Casting blank electric control flame automatic cleaning device

Abstract

The invention discloses a casting blank electric control flame automatic cleaning device which comprises a transverse moving frame, the two ends of the transverse moving frame are arranged on two parallel transverse moving rails in a rolling mode respectively, and a plurality of cleaning stations used for containing casting blanks are arranged between the two transverse moving rails; a longitudinal moving rail is arranged on the transverse moving frame, and the longitudinal moving frame is arranged on the longitudinal moving rail in a rolling mode; the burner is movably arranged at the bottom of the longitudinal moving frame through a lifting mechanism and is used for spraying fuel gas and oxygen in stages and generating flames for cleaning defects on the surface of the casting blank; the dust removal unit is used for treating smoke dust generated in the casting blank surface defect cleaning process; the PLC control system is electrically connected with the transverse moving frame, the longitudinal moving frame, the burner, the lifting mechanism and the dust removal unit; according to the scheme, whole-course automatic operation from casting blank positioning, burner lifting, medium supply to cleaning process control is achieved, the labor condition is fundamentally improved, and the labor cost is saved.

Description

Technical Field

[0001] This invention relates to the field of steel production equipment technology, specifically to an electronically controlled flame automatic cleaning device for cast billets. Background Technology

[0002] In the steel production process, surface defects in cast billets can severely affect the rolling quality of steel products. Flame cleaning of cast billets, as a key process for improving steel quality, removes surface defects through the cutting and melting action of high-temperature flames. Currently, flame cleaning of steel billets in China mainly relies on manual operations, especially in the cleaning of cold steel billets, where the following problems are commonly observed: 1. High labor intensity and harsh environment: Workers need to work in high temperature, high dust and strong noise environment, and long-term exposure can easily cause occupational diseases; 2. Low cleaning efficiency: Manual cleaning is slow and difficult to adapt to the needs of continuous and large-scale production; 3. Unstable cleaning quality: It is greatly affected by the operator's skills and experience, and problems such as uneven cleaning, over-cleaning, or incomplete cleaning are prone to occur; 4. Low level of equipment automation: China is relatively weak in the research and development and manufacturing of dedicated flame cleaning machines, and lacks efficient and reliable automated cleaning equipment.

[0003] Especially for high-end steel grades such as automotive panel steel and high-strength steel, the requirements for the surface quality of the cast billets are extremely high, and existing manual cleaning methods can no longer meet the requirements of high-quality and high-efficiency production. Therefore, developing an automated, high-efficiency, and high-precision flame cleaning device for cast billets has become an urgent need for steel companies to improve product quality, reduce production costs, and improve the working environment. Summary of the Invention

[0004] To address the aforementioned shortcomings of existing technologies, this invention provides an automated billet cleaning device with high automation, high cleaning efficiency, and stable quality, using an electrically controlled flame.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: An automatic flame cleaning device for cast billets is provided, comprising: a transverse carriage, both ends of which are rotatably mounted on two parallel transverse tracks, with several cleaning stations for placing cast billets arranged between the two transverse tracks; a longitudinal carriage, on which longitudinal tracks are mounted and rotatably mounted; a burner, movably mounted at the bottom of the longitudinal carriage via a lifting mechanism, for injecting gas and oxygen in stages to generate a flame for cleaning surface defects of the cast billets; a dust removal unit for treating the smoke and dust generated during the cleaning process of surface defects of the cast billets; and a PLC control system electrically connected to the transverse carriage, the longitudinal carriage, the burner, the lifting mechanism, and the dust removal unit.

[0006] Furthermore, the two ends of the transverse frame are respectively connected to two synchronously running drive motors via roller chains.

[0007] Furthermore, a chain tensioning mechanism is provided at one end of the roller chain. The chain tensioning mechanism includes a guide frame and a tensioning sprocket slidably mounted on the guide frame. One end of the roller chain is driven by the tensioning sprocket. The sliding direction of the tensioning sprocket is parallel to the transverse track. The tensioning sprocket is fixedly connected to an adjusting screw, which is fixed to the guide frame by bolts.

[0008] Furthermore, the lifting mechanism includes two H-shaped slides, and several rollers that cooperate with the H-shaped slides are provided on both sides of the burner. The top of the burner is fixedly connected to one end of two lifting chains on both sides. The other ends of the two lifting chains are respectively set on two lifting sprockets. Both lifting sprockets are set on the drive shaft, and the drive shaft is connected to the lifting motor.

