Ductile iron casting equipment and casting method for ductile iron elevator castings

Abstract

The invention discloses a ductile iron casting device and a casting method for ductile iron elevator castings, which relates to the field of casting gates, including a movable mold and a fixed mold, a gate is provided on the fixed mold, and receiving grooves are provided on both sides of the gate, and protrusion components are arranged in the receiving grooves, and the protrusion components include protrusion blocks. When the molten material enters the mold cavity from the gate, the protrusion blocks are located in the receiving grooves, and when the molten material enters the mold cavity from the gate, the protrusion blocks move into the gate. In the clamping process, the clamping protrusion is located in a depression to limit the part, so that the part is not easy to shake and slide, making the part more stable, and preventing the part from falling off the clamping block. At the same time, because the clamping position corresponds to the gate, the part corresponding to the gate position of the part molding needs to be cut and polished, and clamping this position can use a larger clamping force to ensure the clamping strength, and it is not necessary to clamp other parts of the part, and the part will not be scratched due to clamping, thereby improving the molding quality of the part.

Description

Technical Field

[0001] The invention relates to the field of casting pouring gates, and in particular to ductile iron casting equipment and a casting method for ductile iron elevator castings. Background Art

[0002] Ductile iron, full name ductile iron, is a material that is processed by a special process to make the graphite in the cast iron present a spherical distribution. It has good casting performance, high strength, high toughness and excellent shock absorption performance, and is widely used in the machinery manufacturing industry.

[0003] Casting equipment is a machine used to melt metal into liquid that meets certain requirements and pour it into a mold. After cooling, solidification and cleaning, a casting with a predetermined shape, size and performance is obtained. There are many types of casting equipment, which can be divided into different categories according to different casting methods and processes.

[0004] Existing casting equipment often pours or pushes molten metal into the mold through the gate. The casting gate is the channel for the molten metal to enter the cavity during the casting process. It is located at the end of the pouring system, and the part closest to the cavity is usually very small. The design of the gate has a direct impact on the quality of the casting and the forming effect. The functions of the gate include controlling the flow path of the molten metal to ensure that the molten metal can quickly fill the entire cavity. At the same time, after the molding is completed, the gate is the first to solidify and seal to prevent the molten metal from flowing back and avoid shrinkage depression caused by a rapid drop in cavity pressure. In addition, the gate design also needs to consider the convenience of separating the gate from the casting after molding to facilitate subsequent cleaning and processing. After the part is formed, the excess material of the gate and riser needs to be cut off. These parts play a role in conveying liquid metal and compensating for shrinkage during the casting process, but become excess parts that need to be removed after casting is completed.

[0005] Chinese patent CN113680971B discloses a casting device, including a smelting device, a casting device, a plurality of container structures and a recovery device; the casting device includes a chassis and a flow channel structure arranged on the chassis, one end of the flow channel structure is a feed end, and the other end of the flow channel structure is a discharge end; the smelting device is connected to the feed end of the flow channel structure; the smelting device is used to drive the metal solution into the flow channel structure; a plurality of the container structures are arranged on the chassis, and the plurality of the container structures are respectively matched with the chassis to load the metal solution; the recovery device is arranged at the lower station of the discharge end of the casting device, and the recovery device is used to recover the metal solution in the flow channel structure, which solves the problem that the flow channel of the traditional casting equipment is easy to be blocked, and has the advantages of simple structure and low manufacturing cost;

[0006] Chinese patent application CN109732043A discloses casting equipment for reducing casting defects, including: an anti-oxidation liquid storage bag, a gas-removing intermediate bag, and a mold provided with a U-shaped groove; during the casting process, the liquid metal is poured into the liquid storage bag through a ladle, and then the liquid metal flows into the intermediate bag, and then the liquid metal is poured into the mold, using a mold with a U-shaped groove at the bottom of the cavity. During the casting process, impurities in the casting route are pushed into the U-shaped groove by the liquid metal, and the air below the cavity is discharged through the U-shaped groove, and the air above the cavity is discharged through the pores, so that the gas and impurities in the cavity are exhausted, avoiding the formation of sand holes, pores and black skin in the casting.

