An automatic full-closed type stainless steel pickling line

Abstract

The present application relates to a kind of automatic full-enclosed stainless steel pickling line, including unwinding machine, winding machine, washing tank, first pickling tank, second pickling tank and drying oven, washing tank left and right ends are respectively set up unwinding machine and drying oven, drying oven one end is set up winding machine, washing tank and drying oven adjacent one end side wall are connected by connecting pipe, washing tank and drying oven are away from one end side wall respectively with the entrance seat and exit seat for steel band to pass, entrance seat is provided with riveting device for the head-to-tail connection of two steel band in, entrance seat is away from the one end of washing tank still be provided with photoelectric sensor for detecting steel band, exit seat is provided with cutting device for cutting steel band. By setting automatic riveting, cutting device, the head-to-tail connection of steel band in different steel coil is realized, the continuity of steel band pickling is guaranteed, manual operation burden is reduced, and pickling efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pickling line, in particular to an automatic full-closed stainless steel pickling line. BACKGROUND

[0002] The traditional pickling equipment needs manual operation to place the steel strip on the roller, and there are human factors in the operation process, which is easy to cause misoperation and safety hazards. At present, the stainless steel strip pickling line needs to be equipped with multiple pickling tanks, and this kind of open pickling tank will produce a large amount of acid mist in the pickling process, which not only harms human health, but also pollutes the atmospheric environment. In order to ensure the pickling effect, the length of the pickling tank is relatively long, and the various pickling and washing equipment in the pickling line is arranged in a straight line, which occupies a large amount of space.

[0003] Patent No. CN202222506748.1 discloses a hot-rolled wide strip stainless steel strip mixed acid pickling circulating device, which comprises a pickling mechanism and a washing mechanism. The washing mechanism is provided outside the pickling mechanism. The first pickling tank is provided with a guide roller on the inner side. The first pickling tank is provided with a first acid inlet on one side. The first pickling tank is provided with a first acid outlet on the other side. The first pickling tank is provided with a brushing mechanism. The second pickling tank is provided with a guide roller on the inner side. The second pickling tank is provided with a second acid inlet on one side. The second pickling tank is provided with a second acid outlet on the other side. The second pickling tank is provided with a washing mechanism. Acid solution is supplied to the first pickling tank through the first acid inlet, and the surface of the stainless steel strip guided by the guide roller is pickled. The acid solution is discharged through the first acid outlet. The pickled stainless steel strip is washed by the washing mechanism. The washed stainless steel strip enters the second pickling tank for pickling. Acid solution is supplied to the second pickling tank through the second acid inlet. The acid solution is discharged through the second acid outlet. The steel strip pickling equipment of the application provides the flow rate of the acid solution by setting the rotating brush and the stirring block to improve the pickling quality. In the acid solution, a layer of bubbles is formed on the metal surface, which hinders the contact between the acid solution and the metal surface, thereby reducing the pickling effect. The existing technology uses air flow flushing to improve the pickling quality, but the existing air flow flushing structure is fixed and cannot fully impact the surface of the steel strip, and the air flow flushing effect is limited. The steel strip pickling line in the prior art has low automation, and the steel strip needs to be placed in the pickling tank manually, which increases the labor burden and affects the pickling efficiency. SUMMARY

[0004] The present application discloses an automatic full-closed stainless steel pickling line to solve the problem of harm to human health caused by acid mist in the prior art. A riveting device is provided at the inlet end to realize automatic joint of the steel strip and ensure the continuity of the steel strip pickling. A novel air flow flushing structure is provided in the pickling tank to provide air flow impact effect and ensure the pickling quality.

[0005] The specific technical solutions are as follows:

[0006] An automatic full-closed stainless steel pickling line comprises an unwinding machine, a winding machine, a washing box, a first pickling box, a second pickling box and a drying box, the washing box is provided with the unwinding machine and the drying box at the left and right ends respectively, the winding machine is arranged at one end of the drying box, and the washing box and the drying box are connected in communication through a connecting pipe between the side walls of the adjacent ends, the side walls of the ends away from each other of the washing box and the drying box are respectively provided with an inlet seat and an outlet seat for the steel belt to pass through, a riveting device for connecting two steel belts end to end is arranged in the inlet seat, and a photoelectric sensor for detecting the steel belt is further arranged at the end of the inlet seat away from the washing box, and a cutting device for cutting the steel belt is arranged in the outlet seat.

[0007] The inside of the washing box is divided by a partition plate and sequentially forms a first washing chamber, a second washing chamber and a third washing chamber from left to right, the first, second and third washing chambers are respectively provided with guide rollers for guiding the steel belt, the third washing chamber is provided with a vibration cleaning device, and the top of the first, second and third washing chambers is respectively provided with an opening for the steel belt to pass through.

[0008] The top of the washing box is provided with the first pickling box and the second pickling box at the two ends respectively, the first pickling box and the second pickling box are symmetrically arranged, the upper ends of the adjacent ends of the first pickling box and the second pickling box are both horizontally protruded to form inlet and outlet chambers, the bottom of each of the two inlet and outlet chambers is provided with a channel seat, and the positions of the two channel seats correspond to the top opening positions of the first and third washing chambers respectively; the adjacent ends of the two inlet and outlet chambers are both provided with a rectangular through opening, a connecting cover is arranged between the through openings of the two inlet and outlet chambers, the connecting cover is provided with an exhaust pipe at the top, a centrifugal fan is arranged in the exhaust pipe, a channel cover shell is connected to the bottom of the connecting cover, and the bottom of the channel cover shell is connected to the top opening of the second washing chamber; guide rollers are also arranged around the inside of the first pickling box and the second pickling box, and a tension adjusting device is arranged at the side away from the first pickling box and the second pickling box to adjust the position of one of the guide rollers, so as to adjust the tension of the steel belt; an airflow impact roller device is arranged at the lower end of the inside of the first pickling box and the second pickling box, and the airflow impact roller device is used for airflow washing the upper and lower surfaces of the steel belt.

