CN110942910B

CN110942910B - Winding device

Info

Publication number: CN110942910B
Application number: CN201911312796.3A
Authority: CN
Inventors: 顾福乾; 朱晓春
Original assignee: Luxshare Automation Jiangsu Ltd
Current assignee: Luxshare Automation Jiangsu Ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2021-07-16
Anticipated expiration: 2039-12-18
Also published as: CN110942910A

Abstract

The invention relates to the technical field of iron core winding, and discloses a winding device, which comprises: the rotating mechanism comprises a first driving assembly, a rotating shaft and a clamping assembly, wherein the first driving assembly is in transmission connection with the rotating shaft and can drive the rotating shaft to rotate; the swing mechanism comprises a second driving assembly and a swing assembly, the swing assembly comprises a swing piece, the swing piece is rotatably arranged at the end part of the rotating shaft, the iron core can be fixed on the swing piece through the clamping assembly, and the second driving assembly is in transmission connection with the swing piece and can drive the swing piece to swing. The iron core is fixed on the swinging piece by the clamping assembly, and the first driving assembly drives the rotating shaft to rotate to drive the iron core to rotate for winding; the second driving assembly drives the swinging piece to swing, so that the wire is vertical to the arc section of the iron core in real time in the winding process, the tension of the wire is not greatly changed in the winding process, and the stability of the electrical performance of the coil can be kept. The device has simple structure and convenient operation.

Description

Winding device

Technical Field

The invention relates to the technical field of iron core winding, in particular to a winding device.

Background

In the manufacturing process of some electronic appliance products, it is generally necessary to use a core wound with a coil in cooperation with a magnet to perform electromagnetic motion. The winding of the rod-shaped iron core is relatively simple, and the copper wire can be tightly wound on the iron core only by rotating the iron core and moving back and forth in the axial direction at a certain speed.

But for the iron core of semicircle arcuation, need to guarantee that the wire winding direction is perpendicular with coil wire winding real-time circular arc section in the wire winding process, the iron core back and forth movement can't satisfy this requirement. And if the copper wire swings constantly, the copper wire is perpendicular to the arc segment of the iron core, and the realization is more complex and difficult.

Therefore, a winding device is needed to solve the above technical problems.

Disclosure of Invention

The invention aims to provide a winding device which can enable a wire to be vertical to an arc section of an iron core in real time in the winding process.

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

provided is a winding device, including:

the rotating mechanism comprises a first driving assembly, a rotating shaft and a clamping assembly, wherein the first driving assembly is in transmission connection with the rotating shaft and can drive the rotating shaft to rotate;

swing mechanism, it includes second drive assembly and swing subassembly, the swing subassembly includes the swing piece, the swing piece set up with rotating in the tip of rotation axis, the centre gripping subassembly can be fixed in the iron core on the swing piece, the second drive assembly with the transmission of swing piece is connected, can drive the swing of swing piece.

Preferably, the centre gripping subassembly includes briquetting, push rod and first guide block, the briquetting with the swinging member is articulated, the push rod set up with slidingly on the first guide block, the push rod can make the briquetting rotates, in order to cooperate the swinging member centre gripping iron core.

Preferably, the clamping assembly further comprises a transmission rod, one end of the transmission rod is exposed out of one end of the rotating shaft far away from the swinging piece, a first connecting rod and a second connecting rod are arranged on the transmission rod in parallel, a first connecting hole and a second connecting hole which are matched with the first connecting rod and the second connecting rod respectively are arranged on the rotating shaft, and the first connecting rod is connected to the push rod.

Preferably, the swing assembly further comprises a first gear, a gear support member and a first rack, the gear support member is fixed on the rotating shaft, the first gear is rotatably arranged on the gear support member, an arc-shaped surface is arranged on the swing member, meshing teeth are arranged on the arc-shaped surface, and the first gear is meshed with the swing member;

one side of the first gear is provided with a second gear, the first rack is slidably arranged on the gear support, the first rack is meshed with the second gear, and the second driving assembly can drive the first rack to reciprocate.

Preferably, one of the gear support member and the swinging member is provided with an arc-shaped guide groove, and the other is provided with a second guide block matched with the arc-shaped guide groove.

Preferably, the winding device further comprises a base and a transmission assembly, the rotating shaft is rotatably arranged on the base, the transmission assembly comprises a first belt wheel, a second belt wheel and a synchronous belt, and the first driving assembly comprises a transmission shaft and a first driving piece;

first band pulley set up in on the rotation axis, the second band pulley set up in on the transmission shaft, synchronous belt drive connects first band pulley with the second band pulley, the transmission shaft rotate set up in on the base, first driving piece set up in on the base, can drive the transmission shaft rotates.

