A servo power seamer and can seamer using the same

Abstract

The application discloses a kind of servo power seal device and the sealing machine of using the device, device includes seal seat connecting component, seal installation component, slip ring, lifting panel, seal installation component includes seal bearing assembly group, seal mounting seat, support bearing, seal cam, seal servo motor group, seal servo motor driver group and seal swing rod assembly group, seal bearing assembly lower portion is equipped with magnetic seal, seal servo motor is finally adjusted the rotation speed of gland plate according to seal state, sealing machine also includes lifting device, and lifting device is controlled the seal state of the can body to be sealed by lifting mechanism and lifting cam, the scheme solves the problems that maintenance is difficult, cannot reduce speed and protect can body, is easy to leak and produce product pollution in prior art using planetary gear set, reaches the beneficial effect that it is convenient to control and reduce the seal after seal and protect can body, avoid oil leakage pollution, it is convenient to maintain.

Description

Technical Field

[0001] This invention relates to the field of container packaging production equipment technology, specifically to a servo-powered roll sealing device and a can sealing machine using the device. Background Technology

[0002] After the can is filled with material, it needs to be sealed to ensure that the can does not leak. Currently available continuous can sealing devices mostly use planetary gear sets for sealing, which are difficult to maintain. The motor drives the planetary gear set to rotate, which in turn drives multiple sealing heads to rotate simultaneously.

[0003] For example, patent document CN2848817Y discloses a vacuum sealing machine for irregularly shaped cans, including a main sealing head, a linear can feeding track, a turntable, a vacuum chamber, and a vacuum suction mechanism. The turntable is located at the end of the linear can feeding track, and a pre-sealing head and a capping mechanism are also provided near the middle of the linear can feeding track. The pre-sealing head includes a can supporting mechanism, a pressure head mold, a pre-sealing edge rolling roller, and a contouring drive device with a feeding mechanism. The pre-sealing edge rolling roller is driven by the contouring drive device with a feeding mechanism. The contouring drive device with a feeding mechanism includes a central gear, a large rotating wheel, a can-shaped horizontal circulating track, several planetary gears, several feeding cams, several contouring rocker arms, and several sealing rocker arms.

[0004] Planetary gear sets typically use a thin oil bath for lubrication. Since the sealing heads are positioned above the product, prolonged thin oil lubrication can lead to leakage and contamination. Because the planetary gear set drives multiple sealing heads for the sealing action, it cannot decelerate after sealing. The can remains at a high rotational speed after sealing, which can cause scratches on the bottom and body of the can, resulting in a large number of defective products during subsequent sealing quality monitoring. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a servo-powered roll sealing device and a can sealing machine using the device, thereby solving the problems of high maintenance difficulty, inability to reduce speed to protect the can, and easy leakage leading to product contamination in the aforementioned existing technologies that use planetary gear sets.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A servo-powered roll sealing device includes a roll sealing seat connecting component, a roll sealing mounting assembly, a slip ring, and a lifting panel. The roll sealing mounting assembly includes a roll sealing bearing assembly group, a roll sealing mounting seat, a support bearing, a roll sealing cam, a roll sealing servo motor group corresponding to each roll sealing bearing assembly, a roll sealing servo motor driver group corresponding to each roll sealing bearing assembly, and a roll sealing rocker arm assembly group corresponding to each roll sealing bearing assembly. The roll sealing cam is fixedly mounted from the top on the fixed ring of the outer ring of the support bearing. The roll sealing cam is annular and has an annular groove on its upper part. The roll sealing cam is mounted on the bottom of the lifting panel by a cam fixing rod fixed outside the annular groove. The roll sealing mounting seat is fixedly mounted from the bottom on the moving ring of the inner ring of the support bearing. The roll sealing mounting seat has a vertical center hole, an inner ring of roll sealing bearing holes, and an outer ring of roll sealing rocker arm assembly holes. A horizontal oil injection hole is opened on the side of the roll sealing mounting seat and communicates with the roll sealing bearing holes. The roll sealing rocker arm assembly includes a cam follower mounted at the top and a wheel assembly at the bottom. The roll sealing rocker arm assembly is fixedly mounted on the roll sealing mounting seat. The sealing rocker arm assembly is located inside the hole, and the cam follower moves within the annular groove of the sealing cam. The wheel assembly is located below the sealing mounting base. The sealing servo motor is fixedly mounted above the sealing bearing hole on the sealing mounting base. The sealing bearing assembly passes through the sealing bearing hole and is mounted at the bottom of the sealing servo motor. A rotating shaft is rigidly connected inside the sealing bearing assembly. An annular magnetic seal is installed at the bottom of the sealing bearing assembly. The top of the rotating shaft is driven by the motor shaft of the sealing servo motor. A pressure plate is installed on the outside of the bottom of the rotating shaft. A cover mechanism is installed inside the bottom of the rotating shaft. The sealing servo motor driver is mounted above the sealing servo motor. The top of the sealing base connecting component is fixed to the center of the bottom of the sealing mounting base. The slip ring is electrically connected to the sealing servo driver. The sealing servo driver is electrically connected to the corresponding sealing servo motor. The sealing servo motor ultimately adjusts the rotation speed of the pressure plate according to the circumferential position of the sealing bearing assembly and the sealing rocker arm assembly in the device. The speed is increased during sealing and decreased after sealing.