[0009] The stainless steel pickling line further comprises a PLC control device, and the PLC control device is electrically connected with the photoelectric sensor, the riveting device, the cutting device and the tension adjusting roller assembly.

[0010] Further, the riveting device comprises a riveting oil cylinder, an upper die head, a lower die base, a servo motor, the riveting oil cylinder is arranged on the top of the inlet seat in the width direction of the steel belt, the piston rod of the riveting oil cylinder penetrates the top of the inlet seat and is connected with the upper die head, the lower die base is arranged on the inner wall of the bottom of the inlet seat, and the mounting groove for accommodating the lower die base is arranged on the inner wall of the bottom of the inlet seat, so that the top of the lower die base in the mounting groove is flush with the inner wall of the bottom of the inlet seat, the lower die base comprises two lower die blocks arranged symmetrically, the two lower die blocks are arranged in the mounting groove through the sliding groove and the sliding rail, a plurality of groups of semicircular recess grooves are symmetrically arranged on the upper end of the adjacent side of the two lower die blocks, and the recess grooves in each group are distributed at equal intervals along the two ends of the lower die block, the two recess grooves in each group form a complete recess groove after the two lower die blocks are connected, and the position of the recess groove corresponds to the position of the upper die head, a screw rod is arranged in the two lower die blocks in the transverse direction, the screw rod is threadedly connected with the two lower die blocks, the screw rod is threadedly connected with the two lower die blocks in opposite directions at the two ends, and the screw rod is connected with the two lower die blocks, so that the screw rod rotates and drives the two lower die blocks to move towards each other, one end of the screw rod is arranged on the inner wall of the mounting groove in a rotating manner, the other end of the screw rod penetrates the mounting groove in a horizontal direction and extends into the through port, the through port penetrates the bottom of the inlet seat in the longitudinal direction and is located on one side of the mounting groove, the servo motor is arranged on the bottom of the inlet seat, and the output end of the servo motor drives the screw rod to rotate through the transmission assembly arranged in the through port.

[0011] Further, lifting assemblies matched with the two lower die blocks are arranged on the inner walls on both sides of the mounting groove, each lifting assembly comprises a lifting block and a return spring, one side of the lifting block is arranged on the inner wall on one side of the mounting groove in a longitudinal sliding manner through the sliding block and the sliding groove, the bottom of the lifting block is connected with the bottom of the mounting groove through the spring, the side of the lifting block close to the lower die block is provided with a first inclined surface at the lower end, the upper end of one side of the lower die block is provided with a second inclined surface matched with the first inclined surface, so that the lower die block moves, and the inclined directions of the first and second inclined surfaces are the same, and through the cooperation of the inclined surfaces, the two lower die blocks can drive the two lifting blocks to rise when the two lower die blocks move to the two sides respectively.

[0012] Further, the cutting device comprises a cutting cylinder arranged on the top of the outlet seat, a cutting knife arranged in the outlet seat and fixedly connected with the piston rod of the cutting cylinder, and a bottom die base arranged on the inner wall of the bottom of the outlet seat and located below the cutting knife.

[0013] Further, the airflow impact roller device comprises impact roller assemblies arranged at the bottom end inside the first and second pickling boxes and airflow conveying pipes arranged outside the first and second pickling boxes. The number of the impact roller assemblies is at least two and the impact roller assemblies are arranged along the conveying direction of the steel belt. The impact roller assemblies comprise concave rollers and convex rollers. The concave rollers have a structure of thin in the middle and thick at both ends. The convex rollers have a structure of thick in the middle and thin at both ends. The concave rollers and the convex rollers are arranged in an up-down distribution and close to each other, and the rotation directions of the concave rollers and the convex rollers are opposite. The steel belt is arranged to pass through the concave rollers and the convex rollers, so that the cross section of the steel belt is arranged in an arc shape. The up-down distribution directions of the concave rollers and the convex rollers in adjacent two impact roller assemblies are opposite. The concave rollers and the convex rollers are hollow structures and are provided with gas conveying channels. One end of each of the concave rollers and the convex rollers is rotatably arranged on the inner wall of one side of the first and second pickling boxes through a shaft. The other end of each of the concave rollers and the convex rollers is provided with a hollow shaft which is in communication with the gas conveying channel. The two hollow shafts horizontally penetrate the other side wall of the first and second pickling boxes and are rotatably connected with and in communication with the airflow conveying pipes. The airflow conveying pipes are connected with a high-pressure gas source. The surfaces of the concave rollers and the convex rollers are provided with concave grooves, and the concave grooves on the concave rollers and the convex rollers are arranged in a staggered distribution. A plurality of nozzles are arranged in the concave grooves in a radial direction. The nozzles are in communication with the gas conveying channels through gas outlet channels.

[0014] Further, one side of the airflow conveying pipe is provided with a plurality of gas conveying branch pipes. The positions of the gas conveying branch pipes correspond to the positions of the hollow shafts respectively. The gas conveying branch pipes and the hollow shafts are rotatably connected through rotary joints.

