CN112340670A

CN112340670A - Automatic can seamer

Info

Publication number: CN112340670A
Application number: CN202011246392.1A
Authority: CN
Inventors: 蔡瑞林
Original assignee: Xiamen Yifeng Technology Co ltd
Current assignee: Xiamen Yifeng Technology Co ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-02-09

Abstract

The invention discloses an automatic can seamer, which comprises a machine body, a sealing component, a driving linkage component and a container placing component, wherein the sealing component is provided with a metal cover positioning mechanism, a curling roller mechanism revolving around the metal cover positioning mechanism, a blank pressing roller mechanism and a roller driving revolution shaft with the position of a driving roller being changed; the container placing assembly to be sealed is provided with a fixed guide seat, a movable guide shaft and a driving device for driving the movable guide shaft to stretch and retract; and the edge rolling roller mechanism and the edge pressing roller mechanism on the sealing assembly revolve around the positioning mechanism, and the edge pressing roller mechanism of the edge rolling roller mechanism machine performs sealing action under the action of the roller driving revolution shaft. The sealing action of the invention is divided into primary prepressing and secondary pressing, thus ensuring the buckling effect of the cover and the bottle mouth to be more excellent; and the container position is kept irrotational in the process of sealing, so that when an object in the container is sealed, the object does not rotate along with the roller, and keeps static, and the object position is ensured to be fixed.

Description

Automatic can seamer

Technical Field

The invention relates to the technical field of metal cover container sealing equipment, in particular to an automatic can sealing machine.

Background

The common desktop type pop can sealing machine has the same and different working modes at present, and the common desktop type pop can sealing machine is characterized in that an aluminum cup cover is arranged at the cup mouth of a plastic cup, and then the aluminum cup cover and the plastic cup are deformed by extruding a spinning wheel to the aluminum cup cover, so that the sealing purpose is achieved. However, the bottle body of the existing sealing machine rotates in the sealing process, so that the technical problems of overflow, position running and the like of articles in the container are caused.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides an automatic can seamer.

In order to achieve the purpose, the invention adopts the following technical scheme:

an automatic can seamer comprises a machine body, a sealing assembly arranged at the upper part of the machine body, a container placing assembly arranged at the lower part of the machine body, and a lifting driving assembly arranged at the lower part of the machine body, wherein the sealing assembly is connected to a linkage driving assembly; the sealing assembly is provided with a positioning mechanism of the metal cover, the positioning mechanism is fixed on the machine body through a connecting piece, a hemming roller mechanism and a blank pressing roller mechanism are arranged in the circumferential direction of the positioning mechanism, and the linkage driving assembly carries out linkage control on the sealing assembly and the lifting driving assembly according to a set speed ratio; the machine body is provided with a power driving device, the power driving device drives a linkage driving component to push a lifting driving component, so that the can body of the container to be sealed is tightly attached to the metal cover and fixed between the positioning mechanism and the container placing component, the linkage driving component drives the sealing component to act so that the edge rolling roller mechanism revolves around the container to be sealed, and the metal cover is sealed.

Preferably, the container is placed the fixed guide holder that the subassembly was provided with, the activity guiding axle, be equipped with distance adjusting shaft, container locator, lifting connecting rod on the activity guiding axle, fixed guide holder be fixed in the fuselage lower part with the center pin that seals the subassembly keeps on same axis, the distance adjusting shaft is used for adjusting container and metal covering gland interval, guarantees to wait to seal the container after the location and does not take place rotatoryly when sealing, lifting connecting rod and lift drive subassembly swing joint, the activity guiding axle is equipped with on the fixed guide holder, and the activity guiding axle realizes under the lift drive subassembly that the axle center direction of fixed guide holder is flexible.

Preferably, the positioning mechanism comprises a fixed shaft, a pressure head is fixed at the lower end of the fixed shaft, and the upper end of the fixed shaft is fixed on the machine body through a connecting piece.

