A lid opening and closing device and method

Abstract

The present application relates to coal quality analysis equipment technical field, disclose a kind of opening and closing lid device and method.The opening and closing lid device includes non-metallic clamping block, clamping driving component and cap component;Wherein, non-metallic clamping block is used to clamp bottle body.Clamping driving component is connected with non-metallic clamping block, for driving non-metallic clamping block to hold tightly or loosen bottle body.Cap component is used to clamp bottle cap, to open lid or close lid.The method includes: determining working phase, and working phase includes opening lid phase and closing lid phase;According to the pressure control strategy corresponding to working phase, corresponding control instruction is output, so that bottle cap is screwed up while not damaging bottle body.The opening and closing lid method of the present application uses different pressure control strategies for coal bottle according to different working phases, which not only ensures that bottle cap is effectively screwed up, but also prevents damage to coal bottle due to excessive force.

Description

Technical Field

[0001] This invention relates to the field of coal quality analysis equipment technology, and in particular to a cover opening and closing device and method. Background Technology

[0002] With the widespread application of intelligent coal quality analysis systems, automatic coal cylinder cap openers have become essential equipment. However, existing cap openers, in order to prevent the caps from not tightening properly, typically apply excessive force to the coal cylinders during the opening and closing process. This can easily lead to deformation of the coal cylinders, severe wear, and even direct damage. Furthermore, over-tightening the caps can easily cause opening and closing failures. Therefore, how to reduce the degree of damage to coal cylinders and improve their service life during the opening and closing process is a problem that the industry urgently needs to solve. Summary of the Invention

[0003] This invention provides a cap opening and closing device and method to solve the defects of existing cap opening machines that cause serious damage to coal cylinders and reduce their service life during the cap opening and closing process.

[0004] This invention provides a lid opening and closing device, comprising:

[0005] Non-metallic clamping blocks are used to clamp the bottle body;

[0006] A clamping drive component is connected to the non-metallic clamping block and is used to drive the non-metallic clamping block to clamp or release the bottle body;

[0007] A screw cap component used to hold the bottle cap in order to open or close it.

[0008] According to the opening and closing device provided by the present invention, the clamping driving component includes a first clamping driving assembly, the first clamping driving assembly including:

[0009] A first cylinder body, wherein a first drive rod is provided in the first cylinder body, and the first drive rod is connected to the non-metallic clamping block;

[0010] A first directional valve, the first port of the first directional valve is used to allow fluid to enter, and the second port of the first directional valve is used to discharge fluid; the second working port of the first directional valve is connected to the rodless chamber of the first cylinder.

[0011] The first on / off valve has its inlet connected to the first working interface of the first directional valve; the outlet of the first on / off valve is connected to the rod chamber of the first cylinder.

[0012] The first pressure reducing valve has its inlet connected to the first working port of the first directional valve.

[0013] The first check valve has its inlet connected to the outlet of the first pressure reducing valve, and its outlet connected to the rod chamber of the first cylinder.

[0014] According to the opening and closing device provided by the present invention, the first clamping drive assembly further includes:

[0015] A quick-release valve, wherein the air inlet of the quick-release valve is connected to the outlet of the first on-off valve and the outlet of the first one-way valve.

[0016] According to the opening and closing device provided by the present invention, the first clamping drive assembly further includes:

[0017] The first throttle valve has two ports that are respectively connected to the rodless chamber of the first cylinder and the second working port of the first directional valve.

[0018] According to the opening and closing device provided by the present invention, the clamping driving component further includes a second clamping driving assembly, the second clamping driving assembly comprising:

[0019] The second cylinder has a second drive rod inside, and the second drive rod is connected to the non-metallic clamping block.

[0020] The second directional valve has a first port for fluid inflow and a second port for fluid discharge. The first working port of the second directional valve is connected to the rod chamber of the second cylinder, and the second working port of the second directional valve is connected to the rodless chamber of the second cylinder.

[0021] A two-stage pressure regulating circuit, wherein the inlet of the two-stage pressure regulating circuit is connected to the first interface of the second reversing valve, and the outlet of the two-stage pressure regulating circuit is used for fluid discharge; the two-stage pressure regulating circuit has a first position and a second position; the pressure of the two-stage pressure regulating circuit in the first position is greater than the pressure in the second position.

