A duct manufacturing production line and a manufacturing method thereof

Abstract

This application relates to a duct manufacturing production line and its manufacturing method, belonging to the field of duct manufacturing technology. The duct manufacturing production line includes a bending and rolling device, a welding device, and a grinding device arranged sequentially, and also includes a cleaning device. The cleaning device includes a cleaning tank, a liquid storage tank, a liquid pump, a liquid outlet pipe, a placement plate, and a rotating component. The liquid storage tank is disposed on the side wall of the cleaning tank, the liquid pump is disposed inside the liquid storage tank, the liquid outlet pipe is disposed at the water outlet end of the liquid pump, the liquid outlet pipe is connected to the side wall of the cleaning tank and communicates with the interior of the cleaning tank, the placement plate is rotatably connected to the bottom wall of the cleaning tank, and the rotating component is disposed inside the cleaning tank to drive the placement plate to rotate. This application has the effect of improving the work efficiency of workers.

Description

Technical Field

[0001] This application relates to the field of duct manufacturing technology, and in particular to a duct manufacturing production line and manufacturing method thereof. Background Technology

[0002] Air ducts are generally formed from galvanized coils through a series of processing steps. Air ducts are pipeline systems used for air transport and distribution and are widely used in various industrial operations.

[0003] The relevant technology sets up a duct manufacturing production line, including a bending and rolling equipment, a welding gun, a grinding disc, and a cleaning equipment arranged in sequence. The cleaning equipment includes a cleaning box and a cleaning rod. In use, the galvanized coil is first rolled into a cylinder by the bending and rolling equipment; then, the ends of several cylinders are welded by the welding gun to initially form a duct; then, the weld seams of the initially formed duct are ground by the grinding disc; finally, while rotating the ground duct by hand, the cleaning rod is held and dipped in the cleaning solution in the cleaning box to clean the weld seams of the ground duct, thereby producing the duct.

[0004] Regarding the aforementioned technologies, the inventors believe that when workers clean the polished ducts, they need to hold a cleaning rod soaked in cleaning solution in one hand and hold the duct in the other. This operation makes the work steps required for processing a single duct quite complicated, resulting in a long processing time for a single duct. Therefore, the processing efficiency of a single duct is low and needs to be improved. Summary of the Invention

[0005] To improve the processing efficiency of workers on individual ducts, this application provides a duct manufacturing production line and its manufacturing method.

[0006] Firstly, the duct manufacturing production line provided in this application adopts the following technical solution:

[0007] A duct manufacturing production line includes a bending and rolling device, a welding device, and a grinding device arranged sequentially, and also includes a cleaning device. The cleaning device includes a cleaning tank, a liquid storage tank, a liquid pump, a liquid outlet pipe, a placement plate, and a rotating component. The liquid storage tank is disposed on the side wall of the cleaning tank, the liquid pump is disposed inside the liquid storage tank, the liquid outlet pipe is disposed at the water outlet end of the liquid pump, the liquid outlet pipe is connected to the side wall of the cleaning tank and communicates with the interior of the cleaning tank, the placement plate is rotatably connected to the bottom wall of the cleaning tank, and the rotating component is disposed inside the cleaning tank to drive the placement plate to rotate.

[0008] By adopting the above technical solution, the workers place the welded air duct on the upper surface of the placement plate, then drive the placement plate to rotate through the rotating component, and finally spray the cleaning fluid inside the storage tank onto the side wall of the air duct through the liquid outlet pipe, thereby cleaning the side wall of the air duct. The above operation does not require the workers to manually clean the side wall of the air duct, effectively improving the processing efficiency of the workers for a single pipe.

[0009] Preferably, the nozzle is located at the end of the liquid outlet pipe away from the liquid pump.

[0010] By adopting the above technical solution and setting the nozzle, the spray range of the cleaning fluid sprayed onto the side wall of the air duct is expanded, thereby improving the cleaning effect of the cleaning equipment on the air duct.

[0011] Preferably, the upper surface of the placement plate is provided with a positioning rod for embedding inside the air duct.

