CN214421902U

CN214421902U - Winding device of label printing machine

Info

Publication number: CN214421902U
Application number: CN202120271147.XU
Authority: CN
Inventors: 张闯
Original assignee: Qingdao Chaohu Packaging Co ltd
Current assignee: Qingdao Chaohu Packaging Co ltd
Priority date: 2021-01-30
Filing date: 2021-01-30
Publication date: 2021-10-19
Anticipated expiration: 2031-01-30

Abstract

The utility model discloses a rolling device of a label printing machine, which relates to the technical field of label printing equipment and comprises a base, wherein a supporting plate is fixedly arranged on the upper surface of the base, an air expansion roller and a pressing roller are rotationally arranged on one side of the supporting plate, the air expansion roller is positioned under the pressing roller, and a paper tube is sleeved on the periphery of the air expansion roller; the pressing roller both ends all are provided with spacing subassembly, spacing subassembly includes the holding ring that slides the setting on the pressing roller axis direction, a plurality of constant head tanks have been seted up to the holding ring inner wall, equal elasticity is provided with the locating piece in a plurality of constant head tanks, one side of holding ring has set firmly the spacing ring, the annular groove has been seted up to one side that the spacing ring was kept away from to the holding ring, ring channel thread fit has the screw thread ring, the one end that the pressing roller was kept away from to the locating piece is provided with the circular arc inclined plane, the one end that the screw thread ring stretched into in the constant head tank agrees with the circular arc inclined plane. The position of the limiting ring is adjusted by adjusting the position of the positioning ring, and the limiting ring plays a limiting role in limiting the label and prevents the label from deviating.

Description

Winding device of label printing machine

Technical Field

The utility model relates to a label printing equipment technical field especially relates to a label printing machine's coiling mechanism.

Background

The self-adhesive label is a self-adhesive label printed by taking paper, a film and other special materials as fabrics, coating adhesive on the back and taking silicon-coated protective paper as base paper. After the self-adhesive label is printed and dried, the self-adhesive label needs to be collected into a label roll, and an air expansion roller is usually adopted to rotate and drive a paper tube to rotate, so that the label is wound on the paper tube.

Aiming at the rolling problem of a non-setting adhesive label printing machine, Chinese patent with patent publication number CN111847128A proposes a label paper production device, which comprises an unreeling device, a printing and glazing device and a reeling device, wherein the reeling device comprises an air drying mechanism and a reeling mechanism, the reeling mechanism comprises a rack and a reel rotatably mounted on the rack, two ends of the reel are respectively provided with a mounting disc and a connecting disc, the connecting discs are rotatably mounted on the rack, an air bag is arranged and mounted in the reel in a hollow manner, a plurality of movable rods communicated with the outside are movably mounted in the reel, one end of each movable rod positioned in the reel is connected with a bottom plate, one end of each movable rod positioned outside the reel is connected with an arc plate, a connecting spring is sleeved outside each movable rod, and two ends of each connecting spring are respectively connected with the arc plate and the reel; frame one side is provided with the air pump, and the air pump is connected with the pipeline of ventilating, installs rotary joint on the frame, and rotary joint one end and pipeline of ventilating are connected, and the gasbag tip passes the connection pad and the rotary joint other end is connected.

Among the above-mentioned technical scheme, the label takes place the skew easily in the rolling process, leads to the edge of label book uneven and easily the fold appears, influences the rolling quality of non-setting adhesive label.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a labelling machine's coiling mechanism has that the coiling in-process label takes place the skew and makes the winding inseparabler effect of label book.

The utility model discloses a can realize through following technical scheme:

a winding device of a label printing machine comprises a base, wherein a supporting plate is fixedly arranged on the upper surface of the base, an air expansion roller and a pressing roller are rotatably arranged on one side of the supporting plate, the air expansion roller is positioned right below the pressing roller, a plurality of movable blocks are embedded on the periphery of the surface of the air expansion roller, and a paper tube is sleeved on the periphery of the air expansion roller; the two ends of the pressing roller are respectively provided with a limiting assembly, the limiting assembly comprises a positioning ring which is arranged in a sliding manner along the axial direction of the pressing roller, the inner wall of the positioning ring is provided with a plurality of positioning grooves, positioning blocks are elastically arranged in the plurality of positioning grooves, one side of the positioning ring is fixedly provided with a limiting ring, one side of the positioning ring, which is far away from the limiting ring, is provided with an annular groove, a threaded ring is matched with the annular groove in a threaded manner, one end, which is far away from the pressing roller, of the positioning block is provided with an arc inclined surface, and one end, which extends into the positioning grooves, of the threaded ring is matched with the arc inclined surface; and a pushing block is arranged on the side surface of the supporting plate where the air expansion roller is located in a lifting manner.