Preferably, the sealing assembly is provided with a revolution base, the revolution base is fixed on the machine body, a roller driving revolution shaft is arranged in the revolution base, a roller revolution shaft is arranged in the roller driving revolution shaft, the fixed shaft is arranged in the roller revolution shaft, the hemming roller mechanism and the blank pressing roller mechanism are respectively and rotatably connected to two ends of a roller connecting arm, and two ends of a reset spring are respectively connected with the hemming roller mechanism or the blank pressing roller mechanism and the roller connecting arm; the hemming roller mechanism comprises a hemming roller, a first roller swing arm, a first driving arm and a first bearing, the hemming roller is arranged on the circumference of the pressure head, the hemming roller is fixed at one end of the first roller swing arm, the other end of the first roller swing arm is connected with the axis of the first driving arm to form a fixed angle body, the axis of the first driving arm penetrates through one end of the roller connecting arm, and the first bearing is fixed at the other end, opposite to the axis, of the first driving arm; the edge pressing roller mechanism comprises an edge pressing roller, a second roller swing arm, a second driving arm and a second bearing, the edge pressing roller is arranged on the circumference of the pressure head and fixed at one end of the second roller swing arm, the other end of the second roller swing arm is connected with the axis of the second driving arm to form a fixed angle body, the axis of the second driving arm penetrates through the other end of the roller connecting arm, and the second bearing is fixed at the other end of the second driving arm relative to the axis; the outer edge of the roller wheel driving revolution shaft is provided with a first cam section (261) and a second cam section (262), and in the rotating process, the first bearing rolls over the first cam section, and the second bearing rolls over the second cam section.

Preferably, the linkage driving assembly comprises a fixing frame, a linkage shaft, a first gear, a second gear, a third gear, a fourth gear and a linkage reduction gear set, wherein the linkage shaft is provided with a fifth gear, the fifth gear and the linkage shaft are of an integral structure or a split structure, the third gear and the fourth gear are fixed on the linkage shaft, the fifth gear is connected with the linkage reduction gear set, the third gear is matched with the first gear, the fourth gear is matched with the second gear, the first gear is connected with the roller revolution shaft, and the second gear is connected with the roller driving revolution shaft.

Preferably, the number of rotation turns N of the linkage shaft is equal to the speed ratio of the linkage reduction gear set, and after the linkage shaft rotates for N turns, the number difference between the rotation turns of the first gear and the second gear is 1, wherein N is a positive integer and is not less than 12 and not more than 25.

Preferably, the number of the first gear rotation turns is 1 turn smaller than that of the second gear rotation turns, and N is 15.

Preferably, the lifting driving assembly comprises a power connecting rod, a rotating cam, a movable lever and a rolling piece; the one end of power connecting rod with the linkage reduction gear set output shaft links to each other, the other end of power connecting rod is fixed with rotatory cam, rotatory cam is equipped with cam high point and cam low point, linkage reduction gear set drive power connecting rod drives rotatory cam, the rolling member axle center is fixed in activity lever one end, the rolling member outer fringe profile contact in rotatory cam terminal surface edge follows rotatory cam rotates and winds the swing of lever fixed axle, the activity lever other end is connected the lifting connecting rod, promotes the activity guiding axle and stretches out and draws back.

Preferably, the power driving device is provided with a driving motor, a belt pulley set and a belt, an output shaft of the driving motor drives the belt pulley set to rotate through the belt, and the belt pulley set is connected with the linkage shaft.

Preferably, a single-circulation control switch is arranged on the machine body, a single-circulation eccentric wheel is arranged on the power connecting rod and rotates along with the power connecting rod, and when a high point on the single-circulation eccentric wheel touches or senses the single-circulation control switch, a circle is controlled to circulate once.

The sealing action of the invention is divided into two times, one time of prepressing and two times of pressing, thus ensuring the buckling effect of the cover and the bottle mouth to be more excellent; and the container position is kept to be irrotational in the process of sealing, so that the container does not rotate along with the roller when an object in the container is sealed, the container is kept forbidden, and the object position is guaranteed to run.

