CN213356909U

CN213356909U - Test tube bottle lid actuating mechanism

Info

Publication number: CN213356909U
Application number: CN202021955192.9U
Authority: CN
Inventors: 吴建康; 邓镭; 黄海艇
Original assignee: Shanghai Yangtai Medical Technology Co ltd
Current assignee: Shanghai Yangtai Medical Technology Co ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-06-04
Anticipated expiration: 2030-09-09

Abstract

The utility model relates to a test tube bottle lid actuating mechanism relates to a test tube that comprises bottle and bottle lid, its characterized in that: the actuating mechanism comprises a cover body swinging mechanism and a cover body turnover mechanism; the cover body swinging mechanism is used for enabling the cover body turnover mechanism to swing between a first limit position and a second limit position around a vertical axis; the cover body overturning mechanism comprises a bottle cap clamp which is driven by a cover body clamping actuating mechanism to selectively clamp the test tube bottle cap when the cover body overturning mechanism is at a first limit position, and an overturning actuating mechanism which drives the bottle cap clamp to rotate around a horizontal shaft when the cover body overturning mechanism is at a second limit position. The advantages are that: simple structure, the operation of being convenient for, intelligent degree improves, and is safe, can handle the multiunit test tube simultaneously.

Description

Test tube bottle lid actuating mechanism

Technical Field

The utility model relates to a chemistry survey equipment field especially relates to a test tube bottle lid actuating mechanism.

Background

In the analytical chemistry technical field, often relate to the processing of liquid, need frequent to open and close the operation to the test tube bottle lid, add reagent and react. Generally, the above working processes are all realized by manual operation, and there are disadvantages that:

(1) the manual operation has low working efficiency, and the sample processing is a time-consuming and labor-consuming process. During the process, a significant portion of the time is spent on reagent addition;

(2) easily cause the contaminated danger of experimental facilities and operating personnel.

(3) The test tubes need to be heated during part of the operation (e.g. Chemical Oxygen Demand (COD) indicates the digestion process of the chemical process) and may cause injury to the operator.

Therefore, the existing detection method is difficult to realize large-scale and large-batch efficient detection.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the structural shortcoming of prior art, provide a test tube bottle lid actuating mechanism, its simple structure, the operation of being convenient for, intelligent degree improves, and is safe, can handle the multiunit test tube simultaneously.

In order to achieve the above object, the embodiment of the present invention provides a test tube bottle cap actuating mechanism, which is realized by the following technical scheme:

the utility model provides a test tube bottle lid actuating mechanism, relates to a test tube that comprises bottle and bottle lid, its characterized in that: comprises a cover body swinging mechanism and a cover body turnover mechanism; the cover body swinging mechanism is used for enabling the cover body turnover mechanism to swing between a first limit position and a second limit position around a vertical axis; the cover body overturning mechanism comprises a clamp which is driven by a cover body clamping actuating mechanism to selectively clamp the test tube bottle cap when the cover body overturning mechanism is at a first limit position, and an overturning actuating mechanism which drives the bottle cap clamp to rotate around a horizontal shaft when the cover body overturning mechanism is at a second limit position.

The bottle cap clamp comprises a gripper support, a left gripper, a right gripper and a connecting rod mechanism, wherein the left gripper and the right gripper are symmetrically hinged to the gripper support, and the connecting rod mechanism drives the left gripper to release or grip; the connecting rod mechanism is connected with a sliding block and moves along with the movement of the sliding block; the cover body clamping executing mechanism comprises a cover body clamping driving motor, and a nut on a lead screw connected with the cover body clamping driving motor is fixedly connected with a sliding block of the bottle cap clamp, so that the sliding block of the bottle cap clamp is driven to slide in a corresponding guide rail.

