303results about How to "Avoid folding" patented technology

The invention relates to the technical field of bar upsetting rough machining, in particular to a large height-diameter ratio titanium alloy upsetting blank manufacturing method. Comprising the following steps that S1, the upper end face and the lower end face of a bar are machined, so that the upper end face and the lower end face of the bar are perpendicular to the axis of the bar; s2, first heating number upsetting is carried out, and a first rod-shaped rough blank is obtained; s3, second heating number upsetting is carried out, and a second rod-shaped rough blank is obtained; s4, third heating number upsetting is conducted, and a third rod-shaped rough blank is obtained; s5, upsetting for the fourth heating number to obtain a cake-shaped rough blank; according to the method, the middle of the bar is deformed into the first bar-shaped rough blank through the first heating number of upsetting, the head of the first bar-shaped rough blank is deformed into the second bar-shaped rough blank through the second heating number of upsetting, and the tail of the second bar-shaped rough blank is deformed into the third bar-shaped rough blank through the third heating number of upsetting; and the third rod-shaped rough blank is upset into a cake-shaped rough blank through fourth heating number upsetting, different molds are designed for each heating number, and the situation that a bar with the large height-diameter ratio is folded, inclined and bent in an unstable mode in the upsetting process is avoided.

The utility model relates to the technical field of battery processing equipment, in particular to a die cutting mechanism and battery cell winding equipment. A die cutting mechanism comprises a material belt guiding assembly used for guiding a material belt so that the material belt can be conveyed downstream in a second direction different from a first direction after being conveyed by a preset distance in the first direction, and the position where the material belt turns to the second direction from the first direction is a material belt turning position; the die cutting assembly is used for carrying out die cutting on waste materials on the material belt at the upstream of the material belt steering position, so that a tab is formed on the material belt; the waste material absorbing assembly is opposite to the material belt so as to absorb waste materials and the tabs to the waste material absorbing assembly; the waste material receiving assembly is used for adsorbing waste materials on the waste material adsorption assembly into the waste material receiving assembly through the adsorption opening; and the shielding piece is used for reducing the adsorption force of the adsorption opening to the material belt. According to the die cutting mechanism provided by the invention, the tabs can be relatively flat, so that the quality of battery cells is relatively good.

The invention relates to the technical field of medical instruments, in particular to a cystoscope capable of accurately positioning double J tubes, which comprises a handle part and a cystoscope body part, a forceps channel is arranged in the cystoscope body part, the cystoscope body part comprises an operation section and a main cystoscope tube section, and an imaging system for shooting images is arranged at the end part of the operation section; a pipe clamping assembly is further arranged in the operation section and comprises a limiting plate and a pushing part, the limiting plate is connected with the pushing part, and the clamp channel is arranged above the limiting plate; a limiting clamping groove is further formed along the center axis of the limiting plate, baffles are further arranged on the two sides of a groove body of the limiting clamping groove, and the double-J pipe can pass through the baffles. In the pulling-out operation of the double-J tube, when the double-J tube passes through the baffle and then pulls the mirror body part to move backwards, in the process, the length of the double-J tube above the limiting plate is gradually shortened, the originally curled end part of the double-J tube can be gradually stretched, and the end part of the double-J tube can be exposed out of the surface of the limiting plate, so that the taking-out convenience of the double-J tube is improved.

The utility model relates to the technical field of clothing spraying, in particular to jeans spraying equipment, a plurality of hanging piece mechanisms are arranged on a frame at equal intervals, each hanging piece mechanism comprises two connecting pipes, a first sensor and an opening device, the two connecting pipes are sleeved with expansion sleeves, and the expansion sleeves are sleeved with second sensors. The opening device is arranged between the two connecting pipes, the spraying mechanism is movably connected to the moving mechanism, the spraying mechanism comprises a second sensor and a spraying gun which are oppositely and fixedly arranged, the hanging piece mechanisms are arranged on the frame, the spraying mechanism is arranged on the frame through the moving mechanism, installation is convenient, and the space is greatly saved; meanwhile, the arranged hanging piece mechanism is inflated through an expansion sleeve to tightly support the jeans, the crotch part is supported through a supporting device connected to two connecting pipes, the jeans are prevented from being wrinkled or folded, the spraying mechanism is movably connected to the moving mechanism, and the moving mechanism is movably connected to the frame, so that the effects of all-directional spraying and uniform coloring are achieved.

