Pickling device and pickling method for bearing steel pipe machining

Abstract

The invention relates to the technical field of bearing steel pipe machining, in particular to a pickling device for bearing steel pipe machining, which comprises a table body, a pickling tank is formed in the upper surface of the table body, a sliding plate is vertically and slidably arranged in the pickling tank, rotating rods are symmetrically and rotatably mounted on the surface of the sliding plate, and a mounting disc is fixedly mounted at one end of each rotating rod; a plurality of sleeving rods and a plurality of first threaded rods are fixedly installed on the surface of the installation disc in a circumferential shape, the first threaded rods are sleeved with sliding blocks in a threaded mode, abutting plates are fixedly installed on the surfaces of the sliding blocks through connecting rods, and rotation of the abutting plates is limited through first limiting parts; the two rotating rods are controlled by a transmission assembly to rotate together, and the sliding plate provides driving force for vertical movement through a driving assembly. According to the bearing steel pipe pickling device, a plurality of bearing steel pipes needing to be subjected to pickling treatment can be fixed, collision of the bearing steel pipes in the pickling process is avoided, the bearing steel pipes of different sizes can be fixed, and practicability is high.

Description

Technical Field

[0001] The invention relates to the technical field of bearing steel pipe processing, and in particular to a pickling device and a pickling method for bearing steel pipe processing. Background Art

[0002] Bearing steel pipes need to be pickled in a pickling device before processing. Pickling is a method of using acid solution to remove oil, scale and rust on the surface of steel, which can prevent the surface of bearing steel pipes from rusting.

[0003] Existing bearing steel tubes are placed in a basket, and then the basket is placed in a pickling tank for pickling. During the pickling process, the bearing steel tubes in the basket are not fixed, so that multiple bearing steel tubes may collide, resulting in surface wear. Summary of the invention

[0004] The purpose of the present invention is to solve the following shortcomings in the prior art: existing bearing steel tubes are placed in a basket, and then the basket is placed in a pickling tank for pickling treatment. During the pickling process, the bearing steel tubes in the basket are not fixed, so that multiple bearing steel tubes may collide, resulting in surface wear, and a pickling device for bearing steel tube processing is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A pickling device for processing bearing steel pipes, comprising a table body, a pickling tank is provided on the upper surface of the table body, a slide plate is vertically slidably arranged in the pickling tank, a rotating rod is symmetrically and rotatably mounted on the surface of the slide plate, a mounting plate is fixedly mounted on one end of the rotating rod, a plurality of sleeve rods and a plurality of first threaded rods are fixedly mounted on the surface of the mounting plate in a circular shape, the plurality of first threaded rods respectively correspond to the positions of the plurality of sleeve rods, a slider is threadedly sleeved on the first threaded rod, a stop plate is fixedly mounted on the surface of the slider via a connecting rod, and the stop plate is restricted from rotating by a first restriction component; The two rotating rods are controlled to rotate together through a transmission assembly, and the slide plate is provided with a driving force for vertical movement through a driving assembly.

[0006] Preferably, a plurality of groups of the first limiting components are distributed in a circular shape on the surface of the mounting disk, the first limiting components include first limiting rods symmetrically fixedly mounted on the surface of the mounting disk, and the slider is slidably sleeved on the two first limiting rods.

[0007] Preferably, the transmission assembly includes a first drive motor, three sprockets respectively fixedly sleeved on the output shaft of the first drive motor and two rotating rods, and a chain meshed and wound around the three sprockets, and the first drive motor is fixedly mounted on the surface of the skateboard.

[0008] Preferably, the driving assembly includes a second driving motor and a second threaded rod fixedly mounted on the end of the output shaft of the second driving motor, a mounting plate is fixedly mounted on the surface of the platform, the second driving motor is fixedly mounted on the surface of the mounting plate, a sliding block is threadedly sleeved on the second threaded rod, a connecting rod is fixedly mounted on the surface of the sliding block, and the end of the connecting rod away from the sliding block is fixedly connected to the surface of the skateboard.