Drawings

FIG. 1 is a perspective view of an automatic can seamer according to the present invention;

FIG. 2 is a schematic view of a container placement assembly and a lift drive assembly;

FIG. 3 is a cross-sectional view of the closure assembly;

FIG. 4 is a perspective view of the closure assembly;

FIG. 5 is a perspective view of the linkage drive assembly;

fig. 6 is a perspective view of the roller driving revolution shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1, the embodiment provides an automatic can seamer, which comprises a machine body 1, a sealing assembly 2 arranged at the upper part of the machine body 1, a container placing assembly 3 arranged at the lower part of the machine body 1, a lifting driving assembly 4 arranged at the lower part of the machine body 1, and the sealing assembly 2 connected to a linkage driving assembly 5; a positioning mechanism of the metal cover 6 is arranged on the sealing component 2, the positioning mechanism is fixed on the machine body 1 through a connecting piece 28, a hemming roller mechanism and a blank pressing roller mechanism are arranged in the circumferential direction of the positioning mechanism, and the linkage driving component 5 carries out linkage control on the sealing component 2 and the lifting driving component 4 according to a set speed ratio; the machine body 1 is provided with a power driving device 7, the power driving device drives a linkage driving component 5 to push a lifting driving component 4, so that the can body of the container 8 to be sealed is tightly attached to the metal cover 6 and fixed between a positioning mechanism 21 and the container placing component 3, and the linkage driving component 5 drives the sealing component to act so that a curling roller mechanism and a blank pressing roller mechanism revolve around the container 8 to be sealed to perform the sealing action of the metal cover 6.

As shown in fig. 2, the container placing assembly 3 is provided with a fixed guide seat 31, a movable guide shaft 32, the movable guide shaft 32 is provided with a distance adjusting shaft 321, a container positioner 322 and a lifting connecting rod 323, the fixed guide seat 31 is fixed at the lower part of the machine body 1 and is kept on the same axial line with the central shaft of the sealing assembly 2, the distance adjusting shaft 321 is used for adjusting the distance between the container and the metal cover gland 22, so as to ensure that the container to be sealed after positioning is not rotated during sealing, the lifting connecting rod 323 is movably connected with a lifting driving assembly 4, the fixed guide seat 31 is provided with the movable guide shaft 32, and the movable guide shaft 32 is stretched along the axial direction of the fixed guide seat 31 under the action of the lifting driving assembly 4.

As shown in fig. 3, the positioning mechanism includes a fixed shaft 211, a pressing head 212 is fixed to the lower end of the fixed shaft 211, and the upper end of the fixed shaft 211 is fixed to the machine body 1 through a connecting member 28.

As shown in fig. 3, 4 and 6, the sealing assembly 2 is provided with a revolution base 24, the revolution base 24 is fixed on the machine body 1, a roller driving revolution shaft 26 is arranged in the revolution base 24, a roller revolution shaft 25 is arranged in the roller driving revolution shaft 26, a fixed shaft 211 is arranged in the roller revolution shaft 25, the hemming roller mechanism and the blank pressing roller mechanism are respectively and rotatably connected to two ends of the roller connecting arm 23, and two ends of a reset spring 27 are respectively connected to the hemming roller mechanism or the blank pressing roller mechanism and the roller connecting arm 23; the hemming roller mechanism comprises a hemming roller 221, a first roller swing arm 222, a first driving arm 223 and a first bearing 224, the hemming roller 221 is arranged on the circumference of the pressure head 212, the hemming roller 221 is fixed at one end of the first roller swing arm 222, the other end of the first roller swing arm 222 is connected with the axis of the first driving arm 223 to form a fixed angle body, the axis of the first driving arm 223 penetrates through one end of the roller connecting arm 23, and the first bearing 224 is fixed at the other end of the first driving arm 223 relative to the axis; the edge pressing roller mechanism 23 comprises an edge pressing roller 231, a second roller swing arm 232, a second driving arm 233 and a second bearing 234, the edge pressing roller 231 is arranged on the circumference of the pressure head 212, the edge pressing roller 231 is fixed at one end of the second roller swing arm 232, the other end of the second roller swing arm 232 is connected with the axis of the second driving arm 233 to form a fixed angle body, the axis of the second driving arm 233 penetrates through the other end of the roller connecting arm 23, and the second bearing 234 is fixed at the other end of the second driving arm 233 relative to the axis; the outer edge of the roller driving revolution shaft 26 is provided with a first cam section 261 and a second cam section 262, and during the rotation, the first bearing 224 rolls over the first cam section 261, and the second bearing 234 rolls over the second cam section 262.

