Cap grabbing mechanism and cap screwing device

Abstract

The present invention relates to the field of screw cap technology, and in particular to a cap grabbing mechanism and a cap screwing device. The cap screwing device provided by the present invention comprises a cap screwing arm, a cap grabbing head, an adapter assembly, and a pre-pressing assembly. The cap grabbing head is connected to the lower end of the cap screwing arm; the adapter assembly is connected to the upper end of the cap screwing arm; the pre-pressing assembly comprises a slider, a spring seat, and a pre-pressing spring. The slider is slidably mounted on the cap screwing arm, and the slider abuts against the adapter assembly. The spring seat is fixedly mounted on the cap screwing arm and spaced apart from the slider. The upper end of the pre-pressing spring abuts against the slider, and its lower end abuts against the spring seat. When the force transmitted upward by the cap grabbing head exceeds the pressing force of the pre-pressing spring, the pre-pressing spring retracts, and the cap screwing arm and the cap grabbing head can move upward, preventing the cap screwing head from being unable to press down due to special reasons such as crooked caps, thereby preventing the machine and the bottle from being damaged. By providing the pre-pressing assembly, the cap screwing head structure can be eliminated, the volume of the cap grabbing mechanism operating end can be reduced, the space occupied can be small, and the cap grabbing head can be easily controlled.

Description

Technical Field

[0001] The present invention relates to the technical field of screw capping, and in particular to a cap grabbing mechanism and a cap screwing device. Background Art

[0002] In the liquid packaging industry, capping devices are used to secure bottle caps to bottles filled with product. These devices typically consist of a capping mechanism, a capping screwing mechanism, and a lifting mechanism. The capping mechanism grasps the bottle cap, while the capping screwing mechanism drives the capping mechanism to rotate and tighten the cap onto the bottle. Because the capping mechanism's height differs when grasping and tightening the cap, a lifting mechanism is required to drive the capping mechanism up and down, enabling both the grasping and tightening operations.

[0003] In existing capping devices, the capping mechanism includes a capping arm, a capping head, and a capping head, which are arranged in sequence. The capping head is used to grab and tighten the bottle cap; the capping arm is used to transmit power from the lifting mechanism and the capping mechanism to the capping head; the capping head is used to provide pre-pressure for the capping head, and at the same time, it can prevent the capping head from being unable to press down due to special reasons such as crooked caps, which could damage the machine and the bottle. However, the existing capping head has a complex structure. The installation of the capping head increases the size of the working end below the capping mechanism, taking up a lot of space, and it is not convenient to directly control the capping head.

[0004] Therefore, a cover grabbing structure is urgently needed to solve the above problems. Summary of the Invention

[0005] One object of the present invention is to provide a cap grabbing mechanism with a simple structure, a small operating end volume, a small space occupation, easy control of the cap grabbing head, and the ability to prevent the cap grabbing head from being unable to press down due to special reasons such as crooked caps, thereby damaging the machine and bottles.

[0006] Another object of the present invention is to provide a capping device. By applying the above-mentioned capping mechanism, the volume of the whole device is reduced, the space occupied is small, the scope of the sterile space can be reduced, and the cost is reduced.

[0007] To achieve the above objectives, the following technical solutions are provided:

[0008] In one aspect, a cover grabbing mechanism is provided, comprising:

[0009] Capping arm;

[0010] A capping head connected to the lower end of the capping arm;

[0011] An adapter assembly connected to the upper end of the capping arm and adapted to cooperate with the lifting mechanism;

[0012] The pre-stressing assembly includes a slider, a spring seat and a pre-stressing spring. The slider is slidably mounted on the rotary cover arm and abuts against the adapter assembly. The spring seat is fixedly mounted on the rotary cover arm and spaced apart from the slider. The upper end of the pre-stressing spring abuts against the slider, and the lower end abuts against the spring seat.

[0013] On the other hand, a capping device is provided, comprising a support base, a capping mechanism, a lifting mechanism and the capping mechanism as described above, wherein the support base comprises a rotating frame and a rotating shaft, the rotating shaft is fixedly connected to the rotating frame, and the rotating shaft can drive the rotating frame to rotate; the capping mechanism and the capping mechanism are both arranged on the rotating frame, the lifting mechanism is rotatably arranged on the rotating shaft, the capping mechanism is used to drive the capping arm to rotate, and the lifting mechanism is used to drive the capping arm to rise and fall.

