521results about How to "Avoid tearing" patented technology

The utility model belongs to the technical field of metal product cutting, and particularly relates to a cutting positioning device for metal products, which comprises a positioning worktable and a laser cutting machine on the positioning worktable, and a first chuck and a second chuck which are respectively positioned on two sides of the laser cutting machine are arranged on the upper side of the positioning worktable in a sliding manner. A lifting adjusting baffle is arranged on one side of the positioning workbench, rotating rings are rotationally connected to the inner side of the first chuck and the inner side of the second chuck correspondingly, multiple sets of fixing and sliding assemblies for fixing and sliding pipe fittings are arranged on one sides of the rotating rings, and driving assemblies for driving the rotating rings to rotate are arranged on the upper side of the first chuck and the upper side of the second chuck correspondingly. By means of the pipe cutting device, a pipe can be always in a clamped and fixed state in the whole cutting process, the situation that the last part of a fracture of the cut pipe is torn due to the fact that the cut pipe is not provided with a clamped or supported part is avoided, and the cutting quality of the pipe is improved. And the fracture is not flat.

The invention relates to the technical field of power supply and distribution circuit devices, in particular to a power supply and distribution circuit device and a method thereof.The power supply and distribution circuit device comprises a transverse frame, a safety release mechanism and an adjusting mechanism, the bottom end of the transverse frame is fixedly connected with two sets of installation fixing rods, and a first supporting rod is arranged at the bottom end of the transverse frame; the two ends of the compensation body are fixedly connected with guide side plates, the two ends of the transverse frame are connected with side limiting plates through rotating shafts, pressure sensors are arranged at the top ends of the sides, close to the compensation body, of the side limiting plates, and power grooves are formed in the two ends of the transverse frame. The device can avoid chain collapse accidents caused by insufficient length of the electric wire during collapse accidents, and meanwhile, the device can protect the line to the greatest extent, so that the situation that the electric wire is damaged due to external force in the line repair process is avoided, the repair work of a user is reduced, the normal proceeding of the line repair work is ensured, and the production efficiency is improved. Line power supply time is shortened, and loss is further reduced.

Air conditioner compressor assembly cutting machining equipment belongs to the technical field of plate cutting and comprises a supporting frame, a feeding mechanism, a material bearing mechanism, a material supporting mechanism and a cutting mechanism. The feeding mechanism is used for intermittently delivering stainless steel plates to be cut, the cutting mechanism is used for pressing and cutting the delivered stainless steel plates, the material supporting mechanism is used for supporting the stainless steel plates in a cutting area, and the material bearing mechanism is used for limiting and stacking cut initial materials of round valve plates; according to the device, a whole stainless steel plate can be intermittently delivered and pushed, a plurality of circular valve plates are sequentially cut in a single row, and the upper end face and the lower end face of a cutting area are limited at the same time in the circular valve plate cutting process; and the situations that a plate in a cutting area jumps or is bent in the cutting process and a remaining area connected in the later period of cutting is torn are effectively avoided, and the cutting quality of the circular valve plate is guaranteed.

The utility model provides a pesticide spraying device for planting, which relates to the technical field of agricultural planting equipment, and comprises a pesticide box and a turntable rotationally connected to the pesticide box, a transmission assembly is arranged on the turntable, the transmission assembly comprises a motor, a fixed rod is fixedly connected to the motor, and a rotating wheel is fixedly connected to the fixed rod. A first rotating shaft is rotatably connected to the rotating wheel, a connecting rod is rotatably connected to the first rotating shaft, a second rotating shaft is rotatably connected to the side, away from the first rotating shaft, of the connecting rod, a sliding block is rotatably connected to the second rotating shaft, and a cross-shaped sliding rail is slidably connected to the sliding block. The first rotating shaft, the connecting rod and the second rotating shaft are driven to rotate, the sliding block is driven to slide longitudinally, the cross-shaped sliding rail is driven by the sliding block to slide on the sliding plate, transverse movement of the sliding piece on the cross-shaped sliding rail is achieved, and the problem that edible mushroom beds and sprayers of different heights or shapes cannot reach the most ideal spraying position possibly is solved.

