Box suction mechanism with follow-up box pre-opening function

Abstract

The utility model discloses a box suction mechanism with a follow-up type box pre-opening function, which belongs to the technical field of packaging equipment and comprises a rotator, a suction cup rod is mounted on the front side of the rotator, and a suction cup used for sucking and carrying a paper box is mounted at one end, far away from the rotator, of the suction cup rod; the rotator can be driven by a first driving mechanism to do circumferential rotation so as to move the suction cup to a box taking station to adsorb a paper box, and the paper box is placed on the conveying chain. A shifting rod is further arranged on one side of the suction cup rod and can be driven by a second driving mechanism to rotate in the same direction along with the suction cup so as to gradually and slowly extrude and open the paper box, and impact force borne by the paper box is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging equipment, in particular to a box suction mechanism with a follow-up pre-box opening function. Background Art

[0002] In common medium and high speed cartoning machines, the box sucking mechanism is mostly a planetary wheel type box sucking mechanism. The planetary wheel type box sucking mechanism mainly includes a planetary wheel, a rotating disk, a suction rod, a suction cup, etc.

[0003] The process of the box suction mechanism sucking up the carton is as follows: the suction cup on the suction rod rotates to the carton and fits with the carton, the carton is sucked up by the suction cup and taken out from the carton warehouse, and in the process of the rotating disk driving the suction rod to rotate, a block or auxiliary suction cup is placed on the movement path of the carton to pre-open the carton, and then the carton is placed on the conveyor chain and filled with materials.

[0004] Since the high-speed cartoning machine has a fast cartoning speed, the corresponding cartoning speed must also maintain a high efficiency, which requires the rotating disk to have a higher speed.

[0005] Under this premise, the carton is pre-opened by means of a block, and the carton is easily damaged when it rotates and collides with the block, and the impact force during the collision easily causes the carton to fall off; the auxiliary suction cup is arranged on the opposite side of the main suction cup. After the auxiliary suction cup sucks the carton, the force of the rotation of the suction rod is used to pull the two suction cups apart, which also makes it easy for the carton to fall off the main suction cup.

[0006] In summary, during the box opening process, the carton is easy to fall off in the box suction mechanism of the existing high-speed cartoning machine; after the carton leaves the block or the auxiliary suction cup, there is no other supporting member to support the carton, and the carton will stick together again under the action of its own elastic force, affecting the placement of the carton on the conveyor chain. Utility Model Content

[0007] The utility model aims to provide a box suction mechanism with a follow-up pre-box opening function, so as to solve the technical problem that the box suction mechanism of the existing high-speed cartoning machine in the prior art is easy to fall off during the box opening process; after the box leaves the block or the auxiliary suction cup, there is no other supporting member to support the box, and the box will be attached again under the action of its own elastic force.

[0008] In order to solve the above technical problems, the utility model specifically provides a box suction mechanism with a follow-up pre-box opening function, comprising a rotator, a suction cup rod is installed on the front side of the rotator, and a suction cup for sucking and carrying a paper box is installed at one end of the suction cup rod away from the rotator;

[0009] The rotator can rotate in a circle under the drive of the first driving mechanism to move the suction cup to the box taking station to absorb the paper box and place the paper box on the transmission chain;

[0010] A lever is also provided on one side of the suction cup rod. The lever can rotate in the same direction as the suction cup under the drive of the second driving mechanism, so as to gradually and slowly squeeze and open the paper box, thereby reducing the impact force on the paper box.

[0011] As a preferred solution of the utility model, the suction cup rod is fixedly connected to the gear shaft, the gear shaft passes through the rotator, and is rotatably connected to the rotator through a bearing;

[0012] One end of the gear shaft located at the rear side of the rotator is fixedly connected to a planetary gear, and the planetary gear is drivingly connected to the sun gear through an intermediate gear;

[0013] The rotator is rotatably connected to the central axis of the sun gear through a bearing, the sun gear is fixedly mounted on the frame assembly, and the intermediate gear is rotatably mounted on the rotator, so that the suction cup rod can rotate while rotating with the rotator.

