Cold-rolled sheet pickling production line and method

Abstract

The invention relates to the field of cold-rolled sheet pickling, in particular to a cold-rolled sheet pickling production line which comprises a pickling tank, and flushing mechanisms, liquid pushing mechanisms and driving motors which are symmetrically distributed left and right are mounted on the pickling tank. Moving mechanisms which are in one-to-one correspondence with the liquid pushing mechanisms and are used for driving the liquid pushing mechanisms to move left and right in a reciprocating manner are mounted on the inner wall of the pickling tank; and a plurality of ultrasonic transducers which are arranged in a matrix manner are mounted at the bottom of the pickling tank. A pickling solution is periodically pushed through the solution pushing plate, so that the pickling solution below the liquid conveying pipe is periodically reduced, the resistance of the pickling solution in the pickling tank to the sprayed pickling solution is reduced, the washing effect on a cold-rolled sheet is improved, the washing direction of the liquid conveying pipe can be continuously changed along with the flowing direction of the pickling solution, and the washing effect is improved. And the direction of the pickling solution sprayed by the liquid spraying nozzles is prevented from being opposite to the flowing direction of the pickling solution in the pickling tank, so that the pickling effect is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of cold-rolled thin plate pickling, in particular to a cold-rolled thin plate pickling production line and method. Background Art

[0002] The surface of cold-rolled thin plates has poor corrosion and rust resistance, especially in an environment with high temperature, high humidity, and a high content of acid, alkali, and salt. It is easy to corrode and rust. Once the cold-rolled thin plates are rusted and not treated, it will affect the mechanical properties and quality of use. Therefore, the cold-rolled thin plates need to be pickled for rust removal and rust prevention.

[0003] Turbulent pickling is a highly efficient pickling technology that improves pickling efficiency and quality by enhancing the fluidity of the pickling solution and its impact on the strip surface. During the pickling process of cold-rolled sheet, a flushing structure is installed above the steel plate to spray the pickling solution, and the pickling solution in the pickling tank is in a flowing state. When the flushing structure sprays the pickling solution onto the steel plate surface, the pickling solution flowing in the pickling tank will create a certain resistance to the sprayed pickling solution. In particular, when the pickling solution flows in the opposite direction of the spraying direction, the spraying pressure will be significantly reduced, resulting in insufficient impact force of the pickling solution, which affects the flushing effect on the rust and scale on the steel plate surface. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a cold-rolled thin plate pickling production line, including a pickling tank, on which a flushing mechanism, a liquid pushing mechanism and a driving motor are installed that are symmetrically distributed on the left and right. A moving mechanism corresponding to the liquid pushing mechanism and used to drive the liquid pushing mechanism to move back and forth left and right is installed on the inner wall of the pickling tank, and a plurality of ultrasonic transducers arranged in a matrix are installed at the bottom of the pickling tank.

[0005] The flushing mechanism includes a liquid infusion tube rotatably installed inside the pickling tank, a plurality of liquid spray nozzles equidistantly distributed front and back are installed on the lower side of the liquid infusion tube, and a swing component for driving the liquid infusion tube to swing left and right is installed on the pickling tank.

[0006] The liquid pushing mechanism includes a slide that is slidably installed on the inner wall of the pickling tank left and right and is symmetrically distributed front and back. A liquid pushing plate is rotatably connected between the front and rear slides for pushing the pickling liquid under the infusion tube. A rotating component that drives the liquid pushing plate to switch between horizontal and vertical states is installed inside the slide. A vibration component driven by the liquid pushing plate and used to vibrate the cold-rolled thin plate is installed on the liquid pushing plate.

[0007] In one possible implementation, the swing component includes a turntable 1 rotatably mounted on the front and rear outer walls of the pickling tank, a push rod fixedly connected to the side of the turntable 1 away from the center of the infusion tube, the push rod and the turntable 1 are not coaxial, the front and rear ends of the infusion tube are fixedly connected to the swing connecting rod after passing through the outside of the pickling tank, a through groove 1 is opened inside the swing connecting rod, and the push rod is slidably mounted in the corresponding through groove 1.

[0008] In one possible implementation, the push plate is located on the side of the infusion pipe close to the center of the pickling tank, and the side of the push plate close to the center of the pickling tank is fixedly connected to a guide arc block, and the bottom of the push plate is fixedly connected to a liquid flow guide plate symmetrically distributed front to back, and the end of the liquid flow guide plate close to the center of the push plate is bent in the direction away from the center of the pickling tank.

