A twin-belt aluminum material casting machine and a casting process thereof

Abstract

The application belongs to the technical field of aluminum material casting, and discloses a double-belt type aluminum material casting machine and a casting process thereof, in particular to a double-belt type aluminum material casting machine, which comprises a supporting assembly, a swing part is connected to the supporting assembly, an upper pressure assembly and a lower pressure assembly are respectively connected to the swing part, the upper pressure assembly and the lower pressure assembly correspond to each other, an edge block is connected to the lower pressure assembly, the hydraulic part of the supporting assembly cooperates with the swing part to adjust the distance between the upper pressure assembly and the lower pressure assembly, and a multi-point distributed force monitoring system is constructed by cooperating with the elastic column, the detection block and the pressure sensor of the supporting roller. When the pressure sensor data is stable during normal casting, the pressure value reciprocally fluctuates when the aluminum material surface appears wave defects, the central control unit controls the hydraulic part to release pressure or increase pressure and the elastic column to compensate the elastic force through the pressure position linkage algorithm, so as to reduce the fluctuation amplitude of the top belt, and ensure that the top belt is closely attached to the aluminum material.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of aluminum material casting, and particularly relates to a double-belt type aluminum material casting machine and a casting process thereof. BACKGROUND

[0002] In the field of aluminum material casting, three core technical problems are faced by traditional double-belt type casting machines, which are closely related to the technical background of key parameter control in the casting process, cooling system design and equipment transmission constraint mechanism. On the one hand, the traditional equipment lacks a multi-point distributed pressure monitoring and dynamic adjustment mechanism, and only relies on a fixed structure to maintain the contact pressure of the belt body and the aluminum material. When the aluminum liquid flows unevenly or the belt body slightly deviates, local pressure abnormalities are easily caused, resulting in forming defects such as wave-shaped aluminum materials, and it is difficult to meet the high-precision casting demand.

[0003] A double-belt type casting machine and a continuous slab casting method are disclosed in a patent with the application number CN201210279145.0, which can eliminate the imbalance of slab cooling of a pair of annular belts arranged above and below, comprising: a pair of rotating belt parts with annular belts and arranged above and below; a cavity formed between the pair of rotating belt parts; and a cooling mechanism arranged inside the rotating belt part. The double-belt type casting machine supplies molten metal into the cavity and continuously casts slabs. The double-belt type casting machine is characterized in that a distance adjustment mechanism is arranged inside at least one of the pair of rotating belt parts arranged above and below. The distance adjustment mechanism separates or approaches the annular belt from the slab according to the part of the slab separated from the annular belt. The above-mentioned scheme realizes the scheme of casting aluminum material by using a double-belt type, but it does not explain how to reduce the loss when the aluminum material surface appears abnormal state during casting.

[0004] Aluminum material casting releases a large amount of heat. The traditional open or semi-open cooling structure not only easily causes the cooling liquid to overflow from the edge of the belt body, but also changes the local cooling temperature due to the residual water film not recovered in time. In addition, the cooling liquid lacks a circulation and filtration mechanism, and the accumulation of impurities further reduces the cooling effect, causing uneven cooling and slow forming speed of the aluminum material.

[0005] Therefore, in order to solve the above technical problems, the application provides a double-belt type aluminum material casting machine and a casting process thereof. SUMMARY

[0006] The application aims at the above problems, and provides a double-belt type aluminum material casting machine and a casting process thereof, which have the advantages of balanced cooling and high pressure control precision.

[0007] In order to achieve the above object, the present application provides the following technical scheme: a double-belt type aluminum material casting machine, comprising a support assembly, a swing part connected to the support assembly, an upper pressure assembly and a lower pressure assembly respectively connected to the swing part, and the upper pressure assembly and the lower pressure assembly corresponding to each other, and a side part stopper connected to the lower pressure assembly.

[0008] The upper pressure assembly comprises a connecting block, a tensioning wheel and a fastening wheel respectively rotating at both ends of the connecting block distributed along the length direction, and a top belt connected between the tensioning wheel and the fastening wheel.

[0009] A plurality of support rollers are rotating on the connecting block, and the support rollers are in contact with the top belt, the support rollers comprise a bearing column, a plurality of elastic columns are connected to the outer circumference of the bearing column, a detection block is connected to the end of the elastic column away from the bearing column, and a pressure sensor is arranged on the elastic column.

[0010] Preferably, the lower pressure assembly comprises a bearing block, and the bearing block is provided with a bottom belt.

[0011] Preferably, a plurality of water storage cavities and water return cavities are respectively arranged in the connecting block, and the water storage cavities and the water return cavities are in communication with each other.

[0012] Preferably, a vacuum pump is arranged at one end of the water return cavity close to the top belt, and a working assembly for filtering the recovered water is arranged in the water return cavity.