[0015] Further, the nozzles are provided with a water seepage prevention structure. The water seepage prevention structure comprises a sealing steel ball movably arranged in the nozzle. The diameter of the sealing steel ball is smaller than the maximum diameter of the inner cavity of the nozzle. The upper end of the inner wall of the nozzle is provided with a plurality of limiting blocks for limiting the movement of the sealing steel ball. The bottom end of the inner cavity of the nozzle is a conical surface structure which is large at the top and small at the bottom. The sealing steel ball and the bottom end of the inner cavity of the nozzle cooperate to seal the gas outlet channel.

[0016] Further, the tension adjusting device comprises adjusting cylinders, roller supports, connecting rod arms and pressure sensors, the adjusting cylinders are two in number and are longitudinally arranged on the inner walls on the two sides of the first and second pickling tanks through supports, the piston rods of the adjusting cylinders are connected with hinged seats, and a pressure sensor is arranged between the piston rod of each adjusting cylinder and the hinged seat, one end of each hinged seat is hingedly connected with a connecting rod arm, the middle parts of the connecting rod arms are rotatably arranged on the inner walls on the two sides of the first and second pickling tanks through rotating shafts, long and strip-shaped guide grooves are formed in the other ends of the two connecting rod arms along the length directions of the connecting rod arms, the connecting rod arms are matched with the sliding shafts at one end of the roller supports through the guide grooves, the movable connection between the roller supports and the connecting rod arms is realized, the roller supports are obliquely arranged in the first pickling tank, the roller supports are slidably arranged on the inner walls on the two sides of the first and second pickling tanks, and the roller supports are caused to slide along the oblique directions of the roller supports, and the guide rollers are rotatably arranged at one end of the roller supports.

[0017] Further, the vibration cleaning device comprises mounting bins, vibration motors, vibration bases, connecting rods and vibration blocks, the mounting bins are horizontally arranged in the washing tanks, the two ends of the mounting bins are connected with the inner walls on the two sides of the washing tanks, a plurality of groups of transversely arranged protruding seats are arranged on the inner wall bottoms of the mounting bins, the protruding seats in each group are arranged along the length directions of the mounting bins, a connecting rod is longitudinally arranged in each protruding seat, a damping sleeve is arranged on the inner wall of each protruding seat, and the damping sleeve is arranged in close contact with the connecting rod; the top ends of the connecting rods are horizontally arranged with the vibration bases, the vibration motors are arranged on the vibration bases, the upper ends of the connecting rods are sleeved with compression springs, the lower ends of the compression springs are abutted against the protruding seats, and the upper ends of the compression springs support the vibration bases; the bottom ends of the connecting rods in the same group of protruding seats are horizontally connected with a long and strip-shaped vibration block, and the bottom of the vibration block is arranged in an arc shape and is arranged in close contact with the surface of the steel belt.

[0018] Further, the channel seat is in a rectangular structure, and soft scraping pads are arranged on the inner walls of the channel seat.

[0019] The beneficial effects of the present application are embodied in:

[0020] (1) The two pickling tanks in the pickling line are arranged on the water tank, the space occupation is reduced, and the two pickling tanks adopt a fully enclosed structure, which effectively avoids acid mist leakage and harm to human health.

[0021] (2) The automatic riveting and cutting devices are arranged at the two ends of the stainless steel belt pickling line, the head and tail connections of the steel belts in different steel coils are realized, the continuity of the steel belt pickling is ensured, the manual operation burden is reduced, and the pickling efficiency is improved.

[0022] (3) The acid pickling box is provided with the airflow impact roller device, compared with the traditional airflow impact structure, the concave roller is matched with the convex roller, the steel belt is bent and deformed, so that the iron oxide skin is easily peeled off, the nozzles on the concave roller and the convex roller are matched, the nozzles are arranged close to the surface of the steel belt, the airflow sprayed by the nozzles can effectively peel off the iron oxide skin, and therefore the acid pickling quality is improved.

[0023] (4) The tension adjusting device can monitor the tension of the steel belt in real time, and automatically adjusts the tension size through the driving adjusting cylinder under the control of the PLC control device.

[0024] (5) The vibration cleaning device is arranged in the water tank, the vibration force generated by the vibration motor is transmitted to the surface of the steel belt through the vibration block and the connecting rod, the steel belt is high-frequency vibrated in the water tank, so that the residual pickling liquid on the surface of the steel belt can be effectively removed, and the corrosion of the steel belt caused by the residual pickling liquid is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present application.

[0026] Figure 2 It is an enlarged schematic diagram of A in the figure. Figure 1

[0027] Figure 3 It is a top view structural schematic diagram of the riveting device in the present application.

[0028] Figure 4 It is a structural schematic diagram of the impact roller assembly in the present application.

[0029] Figure 5 It is a side view of the first acid pickling box in the present application.

[0030] Figure 6 It is an enlarged schematic diagram of C in the figure. Figure 5

[0031] It is an enlarged schematic diagram of B in the figure. Figure 7 Figure 1

[0032] Figure 8 It is a structural schematic diagram of the vibration cleaning device in the present application.

