Metal casting machining pouring device capable of preventing generation of air holes

Abstract

The invention discloses a metal casting machining and pouring device capable of preventing air holes from being generated, and belongs to the technical field of metal casting machining and pouring. The metal casting machining and pouring device comprises a bottom plate, a pouring gate, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod and a fifth connecting rod, the mold feedback mechanism comprises a fixing plate, when a mold is clamped through the fixing plate of the mold feedback mechanism, the size of the mold is synchronously fed back to the conical block, then the incomplete winding drum is driven to dynamically adjust the diameter, and when the mold is large, the diameter of the incomplete winding drum is decreased, the winding speed of a steel wire rope is decreased, and an inner pouring pipe slowly ascends; when the mold is small, the diameter of the winding drum is increased, the winding speed is increased, the inner pouring pipe synchronously ascends in an accelerated mode, a bottom opening of the inner pouring pipe is always close to the surface of molten metal, the problems of liquid flow turbulence, splashing and air entrainment caused by traditional high-fall pouring are avoided, the defects of internal air holes, surface pinholes and the like of castings are reduced, and the casting density is improved.

Description

Technical Field

[0001] This invention belongs to the field of metal casting processing and pouring technology, specifically a metal casting processing and pouring device that prevents the formation of porosity. Background Technology

[0002] In the field of metal casting processing, the casting process is the core link that determines the quality of casting. Porosity defects (such as internal porosity, surface pinholes, subcutaneous porosity, etc.) are among the most common and difficult-to-control problems in this process, which seriously restrict the mechanical properties, sealing performance and service life of castings.

[0003] In practical applications, existing metal casting equipment often uses a fixed-height pouring pipe for casting. When molten metal falls into the mold cavity from a high position, it is prone to turbulence and splashing due to impact. This not only entrains a large amount of air, but also causes the molten metal to come into full contact with the air, forming oxide inclusions. These air and inclusions cannot be discharged in time during the solidification process of the molten metal, eventually forming porosity defects. Summary of the Invention

[0004] The purpose of this invention is to provide a metal casting processing and pouring device that prevents porosity formation, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a metal casting processing and pouring device for preventing porosity, comprising: The base plate includes a support frame bolted to the base plate, and the support frame is also provided with a pouring port for pouring molten metal; The mold feedback mechanism includes a fixed plate that is slidably connected to a T-slot on the base plate for providing feedback on the dimensions of the casting mold. The mold feedback mechanism also includes an adjustment component, including an incomplete drum, for adjusting the upward movement speed of the casting component through the feedback from the fixed plate, and a drive structure. A casting component, including an ingate, is arranged on a base plate for extending into the mold to pour molten metal; A limiting component is used to control the downward movement of the inner gating pipe.

[0006] As a further preferred embodiment of this technical solution, the mold feedback mechanism further includes: a connecting rod, which is slidably connected to the support frame and has one end fixedly arranged on one side of the fixed plate; a conical block, which is fixedly arranged on the other end of the connecting rod and is used to drive the incomplete drum to produce a diameter change; and a threaded rod, which is rotatably connected to the support frame and the fixed plate is threadedly connected to the threaded rod.

[0007] As a further preferred embodiment of this technical solution: the connecting rod is U-shaped, and the upper end of the connecting rod is slidably connected to the vertical plate set at the upper end of the support frame.

[0008] As a further preferred embodiment of this technical solution: the adjustment assembly further includes: a limiting rod, fixedly arranged on the incomplete drum for supporting the incomplete drum, and the other end of the limiting rod is slidably connected to the surface of the conical block; a limiting ring for limiting the limiting rod, and the limiting rod is slidably connected to the limiting ring; and an adjusting spring, one end of which is fixedly arranged on the lower end of the limiting rod, and the other end of which is fixedly arranged on the limiting ring.

[0009] As a further preferred embodiment of this technical solution: the end of the limiting rod away from the incomplete drum is provided with several sets of steel balls to reduce the friction with the surface of the conical block.

[0010] As a further preferred embodiment of this technical solution, the driving structure includes: a transmission rod, which is fixedly arranged on one side of the limiting ring and is used to drive the limiting ring to rotate; and a driving plate, which is rotatably connected to the pouring gate and has one end fixedly arranged on the transmission rod.

