CN215879415U - Curling machine - Google Patents

Abstract

The utility model discloses a curling machine, wherein a pressing mechanism of the curling machine comprises a first motor, a rotating table and a pressing component, the rotating table and the pressing component press a barrel-shaped part on the rotating table along a first direction, an output shaft of the first motor is connected with a clutch, the other end of the clutch is in transmission connection with the rotating table, the first motor can drive the rotating table, the barrel-shaped part and the pressing component to synchronously rotate around the central axis of the rotating table, and the first direction is vertical to the horizontal plane; the second motor of the hemming mechanism is in transmission connection with the lead screw, a lead screw nut is arranged at one end of the connecting arm, the lead screw is in threaded connection with the lead screw nut, the other end of the connecting arm is in rotary connection with the hemming wheel, and the second motor can drive the connecting arm to be located on the workbench in a sliding mode, so that the hemming wheel is close to or far away from the barrel-shaped piece. The hemming machine is high in control precision, the position of the hemming wheel on the connecting arm can be prevented from deviating when the barrel-shaped part is curled, the hemming quality of the barrel-shaped part can be guaranteed, the number of defective products is reduced, and the production cost is reduced.

Description

Curling machine

Technical Field

The utility model relates to the technical field of curling devices, in particular to a curling machine.

Background

After the barrel cover of the metal barrel is subjected to punch forming, the edge of the barrel cover needs to be rolled into a round edge, the strength of the barrel cover can be greatly increased by the round edge, and a user can be prevented from being scratched by the edge of the barrel cover.

In the beading machine in the prior art, a set of beading wheels are arranged on a workbench, a processed workpiece is fixed in a fixture to rotate, a hydraulic cylinder drives the beading wheels of the beading machine to be close to a barrel cover and to be propped against the flanging of the barrel cover, and meanwhile, a motor drives a metal barrel to rotate, so that the flanging of the barrel cover is inwards turned into a round edge.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a hemming machine to solve the problems that in the prior art, the control precision of a hemming machine is low, the hemming efficiency is low, and the working stability of a hemming wheel is poor.

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

a crimper for crimping a flanged barrel, comprising:

the pressing mechanism comprises a first motor, a rotating table and a pressing assembly, the rotating table and the pressing assembly press the barrel-shaped part on the rotating table along a first direction, an output shaft of the first motor is connected with a clutch, the other end of the clutch is in transmission connection with the rotating table, the first motor can drive the rotating table, the barrel-shaped part and the pressing assembly to synchronously rotate around the central axis of the rotating table, and the first direction is perpendicular to the horizontal plane;

crimping mechanism, crimping mechanism includes second motor, lead screw, linking arm and hemming wheel, the second motor with screw drive connects, the one end of linking arm is equipped with screw-nut, the lead screw spiro union in screw-nut, the other end of linking arm with the hemming wheel rotates to be connected, the second motor can move the linking arm slides and is located the workstation, so that the hemming wheel is close to or keeps away from the tubbiness spare.

Preferably, one of the workbench and the connecting arm is provided with a sliding rail, the other is provided with a sliding groove, and the sliding rail is in sliding connection with the sliding groove.

Preferably, along the extending direction of the sliding groove, two ends of the sliding groove are both provided with limiting structures, and the sliding rail can abut against the limiting structures.

Preferably, the number of the curling mechanisms is two, and the curling mechanisms are arranged at an included angle.

Preferably, an intersection point of the center lines of the two connecting arms is located on the central axis of the turntable.

Preferably, the pressing mechanism further includes a first gear and a second gear, the first gear and the clutch are coaxially arranged at an interval, the second gear and the rotating table are coaxially arranged at an interval, and the first gear and the second gear are engaged with each other.

Preferably, the hold-down mechanism still includes the cylinder, the compress tightly the subassembly including rotate connect in the pressure disk of the output shaft of cylinder, the cylinder can drive the pressure disk is followed first direction compress tightly in the up end of tubbiness, first motor can drive the revolving stage the tubbiness with the pressure disk winds the central axis synchronous rotation of revolving stage.

