CN114192665B - Online flexible production line for corrugated boards - Google Patents

Abstract

A flexible online production line for corrugated boards relates to the technical field of CNC processing of sheet metals, and is used to solve the problem in the prior art that the production line is not flexible enough for the punching operation of corrugated boards. A flexible online production line for corrugated boards comprises an unwinder, a cold bending forming machine and a punching machine arranged in sequence. The punching machine comprises a base, a gantry, a punch frame, a lower die seat and a lifting frame. The gantry is slidably connected to the base, and a sliding drive mechanism is provided between the gantry and the base, and the sliding drive mechanism is used to drive the gantry to slide on the base. The gantry comprises a gantry mouth, the punch frame comprises a passage mouth, the lower die seat is arranged in the passage mouth, and a plurality of turret punch assemblies are connected to the punch frame. The beneficial effect is that it is conducive to the flexible adjustment of the punching position.

Description

A kind of corrugated board online flexible production line

Technical Field

The invention relates to the technical field of numerical control processing of sheet metal, in particular to an online flexible production line for corrugated boards.

Background Art

Corrugated board is a type of sheet metal with a wavy or nearly wavy cross section. The processing of corrugated board includes unwinding the metal sheet material roll, leveling the unwinding metal sheet, cold bending and hole processing.

The uncoiler is a special equipment for leveling metal plates. It is used to level steel plates and uneven plates. According to the relevant configuration, it can form an uncoiler, leveling, shearing production line and other plate product production lines. It is suitable for machinery, vehicles, metal products, household appliances, steel structures, decoration and other industries. The uncoiler can be used to unwind the metal plate material coil and level the unwinding plate.

Roll forming machines are a type of equipment that can cold bend metal sheets. Roll forming machines used to process corrugated sheets can bend metal sheets into corrugated sheets. Unwinders and roll forming machines are each equipped with a sheet conveyor that can form sheets into sheets. After the corrugated sheets are formed, they need to be punched. Different batches of corrugated sheets have different punching positions depending on their uses.

The driving cylinder may be an assembly of an electric cylinder, a hydraulic cylinder and a pneumatic cylinder, and the driving cylinder comprises a cylinder body and a rod member slidably connected to the cylinder body.

In the prior art production line, either the punching position is fixed or it takes time and effort to adjust the punching position. In the process of processing corrugated board, the punching operation is not flexible enough.

Summary of the invention

The purpose of the present invention is to provide an online flexible production line for corrugated boards, which is used to solve the problem that the production line in the prior art is not flexible enough in the corrugated board punching operation.

The technical solution adopted by the present invention to solve the technical problem is:

An online flexible production line for corrugated boards, comprising an unwinding machine, a cold bending forming machine and a punching machine arranged in sequence;

The punching machine comprises a base, a gantry, a punch frame, a lower die seat and a lifting frame, wherein the gantry is slidably connected to the base, and a sliding drive mechanism is provided between the gantry and the base, and the sliding drive mechanism is used to drive the gantry to slide on the base;

The gantry frame includes a gantry port, the punch frame includes a passage port, the lower die seat is arranged in the passage port, and a plurality of turret punch assemblies are connected to the punch frame;

The turret punch assembly includes a sleeve, a punch rod and a reset member, the punch rod is slidably connected in the sleeve along the up-down direction, the upper end of the punch rod is exposed from the upper end of the sleeve member, the reset member is used for the rebound of the punch rod pressed down, the sleeve is located above the lower die seat, the sleeve is arranged on the punch frame, the lower die seat is provided with a plurality of lower die holes, each of which is aligned with a punch rod;

The lifting frame is located above the punch frame, and the lifting frame can be slidably arranged on the gantry along the up and down directions. A lifting drive mechanism is connected between the lifting frame and the gantry. The lifting frame is provided with a punch rod channel, and the punch rod channel is located above the punch rod. A plurality of blocks are slidably connected to the lifting frame, and the block blocks are located on the sides of the punch rod channel. The block blocks can slide in and out of the punch rod channel, and each block is connected to a block driving device, and each turret punch assembly is correspondingly provided with one block.