[0011] As a further preferred embodiment of this technical solution, the casting component further includes: an outer casting pipe, which is installed through the support frame, and an inner casting pipe is slidably connected inside the outer casting pipe, with the inner cavity of the casting port communicating with the outer casting pipe; a steel wire rope, one end of which is fixedly arranged on one of a set of incomplete drums, and the other end of which is fixedly arranged on one side of the bottom of the inner casting pipe, for driving the inner casting pipe to slide inside the outer casting pipe; and a pulley, which is located at the bottom of the upper end of the support frame, for guiding the steel wire rope.

[0012] As a further preferred embodiment of this technical solution: there are two sets of pulleys, and the wire rope passes through the two sets of pulleys in an S-shape.

[0013] As a further preferred embodiment of this technical solution, the limiting component includes: a ratchet, which is fixedly arranged at the other end of the drive plate to limit the reverse rotation of the drive plate; a ratchet tooth, which is rotatably connected to one side of the pouring gate, and one end of which is engaged with the teeth of the ratchet; and a return spring, which is fixedly arranged at the bottom of the ratchet tooth at one end and at the other end of the pouring gate at the other side.

[0014] As a further preferred embodiment of this technical solution: the outer side of the conical block and the incomplete drum is provided with a protective shell, and the protective shell is connected to the support frame by bolts, which facilitates the subsequent maintenance of the internal components.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, when the mold is clamped by the fixing plate of the mold feedback mechanism, the mold size is simultaneously fed back to the conical block, thereby driving the incomplete roll to dynamically adjust its diameter. When the mold is large, the diameter of the incomplete roll becomes smaller, the wire rope winding speed slows down, and the inner gating pipe rises slowly. When the mold is small, the roll diameter increases, the winding speed speed increases, and the inner gating pipe rises synchronously at an accelerated speed, so that the bottom of the inner gating pipe is always close to the surface of the molten metal, avoiding the problems of liquid flow turbulence, splashing, and air entrapment caused by traditional high-drop casting, reducing defects such as internal porosity and surface pinholes in the casting, and improving the density of the casting.

[0016] 2. In this invention, the drive structure utilizes the inherent potential energy of the molten metal to drive the drive plate and transmission rod, achieving automatic upward movement of the inner pouring pipe without the need for an additional power source, thus reducing energy consumption and human intervention errors. The ratchet, ratchet teeth, and return spring of the limiting component effectively prevent the inner pouring pipe from shifting downward due to its own weight when the molten metal stops pouring, ensuring stable pouring height. The steel ball design at the end of the limiting rod reduces friction with the conical block, and the adjusting spring ensures that the partially rolled drum and the conical block are always in contact, improving the accuracy of size feedback and speed adjustment.

[0017] 3. In addition, the conical block and the outer side of the incomplete drum are equipped with a bolted protective shell, which facilitates the maintenance of internal components; the bottom plate T-slot has through holes to discharge oxide debris in a timely manner, and the high-temperature resistant silicone rubber telescopic dust cover on the outside of the threaded rod can prevent debris from affecting the transmission, extend the service life of the equipment, and reduce the frequency and cost of later maintenance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a metal casting processing and pouring device for preventing porosity according to the present invention; Figure 2 This is a schematic diagram of the internal structure of a metal casting processing and pouring device for preventing porosity according to the present invention; Figure 3 This is a partial exploded view of the metal casting processing and pouring device for preventing porosity according to the present invention; Figure 4 This is a partial structural cross-section of a metal casting processing and pouring device for preventing porosity according to the present invention. Figure 1 ; Figure 5 This is a partial structural cross-section of a metal casting processing and pouring device for preventing porosity according to the present invention. Figure 2 ; Figure 6 This is a side view of the internal structure of a metal casting processing and pouring device for preventing porosity according to the present invention. Figure 7 for Figure 1 Enlarged view of point A in the middle; Figure 8This is a bottom schematic diagram of a metal casting processing and pouring device for preventing porosity according to the present invention.