[0009] Preferably, mounting plates are fixedly mounted on the left and right side walls of the platform body, a rotating shaft is horizontally rotatably mounted on the surface of the mounting plate, a slot cover is fixedly sleeved on the rotating shaft, a gear is fixedly sleeved on the rotating shaft, rack rods are fixedly mounted on the left and right side walls of the skateboard through connecting rods, and the two rack rods are respectively meshed and connected with two gears.

[0010] Preferably, a support plate is symmetrically fixedly installed in the pickling tank, and a plurality of installation openings are equidistantly provided on the surface of the support plate. A hollow rod with one end designed to be closed is fixedly installed in the installation opening, a piston rod is inserted into the open end of the hollow rod in a sliding seal, a liquid passage tube is fixedly installed at the closed end of the hollow rod, a telescopic spring is provided in the hollow rod, and both ends of the telescopic spring are fixedly connected to the piston rod and the hollow rod respectively, and the movement of the multiple piston rods is controlled by a pressing assembly.

[0011] Preferably, the pressure assembly includes a reciprocating screw horizontally rotatably installed in the pickling tank, a moving block threadedly sleeved on the reciprocating screw, and two first pressure blocks respectively fixedly installed on the left and right ends of the moving block, a second pressure block is fixedly installed on the end of the piston rod located outside, the cross-section of the first pressure block is an isosceles triangle, the cross-section of the second pressure block is an isosceles trapezoid, the inclined surfaces of the two first pressure blocks are respectively arranged face to face with the inclined surfaces of multiple second pressure blocks, a friction wheel is fixedly sleeved on the reciprocating screw, a friction layer is bonded to the surface of the chain, the friction wheel corresponds to the position of the chain, and the moving block is restricted in rotation by a second limiting component.

[0012] Preferably, the second limiting component includes a limiting groove horizontally opened at the bottom of the pickling tank and a second limiting rod fixedly installed on the lower surface of the moving block, and the bottom end of the second limiting rod is slidably arranged in the limiting groove.

[0013] A pickling method for a pickling device for processing a bearing steel pipe, the pickling method comprising the following steps: S1: First, a plurality of bearing steel pipes to be pickled are respectively sleeved on a plurality of sleeve rods, and then the abutment plates are controlled to move horizontally by rotating the first threaded rod until the plurality of abutment plates are tightly abutted against one end of the plurality of bearing steel pipes, thereby completing the fixing of the plurality of bearing steel pipes; S2: injecting pickling liquid into the pickling tank, and then starting the second driving motor to control the second threaded rod to rotate, so that the slide plate with the two mounting plates and the plurality of fixed bearing steel pipes moves down to be immersed in the pickling liquid; S3: At this time, the first drive motor is started. When the output shaft of the first drive motor rotates, the two mounting plates rotate together under the transmission effect of the chain and multiple sprockets, thereby increasing the flow rate between the bearing steel pipe and the contact surface of the pickling liquid to perform pickling processing; S4: After the pickling work is completed, the second drive motor is started, and the control slide is moved out of the pickling liquid with the two mounting plates and the plurality of bearing steel pipes, and then the plurality of first threaded rods are rotated to separate the plurality of abutment plates from the plurality of bearing steel pipes respectively, and after the abutment pressure on the bearing steel pipe is released, the bearing steel pipe can be removed from the sleeve rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects: Through the cooperation between the first threaded rod, the sleeve rod and the abutment plate, multiple bearing steel pipes that need to be pickled can be fixed to avoid collision during the pickling process, and bearing steel pipes of different sizes can be fixed, which is highly practical. The transmission assembly can control the two mounting plates to rotate together, so that multiple fixed bearing steel pipes can rotate together, speeding up the flow rate between the bearing steel pipe and the contact surface of the pickling liquid, speeding up the pickling process and improving the pickling efficiency; When the slide plate moves down with the two mounting plates and the multiple bearing steel pipes under the action of the driving assembly and is immersed in the pickling liquid, the two slot covers will also rotate relatively. When the multiple bearing steel pipes are completely immersed in the pickling liquid, the two slot covers will rotate to a horizontal state, thereby simply closing the notch of the pickling tank to prevent the pickling liquid from splashing out of the notch of the pickling tank that is always in an open state during the pickling process. When the pickling is completed and the multiple bearing steel pipes move up, the two slot covers will rotate relatively again to open the notch of the pickling tank. When the bearing steel tube moves to the bottom and the two mounting plates rotate, under the action of the pressure component, multiple hollow rods will intermittently suck part of the pickling liquid into their own interior, and then spray it out and act on the surfaces of the multiple rotating bearing steel tubes, thereby further improving the pickling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front three-dimensional structure of a pickling device for processing bearing steel pipes proposed by the present invention; Figure 2 This is a top view of a three-dimensional structural diagram of a pickling device for processing a bearing steel pipe proposed by the present invention; Figure 3This is a schematic diagram of the front three-dimensional partial cross-sectional structure of a pickling device for bearing steel pipe processing proposed by the present invention; Figure 4 It is a partial three-dimensional structural schematic diagram of two mounting plates in a pickling device for processing bearing steel pipes proposed by the present invention; Figure 5 It is a schematic diagram of a partial three-dimensional cross-sectional structure of a piston rod and a hollow rod in a pickling device for processing a bearing steel pipe proposed by the present invention; Figure 6 for Figure 2 The enlarged structural diagram at A in the middle; Figure 7 for Figure 3 The enlarged structural diagram at B in the middle; Figure 8 for Figure 4 Enlarged structural diagram at point C in the middle.

