37 results about "Large applications" patented technology

The invention discloses a liquid-gas phase change flexible actuator based on solid-liquid phase change regulation and control. The actuator comprises a strip-shaped driving layer, a heat insulation layer and a variable stiffness layer which are tightly stacked in sequence, and every two adjacent layers of the driving layer, the heat insulation layer and the variable stiffness layer are fixedly connected; the driving layer is driven to deform by driving the heating wire, the rigidity-variable layer adjusts the rigidity of deformation at different positions of the driving layer through the rigidity adjusting and controlling heating wire, deformation and adjustment of any shape of the liquid-gas phase change flexible actuator are achieved through cooperation of the driving layer and the rigidity-variable layer, and therefore different working modes are achieved. According to the liquid-gas phase change flexible actuator based on solid-liquid phase change regulation and control, repeated and reversible regulation and control deformation of the actuator can be achieved, and the liquid-gas phase change flexible actuator has the advantages of being diversified in deformation form, high in response speed and low in energy consumption for keeping deformation and has a large application prospect.

This disclosure relates to a method, apparatus, storage medium, and electronic device for hot-updating applications. The method includes: starting a target application; creating a first object corresponding to an entry application class and initializing the attributes of the first object; loading a target class file, the target class file including the target application class, through a class loader; creating a second object corresponding to the target application class, and injecting the initialized attributes of the first object into the second object. The entry application class is a class registered with the operating system, while the target application class is a class not registered with the operating system. The entry application class is used to transfer calls to its own methods from the operating system to the target application class. This solution enables hot-updating of the target application class code without requiring modification of the target application class, making it applicable to large-scale applications.

This invention provides a technique for microservice scheduling and improving data read / write efficiency based on runtime state analysis. Microservice systems have become one of the fundamental technology platforms for building large-scale, complex applications. By encapsulating modular information processing units in a lightweight virtual machine manner, high fault tolerance is achieved. Various application functions are orchestrated through service mesh to realize stable large-scale, complex application systems. Microservices often need to access multiple data sources or data lake systems, and the location of data has a critical impact on data read / write efficiency. For example, in a distributed storage system, having the execution node of a microservice coincide with or be close to the data storage node will greatly improve data processing efficiency. Addressing the efficiency problem of microservices in data-intensive scenarios in large-scale applications, this invention proposes a technique based on analyzing the runtime state of data read / write operations to determine the optimal location for microservice scheduling and execution. By shortening the data path, data I / O efficiency is effectively improved, enhancing the performance of building large-scale, data-intensive application systems based on microservices.

The utility model discloses an opposite-feed waveguide antenna array unit and a waveguide antenna array. The opposite-feed waveguide antenna array unit comprises a 180-degree E-plane power divider, a first E-plane feeder line, a second E-plane feeder line, a first E-plane-H-plane waveguide converter, a second E-plane-H-plane waveguide converter, an H-plane waveguide and a radiation slot array. The differential feed and equal feed scheme has the advantages of wide working bandwidth, symmetrical directional diagrams, flexible change of physical aperture of the antenna and the like, the problem of more pain points can be solved, a feed network for feed is more compact by optimizing impedance matching, the scheme has a larger application scene, and in the aspect of implementation, the antenna can be widely applied to the field of wireless communication. The antenna can be realized by welding after two layers of injection molding parts are metalized, and can also be realized by metalizing the same layer of injection molding parts and one layer of thin copper sheet, so that the thickness of the antenna can be obviously reduced.

The invention belongs to the technical field of memory scheduling. The invention discloses a memory scheduling and application acceleration method for an end-side heavy load scene. According to the embodiment of the invention, in a cold start process oriented to GB-level large-scale applications, in a multi-task scene of a mobile terminal, a vehicle-mounted terminal and the like, by uniformly scheduling a selective file preloading module, a self-adaptive memory recovery module and a context-aware process termination module, on the premise that application program codes are not modified, the application program codes can be quickly and efficiently started, and the application program codes can be quickly and efficiently started. The method comprises the following steps: modeling a file access mode and page type characteristics related to cold start, dynamically adjusting a preload object, a recovery strategy and a process termination sequence based on a preload memory budget and real-time memory pressure, preferentially retaining a key preload page, and selecting a background application with a relatively high net releasable memory and a relatively low short-term restart probability to terminate; and collaborative optimization of the cold start time delay and the background survivability under the constraint of the limited memory and the I / O bandwidth is realized.

