Vertical soak-off deflasher
By using a servo motor-driven transmission system and nitrogen bubbling technology in a vertical immersion decoction tank, combined with vibration and bubble separation mechanisms, the problem of difficult oxide film removal on product surfaces is solved, achieving a fast and effective decoction effect.
Patent Information
- Application Number
- CN202411798065.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2044-12-09
AI Technical Summary
In existing technologies, it is difficult to remove the oxide film on the product surface, the removal time is long, and it is difficult to effectively remove the dispersed and adsorbed oxide film.
A vertical immersion decoction tank is used, employing a servo motor-driven transmission system and nitrogen bubbling technology, combined with a vibration and bubble-separating mechanism. Nitrogen bubbling accelerates the removal of the oxide film, while vibration promotes the shedding of the oxide film.
It improves the removal efficiency of oxide film, shortens the removal time, and achieves rapid and effective removal of oxide film on product surface.
Smart Images

Figure CN119456549B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of immersion film removal tank technology, specifically a vertical immersion film removal tank. Background Technology
[0002] Immersion film removal tanks are equipment used in industrial production to remove or clean the film layer on the surface of products. They are commonly used to remove coatings, protective films, or thin films. By placing the object in the tank, the film layer attached to the surface of the object is dissolved, peeled off, or softened by chemical solutions or physical means, thereby achieving the purpose of film removal.
[0003] Chinese patent CN111155127A discloses an acid immersion device for removing oxide film from the surface of metal products, including a treatment box. The treatment box has a transmission cavity, and a central shaft is rotatably connected to the upper inner wall of the transmission cavity. A fixed rod is provided on the central shaft, and a carrier assembly is provided on the fixed rod. The carrier assembly includes loading tanks symmetrically located on the left and right sides of the fixed rod.
[0004] The invention employs a metal product storage structure that can be raised and lowered and slide in opposite directions, and an acid storage structure that ensures the acid soaks the metal product. The rotating and agitating structure ensures that the oxide film on the surface of the metal product is in full contact with the acid. At the same time, the orderly position switching under the intermittent gear engagement, combined with the lifting part, improves the efficiency of removing the oxide film from the metal product.
[0005] However, the above invention has the following shortcomings: during the product soaking process, it is still difficult to effectively remove the oxide film on the product surface by simply changing the position and raising and lowering the product. The oxide film that is easy to remove on the product surface will fall off, but the oxide film that is difficult to remove will be more dispersed and adsorbed on the product surface, making further removal difficult. Moreover, simply moving the product cannot quickly and effectively remove the film, and the film removal time is long.
[0006] Therefore, the present invention provides a vertical immersion decoction tank capable of quickly removing the film from a product. Summary of the Invention
[0007] To address the problems of difficult and time-consuming film removal on product surfaces in existing technologies, a vertical immersion film removal tank was designed.
[0008] The technical solution adopted by the present invention to solve its technical problem is as follows: a vertical immersion defilm removal tank, including a tank body, a fixed frame fixedly installed on the tank body, two servo motors provided on the fixed frame, and the output end of the servo motors passing through the tank body through bearings, a drive shaft fixedly installed on the output end of each servo motor, and the drive shaft passing through the tank body, two eccentric wheels fixedly installed at both ends of each drive shaft, multiple needle roller linear bearings movably installed on both sides of the tank body through multiple sliding bearings, a movable wheel interacting with the eccentric wheels movably installed at the bottom end of each needle roller linear bearing, and a rocker arm fixedly installed at the top end of each needle roller linear bearing, and also including a first bubble-blowing mechanism, a first bubble-dividing mechanism, a second bubble-blowing mechanism, and a second bubble-dividing mechanism;
[0009] Each of the rocker arms is provided with a hanging lug via a connecting part, and a hanging plate is fixedly installed on multiple hanging lugs, with the hanging plate located inside the groove.
[0010] The first bubbling mechanism includes a plurality of nitrogen bubbling tubes disposed on the tank, and each nitrogen bubbling tube is provided with a plurality of tube holes evenly distributed thereon;
[0011] The second bubbling mechanism includes a receiving shell fixedly installed at the ends of multiple nitrogen bubbling tubes, two delivery tubes connected to the receiving shell, and two side shells symmetrically fixedly installed on the tank. Each side shell is provided with a gas accumulation shell through a bearing, and the gas accumulation shell is connected to the end of the delivery tube at the corresponding position.
