Automatic unloading method for cold-bent corrugated sheet after being cold-bent by three-roller arc rolling machine

Abstract

The invention discloses an automatic unloading method for cold-bent corrugated plates after being cold-bent by a three-roller arc rolling machine, and solves the problem of how to quickly and automatically unload the arc-shaped cold-bent corrugated plates after being cold-bent by the three-roller arc rolling machine. A roller support hinge seat mounting column (6) and a roller support hinge seat (7) are fixedly arranged on the left end top surface of a discharge receiving frame base (3), and the left end of a boat-shaped roller support (4) is hinged on the roller support hinge seat. A roller support right side supporting column (15) is hinged on the right end lower bottom surface of the boat-shaped roller support. An arc-shaped cold-bent corrugated plate (2) after arc rolling is arranged in the discharge port (1) of the three-roller arc rolling machine. The arc-shaped cold-bent corrugated plate (2) is discharged to an inclined boat-shaped roller support (4) through a left end non-powered conveying roller (18), three active conveying rollers and a right end non-powered conveying roller (22) in sequence. The invention has a high degree of automation and improves work efficiency.

Description

Technical Field

[0001] The invention relates to a cold bending forming equipment for steel plates, and in particular to an automatic unloading device and an automatic unloading method for arc-shaped cold-bent corrugated plates arranged at a discharge port after the corrugated steel plates are cold-bent into arcs by a three-roll arc rolling machine. Background Art

[0002] In the field of infrastructure construction, the construction volume of pipe culverts and bridge holes is increasing; the support system of pipe culverts and bridge holes is traditionally pre-assembled on site using concrete arc blocks; in recent years, with the development of cold-bent steel plate technology, arc-shaped cold-bent corrugated plates have been used in large quantities in the support systems of pipe culverts and bridge holes due to their advantages of saving materials, good support performance, and convenient assembly; the existing production process of arc-shaped cold-bent corrugated plates is: first, the steel plate is cold-bent into a corrugated plate, and then, along the direction of the corrugation, the corrugated steel plate with corrugations is rolled into an arc-shaped cold-bent corrugated plate; the arc-bent cold-bent corrugated plate is rolled using a three-roll arc-rolling machine, and a discharge receiving frame is provided at the discharge port of the three-roll arc-rolling machine, and the top surface of the discharge receiving frame is an upwardly inclined inclined surface, and the arc-shaped cold-bent corrugated plate rolled into an arc is formed while being transferred to the inclined top surface of the discharge receiving frame, and after waiting to be moved out, the three-roll arc-rolling machine is again The next steel plate is rolled and formed; the prior art is to lift the formed arc-shaped cold-bent corrugated plate from the discharge receiving rack by means of an overhead crane, so as to free up the discharge forming position of the discharge receiving rack for the next arc-shaped cold-bent corrugated plate to be discharged; the existing lifting and unloading method has the following problems: (1) the arc-shaped cold-bent corrugated plate after processing is in the form of an arc surface, and the lifting points are not in the same plane. During the lifting operation, the lifting center of gravity is often easily offset, resulting in oblique pulling and oblique lifting, which poses a great safety risk; (2) during the lifting and unloading process, close cooperation of multiple people is required, that is, one overhead crane operator, one finger hanging operator, and two unloading workers are required, which not only consumes a large amount of human resources, but also has low work efficiency; (3) it cannot meet the production needs of mass production of arc-shaped cold-bent corrugated plates. The unloading link will restrict the discharge rhythm of the three-roll arc rolling machine, and is not suitable for mass automated production. Summary of the invention

[0003] The invention discloses an automatic unloading device for a corrugated plate after being cold-bent into an arc by a three-roller arc rolling machine, which solves the technical problem of how to quickly and automatically unload the arc-shaped cold-bent corrugated plate after being cold-bent into an arc by a three-roller arc rolling machine.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] The overall concept of the present invention is to divide the traditional discharging receiving frame with an inclined top surface arranged at the discharging port of the three-roller arc rolling machine into two parts, namely, a fixed discharging receiving frame base and a movable boat-shaped roller support for receiving the discharging arc plate. When the three-roller arc rolling machine is discharging, the boat-shaped roller support is in an inclined state with the left side low and the right side high, so that it cooperates with the discharging system of the three-roller arc rolling machine to complete the discharging task of receiving the arc plate. When the discharging of the arc plate is completed, the boat-shaped roller support is controlled to swing down to a horizontal state so that it is connected with the arc plate conveying line after unloading on the right side, and the discharging arc plate is automatically conveyed away. Afterwards, the boat-shaped roller support is controlled to return to the inclined state to receive the second arc plate completed by the three-roller arc rolling machine. This cycle is repeated to achieve fast-beat automatic unloading.

