Automatic production line for metal shell of three-roller plate bending machine

Abstract

The invention relates to the technical field of metal shell production equipment, and discloses a three-roller plate bending machine metal shell automatic production line which comprises a side frame and a control table arranged on one side of the side frame and further comprises a conveying assembly, a positioning assembly, a dynamic grinding assembly, an electric welding assembly, a feeding assembly and a plate bending machine assembly. According to the automatic production line for the metal shell of the three-roller plate bending machine, through a screw rod of the plate bending unit and an automatic discharging structure of a discharging push plate, the traditional operation that the three-roller plate bending machine is manually carried and withdrawn is replaced, the problems that the efficiency is low and the shell is prone to collision deformation caused by manual transfer are solved, meanwhile, a laser sensor automatically positions the position of a welding seam, and the production efficiency is improved. And in cooperation with automatic feeding driven by a servo motor, feeding of an electric welding head controlled by an electric telescopic rod and movement of a polishing head controlled by a rotating motor, automatic connection of the whole process of feeding, plate rolling, welding and polishing is achieved, and the production period is greatly shortened.

Description

Technical Field

[0001] This invention relates to the field of metal casing production equipment technology, specifically to an automated production line for metal casings using a three-roll plate rolling machine. Background Technology

[0002] In the production of cylindrical fuel tank metal shells, processes such as feeding, plate rolling, welding, and grinding are required. However, each process is mostly handled by independent equipment, relying on manual labor or simple conveyor belts to transfer workpieces. In the plate rolling process, a three-roll plate rolling machine is typically used to roll the sheet metal into a cylindrical shape. However, when the three-roll plate rolling machine is discharging the material, the metal shell is usually removed manually without a positioning and conveying component. This not only increases the transfer and conveying time but also makes the shell prone to deformation due to collisions. In the welding and grinding processes, there is no data linkage structure between the two. The welded shell directly enters the grinding station. The grinding equipment cannot obtain key parameters such as the weld position and length, requiring manual repositioning of the weld, resulting in low grinding efficiency. At the same time, the grinding unit lacks a pressure feedback adjustment structure, relying solely on manual experience to control the grinding intensity. This can easily lead to over-grinding, resulting in uneven shell wall thickness or incomplete grinding leaving weld slag. Summary of the Invention

[0003] The purpose of this invention is to provide an automated production line for the metal casing of a three-roll plate rolling machine to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an automated production line for the metal casing of a three-roll plate rolling machine, comprising a side frame and a control console disposed on one side of the side frame, and further comprising a conveying assembly, a positioning assembly, a dynamic grinding assembly, a welding assembly, a feeding assembly, and a plate rolling machine assembly, wherein: The side frame includes two sets of symmetrically arranged side slide rails. The bottom of the side slide rails is fixed to the bottom surface by a support rod, and a back plate is fixed to the side of the side slide rails by bolts. The conveying assembly includes a slide plate, a front plate, a fixed vertical plate, a base plate, a servo motor, a lead screw, and a slide groove. The slide plates are arranged symmetrically on the top and bottom. The fixed vertical plate is fixed between the slide plates by screws. The lead screw passes through the base plate and rotates in a spiral manner. One end of the lead screw is welded to the servo motor. The bottom end of the slide plate is welded to the upper end of the base plate. The two ends of the slide plate are fitted with side slide rails and slide in a sliding fit. The front plate is welded to the slide plate located below. The bottom end of the base plate is fitted with a slide groove and slides in a sliding fit. The servo motor is electrically connected to the control console.

[0005] The servo motor acts on the base plate through the lead screw. Under the push of the helical force, the base plate slides in the slide groove, thereby driving the slide plate above to slide in the side slide rail. The slide plate drives the metal shell on it to move towards the welding assembly.

[0006] The positioning assembly includes a cylinder, a top pressure plate, a wheel plate, a guide wheel, a concentric shaft, a pulley, a belt, and a motor. The pulley is welded to the concentric shaft and the motor respectively, and the belt is nested on the outside of the pulley.

[0007] The cylinder is fixed to the upper slide plate by bolts. The top pressure plate is welded to one end of the cylinder. The top pressure plate has an arc-shaped structure. The wheel plate is welded to the slide plate and is symmetrically arranged on both sides of the front plate. The concentric shaft is fitted with the wheel plate and slides. The guide wheel is symmetrically welded to the concentric shaft. The motor is electrically connected to the control console.

