40results about How to "Avoid bad" patented technology

This invention discloses an intelligent oil production system for electric pump wells, a tubing string, and a method of use, relating to the field of downhole communication technology. The system includes a surface control cabinet, an AC carrier cable, a wireless transceiver connector (upper and lower), a DC carrier cable, and downhole intelligent equipment. The surface control cabinet supplies power to the downhole intelligent equipment via the AC carrier cable, the wireless transceiver connector (upper and lower), and the DC carrier cable. The surface control cabinet performs bidirectional AC carrier communication with the wireless transceiver connector (upper and lower) via the AC carrier cable. The wireless transceiver connector performs bidirectional DC carrier communication with the downhole intelligent equipment via the DC carrier cable. This invention reduces the number of cables, solving the problem of the difficulty of laying multiple cables on the external tubing string during construction, while also reducing tubing string costs and production costs.

This utility model discloses an automatic oil injector, comprising: a sensor detachably connected to the automatic oil injector; a base having an internal mounting area and an external operation panel area; a pump mounted in the mounting area; a control board electrically connected to a first sensor, the first sensor being positioned corresponding to the operation panel area; the pump being electrically connected to the control board; the first sensor being used to collect information on the duration of the sensor's proximity to the first sensor; and an indicator light located in the operation panel area; the indicator light being electrically connected to the control board; the indicator light, according to a control signal from the control board, performing any one of the following actions: constantly on, off, flashing, or color changing. The first sensor is a Hall effect sensor, and the sensor is connected to a magnet. A lubricant container is also included, and the base is detachably connected to the lubricant container.

This disclosure provides a display panel and a display device. The display panel includes: a first substrate, comprising a first substrate, thin-film transistors, an organic planarization layer, a first metal layer, and a first transparent electrode layer. The first metal layer includes a first metal trace, a second metal trace, and a first metal connector. The first metal trace extends along a first direction, the second metal trace is disposed along a second direction, and a predetermined gap exists between the second metal trace and the first metal trace. The first metal connector is located within the predetermined gap, and both the second metal trace and the first metal trace are connected to the first metal connector. The orthographic projection of the first metal layer on the first substrate lies within the orthographic projection of the first transparent electrode layer on the first substrate. The second substrate includes a second substrate and a support pillar disposed on the second substrate. The orthographic projection of the support pillar on the first substrate lies within the orthographic projection of the first metal connector on the first substrate. The solution of this disclosure can avoid uneven display caused by touch.

The utility model discloses a kind of exhaust duct water vapor condensation collection devices, it is related to tobacco processing equipment technical field, exhaust duct inside close to the export of fan is parallel to the condensing plate of dense arrangement in flow direction, heat pipe is embedded into each condensing plate, with each condensing plate heat conduction connection fixed, and communicate to in circulating water cooling loop;The bottom of condensing plate is inclined plate structure by two sides respectively downward, and form the flow guide portion at the intersection of two side inclined plate structure, and the flow guide portion is directly below the liquid guide plate fixedly arranged with exhaust duct installation.The utility model condenses water vapor in high-humidity flue gas by condensing plate, and condensate is directly discharged exhaust duct by the flow of condensing plate and liquid guide plate in the position close to fan export;Circulating water cooling loop carries out circulating heat dissipation cooling to condensing plate, effectively solve the problem of exhaust duct inner wall scale caused by high-humidity flue gas, conducive to the control of equipment maintenance cost and the guarantee of production continuity.

