A metal mold casting equipment based on a slag-blocking gate structure

Abstract

The present application relates to the technical fields of mold casting forming, and discloses a metal mold casting forming equipment based on a slag-blocking sprue structure, which comprises a base frame, a mold closing unit, a driving unit, and a sprue system, wherein the sprue system comprises a support pipe, a sprue cup is arranged on the support pipe, a blocking pipe with a blocking hole formed in the outer wall is arranged in the sprue cup, two through holes are formed in the support pipe, a material pipe is rotatably arranged in the support pipe, and a filter plate is arranged on the material pipe. The metal mold casting forming equipment based on the slag-blocking sprue structure can effectively solve the problem that, in the prior art, high-temperature metal liquid is oxidized with oxygen in the air before being injected into the mold casting system under high pressure, metal impurities are generated, these impurities enter the mold cavity together with the metal liquid, internal defects of the mold after forming are caused, and the sprue system of the mold is continuously eroded and worn by the impurities under the driving of the flowing metal liquid.

Description

Technical Field

[0001] This invention relates to the field of mold casting technology, and specifically to a metal mold casting equipment based on a slag-blocking gate structure. Background Technology

[0002] In the toy manufacturing industry, in order to improve the playability and quality of products, modern toy production generally adopts precision molding processes based on molds. Among them, die casting is a mainstream manufacturing technology that is widely used because it can efficiently produce molds for toy parts with complex structures and precise dimensions.

[0003] In the die casting process, molten metal alloy liquid is rapidly injected into the mold cavity under high pressure through the gating system of the die casting machine. After the molten metal liquid cools and solidifies in the mold cavity and has a certain strength, it is removed from the mold to obtain the molded toy part.

[0004] However, before the molten metal is injected into the mold's gating system under high pressure, it inevitably comes into contact with the air in the runner and pressure chamber. The high-temperature molten metal reacts with the oxygen in the air to produce metal impurities. If these impurities are not effectively removed, they will enter the mold cavity along with the molten metal, causing internal defects in the mold after molding. At the same time, these hard impurities, carried by the flowing molten metal, will continuously scour and wear the mold's gating system. Long-term accumulation will lead to damage to the mold cavity surface and a decrease in dimensional accuracy. Summary of the Invention

[0005] To address the aforementioned shortcomings of existing technologies, this invention provides a metal mold casting equipment based on a slag-blocking gating structure. This effectively solves the problem that in existing technologies, before molten metal is injected into the mold's gating system under high pressure, it inevitably comes into contact with air in the runner and pressure chamber. The high-temperature molten metal reacts with oxygen in the air to generate metal impurities. If these impurities are not effectively removed, they will enter the mold cavity along with the molten metal, causing internal defects in the mold after molding. At the same time, these hard impurities, carried by the flowing molten metal, will continuously scour and wear the mold's gating system, leading to long-term accumulation of surface damage and decreased dimensional accuracy of the mold cavity.

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

[0007] This invention provides a metal mold casting equipment based on a slag-blocking gate structure, comprising:

[0008] A base frame, on which a mold clamping unit and a drive unit are installed, wherein the mold clamping unit is located behind the drive unit;

[0009] The gating system is located between the mold clamping unit and the drive unit, and injects molten metal into the mold clamping unit through the drive unit.

[0010] The gating system includes a support pipe that connects the mold clamping unit and the drive unit. A gating cup is provided at the upper end of the support pipe. A blocking pipe with its lower end penetrating the gating cup is provided inside the gating cup. Several sets of blocking holes distributed in the vertical direction are opened on the outer circumference of the blocking pipe.

[0011] The support tube has two through holes symmetrical about its center on its outer circumference. A material tube is rotatably installed inside the support tube, and a filter plate is installed at the position of the material tube corresponding to the position of the blocking tube.

[0012] Furthermore, the pouring cup is divided into an installation section and several adjustment sections set below the installation section by torsion springs. The adjustment sections are set in an inclined shape, that is, the diameter of the adjustment sections gradually decreases from top to bottom.