[0033] Unwinding machine 1, winding machine 2;

[0034] ​​​Water washing box 3, inlet seat 31, photoelectric sensor 311, mounting groove 312, through hole 313, first water washing bin 32, second water washing bin 33, third water washing bin 34, guide roller 35, vibration cleaning device 36, mounting bin 361, vibration motor 362, vibration base 363, connecting rod 364, vibration block 365, protruding seat 366, compression spring 367, shock absorbing sleeve 368;

[0035] Riveting device 4, riveting oil cylinder 41, upper die head 42, lower die block 43, concave die groove 431, second inclined surface 432, servo motor 44, lead screw 45, transmission assembly 46, lifting block 47, first inclined surface 471, return spring 48, slide rail 49;

[0036] First pickling tank 5, inlet and outlet bin 51, passage seat 52, soft scraping pad 521, tension adjusting device 53, adjusting cylinder 531, roller support 532, connecting rod arm 533, pressure sensor 534, hinged seat 535, guide groove 536, slide shaft 537;

[0037] Second pickling tank 6, connecting cover 61, exhaust pipe 62, centrifugal fan 63, passage cover 64;

[0038] Airflow impact roller device 7, airflow conveying pipe 71, gas conveying branch pipe 711, rotary joint 712, concave roller 72, gas conveying passage 721, hollow shaft 722, concave groove 723, nozzle 724, sealing steel ball 7241, limiting block 7242, gas outlet passage 725, convex roller 73;

[0039] Drying box 8, outlet seat 81, hot air drying assembly 82;

[0040] Cutting device 9, cutting cylinder 91, bottom die seat 92, cutting knife 93

[0041] Steel belt 10. DETAILED DESCRIPTION

[0042] In order to make the technical solutions of the present application clearer and more explicit, the present application will be further described below in combination with the drawings. Any equivalent replacement and conventional inference of the technical features of the technical solutions of the present application fall within the protection scope of the present application. The fixed connection and fixed setting mentioned in the present application are general connection modes in the mechanical field, and welding, bolt and nut connection and screw connection are all possible.

[0043] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0044] As shown in Figure 1 An automatic full-closed stainless steel pickling line, comprising an unwinding machine 1, a winding machine 2, a washing box 3, a first pickling box 5, a second pickling box 6 and a drying box 8, the unwinding machine 1 and the drying box 8 are respectively arranged at the left and right ends of the washing box 3, the winding machine 2 is arranged at one end of the drying box 8, and the washing box 3 and the drying box 8 are connected through a connecting pipe at the side wall adjacent to each other, the drying box 8 is internally provided with a hot air drying assembly 82 for drying the upper and lower surfaces of the steel strip, the washing box 3 and the drying box 8 are respectively provided with an inlet seat 31 and an outlet seat 81 for the steel strip 10 to pass through at the side wall away from each other, the inlet seat 31 is in communication with the inside of the washing box 3, the outlet seat 81 is in communication with the inside of the drying box 8, the inlet seat 31 is provided with a riveting device 4 for connecting two steel strips end to end, and the end of the inlet seat 31 away from the washing box 3 is further provided with a photoelectric sensor 311 for detecting the steel strip, and the outlet seat 81 is provided with a cutting device 9 for cutting the steel strip.

[0045] The inside of the washing box 3 is divided by a partition and sequentially forms a first washing chamber 32, a second washing chamber 33 and a third washing chamber 34 from left to right, the inside of the first, second and third washing chambers 34 is respectively provided with a guide roller 35 for guiding the steel strip, the guide roller 35 is driven to rotate by a driving motor, the third washing chamber 34 is provided with a vibration cleaning device 36, and the top of the first, second and third washing chambers 34 is respectively provided with a rectangular opening for the steel strip 10 to pass through.

[0046] The first pickling box 5 and the second pickling box 6 are symmetrically arranged on the top of the water washing box 3, and the upper end of the adjacent end of the first pickling box 5 and the second pickling box 6 is horizontally protruded to be provided with an inlet and outlet bin 51. The bottom of the two inlet and outlet bins 51 is provided with a rectangular passage seat 52, and the positions of the two passage seats 52 correspond to the top opening positions of the first and third water washing bins 34 respectively. The inner wall of the passage seat 52 is provided with a soft scraping pad 521 on both sides, and the two soft scraping pads 521 are arranged to be attached to the surfaces of the two sides of the steel belt respectively, so as to scrape the pickling liquid or water on the surface of the steel belt. The adjacent end of the two inlet and outlet bins 51 is provided with a rectangular opening 313, and the opening 313 of the inlet and outlet bin 51 is provided with a guide roller 35 for conveying the steel belt. A connecting cover 61 is arranged between the openings 313 of the two inlet and outlet bins 51, and the connecting cover 61 is provided with an exhaust pipe 62 at the top, and the exhaust pipe 62 is provided with a centrifugal fan 63. The acid mist generated in the first and second pickling boxes 6 is discharged through the centrifugal fan 63. The bottom of the connecting cover 61 is connected with a passage cover shell 64, and the bottom of the passage cover shell 64 is connected with the top opening of the second water washing bin 33. The first pickling box 5 and the second pickling box 6 are also provided with guide rollers 35 around the inside, and the tension adjusting device 53 is arranged on the side away from the first pickling box 5 and the second pickling box 6 to adjust the position of one of the guide rollers 35, so as to adjust the tension of the steel belt. The airflow impact roller device 7 is arranged at the lower end of the inside of the first pickling box 5 and the second pickling box 6, and is used for airflow washing the upper and lower surfaces of the steel belt. The steel belt enters the first water washing bin 32 in the water washing box 3 to be pre-washed to remove dust and impurities on the surface of the steel belt before entering the first pickling box 5 through the passage seat 52. The steel belt conveyed out of the inlet and outlet bin 51 of the first pickling box 5 enters the second water washing bin 33 through the passage cover shell 64, and then is conveyed upward to the inlet and outlet bin 51 of the second pickling box 6 through the guide roller in the water washing box 3, and is subjected to secondary pickling. After the secondary pickling, the steel belt enters the third pickling bin through the passage seat 52, and finally is discharged to the winding machine 2 through the outlet seat 81 of the drying box 8.

