CN212314104U

CN212314104U - Adhesive sticker labeling machine

Info

Publication number: CN212314104U
Application number: CN202020327177.3U
Authority: CN
Inventors: 封其柱
Original assignee: Suzhou Jiadahe Machinery Co ltd
Current assignee: Suzhou Jiadahe Machinery Co ltd
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2021-01-08
Anticipated expiration: 2030-03-16

Abstract

The utility model discloses a non-setting adhesive labeller, including the labeller machine case that is provided with two transmission boards, two transmission board symmetries set up and be provided with the transmission band between the two, still be provided with mark header mechanism and press a bottle mechanism on the labeller machine case, the bottle has been placed on the transmission band, the transmission band drives the bottle through setting up the motor on one of them transmission board and removes the other end from its one end, and the bottle is through marking header mechanism and pressing a bottle mechanism, when the bottle is the motion that moves its other end from the one end of transmission band, mark header mechanism can with place the body contact of bottle on the transmission band and paste label paper on the body of the bottle, press a bottle mechanism can with place the bottle top contact of bottle on the transmission band, the utility model aims to provide a non-setting adhesive labeller that can.

Description

Adhesive sticker labeling machine

Technical Field

The utility model relates to a non-setting adhesive labeller.

Background

A labeling machine (labeling machine) is a device for applying a paper or metal foil label to a predetermined packaging container with an adhesive. The labeler is an indispensable component of modern packaging, the types of labelers produced in China are gradually increased at present, the technical level is also greatly improved, the existing non-setting adhesive labeler is used for labeling bottles, the bottles are placed on a conveyor belt for conveying, the labels are labeled by a label marking mechanism when the bottles move to the labeling mechanism, no stabilizing mechanism is used for fixing the bottles, the labeling is slow, the labeling efficiency is low, the labeling is possible to deviate or topple when the bottles are labeled, the label paper is askew, the labeled bottles cannot be put into use, and therefore the labeling efficiency is low for the non-setting adhesive labeler.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model aims to improve the efficiency of labeling the adhesive sticker labeling machine.

In order to achieve the above purpose, the utility model discloses a technical scheme is: non-setting adhesive labeller, including the labeller machine case that is provided with two transmission boards, two transmission board symmetries set up and be provided with the transmission band between the two, still be provided with mark head mechanism and bottle pressing mechanism on the labeller machine case, the bottle has been placed on the transmission band, the transmission band drives the bottle through setting up the motor on one of them transmission board and moves to the other end from its one end, and the bottle passes through mark head mechanism and bottle pressing mechanism, when the bottle is the motion that moves to its other end from the one end of transmission band, mark head mechanism can with place the body contact of bottle on the transmission band and paste label paper on the body, bottle pressing mechanism can with place the bottle top contact of bottle on the transmission band.

The utility model discloses non-setting adhesive labeller's beneficial effect is, non-setting adhesive labeller includes labeller machine case, be provided with the transmission plate on the labeller machine case, mark header mechanism and bottle pressing mechanism, two transmission plate symmetries set up and be provided with the transmission band between the two, after the bottle is placed on the transmission band, the bottle moves along with the conveyer belt, the transmission band transmits the bottle to mark header mechanism, mark header mechanism with place the body contact of bottle and paste label paper on the body on the transmission band, press bottle mechanism and place the bottle top contact of bottle and make it remain stable on the transmission band when pasting the mark, guarantee to provide sufficient steadiness messenger bottle when pasting the mark and paste the mark and remain stable, the effectual bottle efficiency of pasting that has improved.

As a further improvement of the utility model, the two transmission plates are provided with a correcting mechanism which is positioned at the left side of the marking mechanism, the two transmission plates are provided with an upper plate and a lower plate respectively, the correcting mechanism comprises two transmission components which are respectively arranged at the two upper plates, the transmission components comprise a rotating shaft and two gears, the free end of the rotating shaft passes through the lower plate, the two gears are both positioned between the upper plate and the lower plate, the rotating shaft is provided with a driving wheel which is positioned between the upper plate and the lower plate, a rack is sleeved between the driving wheel and the two gears, the moving direction of the rack is the same as the moving direction of the transmission belt, the operating end surfaces of the two racks correspond to each other, the width between the two racks is larger than the width of the bottle, a main bevel gear is arranged on the rotating shaft, a connecting shaft is arranged between the two transmission plates, the two ends of the, any one rotating shaft is connected with a driving device, the driving device can drive the rotating shaft to drive the main bevel gear and the driven bevel gear meshed with the main bevel gear to rotate, and bottles on the conveying belt can enter the marking mechanism from a space between two racks which are driven by the rotating shaft to rotate simultaneously.

