Double-station turnover device

Abstract

The invention discloses a double-station turnover device, and belongs to the technical field of diaphragm production. The device comprises two sets of opposite wallboard racks, a transverse shaft is rotationally arranged in the middles of the wallboard racks, a driving motor is arranged on the inner side of one set of wallboard racks and used for driving the transverse shaft to rotate, a fixing plate and a gearbox are fixedly arranged on the transverse shaft, and electric telescopic devices are fixedly arranged at the two ends of the fixing plate and the two ends of the gearbox correspondingly. The winding drum positioning mechanism is connected with the output end of the corresponding electric telescopic device in a matched mode, and a driving component used for conveying torsion power to the winding drum positioning mechanism is arranged in the gearbox. During use, the winding drums are fixed by the two winding drum positioning mechanisms on the front face and the back face respectively, after winding of the winding drum on the front face is completed, the driving motor drives the transverse shaft to rotate, the full winding drum is turned over to the rear side, meanwhile, the empty winding drum on the rear side is turned over to the front side, and automatic switching of the winding drums is achieved. The whole process does not need to manually carry the winding drum for position replacement, and the working efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of diaphragm production, and in particular to a dual-station flipping device. Background Technology

[0002] A separator is a porous thin-film material commonly used in devices such as batteries and capacitors. It allows ions to pass through but prevents direct electron conduction, thus isolating the positive and negative electrodes and preventing short circuits. Separators are manufactured through a melt stretching process, in which a polymer is mixed with additives and extruded into a film. After heat treatment, a rigid, elastic film is obtained, which is then stretched unidirectionally or bidirectionally to form a microporous structure. Finally, it is cooled to solidify and wound onto a roll.

[0003] The winding process in diaphragm production is achieved through a specialized device, which typically consists of a winding roller, a tension detection roller, a tracking roller, and a control system. During production, the diaphragm is stretched and slit before entering the winding area. The tension detection roller monitors the tension in real time and feeds it back to the control system, which maintains constant tension by adjusting the speed of the winding motor. The tracking roller presses the diaphragm firmly onto the core, eliminating interlayer air and preventing loosening, thus completing the winding operation.

[0004] The shortcomings of the existing technical solutions are as follows: during sequential winding, the machine needs to be stopped and manually replaced after each roll is wound, resulting in frequent interruptions to the production process and reduced overall production efficiency. The full roll after winding is heavy, and manual disassembly is extremely laborious, potentially causing damage to the diaphragm or injury to personnel. Summary of the Invention

[0005] This invention provides a dual-station flipping device, which can solve the problem in the prior art that the machine needs to be stopped for manual replacement after each roll is finished, which reduces the overall production efficiency.

[0006] A dual-station flipping device includes two sets of opposing wall panel frames. A horizontal shaft is rotatably mounted in the middle of each wall panel frame. A drive motor is mounted inside one set of the wall panel frames to drive the horizontal shaft to rotate. A fixing plate and a gearbox are fixedly mounted on the horizontal shaft. Electric telescopic devices are fixedly mounted at both ends of the fixing plate and the gearbox, and a drum positioning mechanism is connected to the output end of the corresponding electric telescopic device. The gearbox contains a drive component for supplying torsional power to the drum positioning mechanism. The electric telescopic device is used to push the drum positioning mechanism to squeeze and clamp the drum. Guide mechanisms are provided on both sides of the fixing plate and the gearbox to assist in guiding the diaphragm when switching drums. An auxiliary winding mechanism is provided between the two sets of wall panel frames to assist in the diaphragm to adhere to and cut the empty drum, and a lower drum mechanism is provided for transferring the full drum.

[0007] As a further aspect of the present invention: the lower drum mechanism includes a support seat fixedly disposed between two sets of wall panel frames, a first hydraulic lifting device fixedly disposed on the support seat, a guide frame movably disposed at the telescopic end of the first hydraulic lifting device, used to adjust the height of the guide frame to adapt to the full drum diameter, the connection position of the guide frame and the first hydraulic lifting device is located between the two ends of the guide frame, forming a lever structure, and a hydraulic adjusting rod movably connected between the end of the guide frame away from the horizontal axis and the support seat, used to adjust the inclination of the guide frame.