The beneficial effect is that it is conducive to flexibly and quickly adjusting the punching position, and it is conducive to improving the flexibility of the punching work. The principle of achieving this technical effect is that if the punching position of the corrugated board in its width direction is to be adjusted/selected, the block above the punch rod where the punching position is located needs to be moved to the top of the punch rod, and the block above the punch rod where the punching position is not located needs to be moved away from the top of the punch rod, and then the lifting frame is lowered, and then the block extending above the punch rod presses the punch rod below it to punch the corrugated board; and those blocks above it that do not extend out of the punch rod will not be pressed down to the punching state. Therefore, the present invention can flexibly adjust the punching position in the width direction of the corrugated board, and the process of adjusting the punching position does not require the temporary replacement and disassembly of the turret punch assembly. If the punching position in the length direction of the corrugated board is to be adjusted, the corrugated board is stopped from being conveyed, and then the gantry is moved, and then the corresponding position of the turret punch assembly in the length direction of the corrugated board is adjusted, and then the punching position is adjusted.

Furthermore, a plurality of lifting wheels are rotatably connected to the front and rear sides of the gantry, and the lifting wheels are distributed on the front and rear sides of the gantry gate.

The beneficial effect is that the gantry seat can move relative to the processed corrugated board more smoothly.

Furthermore, the sliding drive mechanism includes a screw, a nut and a screw drive motor, the screw is rotatably connected to the base, the nut cooperates with the screw, the nut is connected to the gantry, and the screw drive motor is transmission-connected to the screw.

The beneficial effect is that it is conducive to accurately adjusting the sliding stroke of the gantry on the base, thereby facilitating accurate adjustment of the relative position of the plate and the turret punch assembly, thereby ensuring the accuracy of the hole position.

Furthermore, the lifting drive mechanism includes a lifting drive cylinder and a connecting rod group, the lifting drive cylinder is connected between the gantry and the lifting frame, and the connecting rod group is used to keep the lifting frame lifting in parallel.

The beneficial effect is: thereby ensuring the parallel lifting of the lifting frame, ensuring the effective pressing of the turret punch components that need to be pressed, and ensuring the effective punching of each turret punch component

Further, the connecting rod group includes a left connecting arm, a right connecting arm, a left upper connecting rod, a left lower connecting rod, a right upper connecting rod, a right lower connecting rod and an intermediate connecting rod, the intermediate connecting rod is arranged perpendicular to the lifting direction of the lifting frame, the upper end of the left connecting arm and the upper end of the right connecting arm are respectively fixed to the gantry, the left connecting arm and the right connecting arm are distributed on the left and right sides of the lifting drive cylinder, the upper end of the left upper connecting rod is hinged to the lower end of the left connecting arm, the lower end of the left lower connecting rod is hinged to the lifting frame, the upper end of the right upper connecting rod is connected to the lower end of the right connecting arm, and the lower end of the right lower connecting rod is hinged to the lifting frame;

The lower end of the left upper connecting rod, the upper end of the left lower connecting rod and the left end of the middle connecting rod are hinged at the first rotating shaft;

The lower end of the right upper connecting rod, the upper end of the right lower connecting rod and the right end of the middle connecting rod are hinged at the second rotating shaft.

The beneficial effect is that it is helpful to ensure the smooth parallel lifting of the lifting frame, thereby ensuring the accuracy and smoothness of the punching work.

Furthermore, the turret punch assembly includes an upper limit position member, the reset member is a first compression spring, the upper limit position member is fixedly connected to the upper end of the punch rod, the first compression spring is sleeved on the punch rod, the first compression spring is located above the upper end of the sleeve, and the first compression spring is located below the upper limit position member.

The beneficial effects are: it is conducive to ensuring the smooth downward pressing and rebound of the punch rod, and it is also conducive to driving the corresponding stopper to effectively press the upper end of the punch rod through the lifting of the lifting frame.

Furthermore, an upper retaining ring is provided at the upper end of the sleeve, a bracket plate is sleeved on the sleeve, the retaining ring is located above the bracket plate, each bracket plate is sleeved with two bracket bolts, the bracket plate can slide relative to the bracket bolts, the bracket bolts are detachably connected to the punch frame, a second compression spring is sleeved on the bracket bolts, and the second compression spring is located between the bracket plate and the punch frame.