As shown in fig. 5, the linkage driving assembly 5 includes a fixing frame 51, a linkage shaft 52, a first gear 53, a second gear 54, a third gear 55, a fourth gear 56, and a linkage reduction gear set 57, wherein the linkage shaft 52 is provided with a fifth gear 58, the fifth gear 58 and the linkage shaft 52 are in an integral structure or a split structure, the third gear 55 and the fourth gear 56 are fixed on the linkage shaft 52, the fifth gear 58 is connected with the linkage reduction gear set 57, the third gear 55 is matched with the first gear 53, the fourth gear 56 is matched with the second gear 54, the first gear 53 is connected with the roller revolution shaft 25, and the second gear 54 is connected with the roller driving revolution shaft 26. The number of rotating circles N of the linkage shaft 52 is equal to the speed ratio of the linkage reduction gear set 55, and after the linkage shaft 52 rotates N circles, the number difference of the rotating circles of the first gear (53) and the second gear (54) is 1, N is a positive integer, and N is not less than 12 and not more than 25.

When the outer diameter of the first gear 53 is larger than that of the second gear 54, that is, the number of the rotation turns of the first gear 53 is 1 less than that of the rotation turns of the second gear 54, the rotation speed of the first gear can be reduced by the same stroke, so that the shaking of the whole automatic can seamer is reduced, and N is preferably 15.

As shown in fig. 5, the lifting driving assembly 4 includes a power connecting rod 41, a rotating cam 42, a movable lever 43, a rolling member 44; one end of the power connecting rod 41 is connected with an output shaft of the linkage reducing gear set 57, the other end of the power connecting rod 41 is fixed with a rotating cam 42, the rotating cam 42 is provided with a cam high point and a cam low point, the linkage reducing gear set 57 drives the power connecting rod 41 to drive the rotating cam 42, the axis of the rolling piece 44 is fixed at one end of the movable lever 43, the outline of the outer edge of the rolling piece 44 is contacted with the edge of the end face of the rotating cam 42 and swings around the lever fixing shaft 45 along with the rotation of the rotating cam 42, and the other end of the movable lever 43 is connected with the lifting connecting rod 323.

As shown in FIG. 1, the power driving device is provided with a driving motor 71, a pulley set 72 and a belt 73, an output shaft of the driving motor 71 drives the pulley set 72 to rotate through the belt 73, and the pulley set 72 is connected with the linkage shaft 52.

As shown in fig. 2, the single-circulation control switch 9 is arranged on the machine body 1, the single-circulation eccentric wheel 7 is arranged on the power connecting rod 41, the single-circulation eccentric wheel 7 rotates along with the power connecting rod 41, and when a high point on the single-circulation eccentric wheel 7 touches or senses the single-circulation control switch 9, a circumferential circulation is controlled.

The working process and the beneficial effects of the invention are as follows: firstly, the metal cover 6 is placed on the container 8 to be sealed, then the container 8 to be sealed is placed on the container positioner 322, the lifting driving assembly 4 controls the container 8 to be sealed and the container positioner 322 to ascend together, so that the pressure head 212 tightly presses the metal cover 6, the distance between the container positioner 322 and the pressure head 212 is adjusted by the distance adjusting shaft 321, and the container 8 to be sealed after being positioned is ensured not to rotate when being sealed.

The driving motor 71 is started to drive the linkage shaft 52 to rotate, the linkage shaft 52 drives the first gear 53 and the second gear 54 to rotate through the third gear 55 and the fourth gear 56 respectively, and then drives the roller driving revolution shaft 26 and the roller revolution shaft 25 to revolve around the fixed shaft 211, because the number of the revolution circles of the first gear 53 is 1 circle smaller than that of the revolution circle of the second gear 54, the first bearing 224 can roll over the first cam section 261 respectively, at the moment, the hemming roller 221 is pushed to be retracted, the return spring 27 is in a tensioning state, the hemming roller 221 hems the metal cover 6, and after the first bearing 224 completely passes over the first cam section 261, the hemming roller 221 is separated from the metal cover 6 under the action of the return spring 27; when the second bearing 234 starts to roll over the second cam segment 262, the edge pressing roller 231 is pushed to be retracted, the return spring 27 is in a tensioning state, the edge pressing roller 231 presses the metal cover 6, and after the second bearing 234 completely passes over the second cam segment 262, the edge pressing roller 231 is separated from the metal cover 6 under the action of the return spring 27, so that the action of pressing and sealing the cover is completed.