[0008] As a further aspect of the present invention: the guide frame is provided with upwardly curved blocking parts at both ends to prevent the full roll from detaching from the guide frame.

[0009] As a further aspect of the present invention: the auxiliary winding mechanism includes an oil supply tank disposed between two sets of wall panel frames, two sets of second hydraulic lifting devices are fixedly disposed on the oil supply tank, and an auxiliary roller is rotatably disposed between the telescopic ends of the two sets of second hydraulic lifting devices. The surface of the auxiliary roller is covered with a flexible material to facilitate contact with the surface of the roll.

[0010] As a further aspect of the present invention: an electric guide rail is fixedly provided between the telescopic ends of the two sets of second hydraulic lifting devices, and a cutting device is provided on the electric guide rail for timely cutting of the diaphragm.

[0011] As a further embodiment of the present invention: the gearbox includes a housing, and two sets of electric telescopic devices are located at the rear sides of both ends of the housing. The extension end of the electric telescopic device is rotatably provided with a drive shaft. The front side of the housing is slidably provided with an adapter sleeve at a position corresponding to the corresponding drive shaft. The adapter sleeve is rotatably engaged with the drive shaft, and the drive component is driven by the drive shaft.

[0012] As a further embodiment of the present invention: connecting plates are fixedly arranged inside both sides of the outer shell, a transmission wheel is rotatably arranged on each set of connecting plates, a limit block is fixedly arranged on the side of each set of transmission shafts, a sliding opening adapted to the transmission shaft and the limit block is opened at the center of each set of transmission wheels, the transmission shaft passes through the center of the transmission wheel, the driving component includes a control motor fixedly arranged inside the outer shell, a drive wheel is fixedly arranged at the output end of the control motor, and a conveyor belt is arranged between the drive wheel and the transmission wheel.

[0013] As a further embodiment of the present invention: the guiding mechanism includes vertical plates fixedly disposed on the upper and lower sides of the fixed plate and the gearbox, and guide rollers are rotatably disposed between the corresponding two sets of vertical plates.

[0014] As a further aspect of the present invention, the number of guide rollers on each set of vertical plates is two sets.

[0015] As a further aspect of the present invention: an adapter sleeve is provided between the fixing plate and the drum positioning mechanism.

[0016] The beneficial effects of this invention are: 1. In use, this invention features two sets of drum positioning mechanisms on the front and back sides to fix the drum. After the front drum is wound up, the drive motor rotates the horizontal shaft, causing the full drum to flip to the rear side, while the empty drum on the rear side flips to the front side, achieving automatic drum switching. The entire process eliminates the need for manual handling of the drums for position changes, greatly reducing manual labor intensity and improving work efficiency.

[0017] 2. In this invention, the support base is equipped with a first hydraulic lifting device and a guide frame. The guide frame and the first hydraulic lifting device form a lever structure and are also connected to a hydraulic adjusting rod. Based on the full drum diameter, the first hydraulic lifting device is adjusted to make the guide frame adapt to the height. Then, the tilt of the guide frame is adjusted via the hydraulic adjusting rod to ensure its front end supports the bottom of the full drum and is level. After the drum is released, the guide frame tilts, causing the full drum to slide to the rear end, facilitating hoisting and lowering. This structure can adapt to drums of different diameters, precisely control the drum position and movement trajectory, achieve rapid and stable lowering, and improve lowering safety. Attached Figure Description

[0018] Figure 1 This is a rear view structural diagram of a dual-station flipping device provided by the present invention; Figure 2 This is a front view structural diagram of a dual-station flipping device provided by the present invention; Figure 3 This invention provides a schematic diagram of the guiding mechanism structure of a dual-station flipping device; Figure 4 This invention provides a schematic diagram of the lower cylinder mechanism of a dual-station flipping device. Figure 5 This is a schematic diagram of the internal structure of the gearbox of a dual-station flipping device provided by the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Wall panel frame; 2. Horizontal shaft; 3. Fixing plate; 4. Gearbox; 401. Housing; 402. Drive shaft; 4021. Limiting block; 403. Connecting plate; 404. Drive wheel; 405. Conveyor belt; 406. Adapter sleeve; 407. Control motor; 408. Drive wheel; 5. Electric telescopic device; 6. Drum positioning mechanism; 7. Guide mechanism; 701. Vertical plate; 702. Guide roller; 8. Lower drum mechanism; 801. Bearing seat; 802. First hydraulic lifting device; 803. Material guide frame; 804. Hydraulic adjusting rod; 9. Auxiliary winding mechanism; 901. Oil supply tank; 902. Second hydraulic lifting device; 903. Electric guide rail; 904. Auxiliary roller; 905. Cutting device. Detailed Implementation

