Automatic casting molding device for nodular iron casting

Abstract

The utility model relates to the technical field of nodular cast iron, in particular to an automatic casting forming device for nodular cast iron castings, which comprises a storage smelting furnace, a liquid conveying structure is rotatably clamped on the front side surface of the storage smelting furnace, a replaceable sprue gate is rotatably clamped at the front end of the liquid conveying structure, and the liquid conveying structure comprises a heat insulation cylinder. An electromagnetic induction heating coil is wound and embedded in the heat insulation cylinder, and a high-temperature-resistant inner container is fixedly installed in the heat insulation cylinder in a penetrating mode. When molten iron is conveyed through the liquid conveying structure, the high-temperature-resistant inner container makes direct contact with and conveys high-temperature molten iron, meanwhile, the electromagnetic induction heating coil is powered on, the molten iron is kept in a hot melting state all the time according to the electromagnetic induction heating principle, and the situation that due to the fact that the conveying distance of the molten iron is too long, temperature dissipation of the molten iron is reduced is avoided; and solid coagulated blocks appear in the molten iron, so that the pouring effect is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of ductile iron, in particular to an automatic pouring and forming device for ductile iron castings. Background Technique

[0002] Ductile iron obtains spherical graphite through spheroidizing and inoculation treatment, effectively improving the mechanical properties of cast iron, especially improving plasticity and toughness, so as to obtain higher strength than carbon steel. During the production of ductile iron castings, casting is mostly used for forming.

[0003] However, the current casting method is mostly to pour the molten iron in the storage container, pour the molten iron into the conveying channel, and inject it into the forming mold under the guidance of the conveying channel to complete the casting and forming work. With this casting method, the surface of the molten iron in the container will be in direct contact with the air, generating oxidation slag, which requires workers to skim the slag frequently. At the same time, when the molten iron is transported on the conveying channel, it will continuously dissipate heat outward, resulting in a continuous decrease in the temperature of the molten iron itself. When the conveying channel is too long, solidified substances will be generated in the molten iron, affecting the pouring effect. Content of the Utility Model

[0004] The purpose of the utility model is to provide an automatic pouring and forming device for ductile iron castings to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An automatic pouring and forming device for ductile iron castings includes a storage furnace. A liquid infusion structure is rotatably clamped to the front surface of the storage furnace. A replaceable pouring port is rotatably clamped to the front end of the liquid infusion structure. The liquid infusion structure includes a heat insulation cylinder. An electromagnetic induction heating coil is wound and buried inside the heat insulation cylinder. A high-temperature resistant inner liner is fixedly inserted inside the heat insulation cylinder.

[0007] Furthermore: The storage furnace includes a furnace body. A molten liquid storage tank is opened inside the furnace body. A guiding bottom groove is opened at the bottom side of the molten liquid storage tank. A discharge port is opened at the front end of the guiding bottom groove. A motor is embedded and installed at the lower edge of the front surface of the furnace body. A gear is fixedly installed at the output end of the motor.

[0008] Furthermore: End rings are fixedly installed at both ends of the heat insulation cylinder. Bearings are sleeved on the outer edges of the end rings. The outer rings of the bearings are fixedly connected to the inner side of the support ring. An installation seat is fixedly installed at the bottom side of the support ring.

[0009] Furthermore: Both ends of the electromagnetic induction heating coil are fixedly connected with annular conductive sliding rails. The annular conductive sliding rails are embedded and installed on the inner surface of the end ring. A conductive slider is slidably connected inside the annular conductive sliding rail. The upper end of the conductive slider is fixedly connected to the support ring.

[0010] Furthermore, docking sockets are fixedly installed at both ends of the high-temperature resistant inner tank, and an external toothed ring is fixedly sleeved on the side surface of the docking socket at the rear end of the high-temperature resistant inner tank.

[0011] Furthermore, the replaceable pouring port includes a pouring port main body, a docking port is fixedly installed at the opening at the rear end of the pouring port main body, a top mounting bracket is fixedly installed above the docking port, a bottom support bracket is fixedly installed at the bottom side of the docking port, and a mounting screw piece is fixedly installed at the rear end of the bottom support bracket.

[0012] Furthermore, the discharge port is rotationally clamped with the docking socket at the rear end of the high-temperature resistant inner tank, the gear meshes with the external toothed ring, and the docking port is rotationally clamped with the docking socket at the front end of the high-temperature resistant inner tank.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. The molten iron stored in the storage furnace is transported to the position where the casting mold is located through the infusion structure, and is injected into the mold through the replaceable pouring port for casting and forming work. When transporting the molten iron through the infusion structure, the high-temperature resistant inner tank directly contacts and transports the high-temperature molten iron. At the same time, the electromagnetic induction heating coil is energized, and using the principle of electromagnetic induction heating, the molten iron is kept in a molten state at all times, avoiding the occurrence of solid condensation blocks in the molten iron due to the long transportation distance and the reduction of the molten iron temperature, which affects the pouring effect.