The linkage shaft 52 drives the first gear 53 and the second gear 54 to rotate through the third gear 55 and the fourth gear 56 respectively, the linkage shaft 52 drives the power connecting rod 41 to rotate after being decelerated through the linkage deceleration gear set 57 through the fifth gear 58, the linkage shaft 52 rotates N circles by setting corresponding deceleration ratio, the power connecting rod 41 rotates 1 circle, namely the rotating cam 42 is driven to rotate 1 circle, because the cam high point and the cam low point are arranged on the rotating cam 42, the movable lever 43 can be tilted when the rolling piece 44 is positioned at the cam high point of the rotating cam 42, namely the container positioner 322 is extended upwards, and when the rolling piece 44 is positioned at the cam low point of the rotating cam 42, the movable lever 43 is tilted under the action of gravity, namely the container positioner 322 is retracted downwards. That is, the interlocking shaft 52 rotates N times to drive the crimping roller 221 and the blank pressing roller 231 to complete the whole capping operation, and then the container positioner 322 realizes one-time ascending and descending operation.

And a single-circulation control switch 9 is also arranged in the embodiment, the single-circulation control switch 9 is controlled by a single-circulation eccentric wheel 7 fixed on a power connecting rod 41, the single-circulation eccentric wheel 7 and the power connecting rod 41 rotate simultaneously, when a high point on the single-circulation eccentric wheel 7 touches the single-circulation control switch 9, a driving motor is turned off, the capping work of the metal cover 6 is just completed at the moment, a container positioner 322 retracts downwards to the original position, a worker can take down the capped product, then the next product is placed on the container positioner 322, and then the driving motor 71 is started to start the next working cycle.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The automatic can seamer is characterized by comprising a machine body (1), a sealing component (2) arranged at the upper part of the machine body (1), a container placing component (3) arranged at the lower part of the machine body (1), and a lifting driving component (4) arranged at the lower part of the machine body (1), wherein the sealing component (2) is connected with a linkage driving component (5); a positioning mechanism of a metal cover (6) is arranged on the sealing component (2), the positioning mechanism is fixed on the machine body (1) through a connecting piece (28), a hemming roller mechanism and a blank pressing roller mechanism are arranged in the circumferential direction of the positioning mechanism, and the linkage driving component (5) carries out linkage control on the sealing component (2) and the lifting driving component (4) according to a set speed ratio; be provided with power drive arrangement (7) on fuselage (1), power drive arrangement promotes lift drive assembly (4) through drive linkage drive assembly (5) for wait to seal container (8) can body and metal covering (6) and closely laminate, and be fixed in positioning mechanism (21) with the container is placed between the subassembly (3), linkage drive assembly (5) drive seal the subassembly action and make hemming roller mechanism blank pressing roller mechanism revolves around waiting to seal container (8), carries out metal covering (6) and seals the action.

2. The automatic can seamer of claim 1, wherein the container placing assembly (3) is provided with a fixed guide seat (31), a movable guide shaft (32), a distance adjusting shaft (321), a container positioner (322) and a lifting connecting rod (323) are arranged on the movable guide shaft (32), the fixed guide seat (31) is fixed on the lower part of the machine body (1) and is kept on the same axis with the central shaft of the sealing component (2), the distance adjusting shaft (321) is used for adjusting the distance between the container and the metal cover gland (22) to ensure that the container to be sealed does not rotate when being sealed after being positioned, the lifting connecting rod (323) is movably connected with the lifting driving component (4), the fixed guide seat (31) is provided with a movable guide shaft (32), and the movable guide shaft (32) can stretch along the axis direction of the fixed guide seat (31) under the action of the lifting driving component (4).

3. The automatic can seamer of claim 1, wherein the positioning mechanism comprises a fixed shaft (211), a pressure head (212) is fixed on the lower end of the fixed shaft (211), and the upper end of the fixed shaft (211) is fixed on the machine body (1) through a connecting piece (28).