[0008] Preferably, the support bearing is a crossed cylindrical roller bearing.

[0009] Preferably, each set of the roll-sealing rocker arm assembly includes a first wheel rocker arm and a second wheel rocker arm arranged adjacent to each other.

[0010] Preferably, the roll-sealed rocker arm assembly itself includes a rocker arm mounting assembly and a roll-sealed rocker arm shaft assembly. The rocker arm mounting assembly and the wheel assembly are connected through the roll-sealed rocker arm shaft assembly. The rocker arm mounting assembly includes a cam follower and a rocker arm clamping block. One end of the rocker arm clamping block is fixed with the cam follower, and the other end is fixed to the top of the roll-sealed rocker arm shaft assembly.

[0011] Preferably, the roll sealing lever assembly is installed into the roll sealing lever assembly hole of the roll sealing mounting base from the bottom of the roll sealing mounting base via the roll sealing lever shaft assembly.

[0012] Preferably, the roll bearing assembly includes two roll bearings, upper and lower, which are rolling bearings.

[0013] Preferably, the magnetic seal is installed below the lower sealing bearing via a bearing spacer.

[0014] Preferably, the lower sealing bearing, bearing spacer, and magnetic seal are further equipped with an end cover with a rotating shaft hole in the middle of the bottom cover. The end cover is installed below the corresponding sealing bearing hole of the sealing mounting base by bolts, and the cover part of the end cover provides support for the magnetic seal.

[0015] Preferably, the lifting panel has a vertical center hole, which is coaxial with the center hole of the roll-sealing mounting base. A conduit is installed on the bottom surface of the slip ring above the lifting panel. The conduit passes through the center hole of the lifting panel and is fixedly installed on the center hole of the roll-sealing mounting base. A driver mounting plate with a center hole and a group of conduit holes is also installed on the roll-sealing mounting base via a fixed shaft. The roll-sealing servo motor driver group is fixedly installed on the driver mounting plate. The conduit also has conduit holes in the tube wall between the driver mounting plate and the lifting panel. The communication line of the slip ring passes through the conduit and is connected to the corresponding roll-sealing servo motor driver through the conduit hole in the tube wall. The motor line of the roll-sealing servo motor driver is connected to the roll-sealing servo motor through the corresponding conduit hole on the driver mounting plate.

[0016] Based on the same inventive concept, this solution also provides a can sealing machine, including a can lifting device. The can lifting device includes a central can lifting drive shaft, a can lifting mechanism, and a lower can lifting cam. The can lifting mechanism raises the can to be sealed to the sealing position when sealing is required, and lowers the can to be sealed to the non-sealing position after sealing. It also includes the aforementioned servo-powered roll sealing device, which is installed above the can lifting device and is fixedly connected to the can lifting drive shaft through a roll sealing seat connecting component, and completes the can sealing process together with the can lifting device.