[0013] Preferably, a rotating roller is rotating at one side of the water storage cavity close to the top belt, and a water scraping assembly is rotating at one side of the water return cavity close to the top belt.

[0014] Preferably, the top belt comprises a steel belt, and a plurality of rib strips for partitioning the steel belt are connected to one end of the steel belt close to the connecting block.

[0015] Preferably, the water scraping assembly comprises a water scraping roller, and a plurality of rubber strips are connected to the outer circumference of the water scraping roller.

[0016] Preferably, the support assembly comprises a support seat, an installation frame connected to the support seat, and two hydraulic parts connected to the installation frame, and the two hydraulic parts are respectively connected to the swing part.

[0017] Preferably, a plurality of temperature and humidity sensors are connected to one end of the connecting block close to the top belt.

[0018] A casting process realized by using the double-belt type aluminum material casting machine, comprising the following steps:

[0019] S1, adjust the hydraulic part on the mounting frame of the support assembly, drive the swing part to match the distance between the upper pressure assembly and the lower pressure assembly with the target thickness of the aluminum material, and adjust the distance between the edge blocks on the lower pressure assembly to adapt to the width of the aluminum material;

[0020] S2, start the tensioning wheel and the fastening wheel at both ends of the connecting block in the upper pressure assembly, drive the top belt to circulate, calibrate the levelness of the top belt through the support roller on the connecting block, adjust the pre-tightening force of the elastic column in the support roller, and make the detection block and the top belt uniformly contact;

[0021] S3, uniformly inject the pre-processed molten aluminum into the casting area between the upper pressure assembly and the lower pressure assembly, and real-time receive the data of the pressure sensor on the elastic column, when the pressure is too high, control the hydraulic part of the corresponding area to release pressure and reduce the elastic force of the elastic column; when the pressure is too low, control the hydraulic part to increase the pressure and increase the elastic force of the elastic column;

[0022] S4, when the temperature is too high, increase the rotating speed of the rotating roller near the top belt side of the water storage cavity, and increase the cooling liquid delivery amount;

[0023] S5, when the temperature is too low, reduce the rotating speed of the rotating roller, reduce the delivery amount; when the humidity is too high, increase the rotating speed of the water scraping roller in the water scraping assembly near the top belt side of the water return cavity and the power of the vacuum pump.

[0024] Compared with the prior art, the beneficial effects of the present application are as follows:

[0025] 1, the hydraulic part and the swing part of the support assembly cooperatively adjust the distance between the upper and lower pressure assemblies, and cooperate with the elastic column, the detection block and the pressure sensor of the support roller to construct a multi-point distributed force monitoring system. When the pressure sensor data is stable during normal casting, the pressure value fluctuates when the aluminum material surface appears wave defects, the central control unit controls the hydraulic part to release pressure or increase pressure and the elastic force of the elastic column through the pressure position linkage algorithm, reduces the fluctuation amplitude of the top belt, ensures the close contact between the top belt and the aluminum material, effectively avoids the forming defects, and ensures that the thickness deviation of the aluminum material meets the high-precision casting requirements.

[0026] 2, the closed-loop cooling system is formed by the water storage cavity, the water return cavity and the one-way valve, and the rotating roller dynamically adjusts the cooling liquid delivery amount according to the temperature and humidity sensor data, the ribs divide the top belt into independent cooling areas, and the grooves of each component realize the sealing and restraint of the cooling liquid, avoiding spillover, and the rubber strip of the water scraping assembly cooperates with the vacuum pump to efficiently scrape and recycle the residual water film, and the filter assembly of the water return cavity ensures the cleanliness of the cooling liquid. The synchronous and stable cooling of the top belt and the aluminum material is realized by the cooperative design, which not only solves the problem of heat accumulation, but also avoids insufficient cooling or excessive cooling, accelerates the conversion of the aluminum material from the molten state to the solid state, and improves the forming efficiency and surface quality.

[0027] 3. A stable bearing base is provided by the support seat and the mounting frame, the tensioning wheel, the fastening wheel and the support roller cooperate to maintain the top belt horizontal precision and motion stability, the edge block accurately limits the aluminum material width, prevents the lateral overflow of the aluminum liquid, the temperature and humidity sensor feedbacks the steel belt surface state in real time, the central control unit links to adjust the rotating roller speed, the wiper roller speed and the vacuum pump power, realizes the temperature and humidity dynamic balance, the components are matched by the structure and linked by the signal, form the all-around transmission constraint and process control, ensure that the key parameters such as pressure, temperature and humidity are stable in the process interval during the casting process, and guarantee the production continuity and product consistency. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a three-dimensional structure schematic diagram of the whole device of the application;

