EP method for 316L material packaging barrel

Abstract

The invention relates to an EP method for a 316L material packaging barrel, and relates to the technical field of surface treatment. The EP method for the 316L material packaging barrel comprises the following steps that upper end welding is conducted, specifically, the upper end of the packaging barrel is welded; polishing the upper end: polishing and polishing the upper end of the welded packaging barrel; upper end EP treatment, wherein the upper end of the packaging barrel is subjected to electrolytic polishing and grinding (EP) treatment; welding the lower end: transporting the packaging barrel subjected to EP treatment at the upper end to the vicinity of another welding device, and then welding the lower sealing head of the packaging barrel; and lower end spraying: after the lower end is welded, the packaging barrel is transported into spraying equipment through packaging barrel transportation equipment, then FPA coating is sprayed to the lower end socket of the packaging barrel, and the thickness of the FPA coating is larger than or equal to 0.5 mm. The packaging barrel has the advantages that the roughness of the lower sealing head of the packaging barrel is reduced, and the probability of secondary pollution to products in the packaging barrel due to precipitation of particles or ions in the packaging barrel after EP is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of surface treatment, and particularly relates to an EP method for a packaging barrel made of 316L material. Background Art

[0002] With the continuous development of the social economy and the increasing improvement of the scientific and technological level, the semiconductor industry in our country is also booming, and the quality requirements for ultra-clean and high-purity alcohol products are constantly increasing. Therefore, the demand for packaging barrels for ultra-pure alcohol products by manufacturers is also increasing day by day. Before the conventional stainless steel SUS packaging barrel is put into use, it needs to be subjected to electrolytic polishing and grinding (EP) to electrolytically deposit a layer of Cr protective layer on the surface. After covering other metals such as Fe and Ni on the surface of the SUS barrel, it can be put into use to ensure the quality of the product.

[0003] In view of the above related technologies, due to the existing technology, generally, the single-sided welding and double-sided forming method is used to fix between the barrel body and the lower head of the packaging barrel. Therefore, weld beads will be generated during the welding process due to pores, immersion, and defects, etc. And before the electrolytic polishing and grinding (EP), generally, only simple grinding can be carried out inside the packaging barrel in the existing technology. This makes the roughness of the lower head of the packaging barrel too large, so that the protective layer after EP is difficult to completely cover, which further increases the probability of precipitation of particles or ions such as Fe and Ni in the packaging barrel, and further increases the probability of secondary pollution of the product in the packaging barrel by the precipitated particles or ions such as Fe and Ni. Therefore, it needs to be improved. Summary of the Invention

[0004] In order to reduce the roughness at the lower head of the packaging barrel, reduce the generation of precipitation of particles or ions in the packaging barrel after EP, and the probability of secondary pollution of the product in the packaging barrel, the present application provides an EP method for a packaging barrel made of 316L material.

[0005] An EP method for a packaging barrel made of 316L material provided by the present application adopts the following technical solutions: An EP method for a packaging barrel made of 316L material includes the following steps: Upper-end welding: Weld the upper end of the packaging barrel through a welding device. Upper-end grinding: Transport the packaging barrel after the upper-end welding to a processing device through a packaging barrel transportation device, and then polish and grind the upper end of the welded packaging barrel. Upper-end EP treatment: After the upper head grinding is completed, then perform electrolytic polishing and grinding (EP) treatment on the upper end of the packaging barrel through a processing device. Lower-end welding: Transport the packaging barrel after the upper-end EP treatment to near another welding device through a packaging barrel transportation device, and then weld the lower head of the packaging barrel through a welding device. Lower-end spraying: After the lower end is welded, the packaging barrel is transported by the packaging barrel transportation equipment to the spraying equipment, and then the lower head of the packaging barrel is sprayed with FPA coating, and the thickness of the FPA coating is greater than or equal to 0.5 mm.

[0006] By adopting the above technical solution, compared with the prior art, before electrolytic polishing and grinding (EP) of the packaging barrel, only simple grinding can be carried out inside the packaging barrel, resulting in too large roughness of the lower head of the packaging barrel and being difficult to meet the standard before EP of the SUS packaging barrel; through the treatment of lower-end spraying in this application, the lower head after welding can be sprayed with FPA coating, so that a uniform coating is covered on the lower head, and the thickness of the coating is greater than or equal to 0.5 mm, so that a pore-free film is formed on the surface. Since the PFA coating is a copolymer coating of tetrafluoroethylene and perfluoroalkyl vinyl ether, it has the advantages of low friction, extremely high chemical resistance, and heat resistance (-200 °C - 260 °C). Therefore, the surface of the coating has good smoothness and corrosion resistance, effectively reducing the roughness of the lower head of the packaging barrel, and then effectively inhibiting the precipitation of particles or ions such as Fe and Ni in the packaging barrel, reducing the probability of secondary pollution of the product by the precipitated particles or ions; at the same time, the electrolytic polishing and grinding (EP) treatment of the upper head of the packaging barrel in this application makes the surface roughness Ra < 0.2 UM at the upper head, and a Cr protective layer is electrolytically deposited on the surface, covering other metals such as Fe and Ni on the SUS barrel surface, reducing the generation of particles and ions, and then reducing the probability of secondary pollution of the product in the barrel.

