52results about How to "Good synchronization" patented technology

This application discloses a five-roll embossing machine, including a machine body, an embossing assembly, a paper feeding assembly, a main drive assembly, and a pressing roller. The embossing assembly includes five embossing rollers, a pair of main gears, and a pair of positioning assemblies. The pair of main gears are rotatably mounted on both sides of the machine body and driven to rotate by the auxiliary drive assembly. Each embossing roller is provided with a quick-release assembly at both ends. The quick-release assembly includes a bearing groove, a toothed cover, several pressure covers, and a fastening assembly. The fastening assembly achieves simultaneous locking of all pressure covers and toothed covers by a single bolt operation through a linkage. The main drive assembly drives the working position embossing roller and the pressing roller to rotate synchronously. The positioning assembly performs precise circumferential positioning of the main gears. This invention solves the problems of cumbersome roller changing, long time consumption, and low positioning accuracy of existing embossing machines, realizes quick roller changing by a single person and seamless switching of five patterns, and greatly improves production efficiency and equipment versatility.

This invention discloses a pre-positioned steel support system suitable for small, ultra-deep foundation pits, comprising several lattice columns, several connecting devices, pre-positioned steel supports, several steel strands, several through-hole jacks, several servo cylinders, and a hydraulic system. The pre-positioned steel supports include a steel waler and several corner horizontal braces set at the four corners of the steel waler. Several servo cylinders are spaced along the circumference of the steel waler on its outer surface. The servo cylinders extend and retract under the action of the hydraulic system to achieve active deformation control of the diaphragm wall. Several through-hole jacks, under the action of the hydraulic system, simultaneously raise and lower the pre-positioned steel supports by synchronously extending and retracting the corresponding steel strands. This invention enables a construction method of pre-positioning concrete or steel supports for simultaneous excavation, lowering, and support, effectively shortening the construction period and reducing the time without support during over-excavation. It has advantages such as high mechanization, strong construction safety, and high turnover rate.

The utility model provides a kind of vacuum chamber sealing door, including sealing cover and lifting mechanism, the front and back of sealing cover are equipped with the opening allowing material to go in and out;Two vertical sliding rails are equipped on the inner side wall of sealing cover, door frame is slidably installed on sliding rail, door body is slidably installed in door frame, limit block is equipped in sealing cover inside;Guiding hole is equipped in the side wall of door frame, guiding pin matched with guiding hole is equipped in the side wall of door body, sealing ring is equipped on the abutting surface of door body and sealing cover.The utility model determines the height position of door body by limit block, and utilizes the constraint of guiding hole, forcibly drives door body to move horizontally when door frame continues to drop, so that it is automatically pressed in the inner side of sealing cover opening, converts lifting movement directly into sealing pressing force, without additional pressing device, simplify overall structure and improve action reliability, significantly reduce the complexity of equipment, manufacturing cost and maintenance difficulty, while ensuring that sealing performance meets the stringent requirements of vacuum chamber.

The application discloses a kind of block storage performance automation test method, system, storage medium based on FIO, it is related to cloud computing and storage performance test technical field, it is applied to the cloud platform environment including management node and multiple test nodes.By running environment deployment script on management node, automatically complete test node IP management, SSH password-free configuration, firewall processing and according to X86 / ARM architecture adaptive deployment FIO;Run test execution script, precheck is carried out to test disk and time synchronization, start FIO service on multiple nodes according to preset task queue, in turn complete the stress test of covering 4K / 32K / 128K / 1M block size and random, order, 7:3 mixed read-write scene;Run result arrangement script, automatically parse FIO log, extract and uniformly output the IOPS, bandwidth and latency index of each scene.The method reduces manual operation while improving the consistency and result reliability of block storage performance test.

