CN109226369B - Steel plate rolling pre-bending auxiliary device and steel plate rolling pre-bending processing method - Google Patents
Steel plate rolling pre-bending auxiliary device and steel plate rolling pre-bending processing method Download PDFInfo
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- CN109226369B CN109226369B CN201811327590.3A CN201811327590A CN109226369B CN 109226369 B CN109226369 B CN 109226369B CN 201811327590 A CN201811327590 A CN 201811327590A CN 109226369 B CN109226369 B CN 109226369B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 344
- 239000010959 steel Substances 0.000 title claims abstract description 344
- 238000005452 bending Methods 0.000 title claims abstract description 190
- 238000005096 rolling process Methods 0.000 title claims abstract description 113
- 238000003672 processing method Methods 0.000 title claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 60
- 238000009434 installation Methods 0.000 claims description 29
- 230000006835 compression Effects 0.000 claims description 24
- 238000007906 compression Methods 0.000 claims description 24
- 230000005540 biological transmission Effects 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 16
- 238000013459 approach Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 abstract description 19
- 238000010276 construction Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 238000003825 pressing Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
- B21D43/08—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers
- B21D43/09—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers by one or more pairs of rollers for feeding sheet or strip material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention discloses a steel plate rolling pre-bending auxiliary device, which comprises a frame, a roller type conveying platform, an auxiliary supporting mechanism and a guiding mechanism, and also discloses a steel plate rolling pre-bending processing method, wherein the processing method comprises the following steps: 1. supporting the steel plate rolling pre-bending auxiliary devices on the front side and the rear side of the press machine along the conveying direction of the steel plate; 2. respectively adjusting the heights of the horizontal support plates of the two steel plate rolling pre-bending auxiliary devices and the mounting positions of the guide wheel mounting frames of the two steel plate rolling pre-bending auxiliary devices in the width direction of the frame; 3. hoisting the steel plate; 4. conveying the steel plate, and pre-bending one side of the steel plate; 5. continuously conveying the steel plate, and pre-bending the other side of the steel plate; 6. and withdrawing and hanging away the steel plate. The roller type conveying platform can realize stable steel plate conveying, improves the processing efficiency of steel plate rolling pre-bending processing, and ensures the processing precision of steel plate rolling pre-bending processing.
Description
Technical Field
The invention belongs to the technical field of manufacturing of pressure steel pipes, and particularly relates to a steel plate rolling pre-bending auxiliary device and a steel plate rolling pre-bending processing method.
Background
When the existing large-diameter pressure steel pipe of the power station is manufactured, in order to ensure the roundness of rolling, pre-bending pressing operation is needed before rolling, namely, a press machine is used for pressing a special bending die to press two ends of the steel pipe in advance, however, in the actual pressing process, the steel plate is heavy in weight and large in size, the large-size movable door machine is generally required to be used for assisting in construction by hoisting a steel wire rope of the large-size movable door machine, in the pressing process, the bending die is large in resilience force and large in impact, certain damage is caused to the large-size movable door machine and the steel wire rope, potential safety hazards exist, the large-size movable door machine is always occupied in pressing, the occupation rate of large-size equipment is large, the construction of other working surfaces is influenced, the construction cost is increased, and the efficiency is reduced. Therefore, the method is more economical and practical, saves time and labor, reduces construction safety risks to the greatest extent, reduces occupied time of large hoisting equipment to the greatest extent, improves construction efficiency, and is a practical problem to be solved urgently in the industry.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the steel plate rolling pre-bending auxiliary device which is simple in structure and reasonable in design, stable steel plate transmission can be realized through the roller type conveying platform, a large-sized mobile door machine is not required to be occupied, construction cost is saved, the operation mode is simple, the processing efficiency of steel plate rolling pre-bending processing is improved, and the processing precision of steel plate rolling pre-bending processing is ensured.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a steel sheet system preflex auxiliary device which characterized in that: including frame, horizontal installation are in roller formula conveying platform, the vertical installation in the frame auxiliary stay mechanism and the setting in roller formula conveying platform both sides are used for prescribing a limit to steel sheet moving direction's guiding mechanism, roller formula conveying platform is including installing power roller and the unpowered roller on frame top, the axis of power roller with the axis of unpowered roller all is perpendicular with the direction that the steel sheet got into the press in horizontal plane, the frame includes two first frames and the second frame that the structure is the same and lay on same straight line, installs power roller and unpowered roller in the first frame, install two at least unpowered rollers in the second frame, power roller is driven by the motor, auxiliary stay mechanism includes horizontal support board, sets up the below is used for the jacking the hydro-cylinder on horizontal support board and install the spring supporting assembly on the piston rod top of hydro-cylinder, guiding mechanism includes two along the guide wheel mounting bracket, the vertical installation of length direction central line symmetry of roller conveying platform are in the guide wheel mounting bracket is in the guide wheel and the guide wheel is in the top of installing the guide plate.
Forebending auxiliary device is rolled up to forebending to foreplate, its characterized in that: the motor is in transmission connection with the power roller through a chain transmission assembly, and the chain transmission assembly comprises a driving sprocket fixedly arranged on an output shaft of the motor, a driven sprocket arranged at one end of the power roller and a chain used for connecting the driving sprocket and the driven sprocket.