[0007] Preferably, the lower-end spraying step is specifically as follows: First, sandblast the lower head, and after sandblasting, clean it by vacuuming. After cleaning, preheat the lower head, and after preheating, perform the first spraying. After the first spraying is completed, cool the lower head. After cooling, perform the second spraying. After the second spraying is completed, perform high-temperature sintering, and finally cool it again, so that the thickness of the FPA coating is greater than or equal to 0.5 mm, and then a pore-free film is formed on the surface of the lower head.

[0008] By adopting the above technical solution, the specific setting of the lower-end spraying step enables the FPA material to be evenly distributed at the lower head of the packaging barrel, thus effectively increasing the smoothness of the surface at the lower head; at the same time, it can also reduce the probability of the FPA coating falling off and ensure the stability of the coating.

[0009] Preferably, the packaging barrel transportation equipment includes an equipment body, a transportation mechanism, a clamping mechanism and a rotating mechanism. The transportation mechanism is used to transport the packaging barrel along the length direction of the equipment body, so that the packaging barrel passes through one of the welding equipment, the processing equipment, and the other welding equipment in sequence and reaches the spraying equipment. The clamping mechanism is used to clamp the packaging barrel from the transportation mechanism, and the rotating mechanism is used to drive the packaging barrel to rotate after being clamped by the clamping mechanism.

[0010] By adopting the above technical solution, the setting of the packaging barrel transportation equipment enables the transportation mechanism to transport the packaging barrel, so that the packaging barrel passes through one of the welding equipment, the processing equipment, and the other welding equipment to the spraying equipment, so that the transportation mechanism can realize the whole process of transportation of the packaging barrel during the welding and EP process. At the same time, the setting of the clamping mechanism and the rotating mechanism can make the packaging barrel rotate, thereby facilitating the welding of the end of the packaging barrel by the welding equipment.

[0011] Preferably, the rotating mechanism includes a moving frame, a moving assembly, a rotating ring and a rotating assembly. The moving frame is slidably connected to the equipment body, and the sliding direction is the same as the transport direction of the transport mechanism. The moving assembly is used to drive the moving frame to slide. The rotating ring is rotatably connected to the moving frame and is mounted on the packaging barrel. The rotating assembly is used to drive the rotating ring to drive the packaging barrel to rotate together.

[0012] By adopting the above technical solution and the specific setting of the rotating mechanism, when the packaging barrel is clamped by the clamping mechanism, the moving assembly can drive the moving frame to move, so that the rotating ring is sleeved on the packaging barrel, and the rotating ring can drive the packaging barrel to rotate together under the drive of the rotating assembly, thereby realizing the driving of the packaging barrel to rotate, which effectively facilitates the welding of the packaging barrel by the welding equipment.

[0013] Preferably, the clamping mechanism includes a clamping assembly and a lifting assembly, the clamping assembly includes a clamping frame and a driving member, the number of the clamping frames is set to be several, and they are respectively located on opposite sides of the packaging barrel along its own axial direction, the top end of each of the clamping frames is rotatably connected to the equipment body, the driving member is used to drive each clamping frame to rotate, and the lifting assembly is used to drive the corresponding packaging barrel to lift up to separate from the transportation mechanism.

[0014] By adopting the above technical solution and the specific setting of the clamping mechanism, when the packaging barrel is transported to a predetermined position by the transport mechanism, the lifting assembly can drive the packaging barrel to lift upward, thereby making the packaging barrel separate from the transport mechanism. After the packaging barrel is lifted, the clamping frame can clamp the packaging barrel driven by the driving member, thereby making the packaging barrel separate from the lifting assembly, which effectively facilitates the rotating mechanism to drive the packaging barrel to rotate.

[0015] Preferably, the lifting assembly includes a lifting frame and a linkage member. The lifting frame is slidably connected to the equipment body, and the sliding direction is the height direction of the equipment body. The linkage member is used to drive the lifting frame to slide.

[0016] By adopting the above technical solution, the setting of the lifting assembly enables the lifting frame to slide upward under the drive of the linkage member, so that the lifting roller pushes the packaging barrel to move upward, thereby realizing the lifting of the packaging barrel.

