressure plate 11 can be moved by the cylinder 10. The pressure plate 11 drives the connecting plate 6 to move closer to the partition 3, causing the sliding ring 5 to move synchronously. Under the action of the limiting block 501 and the second spiral groove 404, the rotating tube 4 rotates 90°, causing the second vertical groove 403 to move to a position directly opposite to the first limiting post 19, and the limiting groove 901 to a position directly opposite to the limiting plate 18. At this time, the first spring 8 is released elastically. The connecting plate 6, sliding ring 5, rotating tube 4 and limiting plate 9 push the mandrel 13 upward to disengage from the upper mold 2, so that the first limiting post 19 enters the second vertical groove 403. Then the cylinder 10 resets, the pressure plate 11 separates from the connecting plate 6, and the first limiting post 19 slides along the second vertical groove 403, the first spiral groove 402 and the first vertical groove 401 in sequence, and finally disengages from the rotating tube 4. The limiting plate 18 also crosses the limiting groove 901, and the mandrel 13 completely disengages from the upper mold 2, completing the disassembly of the mandrel 13.

[0076] A modeling method for an intelligent core modeling fixture adapted to steel ingot casting molds includes the following steps:

[0077] Step 1: Insert the mandrel 13 into the upper mold 2, and lock the angle of the mandrel 13 under the action of the rotary positioning component;

[0078] Step 2: At the same time, under the action of the guide limiting mechanism, the misalignment locking component moves, thereby locking the position of the core rod 13. When the upper mold 2 and the lower mold 1 are closed, the upper mold 2 and the lower mold 1 are sealed and positioned under the action of the elastic sealing mechanism.

[0079] Step 3: Molten steel is injected into the cavity formed by the upper mold 2 and the lower mold 1, and under the action of the mandrel 13, a hollow steel pipe is formed;

[0080] Step 4: After the steel pipe cools down, control the upper mold 2 to separate from the lower mold 1, and remove the mandrel 13 from the steel pipe. Under the action of the rotation positioning component, the mandrel 13 rotates and separates from the steel pipe.

[0081] It will be apparent to those skilled in the art that the present 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 its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0082] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An intelligent core molding tooling adapted to steel ingot casting molds, comprising: The lower mold, and the positioning pins connected to the lower mold; The upper mold and the positioning holes formed on the upper mold, with the positioning pins and positioning holes being inserted into each other; Its characteristic is that it further includes: A mandrel is inserted into the upper mold, and the mandrel is provided with an elastic sealing mechanism that cooperates with the lower mold and the upper mold; A rotary positioning component is disposed within the upper mold and connected to the mandrel, for locking the angle of the mandrel; A guide limiting mechanism is disposed within the upper mold and connected to the mandrel. The mandrel is provided with a misalignment locking component connected to the guide limiting mechanism. The guide limiting mechanism can move when the mandrel is inserted into the upper mold and lock the position of the mandrel through the misalignment locking component.

2. The intelligent core molding tooling adapted to steel ingot casting molds according to claim 1, characterized in that, The elastic sealing mechanism includes a tapered hole formed inside the lower mold, a tapered block connected to the end of the mandrel that abuts against the tapered hole, and a tapered groove formed inside the upper mold.

3. The intelligent core molding tooling adapted to steel ingot casting molds according to claim 2, characterized in that, The elastic sealing mechanism further includes a fixed plate connected to the mandrel, a support rod slidably mounted on the fixed plate, a fixed ring and a conical disk connected to the support rod, the conical disk abutting against the conical groove, and a second spring sleeved on the support rod, the two ends of the second spring abutting against the fixed ring and the fixed plate respectively.

4. The intelligent core molding tooling adapted to steel ingot casting molds according to claim 1, characterized in that, The rotary positioning assembly includes a fixed sleeve connected to the upper mold, the outer circumferential wall of the fixed sleeve having a guide groove, and the outer circumferential wall of the mandrel having a first limiting post connected thereto, the first limiting post being slidably engaged with the guide groove.

5. The intelligent core molding tooling adapted to steel ingot casting molds according to claim 1, characterized in that, The guiding and limiting mechanism includes a partition plate connected to the upper mold, a rotating tube rotatably mounted on the partition plate, a guide groove formed on the inner wall of the rotating tube, and a second limiting post connected to the outer circumference of the mandrel and slidably fitted with the guide groove; It also includes a follower assembly and a support assembly disposed on the partition and connected to the rotating tube.

6. The intelligent core molding tooling adapted to steel ingot casting molds according to claim 5, characterized in that, The follower component includes a second spiral groove formed on the outer circumference of the rotating tube, and a sliding ring is slidably attached to the rotating tube in the axial direction. A limiting block is connected to the inner wall of the sliding ring and slides into the second spiral groove.

7. The intelligent core molding tooling adapted to steel ingot casting molds according to claim 6, characterized in that, The support assembly includes a guide post connected to the partition plate, a connecting plate connected to the sliding ring slidingly on the guide post, and a first spring sleeved on the guide post, with the two ends of the first spring abutting against the connecting plate and the partition plate respectively.

8. The intelligent core molding tooling adapted to steel ingot casting molds according to claim 7, characterized in that, The misalignment locking assembly includes a limiting disk connected inside the rotating tube, a limiting groove formed on the limiting disk, a limiting plate connected to the mandrel, the limiting plate being able to pass through the limiting groove and engaging with the limiting disk.

9. The intelligent core molding tooling adapted to steel ingot casting molds according to claim 7, characterized in that, The upper mold is connected to symmetrically distributed cylinders, and the telescopic ends of the cylinders are connected to pressure plates, which abut against the connecting plate.

10. A modeling method for an intelligent core modeling fixture adapted to a steel ingot casting mold, comprising the intelligent core modeling fixture adapted to a steel ingot casting mold as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Insert the mandrel into the upper mold and lock the angle of the mandrel under the action of the rotary positioning component; Step 2: Simultaneously, under the action of the guide limiting mechanism, the misalignment locking component moves, thereby locking the position of the mandrel. When the upper mold and the lower mold are closed, the upper mold and the lower mold are sealed and positioned under the action of the elastic sealing mechanism. Step 3: Molten steel is poured into the cavity formed by the upper and lower molds, and under the action of the mandrel, a hollow steel tube is formed; Step 4: After the steel pipe cools down, control the separation of the upper and lower molds and remove the mandrel from the steel pipe. Under the action of the rotating positioning component, the mandrel rotates and separates from the steel pipe.

Images