[0029] Figure 2 It is a three-dimensional structure schematic diagram of the whole device of the application in another direction;

[0030] Figure 3 It is a three-dimensional structure schematic diagram of the upper pressure assembly and the lower pressure assembly of the application;

[0031] Figure 4 It is a three-dimensional structure schematic diagram of the upper pressure assembly of the application;

[0032] Figure 5 It is a cross-sectional structure schematic diagram of the upper pressure assembly of the application;

[0033] Figure 6 It is a three-dimensional structure schematic diagram of the support roller of the application;

[0034] Figure 7 It is a cross-sectional structure schematic diagram of the support roller of the application;

[0035] Figure 8 It is a three-dimensional structure schematic diagram of the wiper assembly of the application.

[0036] BRIEF DESCRIPTION OF DRAWINGS: 1. Support assembly; 101. Support seat; 102. Mounting frame; 103. Hydraulic part; 2. Swing part; 3. Upper pressure assembly; 301. Connecting block; 3011. Water storage cavity; 3012. Water return cavity; 302. Top belt; 3021. Steel belt; 3022. Rib; 303. Tensioning wheel; 304. Fastening wheel; 305. Support roller; 3051. Bearing column; 3052. Detection block; 3053. Elastic column; 306. Rotating roller; 307. Wiper assembly; 3071. Wiper roller; 3072. Rubber strip; 4. Lower pressure assembly; 401. Bearing block; 402. Bottom belt; 5. Edge block. DETAILED DESCRIPTION

[0037] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0038] As shown in Figures 1-8 The present application comprises a double-belt aluminum material casting machine, which comprises a support assembly 1 for supporting the equipment and connecting electronic components, an oscillating part 2 connected to the support assembly 1 for adjusting the position of the upper pressure assembly 3, an upper pressure assembly 3 and a lower pressure assembly 4 connected to the oscillating part 2 respectively for forming aluminum material, and the upper pressure assembly 3 and the lower pressure assembly 4 correspond to each other, wherein the lower pressure assembly 4 corresponds to the position of the aluminum liquid inlet, and then the distance between the upper pressure assembly 3 and the lower pressure assembly 4 is adjusted according to the forming standard of the aluminum material, to ensure the stability of the forming effect of the aluminum material, and two edge blocks 5 for limiting the width of the aluminum material are connected to the lower pressure assembly 4.

[0039] In use, the position of the casting machine is fixed by the support assembly 1, and the position of the upper pressure assembly 3 is adjusted by the oscillating part 2, and the distance between the two edge blocks 5 is adjusted according to the width of the formed aluminum material, and in the process of forming the aluminum liquid, the distance between the upper pressure assembly 3 and the lower pressure assembly 4 is controlled to ensure the forming efficiency of the aluminum material.

[0040] The upper pressure assembly 3 comprises a connecting block 301 for connection and fixation, two ends of the connecting block 301 distributed along the length direction are respectively provided with a tensioning wheel 303 and a fastening wheel 304 for bearing connection, a top belt 302 for forming aluminum material is connected between the tensioning wheel 303 and the fastening wheel 304, the position of the top belt 302 is connected and fixed by the tensioning wheel 303 and the fastening wheel 304, to ensure that the resistance pressure of the top belt 302 during the forming of the aluminum material can meet the forming requirements of the aluminum plate.

[0041] In order to reduce the top band 302 in the tensioning wheel 303 and the fastening wheel 304, so as to improve the forming precision of the aluminum material, and then the connecting block 301 is provided with a plurality of supporting rollers 305 for maintaining the horizontal precision of the top band 302, and the supporting rollers 305 are in contact with the top band 302, and the position of the top band 302 is ensured to be stable through the cooperation between the tensioning wheel 303 and the fastening wheel 304, and then the middle region of the top band 302 is supported by the supporting rollers 305, so as to ensure the casting pressure of the top band 302 on the aluminum material, wherein the supporting roller 305 comprises a bearing column 3051 for rotary connection, the length of the bearing column 3051 corresponds to the width of the top band 302, so as to ensure the stability of the top band 302 during movement, and in order to identify the gravity change of the top band 302 and detect the forming state of the aluminum strip, a plurality of elastic columns 3053 for elastically supporting the top band 302 are connected to the outer circumference of the bearing column 3051, one end of the elastic column 3053 away from the bearing column 3051 is connected with a detection block 3052 for contacting the steel strip 3021, and a pressure sensor is arranged on the elastic column 3053, so as to realize multi-point distributed force monitoring, collect the pressure data of the top band 302 in contact with the aluminum material in real time, and transmit the data to the central control unit, and when the supporting roller 305 is in contact with the top band 302, the detection block 3052 is in contact with the surface of the top band 302, so as to maintain the stability of the movement of the top band 302, and when the upper pressure assembly 3 and the lower pressure assembly 4 cast the aluminum material, the top band 302 interacts with the aluminum material, and the top band 302 applies force on the detection block 3052, and the force received by the top band 302 is identified and received through the pressure sensor on the elastic column 3053, so as to analyze the force change of the top band 302 under the action of the aluminum material.