[0016] In the figure: 1 a body, 2 a pickling tank, 3 a slide plate, 4 a rotating rod, 5 a mounting plate, 6 a sleeve rod, 7 a first threaded rod, 8 a slider, 9 a push plate, 10 a first limiting rod, 11 a first driving motor, 12 a sprocket, 13 a chain, 14 a second driving motor, 15 a second threaded rod, 16 a sliding block, 17 a connecting rod, 18 a rotating shaft, 19 a slot cover, 20 a gear, 21 a rack rod, 22 a supporting plate, 23 a hollow rod, 24 a piston rod, 25 a liquid passage, 26 a telescopic spring, 27 a reciprocating screw rod, 28 a moving block, 29 a first pressing block, 30 a second pressing block, 31 a friction wheel, 32 a limiting groove, and 33 a second limiting rod. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] Reference Figure 1-Figure 8 A pickling device for processing bearing steel pipes comprises a table body 1, a pickling tank 2 is provided on the upper surface of the table body 1, a slide plate 3 is vertically slidably arranged in the pickling tank 2, a rotating rod 4 is symmetrically and rotatably mounted on the surface of the slide plate 3, a mounting plate 5 is fixedly mounted on one end of the rotating rod 4, a plurality of sleeve rods 6 and a plurality of first threaded rods 7 are fixedly mounted on the surface of the mounting plate 5 in a circular shape, the plurality of first threaded rods 7 respectively correspond to the positions of the plurality of sleeve rods 6, a slider 8 is threadedly sleeved on the first threaded rod 7, a stop plate 9 is fixedly mounted on the surface of the slider 8 through a connecting rod, the stop plate 9 is restricted in rotation by a first restriction component, a plurality of groups of first restriction components are circumferentially distributed on the surface of the mounting plate 5, the first restriction component comprises a first restriction rod 10 symmetrically and fixedly mounted on the surface of the mounting plate 5, and the slider 8 is slidably sleeved on the two first restriction rods 10; The two rotating rods 4 are controlled to rotate together by a transmission assembly, and the transmission assembly includes a first driving motor 11, three sprockets 12 respectively fixedly sleeved on the output shafts of the first driving motor 11 and the two rotating rods 4, and a chain 13 meshed and wound with the three sprockets 12. The first driving motor 11 is fixedly mounted on the surface of the slide plate 3; The slide plate 3 is provided with a driving force for vertical movement through a driving assembly, the driving assembly includes a second driving motor 14 and a second threaded rod 15 fixedly mounted on the end of the output shaft of the second driving motor 14, a placement plate is fixedly mounted on the surface of the platform 1, the second driving motor 14 is fixedly mounted on the surface of the placement plate, a sliding block 16 is threadedly sleeved on the second threaded rod 15, a connecting rod 17 is fixedly mounted on the surface of the sliding block 16, and an end of the connecting rod 17 away from the sliding block 16 is fixedly connected to the surface of the slide plate 3; When pickling multiple bearing steel tubes, firstly, the multiple bearing steel tubes are respectively sleeved on the multiple sleeve rods 6, and then the multiple first threaded rods 7 are rotated. At this time, the slider 8 threadedly sleeved on the first threaded rod 7 will move laterally with the abutment plate 9 under the limiting action of the two first limiting rods 10, until the multiple abutment plates 9 are respectively tightly pressed against one end of the multiple bearing steel tubes sleeved on the sleeve rods 6, that is, the bearing steel tubes are pressed between themselves and the mounting plate 5, and the bearing steel tubes can be fixed, and the multiple bearing steel tubes will not contact each other, avoiding mutual collision and wear during the pickling process. At the same time, bearing steel tubes of different sizes can be fixed, which improves the practicality of the device; After the multiple bearing steel tubes are fixed, the second drive motor 14 is started to control the second threaded rod 15 to rotate, so that the sliding block 16 threadedly sleeved on the second threaded rod 15 moves the slide plate 3 vertically, until the slide plate 3 moves down with the two mounting plates 5 and the multiple fixed bearing steel tubes into the pickling liquid immersed in the pickling tank 2, and then the first drive motor 11 is started again. When the output shaft of the first drive motor 11 is rotating, under the transmission action of the multiple sprockets 12 and the chain 13, the two rotating rods 4 will respectively rotate with the two mounting plates 5, so that the multiple fixed bearing steel tubes rotate together, thereby accelerating the flow rate between the contact surface of the bearing steel tube and the pickling liquid, accelerating the pickling process, and improving the pickling efficiency.