[0009] In one possible implementation, a slide groove corresponding to the slide seat is opened on the inner wall of the pickling tank, and the slide seat is installed in the corresponding slide groove for left and right sliding. The rotating component includes a rotating shaft 1 fixedly connected to the front and rear sides of the liquid pushing plate, and the rotating shaft 1 is rotatably installed inside the slide seat. The outside of the rotating shaft 1 is fixedly sleeved with a gear 1, and a rack 1 located above the rotating shaft 1 is installed on the slide for left and right sliding. The rack 1 is engaged with the gear 1, and a locking component for locking the slide and the rack 1 is installed on the rack 1.

[0010] In one possible implementation, the locking assembly includes a locking block that is slidably installed in the middle of rack one. The locking block is in an inverted T-shape and the top of its vertical section protrudes above rack one. A reset spring one is fixedly connected between the bottom of the horizontal section of the locking block and the inner wall of rack one. The inner top wall of the slide is provided with locking grooves that are symmetrically distributed on the left and right. The vertical section of the locking block is plugged into one of the locking grooves. An unlocking assembly for unlocking the locking block is also installed on rack one.

[0011] In one possible implementation, the unlocking assembly includes a pushing piece that is slidably installed left and right inside rack one and is symmetrically distributed left and right. The pushing piece is provided with an upward inclined surface at one end close to the locking block. The horizontal section of the locking block slides with the inclined surface of the pushing piece. The pushing piece is fixedly connected to a pressing block at one end away from the locking block. A return spring 2 located below the pushing piece is fixedly connected between the pressing block and the inner wall of rack one. The end of the pressing block away from the center of rack one protrudes to the outside of rack one.

[0012] In one possible implementation, two rows of brushes are fixedly connected to the side of the liquid pushing plate away from the center of the pickling tank. Several brushes in the same row are arranged equidistantly front to back and the spacing between adjacent brushes is equal to the length of the brush. The brushes in the upper and lower rows are distributed alternately front to back. When the liquid pushing plate is converted to a horizontal state, the bottom of the brush contacts the upper surface of the cold-rolled sheet.

[0013] The cam is secured to the rear of the drive shaft and has an L-shaped guide rail mounted on top of the drive shaft for sliding movement therethrough, the L-shaped guide rail being secured to the rear of the drive shaft for sliding movement therethrough.

[0014] In one possible implementation, the moving mechanism includes two rotating shafts rotatably connected to the front and rear inner walls of the pickling tank, one end of the rotating shaft close to the center of the liquid pushing plate is coaxially fixedly connected to a turntable 2, and the turntable 2 is rotatably installed on the inner wall of the pickling tank. The edge of the turntable 2 close to the center of the liquid pushing plate is rotatably connected to a connecting rod, and the end of the connecting rod away from the turntable 2 is rotatably connected to the corresponding slide.

[0015] In one possible implementation, the rear side of the drive motor output shaft is fixedly connected to the drive shaft via a coupling, and the front and rear ends of the drive shaft are both connected to the corresponding turntable 1 and shaft 2 via belts.

[0016] The beneficial effects of the present invention are as follows: 1. The present invention periodically pushes the pickling liquid through the liquid pushing plate, so that the pickling liquid under the infusion tube is periodically reduced, thereby reducing the resistance of the pickling liquid in the pickling tank to the sprayed pickling liquid, improving the flushing effect on the cold-rolled thin plate, and the flushing direction of the infusion tube will continuously change with the flow direction of the pickling liquid, avoiding the direction in which the pickling liquid is sprayed from the spray nozzle being opposite to the direction in which the pickling liquid flows in the pickling tank, further improving the pickling effect. At the same time, in the process of pushing the pickling liquid to flow, the liquid pushing plate will synchronously drive the vibration component to vibrate the cold-rolled thin plate, promote the separation of rust on the surface of the cold-rolled thin plate, and further improve the pickling effect.

[0017] 2. The present invention pushes the pickling liquid through the cooperation of the liquid pushing plate, the guide arc block, the liquid flow guide plate and the brush. The liquid pushing plate is converted to a vertical state when moving toward the center of the pickling tank. The push of the pickling liquid by the liquid pushing plate increases the fluidity of the pickling liquid and improves the pickling effect of the pickling liquid. At this time, the guide arc block and the liquid flow guide plate can guide the pickling liquid to rinse the upper and lower sides of the cold-rolled thin plate, further improving the pickling effect of the cold-rolled thin plate. The liquid pushing plate is converted to a horizontal state when moving away from the center of the pickling tank. At this time, the brush can brush the surface of the cold-rolled thin plate, further improving the rust removal effect of the cold-rolled thin plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the pickling tank of the present invention.