[0047] The stainless steel pickling line also comprises a PLC control device, which is electrically connected with the driving motor, the photoelectric sensor 311, the riveting device 4, the cutting device 9 and the tension adjusting roller assembly, so that the photoelectric sensor 311 can monitor the conveying of the steel strip in the inlet seat 31. When a roll of steel strip is conveyed completely, the photoelectric sensor 311 sends a signal to the PLC control device, so as to control the entire pickling line to stop running. After a new roll of steel strip is placed in the inlet seat 31, the riveting device 4 starts to rivet the head and tail of the two rolls of steel strip. After riveting, the steel strip is normally pickled. After the steel strip 10 moves through the entire pickling line, the riveting position of the head and tail of the two rolls of steel strip moves to the cutting device 9 of the outlet seat 81. Then, the pickling line stops running and performs cutting treatment. After cutting, the completed steel strip is unloaded by the trolley, and the new steel strip is wound on the rewinding machine 2 to continue the rewinding work, and the process is repeated.

[0048] As shown in Figures 2-3 The riveting device 4 comprises a riveting oil cylinder 41, an upper die head 42, a lower die seat and a servo motor 44. The riveting oil cylinder 41 is arranged in the top of the inlet seat 31 in the width direction of the steel strip, and the piston rod of the riveting oil cylinder 41 penetrates downward through the top end of the inlet seat 31 and is connected with the upper die head 42. The lower die seat is arranged on the inner wall of the bottom end of the inlet seat 31, and the inner wall of the bottom end of the inlet seat 31 is provided with a mounting groove 312 for accommodating the lower die seat, so that the top end of the lower die seat in the mounting groove 312 is flush with the inner wall of the bottom end of the inlet seat 31. The lower die seat comprises two lower die blocks 43 arranged symmetrically, and the two lower die blocks 43 are horizontally slidably arranged in the mounting groove 312 through the sliding groove and the sliding rail 49. A plurality of groups of semicircular recess grooves 431 are symmetrically arranged on the upper end of the adjacent side of the two lower die blocks 43, and the recess grooves 431 in each group are distributed at equal intervals along the two ends of the lower die block 43. After the two lower die blocks 43 are connected, the two recess grooves 431 in each group form a complete recess groove 431, and the position of the recess groove 431 corresponds to the position of the upper die head 42. A lead screw 45 is horizontally arranged in the two lower die blocks 43, and the lead screw 45 is threadedly connected with the two lower die blocks 43. The screw threads of the two ends of the lead screw 45 are opposite, and the two ends of the lead screw 45 are connected with the two lower die blocks 43, respectively, so that the lead screw 45 rotates and drives the two lower die blocks 43 to move towards each other. One end of the lead screw 45 is rotatably arranged on the inner wall of the mounting groove 312, and the other end of the lead screw 45 horizontally penetrates the mounting groove 312 and extends into the through opening 313. The through opening 313 longitudinally penetrates the bottom end of the inlet seat 31 and is located on one side of the mounting groove 312. The servo motor 44 is arranged on the bottom of the inlet seat 31. The output end of the servo motor 44 drives the lead screw 45 to rotate through the transmission assembly 46 arranged in the through opening 313. The transmission assembly 46 comprises two transmission wheels and a transmission belt matched with the transmission wheels.

[0049] In order to avoid the riveting convex of the steel strip after riveting from interfering with the concave die groove 431, affecting the normal conveying of the steel strip, a lifting assembly is arranged on the inner wall of the installation groove 312 on both sides and matched with the two lower die modules 43. Each lifting assembly comprises a lifting block 47 and a return spring 48. The lifting block 47 is in a strip shape. The lifting block 47 is longitudinally slidably arranged on the inner wall of one side of the installation groove 312 through a sliding block matched with a sliding groove. The bottom of the lifting block 47 is connected with the bottom of the installation groove 312 through a spring. The side of the lifting block 47 close to the lower die module 43 has a first inclined surface 471 at the lower end. The upper end of one side of the lower die module 43 is provided with a second inclined surface 432 matched with the inclined surface, so that the lower die module 43 and the first and second inclined surfaces 432 are inclined in the same direction. Through the cooperation of the inclined surfaces, when the two lower die modules 43 move to the two sides respectively, the two lower die modules 43 can drive the two lifting blocks 47 to rise respectively, so as to lift the steel strip and make the riveting convex on the steel strip away from the concave die groove 431, avoiding the interference between the riveting convex and the concave die groove 431 when the steel strip is transversely moved.

[0050] The cutting device 9 comprises a cutting cylinder 91 arranged on the top of the outlet seat 81, a cutting knife 93 arranged in the outlet seat 81 and fixedly connected with the piston rod of the cutting cylinder 91, and a bottom die seat 92 arranged on the inner wall of the bottom end of the outlet seat 81 and located below the cutting knife 93. The cutting device 9 is used for cutting the riveting position of the steel strip.

