CN113731715B

CN113731715B - Coating cutting system of cardboard packing shell

Info

Publication number: CN113731715B
Application number: CN202111083285.6A
Authority: CN
Inventors: 刘子楷
Original assignee: Shaanxi Tianyoucheng Paper Co ltd
Current assignee: Shaanxi Tianyoucheng Paper Co ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2022-09-09
Anticipated expiration: 2041-09-16
Also published as: CN113731715A

Abstract

The invention belongs to the field of food packaging shell processing, and relates to a coating cutting system for a paperboard packaging shell, which comprises a box body, wherein a feeding opening is arranged at the front side of the box body, a feeding cavity is arranged in the box body, a paperboard feeding device is arranged in the feeding cavity and used for stably conveying raw material paperboards into a machine and quantitatively cutting the raw material paperboards, a constant-pressure coating device is arranged in the middle of the box body and used for uniformly coating a coating on the paperboards, and a face changing cavity is arranged at the rear part in the box body. When the food packaging shell paperboard is produced and processed, the paperboard is automatically and accurately cut in a quantitative mode, the paperboard is dried after being coated with the coating on one side and is automatically turned over, then the coating on the other side is coated, and the food packaging shell paperboard is cleaner, more sanitary and more efficient in the production and processing process due to the automatic structural arrangement.

Description

Coating cutting system of cardboard packing shell

Technical Field

The invention belongs to the field of food packaging shell processing, and particularly relates to a coating cutting system for a paperboard packaging shell.

Background

The food packaging shell is an article directly contacted with food, and currently, under the consideration of environmental protection, a large amount of paper food packaging is practically applied, but the food packaging shell has the problems of serious raw material waste, excessively long and complicated production line of the food packaging shell and the like in the production process, the food packaging shell is exposed on the production line for a long time by a longer production line, the workload of subsequent disinfection and sterilization treatment is increased, the phenomenon of wrinkling caused by the raised paperboard in the processing process is easy to occur, and the water-proof and oil-proof special coating on the food packaging shell has the problems of uneven thickness or unreasonable brushing and the like, the absolute qualification of the coated packaging shell can not be guaranteed, extra equipment is required for detection and treatment, the cost in the production process is increased, due to the soft and special nature of paper, an additional step of pressing and tensioning the paperboard is required in the processing process.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a coating cutting system for a paperboard packaging shell, which can automatically cut food packaging shells quantitatively and brush the packaging shells on two sides uniformly when the food packaging shells are processed.

The purpose of the invention can be realized by the following technical scheme: the utility model provides a coating cutting system of cardboard packing shell, the power distribution box comprises a box body, the box front side is equipped with the pan feeding opening, be equipped with the pay-off chamber in the box, the pay-off intracavity is equipped with cardboard material feeding unit, and cardboard material feeding unit is used for transporting into the machine steadily and the ration cuts with the raw materials cardboard, the middle part is equipped with constant voltage coating device in the box, and constant voltage coating device is used for applying paint evenly with a brush on the cardboard, the rear portion is equipped with the chamber of trading face in the box, trade the intracavity and be equipped with stoving turning device, stoving turning device is used for drying the cardboard and turn over the switching face, trade a chamber lower part and be equipped with upset driving medium opening, box middle part lower extreme is equipped with first support, box middle part lower extreme is located first support rear side position is equipped with the second support, first support with be equipped with upset transmission on the second support.

Preferably, cardboard material feeding unit is equipped with including rotating three synchronizing bar on the feeding chamber lateral wall, it respectively is equipped with the feedblock to rotate on the three synchronizing bar, it is equipped with the scraper shaft to rotate on the three synchronizing bar, the box is located feeding chamber front end and rear end respectively rotate and are equipped with two first gyro wheels, it is equipped with the cardboard to slide between two upper and lower first gyro wheels, the box is located feeding chamber back side slip is equipped with first driving lever, the box is located first driving lever back side slip is equipped with and cuts the gage plate.

