Tilting casting machine with coreless inductor

Abstract

The utility model belongs to the field of casting machine technology especially a tilting type casting machine with coreless inductor, including floor, the side of floor inner wall is provided with walking mechanism, and the side welding of walking mechanism top outer wall has first vertical board, the first vertical board top outer wall articulates has the casting machine pot body, and articulates between the casting machine pot body and walking mechanism has first hydraulic push rod. The utility model has developed the swing type casting machine of casting machine coreless inductor, it has adopted the coreless inductor mechanism of easy to build furnace, also adopts swing type (tilting) furnace body to save the air pressure system and makes casting process become simple and easy, adopts swing type pot body and pours the groove body, below has coreless inductor, and the groove body and pot body have the split surface, convenient transportation, maintenance and replacement, the inductor below the casting machine also has the split surface between the casting machine pot body, also convenient transportation, build furnace, maintenance and replacement.

Description

Technical Field

[0001] This utility model relates to the field of casting machine technology, and in particular to a tilting casting machine with a coreless sensor. Background Technology

[0002] Currently, in the foundry industry, commonly used casting machines are divided into two main categories. One type is without a heating device, such as a funnel-shaped casting machine, which uses a controllable stopper rod mechanism for pouring. The other type has a heating device, with an inductor added under the casting pot, mostly of the core type (or grooved inductor). By applying air pressure to the relatively sealed pot, molten metal is forced into the pouring tank, and the stopper rod is used for pouring.

[0003] Some casting machines use coreless inductors directly in a near-rhomboid shape, which serves as the casting vessel. A stopper rod is attached to the long end of the rhomboid vessel for pouring (e.g., Kangyingsi). Unheated casting machines are generally used for pouring spheroidized cast iron. Because there is no heating, the working time is shorter, which aligns with the spheroidizing process. If the temperature of the molten metal in the casting machine becomes too low, it must be reversed and transferred to the ladle, then returned to the heating furnace (usually a medium-frequency melting furnace) for reheating before reuse. Heated casting machines generally have two key components: a cored inductor (grooved inductor) for heat preservation or limited heating, and a pneumatic system for precisely controlling the molten metal level in the casting tank to achieve accurate pouring.

[0004] However, furnace construction based on core-type sensors is complex and not very suitable for applications with varying metal casting materials. Controlling the pneumatic system is another challenge. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a tilting casting machine with a coreless sensor. It adopts a swing-type casting machine with a coreless sensor, which not only uses a coreless sensor mechanism that is easy to build a furnace, but also uses a swing-type (tilting) furnace body to eliminate the need for a pneumatic system, thus making the casting process simple and easy to implement.

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

[0007] A tilting casting machine with a coreless sensor includes a floor. A walking mechanism is provided on one side of the inner wall of the floor, and a first vertical plate is welded to one side of the top outer wall of the walking mechanism. A casting machine pot body is hinged to the top outer wall of the first vertical plate, and a first hydraulic push rod is hinged between the casting machine pot body and the walking mechanism. A coreless sensor for the casting machine is provided at the bottom of the casting machine pot body. A mounting base is provided on the other side of the inner wall of the floor, and a second vertical plate is welded to the top outer wall of the mounting base. A boiler mounting plate is hinged to the top outer wall of the second vertical plate, and a second hydraulic push rod is hinged between the boiler mounting plate and the mounting base. A melting furnace is installed through the inner wall of the boiler mounting plate.

[0008] Preferably, a third hydraulic push rod is fixedly connected to the top outer wall of the boiler mounting plate by screws, and the piston rod of the third hydraulic push rod is fixedly connected to a lifting rod.

[0009] Preferably, a lid is provided on the outer wall of one end of the lifting rod, and the lid is fixedly connected to the top outer wall of the melting furnace by screws.

[0010] Preferably, the inside of the casting machine pot is provided with a casting trough, and a fence is provided on the top outer wall of the casting machine pot.

[0011] Preferably, a weighing mechanism is provided between the casting machine pot body and the traveling mechanism.

[0012] Preferably, the walking mechanism includes a guide rail, a slider, and a drive motor. The guide rail is fixedly installed on the inner wall of the floor, the slider is slidably connected to the guide rail, the drive motor is fixed on one side of the slider and drives the guide rail, and the first vertical plate is welded to the top outer wall of the slider.

[0013] Preferably, the weighing mechanism uses a pressure sensor, which is fixedly installed on the top outer wall of the walking mechanism, and the bottom of the casting machine pot is in contact with the pressure sensor. The pressure sensor is electrically connected to an external display terminal.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. The tilting casting machine with coreless sensor in this design has developed a swing casting machine with coreless sensor. It adopts a coreless sensor mechanism that is easy to build furnaces, and a swing (tilting) furnace body to eliminate the need for a gas pressure system, making the casting process simple and easy.