[0007] The above patents and prior art also have the following defects:

[0008] After the casting parts are formed, they need to be removed from the mold. The manipulator used in the prior art clamps the parts and removes them. However, clamping the parts may cause scratches on the surface of the parts, resulting in unqualified parts. Buffer materials and small clamping forces are needed to avoid clamping the parts. For some heavier parts, the clamping force is insufficient, resulting in poor stability, and the parts are prone to shaking or even falling off. After the parts are formed, the position corresponding to the gate is redundant and needs to be cut off during subsequent processing. There is no need to worry about scratches. However, the gates in the existing molds are mostly cylindrical or gradually shrinking truncated cones. Clamping the parts at this position is prone to rotation and shaking around the cylindrical gate, which also has the problem of poor clamping stability and easy falling of parts.

[0009] Therefore, the present application provides a ductile iron casting equipment and a casting method for ductile iron elevator castings to meet the needs. Summary of the invention

[0010] The purpose of the present application is to provide a ductile iron casting device and a casting method for ductile iron elevator castings. During the clamping process, the clamping protrusion is located in the recess to limit the part, making the part less likely to shake and slide, making the part more stable, and preventing the part from falling off the clamping block. At the same time, because the clamping position corresponds to the gate, the part corresponding to the gate position needs to be cut and polished. Clamping this position can use a larger clamping force to ensure the clamping strength. There is no need to clamp other parts of the part, and the part will not be scratched due to clamping, thereby improving the molding quality of the part.

[0011] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a ductile iron casting device, comprising a movable mold and a fixed mold, a gate is provided on the fixed mold, receiving grooves are provided on both sides of the gate, and protrusion components are provided in the receiving grooves, and the protrusion components include protrusion blocks, when the molten material enters the mold cavity from the gate, the protrusion blocks are located in the receiving grooves, when the molten material enters the mold cavity from the gate, the protrusion blocks move into the gate, and the protrusion blocks are close to the side walls of the gate and match the gate;

[0012] A material taking assembly is arranged above the fixed mold, and the material taking assembly also includes a clamping block and a clamping protrusion. The clamping protrusion is fixedly mounted on the clamping block, the inner wall of the clamping block matches the gate, and the clamping protrusion matches the protrusion block.

[0013] Preferably, a casting tube is also provided on the fixed mold, a casting push rod is provided in the casting tube, the protrusion assembly also includes a movable screw, a movable screw barrel, an extrusion plate and an extrusion rod, the casting push rod can drive the extrusion rod to move, the extrusion rod can push the extrusion plate to move, when the extrusion plate moves, it can drive the movable screw barrel to rotate, the movable screw is inserted in the movable screw barrel and cooperates with the movable screw barrel thread, and the movable screw is fixedly mounted on the protrusion block.

[0014] Preferably, the protrusion assembly also includes a transmission unit, which includes a transmission rack, a transmission gear, a transmission shaft, a transmission driving pulley, a transmission passive pulley and a transmission belt, the transmission shaft is rotatably connected in the accommodating groove, the transmission gear is fixedly mounted on the transmission shaft, the transmission rack is fixedly mounted on the extrusion plate, the transmission rack is meshed with the transmission gear, the transmission driving pulley is fixedly mounted on the transmission shaft, the transmission passive pulley is fixedly mounted on the movable screw barrel, and the transmission belt is connected to the transmission driving pulley and the transmission passive pulley.

[0015] Preferably, the protrusion assembly also includes a stabilizing unit, which includes a stabilizing rod, a stabilizing cylinder, a return spring, a stabilizing block and a stabilizing seat, the stabilizing rod is fixedly mounted on the extrusion plate, the stabilizing cylinder is fixedly mounted on the groove wall of the accommodating groove, the stabilizing rod is inserted in the stabilizing cylinder and slidably cooperates with the stabilizing cylinder, one end of the return spring is fixedly mounted on the stabilizing cylinder, the other end of the return spring is fixedly mounted on the extrusion plate, and the return spring is sleeved on the stabilizing rod, the stabilizing block is fixedly mounted on the bottom of the transmission rack, the stabilizing seat is fixedly mounted on the groove wall of the accommodating groove corresponding to the stabilizing block, the stabilizing seat is provided with a stabilizing groove, and the stabilizing block slidably cooperates in the stabilizing groove.

