353results about "Threaded caps removal" patented technology

The present invention relates to a blood testing machine comprising a loading device, a retrieving device, a batching device, a transfer device, and a testing device. After a blood sample is collected, a blood collection tube and other materials are placed in the loading device. After the loading device loads the sample, the retrieving device clamps the blood collection tube and other materials on the loading device and moves them to a set position in the batching device. The blood in the blood collection tube is sampled by the batching device and the reagents required for the test are added to form a test specimen. The transfer device transfers the test specimen to the testing device for blood testing. Compared with the prior art, the present invention substantially automates the steps of blood testing, including sample transportation, sample reception and processing, on-board testing, and sample storage, greatly improving the accuracy and speed of testing.

The invention discloses a force-position control bottle cap screwing device and method supporting the digital twinning technology. The force-position control bottle cap screwing device comprises a screwing clamping jaw mechanism used for screwing a bottle cap; the Z-axis executing mechanism and the X-axis executing mechanism are used for adjusting the position of the screwing clamping jaw mechanism, the screwing clamping jaw mechanism is fixed to the output end of the Z-axis executing mechanism, and the Z-axis executing mechanism is fixed to the output end of the X-axis executing mechanism; the force sensor and the position sensor are used for detecting the stress and position information of the screwing clamping jaw mechanism; and the control unit is used for receiving signals of the force sensor and the position sensor and regulating and controlling the stress and the position of the screwing clamping jaw mechanism according to the received signals. The requirement for opening and closing the cell culture fluid bottle cap to take fluid in the intelligent and automatic production process of the organoids can be met, and technical and theoretical possibilities are provided for successful research and development of the intelligent and automatic production line for culturing and observing the organoids.

The sewage sampling device comprises a bearing seat, a plurality of test bottles and a sampling module, the plurality of test bottles are arranged on the bearing seat at intervals, each test bottle comprises a bottle body and a bottle cap, the bottle cap is rotatably mounted on the bottle body through a rotary pin and used for opening / closing the bottle body, and the bottle cap extends outwards relative to the bottle body and forms a groove plate; the sampling module comprises a manipulator, a wedge edge rod and a suction pipe, the wedge edge rod and the suction pipe are arranged in parallel and are respectively connected to the manipulator, the wedge edge rod vertically extends downwards relative to the suction pipe and forms a pushing part, and the pushing part is matched with the groove plate; when the manipulator simultaneously drives the wedge edge rod and the suction tube to vertically move downwards, the wedge edge rod can push the groove plate through the pushing part so as to drive the bottle cap to open the bottle body; the straw can be inserted into the bottle body in the opened state. Therefore, bending deformation of the suction pipe is effectively avoided, the bottle cap is driven to reset through the rotary pin, automatic closing of the bottle cap after sampling can be achieved, and the lasting sealing performance of a test bottle is guaranteed.

The invention discloses a boiler water treatment agent supplementing device which comprises at least one agent storage mechanism, and each agent storage mechanism comprises an agent storage tank, an agent supplementing valve communicated with the agent storage tank, an agent discharging valve and a one-way air inlet valve; and the medicine barrel clamping platform is used for fixing the medicine adding container. According to the device, the medicine barrel clamping platform is arranged to fix the medicine adding container, then the first moving assembly is used for driving the liquid outlet end of the pumping mechanism to be connected to a medicine supplementing valve of the corresponding medicine storage tank, then the second moving assembly is used for driving the cap screwing mechanism to move to a bottle cap of the medicine adding container, and the bottle cap of the medicine adding container is clamped and driven to be screwed off in a rotating mode; then the third moving assembly is matched with the second moving assembly to enable the pumping mechanism to move to the bottle opening of the dosing container, then the fourth moving assembly operates the pumping mechanism to be inserted into the dosing container, liquid in the dosing container can be extracted and injected into the medicine storage tank through the medicine supplementing valve, manual participation in the medicine supplementing process is effectively reduced, and the medicine supplementing efficiency is improved. And the purpose of improving the operation safety is achieved.