The bottle is placed on the conveyer belt by staff, and the bottle is round bottle or square bottle, and its position of the body of bottle to marking head mechanism can shift, and the bottle angle of square bottle is facing to marking head mechanism, and the subsides mark is askew this moment, and after the bottle was placed on the conveyer belt, the bottle moved along with the conveyer belt. The driving device drives one of the rotating shafts to rotate, the connecting shaft rotates and then drives the other rotating shaft to rotate due to the fact that the secondary bevel gears arranged on the connecting shaft are meshed with the main bevel gears at one end of the rotating shaft, the two racks move simultaneously, the operating end faces of the two racks are corresponding, the width between the two racks is slightly larger than that of the bottle, the bottle can just pass through the connecting shaft, when the round bottle is filled, the bottle enters the header mechanism through the two racks, when the square bottle is filled, the two racks guide the bottle to enter the header mechanism, and then the body of the square bottle faces the header mechanism.

As the utility model discloses a further improvement is, drive arrangement is the rotating electrical machines, the output shaft and the axis of rotation lower extreme fixed connection of rotating electrical machines, and the rotating electrical machines drives one of them axis of rotation and rotates, owing to set up the main bevel gear meshing from bevel gear and axis of rotation one end on the connecting axle, the connecting axle rotates and then takes another axis of rotation to rotate, and two racks remove simultaneously, and the bottle passes through between two racks.

As a further improvement, the utility model discloses a still be provided with on two transmission boards and lead bottle mechanism and its right side that is located mark head mechanism, lead bottle mechanism including setting up dull and stereotyped and the rolling member at two transmission boards respectively, the rolling member includes two roller bearings, the cover is equipped with track and dull and stereotyped symmetry between two roller bearings, track moving direction is the same with transmission band moving direction, the width between the track and the dull and stereotyped two is greater than the width of bottle, the output shaft of one of them roller bearing and first motor, the bottle is followed and is driven the bottle of placing on the transmission band through just the track between the track and the dull and stereotyped two and rotated. After the label is pasted on the bottle through the label marking mechanism, label paper may not be tight enough on the bottle, in order to avoid the label paper from falling off from the bottle, the bottle after being pasted with the label continues to move along with the conveyor belt, the width between the track and the flat plate is slightly larger than that of the bottle, so that the bottle just can pass through the track between the track and the flat plate, the first motor drives the roller to rotate, the track is further driven to move, the track can drive the bottle to rotate, and as the flat plate is static, the bottle rotates and passes through the flat plate, the label paper of the bottle body can be in contact with the flat plate and is pasted on the bottle through the flat plate more tightly.

As a further improvement, the header mechanism is including setting up the mounting panel at labeller machine case, the one end rotation of keeping away from the conveyer belt on the mounting panel is provided with the unreeling wheel that is used for placing the label, the one end that is close to the conveyer belt on the mounting panel is provided with peels off the board, it still is provided with the rolling wheel to peel off the board and unreel between the wheel, the rolling wheel rotates under the drive of second motor, drive the label conveying, the label is peeled off through peeling off the board, contact on the label on label and the body of transmission band bottle and attach on it, the label rolling after peeling off the board is peeled off is in the rolling wheel, the second motor drives the rolling wheel and rotates, the label conveying on the pulling rolling wheel, the label removes peeling off the board, peeling off the body department that the label paper on the board pasted the bottle, the label rolling after the.

As a further improvement, the marking head mechanism has two, and two marking head mechanisms can be uninterruptedly used for marking the label on the bottle, so that the label sticking efficiency of the bottle is further improved.