Preferably, the pressing assembly further comprises a first bearing, an inner ring of the first bearing is arranged on the output shaft of the cylinder in an interference fit mode, and the pressure plate is arranged on an outer ring of the first bearing in an interference fit mode.

Preferably, the hemming mechanism further comprises a second bearing and a connecting shaft, the connecting shaft is detachably connected to the other end of the connecting arm, the inner ring of the second bearing is arranged on the connecting shaft in an interference fit mode in the first direction, and the hemming wheel is arranged on the outer ring of the second bearing in the interference fit mode.

Preferably, the hemming machine further includes a control panel for controlling the first motor, the second motor, and the cylinder.

The utility model has the beneficial effects that:

the utility model aims to provide a curling machine which comprises a pressing mechanism and a curling mechanism, wherein the pressing mechanism comprises a first motor, a rotating table and a pressing component, the rotating table and the pressing component press a barrel-shaped part on the rotating table along a first direction, an output shaft of the first motor is connected with a clutch, the other end of the clutch is in transmission connection with the rotating table, the first motor can drive the rotating table, the barrel-shaped part and the pressing component to synchronously rotate around the central axis of the rotating table, and the first direction is vertical to the horizontal plane; the hemming mechanism comprises a second motor, a screw rod, a connecting arm and a hemming wheel, the second motor is in transmission connection with the screw rod, a screw rod nut is arranged at one end of the connecting arm, the screw rod is in threaded connection with the screw rod nut, the other end of the connecting arm is in rotation connection with the hemming wheel, and the second motor can drive the connecting arm to be located on the workbench in a sliding mode so that the hemming wheel is close to or far away from the barrel-shaped part. This beading machine, revolving stage and the compress tightly the subassembly through hold-down mechanism compress tightly the tubbiness piece in the revolving stage, first motor drives the revolving stage, tubbiness piece and compress tightly the subassembly and rotate around the central axis of revolving stage is synchronous, the second motor is connected with the screw rod transmission, screw-nut screw-thread fit on lead screw and the linking arm, the hemming wheel rotates the other end of connecting in the linking arm, the second motor drives the lead screw and rotates, thereby it slides and is close to the tubbiness piece to drive the linking arm, make the hemming wheel carry out the hem to the tubbiness piece, after the hem is accomplished, the second motor drives the lead screw and rotates in the opposite direction again, thereby it slides and keeps away from the tubbiness piece to drive the linking arm, the tubbiness piece is kept away from to the hemming wheel. The clutch is arranged on the output shaft of the second motor, so that the first motor can instantly drive the barrel-shaped part to rotate around the central axis of the rotating table, the barrel-shaped part can be instantly braked, excessive curling of the barrel-shaped part can be avoided, the curling efficiency of the barrel-shaped part can be improved, the time can be saved, and the control performance of the barrel-shaped part is good; compared with the prior art that the cylinder or the hydraulic cylinder is adopted to drive the hemming wheel to be close to or far away from the barrel-shaped part, the hemming machine drives the screw rod to rotate through the second motor, so that the hemming wheel on the connecting arm is driven to be close to the barrel-shaped part, and the control precision is high; when the second motor drives the lead screw to rotate, the connecting arm is arranged on the workbench in a sliding mode through the arrangement of the connecting arm, the lead screw can be guaranteed to drive the connecting arm to be stably close to or far away from the barrel-shaped part, the connecting arm can be prevented from inclining or deviating, therefore, the position of the hemming wheel on the connecting arm is prevented from deviating when the barrel-shaped part is hemmed, the hemming quality of the barrel-shaped part is guaranteed, the number of defective products is reduced, and the production cost is reduced.

Drawings

FIG. 1 is a first schematic view of a part of a curling machine according to an embodiment of the present invention;

FIG. 2 is a schematic view of a part of a structure of a curling machine according to an embodiment of the utility model;

FIG. 3 is a schematic view of a portion of a crimper according to a specific embodiment of the present invention;

fig. 4 is an enlarged view of fig. 1 at a.