[0014] As a preferred solution of the utility model, the second driving mechanism comprises a pre-box opening motor fixedly mounted on the front side of the rotator, a first pre-box opening gear mounted on the output end of the pre-box opening motor, a fourth pre-box opening gear fixedly connected to one end of the lever close to the rotator, and a second pre-box opening gear and a third pre-box opening gear mounted on the gear shaft through bearings;

[0015] The second pre-box-opening gear is fixedly connected to the third pre-box-opening gear, the first pre-box-opening gear is meshed with the second pre-box-opening gear, and the fourth pre-box-opening gear is meshed with the third pre-box-opening gear;

[0016] The shifting rod and the sucker rod are installed on the same bearing seat.

[0017] As a preferred solution of the utility model, the rotator is configured in a disc shape, and the rotator is coaxially arranged with the sun gear;

[0018] The suction cup rod, the suction cup, the shifting rod and the second driving mechanism are arranged in a plurality of groups at equal intervals in the circumferential direction of the rotator.

[0019] As a preferred solution of the utility model, a conductive slip ring is installed coaxially with the sun gear on the front side of the rotator, and the conductive slip ring is used to supply power to the pre-opening box motor.

[0020] As a preferred solution of the utility model, the frame assembly includes a fixed frame and a lifting plate, the sun gear is fixedly installed on the front side of the lifting plate, and the lifting plate is vertically slidably connected to the front side of the fixed frame;

[0021] The lifting plate can rise or fall under the drive of the lifting mechanism to adjust the height of the suction cup from the conveying chain when placing the paper box, so as to adapt to paper boxes of different heights.

[0022] As a preferred solution of the utility model, the lifting mechanism is arranged on the top of the fixing frame, and includes a screw rod vertically rotatably connected to the fixing frame, and the screw rod is threadedly connected to the lifting plate;

[0023] A first bevel gear is fixedly arranged on the top of the screw rod, and the first bevel gear is meshed with a second bevel gear fixedly connected to the end of the driving rod. The driving rod is rotatably connected to the top of the fixing frame through a bearing.

[0024] As a preferred solution of the utility model, the first driving mechanism comprises a main servo motor and a main gear mounted on the output shaft of the main servo motor, the main gear meshing with a gear ring disposed outside the rotator. The main servo motor is fixedly mounted on the lifting plate.

[0025] As a preferred solution of the utility model, a plurality of suction cups are arranged side by side on the same suction cup rod.

[0026] Compared with the prior art, the utility model has the following beneficial effects:

[0027] By arranging a rotatable lever on the near side of the suction cup rod, after the suction cup is adsorbed to the paper box, the lever and the suction cup rod rotate in the same direction, and the rotation speed is slightly faster than the suction cup rod, so that the lever squeezes the paper box to open; since the lever and the suction cup rod rotate in the same direction, while maintaining an efficient box opening speed, the approach speed between the lever and the paper box is relatively slow, and the paper box can be gently squeezed to open, reducing the probability of the paper box falling off the suction cup due to the impact of box opening.

[0028] After the paper box is fully opened, the rotation speed of the lever is reduced or stopped, and the lever is kept in contact with the paper box to prevent the paper box from closing again due to its own elastic force. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0030] Figure 1 It is a schematic diagram of the driving mechanism of the rotating device, the lever and the suction cup in the utility model;

[0031] Figure 2 for Figure 1A rear view schematic diagram of

[0032] Figure 3 It is a structural schematic diagram of the suction cup rod, suction cup and lever in the utility model;

[0033] Figure 4 This is a schematic diagram of the suction cup of the present invention just sucking up the paper box;

[0034] Figure 5 This is a schematic diagram of the paper box in the present invention when it is fully opened;

[0035] Figure 6 This is a schematic diagram of the lever in the utility model maintaining the paper box in an open state;

[0036] Figure 7 This is a schematic diagram of the suction cup in the present invention when the carton is about to be placed on the conveyor chain;

[0037] Figure 8 It is a structural schematic diagram of the frame assembly in the utility model;

[0038] Fig. 9 This is a schematic diagram of the structure after the opening and closing assembly of the utility model is installed on the frame assembly;

[0039] Fig.10 for Fig. 9 A rear view schematic diagram of

[0040] Fig.11 It is a schematic diagram of the motion trajectory of the suction cup in the utility model.