[0006] An automatic unloading device for arc-shaped cold-bent corrugated plates arranged at the discharge port of a three-roller arc rolling machine comprises the discharge port of the three-roller arc rolling machine and the arc-shaped cold-bent corrugated plates. A discharge receiving frame base is arranged on the right side of the discharge port of the three-roller arc rolling machine, a conveying line for the arc-shaped cold-bent corrugated plates after unloading is arranged on the right side of the discharge receiving frame base, a roller support articulated seat mounting column is fixedly arranged on the left end top surface of the discharge receiving frame base, a roller support articulated seat is arranged on the roller support articulated seat mounting column, and the left end of the boat-shaped roller support is hinged to the roller support articulated seat through a hinge connection mechanism arranged on the lower bottom surface thereof; On the lower bottom surface of the right end of the boat-shaped roller stand, a right side supporting column of the roller stand is hinged, and on the top surface of the boat-shaped roller stand, along the direction from left to right, a left end unpowered conveying roller, a first active conveying roller, a second active conveying roller, a third active conveying roller and a right end unpowered conveying roller are arranged at intervals, and in the discharge port of the three-roller arc rolling machine, an arc-shaped cold-bent corrugated plate that has been rolled is arranged, and the arc-shaped cold-bent corrugated plate passes through the left end unpowered conveying roller, the first active conveying roller, the second active conveying roller, the third active conveying roller and the right end unpowered conveying roller in sequence, and is discharged to the inclined boat-shaped roller stand.

[0007] Two parallel slide sliding support rails are arranged on the base of the discharge receiving frame on the right side of the roller support articulated seat mounting column, and a slide that can slide in the left and right directions is arranged on the two parallel slide sliding support rails, and a right side support column articulated seat is arranged on the top surface of the slide, and the lower end of the right side support column of the roller support is hinged on the right side support column articulated seat; a screw nut is arranged on the lower bottom surface of the slide, a screw is connected in the screw nut, and a screw drive motor is connected to the left end of the screw, and the screw drive motor is fixedly installed on the base of the discharge receiving frame.

[0008] A roller drive motor is arranged on the boat-shaped roller support, and the output shaft of the roller drive motor is connected to the second active conveying roller through a coupling. A driving double sprocket is arranged on the output shaft of the roller drive motor, a first passive sprocket is arranged on the first active conveying roller, a second passive sprocket is arranged on the third active conveying roller, a first driving chain is arranged between the driving double sprocket and the first passive sprocket, and a second driving chain is arranged between the driving double sprocket and the second passive sprocket.

[0009] A gantry column is arranged on the boat-shaped roller support between the first active conveying roller and the second active conveying roller, a downward pressing slider guide rail is arranged on the gantry column, a downward pressing slider is arranged on the downward pressing slider guide rail, a downward pressing roller is connected to the bottom end of the downward pressing slider, a rack is arranged on the side surface of the downward pressing slider, a gear drive motor support is arranged on the boat-shaped roller support, a gear drive motor is arranged on the gear drive motor support, a gear is arranged on the output shaft of the gear drive motor, and the gear and the rack are meshed together; an arc-shaped cold-bent corrugated plate is arranged between the downward pressing roller and the first active conveying roller.