[0022] According to the opening and closing device provided by the present invention, the secondary voltage regulating circuit includes:

[0023] An overflow valve, the inlet of which is connected to the first port of the second directional valve, and the outlet of which is used to discharge fluid;

[0024] The second on / off valve has its inlet connected to the overflow chamber of the overflow valve.

[0025] The second pressure reducing valve has its inlet connected to the outlet of the second on / off valve, and its outlet is used to discharge fluid.

[0026] According to the opening and closing device provided by the present invention, the first working interface of the second reversing valve is connected to the rod chamber of the second cylinder through the second throttle valve, and the second working interface of the second reversing valve is connected to the rodless chamber of the second cylinder through the third throttle valve.

[0027] According to the opening and closing device provided by the present invention, the screw cap component includes:

[0028] The gripper is used to hold the bottle cap;

[0029] A cap-screwing drive assembly, connected to the gripper, is used to drive the gripper to rotate to open or close the cap.

[0030] The present invention also provides a method for opening and closing a lid, for use with the lid opening and closing device described in any of the above claims, the method comprising:

[0031] The working stages are defined, including the opening stage and the closing stage;

[0032] Based on the pressure control strategy corresponding to the working stage, the corresponding control command is output to tighten the bottle cap without damaging the bottle.

[0033] According to the opening and closing method of the present invention, the step of outputting a corresponding control command based on the pressure control strategy corresponding to the working stage includes:

[0034] According to the first pressure control strategy corresponding to the cap-closing stage, a first control command is output to control the cap-opening and cap-closing device to apply a first pressure to the bottle body, so that the first frictional torque between the bottle body and the cap-opening and cap-closing device is less than the first set torque required for cap-closing.

[0035] According to the second pressure control strategy corresponding to the opening stage, a second control command is output to control the opening and closing device to apply a second pressure to the bottle body, so that the second frictional torque between the bottle body and the opening and closing device is greater than the second set torque required to open the cap.

[0036] Wherein, the first pressure is less than the second pressure, and the second frictional torque and the second set torque are both greater than the maximum static frictional torque between the bottle body and the bottle cap.

[0037] This invention provides a cap-opening and closing device and method. The device incorporates a non-metallic clamping block to hold the bottle body. When the bottle body moves relative to the non-metallic clamping block, compared to a metallic clamping block, the non-metallic clamping block reduces frictional damage to the bottle body, thus mitigating the degree of damage. This solves the problem in existing cap-opening machines where the cap-opening and closing process causes severe damage to the coal cylinder and reduces its lifespan.

[0038] The opening and closing method of the present invention adopts different pressure control strategies for the coal cylinder according to different working stages, which ensures that the cap is effectively tightened and prevents damage to the coal cylinder due to excessive force. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the opening and closing cover device provided by the present invention;

[0041] Figure 2 This is one of the schematic diagrams of the clamping drive component of the opening and closing cover device provided by the present invention;

[0042] Figure 3 This is the second schematic diagram of the clamping drive component of the opening and closing cover device provided by the present invention;

[0043] Figure 4 This is one of the flowcharts illustrating the opening and closing method of the lid provided by the present invention.

[0044] Figure label:

[0045] 10. Bottle body; 20. Bottle cap;

[0046] 100. Non-metallic clamping block;

[0047] 200, clamping drive component; 210, first clamping drive assembly; 220, second clamping drive assembly;

[0048] 211. First directional control valve; 212. First on / off valve; 213. First pressure reducing valve; 214. Quick exhaust valve; 215. First cylinder block; 216. First check valve; 217. First throttle valve;

[0049] 221. Second directional valve; 222. Secondary pressure regulating circuit; 2221. Relief valve; 2222. Second on / off valve; 2223. Second pressure reducing valve; 223. Second cylinder; 224. Second throttle valve; 225. Third throttle valve; 226. Pressure sensor; 227. Hydraulic pump;

[0050] 300. Capping component; 310. Gripper; 320. Capping drive assembly;

[0051] 400. Lifting components. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0053] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0054] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0055] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0057] The following is combined with Figures 1 to 3 The opening and closing cover device of the present invention will be described in detail. Figure 1 This is a schematic diagram of the opening and closing cover device provided by the present invention; Figure 2 This is one of the schematic diagrams of the clamping drive component of the opening and closing cover device provided by the present invention; Figure 3 This is the second schematic diagram of the clamping drive component of the opening and closing cover device provided by the present invention.

