Automatic lifting device for uniform baking of mold

Abstract

The invention relates to the technical field of mold pre-machining, and discloses a mold uniform baking automatic lifting device which comprises a baking frame body used for placing a steel ingot mold and forming a baking cavity on a fireproof cover, and a plurality of baking units arranged in the baking frame body in a bilateral symmetry mode. The distance between the multiple baking units and the moving speed on the steel ingot mold are controlled through limiting pieces, a flue gas pipeline is arranged in the baking frame body and used for discharging flue gas, a pipeline which penetrates through the baking frame body and provides fuel gas for the baking frame body is connected to the baking units, and each baking unit comprises a sliding rail installed in the baking frame. The baking units are independently controlled, the lengths of the sliding rails are kept consistent, the sum of the lengths of the sliding rails is equal to the width of the baking cavity, the bearing base frame is arranged on the sliding rails to build a motion foundation for movable heat supply of the ingot mold, and a plurality of gas burners are installed on the bearing base frame. The bearing base frame forms a double-face wrapping type heating environment for the steel ingot mold.

Description

Technical Field

[0001] The invention relates to the technical field of mold pre-processing, in particular to an automatic lifting device for uniformly baking a mold. Background Art

[0002] In the process of casting steel ingots, it is a crucial step to evenly bake the mold before use to ensure that the mold can withstand the impact of high-temperature molten steel without damage and at the same time ensure the quality of the casting. In the current baking process, uneven baking often occurs, resulting in inconsistent mold temperature, which leads to the mold temperature not meeting the process requirements when pouring, resulting in poor quality of the steel ingot. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides an automatic lifting device for uniformly baking a mold, which solves the problem that the mold temperature is not uniform, resulting in the mold temperature failing to meet the process requirements and causing the quality of the steel ingot to deteriorate.

[0004] To achieve the above object, the present invention provides the following technical solutions: an automatic lifting device for uniform baking of molds, comprising: a baking frame for placing a steel ingot mold and forming a baking chamber with a fireproof cover, a plurality of baking units are symmetrically arranged in the baking frame, the spacing between the plurality of baking units and the moving speed on the steel ingot mold are controlled by a limiter, a smoke duct is arranged in the baking frame for exhausting smoke, and the baking unit is connected to a pipeline that runs through the baking frame and supplies gas to the baking unit;

[0005] The baking unit includes a sliding track installed inside the baking frame. Several baking units are independently controlled and the lengths of the sliding tracks are consistent. The sum of the lengths of the sliding tracks is equal to the width of the baking chamber. By arranging a supporting base on the sliding track, a motion basis for mobile heating of the ingot mold is established. Several gas burners are installed on the supporting base, and the supporting base forms a double-sided wrapped heating environment for the ingot mold.

[0006] In a specific embodiment, the limit member is arranged between adjacent baking units, and includes a driving bin installed on the inner wall of the baking frame and a docking sleeve extending from both sides of the driving bin. A push rod is installed passing through the docking sleeve. The push rod is arranged in a bent shape, and one end thereof away from the docking sleeve extends toward the direction of the bearing base and fits against the side wall of the bearing base. A control member for limiting the extension length of the push rod in the docking sleeve is installed between the two push rods. The extension length of the push rod in the docking sleeve limits the spacing between adjacent baking units.

[0007] In a specific embodiment, the supporting base frame includes a main body connected to the sliding track and an extension end mounted on the main body and extending toward the center line direction of the steel ingot mold, the extension end is inclined relative to the steel ingot mold, and the gas burner is mounted on the inclined surface of the extension end;

[0008] The height of the structure extending from the center of the steel ingot mold to the main body of the extending end gradually decreases, and the extending end is symmetrical up and down with the main body axis as the symmetry center line.

[0009] In a specific embodiment, the length of the extension ends of the two left-right symmetrical supporting base frames is equal to the structural width of the steel ingot mold, and the gas burners on the extension ends cover the width of the steel ingot mold and cover its structural area during its movement.