[0019] Figure 2 It is a partial cross-sectional view of the front side of the pickling tank of the present invention.

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the liquid pushing mechanism of the present invention.

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the flushing mechanism of the present invention.

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the liquid pushing plate of the present invention.

[0023] Figure 6 It is a front cross-sectional view of the slide of the present invention.

[0024] Figure 7 It is a schematic diagram of the three-dimensional structure of the vibration component of the present invention.

[0025] In the figure: 1. Pickling tank; 2. Flushing mechanism; 21. Infusion tube; 22. Liquid spray nozzle; 23. Swinging component; 231. Turntable 1; 232. Push rod; 233. Swinging connecting rod; 3. Liquid pushing mechanism; 31. Sliding seat; 32. Liquid pushing plate; 321. Guide arc block; 322. Liquid flow guide plate; 33. Rotating component; 331. Rotating shaft 1; 332. Gear 1; 333. Rack 1; 334. Locking assembly; 3341. Locking block; 3342. Return spring 1. 3343. Pushing member; 3344. Pressing block; 3345. Return spring 2; 3346. Locking slot; 34. Brush; 35. Vibrating component; 351. Rotating rod; 352. Deflection wheel; 353. L-shaped pull rod; 354. Return spring 3; 355. Vibrating impact block; 356. Gear 2; 357. Rack 2; 4. Moving mechanism; 41. Rotating shaft 2; 42. Turntable 2; 43. Connecting rod; 5. Driving motor; 51. Driving shaft; 6. Ultrasonic transducer. DETAILED DESCRIPTION

[0026] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described below, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] See also Figure 1 、 Figure 2 and Figure 3 A cold-rolled sheet pickling production line includes a pickling tank 1, on which are installed a flushing mechanism 2, a liquid pushing mechanism 3 and a driving motor 5 that are symmetrically distributed on the left and right. A moving mechanism 4 corresponding to the liquid pushing mechanism 3 and used to drive the liquid pushing mechanism 3 to move back and forth is installed on the inner wall of the pickling tank 1. A plurality of ultrasonic transducers 6 arranged in a matrix are installed at the bottom of the pickling tank 1. It should be noted that the left and right sides of the pickling tank 1 are provided with openings for the cold-rolled sheet to pass through. During the pickling process, different numbers of pickling tanks 1 can be set as needed. Multiple pickling tanks 1 are arranged equidistantly on the left and right, and overflow tanks need to be set between adjacent pickling tanks 1 to recover the pickling liquid overflowing from the openings.

[0028] Ultrasonic waves are emitted into the pickling tank 1 through the ultrasonic transducer 6. The pickling liquid in the pickling tank 1 and the cold-rolled sheet generate high-frequency vibrations. The ultrasonic waves cause cavitation bubbles to be generated in the pickling liquid. The microjets generated when the bubbles burst impact the oxide layer on the surface of the cold-rolled sheet, thereby improving the rust removal effect.

[0029] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The flushing mechanism 2 includes a liquid infusion tube 21 rotatably mounted within the pickling tank 1. A plurality of liquid spray nozzles 22 are mounted on the underside of the liquid infusion tube 21, spaced evenly from front to back. A swinging member 23 is mounted on the pickling tank 1 to drive the liquid infusion tube 21 to swing left and right. It should be noted that the liquid infusion tube 21 is connected to the existing pickling liquid supply mechanism, which continuously pumps the pickling liquid into the liquid infusion tube 21.

[0030] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 7The liquid pushing mechanism 3 includes a slide 31 which is slidably installed on the inner wall of the pickling tank 1 left and right and is symmetrically distributed front and back. The interior of the slide 31 is a hollow structure. A liquid pushing plate 32 for pushing the pickling liquid under the infusion tube 21 is rotatably connected between the front and rear slides 31. A rotating component 33 for driving the liquid pushing plate 32 to switch between horizontal and vertical states is installed inside the slide 31. A vibrating component 35 for vibrating the cold-rolled thin plate is installed on the liquid pushing plate 32.