4. The automatic can seamer of claim 3, wherein the sealing component (2) is provided with a revolution base (24), the revolution base (24) is fixed on the machine body (1), a roller driving revolution shaft (26) is arranged in the revolution base (24), a roller revolution shaft (25) is arranged in the roller driving revolution shaft (26), the fixed shaft (211) is arranged in the roller revolution shaft (25), the hemming roller mechanism and the blank pressing roller mechanism are respectively and rotatably connected to two ends of a roller connecting arm (23), and two ends of a reset spring (27) are respectively connected with the hemming roller mechanism or the blank pressing roller mechanism and the roller connecting arm (23); the hemming roller mechanism comprises a hemming roller (221), a first roller swing arm (222), a first driving arm (223) and a first bearing (224), the hemming roller (221) is arranged on the circumference of the pressure head (212), the hemming roller (221) is fixed at one end of the first roller swing arm (222), the other end of the first roller swing arm (222) is connected with the axis of the first driving arm (223) to form a fixed angle body, the axis of the first driving arm (223) penetrates through one end of the roller connecting arm (23), and the first bearing (224) is fixed at the other end, opposite to the axis, of the first driving arm (223); the edge pressing roller mechanism (23) comprises an edge pressing roller (231), a second roller swing arm (232), a second driving arm (233) and a second bearing (234), the edge pressing roller (231) is arranged on the circumference of the pressure head (212), the edge pressing roller (231) is fixed at one end of the second roller swing arm (232), the other end of the second roller swing arm (232) is connected with the axis of the second driving arm (233) to form a fixed angle body, the axis of the second driving arm (233) penetrates through the other end of the roller connecting arm (23), and the second bearing (234) is fixed at the other end, opposite to the axis, of the second driving arm (233); the outer edge of the roller driving revolution shaft (26) is provided with a first cam section (261) and a second cam section (262), in the rotating process, the first bearing (224) rolls over the first cam section (261), and the second bearing (234) rolls over the second cam section (262).

5. The automatic can seamer of claim 4, wherein the linkage driving component (5) comprises a fixed frame (51), a linkage shaft (52), a first gear (53), a second gear (54), a third gear (55), a fourth gear (56) and a linkage speed reduction gear set (57), a fifth gear (58) is arranged on the linkage shaft (52), the fifth gear (58) and the linkage shaft (52) are of an integral structure or a split structure, the third gear (55) and the fourth gear (56) are fixed on the linkage shaft (52), the fifth gear (58) is connected with the linkage speed reduction gear set (57), the third gear (55) is matched with the first gear (53), the fourth gear (56) is matched with the second gear (54), the first gear (53) is connected with the roller revolution shaft (25), the second gear (54) is connected with the roller driving revolution shaft (26).

6. The automatic can seamer of claim 5, wherein N is the number of rotations of the linkage shaft (52) is equal to the speed ratio of the linkage speed reduction gear set (55), and after N rotations of the linkage shaft (52), the difference of 1 is the number of rotations of the first gear (53) and the second gear (54), wherein N is a positive integer, and N is greater than or equal to 12 and less than or equal to 25.

7. An automatic can seamer according to claim 6, wherein the number of revolutions of the first gear wheel (53) is 1 revolution less than the number of revolutions of the second gear wheel (54), N being 15.

8. An automatic can seamer according to claim 5, characterized in that the lifting driving assembly (4) comprises a power connecting rod (41), a rotating cam (42), a movable lever (43), a rolling element (44); the one end of power connecting rod (41) with linkage reduction gear set (57) output shaft links to each other, the other end of power connecting rod (41) is fixed with rotatory cam (42), rotatory cam (42) are equipped with cam high point and cam low point, linkage reduction gear set (57) drive power connecting rod (41) drive rotatory cam (42), rolling member (44) axle center is fixed in activity lever (43) one end, rolling member (44) outer fringe profile contact in rotatory cam (42) terminal surface edge, follow rotatory cam (42) rotate and wind lever fixed axle (45) swing, lift connecting rod (323) is connected to activity lever (43) other end, promotes activity guiding axle (32) flexible.

9. The automatic can seamer of claim 5, wherein the power driving device is provided with a driving motor (71), a pulley set (72) and a belt (73), an output shaft of the driving motor (71) drives the pulley set (72) to rotate through the belt (73), and the pulley set (72) is connected with the linkage shaft (52).

10. The automatic can seamer of claim 8, wherein a single-cycle control switch (9) is arranged on the machine body (1), a single-cycle eccentric (7) is arranged on the power connecting rod (41), the single-cycle eccentric (7) rotates along with the power connecting rod (41), and when a high point on the single-cycle eccentric (7) touches or senses the single-cycle control switch (9), a circular cycle is controlled.