This utility model discloses a fire hose coupling to prevent detachment, relating to the field of fire hose coupling technology. It includes a lower coupling, an upper coupling connecting the lower coupling, and a locking assembly located between the lower and upper couplings. The locking assembly includes an inlet groove, an annular groove, and a locking groove on the upper coupling; a flip rod rotatably connected to the lower coupling via a spring hinge; and a locking rod fixed to the flip rod. When the lower and upper couplings rotate relative to each other, the locking rod moves within the inlet groove and annular groove, and is locked in the locking groove. The flip rod does not extend into the inlet groove. The advantages of this utility model are: the locking rod moves within the inlet groove, and when the lower and upper couplings rotate relative to each other, the locking rod moves synchronously around the annular groove until it is above the locking groove. Under the elastic action of the spring hinge, the locking rod is locked into the locking groove for stability, providing an anti-detachment effect. Furthermore, the lower and upper couplings are assembled synchronously, resulting in good synchronization and faster assembly efficiency.

The application discloses a shrinkage-compensating concrete containing acid-free weak base expandable graphite and a preparation method thereof. The concrete comprises cement 200-500 parts, mineral admixtures 50-200 parts, fine aggregate 600-800 parts, coarse aggregate 1000-1300 parts, water 120-200 parts, additive 5-15 parts and acid-free weak base low-temperature expandable graphite 15-75 parts. The expansion trigger temperature of the graphite is 90-100 DEG C, and the pH value is 6.0-8.0. The method comprises the following steps: firstly, uniformly mixing and stirring cement, mineral admixtures, fine aggregate, coarse aggregate and acid-free weak base low-temperature expandable graphite to obtain dry mixture B; secondly, mixing water and additive and adding the mixture into the dry mixture B to uniformly stir to obtain a concrete mixture; and thirdly, forming the concrete mixture, carrying out steam curing after final setting, naturally cooling to room temperature and obtaining the shrinkage-compensating concrete. Therefore, the concrete self-shrinkage can be precisely and efficiently compensated in the steam curing process of the concrete.

The utility model discloses a kind of wire high collection degree racks, belong to electrical engineering technical field, including the rack main body for placing wire, one end of rack main body is equipped with material receiving slope, rack main body and the bottom of material receiving slope are symmetrically equipped with supporting leg, converging platform is installed on rack main body, converging platform and material receiving slope butt joint connection, one side of rack main body is equipped with converging cylinder, the output end of converging cylinder is equipped with converging baffle, the other side of rack main body in supporting leg inner side is equipped with material blocking cylinder, the output end of material blocking cylinder is equipped with piston rod, the outer end of piston rod is swing and is equipped with material blocking baffle, the power of the present application is adopted cylinder to reduce overall weight, save motor selection, reduce design difficulty, realize one drive multiple linkage, realize low energy consumption, more stable function, connect multiple material blocking mechanisms, better synchronism when equipment runs, increase equipment stability.

This application provides a multi-layer tension cable net floating platform to solve the problems of heavy weight and difficult tensioning construction of existing floating platforms. It includes a central column and pressure rings and buoyancy rings spaced apart from top to bottom, coaxially arranged with the central column. The pressure rings and buoyancy rings are connected by several first support rods. The top of the central column extends beyond the upper surface of the pressure rings, and the bottom of the central column is located between the pressure rings and buoyancy rings. Several first and second cables are respectively arranged between the pressure rings and the top and bottom of the central column, and several third cables are arranged between the buoyancy rings and the bottom of the central column. The first support rods, first cables, second cables, and third cables are all arranged in a circular array along the axis of the central column. By using multiple cables, this application significantly reduces the weight of the floating platform while ensuring its strength, thus saving costs.