[0019] The left and right side walls of the platform 1 are fixedly mounted with mounting plates, the surface of the mounting plate is horizontally rotatably mounted with a rotating shaft 18, a slot cover 19 is fixedly sleeved on the rotating shaft 18, a gear 20 is fixedly sleeved on the rotating shaft 18, and the left and right side walls of the slide plate 3 are fixedly mounted with rack rods 21 through connecting rods, and the two rack rods 21 are respectively meshed and connected with the two gears 20; When the slide plate 3 moves vertically, the two rack rods 21 will also move together, and the two gears 20 respectively meshing with the two rack rods 21 will respectively drive the two slot covers 19 to rotate relative to each other; When the slide plate 3 moves down to the bottom, the two slot covers 19 will rotate relative to each other to a horizontal state, and the notch of the pickling tank 2 will be simply closed to prevent the pickling liquid in the pickling tank 2 from being thrown out from the notch of the pickling tank 2 due to the rotation of the mounting plate 5 during the pickling process. At the same time, when the pickling device is not working, the two mounting plates 5 and the plurality of sleeve rods 6 can enter the pickling tank 2 and close the notch of the pickling tank 2 to prevent external impurities from entering from the notch of the pickling tank 2. When the pickling work is finished and the slide plate 3 moves up with the multiple bearing steel pipes, the two slot covers 19 will rotate relative to each other to open the slot of the pickling tank 2, which will not affect the upward movement of the bearing steel pipes.