[0051] As Figures 4-5As shown, the airflow impact roller device 7 includes impact roller assemblies arranged at the bottom end inside the first and second pickling tanks 6 and airflow conveying pipes 71 arranged outside the first and second pickling tanks 6. The number of impact roller assemblies is at least two and they are arranged along the conveying direction of the steel strip. Each impact roller assembly includes a concave roller 72 and a convex roller 73. The concave roller 72 has a structure with thin middle and thick ends, and the convex roller 73 has a structure with thick middle and thin ends. The concave roller 72 and the convex roller 73 are arranged in an up-down distribution and close to each other, and the rotation directions of the concave roller 72 and the convex roller 73 are opposite. The steel strip is conveyed between the concave roller 72 and the convex roller 73, so that the cross section of the steel strip is arranged in an arc shape. The up-down distribution directions of the concave roller 72 and the convex roller 73 in adjacent two impact roller assemblies are opposite, so that when the steel strip is located in different impact roller assemblies, the bending direction also changes. The concave roller 72 and the convex roller 73 are hollow structures and are provided with gas conveying passages 721. One end of each of the concave roller 72 and the convex roller 73 is rotatably arranged on the inner wall of one side of the first and second pickling tanks 6 through a shaft. The other end of each of the concave roller 72 and the convex roller 73 is provided with a hollow shaft 722 connected with the gas conveying passage 721. The two hollow shafts 722 horizontally penetrate the other side wall of the first and second pickling tanks 6. One side of the airflow conveying pipe 71 is provided with a plurality of gas branch pipes 711. The positions of each of the gas branch pipes 711 correspond to the positions of one of the hollow shafts 722. The gas branch pipe 711 and the hollow shaft 722 are rotatably connected through a rotary joint 712. The airflow conveying pipe 71 is connected with a high-pressure gas source for providing airflow impact. The surfaces of the concave roller 72 and the convex roller 73 are provided with concave grooves 723. The concave grooves 723 on the concave roller 72 and the convex roller 73 are distributed in a staggered manner. A plurality of nozzles 724 are distributed in the radial direction in the concave grooves 723. One end of each of the nozzles 724 is not higher than the surface of the concave roller 72 and the convex roller 73 to prevent the nozzles 724 from contacting the steel strip. The nozzles 724 are connected with the gas conveying passage 721 through gas outlet passages 725, so that the nozzles 724 can spray airflow on the surface of the steel strip to remove the surface iron oxide impurities.

[0052] As shown in Figure 6 To prevent the pickling liquid from entering the inside of the concave roller 72 and the convex roller 73, a water seepage prevention structure is arranged in the nozzle 724. The water seepage prevention structure includes a sealing steel ball 7241 movably arranged in the nozzle 724. The diameter of the sealing steel ball 7241 is smaller than the maximum diameter of the inner cavity of the nozzle 724. A plurality of limiting blocks 7242 for limiting the movement of the sealing steel ball 7241 are arranged on the inner wall of the nozzle 724. The bottom end of the inner cavity of the nozzle 724 is a tapered structure with large upper end and small lower end. The sealing steel ball 7241 cooperates with the bottom end of the inner cavity of the nozzle 724 to seal the gas outlet passage 725.

[0053] As shown in Figure 7As shown, the tension adjusting device 53 comprises adjusting cylinders 531, roller supports 532, connecting rod arms 533 and pressure sensors 534, the adjusting cylinders 531 are two in number and are longitudinally arranged on the inner walls of the two sides of the first and second pickling tanks 6 through supports, the piston rods of the adjusting cylinders 531 are connected with hinged seats 535, and a pressure sensor 534 is arranged between the piston rod of each adjusting cylinder 531 and the hinged seat 535, one end of each connecting rod arm 533 is hingedly connected to the hinged seat 535, the connecting rod arms 533 are Z-shaped structures, the middle portions of the two connecting rod arms 533 are rotatably arranged on the inner walls of the two sides of the first and second pickling tanks 6 through shafts, long and strip-shaped guide grooves 536 are formed in the length direction of the other ends of the two connecting rod arms 533, the connecting rod arms 533 are matched with the sliding shafts 537 at one end of the roller supports 532 through the guide grooves 536, the movable connection between the roller supports 532 and the connecting rod arms 533 is realized, the roller supports 532 are square box structures, the roller supports 532 are arranged in the first pickling tank 5 at an angle of 45°, the roller supports 532 are slidably arranged on the inner walls of the two sides of the first and second pickling tanks 6 and are caused to slide in the inclined direction thereof, the roller supports 532 are rotatably arranged with the guide rollers 35 at one end thereof, the pressure sensors 534 and the adjusting cylinders 531 are electrically connected with the PLC control device, so that the pressure of the guide rollers 35 can be monitored in real time, and the positions of the guide rollers 35 are adjusted through the adjusting cylinders 531, so that the tension of the steel belt is adjusted.

[0054] As shown in the drawings, Figure 8 As shown, the vibration cleaning device 36 in the water washing tank 3 comprises mounting bins 361, vibration motors 362, vibration bases 363, connecting rods 364 and vibration blocks 365, the mounting bins 361 are horizontally arranged in the water washing tank 3, the two ends of the mounting bins 361 are connected with the inner walls of the two sides of the water washing tank 3, a plurality of groups of transversely arranged protruding seats 366 are arranged on the inner wall bottom end of each mounting bin 361, the protruding seats 366 in each group are arranged in the length direction of the mounting bin 361, one connecting rod 364 is longitudinally arranged in each protruding seat 366, a damping sleeve 368 is arranged on the inner wall of each protruding seat 366, and the damping sleeve 368 is arranged in close contact with the connecting rod 364, so as to reduce the vibration force transmitted to the mounting bin 361 by the connecting rod 364; the top ends of the connecting rods 364 are horizontally arranged with the vibration bases 363, the vibration motors 362 are arranged on the vibration bases 363, the upper ends of the connecting rods 364 are each sleeved with a compression spring 367, the lower end of the compression spring 367 is abutted against the protruding seat 366, and the upper end of the compression spring 367 supports the vibration base 363; the bottom ends of the connecting rods 364 in the same group of protruding seats 366 are horizontally connected with a long and strip-shaped vibration block 365, the bottom of the vibration block 365 is arranged in an arc shape and is arranged in close contact with the surface of the steel belt 10, so as to transmit the vibration force to the surface of the steel belt, and the steel belt is caused to vibrate at a high frequency in the water tank, so that the pickling solution remaining on the surface of the steel belt is removed.