[0010] In a specific embodiment, lifting arms are installed at both ends of the steel ingot mold, and a lifting member for driving the steel ingot mold to be lifted up and out of the baking chamber is installed at the cut-off end of the lifting arm.

[0011] In a specific embodiment, the lifting member includes a lifting block installed at the lower end of the lifting arm, and a chain and a limit column passing through the lifting block for controlling its linear rise are arranged on the lifting block, and the limit column is perpendicular to the top plate and the bottom plate of the baking frame, and two sprockets are arranged on the top of the baking frame. The chain changes its length in the baking chamber under the action of the sprocket, and a counterweight block is arranged on the other end of the chain that is separated from the baking chamber, and the counterweight block slides on the side wall of the baking frame.

[0012] In a specific embodiment, the control member includes a driving rod installed in a driving bin and extending outward, and a connecting shaft connected to the bending part of the ejection rod is provided at the cut-off end of the driving rod. The two connecting shafts are arranged up and down and connected to the driving rod through an indirect rod.

[0013] Compared with the prior art, the present invention provides an automatic lifting device for uniform baking of molds, which has the following beneficial effects:

[0014] In the technical scheme disclosed in the present invention, based on the problem that the temperature of the mold itself is different, which leads to the mold temperature failing to meet the process requirements and the quality of the steel ingot deteriorates, this scheme proposes the primary premise of placing the mold in the baking chamber. First, the temperature in the baking chamber is controlled to reach a constant temperature. Then, after the mold is placed therein, it is determined that after the mold reaches a certain temperature, there will be no heat exchange with the air in the baking chamber that produces a large temperature difference, thereby ensuring balanced heat dissipation in all parts. On this basis, the setting of the baking unit can also produce a heating effect for the steel ingot mold, and produce heating of varying heights according to its own structural setting, thereby enhancing the overall heating effect of the steel ingot mold.

[0015] In the explanation of this scheme, based on the problem of uniform baking, it is proposed to set the installation surface of the gas burner at the extended end included in the baking unit to be inclined. The shape is set based on the fact that the baking unit is movable as a whole. At the edge of the mold, the temperature diffusion rate at the edge will increase due to the movement of the baking unit. Therefore, the setting height of the gas burner close to the edge of the mold is lower than the installation height of the other gas burners, which can compensate for the temperature loss after temperature diffusion.

[0016] Based on the setting of the baking chamber, when the ingot mold is pre-baked before pouring, it is placed in the baking chamber for treatment to reduce its contact with the outside world and isolate it from dangerous conditions that may occur to the operator during the baking process. On the other hand, after the baking chamber completes baking, the lifting piece is used to lift the entire ingot mold upward to facilitate the pouring operation after baking.

[0017] This solves the problem that the mold temperature is inconsistent, which causes the mold temperature to fail to meet the process requirements and causes the quality of the steel ingot to deteriorate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of an automatic lifting device for uniformly baking a mold according to the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of a baking frame of an automatic lifting device for uniform baking of a mold according to the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of a baking unit and a limiting member of an automatic lifting device for uniform baking of a mold according to the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of a limiting member of an automatic lifting device for uniform baking of a mold according to the present invention;

[0022] Figure 5 for Figure 4 Schematic diagram of the structure at A in the middle;

[0023] Figure 6 It is a schematic diagram of the connection between a bearing base frame and a first end rod of an automatic lifting device for uniform baking of a mold according to the present invention.