[0010] An automatic unloading method for cold-bent corrugated plates after being cold-bent by a three-roller arc rolling machine, comprising a discharge port of the three-roller arc rolling machine and an arc-shaped cold-bent corrugated plate, a discharge receiving frame base is arranged on the right side of the discharge port of the three-roller arc rolling machine, a conveying line for the arc-shaped cold-bent corrugated plate after unloading is arranged on the right side of the discharge receiving frame base, a movable boat-shaped roller support for receiving the discharge of the arc-shaped cold-bent corrugated plate is arranged on the discharge receiving frame base, the boat-shaped roller support is hinged to the discharge receiving frame base in the form of a swing arm, and when the three-roller arc rolling machine discharges, the boat-shaped roller support is in an inclined position with the left side lower and the right side higher The boat-shaped roller stand is in an inclined state to cooperate with the discharging system of the three-roller arc rolling machine to complete the discharging task of receiving the arc-shaped cold-bent corrugated plate; when the discharging of the arc-shaped cold-bent corrugated plate is completed, the boat-shaped roller stand is controlled to swing down to a horizontal state to connect with the arc-shaped cold-bent corrugated plate conveyor line on the right side after unloading, and the arc-shaped cold-bent corrugated plate after discharging is automatically conveyed away, and then the boat-shaped roller stand is controlled to return to the inclined state to receive the second boat-shaped roller stand completed by the three-roller arc rolling machine, and this cycle is repeated to realize the fast-beat automatic unloading of mass-produced arc-shaped cold-bent corrugated plates.

[0011] The boat-shaped roller support is arranged in the following manner: a roller support articulated seat mounting column is arranged on the left top surface of the base of the discharging receiving frame, a roller support articulated seat is arranged on the roller support articulated seat mounting column, a roller support left end pin shaft seat and a roller support right end pin shaft seat are respectively arranged on the lower bottom surface of the left end of the boat-shaped roller support, and the roller support articulated pin shaft is passed between the roller support left end pin shaft seat and the roller support articulated seat; the roller support right side supporting column is articulated on the roller support right end pin shaft seat; on the top surface of the boat-shaped roller support, a left end unpowered conveying roller, a first active conveying roller, a second active conveying roller, a third active conveying roller and a right end unpowered conveying roller are arranged at intervals from left to right on the top surface of the boat-shaped roller support, and the arc-shaped cold-bent corrugated plate rolled in the discharging port of the three-roller arc rolling machine passes through the left end unpowered conveying roller, the first active conveying roller, the second active conveying roller, the third active conveying roller and the right end unpowered conveying roller in sequence, and is discharged to the inclined boat-shaped roller support.

[0012] The inclined boat-shaped roller support swings down from an inclined state with the left side lower and the right side higher to a horizontal state, which is achieved in the following manner: two parallel skateboard sliding support guides are arranged on the base of the discharge receiving frame on the right side of the roller support articulated seat mounting column, a skateboard that can slide in the left and right directions is arranged on the two parallel skateboard sliding support guides, a right side supporting column articulated seat is arranged on the top surface of the skateboard, and the lower end of the right side supporting column of the roller support is hinged on the right side supporting column articulated seat; a screw nut is arranged on the lower bottom surface of the skateboard, a screw is connected in the screw nut, the left end of the screw is connected to a screw drive motor, and the screw drive motor is fixed on the base of the discharge receiving frame; the skateboard slides to the left through the rotation of the screw drive motor, and the right side supporting column of the roller support is transformed from a vertical upright state to a horizontal lying state, so that the boat-shaped roller support swings downward to a horizontal state.

[0013] A gantry column is arranged on the roller support between the first active conveying roller and the second active conveying roller, a pressing slider guide rail is arranged on the gantry column, a pressing slider is arranged on the pressing slider guide rail, a pressing roller is connected to the bottom end of the pressing slider, a rack is arranged on the side elevation of the pressing slider, a gear drive motor support is arranged on the roller support, a gear drive motor is arranged on the gear drive motor support, a gear is arranged on the output shaft of the gear drive motor, and the gear and the rack are meshed together; an arc-shaped cold-bent corrugated plate is arranged between the pressing roller and the first active conveying roller; through the rotation of the gear drive motor, the pressing slider drives the pressing roller to contact the conveyed arc-shaped cold-bent corrugated plate, so as to realize the pressing of the arc-shaped cold-bent corrugated plate discharged obliquely and prevent it from sliding downward due to its own weight; a ratchet mechanism is arranged on the pressing roller to prevent the reverse rotation of the pressing roller.