The utility model discloses an LED video processing circuit and device. The circuit comprises a video signal processing module and at least one video signal transceiver module. The video signal processing module comprises a video interface and a V-By-One interface; the video interface is connected with a video source, the plurality of video signal receiving and transmitting modules are sequentially connected in series and are respectively connected with an LED, and the V-By-One interface is connected with the first video signal receiving and transmitting module. According to the technical scheme provided by the embodiment of the utility model, the video signal processing module adopts the V-By-One interface to carry out video signal transmission, supports video information transmission with 4K super-definition resolution, is higher in transmission rate, supports synchronous transmission of image information and audio information, greatly reduces the number of I / O interfaces occupied during video signal transmission, and improves the transmission efficiency. The display effect of the LED during video projection is improved, and the on-load requirements of medium and large LED application scenes are met.

The utility model discloses a large-capacity anti-skidding ceramic fruit basket which comprises a ceramic fruit basket body, supporting plates are fixedly connected to the four side faces of the ceramic fruit basket body, the tops of the four supporting plates are fixedly connected through a lifting handle, the top of the ceramic fruit basket body is fixedly connected with a movable frame through a capacity increasing folding cover, and the movable frame is fixedly connected with the bottom of the ceramic fruit basket body. Sliding sleeves are fixedly connected to the four side faces of the movable frame, locking pieces are fixedly installed on the outer sides of the sliding sleeves, reinforcing supporting pieces are further fixedly installed on the four side faces of the ceramic fruit basket body, and the lifting handle comprises four vertical rods and four horizontal rods. The large-capacity antiskid ceramic fruit basket is reasonable in structural design and convenient to use, the containing capacity of the ceramic fruit basket can be adjusted according to the number of fruits to be contained, the operation process is simple, the placement stability of stacked fruits can be guaranteed, the stacked fruits are not prone to slipping off, and the large-capacity antiskid ceramic fruit basket has high practicability and a large application range.

The airflow power plant and the energy fund storage system provide a sustainable, low-maintenance and scalable solution for continuous and trouble-free energy generation. While the airflow power plant continuously ensures sustainable production of energy, the surplus energy generated is stored in innovative, low-maintenance and location-independent energy fund storage systems when demand is lower. These systems, which can be implemented in a space-saving manner in a vertical or inclined structure, ensure that the stored energy is immediately available when the demand for energy increases. The use of natural pressure differences and the use of gravitational forces make it possible to flexibly adapt the system to different locations and energy demands, as a result of which both small and large infrastructures can be developed. This solution maximises energy efficiency and provides a versatile, adaptable storage option for renewable energies. The functionality is based on the use of natural environmental conditions, such as air pressure differences between valley and peak positions, temperature differences as a result of the altitude, additional heat sources as required, storage by gravitational force and flexible air pressure and temperature control. With these elements, the system adapts flexibly to different locations and energy demands, as a result of which it is suitable both for small and for large-area applications. This maximises energy efficiency and provides a versatile, adaptable storage option for renewable energies.

The invention discloses an optical programming driven soft robot for multi-material integrated printing. The robot comprises a visible light response layer and a near-infrared light response layer which are horizontally arranged and are made of materials with different absorbance, the visible light response layer comprises four driving blocks, one ends of the four driving blocks extend outwards from the same center to form a centrosymmetric cross structure, the other ends of the four driving blocks are embedded inwards, and the near-infrared light response layer and the four driving blocks are mutually embedded. The near-infrared light response layer is of a cross-shaped structure, and the cross sections of the near-infrared light response layer and the visible light response layer are the same, so that the near-infrared light response layer and the visible light response layer are According to the driving method, deformation aerial grabbing and omni-directional movement in water are achieved by irradiating light of corresponding colors. According to the multi-material soft robot, integrated printing of the multi-material soft robot can be achieved, the two working modes of grabbing in the air and carrying on the water surface are achieved under programming control driving of multiple kinds of light, application expansion among different environments is achieved, and the multi-material soft robot has a large application prospect.