Preferably, the box is located cut the ration board upside and rotate and be equipped with the second driving lever, the second driving lever with the box passes through first spring coupling, the box is located cut the rotation of ration board rear side and be equipped with spacing shifting block, spacing shifting block with the box passes through second spring coupling, the box is located the rotation of spacing shifting block rear side is equipped with the third driving lever, the box is located the rotation of third driving lever rear side is equipped with cuts the sword, it is fixed with the rack to cut the sword rear portion, the box is located cut the fixed solenoid controller that is equipped with of sword rear side, the solenoid controller front end is equipped with the motor, it is equipped with the gear to rotate on the motor.

Preferably, the constant-pressure coating device comprises two electric control pistons fixed at the rear part of the middle part in the box body, a storage cavity is arranged on the front side of each electric control piston in the box body, a coating pipe is fixedly arranged on the upper side of the front part of each storage cavity and connected with an external coating barrel, a coating wheel is rotationally arranged on the front side of each storage cavity, a stop lever is rotationally arranged on the front side of each coating wheel, a second roller is rotationally arranged at the lower end of the stop lever, and a photoelectric door is fixedly arranged on the upper side of the stop lever.

Preferably, the drying and turning device comprises an air blower fixed in the box body, a first air inlet is fixedly arranged at the upper part of the box body, the box body is located at the upper part of the front side of the dough changing cavity and is fixedly provided with a second air inlet, the box body is located at the lower side of the second air inlet and is fixedly provided with a first air outlet, the box body is located at the front side of the dough changing cavity and is provided with a drying cavity, the box body is located at the upper side of the drying cavity and is fixedly provided with a second air outlet, the box body is located at the lower side of the dough changing cavity and is rotatably provided with a turning plate, the lower end of the turning plate is rotatably provided with a push rod, and the push rod is connected with a turning transmission device.

Preferably, the turnover transmission device comprises two first supports fixed at the lower end of the middle of the box body, driving rollers are arranged on the upper portions of the two first supports in a rotating mode, driven wheels are arranged on the lower portions of the two first supports in a rotating mode, first belt wheels are fixedly arranged on the driven wheels, the box body is located on the rear side of the first supports, two second supports are fixedly arranged on the rear side of the first supports, second belt wheels are arranged on the two second supports in a rotating mode, rotating wheels are fixedly arranged on the two second belt wheels, push rods are arranged between the two rotating wheels in a rotating mode, and belts are arranged between the second belt wheels and the first supports.

When needs processing food package shell cardboard, open equipment, add the cardboard from box front end opening, the roughness that the cardboard was guaranteed to first gyro wheel pushing down the cardboard, synchronizing bar anticlockwise rotation, scrape the synchronism that the knife shaft followed the synchronizing bar rotation restriction synchronizing bar motion, the feedblock moves along clockwise under the synchronizing bar effect, the feedblock pushes down the cardboard at the lower point and loosens the cardboard to the upward movement after the rear end motion, synchronizing bar anticlockwise rotation in-process drives first driving lever reciprocating motion.

The first deflector rod clamps a gap of the cutting quantitative plate in the upward movement process, the cutting quantitative plate moves upwards, the gap at the rear side of the cutting quantitative plate is clamped at a limited position by a limiting deflector rod, when the first deflector rod is clamped at the lowest bayonet at the front side of the cutting quantitative plate, the cutting quantitative plate moves to the highest point to jack up a second deflector rod, the second deflector rod rotates, a cutting knife falls down to cut a paperboard, a boss at the front side of the cutting knife presses a third deflector rod, the third deflector rod rotates clockwise to stir the limiting deflector rod to rotate anticlockwise, a limiting deflector rod claw is separated from a groove at the rear side of the cutting quantitative plate, the cutting quantitative plate falls down to reset, the second deflector rod rotates anticlockwise to the front end to press the cutting quantitative plate under the action of a first spring, an electromagnetic controller starts a pushing motor, the motor starts a driving gear to rotate, the gear is meshed with a gear at the rear side of the cutting knife to drive the cutting knife to return to the highest position, a boss at the front side of the cutting knife leaves from the third deflector rod, the limiting shifting block rotates clockwise under the action of the second spring, the limiting shifting block enables the third shifting rod to rotate anticlockwise to the original position, and the single cutting action is completed.