[0008] During the unloading process, the metal housing slides down between the wheel plates supported by the front plate. The lower ends of the metal housing abut against the guide wheels on both sides. Then, the control console starts the motor. The motor drives the concentric shaft to rotate on the wheel plate through the pulley and belt linkage, thereby driving the guide wheels to rotate. The guide wheels can drive the metal housing to rotate slowly through friction in order to detect the weld position. The cylinder can use a push rod to drive the arc-shaped top pressure plate to abut against the top surface of the metal shell, thereby fixing it and preventing subsequent shaking of the metal shell from causing deviations in electric welding and grinding, thus improving product quality.

[0009] Furthermore, the welding assembly includes a fixed frame, which is fixed to the back plate by screws. The fixed frame is fitted with the welding head and slides in fit. Laser sensors are respectively provided at the same height on both sides of the welding head. One end of the welding head is fixedly connected to an electric telescopic rod. The laser sensors and the electric telescopic rod are electrically connected to the control console.

[0010] The laser sensor continuously emits a laser beam toward the arc-shaped side of the metal casing. If the irradiated surface is seamless, the laser beam will be reflected along a fixed path and received by the photosensitive element inside the sensor at a fixed position. If there is a gap, the laser beam will irradiate the edge or bottom of the gap, changing the reflection path and causing the receiving position on the photosensitive element to shift, thereby locating the gap. The signal data received by the laser sensor will be fed back to the control console. When a gap is detected, the control console will stop the motor, so that the height of the gap is equal to that of the welding head and the grinding head, facilitating subsequent welding and grinding.

[0011] When the edge of the metal casing moves to the horizontal position of the welding head, the electric telescopic rod pushes the welding head closer to the gap to start welding. At the same time, the laser sensor on one side of the welding head uses the same principle to detect the solder excess height data at the welding point and feeds it back to the control console in real time.

[0012] Furthermore, the dynamic grinding assembly includes an L-shaped side plate, which is fixed to the inside of the back plate by bolts. The bottom surface of the L-shaped side plate is fitted with a grinding motor and is slidably engaged. One end of the grinding motor is connected to the grinding head through a pressure sensor, and the pressure sensor is electrically connected to the control console.

[0013] Furthermore, a push plate is welded to one side of the grinding motor. The push plate is penetrated by a lead screw and rotates in a spiral manner. One end of the lead screw passes through the back plate and is welded to one end of the rotary motor. The rotary motor is fixed to the back plate by screws.

[0014] A rotary motor drives a lead screw to move a push plate forward, which in turn drives a grinding head on a grinding motor to grind the weld. The control console uses data on solder excess height transmitted back by a laser sensor to precisely control the number of rotations of the rotary motor. When the grinding head comes into contact with the weld, a pressure sensor collects the pressure data of the grinding head and feeds it back to the control console, so that welds with larger excess height correspond to larger grinding pressure. This achieves automatic adjustment of grinding pressure, avoiding over-grinding or under-grinding, and realizing the coordinated work of welding and grinding, which greatly improves product quality.

[0015] Furthermore, the feeding assembly includes a support plate, on which a pressure plate is fixed. Several sliding rollers are equidistantly fitted on the top surface of the pressure plate and rotate in cooperation with it. Fixed columns are symmetrically arranged on both sides of the pressure plate. Traction rollers are fitted between the fixed columns and rotate in cooperation with it. One end of the traction roller is connected to a traction motor, and the traction motor is fixed to one side of the fixed column by screws.

[0016] The metal sheet is placed between the pressure plate and the traction roller. The traction motor is started, and the traction motor drives the traction roller to rotate. The friction causes the sheet to slide on the sliding roller, and the sheet enters the plate rolling machine assembly horizontally under traction.

[0017] Furthermore, the plate rolling machine assembly includes a machine body, on which a drive roller is provided, and auxiliary rollers are symmetrically provided below the drive roller. One end of the drive roller is connected to a plate rolling motor, and the other end is fitted with a support bearing. The bottom end of the support bearing is fitted into the machine body and rotates in cooperation with it. One side of the support bearing is connected to one end of a hydraulic cylinder.

[0018] The plate motor drives the active roller to rotate, and with the squeezing action of the auxiliary roller, the plate is wound into a cylindrical shape. After the plate is rolled, the hydraulic cylinder is activated. The push rod of the hydraulic cylinder retracts, causing the support bearing to rotate around the lower end, and then disengage from one end of the active roller, and then the material is unloaded.