In the figure:

1. a barrel;

21. a first motor; 22. a rotating table; 23. a compression assembly; 231. a platen; 232. a first bearing; 233. a first limit piece; 24. a clutch; 25. a first gear; 26. a second gear; 27. a cylinder; 28. a first shaft; 29. a second shaft;

31. a second motor; 32. a screw rod; 33. a connecting arm; 331. a feed screw nut; 332. a slide rail; 333. a first through hole; 334. a second through hole; 34. a hemming wheel; 35. a second bearing; 36. a connecting shaft; 37. a second limiting member; 38. a limit nut; 39. a speed reducer;

4. a work table;

5. a support frame.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The utility model provides a curling machine, as shown in fig. 1-4, the curling machine comprises a pressing mechanism and a curling mechanism, the pressing mechanism comprises a first motor 21, a rotating table 22 and a pressing assembly 23, the rotating table 22 and the pressing assembly 23 press a barrel-shaped member 1 to the rotating table 22 along a first direction, an output shaft of the first motor 21 is connected with a clutch 24, the other end of the clutch 24 is connected to the rotating table 22 in a transmission manner, the first motor 21 can drive the rotating table 22, the barrel-shaped member 1 and the pressing assembly 23 to synchronously rotate around the central axis of the rotating table 22, and the first direction is vertical to the horizontal plane; the hemming mechanism comprises a second motor 31, a screw rod 32, a connecting arm 33 and a hemming wheel 34, the second motor 31 is in transmission connection with the screw rod 32, a screw rod nut 331 is arranged at one end of the connecting arm 33, the screw rod 32 is in threaded connection with the screw rod nut 331, the other end of the connecting arm 33 is in rotation connection with the hemming wheel 34, and the second motor 31 can drive the connecting arm 33 to slide on the workbench 4 so that the hemming wheel 34 is close to or far away from the barrel-shaped member 1.

As shown in fig. 1-4, in the hemming machine, the barrel 1 is pressed against the rotary table 22 by the rotary table 22 and the pressing assembly 23 of the pressing mechanism, the first motor 21 drives the rotary table 22, the barrel 1 and the pressing assembly 23 to rotate synchronously around the central axis of the rotary table 22, the second motor 31 is in transmission connection with the lead screw 32, the lead screw 32 is in threaded fit with the lead screw nut 331 on the connecting arm 33, the hemming wheel 34 is rotatably connected to the other end of the connecting arm 33, the second motor 31 drives the lead screw 32 to rotate, so as to drive the connecting arm 33 to slide and approach to the barrel 1, so that the hemming wheel 34 hems the barrel 1, and after hemming is completed, the second motor 31 further drives the lead screw 32 to rotate in the opposite direction, so as to drive the connecting arm 33 to slide and move away from the barrel 1, and the hemming wheel 34 moves away from the barrel 1. The clutch 24 is arranged on the output shaft of the second motor 31, so that the clutch 24 can enable the first motor 21 to instantly drive the barrel-shaped part 1 to rotate around the central axis of the rotating table 22, and can also instantly brake the barrel-shaped part 1, thereby avoiding excessive curling of the barrel-shaped part 1, improving the curling efficiency of the barrel-shaped part 1, saving time and having good control performance on the barrel-shaped part 1; compared with the prior art that the cylinder or the hydraulic cylinder is adopted to drive the hemming wheel to be close to or far away from the barrel-shaped part, the hemming machine drives the screw rod 32 to rotate through the second motor 31, so that the hemming wheel 34 on the connecting arm 33 is driven to be close to the barrel-shaped part 1, and the control precision is high; when the second motor 31 drives the screw rod 32 to rotate, the connecting arm 33 is arranged on the workbench 4 in a sliding mode, the screw rod 32 can be guaranteed to drive the connecting arm 33 to be stably close to or far away from the barrel-shaped part 1, the connecting arm 33 can be prevented from inclining or deviating, accordingly, the position of the hemming wheel 34 on the connecting arm 33 is prevented from deviating when the barrel-shaped part 1 is hemmed, the hemming quality of the barrel-shaped part 1 is guaranteed, the number of defective products is reduced, and the production cost is reduced.