The invention discloses a pretreatment device and method for plastic recycling, and relates to the technical field of plastic recycling, the pretreatment device comprises an L-shaped frame, a bottle cap locking piece is mounted on one side of a threaded sleeve block, a bottle body rotating piece is arranged at the top of a movable frame, and a dumping unit is arranged at the bottom of the L-shaped frame. By arranging a bottle cap locking piece and a bottle body rotating piece, a second transmission straight gear is meshed with a second rack through movement of a moving frame, so that a first T-shaped clamping plate moves towards the circle center of a placing plate, bottle caps can be clamped and limited through the first T-shaped clamping plate, meanwhile, a side plate moves upwards, and the bottle caps can be clamped and limited through the side plate. A second T-shaped clamping plate fits and supports a bottle body of a plastic bottle, when a first transmission straight gear is meshed with a first rack, the second T-shaped clamping plate can enable the bottle body to rotate, so that a bottle cap is separated from the bottle body, a solution in the plastic bottle can be poured out, and the influence of the solution on subsequent plastic recovery is prevented.

A capping and de-capping apparatus for capping and de-capping tubes disposed in a tube holding rack having a two-dimensional array of apertures for holding the tubes. The apparatus comprises a rack support for supporting the tube holding rack, a head unit adapted for carrying a cartridge comprising at least one capping and de-capping gripper, a drive system for moving the rack support and the head unit relatively towards and away from one another, in order to cause engagement or disengagement of the capping and de-capping gripper with or from a cap of at least one tube, and a drive system for rotating the capping and de-capping gripper, wherein rotation in one direction causes attachment of the cap to the tube and rotation in the opposite direction causes detachment of the cap from said tube.

The utility model provides an automatic test paper tank opening and closing mechanism and a rheological station automatic detection device, and relates to the technical field of automatic detection devices. The automatic test paper tank opening and closing mechanism comprises a supporting base, a test paper storage tank, an uncovering clamping jaw and a first linear module, the first linear module is located on one side of the supporting base, the uncovering clamping jaw is slidably installed on the first linear module to be close to or away from the test paper storage tank, and the test paper storage tank comprises a tank body, a cover body and a flexible block arranged in the tank body; the cover body covers the opening of the tank body, the flexible block is provided with a plurality of slots, a piece of test paper is inserted into each slot, and the cover opening clamping jaw can clamp the cover body to open the test paper storage tank or cover the opening of the tank body with the cover body. Before a robot picks up test paper, the test paper storage tank is opened in advance through the uncovering clamping jaw, so that the robot does not need to open the test paper storage tank, the detection efficiency is improved, meanwhile, the dependence of detection items on manpower is reduced, and the labor cost is reduced.

The utility model provides a bottle capable of being used for opening a material storage cavity with a pressing type instant matching cover and an instant matching bottle, and the bottle capable of being used for opening the material storage cavity with the pressing type instant matching cover comprises a bottle body and a bottle opening, a sunken part and an opening part are arranged at the bottom of the bottle body, and the sunken part is a cylindrical cavity formed by sinking the bottom of the bottle body towards the bottle opening direction and used for containing the instantly-matched cover; the opening part at least comprises an opening end face, and the opening end face is formed by protruding the middle of the end, close to the bottle opening, of the concave part in the direction away from the bottle opening and used for being attached to the pressing part of the instantly-matched cover; the bottle opening is formed in the top of the bottle body and used for being connected with an instant matching cover. The instant matching cover connected to the bottle opening of the other bottle is sleeved with the concave portion of one bottle, the opening end face of one bottle is attached to the pressing portion of the instant matching cover connected to the bottle opening of the other bottle, and the opening end face pushes the pressing portion under the action of external force so as to open the storage cavity of the instant matching cover. Opening of the material storage cavity of the instant matching cover is very labor-saving and convenient.

The utility model discloses a cover opening device, which relates to the technical field of automation equipment and comprises a first transmission component, a first connecting frame, a second transmission component, a second connecting frame and a cover opening component, and the first connecting frame is arranged on the first transmission component; the second transmission assembly is arranged on the first connecting frame; the second connecting frame is arranged on the second transmission assembly; the cover opening assembly is arranged on the second connecting frame. According to the technical scheme, the first transmission assembly and the second transmission assembly are matched with each other, double-stroke control is achieved, and it is guaranteed that the uncovering assembly can be accurately connected with a ton barrel cover through segmented movement of the uncovering assembly. The cover opening assembly automatically completes barrel cover opening and transferring after being connected with the ton barrel cover, the whole feeding process can be fully automatically conducted by being in butt joint with upstream equipment and downstream equipment, manual assistance is omitted, the physical labor intensity of workers is reduced, and the overall liquid feeding efficiency is improved.