The invention relates to the field of water conservancy irrigation, in particular to a water conservancy irrigation device for a water conservancy project, and solves the problems of ensuring that a pipeline is in a water passing state during long-distance and short-distance irrigation and ensuring uniform irrigation at the same time, the water conservancy irrigation device comprises a support and an irrigation component, a side plate is fixedly mounted on the side wall of the top of the support, and a rotating shaft is rotationally connected into the side plate; the rotating shaft is fixedly connected with the wind-up roller, and a plurality of abutting rings are fixedly installed on the outer wall of the wind-up roller. According to the device, when irrigation needs to be carried out at different distances and lengths, the irrigation pipe can be stretched to enable a winding roller to unwind the pipe, meanwhile, under the arrangement effect of an abutting ring, the abutting ring of the device can abut against the wound irrigation pipe during short-distance irrigation, it is guaranteed that the irrigation pipe is in a hollow expansion state, and therefore the irrigation pipe is prevented from being damaged. The irrigation pipe is in a water passing state, and the phenomenon that when the winding roller is wound, water cannot pass through the irrigation pipe, and irrigation cannot be achieved is avoided.

The utility model discloses a safe-to-use folding chair which comprises a seat plate and supporting frames symmetrically arranged on the left side and the right side of the seat plate, each supporting frame comprises a front leg and a rear leg, each rear leg comprises a rear leg pipe and a telescopic pipe movably inserted into the rear leg pipe, the rear leg pipes and the front legs are hinged to the seat plate, and the telescopic pipes are hinged to the front legs. When the rear legs extend, the folding chair is in a folded state, when the rear legs retract, the folding chair is in an unfolded state, the supporting frame further comprises a locking piece which is movably arranged on the rear leg pipes, the front legs or the joints of the front legs and the telescopic pipes, the locking piece prevents the telescopic pipes from stretching out at the locking position, the locking piece is released, and the telescopic pipes extend freely; when the locking piece is arranged on the rear leg pipe, the locking piece is detachably connected with the telescopic pipe at the locking position of the locking piece, otherwise, the locking piece is detachably connected with the rear leg pipe at the locking position of the locking piece. When the folding chair is used, the locking piece can prevent the extension of the telescopic pipe at the locking position, so that the folding chair can be locked in an open state, the folding chair is prevented from being folded accidentally in the use process, and the use safety is improved.

The utility model discloses a placing frame for canned meat food processing, which comprises a frame, universal wheels are fixedly mounted at the bottom of the frame, a handrail is fixedly mounted on the outer wall of the frame, a reinforcing frame is fixedly mounted on the inner side of the frame, and a processing component is arranged on one side, far away from the handrail, of the frame. When the produced canned meat foods are different in size, the canned meat foods need to be separately placed, at the moment, the distance between the first partition plates is adjusted according to the size of the canned meat foods, at the moment, extrusion blocks are pressed, and sleeve blocks fixedly installed on the outer walls of the extrusion blocks slide on the outer walls of limiting rods; the sleeve block extrudes a second spring sleeving the outer wall of the limiting rod, at the moment, the inclined face of the outer wall of the extrusion block does not extrude the inclined face of the side, away from the clamping groove, of the clamping plate any more, and under the elastic action of the first spring, a supporting plate fixedly installed on the outer wall of the clamping plate is pushed towards the extrusion block, so that the clamping plate is not clamped with the clamping groove any more.

The utility model relates to the field of fire hose hangers, and discloses a fire hose hanger which comprises a storage roller, a supporting mechanism is arranged at the lower end of the storage roller and used for supporting an upper end structure, the supporting mechanism comprises a supporting frame, the upper end of the supporting frame is fixedly connected with a lantern ring, and the lantern ring is arranged on the supporting frame. The front side and the rear side of the lower end of the supporting mechanism are fixedly connected with anti-skid supporting legs, and the lower ends of the anti-skid supporting legs are fixedly connected with anti-skid rubber strips. An upper positioning rod and a lower positioning rod are fixedly connected to the inner side of one end of the supporting frame. According to the fire hose winding device, the fire hose is prevented from being twisted or folded when being laid or wound through the limiting effect of the upper positioning rod and the lower positioning rod, meanwhile, the fire hose is pressed and clamped through the pressing idler wheel, so that the fire hose is more compact when being wound, and the occupied space is reduced; the fire hose is wound in a hand-cranking mode, the storage efficiency of the fire hose is improved, and the fire hose winding device is practical and suitable for being widely popularized and used.