As shown in fig. 1 and 2, the curling mechanism further includes a speed reducer 39, an output shaft of the second motor 31 is fixedly connected to an input shaft of the speed reducer 39, an output shaft of the speed reducer 39 is fixedly connected to the lead screw 32, and an output shaft of the second motor 31 can rotate in a forward or reverse direction, so as to drive the curling wheel 34 on the connecting arm 33 to approach or leave the barrel-shaped member 1.

As shown in fig. 1, the pressing mechanism further includes a first gear 25 and a second gear 26, the first gear 25 and the clutch 24 are coaxially and alternately disposed, the second gear 26 and the rotary table 22 are coaxially and alternately disposed, and the first gear 25 and the second gear 26 are engaged with each other. Specifically, the shaft connecting the first gear 25 and the clutch 24 is the first shaft 28, the shaft connecting the second gear 26 and the rotating table 22 is the second shaft 29, and the output shaft of the first motor 21 and the first shaft 28 are connected or disconnected through the clutch 24, so that the first motor 21 instantaneously drives the barrel 1 to rotate around the central axis of the rotating table 22, the barrel 1 can be instantaneously braked, excessive curling of the barrel 1 can be avoided, the curling efficiency of the barrel 1 can be improved, time is saved, and the controllability of the barrel 1 is good.

As shown in fig. 1 to 3, the hemming machine further includes a support frame 5, and the support frame 5 is used for supporting the pressing mechanism. In particular, the first shaft 28 and the second shaft 29 are both rotatably connected to the support frame 5.

Alternatively, as shown in fig. 1, one of the working platform 4 and the connecting arm 33 is provided with a sliding rail 332, and the other is provided with a sliding groove, and the sliding rail 332 is slidably connected with the sliding groove. In this embodiment, the workbench 4 is provided with a sliding groove, the connecting arm 33 is provided with a sliding rail 332, the sliding rail 332 is slidably connected with the sliding groove, when the first motor 21 drives the screw rod 32 to rotate, the screw rod 32 is in threaded connection with the screw rod nut 331, so that the connecting arm 33 is driven to slide, the hemming wheel 34 on the connecting arm 33 slides to be close to or far away from the barrel-shaped member 1, the position of the hemming wheel 34 can be prevented from being shifted when the barrel-shaped member 1 is hemmed, the processing quality of the barrel-shaped member 1 is ensured, the number of defective products is reduced, and the production cost is reduced. Alternatively, a sliding groove is provided on the connecting arm 33, and a sliding rail 332 is provided on the table 4, and the sliding groove is slidably connected to the sliding rail 332.

Optionally, along the extending direction of the sliding groove, both ends of the sliding groove are provided with a limiting structure, and the sliding rail 332 can abut against the limiting structure. Through set up limit structure at the both ends of spout, limit structure can inject slide rail 332's motion range, prevents that slide rail 332 from deviating from in the spout. Preferably, the limiting structure is a plate, and the two ends of the sliding groove are both provided with plates, so as to limit the movement range of the sliding rail 332.

Optionally, as shown in fig. 2, two crimping mechanisms are provided, and the crimping mechanisms are arranged at an included angle. By arranging the two curling mechanisms, the curling wheel 34 of one curling mechanism in the two curling mechanisms performs primary processing on the curled edge of the barrel-shaped part 1, and after the primary processing is finished, the curling wheel 34 of the other curling mechanism performs finish machining on the curled edge which is finished by the primary processing, so that the quality of the curled edge of the barrel-shaped part 1 is improved. It can be understood that the number of the crimping mechanisms can be adaptively adjusted according to actual working conditions.

Optionally, the intersection of the centerlines of the two connecting arms 33 is located at the central axis of the turntable 22. By arranging the intersection point of the central lines of the two connecting arms 33 to be positioned on the central axis of the rotating table 22, the quality of the curled edge of the barrel 1 can be further improved, and the phenomenon that the curled edge of the barrel 1 is irregular in profile during processing is avoided.