[0014] The invention has a high degree of automation, which not only greatly improves the work efficiency and enables the arc-shaped plates to be mass-produced, but also, more importantly, greatly improves the safety factor in the unloading process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the unloading device of the present invention when receiving the arc-shaped cold-bent corrugated plate (2) after arc rolling;

[0016] Figure 2 It is a schematic diagram of the structure of the unloading device of the present invention when conveying the arc-shaped cold-bent corrugated plate 2;

[0017] Figure 3 It is a structural schematic diagram of the unloading device of the present invention;

[0018] Figure 4 It is a structural schematic diagram of the boat-shaped roller table support 4 of the present invention;

[0019] Figure 5 It is a schematic structural diagram of the boat-shaped roller stand 4 of the present invention in the main viewing direction;

[0020] Figure 6 It is a structural schematic diagram of the discharging receiving frame base 3 of the present invention;

[0021] Figure 7 It is a schematic structural diagram of the discharging receiving frame base 3 of the present invention when viewed from the right. DETAILED DESCRIPTION

[0022] The present invention is described in detail below in conjunction with the accompanying drawings:

[0023] An automatic unloading device for arc-shaped cold-bent corrugated plates is arranged at the discharge port of a three-roll arc rolling machine. The steel plates that have been cold-bent and formed with corrugations are fed into the three-roll arc rolling machine to be cold-bent into arc-shaped steel plates. The completed arc-shaped cold-bent corrugated plates 2 are obliquely conveyed out from the discharge port 1 of the three-roll arc rolling machine to the receiving rack on the right; on the right side of the discharge port 1 of the three-roll arc rolling machine, a discharge receiving rack base 3 is arranged, and on the right side of the discharge receiving rack base 3, a post-discharge arc-shaped cold-bent corrugated plate conveying line 5 is arranged. After the discharge, the arc-shaped cold-bent corrugated plates 2 obliquely arranged on the discharge receiving rack need to be converted into a horizontal state, and then they are conveyed to the post-discharge arc-shaped cold-bent corrugated plate conveying line 5 and conveyed away, thereby completing the discharge reception and conversion of the arc-shaped cold-bent corrugated plates 2 into water-resistant steel plates. It is placed horizontally and connected to the arc-shaped cold-bent corrugated plate conveyor line 5 after unloading for assembly line operation; on the left end top surface of the discharge receiving frame base 3, a pair of roller support hinge seat mounting columns 6 are fixedly arranged, and on each roller support hinge seat mounting column 6, a roller support hinge seat 7 is arranged, and the left end of the boat-shaped roller support 4 is hinged to a pair of roller support hinge seats 7 through two hinge connection mechanisms arranged on its lower bottom surface, so that the boat-shaped roller support 4 can rotate and swing around the two roller support hinge seats 7 on a pair of roller support hinge seat mounting columns 6, so that the boat-shaped roller support 4 is in an inclined state to meet the requirement of inclined discharging of the discharge port of the three-roller arc rolling machine. When the discharging is completed, the boat-shaped roller support 4 is rotated clockwise. The needle swings down to convert it into a horizontal state, so that it can be docked with the horizontally set post-unloading arc-shaped cold-bent corrugated plate conveyor line 5, and the arc-shaped cold-bent corrugated plate 2 after discharge is conveyed away in time to vacate the boat-shaped roller support 4 to receive the next piece of arc-shaped cold-bent corrugated plate 2 discharged; on the lower bottom surface of the right end of the boat-shaped roller support 4, the right side support column 15 of the roller support is hinged, and the conversion of the inclined and horizontal positions of the boat-shaped roller support 4 is completed by lifting and lying down the right side support column 15 of the roller support. On the top surface of the boat-shaped roller support 4, along the direction from left to right, the left end unpowered conveying roller 18, the first active conveying roller 19, the second active conveying roller 20, and the third active conveying roller are arranged at intervals. 21 and the right end unpowered conveying roller 22, in the discharge port 1 of the three-roller arc rolling machine, an arc-shaped cold-bent corrugated plate 2 that has been arc-rolled is arranged, and the arc-shaped cold-bent corrugated plate 2 passes through the left end unpowered conveying roller 18, the first active conveying roller 19, the second active conveying roller 20, the third active conveying roller 21 and the right end unpowered conveying roller 22 in sequence, and is discharged to the inclined boat-shaped roller support 4; a powered discharge roller is arranged in the discharge port 1 of the three-roller arc rolling machine, and the discharged arc-shaped cold-bent corrugated plate 2 passes through the left end unpowered conveying roller 18 and enters the powered first active conveying roller 19, and the arc-shaped cold-bent corrugated plate 2 is continuously discharged and conveyed until it is completely discharged from the discharge port 1 of the three-roller arc rolling machine, thereby realizing fast relay discharge.

