Self-protection continuous pig casting machine

Abstract

The utility model discloses a self-protection continuous pig casting machine which comprises a movable lifting platform, a limiting mechanism of the movable lifting platform, a three-layer installation frame, a chain type cast ingot conveying track, an ingot mold cover plate protection mechanism, an ingot blowing gas circuit and a PLC, the movable lifting platform comprises a base, an X-direction driving assembly, a Z-direction driving assembly and the limiting mechanism, and the three-layer installation frame is installed on the movable lifting platform. The chain type cast ingot conveying track comprises two pairs of chain wheels, two annular closed tracks and a plurality of cast ingot molds, the chain type cast ingot conveying track is installed on the three-layer installation frame, the two pairs of chain wheels are arranged at the mold inlet end and the mold outlet end of the conveying track respectively, and the chain wheels and the idler wheels are in meshing transmission to drive the cast ingot molds on the conveying track to move. The ingot mold cover plate protection mechanism comprises an ingot mold cover plate, a cover plate lifting assembly, a liquid level probe, a lifting assembly of the liquid level probe, a ventilation pipe and a gas circuit assembly, the ingot mold cover plate protection mechanism is fixed to the mounting frame through a support, the PLC is electrically connected with various sensors of the ingot casting machine, a movable and closed ingot casting environment is provided for a liquid supply system inconvenient to move, and the ingot casting quality is good.

Description

Technical Field

[0001] This utility model relates to the field of metal ingot casting, and in particular to a magnesium alloy ingot casting device, which optimizes the structure of the ingot casting device to better suit the production of alloy ingots that require protection. Technical Background

[0002] Currently, most ingot casting equipment uses an unprotected open casting method, or even if there is a protective gas device at the casting point, the structure is complex and the on-site assembly requirements are strict, resulting in difficulties in adjustment and poor product protection. In addition, most ingot casting machines on the market use hammering demolding, which has disadvantages such as high noise and high labor intensity. Summary of the Invention

[0003] Therefore, to meet market needs, the technical solution provided by this utility model is as follows:

[0004] This invention addresses the aforementioned problems by designing and developing a self-protecting continuous casting machine. The machine employs a ventilated cover plate to seal the mold cavity at the casting position, followed by a protective casting method that first vents and then refills the cavity. The machine's lifting and sliding design makes it ideal for use with stationary liquid supply equipment. Furthermore, the use of air blowing for mold cooling and demolding simplifies the equipment structure.

[0005] This utility model designs a self-protected continuous ingot casting machine, which includes a mobile lifting platform and its limiting mechanism, a three-layer mounting frame, a chain ingot transfer track, an ingot mold cover plate protection mechanism, and a PLC controller. The mobile lifting platform consists of a base (1), X-axis and Z-axis drive components (2, 3), two pairs of connecting rods (6) connected by a rotating joint (4), a lower support plate (5), and an upper support plate (7). The three-layer mounting frame (8) is fixed to the upper support plate (7). The three-layer mounting frame (8) is moved and lifted as a whole under the drive of the X-axis and Z-axis drive components (2, 3). Its limiting mechanism includes an upper contact switch (19), a lower contact switch (17), and a contact connecting rod (18) which are slidably fixed at the middle position of the outer side of the mobile platform. The upper contact switch (19) and the lower contact switch (17) are electrically connected to the PLC controller.

[0006] The chain-type ingot transfer track is installed on the upper double-layer frame of the three-layer mounting frame (8). The chain-type ingot transfer track includes two pairs of parallel sprockets (9), two annular closed chain tracks (11), several ingot molds (12), several rollers (13), sprocket shafts and their support components (15), track power source (14), and heating cover (16). The two pairs of sprockets are respectively set at the mold entry end and the mold exit end of the transfer track. The ingot molds (12) are evenly distributed on the support between the two rollers (13). The rollers (13) mesh with the chain teeth at the sprockets (9) and roll on the upper and lower roller plates (23), driving the ingot molds to move. The heating cover (16) is installed above the mold entry end of the transfer track to heat the ingot molds as needed.

