A lid opening and closing device with precise positioning and controllable torque

Abstract

The present application discloses an opening and closing cover device with precise positioning and controllable torque, comprising an opening and closing cover assembly and a positioning assembly that are movably connected. The opening and closing cover assembly comprises a rotating handle, a reciprocating screw and a cover opening mechanism, the rotating handle and the cover opening mechanism are respectively connected to the two ends of the reciprocating screw, and a spring is sleeved at the connection between the bottom end of the reciprocating screw and the cover opening mechanism; the cover opening mechanism comprises a sliding sleeve, a sliding sleeve and a screw-on cap. The sliding sleeve is connected to the bottom end of the reciprocating screw, and a wave spring is sleeved on the upper end of the sliding sleeve, and the wave spring abuts against the spring. A plurality of conical holes are provided on the bottom surface of the sliding sleeve, and a plurality of cylindrical holes are provided on the top surface of the screw-on cap corresponding to the conical holes. Steel balls are built in the cylindrical holes, and the upper ends of the steel balls are placed in the conical holes. An opening notch is provided at the bottom end of the screw-on cap. During normal operation, the wave spring presses the sliding sleeve, and the sliding sleeve presses the steel ball. When the torque is too large, the sliding sleeve cannot press the steel ball and is pushed open by the steel ball, thereby slipping, thereby realizing torque control.

Description

Technical Field

[0001] The present application relates to the technical field of opening and closing cover devices, and specifically to an opening and closing cover device with precise positioning and controllable torque. Background Art

[0002] In the nuclear industry, nuclear reactions must be carried out in a closed environment due to the presence of radioactivity and toxicity during the reaction process. The corresponding operations must be completed purely mechanically and automatically during the reaction process, and human labor cannot be directly involved. In nuclear industry production, sample bottles need to be opened and closed. The entire process is operated by a robot and an opening and closing device. The robot needs to transfer the sample bottle to the opening and closing device for opening and closing the cap, and then clamp it for the next step. Therefore, the opening and closing device needs to cooperate with the robot to accurately position and quickly complete the opening and closing of the cap, and excessive force should not be used during the opening and closing process, resulting in failure of the opening and closing of the cap or damage to the sample bottle. Especially when closing the cap, if the opening and closing force is too great, the sample bottle will be directly damaged. The current opening and closing device cannot achieve accurate positioning, and it is difficult to accurately control the stroke and force of the operation. Therefore, a opening and closing device that can accurately position and control torque is highly anticipated by nuclear industry production.

[0003] The invention with application number 202011294174.5 discloses a mechanical rotary chemical hazardous material sample bottle opening and closing device and a method of use. The auxiliary positioning device is provided with a centering device at one end close to the guide device. The auxiliary positioning device includes a push-pull mechanism and a clamping device; the centering device includes two groups of fixed seats forming a 120° angle, a first resistance plate installed on one group of fixed seats, and a second resistance plate installed on the other group of fixed seats. The outer end face of the first resistance plate is a plane, and the outer end face of the second resistance plate is an arc surface. The present invention completes the smooth entry of the sample bottle into the opening and closing position through the centering device; the limiting device realizes the lifting and lowering of the rotating device through the connecting rod device. When the sample bottle needs to be taken out, the rotating device is raised without interfering with the action of the manipulator; the gear rack structure of the rotating device completes the clamping and loosening of the bottle body of the sample bottle, which is safe and reliable. However, the opening and closing process of the device requires first putting the bottle in place, then pressing it, lowering the opening mechanism, pulling the handle to open the lid, raising the opening mechanism, and sending the bottle away before taking the bottle away, so the operation is very inconvenient. Summary of the Invention

[0004] The present application provides an opening and closing cover device with precise positioning and controllable torque, which solves the technical problems of existing opening and closing cover devices that cannot achieve precise positioning, are difficult to accurately control the operating stroke and force, and are inconvenient to operate.