The utility model discloses a capping machine for lubricating oil canning, and relates to the technical field of lubricating oil production equipment. According to the capping machine for filling the lubricating oil, through cooperation of a lower pressing ring and a conical sealing cover, a negative pressure device can operate during pressing, so that a can cover is subjected to upward adsorption force, then the pressing operation is completed along with continuous downward movement of the lower pressing ring, and the pressing effect of the circumferential position of the can cover can be improved; meanwhile, the phenomenon that the port of the packaging tank is damaged due to overlarge stress can be avoided, meanwhile, through cooperation of the supporting frame and the supporting gasket, the situation that the tank cover is turned over upwards due to overlarge stress can be avoided, and the pressing effect is further guaranteed.

The utility model relates to the technical field of wheelchair accessories, in particular to a quick-release wheelchair connecting piece. In order to solve the problems that a foldable wheelchair is quite inconvenient to connect with an electric vehicle head, a plurality of fasteners need to be adopted to connect with a connecting rod, the connecting operation is tedious, and the disassembly is also troublesome, the following technical scheme is provided: the quick-disassembly wheelchair connecting piece is used for a foldable wheelchair, and the quick-disassembly wheelchair connecting piece can be used for the electric vehicle. The front connecting piece and the rear connecting piece B are used for connecting an electric vehicle head and a wheelchair; the front connecting piece is installed on an electric vehicle head, the rear connecting piece B is fixedly connected with steel pipes on the two sides of a wheelchair, the rear connecting piece B and the front connecting piece are arranged in a mutually perpendicular mode, and the middle portion of the front connecting piece is connected with the middle portion of the rear connecting piece B in a clamped mode. After the electric vehicle head is connected with the wheelchair, the electric vehicle head and the wheelchair are convenient to disassemble and assemble, the convenience of the wheelchair in use is improved, and meanwhile, the stability of the folding wheelchair in use is ensured.

The utility model discloses a kind of dialysis pipeline fixing devices, it is related to medical instrument technical field.Dialysis pipeline fixing device, including box body, box cover, limiting component, clamping component.The first recess is opened in box body;The side of box cover is hinged with the side of box body, and the second recess is equipped on box cover;The box cover flip cover is equipped on the box body, and first recess and second recess are connected with each other to form installation channel;Limiting component is arranged on box body, and limiting component is used to limit the relative position of box cover when being covered on box body with box body;Clamping component is installed on box body;Dialysis pipeline fixing device provided by the utility model is connected by using limiting component to make box body and box cover cooperate, finally fixed in patient's clothes or bed sheet by using clamping component, when providing support for dialysis pipeline, it is more stable and reliable, while avoiding to cause misclip or lead to pipeline occlusion to dialysis pipeline, ensure the reliability of patient's hemodialysis treatment.

The invention discloses perspiration refreshing fabric preparation equipment and process, and belongs to the technical field of cloth, the perspiration refreshing fabric preparation equipment comprises a base, a top plate is arranged at the top of the base, supporting columns are fixedly arranged at four corners between the base and the top, and conveying assemblies are fixedly arranged at the top of the base and the bottom of the top plate; and the conveying assembly comprises four supporting plates, four conveying rollers and a conveying belt, the four supporting plates are fixedly arranged at the four corners of one side of the outer wall of the base and the top plate, the upper end and the lower end between every two supporting plates are each rotationally provided with two conveying rollers through bearings, and the conveying belt is arranged among the multiple conveying rollers. By arranging the testing mechanism, the testing mechanism can also adjust the position of the testing assembly according to the thickness of the cloth and do reciprocating friction motion on the surfaces of different pieces of cloth, and the friction frequency can be set in advance according to different pieces of cloth, so that the wear resistance of the cloth is checked; the pilling degree of the cloth is further judged so as to observe the quality of the cloth.