[0012] Two first bubble-splitting mechanisms are symmetrically arranged on the inner wall of the tank, and a second bubble-splitting mechanism is arranged on each of the accumulated gas shells, for separating large bubbles gathered by multiple nitrogen bubbling;
[0013] Each of the accumulated gas shells is provided with multiple pressure valves, each of the multiple pressure valves is fixedly installed with a nozzle, each of the nozzles is fixedly installed with a baffle, each of the accumulated gas shells is fixedly installed with a connecting rod, each of the connecting rods is hingedly installed with a short rod, and the short rod is hinged to a rocker arm;
[0014] The second bubble-dispersing mechanism includes two outer shells hinged to the accumulated gas shell. A first spring is connected to the inner side of each outer shell, and a telescopic block adapted to the outer shell is connected to the end of each first spring. The second bubble-dispersing mechanism also includes two limiting shells symmetrically fixed to the inner walls of both sides of the tank. A swing plate is movably installed between the two limiting shells. The swing plate is hinged to the two telescopic blocks respectively. The second bubble-dispersing mechanism also includes two support shafts disposed on the transmission shaft. The two support shafts are respectively hinged to the outer shells at corresponding positions.
[0015] Furthermore, the first bubble-separating mechanism includes two reciprocating lead screws mounted on the tank body via bearings, a second roller fixedly mounted at the end of each reciprocating lead screw, a first roller mounted on a servo motor, the first roller and the second roller interacting via a belt, a threaded block threadedly mounted on the reciprocating lead screw, a movable block movably mounted on the threaded block, and a separation plate fixedly mounted on the movable block.
[0016] Furthermore, the first bubble-dispensing mechanism also includes guide wheels fixedly installed on the movable block, and two guide shells are fixedly installed on the inner walls of both sides of the tank, with the guide shells disposed outside the guide wheels.
[0017] Furthermore, two force-bearing plates are symmetrically fixedly installed on the inner wall of the groove, and multiple circular shells are fixedly installed on each force-bearing plate.
[0018] Furthermore, multiple fixed housings are fixedly installed on each of the drive shafts, and a second spring is connected to the inner side of each fixed housing. The end of each second spring is connected to a striking block adapted to the fixed housing.
[0019] The beneficial effects of this invention are:
[0020] (1) The vertical immersion defilm removal tank of the present invention delivers nitrogen gas through an external device, so that the nitrogen gas moves to the bottom of the tank through a nitrogen bubbling pipe and is finally sprayed out evenly at intervals through holes punched in the bottom pipe wall of the tank. The sprayed nitrogen gas forms bubbles in the liquid in the tank and floats upward. The nitrogen bubbling accelerates the defilm removal process of the product. The nitrogen bubbles that are gathered together are separated by a separation plate to improve the defilm removal effect.
[0021] (2) In the vertical immersion defilm removal tank of the present invention, a portion of the nitrogen gas is fed into the inner side of the gas accumulation shell through the delivery pipe and is accumulated through the pressure valve. When the nitrogen gas in the gas accumulation shell is accumulated to a certain pressure value, it is sprayed out from the nozzle. The gas accumulation shell is repeatedly turned over in a small amplitude by the drive of the servo motor, and nitrogen gas bubbles are sprayed out in the tank, making the defilm removal of the product more effective and uniform. The nitrogen gas bubbles that are gathered together are separated by the swing plate, which improves the defilm removal effect.
[0022] (3) The vertical soaking decoction tank of the present invention is driven by a servo motor to rotate the transmission shaft, so that the transmission shaft drives the striking block to rotate along the inner side of the round shell through multiple fixed shells, so that the striking block strikes the force plate under the elastic support of the second spring, which vibrates the hanging plate and the liquid inside the tank, thereby promoting the autonomous removal of the oxide film on the product and further accelerating the decoction time. Attached Figure Description
[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0024] Figure 1 This is a three-dimensional structural diagram of the vertical immersion film removal tank of the present invention;
[0025] Figure 2 This is a three-dimensional structural diagram of the drive shaft of the vertical immersion film removal tank of the present invention;
[0026] Figure 3 This is a schematic diagram of the three-dimensional structure of the hanging plate of the vertical soaking and film removal tank of the present invention;
[0027] Figure 4 This is a schematic diagram of the internal three-dimensional structure of the vertical immersion film removal tank of the present invention.