[0005] The technical solution adopted by the present application to solve its technical problems is: to provide an opening and closing cover device with precise positioning and controllable torque, including: an opening and closing cover assembly and a positioning assembly that are movably connected, the opening and closing cover assembly including a rotating handle, a reciprocating screw and a cover opening mechanism, the rotating handle and the cover opening mechanism are respectively connected to the two ends of the reciprocating screw, and a spring is sleeved at the connection between the bottom end of the reciprocating screw and the cover opening mechanism; the cover opening mechanism includes a sliding sleeve, a sliding sleeve and a screw-on cap, the sliding sleeve is connected to the bottom end of the reciprocating screw, the wave spring is sleeved on the upper end of the sliding sleeve, the wave spring abuts against the spring, a plurality of conical holes are opened on the bottom surface of the sliding sleeve, a plurality of cylindrical holes are opened on the top surface of the screw-on cap corresponding to the conical holes, steel balls are built in the cylindrical holes, the upper ends of the steel balls are placed in the conical holes, and a cover opening slot is opened at the bottom end of the screw-on cap.

[0006] The positioning component of the opening and closing cover device with precise positioning and controllable torque can realize the precise pushing of the sample bottle to the corresponding opening notch of the opening and closing cover component for placement, and the opening and closing cover operation is performed by the opening and closing cover component. After the sample bottle is precisely pushed to the opening and closing cover component, the robot grabs the rotating handle to rotate it, and the reciprocating screw rotates accordingly and drives the sliding sleeve to rotate. The sliding sleeve and the screw-on cap realize the rotation of the screw-on cap through the steel ball transmission, and the opening notch drives the lid of the sample bottle to rotate to realize the opening and closing cover operation. When opening and closing the cover, the most part of the steel ball is placed in the cylindrical hole of the screw-on cap, and the upper half of the steel ball is trapped by the tapered hole below the sliding sleeve. Normally, When working, the wave spring relies on elastic force to press the sliding sleeve, and the sliding sleeve presses the steel ball, which can realize reciprocating driving of the screw-on cap to rotate. When the torque is too large, the force transmitted by the steel ball to the tapered hole below the sliding sleeve is too large, exceeding the pressure provided by the wave spring on the sliding sleeve, causing the sliding sleeve to be unable to press the steel ball, and is pushed open by the steel ball to slip, thereby realizing torque control, and will not directly damage the sample bottle due to excessive opening and closing force. The technical problems of the existing opening and closing cover device that cannot achieve precise positioning, it is difficult to accurately control the operation stroke and force, and the inconvenient operation are solved. In addition, the torque can be adjusted by adjusting the elastic force of the wave spring and the tapered angle of the tapered hole.

[0007] Preferably, in order to facilitate the adjustment of the torque so that the opening and closing cover device can use different sample bottle opening and closing covers, the opening and closing mechanism also includes a nut, the nut sleeve is arranged on the outside of the sliding sleeve, the lower end of the nut is threadedly connected to the screw-on cap, and a accommodating chamber for a wave spring is provided between the upper end of the nut and the sliding sleeve. To change the elastic force of the wave spring, the model of the wave spring can be replaced, but this operation is too cumbersome. The present design only needs to change the height of the accommodating chamber to change the elastic force between the wave spring and the sliding sleeve. When adjustment is required, it is only necessary to adjust the depth of the nut and the screw-on cap to change the height of the accommodating chamber, which is convenient and quick.

[0008] Preferably, since loosening of the thread after long-term use will cause changes in the control torque, a threaded hole is opened at the lower end of the nut, and the screw is used to fasten the nut and the screw-on cap through the threaded hole to prevent the nut from being unable to be fastened to the screw-on cap after the thread is loosened, resulting in uncontrollable torque and the inability to open and close the cover normally.

[0009] Preferably, a plurality of stop pins are connected to the side wall of the lower end of the screw-on cap, and a stop ring is provided on the outer side of the screw-on cap to match the stop pin sleeve. When the cap is opened, the obstruction of the bottle body is lost and the stop pin is ejected by the spring. The stop pin can clamp the bottle cap and lift it up with the movement of the screw.

[0010] Preferably, the opening and closing cover assembly also includes a support mounted on the reciprocating screw, the bottom end of the support is movably connected to the positioning assembly, the inner side of the support is connected to a limiting plate, a limiting hole is provided in the middle of the limiting plate, and the limiting hole corresponds to the screw-on cap. The support is used to position the positioning assembly and the opening and closing cover assembly, and the limiting plate is used to limit the sample bottle when opening and closing the cover.