[0012] By adopting the above technical solution, when the air duct is placed inside the cleaning box for cleaning, the air duct is sleeved on the side wall of the positioning rod, thereby improving the stability of the air duct on the placement plate when the placement plate rotates.

[0013] Preferably, the positioning rod has a clearance cavity inside, and a motor is installed on the inner wall of the clearance cavity. The output end of the motor is connected to a mounting rod, and both ends of the mounting rod are rotatably connected to connecting rods. The ends of the two connecting rods away from the mounting rods are rotatably connected to clamping plates. Moving holes for the clamping plates to move are opened through both sides of the inner wall of the clearance cavity. A first dovetail block is provided on the side of the two clamping plates near the placement plate. A first dovetail groove for the first dovetail block to move is opened on the upper surface of the placement plate in the horizontal direction.

[0014] By adopting the above technical solution, the motor drives the mounting rod to rotate, which in turn causes the two connecting rods to rotate, thereby moving the clamping plate. This causes the clamping plate to abut against the inner wall of the duct, improving the stability of the duct fitted onto the side wall of the positioning rod and further enhancing the stability of the duct on the placement plate.

[0015] Preferably, flexible pads are provided on the opposite sides of the two clamping plates.

[0016] By adopting the above technical solution, the flexible pad reduces the wear caused by the clamping plate directly contacting the inner wall of the duct, and extends the service life of the clamping plate.

[0017] Preferably, the outer wall of the cleaning tank is provided with a support frame, the upper surface of the support frame is provided with a return water pump, the inlet end of the return water pump is connected to a telescopic pipe, the end of the telescopic pipe away from the return water pump is connected to the side wall of the cleaning tank and communicates with the interior of the cleaning tank, the output end of the return water pump is provided with a spray pipe, the liquid outlet end of the spray pipe is located on the upper side of the cleaning tank, and the outer wall of the cleaning tank is provided with a lifting component for driving the support frame to move in the vertical direction.

[0018] By adopting the above technical solution, when there is excess cleaning fluid remaining inside the cleaning tank, the excess cleaning fluid is extracted from the cleaning tank by the return water pump and then sprayed onto the air duct to be cleaned inside the cleaning tank through the spray pipe. This not only reduces the waste of cleaning fluid, but also improves the cleaning effect on the surface of the air duct.

[0019] Preferably, a connecting frame plate is provided on the lower side of the spray pipe, a sponge is provided on the side of the connecting frame plate away from the cleaning tank, a pressure frame plate is provided on the upper side of the sponge, a reciprocating component is provided on the support frame to drive the connecting frame plate to reciprocate in the horizontal direction, and a driving component is provided on the support frame to drive the pressure frame plate to reciprocate in the vertical direction.

[0020] By adopting the above technical solution, the reciprocating component drives the connecting frame plate to move horizontally, so that the sponge can fully absorb the cleaning liquid flowing out of the spray pipe. The driving component drives the pressure frame plate to move vertically, thereby squeezing the sponge that has absorbed the cleaning liquid, so that the cleaning liquid in the sponge falls into the interior of the cleaning tank, thereby increasing the spraying range of the cleaning liquid flowing out of the spray pipe.

[0021] Preferably, the reciprocating component includes a reciprocating motor, a connecting rod, a sliding block, a positioning sleeve, and an auxiliary frame. The reciprocating motor is disposed on the side wall of the support frame, the connecting rod is disposed at the output end of the reciprocating motor, the sliding block is disposed at the end of the connecting rod away from the reciprocating motor, the sliding block is rotatably connected to the inside of the positioning sleeve, the positioning sleeve is disposed on the side wall of the connecting frame plate, the auxiliary frame is disposed on the side wall of the support frame, and the connecting frame plate is slidably connected to the inside of the auxiliary frame.

[0022] By adopting the above technical solution, the reciprocating motor drives the sliding block to move along the inside of the positioning sleeve through the connecting rod, thereby driving the connecting frame to move back and forth horizontally along the inside of the auxiliary frame, thus driving the sponge to move back and forth horizontally, so that the sponge can fully absorb the cleaning fluid after circulation.