The utility model relates to the field of fabricated buildings, and particularly provides a locking structure of a scooter folding mechanism. The plate trailer comprises a plate trailer body, a mounting seat is arranged at the top of the plate trailer body, and a locking mechanism is arranged at the front end of the top of the mounting seat. According to the foldable scooter, the scooter rod and the weight of a rider are stably supported, the folding and locking functions are ingeniously designed, the scooter rod serves as a main support of the scooter and needs to be firm enough to provide stable control, the first rotating shaft enables the scooter rod to be foldable, carrying in urban travel and public transportation is facilitated, an inner groove and a claw hook groove are tightly combined with the locking mechanism, and the scooter rod can be folded conveniently. Strength is transmitted through the connecting rod, it is ensured that the locking buckle tightly locks the bicycle rod, and additional safety is provided.

The utility model provides a foreign matter detection device on a konjaku flour assembly line, which comprises a first conveying mechanism, two parallel second conveying mechanisms which operate independently are arranged below the end part of the first conveying mechanism, and X-ray detection devices are arranged on the second conveying mechanisms; a partition plate is arranged between the two second conveying mechanisms, a rotating flow guide plate is arranged on the partition plate, and the flow guide plate rotates on the first conveying mechanism and is used for distributing materials on the first conveying mechanism; and a paving device is arranged between the partition plate and the second conveying mechanism, is arranged at the front end of the X-ray detection device and is used for flattening materials on the second conveying mechanism. The foreign matter detection problem caused by random stacking of materials is effectively solved, the detection efficiency and the product quality can be improved on the premise that normal production is not affected, and the safety and the stability of the production process are greatly improved.

The utility model provides a pumping and drainage system for draining and overhauling a compound trapezoid-section plunge pool of a hydropower station, which is characterized by comprising a drainage main pipe arranged along a first slope surface of the plunge pool, a pumping pipe joint is arranged on the drainage main pipe, and a pumping branch pipe is arranged on the pumping pipe joint. The water pumping branch pipe is connected with a buoy pump station on the water surface through a water pumping hose; the lower end of the main drainage pipe extends to the second riding track of the plunge pool, the upper end of the main drainage pipe is located on the first riding track of the plunge pool and connected with a main drainage pipe, one end of the main drainage pipe is connected with the main drainage pipe, and the other end of the main drainage pipe extends out of the plunge pool to achieve drainage. The integral draining of the plunge pool is realized in a mode of mechanically combining the drainage main pipe and the water pumping hose, and draining maintenance conditions are created. The drainage main pipe is only arranged on the second riding track, the second riding track does not need to be arranged in the section of the plunge pool bottom plate, the safety risk of large-radius hoisting operation is avoided, and related economic cost is saved.

The present application relates to the technical field of aquaculture, and especially relates to a high-density and high-benefit freshwater fish circulating water breeding method, which uses a high-density and high-benefit freshwater fish circulating water breeding pond, the breeding pond comprises a pond body, a water inlet pipe and a sewage suction pipe, etc.; a sewage ditch is formed on the pond body; the water inlet pipe is connected to the front side of the pond body; the sewage suction pipe is arranged on the back side of the pond body, and a plurality of branch pipes are arranged on the sewage suction pipe and located in the sewage ditch; the water inlet pipe and the sewage suction pipe are connected to an external filtering device, and a water pump is arranged on the filtering device. The present application realizes that the impurities at the bottom of the pond body are pushed backward to the sewage ditch by the scraper, and the straight plate part of the scraper blocks and limits the impurities in the process of backward movement of the scraper, so that the impurities are not lifted, the sewage passes through the water filtering port when the impurities are moved backward by the scraper, and thus the problem that the collection effect of the impurities is reduced due to the backward movement of the pond water caused by the scraper is avoided.

The utility model provides an automatic tray bottom film fixing device which comprises a conveying assembly, a film covering assembly, a fixing assembly, a tray and a film roll, the film covering assembly is arranged in the middle of the upper portion of the conveying assembly, the fixing assembly is arranged above the conveying assembly and located on one side of the film covering assembly, and the tray is arranged on the conveying assembly and located on the other side of the film covering assembly. The tray can penetrate through the space between the film covering assembly and the conveying assembly, and the film roll is arranged on the film covering assembly. According to the automatic film laminating and cutting device, automatic film laminating and cutting can be carried out on the tray, the hot air gun is used for drying and shrinking the PE film laid on the tray, the fixing effect is achieved, and the PE film is prevented from being folded or dislocated due to wind blowing or scratching in the disc stacking process.