[0016] Preferably, the protrusion assembly further comprises a fixing plate and a fixing rod, the movable screw barrel is rotatably connected to the fixing plate, the fixing rod is fixedly mounted on the protrusion block, and the fixing rod penetrates the fixing plate and slidably cooperates with the fixing plate.

[0017] Preferably, the protrusion assembly also includes an extrusion cylinder, which is slidably fitted on the casting tube, the extrusion rod is fixedly mounted on the extrusion cylinder, the extrusion rod is abutted against the extrusion plate, a connecting spring is fixedly mounted on the extrusion cylinder, the other end of the connecting spring is fixedly mounted on the fixed mold, and a pushing block is fixedly mounted on the side wall of one end of the casting push rod away from the casting tube.

[0018] Preferably, the material picking assembly also includes a linear drive, a fixed table, a lifting push rod and two clamping push rods, the fixed table is installed on the linear drive, the linear drive can drive the fixed table to move, the lifting push rod is fixedly installed on the fixed table, the two clamping push rods are fixedly installed on the output end of the lifting push rod, the two clamping blocks are respectively fixedly installed on the corresponding output ends of the clamping push rod, and the two clamping protrusions are respectively fixedly installed on the corresponding clamping blocks.

[0019] Preferably, the casting tube is fixedly connected to a feed funnel, a limiting slider is fixedly installed on the casting tube, a limiting hole is provided on the extrusion cylinder, and the limiting slider is slidably fitted in the limiting hole.

[0020] Preferably, the movable mold and the fixed mold are both mounted on the casting shell, the linear drive is fixedly mounted on the casting shell, and the movable mold and the casting push rod are both equipped with a hydraulic press.

[0021] A casting method for ductile iron elevator castings uses the ductile iron casting equipment.

[0022] In summary, the technical effects and advantages of the present invention are as follows:

[0023] 1. In the present invention, a protruding block is arranged at the gate position, so that a depression corresponding to the protruding block is formed at the protruding block position after the part is formed, and two clamping blocks clamp the gate position corresponding to the part, and the clamping protrusions on the two clamping blocks are located in the depression. The part is removed and the clamping part is more stable. During the clamping process, the clamping protrusion is located in the depression to limit the part, so that the part is not easy to shake and slide, making the part more stable, and preventing the part from falling off the clamping block. At the same time, because the clamping position corresponds to the gate, the part corresponding to the gate position of the part molding needs to be cut and polished. Clamping this position can use a larger clamping force to ensure the clamping strength, and there is no need to clamp other parts of the part, and the part will not be scratched due to clamping, thereby improving the molding quality of the part;

[0024] 2. In the present invention, when the molten metal enters the mold cavity through the gate, the protrusion block is located in the receiving groove, and the side wall of the protrusion block matches the gate to form a smooth curved surface, thereby preventing the protrusion in the gate from blocking the molten metal, so that the process of the molten metal entering the mold cavity will not be blocked and slowed down, thereby ensuring the injection speed and the molding quality of the parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 It is a schematic diagram of the structure of the driving assembly, the casting push rod and the casting shell in the present invention;

[0027] Figure 2 It is a schematic diagram of the structure of the fixed mold, the casting push rod and the casting shell in the present invention;

[0028] Figure 3 For the present invention Figure 2 A magnified view of part A;

[0029] Figure 4 It is a schematic diagram of the structure of the linear drive and the lifting push rod in the present invention;

[0030] Figure 5 For the present invention Figure 4 A magnified view of part B;

[0031] Figure 6 It is a schematic diagram of the structure of the movable mold, the fixed mold and the casting push rod in the present invention;

[0032] Figure 7 It is a structural schematic diagram of the fixed mold, the casting port, the casting pipe and the casting push rod in the present invention;

[0033] Figure 8 It is a schematic structural diagram of the fixed mold, extrusion rod, extrusion cylinder, casting tube and casting push rod in the present invention;

[0034] Fig. 9 It is a schematic diagram of the structure of the extrusion cylinder, the casting tube and the casting push rod in the present invention;

[0035] Fig.10 For the present invention Fig. 9 Enlarged view of part C;

[0036] Fig.11 It is a schematic diagram of the structure of the extrusion rod and the extrusion cylinder in the present invention;

[0037] Fig.12 For the present invention Fig.11 A magnified view of part D in the middle;

[0038] Fig.13 It is a schematic diagram of the structure of the protruding block and the extrusion plate in the present invention.