The application discloses a kind of digital tube driving systems based on time division multiplexing switch array, it is related to LED digital tube driving technical field.The application discloses a kind of digital tube driving systems based on time division multiplexing switch array, it is related to LED digital tube driving technical field.The application discloses a kind of digital tube driving systems based on time division multiplexing switch array, it is related to LED digital tube driving technical field.The application discloses a kind of digital tube driving systems based on time division multiplexing switch array, it is related to LED digital tube driving technical field.The application discloses a kind of digital tube driving systems based on time division multiplexing switch array, it is related to LED digital tube driving technical field.The application discloses a kind of digital tube driving systems based on time division multiplexing switch array, it is related to LED digital tube driving technical field.The application discloses a kind of digital tube driving systems based on time division multiplexing switch array, it is related to LED digital tube driving technical field.The application discloses a kind of digital tube driving systems based on time division multiplexing switch array, it is related to LED digital tube driving technical field.The application discloses a kind of digital tube driving systems based on time division multiplexing switch array, it is related to LED digital tube driving technical field.The application discloses a kind of digital tube driving systems based on time division multiplexing switch array, it is related to LED digital tube driving technical field.The application discloses a kind of digital tube driving systems based on

The invention discloses a brake device and mobile device.The brake device comprises a base plate, the base plate is provided with at least one pair of brake modules, and the pair of brake modules are driven by a driver to at least move back to back and are switched from a non-brake state to a brake state; each brake module comprises at least one brake roller protruding out of the opposite sides of the pair of brake modules, the brake rollers are eccentrically arranged on a wheel supporting shaft, and the wheel supporting shaft is arranged on the brake modules. According to the brake device, the brake idler wheel eccentrically arranged on the wheel supporting shaft is adopted for braking, during braking, the brake idler wheel tends to rotate around the wheel supporting shaft under the action of friction force, and due to the fact that the brake idler wheel is eccentrically arranged, the brake idler wheel has the effect of wedging towards a rail face for self-locking after rotating, and the brake idler wheel can be prevented from being damaged. Therefore, larger friction force can be obtained, the braking time and stroke can be shortened, and the braking effect can be improved.

The invention discloses a foam particle conveying device for foam production, and particularly relates to the technical field of foam particle pretreatment, the foam particle conveying device comprises a frame, a horizontal electromagnet, a screening separation piece, an inclined electromagnet and a driving module, and the horizontal electromagnet is mounted above the frame; the screening and separating piece is installed on the upper inclined face of the horizontal electromagnet, and an inclined electromagnet is installed on the screening and separating piece. The driving module is installed at one end of the horizontal electromagnet. The device has the advantages that metal impurities adsorbed on the electromagnets are synchronously and rapidly stripped, long-time shutdown caused by one-by-one maintenance is avoided, the maintenance time is remarkably shortened, and the pretreatment efficiency of foam particle conveying and recycling is improved, so that the problem that the metal impurities in all the fully-adsorbed positions are difficult to synchronously and rapidly reach the appointed stripping and removing positions, and the production efficiency is improved is solved. And the pretreatment efficiency of foam particle production and recovery is reduced.

The utility model discloses a steel plate turn-over device which comprises a base and two turn-over assemblies, each turn-over assembly comprises a turn-over frame and a plurality of idler wheels arranged on the turn-over frame in a self-rotating mode, a steel plate is in contact with the idler wheels when supported on the turn-over assemblies, one end of each turn-over frame is hinged to the base, and the turn-over frames can rotate around a rotating shaft relative to the base. When the two turn-over frames rotate, the included angle between the two turn-over frames changes within the flat angle range, so that the steel plate supported on one turn-over assembly is conveyed to the other turn-over assembly and turn-over is achieved. The steel plate turnover device can efficiently and conveniently turn over a steel plate, and the steel plate is basically not damaged by scraping and the like in the turnover process; the turning frame is good in rigidity and synchronism; the hinge shaft of the turn-over frame is short and is easy to process and install.

The invention relates to a synchronous control system and method for a girder transporting vehicle and a bridge erecting machine. The system comprises a first controller and a first switch assembly electrically connected with the first controller. The visual synchronous detection device is used for acquiring included angle data of a steel wire rope of a front crown block traction box girder body of the bridge girder erection machine relative to a plumb line; the first controller is used for updating the control signal according to the included angle data and controlling the on-off state of each first switch in the first switch assembly according to the updated control signal; the second switch assembly is electrically connected with the second controller; and the electrical connection assembly is used for electrically connecting the first switches in the first switch assembly with the corresponding second switches in the second switch assembly one by one and driving the corresponding first switches and second switches to be in the same on-off state. By adopting the system, the safety, precision and efficiency of cooperative motion control of the girder transporting vehicle and the bridge erecting machine can be improved.