[0011] Preferably, in order to achieve precise positioning, the positioning assembly includes a positioning sleeve, a drag plate, a handle and a base plate. The positioning sleeve and the handle are respectively connected to the drag plate. The handle is T-shaped. The drag plate is slidably connected to the base plate. The base plate is provided with a connecting hole. The support is movably connected to the positioning assembly through the connecting hole. When the lid opening and closing operation is required, the robot clamps the sample bottle into the positioning sleeve, and then grasps the handle to connect the positioning assembly with the lid opening and closing assembly, so that the sample bottle is brought to the lid opening station by the positioning assembly. The drag plate is slidably connected to the base plate to facilitate adjustment of the sample bottle to precisely correspond to the lid opening and closing assembly, and when the positioning assembly is connected to the lid opening and closing assembly, the sample bottle can be clamped or placed by only sliding the drag plate, which is very convenient.

[0012] Preferably, in order to achieve the sliding connection of the drag plate on the base plate, two sliders are provided under the drag plate, and the drag plate is slidably connected to the base plate through the sliders. Copper sheets are provided above the sliders and below the drag plate to reduce friction and thus lubricate.

[0013] Preferably, a sliding groove is provided in the middle of the bottom plate corresponding to the drag plate, and a slider is placed in the sliding groove. The slider slides in the sliding groove to realize the sliding connection of the drag plate to the bottom plate.

[0014] Preferably, when the sample bottle reaches the position, the carriage may slide away due to an uneven work surface or accidental collision. Therefore, a magnet is provided at the bottom of the carriage, and gaskets made of magnetic material are provided at both ends of the slide. After the carriage is moved into position, the adsorption force of the magnet and the gasket is fixed to prevent shaking or movement, thereby preventing the carriage from being displaced by small external disturbances.

[0015] Preferably, the positioning assembly further comprises a limiting mounting block, and limiting members are provided around the limiting mounting block to limit the base plate on the limiting mounting block.

[0016] The substantial effects of this application are:

[0017] (1) When the precise positioning and torque-controllable opening and closing cover device is working normally, the positioning component can accurately push the sample bottle to the corresponding opening slot of the opening and closing cover component, and the wave spring relies on elastic force to press the sliding sleeve, and the sliding sleeve presses the steel ball, so that the screw cap can be driven to rotate reciprocatingly. When the torque is too large, the force transmitted by the steel ball to the tapered hole below the sliding sleeve is too large, exceeding the pressure provided by the wave spring on the sliding sleeve, causing the sliding sleeve to be unable to press the steel ball and be pushed open by the steel ball to slip, thereby achieving torque control, and will not directly damage the sample bottle due to excessive opening and closing force, thereby solving the technical problems of the existing opening and closing cover device that cannot achieve precise positioning, is difficult to accurately control the stroke and force of the operation, and is inconvenient to operate;

[0018] (2) The precise positioning and torque-controllable opening and closing cover device can adjust the torque by simply adjusting the elastic force of the wave spring and the tapered angle of the tapered hole;

[0019] (3) This precisely positioned and torque-controllable opening and closing cover device can change the elastic force between the wave spring and the sliding sleeve by simply changing the height of the accommodating chamber. When adjustment is required, it is only necessary to adjust the depth of the nut and the screw cap to change the height of the accommodating chamber, which is convenient and quick.

[0020] (4) The slide plate of the precisely positioned and torque-controllable opening and closing cover device is slidably connected to the base plate to facilitate adjustment of the sample bottle to precisely correspond to the opening and closing cover assembly. When the positioning assembly is connected to the opening and closing cover assembly, the sample bottle can be clamped or placed by simply sliding the slide plate, which is very convenient.

[0021] (5) When opening and closing the lid with this precise positioning and torque-controlled lid opening and closing device, after the bottle is placed in place, the lid opening mechanism automatically descends, opens the lid, and rises again to pull the bottle out. It only takes three steps at most to open or close the lid. To close the lid, just rotate the handle counterclockwise. After the lid is closed, the lid closing mechanism will automatically rise. The lid opening mechanism can basically be operated blindly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the positioning component and the shaft of the opening and closing cover component of the opening and closing cover device with precise positioning and controllable torque of the present application;

[0023] Figure 2 This is a structural diagram of the opening and closing cover assembly of the opening and closing cover device of the present application with precise positioning and controllable torque;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the positioning assembly of the opening and closing cover device for precise positioning and controllable torque of the present application;

[0025] Figure 4 yes Figure 3 BB cross-sectional view;

[0026] Figure 5 yes Figure 3 AA section view;

[0027] Figure 6 This is a schematic diagram of the three-dimensional structure of the opening and closing cover device with precise positioning and controllable torque of the present application in use;

[0028] Figure 7 It is a cross-sectional view of the opening and closing cover assembly of the opening and closing cover device of the present application with precise positioning and controllable torque.