The invention discloses a forming process and forming equipment of a disposable dinner plate. The forming process comprises the following steps: S01, material preparation: drying a sheet for 1-2 hours in a dehumidification environment at 125-130 DEG C; s02, preheating is conducted, specifically, the dried sheet is flatly laid and subjected to double-face preheating, and then the sheet is conveyed to heating equipment; s03, heating is conducted, specifically, the preheated sheet is heated and softened through double-face hot air and conveyed to a mold; and S04, shaping is conducted, specifically, the bearing mold is preheated in advance, and after preheating, the bearing mold and the gas conveying mold are closed to form a closed space. According to the plastic forming equipment, a sheet is preheated to reduce humidity, so that bubbles generated by water evaporation in the heating process are reduced, the situation that when fillets are attached and separated, tearing occurs due to the fact that the bubbles are weak is avoided, the sheet is softened through double-face hot air, the fillets are attached, and sinking is avoided.

The utility model discloses a folding luggage case which comprises a folding case body, a pull rod and universal wheels, the folding box body comprises two box frames, a folding sheet, a cover plate, a zipper assembly, two inner supporting plates and a buckle assembly, the bottoms of the two box frames are connected with the universal wheels respectively, the two box frames are connected together through the folding sheet, the folding sheet is connected with the box frames, a notch is formed in the side face of one box frame, the other box frame is provided with a hinge A connected with the supporting plates, and the box frames are further connected with a pull rod; the cover plate is provided with a hinge B connected with the notch. The zipper assembly is connected with the cover plate and the notch. The buckle assemblies are arranged on the two sides of the folding box body. The folding pieces are matched with the buckle assemblies to achieve folding and fixing of the folded structure, the thickness of the luggage case can be reduced through folding, and the luggage case is convenient to store; the folding sheets are folded for storage without disassembly, so that the operation is simple, and dust falling and dust collection in the luggage case are avoided; the matching of the inner supporting plate and the box frame can enhance the supporting effect of the folding sheet, so that the whole structure is stable and reliable.

The utility model provides a durable automobile control arm assembly, belongs to the field of automobile suspension, and solves the problem that the service life of a rubber bushing on a control arm is shortened after the rubber bushing works in an extreme environment. The fixing device comprises a fixing frame, a first connecting hole and a second connecting hole are formed in the fixing frame, a first rubber sleeve and a second rubber sleeve are installed on the first connecting hole and the second connecting hole, the first rubber sleeve and the second rubber sleeve are in interference fit with the first connecting hole and the second connecting hole, and the first rubber sleeve is composed of a first outer lining, a first rubber body and a first inner lining. The second rubber sleeve is composed of a second outer lining, a second rubber body and a second inner lining, a first flange and a second flange are arranged on the first connecting hole and the second connecting hole, a first movable groove and a second movable groove are formed in the first rubber body, and a third movable groove is formed in the second rubber body. The utility model has the advantages that the rubber sleeve is in interference fit with the fixing frame, so that the connection is firm, and the disassembly and assembly are convenient; the movable groove facilitates movement of the colloid, and the service life is prolonged.

The invention discloses a power assembly suspension support and an installation method thereof, and the power assembly suspension support comprises an installation support which comprises a bushing seat; the shock absorption bushing assembly comprises an inner bushing, a shock absorption block and an outer bushing which are sequentially arranged from inside to outside, and the shock absorption bushing assembly is mounted in the bushing seat; the first limiting mechanism is connected with the neck bush and used for limiting the displacement of the neck bush in the axial direction of the damping bush assembly; and the second limiting mechanism is connected with the outer bushing, is arranged on the bushing seat and is used for limiting the displacement of the outer bushing in the axial direction of the damping bushing assembly.

The utility model provides a rubberizing device for ultrasonic process, including two sets of glue absorbing component, elastic buffer component and gummed paper, the top of two sets of glue absorbing component both adsorbs the gummed paper, the bottom is respectively connected with the elastic buffer component, both sides of the gummed paper are provided with sticky part, the middle is non-sticky part, and the two sets of glue absorbing component are respectively connected with the elastic buffer component. The non-viscous part faces the tab, and the viscous parts on the two sides face the welding printing part and the roll core respectively. The adhesive paper adopts an interval gluing structure, negative pressure adsorption of the adhesive paper is realized through the adhesive suction assembly, the contact part of the middle part and the tab is non-viscous, and the viscous parts on the two sides respectively face a welding printing part and a roll core, so that the tab is effectively prevented from being torn; the elastic buffering assembly is connected with the glue absorbing assembly and used for conducting soft gluing on the adhesive paper according to the surface contour of the roll core, the roll core is prevented from being damaged, and the gluing state consistency is better.