[0031] See also Figure 1 、 Figure 3 and Figure 4 The swinging component 23 includes a turntable 231 rotatably mounted on the front and rear outer walls of the pickling tank 1. A push rod 232 is fixedly connected to the side of the turntable 231 away from the center of the infusion tube 21. The push rod 232 is not centered on the same axis as the turntable 231. The front and rear ends of the infusion tube 21 are fixedly connected to a swinging link 233 after passing through the outside of the pickling tank 1. A through groove 1 is opened inside the swinging link 233, and the push rod 232 is slidably mounted in the corresponding through groove 1.

[0032] The pickling liquid is transported to the liquid spray nozzle 22 through the infusion pipe 21 and sprayed out, so that the sprayed pickling liquid rinses the cold-rolled thin plate. At the same time, the driving motor 5 is used to drive the turntable 231 to rotate, and then the turntable 231 drives the push rod 232 to rotate continuously, so that the push rod 232 pushes the swing link 233 to swing back and forth continuously. During the swinging of the swing link 233, the push rod 232 will slide back and forth along the through groove 1, and the reciprocating swing of the swing link 233 is used to drive the infusion pipe 21 to rotate back and forth left and right, thereby continuously adjusting the direction of the pickling liquid sprayed by the spray nozzle 22 to avoid the pickling liquid flow direction always being opposite to the spraying direction, resulting in a decrease in the spray pressure, thereby improving the spray flushing effect.

[0033] See also Figure 1 、 Figure 3 、 Figure 5 and Figure 6 The liquid pushing plate 32 is located on the side of the infusion tube 21 close to the center of the pickling tank 1. The side of the liquid pushing plate 32 close to the center of the pickling tank 1 is fixedly connected to a guide arc block 321. The bottom of the liquid pushing plate 32 is fixedly connected to a liquid flow guide plate 322 symmetrically distributed front and back. The end of the liquid flow guide plate 322 close to the center of the liquid pushing plate 32 is bent in the direction away from the center of the pickling tank 1.

[0034] When the liquid pushing plate 32 moves toward the center of the pickling tank 1, the liquid pushing plate 32 can push the pickling liquid toward the center of the pickling tank 1. In a short period of time, the pickling liquid under the infusion tube 21 will become less, thereby reducing the resistance of the pickling liquid in the pickling tank to the ejected pickling liquid and improving the flushing effect on the cold-rolled thin plate.

[0035] When the liquid pushing plate 32 pushes the pickling liquid, the pushed pickling liquid will surge upward, and the guide arc block 321 is used to guide the surged pickling liquid so that the surged pickling liquid flips and falls toward the center of the pickling tank 1. The falling pickling liquid can impact the surface of the cold-rolled thin plate, thereby improving the pickling effect of the cold-rolled thin plate.

[0036] When pushing the pickling liquid, the liquid pushing plate 32 will drive the liquid flow guide plate 322 to move together, so that the liquid flow guide plate 322 pushes the pickling liquid on both sides of the cold-rolled sheet toward the center of the pickling tank 1. As the space away from the center of the pickling tank 1 increases, the pickling liquid pressure difference on the left and right sides of the liquid pushing plate 32 becomes larger, and part of the pickling liquid will flow from the bottom of the cold-rolled sheet away from the center of the pickling tank 1, thereby improving the pickling efficiency of the rust under the cold-rolled sheet.

[0037] See also Figure 3 、 Figure 5 and Figure 6 The inner wall of the pickling tank 1 is provided with a slide groove corresponding to the slide 31, and the slide 31 is slidably installed in the corresponding slide groove. The rotating component 33 includes a rotating shaft 331 fixedly connected to the front and rear sides of the liquid pushing plate 32, and the rotating shaft 331 is rotatably installed inside the slide 31. The outside of the rotating shaft 331 is fixedly sleeved with a gear 332. A rack 333 located above the rotating shaft 331 is slidably installed on the slide 31. The rack 333 is meshed with the gear 332, and a locking component 334 for locking the slide 31 and the rack 333 is installed on the rack 333.

[0038] See also Figure 5 、 Figure 6 and Figure 7 The locking assembly 334 includes a locking block 3341 that is slidably installed in the middle of the rack 333. The locking block 3341 is in an inverted T shape and the top of its vertical section protrudes above the rack 333. A return spring 3342 is fixedly connected between the bottom of the horizontal section of the locking block 3341 and the inner wall of the rack 333. The inner top wall of the slide 31 is provided with locking grooves 3346 symmetrically distributed on the left and right. The vertical section of the locking block 3341 is plugged into one of the locking grooves 3346. An unlocking assembly for unlocking the locking block 3341 is also installed on the rack 333.