[0020] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0021] like Figures 1 to 5 As shown in the figure, an embodiment of the present invention provides a dual-station flipping device, comprising two sets of opposing wall panel frames 1, with a horizontal shaft 2 rotatably positioned between the two sets of wall panel frames 1. A drive motor is installed inside one set of wall panel frames 1, the main function of which is to drive the horizontal shaft 2 to rotate. A fixing plate 3 and a gearbox 4 are fixedly mounted on the horizontal shaft 2. Electric telescopic devices 5 are fixedly mounted at both ends of the fixing plate 3 and the gearbox 4, and the output end of each electric telescopic device 5 is connected to a drum positioning mechanism 6. The electric telescopic device 5 has the ability to drive the drum positioning mechanism 6 to move laterally. When the electric telescopic device 5 is working, it can push the drum positioning mechanism 6 to squeeze and clamp the drum, thereby fixing the drum. The gearbox 4 contains a drive component for supplying torsional power to the drum positioning mechanism 6, which provides power for the rotation of the drum. Guide mechanisms 7 are provided on both sides of the fixed plate 3 and the gearbox 4. The main function of the guide mechanisms 7 is to assist in guiding the diaphragm when switching drums, ensuring that the diaphragm can move along the predetermined path. An auxiliary winding mechanism 9 and a lowering mechanism 8 are also provided between the two sets of wall panel frames 1. The auxiliary winding mechanism 9 is used to assist the diaphragm in adhering to the empty drum and cutting the diaphragm, while the lowering mechanism 8 is used to transfer the full drum, removing the fully wound full drum from the device.

[0022] When using the device of the present invention, such as Figure 2 As shown, the drum is first fixed by two sets of drum positioning mechanisms 6 on the front. At this time, the drive component in the gearbox 4 drives the drum to rotate. As the drum rotates, the diaphragm is gradually wound around the drum. After the drum is wound up, the drive motor starts and drives the horizontal shaft 2 to rotate. During the rotation of the horizontal shaft 2, the fixing plate 3 and the gearbox 4 fixed on it will rotate together, so that the full drum is brought to the rear side, and the empty drum at the rear side is brought to the front side. At this time, the diaphragm needs to pass through the bottom of the empty drum. The auxiliary winding mechanism 9 pushes the diaphragm to one side, so that the movement path of the diaphragm coincides with the side of the empty drum. Then the auxiliary winding mechanism 9 cuts the diaphragm. The cut diaphragm is naturally wound around the side of the empty drum, thus completing the drum switching. The full drum that has been transferred to the rear side is then unloaded by the unloading mechanism 8.

[0023] In this embodiment, the lower drum mechanism 8 includes a support seat 801 fixedly disposed between two sets of wall panel frames 1. Two sets of first hydraulic lifting devices 802 are fixedly disposed on the support seat 801, and guide frames 803 are movably disposed at the telescopic ends of the two sets of first hydraulic lifting devices 802. The height of the guide frame 803 can be adapted by adjusting the lifting height of the first hydraulic lifting devices 802 to accommodate full rolls of different diameters. Both ends of the guide frame 803 are provided with upwardly curved blocking parts, the function of which is to prevent the full roll from detaching from the guide frame 803 during movement. The connection position between the guide frame 803 and the first hydraulic lifting devices 802 is located between the two ends of the guide frame 803, forming a lever structure. In addition, a hydraulic adjusting rod 804 is movably connected between the end of the guide frame 803 away from the horizontal axis 2 and the support seat 801. The main function of the hydraulic adjusting rod 804 is to adjust the inclination of the guide frame 803.