[0013] Furthermore, the outer circumferential wall of the blocking tube is provided with several rectangular grooves, and a connecting plate is slidably arranged inside each of the rectangular grooves. The ends of the connecting plates away from the blocking tube are connected to an annular plate located between the adjustment section and the installation section. The inner circumferential wall of the blocking tube is provided with a spiral groove in the up-down direction, and a cleaning component is arranged inside the spiral groove.

[0014] Furthermore, the cleaning component includes a linkage rod that is slidably disposed inside the blocking tube and rotatably connected to several connecting plates. A cleaning plug is provided at the bottom end of the linkage rod, and an adjusting rod that is always located inside the spiral groove is provided on the outer wall of the linkage rod corresponding to the spiral groove.

[0015] Furthermore, an actuator is provided at the upper end of the installation section. The actuator includes two sealing plates connected by a spring telescopic sleeve. A locking element is provided on the upper sealing plate, and the bottom end of the lower sealing plate is connected to several connecting plates.

[0016] Furthermore, the locking component includes several L-shaped plates disposed on the outer circumference of the upper sealing plate. The lower ends of the several L-shaped plates slide through the pouring cup and are connected together to a locking ring. In the initial state, the locking ring is in contact with the outer walls of several adjustment sections.

[0017] Furthermore, a spiral groove extending in the front-rear direction is provided on the inner wall of the support tube, and an injection head with one end located inside the material tube is slidably disposed inside the support tube. The other end of the injection head slides through the material tube and is rotatably connected to the drive unit.

[0018] Furthermore, one end of the injection head located outside the feed tube is connected to the drive unit via a mounting base, and a round-headed rod that always slides inside the spiral groove is provided on the outer wall of the mounting base.

[0019] The technical solution provided by this invention has the following advantages compared with the prior art:

[0020] In this invention, molten metal is poured in through an inclined inlet on the outer wall of a pouring cup. Inside the cone-shaped pouring cup, a blocking tube is vertically positioned. As the molten metal flows towards the center of the pouring cup, larger impurities are preferentially intercepted by several sets of interception holes on the outer circumference of the blocking tube, completing the first stage of coarse filtration. Subsequently, as the molten metal flows into the feed pipe, it undergoes a second stage of fine filtration through a filter plate on the feed pipe. Since the filter holes on the filter plate have smaller diameters, they can effectively intercept the fine impurities remaining after the first stage of filtration. Through these two consecutive physical interceptions, no additional operations are required; simply pouring in molten metal is sufficient to isolate impurities, greatly simplifying the operation process and fundamentally preventing metal debris from scratching the feed pipe and pouring gate, as well as internal defects caused by impurities entering the mold. Ultimately, this significantly improves the surface quality and dimensional accuracy of the castings. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0022] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention;

[0023] Figure 2 This is a three-dimensional structural diagram of the drive unit and the pouring cup according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the three-dimensional separation of the pouring cup and the locking component in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the three-dimensional separation of the pouring cup and the actuator in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the three-dimensional separation of the blocking tube, cleaning component, and pouring cup in an embodiment of the present invention;

[0027] Figure 6 This is a three-dimensional structural diagram of the cleaning component according to an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the support tube structure according to an embodiment of the present invention;

[0029] Figure 8This is a schematic diagram of the three-dimensional separation of the support tube and the material tube in an embodiment of the present invention;

[0030] Figure 9 This is a schematic diagram of the three-dimensional separation of the feed tube and injection head in an embodiment of the present invention.

[0031] The labels in the diagram represent: 1. Base frame; 2. Mold clamping unit; 3. Drive unit; 4. Gating system; 41. Support tube; 411. Through hole; 412. Spiral groove II; 413. Injection head; 4131. Mounting base; 4132. Round head rod; 42. Sprue cup; 421. Mounting section; 422. Adjustment section; 43. Blocking tube; 431. Blocking hole; 432. Rectangular groove; 433. Connecting plate; 434. Annular plate; 435. Spiral groove I; 44. Material pipe; 441. Filter plate; 45. Cleaning component; 451. Linkage rod; 452. Cleaning plug; 453. Adjusting rod; 46. Actuator; 461. Sealing plate; 462. Spring telescopic sleeve; 47. Locking component; 471. L-shaped plate; 472. Locking ring. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0033] The present invention will be further described below with reference to embodiments. Example

[0034] Please see Figure 1 - Figure 9 This invention provides a technical solution: a metal mold casting and forming equipment based on a slag-blocking gate structure, comprising:

[0035] The base frame 1 is equipped with a mold clamping unit 2 and a drive unit 3, wherein the mold clamping unit 2 is located behind the drive unit 3.

