CN214935883U

CN214935883U - Cap screwing device

Info

Publication number: CN214935883U
Application number: CN202023308534.0U
Authority: CN
Inventors: 黄龙强; 陈建辉; 宋俊杰; 张聪敏
Original assignee: Guangzhou Tech Long Packaging Machinery Co Ltd
Current assignee: Guangzhou Tech Long Packaging Machinery Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-11-30
Anticipated expiration: 2030-12-31

Abstract

The utility model relates to a spiral cover technical field especially relates to a spiral cover device. The utility model provides a cap screwing device, which comprises a supporting seat, a cap screwing mechanism, a cap grabbing mechanism and a lifting mechanism, wherein the supporting seat comprises a revolving frame and a rotating shaft, the rotating shaft is fixedly connected with the revolving frame, and the rotating shaft can drive the revolving frame to rotate; the cover screwing mechanism comprises a rotary driver, a shaft sleeve and a shaft sleeve limiting assembly, the shaft sleeve is rotatably arranged on the revolving frame, the shaft sleeve limiting assembly is used for limiting the movement of the shaft sleeve in the axial direction of the shaft sleeve, and the rotary driver is arranged on the revolving frame and used for driving the shaft sleeve to rotate; the cover grabbing mechanism comprises a cover rotating arm and a cover grabbing head, the lower end of the cover rotating arm is connected with the cover grabbing head, and the upper end of the cover rotating arm is connected with the lifting mechanism. Because spiral cover arm slidable wears to establish in the axle sleeve, and the axle sleeve can drive spiral cover arm and rotate, can drive spiral cover arm lift alone when lift actuating mechanism, and spiral cover mechanism is not influenced and can drive spiral cover arm and rotate, reduces elevating system's consumption.

Description

Cap screwing device

Technical Field

The utility model relates to a spiral cover technical field especially relates to a spiral cover device.

Background

In the liquid packaging industry, screw-on capping devices are used to fasten bottle caps to bottles filled with products. The cap screwing device generally comprises a cap grabbing mechanism, a cap screwing mechanism and a lifting mechanism, wherein the cap grabbing mechanism is used for grabbing the bottle cap; the cap screwing mechanism is used for driving the cap grabbing mechanism to rotate so as to screw the bottle cap on the bottle. Because the height of the cap grabbing mechanism is different between the bottle cap grabbing time and the bottle cap screwing time, the lifting mechanism is required to drive the cap grabbing mechanism to lift, and therefore the bottle cap grabbing operation and the bottle cap screwing operation can be achieved.

In the existing cap screwing device, in order to ensure that the cap grabbing mechanism can drive the cap grabbing mechanism to rotate when the cap grabbing mechanism is at different heights, the lifting mechanism is generally set to be capable of driving the cap grabbing mechanism and the cap screwing mechanism to lift simultaneously. Therefore, mechanisms such as a guide rod, a sliding sleeve, a drag chain and the like required by the lifting motion of the cover grabbing mechanism and the cover screwing mechanism are required to be arranged respectively, on one hand, the requirement on the bearing capacity of the lifting mechanism is high, and the power consumption of the lifting mechanism is high; on the other hand, the cap screwing device is inconvenient to operate and maintain, and the instability risk of the whole cap screwing device is large.

Therefore, a need exists for a screw cap device that solves the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a spiral cover device, elevating system can the individual drive grab the lift of lid mechanism, reduces elevating system's consumption, and does not influence spiral cover mechanism drive and grab lid mechanism and screw up the bottle lid, complete machine simple structure, the operation maintenance of being convenient for.

In order to realize the purpose, the following technical scheme is provided:

a capping apparatus comprising:

the supporting seat comprises a rotating frame and a rotating shaft, the rotating shaft is fixedly connected with the rotating frame, and the rotating shaft can drive the rotating frame to rotate;

the cover screwing mechanism comprises a rotary driver, a shaft sleeve and a shaft sleeve limiting assembly, wherein the shaft sleeve is rotatably arranged on the revolving frame, the shaft sleeve limiting assembly is used for limiting the movement of the shaft sleeve in the axial direction of the shaft sleeve, and the rotary driver is arranged on the revolving frame and is used for driving the shaft sleeve to rotate;

the cover grabbing mechanism comprises a cover screwing arm and a cover grabbing head, the cover screwing arm is slidably arranged in the shaft sleeve in a penetrating mode, the shaft sleeve can drive the cover screwing arm to rotate, and the lower end of the cover screwing arm is connected with the cover grabbing head;

and the lifting mechanism is connected with the upper end of the cap screwing arm and is used for driving the cap screwing arm to lift.