The invention discloses a synchronous display method of AR split glasses and the AR split glasses. The AR split glasses comprise glasses, a control box and a data line. The data line is used for connecting the glasses and the control box. The method is applied to the control box. The method comprises the following steps: detecting that the glasses are connected with the control box through a data line under the condition that the glasses are disconnected from the control box; receiving a plurality of synchronization signals periodically sent by the glasses; calculating a first time difference between a first time when the glasses send the first synchronization signal and a second time when the control box receives the first synchronization signal; the synchronization signal is any one of a plurality of synchronization signals; the first time difference is a time difference corresponding to the first synchronization signal; optimizing the first time difference by using a setting algorithm, and adjusting the first time by using the optimized first time difference to obtain target time; and sending the image frame corresponding to the target time to the glasses, so that the glasses display the image frame. The picture tearing problem is avoided, and picture synchronous display is achieved.

The invention discloses a double-vacuum-layer horizontal liquid helium storage tank which is characterized by comprising an inner container, a supporting wall, an outer tank, a first flange structure and a second flange structure. The outer tank, the supporting wall and the inner container are sequentially arranged from outside to inside, a first vacuum layer is formed between the inner container and the supporting wall, and a second vacuum layer is formed between the supporting wall and the outer tank; the first flange structure is fixedly connected with the inner container and the supporting wall. The second flange structure is fixedly connected with the supporting wall and the outer tank; a heat insulation reflecting layer and a reinforcing layer are sequentially arranged on the outer wall of the inner container from inside to outside; according to the storage tank, on the premise that the storage amount of the liquid helium storage tank is guaranteed, heat radiation conducted from the interior is isolated and reflected, cold leakage caused by heat radiation and convection is effectively reduced, structural reinforcement is conducted on the inner container which is prone to failure, the safety of equipment during operation is improved, and the working efficiency of the equipment is improved.

The utility model relates to the technical field of distribution frame, concretely relates to a pork hanging distribution frame, including the frame, the frame bottom upper surface fixedly arranged with the support rod of uniform distribution, the support rod outer surface rotationally sleeved with the clamping plate no.

The invention relates to a preparation method of a composite fiber non-woven fabric, which comprises the following steps: step 1, firstly grinding viscose fibers, cellulose acetate fibers, polyester fibers, polypropylene fibers, polyamide fibers, metal fibers, carbon fibers, high-crimp fibers and antistatic fibers into powder; stirring the powder, epoxy resin, butadiene styrene rubber and a small amount of water in a stirrer for 10-15 minutes to obtain a fiber solution; 2, metal fibers, carbon fibers, high-crimp fibers and anti-static fibers are interspersed and mixed into conventional raw materials, according to the characteristic that the saturation force of the fibers is low, the surfaces of the non-woven fabrics are evenly coated with the hot melt adhesive through a coating machine or a spraying machine, then the two non-woven fabrics are pressed together through a hot press, and the non-woven fabrics are manufactured. The hot melt coating generally can provide higher bonding strength and consistency, the composite fiber non-woven fabric is prevented from being easily broken or torn, and the two non-woven fabrics are pressed together by a hot press to avoid the conditions of unevenness, uneven surfaces and the like.

The utility model relates to the technical field of encoders, and discloses an encoder wire connecting structure which comprises an interface body, an interface female head is fixedly connected to the outer wall of one side of the interface body, an interface sub head is slidably connected to the inner wall of the side face of the interface female head, and an installation mechanism is arranged on the interface sub head. An auxiliary mechanism is arranged on the interface sub-head, the mounting mechanism comprises a positioning opening, the positioning opening is formed in the outer wall of the side, close to the interface female head, of the interface sub-head, a positioning ring is fixedly connected to the outer wall of the side, close to the positioning opening, of the interface female head, and a groove is formed in the outer wall of the top of the interface sub-head; arc-shaped plates are slidably connected to the inner walls of the two sides of the groove, and sliding plates are fixedly connected to the outer walls of the bottoms of the arc-shaped plates. According to the utility model, the positioning ring, the positioning port, the arc-shaped plate and other structures are arranged, so that the plugging ports are rectified and corrected, and the phenomenon that the service life is influenced due to the abrasion of the plugging port core caused by the deviation during plugging is prevented.