[0036] The gating system 4 is located between the mold clamping unit 2 and the drive unit 3. The drive unit 3 injects molten metal into the mold clamping unit 2.

[0037] The gating system 4 includes a support pipe 41 that connects the mold clamping unit 2 and the drive unit 3. A gating cup 42 is provided at the upper end of the support pipe 41. A blocking pipe 43 with its lower end penetrating through the gating cup 42 is provided inside the gating cup 42. Several sets of blocking holes 431 distributed in the vertical direction are opened on the outer circumference of the blocking pipe 43.

[0038] The support tube 41 has two through holes 411 symmetrical about its center on its outer circumference. The support tube 41 has a material tube 44 rotatably installed inside it. The material tube 44 has a filter plate 441 installed at the position corresponding to the blocking tube 43.

[0039] The pouring cup 42 is divided into an installation section 421 and several adjustment sections 422 set below the installation section 421 by a torsion spring. The adjustment sections 422 are set in an inclined shape, that is, the diameter of the adjustment sections 422 gradually decreases from top to bottom.

[0040] The outer circumferential wall of the blocking tube 43 is provided with several rectangular grooves 432, and a connecting plate 433 is slidably arranged inside each of the rectangular grooves 432. The ends of the connecting plates 433 away from the blocking tube 43 are connected to an annular plate 434 located between the adjustment section 422 and the installation section 421. The inner circumferential wall of the blocking tube 43 is provided with a spiral groove 435 along the vertical direction, and a cleaning component 45 is arranged inside the spiral groove 435.

[0041] The cleaning component 45 includes a linkage rod 451 that is slidably disposed inside the blocking tube 43 and rotatably connected to a plurality of connecting plates 433. A cleaning plug 452 is provided at the bottom end of the linkage rod 451, and an adjusting rod 453 that is always located inside the spiral groove 435 is provided on the outer wall of the linkage rod 451 at a position corresponding to the spiral groove 435.

[0042] An actuator 46 is provided at the upper end of the installation section 421. The actuator 46 includes two sealing plates 461 connected by a spring telescopic sleeve 462. A locking element 47 is provided on the upper sealing plate 461, and the bottom end of the lower sealing plate 461 is connected to several connecting plates 433.

[0043] The locking component 47 includes several L-shaped plates 471 disposed on the outer circumference of the upper sealing plate 461. The lower ends of the several L-shaped plates 471 slide through the pouring cup 42 and are connected to a locking ring 472. In the initial state, the locking ring 472 is in contact with the outer walls of several adjustment sections 422.

[0044] The inner wall of the front end of the support tube 41 is provided with a spiral groove 412 extending in the front-back direction. An injection head 413 is slidably disposed inside the support tube 41 with one end located inside the material tube 44. The other end of the injection head 413 slides through the material tube 44 and is rotatably connected to the drive unit 3.

[0045] One end of the injection head 413 located outside the feed tube 44 is connected to the drive unit 3 via the mounting base 4131, and a round-headed rod 4132 that always slides inside the spiral groove 412 is provided on the outer wall of the mounting base 4131.

[0046] In specific work,

[0047] Before the molten metal is injected into the mold's gating system under high pressure, it inevitably comes into contact with the air in the runner and pressure chamber. The high-temperature molten metal reacts with the oxygen in the air to produce metal impurities. If these impurities are not effectively removed, they will enter the mold cavity along with the molten metal, causing internal defects in the mold after molding. At the same time, these hard impurities, carried by the flowing molten metal, will continuously scour and wear the mold's gating system 4. Long-term accumulation will lead to damage to the mold cavity surface and a decrease in dimensional accuracy. Based on this, the gating cup 42 of the metal mold casting equipment based on the slag-blocking gating structure is equipped with a blocking pipe 43 with a blocking hole 431 inside. The blocking pipe 43 is used to block impurities in the molten metal. Furthermore, when the molten metal flows into the material pipe 44, it is further filtered by the filter plate 441 on the material pipe 44, thereby ensuring the cleanliness of the molten metal during the die casting process and avoiding impurities from scratching the equipment and causing internal defects in the mold after entering the mold.