The invention discloses a multi-layer automatic seedbed system which comprises a rack main body and is characterized in that a motor assembly seat is fixedly mounted on the lower side of the rack main body, a servo motor is fixedly mounted on the motor assembly seat, a driving gear is arranged at the driving end of the servo motor, and the driving gear is in meshed connection with a first transmission chain; the invention relates to the technical field of automatic seedbeds, and has the beneficial effects that a multi-layer metal frame forms a framework of a system, provides stable support and realizes intensive utilization of a vertical space, and a chain and chain wheel conveying system is a key for realizing automation. The system can drive the seedling raising plates to horizontally move or vertically ascend and descend among all the layers, the space efficiency is extremely high, the most prominent advantage is that through three-dimensional stacking, the production capacity of the unit occupied area is multiplied, and the system is very suitable for intensive production in environments such as greenhouses and plants with high space cost.

The present application relates to a kind of silk thread flow guide devices for production of spunbond nonwoven fabric, including mounting bracket and the web curtain conveyor belt being arranged below mounting bracket, a plurality of swing components are rotationally arranged in mounting bracket, drive assembly is arranged in the side of mounting bracket, swing component includes upper swing piece and lower swing piece, drive assembly drives upper swing piece and lower swing piece to reciprocating swing left and right, the angle between upper swing piece and lower swing piece always remains unchanged;The present application solves the problem that the angle between the swing piece and the fixed swing piece can be changed in the production process of prior art, but the airflow direction will not change, so it will lead to uncontrollable when laying, the position where the tow cannot reach swing piece is relatively sparse, and uneven situation is prone to occur when laying.

This invention relates to the field of feeding devices, specifically to an anti-agglomeration short-cut carbon fiber flocking feeding device, comprising a processing box for crushing and screening fibers. A feeding assembly is connected to the bottom of the processing box, and a storage hopper is connected to the bottom of the feeding assembly for collecting the processed fibers. A discharge assembly is connected to the bottom of the storage hopper. Two rotating rods are rotatably connected through the upper and middle sections of the processing box. Toothed rollers and gears are fixedly connected to the outer rings of the rotating rods. A motor is fixedly connected to the outside of the processing box, and its output end is fixedly connected to the rear rotating rods. A sprocket is fixedly connected to the outer rings of both the upper and lower rotating rods at the rear. By setting up a multi-layered rotating rod + toothed roller multi-stage tearing structure, combined with synchronous transmission of gears and chains, the agglomerated fibers are gradually torn apart and dispersed, resulting in a strong initial dispersing effect.

This application relates to the field of lithium battery manufacturing equipment technology, and in particular to a cell module extrusion and tape-making device, comprising: a base, two sets of end extrusion mechanisms, two sets of support mechanisms, and a middle extrusion mechanism; the two sets of end extrusion mechanisms are spaced apart on the base along a first direction; the support platforms of the two sets of support mechanisms are arranged on the base along the first direction and located between the two sets of end extrusion mechanisms. When the middle extrusion mechanism is located between the two support platforms, each support platform carries a first cell assembly, and the two sets of end extrusion mechanisms cooperate with the middle extrusion mechanism to extrude the first cell assembly; when the middle extrusion mechanism is away from the two support platforms, the two support platforms cooperate to carry a second cell assembly, and the two sets of end extrusion mechanisms cooperate to extrude the first cell assembly. By controlling the position of the middle extrusion mechanism, it can be applied to cell assemblies of various lengths without the need for additional replacement of support components, thereby improving the assembly efficiency of the cell assembly.