[0039] See also Figure 5 、 Figure 6 and Figure 7The unlocking assembly includes a pushing piece 3343 that is slidably installed inside the rack 1 333 and is symmetrically distributed on the left and right sides. The pushing piece 3343 is provided with an upward inclined surface at one end close to the locking block 3341. The horizontal section of the locking block 3341 slides in cooperation with the inclined surface of the pushing piece 3343. The pushing piece 3343 is fixedly connected to a pressing block 3344 at one end away from the locking block 3341. A return spring 2 3345 located below the pushing piece 3343 is fixedly connected between the pressing block 3344 and the inner wall of the rack 1 333. The end of the pressing block 3344 away from the center of the rack 1 333 protrudes to the outside of the rack 1 333.

[0040] See also Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 and Figure 7 , the slide 31 is driven to move left and right in the slide trough by the moving mechanism 4. When the slide 31 drives the liquid pushing plate 32 to move toward the center of the pickling tank 1, the liquid pushing plate 32 is in a vertical state, and the end of the rack 333 close to the center of the pickling tank 1 protrudes to the outside of the slide 31. At this time, the vertical section of the locking block 3341 is plugged into the locking groove 3346 close to the center of the pickling tank 1. When the slide 31 moves to the end of the slide trough close to the center of the pickling tank 1, the liquid pushing plate 32 is in a vertical state. The pressing block 3344 first contacts the inner wall of the slide groove and gradually approaches the center of the rack 1 333 under the push of the inner wall of the slide groove. The pressing block 3344 pushes the pushing member 3343 gradually close to the center of the rack 1 333. At this time, the return spring 2 3345 will be compressed, and the pushing member 3343 will push the horizontal section of the locking block 3341 downward, so that the vertical section of the locking block 3341 is separated from the locking groove 3346 on the right, thereby releasing the lock of the rack 1 333 and the slide 31.

[0041] After that, as the slide 31 continues to move toward the center of the pickling tank 1, the rack 1 333 will remain stationary, and the rack 1 333 and the slide 31 will move relative to each other. The rack 1 333 is used to drive the gear 1 332 and the shaft 1 331 to rotate ninety degrees, so that the liquid pushing plate 32 is converted from a vertical state to a horizontal state. When the locking block 3341 moves to be aligned with the locking groove 3346 on the side away from the center of the pickling tank 1, the liquid pushing plate 32 is also completely converted to a horizontal state, and the moving mechanism 4 drives the slide 31 away from the center of the pickling tank 1. The locking plate 3341 is pushed upward by the rebound force of the reset spring 3342, so that the locking block 3341 is plugged into and locked with the locking groove 3346 on the side away from the center of the pickling tank 1, so that the liquid pushing plate 32 remains in a horizontal state.

[0042] Similarly, when the slide 31 moves to the end of the slide away from the center of the pickling tank 1, the rack 333 will also be blocked by the end of the slide and cannot continue to move with the slide 31. At this time, the rack 333 drives the gear 332 and the rotating shaft 331 to rotate in the opposite direction, so that the liquid pushing plate 32 is converted from a horizontal state to a vertical state.

[0043] See also Figure 1 、 Figure 2 and Figure 5 The liquid pushing plate 32 is fixedly connected to one side away from the center of the pickling tank 1 with two rows of brushes 34. Several brushes 34 in the same row are arranged equidistantly front to back and the spacing between adjacent brushes 34 is equal to the length of the brush 34. The brushes 34 in the upper and lower rows are alternately distributed front to back. When the liquid pushing plate 32 is converted to a horizontal state, the bottom of the brush 34 contacts the upper surface of the cold-rolled sheet.

[0044] When the liquid pushing plate 32 is converted to a horizontal state, the brush 34 contacts the surface of the cold-rolled sheet, and then the liquid pushing plate 32 moves away from the center of the pickling tank 1. At this time, the brush 34 will brush the surface of the cold-rolled sheet to improve the rust removal effect. At the same time, the pickling liquid in the pickling tank 1 will flow from the bottom of the liquid pushing plate 32 away from the center of the pickling tank 1 to rinse the surface of the cold-rolled sheet; the staggered distribution of the brushes 34 can ensure that the cold-rolled sheet is fully brushed, while also allowing the pickling liquid to flow through the gaps between adjacent brushes 34, so that the pickling liquid quickly rinses the surface of the cold-rolled sheet.