[0009] Furthermore, the burner is provided with inlet and outlet water channels for cooling the burner, a cleaning oxygen channel for supplying combustion oxygen, a gas channel for supplying combustible gas, and a preheating oxygen channel for supplying preheated oxygen.

[0010] Furthermore, the inlet and outlet water channels, the cleaning oxygen channel, the gas channel, and the preheating oxygen channel are connected to the external cooling water supply equipment, oxygen supply equipment, gas supply equipment, and preheating oxygen supply equipment respectively through corresponding medium pipelines. All medium pipelines are stainless steel flexible metal hoses.

[0011] Furthermore, the dust removal unit includes a dust removal hood installed on the top of the transverse frame. The dust removal hood includes a suction pipe and several conical suction ports arranged sequentially at the bottom of the suction pipe and connected thereto. The suction pipe is connected to the main dust removal pipe through a telescopic sealing pipe.

[0012] Furthermore, the telescopic sealing pipe includes several sleeves nested in sequence, with adjacent sleeves slidingly fitted together and a sealing ring for sliding sealing provided on the sleeve.

[0013] Furthermore, the cleaning station is equipped with several positioning blocks for positioning the casting billet.

[0014] Furthermore, the PLC control system also includes a photoelectric sensor that works with the positioning block to position the burner.

[0015] The beneficial effects of this invention are as follows: 1. This solution sets up multiple independent cleaning stations between two transverse tracks, supporting staggered and continuous operation of the billet, enabling seamless connection of the cleaning process and significantly shortening the production cycle. The transverse carriage enables rapid transfer between cleaning stations, and through the cooperation of positioning blocks and photoelectric sensors, it can achieve precise positioning of the billet, thereby effectively reducing auxiliary operation time and significantly improving overall cleaning efficiency compared to traditional manual operation. At the same time, the cooperation between the burner and the lifting mechanism ensures the cleaning quality of billets of different thicknesses. In addition, this solution realizes fully automated operation from billet positioning, burner lifting, media supply to cleaning process control, fundamentally improving working conditions and saving labor costs.

[0016] 2. The chain tensioning mechanism in this solution adjusts the position of the tensioning sprocket to compensate for the plastic elongation of the chain after long-term operation, thereby preventing transmission slippage or misalignment.

[0017] 3. The inlet and outlet water channels on the burner in this design are used to introduce cooling water to cool the burner and effectively prevent high temperature damage to the burner; while the preheating oxygen channel can deliver a small flow of preheating oxygen to facilitate the preheating of the billet in the early stage. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The above and other objects, features, and advantages of the present invention will become clearer through the accompanying drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not intentionally drawn to scale to actual dimensions; the focus is on illustrating the main points of the invention.

[0019] Figure 1 This is a top view of the electronically controlled flame automatic cleaning device for cast billets.

[0020] Figure 2 This is a side view of the electronically controlled flame automatic cleaning device for cast billets.

[0021] Figure 3 for Figure 1 A magnified view of a section of the lifting mechanism.

[0022] Figure 4 for Figure 2 A magnified view of the longitudinal shift frame.

[0023] Figure 5 This is a magnified view of a portion of the chain tensioning mechanism.

[0024] Among them, 1. transverse frame, 2. transverse track, 3. longitudinal frame, 4. longitudinal track, 5. burner, 6. roller chain, 7. drive motor, 8. guide frame, 9. tension sprocket, 10. adjusting screw, 11. bolt, 12. H-shaped slide, 13. lifting chain, 14. lifting sprocket, 15. drive shaft, 16. lifting motor, 17. dust hood, 18. dust suction pipe, 19. sleeve, 20. positioning block, 21. casting billet, 22. chain tensioning mechanism. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0029] like Figures 1 to 5 As shown, the billet electro-controlled flame automatic cleaning device of this scheme includes a transverse moving frame 1, a longitudinal moving frame 3, a burner 5, a dust removal unit and a PLC control system.

[0030] The two ends of the transverse frame 1 are respectively rolled on two parallel transverse tracks 2. Several cleaning stations for placing the billet 21 are set between the two transverse tracks 2. In specific implementation, the transverse frame 1 adopts a frame steel structure with a length of 14 meters and a width of 2 meters. The transverse track 2 is 16 meters long and is evenly divided into 3 independent cleaning stations (station spacing of 5.3 meters) along the length direction. A 1.2-meter-wide safety passage is provided between the cleaning stations. The two ends of the transverse frame 1 are respectively connected to two synchronously running drive motors 7 through roller chains 6. The output shaft of the motor is connected to a reducer through a coupling. A 23-tooth sprocket is installed at the output end of the reducer. The sprocket drives the traveling wheels of the transverse frame 1 through the roller chains 6. A longitudinal track 4 is set on the transverse frame 1. The longitudinal frame 3 is rolled on the longitudinal track 4 through two sets of wheels. The center distance of the longitudinal track 4 is 3.5 meters, and the platform height of the longitudinal frame 3 is 1.6 meters.