[0024] On the discharging receiving frame base 3 on the right side of the roller support articulated seat mounting column 6, two parallel slide sliding support rails 9 are arranged, and on the two parallel slide sliding support rails 9, a slide 10 that can slide in the left and right directions is arranged, and on the top surface of the slide 10, a right side support column articulated seat 14 is arranged, and the lower end of the right side support column 15 of the roller support is hinged on the right side support column articulated seat 14; on the lower bottom surface of the slide 10, a lead screw nut 11 is arranged, and a lead screw 12 is connected in the lead screw nut 11, and a lead screw 12 is connected at the left end of the lead screw 12. A screw drive motor 13 is connected, and the screw drive motor 13 is fixedly installed on the base 3 of the discharge receiving frame; when the arc-shaped cold-bent corrugated plate 2 is discharged and tilted on the boat-shaped roller bracket 4, the slide plate 10 slides to the left by controlling the screw drive motor 13, and the slide plate 10 drives the lower end of the right side support column 15 of the roller bracket to move to the left, and the upper end of the right side support column 15 of the roller bracket rotates clockwise, and the right side support column 15 of the roller bracket is converted from an upright state to a horizontal state, so that the boat-shaped roller bracket 4 swings downward to a horizontal state.

[0025] A roller drive motor 23 is arranged on the boat-shaped roller support 4. The output shaft of the roller drive motor 23 is connected to the second active conveying roller 20 through a coupling. A driving double sprocket 24 is arranged on the output shaft of the roller drive motor 23. A first passive sprocket 25 is arranged on the first active conveying roller 19. A second passive sprocket 27 is arranged on the third active conveying roller 21. A first driving chain 26 is arranged between the driving double sprocket 24 and the first passive sprocket 25. A second driving chain 36 is arranged between the driving double sprocket 24 and the second passive sprocket 27. The roller drive motor 23 provides power for conveying the arc-shaped cold-bent corrugated plate 2 for the first active conveying roller 19, the second active conveying roller 20 and the third active conveying roller 21.

[0026] A gantry column 28 is arranged on the boat-shaped roller support 4 between the first active conveying roller 19 and the second active conveying roller 20, a downward pressing slider guide rail 29 is arranged on the gantry column 28, a downward pressing slider 30 is arranged on the downward pressing slider guide rail 29, a downward pressing roller 31 is connected to the bottom end of the downward pressing slider 30, a rack 32 is arranged on the side elevation of the downward pressing slider 30, a gear drive motor support is arranged on the boat-shaped roller support 4, and a gear drive motor support is arranged on the gear drive motor support. A wheel drive motor 34 is provided with a gear 33 on the output shaft of the gear drive motor 34, and the gear 33 is meshed with the rack 32; an arc-shaped cold-bent corrugated plate 2 is provided between the lower pressure roller 31 and the first active conveying roller 19; since the arc-shaped cold-bent corrugated plate 2 is discharged in an inclined state, in order to prevent the arc-shaped cold-bent corrugated plate 2 from sliding downward due to the effect of its own gravity during the discharge process, a lower pressure roller is specially designed to provide downward pressure for the top surface of the arc-shaped cold-bent corrugated plate 2 to ensure its safe discharge.

[0027] An automatic unloading method for a cold-bent corrugated plate after being cold-bent into an arc by a three-roller arc rolling machine, comprising a discharge port 1 of the three-roller arc rolling machine and an arc-shaped cold-bent corrugated plate 2, a discharge receiving frame base 3 is arranged on the right side of the discharge port 1 of the three-roller arc rolling machine, a conveying line 5 of the arc-shaped cold-bent corrugated plate after unloading is arranged on the right side of the discharge receiving frame base 3, a movable boat-shaped roller support 4 for receiving the discharge of the arc-shaped cold-bent corrugated plate 2 is arranged on the discharge receiving frame base 3, the boat-shaped roller support 4 is hinged on the discharge receiving frame base 3 in the form of a swing arm, and when the three-roller arc rolling machine is discharging, the boat-shaped roller support 4 is in a state of being lower on the left and higher on the right The boat-shaped roller support 4 is in an inclined state so that it cooperates with the discharging system of the three-roller arc rolling machine to complete the discharging task of receiving the arc-shaped cold-bent corrugated plate 2; when the discharging of the arc-shaped cold-bent corrugated plate 2 is completed, the boat-shaped roller support 4 is controlled to swing down to a horizontal state, so that it is connected with the arc-shaped cold-bent corrugated plate conveyor line 5 after unloading on the right side, and the arc-shaped cold-bent corrugated plate 2 after discharging is automatically conveyed away, and then the boat-shaped roller support 4 is controlled to return to the inclined state to receive the second boat-shaped roller support 4 completed by the three-roller arc rolling machine, and this cycle is repeated to realize the fast-beat automatic unloading of the batch-produced arc-shaped cold-bent corrugated plates 2.