The utility model discloses a PCR (Polymerase Chain Reaction) connecting pipe cap opener, which comprises an inserting plate assembly and a supporting assembly, and is characterized in that the inserting plate assembly comprises a lower inserting plate and an upper inserting plate which is rotatably connected to the lower inserting plate, and the supporting assembly comprises a holding rod which is fixedly connected to the rear end of the lower inserting plate and a rotating rod which is fixedly connected to the upper inserting plate. According to the utility model, through simple insertion and rotation operations, the rapid uncapping of single-row or multi-row PCR linked pipes is realized, the experiment efficiency is obviously improved, the pipes are prevented from sliding or separating in the uncapping process, and the stability and safety of the operation are ensured.

The utility model discloses a kind of multiple non-matrix automatic cap screwing workstations for cryopreservation tube, including bottom installation component, support component is provided on bottom installation component, support component top end is provided with top installation component, top installation component is provided with outer transmission component, first moving nut, second moving nut are provided on outer transmission component, first moving nut is provided with first moving plate, first moving plate is provided with a plurality of first installation hole, inner screwing transmission component is provided in first installation hole, second moving nut is provided with second moving plate, second moving plate is provided with a plurality of second installation hole, moving guide rail is provided on bottom installation component, feeding moving plate is provided on moving guide rail, feeding moving plate is provided with cryopreservation tube storage component, use this automatic cap screwing workstation, realize the automatic screwing cover and unscrewing cover operation to batch cryopreservation tube, effectively improve the operation efficiency that cover is screwed or unscrewed.

The present application relates to the technical field of sample pretreatment automation, and discloses a system of a full-automatic sampling tube cap screwing and pipetting workstation and a running method thereof.The system comprises a motion point definition module, a cap screwing adaptation identification module, a label scanning module, a pipetting planning and execution module, a cap screwing torque calling module and a real-time torque acquisition module.The system realizes continuous scanning and reliable identification of the cap profile in the motion state through a dynamic coordinate system and key motion points, dynamically calls matched torque parameters to execute cap screwing according to the identification result, and simultaneously acquires real-time torque data.The system synchronously completes sample label information analysis, pipetting path planning and pressure monitoring.The scheme realizes adaptive perception and closed-loop cap screwing control of the cap state, and improves the robustness of cap identification, the consistency of cap screwing action and the reliability of the overall process.

A decapping device may be integrated with an automated biochemical analyzer or biological testing system to aid in sample testing. The exemplary decapper, includes a motor that is operable to lower a latch mechanism to engage with a cap of a sample tube and then raise the latch mechanism to remove the engaged cap. As the latch mechanism is lowered, a retractor portion also descends and causes a set of grippers to extend and grip the sample tube. As the latch mechanism is raised, the set of grippers apply a corresponding pressure to hold the sample tube in place while the cap is removed. Once removed, the cap rests within the latch mechanism and the set of grippers are retracted by the raising retractor. As the latch mechanism returns to its origin position, an ejector arm is operated causing the cap to be ejected from the latch mechanism.

The present invention discloses a method for obtaining the optimal path for a robot arm to open a fuel cap, and relates to the technical field. The present invention comprises the following steps: defining the coordinate systems of the robot arm and the fuel cap; defining the coordinate systems of the intermediate process of the robot arm opening the fuel cap; calculating the joint angle of the robot arm corresponding to the movement of the robot arm; and calculating the optimal path for the robot arm to open a fuel cap. obj The z-axis unit vector of the coordinate system is at O paw_temp Description in coordinate system; find O b The z-axis unit vector in the coordinate system is at O paw_temp The results are described in the coordinate system; based on the results, the process of the robot arm moving from its current position to the end of the fuel cap handle is derived. The present invention uses an algorithm to achieve the optimal path for the robot arm to open the fuel cap using the rotatable jaws on the fixture until the jaws align with the fuel cap handle, allowing the jaws to rotate and unscrew the fuel cap, ensuring that singularities and breakpoints are avoided as much as possible during the movement of the robot arm.

The present invention discloses an electric jar opener comprising a housing; a first clamping jaw group; a second clamping jaw group; a movement mechanism. The first clamping jaw group comprises two oppositely-disposed mutually facing first clamping jaws for clamping a can body, the second clamping jaw group comprises two oppositely-disposed mutually facing second clamping jaws for clamping and screwing a lid; the movement mechanism comprises a motor and a differential with two outputs; a first output of the differential is in transmission connection to the first clamping jaws and a second output thereof is in transmission connection to the second clamping jaws. By use of the differential, the first output of the differential is in transmission connection to the first clamping jaws and the second output thereof is in transmission connection to the second clamping jaws, so that the whole machine operates in a balanced and stable manner.

