1121results about How to "Avoid wrinkles" patented technology

The invention belongs to the technical field of film tensile testing devices, and particularly relates to a plastic film tensile testing device, which comprises a detection bottom plate, the upper end of the detection bottom plate is slidably connected with two moving plates along the horizontal direction; the stretching mechanism is arranged at the upper end of the detection bottom plate and is used for driving the two moving plates to move oppositely; and the two clamping mechanisms are symmetrically arranged on the opposite sides of the two moving plates and used for clamping and fixing the plastic film, and each clamping mechanism comprises a fixing block fixedly connected to the side wall of the corresponding moving plate. By arranging the length adjusting mechanism, in the clamping process, for plastic films with different thicknesses, the downward sliding distances of the pressing block are different, so that the pressure borne by the piezoresistor below the pressing block is different, the stretching parameters of the piezoresistor can be adaptively adjusted according to the thicknesses of the films, and the clamping efficiency is improved. And the detected tensile strength of the plastic film is more consistent with the actual performance.

The invention relates to the technical field of puncture detection and discloses a puncture detection method and device for puncture-resistant film production, and the device mainly comprises a support frame, a base, a mounting plate, a pressure detection device, a puncture needle, a clamping seat, a fixing block and the like, and guide rods are fixedly connected to the left and right side walls of the clamping seat and located on the side edge of the fixing block; and a movable block is slidably connected to the guide rod in a sleeving mode, a rectangular groove is formed in the movable block, an electromagnetic block is fixedly arranged in the position, located in the middle of the bottom wall of the rectangular groove, of the interior of the movable block, and a movable plate is slidably connected to the interior of the rectangular groove. According to the puncture-resistant film flattening device, after a puncture-resistant film penetrates through a through groove in a clamping seat and is clamped by a fixed block and a sliding block, a movable block is pulled to slide on a guide rod, so that a movable plate in the movable block can abut against the puncture-resistant film, at the moment, the movable plate and the movable block synchronously move, and then the puncture-resistant film can be flattened through the moving movable plate; and the puncture-resistant film is prevented from wrinkling after being clamped, so that data of puncture-resistant detection is prevented from being influenced.

The utility model relates to an embossing device for processing paper products, and aims to solve the technical problems that when the existing embossing device processes the paper products, the paper products conveyed by a conveyor belt are easy to generate wrinkles, so that the embossed paper products are wrinkled, patterns are uneven, and the embossing quality of the paper products is influenced. A belt conveyor is mounted in an inner cavity of the U-shaped table, a rack is mounted at the top of the U-shaped table, a driving mechanism is mounted at the top of the rack, and an embossing mechanism is mounted on the inner side of the rack; electric telescopic rods are installed on the two sides of the top of an inner cavity of the rack correspondingly, driving motors of the two electric telescopic rods are fixedly connected with adjusting plates correspondingly, connecting blocks are fixedly connected to the two sides of one ends of the outer sides of the two adjusting plates correspondingly, and the opposite ends of the two sets of connecting blocks are rotationally connected with connecting rods through connecting shafts correspondingly. The embossing device has the advantages that the part, needing to be embossed, of the paper product is tightened, so that the paper product is prevented from wrinkling before being embossed, and the embossing quality of the paper product is improved.

The invention relates to the technical field of warp knitting fabric production, in particular to a warp knitting fabric tension constant type winding device and a warp knitting machine. The warp knitting fabric tension constant type winding device comprises a base, and a winding roller is detachably installed on the base; the elastic tensioning assembly is arranged on the base, and the warp knitting fabric penetrates through the elastic tensioning assembly to be wound on a wind-up roller; the transmission assembly is connected with the elastic tensioning assembly and is in rolling fit with the warp knitting fabric wound on the winding roller, the transmission assembly comprises an abutting structure and a connecting structure, and the abutting structure can drive the connecting structure to act according to the thickness of the warp knitting fabric wound on the winding roller; the position of the elastic tensioning assembly is switched; and the tiling assembly is arranged on the base, the tiling assembly can pull the two sides of the warp-knitted fabric in the process that the warp-knitted fabric is wound, the winding quality is improved, and wrinkles caused when the warp-knitted fabric is wound due to the fact that the middle of the warp-knitted fabric is loose are prevented.