The present invention provides a laminar flow bed with an automatic curtain disinfection structure, which relates to the technical field of medical devices, and aims to solve the problem that the existing laminar flow bed is disinfected by wiping at the bedside, which consumes manpower and material resources, and is not easy to wipe clean, resulting in incomplete disinfection. The laminar flow bed includes a support mechanism; a mounting mechanism is provided on the top of the support mechanism; a surrounding mechanism is arranged above the support mechanism; a control mechanism is arranged inside the mounting mechanism; and a clamping mechanism is arranged inside the mounting mechanism. Through the clamping member, it is convenient to fix the two ends of the curtain, so that when the curtain is disinfected, the curtain is prevented from folding, which affects the disinfection effect. The moving block is threadedly connected to the control rod, so that it is convenient to control the curtain movement speed through the control member. The disinfection lamp is arranged above the control mechanism and the clamping mechanism, so that it can be disinfected during the movement of the curtain, so that it is convenient to continuously disinfect the curtain, so as to achieve a better disinfection effect.

The present invention relates to an apparatus for manufacturing a unit cell, which cuts a lower separator and an upper separator between electrodes adjacent to each other in a process of manufacturing the unit cell provided in a state, in which the lower separator and the upper separator continuously move in a longitudinal direction, and the electrodes are stacked between the lower separator and the upper separator and on the upper separator, respectively, the apparatus comprising: a lower block disposed under the lower separator; and an upper block which is vertically aligned with the lower block above the upper separator and in which a lower end of a cutter is installed to be accessible to the inside and outside, wherein the upper block descends to press the separators to a surface of the lower block, wherein at least one or more of the upper block and the lower block is heated to a predetermined temperature so that pressed points of the separators are thermally fused, and the cutter protrudes from the upper block to perform cutting at points at which the separators are pressed.

The present invention discloses a printing device with a quickly detachable pressure roller in the technical field of printing machines, comprising a bracket assembly and a flipping mechanism; the bracket assembly comprises a bracket, a driving rod and a driving device, the driving rod and the driving device are both connected to the bracket, the driving rod is connected to the driving device, and drives the driving rod to rotate, gears are arranged at both ends of the driving rod, and the gears are driven to rotate by the driving rod; the bracket comprises a vertical pole and a pressure roller, the pressure roller is movably connected to the vertical pole, and mounting shafts are arranged at both ends of the pressure roller; the flipping mechanism is respectively connected to the driving rod and the pressure roller through gears and mounting shafts, and the flipping mechanism is flipped by the gears. In this printing device with a quickly detachable pressure roller, the pressure roller can be directly removed from the vertical pole through the flipping mechanism, and the pressure roller can be quickly disassembled and installed, thereby improving the replacement efficiency of the pressure roller, thereby indirectly achieving the purpose of improving production efficiency.

The present invention relates to an electrode assembly. A separator is prevented from folding in the electrode assembly, insertability when the electrode assembly is inserted into a tight battery case is remarkably improved, and the electrode assembly is prevented from bending when the electrode assembly is picked up and moved. The electrode assembly has excellent wetting characteristics while having the above advantages. An electrode assembly according to the present invention includes an electrode stack formed by alternately stacking an electrode and a separator, and an outer tape attached to an outer surface of the electrode stack. The outer tape is attached to the electrode stack to surround a side surface thereof, and a through-hole is formed in a first region of the outer tape which is present at a position corresponding to the side surface of the electrode stack.

The utility model relates to the technical field of vehicle interior accessories, and discloses a tail door folding table plate which comprises a mounting plate, a table top is arranged on the right side of the outer wall of the mounting plate, first square grooves are formed in the front end and the rear end of the lower middle portion of the right side of the outer wall of the mounting plate, and fixing plates are fixedly connected to the sides, away from each other, of the inner walls of the two first square grooves. A first rotating shaft is fixedly connected to the right end of the upper middle portion of the front side of the outer wall of the fixing plate, a first connecting block is rotatably connected to the outer wall of the first rotating shaft, a fixing block is rotatably connected to the lower middle portion of the front side of the outer wall of the first connecting block, and the fixing block is fixedly connected to the left ends of the front side and the rear side of the outer wall of the table. The table is pulled, the first connecting block and the second connecting block are rotationally connected with the fixing plate through the first rotating shaft and the second rotating shaft, so that the table is rotationally unfolded around the fixing block, the spring is stretched under the action of the third rotating shaft and the fourth rotating shaft, the weight of the table is supported by the connecting blocks, and the table is stable and prevented from being shaken or folded through elastic force generated by the spring.