Through adopting the above technical scheme, the staff overlaps the paper tube on the inflatable roller in advance, the slip retaining ring adjusts its position, the holding ring drives the spacing ring and removes, when two spacing rings are about to with paper tube edge butt, rotatory screw ring, the screw ring rotates the in-process and compresses tightly the movable block gradually, the outer wall of movable block top tight pinch roller, the location to the spacing ring has been realized, carry out the rolling in-process at the inflatable roller to the label, the spacing ring can play limiting displacement to the label, avoid the rolling in-process, the skew takes place for the label, label rolling quality has been ensured.

Further setting the following steps: a plurality of mounting grooves have been seted up along its axis direction to compressing roller week side, the locating piece stretch into to in the mounting groove, be provided with spacing spring in the constant head tank just spacing spring housing is established the outside of locating piece.

Through adopting above-mentioned technical scheme, the in-process of staff locking screw ring, screw ring promote the locating piece gradually, and the movable block compresses spacing spring and the tight mounting groove diapire in top, and when the staff loosened the screw ring, the movable block rolled back under spacing spring's elasticity effect, realized the quick fastening of holding ring and relaxed, and the staff of being convenient for adjusts the position of holding ring.

Further setting the following steps: the adjustable roller is characterized in that an adjusting groove is formed in the supporting plate, an adjusting block is arranged in the adjusting groove in a sliding mode, the pressing roller is rotatably arranged on the adjusting block, an adjusting spring is fixedly arranged in the adjusting groove, one end of the adjusting spring is fixedly connected with the inner wall of the adjusting groove, and the other end of the adjusting spring is fixedly connected with the adjusting block.

Through adopting above-mentioned technical scheme, along with the label book on the inflatable roller thickens gradually, the label book promotes the pinch roller gradually, and the pinch roller drives the regulating block and compresses tightly regulating spring gradually, and the pinch roller compresses tightly the label book under regulating spring's spring action for the label is rolled up winding inseparabler, and the label is rolled up inseparabler, is difficult to scatter more, and the position is difficult to the skew more.

Further setting the following steps: and a circular inclined plane is arranged on the edge of the limiting ring far away from the compression roller.

Through adopting above-mentioned technical scheme, circular inclined plane plays the guide effect at the label rolling in-process, and the guide label enters into between two spacing rings.

Further setting the following steps: the air expansion roller supporting device is characterized in that a flattening roller is rotatably arranged on the side face, where the air expansion roller is located, of the supporting plate, an adjusting groove is formed in the supporting plate, an adjusting block is slidably arranged in the adjusting groove, a supporting roller is rotatably arranged on one side of the adjusting block, and the supporting roller is located right below the flattening roller.

Through adopting above-mentioned technical scheme, nip rolls and backing roll press from both sides tight label for the steady winding of label is avoided the label to take place to rock when the rolling on the inflatable roller, and can flatten the label in advance before the rolling, has avoided the fold to appear in the label rolling in-process.

Further setting the following steps: the adjusting block is provided with a screw rod in a penetrating mode through threads, a steering gear is fixedly arranged on one side of the base towards the screw rod, a driving gear is arranged in the supporting plate in a rotating mode, the steering gear is meshed with the driving gear, a driving motor is fixedly arranged on one side of the supporting plate, and a driving end of the driving motor is in transmission connection with the driving gear.

Through adopting above-mentioned technical scheme, driving motor starts and drives drive gear and rotates, and drive gear drives steering gear and rotates, and steering gear drives the lead screw and rotates, and the lead screw drives the regulating block and slides in supporting the version, realizes the adjustment to the backing roll height, and then realizes adjusting the clamp force to the label between nip roll and the backing roll.