[0007] The ingot mold cover plate protection mechanism includes an ingot mold cover plate and its lifting component one (20), left and right vent pipes (21) and air passage components, liquid level probe and its lifting component two (22). All the above components are fixed by a support frame designed on the outside of the mounting frame (8). The ingot mold cover plate has several vent holes. The components of the ingot mold cover plate protection mechanism work together to seal, ventilate and exhaust the ingot mold cavity and detect the liquid level during casting.

[0008] The blowing pipe (27) of the cooling blowing air path consists of multiple air pipes arranged along the mold exit end and fixed on the mounting frame. It is connected to an external air supply device. Multiple air outlets blow air towards the bottom and all sides of the casting mold to accelerate the cooling of the casting and demold under the action of gravity at the mold reversal point.

[0009] The PLC controller establishes electrical and communication connections with the mobile lifting platform and its limiting mechanism, the ingot mold cover plate protection mechanism, the cooling blowing air path, and the displacement and temperature sensors on the chain casting ingot conveying track to send and receive position signals, temperature signals, and liquid level signals, so as to control the ingot casting machine to complete the walking and casting cycle according to the set program.

[0010] Compared with the open mold cavity of the existing ingot casting machine, this utility model adopts a protective casting method in which the mold cavity is sealed with a ventilated cover plate at the casting position, and then the mold cavity is vented and then filled with air. The design structure of the ingot casting machine that can be raised and lowered and can be moved horizontally is very suitable for use with stationary liquid supply equipment. Attached Figure Description

[0011] Appendix Figure 1 This is a front view of the structural schematic diagram of this utility model.

[0012] Appendix Figure 2 The left view is a structural schematic diagram of this utility model.

[0013] Appendix Figure 3 This is a partial view of the chain-type ingot conveying track of this utility model.

[0014] In the diagram: 1. Platform consists of a base; 2. X-axis drive assembly; 3. Z-axis drive assembly; 4. Rotary joint; 5. Lower support plate; 6. Connecting rod; 7. Upper support plate; 8. Three-layer mounting frame; 9. Sprocket; 10. Ingot mold mounting frame; 11. Chain track; 12. Ingot mold; 13. Roller; 14. Track power source; 15. Sprocket shaft and its support assembly; 16. Heating cover; 17. Lower contact switch; 18. Contact connecting rod; 19. Upper contact switch; 20. Ingot mold cover plate and its lifting assembly one; 21. Left and right vent pipes; 22. Liquid level probe and its lifting assembly two; 23. Roller plate; 24. Ingot block sliding plate; 25. Casting system; 26. Movable plug; 27. Ingot blowing air pipe. Detailed Implementation

[0015] The following is based on Figures 1-3 The view shown further illustrates:

[0016] The accompanying drawings of the embodiments are drawn in a simplified manner and are only used to clearly and concisely illustrate the embodiments of this utility model. The technical solutions shown in the drawings below are specific solutions of the embodiments of this invention and are not intended to limit the scope of the claimed invention. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] In the description of this utility model, the terms "design," "fixed," and "connection" should be used in a broad sense. For example, they can refer to fixed connections, detachable connections, integral connections, mechanical connections, electrical connections, direct connections, indirect connections through an intermediate medium, and internal connections between components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] This utility model designs a self-protected continuous ingot casting machine, which includes a mobile lifting platform and its limiting mechanism, a three-layer mounting frame, a chain ingot transfer track, an ingot mold cover plate protection mechanism, and a PLC controller. The mobile lifting platform consists of a base (1), X-axis and Z-axis drive components (2, 3), two pairs of connecting rods (6) connected by a rotating joint (4), a lower support plate (5), and an upper support plate (7). The three-layer mounting frame (8) is fixed to the upper support plate (7). The three-layer mounting frame (8) is moved and lifted as a whole under the drive of the X-axis and Z-axis drive components (2, 3). Its limiting mechanism includes an upper contact switch (19), a lower contact switch (17), and a contact connecting rod (18) which are slidably fixed at the middle position of the outer side of the mobile platform. The upper contact switch (19) and the lower contact switch (17) are electrically connected to the PLC controller.