[0023] Preferably, the driving component includes a driving rod, a driving ring, a driving rack, a second dovetail block, a mounting ring, a limiting plate, a driving spring, a connecting member, and a driving gear block. The driving ring is disposed on the side wall of the reciprocating motor, and the driving rack meshes with the driving ring. The second dovetail block is disposed on the side wall of the driving rack. The side wall of the support frame has a second dovetail groove in the vertical direction for the second dovetail block to slide. The mounting ring is disposed on the side wall of the support frame, and the end of the driving rack passes through the side wall of the mounting ring. The limiting plate is disposed on the driving... The drive spring is sleeved on the side wall of the drive rack, one end of the drive spring is connected to the side wall of the mounting ring, and the other end of the drive spring is mounted on the side wall of the limiting plate; the drive tooth block is disposed on the side wall of the drive ring; when the drive tooth block and the drive rack mesh with each other, the drive rack moves away from the connecting frame plate, so that the drive spring is compressed; when the drive tooth block and the drive rack disengage, the drive spring rebounds, so that the drive rack moves closer to the connecting frame plate.

[0024] By adopting the above technical solution, the reciprocating motor synchronously drives the drive ring to rotate. When the drive tooth block and the drive rack mesh with each other, the drive rack moves away from the connecting frame plate, and the drive spring is compressed. When the drive tooth block and the drive rack disengage, the elastic force of the drive spring drives the drive rack to move closer to the connecting frame plate, so that the pressure frame plate moves towards the connecting frame plate, thereby squeezing the sponge.

[0025] On the other hand, this application discloses a manufacturing method used in a duct manufacturing production line as described in the first aspect, comprising the following steps:

[0026] Bending and rolling: Using bending and rolling equipment to roll galvanized coils into cylinders;

[0027] Welding: The ends of several rolls are welded using welding equipment to initially form a duct.

[0028] Grinding: The welded joints of the initially formed air duct are ground using grinding equipment;

[0029] Cleaning: Place the polished air duct inside the cleaning box, so that the end of the polished air duct abuts against the upper surface of the placement plate. Then, drive the placement plate to rotate through the rotating component, so that the polished air duct placed on the placement plate rotates. Finally, use the liquid pump to draw out the cleaning liquid inside the storage tank, so that the cleaning liquid can clean the side wall of the polished air duct through the liquid outlet pipe.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. The worker places the welded air duct on the upper surface of the placement plate, then drives the placement plate to rotate through the rotating component. Finally, the cleaning fluid inside the liquid storage tank is sprayed onto the side wall of the air duct through the liquid outlet pipe, thereby cleaning the side wall of the air duct. The above operation eliminates the need for workers to manually clean the side wall of the air duct, effectively improving the processing efficiency of individual air ducts.

[0032] 2. The motor drives the mounting rod to rotate, which in turn causes the two connecting rods to rotate, thereby causing the clamping plate to rotate. This causes the clamping plate to abut against the inner wall of the duct, improving the stability of the duct fitted onto the side wall of the positioning rod and further enhancing the stability of the duct on the placement plate. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of a duct manufacturing production line according to an embodiment of this application.

[0034] Figure 2 This is a cross-sectional view of an embodiment of the present application used to illustrate the internal structure of the cleaning tank.

[0035] Figure 3 This is an exploded view of an embodiment of the present application used to illustrate the placement plate structure.

[0036] Figure 4 This is a cross-sectional view used in the embodiments of this application to illustrate the structure of the reciprocating component.

