Technical Field
The utility model discloses an independently adjustable slitting device for corrugated plastic sheets, belonging to the field of plastic machinery. It is mainly applied in the production of corrugated plastic sheets from powdery raw materials, to longitudinally cut sized, conditioned and cooled corrugated sheets according to required widths.
Background Art
At present, all cutters of the slitting devices equipped on existing corrugated plastic sheet production lines are integrally mounted. During operation, individual cutters cannot be adjusted separately to meet different width requirements of corrugated sheets. In some cases, the entire slitting device has to be disassembled, adjusted and reassembled again.In view of the current development of corrugated plastic sheet manufacturing machinery, there is an urgent demand for an independently adjustable slitting device that allows separate adjustment of the position, angle and other parameters of each cutter with convenient operation and commissioning.
Contents of the Utility Model
The objective of the utility model is to provide an independently adjustable slitting device for corrugated plastic sheets to overcome the defects of existing corrugated plastic sheet manufacturing equipment. The device enables separate adjustment of the position and angle of each cutter and features easy commissioning.
The technical solution is described as follows. The device comprises a slitting frame, traction roller assemblies, idle gears, transmission gears, a driving device, driving gears, pressing roller assemblies and a slitting unit.The slitting frame adopts a six-sided box structure without one side panel defined by the longest edge and the shortest edge of the box. Supports are mounted at four corners of the opposite side panel, and the slitting frame is placed on the ground via the four supports.Multiple U-shaped grooves are evenly arranged along the short-edge direction on one long edge (away from the ground) of each of the two end side panels formed by medium-length edges and the shortest edges of the box. The number of U-shaped grooves is an odd number. The length direction of each U-shaped groove is perpendicular to the short edge of the side panel, and the U-shaped grooves on the two end panels correspond one-to-one.Long grooves are arranged along the long-edge direction on each of the two lateral side panels formed by the longest edges and medium-length edges of the box, adjacent to the long edge with U-shaped grooves. The length direction of each long groove is parallel to the long edge of the side panel, and the long grooves on the two lateral panels lie on the same plane. Protective covers are symmetrically arranged on both sides of the long groove on one lateral side panel.
Each traction roller assembly consists of a traction roller and a drive wheel. Traction rollers with the same quantity as the U-shaped grooves are supported at both ends on the two end panels of the slitting frame provided with U-shaped grooves. Each traction roller is located below the bottom of the corresponding U-shaped groove, and the axes of all traction rollers lie on the same plane. One drive wheel is installed on the outward extending end of each traction roller passing through the side panel of the slitting frame in the same direction. An idle gear is installed between the drive wheels of every two adjacent traction rollers, and each idle gear meshes with both adjacent drive wheels simultaneously.The middle drive wheel meshes with the transmission gear. The driving device is mounted on the base plate of the slitting frame, and the driving gear fitted on the output shaft of the driving device meshes with the transmission gear.
Each pressing roller assembly includes a pressing roller, T-shaped bearing seats and pressing roller cylinders. Two T-shaped bearing seats are installed at both ends of each pressing roller through round holes on their T-shaped planes. Assemblies composed of pressing rollers and T-shaped bearing seats (in the same quantity as traction roller assemblies) are clamped between the lateral sides of the U-shaped grooves on the two end panels via sliding grooves on both sides of the T-shaped bearing seats at both ends of each pressing roller.Pressing roller cylinders, twice the quantity of traction roller assemblies, are correspondingly mounted above the U-shaped opening of each U-shaped groove on the slitting frame. The extending end of the telescopic rod of each pressing roller cylinder toward the T-shaped bearing seat is installed in the round hole at the end of the T-shaped leg of the corresponding T-shaped bearing seat.