The cardboard that follow-up cardboard that gets into promotes to cut the completion continues to move forward, the cardboard touches the second gyro wheel and drives pin anticlockwise rotation, pin upper portion baffle leaves the photogate, the photogate is opened and is made automatically controlled piston promote forward at the uniform velocity, the coating in the storage intracavity is evenly seen off, the cardboard that advances at the uniform velocity drives the coating wheel and rolls the even coating of coating on the cardboard upside with coating, the cardboard is accomplished through applying paint with a brush after through, the pin resets, the photogate is closed, automatically controlled piston resets, the coating pipe draws coating from external coating bucket and gets into the storage cavity for subsequent use.

The cardboard is dried by the second air outlet at the stoving intracavity, simultaneously gyro wheel driving roller transports the cardboard at the uniform velocity clockwise rotation and enters into the chamber of changing a plane, the boss card of driving roller both sides drives from driving wheel and first band pulley anticlockwise rotation after going into from the driving wheel recess, first band pulley passes through the belt and drives second band pulley and rotate wheel anticlockwise rotation, it makes the push rod promote to turn over the board and rotate in changing a plane intracavity to rotate to the board, when turning over the board and rotating to the higher point, second air intake is inhaled the cardboard upper end, first air outlet blows the cardboard lower extreme and makes the cardboard turn over, promote to remove to the box rear end by the cardboard of follow-up entering, the constant voltage coating device at box rear portion applies paint to the cardboard another side, the cardboard is sent out the box afterwards.

Compared with the prior art, the coating cutting system of the paperboard packaging shell has the following advantages:

1. food packaging shell raw material paper boards are automatically and quantitatively cut through a mechanical structure, the waste rate of the food packaging shell raw material paper boards is reduced, and the cost requirement on raw materials is lowered.

2. The coating is uniformly coated, so that the influence of uncontrollable forces such as gravity on the coating process is reduced, the coating can be uniformly coated on the packaging shell in a controllable manner, and the phenomenon of repeated coating or ineffective coating is avoided.

3. Utilize hot-blast automatic drying and upset, realized the function of drying and upset through simple mechanical structure, removed artificial interference from, improved degree of automation, reduced the production personnel selection cost.

Drawings

FIG. 1 is a sectional view of a paint cutting system for paperboard packaging.

Fig. 2 is an enlarged sectional view taken at a in fig. 1.

Fig. 3 is an enlarged sectional view at B in fig. 1.

Fig. 4 is a top cross-sectional view of fig. 3.

Fig. 5 is an enlarged view of the structure at C in fig. 2.

Fig. 6 is a sectional view taken along line D-D of fig. 1.

In the figure, 10, a box body; 11. a feeding cavity; 12. a feeding block; 13. a synchronization lever; 14. a scraper shaft; 15. a paperboard; 16. a first roller; 17. a first shift lever; 18. a first air inlet; 19. a blower; 20. an air inlet channel; 21. a second air inlet; 22. a first air outlet; 23. a face changing cavity; 24. a second air outlet; 25. a drying cavity; 26. turning a plate; 27. a push rod; 28. a driving roller; 29. a first bracket; 30. a first pulley; 31. a driven wheel; 32. a belt; 33. a rotating wheel; 34. a second bracket; 35. a second deflector rod; 36. cutting a quantitative plate; 37. a second pulley; 38. a limit shifting block; 39. cutting a knife; 40. a first spring; 41. a rack; 42. a second spring; 43. a third deflector rod; 44. a gear; 45. a motor; 46. an electromagnetic controller; 47. a photogate; 48. A stop lever; 49. a paint wheel; 50. a second roller; 51. an electrically controlled piston; 52. a coating tube; 53. a material storage cavity.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, a paint cutting system for a paperboard packaging shell, which comprises a box body 10, a feeding opening is arranged on the front side of the box body 10, a feeding cavity 11 is arranged in the box body 10, a paperboard feeding device is arranged in the feeding cavity 11, the paperboard feeding device is used for stably conveying raw paperboards into a machine and quantitatively cutting the raw paperboards, a constant-pressure coating device is arranged in the middle of the box body 10, the constant-pressure coating device is used for uniformly coating paint on the paperboards, a face changing cavity 23 is arranged at the rear part of the box body 10, a drying and turning device is arranged in the face changing cavity 23 and used for drying and turning over the paperboards, a turning transmission part opening is arranged at the lower part of the face changing cavity 23, a first support 29 is arranged at the lower end of the middle part of the box body 10, a second support 34 is arranged at the rear side of the first support 29 at the lower end of the middle part of the box body 10, and a turning transmission device is arranged on the first support 29 and the second support 34.