[0024] In the figure: 1. baking frame; 2. baking unit; 21. bearing base; 211. main body; 212. extension end; 22. gas burner; 3. limiter; 31. driving bin; 32. docking sleeve; 33. ejector rod; 331. first end rod; 332. second end rod; 333. turning section; 34. control member; 341. driving rod; 342. connecting shaft; 343. indirect rod; 4. flue gas duct; 5. pipeline; 6. lifting arm; 7. lifting member; 71. lifting block; 72. limiter column; 73. sprocket; 74. counterweight. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figure 1-Figure 6 The technical solution described in this scheme is based on the existing problems in reality. Specifically, in the process of casting steel ingots, it is a crucial step to evenly bake the mold before use to ensure that the mold can withstand the impact of high-temperature molten steel without being damaged, and at the same time ensure the quality of the casting. In the current baking, uneven baking often occurs, and the mold temperature is not uniform, resulting in the mold temperature not meeting the process requirements when pouring, which makes the quality of the steel ingot deteriorate. In order to improve the service life of the mold and the casting output quality of the steel ingot, this scheme specifically proposes an automatic lifting device for uniform baking of the mold. The first prerequisite for placing the mold in the baking chamber is to first control the temperature in the baking chamber to reach a constant temperature. Then, after the mold is placed in it, it is determined that after the mold reaches a certain temperature, there will be no heat exchange with the air in the baking chamber that has a large temperature difference, ensuring balanced heat dissipation of each part. On this basis, the setting of the baking unit 2 can also produce a heating effect for the steel ingot mold, and produce different heights of heating according to its own structural setting, thereby enhancing the heating effect of the steel ingot mold as a whole.

[0027] The present invention proposes an automatic lifting device for uniformly baking a mold, which specifically includes a baking frame 1 for placing a steel ingot mold and forming a baking chamber on a fireproof cover. A plurality of baking units 2 are symmetrically arranged in the baking frame 1. The baking unit 2 is arranged in the baking chamber to bake the steel ingot mold entering the baking unit 2. The spacing between the plurality of baking units 2 and the moving speed on the steel ingot mold are controlled by a limiter 3. The limiter 3 is arranged between adjacent baking units 2, and uses its own structure to open or close to control the spacing between adjacent baking units 2, and uses the speed of its opening or closing to control the speed of the baking units 2 approaching or moving away from each other. A smoke duct 4 extending into the baking chamber is installed on the baking frame 1 for smoke exhaust, and a pipeline 5 is connected to the baking unit 2, which runs through the baking frame 1 and provides gas thereto. The gas is connected to the baking unit 2 through a pipeline arranged outside, so as to cause it to enter the baking unit 2.

[0028] In order to increase the heating controllability of the ingot mold in the baking chamber, based on this purpose, a plurality of baking units 2 are installed in the baking chamber, which include sliding tracks installed inside the baking frame. The plurality of baking units 2 are independently controlled and the lengths of the sliding tracks are kept consistent. The sum of the lengths of the plurality of sliding tracks is equal to the width of the baking chamber. In this specific embodiment, two baking units 2 are set as an example, which are symmetrical left and right and front and back. The bearing base 21 is set on the sliding track and slides in the baking chamber, thereby generating overall baking of the ingot mold. The setting of the sliding track is used to establish a movement basis for mobile heating of the ingot mold. The bearing base 21 includes a main body 211 connected to the sliding track and an extension end 212 installed on the main body 211 and extending in the center line direction of the ingot mold. The extension end 212 is installed on the ingot mold in a symmetrical shape up and down to form a double-sided wrapping of the ingot mold. The length of the extension end 212 on the two symmetrical bearing bases 21 is equal to the structural width of the ingot mold. The gas burner 22 on the extension end 212 covers the width of the ingot mold and covers its structural area during its movement. The extension end 212 is inclined relative to the ingot mold, and the gas burner 22 is installed on the inclined surface of the extension end 212, and the closer to the edge of the ingot mold, the lower the inclined height. The benefit of the setting here is that, considering that the bearing base 21 will move along the sliding rail under the action of the limiter 3, the temperature diffusion rate at the edge of the mold will increase due to the movement of the baking unit 2. Therefore, the setting height of the gas burner 22 near the edge of the mold is lower than the installation height of the other gas burners 22, which can compensate for the temperature loss after temperature diffusion. In this way, the uniform heating of the ingot mold in the heating environment in the baking chamber is increased.