The invention relates to a light-transmitting cement-based material preparation device and a method for using the same, and belongs to the technical field of light-transmitting cement-based material production equipment, comprising: a bracket; a placement frame, which is vertically arranged on one side of the bracket and suspended in the air, and the placement frame is connected to the bracket; a wire-laying component, which is arranged just above the placement frame and is used to fix optical fibers; a plurality of frame plates, which are horizontally stacked inside the placement frame; a fixing component, which is arranged inside the placement frame and is used to fix the frame plates; a cutting component, which is arranged below the placement frame and is used to cut the optical fibers in a horizontal direction; the invention ensures the standardization of frame construction through the gravity of the frame plates and the optical fibers themselves, and the electric heating riveting plate can not only cut the optical fibers but also form a connection anchor point between the optical fibers and the frame plates, so as to prevent the displacement of the optical fibers during the pouring process and improve the quality of preparing light-transmitting cement-based materials. The invention is simple to operate, easy to use, highly practical, and worthy of promotion.

The invention belongs to the technical field of gift bag production equipment, and particularly relates to a folding mechanism of a gift bag threading machine. The folding mechanism of the gift bag threading machine comprises a rack, a transmission assembly, a positioning assembly, a folding assembly and a pressing assembly, the transmission assembly is arranged on the rack and used for placing a main body part, and the folding part is located on the left side or the right side of the transmission assembly; the positioning assembly is used for being connected with the rack, the folding assembly is used for being connected with the rack, and the pressing assembly is used for being connected with the rack. The gift bag is provided with the main body part and the folding part, the main body part is pressed on the transmission assembly through the positioning assembly, and the main body part can be prevented from being folded or folded in the folding process of the folding part. The folding assembly is used for pushing the folding part to move to the position above the main body part, the downward pressing assembly is used for pushing the folding part to be close to the main body part downwards, gift bag folding automation can be achieved, and therefore the working efficiency is improved, and the burden of workers is relieved.

The utility model belongs to the technical field of mattresses, and particularly relates to a detachable mattress which comprises a protective sleeve, a positioning frame is arranged in the protective sleeve, a spring cushion is fixedly connected to the inner wall of the positioning frame, a connecting strip is fixedly connected to the side wall of the spring cushion, a connecting groove is formed in the connecting position of the positioning frame and the connecting strip, and the positioning frame is fixedly connected with the spring cushion through the connecting groove. A baffle attached to the outer wall of the positioning frame is fixedly connected to the edge of the inner wall of the positioning frame, a bottom plate attached to the outer wall of the baffle is arranged at the bottom end of the spring cushion, the spring cushion is placed in the positioning frame by arranging the connecting strip and the baffle, the connecting strip is embedded into the connecting groove, stable installation operation of the spring cushion is achieved, and then the spring cushion is fixed to the positioning frame. The bottom plate is placed at the bottom end of the spring cushion through the four sets of baffles, meanwhile, the jute cushion piece and the wool cushion piece are sequentially placed at the top end of the spring cushion through the four sets of baffles, and the situation that the cushion piece in the mattress is folded during disassembly and assembly, and consequently the mattress is uneven is avoided.

The invention discloses an on-ridge film mulching device for peanut ridging cultivation, and relates to the technical field of film mulching. According to the on-ridge film mulching device for peanut ridging cultivation, through the design of a composite mechanism, a roller shaft is connected with a rotating shaft block to be placed in a fixing frame, the roller shaft is fixed through the fixing frame, falling in the rotating film discharging process is prevented, film feeding is also facilitated, and the operation difficulty is reduced; the protection mechanism plays a role in covering the mulching film and prevents the situation that external impurities splash to damage the mulching film and affect the mulching effect, the backfilling mechanism is used for reclaiming the ground, the rolling mechanism is used for pressing the two sides of the mulching film, and therefore the mulching film can be effectively protected. And then the backfilling mechanism pushes the soil to accumulate towards the two sides of the mulching film, so that the mulching film is fixed and prevented from moving due to the influence of strong wind, and the mulching film quality is improved.