The utility model belongs to the technical field of electric tools, and particularly relates to a tong head device and a handheld tool. The handheld tool comprises a tong head device and a driving device, wherein the tong head device comprises a tong head mounting component; the first plier body and the second plier body are rotationally arranged on the plier head mounting component, and the front ends of the first plier body and the second plier body form a plier opening; the synchronous rotating mechanism is used for realizing synchronous rotation of the first clamp body and the second clamp body; wherein the synchronous rotating mechanism comprises a tooth-shaped sliding block, a first tooth part, a second tooth part, a third tooth part and a fourth tooth part, and the tooth-shaped sliding block is arranged on the tong head mounting component in a sliding manner; and the second tooth part is meshed with the tooth-shaped sliding block. The first plier body and the second plier body are meshed on the two sides of the tooth-shaped sliding block through the first tooth part and the second tooth part respectively, so that synchronous opening or closing of the first plier body and the second plier body is achieved, and the synchronous plier has the advantages of being good in synchronism, more symmetrical and stable in stress and the like.

The application discloses a sludge treatment method and a treatment system, and belongs to the technical field of environmental protection. The system comprises a sludge pool, a sludge metering hopper, a sludge mixing machine, a sludge hopper and a dewatering device. The dewatering device comprises a filter pressing structure and two cloth stacking machines. The filter pressing structure can move forward and backward to be directly below the filter pressing structure. The cloth stacking machine can reciprocate forward and backward to stack the filter cloth in the filter pressing structure. One cloth stacking machine is used for feeding or discharging, and the other cloth stacking machine is used for filter pressing. The cloth stacking machine comprises a reciprocating driving mechanism, a rack and a conveying mechanism on the rack, an upper filter cloth operating mechanism, a feeding mechanism, a lower filter cloth operating mechanism and a mud pressing roller. The lower filter cloth operating mechanism comprises a lower cloth winding assembly, a lower deviation rectifying detection assembly, a first lower flattening assembly, a lower material scraping assembly, a second lower flattening assembly and a traction assembly. The upper filter cloth operating mechanism comprises an upper cloth winding assembly, an upper deviation rectifying detection assembly, an upper flattening assembly, an upper material scraping assembly and a cloth pressing roller.

The application discloses a construction method of a small-sized super-deep foundation pit using a front-arranged steel support system, and adopts a front-arranged steel support system which comprises a plurality of lattice columns, a plurality of connecting devices, a front-arranged steel support, a plurality of steel strands, a plurality of through-type jacks, a plurality of jack foundations, a plurality of steel strand guide frames, a plurality of servo oil cylinders and a hydraulic system. The front-arranged steel support system can realize the construction method of front-arranging concrete support or steel support and lowering and supporting simultaneously with excavation, effectively shortens the construction period and the time of over-excavation without support, and can effectively transfer the self-weight of the front-arranged steel support and the self-weight of the upper cast-in-place concrete to the ground and keep the front-arranged steel support horizontal through the adjustable angle support arranged on the steel support, and can guarantee that the servo oil cylinder is not subjected to vertical torsional force when supporting the underground continuous wall in the horizontal direction, thereby improving the construction safety and the rationality of equipment stress.

The application discloses a kind of under the FDI network attack of reinforcement learning dual-motor safety coordination control method, comprising the following steps: (1) the double-time scale mathematical model of flexible coupling dual permanent magnet synchronous motor system is established;(2) the FDI network attack model of double-time scale mathematical model is established;(3) design safety coordination controller based on LQR theory;(4) according to the FDI network attack model of step (2) established, design model-free reinforcement learning, the safety coordination controller of step (3) is iteratively solved;The method avoids the influence caused by FDI network attack to system, using reinforcement learning algorithm can not depend on model data, avoid the influence of motor parameter change to system;For improving the coordination control performance of networked dual permanent magnet synchronous motor coordination control system and guarantee network security has important significance.