[0017] Preferably, the rotating mechanism further includes a redirecting assembly. The redirecting assembly includes a redirecting frame and a redirecting member. The redirecting frame is slidably connected to the equipment body, and the sliding direction is the same as that of the lifting frame. The redirecting frame drives the lifting frame to slide through the redirecting member, and the moving frame drives the redirecting frame to slide through the linkage member.

[0018] By adopting the above technical solution, the setting of the redirecting assembly enables the moving frame to drive the redirecting frame to slide through the linkage member during the sliding process, so that the redirecting frame drives the lifting frame to slide through the redirecting member, and the sliding directions of the redirecting frame and the lifting frame are opposite, thereby realizing the drive of the lifting frame and the linkage between the lifting frame and the moving frame, effectively saving the active device for driving the lifting frame to slide.

[0019] Preferably, the linkage member includes a linkage frame. One end of the linkage frame is rotatably connected to the redirecting frame, and the other end is rotatably connected to the moving frame.

[0020] By adopting the above technical solution, the setting of the linkage frame enables the moving frame to drive the linkage frame to move when the moving frame slides, and then enables the linkage frame to drive the redirecting frame to slide, realizing the drive of the redirecting frame and effectively realizing the linkage between the moving frame and the redirecting frame.

[0021] Preferably, the rotating mechanism further includes a fixing assembly. The fixing assembly includes a fixing frame, a driving ring, a driving member and a fixing member. The number of the fixing frames is set to be several. Each fixing frame is slidably connected to the rotating ring, and when the rotating ring is sleeved on the packaging barrel, the packaging barrel is located on the sliding path of each fixing frame. The driving ring is rotatably connected to the rotating ring. The driving ring drives each fixing frame to slide through the driving member, and the fixing member is used to drive the driving ring to rotate.

[0022] By adopting the above technical solution, the arrangement of the fixing components enables the fixing member to drive the driving ring to rotate when the rotating ring is sleeved outside the packaging barrel. As a result, the driving ring drives each fixing frame to slide through the fixing member, causing each fixing frame to approach the packaging barrel and finally abut against the outer side wall of the packaging barrel, thereby achieving the clamping of the packaging barrel, fixing the packaging barrel to the rotating ring, and enabling the rotating ring to smoothly drive the packaging barrel to rotate, effectively facilitating the driving of the rotation of the packaging barrel.

[0023] Preferably, the driving member includes a plurality of driving frames corresponding to the clamping frames. One end of each driving frame is rotatably connected to the driving ring, and the other end is rotatably connected to the corresponding clamping frame.

[0024] By adopting the above technical solution, the arrangement of the driving frames enables each driving frame to rotate relative to itself when the driving ring rotates, and further enables each driving frame to drive the corresponding clamping frame to slide, realizing the driving of each clamping frame, and effectively facilitating the clamping of the packaging barrel.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. For the treatment of the lower-end spraying, it is possible to spray FPA coating on the lower head after welding, so that a uniform coating is formed on the lower head, and the thickness of the coating is greater than or equal to 0.5 mm, thus forming a pore-free film on the surface. Since the PFA coating is a copolymer coating of tetrafluoroethylene and perfluoroalkyl vinyl ether, which has the advantages of low friction, extremely high chemical resistance, and heat resistance (-200°C - 260°C), the surface of the coating has good smoothness and corrosion resistance, effectively reducing the roughness of the lower head of the packaging barrel, and further effectively inhibiting the precipitation of particles or ions such as Fe and Ni in the packaging barrel, reducing the probability of secondary pollution of the product by the precipitated particles or ions; at the same time, the electrolytic polishing and grinding (EP) treatment of the upper head of the packaging barrel in the present application makes the surface roughness Ra of the upper head <0.2 UM, and a Cr protective layer is electrolytically deposited on the surface, covering other metals such as Fe and Ni on the SUS barrel surface, reducing the generation of particles and ions, and further reducing the probability of secondary pollution of the product in the barrel; 2. The arrangement of the packaging barrel transportation equipment enables the transportation mechanism to transport the packaging barrel, so that the packaging barrel passes through one of the welding equipment, the processing equipment, and the other welding equipment and reaches the spraying equipment, and further enables the transportation mechanism to achieve the whole-process transportation of the packaging barrel during the welding and EP processes. At the same time, the arrangement of the clamping mechanism and the rotating mechanism enables the packaging barrel to rotate, facilitating the welding of the end of the packaging barrel by the welding equipment; 3. The specific setting of the rotating mechanism enables the moving component to drive the moving frame to move after the packaging barrel is clamped by the clamping mechanism, so that the rotating ring is sleeved on the packaging barrel, and the rotating ring can drive the packaging barrel to rotate together under the drive of the rotating component, thereby realizing the drive of the rotation of the packaging barrel, which effectively facilitates the welding of the packaging barrel by the welding equipment. Brief Description of the Drawings

[0026] Figure 1 It is a schematic diagram showing the overall packaging barrel transportation equipment in Embodiment 2 of the present application.

