38results about How to "Guaranteed not to warp" patented technology

The invention discloses a roller-type fed material bagging machine which is provided with a rack and a roller. A bag feeding device and a heat sealing device are arranged on the outer side of the roller. Work grooves are evenly formed in the rollers. A bag propping mechanism is arranged at a feeding position of a material bagging machine and is provided with a bag propping frame. U-shaped bag propping rods are arranged on the two sides of the bag propping frame. Bag opening mechanisms are arranged at the work grooves. The roller-type fed material bagging machine is characterized in that packaging bag tensioning mechanisms are arranged on one sides of the U-shaped bag propping rods; a bag rubbing mechanism is arranged above the work grooves; and bag grabbing and pulling mechanisms are arranged at discharge outlets of the work grooves. By adoption of the bagging machine, tensioning of a bag opening during material feeding of a packaging bag is achieved, tilting-up or wrinkling of the two edges of the packaging bag is avoided, the two walls of the packaging bag can be rubbed open when the bag needs to be opened, and the bag opening effect is guaranteed; and before heat sealing, the bag opening of the packaging bag is pulled to be level, so that the bag opening after heat sealing is flat, and a good packaging effect is achieved.

The invention provides a gel strip pasting machine comprising a gel strip pasting mechanism and a jig mechanism; the gel strip pasting mechanism comprises a winding motor, an unwinding motor, a winding disk, an unwinding disk, a plurality of tension regulating wheels, a gel strip pasting displacement motor, upper and lower gel strip pasting cylinders, a rolling pasting cylinder, gel strip cutting air shears, a gel strip cutting cylinder, a release paper clamping cylinder I, a release paper clamping cylinder II and a gel strip pasting slot; the jig mechanism comprises a jig I, a jig II, a jig I displacement motor, a jig II displacement motor, synchronizing wheels and belts; the jig I and the jig II are both provided with a plurality of parallel slots used for holding single plastic frames; and a material receiving trough is arranged below the jig mechanism, and parallel with the slots. The gel strip pasting machine provided by the invention has the advantages of good gel strip pasting effect, no shutdown during reloading, high efficiency, etc.

The invention discloses a light wall veneer. The light wall veneer comprises a decorative surface layer and a natural fiber reinforced polypropylene plate layer; the decorative surface layer and the natural fiber reinforced polypropylene plate layer are bonded through a moisture curing reaction type polyurethane hot melt adhesive; the natural fiber reinforced polypropylene plate layer is composedof a transition layer, a middle layer and a balance layer, the natural fiber reinforced polypropylene plate layer is formed by: three-dimensionally interweaving 40-60% of natural fiber and 60-40% of polypropylene staple fiber to form a fiber felt, adhering the transition layer and the balance layer to two sides of the fiber felt respectively, and then conducting hot-pressing bonding; wherein the transition layer and the balance layer are polyester non-woven fabrics made of the same material, and the natural fiber reinforced polypropylene plate layer is bonded with the decorative surface layerthrough the transition layer. The natural fiber offcut used in the light wall veneer can be recycled by 100% after being opened, volatile pollutants cannot be generated in the production process, thelight wall veneer is environmentally friendly, and can meet different aesthetic requirements.

The invention relates to a turning conveyor. The turning conveyor comprises a conveyor machine frame, a drive system, a fan-shaped conveyor belt and transmission guide shafts. The machine frame comprises a fan-shaped frame. The transmission guide shafts are arranged in the fan-shaped frame. Tooth grooves are formed in the axial surface of each transmission guide shaft. The invention further relates to a conveyor belt suitable for the turning conveyor mentioned above. Transverse racks are arranged on the inner surface of the conveyor belt and are meshed with the axial tooth grooves of the transmission guide shafts. The corresponding transmission guide shaft is connected with the drive system, and the fan-shaped conveyor belt is driven to cyclically rotate around the transmission guide shafts in the fan-shaped frame to be used for conveying goods; by means of gear transmission achieved through meshing of the tooth grooves of the transmission guide shafts and the racks of the fan-shaped conveyor belt, rotation of the conveyor belt can be easy, and the friction loss between the conveyor belt and the transmission shafts is greatly reduced; and meanwhile the conveyor belt is provided with longitudinal guide strips, a conveyor belt limiting mechanism is arranged on the machine frame, and the problem that transverse displacement and deviation are caused to the conveyor belt during curve operation is thoroughly solved through combination of the longitudinal guide strips and the conveyor belt limiting mechanism.