[0014] As an optional solution for the rotary cover device, the rotary cover mechanism includes a rotary drive, a sleeve and a sleeve limiting assembly, the sleeve is rotatably arranged on the rotating frame, the sleeve limiting assembly is used to limit the movement of the sleeve in its axial direction, the rotary cover arm is slidably arranged in the sleeve, and the sleeve can drive the rotary cover arm to rotate; the rotary drive is used to drive the sleeve to rotate, so as to drive the rotary cover arm to rotate.

[0015] As an optional solution for the rotary cover device, the rotary cover arm is inserted into the shaft sleeve, and a sliding groove extending in the vertical direction is provided on the side wall of the shaft sleeve. A sliding key is provided on the rotary cover arm, and the sliding key is slidably provided in the sliding groove. The rotation of the shaft sleeve can drive the rotary cover arm to rotate, and the rotary cover arm can be raised and lowered relative to the shaft sleeve.

[0016] As an optional solution for the rotary cover device, the lifting mechanism includes a cylindrical cam, which is rotatably arranged on the rotating shaft, and a lifting slot is provided on the cylindrical cam. One end of the adapter assembly is rotatably slidably engaged with the lifting slot, and the other end thereof is rotatably connected to the upper end of the rotary cover arm.

[0017] As an optional solution for the screw-on cap device, the lifting chute includes a cap-grabbing area, a first transition area, a cap-spinning area, and a second transition area in sequence. The height of the cap-grabbing area remains unchanged, the height of the cap-spinning area remains unchanged, the height of the cap-spinning area is greater than the height of the cap-grabbing area, the first transition area is used for transition from the cap-grabbing area to the cap-spinning area, and the second transition area is used for transition from the cap-spinning area to the cap-grabbing area.

[0018] As an optional scheme for the rotary cover device, the adapter assembly includes a shaft bearing, a shaft bearing seat, a stop plate, a bearing and a limit piece, one end of the shaft bearing is rotatably slidably engaged with the lifting slide, and the other end thereof is fixedly connected to the upper end of the shaft bearing seat; the stop plate is arranged on the shaft bearing seat and can abut against the outer wall of the cylindrical cam; the lower end of the shaft bearing seat is rotatably connected to the rotary cover arm through the bearing; the limit piece is fixedly arranged at the upper end of the rotary cover arm, and the limit piece is used to make the rotary cover arm and the shaft bearing seat rise and fall synchronously.

[0019] As an optional solution for the rotary cover device, the rotary cover mechanism also includes a first gear and a second gear that are meshed with each other, the first gear is fixedly connected to the output end of the rotary driver, and the second gear is fixedly sleeved on the shaft sleeve, and the rotary driver can drive the first gear to drive the second gear to rotate, so that the shaft sleeve rotates.

[0020] As an optional solution of the screw cap device, the screw cap mechanism further includes a bellows, the upper end of the bellows is fixedly connected to the bottom of the sleeve, and the lower end of the bellows is fixedly connected to the lower end of the screw cap arm.

[0021] As an optional solution of the rotary capping device, the rotary capping device further includes a surrounding frame, and the surrounding frame is rotatably and sealedly connected to the rotary frame.

[0022] As an optional solution of the capping device, the rotary drive is a servo motor.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The capping device provided by the present invention includes a capping arm, a capping head, an adapter assembly, and a pre-pressing assembly. By disposing the pre-pressing assembly between the capping arm and the adapter assembly, when the upward force transmitted by the capping head exceeds the compressive force of the pre-pressing spring, the pre-pressing spring retracts, allowing the capping arm and capping head to move upward. This prevents the capping head from being unable to press down due to special reasons such as crooked caps, which could damage the machine and the bottle. Furthermore, the pre-pressing assembly eliminates the need for a capping head, reducing the size of the capping mechanism's operating end, taking up less space, and facilitating control of the capping head.

[0025] The capping device provided by the present invention reduces the volume of the entire device and occupies less space by applying the capping mechanism, thereby reducing the scope of the aseptic space and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in describing the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without any creative work.