As shown in fig. 1 and 2, the cardboard feeding device comprises three synchronizing rods 13 rotatably arranged on the side wall of a feeding cavity 11, a feeding block 12 is respectively arranged on each of the three synchronizing rods 13 in a rotating manner, a scraper shaft 14 is arranged on each of the three synchronizing rods 13 in a rotating manner, two first rollers 16 are respectively arranged at the front end and the rear end of the feeding cavity 11 of a box body 10 in a rotating manner, a cardboard 15 is arranged between the upper first roller 16 and the lower first roller 16 in a sliding manner, a first deflector rod 17 is arranged on the box body 10 in a sliding manner at the rear end of the feeding cavity 11, and a cutting and sizing plate 36 is arranged on the box body 10 in a sliding manner at the rear end of the first deflector rod 17.

As shown in fig. 2, 3 and 4, a second shift lever 35 is rotatably disposed on the upper side of the cutting gauge plate 36 of the box 10, the second shift lever 35 is connected to the box 10 through a first spring 40, a limiting shift block 38 is rotatably disposed on the rear side of the cutting gauge plate 36 of the box 10, the limiting shift block 38 is connected to the box 10 through a second spring 42, a third shift lever 43 is rotatably disposed on the rear side of the limiting shift block 38 of the box 10, a cutting knife 39 is rotatably disposed on the rear side of the third shift lever 43 of the box 10, a rack 41 is fixedly disposed on the rear portion of the cutting knife 39, an electromagnetic controller 46 is fixedly disposed on the rear side of the cutting knife 39 of the box 10, a motor 45 is disposed at the front end of the electromagnetic controller 46, and a gear 44 is rotatably disposed on the motor 45.

As shown in fig. 1 and 5, the constant pressure coating device includes two electric control pistons 51 fixed at the rear and middle portions in the box 10, a material storage chamber 53 is provided in the box 10 at the front side of the electric control piston 51, a coating tube 52 is fixedly provided at the upper side of the front portion of the material storage chamber 53 in the box 10, the coating tube 52 is connected to an external coating bucket, a coating wheel 49 is rotatably provided at the front side of the material storage chamber 53 in the box 10, a stop lever 48 is rotatably provided at the front side of the coating wheel 49 in the box 10, a second roller 50 is rotatably provided at the lower end of the stop lever 48, and a photoelectric door 47 is fixedly provided at the upper side of the stop lever 48 in the box 10.

As shown in fig. 1, the drying and turning device includes an air blower 19 fixed in a box 10, a first air inlet 18 is fixedly arranged at the upper part of the box 10, a second air inlet 21 is fixedly arranged at the upper part of the front side of a face-changing chamber 23 of the box 10, a first air outlet 22 is fixedly arranged at the lower side of the second air inlet 21 of the box 10, a drying chamber 25 is arranged at the front side of the face-changing chamber 23 of the box 10, a second air outlet 24 is fixedly arranged at the upper side of the drying chamber 25 of the box 10, a turning plate 26 is rotatably arranged at the lower side of the face-changing chamber 23 of the box 10, a push rod 27 is rotatably arranged at the lower end of the turning plate 26, and the push rod 27 is connected with a turning transmission device.

As shown in fig. 1 and 6, the turnover transmission device includes two first brackets 29 fixed at the lower end of the middle portion of the box 10, driving rollers 28 are respectively rotatably provided at the upper portions of the two first brackets 29, driven rollers 31 are respectively rotatably provided at the lower portions of the two first brackets 29, first pulleys 30 are fixedly provided at the driven rollers 31, two second brackets 34 are fixedly provided at the rear side of the first bracket 29 of the box 10, second pulleys 37 are respectively rotatably provided at the two second brackets 34, rotating wheels 33 are respectively fixedly provided at the two second pulleys 37, push rods 27 are rotatably provided between the two rotating wheels 33, and belts 32 are provided between the second pulleys 37 and the first brackets 29.