[0058] like Figure 1 As shown, a specific embodiment of the first aspect of the present invention provides a lid opening and closing device. The lid opening and closing device includes a non-metallic clamping block 100, a clamping drive component 200, and a lid screwing component 300;

[0059] The non-metallic clamping block 100 is used to clamp the bottle body 10. The clamping drive component 200 is connected to the non-metallic clamping block 100 and is used to drive the non-metallic clamping block 100 to tighten or loosen the bottle body 10. The capping component 300 is used to clamp the cap 20 to open or close the cap.

[0060] In this embodiment, by setting a non-metallic clamping block 100, which is used to clamp the bottle body 10, when the bottle body 10 and the non-metallic clamping block 100 move relative to each other, compared with the metal clamping block, the non-metallic clamping block 100 in this embodiment can reduce frictional damage to the bottle body 10 and reduce the degree of damage to the bottle body 10. This solves the problem in the prior art that the capping machine causes serious damage to the coal cylinder and reduces the service life of the coal cylinder during the opening and closing process.

[0061] In some embodiments, the non-metallic clamping block 100 includes a plastic clamping block, a rubber clamping block, or a silicone clamping block.

[0062] In some embodiments, the capping component 300 includes a gripper 310 and a capping drive assembly 320;

[0063] The gripper 310 is used to hold the bottle cap 20; the capping drive assembly 320 is connected to the gripper 310 and is used to drive the gripper 310 to rotate to open or close the cap. When opening or closing the cap, the gripper 310 clamps the bottle cap 20, and the capping drive assembly 320 drives the gripper 310 to rotate to achieve opening or closing the cap.

[0064] Optionally, the gripper 310 is a non-metallic gripper 310, which reduces the wear on the bottle cap 20.

[0065] Optionally, the cap-screwing drive assembly 320 includes, but is not limited to, a motor drive.

[0066] In some embodiments, the cap opening and closing device further includes a lifting component 400; the lifting component 400 is connected to the gripper 310 and is used to drive the gripper 310 to move along the height direction of the bottle body 10, so that the height of the gripper 310 adapts to the height of the cap 20, making the cap opening and closing device applicable to bottles of different heights and expanding the applicability of the cap opening and closing device.

[0067] Optionally, the lifting component 400 includes, but is not limited to, an electrically operated telescopic rod or a pulley assembly.

[0068] Specifically, the gripper 310 is connected to the conveyor belt of the pulley assembly. The pulley assembly rotates forward under the drive of the motor, causing the gripper 310 to rise along the bottle body 10. The pulley assembly rotates in reverse under the drive of the motor, causing the gripper 310 to descend along the bottle body 10.

[0069] In some embodiments, the clamping drive component 200 includes a motor drive assembly; the motor drive assembly includes a motor, the drive end of which is connected to the non-metallic clamping block 100 for driving the non-metallic clamping block 100 to move toward or away from the bottle body 10, so that the non-metallic clamping block 100 clamps or releases the bottle body 10.

[0070] like Figure 2 As shown, in some embodiments, the clamping drive component 200 includes a first clamping drive assembly 210; the first clamping drive assembly 210 includes a first cylinder 215, a first reversing valve 211, a first on / off valve 212, a first pressure reducing valve 213, and a first check valve 216.

[0071] The first cylinder 215 contains a first drive rod connected to a non-metallic clamping block 100. A first port of the first directional valve 211 is used to allow fluid to enter, and a second port of the first directional valve 211 is used to discharge fluid. A second working port of the first directional valve 211 is connected to the rodless chamber of the first cylinder 215. The inlet of the first on / off valve 212 is connected to the first working port of the first directional valve 211. The outlet of the first on / off valve 212 is connected to the rod chamber of the first cylinder 215. The inlet of the first pressure-reducing valve 213 is connected to the first working port of the first directional valve 211. The inlet of the first check valve 216 is connected to the outlet of the first pressure-reducing valve 213, and the outlet of the first check valve 216 is connected to the rod chamber of the first cylinder 215.