The cover body swinging mechanism comprises a cover body rotating platform, a cover body swinging driving motor, a bottom plate, a first vertical plate and a second vertical plate, wherein the cover body swinging driving motor is rotatably arranged, the first vertical plate and the second vertical plate are arranged on the bottom plate, the cover body swinging driving motor drives the cover body rotating platform to rotate around the central shaft of the cover body swinging driving motor through a gear transmission mechanism, and the bottom plate is fixedly arranged on the rotating platform.

The turnover actuating mechanism comprises a rotating structural part and a turnover driving mechanism for driving the rotating structural part, the bottle cap clamp and the cap body clamping actuating mechanism are installed in the rotating structural part, and the left and right grippers of the bottle cap clamp are symmetrical to the axis of the rotating structural part.

Round holes are respectively formed in the first vertical plate and the second vertical plate, bearings are mounted on the round holes, the two bearings are coaxially arranged, and inner rings are sleeved on the rotating structural member; a cover body overturning driven wheel is arranged on the part of the rotating structural member between the first vertical plate and the second vertical plate, the overturning driving mechanism comprises a cover body overturning driving motor, a cover body overturning driving wheel is arranged on an output shaft of the cover body overturning driving motor, and a cover body overturning belt is wound between the cover body overturning driving wheel and the cover body overturning driven wheel and is tensioned; the rotating structural part is provided with a central through hole along the rotating axis of the rotating structural part, and the central through hole forms a guide rail of the upper sliding block of the bottle cap clamp.

The utility model has the advantages that: simple structure, the operation of being convenient for, intelligent degree improves, and is safe, can handle the multiunit test tube simultaneously.

Drawings

The above features and advantages of the present invention will become more apparent and readily appreciated from the following description of the exemplary embodiments thereof taken in conjunction with the accompanying drawings.

FIG. 1 is a schematic view of a test tube used in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a bottle body executing assembly 3, a bottle cap executing assembly 4 and a cap breaking executing mechanism 5 according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a cover breaking actuator according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram I of a bottle cap actuator assembly according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram II of the bottle cap actuator assembly according to the embodiment of the present invention;

fig. 6 is a cross-sectional view of a bottle cap actuator assembly according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of a bottle body actuating assembly according to an embodiment of the present invention;

fig. 8 is a cross-sectional view of a bottle body actuating assembly according to an embodiment of the present invention;

Detailed Description

The invention will be described in further detail below with reference to the accompanying drawings so as to facilitate understanding by those skilled in the art:

digestion colorimetric tube 1

Bottle cap 11 and bottle body 12

Frame 2

Top plate 21, bottom plate 22, side plate 23

Bottle body executing assembly 3

Bottle body lifting mechanism 31

A guide post 311, a driving motor 312 for lifting and lowering the bottle body, a driving wheel 313 for lifting and lowering the bottle body, a belt 314 for lifting and lowering the bottle body, a connecting rod 315, a rotary table 316, and a driven wheel 317 for lifting and lowering the bottle body

Bottle body rotating mechanism 32

Positioning tube 321

Window 3211

Bottle body clamp 322

A hand grip support 3221, a left hand grip 3222, a right hand grip 3223, a link mechanism 3224 and a slider 3225

Rotary actuator 323

Elevating plate 3231, vial turn table 3232, vial rotation driving motor 3233, and belt 3234

Bottle body clamping actuator 324

Bottle body clamping driving motor 3241, screw rod 3242 and nut 3243

Bottle cap actuating assembly 4

Lid body swing mechanism 41

A bottom plate 411, a first vertical plate 412, a second vertical plate 413, a cover body rotating table 414, a cover body swinging drive motor 415 and a gear transmission mechanism 416

Cover turnover mechanism 42

Bottle body clamping actuator 421

Cover body clamping drive motor 4211, screw rod 4212 and nut 4213

Bottle cap clamp 422

Gripper support 4221, left gripper 4222, right gripper 4223, link mechanism 4224 and slider 4225

Turnover actuator 423

Rotary structure 4231, cover turnover belt 4232, cover turnover driving motor 4233, bearing 4234, bearing 4235, cover turnover driven wheel 4236 and cover turnover driving wheel 4237

Cap breaking actuator 5

Thimble 51, thimble swing drive motor 52, swing arm 53

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

The embodiment provides a mechanism is punctureed to test tube bottle lid, and this mechanism is punctureed to test tube bottle lid relates to a purpose-made test tube, and referring to fig. 1, all can sealing the upper and lower end of this test tube 1 bottle lid 11 is fit on its bottle 12, and under test tube 1 delivery state, there is solid solute at the upper end of bottle lid 12 through the aluminium foil sealing.