[0017] Compared to existing technologies, this solution offers the following advantages: It employs a servo motor direct-drive structure, simplifying the entire sealing power transmission system and reducing maintenance difficulty. Each sealing station uses a separate, individually adjustable sealing power source. The sealing speed is continuously variable throughout the entire process, from the can lid entering the sealing station to its exit. Reduced rotational speeds at the entry and exit sealing stations ensure stable can entry and exit, preventing cans from exiting at high speeds and minimizing the risk of scratches on the can bottom and body.

[0018] The servo roll sealing power mechanism of this application uses a support bearing to connect the roll sealing mounting base and the roll sealing cam. The support bearing can connect the roll sealing mounting base and the roll sealing cam at the same time, and provides high-precision rotation and support, thereby ensuring that the entire servo roll sealing power mechanism can rotate stably.

[0019] The entire roll-sealing component is lubricated with grease, and a magnetic sealing structure is used at the roll-sealing bearing assembly to effectively ensure the grease is sealed, eliminating the risk of oil leakage and product contamination. Attached Figure Description

[0020] Figure 1 A perspective view of an embodiment of a servo-powered roll sealing device;

[0021] Figure 2 A vertical cross-sectional view of the center of the sealing bearing assembly in an embodiment of a servo-powered sealing device;

[0022] Figure 3 A perspective view of another embodiment of a servo-powered roll sealing device;

[0023] Figure 4 A perspective view of an embodiment of the roll-sealed swing arm assembly;

[0024] Figure 5 A perspective view of an embodiment of a can sealing machine with half of the protective cover hidden;

[0025] Among them, 0-can body to be sealed, 1-sealing seat connecting component, 2-sealing bearing assembly, 21-sealing bearing, 3-sealing mounting seat, 31-oil injection hole, 4-support bearing, 5-sealing cam, 6-sealing servo motor, 7-sealing servo motor driver, 8-slip ring, 9-rotating shaft, 10-pressure cover plate, 11-cover support mechanism, 12-sealing swing arm assembly, 12a-first wheel swing arm, 12b-second wheel swing arm, 121-wheel assembly, 122-sealing swing arm shaft assembly, 123-swing arm mounting assembly, 1231-cam follower, 1232-swing arm clamp, 13-lifting panel, 14-can lifting cam, 15-can lifting mechanism, 16-magnetic seal, 17-bearing spacer, 18-cam fixing rod, 19-driver mounting plate, 191-fixed shaft, 20-conduit. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0027] This embodiment provides a technical solution: a servo-powered roll sealing device, including a roll sealing seat connecting component 1, a roll sealing mounting assembly, a slip ring 8, and a lifting panel 13. The roll sealing mounting assembly includes roll sealing bearing assemblies 2 sets, a roll sealing mounting seat 3, a support bearing 4, a roll sealing cam 5, a roll sealing servo motor 6 sets corresponding to each roll sealing bearing 2, a roll sealing servo motor driver 7 sets corresponding to each roll sealing bearing assembly 2, and a roll sealing rocker arm assembly 12 sets corresponding to each roll sealing bearing assembly 2. In this embodiment, there are four sets of roll sealing bearing assemblies 2, four sets of roll sealing servo motors 6, seven sets of roll sealing servo motor drivers 7, and four sets of roll sealing rocker arm assemblies 12. Of course, other numbers such as three or five sets can also be used. In this embodiment, the servo-powered roll sealing device uses the support bearing 4 to connect the roll sealing mounting seat 3 and the roll sealing cam 5. The roll sealing mounting seat 5 is fixed from the bottom to the moving ring of the inner ring of the support bearing 4, and the roll sealing cam 5 is also fixed from the top to the fixed ring of the outer ring of the support bearing 4. The support bearing 4 uses a crossed cylindrical roller bearing. The support bearing 4 can provide high-precision rotation and support for both the connecting roll-sealing mounting base 3 and the roll-sealing cam 5, and provide high-precision support, thereby ensuring that the entire servo roll-sealing power unit can rotate stably.