[0072] When the cap is closed, the first on / off valve 212 is disconnected, and fluid flows in from the first port of the first directional valve 211. After being depressurized by the first pressure reducing valve 213, it flows into the rod chamber of the first cylinder 215 through the first one-way valve 216. At the same time, the fluid in the rodless chamber of the first cylinder 215 flows out through the second working port and the second port of the first directional valve 211, causing the first drive rod to drive the non-metallic clamping block 100 to clamp the bottle body 10. At this time, the set torque required for closing the cap can be set by the first pressure reducing valve 213. In this way, during the cap closing process, when the cap closing torque reaches the set torque, the bottle body 10 and the non-metallic clamping block 100 can slide relative to each other, ensuring that the gripper 310 and the cap 20 will not move relative to each other and wear out, thus protecting the coal cylinder.

[0073] When the cap is opened, the first on-off valve 212 is activated, and fluid flows in from the first port of the first directional valve 211, then through the first on-off valve 212 into the rod chamber of the first cylinder 215. Simultaneously, fluid in the rodless chamber of the first cylinder 215 flows out through the second working port and the second port of the first directional valve 211, causing the first drive rod to drive the non-metallic clamping block 100 to clamp the bottle body 10. At this time, because the fluid has not been depressurized before entering the rod chamber, the frictional torque generated between the non-metallic clamping block 100 and the bottle body 10 is relatively large when the flow rate and pressure of the inflowing fluid remain constant. Furthermore, by adjusting the fluid flow rate and pressure, the frictional torque can be made greater than the set torque required to open the cap, thereby ensuring that the cap 20 can be opened smoothly.

[0074] After the cap is opened and closed, the first reversing valve 211 reverses and the first on-off valve 212 connects. The fluid flows from the second port of the first reversing valve 211 into the rodless chamber of the first cylinder 215. The fluid in the rod chamber of the first cylinder 215 passes through the first on-off valve 212 and the first working port of the first reversing valve 211 and is discharged from the first port of the first reversing valve 211, causing the non-metallic clamping block 100 to loosen the bottle body 10.

[0075] By setting the first check valve 216, the fluid is prevented from flowing back to the first pressure reducing valve 213 and damaging it, thus protecting the first pressure reducing valve 213.

[0076] Optionally, the first directional valve 211 is a two-position four-way solenoid valve.

[0077] Optionally, the first on / off valve 212 is a one-position two-way solenoid valve.

[0078] Optionally, the fluid can be either a gas or a liquid. Air is preferred as the gas, and hydraulic oil is preferred as the liquid.

[0079] In some other embodiments, the outlet of the first on / off valve 212 can be connected to the rodless chamber of the first cylinder 215, and the second working port of the first directional valve 211 can also be connected to the rod chamber of the first cylinder 215.

[0080] In some embodiments, when the fluid is gas, the first clamping drive assembly 210 further includes a quick-release valve 214; the inlet of the quick-release valve 214 is connected to the outlet of the first on / off valve 212 and the outlet of the first one-way valve 216. When closing or opening the cap, gas enters the rod chamber of the first cylinder 215 through the quick-release valve 214. After opening or closing the cap, the gas in the rod chamber of the first cylinder 215 is discharged from the quick-release valve 214, achieving the purpose of quickly releasing the bottle body 10.

[0081] In some embodiments, the first clamping drive assembly 210 further includes a first throttle valve 217; the two ports of the first throttle valve 217 are respectively connected to the rodless chamber of the first cylinder 215 and the second working port of the first directional valve 211. The fluid flow rate can be controlled by setting the first throttle valve 217.

[0082] like Figure 3 As shown, in some other embodiments, the clamping drive component 200 further includes a second clamping drive assembly 220; the second clamping drive assembly 220 includes a second cylinder 223, a second reversing valve 221 and a secondary pressure regulating circuit 222.

[0083] The second cylinder 223 contains a second drive rod, which is connected to the non-metallic clamping block 100. The first port of the second directional valve 221 is for fluid inflow, and the second port is for fluid discharge. The first working port of the second directional valve 221 is connected to the rod chamber of the second cylinder 223, and the second working port is connected to the rodless chamber of the second cylinder 223. The inlet of the secondary pressure regulating circuit 222 is connected to the first port of the second directional valve 221, and the outlet of the secondary pressure regulating circuit 222 is for fluid discharge. The secondary pressure regulating circuit 222 has a first position and a second position. The pressure in the first position of the secondary pressure regulating circuit 222 is greater than the pressure in the second position.