[0019] Legend: 1. Base plate; 2. Support frame; 3. Pour gate; Mold feedback mechanism: 401, fixed plate; 402, connecting rod; 403, conical block; 410, threaded rod; Adjustment components: 404, limit rod; 405, limit ring; 406, incomplete drum; 407, adjusting spring; Drive structure: 408, transmission rod; 409, drive plate; Casting components: 501, outer gating pipe; 502, inner gating pipe; 503, wire rope; 504, pulley; Limiting components: 601, ratchet; 602, ratchet tooth; 603, return spring. Detailed Implementation

[0020] 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.

[0021] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] like Figures 1 to 8 Schematic diagrams of the metal casting pouring apparatus provided in this application in some embodiments.

[0024] In some embodiments, the metal casting pouring device can be a tiltable rotatable type, a translational venting type, or a liquid level controllable pouring device. Among them, the tiltable rotatable pouring device can be, but is not limited to, a pouring device for small precision castings, a pouring device for medium-sized mechanical parts, or a pouring device for large industrial components. Figure 1 In this embodiment, a liquid level controllable casting device is used as an example for describing the metal casting casting device. Of course, other types of metal casting casting devices can also adopt similar structures, which will not be described in detail below.

[0025] Understandable Figure 1 The diagram only schematically illustrates some of the components included in the metal casting casting apparatus; the actual shape, size, location, and construction of these components are not subject to change. Figure 1 Due to limitations, metal casting casting equipment can also include, compared to... Figure 1 More or fewer parts.

[0026] In some embodiments, the metal casting pouring apparatus may include a base plate 1 and a support frame 2, the support frame 2 being bolted to the base plate 1. For example, when the metal casting pouring apparatus is a level-controlled pouring apparatus, the support frame 2 can provide support for other components.

[0027] The base plate 1 may also include a pouring port 3, which can be set on the support frame 2 to receive molten metal during the pouring of metal castings.

[0028] In some embodiments, the base plate 1 further includes: a mold feedback mechanism, including a fixed plate 401, which is slidably connected in a T-shaped groove on the base plate 1 for providing feedback on the size of the casting mold. The mold feedback mechanism is also provided with an adjustment component, including an incomplete drum 406, for adjusting the upward movement speed of the casting component through the feedback of the fixed plate 401, and also includes a drive structure. The casting component includes an inner gating tube 502, which is arranged on the base plate 1 and is used to extend into the mold to pour molten metal. A limiting component is used to control the downward movement of the inner gating pipe 502.

[0029] When the fixed plate 401 clamps and limits the casting mold, the size of the mold is simultaneously fed back to the incomplete roll 406. The incomplete roll 406 dynamically changes its diameter based on the size of the mold, thereby controlling the upward movement speed of the inner casting pipe 502.

[0030] In this embodiment, the diameter of the incomplete roll 406 is adaptively adjusted according to the size of the mold. When the molten metal is poured, the inner pouring pipe 502 is always close to the surface of the molten metal inside the mold, so that there is almost no drop difference after the molten metal flows out, and it can flow smoothly into the cavity, avoiding turbulent flow and splashing, greatly reducing the amount of air entrapment, significantly reducing defects such as internal porosity and surface pinholes in the casting, and improving the density of the casting.

[0031] It should be noted that the incomplete roll 406 has three sets.

[0032] It should also be understood that the T-shaped groove on the base plate 1 has through holes, located on both sides and in the middle of the T-shaped groove, to facilitate the subsequent discharge of oxide debris that falls into the T-shaped groove.

[0033] In some embodiments, the mold feedback mechanism further includes: a connecting rod 402, which is slidably connected to the support frame 2 and has one end fixedly disposed on one side of the fixing plate 401; a conical block 403, which is fixedly disposed on the other end of the connecting rod 402 and is used to drive the incomplete drum 406 to produce a diameter change; and a threaded rod 410, which is rotatably connected to the support frame 2 and the fixing plate 401 is threadedly connected to the threaded rod 410.

[0034] When the mold is placed on the base plate 1, the threaded rod 410 is turned. The threaded rod 410 drives the two sets of fixed plates 401 to slide in opposite directions in the T-shaped groove on the base plate 1 through two sets of bidirectional threads. At the same time, the fixed plates 401 drive the connecting rod 402 to slide on the support frame 2. The connecting rod 402 drives the conical block 403 to move.