The utility model relates to the field of batteries, and discloses a roller suitable for pole piece open milling, which comprises a base, two groups of mutually symmetrical side protection plates are fixedly arranged at the top of the base, a conveyor belt is fixedly arranged between the inner walls of the two groups of side protection plates, a first rotating rod is rotatably connected between the inner walls of the two groups of side protection plates, and a first driven roller is sleeved on the first rotating rod. A first driven roller is rotationally connected between the inner walls of the two sets of side protection plates, a second driven roller is connected to the second rotating rod in a sleeving mode, the film pressing assembly and the transmission assembly are further included, the knurling roller and the reticulate pattern knurling block rotate relatively and extrude the pole piece, the reticulate pattern knurling block can increase the contact friction force between materials and the roller, and therefore the film pressing assembly and the transmission assembly can be used for conducting film pressing on the pole piece. By means of the technical scheme, the materials do not deviate greatly in the tabletting forming process, overall film forming is controllable, the knurling roller is used for knurling, guiding force can be enhanced, the materials are prevented from slipping and deviating, and irregular forming of the materials is prevented. And meanwhile, a baffle is additionally arranged, so that the second driven roller can be effectively prevented from adhering to materials, and material joints are prevented from being folded.

The present invention relates to a negative electrode, a method of preparing the negative electrode, a secondary battery including the negative electrode, and a method of manufacturing the secondary battery. More particularly, the present invention relates to a negative electrode including a metal foil and a negative electrode active material layer coated on the metal foil, wherein the upper and lower portions of the negative electrode are coated with a binder; a method of preparing the negative electrode; a secondary battery including the negative electrode; and a method of manufacturing the secondary battery. According to the present invention, the present invention has an effect of providing a negative electrode capable of preventing folding of a separator when manufacturing a stack cell due to excellent adhesion thereof to the separator without impairing battery performance, a method of preparing the negative electrode, a secondary battery capable of minimizing reduction in a manufacturing yield and occurrence of accidents due to low voltage defects, and a method of manufacturing the secondary battery.

The utility model discloses a pedal type columnar mud sampler with a foldable pedal, which belongs to the technical field of environmental monitoring and governance, and comprises a mud sampler body, and a lifting frame is arranged at the top of the mud sampler. The L-shaped connecting frame and the supporting frame are limited and fixed through screws, then the plug pin is pulled, the first pedal and the second pedal are unfolded so that a large pedal area can be formed, then the plug pin can be loosened, the plug pin is bounced into the plug pin groove through elastic connection formed by the plug pin and the spring, and the first pedal and the second pedal are limited. The bottom mud collecting pipe and the supporting frame are arranged on the bottom mud collecting pipe, the folding phenomenon in the using process of the bottom mud collecting pipe and the supporting frame is avoided, the purpose that the bottom mud collecting pipe is full of bottom mud by increasing the gravity in a foot stepping mode when an operator encounters hard bottom mud is achieved, the using effect is improved, and the phenomena that feet crack or the supporting frame is bent are avoided.

The invention relates to the technical field of fire hoses, in particular to a fire hose production line which comprises a first conveying belt and a second conveying belt which are arranged side by side, the first conveying belt and the second conveying belt move in opposite directions, the first conveying belt comprises a first transmission mechanism, a first discharging plate, a first mold discharging plate and a clamping device, and the first transmission mechanism comprises a chain, an accessory plate and a positioning plate. The positioning plate is installed on the chain through the accessory plate, and a positioning groove is formed in the top face of the positioning plate. The clamping device comprises a pulling plate, magnet blocks and first clamps, the multiple first clamps are arranged on the top face of the pulling plate, the two sides of the bottom face of the pulling plate are each provided with one magnet block, and the sizes of the two sides of the pulling plate correspond to the sizes of the positioning grooves in the positioning plate; the first discharging plate is arranged above the tail end of the first conveying belt, and the first mold discharging plate is arranged below the starting end of the first conveying belt. By using the fire hose production line, the tense working rhythm of workers is relieved, and the production efficiency is improved.