As a further improvement of the utility model, the bottle pressing mechanism comprises a transmission shaft and two positioning plates which are arranged on a labeling machine case and are connected, two rotating wheels are arranged between the two positioning plates, a first chain is sleeved on the two rotating wheels, the moving direction of the first chain is the same as the moving direction of the transmission belt, one end of the transmission shaft is fixedly connected with one of the rotating wheels, the other end of the transmission shaft is connected with a rotating assembly, one end of the rotating assembly, which is far away from the bottle pressing assembly, is connected with an output shaft of a third motor, the first chain can be contacted with the bottle tops of the bottles on the transmission belt and can move simultaneously with the bottle tops, when the bottles are placed on the transmission belt, the bottles move along with the transmission belt, the label marking mechanism marks the bottles, at the moment, the third motor drives the rotating assembly to rotate, the rotating assembly drives the transmission shaft to rotate, and then drives, the first chain and the bottles move simultaneously, and the first chain is contacted with the bottle tops to keep the bottles stable.

As a further improvement of the utility model, the runner assembly includes articulated main part and slave, main part and slave all include two panels and set up the driving wheel between two panels, all be provided with the second chain between two driving wheels, a driving wheel on the main part is connected with the output shaft of third motor, another driving wheel passes through connecting axle fixed connection with arbitrary driving wheel on the slave on the main part, another driving wheel is connected with the transmission shaft free end on the slave, the driving wheel of third motor drive main part rotates, and then drive the second chain and rotate on the main part, it rotates to drive a driving wheel on the slave through the connecting axle, the second chain on the slave rotates, drive and the transmission shaft rotation that another driving wheel on the slave is connected.

Drawings

FIG. 1 is a view of the entire apparatus of the present embodiment;

FIG. 2 is a structural view of the correcting mechanism of this embodiment;

FIG. 3 is a structural view of the bottle guide mechanism of the present embodiment;

FIG. 4 is a structural diagram of a header mechanism according to the present embodiment;

fig. 5 is a structural view of the bottle-pressing mechanism of the present embodiment.

In the figure:

1-labeling machine case; 2-a transmission plate; 21-upper plate; 22-lower plate; 3-a header mechanism; 31-a mounting plate; 32-unwinding wheel; 33-a peel plate; 34-a winding wheel; 4-a bottle pressing mechanism; 41-a positioning plate; 42-a first chain; 43-a drive shaft; 44-a third motor; 5-a correction mechanism; 6-bottle guide mechanism; 61-plate; 62-track; 7-driving wheel; 8-a rotating shaft; 9-gear; 10-a main bevel gear; 11-slave bevel gear; 12-a connecting shaft; 13-a master; 14-a slave; 15-a panel; 16-driving wheels.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

Referring to the attached drawings 1-5, the self-adhesive labeling machine of the embodiment includes a labeling machine case 1 provided with two transmission plates 2, the two transmission plates 2 are symmetrically arranged and a transmission belt is arranged between the two transmission plates, and the self-adhesive labeling machine is characterized in that: the labeling machine case 1 is also provided with a label marking mechanism 3 and a bottle pressing mechanism 4, a bottle is placed on the transmission belt, the transmission belt can drive the bottle to move from one end to the other end of the bottle through a motor arranged on one of the transmission plates 2, the bottle passes through the label marking mechanism 3 and the bottle pressing mechanism 4, when the bottle moves from one end to the other end of the transmission belt, the label marking mechanism 3 can be contacted with a bottle body of the bottle placed on the transmission belt and can paste label paper on the bottle body, the bottle pressing mechanism 4 can be contacted with the bottle top of the bottle placed on the transmission belt, the self-adhesive labeling machine comprises a labeling machine case 1, the labeling machine case 1 is provided with the label marking mechanism 2, the label marking mechanism 3 and the bottle pressing mechanism 4, the two transmission plates 2 are symmetrically arranged, the transmission belts are arranged between the two transmission plates, after the bottle is placed on the transmission belts, the bottle moves along with the, the header mechanism 3 contacts with the body of placing the bottle on the conveyer belt and pastes label paper on the body, presses bottle mechanism 4 and the bottle top contact of placing the bottle on the conveyer belt and makes it remain stable when pasting the mark, guarantees to provide sufficient steady force when pasting the mark and makes the bottle paste mark remain stable, the effectual bottle that has improved pastes the mark efficiency.