The utility model relates to the technical field of battery production, and discloses a barrel opening device for a battery slurry barrel. The barrel opening device of the battery slurry barrel comprises a barrel opening assembly and an operation arm, wherein the barrel opening assembly comprises a barrel opening sleeve and a barrel opening bulge; the barrel opening sleeve and the barrel opening protrusion are both connected with the operation arm, the operation arm is rotated to drive the barrel opening sleeve and the barrel opening protrusion to rotate at the same time, and the barrel opening sleeve and the barrel opening protrusion are used for opening slurry barrel covers of different structures. The barrel opening device of the battery slurry barrel can be used for opening slurry barrel covers with different shapes more safely and quickly, is more labor-saving, has lower requirements on operators, and does not pollute materials in the slurry barrel.

The utility model relates to the technical field of blood collection tube uncovering, in particular to a blood collection tube automatic uncovering device which comprises a base plate, a supporting device used for placing a blood collection tube body is arranged on the upper portion of the base plate, and a clamping device and a detecting device which act on the blood collection tube body are arranged on the side edge of the supporting device. The supporting device comprises a rotating disc horizontally arranged on the base plate, a plurality of elastic test tube clamps are arranged on the upper surface of the rotating disc, and two height detectors used for detecting the height of a blood collection tube body are arranged on the side edge of the rotating disc. And the infection risk of manual operation and the possibility of cross contamination are greatly reduced.

This invention discloses a miniature canning and conveying device, comprising a conveying assembly, a capping assembly, a cap transfer assembly, a guardrail assembly, a filling assembly, and a sterilization assembly mounted on a substrate. The conveying assembly has an inlet end, an inlet conveying end, an outlet conveying end, and an outlet end, with the inlet and outlet conveying ends conveying in opposite directions. The capping assembly is positioned above the inlet and outlet conveying ends. The cap transfer assembly is positioned between the inlet and outlet conveying ends. The guardrail assembly is laid between the inlet and outlet conveying ends, forming a filling and inoculation station, a sterilization station, and a channel. The filling and sterilization assemblies are respectively positioned at the filling and inoculation stations and the sterilization station. The guardrail assembly includes a bottle pushing component. This invention enables the filling and inoculation of the medicine inside the isolator from outside the isolator, preventing contamination of the internal environment of the isolator and leaks due to manual operation.

The invention belongs to the technical field of photoresist sub-packaging, and discloses photoresist automatic canning equipment which comprises an equipment body, a roller line module, a cover opening and locking module, a filling module and an air return system, the equipment body adopts closed design, and a cover opening and locking area and a filling area are arranged in the equipment body; the roller line module extends to the equipment main body to be arranged, passes through the cover opening and locking area and the filling area, and is used for bearing and conveying a photoresist container; the cover opening and locking module is arranged in the cover opening and locking area and is used for opening and taking away a cover body of the photoresist container or installing and locking the cover body of the photoresist container; the filling module is arranged in the filling area and is used for injecting a set volume of photoetching liquid into the photoresist container; the air return system is used for forming a clean air flow field in the equipment body, and the cleanliness of the filling area is guaranteed. According to the full-automatic filling machine, full automation of cover opening, filling and cover locking is achieved, the safety and cleanliness of the filling process are improved, and the filling efficiency and the product quality are effectively improved.

The invention discloses a desktop type test tube plug automatic cover turning device which comprises a machine frame, a bracket, a clamping device and a rotary cover turning device are sequentially installed on the machine frame from bottom to top, the clamping device comprises clamping fingers, a clamping air cylinder for controlling the clamping fingers to move oppositely or oppositely is installed in the machine frame, and the rotary cover turning device is installed on the bracket. And the rotary cover turning device comprises a cover turning arm and a rotary oscillating cylinder for controlling the cover turning arm to rotate. According to the invention, the cylinder is used for driving and controlling to clamp and flip the test tube, compared with a traditional mechanical structure or a complex electric adjusting device, the driving is reliable, the parameter adjustment is convenient, and the flip efficiency is improved. The bracket fixes the test tubes, the height of the bracket is adjustable, and opening of test tube covers of different specifications can be achieved. The whole structure is simple, the automation degree of test tube uncovering can be improved, manual operation is reduced, operators are prevented from making contact with reagents, the sample pollution risk is reduced, and the test tube uncovering device is suitable for biological and chemical laboratory scenes and the like.