[0028] Figure 5 This is an exploded three-dimensional structural diagram of the needle roller linear bearing in the vertical immersion film removal tank of the present invention.
[0029] Figure 6 This is a three-dimensional structural diagram of the nitrogen bubbling tube in the vertical immersion membrane removal tank of the present invention.
[0030] Figure 7 This is a schematic diagram of the exploded three-dimensional structure of the circular shell of the vertical immersion film removal tank of the present invention;
[0031] Figure 8 This is a three-dimensional exploded view of the guide shell structure of the vertical immersion film removal tank of the present invention.
[0032] Figure 9 This is an exploded three-dimensional structural diagram of the movable block of the vertical immersion film removal tank of the present invention;
[0033] Figure 10 This is a three-dimensional exploded view of the swing plate of the vertical immersion film removal tank of the present invention.
[0034] In the diagram: 1. Tank; 2. Fixing frame; 3. Servo motor; 4. Eccentric wheel; 5. Drive shaft; 6. Needle roller linear bearing; 7. Movable wheel; 8. Rocker arm; 9. Hanger lug; 10. Hanging plate; 11. Nitrogen bubbling tube; 15. First roller; 16. Belt; 19. Second roller; 20. Reciprocating screw; 21. Threaded block; 22. Movable block; 23. Separating plate; 24. Guide wheel; 25. Guide shell; 26. Side shell; 27. Connecting shell; 271. Conveying pipe; 28. Accumulated gas shell; 29. Partition; 30. Short rod; 31. Connecting rod; 32. Outer shell; 321. Support shaft; 33. First spring; 34. Telescopic block; 35. Swing plate; 36. Limiting shell; 37. Force plate; 38. Round shell; 39. Fixing shell; 40. Second spring; 41. Striking block. Detailed Implementation
[0035] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.
[0036] like Figures 1-10 As shown, the vertical immersion defilm removal tank of the present invention includes a tank body 1. A fixing frame 2 is fixedly installed on the tank body 1. Two servo motors 3 are provided on the fixing frame 2, and the output ends of the servo motors 3 pass through the tank body 1 through bearings. A transmission shaft 5 is fixedly installed on the output end of each servo motor 3, and the transmission shaft 5 passes through the tank body 1. Two eccentric wheels 4 are fixedly installed at both ends of each transmission shaft 5. Multiple needle roller linear bearings 6 are movably installed on both sides of the tank body 1 through multiple sliding bearings. A movable wheel 7 that interacts with the eccentric wheel 4 is movably installed at the bottom end of each needle roller linear bearing 6. A rocker arm 8 is fixedly installed at the top end of each needle roller linear bearing 6. A hanging lug 9 is provided on each rocker arm 8 through connecting parts. A hanging plate 10 is fixedly installed on multiple hanging lugs 9, and the hanging plate 10 is located inside the tank body 1.
[0037] Specifically, the staff fills the inside of the tank 1 with the film-removing solution in advance. The product is moved into the inside of the hanging plate 10 and clamped by the automated transport equipment. The hanging plate 10 and the product are then transported together to the inside of the tank 1 by the automated transport equipment, so that the hanging lug 9 is engaged with the swing rod. The servo motor 3 is controlled to run, so that the output end of the servo motor 3 drives the transmission shaft 5 to rotate. The transmission shaft 5 drives the eccentric wheel 4 to rotate, so that the eccentric wheel 4 drives the needle roller linear bearing 6 to swing up and down through the squeezing movable wheel 7. The needle roller linear bearing 6 drives the hanging plate 10 to swing up and down repeatedly inside the tank 1 through the swing rod 8 and the hanging lug 9. By repeatedly swinging the product, the film removal work of the product is improved.