Further setting the following steps: the supporting plate is provided with a pushing block in a lifting mode on the side face where the air expansion roller is located, a limiting groove is formed in the side face where the air expansion roller is located on the supporting plate, and the pushing block is arranged on the limiting groove in a sliding mode.

Through adopting above-mentioned technical scheme, the cooperation that slides of spacing groove and stopper realizes that the ejector pad slides along the spacing groove.

Further setting the following steps: the limiting groove is internally and rotatably provided with a screw, the screw thread penetrates through the push block, the upper surface of the supporting plate is fixedly provided with a servo motor, and the screw is in transmission connection with the driving end of the servo motor.

Through adopting above-mentioned technical scheme, when the label rolling finishes, servo motor starts and drives the screw rod and rotates, and the screw rod drives ejector pad rebound, and the in-process that the ejector pad shifts up pushes up the bottom of pinch roller pivot to drive pinch roller rebound, remove to the roof of spacing groove until the ejector pad, make the pinch roller keep away from the physiosis roller, make things convenient for the staff to take off the label book.

To sum up, the utility model discloses a beneficial technological effect does:

(1) through rotating the threaded ring for the locating piece loosens the centre gripping to the pinch roller, later removes the holding ring and realizes adjusting the position of spacing ring, and the spacing ring has played limiting displacement to the label, and at the in-process to the label rolling, the label is in between two spacing rings all the time, prevents that the label from taking place the skew.

(2) In the air inflation roller rolling process, the compressing roller compresses tightly the label, and along with the thickening gradually of the label on the air inflation roller, the compressing roller compresses the adjusting spring gradually, and the compressing roller realizes continuously compressing tightly the label under adjusting spring's elastic force effect, and the label winding is inseparabler, is difficult to scatter more.

(3) When the label rolling finishes, take out the gas in the gas expansion roller for the movable block withdrawal and relax the top tight to the paper tube, later the ejector pad rises and lifts the pressure roller, makes things convenient for the staff to take off the label book.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a rear view of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is a partially enlarged view of portion B of fig. 3.

Reference numerals: 1. a base; 2. a support plate; 3. an air expansion roller; 4. a movable block; 5. a pressure roller; 6. a positioning ring; 7. positioning a groove; 8. positioning blocks; 9. a limiting ring; 10. an annular groove; 11. a threaded ring; 12. a circular arc inclined plane; 13. a push block; 15. mounting grooves; 16. a limiting spring; 17. an adjustment groove; 18. adjusting the spring; 19. a circular bevel; 24. flattening rollers; 25. an adjustment groove; 26. an adjusting block; 27. a screw rod; 28. a steering gear; 29. a drive gear; 30. a drive motor; 32. a screw; 33. a servo motor; 34. a stepping motor; 35. a support roller; 37. a pulley; 38. an adjusting block; 39. adjusting the motor; 40. a paper tube; 41. a limiting groove.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1, for the utility model discloses a label printing machine's coiling mechanism, including base 1, base 1 upper surface has set firmly backup pad 2, and one side of backup pad 2 is rotated and is provided with inflatable roller 3 and pinch roller 5, and pinch roller 5 and inflatable roller 3 are parallel to each other and set up from top to bottom. With reference to fig. 3, one side of the supporting plate 2, which is far away from the air expansion roller 3, is fixedly provided with a stepping motor 34, a driving end of the stepping motor 34 is in transmission connection with the air expansion roller 3 through a belt wheel 37, a plurality of movable blocks 4 are embedded on the surface of the air expansion roller 3, a paper tube 40 is sleeved on the periphery of the air expansion roller 3, and the movable blocks 4 abut against the inner wall of the paper tube 40. The staff overlaps paper tube 40 on inflatable roller 3 in advance, thereby its inside movable block 4 can the butt realize the location of paper tube 40 at paper tube 40 inner wall after inflatable roller 3 starts, glues the discharge end of label on paper tube 40 again, when rolling up the label, step motor 34 starts and drives inflatable roller 3 and rotate, and inflatable roller 3 rotates the in-process, and the label twines gradually on paper tube 40, realizes the collection lapping to the label.