Preferably, the output end of the first driving member is provided with a first bevel gear, the transmission shaft is provided with a second bevel gear, the first bevel gear is meshed with the second bevel gear, and the first driving member drives the transmission shaft to rotate through the first bevel gear and the second bevel gear.

Preferably, the swing assembly further comprises a connecting rod, the connecting rod is slidably disposed in the rotating shaft, and one end of the connecting rod is connected to the first rack;

the winding device further comprises a swinging connecting plate, the second driving assembly comprises a second driving piece, the second driving piece is fixed on the base, and a first bearing is arranged on the swinging connecting plate;

the first bearing is sleeved on the rotating shaft, the inner ring of the first bearing is connected to the connecting rod, and the second driving piece can drive the connecting plate to move along the axial direction of the rotating shaft.

Preferably, the second driving assembly further comprises a rack connecting plate, a second rack and a third gear, the swing connecting plate is fixed on the rack connecting plate, the rack connecting plate is connected with the base in a sliding mode through a sliding rail slider, the second rack is arranged on the rack connecting plate, the third gear is arranged at the output end of the second driving piece, and the third gear is meshed with the second rack.

Preferably, the rotating shaft, the clamping assembly, the swinging assembly, the transmission assembly and the swinging connecting plate are two and symmetrically arranged on the base.

The invention has the beneficial effects that: the iron core is fixed on the swinging piece by the clamping assembly, and the first driving assembly drives the rotating shaft to rotate to drive the iron core to rotate for winding; the second driving assembly drives the swinging piece to swing, so that the wire is vertical to the arc section of the iron core in real time in the winding process, the tension of the wire is not greatly changed in the winding process, and the stability of the electrical performance of the coil can be kept. The device has simple structure and convenient operation.

Drawings

FIG. 1 is a schematic structural diagram of a winding device provided by the present invention;

FIG. 2 is a schematic structural view of a clamping assembly and a swing assembly provided by the present invention;

FIG. 3 is a schematic structural view of a perspective of the rotating shaft, clamping assembly and oscillating assembly provided by the present invention;

FIG. 4 is a schematic structural view from another perspective of the swing assembly, the clamping assembly and the rotating shaft provided by the present invention;

FIG. 5 is a schematic structural view of a first driving assembly, a transmission assembly and a rotating shaft provided by the present invention;

FIG. 6 is a schematic structural diagram of a first driving assembly provided by the present invention;

FIG. 7 is a schematic view of the construction of the rotating shaft and a portion of the wobble assembly provided by the present invention;

fig. 8 is a schematic structural diagram of a second driving assembly provided by the present invention.

In the figure:

1. a first drive assembly; 11. a first driving member; 111. a first servo motor; 112. a first speed reducer; 12. a drive shaft; 13. a first bevel gear; 14. a second bevel gear;

2. a rotating shaft;

3. a clamping assembly; 31. briquetting; 311. an elastic portion; 312. a rotary baffle plate; 32. a push rod; 321. pressing the shaft; 33. a first guide block; 34. a transmission rod; 341. a first link; 342. a second link;

4. a second drive assembly; 41. a second driving member; 411. a second servo motor; 412. a second speed reducer; 42. a rack connecting plate; 43. a second rack; 44. a third gear; 45. a slider; 46. a slide rail;

5. a swing assembly; 51. a swinging member; 511. an arc-shaped guide groove; 52. a gear support; 521. a lower support; 522. an upper support member; 523. a second guide block; 53. a first gear; 531. a second gear; 54. a first rack; 55. a connecting rod; 551. a limiting block;

6. a base;

7. a transmission assembly; 71. a first pulley; 72. a second pulley; 73. a synchronous belt;

8. swinging the connecting plate; 81. a first bearing;

10. and (3) an iron core.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements to be referred to must have specific orientations, be constructed in specific orientations, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. 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.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As shown in fig. 1-8, the present embodiment discloses a winding device, which includes a rotating mechanism and a swinging mechanism.

Wherein, rotary mechanism includes first drive assembly 1, rotation axis 2 and centre gripping subassembly 3, and first drive assembly 1 is connected with rotation axis 2 transmission, can drive rotation axis 2 and rotate. The swing mechanism comprises a second driving assembly 4 and a swing assembly 5, the swing assembly 5 comprises a swing piece 51, the swing piece 51 is rotatably arranged at the end part of the rotating shaft 2, the iron core 10 can be fixed on the swing piece 51 by the clamping assembly 3, and the second driving assembly 4 is in transmission connection with the swing piece 51 and can drive the swing piece 51 to swing.