[0015] 2. The pouring port main body is designed to be detachable, and different types of pouring port main bodies can be equipped according to different casting molds, so that the docking socket and the docking port are mutually docked, and fixed installation is carried out with the support ring and the mounting seat at the rear end of the heat insulation cylinder as the installation basis. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall structural schematic diagram of the present utility model;

[0017] Figure 2 is the schematic diagram of the storage furnace in the present utility model;

[0018] Figure 3 is the schematic diagram of the infusion structure in the present utility model;

[0019] Figure 4 is the schematic diagram of the replaceable pouring port in the present utility model;

[0020] Figure 5 is the present utility model Figure 3 Enlarged view at A in.

[0021] In the figure: 1. Melting furnace for storage; 101. Melting furnace main body; 102. Molten liquid storage tank; 103. Guiding bottom tank; 104. Discharge port; 105. Motor; 106. Gear; 2. Liquid infusion structure; 201. Heat insulation cylinder; 202. End ring; 203. Bearing; 204. Support ring; 205. Mounting seat; 206. Electromagnetic induction heating coil; 207. Ring-shaped conductive slide rail; 208. Conductive slider; 209. High-temperature resistant inner liner; 310. Docking socket; 311. External gear ring; 3. Replaceable pouring port; 301. Pouring port main body; 302. Docking port; 303. Top mounting frame; 304. Bottom support frame; 305. Mounting screw plate. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1 to 5 , in the embodiment of the present invention, an automatic pouring and molding device for ductile iron castings includes a melting furnace 1 for storage. A liquid infusion structure 2 is rotatably and detachably connected to the front side surface of the melting furnace 1 for storage. A replaceable pouring port 3 is rotatably and detachably connected to the front end of the liquid infusion structure 2. The liquid infusion structure 2 includes a heat insulation cylinder 201, and an electromagnetic induction heating coil 206 is wound and buried inside the heat insulation cylinder 201, and a high-temperature resistant inner liner 209 is fixedly inserted inside the heat insulation cylinder 201.

[0024] Specifically, the molten iron stored in the melting furnace 1 for storage is transported to the position where the casting and molding die is located through the liquid infusion structure 2, and is injected into the die through the replaceable pouring port 3 for casting and molding work. When transporting the molten iron through the liquid infusion structure 2, the high-temperature resistant inner liner 209 directly contacts and transports the high-temperature molten iron. At the same time, the electromagnetic induction heating coil 206 is energized, and using the principle of electromagnetic induction heating, the molten iron is kept in a molten state at all times, avoiding the solidification of the molten iron due to the long transportation distance and the reduction of the molten iron temperature, resulting in the appearance of solidified lumps in the molten iron and affecting the pouring effect.

[0025] Embodiment 1

[0026] As Figures 1 - 3 shown, in this embodiment, the melting furnace 1 for storage includes a melting furnace main body 101. A molten liquid storage tank 102 is opened inside the melting furnace main body 101. A guiding bottom tank 103 is opened at the bottom side of the molten liquid storage tank 102. A discharge port 104 is opened at the front end of the guiding bottom tank 103; the discharge port 104 is rotatably and detachably connected to the docking socket 210 at the rear end of the high-temperature resistant inner liner 209.

[0027] In this embodiment, the molten iron storage tank 102 in the furnace main body 101 temporarily stores the hot molten iron. The guiding bottom tank 103 and the discharge port 104 cooperate with each other to guide and discharge the bottom molten iron from the bottom of the molten iron storage tank 102, avoiding the mixing of the slag in the oxide layer on the surface of the molten iron into the molten iron for transportation and casting, and improving the casting forming effect.

[0028] As Figures 1 - 3 As shown in Fig. 5, in this embodiment, a motor 105 is embedded and installed at the lower edge of the front surface of the furnace main body 101, and a gear 106 is fixedly installed at the output end of the motor 105; end rings 202 are fixedly installed at both ends of the heat insulation cylinder 201, a bearing 203 is sleeved on the outer edge of the end ring 202, the outer ring of the bearing 203 is fixedly connected to the inner side of the support ring 204, and a mounting seat 205 is fixedly installed at the bottom side of the support ring 204; both ends of the electromagnetic induction heating coil 206 are fixedly connected with an annular conductive slide rail 207, the annular conductive slide rail 207 is embedded and installed on the inner surface of the end ring 202, a conductive slider 208 is slidably connected in the annular conductive slide rail 207, and the upper end of the conductive slider 208 is fixedly connected to the support ring 204; butt joints 210 are fixedly installed at both ends of the high-temperature resistant inner liner 209, and an external toothed ring 211 is fixedly sleeved on the side surface of the butt joint 210 at the rear end of the high-temperature resistant inner liner 209; the gear 106 meshes with the external toothed ring 211.