[0028] The specific working process of the automatic unloading device for arc-shaped cold-bent corrugated plates of the present invention is as follows:

[0029] 1. The automatic unloading device for arc-shaped cold-bent corrugated plates is placed side by side with the three-roller arc rolling machine. After the corrugated steel plate passes through the three-roller arc rolling machine, the plate surface is arc-shaped. Driven by the discharge rollers in the discharge port of the three-roller arc rolling machine, the formed arc-shaped plate surface enters the boat-shaped roller stand 4 along the conveying roller on the boat-shaped roller stand 4;

[0030] 2. After all the curved cold-bent corrugated sheets are pressed into an arc shape and leave the discharge port of the three-roller arc rolling machine, two sets of lower pressing roller mechanisms are arranged on the boat-shaped roller support 4 to press the curved sheet from the upper surface of the curved cold-bent corrugated sheet 2, so that the curved cold-bent corrugated sheet 2 is unidirectionally and stably transferred to the boat-shaped roller support 4; a ratchet mechanism 35 is arranged on the lower pressing roller so that the lower pressing roller can only rotate in one direction, so that the curved cold-bent corrugated sheet 2 can slide up and down on the inclined boat-shaped roller support 4 and brake;

[0031] 3. A conveying power device of a conveying roller is arranged on the boat-shaped roller support 4. The roller drive motor 23 drives the conveying roller to rotate through a chain transmission system, so that the arc-shaped cold-bent corrugated plate 2 can smoothly enter the boat-shaped roller support 4;

[0032] Fourth, after all the curved cold-bent corrugated plates 2 are put on the boat-shaped roller support 4, the lead screw drive motor 13 drives the slide plate 10 to move left, and the boat-shaped roller support 4 is swung downward to a horizontal state through the right support columns 15 of the two roller supports, so as to achieve the docking of the boat-shaped roller support 4 with the conveyor line 5 of the curved cold-bent corrugated plates after unloading, and the curved cold-bent corrugated plates 2 after unloading are moved away;

[0033] 5. The lead screw drive motor 13 drives the slide plate 10 to move right, and the boat-shaped roller support 4 is swung upward from a horizontal state to an inclined state through the right side support columns 15 of the two roller support, so that the boat-shaped roller support 4 returns to the material receiving state, and the unloading operation of the next arc-shaped cold-bent corrugated plate 2 is carried out; this cycle is repeated to realize the automatic flow unloading of the arc-shaped cold-bent corrugated plates 2 produced in batches.