The utility model relates to the technical field of range extending type automobile, especially increase a kind of active air intake grille structure for range extender, including grille frame, the upper or front area of car rear wheel package is provided with grille mounting hole;Grille frame one end is embedded and fixed in the inboard of grille mounting hole, forms air inlet end, the other end is equipped with air outlet end, for connecting the air intake system of range extender;Drive assembly is located on grille frame, for driving flap to carry out overturning movement, to open or close air inlet end. By arranging air inlet end in the upper or front area of car rear wheel package, and setting flap controlled by drive assembly, active opening and closure to air inlet end are realized. When vehicle is in pure electric driving mode, range extender does not need to work, flap closes air inlet end under the action of drive assembly, effectively reduces vehicle front end airflow interference, reduces air resistance, improves pure electric cruising range;When range extender starts, flap is automatically opened, guarantees engine air intake demand.

The utility model discloses a packaging and bagging double-machine doubling structure, which relates to the technical field of packaging and comprises a processing table, a plurality of supporting legs are arranged at the bottom of the processing table, two bag making devices are fixedly mounted at the top of the processing table, a mounting frame is fixedly mounted at the top of the processing table, and the mounting frame is in an inverted U shape; and the double-line synchronous unwinding mechanism comprises a mounting seat, bearings, an unwinding shaft and a double-head motor, the mounting seat is fixedly mounted at the top of the machining table, a through mounting groove is formed in the mounting seat, and the two bearings are fixedly mounted in the mounting groove. According to the double-line working device, the bag making processing working efficiency is greatly improved, the production processing and operation cost of the device is effectively reduced, the overall occupied space of the double-line working device is effectively reduced, good cleaning treatment can be conducted on membrane materials, the finished product quality of products is effectively improved, and therefore the overall practicability is high.

The application provides a kind of packing machine frame mechanism, and the belt track is formed by inner ring movable belt track and outer ring fixed belt track, and the opening and closing movement driving mechanism of inner ring movable belt track includes first side and second side driving mechanism and synchronization mechanism, first side and second side driving mechanism are respectively located at the left side and right side of inner ring movable belt track, and the second side driving mechanism and first side driving mechanism can be synchronized based on synchronization mechanism, and the two sides of the inner ring movable belt track are movably connected with first side and second side driving mechanism respectively.The application can reduce the influence of belt track opening action on packing belt, and can reduce the weight that needs to be moved when opening the belt track, reduce the requirement for power, the opening and closing action is better in integrity and synchronization, more stable, and can improve the bundling quality.

The application discloses a safety seat, comprising a base, a seat, an adjusting assembly and a backrest, the base is provided with a connecting boss extending in the front-rear direction and provided with a plurality of clamping holes in the front-rear direction; the seat is provided with a connecting groove matched with the connecting boss, so that the seat is adjustably arranged on the base; the adjusting assembly is arranged on the seat, and the clamping piece of the adjusting assembly is selectively clamped into any clamping hole to fix the seat; the backrest is detachably connected to the seat through a backrest pipe, the connecting boss is provided with a limiting groove, the backrest pipe is provided with a blocking piece, and the seat is provided with a limiting piece selectively extending into the limiting groove; when the backrest is removed, the clamping piece is clamped in the last clamping hole, and the limiting groove is matched with the limiting piece to lock the seat; when the backrest is installed on the seat, at least part of the blocking piece is located between the limiting groove and the limiting piece to release the locking of the seat, so that the application range is improved, and the safety and reliability are improved.

The utility model discloses an integrated forming structure for automatically inserting a mold plastic external component, which comprises a machine table, a driving mechanism is mounted at the top of the machine table, a long arm is fixedly mounted on the driving mechanism, two linearly arranged grabbing mechanisms are mounted on the long arm, a bottom mold is fixed on the machine table, and the bottom mold is fixed on the machine table. Guide columns are fixedly connected to the bottom die, and a vertical hydraulic cylinder is fixedly installed between the top ends of the guide columns. The grabbing mechanism with the finished products on the left side moves to the conveying belt, the grabbing mechanism with the inserts synchronously moves to the bottom die, at the moment, the two grabbing mechanisms carry out discharging at the same time, the finished products are put into the conveying belt to be output, the inserts are put into a die groove of the bottom die, then the long arm is reset, and continuous operation is achieved by repeating the operation. Therefore, the device has the advantages of being integrated in design, better in synchronism, more accurate in material taking and placing, more compact in structure and convenient to maintain, and the operation efficiency of the device is improved.