[0029] In order to control the speed at which adjacent baking units 2 move relative to each other, in this embodiment, a limiter 3 is used for control. The limiter 3 is arranged between adjacent baking units 2, and includes a driving bin 31 installed on the inner wall of the baking frame and a docking sleeve 32 extending from both sides of the driving bin 31. A push rod 33 is installed through the docking sleeve 32. The push rod 33 is arranged in a bent shape, and one end of the push rod 33 away from the docking sleeve 32 extends toward the bearing base 21 and fits against the side wall of the bearing base 21. The push rod 33 includes a first end rod 331 and a second end rod 332 connected to the bearing base. The rod body of the first end rod 331 is connected to the A telescopic rod is connected to compensate for the retraction length. The first end of the first end rod 331 is a right-angled folded plate and is installed at one end of the supporting base that is in contact with the first end of the second end rod 332. The first end of the first end rod 331 is connected to the second end of the second end rod 332 to form a turning section 333. The second end of the first end rod 331 and the second end of the second end rod 332 are clamped at an angle. A control part 34 for limiting the extension length of the ejector rod 33 in the docking sleeve 32 is installed between the two ejector rods 33. The extension length of the ejector rod 33 in the docking sleeve 32 limits the spacing between adjacent baking units 2. A receiving groove for accommodating the built-in structure is provided at the junction of the bearing base 21 and the first end of the first end plate, and the first end of the receiving groove is rigidly connected to the bearing base 21, so as to drive the bearing base 21 to move. The control member 34 includes a driving rod 341 installed in the driving bin 31 and extending outward. The driving rod 341 is driven by the cylinder installed in the driving bin 31 to produce two motion states of extension or retraction. The cut-off end of the driving rod 341 is provided with a connecting shaft 342 connected to the turning section 333. The two connecting shafts 342 are arranged up and down and are connected to the driving rod 341 through an indirect rod 343. The cylinder extends The long driving rod 341 first pushes the turning section 333 through the connecting shaft 342, causing the second end rod 332 to retract in the docking sleeve 32, prompting the second end rod 332 to move to the left, and the telescopic rod installed on the first end rod 331 retracts, while the front and rear symmetrical ejector rods 33 move closer to each other, driving the two bearing base frames 21 closer. In another case, the cylinder retracts, the connecting shaft 342 pulls the turning section 333 to move to the right end, and the telescopic rod extends to compensate for the retracted length. However, at this time, the distance between the two front and rear ejector rods 33 is still pulled apart, resulting in a state where the adjacent bearing bases are far away.

[0030] In order to lift the steel ingot mould out of the baking chamber after the steel ingot mould stays in the baking chamber for a preset time, lifting arms 6 are installed at both ends of the steel ingot mould, and a lifting member 7 is installed at the end of the lifting arm 6 for driving the steel ingot mould to lift its height out of the baking chamber. The lifting member 7 includes a lifting block 71 installed at the lower end of the lifting arm 6, and a chain and a limiting column 72 passing through the lifting block 71 for controlling its linear rise are arranged on the lifting block 71, and the limiting column 72 is perpendicular to the top plate and the bottom plate of the baking frame, and two sprockets 73 are arranged on the top of the baking frame. The chain changes its length in the baking chamber under the action of the sprocket 73, and a counterweight block 74 is arranged on the other end of the chain that is separated from the baking chamber. The counterweight block 74 slides on the side wall of the baking frame, which is easy to produce when the ingot mold is pre-baked before pouring, and is placed in the baking chamber for processing, reducing its contact with the outside world and isolating it from possible dangerous conditions to the operator during the baking process. On the other hand, after the baking chamber is completed, the lifting member 7 is used to lift the ingot mold upward as a whole, which is convenient for the beneficial effect of the pouring operation after the baking is completed.