[0045] See also Figure 2 and Figure 7 The vibrating component 35 includes a rotating rod 351 rotatably mounted on the liquid pushing plate 32, and a plurality of deflection wheels 352 are equidistantly mounted on the rotating rod 351. An L-shaped pull rod 353 corresponding to the deflection wheels 352 is mounted on the interior of the liquid pushing plate 32 for sliding up and down. The vertical section of the L-shaped pull rod 353 is provided with a through slot 2 for the rotating rod 351 to pass through. The rotating rod 351 is movably connected to the through slot 2 up and down. The horizontal section of the L-shaped pull rod 353 is pressed against the top of the deflection wheel 352. The L-shaped pull rod 353 is horizontally A return spring three 354 is fixedly connected between the top of the segment and the inner wall of the liquid pushing plate 32, and a vibration impact block 355 is fixedly connected to the bottom of the vertical segment of the L-shaped pull rod 353. The vibration impact block 355 is installed on the bottom of the liquid pushing plate 32 for sliding up and down. The front and rear ends of the rotating rod 351 pass through the outside of the liquid pushing plate 32 and are fixedly connected to gear two 356. A rack two 357 symmetrically distributed front and back is fixedly connected to the inner wall of the pickling tank 1, and the gear two 356 is engaged with the rack two 357.

[0046] When the liquid pushing plate 32 moves toward the center of the pickling tank 1, the liquid pushing plate 32 is in a vertical state. At this time, gear 2 356 is meshed with the corresponding rack 2 357. The rack 2 357 is used to drive gear 2 356 to rotate, so that the rotating rod 351 drives the deflection wheel 352 to rotate, and the deflection wheel 352 is used to periodically push the L-shaped pull rod 353 to move upward. At this time, the reset spring 354 will be compressed and contracted. In the interval of the L-shaped pull rod 353 moving upward, the rebound force of the reset spring 354 is used to push the L-shaped pull rod 353 to move downward, so that the vibration impact block 355 at the bottom of the L-shaped pull rod 353 continuously pushes the cold-rolled sheet, causing the cold-rolled sheet to vibrate rapidly, and using vibration to promote the separation of rust on the surface of the cold-rolled sheet, further improving the pickling effect.

[0047] See also Figure 2 and Figure 3 The moving mechanism 4 includes a second rotating shaft 41 rotatably connected to the front and rear inner walls of the pickling tank 1. The end of the second rotating shaft 41 close to the center of the liquid pushing plate 32 is coaxially fixedly connected to the second turntable 42. The second turntable 42 is rotatably installed on the inner wall of the pickling tank 1. The edge of the second turntable 42 close to the center of the liquid pushing plate 32 is rotatably connected to a connecting rod 43. The end of the connecting rod 43 away from the second turntable 42 is rotatably connected to the corresponding slide 31.

[0048] See also Figure 1 and Figure 3 The rear side of the output shaft of the driving motor 5 is fixedly connected to the driving shaft 51 through a coupling, and the front and rear ends of the driving shaft 51 are connected to the corresponding turntable 231 and the rotating shaft 2 41 through belts.

[0049] The driving motor 5 drives the driving shaft 51 to rotate, and then the driving shaft 51 drives the turntable 1 231 and the rotating shaft 2 41 to rotate synchronously through the belt, and the rotating shaft 2 41 drives the turntable 2 42 to rotate synchronously, and the turntable 2 42 drives the slide 31 to rotate back and forth through the connecting rod 43. At the same time, the turntable 1 231 drives the infusion tube 21 to swing back and forth. The swinging direction of the infusion tube 21 is consistent with the moving direction of the slide 31, so that the direction in which the infusion tube 21 sprays the pickling liquid is consistent with the direction in which the push plate 32 pushes the pickling liquid to flow, thereby reducing the resistance of the pickling liquid flowing in the pickling tank 1 to the sprayed pickling liquid and improving the flushing effect.

[0050] The present invention also provides a cold-rolled sheet pickling method, which specifically comprises the following steps:

[0051] S1: One end of the cold-rolled sheet passes through the left and right openings of the pickling tank 1, and the cold-rolled sheet is transported from left to right through existing conveying equipment.

[0052] S2: Add pickling liquid to the pickling tank 1. The pickling liquid needs to submerge the cold-rolled sheet. The cold-rolled sheet is pickled using the pickling liquid in the pickling tank 1. At the same time, the ultrasonic transducer 6 is turned on to emit ultrasonic waves into the pickling tank 1.