[0024] When different types of diaphragms are wound onto the roll, their diameters will vary. In this case, the lifting height of the first hydraulic lifting device 802 can be adjusted so that the guide frame 803 can adapt to the diameter of the full roll. Then, the hydraulic adjusting rod 804 extends, adjusting the tilt angle of the guide frame 803 so that its front end can support the bottom of the full roll and that the guide frame 803 is in a horizontal position. At this time, the electric telescopic device 5 drives the roll positioning mechanism 6 to release the roll, and then the hydraulic adjusting rod 804 retracts, causing the guide frame 803 to tilt outwards. The full roll will move along the guide frame 803 to the rear end, making it easier for the lifting tool to assemble the auxiliary arm onto both ends of the full roll for a quick unloading operation. The process of loading the drum is similar to that of unloading the drum. Place the empty drum on the guide frame 803, adjust the first hydraulic lifting device 802 and the hydraulic adjusting rod 804, or push it manually to align the empty drum with the drum positioning mechanism 6. Then start the electric telescopic device 5 to fix the empty drum. Finally, adjust the first hydraulic lifting device 802 and the hydraulic adjusting rod 804 to move them away from the drum's movement path to complete the assembly of the empty drum.

[0025] In one specific embodiment, the auxiliary winding mechanism 9 includes an oil supply tank 901 disposed between two sets of wall panel frames 1. Two sets of second hydraulic lifting devices 902 are fixedly mounted on the oil supply tank 901, and an auxiliary roller 904 is rotatably mounted between the telescopic ends of the two sets of second hydraulic lifting devices 902. The surface of the auxiliary roller 904 is covered with a flexible material to facilitate contact between the auxiliary roller 904 and the surface of the roll. The auxiliary roller 904 can be pressed against the side of the roll, so that the movement path of the diaphragm can pass through the area between the roll surface and the auxiliary roller 904, forming a curved path. An electric guide rail 903 is also fixedly mounted between the telescopic ends of the two sets of second hydraulic lifting devices 902, and a cutting device 905 is mounted on the electric guide rail 903. When the roll needs to be replaced, the electric guide rail 903 drives the cutting device 905 to move quickly laterally, quickly cutting the diaphragm located on one side of the auxiliary roller 904. The cut diaphragm will then wind along the surface of the empty roll, thereby completing the diaphragm replacement operation. In addition, an electrostatic generator can be installed on the drum positioning mechanism 6. The electrostatic generator can improve the adsorption force of the drum on the diaphragm, so that the diaphragm can be better wound on the drum.

[0026] In one specific embodiment, the gearbox 4 includes a housing 401, with two sets of electric telescopic devices 5 located at the rear ends of the housing 401. A drive shaft 402 is rotatably mounted on the extended end of each electric telescopic device 5. An adapter sleeve 406 is slidably mounted on the front side of the housing 401 at a position corresponding to the drive shaft 402. The adapter sleeve 406 rotatably engages with the drive shaft 402, and the drive shaft 402 is fixedly connected to a corresponding drum positioning mechanism 6. Connecting plates 403 are fixedly mounted inside both sides of the housing 401. A drive wheel 404 is rotatably mounted on each connecting plate 403. A limit block 4021 is fixedly mounted on the side of each drive shaft 402. A sliding opening adapted to the drive shaft 402 and the limit block 4021 is opened at the center of each drive wheel 404, and the drive shaft 402 passes through the center of the drive wheel 404. The driving component includes a control motor 407 fixedly installed inside the housing 401, a drive wheel 408 fixedly installed at the output end of the control motor 407, and a conveyor belt 405 is provided between the drive wheel 408 and the transmission wheel 404.

[0027] When using gearbox 4, control motor 407 starts, driving drive wheel 408 to rotate. Drive wheel 408 drives transmission wheel 404 to rotate via conveyor belt 405. Transmission wheel 404 then drives transmission shaft 402 to rotate. Transmission shaft 402 drives the corresponding drum positioning mechanism 6 to rotate, thus completing the drive of the drum. If it is necessary to clamp or release the drum, the corresponding electric telescopic device 5 can be activated. Electric telescopic device 5 drives transmission shaft 402 to move, and then transmission shaft 402 drives adapter sleeve 406 to move along outer shell 401, thereby driving drum positioning mechanism 6 to move, ultimately completing the clamping and release of the drum.

[0028] An adapter sleeve 406 is also provided between the fixed plate 3 and the drum positioning mechanism 6. This adapter sleeve 406 facilitates the movement of the drum positioning mechanism 6 by the electric telescopic device 5 on the fixed plate 3, and also facilitates the rotation of the drum positioning mechanism 6 itself.