Optionally, as shown in fig. 1 to 3, the curling machine further includes an air cylinder 27, the pressing assembly 23 includes a pressing plate 231 rotatably connected to an output shaft of the air cylinder 27, the air cylinder 27 can drive the pressing plate 231 to press the upper end surface of the barrel 1 along the first direction, and the first motor 21 can drive the rotating table 22, the barrel 1 and the pressing plate 231 to rotate synchronously around the central axis of the rotating table 22. It can be understood that the magnitude of the pressing force applied by the pressure plate 231 to the barrel 1 is controlled by adjusting the displacement of the air cylinder 27 driving the pressure plate 231 to move downward along the first direction, so as to ensure that the magnitude of the pressing force is within the allowable value range, prevent the barrel 1 from being crushed, and the upper end surface of the barrel 1 and the surface of the pressure plate 231 have frictional resistance, and the lower end surface of the barrel 1 and the surface of the rotating disk have frictional force, so that the first motor 21 drives the rotating platform 22, the barrel 1 and the pressure plate 231 to synchronously rotate around the central axis of the rotating platform 22, thereby facilitating the flanging of the barrel 1 by the flanging wheel 34. Wherein, the cylinder 27 is fixedly arranged at the upper end of the supporting frame 5 along the first direction, and the output shaft of the cylinder 27 passes through the supporting frame 5 to be rotatably connected with the pressure plate 231.

Optionally, as shown in fig. 3, the pressing assembly 23 further includes a first bearing 232, an inner ring of the first bearing 232 is disposed on the output shaft of the cylinder 27 in an interference fit manner, and the pressure plate 231 is disposed on an outer ring of the first bearing 232 in an interference fit manner. Thereby achieving a rotational connection of the pressure plate 231 to the output shaft of the cylinder 27 so that the first motor 21 can drive the rotation table 22, the tub 1 and the pressure plate 231 to rotate synchronously about the central axis of the rotation table 22. In this embodiment, the output shaft of the cylinder 27 is provided with a first limiting member 233, one end of the inner ring of the first bearing 232 abuts against the first limiting member 233, the first limiting member 233 is screwed to the output shaft of the cylinder 27 through a screw and is located at one end of the output shaft of the cylinder 27 close to the barrel 1, the output shaft of the cylinder 27 is further provided with a retaining ring, and the other end of the inner ring of the first bearing 232 limits the assembly position of the first bearing 232 through the retaining ring, so that the assembly position of the first bearing 232 along the axial direction is completely limited. In addition, the pressure plate 231 is sleeved on the outer ring of the first bearing 232 in an interference manner and is fixedly connected with the outer ring of the first bearing 232 through a screw, so that the connection reliability of the pressure plate 231 is further ensured.

Optionally, as shown in fig. 1 and 4, the roll-up mechanism further includes a second bearing 35 and a connecting shaft 36, the connecting shaft 36 is detachably connected to the other end of the connecting arm 33, an inner ring of the second bearing 35 is interference sleeved on the connecting shaft 36, and the hemming wheel 34 is interference sleeved on an outer ring of the second bearing 35. So arranged as to rotatably connect the hemming wheel 34 to the connecting arm 33. In this embodiment, the connecting shaft 36 is provided with a limiting nut 38 and two second limiting members 37, and one second limiting member 37, the second bearing 35, the other second limiting member 37 and the limiting nut 38 are sequentially assembled on the connecting shaft 36 along the axial direction of the connecting shaft 36, wherein the two limiting members are all sleeved on the connecting shaft 36 and respectively abut against two ends of the inner ring, and the limiting nut 38 is screwed on the connecting shaft 36. To define the assembly position of the hemming wheel 34, to ensure that the hemming wheel 34 can effectively hem the tub 1, and to facilitate assembly, replacement and maintenance of the hemming wheel 34.

As shown in fig. 4, the connecting shaft 36 has threads on portions thereof near the two ends, the connecting arm has a first through hole 333 and a second through hole 334, the two ends of the connecting shaft 26 respectively pass through the first through hole 333 and the second through hole 334, and then are respectively screwed with the threads on the two ends of the connecting shaft 36 by two nuts, so as to detachably connect the connecting shaft 36 to the connecting arm 33.