The utility model provides a lithium battery foil continuous rubberizing mechanism which comprises a gummed paper unwinding mechanism, a main driving mechanism, a release paper tearing mechanism, a tension control mechanism, a tension detection mechanism, a release paper winding mechanism and a rubberizing roller, an adhesive tape on the adhesive tape unwinding mechanism sequentially passes through the main driving mechanism, the release paper tearing mechanism, the tension control mechanism and the tension detection mechanism, the adhesive tape is wound on the release paper winding mechanism by release paper torn by the release paper tearing mechanism, and the adhesive tape from the adhesive tape is pasted on a foil material by the adhesive tape pasting roller. According to the utility model, the linear speeds of the gummed paper and the foil can be kept the same, so that the tension of the gummed paper is kept constant after being set, and the foil and the adhesive tape can be prevented from wrinkling by adjusting the tension.

The invention discloses a thin film traction winding machine which comprises a rack, two sets of mounting frames are fixedly connected to the top of the rack, a set of guide rollers are rotationally connected into each mounting frame, a pair of directional sliding grooves are formed in the top of the rack, and a set of traction frames are fixedly connected to the position, between the two sets of mounting frames, of the top of the rack; adjusting grooves are formed in the traction frame, a set of traction rollers are slidably connected between the two sets of adjusting grooves, a limiting material guiding structure is installed at the position, below the material guiding rollers, of the top of the rack, a set of winding frame is fixedly connected to the right side of the top of the rack, a U-shaped containing groove is formed in the top of the winding frame, and a winding rod is placed in the U-shaped containing groove. The film winding device has the beneficial effects that the conveying tension degree of a film can be adjusted in the winding process through design, the position deviation of the film during conveying is avoided, and the flatness of the wound film and the winding quality of the film are improved.

The utility model discloses a split type packaging machine bag making device which comprises a base, the top of the base is fixedly connected with a bag making box, sliding grooves are formed in the left side wall and the right side wall in the bag making box, a moving assembly is arranged in the bag making box, and a discharging assembly is arranged at the top of the bag making box. By arranging a bag making box, a sliding groove, a sliding block, a side electric rod, electric suction cups, a movable plate, a lower electric rod, a fixed block, a small electric rod and a push plate, a packaging bag is placed between the two electric suction cups, then the electric suction cups are started, the two sides of the packaging bag are sucked and then separated, and therefore the packaging bag is opened, and then the push plate is moved downwards; the naming push plate stretches into the packaging bag opening and then is unfolded, so that the packaging bag opening is completely opened, wrinkles are avoided, then the packaging bag is moved to the discharging hopper to be injected, the production efficiency is improved, the packaging accuracy is improved, and waste is reduced.

The invention discloses a film laminating machine with a positioning structure for food label production and a use method, relates to the technical field of film laminating machines, and aims to solve the problems that in the film laminating process, the traction speed fluctuates, so that materials at the laminating position are not completely laminated after the speed is increased, non-laminated positions exist among the materials, and the film laminating quality is poor. Through the friction force between the sliding roller and the material, after the traction speed of the material is increased, the sliding roller slides in the sliding groove through the cooperation of inertia and the friction force, the included angle between the film and the bottom of the covering and pressing roller and the included angle between the paper and the bottom of the covering and pressing roller are changed, and the attaching pressure of the paper and the film to the bottom of the covering and pressing roller is increased; the laminating pressure of the increased paper and the film to the bottom of the laminating roller is matched with the rolling between the laminating roller and the fixed roller, so that the laminating and laminating effect is improved, and the phenomenon that the laminating effect is reduced due to the incomplete laminating phenomenon between the label film and the paper caused by the fluctuation of the traction speed is avoided.