[0042] In the process of forming the aluminum material, when the aluminum material is in the normal casting state, the detection block 3052 and the top band 302 are in the normal pressure state, that is, the pressure sensor on the elastic column 3053 is in the stable pressure state, and the pressure value of the pressure sensor is in the relatively stable interval.

[0043] If the surface of the aluminum material appears in a wave state during casting, the force of the top band 302 will be abnormal, which will cause the pressure sensor on the elastic column 3053 to be abnormal, so that the pressure value of the same pressure sensor changes reciprocally, and the movement state of the top band 302 is adjusted in time according to the pressure change of the pressure sensor, so as to ensure the normal casting of the aluminum material.

[0044] It should be noted that the elastic pressure of the elastic column 3053 can meet the forming requirements of the top band 302 on the aluminum material, and the elastic force of the elastic column 3053 can be compensated according to the pressure value change of the pressure sensor.

[0045] That is, when the pressure sensor identifies that the pressure of the top belt 302 is abnormal, at this time, the elastic force of the elastic column 3053 is enhanced, the contact force of the detection block 3052 on the top belt 302 is increased, and the fluctuation amplitude of the top belt 302 is reduced.

[0046] Further, the lower pressure assembly 4 comprises a bearing block 401, and the bearing block 401 is provided with a bottom belt 402, wherein the positions of the bottom belt 402 and the top belt 302 correspond to each other, and the pressure casting of the aluminum material is realized through the cooperation between the bottom belt 402 and the top belt 302. That is, in the process of forming the aluminum material, the upper pressure assembly 3 and the lower pressure assembly 4 cooperate with each other to realize the casting of the aluminum material.

[0047] It should be noted that the structure of the lower pressure assembly 4 is completely same as that of the upper pressure assembly 3, and in order to avoid the description of the same structure, the structure of the upper pressure assembly 3 is described in detail in the present scheme, and the connection structure of the lower pressure assembly 4 can be referred to the structure description of the upper pressure assembly 3, and only the connection structure of the upper pressure assembly 3 is described in the subsequent description.

[0048] Further, in order to improve the service life of the top belt 302 and dissipate the heat in the process of forming the aluminum material, improve the forming efficiency of the aluminum material, a plurality of water storage cavities 3011 for storing cooling liquid and a water return cavity 3012 for returning the excess water film on the top belt 302 are arranged in the connecting block 301, and the water storage cavities 3011 and the water return cavity 3012 are communicated with each other, and the cooling liquid filtered by the water return cavity 3012 is supplemented into the water storage cavity 3011.

[0049] It should be noted that the communication part of the water storage cavity 3011 and the water return cavity 3012 is provided with a one-way valve, that is, the cooling liquid in the water return cavity 3012 can enter the water storage cavity 3011, and the cooling liquid in the water storage cavity 3011 cannot enter the water return cavity 3012.

[0050] Further, in order to facilitate the rapid recovery of the water film on the top belt 302 and reduce the interference of the water film accumulation on the aluminum material forming, one end of the water return cavity 3012 close to the top belt 302 is provided with a vacuum pump for adsorbing the water film, and the water return cavity 3012 is provided with a working assembly for filtering the recovered water. The structure of the working assembly for filtering is not described in detail, that is, to ensure that the cooling liquid entering the water return cavity 3012 does not contain impurities and does not affect the use of the cooling liquid in the water storage cavity 3011.

[0051] The position of the vacuum pump is close to the inner ring end face of the top belt 302, which ensures that the unevaporated water film on the top belt 302 can be adsorbed by the vacuum pump, and the unevaporated cooling liquid is introduced into the water return cavity 3012, so as to ensure the temperature stability of the aluminum material in the stage cooling process and does not interfere with the casting production of the aluminum material.

[0052] Further, in order to control the delivery rate of the cooling liquid in the water storage cavity 3011, the water storage cavity 3011 is provided with a rotating roller 306 for regulating the water delivery rate near the top belt 302, and the water return cavity 3012 is provided with a water scraping assembly 307 for cleaning the water film on the top belt 302 near the top belt 302. The rotating direction of the rotating roller 306 is the same as that of the water scraping assembly 307. In order to facilitate the description of the positions of the rotating roller 306 and the water scraping assembly 307, the same section of the top belt 302 is taken as an example. When the top belt 302 moves, it first passes through the water scraping assembly 307 and then passes through the rotating roller 306.