[0038] In this embodiment, the first bubbling mechanism includes a plurality of nitrogen bubbling tubes 11 disposed on the tank body 1, each nitrogen bubbling tube 11 having a plurality of tube holes evenly opened thereon; two first bubble-dividing mechanisms are symmetrically disposed on the inner wall of the tank body 1, each first bubble-dividing mechanism including two reciprocating screws 20 disposed on the tank body 1 by bearings, each reciprocating screw 20 having a second roller 19 fixedly mounted at its end, a servo motor 3 having a first roller 15 disposed thereon, the first roller 15 and the second roller 19 interacting with each other by a belt 16, a threaded block 21 being threadedly mounted on the reciprocating screw 20, a movable block 22 being movably mounted on the threaded block 21, a separation plate 23 being fixedly mounted on the movable block 22, the first bubble-dividing mechanism also including a guide wheel 24 fixedly mounted on the movable block 22, two guide shells 25 being fixedly mounted on the inner walls of both sides of the tank body 1, and the guide shells 25 being disposed outside the guide wheels 24.
[0039] Specifically, the operator connects and fixes the external device to the housing 27, and supplies nitrogen gas through the external device. The nitrogen gas moves to the bottom of the tank 1 through the nitrogen bubbling pipe 11. During the nitrogen supply process, it is sprayed out through the pipe holes and finally sprayed out evenly at intervals through the perforated pipe wall at the bottom of the tank 1. The sprayed nitrogen gas forms bubbles in the liquid in the tank 1 and floats upward. The nitrogen bubbling accelerates the film removal process on the product. At the same time, the servo motor 3 is controlled to operate, and the output end of the servo motor 3 drives the first roller 15 to rotate. The first roller 15 drives the second roller 19 through the belt 16. The rotation causes the second roller 19 to drive the reciprocating screw 20 to rotate, and the threaded block 21, supported by the thread of the reciprocating screw 20, moves the separation plate 23 through the movable block 22. The movable block 22 can drive the guide wheel 24 to move along the inner side of the guide shell 25, so that the movable block 22 can support the separation plate 23 to move in a wave-like manner, so that the separation plate 23 can come into contact with the nitrogen bubbles floating up. The nitrogen bubbles that are gathered at both ends of the tank 1 are separated by the separation plate 23, improving the film removal effect. The nitrogen bubbles generated in the middle of the tank 1 are automatically separated by the movement of the hanging plate 10 and the product.
[0040] In this embodiment, the second bubbling mechanism includes a receiving shell 27 fixedly installed at the ends of multiple nitrogen bubbling pipes 11. Two delivery pipes 271 are connected to the receiving shell 27. Two side shells 26 are symmetrically fixedly installed on the tank 1. Each side shell 26 has a gas accumulation shell 28 mounted on it via a bearing. The gas accumulation shell 28 is connected to the end of the delivery pipe 271 at the corresponding position. Each gas accumulation shell 28 is provided with multiple pressure valves, and nozzles are fixedly installed on the multiple pressure valves. A partition 29 is fixedly installed on each nozzle. A connecting rod 31 is fixedly installed on each gas accumulation shell 28. A short rod 30 is hinged to each connecting rod 31 and is hinged to a rocker arm 8. Each gas accumulation shell 28 is provided with... The second bubble-separating mechanism is used to separate large bubbles accumulated from multiple nitrogen bubbles. The second bubble-separating mechanism includes two outer shells 32 hinged to the accumulated gas shell 28. A first spring 33 is connected to the inner side of each outer shell 32. A telescopic block 34 adapted to the outer shell 32 is connected to the end of each first spring 33. The second bubble-separating mechanism also includes two limiting shells 36 symmetrically fixedly installed on the inner walls of both sides of the tank 1. A swing plate 35 is movably installed between the two limiting shells 36. The swing plate 35 is hinged to the two telescopic blocks 34 respectively. The second bubble-separating mechanism also includes two support shafts 321 disposed on the transmission shaft 5. The two support shafts 321 are respectively hinged to the outer shells 32 at corresponding positions.