As the alternative of spiral cover device, it still includes the spiral cover head to grab lid mechanism, the spiral cover head includes connecting sleeve, sliding sleeve and pre-compaction spring, the fixed cover of connecting sleeve is established the lower extreme of spiral cover arm, sliding sleeve slidable ground cover is established on the connecting sleeve, pre-compaction spring's upper end with connecting sleeve looks butt, its lower extreme with sliding sleeve looks butt, it fixes to grab the lid head sliding sleeve is last.

As the alternative of spiral cover device, the spiral cover head still includes slider, guide bar, ejector pad and clear lid ejector pin, be provided with the guide way on the lower extreme cavity of spiral cover arm and the lateral wall, the guide bar traversing the guide way, the both ends of guide bar are provided with the slider, the ejector pad cover is established set up on the guide bar and slidable ground in the spiral cover arm, clear lid ejector pin slidable ground sets up in the connecting sleeve, the ejector pad can with clear lid ejector pin looks butt, in order to promote clear lid ejector pin stretches into in grabbing the cover head.

As an alternative to the capping device, the centre of the spindle, the centre of the rotary drive and the centre of the capping arm are not located on the same line.

As an alternative to the capping device, the rotary drive is a servo motor.

As an alternative scheme of the cap screwing device, the cap screwing arm is arranged in the shaft sleeve in a penetrating mode, a sliding groove extending in the vertical direction is formed in the side wall of the shaft sleeve, a sliding key is arranged on the cap screwing arm, the sliding key is arranged in the sliding groove in a sliding mode, the shaft sleeve rotates to drive the cap screwing arm to rotate, and the cap screwing arm can lift relative to the shaft sleeve.

As an alternative to the cap screwing device, the lifting mechanism includes a cylindrical cam, the cylindrical cam is rotatably disposed on the rotating shaft, a lifting chute is disposed on the cylindrical cam, and the cap screwing arm can slide relative to the lifting chute.

As an alternative scheme of the cap screwing device, the lifting chute sequentially comprises a cap grabbing area, a first transition area, a cap screwing area and a second transition area, the height of the cap grabbing area is kept unchanged, the height of the cap screwing area is larger than that of the cap grabbing area, the first transition area is used for the cap grabbing area to transition to the cap screwing area, and the second transition area is used for the cap screwing area to transition to the cap grabbing area.

As an alternative of the cap screwing device, the cap grabbing mechanism further comprises a switching assembly, one end of the switching assembly is in rotatable sliding fit with the lifting chute, the other end of the switching assembly is in rotatable connection with the cap screwing arm, and the switching assembly can drive the cap screwing arm to lift along with the lifting chute.

As an alternative of the cap screwing device, the switching assembly comprises a shaft bearing, a shaft bearing seat, a rotation stopping plate, a bearing and a limiting member, one end of the shaft bearing is rotatably and slidably matched with the lifting chute, and the other end of the shaft bearing is fixedly connected with the upper end of the shaft bearing seat; the rotation stopping plate is arranged on the bearing seat with the shaft and can be abutted against the outer wall of the cylindrical cam; the lower end of the bearing seat with the shaft is rotationally connected with the spiral cover arm through the bearing; the locating part is fixedly arranged at the upper end of the spiral cover arm, and the locating part is used for enabling the spiral cover arm to synchronously lift with the bearing seat with the shaft.