[0053] Specifically, when the top belt 302 moves with the rotation of the tensioning wheel 303 and the fastening wheel 304, the rotating roller 306 is controlled to rotate according to the aluminum production requirements, so that the cooling liquid in the water storage cavity 3011 is delivered to the top belt 302, so that the cooling liquid can flow on the top belt 302 and eliminate the heat carried on the top belt 302. At the same time, the water scraping assembly 307 is controlled to rotate, so that the water film on the top belt 302 passing through the water scraping assembly 307 is scraped, and the cooling liquid on the water scraping assembly 307 is sucked by the vacuum pump, so that the cooling temperature of the top belt 302 is stable and does not interfere with the molding of the aluminum material.

[0054] Further, in order to ensure the stability of the top belt 302 during movement and avoid the overflow of the cooling liquid on the top belt 302 during movement, the top belt 302 includes a steel belt 3021 for aluminum casting. The steel belt 3021 is connected to a plurality of ribs 3022 for partitioning the steel belt 3021 near one end of the connecting block 301. The length of the rib 3022 is the same as that of the inner ring of the steel belt 3021, so as to ensure that the rib 3022 can meet the demand of partitioning the steel belt 3021. At the same time, the rib 3022 is used to constrain the movement path of the water film, so as to avoid the overflow of the liquid from the edge of the steel belt 3021, which affects the cooling effect of the water film and the cleanliness of the working area.

[0055] The detection block 3052, the rotating roller 306, the water scraping assembly 307, the tensioning wheel 303 and the fastening wheel 304 are all provided with grooves. The positions of the grooves correspond to the connection areas of the ribs 3022, and the grooves and the ribs 3022 are nested with each other, so as to avoid the overflow of the water film from the contact between the ribs 3022 and the grooves.

[0056] Further, in order to ensure that the water film on the steel belt 3021 is fully removed, the wiper assembly 307 further comprises a wiper roller 3071 connected to the bearing for rotation, and a plurality of rubber strips 3072 for scraping the water film are connected to the outer circumference of the wiper roller 3071. The rubber strips 3072 are driven to rotate by the wiper roller 3071, so that the rubber strips 3072 move relative to the surface of the steel belt 3021, thereby achieving cleaning of the surface of the steel belt 3021.

[0057] Further, the support assembly 1 comprises a support seat 101, and a mounting frame 102 is connected to the support seat 101, and two hydraulic parts 103 are connected to the mounting frame 102, and the two hydraulic parts 103 are connected to the swing part 2.

[0058] Further, a plurality of temperature and humidity sensors are connected to one end of the top belt 302 close to the connecting block 301. The temperature and humidity sensors are used to identify and detect the temperature of the surface of the steel belt 3021 and the humidity change under the cooling of the water film, and the use parameters of the casting machine are adjusted in time according to the temperature and humidity state of the steel belt 3021.

[0059] The pressure position linkage algorithm is built in the central control unit, the data of the pressure sensor is received and identified, a pressure threshold database is first established, the corresponding standard pressure interval is preset according to the aluminum material quality and thickness, and manual correction of the threshold interval is supported through the man-machine interaction interface.

[0060] When it is detected that the pressure value of a certain area exceeds the threshold range, the algorithm automatically determines that it is "pressure abnormality", and analyzes the abnormal reason. If the local pressure is too high, it is determined that it may be that the aluminum material is protruding or the belt body is deviated; if the local pressure is too low, it is determined that it may be that the aluminum material is recessed or the belt body is relaxed; at the same time, for the area with too high pressure, the corresponding hydraulic part 103 is controlled to slightly release the pressure, and the elastic force of the elastic column 3053 of the support roller 305 in this area is reduced, and for the area with too low pressure, the hydraulic part 103 is controlled to slightly increase the pressure, and the elastic force of the elastic column 3053 is increased, so as to ensure that the belt body is closely attached to the aluminum material.

[0061] After the control instruction is issued, the pressure sensor continuously collects data, and the central control unit is real-time corrected: if the pressure returns to the standard interval, the current parameters are maintained; if it does not return, the control strategy is repeatedly executed until the pressure is stable, so as to ensure that the thickness deviation of the aluminum material meets the high-precision casting requirements.

[0062] At the same time, the temperature and humidity of the top belt 302 are controlled by the central control unit. When the average temperature of the surface of the belt body is higher than the preset value, it is determined that the cooling is insufficient, the rotating roller 306 is automatically increased in speed by the central control unit, and the cooling liquid delivery amount of the water storage cavity 3011 to the belt body is increased; when the average temperature is lower than the preset value, it is determined that the cooling is excessive, the rotating roller 306 is reduced in speed, and the cooling liquid delivery amount is reduced.