[0027] Figure 1 A schematic structural diagram of a cover grabbing mechanism provided in an embodiment of the present invention;

[0028] Figure 2 A side sectional view of a screw capping device according to an embodiment of the present invention;

[0029] Figure 3 A top view of a capping device provided by an embodiment of the present invention;

[0030] Figure 4 for Figure 2 Enlarged view of point A in the middle.

[0031] Reference numerals:

[0032] 11-slewing frame; 111-shaft sleeve limiting sleeve; 12-rotating shaft;

[0033] 21- cylindrical cam;

[0034] 31-rotational driver; 32-shaft sleeve; 321-slideway; 33-shaft sleeve limiting assembly; 34-first gear; 35-second gear;

[0035] 41-capping arm; 411-sliding key; 42-capping head; 43-adapter assembly; 431-shaft bearing; 432-shaft bearing seat; 433-stop plate; 434-bearing; 435-limiting member; 436-bearing cover; 44-preload assembly; 441-slider; 442-spring seat; 443-preload spring; 45-bellows;

[0036] 5-enclosing frame; 51-sealing groove; 52-locking piece. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0038] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0039] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0040] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0041] like Figure 1 As shown, this embodiment provides a cover grabbing mechanism, including a cover screwing arm 41, a cover grabbing head 42, an adapter assembly 43 and a pre-stressing assembly 44, the cover grabbing head 42 is connected to the lower end of the cover screwing arm 41; the adapter assembly 43 is connected to the upper end of the cover screwing arm 41, and is used to cooperate with the lifting mechanism; the pre-stressing assembly 44 includes a slider 441, a spring seat 442 and a pre-stressing spring 443, the slider 441 is slidably mounted on the cover screwing arm 41, and the slider 441 abuts against the adapter assembly 43, the spring seat 442 is fixedly mounted on the cover screwing arm 41 and spaced apart from the slider 441, the upper end of the pre-stressing spring 443 abuts against the slider 441, and its lower end abuts against the spring seat 442.

[0042] By arranging a pre-compression assembly 44 between the capping arm 41 and the adapter assembly 43, when the upward force transmitted by the capping head 42 exceeds the pressing force of the pre-compression spring 443, the pre-compression spring 443 retracts, and the capping arm 41 and the capping head 42 can move upward, preventing the capping head 42 from being unable to press down due to special reasons such as crooked caps, thereby preventing damage to the machine and bottles.

[0043] In addition, by setting up the pre-pressing component 44, the capping head structure setting can be eliminated, the capping mechanism structure can be simplified, and the volume of the capping mechanism operating end can be reduced. The capping head 42 is directly connected to the capping arm 41, which is convenient for controlling the capping head 42.

[0044] like Figures 1-4 As shown, this embodiment provides a capping device, including a support base, a capping mechanism, a lifting mechanism and the above-mentioned capping mechanism. By applying the above-mentioned capping mechanism, the volume of the whole device is reduced, the space occupied is small, the sterile space range can be reduced, and the cost is reduced.

[0045] The support base includes a rotating frame 11 and a rotating shaft 12. The rotating shaft 12 is fixedly connected to the rotating frame 11 and can drive the rotating frame 11 to rotate; the capping mechanism and the capping mechanism are both arranged on the rotating frame 11, and the lifting mechanism is rotatably arranged on the rotating shaft 12. The capping mechanism is used to drive the capping arm 41 to rotate, and the lifting mechanism is used to drive the capping arm 41 to lift and lower.

[0046] Optionally, the capping mechanism includes a rotary driver 31, a sleeve 32, and a sleeve limiting assembly 33. The sleeve 32 is rotatably mounted on the rotating frame 11. The sleeve limiting assembly 33 is used to limit the movement of the sleeve 32 in its axial direction. The rotary driver 31 is mounted on the rotating frame 11 and is used to drive the sleeve 32 to rotate. The capping mechanism includes a capping arm 41 and a capping head 42. The lower end of the capping arm 41 is connected to the capping head 42, and the upper end of the capping arm 41 is connected to the lifting mechanism. Since the capping arm 41 is slidably mounted within the sleeve 32 and the sleeve 32 can drive the capping arm 41 to rotate, when the lifting mechanism can independently drive the capping arm 41 to rise and fall, the capping mechanism is not affected and can drive the capping arm 41 to rotate, thereby reducing the power consumption of the lifting mechanism.