[0029] In the figure: 1. opening and closing cover assembly; 11. rotating handle; 12. reciprocating screw; 13. cover opening mechanism; 131. nut; 1311. accommodating chamber; 1312. threaded hole; 132. wave spring; 133. sliding sleeve; 1331. tapered hole; 134. screw-on cap; 1341. cylindrical hole; 1342. steel ball; 1343. cover opening slot; 1344. stop pin; 1345. retaining ring; 14. spring; 15. support; 2. positioning assembly; 21. positioning sleeve; 22. drag plate; 221. slider; 23. handle; 24. bottom plate; 241. connecting hole; 242. slide groove; 2421. gasket; 25. limit mounting block. DETAILED DESCRIPTION

[0030] The technical solution of the present application is further described below through specific embodiments.

[0031] Example 1

[0032] like Figure 1-2As shown, an embodiment of the opening and closing cover device of the present application with precise positioning and controllable torque. In this embodiment, a precise positioning and controllable torque opening and closing cover device is characterized in that it includes: an opening and closing cover component 1 and a positioning component 2 that are movably connected. The positioning component 2 can realize the precise pushing of the sample bottle to the corresponding placement of the opening and closing cover component 1, and the opening and closing cover operation is performed by the opening and closing cover component 1. The opening and closing cover component 1 includes a rotating handle 11, a reciprocating screw 12 and an opening cover mechanism 13. The rotating handle 11 and the opening cover mechanism 13 are respectively connected to the two ends of the reciprocating screw 12. When the sample bottle is precisely pushed to the opening and closing cover component 1, the robot grabs the rotating handle 11 to rotate it, and the reciprocating screw 12 rotates accordingly and drives the opening cover mechanism 13 to rotate. The lid opening mechanism 13 unscrews the bottle cap of the sample bottle to open the lid. During the process of opening and closing the lid, it is difficult to accurately control the stroke and force of the operation by the master and slave hands. Therefore, in order to avoid damaging the sample bottle by excessive opening and closing force, torque control is required. Especially in the process of closing the lid, if the reciprocating screw 12 continues to move before completing the stroke after the lid has been tightly closed, there is a high probability that the sample bottle will be damaged. Therefore, a spring 14 is provided at the connection between the bottom end of the reciprocating screw 12 and the lid opening mechanism 13; the lid opening mechanism 13 includes a wave spring 132, a sliding sleeve 133 and a screw-on cap 134. The sliding sleeve 133 is connected to the bottom end of the reciprocating screw 12, the wave spring 132 is sleeved on the upper end of the sliding sleeve 133, and the wave spring 132 abuts against the spring 14 The bottom surface of the sliding sleeve 133 is provided with a plurality of tapered holes 1331, and the top surface of the screw-on cap 134 is provided with a plurality of cylindrical holes 1341 corresponding to the tapered holes 1331. The cylindrical holes 1341 have steel balls 1342 built in. The upper ends of the steel balls 1342 are placed in the tapered holes 1331, and the bottom end of the screw-on cap 134 is provided with a cover opening notch 1343. When opening and closing the cover, the reciprocating screw 12 drives the sliding sleeve 133 to rotate, and the sliding sleeve 133 and the screw-on cap 134 are driven by the steel balls 1342 to realize the rotation of the screw-on cap 134. The cover opening notch 1343 drives the lid of the sample bottle to rotate, realizing the cover opening and closing operation. When opening and closing the cover, most of the steel ball 1342 is placed in the cylindrical hole 1341 of the screw-on cap 134, and the upper end of the steel ball 1342 is placed in the tapered hole 1331. The half part is trapped by the tapered hole 1331 below the sliding sleeve 133. During normal operation, the wave spring 132 relies on its elastic force to press the sliding sleeve 133, and the sliding sleeve 133 presses the steel ball 1342, which can realize reciprocating driving of the screw-on cap 134 to rotate. When the torque is too large, the force transmitted by the steel ball 1342 to the tapered hole 1331 below the sliding sleeve 133 is too large, exceeding the pressure provided by the wave spring 132 on the sliding sleeve 133, causing the sliding sleeve 133 to be unable to press the steel ball 1342, and being pushed open by the steel ball 1342 to slip, thereby realizing torque control, and will not directly damage the sample bottle due to excessive opening and closing force. In addition, adjusting the elastic force of the wave spring 132 and the tapered angle of the tapered hole 1331 can realize torque adjustment.