[0055] The above description is only preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An automatic fully-closed type stainless steel pickling line, characterized by, The application relates to a steel strip washing device, which comprises unwinding machines, winding machines, a washing box, a first pickling box, a second pickling box and a drying box, the washing box is provided with the unwinding machines and the drying box at the left and right ends respectively, the winding machines are arranged at one end of the drying box, the washing box and the drying box are connected through connecting pipes at one side wall adjacent to each other, the side wall, which is away from the washing box, of the washing box and the drying box is respectively provided with an inlet seat and an outlet seat for the steel strip, the inlet seat is provided with riveting devices for connecting two steel strips, the end, which is away from the washing box, of the inlet seat is provided with photoelectric sensors for detecting the steel strip, and the outlet seat is provided with cutting devices for cutting the steel strip. The inside of the washing box is divided into a first washing chamber, a second washing chamber and a third washing chamber through a partition plate from left to right, the first, second and third washing chambers are respectively provided with guide rollers for guiding the steel strip, the third washing chamber is provided with a vibration cleaning device, and the top of the first, second and third washing chambers is respectively provided with an opening for the steel strip to pass through. The top of the washing box is provided with the first pickling box and the second pickling box at the two ends, the first pickling box and the second pickling box are symmetrically arranged, the upper end of the adjacent end of the first pickling box and the second pickling box is horizontally protruded and provided with an inlet and outlet chamber, the bottom of the two inlet and outlet chambers is provided with a channel seat, the positions of the two channel seats correspond to the top opening positions of the first and third washing chambers respectively, the adjacent end of the two inlet and outlet chambers is provided with a rectangular through opening, a connecting cover is arranged between the through openings of the two inlet and outlet chambers, the connecting cover is provided with an exhaust pipe at the top, the exhaust pipe is provided with a centrifugal fan, the bottom of the connecting cover is connected with a channel cover shell, the bottom of the channel cover shell is connected with the top opening of the second washing chamber, the first pickling box and the second pickling box are also provided with guide rollers around the inside, the side, which is away from the first pickling box and the second pickling box, is provided with a tension adjusting device for adjusting the position of one of the guide rollers, so that the tension of the steel strip is adjusted, the lower end of the inside of the first pickling box and the second pickling box is provided with an airflow impact roller device for airflow washing the upper and lower surfaces of the steel strip. The air flow impact roller device comprises impact roller assemblies arranged at the bottom ends inside the first and second pickling boxes and air flow conveying pipes arranged outside the first and second pickling boxes, the number of the impact roller assemblies is at least two, and the impact roller assemblies are arranged along the conveying direction of the steel belt, the impact roller assemblies comprise a concave roller and a convex roller, the concave roller has a structure of thin in the middle and thick at both ends, the convex roller has a structure of thick in the middle and thin at both ends, the concave roller and the convex roller are arranged in an up-down distribution and close to each other, and the rotation directions of the concave roller and the convex roller are opposite, the steel belt is arranged between the concave roller and the convex roller, so that the cross section of the steel belt is arranged in an arc shape, and the up-down distribution directions of the concave roller and the convex roller in adjacent two impact roller assemblies are opposite; the concave roller and the convex roller are both hollow structures and are provided with gas conveying channels, one end of the concave roller and the convex roller is rotatably arranged on the inner wall of one side of the first and second pickling boxes through a shaft, the other end of the concave roller and the convex roller is provided with a hollow shaft connected with the gas conveying channel, the two hollow shafts horizontally penetrate the other side wall of the first and second pickling boxes and are rotatably connected with and communicated with the air flow conveying pipes, and the air flow conveying pipes are connected with a high-pressure gas source; the surfaces of the concave roller and the convex roller are provided with concave grooves, and the concave grooves on the concave roller and the convex roller are arranged in a staggered distribution, a plurality of nozzles are arranged in the concave grooves in a radial direction, and the nozzles are communicated with the gas conveying channels through gas outlet channels. The vibration cleaning device comprises a mounting bin, a vibration motor, a vibration base, connecting rods, and vibration blocks, the mounting bin is arranged in the washing box, a plurality of groups of transversely arranged protruding seats are arranged on the inner wall of the bottom end of the mounting bin, the protruding seats in each group are arranged along the length direction of the mounting bin, one connecting rod is longitudinally arranged in each protruding seat, and a damping sleeve is arranged on the inner wall of each protruding seat; the vibration base is arranged at the top ends of the connecting rods, the vibration motor is arranged on the vibration base, a compression spring is arranged on the upper end of each connecting rod, the lower end of the compression spring abuts against the protruding seat, and the upper end of the compression spring supports the vibration base; the connecting rods in the same group of protruding seats are horizontally connected with a long strip-shaped vibration block at the bottom ends, and the bottom of the vibration block is arranged in an arc shape and abuts against the surface of the steel belt. The stainless steel pickling line further comprises a PLC control device, and the PLC control device is electrically connected with the photoelectric sensor, the riveting device, the cutting device, and the tension adjusting roller assembly.