[0041] Specifically, a portion of the external nitrogen flows through the delivery pipe 271 to the inside of the gas accumulation shell 28, where it is compressed by a pressure valve. When the nitrogen in the gas accumulation shell 28 reaches a certain pressure value, it is ejected from the nozzle. The rocker arm 8, driven by the servo motor 3, swings up and down, causing the rocker arm 8 to repeatedly tumble the gas accumulation shell 28 with small amplitudes via the short rod 30 and connecting rod 31. This sprays nitrogen bubbles into the tank 1, making the film removal process more effective and uniform. When the gas accumulation shell 28 tumbles upward, the swing plate 35 moves around the support shaft 321 via the outer shell 32 and the telescopic block 34. The telescopic block 34 moves along the inside of the outer shell 32 under the elastic support of the first spring 33, causing the swing plate 35 to move downward to contact the nitrogen bubbles. The swing plate 35 separates the nitrogen bubbles that have gathered together, improving the film removal effect. When the gas accumulation shell 28 tumbles downward, the swing plate 35 moves upward accordingly.
[0042] In this embodiment, two force-bearing plates 37 are symmetrically fixedly installed on the inner wall of the groove 1. Multiple round shells 38 are fixedly installed on each force-bearing plate 37. Multiple fixed shells 39 are fixedly installed on each transmission shaft 5. A second spring 40 is connected to the inner side of each fixed shell 39. A striking block 41 adapted to the fixed shell 39 is connected to the end of each second spring 40.
[0043] Specifically, the servo motor 3 drives the transmission shaft 5 to rotate, which in turn drives the striking block 41 to rotate along the inner side of the circular shell 38 through multiple fixed shells 39. When the striking block 41 moves out of the inner side of the circular shell 38 through the opening, it strikes the force plate 37 under the elastic support of the second spring 40, which vibrates the liquid inside the hanging plate 10 and the tank 1 to promote the autonomous removal of the oxide film on the product and further accelerate the film removal time.
[0044] Working principle: The operator fills the inner side of tank 1 with the film-removing solution beforehand. The product is moved into the inner side of the hanging plate 10 and clamped using automated transport equipment. The hanging plate 10 and product are then transported together to the inner side of tank 1, where the hanging lug 9 engages with the swing arm. The servo motor 3 is then activated, causing the output of the servo motor 3 to drive the transmission shaft 5. The transmission shaft 5 drives the eccentric wheel 4, which in turn drives the needle roller linear bearing 6 up and down via the squeezing wheel 7. The needle roller linear bearing 6, through the swing arm 8 and the hanging lug 9, causes the hanging plate 10 to repeatedly swing up and down inside tank 1. This repeated swinging of the product improves the film removal process. Nitrogen gas is supplied via external equipment, moving through the nitrogen bubbling pipe 11 to the bottom of tank 1. Finally, the nitrogen gas is evenly sprayed out from the perforated pipe wall at the bottom of tank 1. The sprayed nitrogen gas then dissipates into the liquid inside tank 1. Bubbles form in the body and float upwards. Nitrogen bubbling accelerates the film removal process on the product. The nitrogen bubbles that have gathered together are separated by the separation plate 23. At the same time, a portion of the external nitrogen flows to the inside of the gas accumulation shell 28 through the delivery pipe 271 and is compressed by the pressure valve. When the nitrogen in the gas accumulation shell 28 reaches a certain pressure value, it is sprayed out from the nozzle. Driven by the servo motor 3, the gas accumulation shell 28 is repeatedly turned over in small amplitudes, spraying nitrogen bubbles into the tank 1, making the film removal of the product more effective and uniform. The nitrogen bubbles that have gathered together are separated by the swing plate 35. Then, the servo motor 3 drives the transmission shaft 5 to rotate. The transmission shaft 5 drives the striking block 41 to rotate along the inside of the circular shell 38 through multiple fixed shells 39. The striking block 41 strikes the force plate 37 under the elastic support of the second spring 40, which vibrates the hanging plate 10 and the liquid inside the tank 1 to promote the autonomous removal of the oxide film on the product.
[0045] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.