[0063] When the belt surface humidity value is higher than the preset value, it is determined that there is too much water film residue, the speed of the wiper roller 3071 of the wiper assembly 307 is increased, and the power of the vacuum pump is increased to accelerate the removal and recovery of the water film; when the humidity value is lower than the preset value, it is determined that the cooling is insufficient, and the speed of the wiper roller 3071 and the power of the vacuum pump are adjusted in the opposite direction to optimize the retention and effect of the cooling liquid on the belt surface.

[0064] By adjusting the wiper roller 3071 in the opposite direction, the water film is driven by the belt to move synchronously with the belt and cover the aluminum material contact area. The water film continuously absorbs the heat of the aluminum material through evaporation, ensuring that the cooling process of the aluminum material from the molten state to the solid state is stable within the process requirement interval, and avoiding process abnormalities caused by insufficient cooling.

[0065] In use, the support assembly 1 is used as the bearing base of the entire device, and the support seat 101 provides a stable installation reference. The two hydraulic parts 103 on the mounting frame 102 are in transmission connection with the swing part 2. By adjusting the extension and retraction of the hydraulic part 103, the swing part 2 is driven to make fine adjustments in angle and position, thereby accurately controlling the relative distance between the upper pressure assembly 3 and the lower pressure assembly 4 to meet the casting needs of aluminum materials of different thicknesses. The bottom belt 402 on the bearing block 401 of the lower pressure assembly 4 forms a corresponding casting working surface with the top belt 302 of the upper pressure assembly 3. In cooperation with the side stop block 5 on the lower pressure assembly 4, the distance between the two side stop blocks 5 is adjusted to accurately limit the width of the aluminum material during casting, avoiding lateral overflow of the aluminum liquid during casting.

[0066] The connecting block 301 of the upper pressure assembly 3 is a core bearing structure, the tensioning wheel 303 and the fastening wheel 304 rotatably connected at both ends of the connecting block 301 form a transmission support of the top belt 302, and the top belt 302 is driven to make a circular motion through synchronous rotation of the two. The steel belt 3021 of the top belt 302 directly contacts the molten aluminum material to realize pressure casting forming. A plurality of supporting rollers 305 distributed on the connecting block 301 are in close contact with the inner ring surface of the top belt 302, effectively offsetting the sagging deformation of the top belt 302 under the action of its own gravity and casting pressure, and guaranteeing the horizontal precision and motion stability of the top belt 302. The bearing column 3051 of the supporting roller 305 is connected with the detection block 3052 through the elastic column 3053, the pressure sensor built in the elastic column 3053 constructs a multi-point distributed force monitoring network, the detection block 3052 directly collides with the inner ring surface of the steel belt 3021 of the top belt 302, and the pressure data of the contact area between the top belt 302 and the aluminum material are collected in real time and transmitted to the central control unit. Under normal casting conditions, the contact pressure between the top belt 302 and the aluminum material is uniform and stable, and the detection value of the pressure sensor is maintained within the preset interval; when the aluminum material surface appears wavy defects, it will cause the top belt 302 to be out of balance, and the pressure sensor value in the corresponding area will appear reciprocating fluctuation, the central control unit quickly identifies the abnormality through the pressure position linkage algorithm, controls the corresponding hydraulic part 103 to slightly depressurize and reduce the elastic force of the elastic column 3053 for the area with too high pressure, and controls the hydraulic part 103 to slightly increase the pressure and increase the elastic force of the elastic column 3053 for the area with too low pressure, while the elastic column 3053 enhances the supporting force of the detection block 3052 to the top belt 302 through its own elastic compensation effect, reduces the fluctuation amplitude of the top belt 302, and continuously corrects the parameters by using the central control unit until the pressure is restored to stability, ensuring the forming precision of the aluminum material.

[0067] To solve the problem of heat accumulation in the casting process, the water storage cavity 3011 and the backwater cavity 3012 inside the connecting block 301 form a cooling liquid circulation system. The water storage cavity 3011 stores cooling liquid for cooling, and the backwater cavity 3012 is responsible for recycling the cooling liquid that has not evaporated on the surface of the top belt 302. The two are connected in one direction through a one-way valve to ensure that the filtered cooling liquid can be recycled and supplemented to the water storage cavity 3011. The rotating roller 306 near the water storage cavity 3011 on the side of the top belt 302, the rotating speed of which is dynamically regulated by the central control unit according to the detection data of the temperature and humidity sensor, uniformly delivers the cooling liquid in the water storage cavity 3011 to the inner ring surface of the steel belt 3021 of the top belt 302 through the rotation of the rotating roller 306. The cooling liquid forms a uniform water film on the surface of the steel belt 3021, absorbs the heat generated during the casting process of the aluminum material through heat exchange, realizes the synchronous cooling of the top belt 302 and the aluminum material, and improves the forming efficiency and quality of the aluminum material. The inner ring surface of the steel belt 3021 of the top belt 302 is provided with a plurality of ribs 3022, which divide the steel belt 3021 into a plurality of independent cooling areas, effectively constrain the flow path of the water film, avoid the overflow of the cooling liquid from the edge of the steel belt 3021, and at the same time, the detection block 3052 of the supporting roller 305, the rotating roller 306, the water scraping assembly 307, and the tensioning wheel 303 and the fastening wheel 304 are all provided with grooves matched with the ribs 3022. Through the nesting cooperation of the grooves and the ribs 3022, the movement stability of the top belt 302 and the sealing effect of the cooling liquid are further improved.