[0027] Figure 2 It is a schematic diagram showing the structure of the transportation mechanism in Embodiment 2 of the present application.

[0028] Figure 3 It is a schematic diagram showing the structure of the rotating component in Embodiment 2 of the present application.

[0029] Figure 4 It is a schematic diagram showing the structure of the rotating ring in Embodiment 2 of the present application.

[0030] Description of the reference numerals: 1, equipment body; 2, transportation mechanism; 21, transportation frame; 22, transportation rollers; 3, clamping mechanism; 31, clamping component; 311, clamping frame; 312, driving member; 313, rotating roller; 32, lifting component; 321, lifting frame; 322, linkage member; 3221, linkage frame; 4, rotating mechanism; 41, moving frame; 42, moving component; 43, rotating ring; 44, rotating component; 441, rotating motor; 442, rotating gear; 443, rotating toothed ring; 45, fixing component; 451, fixing frame; 452, driving ring; 453, driving member; 4531, driving frame; 454, fixing member; 46, redirecting component; 461, redirecting frame; 462, redirecting member; 4621, redirecting gear; 4622, redirecting rack; 5, embedding groove. Detailed Description of the Embodiment

[0031] The following will further describe the present application in detail Figures 1-4 with reference to the accompanying drawings.

[0032] Embodiment 1: Embodiment 1 of the present application discloses an EP method for a 316L material packaging barrel. The EP method for a 316L material packaging barrel includes the following steps: S1. Welding at the upper end: Weld the upper end of the packaging barrel through a welding device. S2. Grinding at the upper end: Transport the packaging barrel with the upper end welded to a processing device through the packaging barrel transportation equipment, and then polish and grind the upper end of the welded packaging barrel. S3. Upper-end EP treatment: After the upper head is polished, the upper end of the packaging barrel is subjected to electrolytic polishing and grinding (EP) treatment by a processing device, so that the surface roughness Ra at the upper head is <0.2 UM, and a Cr protective layer is electrolytically deposited on the surface to cover other metals such as Fe and Ni on the SUS barrel surface; S4. Lower-end welding: Through the packaging barrel transportation device, the packaging barrel after the upper-end EP treatment is transported to the vicinity of another welding device, and then the lower head of the packaging barrel is welded by the welding device; S5. Lower-end spraying: After the lower end is welded, the packaging barrel is transported into the spraying device by the packaging barrel transportation device, and then the lower head is sandblasted. After sandblasting, it is cleaned by dust suction. After cleaning, the lower head is preheated. After preheating, the lower head of the packaging barrel is sprayed with FPA coating for the first time. After the first spraying is completed, the lower head is cooled. After cooling, secondary spraying is carried out. After secondary spraying is completed, high-temperature sintering is carried out. Finally, it is cooled again. Finally, the thickness of the FPA coating is greater than or equal to 0.5 mm, so that a pore-free film is formed on the surface of the lower head.

[0033] Example 2: Embodiment 2 of this application discloses a packaging barrel transportation device, and the packaging barrel transportation device is the packaging barrel transportation device in Embodiment 1. Refer to Figure 1 and Figure 2 , this packaging barrel transportation device includes a device body 1, a transportation mechanism 2, a clamping mechanism 3 and a rotating mechanism 4. The transportation mechanism 2 is used to transport the packaging barrel along the length direction of the device body 1, so that the packaging barrel passes through one welding device, a processing device, and another welding device in sequence and reaches the spraying device. The clamping mechanism 3 is used to pick up the packaging barrel from the transportation mechanism 2, and the rotating mechanism 4 is used to drive the packaging barrel picked up by the clamping mechanism 3 to rotate.

[0034] Refer to Figure 1 and Figure 2 , the transportation mechanism 2 includes two transportation frames 21, and each transportation frame 21 is fixedly installed at the bottom of the device body 1 by bolts. The two transportation frames 21 are respectively located on the opposite sides of the packaging barrel along its axis direction. The length direction of each transportation frame 21 is the length direction of the device body 1, and the top wall of each transportation frame 21 is inclined downward obliquely towards the direction close to the other transportation frame 21.

[0035] Refer to Figure 2, on the top wall of each transport rack 21, a number of transport rollers 22 are provided, and the transport rollers 22 are arranged along the length direction of the transport rack 21. Each transport roller 22 is rotatably connected to the corresponding transport rack 21, and the rotation axis of each transport roller 22 is perpendicular to the length direction of the transport rack 21, so that when the packaging barrel is placed on the transport roller 22, the transport roller 22 can drive the packaging barrel to rotate by rotating.