[0037] Figure 5 This is a cross-sectional view used in the embodiments of this application to illustrate the structure of the driving component.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Bending and rolling equipment; 11. Feeding component; 12. Rolled component; 13. Unloading component; 2. Cleaning equipment; 21. Cleaning tank; 22. Liquid storage tank; 23. Liquid pump; 24. Liquid outlet pipe; 241. Nozzle; 25. Placement plate; 26. Rotating component; 3. Positioning rod; 31. Relief cavity; 32. Motor mounting; 33. Mounting rod; 34. Connecting rod; 35. Clamping plate; 351. First dovetail block; 352. Flexible pad; 36. Moving hole; 37. First dovetail groove; 4. Support frame; 41. Return water pump; 411. 412. Telescopic pipe; 42. Spray pipe; 43. Lifting component; 44. Connecting frame plate; 45. Sponge; 46. Pressure frame plate; 47. Second dovetail groove; 5. Reciprocating component; 58. Reciprocating motor; 59. Connecting rod; 50. Sliding block; 50. Positioning sleeve; 61. Auxiliary frame; 62. Driving component; 63. Driving rod; 64. Driving rack; 65. Second dovetail block; 66. Mounting ring; 67. Limiting plate; 68. Driving spring; 69. Connecting component; 60. Pulley; 61. Belt; 62. Belt; 60. Driving gear block. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0041] Example 1

[0042] Embodiment 1 of this application discloses a duct manufacturing production line. (Refer to...) Figure 1 The duct manufacturing production line includes bending and rolling equipment 1, welding equipment, grinding equipment and cleaning equipment 2, which are arranged in sequence.

[0043] Reference Figure 1 The bending and rolling equipment 1 includes a feeding component 11, a rolling component 12, and an unloading component 13. The feeding component 11 includes a frame, a feeding cylinder, an air pump, several suction cups, a transport frame, a moving motor, a moving lead screw, and a moving block. The feeding cylinder is located on the side wall of the frame. The air pump is bolted to the output end of the feeding cylinder. The output end of the air pump is connected to several suction cups through pipes. In this embodiment, six suction cups are provided. The transport frame is located below the suction cups. A transport hole is provided on the side of the frame near the transport frame. The moving motor is bolted to the inner wall of the transport hole. The output end of the moving motor is connected to the moving lead screw. The moving block is threaded to the side wall of the moving lead screw and welded to the side wall of the feeding cylinder.

[0044] Reference Figure 1 The rolling part 12 is a rolling machine, and the unloading part 13 includes an unloading platform, which is located on the side of the frame away from the transport frame.

[0045] Reference Figure 1 The workers place the galvanized coil on the upper surface of the transport frame, and then push the transport frame under the suction cup with manual force. Next, the suction cup is moved to the upper surface of the galvanized coil by the feeding cylinder, and then the galvanized coil is adsorbed on the suction cup by the air pump. Then, the lead screw is driven by the moving motor to rotate, so that the moving block moves along the inner wall of the transport hole, thereby moving the galvanized coil to the rolling part 12, so that the rolling part 12 rolls the galvanized coil into a cylinder. Finally, the unloading part 13 removes the cylinder from the bending and rolling equipment 1.

[0046] Reference Figure 1 In this embodiment of the application, the welding equipment is a welding gun, and the grinding equipment is a grinding disc.

[0047] Reference Figure 2The cleaning equipment 2 includes a cleaning tank 21, a storage tank 22, a pump 23, an outlet pipe 24, a placement plate 25, and a rotating component 26. The storage tank 22 is welded to the side wall of the cleaning tank 21 and is used to store the cleaning solution. In this embodiment, the cleaning solution is VCI-602 stainless steel cleaner. The pump 23 is bolted to the inner bottom wall of the storage tank 22. The outlet pipe 24 is connected to the outlet end of the pump 23 by a clamp and is connected to the side wall of the cleaning tank 21, communicating with the interior of the cleaning tank 21. A nozzle 24 is welded to the end of the outlet pipe 24 away from the pump 23. The placement plate 25 is rotatably connected to the bottom wall of the cleaning tank 21. The rotating component 26 is disposed on the bottom wall of the cleaning tank 21 to drive the placement plate 25 to rotate. In this embodiment, the rotating component 26 is a rotating motor, which is bolted to the inner bottom wall of the cleaning tank 21. The output end of the rotating motor is connected to the lower surface of the placement plate 25.