The embodiment of the utility model provides a single-tower VPSA (Vacuum Pressure Swing Adsorption) oxygen generation device adopting a positive and negative pressure all-in-one machine, which comprises an oxygen generation tower body used for loading a filler and performing pressure swing adsorption operation, a filter arranged at a gas inlet of the oxygen generation tower body to filter impurities in gas entering the oxygen generation tower body, and a positive and negative pressure all-in-one machine, wherein the filter is provided with a rotatable flushing rod and a back flushing gas channel, reverse airflow generated in a positive pressure state is used for instantly flushing a filtering layer, a filtering material layer is arranged in the filter to intercept particles, a slag discharging pipe is arranged at the position, located at the lowest end of the filtering material layer, of the filter, and the slag discharging pipe is used for discharging slag. The slag discharge pipe is also provided with a control valve for controlling the on-off of the slag discharge pipe; the positive and negative pressure all-in-one machine is used for alternately applying vacuum extraction and pressurized filling; and the positive and negative pressure all-in-one machine is connected with the oxygen production tower body through a special connecting pipe. Through the scheme of the embodiment of the invention, unsmooth airflow caused by impurity accumulation can be reduced.

The utility model relates to the technical field of automobile production and manufacturing, in particular to an automobile top cover front cross beam balancing weight mounting and clamping device which comprises a balancing weight mounting device, a clamping device and a main trolley, and the balancing weight mounting device and the clamping device are arranged on the main trolley. The clamping devices are arranged on the two sides of the balancing weight mounting device; the balancing weight installation device comprises an installation support, a positioning assembly and a sensor assembly. The positioning assembly is adjustably arranged on the installation support. And the sensor assembly is arranged on the mounting bracket and is used for detecting the balancing weight. The counter weight mounting device and the clamping device are used in cooperation, the counter weight is positioned and clamped, correct assembly of the counter weight is achieved, particularly, the sensor assembly is arranged to detect the counter weight, bad products caused by the fact that accessory blocks are reversely mounted and mounting screws are not locked are prevented, outflow of bad products is effectively avoided, and the production efficiency is improved. And the probability of customer complaints is reduced.

This utility model discloses a motor base, a voice coil motor, and a camera device. The motor base has multiple outer side walls and a hollowed-out central area forming a reserved space. At least one outer side wall has multiple first adhesive-receiving grooves arranged at intervals along a first direction. Each first adhesive-receiving groove includes a first groove portion arranged along the first direction and at least one second groove portion arranged along a second direction. The second groove portion connects to the first groove portion, and the end of the first adhesive-receiving groove is arc-shaped. Therefore, by providing the first adhesive-receiving grooves, the motor base can prevent adhesive overflow into the reserved space, while increasing the surface area available for bonding, thus helping to avoid product defects.

The purpose of this utility model is to provide an electromagnetic pump soldering furnace, aiming to solve the problem of excessive heating time and solder ash buildup in existing electromagnetic pump soldering furnaces, which leads to defects. This utility model provides the following technical solution: an electromagnetic pump soldering furnace, including a pump body and a furnace body assembly. The furnace body assembly includes a shell and a furnace body. The furnace body includes an upper furnace body and a lower furnace body connected to each other. The upper furnace body is connected to the shell, and the lower furnace body is connected to the pump body. The upper furnace body is installed in the shell, and the lower furnace body is installed in the pump body. A groove is provided on the outer side of the lower furnace body, and an electric heating element is embedded in the groove. This utility model relates to the technical field of soldering furnace products.

The utility model relates to a graphics card heat resistance detection device which comprises a detection shell and a conveying belt device, a support is arranged at the bottom end of the detection shell, the conveying belt device penetrates through the detection shell, and the two opposite side ends of the detection shell are of opening structures for avoiding the conveying belt device and a graphics card. A heating pipe is arranged on the inner wall of the detection shell, the heating pipe extends along the inner side wall of the detection shell to form an annular structure, a display card detection mechanism is arranged in the detection shell, and a cooling mechanism is arranged at the end, penetrating out of the detection shell, of the conveying belt device; according to the display card detection device, a display card is conveyed into the detection shell through the conveying belt device and is heated through the heating pipe, the display card is detected through the display card detection mechanism, after detection is completed, the display card is moved out of the detection shell through the conveying belt device, and the display card obtained after detection is completed is cooled through the cooling mechanism. Therefore, the display card cannot be suspended in the air, and the display card is prevented from being bad due to deformation.