[0029] In one specific embodiment, the guiding mechanism 7 includes upright plates 701 fixedly disposed on the upper and lower sides of the fixed plate 3 and the gearbox 4, and two sets of guide rollers 702 rotatably disposed between the two sets of upright plates 701. When the horizontal shaft 2 drives the two sets of drums to rotate, the diaphragm will wind downwards onto the guide rollers 702. The guide rollers 702 change the movement trajectory of the diaphragm, preventing the horizontal shaft 2 or other stationary accessories from obstructing the movement of the diaphragm, and ensuring that the diaphragm can be smoothly wound onto the drums.

[0030] Working principle: When using the device, there are two sets of drum positioning mechanisms 6 at the front and rear to fix the corresponding drums. The drive component in the gearbox 4 drives the front drum to rotate. As the drum rotates, the diaphragm gradually winds onto the drum.

[0031] After the roll is wound up, the drive motor drives the horizontal shaft 2 to rotate. The horizontal shaft 2 drives the fixed plate 3 and gearbox 4 fixed on it to rotate together, so that the full roll is brought to the rear side, and the empty roll at the rear side is brought to the front side. At this time, the diaphragm needs to pass through the bottom of the empty roll. The auxiliary roller 904 presses low on the side of the roll, so that the diaphragm's movement path passes through the surface of the roll and forms a curved path between the auxiliary roller 904 and the roll surface. The electric guide rail 903 drives the cutting device 905 to move quickly laterally, quickly cutting the diaphragm located on one side of the auxiliary roller 904. The cut diaphragm naturally wraps around the side of the empty roll, completing the roll switching.

[0032] During unloading, the lifting height of the first hydraulic lifting device 802 is adjusted according to the full drum diameter to ensure that the guide frame 803 is adapted to the full drum diameter. Then, the tilt angle of the guide frame 803 is adjusted by the hydraulic adjusting rod 804 so that its front end supports the bottom of the full drum and is in a horizontal state. The electric telescopic device 5 drives the drum positioning mechanism 6 to release the drum, and the hydraulic adjusting rod 804 retracts, causing the guide frame 803 to tilt outward. The full drum moves along the guide frame 803 to the rear end, facilitating the rapid unloading of the drum by the lifting tools. The unloading operation is similar to the unloading operation. The empty drum is placed on the guide frame 803, and the first hydraulic lifting device 802 and the hydraulic adjusting rod 804 are adjusted, or it is pushed manually to align the empty drum with the drum positioning mechanism 6. The electric telescopic device 5 is activated to fix the empty drum, and finally, the first hydraulic lifting device 802 and the hydraulic adjusting rod 804 are adjusted to move away from the drum's movement path to complete the empty drum assembly.

[0033] When gearbox 4 is working, control motor 407 starts and drives drive wheel 408 to rotate. Drive wheel 408 drives transmission wheel 404 to rotate via conveyor belt 405. Transmission wheel 404 then drives transmission shaft 402 to rotate. Transmission shaft 402 drives the corresponding drum positioning mechanism 6 to rotate, thus driving the drum. If it is necessary to clamp or release the drum, the corresponding electric telescopic device 5 is activated, which drives transmission shaft 402 to move. Transmission shaft 402 drives adapter sleeve 406 to move, which in turn drives drum positioning mechanism 6 to move, thus completing the clamping and releasing of the drum.

[0034] When the horizontal shaft 2 drives the two sets of drums to rotate, the diaphragm winds downwards onto the guide roller 702. The guide roller 702 changes the diaphragm's movement trajectory, preventing the horizontal shaft 2 or other stationary accessories from obstructing the diaphragm's movement and ensuring that the diaphragm is smoothly wound onto the drum. An electrostatic generator can be installed on the drum positioning mechanism 6 to improve the drum's attraction to the diaphragm, allowing the diaphragm to wind onto the drum better.