[0048] Reference Figure 2 When the staff places the air duct on the upper surface of the placement plate 25, the placement plate 25 is rotated by the rotating part 26, and the cleaning fluid inside the storage tank 22 is drawn by the liquid pump 23 so that the cleaning fluid is sprayed out from the nozzle 241. This sprays the side of the air duct near the nozzle 241, so that the outer wall of the air duct is sprayed with cleaning fluid. This eliminates the need for the staff to manually clean the side wall of the air duct, effectively improving the processing efficiency of a single pipe.

[0049] Reference Figure 2 and Figure 3 A positioning rod 3 is welded to the upper surface of the placement plate 25. A clearance cavity 31 is formed inside the positioning rod 3. A mounting motor 32 is bolted to the top wall of the clearance cavity 31. A mounting rod 33 is connected to the output end of the mounting motor 32. Connecting rods 34 are rotatably connected to both ends of the mounting rod 33. Clamping plates 35 are rotatably connected to the ends of the two connecting rods 34 away from the mounting rod 33. A flexible pad 352, which can be made of rubber, is glued to the end of the clamping plate 35 away from the mounting rod 33. Moving holes 36 for the clamping plates 35 are formed through the inner walls of the clearance cavity 31 on both sides. A first dovetail block 351 is welded to the side of each clamping plate 35 closest to the placement plate 25. A first dovetail groove 37 for the first dovetail block 351 is formed horizontally on the upper surface of the placement plate 25.

[0050] Reference Figure 2 and Figure 3When the staff needs to clean the air duct, the air duct opening is fitted onto the side wall of the positioning rod 3, and then the mounting rod 33 is driven to rotate by the mounting motor 32, so that the two connecting rods 34 rotate; thereby, the two clamping plates 35 move along the inner wall of the first dovetail groove 37 under the limiting action of the first dovetail block 351, until the flexible pads 352 on the side walls of the two clamping plates 35 are both in contact with the inner wall of the air duct, thereby improving the stability of the air duct when the rotating part 26 drives the air duct to rotate.

[0051] Reference Figure 4 The outer wall of the cleaning tank 21 is provided with a lifting component 42. In this embodiment, the lifting component 42 is a driving cylinder. The driving cylinder is connected to the outer wall of the cleaning tank 21 by bolts. One end of the piston rod of the driving cylinder is welded to a support frame 4. The upper surface of the support frame 4 is connected to a return water pump 41 by bolts. The water inlet end of the return water pump 41 is glued to a telescopic pipe 411. In this embodiment, the telescopic pipe 411 is a corrugated hose. The end of the telescopic pipe 411 away from the return water pump 41 is glued to the side wall of the cleaning tank 21 and communicates with the interior of the cleaning tank 21. The output end of the return water pump 41 is clamped to a spray pipe 412. The outlet of the spray pipe 412 faces the upper side of the cleaning tank 21. After the nozzle 241 sprays the air duct, the excess cleaning liquid accumulates to a certain volume on the inner wall of the cleaning tank 21. Then, the lifting component 42 moves the spray pipe 412 toward the side near the opening of the cleaning tank 21 to reduce the possibility of the cleaning liquid sprayed by the spray pipe 412 spraying toward the outside of the cleaning tank 21. Then, the return water pump 41 extracts the residual cleaning liquid inside the cleaning tank 21 so that the spray pipe 412 sprays toward the upper side of the air duct. The above operation not only reduces the waste of the spray pipe 412, but also improves the cleaning effect on the surface of the air duct.

[0052] Reference Figure 4 The support frame 4 is provided with a reciprocating component 5, which includes a reciprocating motor 51, a connecting rod 52, a sliding block 53, a positioning sleeve 54, and an auxiliary frame 55. The reciprocating motor 51 is bolted to the outer wall of the support frame 4. The connecting rod 52 is welded to the output end of the reciprocating motor 51. The sliding block 53 is rotatably connected to the end of the connecting rod 52 away from the reciprocating motor 51. The sliding block 53 is slidably connected to the inside of the positioning sleeve 54. The auxiliary frame 55 is welded to the side wall of the support frame 4. A connecting frame plate 43 is slidably connected inside the auxiliary frame 55. The connecting frame plate 43 is welded to the side wall of the positioning sleeve 54. The side of the connecting frame plate 43 away from the cleaning tank 21 is glued with a sponge 431.