Claims

1. An automatic unloading method for cold-bent corrugated plates after being cold-bent by a three-roller arc rolling machine, comprising a discharge port (1) of the three-roller arc rolling machine and an arc-shaped cold-bent corrugated plate (2), a discharge receiving frame base (3) being arranged on the right side of the discharge port (1) of the three-roller arc rolling machine, and a conveying line (5) for the arc-shaped cold-bent corrugated plates after unloading being arranged on the right side of the discharge receiving frame base (3), characterized in that: On the discharging receiving frame base (3), there is provided a movable boat-shaped roller support (4) for receiving the discharging of the arc-shaped cold-bent corrugated plate (2). The boat-shaped roller support (4) is hinged to the discharging receiving frame base (3) in the form of a swing arm. When the three-roller arc rolling machine is discharging, the boat-shaped roller support (4) is in an inclined state with the left side lower and the right side higher, so that it cooperates with the discharging system of the three-roller arc rolling machine to complete the task of receiving the discharging of the arc-shaped cold-bent corrugated plate (2); when the discharging of the arc-shaped cold-bent corrugated plate (2) is completed, the boat-shaped roller support (4) is controlled to swing down to a horizontal state, so that it is connected with the arc-shaped cold-bent corrugated plate conveying line (5) after unloading on the right side, and the arc-shaped cold-bent corrugated plate (2) after discharging is automatically conveyed away, and then, The boat-shaped roller support (4) is then controlled to return to the tilted state to receive the second boat-shaped roller support (4) rolled by the three-roller arc rolling machine. This cycle is repeated to achieve the automatic unloading of the arc-shaped cold-bent corrugated plates (2) produced in batches at a fast pace. The boat-shaped roller support (4) is arranged in the following manner: a roller support hinge seat mounting column (6) is arranged on the left top surface of the discharge receiving frame base (3), a roller support hinge seat (7) is arranged on the roller support hinge seat mounting column (6), a roller support left end pin shaft seat (16) and a roller support right end pin shaft seat (17) are respectively arranged on the lower bottom surface of the left end of the boat-shaped roller support (4), and the roller support left end pin shaft seat (16) and the roller support right end pin shaft seat (17) are arranged on the roller support left end pin shaft seat (16) and the roller support right end pin shaft seat (17) are arranged on the lower bottom surface of the left end of the boat-shaped roller support (4). The roller support hinge pin (8) is connected between the roller support hinge seats (7); the roller support right side support column (15) is hinged on the roller support right side pin seat (17); on the top surface of the boat-shaped roller support (4), a left end non-powered conveying roller (18), a first active conveying roller (19), a second active conveying roller (20), a third active conveying roller (21) and a right end non-powered conveying roller (22) are arranged at intervals from left to right. The arc-shaped cold-bent corrugated sheet (2) rolled in the discharge port (1) of the three-roller arc rolling machine passes through the left end non-powered conveying roller (18), the first active conveying roller (19), the second active conveying roller (20), the third active conveying roller (21) in sequence. ) and a right-end unpowered conveying roller (22), discharge the material to an inclined boat-shaped roller stand (4); the inclined boat-shaped roller stand (4) swings down from an inclined state with the left side lower and the right side higher to a horizontal state, which is achieved by the following method: two parallel slide plate sliding support rails (9) are arranged on the discharging receiving frame base (3) on the right side of the roller stand hinge seat mounting column (6), a slide plate (10) that can slide in the left and right directions is arranged on the two parallel slide plate sliding support rails (9), a right-side supporting column hinge seat (14) is arranged on the top surface of the slide plate (10), and the lower end of the right-side supporting column (15) of the roller stand is hinged to the right-side supporting column hinge seat (14);A lead screw nut (11) is provided on the bottom surface of the slide plate (10), a lead screw (12) is connected in the lead screw nut (11), the left end of the lead screw (12) is connected to a lead screw drive motor (13), and the lead screw drive motor (13) is fixed on the base (3) of the discharge receiving frame; the slide plate (10) slides to the left through the rotation of the lead screw drive motor (13), the right side support column (15) of the roller support is transformed from a vertical upright state to a horizontal lying state, so that the boat-shaped roller support (4) swings downward to a horizontal state; a gantry column (28) is provided on the roller support (4) between the first active conveying roller (19) and the second active conveying roller (20), a downward pressing slider guide rail (29) is provided on the gantry column (28), a downward pressing slider (30) is provided on the downward pressing slider guide rail (29), and a downward pressing slider (30) is connected to the bottom end of the downward pressing slider (30). Roller (31), rack (32) is arranged on the side elevation of the pressing slider (30), a gear drive motor bracket is arranged on the roller support (4), a gear drive motor (34) is arranged on the gear drive motor bracket, a gear (33) is arranged on the output shaft of the gear drive motor (34), and the gear (33) and the rack (32) are meshed together; an arc-shaped cold-bent corrugated plate (2) is arranged between the pressing roller (31) and the first active conveying roller (19); through the rotation of the gear drive motor (34), the pressing slider (30) drives the pressing roller (31) to contact the conveyed arc-shaped cold-bent corrugated plate (2), so as to press the arc-shaped cold-bent corrugated plate (2) that is discharged obliquely, and prevent it from sliding downward due to its own weight; a ratchet mechanism (35) is arranged on the pressing roller (31) to prevent the pressing roller (31) from rotating in the opposite direction. ;

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