This invention relates to the field of water treatment technology and discloses a water softening device based on induced crystallization, including a tank. A filtration and cleaning mechanism for filtering and cleaning crystals is located at the rear end of the tank, and a stirring and cleaning mechanism for cleaning the inner wall of the tank and conveying crystals is located at the front end of the tank. The crystal conveying direction of the stirring and cleaning mechanism is coaxially aligned with the crystal filtration inlet of the filtration and cleaning mechanism, and the stirring speed of the stirring and cleaning mechanism is adapted to the filtration rotation speed of the filtration and cleaning mechanism, achieving continuous crystal conveying and integrated filtration. A flexible reciprocating scraper is installed inside the filter screen to achieve online descaling without stopping the machine, solving the problem of low automation in existing equipment for crystal discharge. A 1:2 meshing ratio between the semi-trapezoidal gear and the trapezoidal gear enables low-speed uniform rotation of the filter tank, preventing crystal seed loss with the filtrate and solving the problem of crystal seed loss in existing equipment.

The invention discloses a biogas slurry multi-stage thermal cracking system and a waste heat recovery method. The system comprises a feeding pump, a waste heat exchange device, a first-stage thermal cracking device, an interstage reheating device, a second-stage thermal cracking device and a tail gas spraying device which are sequentially connected through pipelines, the method comprises the following steps: pressurizing biogas slurry and then preheating the biogas slurry through a waste heat exchange device; carrying out low-temperature hydrolysis at 110-150 DEG C in a primary thermal cracking device to generate amino acid and reducing sugar and reduce the viscosity; rapidly heating to 160 DEG C to 180 DEG C through an interstage reheating device; the mixture enters a secondary thermal cracking device to be subjected to a high-temperature humification reaction, and a humic acid-like substance is generated; after reaction, high-temperature slurry returns to the waste heat exchange device to release heat, and a finished product is discharged after cooling. Through graded temperature control and countercurrent flow heat exchange, the content of humic acid in the product is increased, the problem of scaling of the heater is solved, the waste heat of the system is recycled to the maximum extent, and the method is suitable for resourceful treatment of the biogas slurry.

The application discloses a kind of folding screen automation processing OCA membrane laminating device, it is related to flexible screen processing field, including equipment rack, equipment rack is respectively equipped with material box feeding device, laminating device, visual alignment mechanism, film tearing mechanism, Plasma cleaning mechanism, material box feeding device is separately arranged in equipment rack front and back two sides, six-axis manipulator is equipped below laminating device, laminating device is driven transversely by X direction linear motor, visual alignment mechanism is respectively arranged below laminating device and above PET film attachment platform, visual alignment mechanism is divided into OCA visual alignment component and PET visual alignment component, film tearing mechanism includes OCA film tearing component and PET film tearing component, OCA film tearing component is installed on six-axis manipulator, PET film tearing component is installed on equipment rack and located above PET film attachment platform, the present application can overcome the industry pain points such as ultra-thin OCA film production, bubble, indentation, improve folding screen OCA membrane laminating production yield and product consistency.

The application provides a disinfection and cleaning device, which comprises a containing box, a containing cavity arranged in the containing box, a cleaning pipe arranged in the containing cavity, an inflation channel arranged in the cleaning pipe and communicated with the containing cavity, a generating device for generating disinfection gas for disinfecting fluid in the containing box, the generating device being connected with the cleaning pipe to introduce the disinfection gas into the cleaning pipe, a cleaning component abutting against the inner wall of the containing cavity and movably arranged, and a pushing component located in the cleaning pipe and connected with the cleaning component, wherein when the generating device introduces the disinfection gas into the cleaning pipe, the disinfection gas acts on the pushing component, so that the pushing component drives the cleaning component to move. The disinfection and cleaning device solves the technical problem of too much water consumption when a water heater is disinfected and cleaned.