[0028] The sealing cam 5 is annular and has an annular groove on its upper part. The sealing cam 5 is installed at the bottom of the lifting panel 13 by fixing the cam fixing rod 18 on the outside of the annular groove. The sealing mounting base 3 has a vertical center hole, an inner ring of sealing bearing holes and an outer ring of sealing swing rod assembly holes. The side of the sealing mounting base 3 has a horizontal oil injection hole 31 that communicates with the sealing bearing holes. The oil injection hole 31 is used to periodically fill the sealing bearing 21 installed in the sealing bearing holes with grease to lubricate the sealing bearing 21.

[0029] In this embodiment, each set of sealing rocker arm assemblies 12 includes two sealing rocker arm assemblies 12, namely, a first-stage rocker arm 12a and a second-stage rocker arm 12b arranged adjacent to each other. Each sealing rocker arm assembly 12 includes a cam follower 1231 mounted on the upper part and a wheel assembly 121 mounted on the lower part. The sealing rocker arm assembly 12 is fixedly installed in the sealing rocker arm assembly hole of the sealing mounting base 3, and the cam follower 1231 moves in the annular groove of the sealing cam 5. The wheel assembly 121 moves in the annular groove of the sealing cam 5. Below the mounting base 3, the roll-sealing rocker arm assembly 12 of this embodiment further includes a rocker arm mounting assembly 123 and a roll-sealing rocker arm shaft assembly 122. The rocker arm mounting assembly 123 and the wheel assembly 121 are connected through the roll-sealing rocker arm shaft assembly 122. The rocker arm mounting assembly 123 includes a cam follower 1231 and a rocker arm clamping block 1232. One end of the rocker arm clamping block 1232 is fixed to the cam follower 1231, and the other end is fixed to the top of the roll-sealing rocker arm shaft assembly 122. The roll-sealing rocker arm assembly 12 is installed from the bottom of the roll-sealing mounting base 3 into the roll-sealing rocker arm assembly hole of the roll-sealing mounting base 3 through the roll-sealing rocker arm shaft assembly 122.

[0030] The top of the sealing seat connecting component 1 is fixed to the center of the bottom of the sealing mounting base 3. The sealing seat connecting component 1 provides support and counterclockwise main rotation power for the entire sealing mounting base 3. During the counterclockwise rotation of the sealing mounting base 3, the cam follower of the first wheel swing arm 12a and the second wheel swing arm 12b of the sealing swing arm assembly 12 will run along the sealing curve formed by the annular groove of the sealing cam 5, so that the first wheel swing arm 12a and the second wheel swing arm 12b of the same set of sealing swing arm assemblies 12 can perform sealing action on the lid of the can body 0 to be sealed.

[0031] The installation structure of each set of sealing servo motors 6 and sealing bearings 2 is as follows: The sealing servo motor 6 is fixedly installed above the sealing bearing hole on the sealing mounting base 3 through the motor fixing seat with a central protrusion. The sealing bearing assembly 2 is installed at the bottom of the sealing servo motor 6 through the sealing bearing hole. The sealing bearing assembly 2 includes two sealing bearings 21, upper and lower. The sealing bearings 21 are rolling bearings. The upper and lower sealing bearings 21 are separated by an inner spacer and an outer spacer. The inner spacer is in close contact with the rotating shaft 9. The outer spacer also has several transverse holes. The rotating shaft 9 is rigidly connected inside the sealing bearing assembly 2. The top of the rotating shaft 9 is driven by the motor shaft of the sealing servo motor 6. A pressure plate 10 is installed on the outside of the bottom of the rotating shaft 9. A cover support mechanism 11 is installed inside the bottom of the rotating shaft 9. The sealing servo motor 6 drives the pressure plate 10 to rotate through the rotating shaft 9. At the sealing section curve of the sealing cam 5, the first wheel swing rod 12a and the second wheel swing rod 12b can perform sealing action on the can lid.