[0084] When the cap is closed, the secondary pressure regulating circuit 222 is in the second position. Fluid enters the rod chamber of the second cylinder 223 through the first port and the first working port of the second reversing valve 221. At the same time, fluid in the rodless chamber of the second cylinder 223 is discharged through the second working port and the second port of the second reversing valve 221, causing the non-metallic clamping block 100 to clamp the bottle body 10. At this time, the pressure of the secondary pressure regulating circuit 222 in the second position is the pressure of the non-metallic clamping block 100 on the bottle body 10, and the frictional torque generated is less than the set torque required for capping. In this way, during the capping process, when the capping torque reaches the set torque, the bottle body 10 and the non-metallic clamping block 100 can slide relative to each other, ensuring that the gripper 310 and the cap 20 will not move relative to each other and wear out, thus protecting the coal cylinder.

[0085] When the cap is opened, the secondary pressure regulating circuit 222 is in the first position. Fluid enters the rod chamber of the second cylinder 223 through the first port and the first working port of the second reversing valve 221. At the same time, fluid in the rodless chamber of the second cylinder 223 is discharged through the second working port and the second port of the second reversing valve 221, causing the non-metallic clamping block 100 to clamp the bottle body 10. At this time, the pressure of the secondary pressure regulating circuit 222 in the first position is the pressure of the non-metallic clamping block 100 on the bottle body 10. The frictional torque generated is greater than the set torque required to open the cap, ensuring that the cap 20 can be opened smoothly.

[0086] After the cover is opened and closed, the second reversing valve 221 reverses, the secondary pressure regulating circuit 222 is in the second position, and the fluid enters the rod chamber of the second cylinder 223 through the first port and the first working port of the second reversing valve 221. At the same time, the fluid in the rodless chamber of the second cylinder 223 is discharged through the second working port and the second port of the second reversing valve 221, and the non-metallic clamping block 100 is released.

[0087] Preferably, the fluid entering the second directional valve 221 is hydraulic oil.

[0088] Specifically, the first port of the second directional valve 221 is connected to the oil tank via the hydraulic pump 227 to allow hydraulic oil to flow in. The second port of the second directional valve 221 is also connected to the oil tank to allow hydraulic oil to flow back to the oil tank.

[0089] In some embodiments, the secondary voltage regulating circuit 222 includes an overflow valve 2221, a second on / off valve 2222, and a second pressure reducing valve 2223;

[0090] Specifically, the inlet of the overflow valve 2221 is connected to the first interface of the second directional valve 221, and the outlet of the overflow valve 2221 is used to discharge fluid; the inlet of the second on-off valve 2222 is connected to the overflow chamber of the overflow valve 2221; the inlet of the second pressure reducing valve 2223 is connected to the outlet of the second on-off valve 2222, and the outlet of the second pressure reducing valve 2223 is used to discharge fluid.

[0091] The set pressure of the second pressure reducing valve 2223 is less than the pressure of the relief valve 2221. The pressure in the secondary pressure regulating circuit 222 when the second on-off valve 2222 is open is greater than the pressure when the second on-off valve 2222 is closed.

[0092] When the cap is closed, the second on / off valve 2222 is activated, and the system pressure is reduced in two stages by the overflow valve 2221 and the second pressure reducing valve 2223. The hydraulic oil enters the rod chamber of the second cylinder 223 through the first port and the first working port of the second directional valve 221, while the hydraulic oil in the rodless chamber of the second cylinder 223 is discharged through the second working port and the second port of the second directional valve 221, causing the non-metallic clamping block 100 to clamp the bottle body 10. At this time, the system pressure is the pressure of the non-metallic clamping block 100 on the bottle body 10, and the frictional torque generated is less than the set torque required for capping. Thus, during the capping process, when the capping torque reaches the set torque, the bottle body 10 and the non-metallic clamping block 100 can slide relative to each other, ensuring that the gripper 310 and the cap 20 will not move relative to each other and wear out, thus protecting the coal cylinder.