The utility model discloses concrete slump measuring equipment, which relates to the technical field of concrete quality inspection equipment and comprises a slump bottom plate, a slump cylinder, a horizontal support, a fixed pedal, an L-shaped mounting rod, a horizontal lever, a horizontal ruler and a vertical ruler. The middle of the upper end of the horizontal lever is rotationally arranged on the lower portion of the end of a transverse rod of the L-shaped mounting rod, vertical rulers are movably arranged on the two sides of the lower end of the horizontal ruler respectively, and fixing pedals used for fixing equipment are arranged on the two sides of the horizontal support respectively. According to the device, when the measuring scale is rotated for measurement, the horizontal ruler can be always kept horizontal, higher measurement precision is achieved, the height of a mixture can be measured while the horizontal ruler is rotated by lifting the L-shaped mounting rod, and the device has a large application range.

The application relates to the field of automobile suspensions, in particular to a multipurpose stabilizer bar connecting rod and a stabilizer bar assembly, which comprises a connecting shaft, one end of the connecting shaft is connected with an upper ball pin seat, the other end of the connecting shaft is connected with a lower ball pin seat, the connecting shaft comprises an upper shaft and a lower shaft, the lower shaft is provided with a plug-in groove near one end of the upper shaft, the upper shaft is plugged into the plug-in groove at the end of the lower shaft; the upper shaft and the lower shaft are connected through a fixing mechanism; the application discloses a multipurpose stabilizer bar connecting rod; the stabilizer bar connecting rod is designed as a two-section structure, the length of the connecting rod can be adjusted according to actual needs in actual use, and the stabilizer bar connecting rod disclosed by the application has a large application range.

The utility model belongs to the technical field of heat exchangers, and particularly relates to an elastic compensation structure for a fluoroplastic GGH heat exchanger. The elastic compensation structure comprises a fixed connecting rod unit used for connecting a shell and a header pipe, a limiting pore plate unit arranged on a heat exchange pipe end plate and connected with the fixed connecting rod unit in a sleeved mode, and an elastic connecting pipe unit with one end connected with the limiting pore plate unit and the other end connected with the header pipe. The heat exchange tube end plate at least has the beneficial effects that the elastic sealing connection effect of a foundation is achieved, the application range is relatively large, and particularly, the specific shape and size of the heat exchange tube end plate are not greatly limited.

A neck and shoulder integrated body position supporting and pressure reducing pad relates to the technical field of medical instruments and comprises a head supporting pad, a neck supporting pad, a first shoulder supporting pad and a second shoulder supporting pad, one end of the neck supporting pad is fixedly connected with the head supporting pad, one side of the neck supporting pad is provided with a clamping groove, one side of each shoulder supporting pad is provided with a clamping tenon, and the clamping tenon is fixedly connected with the neck supporting pad. The two shoulder supporting pads are movably connected with the neck supporting pad through matching of the clamping tenons and the clamping grooves, and the first shoulder supporting pad and the second shoulder supporting pad are both arranged in an L shape. The head, the neck and the shoulders are effectively supported in a three-in-one mode, shoulder muscles of a patient are prevented from being strained, and meanwhile operation treatment of a doctor is facilitated. Meanwhile, by means of the design of the movable shoulder supporting pad, the shoulder supporting pad can adapt to objects with different shoulder widths and has a larger application range.

The application discloses a kind of greening's pesticide application device, including medicine box, stirring mechanism is equipped in medicine box, the top of medicine box is fixed with horizontally arranged electric push rod and the movable end of electric push rod is fixed with water storage tank through support, and the whole of water storage tank is shaped like a Chinese character, and water storage tank includes A piece, B piece and connecting piece, and the opposite side of A piece and B piece is equipped with slide rail, and slide rail is movably connected with pull-out water box, and the bottom of pull-out water box and water storage tank is provided with spray head, and pull-out water box is communicated with water storage tank through thin hose, and water storage tank is communicated with medicine extraction mechanism arranged in medicine box through water delivery pipe, and the outer wall of medicine box is equipped with medicine inlet mechanism, and medicine box is also equipped with water inlet pipe and drain pipe.The greening's pesticide application device of the application can meet the need of top forward spraying and has large application range, and the stirring mechanism is reasonably designed, has good stirring and mixing effect, and has great application prospect.