[0053] S3: The pickling liquid is sprayed onto the surface of the cold-rolled sheet through the liquid spray nozzle 22 for washing.

[0054] S4: The driving motor 5 drives the moving mechanism 4 to operate, and then the moving mechanism 4 drives the liquid pushing plate 32 to move back and forth left and right. The liquid pushing plate 32 continuously switches between the vertical state and the horizontal state during the reciprocating movement, so that the liquid pushing plate 32 alternates between pushing the pickling liquid and brushing the cold-rolled sheet; at the same time, the driving motor 5 drives the infusion tube 21 to swing back and forth left and right by driving the swinging component 23, so that the liquid spray nozzle 22 continuously changes the flushing direction to reduce the spray resistance. When the liquid pushing plate 32 moves in the vertical state, the vibrating component 35 can continuously vibrate the cold-rolled sheet to peel off large pieces of iron filings.

[0055] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, integral or sliding connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0056] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cold-rolled sheet pickling production line, comprising a pickling tank, characterized in that: The pickling tank is equipped with a flushing mechanism, a liquid pushing mechanism and a driving motor that are symmetrically distributed on the left and right sides. A moving mechanism for driving the liquid pushing mechanism to move back and forth is installed on the inner wall of the pickling tank. A plurality of ultrasonic transducers arranged in a matrix are installed at the bottom of the pickling tank. The flushing mechanism includes a liquid infusion tube rotatably mounted inside the pickling tank, a plurality of liquid spray nozzles equidistantly distributed front and back are mounted on the lower side of the liquid infusion tube, and a swing component is mounted on the pickling tank to drive the liquid infusion tube to swing left and right; The liquid pushing mechanism includes a slide mounted on the inner wall of the pickling tank for sliding left and right and symmetrically distributed front and back, a liquid pushing plate for pushing the pickling liquid under the infusion tube is rotatably connected between the front and rear slides, a rotating component for driving the liquid pushing plate to switch between vertical and horizontal states is installed inside the slide, and the two states are switched back and forth so that the liquid pushing plate alternates between pushing the pickling liquid and brushing the cold-rolled thin plate, and a vibration component for vibrating the cold-rolled thin plate is installed on the liquid pushing plate; The driving motor drives the liquid infusion tube to swing back and forth and the liquid pushing plate to move back and forth synchronously, and the liquid pushing plate automatically switches to different states during the reciprocating movement to perform different forms of cleaning of the cold-rolled thin plate.

2. A cold-rolled sheet pickling production line according to claim 1, characterized in that: The swing component includes a turntable 1 rotatably mounted on the front and rear outer walls of the pickling tank. A push rod is fixedly connected to the side of the turntable 1 away from the center of the infusion tube. The push rod and the turntable 1 are not coaxial. The front and rear ends of the infusion tube are fixedly connected to the swing connecting rod after passing through the outside of the pickling tank. A through groove 1 is opened inside the swing connecting rod, and the push rod is slidably mounted in the corresponding through groove 1.

3. A cold-rolled sheet pickling production line according to claim 1, characterized in that: The liquid pushing plate is located on the side of the infusion pipe close to the center of the pickling tank. The side of the liquid pushing plate close to the center of the pickling tank is fixedly connected to a guide arc block. The bottom of the liquid pushing plate is fixedly connected to a liquid flow guide plate symmetrically distributed front and back. The end of the liquid flow guide plate close to the center of the liquid pushing plate is bent in the direction away from the center of the pickling tank.

4. A cold-rolled sheet pickling production line according to claim 1, characterized in that: The inner wall of the pickling tank is provided with a slide groove corresponding to the slide seat, and the slide seat is installed in the corresponding slide groove for sliding left and right. The rotating component includes a rotating shaft 1 fixedly connected to the front and rear sides of the liquid pushing plate, and the rotating shaft 1 is rotatably installed inside the slide seat. The outside of the rotating shaft 1 is fixedly sleeved with a gear 1, and a rack 1 located above the rotating shaft 1 is installed on the slide seat for sliding left and right. The rack 1 is engaged with the gear 1, and a locking component for locking the slide seat and the rack 1 is installed on the rack 1.

5. A cold-rolled sheet pickling production line according to claim 4, characterized in that: The locking assembly includes a locking block that is slidably installed in the middle of rack one. The locking block is in an inverted T-shape and the top of its vertical section protrudes above rack one. A reset spring one is fixedly connected between the bottom of the horizontal section of the locking block and the inner wall of rack one. The inner top wall of the slide is provided with locking grooves that are symmetrically distributed on the left and right. The vertical section of the locking block is plugged into one of the locking grooves. An unlocking assembly for unlocking the locking block is also installed on rack one.