[0019] Furthermore, the machine body is equipped with a rotating motor, one end of which is connected to a screw rod. The screw rod is fitted into the feeding push plate and rotates in a screw-like manner. Both ends of the feeding push plate are slidably connected by guide rods, which are welded to the machine body.

[0020] The control panel starts the rotating motor, which drives the screw to rotate. The screw interacts with the feeding push plate. Under the action of the screw, the feeding push plate slides forward along the guide rod and then abuts against the cylindrical metal shell. The metal shell slides forward under the continuous thrust.

[0021] Furthermore, an optimization component is added to the back panel. The optimization component includes a preheating tank, which is fixed to the back panel by bolts and located behind one of the laser sensors. An infrared preheating lamp is installed inside the preheating tank, and the infrared preheating lamp is at the same height as the laser sensor. A high-pressure cold air nozzle is installed on the back panel in front of the dynamic grinding component. The high-pressure cold air nozzle is connected to a solenoid valve through a pipe. The solenoid valve is connected to a low-temperature gas storage tank through a conduit. The solenoid valve is electrically connected to the control console.

[0022] Before welding, the control console activates infrared preheating lamps to heat the weld seam, preventing excessively low temperatures in the weld area before welding, which could cause welding stress, deformation, and cracking of the welded parts, thus ensuring product quality. After the metal shell is welded, the control console opens the solenoid valve, and low-temperature gas from the cryogenic storage tank is sprayed out through a high-pressure cold air nozzle to cool the weld area, ensuring that the weld temperature does not become too high during grinding. At the same time, the feedback regulation of the solenoid valve and the pressure sensor are linked. When the grinding pressure increases, the control console automatically increases the opening of the solenoid valve to improve the cooling effect, thereby avoiding excessively high weld temperatures during grinding, which could lead to weld oxidation and rapid damage to the grinding head, thus improving product quality.

[0023] Compared with the prior art, the present invention provides an automated production line for the metal casing of a three-roll plate bending machine, which has the following advantages: 1. This automated production line for metal shells of a three-roll plate rolling machine replaces the traditional manual handling and removal of the machine by using the spiral rod of the rolling unit and the automatic unloading structure of the unloading pusher. This eliminates the problems of low efficiency and easy deformation of the shell caused by manual handling. At the same time, the laser sensor automatically locates the weld seam position, eliminating the need for manual re-finding. Combined with the automatic feeding driven by the servo motor, the electric telescopic rod controlling the welding head feed, and the rotary motor controlling the grinding head movement, the entire process of feeding, rolling, welding, and grinding is automated, significantly shortening the production cycle.

[0024] 2. This three-roll plate rolling machine metal shell automated production line uses laser sensors to detect and provide feedback on the solder excess height in real time. During the grinding stage, the control console precisely adjusts the grinding head pressure based on the excess height data, achieving a precise match where the greater the excess height, the greater the grinding pressure, thus completely solving the problem of over-grinding or under-grinding caused by manual experience control. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the side frame structure of the present invention; Figure 3 This is a schematic diagram of the conveying component structure of the present invention; Figure 4This is a schematic diagram of the positioning component structure of the present invention; Figure 5 This is a schematic diagram of the dynamic polishing component structure of the present invention; Figure 6 This is a schematic diagram of the welding assembly structure of the present invention; Figure 7 This is a schematic diagram of the feeding assembly structure of the present invention; Figure 8 This is a schematic diagram of the plate rolling machine assembly structure of the present invention; Figure 9 This is a schematic diagram of the optimized component structure of the present invention.