[0047] During operation, the rotating shaft 12 drives the rotary frame 11 to drive the capping arm 41 to revolve to change the working position. The lifting mechanism drives the capping arm 41 to rise and fall independently to grab the bottle cap or prepare to tighten the bottle cap at different working positions. The rotary driver 31 drives the sleeve 32 to rotate and drive the capping arm 41 to rotate to perform the tightening operation.

[0048] In addition, the screw capping mechanism does not need to move up and down along with the screw capping arm 41, thus saving the guide rods, sleeves, motor mounting bases, tow cables, tow chains and other mechanisms required for its lifting movement, thereby saving production costs, reducing the risk of equipment instability caused by too many mechanisms, and improving the operation and maintenance performance of the equipment.

[0049] Preferably, sliding bearings are respectively provided at the upper and lower ends of the matching portion between the rotary cover arm 41 and the shaft sleeve 32 to ensure that the rotary cover arm 41 can slide along the shaft sleeve 32 in a direction.

[0050] like Figure 1As shown, the rotary cover arm 41 is inserted into the shaft sleeve 32, and a sliding groove 321 extending in the vertical direction is provided on the side wall of the shaft sleeve 32. A sliding key 411 is provided on the rotary cover arm 41, and the sliding key 411 is slidably provided in the sliding groove 321. The rotation of the shaft sleeve 32 can drive the rotary cover arm 41 to rotate, and the rotary cover arm 41 can be raised and lowered relative to the shaft sleeve 32.

[0051] The shaft sleeve retaining assembly 33 includes a ball bearing and a ball bearing retaining seat. A shaft sleeve retaining sleeve 111 is mounted on the slewing frame 11. The shaft sleeve 32 is rotatably connected to the shaft sleeve retaining sleeve 111 via the ball bearing, and the ball bearing provides axial positioning for the shaft sleeve 32. To ensure the ball bearing's position, the bearing retaining seat is fixed to the slewing frame 11. Furthermore, a seal is provided between the shaft sleeve 32 and the bearing retaining seat.

[0052] Optionally, the lifting mechanism includes a cylindrical cam 21 rotatably mounted on the rotating shaft 12. The cylindrical cam 21 is provided with a lifting slot, and the capping arm 41 is able to slide relative to the lifting slot. Specifically, when the rotating shaft 12 drives the rotating frame 11 to drive the capping arm 41 in orbital motion, the capping arm 41 is able to slide relative to the lifting slot on the cylindrical cam 21 and rise and fall with the lifting slot.

[0053] Preferably, the rotary driver 31 is a servo motor. This motor enables electrical parameterized control of capping torque, speed, and other parameters, improving the automation level of the equipment. By leveraging the servo motor's high repeatability, a single torque calibration after production or maintenance is performed can maintain stable torque output over the long term.

[0054] Optionally, there are multiple capping mechanisms, which are arranged around the rotating shaft 12 and each of which is equipped with a capping mechanism. The multiple capping mechanisms are driven by a cylindrical cam 21 to realize the lifting and lowering of the capping arm 41.

[0055] To achieve a high transmission ratio between the rotary driver 31 and the sleeve 32, saving on reducers and reducing costs, the capping mechanism also includes a meshing first gear 34 and a second gear 35. The first gear 34 is fixedly connected to the output end of the rotary driver 31, and the second gear 35 is fixedly mounted on the sleeve 32. The rotary driver 31 can drive the first gear 34 to rotate the second gear 35, thereby rotating the sleeve 32. Because the capping speed is relatively low (generally between 250 and 400 rpm), the high transmission ratio can reduce the output torque of the rotary servo motor, allowing the servo motor to approach or reach the rated speed, reducing the servo motor's power consumption and achieving energy conservation.

[0056] like Figure 2As shown, the capping mechanism further includes a bellows 45, the upper end of which is fixedly connected to the bottom of the sleeve 32, and the lower end of which is fixedly connected to the lower end of the capping arm 41. The bellows 45 is used to seal the connection between the sleeve 32 and the capping arm 41, further ensuring the sealed separation between the production workshop space and the internal sterile space, thereby ensuring the cleanliness of the internal sterile space.