[0019] The chain-type ingot transfer track is installed on the upper double-layer frame of the three-layer mounting frame (8). The chain-type ingot transfer track includes two pairs of parallel sprockets (9), two annular closed chain tracks (11), several ingot molds (12), several rollers (13), sprocket shafts and their support components (15), track power source (14), and heating cover (16). The two pairs of sprockets are respectively set at the mold entry end and the mold exit end of the transfer track. The ingot molds (12) are evenly distributed on the support between the two rollers (13). The rollers (13) mesh with the chain teeth at the sprockets (9) and roll on the upper and lower roller plates (23), driving the ingot molds to move. The heating cover (16) is installed above the mold entry end of the transfer track to heat the ingot molds as needed.

[0020] The ingot mold cover plate protection mechanism includes an ingot mold cover plate and its lifting component one (20), left and right vent pipes (21) and air passage components, liquid level probe and its lifting component two (22). All the above components are fixed by a support frame designed on the outside of the mounting frame (8). The ingot mold cover plate has several vent holes. The components of the ingot mold cover plate protection mechanism work together to seal, ventilate and exhaust the ingot mold cavity and detect the liquid level during casting.

[0021] The blowing pipe (27) of the cooling blowing air path consists of multiple air pipes arranged along the mold exit end and fixed on the mounting frame. It is connected to an external air supply device. Multiple air outlets blow air towards the bottom and all sides of the casting mold to accelerate the cooling of the casting and demold under the action of gravity at the mold reversal point.

[0022] The PLC controller establishes electrical and communication connections with the mobile lifting platform and its limiting mechanism, the ingot mold cover plate protection mechanism, the cooling blowing air path, and the displacement and temperature sensors on the chain casting ingot conveying track to send and receive position signals, temperature signals, and liquid level signals, so as to control the ingot casting machine to complete the walking and casting cycle according to the set program.

[0023] Preferably, the ingot mold cover plate has multiple ventilation holes. During ingot casting, protective gas is first introduced to exhaust the mold, and then casting is performed. The gas supply is maintained until the liquid level probe detects the liquid level and stops the gas supply, so that the magnesium liquid inside the mold cavity solidifies under protective conditions, reducing the oxidation of the magnesium liquid.

[0024] See Figure 2 The liquid level probe and its lifting assembly (22) are designed with at least one liquid level probe. The liquid level probe is located above the mold cavity and is fixed on the mounting frame by a support frame to detect the liquid level of magnesium liquid in the mold cavity. When the magnesium liquid in the mold cavity reaches the set position, a signal will be generated, the lifting platform will descend, and the movable plug (26) in the casting system (25) will seal the liquid outlet and stop the liquid discharge.

[0025] See Figure 1-2Preferably, the casting system (25) connected to the liquid supply system is placed at the geometric center of gravity of the ingot casting machine during casting so that it can press the mold cavity end cap with its own assembly force.

[0026] join Figure 3 Preferably, any chain tooth on the sprocket has the same tooth shape as the roller. The meshing transmission between the wheel teeth and the roller enables the transmission chain of the fixed ingot mold between the rollers to be synchronously connected. The blowing pipe (27) at the mold exit end is a series of multiple air pipes arranged along the mold exit end and fixed on the mounting frame. It is connected to an external air supply device. Multiple air outlets blow air toward the bottom and all sides of the ingot mold to accelerate the cooling of the ingot and demold it under the action of gravity at the mold reversal point.

[0027] The PLC controller establishes electrical and communication connections with the limit mechanism, the various lifting components, the displacement sensor and temperature sensor on the transmission track to send and receive position signals, temperature signals and liquid level signals, so as to control the ingot casting machine to complete the cycle of walking and casting according to the set program.