[0016] 2. The tilting casting machine with a coreless sensor designed in this paper adopts a swing-type pot body and a casting tank body. The coreless sensor is located below. The casting tank body and the pot body have a dividing surface, which facilitates transportation, maintenance and replacement. The sensor below the casting machine also has a dividing surface between it and the casting machine pot body, which also facilitates transportation, furnace construction, maintenance and replacement. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall pouring position of a tilting pouring machine with a coreless sensor proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of a tilting casting machine with a coreless sensor during the lifting and heat preservation process proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of a tilting casting machine with a coreless sensor proposed in this utility model during emergency tilting.

[0020] In the diagram: 1. Floor; 2. Walking mechanism; 3. First vertical plate; 4. Casting machine pot body; 5. First hydraulic push rod; 6. Casting machine coreless sensor; 7. Mounting base; 8. Second vertical plate; 9. Boiler mounting plate; 10. Second hydraulic push rod; 11. Melting furnace; 12. Third hydraulic push rod; 13. Lifting rod; 14. Pot lid; 15. Casting machine casting tank; 16. Weighing mechanism; 17. Fence. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figures 1-3 Example 1: A tilting casting machine with a coreless sensor includes a floor 1, a walking mechanism 2 is provided on one side of the inner wall of the floor 1, and a first vertical plate 3 is welded to one side of the top outer wall of the walking mechanism 2. A casting machine pot body 4 is hinged to the top outer wall of the first vertical plate 3, and a first hydraulic push rod 5 is hinged between the casting machine pot body 4 and the walking mechanism 2. A coreless sensor 6 for the casting machine is provided at the bottom of the casting machine pot body 4.

[0023] According to the above scheme, the walking mechanism 2 uses a linear guide rail of model SKF-LIN-150, a matching slider, and a drive motor of model YE2-100L-4. The guide rail is fixedly installed in the preset mounting groove on the inner wall of the floor 1 by expansion bolts. The slider slides with the guide rail. The drive motor is fixed to one side of the slider by a flange. Its output shaft is driven by a gear meshing with the rack on the guide rail, so that the slider drives the first vertical plate 3 and the casting machine pot 4 to move precisely along the guide rail. The moving speed can be adjusted by the motor frequency converter, with a range of 0.1-0.5m / s. The first hydraulic push rod 5 is an electro-hydraulic push rod of model DYTZ-500-300. Its cylinder bottom is hinged to the top of the slider of the traveling mechanism 2 through a hinge seat, and the top of the piston rod is hinged to the ear plate at the bottom of the casting machine pot 4. The piston rod is extended and retracted by the hydraulic system, thereby driving the casting machine pot 4 to tilt within a range of 0-90° around the hinge point at the top of the first vertical plate 3, meeting the needs of different working conditions such as liquid receiving, pouring, and emergency tilting. The coreless sensor 6 of the casting machine adopts an electromagnetic induction coil of model GP-200. The coil has 120 turns and a wire diameter of 8mm. The outer side is wrapped with a 10mm thick alumina ceramic high-temperature resistant insulation layer. It is fixed to the mounting bracket at the bottom of the casting machine pot 4 by bolts, and the coil is in close contact with the outer wall of the bottom of the pot. The induction frequency adjustment range is 1-10kHz, which can realize rapid heat preservation and small-scale heating of molten metal, with a heating rate of 5-10℃ / min.

[0024] In embodiment two, a mounting base 7 is provided on the other side of the inner wall of the floor 1, and a second vertical plate 8 is welded to the top outer wall of the mounting base 7. A boiler mounting plate 9 is hinged to the top outer wall of the second vertical plate 8, and a second hydraulic push rod 10 is hinged between the boiler mounting plate 9 and the mounting base 7. A melting furnace 11 is installed through the inner wall of the boiler mounting plate 9. A third hydraulic push rod 12 is fixedly connected to the top outer wall of the boiler mounting plate 9 by screws, and a lifting rod 13 is fixedly connected to the piston rod of the third hydraulic push rod 12. A pot cover 14 is provided on the outer wall of one end of the lifting rod 13, and the pot cover 14 is fixedly connected to the top outer wall of the melting furnace 11 by screws.