[0020] A support plate 22 is symmetrically fixedly installed in the pickling tank 2, and a plurality of mounting openings are equidistantly provided on the surface of the support plate 22. A hollow rod 23 with one end designed to be closed is fixedly installed in the mounting opening. A piston rod 24 is inserted into the sliding seal at the open end of the hollow rod 23. A liquid passage tube 25 is fixedly installed at the closed end of the hollow rod 23. A telescopic spring 26 is provided in the hollow rod 23. The two ends of the telescopic spring 26 are respectively fixedly connected to the piston rod 24 and the hollow rod 23. The movement of the plurality of piston rods 24 is controlled by a pressing assembly. The pressing assembly includes a reciprocating screw rod 27 horizontally rotatably installed in the pickling tank 2, a moving block 28 threadedly sleeved on the reciprocating screw rod 27, and two first pressing blocks respectively fixedly installed at the left and right ends of the moving block 28. The pressure block 29, a second pressure block 30 is fixedly installed at one end of the piston rod 24 located outside, the cross section of the first pressure block 29 is an isosceles triangle, the cross section of the second pressure block 30 is an isosceles trapezoid, the inclined surfaces of the two first pressure blocks 29 are respectively arranged face to face with the inclined surfaces of the plurality of second pressure blocks 30, a friction wheel 31 is fixedly sleeved on the reciprocating screw rod 27, a friction layer is bonded to the surface of the chain 13, the friction wheel 31 corresponds to the position of the chain 13, the moving block 28 is limited in rotation by a second limiting component, the second limiting component includes a limiting groove 32 horizontally opened at the bottom of the pickling tank 2 and a second limiting rod 33 fixedly installed on the lower surface of the moving block 28, and the bottom end of the second limiting rod 33 is slidably arranged in the limiting groove 32; When the slide plate 3 moves down to the bottom with the two mounting plates 5 and the plurality of bearing steel tubes, the chain 13 will abut against the friction wheel 31. Then, when the chain 13 rotates, the friction wheel 31 will also drive the reciprocating screw 27 to rotate. The moving block 28 threadedly sleeved on the reciprocating screw 27 will reciprocate in the horizontal direction under the restriction of the restriction groove 32 and the second restriction rod 33. During the movement, the inclined surfaces of the two first pressing blocks 29 will intermittently abut against the inclined surfaces of the plurality of second pressing blocks 30. When the inclined surfaces abut against each other, the piston rod 24 will move in the direction away from the first pressing block 29 under the force of the abutment. The volume inside the hollow rod 23 becomes smaller, and the pressure increases. The pickling liquid inside the hollow rod 23 will be squeezed out from the liquid pipe 25 and act on the surface of the rotating bearing steel tube, thereby achieving an impact on the bearing steel tube, thereby improving the pickling efficiency again. When the first pressing block 29 no longer presses against the second pressing block 30, the pressing force applied to the piston rod 24 disappears, and the piston rod 24 quickly moves and resets under the elastic potential energy of the telescopic spring 26. At this time, the volume inside the hollow rod 23 increases and the pressure decreases. Part of the pickling liquid in the pickling tank 2 enters the hollow rod 23 from the liquid passing pipe 25, and is squeezed out next time the piston rod 24 moves due to the pressing force.

[0021] A pickling method for a pickling device for processing a bearing steel pipe, the pickling method comprising the following steps: S1: First, a plurality of bearing steel tubes to be pickled are respectively sleeved on a plurality of sleeve rods 6, and then the first threaded rod 7 is rotated to control the abutment plate 9 to move horizontally until the plurality of abutment plates 9 are tightly abutted against one end of the plurality of bearing steel tubes, respectively, to complete the fixing of the plurality of bearing steel tubes; S2: injecting pickling liquid into the pickling tank 2, and then starting the second driving motor 14 to control the second threaded rod 15 to rotate, so that the slide plate 3 with the two mounting plates 5 and the plurality of fixed bearing steel pipes moves down to be immersed in the pickling liquid; S3: At this time, the first drive motor 11 is started. When the output shaft of the first drive motor 11 rotates, the two mounting plates 5 rotate together under the transmission effect of the chain 13 and the plurality of sprockets 12, thereby increasing the flow rate between the contact surface of the bearing steel pipe and the pickling liquid, and performing pickling processing; S4: After the pickling work is completed, the second drive motor 14 is started, and the slide plate 3 is controlled to move out of the pickling liquid with the two mounting plates 5 and the plurality of bearing steel pipes, and then the plurality of first threaded rods 7 are rotated to separate the plurality of abutment plates 9 from the plurality of bearing steel pipes respectively, and after the abutment pressure on the bearing steel pipe is released, the bearing steel pipe can be removed from the sleeve rod 6.

