2456 results about "Belt drive" patented technology

An incubator can include a body, a bed supported by the body, and a canopy defining an interior chamber that includes the bed. The incubator can include any combination of various features configured to reduce sound energy inside the incubator. The incubator can include a passive radiator, a Helmholtz resonator, a meta material absorber, an active noise cancelation system, a vented door latch assembly, an acoustically permeable seal, a pressure relief valve, a lift mechanism that uses a belt drive, double paned canopy walls, a bin with insulating compliant elements, a manual pressure release valve, a pressure differential notification system, non-parallel or curved canopy walls, a mattress with reticulated foam, and / or an acoustic filter.

A tensioner for a belt has a fixed part provided with a pivot defining an axis (A), an eccentric arm rotatably mounted on the pivot about the axis (A), a pulley rotatable about an axis (B) defined by the arm and configured to cooperate with a timing belt, a first spring-damper assembly interposed between the arm and the fixed part, and a second spring-damper assembly configured to act between the arm and the fixed part from a predetermined angle of rotation of the arm with respect to the fixed part.

The utility model relates to a semiconductor wafer box transfer device which has high precision, high stability and high automation level and is suitable for wafer box transfer in the semiconductor production process. The device comprises a connection table arranged in a bottom area, the connection table is provided with a power assembly and a groove transmission structure which are used for lifting and transmitting a wafer box, and the periphery of the connection table is provided with an anti-vibration device made of a flexible material. And the crown block is positioned at the upper part of the device and moves along the guide system track so as to ensure smooth transfer of the wafer box among different areas. A manipulator is arranged on one side of the connection table, the tail end of the manipulator is provided with a grabbing device of an open type U-shaped structure, and a positioning column is arranged to be matched with a positioning hole in the bottom of the wafer box, so that the positioning accuracy of the wafer box is guaranteed. An automatic induction device is installed above the grabbing device and cooperates with an inductor to monitor the position of the wafer box in real time. The power assembly adopts a belt transmission system to ensure stable transmission of the wafer box.

The invention provides a magnesium-aluminum alloy casting molding cooling device, which relates to the technical field of casting process equipment, and comprises a cooling pool, a mounting rack fixed on the top of the cooling pool, a chain conveying belt arranged on one side of the mounting rack, a plurality of clamping mechanisms arranged at the bottom of the chain conveying belt in a transmission manner, and a cold air mechanism arranged on the cooling pool, a water circulation frame is arranged on the side, away from the cold air mechanism, of the top of the cooling pond. When a limiting block slides to the end part of the inner wall of a concentric-square-shaped limiting frame, a second bevel gear is meshed and matched with a first bevel gear, a third bevel gear is meshed and matched with a fourth bevel gear, and a started chain conveying belt drives a filtering assembly to move towards one side of a low filtering plate along a threaded rod, so that the whole filtering assembly moves towards the other side of the cooling tank; the difficulty of cleaning metal scraps in the cooling pond is reduced, water impurities in the cooling pond can be concentrated in the filtering assembly, and power output in the impurity collecting process is reduced.

The invention relates to the technical field of supercritical foaming, in particular to an organic silicon supercritical foaming device and method.The organic silicon supercritical foaming device comprises a conveyor, a supporting plate is fixedly installed on the conveyor, a conveying belt is movably installed on the conveyor, an upper die mechanism is arranged on the conveyor, and a plurality of pairs of lower dies are symmetrically and fixedly installed on the conveying belt; each lower mold is fixedly provided with two guide shells, the upper mold mechanism is provided with a sealing mechanism, the sealing mechanism comprises a pair of connecting frames arranged on the upper mold mechanism, and a side plate which is in sliding connection with the guide shells is jointly and fixedly installed between the pair of connecting frames; the conveyor is controlled to operate to drive the conveying belt to move, the lower molds are separated from the side plates, the conveying belt drives the lower molds to move to the lower end of the conveyor, in the moving process, the pair of lower molds move mutually, and under the gravity of a foaming material, demolding and discharging work of the foaming material is facilitated.