The application discloses a cutting temperature control system and control method for machine tool heating cutting, and the control system comprises a temperature detection module, a temperature control module comprising a cooling control submodule and a heating control submodule, a temperature prediction module for predicting the temperature of a cutting area, a temperature control scheme generation module for generating a temperature control scheme in a machine tool heating cutting process according to the result of the temperature prediction module, and a central control module for controlling the temperature control module according to the temperature control scheme generated by the temperature prediction module in the machine tool heating cutting process, so that the temperature of the cutting area is controlled in a preset target control temperature range T b of the cutting area. The temperature control scheme of the application has better synchronism, can avoid the lag of the actual temperature relative to the target temperature in the feedback control scheme, and can guarantee a longer tool service life and better cutting effect.

This utility model discloses a chair back adjuster, including chair legs, a seat mounted on the upper part of the chair legs, and a chair back mounted on the rear end of the seat. Side plates are installed on both sides of the rear end of the seat, with the upper end of each side plate hinged to the chair back via a first pivot. Each side plate has an arc-shaped groove located on the lower periphery of the first pivot. A limiting shaft is inserted into the arc-shaped groove, with one end of the limiting shaft fixedly connected to the chair back. A gas spring connection control assembly is fixed to the front end of the seat, with the gas spring outer tube fixed to the rear end of the seat. The gas spring piston rod is fixed to the gas spring connection control assembly, and a gas spring valve core is provided at the top of the gas spring piston rod. This utility model uses a gas spring to drive the chair back rotation, which is convenient and labor-saving. The arc-shaped groove and limiting shaft distribute the load on the chair back, enhancing the overall load-bearing capacity. When rotating the chair back, the distance between the neck and the chair back changes little, making it easier to maintain a close fit at the support point.

The application provides a kind of based on binocular vision's electric arc additive deposition size in-situ acquisition system and method, comprising: electric arc additive manufacturing system, image acquisition and processing system, wherein the electric arc additive manufacturing system is configured with robot, intelligent welding machine, wire feeder, welding torch, welding protection gas bottle, the image acquisition and processing system is configured with binocular camera, computer;The binocular camera is installed on the welding torch, for collecting the deposited pass image in deposition process, and the deposited pass image collected is sent to computer for processing, obtains the overall size of current deposition piece.The application can directly monitor the deposition size in deposition process, obtain the size of deposition piece, with good synchronism, not by large workpiece size limitation advantage.And not by size restriction, can realize the size in-situ monitoring in the process of large piece electric arc additive manufacturing, measurement data is more accurate.

The utility model discloses an improved automatic bag opening machine which comprises a machine table, a bag containing mechanism is arranged at one end of the machine table, a bag opening mechanism is arranged at the other end of the machine table, a fixed suction cup is arranged below the bag opening mechanism, and a bag taking and conveying mechanism is arranged below the bag containing mechanism. The bag taking and conveying mechanism comprises an overturning mechanism, a material taking mechanism arranged on the overturning mechanism and a transverse moving mechanism arranged on the machine table, and the material taking mechanism is located under the bag containing mechanism. The improved automatic bag opening machine is compact in structure, due to the fact that the fixed suction cup on one side of the machine table is of a fixed structure, the occupied space is small, bag taking and bag opening are achieved through the bag taking and conveying mechanism on the other side, packaging bags can be conveyed to the fixed base plate through the transverse moving mechanism to be opened after materials are taken by the overturning mechanism, and the packaging bags are convenient to use. Compared with the prior art, the structure of a bag opening station is omitted, stability is higher, and synchronism and coordination are better.