[0048] Specifically, the outer wall of the pouring cup 42 is provided with a feed inlet, which is inclined. During die casting, molten metal is first poured into the pouring cup 42 through the feed inlet, allowing it to fall into the pouring cup 42 by gravity. A blocking tube 43 is installed to initially block impurities from the molten metal (the blocking tube 43 is vertically positioned inside the pouring cup 42, and its outer circumference has several sets of blocking holes 431 distributed vertically, each set including several intercepting holes). The molten metal enters the conical pouring cup... After entering the pouring cup 42, the molten metal flows towards the center of the pouring cup 42. However, since impurities have a certain volume, some larger impurities will be preferentially intercepted by several interception holes, thus completing the initial isolation of impurities in the molten metal. The flowing molten metal enters the feed pipe 44 through the blocking pipe 43 and the filter plate 441. During this process, the filter plate 441 set on the feed pipe 44 further intercepts the small impurities in the molten metal. Subsequently, the molten metal that has completed two filtrations enters the feed pipe 44, waiting for the drive unit 3 to work and drive the injection head 413 to work.

[0049] Impurities in the molten metal are isolated through two physical interceptions. No other operations are required; simply pour the molten metal into the pouring cup 42 as usual. This simplifies the operation process. The interception holes and filter plate 441 separate impurities of different sizes from the molten metal, preventing metallic impurities from entering the material pipe 44 and causing scratches to the material pipe 44 and the pouring gate. At the same time, the filtered molten metal can effectively avoid defects generated in the mold during the die casting process, thereby improving its surface quality and dimensional accuracy.

[0050] When the molten metal enters the material pipe 44 through the pouring cup 42, some air inevitably gets trapped. The trapped air forms bubbles of different sizes in the molten metal. If the bubbles are not expelled in time, they will form pores in the casting. At the same time, after the molten metal enters the material pipe 44, it is easily affected by the ambient temperature and heat dissipation from the pressure chamber wall, resulting in local temperature differences (such as the temperature of the molten metal near the material pipe 44 is slightly lower, while the temperature of the central area is higher).

[0051] Therefore, the drive unit 3 pushes the mounting base 4131 and the injection head 413 to move. During the movement, the mounting base 4131 and the injection head 413 further optimize the molten metal inside the material tube 44. (Specifically, the material tube 44 is rotatably installed inside the rear end of the support tube 41. A polygonal mating groove is opened at the center of the front end of the material tube 44. The injection head 413 is divided into an extrusion section and a support end. The outer wall of the support end is set with the shape of the mating groove and is located at the front end of the support end and connected to the mounting base 4131. At the same time, a spiral groove 41 is opened on the inner wall of the front end of the support tube 41.) 2. The mounting base 4131 is provided with a round-headed rod 4132 that is always located inside the spiral groove 412. Therefore, when the drive unit 3 pushes the mounting base 4131 and the injection head 413 to move, the round-headed rod 4132 is guided by the spiral groove 412, thereby causing the mounting base 4131 to gradually rotate. During this process, the mounting base 4131 synchronously drives the injection head 413 to rotate, and the material tube 44 rotates synchronously under the drive of the mating groove and the support end of the injection head 413, thereby causing the molten metal inside the material tube 44 to shake while being squeezed.

[0052] During rotation, the feed tube 44 causes the molten metal to slosh, thereby creating forced convection. This not only accelerates heat exchange in different areas of the molten metal, making the overall temperature more uniform, but also promotes the collision and fusion of tiny bubbles in the molten metal into larger bubbles. This reduces the adhesion of the bubbles in the molten metal, causing them to float to the surface and break up, reducing porosity inside the casting, improving density and mechanical properties. Furthermore, during the sloshing process, the molten metal is more evenly distributed due to convection, avoiding decreased fluidity caused by local compositional deviations. The sloshing can also break the oxide film on the surface of the molten metal (which hinders flow), making it easier for the molten metal to fill the cavity through the gating system during injection, reducing the power required for injection, and indirectly reducing mold wear and energy consumption.