As an alternative of the cap screwing device, the cap screwing mechanism further comprises a first gear and a second gear which are meshed with each other, the first gear is fixedly connected with the output end of the rotary driver, 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 as to enable the shaft sleeve to rotate.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a spiral cover device, including supporting seat, spiral cover mechanism, grab lid mechanism and elevating system, through set up the axle sleeve on the supporting seat, utilize the spacing subassembly of axle sleeve to carry on spacingly to the axial of axle sleeve to grab lid mechanism through the axle sleeve drive and screw up the bottle lid, can realize that elevating system individual drive grabs lid mechanism and go up and down, spiral cover mechanism position keeps unchangeable, and does not influence the drive of spiral cover mechanism and grab lid mechanism, reduces the elevating system consumption, complete machine simple structure, the operation of being convenient for is maintained.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a side sectional view of a cap screwing device according to an embodiment of the present invention;

fig. 2 is a top view of a cap screwing device provided in an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a cover grabbing mechanism provided in the embodiment of the present invention;

fig. 4 is a schematic structural view of a screw-cap head according to an embodiment of the present invention.

Reference numerals:

11-a turret; 111-shaft sleeve limit sleeve; 12-a rotating shaft;

21-a cylindrical cam;

31-a rotary drive; 32-shaft sleeve; 321-a chute; 33-a shaft sleeve limiting component; 34-a first gear; 35-a second gear;

41-swivel cover arm; 411-a feather key; 412-a guide slot; 42-a cap grasping head; 43-a transition assembly; 431-a shaft bearing; 432-a journaled bearing mount; 433-rotation stopping plate; 434-bearings; 435-a limit stop; 436-bearing gland; 44-a screw-on head; 441-a connecting sleeve; 442-a sliding sleeve; 443-a pre-compression spring; 444-spring seat; 445-connecting means; 446-a slider; 447-a guide bar; 448-a push block; 449-cover cleaning ejector rod; 4410-a return spring; 4411 — an upper limit block; 4412-lower limit block.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution of the present invention is further described below by referring to the drawings and the detailed description.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1-4, the present embodiment provides a capping device, which includes a supporting seat, a capping mechanism, a cap grabbing mechanism, and a lifting mechanism, wherein the supporting seat includes a revolving frame 11 and a rotating shaft 12, the rotating shaft 12 is fixedly connected to the revolving frame 11, and the rotating shaft 12 can drive the revolving frame 11 to rotate; the cap screwing mechanism comprises a rotary driver 31, a shaft sleeve 32 and a shaft sleeve limiting assembly 33, wherein the shaft sleeve 32 is rotatably arranged on the revolving frame 11, the shaft sleeve limiting assembly 33 is used for limiting the movement of the shaft sleeve 32 in the axial direction of the shaft sleeve, and the rotary driver 31 is arranged on the revolving frame 11 and is used for driving the shaft sleeve 32 to rotate; the cover grabbing mechanism comprises a cover screwing arm 41 and a cover grabbing head 42, the lower end of the cover screwing arm 41 is connected with the cover grabbing head 42, and the upper end of the cover screwing arm 41 is connected with the lifting mechanism. Because the spiral cover arm 41 is slidably arranged in the shaft sleeve 32 in a penetrating manner, and the shaft sleeve 32 can drive the spiral cover arm 41 to rotate, when the lifting driving mechanism can independently drive the spiral cover arm 41 to lift, the spiral cover mechanism is not affected and can drive the spiral cover arm 41 to rotate, and the power consumption of the lifting mechanism is reduced.

During work, the rotating shaft 12 drives the revolving frame 11 to drive the revolving cover arm 41 to revolve for station exchange, the lifting mechanism drives the revolving cover arm 41 to independently lift so as to grab bottle caps or prepare to screw the bottle caps at different stations, and the rotary driver 31 drives the shaft sleeve 32 to rotate so as to drive the revolving cover arm 41 to rotate for screwing operation.

In addition, the cap screwing mechanism does not need to follow the cap screwing arm 41 to do lifting motion together, and the mechanisms such as a guide rod, a sliding sleeve, a motor mounting seat, a towing cable and a towing chain which are required by the lifting motion are saved, so that the production cost is saved, the risk of instability of the equipment caused by too many mechanisms is reduced, and the operation and maintenance performance of the equipment is improved.