The slitting unit comprises a cross beam, vertical slitting plates, supporting roller, mounting plates, handwheel speed reducers, supporting lugs, angle adjusting shafts and cutter assemblies. One rectangular vertical slitting plate is fixed at each end of the cross beam, and the cross beam is arranged near the middle of one long edge of each vertical slitting plate. The two vertical slitting plates are parallel, aligned and perpendicular to the cross beam.Both ends of the supporting roller are supported at the intersection of the other long edge and short edge of each vertical slitting plate away from the cross beam. One mounting plate is fixed on the outer side of one vertical slitting plate. One handwheel speed reducer is mounted on the outer side of the mounting plate away from the other vertical slitting plate. The axis of the output hole of the handwheel speed reducer is perpendicular to the plate surface of the vertical slitting plate.In the direction perpendicular to the long edge of the vertical slitting plate, the handwheel speed reducer is located on the side away from the other long edge relative to the long edge of the vertical slitting plate where the cross beam is arranged. In the direction parallel to the long edge of the vertical slitting plate, the handwheel speed reducer is closer to the supporting roller relative to the cross beam.One supporting lug with a round hole in the middle is mounted on the other vertical slitting plate away from the handwheel speed reducer. The axis of the round hole of the supporting lug is coaxial with the axis of the output hole of the handwheel speed reducer. Both ends of the angle adjusting shaft are supported inside the output hole of the handwheel speed reducer and the round hole of the supporting lug respectively.
Each cutter assembly includes a T-shaped base, cover plates, U-shaped frame, sliding block, cutter holder, cutting blade, pressure plate, screw rod, handwheel and screws. The T-shaped plate surface of the T-shaped base is provided with a round hole whose axis is perpendicular to the T-shaped plate surface.The length of the long edge of the rectangular cover plate is equal to the length of the transverse edge of the T-shaped base. The T-shaped base is mounted on one panel surface of the cover plate via one T-shaped plate surface. The edge of the transverse edge of the T-shaped base adjacent to the T-shaped leg aligns with one long edge of the cover plate.The thickness of the U-shaped frame perpendicular to its U-shaped plane equals the thickness of the T-shaped base perpendicular to its T-shaped plane. The width between the outer surfaces of the two lateral arms of the U-shaped frame equals the length of the long edge of the rectangular cover plate.The U-shaped frame is mounted on the panel surface of the cover plate fitted with the T-shaped base via one U-shaped plane of the frame. The U-shaped opening faces toward the T-shaped base, and the outer surface of the U-shaped groove bottom aligns with the long edge of the cover plate away from the T-shaped base. Another cover plate is mounted on the other T-shaped plane of the T-shaped base and the other U-shaped plane of the U-shaped frame.A round threaded hole with its axis perpendicular to the plate surface is arranged at one end along the length direction on one plate surface of the rectangular sliding block. The length of the short edge of the sliding block is 0.5mm±0.25mm less than the thickness of the T-shaped base perpendicular to its T-shaped plane.The cutter holder is a long rectangular flat plate whose thickness equals the short edge length of the sliding block. A notch is cut at one end along the length direction on one plate surface of the cutter holder.The end of the cutter holder without the notch is mounted on one plate surface of the sliding block at the end away from the threaded hole. The length direction of the cutter holder is perpendicular to the plate surface of the sliding block, and both lateral plate surfaces of the cutter holder align with the long edges of the sliding block.The shank of the cutting blade is clamped in the notch on the plate surface of the cutter holder via the pressure plate, with the cutting edge facing away from the cutter holder.One end of the screw rod is screwed into the threaded hole of the sliding block. Both ends of the screw rod are supported on the two lateral arms of the U-shaped frame, and the axis of the screw rod is parallel to the bottom of the U-shaped groove. A handwheel is installed on the outward extending end of the screw rod passing through one lateral arm of the U-shaped frame away from the cutting blade.Multiple cutter assemblies are mounted on the angle adjusting shaft through the round holes on the T-shaped plate surfaces of the T-shaped bases and locked by screws.The slitting unit is installed above the long grooves on the side panel of the slitting frame that is provided with long grooves and free of protective covers via the two vertical slitting plates. The angle adjusting shaft of the slitting unit faces upward, and the cutting edges of the blades face away from the slitting frame.