[0026] In the diagram: 1. Side frame; 2. Control console; 3. Conveying assembly; 4. Positioning assembly; 5. Dynamic grinding assembly; 6. Welding assembly; 7. Feeding assembly; 8. Plate rolling machine assembly; 9. Optimization assembly; 11. Side slide rail; 12. Support rod; 13. Back plate; 31. Slide plate; 32. Front plate; 33. Fixed vertical plate; 34. Base plate; 35. Servo motor; 36. Lead screw; 37. Slide groove; 41. Cylinder; 42. Top pressure plate; 43. Wheel plate; 44. Guide wheel; 45. Concentric shaft; 46. Pulley; 47. Belt; 48. Motor; 51. L-shaped side plate; 52. Grinding motor; 53. Pressure sensor; 54. Grinding wheel. 55. Grinding head; 56. Push plate; 57. Lead screw; 68. Rotary motor; 69. Fixed frame; 60. Welding head; 61. Laser sensor; 62. Electric telescopic rod; 73. Support plate; 74. Pressure plate; 75. Sliding roller; 76. Fixed column; 87. Traction roller; 88. Traction motor; 89. Machine body; 80. Drive roller; 81. Auxiliary roller; 82. Plate rolling motor; 83. Support bearing; 84. Hydraulic cylinder; 85. Rotary motor; 86. Spiral rod; 87. Material feeding push plate; 88. Guide rod; 99. Preheating tank; 90. Infrared preheating lamp; 91. High-pressure cold air nozzle; 92. Solenoid valve; 93. Low-temperature gas storage tank. Detailed Implementation

[0027] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0028] Please see Figures 1-8 An automated production line for the metal casing of a three-roll plate rolling machine includes a side frame 1 and a control console 2 located on one side of the side frame 1. It also includes a conveying assembly 3, a positioning assembly 4, a dynamic grinding assembly 5, an electric welding assembly 6, a feeding assembly 7, and a plate rolling machine assembly 8, wherein: The side frame 1 includes two sets of symmetrically arranged side slide rails 11. The bottom of the side slide rails 11 is fixed to the bottom surface by support rods 12, and the side of the side slide rails 11 is fixed with a back plate 13 by bolts. The conveying assembly 3 includes a slide plate 31, a front plate 32, a fixed vertical plate 33, a base plate 34, a servo motor 35, a lead screw 36, and a slide groove 37. The slide plates 31 are arranged symmetrically at the top and bottom. The fixed vertical plate 33 is fixed between the slide plates 31 by screws. The lead screw 36 passes through the base plate 34 and rotates in a spiral manner. One end of the servo motor 35 is welded to the lead screw 36, and the bottom end of the slide plate 31 is welded to the upper end of the base plate 34. The two ends of the slide plate 31 are fitted with the side slide rails 11 and slide in a sliding fit. The front plate 32 is welded to the slide plate 31 located below. The bottom end of the bottom plate 34 is fitted with the slide groove 37 and slides in a sliding fit. The servo motor 35 is electrically connected to the control console 2.

[0029] The servo motor 35 acts on the base plate 34 through the lead screw 36. Under the push of the helical force, the base plate 34 slides in the slide groove 37, thereby driving the upper slide plate 31 to slide in the side slide rail 11. The slide plate 31 drives the metal shell on it to move towards the welding assembly 6.

[0030] The positioning assembly 4 includes a cylinder 41, a top pressure plate 42, a wheel plate 43, a guide wheel 44, a concentric shaft 45, a pulley 46, a belt 47, and a motor 48. The pulley 46 is welded to the concentric shaft 45 and the motor 48 respectively, and the belt 47 is nested on the outside of the pulley 46.

[0031] The cylinder 41 is fixed to the upper slide plate 31 by bolts. The top pressure plate 42 is welded to one end of the cylinder 41. The top pressure plate 42 has an arc-shaped structure. The wheel plate 43 is welded to the slide plate 31 and is symmetrically arranged on both sides of the front plate 32. The concentric shaft 45 is fitted into the wheel plate 43 and slides. The guide wheel 44 is symmetrically welded to the concentric shaft 45. The motor 48 is electrically connected to the control console 2.

[0032] During unloading, the metal housing slides down between the wheel plates 43 supported by the front plate 32. The lower ends of the metal housing abut against the guide wheels 44. Then, the control console 2 starts the motor 48. The motor 48 drives the concentric shaft 45 to rotate on the wheel plate 43 through the linkage of the pulley 46 and the belt 47, thereby driving the guide wheels 44 to rotate. The guide wheels 44 can drive the metal housing to rotate slowly through friction in order to detect the weld position. The cylinder 41 can use the push rod to drive the arc-shaped top pressure plate 42 to abut against the top surface of the metal shell, thereby fixing it and preventing the subsequent shaking of the metal shell from causing deviations in electric welding and grinding, thus improving product quality.

[0033] Furthermore, the welding assembly 6 includes a fixed frame 61, which is fixed to the back plate 13 by screws. The fixed frame 61 is fitted with the welding head 62 and slides in fit. Laser sensors 63 are respectively provided at the same height on both sides of the welding head 62. One end of the welding head 62 is fixedly connected to an electric telescopic rod 64. The laser sensors 63 and the electric telescopic rod 64 are electrically connected to the control console 2.