The utility model discloses a box-type lithium battery pack structure, and aims to provide a box-type lithium battery pack structure which is favorable for improving the qualified rate of products and comprises a battery shell, the lithium battery pack is mounted in the battery shell; the electrode terminal is detachably connected with the battery shell, a locking piece is detachably connected to the electrode terminal, one end of the electrode terminal is located in the battery shell, the other end of the electrode terminal is located outside the battery shell, a cable is arranged on the lithium battery pack, and the lithium battery pack is inserted into the end, located in the battery shell, of the electrode terminal through the cable. After being fixed by the locking piece, the electrode is electrically connected with the electrode terminal; and the communication acquisition terminal is detachably connected with the battery shell and is electrically connected with the lithium battery pack. The battery fixing device has the beneficial effects that tin soldering is replaced by a locking and fixing mode of the locking piece, so that various bad problems caused by the tin soldering are avoided, the quality of the battery is favorably improved, and the purpose of favorably improving the product percent of pass is achieved.

The invention discloses a system for driving a screw compressor inlet separator to drain liquid by utilizing exhaust pressure. The system comprises a separator, a two-position three-way valve, a liquid level sensor and a liquid level controller, the separator comprises a separator main body, an inner cavity of the separator main body is divided into an upper separation cavity and a lower liquid storage cavity by a transversely arranged separation blocking plate, and a wire mesh demister is further transversely mounted in the separation cavity; the separation cavity is communicated with the liquid storage cavity through a pipeline provided with a one-way valve; the separation cavity is communicated with the liquid storage cavity through a first port and a second port of a two-position three-way valve; the third end of the two-position three-way valve is connected with a high-pressure gas outlet of the screw machine, and the liquid level sensor is installed in the liquid storage cavity. The invention further provides a corresponding liquid discharging method, supercharging equipment does not need to be additionally arranged, liquid is driven to be discharged through high-pressure exhaust of the screw compressor, and the problem that liquid discharging is slow or unsmooth due to low inlet pressure of the inlet separator of the screw compressor is effectively solved.

A display substrate, a repairing method and a manufacturing method thereof, and a display device. The display substrate comprises a plurality of pixels (02), a second power line (V2) and a repair line (RL) on one side of a substrate (01). The second power line (V2) is coupled with the repair line (RL), and the repair line (RL) is configured to couple the second power line (V2) with a first electrode of a light emitting element (022) in a defective pixel (02), so that the second power line (V2) transmits a second power signal to the first electrode of the light emitting element (022). The potential of the second power signal is greater than the potential of a first power signal provided by a first power line (V1) coupled with a second electrode of the light emitting element (022). The potential of the second power signal can be flexibly set, so that when a foreign matter causes the first electrode and the second electrode of the light emitting element (022) in the defective pixel (02) to be short-circuited and a dark spot appears, the foreign matter can be burned out, so that the first electrode and the second electrode of the light emitting element (022) are no longer short-circuited, thereby solving the problem of dark spot defects.

The utility model discloses a kind of cross grain cloth anti tailing slope devices, be equipped in the tension adjustment counter roller cloth-feeding side of cross grain cloth winding, including the fixed rod of parallel tension adjustment counter roller, fixed rod end is through the pear-shaped mounting plate, the upper end of smaller installation plate is connected with fixed rod, the lower end of larger is equipped with rotating shaft, rotating shaft is equipped with annular rolling element, toothed peg is evenly distributed on rolling element, rolling element outside is equipped with protective cover, protective cover is fixedly installed on installation plate and is opened with half-ring avoiding slot corresponding rolling element, protective cover below is equipped with cloth guide rod, and gap is reserved for cross grain cloth to pass between cloth guide rod and rolling element.The utility model is through being equipped with the device before cross grain cloth enters tension adjustment counter roller, and is cooperated by rolling element and cloth guide rod with toothed peg, utilize toothed peg to grasp and fix cross grain cloth edge adjustment cloth width, make cross grain on cross grain cloth keep horizontal and enter tension adjustment counter roller and be wound, realize that winding cloth edge does not produce tailing slope, effectively promote production yield and weaving quality.