[0053] It should be noted that the filter plate 441 is designed to intercept smaller impurities, therefore the filter holes on it have smaller diameters and are more prone to clogging. If a staged cleaning method is used, impurities will clog the filter plate 441. Therefore, the injection head 413 drives the feed tube 44 to rotate synchronously, thus cleaning the impurities intercepted on the filter plate 441. (Specifically, during the movement of the injection head 413 and the mounting base 4131, the rotation of the feed tube 44 is achieved through the cooperation of the round-headed rod 4132 and the spiral groove 412.) Two through holes 411 symmetrical about their center are opened on the outer circumference of the filter plate 441. In the initial state, the filter plate 441 is connected to the upper through hole 411. During the rotation of the feed pipe 44, the filter plate 441 on it gradually rotates from the initial top position to the position of the through hole 411 below the support pipe 41. During this process, since no other channels are opened on the support pipe 41, the debris is always on the filter plate 441 until the filter plate 441 rotates to the position of the lower through hole 411. The debris falls naturally into the outer storage box under the action of gravity.

[0054] As working time increases, the interception holes on the upper blocking pipe 43 also face the problem of clogging. However, due to the large diameter of the interception holes, a phased cleaning method is more suitable. Specifically, the blocking plate has a sliding linkage rod 451 that is rotatably connected to several connecting plates 433. When it is necessary to clean the pouring cup 42 and the interception holes, the external push rod pushes the linkage rod 451 to clean the pouring cup 42 and the interception holes. (The pouring cup 42 is provided with two sealing plates 461 connected by spring telescopic sleeves 462. When the linkage rod 451 moves, the upper and lower sealing plates 461 move downward synchronously under the action of the connecting plates 433 and the spring telescopic sleeves 462. During this process, the locking ring 472 is driven by several L-shaped plates 471.) The upper sealing plate 461 cannot move further downwards due to the obstruction of the support tube 41 after the lower sealing plate 461 moves downwards. At this time, the external push rod continues to push the linkage rod 451 to move. The spring telescopic sleeve 462 is gradually stretched by the lower sealing plate 461. As the lower sealing plate 461 continues to move, the annular plate 434 gradually moves downwards and gradually scrapes the inner wall of the pouring cup 42 through its lower end face. Since the installation section 421 and the adjustment section 422 of the pouring cup 42 are connected by a torsion spring, the taper of several adjustment sections 422 of the pouring cup 42 gradually decreases as the annular plate 434 moves. The opened adjustment section moves away from the blocking tube 43, and the debris falls off smoothly through the gap between it and the blocking tube 43.

[0055] It should be noted that the outer wall of the blocking tube 43 has several interception holes. During the flow of molten metal, some debris may also block the interception holes. The inner circumference of the blocking tube 43 has a spiral groove 435. The linkage rod 451 is equipped with an adjusting rod 453 that is always located inside the spiral groove 435. When the linkage rod 451 moves downward, it rotates through the cooperation of the adjusting rod 453 and the spiral groove 435. During the rotation of the linkage rod 451, the cleaning plug 452 cleans the interception holes. The outer circumference of the cleaning plug 452 has several mounting holes. Each mounting hole is equipped with a cleaning rod through a top pressure spring. In the initial state, the cleaning rods are pushed by the inner wall of the blocking tube 43 and are all located inside the mounting groove. When the cleaning plug 452 rotates and moves downward with the linkage rod 451, the cleaning rods quickly pop out when they reach the interception hole position due to the lack of obstruction, thus completing the work of pushing out the debris blocking the interception hole.