The one-piece type wind-resistant umbrella structure comprises an umbrella cover, umbrella ribs, a middle rod, an umbrella handle, an upper nest, a middle nest, a lower nest and an umbrella plug, the middle rod is fixedly installed on the umbrella handle, the middle rod is sequentially and movably provided with the lower nest and the middle nest from bottom to top, the lower nest and the middle nest are connected through a spring, and the umbrella plug is connected with the middle nest through a spring. The upper nest is fixedly installed above the middle nest, the upper nest is fixedly installed at the top end of the middle rod, the umbrella plug is fixedly installed above the upper nest, the umbrella ribs are hinged to the upper nest, the middle nest and the lower nest, the outer connecting faces of the umbrella ribs cover the umbrella cover, and the umbrella ribs are fixedly installed on the umbrella cover. The umbrella cover is fixed between the upper nest and the umbrella plug, and the umbrella cover is a one-piece seamless umbrella cover. According to the one-piece type wind-resistant umbrella structure, the piece combining positions are integrally and seamlessly connected, the umbrella tail and the umbrella cover are watertight in an ultrasonic composite mode, and the umbrella ribs are matched for supporting, so that the wind-resistant and rain-resistant capacity is enhanced.

This application discloses an automatic sauerkraut filling machine in the field of food packaging technology, including a base, a support column, a top seat, and multiple filling components. The support column is connected between the base and the top seat. The base has a notch, and a packaging machine is connected to the notch. The packaging opening of the packaging machine is located at the notch, and a packaging bag is connected to the packaging opening. A motor is located at the bottom inner part of the base, and the output shaft of the motor is connected to the support column. A turntable is connected to the top of the base and is connected to the support column. Multiple filling components are all located on the turntable. Multiple drive components are connected to the support column to drive the filling components from the turntable through the support column to the bottom of the top seat. Each filling component includes a slider, a connecting column, and an electric telescopic rod. The slider is connected to the turntable and is connected to the drive components. A locking component for fixing sauerkraut is connected to the slider. The connecting column is connected to the top of the slider, and the electric telescopic rod is connected to the top of the connecting column.

The invention discloses a multi-channel video processing system and method based on ZYNQ, and the system is characterized in that an image collection module is connected with a camera, a video synchronization module achieves the synchronization of multi-channel videos, and transmits an image to a format conversion module for format conversion after the synchronization is completed; the image data after format conversion is transmitted to the VDMA module and is transmitted to the PS unit, the PS unit stores multiple frames of image videos, the image fusion module reads the images in the cache and realizes image fusion, the spliced data integration module performs data integration, then the spliced video data is subjected to size adjustment and format conversion, and finally the spliced video data is transmitted to the HDMI display module. And displaying the video. According to the scheme, image processing and caching are carried out in the PS unit and the PL unit respectively, the cameras are initialized at the PL end, line-field synchronization, data effective signals and pixel data are subjected to framing and then are synchronized through FIFO buffering, and the problem that video data collected by multiple cameras together are not synchronized can be effectively solved.

This utility model relates to the field of fabric conveying technology and discloses an adjustable-stroke fabric conveying device, including a first fixed frame, a second fixed frame, and multiple guide rollers. A stroke adjustment component is provided between the second fixed frame and the multiple guide rollers. A scale line is provided on the upper part of the inner wall of the rear end of the second fixed frame. The stroke adjustment component includes a linkage box, multiple forward threaded rods, and multiple reverse threaded rods. The linkage box is fixedly connected to the upper end of the second fixed frame. Multiple adjustment grooves are opened on the inner walls of both the front and rear ends of the second fixed frame. Adjustment sliders are threadedly sleeved on the outer walls of the multiple forward threaded rods and the multiple reverse threaded rods. In this utility model, the stroke adjustment component can flexibly change the fabric wrapping length to adjust the stroke, ensuring that fabrics of different thicknesses and elasticities maintain appropriate tension during conveying, and can simultaneously control the movement of multiple guide rollers, significantly saving adjustment time.

The invention belongs to the technical field of clothes treatment equipment, and discloses a control method and a detection device of clothes treatment equipment and the clothes treatment equipment. The control method of the clothes processing equipment comprises the steps that after the clothes processing equipment is started, a detection signal is obtained, the detection signal is used for indicating whether clothes in the clothes processing equipment are clamped or not, and when the detection signal indicates that the clothes in the clothes processing equipment are clamped, a barrel of the clothes processing equipment is controlled to change the rotating direction. By means of the control method of the clothes processing equipment, the problems that clothes are damaged and even the window pad is torn when the clothes processing equipment operates due to the fact that the clothes are clamped between the window pad and the clothes putting opening structural part can be prevented.