The principle of using such a test tube will be described in detail below with reference to the structure of the device, and referring to fig. 2-8, the test tube cap actuating mechanism of this embodiment includes a frame 2, which has a rectangular parallelepiped shape and has a top plate 21, a bottom plate 22 and two side plates 23. The frame 2 is the main structure of the test tube bottle cap actuating mechanism and becomes the mounting platform of the bottle body actuating component 3, the bottle cap actuating component 4 and the cap breaking actuating mechanism 5.

Here, the bottle cap actuator 4 is used to cooperate with the bottle body actuator 3 and the cap breaking actuator 5, so the bottle cap actuator 4 will be briefly described in the following description to assist understanding of the purpose and concept of the actuator in this embodiment.

First, bottle body executing component 3

Referring to fig. 2, 7 and 8, the bottle body executing assembly 3 is used for implementing various motion commands to the bottle body 12, and includes a bottle body lifting mechanism 31 and a bottle body rotating mechanism 32. The bottle body elevating mechanism 31 is used to elevate or oscillate the bottle body rotating mechanism 32 as a whole.

Bottle body rotating mechanism 32

Referring to fig. 8 and 7, the bottle body rotating mechanism 32 includes a positioning tube 321, a bottle body clamp 322, a rotation actuator 323, and a bottle body clamp actuator 324. Wherein:

the positioning tube 321 is a hollow tubular structure, the upper end of the positioning tube is open, and the hollow cavity of the positioning tube can be used for vertically placing the digestion colorimetric tube 1. Two windows 3211 are symmetrically formed in the side wall of the positioning tube 321, and left and right grips of the bottle body clamp 322 are disposed at the two windows 3211.

The vial holder 322 is driven by the vial holding actuator 324 to selectively hold the vial 12 of the lysis cuvette 1 in the positioning tube 321. The bottle body clamp 322 comprises a guide rail pair composed of a sliding block 3225 and a guide rail, a grip support 3221, a left grip 3222 and a right grip 3223 symmetrically hinged to the grip support 3221, and a link mechanism 3224 for driving the left grip 3222 and the right grip 3223 to release or grip. The opposing sides of the left and

right grips

3222 and 3223 have grooves for receiving the bottles 12. The linkage 3224 is connected to the slider 3225 and moves with the slider 3225.

The bottle body clamping actuator 324 comprises a bottle body clamping driving motor 3241, a rotating shaft of the bottle body clamping driving motor 3241 is connected with a screw rod 3242, a nut 3243 is mounted on the screw rod 3242, and the nut 4243 is connected with the slider 3225 and drives the slider 3225 to slide in the corresponding guide rail. Therefore, when the bottle body clamping driving motor 3241 operates, the rotating shaft thereof drives the screw rod 3242 to rotate, and further drives the nut 3243 to vertically move on the screw rod 3242, and the slider 3225 moves along with the screw rod, so that the link mechanism 3224 pulls the left grip 3222 and the right grip 3223 to release or close.

The rotary actuator 323 is used to drive the positioning tube 321, the vial holder 322, and the vial holder actuator 324 to rotate around the axis of the cuvette 1 in the positioning tube 321.