[0031] The burner 5 is movably mounted at the bottom of the longitudinal transfer frame 3 via a lifting mechanism. It is used to inject gas and oxygen in stages and generate a flame to clean the surface defects of the casting 21. Specifically, the burner 5 is equipped with inlet and outlet water channels for cooling the burner 5, a cleaning oxygen channel for supplying combustion oxygen, a gas channel for supplying combustible gas, and a preheating oxygen channel for supplying preheated oxygen. The preheated oxygen can preheat the casting 21 in the early stage. The inlet and outlet water channels, cleaning oxygen channel, gas channel, and preheating oxygen channel are connected to the external cooling water supply equipment, oxygen supply equipment, gas supply equipment, and preheating oxygen supply equipment respectively through corresponding medium pipelines. All medium pipelines are stainless steel flexible metal hoses. The bottom of the burner 5 is initially 0.6 meters above the ground. The stainless steel flexible metal hose, fixed by pipe clamps, is lowered vertically to the platform of the longitudinal transfer frame 3 and connected to the corresponding medium interface on the burner 5 through a flange.

[0032] The dust removal unit is used to handle the dust generated during the cleaning of surface defects of the casting billet 21. The dust removal unit includes a dust removal hood 17 installed on the top of the transverse frame 1. The dust removal hood 17 includes a suction pipe 18 and several conical suction ports arranged sequentially at the bottom of the suction pipe 18 and connected to it. The suction pipe 18 is connected to the main dust removal pipe through a telescopic sealing pipe. The telescopic sealing pipe includes several sleeves 19 arranged in sequence. Adjacent sleeves 19 slide against each other and are provided with sealing rings for sliding sealing. The dust removal hood 17 of this solution can collect the dust generated during the cleaning process while moving with the transverse frame 1, so as to improve the workshop environment.

[0033] The PLC control system is electrically connected to the transverse frame 1, longitudinal frame 3, burner 5, lifting mechanism, and dust removal unit. Several positioning blocks 20 for positioning the billet 21 are set on the cleaning station. The PLC control system also includes photoelectric sensors that cooperate with the positioning blocks 20 to position the burner 5. In specific implementation, the PLC control system is connected to three frequency converters via hard wiring. The transverse frame 1, longitudinal frame 3, and lifting mechanism each correspond to one frequency converter. The digital input module collects 32×2 limit switch signals and buttons (limit switches at both ends of the transverse frame 1, front and rear limit switches of the longitudinal frame 3, start and stop buttons, etc.). The analog input module receives eight current signals. The actuator includes five sets of solenoid valves for controlling the on / off of cooling water, oxygen, gas, and preheated oxygen, three frequency converter motors, and a dust removal unit start / stop device.

[0034] As an optional implementation, one end of the roller chain 6 is provided with a chain tensioning mechanism 22. The chain tensioning mechanism 22 includes a guide frame 8 and a tensioning sprocket 9 slidably disposed on the guide frame 8. One end of the roller chain 6 is driven by the tensioning sprocket 9. The sliding direction of the tensioning sprocket 9 is parallel to the transverse track 2. The tensioning sprocket 9 is fixedly connected to an adjusting screw 10, which is fixed to the guide frame 8 by bolts 11. By adjusting the position of the tensioning sprocket 9, the plastic elongation of the chain after long-term operation is compensated, thereby preventing transmission slippage or skew.

[0035] As an optional implementation, the lifting mechanism includes two H-shaped slides 12. Several rollers that cooperate with the H-shaped slides 12 are provided on both sides of the burner 5. The top two sides of the burner 5 are fixedly connected to one end of two lifting chains 13. The other ends of the two lifting chains 13 are respectively provided on two lifting sprockets 14. Both lifting sprockets 14 are provided on the drive shaft 15. The drive shaft 15 is connected to the lifting motor 16. Both the output shaft of the drive shaft 15 and the output shaft of the lifting motor 16 are provided with drive sprockets. The two drive sprockets are connected through the drive sprockets.