The invention provides a lithium ion diaphragm and a preparation method thereof and a preparation method of a lithium ion battery, the preparation method of the lithium ion diaphragm comprises the following steps: preparing oily positive electrode coating slurry with butanone as a solvent, and adding an aerogel additive into the oily positive electrode coating slurry; preparing water-based negative electrode coating slurry with ethanol as a solvent, wherein an aerogel additive is added into the water-based negative electrode coating slurry; and respectively coating the oily positive electrode coating slurry and the water-based negative electrode coating on two sides of a base membrane to obtain the lithium ion diaphragm with the oily positive electrode coating, the base membrane and the water-based negative electrode coating arranged in sequence. An aerogel additive is added into the oily positive electrode coating and the water-based negative electrode coating, so that the infiltration effect of the electrolyte is improved, and the high-temperature thermal shrinkage resistance is improved; the oily positive electrode coating slurry adopts an oily system, so that the bonding performance of an oily positive electrode coating and a positive plate is improved, and the aqueous negative electrode coating slurry adopts a hydrophilic system, so that the bonding performance of an aqueous negative electrode coating and a negative plate is improved.

The invention discloses a single-sided flexible circuit board and a manufacturing method thereof. The method comprises the following steps: providing a roll material double-sided board; performing exposure and development on the two side surfaces, so that a circuit exposure pattern is formed on the first side surface and the second side surface is not exposed, and obtaining a to-be-etched double-sided board; etching the two side surfaces to obtain a semi-finished coil circuit board; according to preset protective film pasting parameters, a protective film is pasted on the first side face of the semi-finished product coil material circuit board, single-piece cutting is carried out, and a plurality of single-piece double-sided boards are obtained; exposing and developing the two side surfaces of each single double-sided board, so that the protective film on the first side surface is not exposed and the second side surface is exposed, and obtaining a semi-finished single-sided board corresponding to each single double-sided board; and etching the two side surfaces of each semi-finished single-sided board to obtain a plurality of single-sided flexible circuit boards. Based on the support of the roll material double-sided board before etching and the protective film after etching, the problems of wrinkles, abnormal expansion and shrinkage and the like can be effectively avoided.

The utility model discloses a dust-sticking mat processing and slitting mechanism, which belongs to the technical field of dust-sticking mat processing and comprises a slitting table, and the upper side wall of the slitting table is sequentially provided with a placing frame for placing a dust-sticking mat roll, a leveling mechanism, a slitting mechanism and a fixed-length adjusting mechanism from left to right. The upper end of the fixed-length adjusting mechanism is fixedly connected with a clamping mechanism used for fixing one end of the dust-sticking pad, one side of the slitting mechanism is fixedly connected with an infrared distance meter, one end of the clamping mechanism is fixedly connected with a distance measuring plate arranged corresponding to the infrared distance meter, one side of the slitting table is fixedly connected with a control panel, and the control panel is fixedly connected with the cutting table. The control panel is electrically connected with the slitting mechanism, the fixed-length adjusting mechanism and the infrared distance meter. According to the dust-sticking mat slitting device, by arranging the infrared distance meter, the distance measuring plate, the slitting mechanism, the fixed-length adjusting mechanism and the clamping mechanism, automatic fixed-length slitting machining of the dust-sticking mat can be achieved, the working efficiency is high, and the accuracy of the cutting machining length is guaranteed.

The invention provides a textile fabric anti-ultraviolet performance detection device, and relates to the technical field of fabric detection, the textile fabric anti-ultraviolet performance detection device comprises an unwinding mechanism, a first traversing mechanism, a second traversing mechanism and an adjusting traversing mechanism. The unwinding mechanism is used for unwinding and winding the to-be-detected cloth; cloth horizontally penetrates through the first transverse penetrating mechanism and the second transverse penetrating mechanism. The adjusting and penetrating mechanism has a first state and a second state which can be switched, so that the cloth can horizontally extend in the first state, and a downward arc-shaped recess and an upward arc-shaped bulge are formed in the second state. The linear ultraviolet sensor detection mechanism is used for detecting the ultraviolet transmittance of the cloth in the horizontal state; and the arc ultraviolet sensor detection mechanism is used for detecting the ultraviolet transmittance of the arc part of the cloth. The method can accurately detect the ultraviolet permeability of the fabric in different forms, is suitable for quality evaluation of anti-ultraviolet functional textiles, and reduces the quality defects after the textile fabric leaves a factory.