The application discloses a kind of FPC automatic pressing equipment, including upper shield, lower rack and rack internal components, rack internal components include width adjustment track, stop component, lower die lifting assembly and upper die pressing assembly, width adjustment track is located in the center of equipment and is installed in equipment big plate, stop component is located at the entrance and exit of width adjustment track, lower die lifting assembly is located below equipment big plate, upper die pressing assembly is located just above width adjustment track of lower die lifting assembly, product is input to corresponding position by width adjustment track in the application, front and rear positioning is realized by stop mechanism, lower die lifting assembly starts lifting, then upper die pressing assembly is pressed to product, product is automatically flowed to next process after pressing, product is input to corresponding position by width adjustment track, realize full-automatic online pressing, avoid that position error caused by personnel operation placement product produces pressing defect, whole process is automatic operation, reduce artificial labor, reduce production cost, work efficiency is high.

This invention belongs to the field of electronic component technology and discloses an inductor structure and its preparation method. The inductor structure includes: a base with mounting holes; a permanent core rod installed in the mounting holes of the base; a coil winding wound around the permanent core rod, with at least a portion of the free end of the coil winding folded around the surface of the base, the free end serving as an electrical connection portion for electrical connection with an external circuit; and a package tightly encapsulating the permanent core rod, coil winding, and base, with the electrical connection portion located on the outside of the package. The preparation method of the inductor structure includes the following steps: assembling a temporary core rod and base, winding the coil winding, processing the electrical connection portion, folding and fixing the coil winding, replacing the core rod, and processing into a finished product in a molding die. The above-mentioned inductor structure preparation method is simple to operate and has simplified steps, which shortens the production cycle while improving the yield rate of inductor products, resulting in low product loss and low impedance.

The invention discloses a screw conveyer adopting a reinforced shaftless screw blade, and relates to a screw conveyer. The spiral conveyor is provided with a barrel, a spiral blade is arranged in the barrel, the front end of the barrel is connected with a driver, the front end of the barrel is further provided with a feeding port, the rear end of the barrel is provided with a discharging port, and the spiral conveyor is characterized in that the spiral blade in the barrel is a reinforced shaftless spiral blade, the input end of the reinforced shaftless spiral blade is connected with the driver, and the output end of the reinforced shaftless spiral blade is connected with the discharging port. The output end of the reinforced shaftless spiral blade is connected with a coupler on the cylinder body, the reinforced shaftless spiral blade is provided with a reinforcing rib on a spiral blade of the shaftless spiral blade, and the reinforcing rib is a through rib or a short rib or a combination of the through rib and the short rib. The spiral conveyor has the advantages that various types of materials can be conveyed, and the conveying capacity is high; the deformation of the spiral blade during working is small; materials can be automatically stir-fried in the working process; scales on the spiral blade and the barrel or the inner wall of the pipeline are less; the friction wear of the spiral blade is small, and the service life is long; the popularization value is realized.

This utility model relates to dishwashers, specifically providing a dishwasher designed to solve the problem that existing dishwashers cannot switch between tap water and purified water according to different stages of the washing process, making it difficult to balance cleaning performance and water costs. To this end, the dishwasher of this utility model includes a control valve assembly, a salt tank, and a water softener arranged sequentially. The control valve assembly is connected to a purified water source; the control valve assembly controls the purified water source to supply purified water to the salt tank, so as to regenerate the softening medium in the water softener. This utility model, through the control valve assembly, can control the supply of water from the raw water source after passing through the water softener, or switch to direct supply from the purified water source, thereby achieving the use of low-cost softened raw water to remove food residue during the washing stage, and the use of higher-quality purified water to improve cleanliness during the rinsing stage. This structure effectively improves the cleaning effect while reducing the overall water cost, balancing performance and economy.