[0034] The laser sensor 63 continuously emits a laser beam toward the arc-shaped side of the metal housing. If the irradiated surface is seamless, the laser beam will be reflected along a fixed path and received by the photosensitive element inside the sensor at a fixed position. If there is a gap, the laser beam will irradiate the edge or bottom of the gap, changing the reflection path and causing the receiving position on the photosensitive element to shift, thereby locating the gap. The signal data received by the laser sensor 63 will be fed back to the control console 2. When a gap is detected, the control console 2 controls the motor 48 to stop working, so that the height of the gap is equal to that of the welding head 62 and the grinding head 54, facilitating subsequent welding and grinding.

[0035] When the edge of the metal casing moves to the horizontal position of the welding head 62, the electric telescopic rod 64 pushes the welding head 62 closer to the gap to start welding. At the same time, the laser sensor 63 on one side of the welding head 62 uses the same principle to detect the solder excess height data at the welding point and feeds it back to the control console 2 in real time.

[0036] Furthermore, the dynamic polishing assembly 5 includes an L-shaped side plate 51, which is fixed to the inside of the back plate 13 by bolts. The bottom surface of the L-shaped side plate 51 is fitted with a polishing motor 52 and slides in fit. One end of the polishing motor 52 is connected to the polishing head 54 through a pressure sensor 53, and the pressure sensor 53 is electrically connected to the control console 2.

[0037] Furthermore, a push plate 55 is welded to one side of the grinding motor 52. The push plate 55 is penetrated by a lead screw 56 and rotates in a spiral manner. One end of the lead screw 56 passes through the back plate 13 and is welded to one end of the rotary motor 57. The rotary motor 57 is fixed to the back plate 13 by screws.

[0038] The rotary motor 57 drives the lead screw 56 to move the push plate 55 forward, which in turn drives the grinding head 54 on the grinding motor 52 to grind the weld. The control console 2 uses the solder excess height data transmitted back by the laser sensor 63 to precisely control the number of rotations of the rotary motor 57. When the grinding head 54 comes into contact with the weld, the pressure sensor 53 collects the pressure data of the grinding head 54 and feeds it back to the control console 2, so that the weld with a larger excess height corresponds to a larger grinding pressure, thereby realizing automatic adjustment of grinding pressure, avoiding over-grinding or under-grinding, realizing the coordinated work of welding and grinding, and greatly improving product quality.

[0039] Furthermore, the feeding assembly 7 includes a support plate 71, on which a pressure plate 72 is fixed. Several sliding rollers 73 are equidistantly fitted on the top surface of the pressure plate 72 and rotate in cooperation with it. Fixed columns 74 are symmetrically arranged on both sides of the pressure plate 72. Traction rollers 75 are fitted between the fixed columns 74 and rotate in cooperation with it. One end of the traction roller 75 is connected to a traction motor 76. The traction motor 76 is fixed to one side of the fixed column 74 by screws.

[0040] The metal sheet is placed between the pressure plate 72 and the traction roller 75. The traction motor 76 is started, and the traction motor 76 drives the traction roller 75 to rotate. The friction causes the sheet to slide on the sliding roller 73, and the sheet enters the plate rolling machine assembly 8 horizontally under traction.

[0041] Furthermore, the plate rolling machine assembly 8 includes a machine body 81, an active roller 82 is provided on the machine body 81, and auxiliary rollers 83 are symmetrically provided below the active roller 82. One end of the active roller 82 is connected to the plate rolling motor 84, and the other end is fitted with a support bearing 85. The bottom end of the support bearing 85 is fitted with the machine body 81 and rotates in cooperation. One side of the support bearing 85 is connected to one end of the oil cylinder 86.

[0042] The plate motor 84 drives the active roller 82 to rotate, and with the squeezing action of the auxiliary roller 83, the plate is rolled into a cylindrical shape. After the plate is rolled, the hydraulic cylinder 86 is activated. The push rod of the hydraulic cylinder 86 retracts, causing the support bearing 85 to rotate around the lower end, and then disengage from one end of the active roller 82, and then the material is unloaded.