The iron core 10 is fixed on the swinging piece 51 by the clamping component 3, and the first driving component 1 drives the rotating shaft 2 to rotate to drive the iron core 10 to rotate for winding; the second driving assembly 4 drives the swinging member 51 to swing, so that the wire is vertical to the arc segment of the iron core 10 in real time in the winding process, the tension of the wire is not changed greatly in the winding process, and the stability of the electrical performance of the coil can be kept. The device has simple structure and convenient operation.

Specifically, as shown in fig. 2, the clamping assembly 3 includes a pressing block 31, a push rod 32 and a first guide block 33, the pressing block 31 is hinged to the swinging member 51, the push rod 32 is slidably disposed on the first guide block 33, and the first guide block 33 is fixed on the rotating shaft 2. The push rod 32 can rotate the press block 31 to clamp the iron core 10 in cooperation with the swinging member 51. More specifically, the pressing block 31 is hinged to the oscillating member 51 by a first pin whose axis is perpendicular to the axis of the rotating shaft 2. The pressing block 31 is provided with an elastic part 311, one end of the push rod 32 close to the pressing block 31 is provided with a pressing shaft 321, and when the push rod 32 moves towards the direction close to the pressing block 31, the pressing shaft 321 presses against the elastic part 311, so that the pressing block 31 rotates around the first pin shaft, the pressing block 31 is matched with the swinging member 51, the iron core 10 is clamped between the swinging member 51 and the pressing block 31, and the iron core 10 is fixed. The elastic part 311 is arranged on the pressing block 31, so that the pressing block 31 can have a certain buffering amount, and when the push rod 32 moves excessively, the elastic part 311 generates elastic deformation, so that the pressing block 31 cannot continue to move to damage the iron core 10. A rotary baffle 312 is further disposed above the pressing block 31, and when the push rod 32 moves in a direction away from the pressing block 31, the pressing shaft 321 presses against the rotary baffle 312, so that the pressing block 31 can rotate around the first pin shaft, and the pressing block 31 no longer cooperates with the swinging member 51 to clamp the iron core 10.

As shown in fig. 3 and 4, the clamping assembly 3 further includes a transmission rod 34, one end of the transmission rod 34 is exposed at one end of the rotating shaft 2 away from the swinging member 51, the transmission rod 34 is provided with a first connection rod 341 and a second connection rod 342 in parallel, the rotating shaft 2 is provided with a first connection hole matching with the first connection rod 341 and a second connection hole matching with the second connection rod 342, and the first connection rod 341 is connected to the push rod 32. The transmission rod 34 can move along the axial direction of the rotating shaft 2 to drive the push rod 32 to move towards or away from the pressing block 31, so that the pressing block 31 cooperates with the swinging member 51 to clamp the iron core 10 or not clamp the iron core 10. The movement of the transmission rod 34 is realized by an external device, and may be realized by an air cylinder, and an output end of the air cylinder is rotatably connected with an end of the transmission rod 34 exposed to the rotating shaft 2 and far away from the swinging member 51, so as not to interfere the transmission rod 34 to rotate along with the rotating shaft 2.

As shown in fig. 5, the winding device further includes a base 6 and a transmission assembly 7, the rotating shaft 2 is rotatably disposed on the base 6, and specifically, the rotating shaft 2 is rotatably disposed on the base 6 through a bearing. The transmission assembly 7 includes a first pulley 71, a second pulley 72 and a timing belt 73, and the first driving assembly 1 includes a transmission shaft 12 and a first driving member 11.

The first pulley 71 is disposed on the rotating shaft 2, the second pulley 72 is disposed on the transmission shaft 12, the synchronous belt 73 is in transmission connection with the first pulley 71 and the second pulley 72, the transmission shaft 12 is rotatably disposed on the base 6 through a bearing, and the first driving member 11 is disposed on the base 6. The first driving member 11 can drive the transmission shaft 12 to rotate, and specifically, as shown in fig. 6, the output end of the first driving member 11 is provided with a first bevel gear 13, the transmission shaft 12 is provided with a second bevel gear 14, the first bevel gear 13 is meshed with the second bevel gear 14, the first driving member 11 drives the transmission shaft 12 to rotate through the first bevel gear 13 and the second bevel gear 14, and further drives the synchronous belt 73 to rotate, so as to drive the rotating shaft 2 to rotate. The first driving member 11 includes a first servo motor 111 and a first speed reducer 112, the first speed reducer 112 is disposed on an output shaft of the first servo motor 111, and the first bevel gear 13 is disposed on an output shaft of the first speed reducer 112. The first pulley 71 is a key-free synchronous pulley, and can lock the rotating shaft 2 at any angle, thereby facilitating adjustment of the angle of the swinging member 51.