2. The automatic fully-closed stainless steel pickling line according to claim 1, wherein The riveting device comprises a riveting oil cylinder, an upper die head, a lower die base, and a servo motor, the riveting oil cylinder is arranged on the top of the inlet seat in the width direction of the steel belt, the piston rod of the riveting oil cylinder penetrates through the top of the inlet seat and is connected with the upper die head, the lower die base is arranged on the inner wall of the bottom of the inlet seat, and the installation groove for accommodating the lower die base is arranged on the inner wall of the bottom of the inlet seat, so that the top of the lower die base in the installation groove is flush with the inner wall of the bottom of the inlet seat, the lower die base comprises two lower die blocks arranged symmetrically, the two lower die blocks are arranged in the installation groove through the sliding groove and the sliding rail, a plurality of groups of semicircular concave die grooves are symmetrically arranged on the upper end of the adjacent side of the two lower die blocks, the concave die grooves in each group are distributed at equal intervals along the two ends of the lower die block, and the concave die grooves in each group form a complete concave die groove after the two lower die blocks are connected, and the position of the concave die groove corresponds to the position of the upper die head, a screw rod is arranged in the two lower die blocks in the transverse direction, the screw rod is threadedly connected with the two lower die blocks, the screw rod is threadedly connected with the two lower die blocks in opposite directions at the two ends, and the screw rod is connected with the two lower die blocks, so that the screw rod rotates and drives the two lower die blocks to move towards each other, one end of the screw rod is arranged on the inner wall of the installation groove, the other end of the screw rod penetrates through the installation groove and extends into the through port, the through port penetrates through the bottom of the inlet seat in the longitudinal direction and is located on one side of the installation groove, the servo motor is arranged on the bottom of the inlet seat, and the output end of the servo motor drives the screw rod to rotate through the transmission assembly arranged in the through port.

3. The automatic fully-closed stainless steel pickling line according to claim 2, characterized in that, Lifting assemblies matched with the two lower die blocks are arranged on the inner walls on both sides of the installation groove, each lifting assembly comprises a lifting block and a return spring, one side of the lifting block is arranged on the inner wall on one side of the installation groove through the sliding block and the sliding groove, the bottom of the lifting block is connected with the bottom of the installation groove through the spring, the side of the lifting block close to the lower die block is provided with a first inclined surface at the lower end, and the upper end of one side of the lower die block is provided with a second inclined surface matched with the first inclined surface, so that the lower die block, the first inclined surface and the second inclined surface are inclined in the same direction, and the two lower die blocks can drive the two lifting blocks to rise when the two lower die blocks move to the two sides respectively through the cooperation of the inclined surfaces.

4. The automatic fully-closed stainless steel pickling line according to claim 1, wherein The cutting device comprises a cutting cylinder arranged on the top of the outlet seat, a cutting knife arranged in the outlet seat and fixedly connected with the piston rod of the cutting cylinder, and a bottom die base arranged on the inner wall of the bottom of the outlet seat and below the cutting knife.

5. The automatic fully-closed stainless steel pickling line according to claim 1, wherein One side of the airflow conveying pipe is provided with a plurality of gas conveying branch pipes, the positions of the gas conveying branch pipes correspond to the positions of the hollow shafts respectively, and the gas conveying branch pipes are rotationally connected with the hollow shafts through the rotary joints.

6. The automatic enclosed stainless steel pickling line as claimed in claim 1, wherein, The nozzle is internally provided with a water permeation prevention structure, the water permeation prevention structure comprises a sealing steel ball movably arranged in the nozzle, the diameter of the sealing steel ball is smaller than the maximum diameter of the inner cavity of the nozzle, and a plurality of limiting blocks for limiting the movement of the sealing steel ball are arranged on the inner wall of the nozzle at the upper end; the bottom end of the inner cavity of the nozzle is a conical surface structure with a large upper end and a small lower end, and the sealing of the air outlet channel is realized through the cooperation of the sealing steel ball and the bottom end of the inner cavity of the nozzle.

7. The automatic enclosed stainless steel pickling line as claimed in claim 1, wherein, The tension adjusting device comprises adjusting cylinders, roller supports, connecting rod arms and pressure sensors, the adjusting cylinders are two in number and are longitudinally arranged on the inner walls of the two sides of the first and second pickling boxes through supports, the piston rods of the adjusting cylinders are connected with hinged seats, and a pressure sensor is arranged between the piston rod of each adjusting cylinder and the hinged seat, one end of each connecting rod arm is hinged to the hinged seat, the middle parts of the connecting rod arms are rotatably arranged on the inner walls of the two sides of the first and second pickling boxes through rotating shafts, long and strip-shaped guide grooves are formed in the other ends of the two connecting rod arms along the length directions of the connecting rod arms, the connecting rod arms are matched with the sliding shafts at one end of the roller supports through the guide grooves, the movable connection between the roller supports and the connecting rod arms is realized, the roller supports are obliquely arranged in the first pickling box, the two sides of the roller supports are slidably arranged on the inner walls of the two sides of the first and second pickling boxes, and the roller supports are caused to slide along the oblique directions of the roller supports, and the guide rollers are rotatably arranged at one end of the roller supports.

8. The automatic enclosed stainless steel pickling line as claimed in claim 1, wherein, The channel seat is in a rectangular structure, and soft scraping pads are arranged on the inner walls of the two sides of the channel seat and are arranged in close contact with the two sides of the steel belt.

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