[0039] In the figure: 1, movable mold; 2, fixed mold; 3, gate; 4, protrusion assembly; 41, protrusion block; 42, movable screw; 43, movable screw barrel; 44, extrusion plate; 45, extrusion rod; 46, transmission unit; 461, transmission rack; 462, transmission gear; 463, transmission shaft; 464, transmission driving pulley; 465, transmission driven pulley; 466, transmission belt; 47, stabilizing unit; 471, stabilizing rod; 472, stabilizing Cylinder; 473, reset spring; 474, stabilizing block; 475, stabilizing seat; 48, fixing plate; 49, fixing rod; 5, material taking assembly; 51, clamping block; 52, clamping protrusion; 53, linear drive; 54, fixing table; 55, lifting push rod; 56, clamping push rod; 6, casting tube; 7, casting push rod; 8, extrusion cylinder; 9, connecting spring; 10, pushing block; 11, feeding funnel; 12, limiting slider; 13, casting shell. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Example: Reference Figure 1-Figure 13 A ductile iron casting device shown in the figure comprises a movable mold 1 and a fixed mold 2, a gate 3 is provided on the fixed mold 2, receiving grooves are provided on both sides of the gate 3, and protrusion components 4 are provided in the receiving grooves, and the protrusion components 4 comprise protrusion blocks 41, when the molten material enters the mold cavity from the gate 3, the protrusion blocks 41 are located in the receiving grooves, when the molten material enters the mold cavity from the gate 3, the protrusion blocks 41 move into the gate 3, and the protrusion blocks 41 are close to the side walls of the gate 3 and match the gate 3;

[0042] A material taking assembly 5 is arranged above the fixed mold 2. The material taking assembly 5 also includes a clamping block 51 and a clamping protrusion 52. The clamping protrusion 52 is fixedly mounted on the clamping block 51. The inner wall of the clamping block 51 matches the gate 3, and the clamping protrusion 52 matches the protrusion block 41.

[0043] After the movable mold 1 moves and the fixed mold 2 is closed, the molten metal enters the mold cavity of the movable mold 1 and the fixed mold 2 through the gate 3. During the process of the molten metal entering the mold cavity through the gate 3, the protruding block 41 is located in the receiving groove, and the side wall of the protruding block 41 matches the gate 3 to form a smooth curved surface, so as to prevent the protrusion in the gate 3 from blocking the molten metal, so that the process of the molten metal entering the mold cavity will not be blocked and slowed down, thereby ensuring the injection speed and the molding quality of the parts. When the molten metal enters the mold cavity and the gate 3, the protruding block 41 The movable mold 1 moves into the gate 3 so that the molten metal in the gate 3 has a depression at the position corresponding to the protruding block 41 after cooling and forming. After the part is formed, the protruding block 41 moves into the accommodating groove, and the movable mold 1 moves away from the fixed mold 2. A demoulding ejector rod is also provided in the fixed mold 2. The demoulding ejector rod pushes the part out of the fixed mold 2. The part is located on the movable mold 1, and the position of the part corresponding to the gate 3 is separated from the gate 3. The two clamping blocks 51 clamp the position of the part corresponding to the gate 3, and the clamping protrusions 52 on the two clamping blocks 51 are located in the depression.