The two transmission plates 2 of the embodiment are provided with a correcting mechanism 5 which is positioned at the left side of the header mechanism 3, the two transmission plates 2 are both provided with an upper plate 21 and a lower plate 22, the correcting mechanism 5 comprises two transmission assemblies which are respectively arranged on the two upper plates 21, each transmission assembly comprises a rotating shaft 8 and two gears 9, the free end of each rotating shaft 8 passes through the lower plate 22, the two gears 9 are both positioned between the upper plate 21 and the lower plate 22, the rotating shaft 8 is provided with a driving wheel 7 which is positioned between the upper plate 21 and the lower plate 22, a rack is sleeved between the driving wheel 7 and the two gears 9, the moving direction of the rack is the same as the moving direction of the transmission belts, the operating end surfaces of the two racks correspond to each other, the width between the two racks is larger than the width of a bottle, the rotating shaft 8 is provided with a main bevel gear 10, a connecting shaft 12 is arranged between the two transmission plates 2, two ends of the connecting, any one of the rotating shafts 8 is connected with a driving device, the driving device can drive the rotating shaft 8 to drive the main bevel gear 10 and the driven bevel gear 11 meshed with the main bevel gear to rotate, and bottles on a conveying belt can enter the marking mechanism 3 from between two racks which are driven by the rotating shaft 8 to rotate simultaneously.

The bottles are placed on the conveyor belt by workers, the bottles are round bottles or square bottles, the positions of the bodies of the bottles relative to the marking head mechanisms 3 can be deviated, the corners of the square bottles face the marking head mechanisms 3, the labeling is askew, when the bottles are placed on the transmission belt, the bottles move along with the transmission belt, the driving device drives one of the rotating shafts 8 to rotate, because the secondary bevel gear 11 arranged on the connecting shaft 12 is meshed with the primary bevel gear 10 at one end of the rotating shaft 8, the connecting shaft 12 rotates to drive the other rotating shaft 8 to rotate, the two racks move simultaneously, the operating end surfaces of the two racks correspond to each other, the width between the two racks is slightly larger than the width of a bottle, the bottle can pass through the two racks exactly, when the bottle is round, the bottle is from getting into mark head mechanism 3 between two racks, and two racks are just right the bottle entering and are made it get into mark head mechanism 3 again during square bottle, and the body of square bottle is towards mark head mechanism 3 this moment.

The driving device of this embodiment is a rotating electrical machine, the output shaft of the rotating electrical machine is fixedly connected with the lower end of the rotating shaft 8, the rotating electrical machine drives one of the rotating shafts 8 to rotate, because the secondary bevel gear 11 arranged on the connecting shaft 12 is meshed with the main bevel gear 10 at one end of the rotating shaft 8, the connecting shaft 12 rotates to further drive the other rotating shaft 8 to rotate, the two racks move simultaneously, and the bottle passes through between the two racks.

Still be provided with on two transmission boards 2 of this embodiment and lead bottle mechanism 6 and it is located the right side of marking head mechanism 3, it is including setting up dull and stereotyped 61 and the rolling member at two transmission boards 2 respectively to lead bottle mechanism, the rolling member includes two rollers, the cover is equipped with track 62 and dull and stereotyped 61 symmetry between two rollers, track 62 moving direction is the same with transmission band moving direction, the width between track 62 and the dull and stereotyped 61 the two is greater than the width of bottle, one of them roller bearing is connected with the output shaft of first motor, the bottle can be followed and passed through between track 62 and the dull and stereotyped 61 the two and the track 62 can drive the bottle of placing on the transmission band and rotate. After the bottles are labeled by the label labeling mechanism, label paper may not be tight enough on the bottles, so as to avoid the label paper from falling off the bottles, the labeled bottles continue to move along with the conveyor belt, the width between the crawler belt 62 and the flat plate 61 is slightly larger than that of the bottles, the bottles can just pass through the crawler belt and the flat plate 61, the first motor drives the roller to rotate, the crawler belt 62 is further driven to move, the crawler belt 62 can drive the bottles to rotate, the flat plate 61 is stationary, the bottles rotate from the flat plate 61 and pass through, and the label paper of the bottle body can be in contact with the flat plate 61 and is more tightly adhered to the bottles through the flat plate 61.