[0068] The water return cavity 3012 cooperates with the vacuum pump to work with the wiper assembly 307 near the top belt 302. When the wiper roller 3071 of the wiper assembly 307 rotates, the rubber strip 3072 on the outer circumference thereof moves relative to the inner ring surface of the steel belt 3021, so that the residual water film on the surface of the steel belt 3021 is scraped off. The vacuum pump quickly sucks the scraped-off cooling liquid into the water return cavity 3012 through negative pressure adsorption, so as to avoid that the residual water film affects the surface quality of the aluminum material or causes cooling temperature fluctuation. The working assembly in the water return cavity 3012 filters the recycled cooling liquid to remove impurities such as aluminum scraps possibly contained in the cooling liquid, so as to ensure the cleanliness of the recycled cooling liquid and avoid that the impurities affect the cooling effect and equipment components. The plurality of temperature and humidity sensors near one end of the connecting block 301 of the top belt 302 detect the temperature and humidity data on the surface of the steel belt 3021 in real time and feed back to the central control unit. When the average temperature of the steel belt 3021 is detected to be higher than a preset value, it is determined that the cooling is insufficient, and the central control unit automatically increases the rotating speed of the rotating roller 306 to increase the cooling liquid delivery amount. When the temperature is lower than the preset value, it is determined that the cooling is excessive, and the rotating speed of the rotating roller 306 is reduced to reduce the cooling liquid delivery amount. When the surface humidity of the steel belt 3021 is detected to be higher than a preset value, it is determined that the residual water film is too much, and the rotating speed of the wiper roller 3071 and the power of the vacuum pump are increased to accelerate the scraping and recycling of the water film. When the humidity is lower than the preset value, the rotating speed of the wiper roller 3071 and the power of the vacuum pump are adjusted in the opposite direction to optimize the retention time and effect of the cooling liquid on the surface of the steel belt 3021, so as to ensure that the temperature reduction process of the aluminum material from the molten state to the solid state is stably within the process requirement interval.

[0069] The application also includes a casting process realized by using the double-belt aluminum material casting machine, which comprises the following steps:

[0070] S1, adjust the hydraulic part 103 on the mounting frame 102 of the support assembly 1, drive the swing part 2 to match the distance between the upper pressure assembly 3 and the lower pressure assembly 4 to the target thickness of the aluminum material, and adjust the distance between the edge blocks 5 on the lower pressure assembly 4 to adapt to the width of the aluminum material;

[0071] S2, start the tensioning wheel 303 and the fastening wheel 304 at both ends of the connecting block 301 in the upper pressure assembly 3, drive the top belt 302 to circulate, calibrate the levelness of the top belt 302 through the support roller 305 on the connecting block 301, and adjust the pre-tightening force of the elastic column 3053 in the support roller 305 to make the detection block 3052 uniformly contact with the top belt 302;

[0072] S3, uniformly inject the pre-processed molten aluminum liquid into the casting area between the upper pressure assembly 3 and the lower pressure assembly 4, and receive the data of the pressure sensor on the elastic column 3053 in real time. When the pressure is too high, control the hydraulic part 103 of the corresponding area to release pressure and reduce the elastic force of the elastic column 3053. When the pressure is too low, control the hydraulic part 103 to increase pressure and improve the elastic force of the elastic column 3053;

[0073] S4, when the temperature is too high, the rotation speed of the rotating roller 306 on the side close to the top belt 302 of the water storage cavity 3011 is increased, and the delivery amount of the cooling liquid is increased;

[0074] S5, when the temperature is too low, the rotation speed of the rotating roller 306 is reduced, and the delivery amount is reduced; when the humidity is too high, the rotation speed of the water scraping roller 3071 in the water scraping assembly 307 on the side close to the top belt 302 of the water return cavity 3012 and the power of the vacuum pump are increased.

[0075] It should be noted that in this text, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or equipment.