[0041] The numbers in the figure represent the following:

[0042] 1-rotator, 2-suction cup rod, 3-suction cup, 4-paper box, 5-shift lever, 6-gear shaft, 7-planetary gear, 8-intermediate gear, 9-sun gear, 10-pre-opening box motor, 11-first pre-opening box gear, 12-second pre-opening box gear, 13-third pre-opening box gear, 14-fourth pre-opening box gear, 15-bearing seat, 16-conductive slip ring, 17-fixed frame, 18-lifting plate, 19-screw, 20-first bevel gear, 21-driving rod, 22-second bevel gear, 23-main servo motor, 24-main gear, 25-gear ring, 26-box suction station, 27-box placement station, 28-box bracket. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] In order to solve the problem that the existing pre-opening mechanism easily causes the paper box 4 to fall off the suction cup 3 during the opening process, the utility model provides a suction box mechanism with a follow-up pre-opening function. The pre-opening mechanism has a gentler opening action and can greatly reduce the probability of the paper box 4 falling off.

[0045] The specific structure of the pre-opening mechanism is as follows:

[0046] The utility model comprises a rotator 1 , a suction cup rod 2 is installed on the front side of the rotator 1 , and a suction cup 3 for sucking and carrying a paper box 4 is installed on one end of the suction cup rod 2 away from the rotator 1 .

[0047] The rotator 1 can rotate in a circle under the drive of the first driving mechanism to move the suction cup 3 to the box taking station to absorb the paper box 4 and place the paper box 4 on the transmission chain.

[0048] A lever 5 is also provided on one side of the suction cup rod 2. The lever 5 can rotate in the same direction as the suction cup 3 under the drive of the second driving mechanism, so as to gradually and slowly squeeze and open the paper box 4, thereby reducing the impact force on the paper box 4.

[0049] The working principle of the above-mentioned box suction mechanism is:

[0050] The first driving mechanism provides rotational power for the rotator 1 , so that the suction cup rod 2 and the shifting rod 5 installed on the rotator 1 rotate in a circle synchronously with the rotator 1 .

[0051] When the suction cup rod 2 rotates to the box taking station 26, the vacuum device is started, so that the suction cup 3 sucks the paper box 4 from the box support 28 (the box support contains the unopened paper box 4).

[0052] Subsequently, the suction cup 3 rotates with the rotator 1 with the paper box 4 sucked by it. At this time, the second driving mechanism is started, and the second driving mechanism drives the lever 5 on the side of the suction cup rod 2 to rotate, so that the plate-shaped lever head at the end of the lever 5 fits with the paper box 4 and squeezes the paper box 4, so that the paper box 4 slowly opens.

[0053] And the paper box 4 is placed on the transmission chain at the box placing station 27 (i.e. the lowest point of the circular rotation).

[0054] Since the rotation direction of the lever 5 is the same as that of the suction cup 3, that is, the rotation direction of the rotator 1, the lever 5 is always located at the rear side of the moving direction of the paper box 4 when squeezing the paper box 4, and is in a following state.

[0055] After the suction cup 3 is attached to the paper box 4, even if the rotation speed of the rotator 1 is high, the rotation speed of the lever 5 only needs to be slightly faster than the rotation speed of the suction cup rod 2 to squeeze and open the paper box 4.

[0056] And because the lever 5 and the suction cup rod 2 rotate in the same direction, even if the lever 5 is faster than the suction cup rod 2, the lever 5 approaches the paper box 4 slowly, and can gently squeeze and open the paper box 4, reducing the probability of the paper box 4 falling off the suction cup 3 due to the impact of opening the box.

[0057] It can be understood that the rotation speed of the lever 5 is adjustable. In the box opening stage, the lever 5 rotates quickly to squeeze open the paper box 4; after the paper box 4 is fully opened, the rotation speed of the lever 5 is reduced or stopped, keeping the lever 5 and the paper box 4 in contact to prevent the paper box 4 from closing again under the action of its own elastic force.

[0058] Furthermore, the suction cup rod 2 is fixedly connected to the gear shaft 6, the gear shaft 6 passes through the rotator 1, and is rotatably connected to the rotator 1 through a bearing.