[0033] Example 2

[0034] like Figure 3-7 As shown, the opening and closing cover device of this embodiment includes: an opening and closing cover assembly 1 and a positioning assembly 2 that are movably connected, the opening and closing cover assembly 1 includes a rotating handle 11, a reciprocating screw 12 and a cover opening mechanism 13, the rotating handle 11 and the cover opening mechanism 13 are respectively connected to the two ends of the reciprocating screw 12, and a spring 14 is sleeved at the connection between the bottom end of the reciprocating screw 12 and the cover opening mechanism 13; the cover opening mechanism 13 includes a wave spring 132, a sliding sleeve 133 and a screw-on cap 134, the sliding sleeve 133 is connected to the bottom end of the reciprocating screw 12, the wave spring 132 is sleeved on the upper end of the sliding sleeve 133, the wave spring 132 abuts against the spring 14, the bottom surface of the sliding sleeve 133 is provided with a plurality of conical holes 1331, the top surface of the screw-on cap 134 is provided with a plurality of cylindrical holes 1341 corresponding to the conical holes 1331, the cylindrical holes 1341 have steel balls 1342 built in, the upper ends of the steel balls 1342 are placed in the conical holes 1331, and the screw-on cap 134 is provided with a plurality of cylindrical holes 1341. The bottom end of the closing cap 134 is provided with a cover opening notch 1343, and the cover opening mechanism 13 also includes a nut 131, which is sleeved on the outside of the sliding sleeve 133, and the lower end of the nut 131 is threadedly connected to the screw-on cap 134, and a accommodating cavity 1311 of the wave spring 132 is provided between the upper end of the nut 131 and the sliding sleeve 133, and a threaded hole 1312 is provided at the lower end of the nut 131, and a screw is screwed through the threaded hole 1312 to fix the nut 131 and the screw-on cap 134. Tighten, a number of stop pins 1344 are connected to the side wall of the lower end of the screw-on cap 134, and a retaining ring 1345 is provided on the outer side of the screw-on cap 134 to match the stop pin 1344. The opening and closing cover assembly 1 also includes a support 15 mounted on the reciprocating screw 12, and the bottom end of the support 15 is movably connected to the positioning assembly 2. The inner side of the support 15 is connected to a limiting plate 151, and a limiting hole 1511 is provided in the middle of the limiting plate 151, and the limiting hole 1511 is set corresponding to the screw-on cap 134.

[0035] The positioning assembly 2 includes a positioning sleeve 21, a carriage 22, a handle 23 and a bottom plate 24. The positioning sleeve 21 and the handle 23 are respectively connected to the carriage 22. The handle 23 is T-shaped. Two sliders 221 are provided under the carriage 22. A slide groove 242 is provided in the middle of the bottom plate 24 corresponding to the carriage 22. The slider 221 is placed in the slide groove 242. The carriage 22 is slidably connected to the bottom plate 24 through the slider 221. Copper sheets are provided above the slider 221 and below the carriage 22. The bottom plate 24 is provided with a connecting hole 241. The support 15 is movably connected to the positioning assembly 2 through the connecting hole 241. A magnet is provided at the bottom of the carriage 22. There are two ends of the slide groove 242. The gasket 2421 is made of magnetic material. After the drag plate 22 is moved into place, it is fixed by the adsorption force between the magnet and the gasket 2421 to prevent shaking or movement. The positioning component 2 also includes a limit mounting block 25. The limit mounting block 25 is surrounded by limit members to limit the bottom plate 24 on the limit mounting block 25. The gasket 2421 is made of magnetic material and cooperates with the magnet at the bottom of the drag plate 22 to prevent the drag plate 22 from being displaced by external disturbances such as an uneven work surface or accidental collision. The slide groove 242 in the middle of the bottom plate 24 cooperates with the slider 221 to realize the overall guidance of the positioning component 2. The copper sheets above the slider 221 and below the drag plate 22 play a role in reducing friction.