The rotation actuator 323 includes a lifting plate 3231, a vial turn table 3232, and a vial rotation driving motor 3233. The bottle rotary table 3232 is vertically installed on the lifting plate 3231 in a rotatable manner, and the bottle rotary driving motor 3233 drives the rotary table 3232 to rotate through a belt 3234, which is a common driving means in the art and therefore will not be described herein again. The axis of the bottle body turn table 3232 is vertically arranged, and the positioning tube 321 is fixedly arranged on the central axis of the bottle body turn table 3232.

Bottle body lifting mechanism 31

Referring to FIGS. 7 and 8, the flask lifting mechanism 31 comprises four guide posts 311, a flask lifting driving motor 312, a link 315, a turntable 316, and a flask lifting belt 314 wound around between a flask lifting driving wheel 313 and a flask lifting driven wheel 317.

Four guide posts 311 are vertically arranged on the bottom plate 232 of the frame 23. The lifting plate 3231 is correspondingly provided with a hole sleeved on the guide post 311, movably arranged on the guide post 311, and vertically movable along the guide post 311.

The turntable 316 has a rotation shaft supported by a bearing of a holder on the base plate 232 and is rotatable in a vertical plane, and the turntable 316 is coaxially fixed to the bottle body elevating driven wheel 317 and is rotated under the driving of the bottle body elevating driven wheel

A bottle lifting driving wheel 313 is arranged on the rotating shaft of the bottle lifting driving motor 312, and the rotating shaft drives the rotating disc 316 to rotate through the transmission of a bottle lifting belt 314. The outer edge of the turntable 316 is hinged with a connecting rod 315, and the other end of the connecting rod 315 is hinged with a lifting plate 3231; thus, the bottle rotating mechanism 32 is driven by the connecting rod 315 to move up and down periodically along the guide post 311 as the rotating disc 316 rotates.

As can be seen from the above, when the bottle body rotating mechanism 32 needs to be lifted slowly, the bottle body lifting driving motor 312 is controlled to rotate at a low speed. When the bottle rotating mechanism 32 is required to oscillate, the bottle lifting driving motor 312 is controlled to rotate at a high speed.

Second, bottle cap execution assembly 4

Referring to fig. 4, 5 and 6, the bottle cap executing assembly 4 is disposed above the bottle body executing assembly 3, and is used for implementing various motion commands to the bottle cap 11, and includes a cap body swinging mechanism 41 and a cap body overturning mechanism 42. Wherein:

lid body swing mechanism 41

Referring to FIG. 5, the cover tilting mechanism 41 is adapted to intermittently tilt the cover tilting mechanism 42 about a vertical axis between a first limit position and a second limit position.

The lid swing mechanism 41 includes a lid turntable 414, a lid swing drive motor 415, a bottom plate 411, and a first vertical plate 412 and a second vertical plate 413 which are set up on the bottom plate 411.

The cover swing driving motor 415 is mounted on the lower surface of the top plate 231 of the frame 23, and the cover rotary table 414 is rotatably mounted on the upper surface of the top plate 231 of the frame 23 and is connected to an output shaft of the cover swing driving motor 415 through a gear transmission mechanism 416, so that the cover swing driving motor 415 drives the rotary table to rotate through the gear transmission mechanism 416 when operating. The axis of the rotating shaft of the cover rotating table 414 constitutes the vertical axis about which the cover turning mechanism 42 swings. Since the gear transmission structure is a common transmission means in the field, it is not described herein again.

The first vertical plate 412 is installed at a section of the bottom plate 411 and combined to form an L shape, and the second vertical plate 413 is installed in parallel to the first vertical plate 412 and installed at the middle of the bottom plate 411. The base plate 411 is fixed to the cover turntable 414.

Cover turnover mechanism 42

Referring to fig. 4-6, the cover turnover mechanism 42 is mounted on the first vertical plate 412 and the second vertical plate 413, and includes a bottle body clamping actuator 421, a bottle cap clamp 422, and a turnover actuator 423.