[0036] Refer to Figure 2 , on each transport rack 21, a device for driving each transport roller 22 on itself to rotate is provided. In the implementation of this application, this device is a combined structure of a reduction motor and a pulley, so that when the output shaft of the reduction motor rotates, it can drive each pulley to rotate through the belt, and then each pulley drives the transport roller 22 fixedly connected to itself to rotate.

[0037] Refer to Figure 1 and Figure 2 , in the equipment body 1, both the clamping mechanism 3 and the rotating mechanism 4 are provided with two, and they are arranged in one-to-one correspondence. In the embodiment of this application, two welding devices are also provided on the equipment body 1. The two welding devices are in one-to-one correspondence with the two clamping mechanisms 3, and both are used for welding the packaging barrel. In the embodiment of this application, a processing device is also provided between the two clamping mechanisms 3. A grinding mechanism and an EP processing mechanism are arranged in the processing device to grind and perform EP processing on the upper head of the packaging barrel after welding.

[0038] Refer to Figure 2 and Figure 3 , each clamping mechanism 3 includes a clamping component 31 and a lifting component 32. Each lifting component 32 includes a lifting frame 321 and a linkage member 322. The bottom of each lifting frame 321 is slidably connected to the equipment body 1 through a slide rail, and the sliding direction is the vertical direction (i.e., the height direction of the equipment body 1). The top of each lifting frame 321 is recessed downward to form an arc shape to adapt to the direction of the packaging barrel. The linkage member 322 is used to drive the corresponding lifting frame 321 to slide.

[0039] Refer to Figure 2 , each clamping component 31 includes a clamping frame 311 and a driving member 312. The clamping frames 311 in each clamping component 31 are both provided with two. The top heights of the two clamping frames 311 are both greater than the top height of the packaging barrel. The two clamping frames 311 are respectively located on the opposite sides of the packaging barrel along its own axis direction. The top of each clamping frame 311 is rotatably connected to the equipment body 1 through a pin shaft.

[0040] Refer to Figure 2In the embodiment of the present application, the driving member 312 is configured as a combination structure of a reduction motor and a gear set. The reduction motor is fixedly mounted on the equipment body 1, and the output shaft is used to drive one gear in the gear set to rotate. The other gears in the gear set are respectively fixedly mounted on the corresponding two clamping frames 311 to drive the two clamping frames 311 to rotate.

[0041] Reference Figure 2 Each clamping frame 311 is configured as an arc-shaped frame structure to better adapt to the side wall shape of the packaging barrel. Each clamping frame 311 is provided with a plurality of rotating rollers 313, which are distributed along the length direction of the clamping frame 311, and each rotating roller 313 is rotatably connected to the corresponding clamping frame 311 through a pin. When the clamping frame 311 has finished clamping the packaging barrel, the side wall of the rotating roller 313 abuts against the side wall of the packaging barrel, so that the packaging barrel can be rotated gradually when the two clamping frames 311 are rotated, thereby reducing the friction between the clamping frame 311 and the packaging barrel.

[0042] Reference Figure 2 In the embodiment of the present application, the bottom height of the clamping frame 311 when clamping the packaging barrel is greater than the top height of the lifting frame 321 at this time, so that the packaging barrel is completely separated from the lifting frame 321. That is, in the initial state, the lifting frame 321 is located below the packaging barrel, and when the linkage member 322 drives the lifting frame 321 to move upward, the top of the lifting frame 321 gradually contacts the bottom of the packaging barrel, thereby gradually driving the packaging barrel to move upward and separate from the transport roller 22.

[0043] Reference Figure 2 When the lifting frame 321 moves to a predetermined height, the clamping frame 311 rotates under the drive of the driving member 312. When the rotating roller 313 at the lowest point of the bottom of the clamping frame 311 contacts the side wall of the packaging barrel, the rotating roller 313 drives the packaging barrel to move upward for a certain distance and clamps the packaging barrel, so that the packaging barrel is separated from the lifting frame 321, thereby achieving the clamping of the packaging barrel.

[0044] Reference Figure 2 and Figure 3 Each rotating mechanism 4 includes a moving frame 41, a moving assembly 42, a rotating ring 43, a rotating assembly 44, and a fixed assembly 45. Each moving frame 41 is slidably connected to the device body 1 through a slide rail, and the sliding direction is set to the length direction of the device body 1.