[0025] Through the above scheme, the mounting base 7 is welded from Q235 steel plate, and the bottom is fixed to the ground by pre-embedded bolts to ensure the stability of the overall structure. The second hydraulic push rod 10 is a DYTZ-500-300 electro-hydraulic push rod of the same model as the first hydraulic push rod 5. Its installation method is the same as that of the first hydraulic push rod 5. Through the extension and retraction of the piston rod, the boiler mounting plate 9 is tilted around the top hinge point of the second vertical plate 8. The tilting angle range is 0-30°, so as to realize the precise pouring of molten metal in the melting furnace 11 into the casting machine pot 4. The melting furnace 11 is a medium-frequency melting furnace 11 of model ZGP-50, with a rated power of 50kW and a rated capacity of 50L. The inner wall is coated with a corundum refractory coating with a thickness of 20mm. The high temperature resistance can reach 1600℃, and it can quickly melt metal raw materials to 1400-1500℃. The third hydraulic push rod 12 is a small electro-hydraulic push rod of model DYTZ-250-200. The top of the piston rod is hinged to the lifting rod 13 by a pin. The lifting rod 13 is made of 304 stainless steel and is 800mm long. Its other end is fixed to the pot lid 14 by screws. The pot lid 14 adopts a double-layer structure. The outer layer is a Q235 steel plate, and the inner layer is equipped with a 15mm thick aluminum silicate fiber insulation cotton layer. The top contact surface is equipped with a fluororubber sealing gasket. The opening and closing of the pot lid 14 is achieved by the extension and retraction of the third hydraulic push rod 12. When closed, it can effectively reduce the heat loss in the melting furnace 11 and improve the heat preservation effect by more than 30%.

[0026] The casting machine pot body 4 is equipped with a casting machine casting trough 15 inside, and a fence 17 is provided on the top outer wall of the casting machine pot body 4.

[0027] According to the above scheme, the casting machine pot body 4 is cast from ZG35CrMo heat-resistant steel, with a capacity of 60L. The inner wall is also coated with a corundum refractory coating. It is detachably connected to the casting machine pouring tank 15 by bolts, and a sealing gasket is placed on the contact surface to prevent molten metal leakage. The casting machine pouring tank 15 is made of high-quality heat-resistant cast iron, with a slot width of 80mm and a depth of 50mm. An adjustable flow throttle valve is installed at the end of the tank. By rotating the valve stem, the opening size can be changed to achieve precise control of the pouring flow rate, with a flow rate adjustment range of 1-5L / s. The enclosure 17 is welded from φ20mm stainless steel round tubes, with a height of 300mm. It is installed around the top edge of the casting machine pot body 4 at 150mm intervals, serving as a safety protection to prevent operators from accidentally coming into contact with the high-temperature pot body or being burned by splashing molten metal.

[0028] A weighing mechanism 16 is provided between the casting machine pot body 4 and the traveling mechanism 2. The weighing mechanism 16 adopts a pressure sensor. The pressure sensor is fixedly installed on the top outer wall of the traveling mechanism 2, and the bottom of the casting machine pot body 4 is in contact with the pressure sensor. The pressure sensor is electrically connected to an external display terminal.

[0029] According to the above scheme, the weighing mechanism 16 uses a YZC-216 pressure sensor with a range of 0-100kg and an accuracy of ±0.1kg. Four sensors are evenly distributed at the four corners of the top of the slider of the traveling mechanism 2 and are fixed with bolts. The sensing surface of the pressure sensor is in close contact with the support block at the bottom of the casting machine pot 4, enabling real-time detection of the total weight of the casting machine pot 4 and the molten metal inside. The detection data is transmitted via signal line to an external XK3190-A12 display terminal. The display terminal can display the weight value in real time and also has a weight alarm function. When the weight reaches the preset upper or lower limit, an audible and visual alarm will alert the operator to prevent molten metal overflow or insufficient molten metal from affecting the casting quality.

[0030] The walking mechanism 2 includes a guide rail, a slider, and a drive motor. The guide rail is fixedly installed on the inner wall of the floor 1, the slider is slidably connected to the guide rail, the drive motor is fixed on one side of the slider and drives the guide rail, and the first vertical plate 3 is welded to the top outer wall of the slider.

[0031] Through the above scheme, the SKF-LIN-150 linear guide rail selected is made of high-carbon steel, and after quenching treatment, the surface hardness reaches HRC58-62, which is highly wear-resistant and has a long service life. The slider is equipped with a ball retainer to ensure smooth sliding, with a friction coefficient as low as 0.003, reducing the operating load on the drive motor. The drive motor is a YE2-100L-4 three-phase asynchronous motor with a rated power of 3kW and a rated speed of 1440r / min. The speed is reduced to 10-50r / min by a reducer before connecting to the gear. The gear and guide rail rack meshing accuracy is grade 7, ensuring that the movement and positioning accuracy of the traveling mechanism 2 reaches ±0.5mm, meeting the positional accuracy requirements during the casting process. Simultaneously, the drive motor is equipped with an electromagnetic brake, which can quickly brake when the motor stops, preventing the slider from sliding due to inertia and improving the safety of equipment operation.