[0029] During specific implementation, the bearing 203 endows the support ring 204 at both ends of the heat insulation cylinder 201 with a rotational support effect for the end ring 202, providing a basis for the independent rotation of the infusion structure 2. Then, the motor 105 drives the external toothed ring 211 through the gear 106, thereby controlling the synchronous rotation of the heat insulation cylinder 201 and the high-temperature resistant inner liner 209, enabling the molten iron to turn in the high-temperature resistant inner liner 209 and enabling the molten iron to be fully contacted by the electromagnetic induction of the electromagnetic induction heating coil 206.

[0030] Embodiment Two

[0031] On the basis of Embodiment One, in order to make up for the fact that in Embodiment One, the types of workpieces for casting forming are diverse, the corresponding workpiece forming molds are also different, and the openings for injecting molten iron on the molds are also different, a single type of pouring port is difficult to undertake the pouring work for multiple types of molds.

[0032] As Figure 1 、 4 As shown in Fig., in this embodiment, the replaceable pouring port 3 includes a pouring port main body 301, a butting port 302 is fixedly installed at the rear opening of the pouring port main body 301, a top mounting frame 303 is fixedly installed on the upper side of the butting port 302, a bottom support frame 304 is fixedly installed on the bottom side of the butting port 302, and a mounting screw plate 305 is fixedly installed at the rear end of the bottom support frame 304; the butting port 302 is rotationally clamped with the butt joint 210 at the front end of the high-temperature resistant inner liner 209.

[0033] In specific implementation, the casting gate body 301 is designed to be detachable, and different types of casting gate bodies 301 can be equipped according to different casting molds. The docking socket 210 and the docking port 302 are docked with each other, and fixed installation is carried out with the support ring 204 and the mounting seat 205 at the rear end of the heat insulation cylinder 201 as the installation basis.

[0034] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0035] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic casting and molding device for ductile iron castings, comprising a storage furnace (1), characterized in that: The front surface of the storage furnace (1) is rotatably connected to an infusion structure (2), and the front end of the infusion structure (2) is rotatably connected to a replaceable pouring port (3). The infusion structure (2) comprises an insulation tube (201), an electromagnetic induction heating coil (206) is installed and buried inside the insulation tube (201), and a high-temperature resistant inner liner (209) is fixedly inserted and installed inside the insulation tube (201).

2. The automatic pouring and molding device for ductile iron castings according to claim 1, characterized in that: The storage furnace (1) comprises a furnace body (101), a molten liquid storage tank (102) is provided inside the furnace body (101), a guide bottom tank (103) is provided at the bottom side of the molten liquid storage tank (102), a discharge port (104) is provided at the front end of the guide bottom tank (103), a motor (105) is embedded in the lower edge of the front surface of the furnace body (101), and a gear (106) is fixedly installed at the output end of the motor (105).

3. The automatic pouring and molding device for ductile iron castings according to claim 2, characterized in that: End rings (202) are fixedly mounted at both ends of the heat-insulating cylinder (201); a bearing (203) is sleeved on the outer edge of the end ring (202); the outer ring of the bearing (203) is fixedly connected to the inner side of a support ring (204); and a mounting seat (205) is fixedly mounted on the bottom side of the support ring (204).

4. The automatic pouring and molding device for ductile iron castings according to claim 3 is characterized in that: An annular conductive slide rail (207) is fixedly connected to both ends of the electromagnetic induction heating coil (206); the annular conductive slide rail (207) is embedded in the inner surface of the end ring (202); a conductive slider (208) is slidably connected inside the annular conductive slide rail (207); and the upper end of the conductive slider (208) is fixedly connected to the support ring (204).

5. The automatic pouring and molding device for ductile iron castings according to claim 4, characterized in that: The two ends of the high temperature resistant inner liner (209) are fixedly mounted with docking sockets (210), and the side surface of the docking socket (210) at the rear end of the high temperature resistant inner liner (209) is fixedly sleeved with an external toothed ring (211).

6. The automatic pouring and molding device for ductile iron castings according to claim 5, characterized in that: The replaceable pouring port (3) comprises a pouring port body (301), a docking port (302) is fixedly mounted at the rear end opening of the pouring port body (301), a top mounting frame (303) is fixedly mounted on the upper side of the docking port (302), a bottom supporting frame (304) is fixedly mounted on the bottom side of the docking port (302), and a mounting screw (305) is fixedly mounted at the rear end of the bottom supporting frame (304).

7. The automatic pouring and molding device for ductile iron castings according to claim 6, characterized in that: The discharge port (104) is rotationally engaged with the docking socket (210) at the rear end of the high temperature resistant inner liner (209), the gear (106) and the outer gear ring (211) are meshed with each other, and the docking port (302) is rotationally engaged with the docking socket (210) at the front end of the high temperature resistant inner liner (209).

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