Referring to fig. 2, an adjusting groove 17 is vertically formed in the side face, where the inflatable roller 3 is located, of the supporting plate 2, an adjusting block 26 is arranged in the adjusting groove 17 in a sliding mode, one side, far away from the supporting plate 2, of the adjusting block 26 is rotatably provided with a pressing roller 5, an adjusting spring 18 is fixedly arranged in the adjusting groove 17, one end of the adjusting spring 18 is fixedly connected with one side face, far away from the inflatable roller 3, in the adjusting groove 17, and the other end of the adjusting spring is fixedly connected with the adjusting block 26. With reference to fig. 1, the label is gradually wound on the paper tube 40 to form a roll along with the rotation of the air expansion roller 3 in the winding process, the label roll on the air expansion roller 3 gradually becomes thick, the label roll gradually pushes the compression roller 5, the compression roller 5 drives the adjusting block 26 to gradually compress the adjusting spring 18, and the compression roller 5 compresses the label roll under the elastic action of the adjusting spring 18, so that the label roll is wound more tightly and is not easy to loose and shake. And an adjusting motor 39 is fixedly arranged on one side of the supporting plate 2, which is far away from the pressing roller 5, and the driving end of the adjusting motor 39 is in transmission connection with the pressing roller 5 through a coupler. The adjusting motor 39 rotates and drives the pressing roller 5 to rotate, the rotating direction of the pressing roller 5 is opposite to that of the air expansion roller 3, so that the label can be tightly wound on the paper tube 40, the tighter the winding is, the less the label is easy to scatter, and the less the position is easy to deviate.

Referring to fig. 4, 5 both ends of pinch roller all are provided with spacing subassembly, and spacing subassembly includes the holding ring 6 that slides the setting on the 5 axis directions of pinch roller, and three constant head tank 7 has been seted up to 6 inner walls of holding ring, and equal elasticity is provided with locating piece 8 in the three constant head tank 7, is provided with spacing spring 16 and spacing spring 16 cover in the constant head tank 7 and establishes in the outside of locating piece 8, has seted up three mounting groove 15 on 5 week sides of pinch roller along its axis direction, and 8 one end of locating piece stretch into to the mounting groove 15 in. One side of holding ring 6 has set firmly spacing ring 9, and two spacing rings 9 on the pinch roller 5 set up in opposite directions, and ring channel 10 has been seted up to the one side that holding ring 6 kept away from spacing ring 9, and ring channel 10 internal thread fit has threaded ring 11, and the one end that pinch roller 5 was kept away from to locating piece 8 is provided with circular arc inclined plane 12, and threaded ring 11 stretches into the one end in constant head tank 7 and agrees with circular arc inclined plane 12.

The realization of slip holding ring 6 is to the position adjustment of spacing ring 9, when two spacing rings 9 are about to with the 40 butts in paper tube edge, the rotatory screw ring 11 of staff, screw ring 11 rotates the in-process and compresses tightly movable block 4 gradually, the diapire of movable block 4 compression limiting spring 16 and the tight mounting groove 15 in top, the location to spacing ring 9 has been realized, when needs are adjusted the position of spacing ring 9, when the staff loosens screw ring 11, movable block 4 rolls back under limiting spring 16's spring action, realize that the quick clamp of holding ring 6 presss from both sides tightly and relaxs, the staff of being convenient for adjusts the position of holding ring 6. Spacing ring 9 has played the limiting displacement to the label at the in-process of rolling label, and the label is located between two spacing rings 9 all the time, avoids the rolling in-process, and the label takes place the skew.

The edge of the limiting ring 9 far away from the pressing roller 5 is provided with a circular inclined plane 19. The circular bevel 19 plays a guiding role in the label rolling process and guides the label to enter between the two limiting rings 9.