6. A cold-rolled sheet pickling production line according to claim 5, characterized in that: The unlocking assembly includes a pushing piece that is slidably installed left and right inside the rack and is symmetrically distributed left and right. The pushing piece is provided with an upward inclined surface at one end close to the locking block. The horizontal section of the locking block slides in cooperation with the inclined surface of the pushing piece. The pushing piece is fixedly connected to a pressing block at one end away from the locking block. A return spring 2 located below the pushing piece is fixedly connected between the pressing block and the inner wall of the rack. The end of the pressing block away from the center of the rack protrudes to the outside of the rack.

7. A cold-rolled sheet pickling production line according to claim 1, characterized in that: The liquid pushing plate is fixedly connected to one side away from the center of the pickling tank with two rows of brushes, and the brushes in the same row are arranged equidistantly front to back and the spacing between adjacent brushes is equal to the length of the brush. The brushes in the upper and lower rows are alternately distributed front to back. When the liquid pushing plate is converted to a horizontal state, the bottom of the brush contacts the upper surface of the cold-rolled thin plate.

8. The cold-rolled sheet pickling production line according to claim 1, characterized in that: The vibration component includes a rotating rod rotatably mounted on the liquid pushing plate, and a number of deflection wheels are equidistantly mounted on the rotating rod front and back. An L-shaped pull rod corresponding to the deflection wheels is slidably mounted up and down inside the liquid pushing plate. The vertical section of the L-shaped pull rod is provided with a through slot 2 for the rotating rod to pass through, and the rotating rod is movably connected to the through slot 2 up and down. The horizontal section of the L-shaped pull rod is pressed against the top of the deflection wheel, and a return spring 3 is fixedly connected between the top of the horizontal section of the L-shaped pull rod and the inner wall of the liquid pushing plate. The bottom of the vertical section of the L-shaped pull rod is fixedly connected to a vibration impact block, and the vibration impact block is slidably mounted on the bottom of the liquid pushing plate. The front and rear ends of the rotating rod pass through the outside of the liquid pushing plate and are fixedly connected to gear 2. The inner wall of the pickling tank is fixedly connected to rack 2 that is symmetrically distributed front and back, and the gear 2 is meshed with rack 2.

9. A cold-rolled sheet pickling production line according to claim 2, characterized in that: The moving mechanism includes two rotating shafts that are rotatably connected to the front and rear inner walls of the pickling tank, one end of the rotating shaft close to the center of the liquid pushing plate is coaxially fixedly connected to the turntable two, the turntable two is rotatably installed on the inner wall of the pickling tank, the edge of the turntable two close to the center of the liquid pushing plate is rotatably connected to a connecting rod, the end of the connecting rod away from the turntable two is rotatably connected to the corresponding slide, the rear side of the drive motor output shaft is fixedly connected to the drive shaft through a coupling, and the front and rear ends of the drive shaft are both connected to the corresponding turntable one and rotating shaft two through belts.

10. A cold-rolled sheet pickling method, characterized in that: The cold-rolled sheet pickling production line according to claim 1 is used for completion, comprising the following steps: S1: Pass one end of the cold-rolled sheet through the left and right openings of the pickling tank, and convey the cold-rolled sheet from left to right through the existing conveying equipment; S2: Add pickling liquid to the pickling tank. The pickling liquid needs to submerge the cold-rolled sheet. The cold-rolled sheet is pickled using the pickling liquid in the pickling tank. At the same time, the ultrasonic transducer is turned on to emit ultrasonic waves into the pickling tank. S3: spraying pickling liquid onto the surface of the cold-rolled sheet through a liquid spray nozzle for washing; S4: The driving motor drives the moving mechanism to operate, and then the moving mechanism drives the liquid pushing plate to move back and forth left and right. The liquid pushing plate continuously switches between the vertical state and the horizontal state during the reciprocating movement, so that the liquid pushing plate alternates between pushing the pickling liquid and brushing the cold-rolled sheet. When the liquid pushing plate moves in the vertical state, the vibrating component can continuously vibrate the cold-rolled sheet to peel off large pieces of iron filings; at the same time, the driving motor drives the infusion tube to swing back and forth left and right by driving the swinging component.

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