The label marking mechanism 3 of the embodiment comprises a mounting plate 31 arranged on the labeling machine case 1, an unwinding wheel 32 used for placing labels is rotatably arranged at one end, far away from the conveying belt, of the mounting plate 31, a stripping plate 33 is arranged at one end, close to the conveying belt, of the mounting plate 31, a winding wheel 34 is further arranged between the stripping plate 33 and the unwinding wheel 32, the winding wheel 34 is driven by a second motor to rotate, label conveying is driven, labels are stripped through the stripping plate 33, label paper on the labels is contacted with and attached to the bodies of conveying belt bottles, the labels stripped by the stripping plate 33 are wound on the winding wheel 34, the second motor drives the winding wheel 34 to rotate, the labels on the winding wheel 34 are pulled to be conveyed, the labels are moved to the stripping plate 33, the label paper on the labels is attached to the bodies of the bottles by the stripping plate 33, and the stripped labels are driven to be wound.

The mark head mechanism 3 of this embodiment has two, and two mark head mechanisms can incessantly paste the mark to the bottle, further improve the bottle and paste mark efficiency.

Bottle mechanism 4 of this embodiment includes transmission shaft 43 and two locating plates 41 that set up on labeller machine case 1 and be connected, it is equipped with first chain 42 to set up the cover on two runners and two runners between two locating plates 41, first chain 42 moving direction is the same with transmission band moving direction, the one end of transmission shaft 43 and one of them runner fixed connection, the other end and the rotating component of transmission shaft 43 are connected, the rotating component is kept away from the one end of pressing the bottle subassembly and is connected with the output shaft of third motor 44, first chain 42 can and the conveyer belt on the bottle top contact of bottle and the two can remove simultaneously. After the bottle was placed on the conveyer belt, the bottle removed along with the conveyer belt, and mark is pasted to the bottle to mark head mechanism 3, and at this moment, third motor 44 drives the runner assembly and rotates, and the runner assembly drives transmission shaft 43 and rotates, and then drives the runner rotation with transmission shaft 43 fixed connection, and then makes first chain work, and first chain and bottle remove simultaneously, and first chain makes the bottle remain stable with the bottle top contact.

The rotating assembly of the embodiment comprises a main part 13 and a driven part 14 which are hinged, wherein the main part 13 and the driven part 14 respectively comprise two panels 15 and a driving wheel 16 arranged between the two panels 15, a second chain is arranged between the two driving wheels 16, one driving wheel 16 on the main part 13 is connected with an output shaft of a third motor 44, the other driving wheel 16 on the main part 13 is fixedly connected with any one driving wheel 16 on the driven part 14 through a connecting shaft, and the other driving wheel 16 on the driven part 14 is connected with the free end of a transmission shaft 43. The third motor 44 drives the driving wheel 16 of the master 13 to rotate, and further drives the second chain of the master 13 to rotate, and drives one driving wheel 16 of the slave 14 to rotate through the connecting shaft 12, and the second chain of the slave 14 to rotate, and drives the transmission shaft connected with the other driving wheel 16 of the slave 14 to rotate

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. Non-setting adhesive labeller, including labeller machine case (1) that is provided with two transmission board (2), two transmission board (2) symmetry sets up and is provided with the transmission band between the two, its characterized in that: still be provided with on labeller machine case (1) and mark head mechanism (3) and press bottle mechanism (4), the bottle has been placed on the conveyer belt, the conveyer belt can drive the bottle and remove to the other end from its one end through the motor that sets up on one of them transmission board (2), just the bottle is through mark head mechanism (3) and press bottle mechanism (4), works as when the bottle is done and is removed the motion of its other end from the one end of conveyer belt, mark head mechanism (3) can contact and paste the label paper on the body with the body contact of placing the bottle on the conveyer belt, press bottle mechanism (4) can contact with the bottle top of placing the bottle on the conveyer belt.