[0076] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A twin-belt aluminum material casting machine comprising a support assembly (1), characterized in that: The support assembly (1) is connected with a swing part (2), the swing part (2) is connected with an upper pressure assembly (3) and a lower pressure assembly (4) respectively, the upper pressure assembly (3) and the lower pressure assembly (4) correspond to each other, and the lower pressure assembly (4) is connected with an edge stopper (5); The upper pressure assembly (3) comprises a connecting block (301), the connecting block (301) is rotatably provided with a tensioning wheel (303) and a fastening wheel (304) at two ends distributed along the length direction respectively, and a top belt (302) is connected between the tensioning wheel (303) and the fastening wheel (304); A plurality of supporting rollers (305) are rotatably provided on the connecting block (301), and the supporting rollers (305) are in contact with the top belt (302), the supporting roller (305) comprises a bearing column (3051), a plurality of elastic columns (3053) are connected to the outer circumference of the bearing column (3051), a detection block (3052) is connected to the end of the elastic column (3053) away from the bearing column (3051), and a pressure sensor is arranged on the elastic column (3053).

2. A twin belt aluminum material casting machine according to claim 1, characterized in that: The lower pressure assembly (4) comprises a bearing block (401), and the bearing block (401) is provided with a bottom belt (402).

3. A twin belt aluminum material casting machine according to claim 1, characterized in that: A plurality of water storage cavities (3011) and water return cavities (3012) are respectively formed in the connecting block (301), and the water storage cavities (3011) and the water return cavities (3012) are in communication with each other.

4. A twin belt aluminum material casting machine according to claim 3, characterized in that: A vacuum pump is arranged at one end of the water return cavity (3012) close to the top belt (302), and a working assembly for filtering the recycled water is arranged in the water return cavity (3012).

5. A twin belt aluminum material casting machine according to claim 3, characterized in that: A rotating roller (306) is rotatably arranged at one side of the water storage cavity (3011) close to the top belt (302), and a water scraping assembly (307) is rotatably arranged at one side of the water return cavity (3012) close to the top belt (302).

6. A twin belt aluminum material casting machine according to claim 1, characterized in that: The top belt (302) comprises a steel belt (3021), and a plurality of rib strips (3022) for partitioning the steel belt (3021) are connected to one end of the steel belt (3021) close to the connecting block (301).

7. A twin belt aluminum material casting machine according to claim 5, characterized in that: The water scraping assembly (307) comprises a water scraping roller (3071), and a plurality of rubber strips (3072) are connected to the outer circumference of the water scraping roller (3071).

8. A twin belt aluminum material casting machine according to claim 1, characterized in that: The support assembly (1) comprises a support seat (101), the support seat (101) is connected with a mounting frame (102), two hydraulic parts (103) are connected to the mounting frame (102), and the two hydraulic parts (103) are connected with the swing part (2) respectively.

9. A twin belt aluminum material casting machine according to claim 1, characterized in that: A plurality of temperature and humidity sensors are connected to one end of the connecting block (301) close to the top belt (302).

10. A casting process using a twin-belt aluminum material casting machine according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: S1, adjusting the hydraulic parts (103) on the mounting frame (102) of the support assembly (1), driving the swing part (2) to match the distance between the upper pressure assembly (3) and the lower pressure assembly (4) with the target thickness of the aluminum material, and adjusting the distance between the edge stoppers (5) on the lower pressure assembly (4) to adapt to the width of the aluminum material; S2, start the upper pressure assembly (3) connecting block (301) both ends of the tension wheel (303) and fastening wheel (304), drive the top belt (302) cycle movement, through the support roller (305) on the connecting block (301) calibration top belt (302) levelness, adjust the pre-tightening force of the elastic column (3053) in the support roller (305), so that the detection block (3052) and the top belt (302) are in uniform contact; S3, the preprocessed molten aluminum liquid is injected into the casting area between the upper pressure assembly (3) and the lower pressure assembly (4) at a constant speed, and the data of the elastic column (3053) pressure sensor is received in real time. When the pressure is too high, control the hydraulic part (103) of the corresponding area to relieve pressure and reduce the elastic force of the elastic column (3053); when the pressure is too low, control the hydraulic part (103) to increase the pressure and improve the elastic force of the elastic column (3053); S4, when the temperature is too high, increase the rotating speed of the rotating roller (306) near the top belt (302) side of the water storage cavity (3011), increase the cooling liquid delivery capacity; S5, when the temperature is too low, reduce the rotating speed of the rotating roller (306), reduce the delivery capacity; when the humidity is too high, increase the rotating speed of the water scraping roller (3071) in the water scraping assembly (307) near the top belt (302) side of the water return cavity (3012) and the power of the vacuum pump.

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