The utility model discloses a tension adjusting device for a cloth rolling machine, which comprises a mounting frame fixed on the cloth rolling machine, the mounting frame corresponds to a cloth rolling shaft of the cloth rolling machine, and a guide roller matched with the cloth rolling shaft of the cloth rolling machine and a limiting block matched with the guide roller are arranged on the mounting frame. Guide pipes matched with the two ends of the guide roller respectively are fixed to the installation frame, springs are installed in the guide pipes, connecting rods moving in the guide pipes are fixed to the springs and rotationally connected with the guide roller, and the limiting blocks are made of elastic materials, movably connected to the installation frame and matched with the guide roller. The tension adjusting device for the cloth rolling machine has the advantages that the tension of a cloth cover can be adjusted in time in the fabric rolling process, wrinkles caused by uneven tension distribution in a cloth roll due to the fact that the tension of the cloth cover is too large or too small and the rolling tension of the fabric in the rolling process is unstable are avoided, and the quality and the using effect of the cloth roll are improved.

The invention relates to the technical field of electrode plate preparation, and particularly discloses a method for preparing a dry-method electrode plate through glue spraying and coating, and the method comprises the following steps: S1, respectively pouring dry-method powder into two feeding mechanisms; s2, vertically unwinding the current collector by an unwinding mechanism; s3, cutting the head ends of the two dry-method self-supporting films which are longitudinally symmetrical along the current collector by a preliminary compounding mechanism; s4, the two attached dry-method self-supporting films and the current collector enter a rolling mechanism to be rolled to form a pole piece; and S5, guiding the pole piece into a single-section drying oven by a guide roller II for drying. The head end of the dry-method self-supporting film is cut off through the head end cutter, and when the dry-method self-supporting film is compounded with a current collector in a rolling mode, the head end of the dry-method self-supporting film is in a flush state, so that the head end of the pole piece formed in a rolling mode is kept in a flush state, and when the pole piece is put into use in the later period, the head end of the pole piece does not need to be cut; therefore, waste of the current collector is avoided.

The invention discloses a fabric winding device with a deviation rectifying function, the fabric winding device comprises a winding frame, a limiting roller and motors, the limiting roller is movably connected to one end of the interior of the winding frame, the two motors are fixedly connected to one end of the surface of the winding frame, the output ends of the two motors are detachably connected with the winding rollers, and the winding rollers are driven to rotate along with operation of the motors. When the cloth is wound, the two sets of winding rollers are driven to rotate, a roller is placed between the two sets of winding rollers, the roller is driven to rotate along with rotation of the two sets of winding rollers, so that the cloth is wound on the surface of the roller, and in the process, the guide assembly can adjust the guide limiting distance of the cloth according to the width of the cloth; in the process that the cloth is wound on the surface of the roller, the anti-wrinkle assembly can roll on the surface of the wound cloth and can ascend along with the thickness of the wound cloth, and the effect that the cloth can be effectively prevented from being scattered and wrinkled in the winding process is achieved.

The invention relates to the technical field of solar photovoltaic equipment manufacturing, in particular to a film feeding device of an EVA film cutting machine. A film feeding device of an EVA film cutting machine comprises a support, a driving roller, a pressing roller, a first adjusting mechanism and a second adjusting mechanism. The driving roller is horizontally arranged on the support, and the driving roller is arranged to be capable of rotating around the axis of the driving roller under driving of the driving mechanism and used for conveying the EVA film. The pressing roller is horizontally arranged above the driving roller and can rotate around the axis of the driving roller. The first adjusting mechanisms are arranged at the two ends of the pressing roller and used for adjusting the height of the pressing roller from the two ends of the pressing roller. The second adjusting mechanism is arranged above the pressing roller and used for applying downward pressure to the middle of the pressing roller. Through the arrangement mode, the pressing roller is in close contact with the upper surface of the EVA film all the time. By means of the design, it is ensured that the EVA film is kept flat in the unfolding process, and the wrinkling or unevenness phenomenon caused by a gap between the pressing roller and the EVA film is avoided.