[0022] In the present invention, when pickling multiple bearing steel tubes, first, the multiple bearing steel tubes are respectively sleeved on the multiple sleeve rods 6, and then the multiple first threaded rods 7 are rotated. At this time, the slider 8 threadedly sleeved on the first threaded rod 7 will move laterally with the abutment plate 9 under the limiting action of the first limiting component, until the multiple abutment plates 9 are respectively tightly against one end of the multiple bearing steel tubes sleeved on the sleeve rod 6, that is, the bearing steel tube is pressed between itself and the mounting plate 5, and the bearing steel tube can be fixed, and the multiple bearing steel tubes will not contact, avoiding mutual collision and wear during the pickling process. At the same time, bearing steel tubes of different sizes can be fixed, which improves the practicality of the device. Then, the driving component controls the slide plate 3 to move down with the two mounting plates 5 and the multiple bearing steel tubes to immerse them in the pickling solution for pickling. The transmission component can also be used to control the two rotating rods 4 to rotate with the multiple bearing steel tubes to accelerate the flow rate between the contact surface of the bearing steel tube and the pickling solution, thereby accelerating the pickling process and improving the pickling efficiency.

[0023] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pickling device for processing bearing steel pipes, comprising a table (1), characterized in that: The upper surface of the platform (1) is provided with a pickling tank (2), a slide plate (3) is vertically slidably arranged in the pickling tank (2), a rotating rod (4) is symmetrically rotatably mounted on the surface of the slide plate (3), one end of the rotating rod (4) is fixedly mounted with a mounting plate (5), a plurality of sleeve rods (6) and a plurality of first threaded rods (7) are fixedly mounted on the surface of the mounting plate (5) in a circular shape, the plurality of first threaded rods (7) respectively corresponding to the positions of the plurality of sleeve rods (6), a slider (8) is threadedly sleeved on the first threaded rod (7), a stop plate (9) is fixedly mounted on the surface of the slider (8) via a connecting rod, and the stop plate (9) is restricted in rotation by a first restriction component; The two rotating rods (4) are controlled to rotate together through a transmission assembly, and the slide plate (3) is provided with a driving force for vertical movement through a driving assembly.

2. A pickling device for bearing steel pipe processing according to claim 1, characterized in that: A plurality of groups of the first limiting components are distributed in a circular shape on the surface of the mounting plate (5), the first limiting components comprising first limiting rods (10) symmetrically fixedly mounted on the surface of the mounting plate (5), and the sliders (8) are slidably sleeved on the two first limiting rods (10).

3. A pickling device for bearing steel pipe processing according to claim 1, characterized in that: The transmission assembly comprises a first drive motor (11), three sprockets (12) respectively fixedly sleeved on the output shaft of the first drive motor (11) and two rotating rods (4), and a chain (13) meshed and wound around the three sprockets (12); the first drive motor (11) is fixedly mounted on the surface of the slide plate (3).

4. A pickling device for processing bearing steel pipe according to claim 1, characterized in that: The drive assembly comprises a second drive motor (14) and a second threaded rod (15) fixedly mounted on the end of an output shaft of the second drive motor (14); a mounting plate is fixedly mounted on the surface of the platform (1); the second drive motor (14) is fixedly mounted on the surface of the mounting plate; a sliding block (16) is threadedly sleeved on the second threaded rod (15); a connecting rod (17) is fixedly mounted on the surface of the sliding block (16); and one end of the connecting rod (17) away from the sliding block (16) is fixedly connected to the surface of the slide plate (3).