[0093] When the cap is opened, the second on / off valve 2222 is disconnected, and the system pressure is not reduced by the second pressure reducing valve 2223. Under higher pressure, the hydraulic oil enters the rod chamber of the second cylinder 223 through the first port and the first working port of the second directional valve 221. At the same time, the fluid in the rodless chamber of the second cylinder 223 is discharged through the second working port and the second port of the second directional valve 221, causing the non-metallic clamping block 100 to clamp the bottle body 10. At this time, the system pressure is the pressure of the non-metallic clamping block 100 on the bottle body 10, and the frictional torque generated is greater than the set torque required to open the cap, ensuring that the cap 20 can be opened smoothly.

[0094] After the lid is opened and closed, the second on / off valve 2222 is disconnected, the second reversing valve 221 is reversed, and the fluid enters the rod chamber of the second cylinder 223 through the first port and the first working port of the second reversing valve 221. At the same time, the fluid in the rodless chamber of the second cylinder 223 is discharged through the second working port and the second port of the second reversing valve 221, and the non-metallic clamping block 100 is released.

[0095] In some embodiments, the first working port of the second directional valve 221 is connected to the rod chamber of the second cylinder 223 via the second throttle valve 224, and the second working port of the second directional valve 221 is connected to the rodless chamber of the second cylinder 223 via the third throttle valve 225. The flow rate of the fluid can be adjusted by the configuration of the second throttle valve 224 and the third throttle valve 225.

[0096] In some other embodiments, the first working port of the second directional valve 221 can be connected to the rodless chamber of the second cylinder 223 through the second throttle valve 224, and the second working port of the second directional valve 221 can be connected to the rod chamber of the second cylinder 223 through the third throttle valve 225.

[0097] In some embodiments, the second clamping drive assembly 220 further includes a pressure sensor 226 disposed at the first interface of the second reversing valve 221 for detecting real-time pressure, so that the user can easily observe the real-time pressure of the system.

[0098] In some embodiments, the second clamping drive assembly 220 further includes a controller and an alarm;

[0099] The controller is electrically connected to pressure sensor 226; the alarm is electrically connected to the controller; the controller outputs an alarm control command based on the real-time pressure to control the alarm to sound. The alarm serves as a reminder.

[0100] The following is combined Figure 4 The method for opening and closing the lid provided by this invention will be described in detail. Figure 4 This is one of the flowcharts illustrating the opening and closing method of the lid provided by the present invention.

[0101] like Figure 4 As shown, the second invention provides a method for opening and closing a lid, which is used in any of the lid opening and closing devices described above. The method includes:

[0102] S100. Determine the working stage, which includes the opening stage and the closing stage;

[0103] S200: Based on the pressure control strategy corresponding to the working stage, output the corresponding control command to tighten the bottle cap without damaging the bottle body.

[0104] The opening and closing method of this embodiment adopts different pressure control strategies for the coal cylinder according to different working stages, which ensures that the cap is effectively tightened while preventing excessive force from damaging the coal cylinder.

[0105] Furthermore, since the opening and closing method of this embodiment is used in any of the opening and closing devices of the above embodiments, it has at least the advantages of the opening and closing devices described above, which will not be repeated here.

[0106] In some embodiments, after outputting corresponding control commands according to the pressure control strategy corresponding to the working stage, so that the bottle cap is tightened without damaging the bottle body, the method further includes:

[0107] Output release control command to control the cap opening and closing device to release the bottle body and cap.

[0108] Specifically, after the cap is opened or closed, a release control command is output to control the cap opening and closing device to release the bottle body and cap.

[0109] In some embodiments, according to the pressure control strategy corresponding to the working stage, corresponding control commands are output, including:

[0110] Based on the first pressure control strategy corresponding to the cap-closing stage, a first control command is output to control the cap-opening / closing device to apply a first pressure to the bottle body, ensuring that the first frictional torque between the bottle body and the cap-opening / closing device is less than the first set torque required for cap-closing. This ensures that the bottle body and the cap-opening / closing device can slide relative to each other when the cap is closed, thereby protecting the coal cylinder from excessive wear and deformation. Simultaneously, it also limits the problem of over-tightening the cap during closing, which could lead to difficulty in opening or failure to open.

[0111] According to the second pressure control strategy corresponding to the opening stage, a second control command is output to control the opening and closing device to apply a second pressure to the bottle body, so that the second frictional torque between the bottle body and the opening and closing device is greater than the second set torque required to open the cap.

[0112] The first pressure is less than the second pressure, and both the second frictional torque and the second set torque are greater than the maximum static frictional torque between the bottle body and the cap. This ensures that the cap can be opened smoothly and the coal cylinder will not slip.