[0056] It is worth emphasizing that this metal mold casting equipment based on the slag-blocking gate structure has the following main advantages:

[0057] Firstly, the molten metal is poured in through the inclined inlet on the outer wall of the pouring cup 42. Inside the cone-shaped pouring cup 42, a vertically arranged blocking tube 43 is installed. As the molten metal flows towards the center of the pouring cup 42, larger impurities are preferentially intercepted by several sets of interception holes (each set includes several interception holes) on the outer circumference of the blocking tube 43, completing the first stage of coarse filtration. Subsequently, the molten metal that has passed through the blocking tube 43 flows into the material pipe 44 and undergoes a second stage of fine filtration through the filter plate 441 on the material pipe 44. Since the filter holes on the filter plate 441 have smaller diameters, they can effectively intercept the fine impurities remaining after the first stage of filtration. Through these two consecutive physical interceptions, no additional operation is required; simply pouring in the molten metal is sufficient to isolate the impurities, greatly simplifying the operation process and fundamentally preventing metal debris from scratching the material pipe 44 and the pouring gate, as well as internal defects caused by impurities entering the mold. Ultimately, this significantly improves the surface quality and dimensional accuracy of the casting.

[0058] Secondly, when the drive unit 3 pushes the mounting base 4131 and the injection head 413 to move, the round-headed rod 4132 on the mounting base 4131 moves within the spiral groove 412 opened on the inner wall of the front end of the support tube 41. Guided by the spiral groove 412, the mounting base 4131 and the injection head 413 rotate while moving forward. Since the shape of the outer wall of the support end of the injection head 413 matches the polygonal mating groove at the center of the front end of the material tube 44, the rotating injection head 413 will drive the material tube 44 to rotate synchronously. The rotation of the material tube 44 will cause the molten metal inside to generate forced shaking. The strong convection effect, through the shaking of the feed tube 44, accelerates the heat exchange of molten metal in different areas, making the overall temperature more uniform and avoiding the problem of decreased fluidity caused by local temperature differences. It also causes the tiny bubbles in the molten metal to collide and merge into larger bubbles, reducing their adhesion and making them easier to float to the surface and break up. This significantly reduces the porosity inside the casting, improves the density and mechanical properties of the casting. Finally, the shaking breaks the oxide film on the surface of the molten metal, making it easier for the molten metal to fill the cavity through the gating system during injection, reducing the power required for injection and indirectly reducing mold wear and energy consumption.

[0059] Thirdly, during the synchronous rotation of the injection head 413 and the feed tube 44, the filter plate 441 installed on the feed tube 44 will rotate accordingly. Two through holes 411, symmetrically arranged around the center of the support tube 41, are opened on the outer circumference of the support tube 41. Initially, the filter plate 441 is connected to the upper through hole 411 for filtration. As the feed tube 44 rotates, the filter plate 441 gradually rotates from the top filtration position to the position of the lower through hole 411 on the support tube 41. When the filter plate 441 reaches the lower through hole 411, the debris intercepted on it naturally falls into the external storage tank under gravity, completing an automatic slag discharge. This process is synchronized with the injection action and does not require stopping the machine.

[0060] Fourthly, the linkage rod 451, through the connecting plate 433 and the spring telescopic sleeve 462, drives the upper and lower sealing plates 461 to move downwards synchronously. Simultaneously, the L-shaped plate 471 disengages the locking ring 472 from the adjusting section of the pouring cup 42. The lower sealing plate 461 continues to move downwards, causing the annular plate 434 to scrape the inner wall of the pouring cup 42. At the same time, because the installation section 421 and the adjusting section 422 of the pouring cup 42 are connected by a torsion spring, the downward movement of the annular plate 434 causes the taper of several adjusting sections 422 to gradually decrease and open, creating a gap with the blocking tube 43, allowing large impurities to fall off smoothly. During the downward movement of the linkage rod 451, its… The adjusting rod 453 set on the top will move in the spiral groove 435 on the inner wall of the blocking tube 43, driving the linkage rod 451 and the cleaning plug 452 at its end to rotate. When the cleaning rod on the cleaning plug 452 (which is initially pushed back by the inner wall of the blocking tube 43) rotates to the interception hole position, it will quickly pop out under the action of the top pressure spring due to the loss of obstruction, accurately pushing out the debris blocking the interception hole, completing the unblocking of each interception hole one by one. Through the cleaning design of the filter plate 441, pouring cup 42 and interception hole, the filtration system is always in the best working condition, avoiding production interruption and quality decline caused by blockage.