5. The pickling device for processing bearing steel pipe according to claim 1, characterized in that: The left and right side walls of the platform (1) are both fixedly mounted with mounting plates, a rotating shaft (18) is horizontally rotatably mounted on the surface of the mounting plate, a slot cover (19) is fixedly sleeved on the rotating shaft (18), a gear (20) is fixedly sleeved on the rotating shaft (18), and rack rods (21) are fixedly mounted on the left and right side walls of the slide plate (3) via connecting rods, and the two rack rods (21) are respectively meshed and connected with the two gears (20).

6. A pickling device for processing bearing steel pipe according to claim 3, characterized in that: A support plate (22) is symmetrically fixedly installed in the pickling tank (2), and a plurality of installation openings are equidistantly provided on the surface of the support plate (22). A hollow rod (23) having one end designed to be closed is fixedly installed in the installation opening. A piston rod (24) is inserted into the open end of the hollow rod (23) in a sliding seal. A liquid passage tube (25) is fixedly installed at the closed end of the hollow rod (23). A telescopic spring (26) is provided in the hollow rod (23), and the two ends of the telescopic spring (26) are respectively fixedly connected to the piston rod (24) and the hollow rod (23). The movement of the plurality of piston rods (24) is controlled by a pressing assembly.

7. A pickling device for processing bearing steel pipe according to claim 6, characterized in that: The pressing assembly comprises a reciprocating screw (27) mounted horizontally and rotatably in the pickling tank (2), a moving block (28) threadedly sleeved on the reciprocating screw (27), and two first pressing blocks (29) respectively fixedly mounted on the left and right ends of the moving block (28); a second pressing block (30) is fixedly mounted on the end of the piston rod (24) located outside; the cross section of the first pressing block (29) is an isosceles triangle; the cross section of the second pressing block (30) is an isosceles trapezoid; the inclined surfaces of the two first pressing blocks (29) are respectively arranged face to face with the inclined surfaces of the plurality of second pressing blocks (30); a friction wheel (31) is fixedly sleeved on the reciprocating screw (27); a friction layer is bonded to the surface of the chain (13); the friction wheel (31) corresponds to the position of the chain (13); and the moving block (28) is restricted in rotation by a second restriction component.

8. A pickling device for processing bearing steel pipe according to claim 7, characterized in that: The second limiting component comprises a limiting groove (32) horizontally opened at the bottom of the pickling tank (2) and a second limiting rod (33) fixedly mounted on the lower surface of the moving block (28), wherein the bottom end of the second limiting rod (33) is slidably disposed in the limiting groove (32).

9. A pickling method for a pickling device for processing bearing steel pipes, characterized in that: The pickling method comprises the following steps: S1: First, a plurality of bearing steel tubes to be pickled are respectively sleeved on a plurality of sleeve rods (6), and then the first threaded rod (7) is rotated to control the abutment plate (9) to move horizontally until the plurality of abutment plates (9) are respectively tightly abutted against one end of the plurality of bearing steel tubes, thereby completing the fixing of the plurality of bearing steel tubes; S2: injecting pickling liquid into the pickling tank (2), and then starting the second drive motor (14) to control the second threaded rod (15) to rotate, so that the slide plate (3) with the two mounting plates (5) and the plurality of fixed bearing steel pipes moves downward to be immersed in the pickling liquid; S3: At this time, the first drive motor (11) is started. When the output shaft of the first drive motor (11) rotates, the two mounting plates (5) rotate together under the transmission action of the chain (13) and the plurality of sprockets (12), thereby increasing the flow rate between the contact surface of the bearing steel pipe and the pickling liquid, and performing the pickling process; S4: After the pickling work is completed, the second drive motor (14) is started to control the slide plate (3) to move the two mounting plates (5) and the plurality of bearing steel pipes out of the pickling liquid, and then the plurality of first threaded rods (7) are rotated to separate the plurality of abutment plates (9) from the plurality of bearing steel pipes respectively. After the abutment pressure on the bearing steel pipes is released, the bearing steel pipes can be removed from the sleeve rod (6).

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