The utility model relates to a deviation rectifying structure of a PET (Polyethylene Terephthalate) base film coating machine. The deviation rectifying structure comprises a vertical plate, the angle deviation rectifying mechanism comprises an unwinding plate fixed to one side of the vertical plate, an unwinding frame arranged on one side of the unwinding plate in an angle-adjustable mode and an unwinding barrel rotationally installed in the unwinding frame, and the unwinding barrel is sleeved with a base film to be unwound; and the position deviation rectifying mechanism comprises a bottom plate, a deviation rectifying plate movably arranged at the top of the bottom plate, fixing plates fixed to the top of the deviation rectifying plate at intervals, an upper deviation rectifying roller and a lower deviation rectifying roller, wherein the upper deviation rectifying roller and the lower deviation rectifying roller are rotationally installed between the fixing plates and used for clamping a base film. According to the deviation rectifying structure of the PET base film coating machine, the angle deviation rectifying mechanism is arranged to rectify the angle of the base film, and the position deviation rectifying mechanism is arranged to rectify the position of the base film, so that the left and right positions of the base film are prevented from deviating when the base film is unwound, the conveying efficiency of the base film is improved, and the coating effect of the base film is also improved.

The invention discloses a film covering and packaging machine for plastic parts with arc-shaped surfaces, and relates to the technical field of film covering, the film covering and packaging machine for the arc-shaped plastic parts integrates transmission and packaging, and a transmission part of the film covering and packaging machine comprises a mounting plate, a transmission roller, a transmission belt and a driving device; and the packaging part is provided with a leveling roller, an ion fan, a negative pressure dust collector, an electrostatic generator, a steering roller, a film covering roller and a laminating roller, the diameter of the laminating roller is adjustable, the laminating roller adapts to different arc-shaped plastic parts, it is ensured that the film is completely electrostatically adsorbed and attached to the surfaces of the plastic parts, and the laminating quality is guaranteed.

The invention discloses an injection molding part side taking manipulator for injection molding in the technical field of equipment automation. The injection molding part side taking manipulator for injection molding comprises a supporting frame, and a mechanical arm used for in-mold labeling material taking and discharging and an installation frame fixedly assembled with the supporting frame are installed on the supporting frame; the storage rack is mounted on the mounting rack and is used for accommodating the in-mold label in a vertical state, and a discharge hole through which the in-mold label can pass is formed in the end part of the storage rack; the pressing assembly is assembled on the storage rack in a sliding manner and is provided with a spring pressing structure; the blocking assembly is mounted on the side edge of the discharging opening and used for preventing the in-mold labels from being moved out of the storage frame from the discharging opening under the extrusion of the pressing assembly; the force unloading assembly is installed on the storage frame and used for counteracting the constant thrust applied by the pressing assembly and increasing the contact area between the blocking assembly and the in-mold label, the displacement amount and the pre-pressure of the in-mold label are controlled through the gravity of a balancing weight, and compared with air cylinder pressing, the in-mold label pressing device is simple and compact in structure, does not need to be connected with an air circuit and is convenient to install and debug.

The invention relates to the technical field of reflective cloth film covering, and discloses a film covering device and method for reflective cloth production, the film covering device comprises a base, base cloth and a reflective film, the upper end of the base is fixedly connected with a mounting plate, the front end of the mounting plate is movably connected with a rotary table, and the front end of the rotary table is provided with a pressing mechanism; a clamping mechanism is arranged below the pressing mechanism, the front end of the rotary disc is movably connected with a winding drum, and the front end of the winding drum is fixedly connected with a handle. The device has the advantages that feeding, pressing and rolling can be conducted synchronously, the situation that cloth is pulled and damaged due to untimely winding or improper winding is effectively avoided, the clamping cylinder can continuously roll the pressed reflective cloth, the reflective cloth is assisted to be wound, wrinkles can be effectively avoided, and the production efficiency of the reflective cloth is improved. Therefore, the winding quality and efficiency of the reflective cloth are improved.