The beneficial effect is that it is convenient to return the material during the material return process and is also convenient for quickly replacing the turret punch assembly. When the turret punch assembly needs to be replaced, the sleeve is pulled out from the corresponding bracket plate, and then the sleeve of the new turret punch assembly is inserted.

Furthermore, among any two adjacent stoppers, a lower surface of one of the stoppers is higher than a lower surface of the other stopper.

The beneficial effect is that this is suitable for the curved shape of the corrugated board and ensures the depth of the punching.

Furthermore, the bending direction of the generatrix of the lifting wheel is consistent with the bending characteristics of the processed corrugated board.

The beneficial effects are: it is conducive to the stable lifting of the corrugated board and also conducive to the smooth movement of the corrugated board relative to the gantry.

Furthermore, a wheel frame is correspondingly arranged for each of the lifting wheels, the lifting wheels are rotatably connected to the corresponding wheel frame, and the wheel frame is detachably connected to the gantry.

The beneficial effect is that the maintenance work of the lifting wheel is facilitated.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the end face of a corrugated board;

FIG2 is a schematic diagram of an embodiment of the present invention;

FIG3 is a perspective schematic diagram of a punching machine;

FIG4 is an enlarged view of part A in FIG3 ;

FIG5 is a schematic top view of FIG3 ;

Fig. 6 is a schematic cross-sectional view taken along line B-B of Fig. 5;

FIG7 is another form of label display for FIG6;

FIG8 is an enlarged view of portion C in FIG6 ;

FIG9 is a rear view of FIG3 ;

In the figure: 1 corrugated board, 2 unwinding machine, 21 cold bending forming machine, 3 base, 4 gantry, 41 gantry door, 42 lifting wheel, 43 screw, 44 nut, 45 screw drive motor, 46 wheel frame, 47 lifting drive cylinder, 5 punch frame, 51 channel opening, 6 lower die base, 61 lower die hole, 7 lifting frame, 71 punch rod channel, 72 block, 73 block drive device, 8 sleeve, 81 punch rod, 82 limiter, 83 first compression spring, 84 retaining ring, 85 bracket plate, 86 bracket bolt, 87 second compression spring, 9 left connecting arm, 91 right connecting arm, 92 upper left connecting rod, 93 lower left connecting rod, 94 upper right connecting rod, 95 lower right connecting rod, 96 middle connecting rod, 97 first rotating shaft, 98 second rotating shaft.

DETAILED DESCRIPTION

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

For the convenience of description, it is defined that the corrugated board is transported from the "front" to the "back" during the processing.

As shown in FIG. 1 , the flexible production of corrugated board refers to processing the corrugated board 1 into a wave shape.

As shown in Fig. 2, an online flexible production line for corrugated boards includes an unwinder 2, a roll forming machine 21 and a punching machine arranged in sequence. Since the unwinder 2 and the roll forming machine 21 belong to the prior art, their specific structures and working principles are not described here, and they are only schematically represented by two rectangles in the attached figure.

As shown in Figures 2 to 9, the punching machine includes a base 3, a gantry 4, a punch frame 5, a lower die seat 6 and a lifting frame 7. The gantry 4 is slidably connected to the base 3, and a sliding drive mechanism is provided between the gantry 4 and the base 3, and the sliding drive mechanism is used to drive the gantry 4 to slide on the base 3; the gantry 4 includes a gantry port 41, the punch frame 5 includes a passage port 51, and the lower die seat 6 is arranged in the passage port 51, and a plurality of turret punch assemblies are connected to the punch frame 5. The turret punch assembly includes a sleeve 8, a punch rod 81 and a reset member, the punch rod 81 is slidably connected to the sleeve 8 along the up and down direction, the upper end of the punch rod 81 is exposed from the upper end of the sleeve 8, and the reset member is used for the rebound of the punch rod 81 pressed downward, the sleeve 8 is located above the lower die seat 6, the sleeve 8 is arranged on the punch frame 5, and the lower die seat 6 is provided with a plurality of lower die holes 61, and each lower die hole 61 is aligned with a punch rod 81. The bending direction of the upper surface of the lower die base matches the bending direction of the corrugated board. The lifting frame 7 is located above the punch frame 5. The lifting frame 7 is arranged on the gantry 4 so as to be able to be lifted and lowered in the up and down directions. A lifting drive mechanism is connected between the lifting frame 7 and the gantry 4. The lifting frame 7 is provided with a punch rod channel 71, and the punch rod channel 71 is located above the punch rod 81. A plurality of stoppers 72 are slidably connected to the lifting frame 7, and the stoppers 72 are located on the sides of the punch rod channel 71. The stoppers 72 can slide in and out of the punch rod channel 71, and each stopper 72 is connected to a stopper driving device 73, and each turret punch assembly is provided with a stopper 72.