A garment configured for retaining a beverage container and for use on the lower body of a user. The garment includes a pocket coupled to the garment, and a tab coupled to the garment at first and second locations. The pocket includes a lower closed edge, first and second closed side edges and an open upper edge. The pocket is sized to removably receive and retain the beverage container. The first and second locations are spaced apart from each other to define an unattached region of the tab between the first and second locations. The unattached region configured for facilitating the opening of the beverage container by the user.

The utility model discloses a batch uncovering device applied to a single urine discharge test tube group. The batch uncovering device comprises a main shell and a test tube clamping unit, wherein the test tube clamping unit is right opposite to the direction of an outer tube group push-in groove and is arranged in an inner cap body processing cavity; a batch cap screwing unit and an auxiliary cap removing unit; a cap body storage box; a urine test tube set is pushed in along an external tube set pushing-in groove, urine test tubes are clamped in batches through a test tube clamping unit, a second clamping air cylinder pushes forwards to enable a belt-driven cap screwing assembly to make close contact with caps and rotate the caps, the caps completely screwed away from the urine test tubes are subjected to auxiliary pulling away through an auxiliary cap removing unit, and the cap containing box contains the pulled-away caps. Aiming at the current situation of single urination test tube arrangement which is commonly used in clinic, under the condition that an original arrangement mode is kept, a single-row tube set batch uncapping automatic system is arranged, and the integrated action integration of test tube clamping, friction type batch cap screwing, cap body auxiliary pulling-away and cap body containing is achieved, so that the device is closer to the current clinical use habit, and the overall working efficiency of uncapping is improved.

The invention discloses a multipurpose cover opening and closing device for a shielding tank, and relates to the technical field of shielding tank opening, which comprises a rack, a lifting driving mechanism, a lifting frame, a positioning ring, a rotary driving mechanism and a claw head assembly, the lifting driving mechanism is arranged on the rack; the lifting frame is connected with the lifting driving mechanism and is driven by the lifting driving mechanism to do lifting motion; the positioning ring is fixedly connected to the bottom of the lifting frame and is used for radially positioning the shielding tank body; the rotary driving mechanism is mounted on the lifting frame; the claw head assembly comprises a transmission shaft, a switch cover claw head and an elastic pressure applying part; the transmission shaft is in transmission connection with the rotation driving mechanism. The cover opening and closing claw head is connected to the bottom end of the transmission shaft. The elastic pressure applying part is used for providing elastic force tending to move downwards for the switch cover claw head. According to the cover opening and closing device, through cooperation of lifting and rotating motion and stable contact guaranteed by the elastic pressing part, whole-process automation of cover opening and closing operation of the shielding tank is achieved, and operation safety, precision and efficiency are remarkably improved.

The invention relates to the field of automatic operation of dispensing equipment, in particular to a penicillin bottle uncapping method and system for an automatic dispensing machine, and the method comprises the steps: firstly setting a mechanical arm movement XYZ three-dimensional space coordinate system, calibrating a reference coordinate, and setting a slope and an intercept calculation target value in a segmented manner according to the diameter of a bottle body; the bottle body diameter and the bottle body total height of the penicillin bottle are obtained through visual recognition, a compensation value is calculated, the actual in-place coordinate point of the center position of the front-end clamping jaw is corrected, and the mechanical arm pose parameters and the actual in-place coordinate point are input into a mechanical arm control system to control the mechanical arm to execute uncapping operation; the uncovering system comprises a visual identification module, an uncovering mechanism, a mechanical arm control system, a front-end clamping jaw and the like. The technical effects that the position of the mechanical arm can be accurately corrected according to the diameters of different bottle bodies, and precise uncovering operation on the penicillin bottles is achieved are achieved.

The utility model discloses a barrel cover screwing device which is used for screwing a barrel cover in a filling production line and comprises a first fixing piece fixedly connected with the filling production line and a barrel opening positioning mechanism which comprises a first air cylinder and a positioning cover. The output end of the first air cylinder is fixedly connected with the first fixing piece, a second fixing piece is fixed to the first air cylinder, the positioning cover is connected with the second fixing piece in a sliding mode, and the device further comprises a lifting mechanism and a rotating mechanism. The barrel opening can be firstly positioned and pressed through the positioning cover, then the barrel cover is rotated through matching of the cover locking head and the barrel cover, and barrel cover screwing of a deformed barrel can be achieved.