The invention provides a single-side frame rubber pasting mechanism suitable for rubber pasting of a single-side plastic frame. The single-side frame rubber pasting mechanism comprises a winding motor, an unwinding motor, a winding disc, an unwinding disc, multiple tension adjusting wheels, a rubber pasting displacement motor, a rubber pasting up-and-down air cylinder, a roll-pasting air cylinder, a rubber cutting air shear, a rubber cutting air cylinder, a release paper clamping air cylinder I, a release paper clamping air cylinder II and a rubber pasting groove. The single-side frame rubber pasting mechanism has the beneficial effects that after the rubber pasting mechanism reaches a rubber cutting position, a roll-pasting wheel continues to advance to finish roll-pasting of a rubber strip at the tail end, and it is guaranteed that the tail does not warp up; a discharging opening of the rubber pasting groove is provided with a guide groove, release paper and a silicon rubber strip are separated, and it is guaranteed that skew does not happen during rubber pasting.

The invention discloses a low-cost container top plate hydraulic forming system and belongs to the field of hydraulic forming. The system comprises an upper box body, upper sliding blocks, upper molds, an upper main oil cylinder, a lower box body, lower main oil cylinders, lower sliding blocks and lower molds. The upper main oil cylinder is arranged at the upper part of the upper box body, and theupper sliding blocks are arranged at the lower part of the upper box body; the upper molds are fixed at the bottom of the upper sliding blocks, and a driving unit is arranged between the upper main oil cylinder and the upper sliding blocks; the upper main oil cylinder drives the upper sliding blocks to move in a vertical direction through the driving unit; and the lower sliding blocks are arranged in the lower box body, the lower portions of the lower sliding blocks are connected with the lower main oil cylinders, the upper portions of the lower sliding blocks are connected with the lower molds, and the lower main oil cylinders drive the lower sliding blocks to move in the vertical direction. The low-cost container top plate hydraulic forming system relates to a special machine designed for a container top plate structure, the cost of equipment purchasing is greatly reduced, and the economic burden of a small-and-medium-sized container top plate production enterprise is reduced.

The invention discloses a femtosecond laser glass welding device and method. The method comprises the following steps of 1) dropwise adding a small amount of liquid on one piece of glass, then stacking another piece of glass, enabling the liquid to fill a gap of the to-be-welded glass, and enabling the gap to be reduced under the action of atmospheric pressure, 2) focusing a femtosecond laser beam with relatively high monopulse energy on the contact surface of the two pieces of glass to be welded, and scanning the laser focus at a high speed along a closed path by utilizing a scanning galvanometer to form a semitransparent welding seam at the contact part of the two pieces of glass, and (3) finally, using a femtosecond laser beam with low monopulse energy for low-speed scanning along the semitransparent weld joint, and achieving firmer welding finally. Through the first high-speed scanning, a glass gap can be uniformly reduced, and buckling deformation of two pieces of naturally stacked glass in a welding process is avoided; and a semitransparent microstructure can be pre-formed on the contact interface, so that light absorption during second scanning is enhanced, and the volume of a molten pool is enlarged. The femtosecond laser can be used for achieving sealing welding of glass with large gaps, and the method has the advantages of being high in welding speed, high in welding strength, stable and reliable in process and wide in application range.

This application discloses a bridge-type cantilever crane with a trolley running on reverse rollers and a safety hook. It includes two end girders and two main girders to form a double-girder bridge structure; The running trolley is connected to the track above the beam; both ends of the end beam are equipped with a cart driving device with wheel rims and gear teeth and an anti-tipping device; steel rails are set on the outside of the main beam; both sides of the running trolley are connected with anti-rolling device The device runs on the rails; the two active wheel groups on the running trolley are driven independently; the running trolley is equipped with a rotating mechanism; the thrust bearing in the rotating mechanism is connected to the upper part of the bearing seat; the lower part of the boom shaft in the rotating mechanism is connected to the cantilever The components are connected, and the upper part is connected to the collector slip ring; the electric hoist is installed on the cantilever component and can move back and forth horizontally along the cantilever beam; the cantilever beam is under the main beam and can rotate at any angle on the horizontal plane.

This application discloses a cantilever crane with two running trolleys and end girder anti-tipping, including two end girders and two main girders; Two running trolleys are connected on the track; both ends of the end beam are equipped with a cart driving device and a horizontal wheel device; the inner side of the main beam is equipped with a steel rail and the tread faces downward; two sets of anti-rolling wheel devices are connected to each side of the running trolley. The anti-roller device is lapped on the rail; the active wheel groups on the running trolley are connected by spline sleeve couplings; the running trolley is equipped with a rotating mechanism; the driving device in the rotating mechanism passes through the coupling and the boom Shaft connection; the lower end of the boom shaft is connected to the cantilever member; the cantilever member is provided with a rotation limit device; the cantilever beam is equipped with an electric hoist and can move back and forth horizontally along the cantilever beam; the cantilever beam is placed under the main beam and can rotate; the cantilever beam The car block device is connected on the top and the position is adjustable.