[0032] Working principle: The main body of this swing casting furnace consists of the casting machine pot body 4, the casting machine casting tank body 15 and the casting machine coreless sensor 6. Of course, there is also the weighing mechanism 16 (to weigh the weight of the casting metal) and the walking mechanism 2 (to receive the molten metal from the melting furnace 11 and transport it to the casting position).

[0033] The normal operating procedure of this furnace is as follows:

[0034] The casting machine is moved to the position of the melting furnace 11 by the walking mechanism 2. The casting machine pot 4 swings (tilts) to about 20° to receive the molten metal poured from the melting furnace 11. At this time, the coreless sensor 6 of the casting machine pot 4 is in working heating state, so that the molten metal poured into the casting machine pot 4 from the melting furnace 11 can be kept warm or even slightly heated. Then the casting machine pot 4 is moved to the pouring position and swings (tilts) to the horizontal position to carry out the pouring work. If the pouring is completed, the remaining molten metal in the casting machine pot 4 still needs to be returned to the casting machine pot 4 from the casting tank 15 and kept warm by the coreless sensor 6. At this time, the casting machine pot 4 can swing (tilt) to about 20° again and return to the raised and kept warm position. In the event of a power outage in the melting furnace 11, the casting machine pot 4 can be tilted at a angle of more than 90° to pour the remaining molten metal into a transfer bag and transport it to the melting furnace 11, or directly into an emergency pit to prevent the molten metal from solidifying and damaging the casting machine pot 4. Of course, the same procedure can be performed when it is necessary to replace the molten metal or repair the casting machine pot 4.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A tilting casting machine with a coreless sensor, comprising a floor (1), characterized in that, A walking mechanism (2) is provided on one side of the inner wall of the floor (1), and a first vertical plate (3) is welded to one side of the top outer wall of the walking mechanism (2). A casting machine pot body (4) is hinged to the top outer wall of the first vertical plate (3), and a first hydraulic push rod (5) is hinged between the casting machine pot body (4) and the walking mechanism (2). A casting machine coreless sensor (6) is provided at the bottom of the casting machine pot body (4). A mounting seat (7) is provided on the other side of the inner wall of the floor (1), and a second vertical plate (8) is welded to the top outer wall of the mounting seat (7). A boiler mounting plate (9) is hinged to the top outer wall of the second vertical plate (8), and a second hydraulic push rod (10) is hinged between the boiler mounting plate (9) and the mounting seat (7). A melting furnace (11) is installed through the inner wall of the boiler mounting plate (9).

2. A tilting casting machine with a coreless sensor according to claim 1, characterized in that, The top outer wall of the boiler mounting plate (9) is fixedly connected to a third hydraulic push rod (12) by screws, and the piston rod of the third hydraulic push rod (12) is fixedly connected to a lifting rod (13).

3. A tilting casting machine with a coreless sensor according to claim 2, characterized in that, The outer wall of one end of the lifting rod (13) is provided with a pot lid (14), and the pot lid (14) is fixedly connected to the top outer wall of the melting furnace (11) by screws.

4. A tilting casting machine with a coreless sensor according to claim 1, characterized in that, The casting machine pot body (4) is provided with a casting machine casting trough (15) inside, and a fence (17) is provided on the top outer wall of the casting machine pot body (4).

5. A tilting casting machine with a coreless sensor according to claim 1, characterized in that, A weighing mechanism (16) is provided between the casting machine pot body (4) and the walking mechanism (2).

6. A tilting casting machine with a coreless sensor according to claim 1, characterized in that, The walking mechanism (2) includes a guide rail, a slider and a drive motor. The guide rail is fixedly installed on the inner wall of the floor (1), the slider is slidably connected to the guide rail, the drive motor is fixed on one side of the slider and drives the guide rail, and the first vertical plate (3) is welded to the top outer wall of the slider.

7. A tilting casting machine with a coreless sensor according to claim 5, characterized in that, The weighing mechanism (16) uses a pressure sensor. The pressure sensor is fixedly installed on the top outer wall of the walking mechanism (2), and the bottom of the casting machine pot (4) is in contact with the pressure sensor. The pressure sensor is electrically connected to an external display terminal.

Images