Preferably, the upper and lower ends of the fitting portion of the cap arm 41 and the sleeve 32 are respectively provided with sliding bearings to ensure that the cap arm 41 can directionally slide along the sleeve 32.

The shaft sleeve limiting assembly 33 comprises a ball bearing and a ball bearing limiting seat, a shaft sleeve limiting sleeve 111 is arranged on the revolving frame 11, the shaft sleeve 32 is rotatably connected with the shaft sleeve limiting sleeve 111 through the ball bearing, and the ball bearing axially limits the shaft sleeve 32. In order to limit the ball bearing, a bearing limiting seat is fixed on the revolving frame 11. In addition, the shaft sleeve 32 is connected with the bearing limit seat in a sealing mode through a sealing piece.

In order to realize that the shaft sleeve 32 can drive the cap rotating arm 41 to rotate and enable the cap rotating arm 41 to lift relative to the shaft sleeve 32, as shown in fig. 1 and fig. 3, the cap rotating arm 41 is inserted into the shaft sleeve 32, a sliding groove 321 extending in the vertical direction is arranged on the side wall of the shaft sleeve 32, a sliding key 411 is arranged on the cap rotating arm 41, the sliding key 411 is slidably arranged in the sliding groove 321, the shaft sleeve 32 can drive the cap rotating arm 41 to rotate by rotating, and the cap rotating arm 41 can lift relative to the shaft sleeve 32.

Alternatively, the lifting mechanism includes a cylindrical cam 21, the cylindrical cam 21 is rotatably disposed on the rotating shaft 12, a lifting slide slot is disposed on the cylindrical cam 21, and the spiral cover arm 41 can slide relative to the lifting slide slot. Specifically, when the revolving frame 11 is driven by the revolving shaft 12 to revolve the capping arm 41, the capping arm 41 can slide relative to the lifting slide groove of the cylindrical cam 21 and can be lifted and lowered as the lifting slide groove is lifted and lowered.

Preferably, the rotary drive 31 is a servo motor. The servo motor can realize electric parametric control of the torque force, the rotating speed and the like of the rotary cover, and the automation level of the equipment is improved. By utilizing the characteristic of high repetition precision of the servo motor, after the equipment is produced or maintained, the torque output can be kept stable for a long time after one-time torque correction is carried out.

Alternatively, the number of the cover grasping mechanisms is plural, a plurality of the cover grasping mechanisms are arranged around the periphery of the rotating shaft 12, and each cover grasping mechanism is provided with one cover screwing mechanism. The cover grabbing mechanisms are driven by a cylindrical cam 21 to realize the lifting of the cover rotating arm 41.

In order to realize the large transmission ratio transmission between the rotary driver 31 and the shaft sleeve 32, save the speed reducer and reduce the cost, the cap screwing mechanism further comprises a first gear 34 and a second gear 35 which are meshed with each other, the first gear 34 is fixedly connected with the output end of the rotary driver 31, the second gear 35 is fixedly sleeved on the shaft sleeve 32, and the rotary driver 31 can drive the first gear 34 to drive the second gear 35 to rotate so as to enable the shaft sleeve 32 to rotate. Because the speed of the rotary cover is low (generally 250-400 rpm), the output torque of the rotary servo motor can be reduced by a large transmission ratio, so that the servo motor approaches or reaches a rated rotating speed, the power consumption of the servo motor is reduced, and energy conservation is realized.

Exemplarily, as shown in fig. 2, the lifting chute includes a cover grasping area, a first transition area, a cover rotating area and a second transition area in sequence, the height of the cover grasping area is kept unchanged, the height of the cover rotating area is greater than the height of the cover grasping area, the first transition area is used for the cover grasping area to transition to the cover rotating area, and the second transition area is used for the cover rotating area to transition to the cover grasping area.

Preferably, the length of the cap grasping area is less than that of the cap screwing area.

Alternatively, the center of the rotary shaft 12, the center of the rotary driver 31, and the center of the swing arm 41 are not located on the same line, and the radius size of the swing frame 11 can be reduced, reducing the overall volume and the production cost. In addition, the staggered positions can be used for maintaining equipment, and the maintainability of the equipment is improved.