This application discloses a cantilever crane with a lifting trolley and a balanced end beam that can rotate at any angle. It includes a double-girder bridge frame with two end beams and two main beams; ;A lifting trolley and a running trolley are connected to the track above the main beam; the end beam is composed of a balanced end beam and a connecting rod; one end of the balanced end beam is connected to the driving device of the cart, and the other end is connected to the passive wheel set; Horizontal wheel device; the outer side of the main beam is equipped with rails; both sides of the running trolley are connected with anti-roller devices, and the anti-rolling wheel devices are hooked and run on the rails; There is a rotating mechanism; the lower end of the boom shaft is connected to the cantilever member, and the upper end is connected to the collector slip ring; the electric hoist is installed on the cantilever member; the car stop device is connected to the cantilever beam; the cantilever beam is located under the main beam and can rotate at any angle on the horizontal plane.

The invention relates to a control method of a multi-cavity steel component assembling and positioning mechanism, and belongs to the technical field of multi-cavity steel component assembling equipment. The mechanism comprises a square tube positioning and pressing frame. Two ends of the square tube positioning and pressing frame are provided with square tube positioning and pressing pieces connected with the square tube positioning and pressing frame in a displacement mode. An electromagnet is arranged at a front end of an end primary positioning piece. A lower end of the end primary positioning piece is provided with an end primary positioning piece guide rail which is in sliding connection with the end primary positioning piece. A driving motor is arranged at the rear end of the end primary positioning piece. A rack guide rail parallel to the end primary positioning piece guide rail is arranged below the driving motor. The rack guide rail is movably engaged with the drive motor. Thelower end of a displacement cylinder is provided with a lock pressing piece which is movably contacted. Two ends of a pressing roller are provided with bearing seats which are movably sleeved with the pressing roller. Pressing cylinders are arranged on the bearing seats. According to the control method of the multi-cavity steel component assembling and positioning mechanism, the method has the advantages of being compact in structure, accurate in positioning and integrated in assembling and welding; and the machining precision of the multi-cavity steel components is improved, and the machining period is shortened.

This application discloses a cantilever crane with a trolley running on reverse rollers, which includes a bridge structure composed of two end girders and two main girders; There is a track, and the running trolley is connected to the track; a steel rail parallel to the above track and with the tread facing down is set above the outer side of the main beam; two sets of anti-rolling wheel devices are connected to each side of the running trolley through adjusting gaskets, and the anti-rolling wheel devices are connected to each other. Connected to the rail; there is a rotating mechanism in the center of the running trolley; the boom shaft in the rotating mechanism is connected to the cantilever component; a rotation limit device is set between the cantilever component and the running trolley; a set is installed at each end of the two end beams A cart driving device and a safety hook with shaft-connected wheels; an electric hoist is connected to the cantilever member, and the electric hoist can move back and forth horizontally along the cantilever beam; the cantilever beam is placed under the two main beams and can rotate.

The invention relates to the field of polycarbonate resin composite materials, and discloses a halogen-free low-warpage low-linear-expansion-coefficient extrusion-grade thin-wall flame-retardant polycarbonate composite material and a preparation method thereof. The halogen-free low-warpage low-linear-expansion-coefficient extrusion-grade thin-wall flame-retardant polycarbonate material is prepared from the following components in percentage by mass: 25.9 to 46.5 percent of PC (polycarbonate) resin, 2 to 4 percent of PET (Polyethylene terephthalate) resin, 8 to 12 percent of a flame retardant, 1 to 1.5 percent of a flexibilizer A, 1.5 to 3 percent of a flexibilizer B, 12 to 16 percent of a mineral filler, 25 to 30 percent of glass fibers, 0.2 to 0.5 percent of an anti-dripping agent, 0.1 to 0.3 percent of a main antioxidant, 0.1 to 0.3 percent of an auxiliary antioxidant, 0.1 to 0.5 percent of a lubricant, 0.5 to 1 percent of a dispersing agent and 3 to 5 percent of a black seed. The linear expansion coefficient of the material can be reduced, warpage deformation of the material can be prevented, meanwhile, the problems of thin-wall flame retardance and toughness balance of the material are solved, the preparation method is simple in process and high in efficiency, the production cost can be greatly saved, and industrial production is easy.