As shown in FIGS. 2 to 9 , the working principle of the present invention is: the sheet coil is unrolled by the unwinding machine 2, and the unrolled sheet is leveled and cut, and then the sheet is cold-bent by the cold-bending forming machine, and then bent into a wave shape, and then a corrugated sheet is formed. The formed corrugated sheet passes through the gantry 41 and the channel 51, and then the formed corrugated sheet stops being transported and punched by the punching machine. The punching machine of the present invention has the beneficial effect of flexibly and quickly adjusting the punching position, and improving the flexibility of the punching work; the principle of achieving this technical effect is: if the punching position of the corrugated board in the width direction is to be adjusted/selected, the block 72 above the punch rod 81 where the punching position is located needs to be moved to the top of the punch rod 81, and the block above the punch rod where the punching position is not required to be moved away from the top of the punch rod, and then the lifting frame 7 is lowered, and then the block 72 extending above the punch rod 81 presses the punch rod 81 below it to punch the corrugated board; and those blocks above them that do not extend out of the punch rod will not be pressed down to the punching state. Therefore, the present invention can flexibly adjust the punching position in the width direction of the corrugated board, and there is no need to perform temporary replacement and disassembly of the turret punch assembly during the process of adjusting the punching position. If the punching position in the length direction of the corrugated board is to be adjusted, the corrugated board is stopped from being conveyed, and then the gantry is moved, and then the corresponding position of the turret punch assembly in the length direction of the corrugated board is adjusted, and then the punching position is adjusted. In the above processing process, the conveying power of the processed sheet is involved, and the conveying force applied to the sheet by the uncoiler 2 or the cold bending forming machine 3 can be used, or a group of devices for conveying the sheet in the prior art can be set at the rear end of the base 3 to assist in conveying. The conveying or temporary fixing or positioning of the sheet belongs to the prior art and will not be repeated here.

As shown in Fig. 1, Fig. 3 and Fig. 5, the front and rear sides of the gantry 4 are rotatably connected with a plurality of lifting wheels 42, and each lifting wheel 42 is distributed on the front and rear sides of the gantry gate 41. The lifting wheels 42 are used to form a certain lifting for the processed corrugated board passing through the gantry gate 41 and the passageway 51, so as to ensure that the processed corrugated board and the gantry 4 can move relative to each other smoothly, and then the relative position of the two can be adjusted conveniently and accurately, and then the processing position in the length direction of the corrugated board can be adjusted conveniently. The bending direction of the generatrix of the lifting wheel 42 is consistent with the bending characteristics of the processed corrugated board 1, so as to facilitate the fitting with the processed corrugated board and improve its lifting and guiding effect on the corrugated board. Each lifting wheel 42 is correspondingly provided with a wheel frame 46, and the lifting wheel 42 is rotatably connected to the corresponding wheel frame 46, and the wheel frame 46 is detachably connected to the gantry 4, so as to facilitate the disassembly and assembly of the lifting wheel.

As shown in Fig. 2, Fig. 3, Fig. 5, Fig. 6 and Fig. 7, the sliding drive mechanism includes a lead screw 43, a nut member 44 and a lead screw drive motor 45. The lead screw 43 is rotatably connected to the base 3, the nut member 44 cooperates with the lead screw 43, and the nut member 44 is connected to the gantry 4. The lead screw drive motor 45 is transmission-connected to the lead screw 43 for transmitting torque. This structure of the sliding drive mechanism is conducive to accurately adjusting the sliding stroke of the gantry 4 on the base 3, and then to accurately adjusting the relative position of the plate and the turret punch assembly, thereby ensuring the accuracy of the hole position.