[0061] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A metal mold casting forming apparatus based on a cinder dam gate structure, characterized by, include: A base frame (1) is provided with a mold clamping unit (2) and a drive unit (3), wherein the mold clamping unit (2) is located behind the drive unit (3); The gating system (4) is located between the mold clamping unit (2) and the drive unit (3), and the molten metal is injected into the mold clamping unit (2) through the drive unit (3); The gating system (4) includes a support pipe (41) that connects the mold clamping unit (2) and the drive unit (3). The upper end of the support pipe (41) is provided with a gating cup (42). The gating cup (42) is provided with a blocking pipe (43) whose lower end penetrates through the gating cup (42). The outer circumferential wall of the blocking pipe (43) is provided with a number of blocking holes (431) distributed in the vertical direction. The support tube (41) has two through holes (411) symmetrical about their center on its outer circumference. The support tube (41) is rotatably installed inside the support tube (41). The material tube (44) is provided with a filter plate (441) at the position corresponding to the blocking tube (43). The filter plate (441) is aligned with the position of the upper through hole (411). When the material tube (44) rotates, it can drive the filter plate (441) to rotate to the position corresponding to the lower through hole (411). The material tube (44) has a polygonal mating groove extending axially at the center of its front end. The inner wall of the front end of the support tube (41) is provided with a spiral groove (412) extending in the front-back direction. An injection head (413) is slidably arranged inside the support tube (41). The injection head (413) includes a squeezing section and a support end arranged coaxially. The squeezing section extends into the inside of the material tube (44). The outer wall contour of the support end is adapted to the inner wall contour of the polygonal mating groove and inserted into the polygonal mating groove. The front end of the support end protrudes out of the material tube (44) and is fixedly connected to a mounting base (4131). The mounting base (4131) is rotatably connected to the output end of the drive unit (3). The injection head (413) is connected to the drive unit (3) through the mounting base (4131) at one end outside the material tube (44), and a round-headed rod (4132) that always slides inside the spiral groove (412) is provided on the outer wall of the mounting base (4131).

2. The metal mold casting forming apparatus based on the structure of the stopper gate according to claim 1, characterized by: The pouring cup (42) is divided into an installation section (421) and several adjustment sections (422) set below the installation section (421) by a torsion spring. The adjustment sections (422) are set in an inclined shape, that is, the diameter of the adjustment sections (422) gradually decreases from top to bottom.

3. The metal mold casting apparatus based on the structure of the stopper gate according to claim 2, characterized by: The circumferential outer wall of the blocking pipe (43) is provided with a plurality of rectangular grooves (432), the plurality of rectangular grooves (432) are internally and slidably provided with connecting plates (433), the plurality of connecting plates (433) are commonly connected with an annular plate (434) located between the adjusting sections (422) and the mounting section (421) and away from the blocking pipe (43), the circumferential inner wall of the blocking pipe (43) is provided with a helical groove one (435) along the up-down direction, and the helical groove one (435) is internally provided with a cleaning piece (45).

4. The metal mold casting apparatus based on the structure of the stopper gate according to claim 3, characterized by: The cleaning piece (45) comprises a linkage rod (451) slidably arranged in the blocking pipe (43) and rotationally connected with the plurality of connecting plates (433), the bottom end of the linkage rod (451) is provided with a cleaning plug (452), and the outer wall of the linkage rod (451) is provided with an adjusting rod (453) located inside the helical groove one (435) at a position corresponding to the helical groove one (435).

5. The metal mold casting apparatus based on the structure of the stopper gate according to claim 3, characterized by: The upper end of the mounting section (421) is provided with an executing piece (46), the executing piece (46) comprises two sealing plates (461) connected through spring telescopic sleeves (462), the upper sealing plate (461) is provided with a locking piece (47), and the bottom end of the lower sealing plate (461) is connected with the plurality of connecting plates (433).

6. The metal mold casting apparatus based on the structure of the stopper gate according to claim 5, characterized by: The locking piece (47) comprises a plurality of L-shaped plates (471) arranged on the circumferential outer wall of the upper sealing plate (461), the lower ends of the plurality of L-shaped plates (471) are slidably penetrated through the sprue cup (42) and are commonly connected with a locking ring (472), and in the initial state, the locking ring (472) is in contact with the outer walls of the plurality of adjusting sections (422).

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