To provide a plastic bottle opener that allows a cap of a plastic bottle to be opened with light force and closed with moderate force when it is difficult to open.SOLUTION: A plastic bottle opener of the present invention comprises an angled wedge 2 provided on a cylindrical attachment 1 and includes an extendable lever 3 that can be adjusted using the principle of a lever. It comprises the attachment that is attached to a lid of a plastic bottle, the extendable lever connected to the attachment, and several wedges mounted at an angle on the attachment. The wedges can also use standard tapping screws. When opening a cap, a tip of the wedge pierces an outer circumference of the cap, allowing a grip with greater force. This enables stable opening without slipping. When closing the cap, a threaded portion on a side of the wedge provides resistance and slipping occurs with greater force, allowing closure with moderate force.SELECTED DRAWING: Figure 2

The utility model relates to the technical field of pneumatic logistics conveying bottle conveying, in particular to medical conveying bottle discharging and transferring equipment. The material box is used for receiving the medical materials falling off from the medical conveying bottle in the uncovering state. And the right loading device is used for receiving the medical conveying bottle which is to be uncapped and is in the unloading state and is transferred to the bottle cap opening device again. And the left loading device is used for receiving the medical conveying bottles which are transferred by the bottle cap opening device and are in the unloading completion state and enabling the medical conveying bottles to flow back to the pneumatic receiving pipe again. And the transferring device is used for transferring and transferring the medical transmission bottles among the devices. Thus, on one hand, the circulation and discharging efficiency of the medical conveying bottles is improved, and medical workers do not need to make contact with the medical conveying bottles in the whole process; and on the other hand, intervention of medical workers is not needed, the medical conveying bottles can be opened / reset only under the action of the medical conveying bottle discharging and transferring equipment, and medical materials automatically fall into the material box.

The utility model relates to the technical field of medical experiment tools, in particular to an automatic cover opening tool which comprises a lower shell, an upper shell, a battery, a mounting plate, a motor, a connecting rotating shaft, a profiling head, a control circuit board, a cover pushing mechanism, an electric quantity indicator lamp, a charging port, a starting switch, a cover opening button and a cover screwing button. By means of the structural design that the profiling heads are detachable and replaceable, automatic uncapping and uncapping of freezing tubes of various specifications can be achieved by replacing different profiling heads, good compatibility is achieved, product assembling consistency is kept, automatic uncapping and uncapping of a plurality of bottles can be achieved at a time through the arrangement of the multiple profiling heads, and the production efficiency is improved. Meanwhile, manual contact with the cryopreservation tube is avoided, cleanliness and no pollution of the environment in the uncovering process are guaranteed, manual work is reduced, the uncovering efficiency is improved, the experiment efficiency is improved, and good practicability is achieved.

The utility model discloses a multifunctional cap opener for a biological experiment, which is adaptive to opening and closing requirements of an EP tube, a centrifugal tube, a reagent bottle and a PCR (Polymerase Chain Reaction) row tube by integrating a slit, a notch, a gradually-changed groove and an arch-shaped edge structure. The design of the asymmetric tooth-shaped protrusions and the lever is adopted, the operation intensity is remarkably reduced, and the light weight (smaller than 70 g) and the low cost are achieved by combining the hollowed-out part and the ergonomic holding part. The tool is suitable for high-flux experiment scenes.

The utility model discloses a bottle cap screwing manipulator which comprises a bottle cap clamping mechanism and a driving mechanism, the bottle cap clamping mechanism comprises a cap screwing clamp and an opening and closing air cylinder, and the cap screwing clamp is connected with the opening and closing air cylinder; the cap screwing clamp is of a multi-petal type clamp structure, and all petal clamps of the cap screwing clamp are driven by an opening and closing air cylinder to be opened or closed. A clamping block is arranged along the inner side face of each clamp, and the cap screwing clamp makes contact with a bottle cap through the clamping blocks. The driving mechanism is connected with the opening and closing air cylinder through a transmission shaft so as to drive the opening and closing air cylinder and the cap screwing clamp to rotate. In this way, the opening and closing air cylinder drives the cap screwing clamp to be opened or closed, the bottle cap is clamped in the closing process, the servo motor drives the cap screwing clamp to rotate after the bottle cap is clamped, and the purpose of screwing or unscrewing the bottle cap is achieved. The structure is simpler, gear transmission is not needed, the number of parts is smaller, and cost is lower; and the clamping blocks are matched with the cap screwing clamps, so that the bottle cap can be clamped in a surrounding and wrapping posture, and the bottle cap can be clamped more tightly and cannot be damaged.