When the cap overturning mechanism 42 is at the second limit position, the overturning actuator 423 drives the bottle cap fixture 422 to rotate intermittently around a horizontal shaft. When the cover turning mechanism 42 is at the first limit position, the bottle cap clamp 422 is driven by the cover clamping actuator to selectively clamp the bottle cap 11 of the dissolution cuvette 1 in the positioning tube 321.

The inversion actuator 423 includes a rotation structure 4231, a cover inversion belt 4232, and a cover inversion driving motor 4233. Round holes are coaxially formed in the first vertical plate 412 and the second vertical plate 413, the diameter of each hole in the first vertical plate 412 is larger than that of each hole in the second vertical plate 413, a bearing 4234 (fixedly connected with the outer ring of the bearing 4234) is installed on each round hole in the first vertical plate 412, and a bearing 4235 (fixedly connected with the outer ring of the bearing 4235) is installed on each round hole in the second vertical plate 413. The bearing 4234 and the inner ring of the bearing 4235 are sleeved on the rotating structural member 4231 and fixedly connected. Accordingly, the rotation member 4231 is movably disposed on the first vertical plate 412 and the second vertical plate 413, and rotates around a horizontal axis. A cover turning driven wheel 4236 is mounted on the portion of the rotating structure 4231 between the first vertical plate 412 and the second vertical plate 413. The cover body turning driving motor 4233 is fixedly arranged on the side surface of the second vertical plate 413, an output shaft of the cover body turning driving motor 4237 is provided with a cover body turning driving wheel 4237, and a cover body turning belt 4232 is wound between the cover body turning driving wheel 4237 and the cover body turning driven wheel 4236 and tensioned. Therefore, when the cover inversion driving motor 4233 is started, the rotating structure 4231 is driven to rotate by the belt transmission.

The rotary component 4231 is provided with a central through hole along its axis of rotation, which central through hole constitutes a guiding rail.

The bottle cap clamp 422 comprises a sliding block 4225, a gripper support 4221, a left gripper 4222 and a right gripper 4223 which are symmetrically hinged on the gripper support 4221, and a link mechanism 4224 for driving the left gripper 4222 and the right gripper 4223 to release or grip.

The gripper bracket 4221 is fixed on the rotating structure 4231, specifically on the end surface of the rotating structure 4231 located outside the first vertical plate 412. The opposite sides of the left grip 4222 and the right grip 4223 are provided with grooves adapted to the bottle cap 11. The link mechanism 4223 is hinged to the left and

right grips

4222 and 4223, respectively, and is connected to the slider 4225 so as to move with the movement of the slider 4225. The slider 4225 is substantially cylindrical, is fitted in the central through hole of the rotary structure 4231, and forms a guide rail pair with the central through hole. The left grip 4222 and the right grip 4223 are arranged symmetrically to the axis of the rotational structure 4231.

The cover body clamping actuator 421 comprises a cover body clamping drive motor 4211, a rotating shaft of the cover body clamping drive motor 4211 is connected with a screw rod 4212, a nut 4213 is installed on the screw rod 4212, and the nut 4213 is connected with a sliding block 4225 and drives the sliding block 4225 to slide in a corresponding central through hole. Therefore, when the cover body clamping driving motor 4211 operates, the rotating shaft of the cover body drives the screw rod 4212 to rotate, further drives the nut 4213 to horizontally move on the screw rod 4212, and the sliding block 4225 moves along with the screw rod 4212, so that the link mechanism 4224 pulls the left gripper 4222 and the right gripper 4223 to release or close.