In order to isolate the rotation of the cap screwing arm 41, the cap grabbing mechanism further comprises a switching assembly 43, one end of the switching assembly 43 is in rotating sliding fit with the lifting chute, the other end of the switching assembly 43 is in rotating connection with the cap screwing arm 41, and the switching assembly 43 can drive the cap screwing arm 41 to lift along with the lifting chute.

Alternatively, as shown in fig. 3 in conjunction with fig. 1, the adapting assembly 43 includes a shaft bearing 431, a shaft bearing seat 432, a rotation stopping plate 433, a bearing 434 and a limiting member 435, wherein one end of the shaft bearing 431 is rotatably and slidably engaged with the lifting chute, and the other end thereof is fixedly connected with the upper end of the shaft bearing seat 432; the rotation stopping plate 433 is arranged on the bearing seat 432 with the shaft and can be abutted against the outer wall of the cylindrical cam 21; the lower end of the bearing seat 432 with the shaft is rotatably connected with the spiral cover arm 41 through a bearing 434; the limiting member 435 is fixedly disposed at the upper end of the spiral cover arm 41, and the limiting member 435 is used for synchronously lifting and lowering the spiral cover arm 41 and the shaft bearing block 432.

In operation, when the revolving frame 11 drives the cover grabbing mechanism to rotate, the cylindrical cam 21 is not moved, and the shaft bearing 431 is in rotatable sliding fit with the lifting chute on the cylindrical cam 21, so as to ensure that the shaft bearing 431 can smoothly slide along the lifting chute; the limiting member 435 is used for ensuring that the revolving cover arm 41 can be driven to ascend and descend when the bearing seat 432 with the shaft ascends and descends; when the rotary driver 31 drives the shaft sleeve 32 to drive the cap arm 41 to rotate, the bearing 434 is used for isolating the rotation of the cap arm 41, so as to prevent the shaft bearing seat 432 from rotating along with the cap arm 41, and ensure the stability of the adapter assembly 43.

In order to limit the bearing 434, the adapter assembly 43 further includes a bearing cover 436, the bearing cover 436 is detachably fixed on the belt shaft bearing seat 432, the upper end of the bearing 434 abuts against the belt shaft bearing seat 432, and the lower end abuts against the bearing cover 436.

As shown in fig. 4, the cap grabbing mechanism further includes a cap screwing head 44, the cap screwing head 44 includes a connecting sleeve 441, a sliding sleeve 442, and a pre-pressing spring 443, the connecting sleeve 441 is fixedly sleeved on the lower end of the cap screwing arm 41, the sliding sleeve 442 is slidably sleeved on the connecting sleeve 441, the pre-pressing spring 443 abuts against the connecting sleeve 441 at the upper end thereof, abuts against the sliding sleeve 442 at the lower end thereof, and the cap grabbing head 42 is fixed on the sliding sleeve 442. The prepressing spring 443 can realize functions of adjusting prepressing force of the screwing cap, protecting retraction of the askew cap and the like, effectively improve the torque precision of the screwing cap, and prevent machines and bottles from being damaged due to special reasons such as askew cap and the like.

In order to facilitate the installation of the pre-pressing spring 443, the capping head 44 further includes a spring seat 444, the spring seat 444 is fixedly sleeved on the sliding sleeve 442, the upper end of the pre-pressing spring 443 abuts against the connecting sleeve 441, and the lower end of the pre-pressing spring 443 abuts against the spring seat 444. Illustratively, the spring seat 444 is threaded externally of the sliding sleeve 442.

In order to facilitate the installation of the cap grabbing head 42, the cap screwing head 44 further comprises a connecting piece 445, the connecting piece 445 is fixed on the sliding sleeve 442, an internal threaded hole is formed in the connecting piece 445, external threads are formed on the cap grabbing head 42, and the cap grabbing head 42 is in threaded connection with the connecting piece 445.