[0043] Furthermore, the machine body 81 is equipped with a rotating motor 87, one end of which is connected to a screw rod 88. The screw rod 88 is fitted into the feeding push plate 89 and rotates in a screw-like manner. The two ends of the feeding push plate 89 are penetrated by guide rods 891 and are slidably engaged. The guide rods 891 are welded to the machine body 81.

[0044] The control console 2 starts the rotating motor 87, which drives the screw rod 88 to rotate. The screw rod 88 interacts with the feeding push plate 89. Under the action of the screw force, the feeding push plate 89 slides forward along the guide rod 891 and then abuts against the cylindrical metal shell. The metal shell slides forward under the continuous thrust. Example 2

[0045] Please see Figure 9The difference between Embodiment 2 and Embodiment 1 is that: an optimization component 9 is added to the back plate 13. The optimization component 9 includes a preheating tank 91, which is fixed to the back plate 13 by bolts and located behind one of the laser sensors 63. An infrared preheating lamp 92 is provided inside the preheating tank 91. The infrared preheating lamp 92 is at the same height as the laser sensor 63. A high-pressure cold air nozzle 93 is installed on the back plate 13 in front of the dynamic grinding component 5. The high-pressure cold air nozzle 93 is connected to a solenoid valve 94 through a pipe. The solenoid valve 94 is connected to a low-temperature gas storage tank 95 through a conduit. The solenoid valve 94 is electrically connected to the control console 2.

[0046] Before welding, the control console 2 first activates the infrared preheating lamp 92 to irradiate and heat the weld seam, avoiding excessively low temperature in the weld seam area before welding, which could cause welding stress, deformation, and cracking of the welded parts, thus ensuring product quality. After the metal shell is welded, the control console 2 controls the solenoid valve 94 to open, and the low-temperature gas in the low-temperature storage tank 95 is sprayed out through the high-pressure cold air nozzle 93 to cool the weld seam area, ensuring that the weld seam temperature does not become too high during grinding. At the same time, the feedback regulation of the solenoid valve 94 and the pressure sensor 53 are linked. When the grinding pressure increases, the control console 2 automatically increases the opening of the solenoid valve 94 to improve the cooling effect, thereby avoiding excessively high weld seam temperature during grinding, which could lead to weld seam oxidation and rapid damage to the grinding head, thus improving product quality.

[0047] The specific usage and function of this embodiment are as follows: In use, first input the plate rolling parameters through the control console 2, then place the metal sheet between the pressure plate 72 and the traction roller 75, start the traction motor 76, the traction motor 76 drives the traction roller 75 to rotate, and use friction to drive the plate to slide on the sliding roller 73. Under traction, the plate enters horizontally between the active roller 82 and the auxiliary roller 83. Under the control of the control console 2, the plate rolling motor 84 is started to start the plate rolling operation. The plate rolling motor 84 drives the active roller 82 to rotate, and with the squeezing action of the auxiliary roller 83, the plate is rolled into a cylindrical shape. After the plate is rolled, the hydraulic cylinder 86 is activated. The push rod of the hydraulic cylinder 86 retracts, causing the support bearing 85 to rotate around the lower end, and then disengage from one end of the drive roller 82. Then the unloading begins. The control console 2 starts the rotating motor 87, which drives the screw rod 88 to rotate. The screw rod 88 interacts with the unloading push plate 89. Under the action of the screw force, the unloading push plate 89 slides forward along the guide rod 891 and then abuts against the cylindrical metal shell. The metal shell slides forward under the continuous thrust and slides down between the wheel plates 43 supported by the front plate 32. The lower ends of the metal shell abut against the guide wheels 44 on both sides. Subsequently, the control console 2 starts the motor 48. The motor 48 drives the concentric shaft 45 to rotate on the wheel plate 43 through the linkage of the pulley 46 and the belt 47, thereby driving the guide wheel 44 to rotate. The guide wheel 44 drives the metal shell to rotate slowly through friction. At this time, the metal housing is located on one side of the laser sensor 63. The laser sensor 63 continuously emits a laser beam towards the arc side of the metal housing. If there is no gap in the irradiated surface, the laser will be reflected along a fixed path and received by the photosensitive element in the sensor at a fixed position. If there is a gap, the laser will irradiate the edge or bottom of the gap, and the reflection path will change, causing the receiving position on the photosensitive element to shift, thereby locating the gap position. The signal data received by the laser sensor 63 will be fed back to the control console 2. When a gap is detected, the control console 2 controls the motor 48 to stop working, so that the height of the gap is the same as the height of the welding head 62 and the grinding head 54, which facilitates subsequent welding and grinding. Subsequently, console 2 starts cylinder 41. Cylinder 41 uses a push rod to drive the arc-shaped top pressure plate 42 to abut against the top surface of the metal shell, thereby fixing it in place and preventing the subsequent shaking of the metal shell from causing deviations in welding and grinding, thus improving product quality. Subsequently, console 2 starts servo motor 35, which acts on base plate 34 through lead screw 36. Under the push of helical force, base plate 34 slides in slide groove 37, thereby driving slide plate 31 above to slide in side slide rail 11. Slide plate 31 drives metal shell on it to move towards welding assembly 6. When the edge of metal shell moves to the horizontal position of welding head 62, electric telescopic rod 64 pushes welding head 62 close to the gap to start welding. At the same time, laser sensor 63 on one side of welding head 62 uses the same principle to detect the solder excess height data information at the welding point and feeds it back to console 2 in real time. After the metal shell seam welding is completed, the servo motor 35 continues to start, driving it to the vicinity of the grinding head 54. Then, the rotary motor 57 drives the lead screw 56 to move the push plate 55 forward, which in turn drives the grinding head 54 on the grinding motor 52 to grind the weld. The control console 2 uses the solder excess height data information transmitted back by the laser sensor 63 to precisely control the number of rotations of the rotary motor 57. When the grinding head 54 comes into contact with the weld, the pressure sensor 53 collects the pressure data of the grinding head 54 and feeds it back to the control console 2, so that the weld with a larger excess height corresponds to a larger grinding pressure, thereby realizing automatic adjustment of grinding pressure, avoiding over-grinding or under-grinding, realizing the coordinated work of welding and grinding, and greatly improving product quality.