[0059] One end of the gear shaft 6 located at the rear side of the rotator 1 is fixedly connected with a planetary gear 7 , and the planetary gear 7 is transmission-connected to the sun gear 9 via an intermediate gear 8 .

[0060] The rotator 1 is rotatably connected to the central axis of the sun gear 9 through a bearing. The sun gear 9 is fixedly mounted on the frame assembly. The intermediate gear 8 is rotatably mounted on the rotator 1 so that the suction cup rod 2 can rotate while rotating with the rotator 1.

[0061] The specific principle of the above-mentioned suction cup rod 2 rotation is:

[0062] When the rotator 1 rotates, the sun gear 9 is fixed, and since the planetary gear 7 is meshed with the sun gear 9 through the intermediate gear 8, the planetary gear 7 will rotate, and the rotation direction of the planetary gear 7 is opposite to the rotation direction of the rotator 1.

[0063] The rotation of the planetary gear 7 will drive the gear shaft 6 to rotate, thereby causing the suction cup rod 2 to rotate, and the rotation of the suction cup rod 2 will drive the paper box 4 on the suction cup 3 to rotate synchronously.

[0064] That is, while the suction cup 3 rotates in a circle with the rotator 1 , it also rotates on its own, and the rotation direction is opposite to the rotation direction of the rotator 1 .

[0065] The planetary gear structure can be used to optimize the motion trajectory of the end of the suction cup 3 to obtain a hypocycloid trajectory suitable for sucking the box. During the box removal process, the suction cup 3 can reach the surface of the paper box in a nearly vertical direction to avoid the restrictions on the two sides of the box support 28, and then suck the paper box out in a nearly vertical direction to complete the box suction, thereby increasing the success rate of box suction.

[0066] At the same time, the speed of the circular gear planetary gear train box-taking trajectory at the box-sucking station 26 and the box-putting station 27 is zero, the acceleration is maximum, and its speed changes quickly, which can make the box-sucking and box-putting actions more stable.

[0067] Furthermore, according to the working process of the lever 5 squeezing the paper box 4 to open the box, the lever 5 needs to be closer to the paper box 4, that is, the distance between the lever 5 and the suction cup 3 needs to be set smaller. For this purpose, the utility model provides the following settings for the second driving mechanism:

[0068] The second driving mechanism includes a pre-box-opening motor 10 fixedly mounted on the front side of the rotator 1, a first pre-box-opening gear 11 mounted on the output end of the pre-box-opening motor 10, a fourth pre-box-opening gear 14 fixedly connected to the end of the lever 5 close to the rotator 1, and a second pre-box-opening gear 12 and a third pre-box-opening gear 13 mounted on the gear shaft 6 through bearings.

[0069] The second pre-box-opening gear 12 is fixedly connected to the third pre-box-opening gear 13 , the first pre-box-opening gear 11 is meshed with the second pre-box-opening gear 12 , and the fourth pre-box-opening gear 14 is meshed with the third pre-box-opening gear 13 .

[0070] The lever 5 and the suction cup lever 2 are mounted on the same bearing seat 15 .

[0071] The working principle of the second driving mechanism is as follows:

[0072] The pre-box opening motor 10 drives the first pre-box opening gear 11 to rotate, and the first pre-box opening gear 11 drives the second pre-box opening gear 12 and the third pre-box opening gear 13 to rotate synchronously on the gear shaft 6; since the fourth pre-box opening gear 14 is meshed with the third pre-box opening gear 13, the lever 5 will rotate.

[0073] It should be noted that the rotation direction of the lever 5 is the same as the rotation direction of the suction cup rod 2 .

[0074] The same rotation direction mentioned above includes two situations:

[0075] When the suction cup rod 2 only rotates following the rotator 1 , the rotation direction of the suction cup rod 2 is consistent with that of the rotator 1 , and the rotation direction of the lever 5 is the same as that of the suction cup rod 2 , which means that the rotation direction of the lever 5 is also consistent with that of the rotator 1 .

[0076] When the suction cup rod 2 rotates along with the rotator 1, it also rotates itself. The rotation direction of the lever 5 is the same as that of the suction cup rod 2, which means that the rotation direction of the lever 5 is consistent with that of the suction cup rod 2.