[0035] In this embodiment, when the two sets of fixing plates 401 clamp and fix the mold, the conical block 403 synchronously adjusts the diameter of the three sets of incomplete rolls 406, thereby adjusting the upward movement speed of the inner pouring pipe 502 according to the pouring size of the mold.

[0036] It should be noted that the connecting rod 402 is U-shaped, and the upper end of the connecting rod 402 is slidably connected to the vertical plate set on the upper end of the support frame 2.

[0037] The threaded rod 410 may be equipped with a telescopic dust cover, which may be made of high-temperature resistant silicone rubber to prevent debris from affecting the transmission of the threaded rod 410.

[0038] In some embodiments, the adjusting assembly further includes: a limiting rod 404, fixedly disposed on the incomplete drum 406 for supporting the incomplete drum 406, and the other end of the limiting rod 404 is slidably connected to the surface of the conical block 403; a limiting ring 405 for limiting the limiting rod 404, and the limiting rod 404 is slidably connected to the limiting ring 405; and an adjusting spring 407, one end of which is fixedly disposed on the lower end of the limiting rod 404, and the other end of which is fixedly disposed on the limiting ring 405.

[0039] The conical block 403 moves to compress the three sets of limiting rods 404 and slides on the limiting ring 405. At the same time, the movement of the limiting rods 404 compresses the adjusting spring 407. The three sets of limiting rods 404 simultaneously drive the incomplete drum 406 to move to one side.

[0040] In this embodiment, the limiting rod 404 is pressed by the conical block 403 at different diameter positions, thereby adjusting the range of the outward expansion diameter of the three sets of incomplete drums 406, and the limiting rod 404 can always be in contact with the surface at different diameter positions by adjusting the rebound of the spring 407.

[0041] It should be noted that the end of the limiting rod 404 away from the incomplete drum 406 is provided with several sets of steel balls, which are used to reduce the friction with the surface of the conical block 403, and can also be used to apply lubricating oil at the contact point.

[0042] Among them, a protective shell is provided on the outside of the conical block 403 and the incomplete drum 406, and the protective shell is connected to the support frame 2 by bolts, which facilitates the subsequent maintenance of internal components.

[0043] In some embodiments, the drive structure includes: a transmission rod 408, which is fixedly arranged on one side of the limiting ring 405 and is used to drive the limiting ring 405 to rotate; and a drive plate 409, which is rotatably connected through the pouring port 3 and has one end fixedly arranged on the transmission rod 408.

[0044] When the molten metal is poured into the pouring port 3, the tilting of the pouring port 3 causes the molten metal to drive the drive plate 409 to rotate on the pouring port 3. The drive plate 409 drives the transmission rod 408 to rotate, the transmission rod 408 drives the limiting ring 405 to rotate, the limiting ring 405 drives the limiting rod 404 to rotate, the limiting rod 404 drives the incomplete drum 406 to rotate, and at the same time, the steel ball at one end of the limiting rod 404 slides on the conical block 403.

[0045] In this embodiment, the molten metal drives the drive plate 409 to rotate, thereby causing the incomplete drum 406 with adjusted diameter to move the inner casting pipe 502 upward.

[0046] It should be noted that a nano-anti-stick coating can be added at the pouring port 3, the drive plate 409 and the inner pouring pipe 502 or the place where the molten metal comes into contact to prevent the molten metal from sticking together. Such coatings include fluoropolymers (e.g., PTFE) and nano-ceramic particles (silicon carbide, boron carbide).

[0047] In some embodiments, the casting component further includes: an outer casting pipe 501, which is disposed through the support frame 2, and an inner casting pipe 502 is slidably connected inside the outer casting pipe 501, and the inner cavity of the casting port 3 is connected to the outer casting pipe 501; a steel wire rope 503, one end of which is fixedly disposed on one of a set of incomplete drums 406, and the other end of which is fixedly disposed on one side of the bottom of the inner casting pipe 502, for driving the inner casting pipe 502 to slide inside the outer casting pipe 501; and a pulley 504, which is disposed at the bottom of the upper end of the support frame 2, for guiding the steel wire rope 503.

[0048] When the incomplete drum 406 rotates, it winds the wire rope 503. The wire rope 503 is guided by the pulley 504 to drive the inner casting pipe 502 to slide upward inside the outer casting pipe 501.