The invention discloses metal bushing press-fitting equipment, which relates to the technical field of metal automatic assembly, and has the technical key points that the metal bushing press-fitting equipment comprises a bushing feeding mechanism: a discharge port of a vibration disc is connected with an inclined first feeding slideway and then connected with a positioning groove, the bottom of the vibration disc is provided with a strip-shaped turnover port and a transmission belt, a belt driving assembly drives the belt to operate, and the direction is vertical to the feeding direction; a height limiting rod is arranged on the position adjusting groove, so that the lining topples over, and the lower portion is funnel-shaped and connected with a second feeding slide way; the bottom of a second feeding slide way is connected with a to-be-taken groove, the width in the groove is equal to the outer diameter of the bushing, and a limiting plate and a bushing adsorption assembly are arranged at one end and form a rectangular groove; according to the press-fitting mechanism, a workbench is provided with a first positioning assembly, an upper fixing frame top beam is connected with a lifting press-fitting assembly through a translation assembly, and a bottom movable part is connected with a clamping assembly and used for taking the lining. According to the automatic press-fitting device, the positioning precision of feeding and taking can be improved, and the efficiency and effect of automatic press-fitting are guaranteed.

The invention relates to a clamping telescopic mechanism for large cylindrical battery production materials, and belongs to the technical field of battery production material transfer equipment. The clamping telescopic mechanism comprises a chassis, two fixed arms are slidably arranged on the chassis, and the opposite sides of the two fixed arms are slidably connected with first telescopic arms; the opposite sides of the two first telescopic arms are slidably connected with second telescopic arms, and synchronous belt transmission assemblies are arranged on the first telescopic arms; each second telescopic arm is provided with a driving piece, the driving piece is connected with a deflector rod, the opposite sides of the two second telescopic arms are provided with limiting plates, and the deflector rods are arranged close to the extending ends of the second telescopic arms compared with the limiting plates; a clamping assembly is installed on the chassis, a supporting assembly is further installed on the chassis, the supporting assembly is located between the two fixing arms, and the supporting assembly is used for supporting a tray. The telescopic pallet fork has the effects that the adaptability of the telescopic pallet fork to trays with different heights is improved, and stability and reliability are kept in the heavy-load transfer process.

The invention relates to the technical field of coal conveying, and discloses coal production and processing conveying equipment which comprises a conveying belt, a driving roller arranged on one side of the conveying belt, a plurality of supporting frames arranged in the middle of the conveying belt, a mounting plate arranged in the middles of the supporting frames and a plurality of transmission rollers arranged on the tops of the supporting frames and distributed in a V shape. The conveying belt drives the transmission rollers to rotate through friction force, the driving parts are arranged on the two sides of the middle transmission roller, and the two vibration parts are arranged in the middles of the two driving parts. The uniformity of the coal can be optimized through the arranged vibration component, the accumulation state of the coal can be broken through continuous vibration, and the coal can be evenly spread on the conveying belt. Particularly, when the coal quantity is large, vibration is enhanced, accumulated coal can be quickly dispersed, local over-thickness or over-thickness is avoided, the stability of subsequent procedures of screening, washing, combustion and the like is ensured, and the overall treatment efficiency is improved.

The invention relates to a pre-filling needle horizontal conveying line and method in the technical field of vaccine packaging. The pre-filling needle horizontal conveying line comprises a belt pulley assembly, a photoelectric detection assembly, a driven round belt, a linkage round belt, a driving round belt, an adjusting assembly, a guide rail assembly, a feeding fence, a connecting fence, a discharging fence, a power assembly and a positioning assembly. The belt pulley assembly is used for transmission; the driving round belt drives the linkage round belt to move; the linkage round belt drives the driven round belt to move; the photoelectric detection assembly is used for detecting the pre-filling needle on the conveying belt; the adjusting assembly is used for adjusting the width of the conveying line. The effect that the whole conveying line is driven by one driving assembly is achieved, and friction between a belt and a pre-filling needle caused by errors of independent movement of multiple driving assemblies is avoided; the size of the conveying belt is greatly reduced, the conveying speed is greatly increased, and the width of the conveying belt can be adjusted through the adjusting assembly.

The utility model belongs to the technical field of packing tape packers, and particularly relates to a tape storage mechanism of a banding machine and the banding machine, which comprises a moving component, a detection roller, a detection support, a damping component and a trigger device, in the process that the moving assembly retreats the belt, the belt is firstly retreated, then the tightened belt drives the detection support and the belt disc of the belt storage mechanism to be switched from the locking state to the rotation state, and the scheme of retreating the belt and then storing the belt is achieved. When the detection support moves, the trigger device indirectly or directly controls the tape reel to release the tape. According to the design, the tightening degree of the belt in the packaging process is controlled by the damping component, and the whole belt withdrawing structure is simplified; and the lacing force of the belt can be conveniently adjusted as required, so that the universality and the use convenience of the lacing machine are improved.