As shown in Figures 2, 3, 5, 7 and 9, the lifting drive mechanism includes a lifting drive cylinder 47 and a connecting rod group. The lifting drive cylinder 47 is connected between the gantry 4 and the lifting frame 7. The connecting rod group is used to keep the lifting frame 7 lifted and lowered in parallel. In this way, the parallel lifting of the lifting frame is ensured, and the effective punching work of each turret punch is ensured. The connecting rod group includes a left connecting arm 9, a right connecting arm 91, an upper left connecting rod 92, a lower left connecting rod 93, an upper right connecting rod 94, a lower right connecting rod 95 and an intermediate connecting rod 96. The intermediate connecting rod 96 is arranged perpendicular to the lifting direction of the lifting frame 7. The upper end of the left connecting arm 9 and the upper end of the right connecting arm 91 are respectively fixed to the gantry 4. The left connecting arm 9 and the right connecting arm 91 are distributed on the left and right sides of the lifting drive cylinder 47. The upper end of the left upper connecting rod 92 is hinged to the lower end of the left connecting arm 9, the lower end of the left lower connecting rod 93 is hinged to the lifting frame 7, the upper end of the right upper connecting rod 94 is connected to the lower end of the right connecting arm 91, and the lower end of the right lower connecting rod 95 is hinged to the lifting frame 7. The lower end of the left upper connecting rod 92, the upper end of the left lower connecting rod 93 and the left end of the middle connecting rod 96 are hinged at the first rotating shaft 97; the lower end of the right upper connecting rod 94, the upper end of the right lower connecting rod 95 and the right end of the middle connecting rod 96 are hinged at the second rotating shaft 98. This can ensure the smooth parallel lifting of the lifting frame, thereby ensuring the smoothness of the punching work.

As shown in Figures 4, 6 and 8, the turret punch assembly includes an upper limit member 82, and the reset member is a first compression spring 83. The upper limit member 82 is fixedly connected to the upper end of the punch rod 81, and the first compression spring 83 is sleeved on the punch rod 81. The first compression spring 83 is located above the upper end of the sleeve 8, and the first compression spring 83 is located below the upper limit member 82. This is conducive to ensuring the smooth downward pressing and rebound of the punch rod 81, and is also conducive to driving the corresponding block to effectively press the upper end of the punch rod through the lifting of the lifting frame.

As shown in Figures 4, 6 and 8, an upper retaining ring 84 is provided at the upper end of the sleeve 8. A bracket plate 85 is sleeved on the sleeve 8, and the retaining ring 84 is located above the bracket plate. Each bracket plate 85 is sleeved with two bracket bolts 86, and the bracket plate 85 can slide relative to the bracket bolts 86. The bracket bolts 86 are detachably connected to the punch frame 5, and a second compression spring 87 is sleeved on the bracket bolts 86, and the second compression spring 87 is located between the bracket plate 85 and the punch frame 5. This is conducive to the convenient material withdrawal work during the material withdrawal process, and is also conducive to the rapid replacement of the turret punch assembly. When the turret punch assembly needs to be replaced, the sleeve is pulled out from the corresponding bracket plate, and then the sleeve of the new turret punch assembly is inserted.

As shown in Fig. 6, among any two adjacent stoppers 72, the lower surface of one of the stoppers 72 is higher than the lower surface of the other stopper 72. This is suitable for the curved form of the corrugated board to ensure the depth of the punching.