Claims
1. A vertical soaking and film removal tank, comprising a tank body (1), a fixed frame (2) fixedly installed on the tank body (1), two servo motors (3) provided on the fixed frame (2), and the output end of the servo motors (3) passing through the tank body (1) through bearings, a drive shaft (5) fixedly installed on the output end of each servo motor (3), and the drive shaft (5) passing through the tank body (1), two eccentric wheels (4) fixedly installed at both ends of each drive shaft (5), multiple needle roller linear bearings (6) movably installed on both sides of the tank body (1) through multiple sliding bearings, a movable wheel (7) interacting with the eccentric wheel (4) movably installed at the bottom end of each needle roller linear bearing (6), and a rocker arm (8) fixedly installed at the top end of each needle roller linear bearing (6), characterized in that: It also includes a first bubble-blowing mechanism, a first bubble-dividing mechanism, a second bubble-blowing mechanism, and a second bubble-dividing mechanism; Each of the rocker arms (8) is provided with a hanging lug (9) by means of a connecting part, and a hanging plate (10) is fixedly installed on multiple hanging lugs (9), and the hanging plate (10) is located inside the groove (1); The first bubbling mechanism includes a plurality of nitrogen bubbling tubes (11) provided on the tank (1), and each nitrogen bubbling tube (11) is provided with a plurality of tube holes evenly distributed; The second bubbling mechanism includes a receiving shell (27) fixedly installed at the ends of a plurality of nitrogen bubbling tubes (11), two delivery tubes (271) are connected to the receiving shell (27), and two side shells (26) are symmetrically fixedly installed on the tank (1). Each side shell (26) is provided with a gas accumulation shell (28) through a bearing, and the gas accumulation shell (28) is connected to the end of the delivery tube (271) at the corresponding position. Two first bubble-splitting mechanisms are symmetrically arranged on the inner wall of the tank (1), and a second bubble-splitting mechanism is provided on each of the accumulated gas shells (28) for separating large bubbles gathered by multiple nitrogen bubbling. Each of the gas accumulators (28) is provided with multiple pressure valves, each of the multiple pressure valves is fixedly installed with a nozzle, each of the nozzles is fixedly installed with a baffle (29), each of the gas accumulators (28) is fixedly installed with a connecting rod (31), each of the connecting rods (31) is hingedly installed with a short rod (30), and the short rod (30) is hinged to one of the rocker arms (8); The second bubble-distributing mechanism includes two outer shells (32) hinged to the accumulated gas shell (28). Each outer shell (32) is connected to a first spring (33) on its inner side. Each first spring (33) is connected to a telescopic block (34) adapted to the outer shell (32) at its end. The second bubble-distributing mechanism also includes two limiting shells (36) symmetrically fixed to the inner walls on both sides of the tank (1). A swing plate (35) is movably installed between the two limiting shells (36). The swing plate (35) is hinged to the two telescopic blocks (34) respectively. The second bubble-distributing mechanism also includes two support shafts (321) set on the transmission shaft (5). The two support shafts (321) are respectively hinged to the outer shells (32) at corresponding positions.
2. The vertical immersion film removal tank according to claim 1, characterized in that: The first bubble-separating mechanism includes two reciprocating screws (20) mounted on the tank (1) via bearings. A second roller (19) is fixedly mounted at the end of each reciprocating screw (20). A first roller (15) is mounted on a servo motor (3). The first roller (15) and the second roller (19) interact via a belt (16). A threaded block (21) is threaded onto the reciprocating screw (20). A movable block (22) is movably mounted on the threaded block (21). A separation plate (23) is fixedly mounted on the movable block (22).
3. The vertical immersion film removal tank according to claim 2, characterized in that: The first bubble-dispensing mechanism also includes a guide wheel (24) fixedly installed on the movable block (22), and two guide shells (25) are fixedly installed on the inner walls of both sides of the tank (1), and the guide shells (25) are located outside the guide wheel (24).
4. The vertical immersion film removal tank according to claim 3, characterized in that: Two force-bearing plates (37) are symmetrically fixedly installed on the inner wall of the trough (1), and multiple round shells (38) are fixedly installed on each of the force-bearing plates (37).
5. The vertical immersion film removal tank according to claim 4, characterized in that: Multiple fixed housings (39) are fixedly installed on each of the drive shafts (5). A second spring (40) is connected to the inner side of each fixed housing (39). A striking block (41) adapted to the fixed housing (39) is connected to the end of each second spring (40).
Citation Information
Patent Citations
Acid liquor soaking device for removing oxidation film on surface of metal product
CN111155127A
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CN113463106A
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CN118719695A