[0045] Reference Figure 2 and Figure 3, in the embodiments of the present application, each moving component 42 is set as a combined structure of a servo motor and a lead screw (the thread of the lead screw is not drawn in the attached drawings). The servo motor is fixedly installed on the equipment body 1, and the output shaft is fixedly connected to the lead screw through a coupling. The length direction of the lead screw is the length direction of the equipment body 1, and both ends are rotatably connected to the equipment body 1 through bearings. One end of the lead screw passes through the corresponding moving frame 41 and is threadedly connected to the corresponding moving frame 41 to drive the rotation of the moving frame 41.

[0046] Refer to Figure 3 and Figure 4 , the top of each moving frame 41 is set as a circular ring shape, and an embedding groove 5 is opened on one side wall thereof. One side of each rotating ring 43 is embedded in the embedding groove 5 on the corresponding moving frame 41 and is rotatably connected to the corresponding moving frame 41. The other side of each rotating ring 43 extends out of the embedding groove 5, and the inner diameter of each rotating ring 43 is larger than the diameter of the packaging barrel.

[0047] Refer to Figure 3 , each rotating component 44 includes a rotating motor 441, a rotating gear 442 and a rotating toothed ring 443. Each rotating motor 441 is fixedly installed on the corresponding moving frame 41 through bolts. Each rotating gear 442 is fixedly sleeved on the output shaft of the corresponding rotating motor 441 so that the rotating motor 441 drives the rotating gear 442 to rotate.

[0048] Refer to Figure 3 and Figure 4 , each rotating toothed ring 443 is fixedly connected to one end of the corresponding rotating ring 43 extending out of the embedding groove 5, and teeth are provided on the outer side of each rotating toothed ring 443. Each rotating toothed ring 443 is meshed with the corresponding rotating gear 442 to drive the rotating ring 43 through the rotating gear 442 and the rotating toothed ring 443.

[0049] Refer to Figure 2 and Figure 3 , each fixing component 45 includes a fixing frame 451, a driving ring 452, a driving member 453 and a fixing member 454. In the embodiments of the present application, the number of fixing frames 451 in each fixing component 45 is set to four and is circumferentially and equally angularly distributed along the axis of the rotating ring 43. Each fixing frame 451 is slidably connected to the corresponding rotating ring 43 through a slide rail, and the straight line where the sliding direction is located passes through the center of the rotating ring 43.

[0050] Refer to Figure 3, each driving ring 452 is rotatably connected to the corresponding rotating ring 43 through a bearing and is coaxially arranged. Each driving member 453 includes a plurality of driving frames 4531. In the embodiment of the present application, the number of driving frames 4531 in each driving member 453 is set to four. The four driving frames 4531 are circumferentially distributed along the axis of the driving ring 452 and are arranged in one-to-one correspondence with the fixed frames 451.

[0051] Refer to Figure 3 , one end of each driving frame 4531 is rotatably connected to the corresponding driving ring 452 through a pin shaft, and the other end of each driving frame 4531 is rotatably connected to the corresponding fixed frame 451 through a pin shaft. Thus, when the driving ring 452 rotates, it can drive the corresponding fixed frame 451 to slide through the driving frame 4531, realizing the driving of the four fixed frames 451.

[0052] Refer to Figure 3 , in the embodiment of the present application, the fixing member 454 is set as a plurality of rotating cylinders. The cylinder body of each rotating cylinder is rotatably connected to the corresponding rotating ring 43 through a support and a pin shaft, and the piston rod of each rotating cylinder is rotatably connected to the corresponding driving ring 452 through a pin shaft. Thus, the rotating cylinder drives the corresponding driving ring 452 to rotate, realizing the driving of the driving ring 452.

[0053] Refer to Figure 2 and Figure 3 , each rotating mechanism 4 includes a redirecting assembly 46. Each redirecting assembly 46 includes a redirecting frame 461 and a redirecting member 462. Each redirecting frame 461 is slidably connected to the equipment body 1, and the sliding direction is the vertical direction, and they are all located between the corresponding two moving frames 41. Each linkage member 322 includes two linkage frames 3221. The two linkage frames 3221 are respectively located on the opposite sides of the corresponding moving frame 41. One end of each linkage frame 3221 is rotatably connected to the corresponding moving frame 41 through a pin shaft, and the other end is rotatably connected to the corresponding redirecting frame 461 through a pin shaft.

[0054] Refer to Figure 2 and Figure 3 , each redirecting member 462 includes a redirecting gear 4621 and two redirecting racks 4622. One of the redirecting racks 4622 is fixedly connected to the corresponding redirecting frame 461, and the other redirecting rack 4622 is fixedly connected to the corresponding lifting frame 321. The redirecting gear 4621 is located between the two redirecting racks 4622. Each redirecting rack 4622 is slidably connected to the equipment body 1 through a slide rail, and the sliding direction is the vertical direction to realize the linkage between the redirecting frame 461 and the lifting frame 321.