[0032] Since the entire sealing assembly is lubricated with grease, a magnetic sealing structure is used at the sealing bearing assembly 2. An annular magnetic seal 16 is installed at the lower part of the sealing bearing assembly 2. In this embodiment, the magnetic seal 16 is the OM64 model from Fujian Huali, installed below the lower sealing bearing 21 via a bearing spacer. An end cap with a rotating shaft hole in the center is also installed on the outer side of the lower sealing bearing 21, the bearing spacer 17, and the magnetic seal 16. The end cap is bolted to the corresponding sealing bearing hole on the sealing mounting base 3, and the end cap provides support for the magnetic seal 16. Using a magnetic seal results in a small footprint, withstands high temperatures and pressure differentials, is reliable in operation, has low wear, a long service life, and eliminates wear on the axial surface of the rotating shaft 9.

[0033] The sealing servo motor 6 is controlled by the sealing servo motor driver 7, which is mounted above the sealing servo motor 6. The slip ring 8 is electrically connected to the sealing servo motor driver 7, and the sealing servo motor driver 7 is electrically connected to the corresponding sealing servo motor 6. The slip ring 8 is used to provide communication to the sealing servo motor driver 7. In this embodiment, the specific structure is as follows: A vertical center hole is opened on the lifting panel 13, which is coaxial with the center hole of the sealing mounting base 3. A conduit 20 is installed on the bottom surface of the slip ring 8 above the lifting panel 13, and the conduit 20 passes through the lifting panel 13. The center hole of the slip ring 8 is fixedly installed on the center hole of the roll-sealing mounting base 3. A driver mounting plate 19 with a center hole and a group of through holes is also mounted on the roll-sealing mounting base 3 via a fixed shaft 191. The roll-sealing servo motor driver 7 group is fixedly mounted on the driver mounting plate 19. The through-tube 20 has through holes in its wall between the driver mounting plate 19 and the lifting panel 13. The communication line of the slip ring 8 passes through the through-tube 20 and connects to the corresponding roll-sealing servo motor driver 7 through the through holes in the tube wall. The motor line of the roll-sealing servo motor driver 7 connects to the roll-sealing servo motor 6 through the corresponding through holes on the driver mounting plate 19. This through-tube structure can accommodate the distribution of communication lines for multiple roll-sealing servo motor drivers 7 and eliminate mutual interference. Besides the structure described in this embodiment, other structures can also be used to complete the communication connection between the slip ring 8 and the roll-sealing servo motor driver 7.

[0034] Based on the same inventive concept, this solution also provides a can sealing machine. The can sealing machine of this embodiment includes a can lifting device and the aforementioned servo-powered sealing device. The can lifting device includes a central can lifting drive shaft, four can lifting mechanisms 15, and a lower can lifting cam 14. The can lifting cam 14 is mounted on a platform. A can lifting fixing seat that rotates with the can lifting drive shaft is mounted on the shaft. The can lifting mechanisms 15 are evenly arranged around the can lifting fixing seat. Each can lifting mechanism 15 includes a top can tray component, a middle can lifting bearing seat, and a vertically mounted cam bearing at the bottom. The lifting bearing seat is used to support the can body 0 to be sealed. It is fixed on the lifting fixed seat. The cam bearing is used to roll on the lower lifting cam. The top surface of the lifting cam 14 is provided with lifting curves at two heights: sealing position and non-sealing position. The lifting mechanism 15 raises the can body 0 to the sealing position when sealing is required through the lifting cam 14, and lowers the can body 0 to the non-sealing position after sealing. The servo-powered sealing device is installed above the lifting device and is fixedly connected to the lifting drive shaft through the sealing seat connecting component. Together with the lifting device, it completes the sealing process.

[0035] At different sealing curve positions along the lifting cam 14, the sealing servo motor 6 provides different rotational speeds. At the lowest point of the lifting cam 14 curve, the sealing servo motor 6 drives the pressure plate 10 to rotate at a lower speed via the rotating shaft 9; at the rising edge of the lifting cam 14 curve, the sealing servo motor 6 drives the pressure plate 10 to rotate at an accelerated speed via the rotating shaft 9; at the highest point of the lifting cam 14 curve, the sealing servo motor 6 drives the pressure plate 10 to rotate at the speed required for sealing the can lid via the rotating shaft 9; and at the falling edge of the lifting cam 14 curve, the sealing servo motor 6 drives the pressure plate 10 to rotate at a reduced speed via the rotating shaft 9.