Referring to fig. 1 and 4, a limit groove 41 is vertically formed in the side face of the support plate 2 where the air expansion roller 3 is located, a push block 13 is slidably arranged in the limit groove 41, and the push block 13 is of a 7-shaped structure. The screw rod 32 is rotatably arranged in the limiting groove 41, the pushing block 13 is penetrated through the screw thread of the screw rod 32, one end of the pushing block 13 extends to the position under the adjusting block 26 and is abutted to the bottom surface of the adjusting block 26, the servo motor 33 is fixedly arranged on the upper surface of the supporting plate 2, and one end of the screw rod 32 is in transmission connection with the driving end of the servo motor 33. When the label rolling is finished, the servo motor 33 is started and drives the screw rod 32 to rotate, the screw rod 32 drives the pushing block 13 to move upwards, the bottom wall of the adjusting block 26 is pushed in the process that the pushing block 13 moves upwards, the adjusting block 26 is driven to move upwards, and the pushing block 13 moves to the top wall of the limiting groove 41 until the pressing roller 5 is far away from the air expansion roller 3, and then a worker can take down the label roll.

Referring to fig. 1, the supporting plate 2 is provided with a flattening roller 24 in one side of the inflatable roller 3 in a rotating manner, the flattening roller 24 and the inflatable roller 3 are arranged in parallel, a supporting roller 35 is arranged under the flattening roller 24 in a lifting manner, the flattening roller 24 and the supporting roller 25 are arranged in parallel, an adjusting groove 17 is vertically formed in the supporting plate 2, an adjusting block 38 is arranged in the adjusting groove 17 in a sliding manner, and the supporting roller 35 is arranged on one side, far away from the supporting plate 2, of the adjusting block 38 in a rotating manner. The label can be pressed from both sides when nip roll 24 and backing roll 35 butt, and before the label winding is in inflatable roller 3, can realize the steady transport to the label, avoid the label to take place to rock when the rolling, and can flatten the label in advance before the rolling, avoided the fold to appear in the label rolling in-process. The adjusting block 38 is threaded with a screw rod 27, a steering gear 28 is fixedly arranged on one side of the screw rod 27 facing the base 1, a driving gear 29 is rotatably arranged in the supporting plate 2, the steering gear 28 and the driving gear 29 are both bevel gears and are meshed with each other, a driving motor 30 is fixedly arranged on one side of the supporting plate 2, and a driving end of the driving motor 30 is in transmission connection with the driving gear 29. The driving motor 30 is started and drives the driving gear 29 to rotate, the driving gear 29 drives the steering gear 28 to rotate, the steering gear 28 drives the screw rod 27 to rotate, the screw rod 27 drives the adjusting block 38 to slide in the supporting plate 2, the height of the supporting roller 35 is adjusted, and the clamping force between the flattening roller 24 and the supporting roller 35 on the label is adjusted.

The utility model discloses a theory of operation does:

a worker sleeves the paper tube 40 on the air expansion roller 3 in advance, the sliding positioning ring 6 adjusts the position of the limiting ring 9, when the limiting ring 9 is about to abut against the edge of the paper tube 40, the threaded ring 11 is rotated, the movable block 4 is gradually pressed in the rotation process of the threaded ring 11, the movable block 4 abuts against the outer wall of the pressing roller 5, and then the air expansion roller 3 is inflated, so that the movable block 4 protrudes out of the surface of the air expansion roller 3 to abut against the paper tube 40; when the label is wound, the air expansion roller 3 rotates and winds the label on the paper tube 40, the label roll gradually pushes the pressing roller 5 along with the gradual thickening of the label roll, the pressing roller 5 drives the adjusting block 26 to gradually compress the adjusting spring 18, and the pressing roller 5 continuously presses the label under the elastic force action of the adjusting spring 18; when the label roll is completely rolled, the air in the air expansion roller 3 is pumped out, the movable block 4 retracts and releases the tight jacking of the paper tube 40, then the push block 13 rises and lifts the compression roller 5, and at the moment, the staff can take out the label roll.

The utility model has the advantages that:

through rotating threaded ring 11 for locating piece 8 loosens the centre gripping to pinch roller 5, later removes the position of holding ring 6 and realizes adjusting the position of spacing ring 9, and spacing ring 9 has played limiting displacement to the label, and at the in-process to the label rolling, the label is in between two spacing rings 9 all the time, prevents that the label from taking place the skew. In the 3 rolling in-process of inflatable roller, compressing roller 5 compresses tightly the label, and along with the label on the inflatable roller 3 thickens gradually, compressing roller 5 compresses adjusting spring 18 gradually, and compressing roller 5 realizes continuously compressing tightly the label under adjusting spring 18's elastic force effect, and the label winding is inseparabler more, is difficult to scatter more, and the winding position is difficult to the skew more. When the label roll is completed, the push block 13 rises to lift the pinch roller 5, and the paper tube 40 and the label roll are taken down.