[0113] In this embodiment, during the cap-closing stage, by controlling the clamping force on the bottle body, the first frictional torque between the bottle body and the cap-closing device is made less than the first set torque required for cap-closing. Both are greater than the thread frictional torque during the tightening process between the cap and the bottle body. During the cap-closing process, the cap is gradually tightened relative to the bottle body. When it is fully tightened, the thread frictional torque between the cap and the bottle body increases significantly. After reaching the frictional torque between the cap-closing device and the bottle body, the cap and the bottle body no longer move relative to each other. At this time, the cap-screwing torque is greater than the frictional torque between the cap-closing device and the bottle body, which will drive the entire coal cylinder and the cap-closing device to move relative to each other. This ensures that the cap will not be excessively deformed due to excessive tightening force when the coal cylinder is tightened, reducing wear and extending the life of the coal cylinder. The degree of tightening between the cap and the bottle body (determined by the maximum frictional torque between them) is equal to the frictional torque between the clamp and the bottle body. Therefore, by reasonably setting this frictional torque, the purpose of setting the tightening degree can be achieved.

[0114] In this embodiment, during the opening stage, by controlling the clamping force of the coal cylinder, the second frictional torque between the cylinder body and the opening and closing device is made greater than the second set torque required for opening the cap. Both are greater than the maximum static frictional torque between the cap and the cylinder body, ensuring that the cap can be opened smoothly. During the opening process, there is no slippage between the opening and closing device and the cap, or between the opening and closing device and the cylinder body, ensuring the smooth completion of opening the cap.

[0115] In some embodiments, according to a first pressure control strategy corresponding to the cap-closing stage, a first control command is output to control the cap-opening / closing device to apply a first pressure to the bottle body, such that the first frictional torque between the bottle body and the cap-opening / closing device is less than the first set torque required for cap closing, including:

[0116] During the capping stage, the first on / off valve is disconnected, and the gas enters the rod chamber of the first cylinder through the first pressure reducing valve, the first one-way valve and the quick exhaust valve. The first pressure applied to the bottle body by the non-metallic clamping block can be set by the first pressure reducing valve to ensure that the first frictional torque between the bottle body and the non-metallic clamping block is less than the first set torque required for capping.

[0117] In some embodiments, according to a second pressure control strategy corresponding to the cap opening stage, a second control command is output to control the cap opening / closing device to apply a second pressure to the bottle body, such that the second frictional torque between the bottle body and the cap opening / closing device is greater than the second set torque required for opening the cap, including:

[0118] During the cap opening stage, the first on / off valve is opened, and the gas enters the rod chamber of the first cylinder through the first on / off valve, which causes the non-metallic clamping block to exert a second pressure on the bottle body for a period of time, making the second frictional torque between the bottle body and the non-metallic clamping block greater than the second set torque required to open the cap.

[0119] In other embodiments, according to a first pressure control strategy corresponding to the cap-closing stage, a first control command is output to control the cap-opening / closing device to apply a first pressure to the bottle body, so that the first frictional torque between the bottle body and the cap-opening / closing device is less than the first set torque required for cap closing, including:

[0120] During the capping stage, the second on / off valve is connected, and hydraulic oil enters the rod chamber of the second cylinder through the second directional valve and the second throttle valve, ensuring that the first frictional torque between the bottle body and the non-metallic clamping block is less than the first set torque required for capping.

[0121] In other embodiments, according to the second pressure control strategy corresponding to the cap opening stage, a second control command is output to control the cap opening / closing device to apply a second pressure to the bottle body, so that the second frictional torque between the bottle body and the cap opening / closing device is greater than the second set torque required for opening the cap, including:

[0122] During the cap opening stage, the second on / off valve is disconnected, and hydraulic oil enters the rod chamber of the second cylinder through the second directional valve and the second throttle valve to ensure that the non-metallic clamping block applies a second pressure to the bottle body for a certain period of time, so that the second frictional torque between the bottle body and the non-metallic clamping block is greater than the second set torque required to open the cap.