This invention relates to a flux-modulated electric generator that utilizes a rotating Reluctance Modulation Cylinder (RMC) to dynamically modulate magnetic reluctance between a Magnetic Field Source (MFS) and a Power Extractor Assembly (PEA) by changing the reluctance of medium between PEA and MFS by sinusoidally. The RMC is constructed from chirped laminated ferromagnetic material on a non-magnetic conductive base and is driven by a small mechanical motor. As the RMC rotates, its varying thickness modulates the magnetic reluctance sinusoidally, creating a time-varying magnetic flux in the PEA. The PEA, composed of multiple electromagnets, captures this modulated flux and converts it into electrical energy through Faraday's Law of Induction. The MFS, which consists of permanent magnets or superconducting magnets, provides a stable and high-intensity magnetic field for flux modulation. The system is highly efficient due to the lightweight nature of the RMC, which significantly reduces mechanical power requirements compared to traditional generators with heavy rotating rotors. The generator also allows for individual load extraction through its series-connected electromagnets, making it adaptable to various power applications. This novel design offers enhanced efficiency, reduced mechanical wear, and versatility in power generation for both small and large-scale applications.

The present application relates to the technical field of artificial board production equipment, and specifically discloses a material paving device for automatic production of artificial board, which comprises a belt conveyor, a distribution box is arranged directly above the belt conveyor, a discharging device is arranged at the left and right ends of the lower surface of the distribution box, a material scraping device is arranged in the distribution box, a material paving roller assembly is arranged directly below the discharging device, the material paving roller assembly comprises front and rear side plates, two groups of rotating rollers are arranged between the two side plates, the roller gap between each group of rotating rollers gradually increases from the discharging device to the middle of the distribution box, the material paving roller assembly further comprises an adjusting mechanism for synchronously and actively adjusting the roller gaps of the two groups of rotating rollers; the material paving device disclosed in the present application greatly simplifies the overall equipment structure, reduces the volume and floor space of the entire material paving equipment, has a larger application range, can meet the material paving requirements of various artificial boards, and has excellent use effect.

The application discloses a method for controlling residual stress of rail bottom, which comprises pre-bending and straightening processes; the horizontal roller used in the straightening process comprises nine rollers, i.e., R1 to R9, wherein R2, R4, R6 and R8 are active pressure rollers; the straightening force F2 of the R2 roller is F2=α×(R m -400), wherein R m is the tensile strength of the rail, and α is a coefficient related to the rail weight per meter and the maximum bending height of the rail before straightening; the straightening force F4 of the R4 roller should not be greater than 1.2 times of F2, and the straightening force F6 of the R6 roller should not be greater than 0.8 times of F2; wherein, α=β×M 1 / 2 ; M is the weight per meter of the rail, and β is set according to the maximum bending height of the rail before straightening. The method can control the straightening force, control the residual stress of the rail bottom to be below 220 MPa on the basis of ensuring the straightness of the rail after straightening, does not increase the cost, is convenient to implement, has good practicability and a larger application range.

The utility model discloses a multidimensional laser welding wire feeding adjusting mechanism which comprises a connecting plate, an xy-axis displacement platform, a second mounting plate, a sliding column, a sliding plate, a gas shielded welding gun and a gun base, the second mounting plate and the connecting plate are connected through the xy-axis displacement platform, and the xy-axis displacement platform drives the second mounting plate to move horizontally relative to the connecting plate along the x axis and the y axis. The sliding column is fixedly connected with the second installation plate, the sliding plate is installed on the sliding column in a sliding mode and can be fixedly connected with the sliding column after sliding in place, the gun base is fixedly connected with the sliding plate, and the gas shielded welding gun is installed on the gun base. The laser welding wire feeding adjusting mechanism has the advantages that multi-dimensional large-stroke adjustment and large wire feeding angle adjustment can be carried out on a gas shielded welding gun, adjustment is accurate and convenient, and the requirement for the large application range of laser welding equipment is effectively met.

A flexible multifunctional cross-linking adhesive, a preparation method therefor and an application thereof. The adhesive uses guar gum and carboxyl styrene butadiene rubber as raw materials, and is formed by intermolecular cross-linking between hydroxyl groups rich in the guar gum and carboxyl groups contained in the carboxyl styrene butadiene rubber to form a flexible multifunctional cross-linked network. Compared to the prior art, the water-based adhesive is a flexible cross-linking adhesive that has a strong bonding force, high mechanical strength, and no cracking due to tensile deformation, and is insoluble in a battery electrolyte. The adhesive may effectively accommodate the volume effect of a sulfur positive electrode and keep the positive electrode structure intact during a cycling operation. At the same time, the adhesive has significant advantages such as environmental friendliness and being low cost. The compacted sulfur positive electrode has a simple preparation process and has relatively large application prospects.