The utility model provides a winding mechanism of a winding machine, and relates to the technical field of winding mechanisms, the winding mechanism comprises a rack, a winding mechanism is arranged on the surface of the rack, the winding mechanism comprises a rotating rod, the surface of the rotating rod is rotatably connected with a supporting plate through a bearing, the surface of the rack is rotatably connected with a positioning rod through a bearing, and the supporting plate is connected with the positioning rod through a bearing. A first gear is arranged on the surface of the positioning rod, clamping grooves are formed in the two ends of the rotating rod, clamping blocks are connected to the surfaces of the two clamping grooves in a clamped mode, connecting rods are arranged on the surfaces of the two clamping blocks, a second gear is arranged on the surface of one connecting rod, and the second gear is connected with the first gear in a meshed mode. The winding mechanism is arranged, the clamping block is arranged, the position of the winding roller can be fixed, the arranged supporting plate drives the winding roller to rotate, and the initial end of a thin film can be wound on the winding roller conveniently.

According to the full-automatic wafer film laminating machine disclosed by the utility model, the whole BG film is controlled to be in a flat state before being laminated through the matching between the die pressing assembly and the angle fixing assembly, the angle between the BG film between the die pressing roller and the angle fixing roller and the film laminating platform is kept unchanged, and the die pressing roller can exhaust air below the BG film completely, so that wrinkles are avoided; when the BG film is cut, the ring cutter assembly for hot cutting is adopted, a heated blade can be used for cutting the BG film, and the phenomenon that the BG film is wrinkled by a ring cutter in the cutting process is avoided.

The invention is suitable for the technical field of film spraying transmission, and provides film spraying equipment for film spraying production of decorated floors, the film spraying equipment comprises a frame body assembly, and a pressing assembly is fixedly mounted on the frame body assembly; and the frame body assembly comprises a frame body part, a smoothing part which is arranged on the frame body part in a sliding fit mode and an unwinding part which is arranged on the frame body part in an inserted connection fit mode. The surface of an unwinding drum in a cylindrical decoration ground decoration film raw material to be laminated is not provided with a certain anti-idling structure, so that the unwinding drum is prone to idling during unwinding, and the surface of an existing ground decoration film raw material is prone to wrinkling during transmission before lamination, so that the surface of the ground decoration film raw material is prone to being damaged. The left and right displacement deviation is caused in the conveying process, and the later film spraying process is influenced.

The invention belongs to the technical field of sofa leather production, and discloses a microfiber suede sofa leather production winding device which comprises a base, a supporting assembly is movably installed at the top end of the base, a machine base is fixedly installed at the top end of the supporting assembly, and a winding roller is movably installed in the middle of the machine base. Clamping grooves are formed in the positions, close to the upper end and the lower end, of the left side and the right side of the machine base correspondingly, limiting clamping plates located on the outer side face of the winding roller are movably clamped into the clamping grooves correspondingly, and limiting assemblies are fixedly installed on the left side and the right side of the machine base correspondingly. Through cooperation between the supporting assembly and the power assembly, the device can rapidly complete the power transmission process only by controlling the supporting assembly to drive the machine base to descend and cooperating with the power assembly, meanwhile, power transmission can be rapidly relieved during dismounting, the whole process is rapidly completed, a complex dismounting process is not needed, and the dismounting efficiency is improved. Rapid separation of the winding roller can be achieved, and the winding efficiency is improved.

The product packaging device comprises a rack and further comprises a bag storage mechanism, a heat sealing mechanism, a bag taking mechanism, a conveying mechanism and a turning plate feeding mechanism which are arranged on the rack, the bag storage mechanism is used for storing empty bags, the bag taking mechanism is used for grabbing the empty bags in the bag storage mechanism one by one, and the conveying mechanism is used for conveying the empty bags to the turning plate feeding mechanism. The conveying mechanism is used for conveying the bag taking mechanism back and forth between the bag storage mechanism and the heat sealing mechanism, the turning plate feeding mechanism is used for feeding products into hole bags in the bag taking mechanism, and the heat sealing mechanism is used for conducting heat sealing on the bags in the bag taking mechanism after the products are received. The automatic bagging, sealing and packaging machine has the advantages that bags are stored through the bag storage mechanism, the bags are automatically picked up and transferred between the sealing mechanism and the plate turnover mechanism through the bag taking mechanism, the products can be rapidly sealed through the sealing mechanism after being poured into the bags through the plate turnover mechanism, and efficient bagging, sealing and packaging of the products are achieved.