After the bottle cap is screwed, in order to separate the bottle cap from the cap grabbing head 42, the cap screwing head 44 further comprises a sliding block 446, a guide rod 447, a push block 448 and a cap clearing ejector rod 449, the lower end of the cap screwing arm 41 is hollow, a guide groove 412 is formed in the side wall of the cap screwing arm 41, the guide rod 447 transversely penetrates through the guide groove 412, the sliding block 446 is arranged at two ends of the guide rod 447, the push block 448 is sleeved on the guide rod 447 and slidably arranged in the cap screwing arm 41, the cap clearing ejector rod 449 is slidably arranged in the connecting sleeve 441, and the push block 448 can abut against the cap clearing ejector rod 449 to push the cap clearing ejector rod 449 to extend into the cap grabbing head 42.

In operation, when the switching assembly 43 drives the cap rotating arm 41 to move upwards along the lifting chute, the cap rotating head 44 moves upwards along with the cap rotating arm 41, when the sliding block 446 in the cap rotating head 44 abuts against the bottom surface of the revolving frame 11, the sliding block 446 keeps the height unchanged under the action of the revolving frame 11 along with the continuous upward movement of the cap rotating arm 41, and meanwhile, the sliding block 446 drives the guide rod 447, the push block 448 pushes the cap cleaning ejection rod 449 to move downwards, so that the cap cleaning ejection rod 449 extends into the cap grabbing head 42 to eject the bottle cap.

In order to facilitate the resetting of the top cover of the cover cleaning ejection rod 449, the cap screwing head 44 further comprises a reset spring 4410, an upper limit block 4411 and a lower limit block 4412, the upper limit block 4411 is in threaded connection with the upper end of the connecting sleeve 441, the lower limit block 4412 is in threaded connection with the lower end of the connecting sleeve 441, the cover cleaning ejection rod 449 is arranged in the upper limit block 4411 and the lower limit block 4412 in a penetrating manner, the upper limit block 4411 and the lower limit block 4412 form an accommodating cavity, the reset spring 4410 is sleeved outside the cover cleaning ejection rod 449 and is positioned in the accommodating cavity, the upper end of the reset spring 4410 is abutted against the upper limit block 4411, and the lower end of the reset spring 4410 is abutted against the lower limit block 4412. When the slider 446 is not acted upon by external force, the return spring 4410 enables the lid lift bar 449 to move upwardly to retract into the sliding sleeve 442.

In the aseptic filling and sealing, the cap screwing device further comprises a surrounding frame which is rotatably and hermetically connected with the revolving frame 11. The outer side of the enclosing frame is a production workshop space, the inner side of the enclosing frame is a sterile space inside the machine, and the cap screwing operation can be carried out in a sterile environment.

Optionally, a sealing groove is formed in the enclosing frame, a clamping piece is arranged on the rotary frame 11, a limiting arm is arranged on the clamping piece and extends into the sealing groove, the limiting arm is not released from the inner wall of the sealing groove, liquid is filled into the sealing groove, the rotary frame 11 and the enclosing frame can be in sealed rotary connection, namely the rotary frame 11 is not influenced in rotation, and the sealing of the connecting portion can be achieved.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A capping apparatus, comprising:

the supporting seat comprises a rotary frame (11) and a rotating shaft (12), the rotating shaft (12) is fixedly connected with the rotary frame (11), and the rotating shaft (12) can drive the rotary frame (11) to rotate;

the cap screwing 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 for limiting the movement of the shaft sleeve (32) in the axial direction of the shaft sleeve, and the rotary driver (31) is arranged on the rotary frame (11) and is used for driving the shaft sleeve (32) to rotate;

the cover grabbing mechanism comprises a cover screwing arm (41) and a cover grabbing head (42), the cover screwing arm (41) is slidably arranged in the shaft sleeve (32) in a penetrating mode, the shaft sleeve (32) can drive the cover screwing arm (41) to rotate, and the lower end of the cover screwing arm (41) is connected with the cover grabbing head (42);

and the lifting mechanism is connected with the upper end of the rotary cover arm (41) and is used for driving the rotary cover arm (41) to lift.