[0044] By setting a raised block 41 at the position of the gate 3, a depression corresponding to the raised block 41 is formed at the position of the raised block 41 after the part is molded, and the two clamping blocks 51 clamp the position of the gate 3 corresponding to the part. The clamping protrusions 52 on the two clamping blocks 51 are located in the depression. The part is removed and the clamped part is more firmly clamped. During the clamping process, the clamping protrusions 52 are located in the depression to limit the part, making it less likely to shake and slide, making the part more stable, and preventing the part from falling off the clamping block 51. At the same time, because the clamping position corresponds to the gate 3, the part corresponding to the gate 3 position of the molded part needs to be cut and polished. Clamping at this position can use a larger clamping force to ensure the clamping strength. There is no need to clamp other parts of the part, and the part will not be scratched due to clamping, thereby improving the molding quality of the part.

[0045] Further, refer to Figure 1-Figure 13 A casting tube 6 is also provided on the fixed mold 2, and a casting push rod 7 is provided in the casting tube 6. The protruding assembly 4 also includes a moving screw 42, a moving screw barrel 43, an extrusion plate 44 and an extrusion rod 45. The casting push rod 7 can drive the extrusion rod 45 to move, and the extrusion rod 45 can push the extrusion plate 44 to move. When the extrusion plate 44 moves, it can drive the moving screw barrel 43 to rotate. The moving screw 42 is inserted in the moving screw barrel 43 and is threadedly matched with the moving screw barrel 43. The moving screw 42 is fixedly mounted on the protruding block 41.

[0046] The molten metal is passed into the casting tube 6, and the casting push rod 7 pushes the molten metal into the mold cavity through the gate 3. When the casting push rod 7 moves close to the gate 3, the casting push rod 7 drives the extrusion rod 45 to move, the extrusion rod 45 drives the extrusion plate 44 to move, the extrusion plate 44 drives the moving screw barrel 43 to rotate, the moving screw 42 moves in the moving screw barrel 43, and the moving screw 42 drives the protruding block 41 to move into the gate 3. When the protruding block 41 moves into the gate 3, the casting push rod 7 moves to contact the gate 3, pushes the molten metal into the gate 3 and compacts the molten metal in the mold cavity.

[0047] Further, refer to Figure 1-Figure 13 The protrusion assembly 4 also includes a transmission unit 46, which includes a transmission rack 461, a transmission gear 462, a transmission shaft 463, a transmission active pulley 464, a transmission passive pulley 465 and a transmission belt 466. The transmission shaft 463 is rotatably connected in the accommodating groove, the transmission gear 462 is fixedly mounted on the transmission shaft 463, the transmission rack 461 is fixedly mounted on the extrusion plate 44, the transmission rack 461 is meshed with the transmission gear 462, the transmission active pulley 464 is fixedly mounted on the transmission shaft 463, the transmission passive pulley 465 is fixedly mounted on the moving screw barrel 43, and the transmission belt 466 is connected to the transmission active pulley 464 and the transmission passive pulley 465.

[0048] When the extrusion rod 45 moves, the extrusion rod 45 pushes the extrusion plate 44 to move, and the extrusion plate 44 drives the transmission rack 461 to move, and the transmission rack 461 drives the transmission gear 462 to rotate, and the transmission gear 462 drives the transmission shaft 463 to rotate, and the transmission shaft 463 drives the transmission active pulley 464 to rotate, and the transmission active pulley 464 drives the transmission belt 466 to move, and the transmission belt 466 drives the transmission passive pulley 465 to rotate, and the transmission passive pulley 465 drives the moving screw barrel 43 to rotate, and the moving screw 42 moves in the moving screw barrel 43, and the moving screw 42 drives the protruding block 41 to move. By making the diameter of the transmission active pulley 464 larger than that of the transmission passive pulley 465, the smaller movement of the extrusion rod 45 can drive the protruding block 41 to move a larger movement, so that after the casting push rod 7 pushes the molten metal into the mold cavity, it drives the protruding block 41 to enter the gate 3. At this time, the movement of the casting push rod 7 pushes the molten metal into the gate 3 and compacts the molten metal in the mold cavity.