This utility model discloses a motor base, a voice coil motor, and a camera device. The motor base has multiple outer side walls and a hollowed-out central area forming a reserved space. At least one outer side wall is provided with a fourth adhesive groove, which includes a third groove, a fourth groove, and at least one fifth groove arranged at different angles. The fourth groove connects to the third groove, and the fifth groove connects to the third groove. A drain groove is provided on the outer side wall, located below and connected to the fifth groove. Therefore, by providing the fourth adhesive groove, the motor base can prevent adhesive from overflowing into the reserved space, while increasing the surface area available for bonding, thus helping to avoid product defects.

This application relates to the field of medium and heavy plate manufacturing technology, and particularly to a saw blade steel and its preparation method. The method includes: first heating a steel billet with a predetermined chemical composition and controlling the initial temperature of the first heating of the steel billet; first rolling the first-heated steel billet and controlling the final rolling temperature of the first rolling to obtain a first intermediate billet; first cooling the first intermediate billet and then cutting it to obtain a first steel plate; second heating the first steel plate under a predetermined temperature; second rolling the second-heated first steel plate and controlling the final rolling temperature of the second rolling to obtain a second intermediate billet; and second cooling the second intermediate billet to bring it to a first target temperature for shearing to obtain saw blade steel. This application solves the technical problem that existing saw blade steels struggle to simultaneously achieve excellent mechanical properties and good surface quality.

The utility model discloses a flexible plate turning and pasting device for a direct display module. The flexible plate turning and pasting device comprises a base, a mechanical arm, an upstream conveying module used for conveying products and a downstream conveying module used for conveying carriers for assembling the products. The upper surface of the base is connected with the mechanical arm in a positioning mode, a carrier positioning platform is arranged on the peripheral side of the upper surface of the base, and the upstream conveying module and the downstream conveying module are arranged on the peripheral side of the base with the upper surface of the base as the center. Automatic assembling action can be achieved through the carrier grabbing module and the product grabbing module, specifically, the mechanical arm is driven to guide the second grabbing end to grab a product on the upstream conveying module, and after the product is overturned by a set angle, the product and a carrier located at a carrier limiting station are positioned; and then, the manipulator is driven to guide the first grabbing end to transfer the carrier positioned with the product to a downstream conveying module.

This utility model belongs to the field of air conditioning technology, specifically providing a heat exchanger and air conditioner with better overall performance. This utility model aims to solve the problem of poor overall performance in existing heat exchangers. To this end, the heat exchanger of this utility model includes refrigerant pipes and multiple fins. The diameter d of the refrigerant pipe is selected from any value between 5.8mm and 6.5mm, and the refrigerant pipe includes multiple pipe segments. The distance H between two adjacent pipe segments is selected from any value between 17.1mm and 22.5mm. Multiple fins are penetrated by the multiple pipe segments, and the width W of the fins is selected from any value between 18mm and 23mm. The distance L between two adjacent fins is selected from any value between 0.8mm and 1.5mm. This utility model effectively avoids increased air resistance while ensuring heat exchange, thus improving the overall performance of the heat exchanger.

The utility model provides a heat exchanger shunting device which solves the problems that a small-diameter radiating pipe is prone to scaling in the using process, the flow speed of fluid is affected, the heat exchange efficiency is reduced, frequent shutdown for cleaning and maintenance is needed, and equipment operation is affected. The double-flow-path reverse flow path is arranged to form two-time cross heat exchange with shell pass fluid, the heat exchange efficiency can be improved, the two flow channels are independent of each other, starting and stopping of the two flow channels can be freely adjusted according to the temperature requirement, energy is saved, meanwhile, single-side mechanical cleaning is allowed under the condition that operation is not stopped, and the heat exchange efficiency is improved. And the other side is maintained to operate, so that the downtime is reduced, the problem of scaling can be solved on the premise of not changing the pipe diameter and energy consumption, and meanwhile, the operation of equipment is not influenced.