The invention discloses a crawler-type wall-climbing robot single body and a crawler-type wall-climbing robot. Each crawler-type wall-climbing robot single body comprises a rack, a magnetic crawler belt, a crawler belt driving device and a tensioning mechanism, the magnetic crawler belt, the crawler belt driving device and the tensioning mechanism are installed on the rack, the magnetic crawler belt can provide magnetic adsorption force, and the crawler belt driving device is in transmission connection with the magnetic crawler belt and provides driving force for the magnetic crawler belt; the tensioning mechanism is connected with or makes contact with the magnetic crawler belt, and the tensioning mechanism can be driven by external force to stretch out and draw back in the selected direction and provide tensioning force for the magnetic crawler belt. The wall-climbing robot is easier and more efficient to manufacture, assemble and maintain, and meanwhile, different modules can be flexibly configured in different application scenes, so that the capacity of customized production and quick response to market requirements is achieved.

The utility model discloses frame aluminum profile feeding equipment which comprises a support, a first conveying belt used for placing aluminum profiles is arranged in the support in a lifting mode in the vertical direction through a lifting mechanism, and a second conveying belt driven by a driving motor fixedly arranged on the support is arranged in the support. The first conveying belt is provided with a limiting and clamping mechanism for limiting and fixing the aluminum profiles which are placed on the first conveying belt and have different sizes in the left-right direction and the up-down direction during feeding, and the limiting and clamping mechanism comprises a buffering assembly for buffering the aluminum profiles to prevent deformation during clamping. The problems that in the prior art, when aluminum profiles are lifted and transported, the materials need to be held manually to ensure the stability of the materials, an effective limiting and fixing device is lacked, and the aluminum profiles are prone to sliding off due to shaking or external force are solved.

A radio-controlled vehicle, in particular a radio-controlled lawn mower, comprising: a frame; an engine; at least one rolling unit to cause the radio-controlled vehicle, in use, to move on a ground; a drive system for each rolling unit; a remote control; a control unit, which exchanges signals with the remote control, the engine and each drive system; a belt drive assembly which is interposed between the engine and each drive system and is operated by the engine so as to cause the rotation of each drive system.

The invention relates to the field of watch glass film pasting and detection, in particular to a watch glass module film pasting and detection device. Comprising an AOI detection module, an optical detection module and a film pasting module, and the film pasting module comprises a turnover mechanism and a stacking station. The AOI detection module is used for conveying products through the turntable and detecting PCBA surface circuits and welding spots; and the optical detection module identifies defects such as scratches and bubbles on the glass surface. The film pasting module comprises a rotary table, dust removal, film pasting and rolling are sequentially completed, floating dust on the surface of a product is removed through an inclined air nozzle, accurate film pasting is achieved through the three-axis moving module and an elastic suction cup, and bubbles are removed through rolling of an elastic rolling shaft. The turnover mechanism turns over by means of vacuum adsorption and belt transmission, and the stacking station sorts OK products and NG products according to detection results. The device can replace manual operation, solves the problems of potential health hazards, low efficiency and unstable quality of manual detection, many bubbles of manual film pasting, inaccurate positioning and the like, improves the production efficiency and the product quality, and reduces the production cost.

The invention relates to automobile electronic component assembling and carrying equipment. The device is composed of a supporting mechanism, a feeding mechanism, a material dispersing mechanism, a vibration feeding machine and a feeding safety mechanism. The hopper lifts the capacitor shell to the conveying pipe through the conveying belt and the material plate; after being limited, the baffle enters the vibration feeding machine through the discharging pipe; the angle of the guide plate is adjusted through linkage of a threaded rod, a two-way rack rod and a second gear, and the drop point range can be adjusted in cooperation with a conical material scattering rod. The vibration feeding machine completes sorting and is guided out through the extending discharging plate; during feeding, the cover plate drives the eccentric bolt, the sliding rod, the swing cylinder and the swing plate through the first gear and the fluted disc, so that the I-shaped sliding sleeve enables the second coupler to be disengaged from the first coupler, and driving of the conveying belt is stopped; after closing, meshing is performed under the action of the spring; the device gives consideration to both low-material-level rapid feeding and high-material-level stable material storage, the feeding consistency is improved, and the operation safety is enhanced.