The invention discloses a half-portal crane with two travelling trolleys and telescopic cantilever beams. A half-portal is composed of an end beam, two main beams and a supporting leg frame; tracks atthe upper portions of the two main beams are connected with the two travelling trolleys; the outer side of each main beam is respectively provided with a steel rail parallel to the track; the two sides of the travelling trolleys are respectively connected with two sets of reverse idler wheel devices, the reverse idler wheel devices hook the steel rails to run; the travelling trolleys are providedwith rotating mechanisms; the lower ends of suspension bar shafts of the rotating mechanisms are connected with cantilever components, and the upper ends of the suspension bar shafts are connected with safe rulers; the cantilever beams in the cantilever components are telescopic beams and composed of multiple sections of bushing beams; the head of each bushing beam is connected with a cable hanger; the tail end of each cantilever beam is connected with an electric block; the cantilever beams are located at the lower portions of the main beams and can stretch out of a workshop to work, and canrotate at any angle in a horizontal plane.

This application discloses a semi-gantry crane with a trolley running on reverse rollers, which includes an end girder, two main girders, and a leg frame, which form a half-gantry; There are tracks above the two main beams, and the running trolley is connected to the tracks; the end beam is composed of a balanced end beam and a connecting rod; the lower beam of the outrigger frame is formed by connecting a balanced ground beam and a connecting beam through a connecting shaft; The end beam and the balance ground beam are connected with the driving device of the cart and the passive wheel group; the side rails are set on the outer side of the main beam; the steel rails are set on the outer side of the main beam; There is a rotating mechanism; the lower end of the boom shaft in the rotating mechanism is connected to the cantilever member, and the upper end is connected to a safety ruler; an electric hoist is installed on the cantilever member and can move back and forth horizontally along the cantilever beam; the cantilever beam is placed under the main beam and can rotate.

The invention discloses a special hydraulic press for a container ejector plate, and belongs to the technical field of hydraulic presses. The special hydraulic press comprises an upper box body, an upper slide block, an upper mould, an upper main oil cylinder, a lower box body, a lower main oil cylinder, a lower slide block and a lower mould, wherein the upper main oil cylinder is arranged on theupper part of the upper box body; the upper slide block is arranged on the lower part of the upper box body; the upper mould is fixedly arranged on the bottom of the upper slide block; a drive unit isarranged between the upper main oil cylinder and the upper slide block; the upper main oil cylinder drives the upper slide block to move in the vertical direction through the drive unit; the lower slide block is arranged inside the lower box body; the lower part of the lower slide block is connected with the lower main oil cylinder, and the upper part of the lower slide block is connected with the lower mould; the lower main oil cylinder drives the lower slide block to move in the vertical direction; a rear baffle device is arranged at one side of the lower box body; and the rear baffle device pulls a board to horizontally move in a direction. The special hydraulic press is a special machine designed for the container ejector plate, so that equipment purchasing cost is greatly reduced, and economical burden of small and medium-sized container ejector plate manufacturing enterprises is reduced.

This application discloses a crane with two running trolleys and a cantilever beam that can rotate at any angle, including a double-girder bridge frame composed of two end beams and two main beams; The electric frame and hanging cable are connected outside the walking platform; two running trolleys are connected to the track above the main girder; the end girder is composed of a balanced end girder and a connecting rod; The beam is connected with an anti-tipping device; both sides of the running trolley are connected with anti-roller devices, and the anti-rolling device hooks on the rails on the outer side of the main beam to run; the running trolley is driven by a ZSC reducer; the running trolley is equipped with a rotating mechanism; the rotating mechanism The lower end of the boom shaft is connected to the cantilever member, and the upper end is connected to the current collector slip ring; the electric hoist is installed on the cantilever beam in the cantilever member; the cantilever beam is located under the main beam and can be extended outside the workshop, and can be rotated at any angle on the horizontal plane .

This application discloses a bridge-type cantilever crane with two running trolleys and anti-tipping end girders, including two end girders and two main girders to form a double-girder bridge frame; the outer sides of the two main girders are equipped with walking platforms , where one of the walkways is connected to the electric frame and the hanging cable; the track above the main girder is connected to two running trolleys; Both sides are connected with anti-roller devices, and the anti-roller devices are hooked and run on the rails outside the main girder; the running trolley adopts a drive device connected with a "three-in-one" reducer and a floating shaft; the thrust bearing in the rotating mechanism on the running trolley is connected to the The upper part of the bearing seat; the lower end of the boom shaft is connected to the cantilever member, and the upper end is connected to the safety ruler; two travel switches are connected to the running trolley; the electric hoist is installed on the cantilever member and can move back and forth along the cantilever beam; the cantilever beam is located under the main beam and Can rotate.