[0055] Refer to Figure 2 and Figure 3, in the initial state, the rotating ring 43 is not sleeved on the packaging barrel. At this time, the moving frame 41 is located on one side of the packaging barrel, and the lifting frame 321 is located at the bottom end of its sliding path. When the moving assembly 42 drives the moving frame 41 to gradually approach the packaging barrel, the moving frame 41 drives the corresponding redirecting frame 461 downward through the driving frame 4531. At this time, the redirecting frame 461 drives the corresponding lifting frame 321 to move upward through the redirecting rack 4622 and the redirecting gear 4621, realizing the linkage between the moving frame 41 and the lifting frame 321.

[0056] Referring to Figure 2 and Figure 3 , when the lifting frame 321 contacts the packaging barrel and drives the packaging barrel to move upward to the specified position, the moving assembly 42 stops driving the moving frame 41. Thereafter, the clamping frame 311 clamps the packaging barrel under the drive of the driving member 312. At this time, the packaging barrel is separated from the lifting frame 321. Thereafter, the moving assembly 42 continues to drive the moving frame 41 to slide, so that the moving frame 41 is sleeved outside the end of the packaging barrel. Then, the fixing member 454 drives the driving ring 452 to rotate. The driving ring 452 drives the corresponding fixing frame 451 to slide through the driving frame 4531, and the end of the fixing frame 451 abuts against the packaging barrel, realizing the fixation between the packaging barrel and the rotating ring 43. Thereafter, the rotating member drives the packaging barrel to rotate through the rotating gear 442 and the rotating tooth ring 443, facilitating the welding of the packaging barrel by the welding equipment.

[0057] Referring to the figure, in the embodiment of the present application, a spraying device is provided at one end of the equipment body 1. The spraying device is attached to the equipment body 1, and the transport frame 21 extends into the spraying device, so that the transport mechanism 2 in the equipment body 1 can transport the packaging barrel into the spraying device. This spraying device is used to spray FPA coating on the lower head of the packaging barrel after the lower end welding is completed.

[0058] Referring to the figure, in the embodiment of the present application, the spraying device may include a steering transport mechanism, which may be set as a robotic arm for clamping and placing the packaging barrel after the lower end welding on the transport roller 22. A spraying mechanism, a heating mechanism, a cooling mechanism and a sintering mechanism may also be provided in the spraying device to realize the steering transport, spraying, heating, cooling and sintering operations of the packaging barrel, so as to realize the spraying of the lower head of the packaging barrel. This spraying device is a prior art, so it will not be elaborated here.

[0059] The implementation principle of Embodiment 2 of this application for a packaging barrel transportation device is as follows: When the transportation mechanism 2 transports the packaging barrel to the designated welding area, the moving component 42 drives the moving frame 41 to gradually approach the packaging barrel. At this time, the moving frame 41 drives the corresponding redirecting frame 461 to move downward through the driving frame 4531. At this time, the redirecting frame 461 drives the corresponding lifting frame 321 to move upward through the redirecting rack 4622 and the redirecting gear 4621, realizing the linkage between the moving frame 41 and the lifting frame 321.

[0060] When the lifting frame 321 contacts the packaging barrel and drives the packaging barrel to move upward to the designated position, the moving component 42 stops driving the moving frame 41. After that, the clamping frame 311 clamps the packaging barrel under the drive of the driving member 312. At this time, the packaging barrel is separated from the lifting frame 321. After that, the moving component 42 continues to drive the moving frame 41 to slide, so that the moving frame 41 is sleeved outside the end of the packaging barrel. Then, the fixing member 454 drives the driving ring 452 to rotate. The driving ring 452 drives the corresponding fixing frame 451 to slide through the driving frame 4531, and makes the end of the fixing frame 451 abut against the packaging barrel, realizing the fixation between the packaging barrel and the rotating ring 43. After that, the rotating member drives the packaging barrel to rotate through the rotating gear 442 and the rotating tooth ring 443, so as to facilitate the welding equipment to weld the packaging barrel.

[0061] The above are all the preferred embodiments of this application. The protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. An EP method for a packaging barrel made of 316L material, characterized in that: The steps include: Upper end welding: Use welding equipment to weld the upper end of the packaging barrel; Upper end grinding: The upper end of the packaging barrel after welding is transported to the processing equipment through the packaging barrel transportation equipment, and then the upper end of the packaging barrel after welding is polished; Upper end EP treatment: After the upper head is polished, the upper end of the packaging barrel is subjected to electrolytic polishing (EP) treatment through processing equipment; Lower end welding: The packaging barrel after EP treatment at the upper end is transported to the vicinity of another welding equipment through the packaging barrel transportation equipment, and then the lower head of the packaging barrel is welded by the welding equipment; Lower end spraying: After the lower end is welded, the packaging barrel is transported to the spraying equipment through the packaging barrel transportation equipment, and then the FPA coating is sprayed on the lower head of the packaging barrel, and the thickness of the FPA coating is greater than or equal to 0.5mm.