[0053] Reference Figure 4 and Figure 5A drive component 6 is provided on the support frame 4. The drive component 6 includes a drive rod 61, a drive ring 62, a drive rack 63, a second dovetail block 64, a mounting ring 65, a limiting plate 66, a drive spring 67, a connecting component 68, and a drive gear block 69. The drive rod 6 is rotatably connected to the side wall of the support frame 4 through a bearing seat. The drive ring 62 is welded and sleeved on the side wall of the drive rod 61. The second dovetail block 64 is welded to the side of the drive rack 63 near the support frame 4. The side wall of the support frame 4 has a second dovetail groove 45 in the vertical direction for the second dovetail block 64 to slide. The mounting ring 65 is welded to the side wall of the support frame 4. The end of the drive rack 63 passes through the side wall of the mounting ring 65. The limiting plate 66 is welded to the end of the drive rack 63. The drive spring 67 is sleeved on the side wall of the drive rack 63. One end of the drive spring 67 is welded to the side wall of the mounting ring 65, and the other end of the drive spring 67 is welded to the side wall of the limiting plate 66. A pressure plate 44 is welded to the side wall of the drive rack 63, and the pressure plate 44 is located on the upper side of the sponge 431.

[0054] Reference Figure 4 The connecting member 68 is used to connect the drive rod 61 and the output end of the reciprocating motor 51. The connecting member 68 includes two pulleys 681 and a belt 682. One pulley 681 is welded and sleeved on the side wall of the drive rod 61, and the other pulley 681 is welded and sleeved on the output end of the reciprocating motor 51. The belt 682 is sleeved on the two pulleys 681. The drive tooth block 69 is welded to the side wall of the drive ring 62. When the drive tooth block 69 and the drive rack 63 mesh with each other, the drive rack 63 moves toward the side away from the connecting frame plate 43 so that the drive spring 67 is compressed. When the drive tooth block 69 and the drive rack 63 disengage, the drive spring 67 rebounds so that the drive rack 63 moves toward the side closer to the connecting frame plate 43.

[0055] Reference Figure 4 This allows the operator to start the reciprocating motor 51, causing the sliding block 53 to move inside the positioning sleeve 54. At this time, the positioning sleeve 54 moves horizontally, thereby driving the connecting frame plate 43 to reciprocate along the inside of the auxiliary frame 55. The connecting frame plate 43 drives the sponge 431 to move horizontally in sync, so that the sponge 431 can fully absorb the cleaning liquid sprayed by the spray pipe 412 and filter the impurities in the recovered cleaning liquid through the sponge 431.

[0056] Reference Figure 4When the reciprocating motor 51 starts, it drives the drive rod 61 to rotate through the linkage 68. When the drive tooth block 69 and the drive rack 63 mesh, the drive rack 63 drives the pressure plate 44 to move away from the sponge 431, at which time the drive spring 67 is compressed. When the drive tooth block 69 and the drive rack 63 disengage, the elastic force of the drive spring 67 drives the pressure plate 44 to move away from the sponge 431, so as to squeeze the sponge 431 through the pressure plate 44, thereby causing the cleaning liquid of the sponge 431 to drip from the upper side of the air duct onto the side wall of the air duct, thereby improving the cleaning effect of the side wall of the air duct.

[0057] Embodiment 1 of this application discloses the implementation principle of a duct manufacturing production line as follows: firstly, steel is bent and rolled into a cylinder by a bending and rolling equipment 1, then the ends of several cylinders are welded by a welding equipment to form a preliminary duct, then the welded joints of the preliminary duct are ground by a grinding equipment, and finally the ground duct is cleaned by a cleaning equipment 2.

[0058] When cleaning the polished duct, the duct is first placed inside the cleaning box 21 so that it fits against the side wall of the positioning rod 3. Then, the mounting rod 33 is rotated by the mounting motor 32 so that the flexible pads 352 on the clamping plates 35 corresponding to the two connecting rods 34 abut against the inner wall of the duct. Then, the rotating part 26 rotates through the placement plate 25 so that the cleaning fluid sprayed from the nozzle 241 cleans the side wall of the duct, thereby improving the processing efficiency of the workers for a single duct.