On the basis of the prior art, the slitting frame adopts a six-sided box structure without one side panel defined by the longest edge and the shortest edge of the box. Supports are mounted at four corners of the opposite side panel, and the slitting frame is placed on the ground via four supports.Multiple U-shaped grooves are evenly arranged along the short-edge direction on one long edge away from the ground on each of the two end side panels formed by medium-length edges and the shortest edges of the box. The number of U-shaped grooves is an odd number. The length direction of each U-shaped groove is perpendicular to the short edge of the side panel, and the U-shaped grooves on the two end panels correspond one-to-one.Long grooves are arranged along the long-edge direction on each of the two lateral side panels formed by the longest edges and medium-length edges of the box, adjacent to the long edge with U-shaped grooves. The length direction of each long groove is parallel to the long edge of the side panel, and the long grooves on the two lateral panels lie on the same plane. Protective covers are symmetrically arranged on both sides of the long groove on the outer plate surface of one lateral side panel.
Traction rollers with the same quantity as the U-shaped grooves are supported at both ends on the two end panels of the slitting frame provided with U-shaped grooves. Each traction roller is located below the bottom of the corresponding U-shaped groove, and the axes of all traction rollers lie on the same plane. One drive wheel is installed on the outward extending end of each traction roller passing through the side panel of the slitting frame in the same direction. An idle gear is installed between the drive wheels of every two adjacent traction rollers, and each idle gear meshes with both adjacent drive wheels simultaneously. The middle drive wheel meshes with the transmission gear. The driving device is mounted on the base plate of the slitting frame, and the driving gear fitted on the output shaft of the driving device meshes with the transmission gear.
Two T-shaped bearing seats are installed at both ends of each pressing roller through round holes on their T-shaped planes. Assemblies composed of pressing rollers and T-shaped bearing seats (in the same quantity as traction roller assemblies) are clamped between the lateral sides of the U-shaped grooves on the two end panels via sliding grooves on both sides of the T-shaped bearing seats at both ends of each pressing roller. Pressing roller cylinders, twice the quantity of traction roller assemblies, are correspondingly mounted above the U-shaped opening of each U-shaped groove on the slitting frame. The extending end of the telescopic rod of each pressing roller cylinder toward the T-shaped bearing seat is installed in the round hole at the end of the T-shaped leg of the corresponding T-shaped bearing seat.
One rectangular vertical slitting plate is fixed at each end of the cross beam of the slitting unit, and the cross beam is arranged near the middle of one long edge of each vertical slitting plate. The two vertical slitting plates are parallel, aligned and perpendicular to the cross beam. Both ends of the supporting roller are supported at the intersection of the other long edge and short edge of each vertical slitting plate away from the cross beam. One mounting plate is fixed on the outer side of one vertical slitting plate. One handwheel speed reducer is mounted on the outer side of the mounting plate away from the other vertical slitting plate. The axis of the output hole of the handwheel speed reducer is perpendicular to the plate surface of the vertical slitting plate.In the direction perpendicular to the long edge of the vertical slitting plate, the handwheel speed reducer is located on the side away from the other long edge relative to the long edge of the vertical slitting plate where the cross beam is arranged. In the direction parallel to the long edge of the vertical slitting plate, the handwheel speed reducer is closer to the supporting roller relative to the cross beam.One supporting lug with a round hole in the middle is mounted on the other vertical slitting plate away from the handwheel speed reducer. The axis of the round hole of the supporting lug is coaxial with the axis of the output hole of the handwheel speed reducer. Both ends of the angle adjusting shaft are supported inside the output hole of the handwheel speed reducer and the round hole of the supporting lug respectively.