The present invention discloses a charging cable storage device on a new energy charging pile, comprising a main body, an electric box is arranged inside the left side of the main body, a partition is fixedly installed on the inner surface of the right side of the main body, the partition is closed inside to form a cable box, a storage device is fixedly installed on the inner bottom of the cable box, the storage device comprises a storage bucket, the storage bucket is fixedly installed on the inner bottom of the cable box, a spring one is fixedly connected to the inner wall of the storage bucket, a resist plate is fixedly connected to the top of a spring two, and one resist plate is fixedly connected to every two springs one, a rotating shaft is rotatably connected to the bottom of the storage bucket, and a winding rod is fixedly connected to the outer surface of the rotating shaft. The charging cable storage device on the new energy charging pile drives the rotating shaft to rotate by arranging a motor to drive the winding rod fixedly installed on the rotating shaft to automatically retract the cable, and damage to the cable due to excessive extrusion is avoided by arranging a connection between the spring one and the resist plate.

This application relates to the field of battery technology, providing an electrode sheet and a battery cell. The electrode sheet includes a current collector and a tab. The current collector is the main component of the tab, and the tab is connected to the current collector. The tab can be connected to an external structure to conduct electricity. Both the tab and the current collector are thin sheet structures. When the electrode sheet passes through a conveyor roller and the moving direction of the electrode sheet switches between horizontal and vertical directions, the tab will bend along the arc-shaped surface of the conveyor roller. The tab separator groove can divide the tab into at least two parts, which can reduce the internal stress of the tab during bending deformation and prevent the tab from tearing when bending and deforming through the conveyor roller. This can result in a higher yield rate during the preparation of the electrode sheet of this application and reduce the preparation cost of the electrode sheet.

The utility model relates to the technical field of battery processing, and provides a full-automatic double-sided paper pasting mechanism for a cylindrical battery, which comprises a cleaning box and a case, a first motor is fixedly mounted on one side of the cleaning box, a feeding roller is fixedly mounted at the output end of the first motor, and a cleaning brush is fixedly mounted in the cleaning box; and a feeding opening is fixedly formed in the cleaning box. The length of a feeding roller is smaller than that of a battery, when the feeding roller moves the battery, a brush on a cleaning brush can clean the battery, it is prevented that dirt on the battery affects pasting of a sticker, a punching hole is formed in a punching plate, and when a punching rod punches a sticker tape through the punching hole, the sticker tape can be punched through the punching hole, so that the sticker tape can be punched through the punching hole. The stamping plate can support the sticker tape and prevent the sticker tape from being torn, the sticker tape is arranged outside the winding drum and the feeding drum, a part of the sticker tape can be wound through the winding drum when the second motor is started, and then the sticker tape which is not stamped moves upwards.

The utility model discloses outdoor side seam skirt expansion piece belongs to the related technical field of clothing, outdoor side seam skirt expansion piece, including wind clothes, the top of wind clothes is connected with hat through slide fastener, and the edge position of hat is provided with the collection of rope, the inside lower hem position of wind clothes is provided with the leg bandage, and the setting number of leg bandage is two, and two leg bandage are located respectively in the inside of wind clothes and close to the position of both ends, and the inside lower hem center position of wind clothes is provided with the slit, and the reflective skirt is sewed on the slit, and the reflective skirt extends from the inside of slit to the outside of slit, and the outside of wind clothes is provided with the air -permeable bag mouth. It can reduce the clothes to the restraint of leg action, reduce the wind resistance when riding, solve the problem that the lower hem is tight when straddling, avoid wind clothes fabric tearing or seam open, simultaneously, can form effective rain -shelter, and the unfolded reflective skirt can prevent rainwater accumulation or splash wet trousers, improve the practicality of wind clothes in rainy day environment.

The invention discloses a battery piece and a photovoltaic module, the battery piece comprises a battery piece body, a plurality of auxiliary grid lines, a plurality of main grid lines and a plurality of welding strips, and the plurality of auxiliary grid lines are arranged on the battery piece body at intervals; the plurality of main grid lines are arranged on one side, deviating from the battery piece body, of the auxiliary grid lines at intervals and intersect with the auxiliary grid lines; the extension directions of the multiple welding strips are the same as the extension direction of the main grid line, the welding strips are located on the sides, away from the auxiliary grid lines, of the main grid line in a one-to-one correspondence mode, each welding strip comprises a welding strip body and a bearing film wrapping the outer side of the circumferential direction of the welding strip body, and the bearing films are used for fixing the welding strip bodies to the main grid line. According to the battery piece, the welding strip is fixed to the main grid line through the bearing film, the welding strip and the main grid line do not form alloy, tearing between the welding strip and the main grid line in the transferring process of the battery piece is avoided, meanwhile, only the main grid line is arranged on the battery piece, the use amount of silver paste can be reduced, and then the cost of the battery piece can be reduced.