[0059] When a significant amount of cleaning fluid remains inside the cleaning tank 21, the reciprocating motor 51 is activated, causing the sliding block 53 to move inside the positioning sleeve 54. The positioning sleeve 54 drives the drive connecting frame plate 43 to reciprocate along the interior of the auxiliary frame 55, allowing the sponge 431 to fully absorb the cleaning fluid sprayed by the spray pipe 412 and filter impurities in the recovered cleaning fluid through the sponge 431. The reciprocating motor 51 drives the drive rod 61 to rotate via the belt 682 and pulley 681. When the drive tooth block 69 and drive rack 63 mesh, the drive rack 63 drives the pressure frame plate 44 to move away from the sponge 431, at which point the drive spring 67 is compressed. When the drive tooth block 69 and drive rack 63 disengage, the elastic force of the drive spring 67 drives the pressure frame plate 44 to move away from the sponge 431, squeezing the sponge 431 through the pressure frame plate 44, causing the cleaning fluid in the sponge 431 to fall into the cleaning tank 21, thereby expanding the cleaning effect on the side wall of the air duct.

[0060] Example 2

[0061] This application, embodiment 2, discloses a manufacturing method for the duct manufacturing production line in embodiment 1, including the following steps:

[0062] S1. Bending and rolling: The galvanized coil is rolled into a cylinder using bending and rolling equipment 1.

[0063] S2, Weld: The ends of several rolls are welded using welding equipment to initially form the air duct;

[0064] S3. Grinding: Grind the welded joints of the initially formed air duct using grinding equipment;

[0065] S4. Cleaning: Place the polished air duct in the cleaning box 21, so that the end of the polished air duct abuts against the upper surface of the placement plate 25. Then, drive the placement plate 25 to rotate through the rotating component 26, so that the polished air duct placed on the placement plate 25 rotates. Finally, use the liquid pump 23 to extract the cleaning liquid inside the liquid storage tank 22, so that the cleaning liquid can clean the side wall of the polished air duct through the liquid outlet pipe 24.