The invention relates to the technical field of injection molding molds, in particular to a new energy automobile injection molding part burr-preventing injection molding mold which comprises a rack, a rotary indexing table capable of periodically rotating by 90 degrees is installed on the rack, and the rotary indexing table is rotationally sleeved with a rotatable inner gear ring; a material injection station, a cooling station, an outer polishing station and an inner polishing station are sequentially arranged on the machine frame in the clockwise direction, linkage pieces in linkage with the inner gear ring are arranged at the positions, corresponding to the material injection station, the cooling station and the outer polishing station, of the machine frame, and two bottom die mechanisms are arranged on the rotary indexing table. The full-automatic four-station grinding machine has the beneficial effects that the gapless precise switching of four stations of material injection, cooling, external grinding and internal grinding is realized through the combination of the rotary indexing table capable of periodically rotating by 90 degrees and the intermittent gear transmission system in cooperation with a synchronous belt driving and internal gear ring linkage mechanism.

The invention belongs to the technical field of semiconductor processing, and particularly relates to a semiconductor cavity high-precision polishing machine which comprises a guide rail base, a motor, a shaft sleeve, a supporting plate, a transmission cylinder and a polishing assembly which are fixedly connected. The grinding assembly comprises a support, a protective shell, a shell, a take-up box, a spliced grinding belt, a supporting roller and an adjusting roller. The adjusting roller pulls the spliced grinding belt, the spliced grinding belt drives the second sliding roller on the supporting roller to slide along the first sliding groove, the size of the grinding assembly is reduced, the grinding assembly can easily stretch into a small-caliber cavity, the operation space of the grinding assembly is increased, and the probability that the grinding assembly collides with the cavity is reduced. While the size of the grinding assembly is reduced, the coarse grain grinding belt is switched to the fine grain grinding belt, the small-caliber cavity is polished through the coarse grain grinding belt, the polishing precision can be ensured, and the situation that the precision of a high-precision device is reduced due to the fact that the surface roughness of the small-caliber cavity is too high is avoided.

The utility model discloses a synchronous belt transmission sewing machine which comprises a sewing machine body, the sewing machine body is provided with a machine base, a sewing machine head and a rotating shuttle assembly, and a front section main shaft, a rear section main shaft, a front section auxiliary shaft and a rear section auxiliary shaft are arranged on the machine base. A lifting driving device is arranged on the machine base and drives the sewing machine head to ascend and descend so as to adjust the height of the sewing machine head. The front-section main shaft and the front-section auxiliary shaft are arranged on the sewing machine head; the rear-section main shaft is in transmission connection with the front-section main shaft through a first synchronous belt transmission device; the rear-section countershaft is in transmission connection with the front-section countershaft through a second synchronous belt transmission device; therefore, compared with a matching mode of protrusions and grooves, transmission matching among the first synchronous wheel, the second synchronous wheel, the first synchronous belt, the linkage synchronous wheel, the second synchronous belt and the sewing machine head has the advantages that sliding is avoided during sewing, the transmission ratio is accurate, the transmission efficiency is high, the sewing needle pitch is uniform, and the sewing quality consistency is good. And the working process of the sewing machine head is more stable.

The invention relates to the technical field of laser cutting machines, in particular to a grinding machine tool for grinding brake discs, which comprises a square casing, windows are arranged on two sides of the square casing, a parallel moving device is arranged on the inner side wall of the square casing, and a coaxial double-rotation grinding device is arranged on the parallel moving device. An automatic rotating and lifting brake disc integrated device is arranged in the square machine shell. A single motor for realizing rotation and lifting functions of the brake disc is used for driving, in a lifting driving state, a magnet exciting coil of an electromagnetic control device is electrified, a driving disc is attached to a driven disc by utilizing electromagnetic attraction, power is transmitted to a screw rod through belt transmission, and lifting of the brake disc is realized; when the automatic rotation state is switched, the friction plate is separated through power failure, the rotating shaft directly drives the gear column to drive the brake disc to rotate, and compared with traditional multi-motor driving, the number of motors and transmission parts is reduced, the equipment cost and energy consumption are reduced, meanwhile, the machine tool size is reduced, and the space utilization rate is increased.