Optionally, the hemming machine further comprises a control panel for controlling the first motor 21, the second motor 31 and the cylinder 27. It can be understood that the control panel is electrically connected to the first motor 21, the second motor 31 and the cylinder 27, and can control the start/stop and the output rotation speed of the first motor 21 and the second motor 31, and can control the output pressure of the cylinder 27, so as to further improve the curling efficiency and the operability of the curling machine. In other embodiments, the first motor 21, the second motor 31, and the air cylinder 27 may be electrically connected to the PC.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A beader for beading a flanged barrel (1), characterized by comprising:

the pressing mechanism comprises a first motor (21), a rotating table (22) and a pressing assembly (23), the rotating table (22) and the pressing assembly (23) press the barrel-shaped part (1) to the rotating table (22) along a first direction, an output shaft of the first motor (21) is connected with a clutch (24), the other end of the clutch (24) is in transmission connection with the rotating table (22), the first motor (21) can drive the rotating table (22), the barrel-shaped part (1) and the pressing assembly (23) to synchronously rotate around the central axis of the rotating table (22), and the first direction is perpendicular to the horizontal plane;

hemming mechanism, hemming mechanism includes second motor (31), lead screw (32), linking arm (33) and hemming wheel (34), second motor (31) with lead screw (32) transmission is connected, the one end of linking arm (33) is equipped with screw-nut (331), lead screw (32) spiro union in screw-nut (331), the other end of linking arm (33) with hemming wheel (34) rotate to be connected, second motor (31) can drive linking arm (33) slip is located workstation (4), so that hemming wheel (34) are close to or keep away from tubbiness spare (1).

2. Hemming machine according to claim 1, characterised in that one of said work table (4) and said connecting arm (33) is provided with a sliding track (332) and the other with a sliding slot, said sliding track (332) and said sliding slot being slidingly connected.

3. Hemming machine according to claim 2, wherein, in the extension direction of the chute, both ends of the chute are provided with a stop structure against which the sliding rail (332) can abut.

4. The hemming machine of claim 1 wherein there are two of the hemming mechanisms, the hemming mechanisms being angled.

5. Hemming machine according to claim 1, wherein the intersection of the two connecting arms (33) centrelines is located at the centre axis of the rotary table (22).

6. Hemming machine according to claim 1, characterized in that said pressing mechanism further comprises a first gear (25) and a second gear (26), said first gear (25) and said clutch (24) being coaxially and spaced apart, said second gear (26) and said rotating table (22) being coaxially and spaced apart, said first gear (25) and said second gear (26) being in mesh.

7. The hemming machine according to claim 1, wherein the pressing mechanism further comprises an air cylinder (27), the pressing assembly (23) comprises a pressing plate (231) rotatably connected to an output shaft of the air cylinder (27), the air cylinder (27) can drive the pressing plate (231) to press the upper end face of the barrel (1) along the first direction, and the first motor (21) can drive the rotating table (22), the barrel (1) and the pressing plate (231) to rotate synchronously around a central axis of the rotating table (22).

8. The hemming machine according to claim 7, wherein the pressing assembly (23) further comprises a first bearing (232), an inner ring of the first bearing (232) is arranged on the output shaft of the cylinder (27) in an interference fit manner, and the pressure plate (231) is arranged on an outer ring of the first bearing (232) in an interference fit manner.

9. The hemming machine according to claim 1, wherein the hemming mechanism further comprises a second bearing (35) and a connecting shaft (36), the connecting shaft (36) is detachably connected to the other end of the connecting arm (33), an inner ring of the second bearing (35) is arranged on the connecting shaft (36) in an interference fit manner along the first direction, and the hemming wheel (34) is arranged on an outer ring of the second bearing (35) in an interference fit manner.

10. Hemming machine according to claim 7, characterized in that it further comprises a control panel for controlling said first motor (21), said second motor (31) and said cylinder (27).

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