Third, break the cover actuator 5

Referring to fig. 3, the cap breaking actuator 5 includes a thimble 51, a swing arm 53, and a cap breaking swing actuator. The cover breaking swing actuator includes a pin swing driving motor 52, the pin swing driving motor 52 is fixedly disposed on the bottom surface of the top plate 231 of the frame 23, and an output shaft thereof extends upward to the top plate 231. One end of the swing arm 53 is connected to an output shaft of the pin swing drive motor 52, and the other end is fixed with the pin 51. The tip of the thimble 51 is arranged downwards, and the tip direction of the thimble 51 and the axial direction of the output shaft of the thimble swing driving motor 52 are both vertical to the length direction of the swing arm 53. Therefore, when the bottle rotating mechanism 32 descends, the needle swing driving motor 52 drives the swing arm 53 to swing, and the needle 51 can move to just above the positioning tube 321. When the bottle body rotating mechanism 32 is lifted again, the aluminum film of the bottle cap 11 of the extinction color comparison tube 1 in the positioning tube 321 can be just punctured.

The above embodiments are intended to illustrate the present invention and the embodiments in detail, but it can be understood by those skilled in the art that the above embodiments of the present invention are only one of the preferred embodiments of the present invention, and for space limitation, all embodiments can not be listed here one by one, and any implementation that can embody the technical solution of the present invention is within the protection scope of the present invention.

Claims

1. The utility model provides a test tube bottle lid actuating mechanism, relates to a test tube that comprises bottle and bottle lid, its characterized in that: comprises a cover body swinging mechanism and a cover body turnover mechanism; the cover body swinging mechanism is used for enabling the cover body turnover mechanism to swing between a first limit position and a second limit position around a vertical axis; the cover body overturning mechanism comprises a clamp which is driven by a cover body clamping actuating mechanism to selectively clamp the test tube bottle cap when the cover body overturning mechanism is at a first limit position, and an overturning actuating mechanism which drives the bottle cap clamp to rotate around a horizontal shaft when the cover body overturning mechanism is at a second limit position.

2. The test tube bottle cap actuating mechanism according to claim 1, wherein: the bottle cap clamp comprises a gripper support, a left gripper, a right gripper and a connecting rod mechanism, wherein the left gripper and the right gripper are symmetrically hinged to the gripper support, and the connecting rod mechanism drives the left gripper to release or grip; the connecting rod mechanism is connected with a sliding block and moves along with the movement of the sliding block; the cover body clamping executing mechanism comprises a cover body clamping driving motor, and a nut on a lead screw connected with the cover body clamping driving motor is fixedly connected with a sliding block of the bottle cap clamp, so that the sliding block of the bottle cap clamp is driven to slide in a corresponding guide rail.

3. The test tube bottle cap actuating mechanism according to claim 2, wherein: the cover body swinging mechanism comprises a cover body rotating platform, a cover body swinging driving motor, a bottom plate, a first vertical plate and a second vertical plate, wherein the cover body swinging driving motor is rotatably arranged, the first vertical plate and the second vertical plate are arranged on the bottom plate, the cover body swinging driving motor drives the cover body rotating platform to rotate around the central shaft of the cover body swinging driving motor through a gear transmission mechanism, and the bottom plate is fixedly arranged on the rotating platform.

4. The test tube bottle cap actuating mechanism according to claim 3, wherein: the turnover actuating mechanism comprises a rotating structural part and a turnover driving mechanism for driving the rotating structural part, the bottle cap clamp and the cap body clamping actuating mechanism are installed in the rotating structural part, and the left and right grippers of the bottle cap clamp are symmetrical to the axis of the rotating structural part.

5. The test tube bottle cap actuating mechanism according to claim 4, wherein: round holes are respectively formed in the first vertical plate and the second vertical plate, bearings are mounted on the round holes, the two bearings are coaxially arranged, and inner rings are sleeved on the rotating structural member; a cover body overturning driven wheel is arranged on the part of the rotating structural member between the first vertical plate and the second vertical plate, the overturning driving mechanism comprises a cover body overturning driving motor, a cover body overturning driving wheel is arranged on an output shaft of the cover body overturning driving motor, and a cover body overturning belt is wound between the cover body overturning driving wheel and the cover body overturning driven wheel and is tensioned; the rotating structural part is provided with a central through hole along the rotating axis of the rotating structural part, and the central through hole forms a guide rail of the upper sliding block of the bottle cap clamp.