The invention relates to the technical field of seedling planting machines, and provides a Chinese herbal medicine seedling planting machine which comprises a moving frame, a handle is fixedly connected to one side of the top end of the moving frame, and moving wheels are arranged at the bottom end of the moving frame; a motor is started to drive a belt to rotate, the belt drives a second rotating wheel to rotate, the second rotating wheel drives a rotating rod to rotate, the rotating rod drives a rotating belt to rotate, the rotating belt drives a rake rod to climb on soil, and the soil is loosened, so that a conical soil inserting head can be more easily inserted into the soil; the harrow rod can stir hard objects such as branches or stones on soil, then the hard objects are shoveled up through the harrow rod, then the harrow rod is driven to convey upwards through rotation of the rotating belt, and when the harrow rod is located at the top end of the rotating belt, the hard objects in the harrow rod slide into the collecting box to be collected through inertia of the hard objects. Therefore, the conical soil inserting head can be prevented from being contacted with a hard object when being inserted into the soil to damage the port of the conical soil inserting head so as to influence planting.

The invention relates to the technical field of tree monitoring, in particular to an intelligent tree health monitor and a monitoring method thereof. Comprising a placement box; an air extracting pump is mounted in the placement box, and a hinge plate is placed at the upper end of the placement box; the number of the hinged plates is two. According to the device, through cooperation of a belt and a hinged plate, a driving motor can drive the belt attached to a tree trunk to climb upwards along the tree trunk, so that the belt drives a carbon dioxide monitor and an oxygen monitor to ascend synchronously through the hinged plate, and compared with the situation that the gravity center of the device continuously ascends through a multi-section hydraulic push rod, the device is more convenient to use. The hinge plate is attached to the trunk, so that the trunk provides stable support for the hinge plate, even if external force interference such as strong wind is encountered, the hinge plate cannot lose balance and topple due to the fact that the hinge plate is supported by the trunk, the device is safer and more reliable in the rising and monitoring process, and the service life of the device is prolonged; and the cost for maintaining and replacing the equipment is reduced.

The invention relates to a method for determining at least one physical characteristic variable of a belt drive and / or of a belt in the belt drive in a static and / or dynamic operating state, to a computer program for carrying out such a method, and to a device for determining at least one physical characteristic variable of a belt drive and / or of a belt in a belt drive in a static and / or dynamic operating state.

The utility model discloses a multi-station shredded konjac knotting machine which comprises a machine table, and a shredded konjac delivery assembly, a knotting mechanical arm assembly and a konjac knot sending-out assembly are arranged on the machine table. The shredded konjac delivery assembly comprises mounting plates which are mounted on the machine table and distributed front and back, a first conveying frame is mounted between the mounting plates, a feeding belt driven by a first motor is mounted in the first conveying frame, and a shunting mechanism used for shunting shredded konjac on the feeding belt is mounted on the first conveying frame; the knotting manipulator assembly comprises a mounting seat fixed on the machine table, a plurality of mechanical arms arranged front and back are mounted on the mounting seat, the double-station knotting and cutting work of the konjak shreds is realized through the konjak shred delivery assembly and the konjak knot sending-out assembly, the efficiency is greatly improved, and the production cost is reduced; according to the utility model, the feeding belt is provided with the shunting mechanism, so that the konjac shreds in the feeding process are shunted, winding is avoided, and the shutdown frequency is reduced.

The invention provides vertical heat treatment equipment and a conveying device thereof, the conveying device comprises a device main body, a transmission belt mechanism and a stop mechanism, the transmission belt mechanism is used for transmission between a driving part and a driven part of the device main body, and the transmission belt mechanism comprises a transmission belt; the stop mechanism comprises a stop part and a matching assembly, the stop part is fixedly connected with the driven piece, and the stop part is provided with a stop structure; the matching assembly comprises a retainer and enables the retainer to be far away from the retaining structure under the support of the transmission belt, and when the transmission belt is broken, the retainer is matched with the retaining structure to stop rotation of the driven part. In the stopping process of the conveying device, a detection device does not need to detect signals, and stopping can be achieved without signal control, so that the reliability of the stopping process is improved, and the cost of the conveying device is reduced.

A harvester for removing cannabis flower from stalks includes a blade follower iris that adjusts the size of the flower-stripping opening to correspond to the diameter of the stalk. The size of the opening may be controlled by centrifugal and spring forces that cause the iris to open and close. In addition, an improved stalk-pulling belt drive conveyor system utilizes two relatively floating, releasably coupled belt systems to pinch and pull the stalk through the blade follower iris.