[0077] Furthermore, in order to improve the opening and closing efficiency, the present invention makes the following improvements to the rotator 1:

[0078] The rotor 1 is configured to be in a disk shape, and the rotor 1 and the sun gear 9 are coaxially disposed.

[0079] A plurality of groups of the suction cup rods 2 , the suction cups 3 , the levers 5 and the second driving mechanism are arranged at equal intervals in the circumferential direction of the rotator 1 .

[0080] That is, a plurality of suction cup rods 2 and supporting parts are arranged on the same rotator 1, so that a plurality of paper boxes 4 can be opened by rotating the rotator 1 one circle.

[0081] Furthermore, in view of the characteristic that the pre-opening box motor 10 will rotate in a circle with the rotating device 1, in order to avoid cable entanglement, the present invention makes the following improvements to the power supply method of the pre-opening box motor 10:

[0082] A conductive slip ring 16 is installed coaxially with the sun gear 9 on the front side of the rotator 1 , and the conductive slip ring 16 is used to supply power to the pre-opening box motor 10 .

[0083] Furthermore, considering that the sizes of the paper boxes 4 may vary, in order to enable the pre-opening mechanism to adapt to paper boxes 4 of more sizes, it is required that when the suction cup 3 is rotated to face downward, that is, facing the conveying chain, the height difference between the suction cup 3 and the conveying chain can be adjusted larger or smaller.

[0084] In order to realize the above concept, the utility model makes the mechanism for adsorbing and opening the suction cup 3 capable of lifting and lowering, as follows:

[0085] The frame assembly includes a fixed frame 17 and a lifting plate 18 . The sun gear 9 is fixedly installed on the front side of the lifting plate 18 . The lifting plate 18 is vertically slidably connected to the front side of the fixed frame 17 .

[0086] The lifting plate 18 can rise or fall under the drive of the lifting mechanism to adjust the height of the suction cup 3 from the conveying chain when the paper box 4 is placed, so as to adapt to paper boxes 4 of different heights.

[0087] For example, a slide slot hole can be vertically set on the fixing frame 17, and a slider can be set on the lifting plate 18. The slider is inserted into the slide slot hole, and a clamping plate is fixed to the slider by screws from the rear side of the fixing frame 17, so that the lifting plate 18 is clamped and fixed on the fixing frame 17. When the height of the lifting plate 18 needs to be adjusted, the screws are loosened to release the fixation.

[0088] The specific structure of the above lifting mechanism is as follows:

[0089] The lifting mechanism is arranged on the top of the fixing frame 17, and includes a screw rod 19 which is vertically rotatably connected to the fixing frame 17, and the screw rod 19 is threadedly connected to the lifting plate 18;

[0090] A first bevel gear 20 is fixedly provided on the top of the screw rod 19 , and the first bevel gear 20 is meshed with a second bevel gear 22 fixedly connected to the end of a driving rod 21 , and the driving rod 21 is rotatably connected to the top of the fixing frame 17 through a bearing.

[0091] The specific structure of the first driving mechanism in the utility model is as follows:

[0092] The first driving mechanism includes a main servo motor 23 and a main gear 24 mounted on the output shaft of the main servo motor 23 . The main gear 24 is meshed with a gear ring 25 disposed outside the rotator 1 .

[0093] The main servo motor 23 is fixedly mounted on the lifting plate 18 , and when the lifting plate 18 rises or falls, the main gear 24 can always remain in meshing with the ring gear 25 .

[0094] Furthermore, in order to improve the stability of the suction cup 3 adsorbing the paper box 4 , a plurality of suction cups 3 are arranged side by side on the same suction cup rod 2 .

[0095] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A box suction mechanism with follow-up pre-opening function, characterized in that: It comprises a rotator (1), a suction cup rod (2) is installed on the front side of the rotator (1), and a suction cup (3) for sucking and carrying a paper box (4) is installed on one end of the suction cup rod (2) away from the rotator (1); The rotator (1) can rotate in a circle under the drive of the first driving mechanism to move the suction cup (3) to the box taking station to absorb the paper box (4) and place the paper box (4) on the transmission chain; A lever (5) is also provided on one side of the suction cup rod (2). The lever (5) can rotate in the same direction as the suction cup (3) under the drive of the second driving mechanism, so as to gradually and slowly squeeze and open the paper box (4), thereby reducing the impact force on the paper box (4).