[0028] The following is based on Figures 1-3 To further illustrate a self-protected continuous casting machine: During operation, when the ingot mold moves to the casting position, the mold cover and its lifting assembly (20) descend to cover and seal the ingot mold (12). The protective air path opens, and the protective gas passes through the left and right vent pipes (21) and the vent holes of the cover to exhaust and protect the mold cavity of the ingot mold (12). At the same time, the liquid level probe and its lifting assembly (22) descend, and the moving lifting platform drives the entire ingot machine to rise. The ingot mold pushes open the movable plug (26) of the casting system (25), and the alloy liquid enters the mold cavity and directly reaches the liquid level probe. When the liquid level is detected, a signal is sent, the protective gas path is closed, the ingot mold cover plate and its lifting component one (20) rise, causing the cover to move upward and detach from the ingot mold. At the same time, the liquid level probe and its lifting component two (22) rise, the moving lifting platform causes the entire ingot casting machine to descend and detach from the casting system (25), the movable plug (26) closes the spout, the transmission track causes the "full" ingot mold to move to the mold exit end, where it is condensed by gas and moved horizontally until the ingot at the mold exit end. Under the action of gas blowing force and gravity, the ingot falls through the material support plate (24), and the "empty" ingot mold moves into the ingot position to repeat the ingot casting cycle.

[0029] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A self-protected continuous casting machine, characterized in that, The device comprises a mobile lifting platform and its limiting mechanism, a three-layer mounting frame, a chain-type ingot transfer track, an ingot mold cover plate protection mechanism, a cooling blowing air path, and a PLC controller. The mobile lifting platform consists of a base (1), X-axis and Z-axis drive components (2, 3), two pairs of connecting rods (6) connected by a rotating joint (4), a lower support plate (5), and an upper support plate (7). The three-layer mounting frame (8) is fixed to the upper support plate (7). The three-layer mounting frame (8) is moved and lifted as a whole under the drive of the X-axis and Z-axis drive components (2, 3). Its limiting mechanism includes an upper contact switch (19), a lower contact switch (17), and a contact connecting rod (18) which are slidably fixed at the middle position of the outer side of the mobile platform. The upper contact switch (19) and the lower contact switch (17) are electrically connected to the PLC controller.

2. The self-protected continuous casting machine according to claim 1, characterized in that, The chain-type ingot transfer track is installed on the upper double-layer frame of the three-layer mounting frame (8). The chain-type ingot transfer track includes two pairs of parallel sprockets (9), two annular closed chain tracks (11), several ingot molds (12), several rollers (13), sprocket shafts and their support components (15), track power source (14), and heating cover (16). The two pairs of sprockets are respectively set at the mold entry end and the mold exit end of the transfer track. The ingot molds (12) are evenly distributed on the support between the two rollers (13). The rollers (13) mesh with the chain teeth at the sprockets (9) and roll on the upper and lower roller plates (23), driving the ingot molds to move. The heating cover (16) is installed above the mold entry end of the transfer track to heat the ingot molds as needed.

3. The self-protected continuous casting machine according to claim 1, characterized in that, The ingot mold cover plate protection mechanism includes an ingot mold cover plate and its lifting component one (20), left and right vent pipes (21) and air passage components, liquid level probe and its lifting component two (22). All the above components are fixed by a support frame designed on the outside of the mounting frame (8). The ingot mold cover plate has several vent holes. The components of the ingot mold cover plate protection mechanism work together to seal, ventilate and exhaust the ingot mold cavity and detect the liquid level during casting.

4. The self-protected continuous casting machine according to claim 1, characterized in that, The blowing pipe (27) of the cooling blowing air path consists of multiple air pipes arranged along the mold exit end and fixed on the mounting frame. It is connected to an external air supply device. Multiple air outlets blow air towards the bottom and all sides of the casting mold to accelerate the cooling of the casting and demold under the action of gravity at the mold reversal point.

5. A self-protected continuous casting machine according to claim 1, characterized in that, The PLC controller establishes electrical and communication connections with the mobile lifting platform and its limiting mechanism, the ingot mold cover plate protection mechanism, the cooling blowing air path, and the displacement and temperature sensors on the chain casting ingot conveying track to send and receive position signals, temperature signals, and liquid level signals, so as to control the ingot casting machine to complete the walking and casting cycle according to the set program.

Images