The utility model relates to a kind of filling crystal structure for improving filling crystal bad, including filling crystal component and the liquid crystal box matched with filling crystal component;Filling crystal component includes filling crystal strip, first fiber layer, sponge strip, second fiber layer;Liquid crystal box includes substrate, glue frame set on substrate, glue frame surrounds a filling crystal area, glue frame side symmetry is provided with two flow guide walls, two flow guide walls between constitute filling crystal mouth, filling crystal area is close to the position of filling crystal mouth and is provided with shunt piece.The utility model is provided with first fiber layer and second fiber layer in the both sides of sponge strip, can filter small particle dirt impurities in liquid crystal, improve the quality of liquid crystal injected into box, avoid the problem caused by dirt, improve yield, reduce the cleaning and replacement frequency of sponge strip, improve filling crystal operation efficiency.Meanwhile, the flow guide wall of liquid crystal box can reduce the flow rate of liquid crystal under the cooperation of shunt piece, avoid liquid crystal directly impacting filling crystal area inside, further ensure the yield of product.

The utility model provides an adjustable cyclone separator for a coal-fired fluidized bed boiler, which comprises a barrel and an exhaust pipe, a motor is fixedly mounted on the barrel, an output shaft of the motor extends into the barrel and is fixedly provided with a rotating shaft, and two first connecting rods and two second connecting rods are fixedly mounted on the rotating shaft. By starting the motor, the first cleaning brush and the second cleaning brush, fly ash attached to the inner wall can be brushed off in time, ash deposition and scaling are prevented, the interior of the barrel can be kept in a good airflow state, the efficient separation performance of the cyclone separator is maintained, and it is ensured that the dust exhaust concentration of the coal-fired fluidized bed boiler meets the environment-friendly requirement; axial thrust and rotating force can be generated on ash in the discharging pipe, the discharging speed of the ash is increased, the ash is prevented from caking or blocking in the pipe, and it is guaranteed that the ash can be smoothly discharged into a collecting box from the discharging pipe.

The utility model relates to composite bag processing technical field especially is a kind of composite bag welding nozzle heat sealing device for food, including bearing plate, the top of bearing plate is separately provided with heat sealing assembly and auxiliary assembly, auxiliary assembly is located at the bottom of heat sealing assembly, by setting up installation top plate, driving motor, threaded rod, moving block, spring telescopic link and the cooperation use of heat sealing knife, the sealing of heat sealing device to composite bag different position is realized, the flexibility of device is improved, driving motor is installed in the end of installation top plate, driving threaded rod rotates, threaded rod is connected with moving block screw thread, so that moving block can move along its axial direction under the rotation of threaded rod, one end of spring telescopic link is connected in moving block, other end connects heat sealing knife, the setting of spring telescopic link makes heat sealing knife have certain buffer capacity in moving process, can adapt to composite bag of different thickness, guarantee heat sealing effect.

Embodiments of the present application provide a display panel, a preparation method thereof and a display device. The display panel has a display area, an opening area and a transition area; the display area surrounds the opening area, and the transition area is located between the opening area and the display area; the opening area is provided with an opening; the display panel comprises a substrate layer and, in sequence away from the substrate layer, a second inorganic layer, a light-emitting layer, a first inorganic layer and a first reinforcing layer; the light-emitting layer is in contact with the first inorganic layer and the second inorganic layer; the first reinforcing layer has a plurality of first isolation structures; and the plurality of first isolation structures are arranged at a position of the transition area close to the opening area. When the edge of the opening is subjected to a lateral impact force, the film layers with smaller binding force in the display panel will preferentially separate, thereby effectively avoiding the occurrence of GDS and GDSH defects caused by peeling at the light-emitting layer; the first isolation structures are broken to release stress, preventing cracks from extending to the display area, and reducing the occurrence of failure of the display panel due to impact on the edge of the opening.