As shown in fig. 2 to 4 and 7, the swing assembly 5 further includes a first gear 53, a gear support 52 and a first rack 54, the gear support 52 is fixed to an end portion of the rotating shaft 2, the gear support 52 includes a lower support 521 and an upper support 522, and a receiving chamber is formed after the upper support 522 and the lower support 521 are spliced. The first guide block 33 is fixed on the upper support member 522, the first gear 53 is rotatably disposed on the gear support member 52 and rotatably disposed on the gear support member 52 through a bearing, and the first gear 53 is located in the accommodating chamber. The swinging piece 51 is provided with an arc-shaped surface, the arc-shaped surface is provided with meshing teeth, the first gear 53 is meshed with the swinging piece 51, and the first gear 53 rotates back and forth to drive the swinging piece 51 to swing back and forth.

The first gear 53 is provided at one side thereof with a second gear 531, and a first rack 54 is slidably provided on the gear support 52, the first rack 54 being located in the accommodation chamber. The first rack 54 is meshed with the second gear 531, and the second driving assembly 4 is in transmission connection with the first rack 54 and can drive the first rack 54 to reciprocate, so that the second gear 531 drives the first gear 53 to rotate, and the swinging piece 51 swings.

One of the gear support 52 and the swinging member 51 is provided with an arc-shaped guide groove 511, and the other is provided with a second guide block 523 matching the arc-shaped guide groove 511. In this embodiment, the swing member 51 is provided with arc-shaped guide grooves 511 on both side surfaces thereof, and the upper support member 522 and the lower support member 521 are provided with second guide blocks 523, and the second guide blocks 523 are also arc-shaped. The arc guide groove 511 and the second guide block 523 cooperate to allow the swinging member 51 to swing in a certain arc trajectory.

The swing assembly 5 further comprises a connecting rod 55, the connecting rod 55 is slidably disposed in the rotating shaft 2, and one end of the connecting rod 55 is connected to the first rack 54. The other end of the connecting rod 55 is provided with two stop blocks 551 at intervals, and the stop blocks 551 are at least partially exposed out of the rotating shaft 2.

As shown in fig. 8, the winding device further includes a swing link plate 8, and the second driving assembly 4 includes a second driving member 41, a rack link plate 42, a second rack 43, and a third gear 44. The second driving member 41 is fixed to the base 6, and the swing connecting plate 8 is provided with a first bearing 81. The first bearing 81 is sleeved on the rotating shaft 2, and the inner ring of the first bearing 81 is connected to the connecting rod 55, specifically, the inner ring of the first bearing 81 is located between the two limiting blocks 551, and the rotating shaft 2 can drive the inner ring of the first bearing 81 to rotate during the rotating process, but the swing connecting plate 8 cannot rotate along with the inner ring. But the swing link plate 8 can drive the connecting rod 55 to move along the axial direction of the rotating shaft 2 through the first bearing 81, and thus drive the first rack 54 to move.

The second driving member 41 can drive the swing connecting plate 8 to move along the axial direction of the rotating shaft 2, specifically, the swing connecting plate 8 is fixed on the rack connecting plate 42, the rack connecting plate 42 is slidably connected with the base 6 through a slide rail 46 and a slider 45, the second rack 43 is arranged on the rack connecting plate 42, the third gear 44 is arranged at the output end of the second driving member 41, and the third gear 44 is meshed with the second rack 43. The second driver 41 includes a second servomotor 411 and a second reduction gear 412, the second reduction gear 412 is provided on an output shaft of the second servomotor 411, and the third gear 44 is provided on an output shaft of the second reduction gear 412.

Rotation axis 2, centre gripping subassembly 3, swing subassembly 5, drive assembly 7 and swing connecting plate 8 are two, and equal symmetry sets up on base 6, and centre gripping subassembly 3 and swing subassembly 5 are two, can centre gripping iron core 10's both ends simultaneously, make iron core 10 fixed more firm, are convenient for carry out wire winding work.