[0036] When opening the lid, the master and slave hands put the sample bottle into the positioning sleeve 21, and the master and slave hands grasp the handle 23 to push the entire positioning assembly 2 to the working position below the opening and closing lid assembly 1, and the master and slave hands rotate the rotating handle 11 counterclockwise; the reciprocating screw 12 drives the opening mechanism 13 to descend, and after it descends to the right position, the rotating handle 11 is continued to be rotated to open the lid of the sample bottle. After the opening is completed, the rotating handle 11 is continued to be rotated to raise the lid. The master and slave hands operate the handle 23 of the positioning assembly 2 to take out the sample bottle, and the lid can be closed by operating clockwise. The counterclockwise rotation of the reciprocating screw 12 will drive the sliding sleeve 133 to rotate, and the sliding sleeve 133 drives the screw cap to be screwed on through the steel ball 1342 134 rotates. Overall, the entire opening mechanism 13 rotates and descends with the movement of the reciprocating screw 12. When it descends to a certain height, the opening notch 1343 of the screw-on cap 134 is about to be inserted into the bottle cap. When the opening notch 1343 is inconsistent with the angle of the bottle cap and cannot be inserted, the screw-on cap 134 will be lifted up while rotating until it rotates to the same angle and falls down under the elastic force of the spring 14 and gravity. After the screw-on cap 134 falls, the cover is opened with the rotation of the reciprocating screw 12. At this time, the bottle body loses its obstruction, and the stop pin 1344 is ejected. The stop pin 1344 can clamp the bottle cap and lift it up with the movement of the screw.

[0037] Since it is difficult to accurately control the stroke and force of the master-slave manual operation of opening and closing the lid, torque control is required to avoid damaging the sample bottle by excessive opening and closing force, especially during the closing process. If the reciprocating screw 12 continues to move before completing the stroke after the lid has been closed, there is a high probability that the sample bottle will be damaged. The reciprocating screw 12 drives the sliding sleeve 133, and the sliding sleeve 133 drives the screw-on cap 134 to rotate through the steel ball 1342, wherein most of the steel ball 1342 is placed in the hole of the screw-on cap 134, and the upper half of the steel ball 1342 is trapped by the tapered hole 1331 below the sliding sleeve 133. When working normally, the wave spring 132 relies on its elastic force to press the sliding sleeve 133, and the sliding sleeve 133 presses the steel ball 1342, which can realize reciprocating driving of the screw-on cap 134 to rotate. When the torque is too large, the force transmitted by the steel ball 1342 to the tapered hole 1331 below the sliding sleeve 133 is too large, exceeding the pressure provided by the wave spring 132 on the sliding sleeve 133, causing the sliding sleeve 133 to be unable to press the steel ball 1342, and being pushed open by the steel ball 1342 to slip, thereby realizing torque control. The torque control is realized by the steel ball 1342 sliding out of the tapered hole 1331 below the sliding sleeve 133. Therefore, if the torque needs to be adjusted, the angle of the tapered hole 1331 or the wave spring 132 can be adjusted. In order to facilitate the adjustment of the elastic force of the spring 132, the initial compression amount of the wave spring 132 is further adjusted by the nut 131 to achieve the change of the elastic force. There is an internal thread at the bottom of the nut 131 and an external thread on the outside of the screw-on cap 134. After the nut 131 and the screw-on cap 134 are screwed together, the space in the middle just accommodates the accommodating cavity 1311 of the wave spring 132. The preload of the wave spring 132 can be controlled by adjusting the screw-in depth of the two. A threaded hole 1312 is provided at the lower end of the nut 131. The fastening between the nut 131 and the screw-on cap 134 is achieved by installing a set screw to avoid changes in the control torque due to loosening of the thread after long-term use.

[0038] Example 3

[0039] It should be noted that, when the bottle cap is hexagonal, the opening notch 1343 can be a hexagonal groove. When the opening mechanism 13 rotates and descends to a certain height along with the movement of the reciprocating screw 12, the hexagonal groove 1343 is about to be inserted into the bottle cap. When the hexagonal angle of the hexagonal groove 1343 is inconsistent with that of the bottle cap and cannot be inserted, the hexagonal groove 1343 will be lifted up while rotating until it rotates to the same angle and then falls under the action of the spring and gravity.