[0057] In order to isolate the rotation of the rotary cover arm 41, one end of the adapter component 43 is rotatably and slidingly matched with the lifting slot, and the other end is rotatably connected to the rotary cover arm 41. The adapter component 43 can drive the rotary cover arm 41 to rise and fall with the lifting slot.

[0058] Alternatively, as Figure 2 Combine Figure 1 As shown, the adapter assembly 43 includes a shaft bearing 431, a shaft bearing seat 432, a stop plate 433, a bearing 434 and a limit member 435. One end of the shaft bearing 431 is rotatably slidably matched with the lifting slide, and the other end is fixedly connected to the upper end of the shaft bearing seat 432; the stop plate 433 is arranged on the shaft bearing seat 432 and can abut against the outer wall of the cylindrical cam 21; the lower end of the shaft bearing seat 432 is rotatably connected to the rotary cover arm 41 through the bearing 434; the limit member 435 is fixedly arranged at the upper end of the rotary cover arm 41, and the limit member 435 is used to make the rotary cover arm 41 and the shaft bearing seat 432 rise and fall synchronously.

[0059] During operation, when the rotating frame 11 drives the cover grabbing mechanism to rotate, the cylindrical cam 21 does not move, and the shaft bearing 431 and the lifting slot on the cylindrical cam 21 can be rotatably slidably matched to ensure that the shaft bearing 431 can slide smoothly along the lifting slot; the limiter 435 is used to ensure that when the shaft bearing seat 432 is lifted or lowered, the cover arm 41 can be driven to lift or lower; when the rotary driver 31 drives the sleeve 32 to drive the cover arm 41 to rotate, the bearing 434 is used to isolate the rotation of the cover arm 41, to prevent the shaft bearing seat 432 from rotating with the cover arm 41, and to ensure the stability of the adapter assembly 43.

[0060] In order to limit the bearing 434, the adapter assembly 43 also includes a bearing cover 436, which is detachably fixed on the shaft bearing seat 432. The upper end of the bearing 434 abuts against the shaft bearing seat 432, and its lower end abuts against the bearing cover 436.

[0061] For example, Figure 3 As shown, the lifting chute includes a cover grabbing area, a first transition area, a cover rotating area and a second transition area in sequence. The height of the cover grabbing area remains unchanged, the height of the cover rotating area remains unchanged, the height of the cover rotating area is greater than the height of the cover grabbing area, the first transition area is used for transitioning from the cover grabbing area to the cover rotating area, and the second transition area is used for transitioning from the cover rotating area to the cover grabbing area.

[0062] Preferably, the length of the cap-grabbing area is shorter than the length of the cap-screwing area.

[0063] Optionally, the centers of the rotating shaft 12, the rotary driver 31, and the capping arm 41 are not aligned, which can reduce the radius of the rotary frame 11, reduce the overall size of the machine, and reduce production costs. Furthermore, the staggered positions can be utilized for equipment maintenance, improving the maintainability of the equipment.

[0064] like Figure 4 Combine Figure 2 As shown, in the aseptic filling and capping, the capping device further includes a frame 5, which is rotatably and sealedly connected to the rotary frame 11. The outer side of the frame 5 is the production workshop space, and the inner side is the sterile space inside the machine, which can realize the capping operation in a sterile environment.

[0065] Optionally, a sealing groove 51 is provided on the surrounding frame 5, and a clamping member 52 is provided on the rotating frame 11, wherein a limiting arm is provided on the clamping member 52, wherein the limiting arm extends into the sealing groove 51, and the limiting arm and the inner wall of the sealing groove 51 are not released. Liquid is poured into the sealing groove 51, so that a sealed rotational connection between the rotating frame 11 and the surrounding frame 5 can be achieved, that is, the rotation of the rotating frame 11 is not affected, and the sealing of the connection part can be achieved.