2. The capping device according to claim 1, wherein the cap-grasping mechanism further comprises a capping head (44), the capping head (44) comprises a connecting sleeve (441), a sliding sleeve (442) and a pre-pressing spring (443), the connecting sleeve (441) is fixedly sleeved on the lower end of the capping arm (41), the sliding sleeve (442) is slidably sleeved on the connecting sleeve (441), the pre-pressing spring (443) abuts against the connecting sleeve (441) at the upper end and abuts against the sliding sleeve (442) at the lower end, and the capping head (42) is fixed on the sliding sleeve (442).

3. The cap screwing device according to claim 2, wherein the cap screwing head (44) further comprises a sliding block (446), a guide rod (447), a push block (448) and a cap cleaning ejection rod (449), the lower end of the cap screwing arm (41) is hollow, a guide groove (412) is formed in the side wall of the cap screwing arm, the guide rod (447) transversely penetrates through the guide groove (412), the sliding block (446) is arranged at two ends of the guide rod (447), the push block (448) is sleeved on the guide rod (447) and slidably arranged in the cap screwing arm (41), the cap cleaning ejection rod (449) is slidably arranged in the connecting sleeve (441), and the push block (448) can abut against the cap cleaning ejection rod (449) to push the cap cleaning ejection rod (449) to extend into the cap grabbing head (42).

4. A capping device according to claim 1, wherein the rotary drive (31) is a servo motor.

5. The cap screwing device of claim 1, wherein the cap screwing arm (41) is arranged in the shaft sleeve (32) in a penetrating way, a sliding groove (321) extending along the vertical direction is arranged on the side wall of the shaft sleeve (32), a sliding key (411) is arranged on the cap screwing arm (41), the sliding key (411) is arranged in the sliding groove (321) in a sliding way, the shaft sleeve (32) can drive the cap screwing arm (41) to rotate by rotating, and the cap screwing arm (41) can lift relative to the shaft sleeve (32).

6. The capping device according to claim 1, wherein the lifting mechanism comprises a cylindrical cam (21), the cylindrical cam (21) is rotatably disposed on the rotating shaft (12), a lifting chute is disposed on the cylindrical cam (21), and the capping arm (41) is slidable relative to the lifting chute.

7. The cap screwing device of claim 6, wherein the lifting chute comprises a cap screwing region, a first transition region, a cap screwing region and a second transition region in sequence, the height of the cap screwing region is kept unchanged, the height of the cap screwing region is larger than that of the cap screwing region, the first transition region is used for the cap screwing region to transit to the cap screwing region, and the second transition region is used for the cap screwing region to transit to the cap screwing region.

8. The capping device according to claim 6, wherein the cap-grabbing mechanism further comprises an adaptor assembly (43), one end of the adaptor assembly (43) is rotatably and slidably engaged with the lifting chute, and the other end of the adaptor assembly is rotatably connected with the capping arm (41), and the adaptor assembly (43) can drive the capping arm (41) to lift and lower along with the lifting chute.

9. The cap screwing device according to claim 8, wherein the switching assembly (43) comprises a bearing (431) with a shaft, a bearing seat (432) with a shaft, a rotation stopping plate (433), a bearing (434) and a limiting member (435), one end of the bearing (431) with a shaft is rotatably and slidably matched with the lifting chute, and the other end of the bearing (432) with a shaft is fixedly connected with the upper end of the bearing seat (432) with a shaft; the rotation stopping plate (433) is arranged on the bearing seat (432) with the shaft and can be abutted against the outer wall of the cylindrical cam (21); the lower end of the bearing seat (432) with the shaft is rotatably connected with the rotary cover arm (41) through the bearing (434); the limiting piece (435) is fixedly arranged at the upper end of the swivel-cap arm (41), and the limiting piece (435) is used for enabling the swivel-cap arm (41) and the bearing seat (432) with the shaft to synchronously lift.

10. The cap screwing device according to claim 1, wherein the cap screwing mechanism further comprises a first gear (34) and a second gear (35) which are meshed with each other, the first gear (34) is fixedly connected with the output end of the rotary driver (31), the second gear (35) is fixedly sleeved on the shaft sleeve (32), and the rotary driver (31) can drive the first gear (34) to drive the second gear (35) to rotate so as to enable the shaft sleeve (32) to rotate.