[0036] The different rotational speeds of the sealing servo motor 6 throughout the cycle of the lifting cam 14 curve are as follows: (1) At the lowest point of the lifting cam 14 curve, the sealing servo motor 6 rotates at its lowest speed, reducing the passive rotation speed of the lifting mechanism 15 and allowing for more stable delivery of the tin can to the lifting mechanism. (2) At the rising edge of the lifting cam 14 curve, the sealing servo motor 6 accelerates its rotation, accelerating the rotation of the tin can lid during the ascent. (3) At the highest point of the lifting cam 14 curve, the sealing servo motor 6 rotates at the speed required for lid sealing, providing sufficient sealing power. (4) At the falling edge of the lifting cam 14 curve, the sealing servo motor 6 decelerates its rotation, reducing the rotational speed of the tin can when it exits the can, preventing scratches to the paint surface, and simultaneously reducing the rotational speed of the can tray component of the lifting mechanism 15 around the lifting drive shaft, facilitating stable can feeding.

[0037] The above-mentioned tank lifting device can also use other similar structures, as long as the servo-powered sealing cam 5 and the tank lifting cam 14 of the tank lifting device correspond to each other in the circumferential direction of the non-sealing section and the sealing section.

[0038] The above description is only a preferred embodiment of the present solution, but the scope of protection claimed by the present solution is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this invention, based on the technical solution and inventive concept of this application, should be covered within the scope of protection of this application.

Claims

1. A servo-powered roll sealing device, characterized in that: The assembly includes a roll-sealing seat connecting component (1), a roll-sealing mounting assembly, a slip ring (8), and a lifting panel (13). The roll-sealing mounting assembly includes a roll-sealing bearing assembly (2), a roll-sealing mounting seat (3), a support bearing (4), a roll-sealing cam (5), a roll-sealing servo motor (6) corresponding to each roll-sealing bearing assembly (2), a roll-sealing servo motor driver (7) corresponding to each roll-sealing bearing assembly (2), and a roll-sealing rocker arm assembly (12) corresponding to each roll-sealing bearing assembly (2). The roll-sealing cam (5) is fixedly mounted from the top on the fixed ring of the outer ring of the support bearing (4). The roll-sealing cam (5) is annular and has an annular groove on the top. The wheel (5) is mounted on the bottom of the lifting panel (13) by fixing the cam fixing rod (18) on the outside of the annular groove. The roll seal mounting seat (3) is fixedly mounted on the moving ring of the inner ring of the support bearing (4) from the bottom. The roll seal mounting seat (3) has a vertical center hole, an inner ring of roll seal bearing holes and an outer ring of roll seal rocker arm assembly holes. The roll seal mounting seat (3) has a horizontal oil injection hole (31) on its side that communicates with the roll seal bearing holes. The roll seal rocker arm assembly (12) includes a cam follower (1231) mounted on the upper part and a wheel assembly (121) mounted on the lower part. The roll seal rocker arm assembly (12) is fixedly mounted on the roll seal mounting seat (3). Inside the hole, and make the cam follower (1231) move in the annular groove of the sealing cam (5), the wheel assembly (121) is below the sealing mounting base (3), the sealing servo motor (6) is fixedly installed above the sealing bearing hole on the sealing mounting base (3), the sealing bearing assembly (2) passes through the sealing bearing hole and is installed at the bottom of the sealing servo motor (6), the sealing bearing assembly (2) is rigidly connected to the rotating shaft (9) inside, the sealing bearing assembly (2) is equipped with an annular magnetic seal (16) at the bottom, the top of the rotating shaft (9) is driven by the motor shaft of the sealing servo motor (6), and the bottom of the rotating shaft (9) is equipped with a pressure plate (). 10), the bottom of the rotating shaft (9) is equipped with a cover support mechanism (11), the roll sealing servo motor driver (7) is installed above the roll sealing servo motor (6), the top of the roll sealing seat connecting component (1) is fixed to the bottom center of the roll sealing mounting seat (3), the slip ring (8) is electrically connected to the roll sealing servo driver (7), the roll sealing servo driver (7) is electrically connected to the corresponding roll sealing servo motor (6), the roll sealing servo motor (6) ultimately adjusts the rotation speed of the cover plate (10) according to the circumferential position of the roll sealing bearing assembly (2) and the roll sealing swing rod assembly (12) in the device, increases the speed during sealing, and decreases the speed after sealing.