[0066] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A duct manufacturing production line, comprising a bending and rolling device (1), a welding device, and a grinding device arranged sequentially, characterized in that: It also includes a cleaning device (2), which includes a cleaning tank (21), a liquid storage tank (22), a liquid pump (23), a liquid outlet pipe (24), a placement plate (25), and a rotating component (26). The liquid storage tank (22) is located on the side wall of the cleaning tank (21), the liquid pump (23) is located inside the liquid storage tank (22), the liquid outlet pipe (24) is located at the water outlet end of the liquid pump (23), the liquid outlet pipe (24) is connected to the side wall of the cleaning tank (21) and communicates with the inside of the cleaning tank (21), the placement plate (25) is rotatably connected to the bottom wall of the cleaning tank (21), and the rotating component (26) is located inside the cleaning tank (21) to drive the placement plate (25) to rotate. The upper surface of the placement plate (25) is provided with a positioning rod (3) for embedding inside the air duct; The positioning rod (3) has a clearance cavity (31) inside. The inner wall of the clearance cavity (31) is provided with a motor (32). The output end of the motor (32) is connected to a mounting rod (33). Both ends of the mounting rod (33) are rotatably connected to connecting rods (34). The ends of the two connecting rods (34) away from the mounting rod (33) are rotatably connected to clamping plates (35). The inner walls of the clearance cavity (31) are provided with moving holes (36) for the clamping plates (35) to move through. The two clamping plates (35) are provided with a first dovetail block (351) on the side near the placement plate (25). The upper surface of the placement plate (25) is provided with a first dovetail groove (37) for the first dovetail block (351) to move along the horizontal direction. The outer wall of the cleaning tank (21) is provided with a support frame (4), and the upper surface of the support frame (4) is provided with a return water pump (41). The inlet end of the return water pump (41) is connected to a telescopic pipe (411). The end of the telescopic pipe (411) away from the return water pump (41) is connected to the side wall of the cleaning tank (21) and communicates with the interior of the cleaning tank (21). The output end of the return water pump (41) is provided with a spray pipe (412). The outlet end of the spray pipe (412) is located on the upper side of the cleaning tank (21). The outer wall of the cleaning tank (21) is provided with a lifting component (42) for driving the support frame (4) to move in the vertical direction. A connecting frame plate (43) is provided on the lower side of the spray pipe (412). A sponge (431) is provided on the side of the connecting frame plate (43) away from the cleaning tank (21). A pressure frame plate (44) is provided on the upper side of the sponge (431). A reciprocating component (5) is provided on the support frame (4) to drive the connecting frame plate (43) to reciprocate in the horizontal direction. A driving component (6) is provided on the support frame (4) to drive the pressure frame plate (44) to reciprocate in the vertical direction. The reciprocating component (5) includes a reciprocating motor (51), a connecting rod (52), a sliding block (53), a positioning sleeve (54), and an auxiliary frame (55). The reciprocating motor (51) is disposed on the side wall of the support frame (4). The connecting rod (52) is disposed at the output end of the reciprocating motor (51). The sliding block (53) is rotatably connected to the end of the connecting rod (52) away from the reciprocating motor (51). The sliding block (53) is slidably connected to the inside of the positioning sleeve (54). The positioning sleeve (54) is disposed on the side wall of the connecting frame plate (43). The auxiliary frame (55) is disposed on the side wall of the support frame (4). The connecting frame plate (43) is slidably connected to the inside of the auxiliary frame (55). The driving component (6) includes a driving rod (61), a driving ring (62), a driving rack (63), a second dovetail block (64), a mounting ring (65), a limiting plate (66), a driving spring (67), a connecting member (68), and a driving rack (69). The driving ring (62) is disposed on the side wall of the reciprocating motor (51), the second dovetail block (64) is disposed on the side wall of the driving rack (63), the side wall of the support frame (4) has a second dovetail groove (45) for sliding of the second dovetail block (64) in the vertical direction, the mounting ring (65) is disposed on the side wall of the support frame (4), the end of the driving rack (63) passes through the side wall of the mounting ring (65), and the limiting plate (66) is disposed on the side wall of the driving rack (69). 3) The drive spring (67) is sleeved on the side wall of the drive rack (63). One end of the drive spring (67) is connected to the side wall of the mounting ring (65), and the other end of the drive spring (67) is installed on the side wall of the limiting plate (66). The drive tooth block (69) is set on the side wall of the drive ring (62). When the drive tooth block (69) and the drive rack (63) mesh with each other, the drive rack (63) moves away from the connecting frame plate (43) so that the drive spring (67) is compressed. When the drive tooth block (69) and the drive rack (63) disengage, the drive spring (67) rebounds so that the drive rack (63) moves towards the side closer to the connecting frame plate (43).

2. The duct manufacturing production line according to claim 1, characterized in that: The nozzle (241) is located at the end of the liquid outlet pipe (24) away from the liquid pump (23).

3. The duct manufacturing production line according to claim 1, characterized in that: Flexible pads (352) are provided on the opposite sides of the two clamping plates (35).

4. A manufacturing method used in the duct manufacturing production line as described in claim 1, characterized in that: Includes the following steps: Bending and rolling: Using bending and rolling equipment to roll galvanized coils into cylinders; Welding: The ends of several rolls are welded using welding equipment to initially form a duct. Grinding: The welded joints of the initially formed air duct are ground using grinding equipment; Cleaning: Place the polished air duct inside the cleaning box (21) so that the end of the polished air duct abuts against the upper surface of the placement plate (25). Then drive the placement plate (25) to rotate through the rotating part (26) so that the polished air duct placed on the placement plate (25) rotates. Finally, use the liquid pump (23) to extract the cleaning liquid inside the storage tank (22) so that the cleaning liquid can clean the side wall of the polished air duct through the liquid outlet pipe (24).

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