[0066] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A capping device, characterized in that: It includes a support base, a capping mechanism, a lifting mechanism and a capping mechanism, and the capping mechanism includes: Capping arm (41); A capping head (42) connected to the lower end of the capping arm (41); An adapter assembly (43) connected to the upper end of the capping arm (41) for cooperating with the lifting mechanism; A pre-stressing assembly (44) comprises a slider (441), a spring seat (442) and a pre-stressing spring (443); the slider (441) is slidably mounted on the capping arm (41), and the slider (441) abuts against the adapter assembly (43); the spring seat (442) is fixedly mounted on the capping arm (41) and spaced apart from the slider (441); the upper end of the pre-stressing spring (443) abuts against the slider (441), and the lower end abuts against the spring seat (442); by providing the pre-stressing assembly (44), the capping head structure is eliminated; The support base includes a rotating frame (11) and a rotating shaft (12), wherein the rotating shaft (12) is fixedly connected to the rotating frame (11), and the rotating shaft (12) can drive the rotating frame (11) to rotate; the capping mechanism and the capping mechanism are both arranged on the rotating frame (11), and the lifting mechanism is rotatably arranged on the rotating shaft (12), the capping mechanism is used to drive the capping arm (41) to rotate, and the lifting mechanism is used to drive the capping arm (41) to lift; The capping mechanism comprises a rotary driver (31), a shaft sleeve (32) and a shaft sleeve limiting assembly (33); the shaft sleeve (32) is rotatably arranged on the rotary frame (11); the shaft sleeve limiting assembly (33) is used to limit the movement of the shaft sleeve (32) in its axial direction; the capping arm (41) is slidably arranged in the shaft sleeve (32), and the shaft sleeve (32) can drive the capping arm (41) to rotate; the rotary driver (31) is used to drive the shaft sleeve (32) to rotate, thereby driving the capping arm (41) to rotate; The center of the rotating shaft (12), the center of the rotary drive (31), and the center of the capping arm (41) are not located on the same straight line; The rotary cover arm (41) is inserted into the shaft sleeve (32), and a sliding groove (321) extending in a vertical direction is provided on the side wall of the shaft sleeve (32). A sliding key (411) is provided on the rotary cover arm (41), and the sliding key (411) is slidably provided in the sliding groove (321). The rotation of the shaft sleeve (32) can drive the rotary cover arm (41) to rotate, and the rotary cover arm (41) can be raised and lowered relative to the shaft sleeve (32).

2. The capping device according to claim 1, wherein: The lifting mechanism comprises a cylindrical cam (21), the cylindrical cam (21) being rotatably arranged on the rotating shaft (12), a lifting slot being provided on the cylindrical cam (21), one end of the adapter component (43) being rotatably slidably engaged with the lifting slot, and the other end of the adapter component (43) being rotatably connected to the upper end of the rotary cover arm (41).

3. The capping device according to claim 2, wherein: The lifting chute includes a cover grabbing area, a first transition area, a cover rotating area and a second transition area in sequence. The height of the cover grabbing area remains unchanged, the height of the cover rotating area remains unchanged, the height of the cover rotating area is greater than the height of the cover grabbing area, the first transition area is used for the transition from the cover grabbing area to the cover rotating area, and the second transition area is used for the transition from the cover rotating area to the cover grabbing area.

4. The capping device according to claim 2, wherein: The adapter assembly (43) includes a shaft bearing (431), a shaft bearing seat (432), a stop plate (433), a bearing (434) and a limit member (435), one end of the shaft bearing (431) is rotatably slidably matched with the lifting slide, and the other end thereof is fixedly connected to the upper end of the shaft bearing seat (432); the stop plate (433) is arranged on the shaft bearing seat (432) and can abut against the outer wall of the cylindrical cam (21); the lower end of the shaft bearing seat (432) is rotatably connected to the rotary cover arm (41) through the bearing (434); the limit member (435) is fixedly arranged on the upper end of the rotary cover arm (41), and the limit member (435) is used to make the rotary cover arm (41) and the shaft bearing seat (432) rise and fall synchronously.

5. The capping device according to claim 1, wherein: The capping mechanism further comprises a first gear (34) and a second gear (35) meshing with each other, wherein the first gear (34) is fixedly connected to the output end of the rotary driver (31), and the second gear (35) is fixedly sleeved on the shaft sleeve (32). The rotary driver (31) can drive the first gear (34) to drive the second gear (35) to rotate, thereby rotating the shaft sleeve (32).

6. The capping device according to claim 1, wherein: The rotary driver (31) is a servo motor.

7. The capping device according to claim 1, wherein: The capping device further comprises a surrounding frame (5), wherein the surrounding frame (5) is rotatably and sealedly connected to the rotary frame (11).

Images