When food package shell cardboard needs to be processed, open equipment, add cardboard 15 from the front end opening of box 10, cardboard 15's roughness is guaranteed to first gyro wheel 16 push down cardboard 15, synchronizing bar 13 anticlockwise rotation, scrape the synchronism that synchronous bar 13 rotation restriction synchronizing bar 13 moved along with synchronizing bar 14, feedblock 12 moves along clockwise under synchronizing bar 13 effect, feedblock 12 holds cardboard 15 at the low point and moves backward after the rear end motion upward unclamp cardboard 15, synchronizing bar 13 anticlockwise rotation in-process drives first driving lever 17 reciprocating motion.

The first shift lever 17 blocks the gap of the cutting fixed plate 36 in the upward movement process, the cutting fixed plate 36 moves upward, the gap at the rear side of the cutting fixed plate 36 is blocked at the limiting position by the limiting shift block 38, when the first shift lever 17 is blocked at the lowest bayonet position at the front side of the cutting fixed plate 36, the cutting fixed plate 36 moves to the highest point to jack up the second shift lever 35, the second shift lever 35 rotates, the cutting knife 39 drops down the cutting paperboard 15, the boss at the front side of the cutting knife 39 presses the third shift lever 43, the third shift lever 43 rotates clockwise to shift the limiting shift block 38 to rotate anticlockwise, the hook claw of the limiting shift block 38 is separated from the groove at the rear side of the cutting fixed plate 36, the cutting fixed plate 36 drops down to reset, the second shift lever 35 rotates anticlockwise to the front end to press the cutting fixed plate 36 under the action of the first spring 40, the electromagnetic controller 46 starts the push-out motor 45, the motor 45 starts the driving gear 44 to rotate, the gear 44 is meshed with the rack 41 at the rear side of the cutting knife 39 to drive the cutting knife 39 to return to the position, the boss at the front side of the cutting knife 39 leaves from the third shift lever 43, the limit shift block 38 rotates clockwise under the action of the second spring 42, the limit shift block 38 enables the third shift lever 43 to rotate anticlockwise to the original position, and the single cutting action is finished.

The subsequent paperboard which enters pushes the cut paperboard to move forward continuously, the paperboard touches a second roller 50 to drive a stop lever 48 to rotate anticlockwise, a baffle on the upper portion of the stop lever 48 leaves a photoelectric door 47, the photoelectric door 47 is opened to enable an electric control piston 51 to push forward at a constant speed, the paint in a storage cavity 53 is uniformly sent out, the paperboard which advances at a constant speed drives a paint wheel 49 to roll to uniformly paint the paint on the upper side of the paperboard, the paperboard is painted after passing through the rear painting, the stop lever 48 is reset, the photoelectric door 47 is closed, the electric control piston 51 is reset, and a paint pipe 52 extracts the paint from an external paint bucket to enter the storage cavity 53 for later use.

The cardboard is dried by second air outlet 24 in stoving chamber 25, simultaneously gyro wheel driving roller 28 at the uniform velocity clockwise rotates transports the cardboard and enters trades a chamber 23, the boss card of driving roller 28 both sides drives driven wheel 31 and first band pulley 30 anticlockwise rotation after driven wheel 31 recess, first band pulley 30 drives second band pulley 37 and rotates wheel 33 anticlockwise rotation through belt 32, it makes push rod 27 promote to turn over board 26 and change a chamber 23 internal rotation to rotate to turn over board 26, when turning over board 26 rotates to the higher point, second air intake 21 holds the cardboard upper end, first air outlet 22 blows the cardboard lower extreme and makes the cardboard turn over, the cardboard that is promoted by subsequent entering removes to box 10 rear end, the constant voltage coating device at box 10 rear portion brushes the coating to the cardboard another side, the cardboard is sent out box 10 afterwards.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The coating cutting system of the paperboard packaging shell comprises a box body (10) and is characterized in that a feeding opening is arranged on the front side of the box body (10), a feeding cavity (11) is formed in the box body (10), a paperboard feeding device is arranged in the feeding cavity (11), the paperboard feeding device is used for stably conveying raw paperboards into a machine and quantitatively cutting the raw paperboards, a constant-pressure coating device is arranged at the middle part in the box body (10) and used for uniformly coating the raw paperboards on the paperboards, a face changing cavity (23) is formed in the rear part of the box body (10), a drying and overturning device is arranged in the face changing cavity (23) and used for drying the paperboards and overturning faces, an overturning transmission part opening is formed in the lower part of the face changing cavity (23), a first support (29) is arranged at the lower end of the middle part of the box body (10), a second support (34) is arranged at the lower end of the middle part of the box body (10) and positioned behind the first support (29), the first bracket (29) and the second bracket (34) are provided with turnover transmission devices;