2. The self-adhesive labeling machine according to claim 1, wherein: two the conveying plate (2) is provided with a correcting mechanism (5) and located on the left side of the header mechanism (3), two the conveying plate (2) is provided with an upper plate (21) and a lower plate (22), the correcting mechanism (5) comprises two transmission assemblies which are respectively arranged on the two upper plates (21), each transmission assembly comprises a rotating shaft (8) and two gears (9), the free end of the rotating shaft (8) penetrates through the lower plate (22), the two gears (9) are both located between the upper plate (21) and the lower plate (22), the rotating shaft (8) is provided with a driving wheel (7) and located between the upper plate (21) and the lower plate (22), a rack is sleeved between the driving wheel (7) and the two gears (9) and has the moving direction identical to the moving direction of the conveying belt, the two operating end faces of the racks correspond to each other, and the width between the two operating end faces is larger than the width of a bottle, be provided with main bevel gear (10) on axis of rotation (8), two be provided with connecting axle (12) between transmission board (2), the both ends of connecting axle (12) pass two transmission board (2) respectively and its both ends all are provided with from bevel gear (11) with main bevel gear (10) meshing, arbitrary one axis of rotation (8) are connected with drive arrangement, drive arrangement can drive axis of rotation (8), makes it drive main bevel gear (10) and rotate rather than the follow bevel gear (11) of meshing, is located bottle on the transmission band can follow two and takes place entering between the pivoted rack by axis of rotation (8) and mark mechanism (3).

3. The self-adhesive labeling machine according to claim 2, wherein: the driving device is a rotating motor, and an output shaft of the rotating motor is fixedly connected with the lower end of the rotating shaft (8).

4. The self-adhesive labelling machine according to claim 1 or 2, wherein: two still be provided with on transmission board (2) and lead bottle mechanism (6) and its right side that is located header mechanism (3), it is including setting up dull and stereotyped (61) and the rolling member in two transmission boards (2) respectively to lead bottle mechanism, the rolling member includes two roller bearings, two the cover is equipped with track (62) and dull and stereotyped (61) symmetry between the roller bearing, track (62) moving direction is the same with transmission band moving direction, the width between track (62) and dull and stereotyped (61) the two is greater than the width of bottle, one of them the roller bearing is connected with the output shaft of first motor, the bottle can be followed track (62) and dull and stereotyped (61) between the two and track (62) can drive the bottle rotation of placing on the transmission band.

5. The self-adhesive labeling machine according to claim 1, wherein: header mechanism (3) is including setting up mounting panel (31) at labeller machine case (1), the one end of keeping away from the conveyer belt on mounting panel (31) is rotated and is provided with unreeling wheel (32) that are used for placing the label, the one end that is close to the conveyer belt on mounting panel (31) is provided with peel off board (33), peel off board (33) and unreel and still be provided with wind-up wheel (34) between wheel (32), wind-up wheel (34) rotate under the second motor drives, drive the label conveying, the label is peeled off through peel off board (33), contact and attach on the body of label paper on the label and transmission band bottle on it, the label rolling after peel off board (33) is in wind-up wheel (34).

6. The self-adhesive labelling machine according to claim 1 or 5, wherein: the number of the header mechanisms (3) is two.

7. The self-adhesive labeling machine according to claim 1, wherein: bottle pressing mechanism (4) include transmission shaft (43) and two locating plates (41) that set up on labeller machine case (1) and be connected, two it is equipped with first chain (42) to set up on two runners and two runners between locating plate (41), first chain (42) moving direction is the same with transmission belt moving direction, the one end and one of them runner fixed connection of transmission shaft (43), the other end and the rotating component of transmission shaft (43) are connected, rotating component keeps away from the one end of pressing the bottle subassembly and the output shaft of third motor (44), first chain (42) can and the conveyer belt on the bottle top contact of bottle and the two can remove simultaneously.

8. The self-adhesive labeling machine according to claim 7, wherein: the rotating assembly comprises a hinged main part (13) and a hinged auxiliary part (14), the main part (13) and the auxiliary part (14) comprise two panels (15) and driving wheels (16) arranged between the two panels (15), two second chains are arranged between the driving wheels (16), one driving wheel (16) on the main part (13) is connected with an output shaft of a third motor (44), any one driving wheel (16) on the auxiliary part (14) on another driving wheel (16) and the auxiliary part (14) on the main part (13) is fixedly connected with the connecting shaft, and the other driving wheel (16) on the auxiliary part (14) is connected with the free end of a transmission shaft (43).