The utility model discloses nylon modified particle waste material recycling and reprocessing equipment which comprises a box body, a first crushing roller, a first gear and a first belt wheel are installed on one side of the box body through a rotating mechanism, a second gear is installed on the surface of the first gear in a meshed mode, and a crushing mechanism is arranged on the inner wall of the second gear. A first crushing roller, a first gear and a first belt wheel are driven to rotate through a rotating mechanism, the first gear drives a second gear to rotate, the first crushing roller and a second crushing roller are matched to crush nylon modified particles, meanwhile, the first belt wheel drives a synchronous belt to rotate, and the synchronous belt drives a second belt wheel to rotate; the feeding pipe can be driven by the reciprocating movement mechanism to reciprocate, the position of the feeding pipe can be adjusted, nylon modified particles can conveniently fall into the position between the first crushing roller and the second crushing roller through different positions, and the first crushing roller and the second crushing roller can be fully used.

The invention relates to the technical field of door and window cleaning, and particularly discloses an aluminum alloy door and window cleaning device which comprises a frame body. The cleaning assembly comprises a mounting frame arranged on the frame body, a plurality of mounting rollers rotationally matched on the mounting frame, a crawler belt wound on the plurality of mounting rollers and a cleaning sponge used for cleaning doors and windows, the cleaning sponge is arranged on the peripheral surface of the crawler belt, and an adjusting box rotationally matched with the frame body is arranged on the frame body. The adjusting box is provided with a clamping assembly used for clamping the door and window, the frame body is provided with a driving part used for driving the clamping assembly to rotate, when the driving part drives the clamping assembly to rotate, the clamping assembly drives the door and window to rotate in the vertical direction, meanwhile, the mounting roller drives the crawler belt to rotate, and the crawler belt drives the cleaning sponge to rotate. The doors and windows are cleaned; according to the aluminum alloy door and window cleaning device, the door and window cleaning effect can be improved.

A sorter system is configured to sort objects disposed on a conveying surface to multiple locations. The system includes a frame, a plurality of carriages each having a motor, a belt, and a plurality of pulleys. The sorter system includes a power line extending through the frame and power pickups on one or more carriages to receive power from the power line and provide power to actuate the belts of two or more carriages. The sorter system also includes a control line extending through the frame and one or more master carriages configured to receive control signals from a sorter controller system to control actuation of the belts of two or more carriages. The carriages may include a belt drive system configured to reduce the widths of the carriages. The belt drive systems may drive the belts on-center to reduce the torque and energy required to actuate the belt.

The utility model relates to the technical field of water supply equipment, and provides an emergency safe water supply device which comprises a water storage tank and a filtering tank, a moving mechanism is arranged at the bottom of the water storage tank and the bottom of the filtering tank and used for moving the water storage tank and the filtering tank to a use site, and a cleaning mechanism is arranged at the top of the water storage tank and the top of the filtering tank. The cleaning mechanism is used for cleaning the interiors of the water storage tank and the filtering tank. A push handle is held and pushed by hand, under the action of universal wheels, the push handle is moved to a use site and is convenient for a user to carry, a motor drives a synchronous wheel I to rotate, a synchronous belt is linked with a synchronous wheel II to rotate, a U-shaped scraping plate I rotates in a water storage tank, and a U-shaped scraping plate II rotates in a filtering tank; the cleaning device is used for scraping and cleaning the inner walls of the water storage tank and the filtering tank, water dirt is effectively prevented from contaminating the inner side walls of the water storage tank and the filtering tank, and the storage efficiency of drinking water is effectively improved.

The utility model relates to the technical field of plastic bottle leakproofness detection, and discloses a plastic bottle leakproofness detection device, which comprises a base and a clamping and pressing mechanism, the clamping and pressing mechanism comprises a positive and negative rotation motor, two groups of mounting racks, a limiting rack and a water receiving rack, the positive and negative rotation motor is connected with a synchronous toothed belt through a driving gear shaft, and the synchronous toothed belt is connected with the base. Sliding blocks are fixedly installed on the two sides of the two sets of installation frames, the two sets of installation frames are connected with clamping pieces through inserting holes, and a driving gear shaft can be driven to rotate forwards or reversely through rotation of a forward and reverse rotation motor, so that a synchronous gear belt drives the two sets of installation frames on a two-way screw rod to move oppositely or away from each other through a driven gear shaft; the sealing performance of the plastic bottles is detected by observing the condition in the water receiving frame, the plastic bottles with different diameters can be adapted through the movement of the mounting frame on the bidirectional screw rod, and meanwhile, a plurality of plastic bottles can be detected at one time, so that convenience and rapidness are realized.