The application provides a light-driven composite nanomotor based on oxygen-containing hole oxidized cuprous oxide and preparation and application of the light-driven composite nanomotor. 2+1 The rGO / CuO composite nanomotor is prepared by taking CuO material as a matrix and rGO as an outer wall material and by using an electrochemical deposition method as a preparation means. 2+1 The rGO / CuO composite nanomotor can realize high-efficiency movement in a low-concentration biocompatible fuel under visible light irradiation and can realize highly controllable targeted movement in a high-concentration cell isotonic environment under ultraviolet light irradiation. 2+1 The rGO / CuO composite nanomotor can load anticancer drugs in a short time. 2+1 The rGO / CuO composite nanomotor can effectively load drugs, can be applied to targeted drug delivery by using effective light driving, can be applied to environmental remediation, has a large application range, and meanwhile, the preparation method of the composite nanomotor is green, simple and easy to implement, and can realize batch preparation.

The utility model provides a universal electric drill gun, including drill gun body and rotation cover, is equipped with power axis on the drill gun body, is equipped with first steering body on power axis, is equipped with second steering body one side of first steering body, and one steering body and second steering body structure are same, is equipped with output shaft on second steering body, first steering body includes half tooth ball, and the half tooth ball of first steering body is engaged with the half tooth ball of second steering body. The overall structure can realize the angle adjustment of output shaft, and the output shaft after adjustment makes the drill bit align target position, avoids the phenomenon of drilling deviation, skidding, even damaging workpiece or electric drill gun itself due to the instability of unable to adjust stress. The overall device can be applied to non-vertical or non-horizontal inclined angle drilling requirements, has a larger application scene range, high operation efficiency, convenient operation and great popularization value.

The application provides a binary bitmask-based React component state penetration and broadcast method, system and application, and relates to the front-end application development technical field.The binary bitmask is introduced into the React state management, and the state identification and query with O(1) time complexity are realized through the bit operation.The cross-level state update is realized through the global state management and component ID mapping, and the performance loss of the props step-by-step transmission in the deep component tree is avoided.The subscription matching with O(1) time complexity is realized through the bitmask operation, and the subscription matching efficiency is improved.The state change filtering query based on the field level is realized in combination with the bitmask technology, and the log retrieval accurate to the field level is supported.Compared with the prior art, the application has significant advantages in the state penetration capability, subscription accuracy, time complexity and rendering performance, and is particularly outstanding in large React applications, real-time data applications and performance-sensitive applications.

The utility model is specifically related to a kind of multi-diameter fastener raw material rod poking device, including pedestal, the upper side of pedestal is provided with bar positioning assembly, the bar positioning assembly includes two parallelly arranged lateral adjusting seat, longitudinal positioning plate is set up on each lateral adjusting seat, lateral positioning plate is set up on the pedestal and located longitudinal positioning plate side, lateral adjusting groove and longitudinal adjusting groove are equipped on the lateral adjusting seat, poking mechanism is set up on the lower side of pedestal, and the poking mechanism includes hinged seat, cylinder, pivot, swing arm, poking claw is slidably connected on the pivot, and the poking claw includes sleeve, poking disc, baffle, third screw and fourth screw.The utility model has the beneficial effects as follows:the automatic feeding and poking of different diameter size and different length raw material rod can be adapted, not only larger application range, and feeding efficiency is higher.

The application discloses a 3D SiP packaging structure, which comprises a substrate, a component packaging assembly, a first chip, a second chip and a packaging shell; the component packaging assembly is arranged on the substrate and electrically connected with the substrate; the first chip is vertically stacked on the top of the component packaging assembly and electrically connected with the substrate through a lead; the second chip is flip-chip arranged above the first chip and electrically connected with the first chip; the packaging shell is arranged on the substrate, and the component packaging assembly, the first chip and the second chip are packaged in the packaging shell. The application relates to the technical field of semiconductor packaging and can solve the problems of large packaging structure size and large application limitation in space-limited equipment in the prior art.

The application relates to the field of air filtering devices, in particular to a rectifying type air distribution and uniform air device, which comprises a first rectifying bin, a rectangular groove body structure, a rectangular strip-shaped protective plate arranged around the first rectifying bin, a taper distribution plate clamped in the groove body, the taper distribution plate being a plate-shaped structure with a taper cross section, through holes arranged on the plate surfaces on both sides of the taper angle, and a strip-shaped support leg with a right-angled cross section fixedly welded at the four corners of the protective plate; a second rectifying plate, a plate-shaped structure, is installed at the lower part of the first rectifying bin and is fixedly contacted with the other end of the support leg, and through holes with uniform sizes are arranged on the plate surface, so that the problem that the air supply outlet and the air outlet on the same straight line cannot make the technical device play the effect of uniformly outputting air when the air supply pressure is too high in the above-mentioned technology is solved, the device has the effects of wide adaptation scene, large application range, simple structure, low comprehensive cost, uniformly dispersed air output and slowed air output speed.