[0049] Further, refer to Figure 1-Figure 13The protruding assembly 4 also includes a stabilizing unit 47, which includes a stabilizing rod 471, a stabilizing cylinder 472, a reset spring 473, a stabilizing block 474 and a stabilizing seat 475. The stabilizing rod 471 is fixedly mounted on the extrusion plate 44, the stabilizing cylinder 472 is fixedly mounted on the groove wall of the accommodating groove, the stabilizing rod 471 is inserted into the stabilizing cylinder 472 and slidably cooperates with the stabilizing cylinder 472, one end of the reset spring 473 is fixedly mounted on the stabilizing cylinder 472, the other end of the reset spring 473 is fixedly mounted on the extrusion plate 44, and the reset spring 473 is sleeved on the stabilizing rod 471, the stabilizing block 474 is fixedly mounted on the bottom of the transmission rack 461, and the stabilizing seat 475 is fixedly mounted on the groove wall of the accommodating groove corresponding to the stabilizing block 474, and a stabilizing groove is opened on the stabilizing seat 475, and the stabilizing block 474 slidably cooperates in the stabilizing groove.

[0050] The movement of the extrusion plate 44 drives the stabilizing rod 471 to move, and the stabilizing rod 471 moves in the stabilizing cylinder 472, making the extrusion plate 44 more stable and not easy to shake. At the same time, the extrusion plate 44 squeezes the reset spring 473, and at the same time, the extrusion plate 44 drives the stabilizing block 474 to move, and the stabilizing block 474 slides on the stabilizing seat 475, further making the extrusion plate 44 more stable. When the parts are formed, the movable mold 1 moves away from the fixed mold 2, and the casting push rod 7 moves away from the fixed mold 2. The reset spring 473 drives the extrusion plate 44 to move and reset, and the extrusion plate 44 drives the transmission rack 461 to move. The transmission rack 461 drives the moving screw barrel 43 to rotate through the transmission gear 462, the transmission active pulley 464, the transmission belt 466 and the transmission passive pulley 465. The moving screw 42 moves in the moving screw barrel 43, and the moving screw 42 drives the protruding block 41 to enter the accommodating groove.

[0051] Further, refer to Figure 1-Figure 13 The protruding assembly 4 also includes a fixing plate 48 and a fixing rod 49 . The movable screw 43 is rotatably connected to the fixing plate 48 . The fixing rod 49 is fixedly mounted on the protruding block 41 . The fixing rod 49 penetrates the fixing plate 48 and slidably cooperates with the fixing plate 48 .

[0052] The fixing plate 48 limits the fixing rod 49, and the fixing rod 49 makes the protruding block 41 more stable and less likely to shake.

[0053] The transmission belt 466 is a steel belt to improve heat resistance. This is a prior art and will not be described in detail.

[0054] Further, refer to Figure 1-Figure 13 The protruding assembly 4 also includes an extrusion cylinder 8, which is slidably fitted on the casting tube 6, an extrusion rod 45 is fixedly installed on the extrusion cylinder 8, the extrusion rod 45 is abutted against the extrusion plate 44, a connecting spring 9 is fixedly installed on the extrusion cylinder 8, and the other end of the connecting spring 9 is fixedly installed on the fixed mold 2, and a pushing block 10 is fixedly installed on the side wall of the casting push rod 7 away from the casting tube 6.

[0055] The casting push rod 7 drives the pushing block 10. When the pushing block 10 moves to contact with the extrusion cylinder 8 and continues to move, the pushing block 10 pushes the extrusion cylinder 8 to move, and the extrusion cylinder 8 drives the extrusion rod 45 to move. At the same time, the extrusion cylinder 8 squeezes the connecting spring 9. When the parts are formed, the casting push rod 7 moves in the opposite direction, and the connecting spring 9 resets to drive the extrusion cylinder 8 to reset.

[0056] Further, refer to Figure 1-Figure 13 The material picking assembly 5 also includes a linear drive 53, a fixed table 54, a lifting push rod 55 and two clamping push rods 56. The fixed table 54 is installed on the linear drive 53, and the linear drive 53 can drive the fixed table 54 to move. The lifting push rod 55 is fixedly installed on the fixed table 54. The two clamping push rods 56 are fixedly installed at the output end of the lifting push rod 55. The two clamping blocks 51 are respectively fixedly installed at the corresponding output ends of the clamping push rods 56, and the two clamping protrusions 52 are respectively fixedly installed on the corresponding clamping blocks 51.