[0049] In this embodiment, the winding speed of the wire rope 503 is changed by adjusting the diameter of the incomplete drum 406. When the mold is small, the larger the diameter of the incomplete drum 406, the faster the wire rope 503 is wound. When the mold is small, the smaller the diameter of the incomplete drum 406, the slower the wire rope 503 is wound. This ensures that the inner pouring pipe 502 is always kept in contact with the molten metal inside the mold, preventing a large drop when the molten metal is poured.

[0050] It should be noted that there are two sets of pulleys 504, and the steel wire rope 503 passes through the two sets of pulleys 504 in an S-shape.

[0051] In some embodiments, the limiting component includes: a ratchet 601, fixedly disposed at the other end of the drive plate 409, for limiting the reverse rotation of the drive plate 409; a ratchet 602, rotatably connected to one side of the pouring gate 3, with one end engaged with the teeth of the ratchet 601; and a return spring 603, with one end fixedly disposed at the bottom of the ratchet 602 and the other end fixedly disposed at one side of the pouring gate 3.

[0052] When the drive plate 409 rotates in the forward direction, the inclined surface of the teeth causes one end of the ratchet 602 to move, and at the same time pulls the return spring 603.

[0053] In this embodiment, when the pouring of molten metal stops, the ratchet 602 is always engaged with the ratchet 601 by the reverse pull of the return spring 603, thereby preventing the drive plate 409 from reversing due to the weight of the inner pouring pipe 502 when the molten metal stops.

[0054] It should be noted that the other end of the ratchet 602 can be tied with a pull rope, which is used to unlock the drive plate 409 after the mold is fixed, so that the inner gating pipe 502 can penetrate into the gating opening of the mold by its own weight.

[0055] The inner gating pipe 502 and the outer gating pipe 501 have a movable space inside the limiting groove, which makes it convenient for the steel wire rope 503 on the drum 406 to have a certain space to move when the fixing plate 401 fixes and adjusts the mold.

[0056] Working principle or structural principle: When in use, place the mold to be poured on the T-shaped groove of the base plate 1, and turn the threaded rod 410 to drive the two sets of fixing plates 401 to slide and clamp the mold in opposite directions using the bidirectional thread. The fixing plates 401 simultaneously drive the U-shaped connecting rod 402 and the conical block 403 to move laterally, and the mold size is fed back through the displacement of the conical block 403. The inclined surface of the conical block 403 presses against three sets of limiting rods 404, causing the limiting rods 404 to slide along the limiting ring 405 and compress the adjusting spring 407, which drives the incomplete drum 406 to dynamically adjust its diameter. The larger the mold, the greater the displacement of the conical block 403 and the smaller the diameter of the incomplete drum 406, and vice versa. When molten metal is injected into the pouring port 3, the molten metal impacts the drive plate 409, causing it to rotate. The drive plate 409 drives the limiting ring 405 and the incomplete drum 406 to rotate via the transmission rod 408. The incomplete drum 406 is wound in an S-shape and passes through the steel wire rope 503 of the two sets of pulleys 504, pulling the inner pouring pipe 502 to slide upward inside the outer pouring pipe 501. Since the diameter of the incomplete drum 406 is adapted to the mold size, the rising speed of the inner pouring pipe 502 is adaptively matched with the mold size: a large mold corresponds to a slow rising speed, and a small mold corresponds to a fast rising speed, ensuring that the bottom of the inner pouring pipe 502 is always close to the surface of the molten metal. The molten metal is smoothly injected into the mold through the outer pouring pipe 501 and the inner pouring pipe 502 without any drop difference, reducing air entrapment from the source. During the pouring process, the adjusting spring 407 ensures that the limiting rod 404 and the conical block 403 are in close contact to maintain the adjustment accuracy. After the pouring stops, the ratchet 602 is engaged with the teeth of the ratchet 601 under the action of the return spring 603, which restricts the reverse rotation of the drive plate 409 and prevents the inner pouring pipe 502 from falling due to its own weight. At the same time, the T-shaped groove through hole of the bottom plate 1 can discharge oxide slag, and the protective shell facilitates component maintenance and ensures long-term stable operation of the device.