The invention discloses a reciprocating pultruder suitable for a glass fiber reinforced plastic bridge, and the invention relates to the technical field of pultruders. The invention comprises an extruder, the extruder is fixedly connected to the side of the support plate away from the bottom plate, the winding box is fixedly connected to the top of the bottom plate, the winding assembly is slidably connected to the inside of the winding box, the impregnation shell is fixedly connected to the top of the bottom plate, the impregnation assembly is slidably connected to the inner wall of the impregnation shell, the extrusion assembly is fixedly connected to the top of the bottom plate, one side of the winding box is fixedly connected to the side of the threading plate away from the extruder, and the remaining two threading plates are slidably connected to the inside of the impregnation shell, the number of threading plates is set to three, the three threading plates gradually become smaller, and the glass fiber yarns inserted into the three threading plates gradually come together to form a dense structure, which is conducive to improving the strength of the glass fiber reinforced plastic bridge after forming, and the glass fiber yarns unwound from the winding box are far apart, and each fiber is clearly distinguished when punching, and it is not easy to pierce the wrong hole.

The utility model relates to the technical field of quilt covers and quilt cores, in particular to a quilt convenient to sleeve, which comprises a quilt cover main body, an opening is arranged on the upper end face of the quilt cover main body, covering cloth is movably connected to one side of the inner wall of the opening, a first zipper is arranged on the inner side of the opening, and an opening is arranged on the upper end face of the quilt cover main body. When the quilt cover is used, a quilt core can be conveniently sleeved with the quilt cover body, then the snap fastener male faces and the snap fastener female faces are buckled, the four corners of the quilt core and the quilt cover are fixed, the quilt core is prevented from shifting and wrinkling, and comfort is improved; then the protruding block is fixed to the opening through the first zipper and the second zipper, the connection firmness of the quilt core and the quilt cover is improved, after the first zipper and the second zipper are connected, the covering cloth covers the upper end of the protruding block, and then the covering cloth is fixed through mutual pasting of the hook-and-loop fastener hook face and the hook-and-loop fastener loop face.

The utility model belongs to the technical field of mulching film laying, and particularly relates to a mulching film laying device for tobacco planting, which comprises a film laying machine frame, and a mulching film roll is rotatably mounted on the lower portion of the advancing end of the film laying machine frame. A tension adjusting and opening assembly used for opening a mulching film to prevent wrinkles when the mulching film is laid on the mulching film roll is arranged on the side, opposite to the advancing end, of the mulching film roll and located in the middle of the film laying machine frame. The tension adjusting opening assembly comprises an inverted U-shaped lifting plate installed on the lower portion of the film laying machine frame in a lifting mode, a guide roller rotationally installed on the lower middle portion of the U-shaped lifting plate and tension adjusting mulching film opening rollers transversely installed on the outer walls of the two sides of the U-shaped lifting plate in a telescopic mode. The periphery of the guide roller is sleeved with a foam compacting sleeve for compacting a mulching film to cover different concave-convex planting land parcels of tobacco, and the periphery of the tension adjusting mulching film opening roller is sleeved with an anti-skid rubber sleeve for opening the mulching film in a back-to-back and outward mode. The mulching effect of the plastic film is improved and wrinkles are prevented.

The invention relates to the technical field of square-bottom valve bag printing, in particular to a square-bottom valve bag printing position correcting and deviation rectifying device which comprises a machining shell, and a positioning and deviation rectifying mechanism used for supporting and limiting square-bottom valve bags of different models is arranged in the machining shell. A waste gas purifying mechanism used for absorbing printing ink printing waste gas is arranged on the side face of the machining shell, a printing auxiliary mechanism used for removing dust on the surface of the pocket body is arranged at the upper end of the machining shell, and the positioning deviation correcting mechanism comprises a lifting column movably installed in the machining shell. According to the pocket printing device, by arranging the positioning deviation correcting mechanism and utilizing mutual cooperation between a sliding protruding block and a telescopic protruding block, before printing processing, the inner side of a pocket body can be supported and limited, wrinkles or position deviation of the pocket body in the printing process is prevented, the front side and the rear side of the pocket body can be separated, and the printing quality is improved. And ink on one side is prevented from contaminating the other side in the printing process, and the printing quality can be effectively guaranteed.