[0057] After the part is formed, the movable mold 1 moves away from the fixed mold 2, the linear drive 53 drives the fixed platform 54 to move, the fixed platform 54 drives the lifting push rod 55 and the clamping block 51 to move, and the clamping block 51 is moved to above the position of the corresponding gate 3 of the part, the lifting push rod 55 drives the clamping block 51 to move downward, so that the two clamping blocks 51 are located on both sides of the position of the corresponding gate 3 of the part, the two clamping push rods 56 drive the two clamping blocks 51 to move, the two clamping blocks 51 clamp the corresponding gate 3 part of the part, and at the same time, the clamping protrusions 52 on the two clamping blocks 51 enter the depression formed by the corresponding protrusion block 41 of the part to clamp the part, and at the same time, the two clamping protrusions 52 clamp the part more firmly through the depression on the part, and the part is removed after clamping, so that the material removal and transfer of the part are more stable, and the clamping effect is better.

[0058] Further, refer to Figure 1-Figure 13 A feed funnel 11 is fixedly connected to the casting tube 6, a limit slider 12 is fixedly installed on the casting tube 6, a limit hole is provided on the extrusion cylinder 8, and the limit slider 12 is slidably fitted in the limit hole.

[0059] The molten metal enters the casting tube 6 in a quantitative manner through the feeding funnel 11. When the extrusion cylinder 8 moves on the casting tube 6, the limit slider 12 limits the extrusion cylinder 8, making the movement of the extrusion cylinder 8 more stable and less prone to shaking. The limit slider 12 is fixedly installed on the casting shell 13 to make the casting tube 6 more stable.

[0060] Further, refer to Figure 1-Figure 13 The movable mold 1 and the fixed mold 2 are both mounted on the casting shell 13, the linear drive 53 is fixedly mounted on the casting shell 13, and the movable mold 1 and the casting push rod 7 are both equipped with hydraulic presses.

[0061] The hydraulic press moves the movable mold 1 and the casting push rod 7, which is a prior art.

[0062] A casting method for ductile iron elevator castings uses the ductile iron casting equipment.

[0063] After the casting is completed, a release agent needs to be sprayed on the movable mold 1, the fixed mold 2, the gate 3 and the protruding block 41 to prevent sticking and facilitate demoulding.