The utility model discloses a stage lamp with a limiting protection function, and particularly relates to the technical field of stage lamps, which comprises a lamp holder, a rotating mechanism is arranged in the lamp holder, a supporting rod is hinged to the top end of the rotating mechanism, a lamp body is mounted at the top end of the supporting rod, and a fixing plate is welded to the edge of the top end of the rotating mechanism. A swing assembly is installed on one side of the fixing plate, one end of the swing assembly is in sliding connection with one side of the supporting rod, a supporting plate is arranged in the lamp holder, a rotating mechanism is installed on the supporting plate, a sliding rail is installed on one side of the supporting rod, the sliding rail is in sliding connection with one end of the swing assembly, and limiting blocks are installed at the two ends of the sliding rail. The stage lamp not only can rotate back and forth, but also can fluctuate and swing in the back-and-forth rotating process, so that the lamplight atmosphere feeling created by the stage lamp is improved, meanwhile, the stage lamp can be limited in the rotating process and the fluctuating process respectively, and the stage lamp in the moving state is protected.

The invention discloses a clothing design line tracing device, comprising a roller, wherein the roller is hollow inside, a plurality of needles are arranged on the outer side of the roller, a fixed shaft is arranged in the middle of the roller, a rotating seat is arranged on the outer side of the fixed shaft, a handle is arranged on the rotating seat, and further comprises: a driving block, wherein the driving block is arranged on the outer side of the fixed shaft, a movable unit, wherein the movable unit is rotatably arranged on the outer side of the roller inner cavity, and a transmission member, wherein the transmission member is movably arranged on the outer side of the roller. The clothing design line tracing device can squeeze the needle through the driving block to make it extend out of the roller hole when tracing, and can be retracted into the roller when not in use; and when the needle is separated from the rolled hole during tracing, the transmission member can be squeezed by the continuous movement of the roller, thereby making the transmission member drive the movable unit to move toward the outer side of the roller, so that the position of the needle is always above the rolled hole and is disposed with the cloth until the needle completely leaves the cloth, thereby preventing the needle from being separated from the cloth and causing tearing of the cloth.

The utility model belongs to the field of hot-fix rhinestone pattern arrangement processing, and discloses a hot-fix rhinestone pattern arrangement processing device which comprises a bearing platform used for bearing a pattern arrangement template and a plurality of first conveying roll shafts arranged on the upper side of the bearing platform and used for conveying sticker layers of hot-fix rhinestones. The tensioning assembly can move up and down and is used for pressing down a sticker layer of the hot-stamping paper, the pressing-down unit is arranged over the bearing platform and is used for pressing down the sticker layer of the hot-stamping paper on the pattern arrangement template, and the first conveying roller shafts are arranged on the two opposite sides of the tensioning assembly and the two opposite sides of the pressing-down unit respectively; the downward pressing unit comprises two downward pressing modules which are sequentially arranged in the arrangement direction of the first conveying roller shafts at intervals. According to the scheme, bubbles can be prevented from being formed between the sticker layer of the hot stamping paper and the pattern arrangement template.

The utility model discloses a top patch assembly and a battery, and relates to the technical field of lithium battery parts. The top patch assembly comprises a top patch and a release film, and an adhesive layer is arranged on the inner surface of the top patch; the release film comprises a film body and a handle, the film body is attached to the top patch through an adhesive layer, and the handle is fixedly arranged at one end of the film body; the film body is provided with a first cutting opening penetrating through the film body, the first cutting opening is located at the end, close to the handle, of the film body, and one end of the first cutting opening extends to the attaching area of the film body and the adhesive layer. According to the utility model, the problem that the top patch cannot be separated from the release film and is easy to tear when the release film is torn can be solved, and the efficiency of automatic assembly of the lithium battery is improved.

The utility model discloses an eraser assembly capable of preventing breakage. The eraser assembly comprises an eraser body, an inner shell, an outer shell and a rotary cover. The eraser body is in a column shape, and the eraser body is arranged in the inner shell in a sleeved mode. Rotating shafts are formed on the two sides of the top of the inner shell respectively, and the two sides of the rotating cover are rotationally connected to the two rotating shafts respectively; the side surface of the rotary cover is fan-shaped; the inner shell is movably arranged in the outer shell in a sleeved mode. The eraser assembly has the advantage that the eraser is prevented from being torn or broken easily.