[0035] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A dual-station flipping device, comprising two sets of opposing wall panel frames (1), wherein a horizontal shaft (2) is rotatably mounted in the middle of each wall panel frame (1), and a drive motor is mounted on the inner side of one set of the wall panel frames (1) for driving the horizontal shaft (2) to rotate, characterized in that, A fixed plate (3) and a gearbox (4) are fixedly installed on the horizontal shaft (2). Electric telescopic devices (5) are fixedly installed at both ends of the fixed plate (3) and the gearbox (4), and a drum positioning mechanism (6) is connected to the output end of the corresponding electric telescopic device (5). A drive component for supplying torsional power to the drum positioning mechanism (6) is provided inside the gearbox (4). The electric telescopic device (5) is used to push the drum positioning mechanism (6) to squeeze and clamp the drum. Guide mechanisms (7) are provided on both sides of the fixed plate (3) and the gearbox (4) for auxiliary guidance of the diaphragm when switching drums. An auxiliary winding mechanism (9) for assisting the diaphragm to adhere to the empty roll and cut it is provided between the two sets of wall panel frames (1), and a lowering mechanism (8) for transferring the full roll.

2. The dual-station flipping device as described in claim 1, characterized in that, The lower drum mechanism (8) includes a support seat (801) fixedly installed between two sets of wall panel frames (1). A first hydraulic lifting device (802) is fixedly installed on the support seat (801). A guide frame (803) is movably installed at the telescopic end of the first hydraulic lifting device (802) for adjusting the height of the guide frame (803) to match the full drum diameter. The connection position between the guide frame (803) and the first hydraulic lifting device (802) is located between the two ends of the guide frame (803), forming a lever structure. A hydraulic adjusting rod (804) is movably connected between the end of the guide frame (803) away from the horizontal axis (2) and the support seat (801) for adjusting the inclination of the guide frame (803).

3. The dual-station flipping device as described in claim 2, characterized in that, The guide frame (803) has upwardly curved blocking parts at both ends to prevent the full roll from leaving the guide frame (803).

4. A dual-station flipping device as described in claim 1 or 3, characterized in that, The auxiliary winding mechanism (9) includes an oil supply tank (901) disposed between two sets of wall panel frames (1). Two sets of second hydraulic lifting devices (902) are fixedly disposed on the oil supply tank (901). An auxiliary roller (904) is rotatably disposed between the telescopic ends of the two sets of second hydraulic lifting devices (902). The surface of the auxiliary roller (904) is covered with a flexible material to facilitate contact with the surface of the roll.

5. A dual-station flipping device as described in claim 4, characterized in that, An electric guide rail (903) is fixedly installed between the telescopic ends of the two sets of second hydraulic lifting devices (902), and a cutting device (905) is installed on the electric guide rail (903) to cut the diaphragm in time.

6. A dual-station flipping device as described in claim 1 or 3, characterized in that, The gearbox (4) includes a housing (401), and two sets of electric telescopic devices (5) are located at the rear ends of the housing (401). The extension end of the electric telescopic device (5) is rotatably provided with a drive shaft (402). The front side of the housing (401) is slidably provided with a transition sleeve (406) corresponding to the corresponding drive shaft (402). The transition sleeve (406) is rotatably engaged with the drive shaft (402), and the driving component is driven by the drive shaft (402).

7. A dual-station flipping device as described in claim 6, characterized in that, Connecting plates (403) are fixedly installed inside both sides of the outer shell (401). A transmission wheel (404) is rotatably installed on each set of connecting plates (403). A limit block (4021) is fixedly installed on the side of each set of transmission shafts (402). A sliding opening adapted to the transmission shaft (402) and the limit block (4021) is opened at the center of each set of transmission wheels (404). The transmission shaft (402) passes through the center of the transmission wheel (404). The driving component includes a control motor (407) fixedly installed inside the outer shell (401). A drive wheel (408) is fixedly installed at the output end of the control motor (407). A conveyor belt (405) is provided between the drive wheel (408) and the transmission wheel (404).

8. The dual-station flipping device as described in claim 7, characterized in that, The guiding mechanism (7) includes upright plates (701) fixedly installed on the upper and lower sides of the fixed plate (3) and the gearbox (4), and guide rollers (702) are rotatably arranged between the two sets of upright plates (701).

9. A dual-station flipping device as described in claim 8, characterized in that, The number of guide rollers (702) on each set of vertical plates (701) is two sets.

10. A dual-station flipping device as described in claim 8, characterized in that, An adapter sleeve (406) is provided between the fixed plate (3) and the drum positioning mechanism (6).

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