[0123] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lid opening and closing device, characterized in that, include: Non-metallic clamping block (100) is used to clamp the bottle body (10); A clamping drive component (200) is connected to the non-metallic clamping block (100) and is used to drive the non-metallic clamping block (100) to clamp or release the bottle body (10). A screw cap component (300) is used to hold the bottle cap (20) to open or close the cap; The clamping drive component (200) includes a first clamping drive assembly (210), which includes: A first cylinder (215) has a first drive rod inside, and the first drive rod is connected to the non-metallic clamping block (100); The first directional valve (211) has a first port for fluid to enter and a second port for fluid to exit; the second working port of the first directional valve (211) is connected to the rodless chamber of the first cylinder (215). The first on / off valve (212) has its inlet connected to the first working interface of the first directional valve (211); the outlet of the first on / off valve (212) is connected to the rod chamber of the first cylinder (215). The first pressure reducing valve (213) has its inlet connected to the first working interface of the first directional valve (211); The first check valve (216) has its inlet connected to the outlet of the first pressure reducing valve (213), and its outlet connected to the rod chamber of the first cylinder (215).

2. The opening and closing cover device according to claim 1, characterized in that, The first clamping drive assembly (210) further includes: The quick-release valve (214) has its inlet connected to the outlet of the first on / off valve (212) and the outlet of the first one-way valve (216).

3. The opening and closing cover device according to claim 1, characterized in that, The first clamping drive assembly (210) further includes: The first throttle valve (217) has two ports that are connected to the rodless chamber of the first cylinder (215) and the second working port of the first directional valve (211), respectively.

4. The opening and closing cover device according to claim 1, characterized in that, The clamping drive component (200) further includes a second clamping drive assembly (220), the second clamping drive assembly (220) comprising: The second cylinder (223) has a second drive rod inside, and the second drive rod is connected to the non-metallic clamping block (100); The second directional valve (221) has a first port for fluid inflow and a second port for fluid discharge. The first working port of the second directional valve (221) is connected to the rod chamber of the second cylinder (223), and the second working port of the second directional valve (221) is connected to the rodless chamber of the second cylinder (223). The secondary pressure regulating circuit (222) has an inlet connected to the first interface of the second reversing valve (221) and an outlet for discharging fluid. The secondary pressure regulating circuit (222) has a first position and a second position. The pressure of the secondary pressure regulating circuit (222) in the first position is greater than the pressure in the second position.

5. The opening and closing cover device according to claim 4, characterized in that, The secondary voltage regulating circuit (222) includes: The overflow valve (2221) has its inlet connected to the first interface of the second directional valve (221), and its outlet is for fluid discharge. The inlet of the second on / off valve (2222) is connected to the overflow chamber of the overflow valve (2221); The second pressure reducing valve (2223) has its inlet connected to the outlet of the second on / off valve (2222), and its outlet is used to discharge fluid.

6. The opening and closing cover device according to claim 4, characterized in that, The first working port of the second directional valve (221) is connected to the rod chamber of the second cylinder (223) through the second throttle valve (224), and the second working port of the second directional valve (221) is connected to the rodless chamber of the second cylinder (223) through the third throttle valve (225).

7. The opening and closing cover device according to any one of claims 1 to 6, characterized in that, The capping component (300) includes: A gripper (310) is used to hold the bottle cap (20). A cap-screwing drive assembly (320) is connected to the gripper (310) and is used to drive the gripper (310) to rotate to open or close the cap.

8. A method for opening and closing a lid, characterized in that, The lid opening and closing device according to any one of claims 1 to 7, wherein the lid opening and closing method comprises: The working stages are defined, including the opening stage and the closing stage; Based on the pressure control strategy corresponding to the working stage, output the corresponding control command to tighten the bottle cap without damaging the bottle body. The step of outputting corresponding control commands based on the pressure control strategy corresponding to the working stage includes: According to the first pressure control strategy corresponding to the cap-closing stage, a first control command is output to control the cap-opening and cap-closing device to apply a first pressure to the bottle body, so that the first frictional torque between the bottle body and the cap-opening and cap-closing device is less than the first set torque required for cap-closing. According to the second pressure control strategy corresponding to the opening stage, a second control command is output to control the opening and closing device to apply a second pressure to the bottle body, so that the second frictional torque between the bottle body and the opening and closing device is greater than the second set torque required to open the cap. Wherein, the first pressure is less than the second pressure, and the second frictional torque and the second set torque are both greater than the maximum static frictional torque between the bottle body and the bottle cap.

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