2. The box suction mechanism with follow-up pre-opening function according to claim 1, characterized in that: The suction cup rod (2) is fixedly connected to the gear shaft (6), and the gear shaft (6) passes through the rotator (1) and is rotatably connected to the rotator (1) via a bearing; One end of the gear shaft (6) located at the rear side of the rotator (1) is fixedly connected to a planetary gear (7), and the planetary gear (7) is transmission-connected to a sun gear (9) via an intermediate gear (8); The rotator (1) is rotatably connected to the central axis of the sun gear (9) via a bearing, the sun gear (9) is fixedly mounted on the frame assembly, and the intermediate gear (8) is rotatably mounted on the rotator (1), so that the suction cup rod (2) can rotate while rotating with the rotator (1).

3. The box suction mechanism with follow-up pre-opening function according to claim 2, characterized in that: The second driving mechanism comprises a pre-box opening motor (10) fixedly mounted on the front side of the rotating device (1), a first pre-box opening gear (11) mounted on the output end of the pre-box opening motor (10), a fourth pre-box opening gear (14) fixedly connected to one end of the lever (5) close to the rotating device (1), and a second pre-box opening gear (12) and a third pre-box opening gear (13) mounted on the gear shaft (6) via bearings; The second pre-box-opening gear (12) and the third pre-box-opening gear (13) are fixedly connected, the first pre-box-opening gear (11) is meshed with the second pre-box-opening gear (12), and the fourth pre-box-opening gear (14) is meshed with the third pre-box-opening gear (13); The shifting rod (5) and the sucker rod (2) are mounted on the same bearing seat (15).

4. The box suction mechanism with follow-up pre-box opening function according to claim 3, characterized in that: The rotor (1) is configured to be in the shape of a disk, and the rotor (1) is coaxially disposed with the sun gear (9); The suction cup rod (2), the suction cup (3), the shifting rod (5) and the second driving mechanism are arranged in multiple groups at equal intervals in the circumferential direction of the rotating device (1).

5. The box suction mechanism with follow-up pre-opening function according to claim 4, characterized in that: A conductive slip ring (16) is coaxially mounted on the front side of the rotator (1) and the sun gear (9), and the conductive slip ring (16) is used to supply power to the pre-opening box motor (10).

6. The box suction mechanism with follow-up pre-opening function according to claim 5, characterized in that: The frame assembly comprises a fixed frame (17) and a lifting plate (18), the sun gear (9) is fixedly mounted on the front side of the lifting plate (18), and the lifting plate (18) is vertically slidably connected to the front side of the fixed frame (17); The lifting plate (18) can rise or fall under the drive of the lifting mechanism to adjust the height of the suction cup (3) from the transmission chain when placing the paper box (4) to adapt to paper boxes (4) of different heights.

7. The box suction mechanism with follow-up pre-box opening function according to claim 6, characterized in that: The lifting mechanism is arranged on the top of the fixing frame (17), and comprises a screw rod (19) vertically rotatably connected to the fixing frame (17), and the screw rod (19) is threadedly connected to the lifting plate (18); A first bevel gear (20) is fixedly arranged on the top of the screw rod (19), and the first bevel gear (20) is meshed with a second bevel gear (22) fixedly connected to the end of a driving rod (21), and the driving rod (21) is rotatably connected to the top of the fixing frame (17) through a bearing.

8. The box suction mechanism with follow-up pre-box opening function according to claim 7, characterized in that: The first driving mechanism comprises a main servo motor (23) and a main gear (24) mounted on an output shaft of the main servo motor (23), wherein the main gear (24) is meshed with a gear ring (25) disposed outside the rotating device (1); The main servo motor (23) is fixedly mounted on the lifting plate (18).

9. The box suction mechanism with follow-up pre-opening function according to claim 1, characterized in that: A plurality of suction cups (3) are arranged side by side on the same suction cup rod (2).

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