[0064] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A ductile iron casting device, comprising a movable die (1) and a fixed die (2), characterized in that: The fixed mold (2) is provided with a gate (3), and receiving grooves are provided on both sides of the gate (3), and protrusion components (4) are arranged in the receiving grooves. The protrusion components (4) include protrusion blocks (41). When the molten material enters the mold cavity from the gate (3), the protrusion blocks (41) are located in the receiving grooves. After the molten material enters the mold cavity from the gate (3), the protrusion blocks (41) move into the gate (3), and the protrusion blocks (41) are close to the side walls of the gate (3) and match the gate (3). A material taking assembly (5) is arranged above the fixed mold (2), and the material taking assembly (5) further comprises a clamping block (51) and a clamping protrusion (52), wherein the clamping protrusion (52) is fixedly mounted on the clamping block (51), the inner wall of the clamping block (51) matches the gate (3), and the clamping protrusion (52) matches the protrusion block (41); The fixed mold (2) is also provided with a casting tube (6), and a casting push rod (7) is provided in the casting tube (6). The protruding assembly (4) also includes a movable screw (42), a movable screw barrel (43), an extrusion plate (44) and an extrusion rod (45). The casting push rod (7) can drive the extrusion rod (45) to move, and the extrusion rod (45) can push the extrusion plate (44) to move. When the extrusion plate (44) moves, it can drive the movable screw barrel (43) to rotate. The movable screw (42) is inserted into the movable screw barrel (43) and is threadedly matched with the movable screw barrel (43). The movable screw (42) is fixedly mounted on the protruding block (41); The protrusion assembly (4) also includes a transmission unit (46), the transmission unit (46) includes a transmission rack (461), a transmission gear (462), a transmission shaft (463), a transmission driving pulley (464), a transmission passive pulley (465) and a transmission belt (466), the transmission shaft (463) is rotatably connected in the accommodating groove, the transmission gear (462) is fixedly mounted on the transmission shaft (463), the transmission rack (461) is fixedly mounted on the extrusion plate (44), the transmission rack (461) is meshed with the transmission gear (462), the transmission driving pulley (464) is fixedly mounted on the transmission shaft (463), the transmission passive pulley (465) is fixedly mounted on the moving screw barrel (43), and the transmission belt (466) is connected to the transmission driving pulley (464) and the transmission passive pulley (465); The protrusion assembly (4) further comprises a stabilizing unit (47), wherein the stabilizing unit (47) comprises a stabilizing rod (471), a stabilizing cylinder (472), a reset spring (473), a stabilizing block (474) and a stabilizing seat (475), wherein the stabilizing rod (471) is fixedly mounted on the extrusion plate (44), the stabilizing cylinder (472) is fixedly mounted on the groove wall of the accommodating groove, the stabilizing rod (471) is inserted into the stabilizing cylinder (472) and slidably cooperates with the stabilizing cylinder (472), and the reset spring (473) One end of the stabilizing cylinder (472) is fixedly mounted on the stabilizing cylinder (472), the other end of the reset spring (473) is fixedly mounted on the extrusion plate (44), and the reset spring (473) is sleeved on the stabilizing rod (471), the stabilizing block (474) is fixedly mounted on the bottom of the transmission rack (461), the stabilizing seat (475) is fixedly mounted on the groove wall of the accommodating groove corresponding to the stabilizing block (474), and a stabilizing groove is provided on the stabilizing seat (475), and the stabilizing block (474) is slidably fitted in the stabilizing groove.

2. A ductile iron casting equipment according to claim 1, characterized in that: The protrusion assembly (4) also includes a fixed plate (48) and a fixed rod (49), the movable screw (43) is rotatably connected to the fixed plate (48), the fixed rod (49) is fixedly installed on the protrusion block (41), and the fixed rod (49) passes through the fixed plate (48) and slidably cooperates with the fixed plate (48).

3. A ductile iron casting equipment according to claim 1, characterized in that: The casting tube (6) is slidably fitted with an extrusion cylinder (8), the extrusion rod (45) is fixedly mounted on the extrusion cylinder (8), the extrusion rod (45) abuts against the extrusion plate (44), a connecting spring (9) is fixedly mounted on the extrusion cylinder (8), the other end of the connecting spring (9) is fixedly mounted on the fixed mold (2), and a pushing block (10) is fixedly mounted on the side wall of one end of the casting push rod (7) away from the casting tube (6).

4. A ductile iron casting equipment according to claim 1, characterized in that: The material taking component (5) further comprises a linear drive (53), a fixed platform (54), a lifting push rod (55) and two clamping push rods (56); the fixed platform (54) is mounted on the linear drive (53); the linear drive (53) can drive the fixed platform (54) to move; the lifting push rod (55) is fixedly mounted on the fixed platform (54); the two clamping push rods (56) are fixedly mounted on the output end of the lifting push rod (55); the two clamping blocks (51) are respectively fixedly mounted on the corresponding output ends of the clamping push rods (56); and the two clamping protrusions (52) are respectively fixedly mounted on the corresponding clamping blocks (51).

5. A ductile iron casting equipment according to claim 3, characterized in that: The casting tube (6) is fixedly connected to a feeding funnel (11), a limiting slider (12) is fixedly installed on the casting tube (6), a limiting hole is provided on the extrusion cylinder (8), and the limiting slider (12) is slidably fitted in the limiting hole.

6. A ductile iron casting equipment according to claim 4, characterized in that: The movable mold (1) and the fixed mold (2) are both mounted on a casting shell (13), the linear drive (53) is fixedly mounted on the casting shell (13), and the movable mold (1) and the casting push rod (7) are both equipped with a hydraulic press.

7. A casting method for ductile iron elevator castings, characterized in that: A ductile iron casting device as described in any one of claims 1 to 6 is used.

Images