2. The EP method for a packaging barrel made of 316L material according to claim 1, characterized in that: The step of spraying at the lower end is specifically as follows: The lower head is firstly sandblasted and then cleaned by vacuuming. After cleaning, the lower head is preheated and sprayed for the first time after preheating. After the first spraying, the lower head is cooled and sprayed for the second time. After the second spraying, it is sintered at high temperature and finally cooled, so that the thickness of the FPA coating is greater than or equal to 0.5 mm, thereby forming a non-porous film on the surface of the lower head.

3. The EP method for a packaging barrel made of 316L material according to claim 1, characterized in that: The packaging barrel transport device comprises an equipment body (1), a transport mechanism (2), a clamping mechanism (3) and a rotating mechanism (4); the transport mechanism (2) is used to transport the packaging barrel along the length direction of the equipment body (1), so that the packaging barrel passes through one of the welding devices, the processing device, and the other welding device in sequence and reaches the spraying device; the clamping mechanism (3) is used to clamp the packaging barrel from the transport mechanism (2); and the rotating mechanism (4) is used to drive the packaging barrel clamped by the clamping mechanism (3) to rotate.

4. An EP method for a 316L material packaging barrel according to claim 3, characterized in that: The rotating mechanism (4) comprises a moving frame (41), a moving assembly (42), a rotating ring (43) and a rotating assembly (44); the moving frame (41) is slidably connected to the equipment body (1), and the sliding direction is the same as the transport direction of the transport mechanism (2); the moving assembly (42) is used to drive the moving frame (41) to slide; the rotating ring (43) is rotatably connected to the moving frame (41) and is sleeved on the packaging barrel; and the rotating assembly (44) is used to drive the rotating ring (43) to drive the packaging barrel to rotate together.

5. The EP method for a packaging barrel made of 316L material according to claim 4, characterized in that: The clamping mechanism (3) comprises a clamping assembly (31) and a lifting assembly (32). The clamping assembly (31) comprises a clamping frame (311) and a driving member (312). The number of the clamping frames (311) is set to be a plurality and they are respectively located on two opposite sides of the packaging barrel along its own axis direction. The top end of each clamping frame (311) is rotatably connected to the device body (1). The driving member (312) is used to drive each clamping frame (311) to rotate. The lifting assembly (32) is used to drive the corresponding packaging barrel to be lifted so as to be separated from the transport mechanism (2).

6. The EP method for a packaging barrel made of 316L material according to claim 5, characterized in that: The lifting assembly (32) includes a lifting frame (321) and a linkage member (322). The lifting frame (321) is slidably connected to the equipment body (1), and the sliding direction is the height direction of the equipment body (1). The linkage member (322) is used to drive the lifting frame (321) to slide.

7. The EP method for a 316L material packaging barrel according to claim 6, characterized in that: The rotating mechanism (4) further includes a redirecting assembly (46). The redirecting assembly (46) includes a redirecting frame (461) and a redirecting member (462). The redirecting frame (461) is slidably connected to the equipment body (1), and the sliding direction is the same as that of the lifting frame (321). The redirecting frame (461) drives the lifting frame (321) to slide through the redirecting member (462). The moving frame (41) drives the redirecting frame (461) to slide through the linkage member (322).

8. The EP method for a 316L material packaging barrel according to claim 7, characterized in that: The linkage member (322) includes a linkage frame (3221). One end of the linkage frame (3221) is rotatably connected to the redirecting frame (461), and the other end is rotatably connected to the moving frame (41).

9. An EP method for a 316L material packaging barrel according to claim 4, characterized in that: The rotating mechanism (4) further includes a fixing assembly (45). The fixing assembly (45) includes a fixing frame (451), a driving ring (452), a driving member (453), and a fixing member (454). The number of the fixing frames (451) is set to be several. Each fixing frame (451) is slidably connected to the rotating ring (43). When the rotating ring (43) is sleeved on the packaging barrel, the packaging barrel is located on the sliding path of each fixing frame (451). The driving ring (452) is rotatably connected to the rotating ring (43). The driving ring (452) drives each fixing frame (451) to slide through the driving member (453). The fixing member (454) is used to drive the driving ring (452) to rotate.

10. The EP method for a packaging barrel made of 316L material according to claim 9, characterized in that: The driving member (453) includes several driving frames (4531). The driving frames (4531) correspond to the clamping frames (311). One end of each driving frame (4531) is rotatably connected to the driving ring (452), and the other end is rotatably connected to the corresponding clamping frame (311).

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