2. The servo-powered roll sealing device according to claim 1, characterized in that: The support bearing (4) uses a crossed cylindrical roller bearing.

3. The servo-powered roll sealing device according to claim 1, characterized in that: Each of the said roll-sealing rocker arm assemblies (12) includes a first wheel rocker arm (12a) and a second wheel rocker arm (12b) arranged adjacent to each other.

4. The servo-powered winding and sealing device according to claim 1, characterized in that: The roll-sealing rocker arm assembly (12) itself includes a rocker arm mounting assembly (123) and a roll-sealing rocker arm shaft assembly (122). The rocker arm mounting assembly (123) and the wheel assembly (121) are connected through the roll-sealing rocker arm shaft assembly (122). The rocker arm mounting assembly (123) includes a cam follower (1231) and a rocker arm clamp (1232). One end of the rocker arm clamp (1232) is fixed with the cam follower (1231), and the other end is fixed to the top of the roll-sealing rocker arm shaft assembly (122).

5. The servo-powered roll sealing device according to claim 4, characterized in that: The roll-sealing swing arm assembly (12) is installed into the roll-sealing swing arm assembly hole of the roll-sealing mounting base (3) from the bottom of the roll-sealing mounting base (3) through the roll-sealing swing arm shaft assembly (122).

6. The servo-powered roll sealing device according to claim 1, characterized in that: The roll bearing assembly (2) includes two roll bearings (21), one upper and one lower, which use rolling bearings.

7. The servo-powered winding and sealing device according to claim 6, characterized in that: The magnetic seal (16) is installed below the lower sealing bearing (21) via a bearing spacer.

8. The servo-powered roll sealing device according to claim 7, characterized in that: The lower sealing bearing (21), bearing spacer (17), and magnetic seal (16) are also equipped with an end cover with a rotating shaft hole in the middle of the bottom cover. The end cover is installed below the corresponding sealing bearing hole of the sealing mounting base (3) by bolts. The cover of the end cover supports the magnetic seal (16).

9. The servo-powered roll sealing device according to claim 1, characterized in that: The lifting panel (13) has a vertical center hole, which is coaxial with the center hole of the roll sealing mounting base (3). A wire guide tube (20) is installed on the bottom surface of the slip ring (8) above the lifting panel (13). The wire guide tube (20) passes through the center hole of the lifting panel (13) and is fixedly installed on the center hole of the roll sealing mounting base (3). The roll sealing mounting base (3) is also equipped with a driver mounting plate (19) with a center hole and a wire guide hole group through a fixed shaft (191). The roll sealing servo motor driver (7) group is fixedly installed on the driver mounting plate (19). The wire guide tube (20) also has a wire guide hole on the tube wall between the driver mounting plate (19) and the lifting panel (13). The communication line of the slip ring (8) passes through the wire guide tube (20) and is connected to the corresponding roll sealing servo motor driver (7) through the wire guide hole in the tube wall. The motor line of the roll sealing servo motor driver (7) is connected to the roll sealing servo motor (6) through the corresponding wire guide hole on the driver mounting plate (19).

10. A can sealing machine, comprising a can lifting device, the can lifting device comprising a central can lifting drive shaft, a can lifting mechanism (15), and a lower can lifting cam (14), the can lifting mechanism (15) raising the can to be sealed (0) to the sealing position when sealing is required via the can lifting cam (14), and lowering the can to be sealed (0) to the non-sealing position after sealing is completed, characterized in that: It also includes the servo-powered sealing device as described in any one of claims 1 to 9, wherein the servo-powered sealing device is installed above the can lifting device and is fixedly connected to the can lifting drive shaft through the sealing seat connecting component, and together with the can lifting device, completes the can sealing process.

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