Claims (7)

1. A corrugated board online flexible production line, characterized in that it includes an unwinder, a cold roll forming machine and a punching machine arranged in sequence; The punching machine comprises a base, a gantry, a punch frame, a lower die seat and a lifting frame, wherein the gantry is slidably connected to the base, and a sliding drive mechanism is provided between the gantry and the base, and the sliding drive mechanism is used to drive the gantry to slide on the base; The gantry frame includes a gantry port, the punch frame includes a passage port, the lower die seat is arranged in the passage port, and a plurality of turret punch assemblies are connected to the punch frame; The turret punch assembly includes a sleeve, a punch rod and a reset member, the punch rod is slidably connected in the sleeve along the up-down direction, the upper end of the punch rod is exposed from the upper end of the sleeve member, the reset member is used for the rebound of the punch rod pressed down, the sleeve is located above the lower die seat, the sleeve is arranged on the punch frame, the lower die seat is provided with a plurality of lower die holes, each of which is aligned with a punch rod; The lifting frame is located above the punch frame, and the lifting frame can be slidably arranged on the gantry frame in the up and down direction. A lifting drive mechanism is connected between the lifting frame and the gantry frame. The lifting frame is provided with a punch rod channel, and the punch rod channel is located above the punch rod. A plurality of stoppers are slidably connected to the lifting frame, and the stoppers are located on the sides of the punch rod channel. The stoppers can slide into and out of the punch rod channel, and each stopper is connected to a stopper driving device, and each of the turret punch assemblies is correspondingly provided with one stopper; The sliding drive mechanism comprises a lead screw, a nut and a lead screw drive motor, the lead screw is rotatably connected to the base, the nut cooperates with the lead screw, the nut is connected to the gantry, and the lead screw drive motor is drivingly connected to the lead screw; The turret punch assembly includes an upper limit member, the reset member is a first compression spring, the upper limit member is fixedly connected to the upper end of the punch rod, the first compression spring is sleeved on the punch rod, the first compression spring is located above the upper end of the sleeve, and the first compression spring is located below the upper limit member; An upper retaining ring is provided at the upper end of the sleeve, and a bracket plate is sleeved on the sleeve. The retaining ring is located above the bracket plate. Each bracket plate is sleeved with two bracket bolts. The bracket plate can slide relative to the bracket bolts. The bracket bolts are detachably connected to the punch frame. A second compression spring is sleeved on the bracket bolts. The second compression spring is located between the bracket plate and the punch frame. 2. A corrugated board online flexible production line according to claim 1, characterized in that a plurality of lifting wheels are rotatably connected to the front and rear sides of the gantry, and each lifting wheel is distributed on the front and rear sides of the gantry gate. 3. According to the corrugated board online flexible production line described in claim 1, it is characterized in that the lifting drive mechanism includes a lifting drive cylinder and a connecting rod group, the lifting drive cylinder is connected between the gantry and the lifting frame, and the connecting rod group is used to keep the lifting frame lifting parallel. 4. A corrugated board online flexible production line according to claim 3, characterized in that the connecting rod group includes a left connecting arm, a right connecting arm, a left upper connecting rod, a left lower connecting rod, a right upper connecting rod, a right lower connecting rod and an intermediate connecting rod, the intermediate connecting rod is arranged perpendicular to the lifting direction of the lifting frame, the upper end of the left connecting arm and the upper end of the right connecting arm are respectively fixed to the gantry, the left connecting arm and the right connecting arm are distributed on the left and right sides of the lifting drive cylinder, the upper end of the left upper connecting rod is hinged to the lower end of the left connecting arm, the lower end of the left lower connecting rod is hinged to the lifting frame, the upper end of the right upper connecting rod is connected to the lower end of the right connecting arm, and the lower end of the right lower connecting rod is hinged to the lifting frame; The lower end of the left upper connecting rod, the upper end of the left lower connecting rod and the left end of the middle connecting rod are hinged at the first rotating shaft; The lower end of the right upper connecting rod, the upper end of the right lower connecting rod and the right end of the middle connecting rod are hinged at the second rotating shaft. 5. The on-line flexible production line for corrugated boards according to claim 1 is characterized in that, among any two adjacent blocks, the lower surface of one block is higher than the lower surface of the other block. 6. The online flexible production line for corrugated board according to claim 2 is characterized in that the bending direction of the generatrix of the lifting wheel is consistent with the bending characteristics of the corrugated board being processed. 7. An online flexible production line for corrugated boards according to claim 2, characterized in that a wheel frame is correspondingly arranged for each of the lifting wheels, the lifting wheels are rotatably connected to the corresponding wheel frame, and the wheel frame is detachably connected to the gantry.