[0057] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0058] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0059] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A metal casting processing and pouring device for preventing porosity formation, characterized in that: include: The base plate (1) includes a support frame (2) bolted to the base plate (1), and the support frame (2) is also provided with a pouring port (3) for pouring molten metal; The mold feedback mechanism includes a fixed plate (401) which is slidably connected in a T-shaped groove on the base plate (1) for providing feedback on the size of the casting mold. The mold feedback mechanism is also provided with an adjustment component, including an incomplete drum (406) for adjusting the upward movement speed of the casting component through the feedback of the fixed plate (401), and also includes a drive structure. The casting component includes an inner gating tube (502) arranged on the base plate (1) for extending into the mold to pour molten metal; A limiting component is used to control the downward movement of the inner gating pipe (502).

2. The metal casting processing and pouring device for preventing porosity formation according to claim 1, characterized in that: The mold feedback mechanism also includes: a connecting rod (402), which is slidably connected to the support frame (2) and has one end fixedly arranged on one side of the fixed plate (401); a conical block (403), which is fixedly arranged on the other end of the connecting rod (402) and is used to drive the incomplete drum (406) to produce a diameter change; and a threaded rod (410), which is rotatably connected to the support frame (2) and the fixed plate (401) is threadedly connected to the threaded rod (410).

3. The metal casting processing and pouring device for preventing porosity as described in claim 2, characterized in that: The connecting rod (402) is U-shaped, and the upper end of the connecting rod (402) is slidably connected to the vertical plate set on the upper end of the support frame (2).

4. The metal casting processing and pouring device for preventing porosity formation according to claim 3, characterized in that: The adjustment assembly also includes: a limiting rod (404), which is fixedly arranged on the incomplete drum (406) for supporting the incomplete drum (406), and the other end of the limiting rod (404) is slidably connected to the surface of the conical block (403); a limiting ring (405) for limiting the limiting rod (404), and the limiting rod (404) is slidably connected to the limiting ring (405); and an adjusting spring (407), one end of which is fixedly arranged on the lower end of the limiting rod (404), and the other end of which is fixedly arranged on the limiting ring (405).

5. The metal casting processing and pouring device for preventing porosity as described in claim 4, characterized in that: The end of the limiting rod (404) away from the incomplete drum (406) is provided with several sets of steel balls to reduce the friction with the surface of the conical block (403).

6. The metal casting processing and pouring device for preventing porosity formation according to claim 5, characterized in that: The drive structure includes: a transmission rod (408), which is fixedly arranged on one side of the limiting ring (405) to drive the limiting ring (405) to rotate; and a drive plate (409), which is rotatably connected through the pouring port (3) and has one end fixedly arranged on the transmission rod (408).

7. The metal casting processing and pouring device for preventing porosity as described in claim 6, characterized in that: The casting component also includes: an outer casting pipe (501), which is installed through the support frame (2), and an inner casting pipe (502) is slidably connected inside the outer casting pipe (501), and the inner cavity of the casting port (3) is connected to the outer casting pipe (501); a steel wire rope (503), one end of which is fixedly arranged on one of the incomplete drums (406), and the other end is fixedly arranged on one side of the bottom of the inner casting pipe (502), for driving the inner casting pipe (502) to slide inside the outer casting pipe (501); and a pulley (504), which is set at the bottom of the upper end of the support frame (2), for guiding the steel wire rope (503).

8. The metal casting casting apparatus for preventing porosity as described in claim 7, characterized in that: There are two sets of pulleys (504), and the wire rope (503) passes through the two sets of pulleys (504) in an S-shape.

9. A metal casting casting apparatus for preventing porosity formation according to claim 8, characterized in that: The limiting components include: a ratchet (601), which is fixedly arranged at the other end of the drive plate (409) to limit the reverse rotation of the drive plate (409); a ratchet (602), which is rotatably connected to one side of the pouring gate (3) and one end is engaged with the teeth of the ratchet (601); and a return spring (603), one end of which is fixedly arranged at the bottom of the ratchet (602) and the other end of which is fixedly arranged on one side of the pouring gate (3).

10. A metal casting processing and pouring device for preventing porosity formation according to claim 9, characterized in that: The conical block (403) and the incomplete drum (406) are provided with protective shells on their outer sides, and the protective shells are bolted to the support frame (2) to facilitate subsequent maintenance of internal components.

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