The utility model provides an automatic wine outlet device, which belongs to the technical field of wine storage and comprises a mounting seat and a wine suction head. A clamping groove clamped with the wine jar is formed in the mounting seat, an adjusting block is arranged at the bottom of the mounting seat and is in threaded connection with the mounting seat, the joint of the adjusting block and the mounting seat is an inclined plane, and the adjusting block can be rotated to extrude the mounting seat so as to change the size of the clamping groove. A wine guiding pipe is further arranged in the adjusting block; the wine suction head is detachably arranged on the mounting seat, a wine outlet pipe is arranged on the wine suction head and communicated with the wine guide pipe, and a pressure pump is arranged between the wine outlet pipe and the wine guide pipe and fixed in the wine suction head. The device can realize automatic wine suction and discharge, so that the wine discharge efficiency is improved; and the size of the clamping groove can be changed, so that the device can be applied to the wine jars with different jar opening thicknesses, and has a relatively large application range.

Techniques for application boundary detection are described. A request to identify application boundaries within customer software executed in a cloud environment is received. Metadata associated with the customer software is obtained, the metadata including an identification of application units, features associated with each identified application unit, and connectivity between application units. The application units are clustered into initial application unit clusters based at least in part on the features associated with each application unit and the connectivity between application units. The initial application unit clusters are iteratively combined into at least some increasingly larger application unit clusters to generate final application unit clusters. A result including an identification of the application units in the final application unit clusters is output.

The invention provides a front-end resource dynamic loading and caching optimization method based on user behavior prediction. According to the dynamic resource loading and caching strategy, a resource loading and caching elimination mechanism based on user behavior prediction is achieved through four core modules, and the incidence relation between user behaviors and resource access is established by recording the route access history, the page dwell time and the element click behavior; a priority scoring model is provided for different resources, resource priority scores are dynamically calculated to decide whether to be preloaded or not, preloading trigger mechanism judgment is added, and intelligent cache management is achieved. Finally, the problems of performance bottleneck and resource redundancy of traditional static loading are solved, user experience, resource efficiency and system stability are balanced, and the method is particularly suitable for large-scale application and complex user scenes.

The invention provides a React component state penetrating and broadcasting method and system based on binary bit masks and application, and relates to the technical field of front-end application development. According to the method, binary bit masks are introduced into React state management, and state identification and query of O (1) time complexity are realized through bit operation. Cross-level state updating is realized through global state management and component ID mapping, and performance loss caused by props step-by-step transmission in a deep component tree is avoided. Subscription matching of O (1) time complexity is achieved through bit mask operation, and the subscription matching efficiency is improved. And in combination with a bit mask technology, state change filtering query based on a field level is realized, and log retrieval accurate to the field level is supported. Compared with the prior art, the method has remarkable advantages in the aspects of state penetration capability, subscription precision, time complexity and rendering performance, and particularly has outstanding performance in large React application, real-time data application and performance sensitive application.

The application provides a wafer conveying device of a photoetching machine, and relates to the technical field of semiconductor material production.The wafer conveying device comprises a docking seat, the docking seat is fixedly connected with a mechanical arm, a supporting frame is connected outside the docking seat, a hollow round seat is fixedly connected outside the supporting frame, six inner rotating blocks are installed around the inside of the hollow round seat, pull rods are connected outside the inner rotating blocks, and the pull rods are located inside the hollow round seat.Six negative pressure suction cups are connected outside the hollow round seat, the inner rotating blocks are connected with the negative pressure suction cups, and the negative pressure suction cups are connected with a negative pressure pump.The interval distance between the six negative pressure suction cups can be accurately changed according to the different specifications of wafer pieces, and the diversified requirements of various wafer pieces in the adsorption conveying process can be better met.The problem that the wafer conveying device configured by the existing photoetching machine has a large application limitation is solved, that is, the wafer conveying device is customized according to a single specification of wafer pieces in the design stage, the structure and size of the wafer conveying device are strictly adapted to the fixed conveying requirements of wafer pieces of a specific specification.