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

1. A winding device, characterized in that it comprises:

the rotating mechanism comprises a first driving assembly (1), a rotating shaft (2) and a clamping assembly (3), wherein the first driving assembly (1) is in transmission connection with the rotating shaft (2) and can drive the rotating shaft (2) to rotate;

the swing mechanism comprises a second driving assembly (4) and a swing assembly (5), the swing assembly (5) comprises a swing piece (51), the swing piece (51) is rotatably arranged at the end part of the rotating shaft (2), the clamping assembly (3) can fix the iron core (10) on the swing piece (51), and the second driving assembly (4) is in transmission connection with the swing piece (51) and can drive the swing piece (51) to swing;

the clamping assembly (3) comprises a pressing block (31), a push rod (32) and a first guide block (33), the pressing block (31) is hinged to the swinging piece (51), the push rod (32) is slidably arranged on the first guide block (33), and the push rod (32) can enable the pressing block (31) to rotate so as to match with the swinging piece (51) to clamp the iron core (10);

the swinging assembly (5) further comprises a first gear (53), a gear supporting piece (52) and a first rack (54), the gear supporting piece (52) is fixed on the rotating shaft (2), the first gear (53) is rotatably arranged on the gear supporting piece (52), an arc-shaped surface is arranged on the swinging piece (51), meshing teeth are arranged on the arc-shaped surface, and the first gear (53) is meshed with the swinging piece (51);

a second gear (531) is arranged on one side of the first gear (53), the first rack (54) is arranged on the gear support (52) in a sliding mode, the first rack (54) is meshed with the second gear (531), and the second driving assembly (4) can drive the first rack (54) to reciprocate.

2. The winding device according to claim 1, characterized in that the clamping assembly (3) further comprises a transmission rod (34), one end of the transmission rod (34) is exposed out of the rotation shaft (2) and is arranged away from one end of the swinging member (51), a first connecting rod (341) and a second connecting rod (342) are arranged on the transmission rod (34) in parallel, a first connecting hole and a second connecting hole which are respectively matched with the first connecting rod (341) and the second connecting rod (342) are arranged on the rotation shaft (2), and the first connecting rod (341) is connected to the push rod (32).

3. Winding device according to claim 1, characterized in that the gear support (52) and the oscillating piece (51) are provided with an arc-shaped guide groove on one and a second guide block matching the arc-shaped guide groove on the other.

4. The winding device according to claim 1, characterized in that it further comprises a base (6) and a transmission assembly (7), said rotating shaft (2) being rotatably disposed on said base (6), said transmission assembly (7) comprising a first pulley (71), a second pulley (72) and a synchronous belt (73), said first driving assembly (1) comprising a transmission shaft (12) and a first driving member (11);

first band pulley (71) set up in on rotation axis (2), second band pulley (72) set up in on transmission shaft (12), hold-in range (73) transmission is connected first band pulley (71) with second band pulley (72), transmission shaft (12) rotate set up in on base (6), first driving piece (11) set up in on base (6), can drive transmission shaft (12) rotate.

5. The winding device according to claim 4, characterized in that the output end of the first driving member (11) is provided with a first bevel gear (13), the transmission shaft (12) is provided with a second bevel gear (14), the first bevel gear (13) is engaged with the second bevel gear (14), and the first driving member (11) drives the transmission shaft (12) to rotate through the first bevel gear (13) and the second bevel gear (14).

6. The winding device according to claim 4, characterized in that said oscillating assembly (5) further comprises a connecting rod (55), said connecting rod (55) being slidingly arranged inside said rotating shaft (2), one end of said connecting rod (55) being connected to said first rack (54);

the winding device further comprises a swinging connecting plate (8), the second driving assembly (4) comprises a second driving piece (41), the second driving piece (41) is fixed on the base (6), and a first bearing (81) is arranged on the swinging connecting plate (8);

the first bearing (81) is sleeved on the rotating shaft (2), the inner ring of the first bearing (81) is connected to the connecting rod (55), and the second driving piece (41) can drive the swing connecting plate (8) to move along the axial direction of the rotating shaft (2).

7. The winding device according to claim 6, characterized in that said second driving assembly (4) further comprises a rack connecting plate (42), a second rack (43) and a third gear (44), said swing connecting plate (8) is fixed on said rack connecting plate (42), said rack connecting plate (42) is slidably connected with said base (6) through a sliding rail (46) and a sliding block (45), said second rack (43) is arranged on said rack connecting plate (42), said third gear (44) is arranged at the output end of said second driving member (41), and said third gear (44) is meshed with said second rack (43).

8. The winding device according to claim 6, characterized in that the rotating shaft (2), the clamping assembly (3), the swinging assembly (5), the transmission assembly (7) and the swinging connecting plate (8) are all two and are symmetrically arranged on the base (6).