[0048] When further improvements in welding and grinding precision are required, an optimization component 9 is added to the back plate 13. Before welding, the control console 2 first activates the infrared preheating lamp 92 to irradiate and heat the weld seam, avoiding excessively low temperatures in the weld seam area before welding, which could cause welding stress, deformation, and cracking of the welded parts, thus ensuring product quality. After the metal shell is welded, the control console 2 controls the solenoid valve 94 to open, and the low-temperature gas in the low-temperature storage tank 95 is sprayed out through the high-pressure cold air nozzle 93 to cool the weld seam area, ensuring that the weld seam temperature does not become too high during grinding. At the same time, the feedback regulation of the solenoid valve 94 and the pressure sensor 53 are linked. When the grinding pressure increases, the control console 2 automatically increases the opening of the solenoid valve 94 to improve the cooling effect, thereby avoiding excessively high weld seam temperature during grinding, which could lead to weld seam oxidation and rapid damage to the grinding head, thus improving product quality.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automated production line for the metal casing of a three-roll plate rolling machine, comprising a side frame (1) and a control console (2) disposed on one side of the side frame (1), characterized in that: It also includes a conveying assembly (3), a positioning assembly (4), a dynamic grinding assembly (5), a welding assembly (6), a feeding assembly (7), and a plate rolling machine assembly (8), wherein: The side frame (1) includes two sets of symmetrically arranged side slide rails (11). The bottom of the side slide rail (11) is fixed to the bottom surface by a support rod (12), and the side of the side slide rail (11) is fixed with a back plate (13) by bolts. The conveying assembly (3) includes a slide plate (31), a front plate (32), a fixed vertical plate (33), a base plate (34), a servo motor (35), a lead screw (36), and a slide groove (37). The slide plates (31) are arranged symmetrically on the top and bottom. The fixed vertical plate (33) is fixed between the slide plates (31) by screws. The lead screw (36) passes through the base plate (34) and rotates in a spiral manner. One end of the servo motor (35) is welded to the lead screw (36). The bottom end of the slide plate (31) is welded to the upper end of the base plate (34). The positioning component (4) includes a cylinder (41), a top pressure plate (42), a wheel plate (43), a guide wheel (44), a concentric shaft (45), a pulley (46), a belt (47), and a motor (48). The pulley (46) is welded to the concentric shaft (45) and the motor (48) respectively, and the belt (47) is nested on the outside of the pulley (46).

2. The automated production line for metal casing of a three-roll plate rolling machine according to claim 1, characterized in that: The slide plate (31) is fitted with the side slide rail (11) at both ends and slides together. The front plate (32) is welded to the slide plate (31) located below. The bottom plate (34) is fitted with the slide groove (37) at the bottom end and slides together. The servo motor (35) is electrically connected to the control console (2).