[0040] The embodiment described above is only a preferred solution of the present application and does not limit the present application in any form. There are other variations and modifications without exceeding the technical solution described in the claims.

Claims

1. A lid opening and closing device with precise positioning and controllable torque, characterized in that: include: A movable opening and closing cover assembly (1) and a positioning assembly (2), The opening and closing cover assembly (1) comprises a rotating handle (11), a reciprocating screw (12) and a cover opening mechanism (13). The rotating handle (11) and the cover opening mechanism (13) are respectively connected to the two ends of the reciprocating screw (12). A spring (14) is sleeved at the connection between the bottom end of the reciprocating screw (12) and the cover opening mechanism (13). The cover opening mechanism (13) comprises a wave spring (132), a sliding sleeve (133) and a screw-on cap (134); the sliding sleeve (133) is connected to the bottom end of the reciprocating screw (12); the wave spring (132) is sleeved on the upper end of the sliding sleeve (133); the wave spring (132) abuts against the spring (14); a plurality of conical holes (1331) are provided on the bottom surface of the sliding sleeve (133); a plurality of cylindrical holes (1341) are provided on the top surface of the screw-on cap (134) corresponding to the conical holes (1331); a steel ball (1342) is embedded in the cylindrical hole (1341); the upper end of the steel ball (1342) is placed in the conical hole (1331); and a cover opening notch (1343) is provided on the bottom end of the screw-on cap (134); The opening and closing cover assembly (1) further comprises a support (15) sleeved on the reciprocating screw (12), the bottom end of the support (15) is movably connected to the positioning assembly (2), the positioning assembly (2) comprises a positioning sleeve (21), a drag plate (22), a handle (23) and a bottom plate (24), the positioning sleeve (21) and the handle (23) are respectively connected to the drag plate (22), the handle (23) is T-shaped, the drag plate (22) is slidably connected to the bottom plate (24), the bottom plate (24) is provided with a connecting hole (241), the support (15) is movably connected to the positioning assembly (2) through the connecting hole (241), and the positioning assembly (2) further comprises a limiting mounting block (25), and limiting members are provided around the limiting mounting block (25) to limit the bottom plate (24) on the limiting mounting block (25).

2. The precise positioning and torque controllable cover opening and closing device according to claim 1, characterized in that: The cover opening mechanism (13) further comprises a nut (131), which is sleeved on the outside of the sliding sleeve (133), the lower end of the nut (131) being threadedly connected to the screw-on cap (134), and a receiving cavity (1311) for a wave spring (132) being provided between the upper end of the nut (131) and the sliding sleeve (133).

3. The precise positioning and torque controllable cover opening and closing device according to claim 2, characterized in that: A threaded hole (1312) is provided at the lower end of the nut (131), and a screw passes through the threaded hole (1312) to fasten the nut (131) and the screw-on cap (134).

4. The precise positioning and torque-controllable lid opening and closing device according to claim 1, characterized in that: The side wall at the lower end of the screw-on cap (134) is connected with a plurality of stop pins (1344), and a stop ring (1345) is sleeved on the outer side of the screw-on cap (134) to match the stop pins (1344).

5. The precise positioning and torque-controllable opening and closing cover device according to any one of claims 1 to 4, characterized in that: The inner side of the support (15) is connected to a limiting plate (151), and a limiting hole (1511) is provided in the middle of the limiting plate (151), and the limiting hole (1511) is provided corresponding to the screw-on cap (134).

6. The precise positioning and torque controllable cover opening and closing device according to claim 5, characterized in that: Two sliding blocks (221) are provided below the carriage (22), and the carriage (22) is slidably connected to the bottom plate (24) via the sliding blocks (221). Copper sheets are provided above the sliding blocks (221) and below the carriage (22).

7. The precise positioning and torque controllable cover opening and closing device according to claim 6, characterized in that: A sliding groove (242) is provided in the middle of the bottom plate (24) corresponding to the drag plate (22), and the sliding block (221) is placed in the sliding groove (242).

8. The precise positioning and torque-controllable cover opening and closing device according to claim 7, characterized in that: A magnet is provided at the bottom of the carriage (22), and gaskets (2421) made of magnetic material are provided at both ends of the slide groove (242). After the carriage (22) is moved into position, the magnet and the gasket (2421) are used to fix the carriage (22) to prevent it from shaking or moving.

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