the constant-pressure coating device comprises two electric control pistons (51) fixed at the rear part of the middle part in the box body (10), a storage cavity (53) is arranged on the front side of the electric control pistons (51) in the box body (10), a coating pipe (52) is fixedly arranged on the upper side of the front part of the storage cavity (53) of the box body (10), the coating pipe (52) is connected with an external coating bucket, a coating wheel (49) is rotatably arranged on the front side of the storage cavity (53) of the box body (10), a stop lever (48) is rotatably arranged on the front side of the coating wheel (49) of the box body (10), a second roller (50) is rotatably arranged at the lower end of the stop lever (48), and a photoelectric door (47) is fixedly arranged on the upper side of the stop lever (48) of the box body (10);

the drying and turning device comprises an air blower (19) fixed in the box body (10), a first air inlet (18) is fixedly arranged at the upper part of the box body (10) positioned at the upper part of the front side of the dough changing cavity (23), a second air inlet (21) is fixedly arranged at the upper part of the front side of the dough changing cavity (23), a first air outlet (22) is fixedly arranged at the lower side of the second air inlet (21) of the box body (10), a drying cavity (25) is arranged at the front side of the dough changing cavity (23) of the box body (10), a second air outlet (24) is fixedly arranged at the upper side of the drying cavity (25) of the box body (10), a turning plate (26) is rotatably arranged at the lower side of the dough changing cavity (23) of the box body (10), a push rod (27) is rotatably arranged at the lower end of the turning plate (26), and the push rod (27) is connected with a turning transmission device;

upset transmission is including fixing two first supports (29) of box (10) middle part lower extreme, two first support (29) upper portions respectively rotate and are equipped with driving roll (28), two first support (29) lower parts respectively rotate and are equipped with from driving wheel (31), from fixed first band pulley (30) that are equipped with of driving wheel (31), box (10) are located fixed two second supports (34) that are equipped with in first support (29) rear side, respectively rotate on two second supports (34) and are equipped with second band pulley (37), respectively fixedly on two second band pulleys (37) be equipped with and rotate wheel (33), it is equipped with push rod (27) to rotate between two commentaries on classics wheel (33), second band pulley (37) with be equipped with belt (32) between first support (29).

2. A paint cutting system for paperboard packaging shells as recited in claim 1, further comprising: cardboard material feeding unit is equipped with including rotating three synchronizing bar (13) on feeding chamber (11) lateral wall, it respectively is equipped with feedblock (12) to rotate on three synchronizing bar (13), it is equipped with scraper shaft (14) to rotate on three synchronizing bar (13), box (10) are located feeding chamber (11) front end and rear end respectively rotate and are equipped with two first gyro wheels (16), two from top to bottom slide between first gyro wheel (16) and are equipped with cardboard (15), box (10) are located feeding chamber (11) back side slides and is equipped with first driving lever (17), box (10) are located slide and be equipped with behind first driving lever (17) and cut graduated plate (36).

3. A paint cutting system for paperboard packaging shells as recited in claim 2, further comprising: the box body (10) is located cut the fixed plate (36) upside and rotate and be equipped with second driving lever (35), second driving lever (35) with box body (10) is connected through first spring (40), box body (10) is located cut the fixed plate (36) rear side and rotate and be equipped with spacing shifting block (38), spacing shifting block (38) with box body (10) are connected through second spring (42), box body (10) is located spacing shifting block (38) rear side rotates and is equipped with third driving lever (43), box body (10) is located third driving lever (43) rear side and moves and is equipped with cuts sword (39), it is fixed with rack (41) to cut sword (39) rear portion, box body (10) is located cut sword (39) rear side and is fixed and is equipped with electromagnetic controller (46), electromagnetic controller (46) front end is equipped with motor (45), and a gear (44) is rotatably arranged on the motor (45).