3. The automated production line for metal casing of a three-roll plate rolling machine according to claim 2, characterized in that: The cylinder (41) is fixed to the slide plate (31) located above by bolts. The top pressure plate (42) is welded to one end of the cylinder (41). The top pressure plate (42) has an arc-shaped structure. The wheel plate (43) is welded to the slide plate (31) and is symmetrically arranged on both sides of the front plate (32). The concentric shaft (45) is fitted into the wheel plate (43) and slides. The guide wheel (44) is symmetrically welded to the concentric shaft (45). The motor (48) is electrically connected to the control console (2).

4. The automated production line for metal casing of a three-roll plate rolling machine according to claim 3, characterized in that: The dynamic polishing assembly (5) includes an L-shaped side plate (51), which is fixed to the inside of the back plate (13) by bolts. The bottom surface of the L-shaped side plate (51) is fitted with a polishing motor (52) and slides in fit. One end of the polishing motor (52) is connected to the polishing head (54) through a pressure sensor (53), and the pressure sensor (53) is electrically connected to the control console (2).

5. The automated production line for metal casing of a three-roll plate rolling machine according to claim 4, characterized in that: A push plate (55) is welded to one side of the grinding motor (52). The push plate (55) is penetrated by a lead screw (56) and rotates in a spiral manner. One end of the lead screw (56) is welded to one end of a rotary motor (57) through a back plate (13). The rotary motor (57) is fixed to the back plate (13) by screws.

6. The automated production line for metal casing of a three-roll plate rolling machine according to claim 5, characterized in that: The welding assembly (6) includes a fixed frame (61), which is fixed to the back plate (13) by screws. The fixed frame (61) fits into the welding head (62) and slides in fit. Laser sensors (63) are respectively provided at the same height on both sides of the welding head (62). One end of the welding head (62) is fixedly connected to an electric telescopic rod (64). The laser sensor (63) and the electric telescopic rod (64) are electrically connected to the control console (2).

7. The automated production line for metal casing of a three-roll plate bending machine according to claim 1, characterized in that: The feeding assembly (7) includes a support plate (71), on which a pressure plate (72) is fixed. Several sliding rollers (73) are equidistantly fitted on the top surface of the pressure plate (72) and rotate in cooperation. Fixed columns (74) are symmetrically arranged on both sides of the pressure plate (72). Traction rollers (75) are fitted between the fixed columns (74) and rotate in cooperation. One end of the traction roller (75) is connected to a traction motor (76), and the traction motor (76) is fixed to one side of the fixed column (74) by screws.

8. The automated production line for metal casing of a three-roll plate bending machine according to claim 1, characterized in that: The plate rolling machine assembly (8) includes a machine body (81), an active roller (82) is provided on the machine body (81), and auxiliary rollers (83) are symmetrically provided below the active roller (82). One end of the active roller (82) is connected to the plate rolling motor (84), and the other end is fitted with a support bearing (85). The bottom end of the support bearing (85) is fitted with the machine body (81) and rotates in cooperation. One side of the support bearing (85) is connected to one end of the oil cylinder (86).

9. An automated production line for metal casing of a three-roll plate rolling machine according to claim 8, characterized in that: The machine body (81) is equipped with a rotating motor (87), one end of which is connected to a screw rod (88). The screw rod (88) is fitted into the feeding push plate (89) and rotates in a spiral manner. Both ends of the feeding push plate (89) are penetrated by guide rods (891) and slide in a sliding manner. The guide rods (891) are welded to the machine body (81).

10. An automated production line for the metal casing of a three-roll plate rolling machine according to claim 1, characterized in that: An optimization component (9) is added to the back plate (13). The optimization component (9) includes a preheating tank (91). The preheating tank (91) is fixed to the back plate (13) by bolts and is located behind one of the laser sensors (63). An infrared preheating lamp (92) is provided inside the preheating tank (91). The infrared preheating lamp (92) is at the same height as the laser sensor (63). A high-pressure cold air nozzle (93) is installed on the back plate (13) in front of the dynamic grinding component (5). The high-pressure cold air nozzle (93) is connected to a solenoid valve (94) through a pipe. The solenoid valve (94) is connected to a low-temperature gas storage tank (95) through a conduit. The solenoid valve (94) is electrically connected to the control console (2).

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