[0036] In summary, this solution sets up multiple independent cleaning stations between the two transverse tracks 2, supporting staggered transport and continuous operation of the billet 21, enabling seamless connection of the cleaning process and significantly shortening the production cycle. The transverse carriage 1 enables rapid transfer between cleaning stations, and through the cooperation of the positioning block 20 and photoelectric sensors, it can also achieve precise positioning of the billet 21, thereby effectively reducing auxiliary operation time and significantly improving overall cleaning efficiency compared to traditional manual operation. At the same time, the cooperation of the burner 5 and the lifting mechanism ensures the cleaning quality of billets 21 of different thicknesses. In addition, this solution realizes fully automated operation from billet 21 positioning, burner 5 lifting, media supply to cleaning process control, fundamentally improving working conditions and saving labor costs.

[0037] Although the specific embodiments of the invention have been described in detail with reference to the accompanying drawings, this should not be construed as limiting the scope of protection of this patent; various modifications and variations that can be made by a person skilled in the art without inventive effort within the scope described in the claims are still within the scope of protection of this patent.

Claims

1. An automatic flame cleaning device for cast billets, characterized in that, include: A transverse carriage, the two ends of which are respectively rolled on two parallel transverse tracks, and a number of cleaning stations for placing casting billets are provided between the two transverse tracks; A longitudinal transfer frame, wherein a longitudinal transfer track is provided on the transverse transfer frame, and the longitudinal transfer frame is rotatably mounted on the longitudinal transfer track; The burner, which is movably mounted at the bottom of the longitudinal frame via a lifting mechanism, is used to inject gas and oxygen in stages and generate a flame to clean the surface defects of the billet. The dust removal unit is used to handle the fumes and dust generated during the cleaning of defects on the surface of the cast billet; The PLC control system is electrically connected to the transverse and longitudinal carriages, burners, lifting mechanism, and dust removal unit.

2. The billet electro-controlled flame automatic cleaning device according to claim 1, characterized in that, The two ends of the transverse frame are respectively connected to two synchronously running drive motors via roller chains.

3. The billet electro-controlled flame automatic cleaning device according to claim 2, characterized in that, One end of the roller chain is provided with a chain tensioning mechanism, which includes a guide frame and a tensioning sprocket slidably mounted on the guide frame. One end of the roller chain is driven by the tensioning sprocket. The sliding direction of the tensioning sprocket is parallel to the transverse track. The tensioning sprocket is fixedly connected to an adjusting screw, which is fixed to the guide frame by bolts.

4. The billet electro-controlled flame automatic cleaning device according to claim 1, characterized in that, The lifting mechanism includes two H-shaped slides. Several rollers that cooperate with the H-shaped slides are provided on both sides of the burner. The top of the burner is fixedly connected to one end of two lifting chains on both sides. The other ends of the two lifting chains are respectively set on two lifting sprockets. Both lifting sprockets are set on a drive shaft, and the drive shaft is connected to the lifting motor.

5. The billet electro-controlled flame automatic cleaning device according to claim 4, characterized in that, The burner is provided with an inlet and outlet water channel for cooling the burner, a cleaning oxygen channel for supplying combustion oxygen, a gas channel for supplying combustible gas, and a preheating oxygen channel for supplying preheated oxygen.

6. The billet electro-controlled flame automatic cleaning device according to claim 5, characterized in that, The inlet and outlet water channels, the cleaning oxygen channel, the gas channel, and the preheating oxygen channel are connected to the external cooling water supply equipment, oxygen supply equipment, gas supply equipment, and preheating oxygen supply equipment respectively through corresponding medium pipelines. All medium pipelines are stainless steel flexible metal hoses.

7. The billet electro-controlled flame automatic cleaning device according to claim 1, characterized in that, The dust removal unit includes a dust removal hood installed on the top of the transverse frame. The dust removal hood includes a suction pipe and a number of conical suction ports arranged sequentially at the bottom of the suction pipe and connected thereto. The suction pipe is connected to the main dust removal pipe through a telescopic sealing pipe.

8. The billet electro-controlled flame automatic cleaning device according to claim 1, characterized in that, The telescopic sealing pipe includes several sleeves nested in sequence, with adjacent sleeves slidingly fitted together and a sealing ring for sliding sealing provided on the sleeve.

9. The billet electro-controlled flame automatic cleaning device according to claim 1, characterized in that, The cleaning station is equipped with several positioning blocks for positioning the casting billet.

10. The billet electro-controlled flame automatic cleaning device according to claim 9, characterized in that, The PLC control system also includes a photoelectric sensor that works with the positioning block to position the burner.

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