The above, only do the preferred embodiment of the present invention, not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a rolling device of label printing machine which characterized in that: the paper tube pressing device comprises a base (1), wherein a supporting plate (2) is fixedly arranged on the upper surface of the base (1), an air expansion roller (3) and a pressing roller (5) are rotatably arranged on one side of the supporting plate (2), the air expansion roller (3) is positioned under the pressing roller (5), a plurality of movable blocks (4) are embedded on the periphery of the surface of the air expansion roller (3), and a paper tube (40) is sleeved on the periphery of the air expansion roller (3); compressing roller (5) both ends all are provided with spacing subassembly, spacing subassembly includes the edge holding ring (6) that slides and set up on compressing roller (5) axis direction, a plurality of constant head tanks (7) have been seted up to holding ring (6) inner wall, and is a plurality of equal elasticity is provided with locating piece (8) in constant head tank (7), one side of holding ring (6) has set firmly spacing ring (9), holding ring (6) are kept away from annular groove (10) have been seted up to one side of spacing ring (9), annular groove (10) interior screw-thread fit has screw ring (11), locating piece (8) are kept away from the one end of compressing roller (5) is provided with circular arc inclined plane (12), screw ring (11) stretch into one end in constant head tank (7) with circular arc inclined plane (12) agree with.

2. A winding device of a label printing machine according to claim 1, characterized in that: a plurality of mounting grooves (15) have been seted up along its axis direction to compression roller (5) week side, locating piece (8) stretch into extremely in mounting groove (15), be provided with spacing spring (16) in constant head tank (7) just spacing spring (16) cover is established the outside of locating piece (8).

3. A winding device of a label printing machine according to claim 1, characterized in that: the adjustable roller pressing device is characterized in that an adjusting groove (17) is formed in the supporting plate (2), an adjusting block (26) is arranged in the adjusting groove (17) in a sliding mode, the pressing roller (5) is rotatably arranged on the adjusting block (26), an adjusting spring (18) is fixedly arranged in the adjusting groove (17), one end of the adjusting spring (18) is fixedly connected with the inner wall of the adjusting groove (17), and the other end of the adjusting spring is fixedly connected with the adjusting block (26).

4. A winding device of a label printing machine according to claim 3, characterized in that: and a circular inclined plane (19) is arranged on the edge of the limiting ring (9) far away from the compression roller (5).

5. A winding device of a label printing machine according to claim 1, characterized in that: the air expansion roller is characterized in that a flattening roller (24) is arranged on the side face, where the air expansion roller (3) is located, of the supporting plate (2) in a rotating mode, an adjusting groove (25) is formed in the supporting plate (2), an adjusting block (38) is arranged in the adjusting groove (25) in a sliding mode, a supporting roller (35) is arranged on one side of the adjusting block (38) in a rotating mode, and the supporting roller (35) is located under the flattening roller (24).

6. The winding device of a label printing machine according to claim 5, characterized in that: lead screw (27) are worn to be equipped with by screw on adjusting block (38), lead screw (27) orientation one side of base (1) has set firmly steering gear (28), backup pad (2) internal rotation is provided with drive gear (29), steering gear (28) with drive gear (29) intermeshing, one side of backup pad (2) has set firmly driving motor (30), the drive end of driving motor (30) with drive gear (29) transmission is connected.

7. A winding device of a label printing machine according to claim 1, characterized in that: the side face of the supporting plate (2) where the air expansion roller (3) is located is provided with a push block (13) in a lifting mode, the side face of the supporting plate (2) where the air expansion roller (3) is located is provided with a limiting groove (41), and the push block (13) is arranged on the limiting groove (41) in a sliding mode.

8. The winding device of a label printing machine according to claim 7, characterized in that: the limiting groove (41) is rotatably provided with a screw rod (32), the screw rod (32) penetrates through the push block (13) in a threaded mode, the upper surface of the supporting plate (2) is fixedly provided with a servo motor (33), and the screw rod (32) is in transmission connection with the driving end of the servo motor (33).