[0031] The control method of the electrical components appearing in this article is to automatically control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic lifting device for uniform baking of molds, characterized in that: include: A baking frame (1) is provided for placing a steel ingot mold and forming a baking chamber with a fireproof cover. A plurality of baking units (2) are symmetrically arranged in the baking frame (1). The spacing between the plurality of baking units (2) and the moving speed on the steel ingot mold are controlled by a limiter (3). A smoke duct (4) is arranged in the baking frame (1) for exhausting smoke. The baking units (2) are connected to a pipeline (5) that runs through the baking frame (1) and supplies fuel gas thereto. The baking unit (2) comprises a sliding track installed inside a baking frame, a plurality of baking units (2) are independently controlled and the length of the sliding track is kept consistent, the sum of the lengths of the plurality of sliding tracks is equal to the width of the baking chamber, a movement basis for mobile heating of the steel ingot mold is established by arranging a bearing base (21) on the sliding track, a plurality of gas burners (22) are installed on the bearing base (21), and the bearing base (21) forms a double-sided wrapped heating environment for the steel ingot mold.

2. The automatic lifting device for uniform baking of molds according to claim 1, characterized in that: The limiting member (3) is arranged between adjacent baking units (2), and comprises a driving chamber (31) installed on the inner wall of the baking frame and a docking sleeve (32) extending from both sides of the driving chamber (31); a push rod (33) is installed passing through the docking sleeve (32); the push rod (33) is arranged in a bent shape, and one end of the push rod (33) away from the docking sleeve (32) extends toward the bearing base frame (21) and fits with the side wall of the bearing base frame (21); a control member (34) for limiting the extension length of the push rod (33) in the docking sleeve (32) is installed between the two push rods (33); the extension length of the push rod (33) in the docking sleeve (32) limits the spacing between adjacent baking units (2).

3. The automatic lifting device for uniform baking of molds according to claim 2, characterized in that: The bearing base frame (21) comprises a main body (211) connected to the sliding track and an extension end (212) mounted on the main body (211) and extending in the direction of the center line of the steel ingot mold, the extension end (212) is inclined relative to the steel ingot mold, and the gas burner (22) is mounted on the inclined surface of the extension end (212); The height of the structure of the extension end (212) extending from the center of the steel ingot mold toward the main body (211) gradually decreases, and the extension end (212) is symmetrical up and down with the axis of the main body (211) as the symmetry center line.

4. The automatic lifting device for uniform baking of molds according to claim 3, characterized in that: The length of the extension ends (212) on the two left-right symmetrical bearing base frames (21) is equal to the structural width of the steel ingot mold, and the gas burner (22) on the extension ends (212) covers the width of the steel ingot mold and covers its structural area during its movement.

5. The automatic lifting device for uniform baking of molds according to claim 1, characterized in that: Both ends of the steel ingot mould are provided with lifting arms (6), and the end ends of the lifting arms (6) are provided with lifting members (7) for driving the steel ingot mould to be lifted to a higher height so as to separate it from the baking chamber.

6. The automatic lifting device for uniform baking of molds according to claim 5, characterized in that: The lifting member (7) includes a lifting block (71) installed at the lower end of the lifting arm (6), a chain and a limiting column (72) penetrating the lifting block (71) for controlling its linear rise are arranged on the lifting block (71), the limiting column (72) is perpendicular to the top plate and the bottom plate of the baking frame, two sprockets (73) are arranged on the top of the baking frame, and the chain changes its length in the baking chamber under the action of the sprocket (73), and a counterweight block (74) is arranged on the other end of the chain that is separated from the baking chamber, and the counterweight block (74) slides on the side wall of the baking frame.

7. The automatic lifting device for uniform baking of molds according to claim 2, characterized in that: The control member (34) comprises a driving rod (341) installed in the driving bin (31) and extending outwards, a connecting shaft (342) connected to the bending part of the ejection rod (33) is arranged at the cut-off end of the driving rod (341), and two connecting shafts (342) are arranged up and down and connected to the driving rod (341) through an indirect rod (343).

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