The T-shaped base of each cutter assembly is T-shaped. The T-shaped plate surface is provided with a round hole whose axis is perpendicular to the T-shaped plate surface. The length of the long edge of the rectangular cover plate equals the length of the transverse edge of the T-shaped base. The T-shaped base is mounted on one panel surface of the cover plate via one T-shaped plate surface. The edge of the transverse edge of the T-shaped base adjacent to the T-shaped leg aligns with one long edge of the cover plate.The thickness of the U-shaped frame perpendicular to its U-shaped plane equals the thickness of the T-shaped base perpendicular to its T-shaped plane. The width between the outer surfaces of the two lateral arms of the U-shaped frame equals the length of the long edge of the rectangular cover plate.The U-shaped frame is mounted on the panel surface of the cover plate fitted with the T-shaped base via one U-shaped plane. The U-shaped opening faces toward the T-shaped base, and the outer surface of the U-shaped groove bottom aligns with the long edge of the cover plate away from the T-shaped base. Another cover plate is mounted on the other T-shaped plane of the T-shaped base and the other U-shaped plane of the U-shaped frame.A round threaded hole with its axis perpendicular to the plate surface is arranged at one end along the length direction on one plate surface of the rectangular sliding block. The length of the short edge of the sliding block is 0.5mm±0.25mm less than the thickness of the T-shaped base perpendicular to its T-shaped plane. The cutter holder is a long rectangular flat plate whose thickness equals the short edge length of the sliding block. A notch is cut at one end along the length direction on one plate surface of the cutter holder.The end of the cutter holder without the notch is mounted on one plate surface of the sliding block at the end away from the threaded hole. The length direction of the cutter holder is perpendicular to the plate surface of the sliding block, and both lateral plate surfaces of the cutter holder align with the long edges of the sliding block.The shank of the cutting blade is clamped in the notch on the plate surface of the cutter holder via the pressure plate, with the cutting edge facing away from the cutter holder.One end of the screw rod is screwed into the threaded hole of the sliding block. Both ends of the screw rod passing through the sliding block are supported on the two lateral arms of the U-shaped frame, and the axis of the screw rod is parallel to the bottom of the U-shaped groove. A handwheel is installed on the outward extending end of the screw rod passing through one lateral arm of the U-shaped frame away from the cutting blade.Multiple cutter assemblies are mounted on the angle adjusting shaft through the round holes on the T-shaped plate surfaces of the T-shaped bases and locked by screws.The slitting unit is installed above the long grooves on the side panel of the slitting frame that is provided with long grooves and free of protective covers via the two vertical slitting plates. The angle adjusting shaft of the slitting unit faces upward, and the cutting edges of the blades face away from the slitting frame.
Working Principle
Firstly, select the quantity of cutter assemblies of the slitting unit according to the required width of corrugated sheets. Loosen the screws of the selected cutter assemblies, adjust their relative positions on the angle adjusting shaft, and lock them with screws. Loosen the screws of unselected cutter assemblies, rotate the cutting blade side upward around the angle adjusting shaft, and fasten with screws.Secondly, turn the handwheel of the handwheel speed reducer. After direction conversion, the speed reducer drives the angle adjusting shaft, so as to rotate the cutting blade side of each cutter assembly downward around the angle adjusting shaft until the cutting edge of each blade is lower than the generatrix on the supporting roller.Then, feed extruded, sized, conditioned and cooled sheets into the independently adjustable slitting device for corrugated sheets through the long groove on the protective cover side of the slitting frame. The corrugated sheet is guided out from above the supporting roller of the slitting unit and between the cutting edges via the long groove on the opposite side. The telescopic rods of the pressing roller cylinders extend and push the pressing rollers toward the traction rollers via T-shaped bearing seats.
Start the driving device. It drives each drive wheel to run through the driving gear, transmission gear and idle gears, and the traction rollers pull the corrugated sheet forward. The sheet is longitudinally cut when passing through the cutting edges.
If the cutting edge of one blade becomes shorter due to wear, turn the handwheel of the corresponding cutter assembly separately. The screw rod drives the sliding block, and further pushes the cutter holder and cutting blade outward to compensate dimensional variation caused by blade wear.
Compared with existing equipment in this industry, the utility model adopts the independently adjustable slitting structure. Operators can select the quantity of cutter assemblies as required during production, and separately adjust the relative position and angle of each cutter assembly on the angle adjusting shaft. It completely solves the problem that cutters cannot be adjusted individually on conventional machines and significantly improves production efficiency. Furthermore, the extension length of each cutting blade can be adjusted independently via the handwheel of each cutter assembly to compensate dimensional changes caused by blade wear.