Forebending auxiliary device is rolled up to forebending to foreplate, its characterized in that: the number of the auxiliary supporting mechanisms is two, the two auxiliary supporting mechanisms are respectively a first auxiliary supporting mechanism installed on the first rack and a second auxiliary supporting mechanism installed on the second rack, the first auxiliary supporting mechanism comprises a first horizontal supporting plate, a first oil cylinder arranged below the first horizontal supporting plate and used for jacking the first horizontal supporting plate and a first spring supporting component installed at the top end of a first oil cylinder piston rod of the first oil cylinder, the second auxiliary supporting mechanism comprises a second horizontal supporting plate, a second oil cylinder arranged below the second horizontal supporting plate and used for jacking the second horizontal supporting plate and a second spring supporting component installed at the top end of a second oil cylinder piston rod of the second oil cylinder, the first oil cylinder body of the first oil cylinder is fixedly installed on the first rack, and the second oil cylinder body of the second oil cylinder is fixedly installed on the second rack.
Forebending auxiliary device is rolled up to forebending to foreplate, its characterized in that: the number of the guide mechanisms is two, the two guide mechanisms are respectively a first guide mechanism installed on a first frame and a second guide mechanism installed on a second frame, the first guide mechanism comprises a first guide wheel installation frame symmetrically arranged along the central line of the length direction of the roller type conveying platform, a first guide wheel installed on the first guide wheel installation frame and a first guide plate installed at the top end of the first guide wheel installation frame, and the second guide mechanism comprises a second guide wheel installation frame symmetrically arranged along the central line of the length direction of the roller type conveying platform, a second guide wheel installed on the second guide wheel installation frame and a second guide plate installed at the top end of the second guide wheel installation frame, and the height of the second guide plate is higher than that of the first guide plate.
Forebending auxiliary device is rolled up to forebending to foreplate, its characterized in that: the first spring support assembly comprises a first compression spring positioning shaft fixedly arranged at the top end of a piston rod of the first oil cylinder, a first compression spring sleeved on the first compression spring positioning shaft and a first fixing sleeve sleeved on the outer side of the first compression spring, and the top end of the first fixing sleeve is fixedly arranged on the bottom surface of the first horizontal support plate; the second spring support assembly comprises a second compression spring positioning shaft fixedly arranged at the top end of a piston rod of the second oil cylinder, a second compression spring sleeved on the second compression spring positioning shaft and a second fixing sleeve sleeved on the outer side of the second compression spring, and the top end of the second fixing sleeve is fixedly arranged on the bottom surface of the second horizontal support plate.
Forebending auxiliary device is rolled up to forebending to foreplate, its characterized in that: the upper surface of first horizontal support plate is provided with first rubber pad, the upper surface of second horizontal support plate is provided with the second rubber pad.
The invention also provides a steel plate rolling pre-bending processing method, which is characterized in that: the processing method comprises the following steps:
step one, supporting the steel plate rolling pre-bending auxiliary device on the front side and the rear side of the press machine along the conveying direction of the steel plate:
the steel plate rolling pre-bending auxiliary devices are respectively supported on the front side and the rear side of the press along the conveying direction of the steel plate, the two steel plate rolling pre-bending auxiliary devices are symmetrically distributed along the vertical center line of the press, and the upper surfaces of the roller type conveying platforms of the two steel plate rolling pre-bending auxiliary devices are flush with the top surface of the female die of the bending die arranged on the press;
step two, respectively adjusting the height of the horizontal support plate of the two steel plate rolling pre-bending auxiliary devices and the installation position of the guide wheel installation frame of the two steel plate rolling pre-bending auxiliary devices in the width direction of the frame:
firstly, respectively adjusting the heights of the horizontal support plates of the two steel plate rolling pre-bending auxiliary devices to enable the heights of the horizontal support plates of the two steel plate rolling pre-bending auxiliary devices to be lower than the upper surface of the roller type conveying platform; then, according to the width of the steel plate and the width of the female die of the bending die, respectively adjusting the mounting positions of the guide wheel mounting frames of the two steel plate rolling pre-bending auxiliary devices in the width direction of the frame to enable the gap between the guide wheels of the two steel plate rolling pre-bending auxiliary devices and the edges of the steel plate in the width direction to be 3 mm-5 mm;
Hoisting the steel plate:
hoisting a steel plate to the roller type conveying platform of the steel plate rolling pre-bending auxiliary device positioned at the rear side of the press by adopting a lifting appliance;
step four, conveying the steel plate, and pre-bending one side of the steel plate:
step 401, starting a motor of the steel plate rolling pre-bending auxiliary device positioned at the rear side of the press machine, driving the steel plate to move forwards, enabling the steel plate to gradually approach the bending die arranged on the press machine, and closing the motor of the steel plate rolling pre-bending auxiliary device positioned at the rear side of the press machine when one side of the steel plate is positioned right above a female die of the bending die, and stopping conveying the steel plate;
step 402, driving a male die of the bending die to move downwards by a press until the female die and the male die are closed, and pre-bending one side of the steel plate;
step 403, driving a male die of the bending die to move upwards by a press machine, opening the female die and the male die, and enabling the steel plate to fall onto the roller type conveying platform of the steel plate rolling pre-bending auxiliary device positioned at the rear side of the press machine;
continuously conveying the steel plate, and pre-bending the other side of the steel plate:
Step 501, restarting a motor of the steel plate rolling pre-bending auxiliary device positioned at the rear side of the press machine, driving the steel plate to continuously move forwards, enabling the steel plate to gradually pass through the bending die, closing the motor of the steel plate rolling pre-bending auxiliary device positioned at the rear side of the press machine when one side of the steel plate is positioned right above a power roller of the steel plate rolling pre-bending auxiliary device positioned at the front side of the press machine, starting the motor of the steel plate rolling pre-bending auxiliary device positioned at the front side of the press machine, continuously transmitting the steel plate, and closing the motor of the steel plate rolling pre-bending auxiliary device positioned at the front side of the press machine when the other side of the steel plate is positioned right above a concave die of the bending die, and stopping transmitting the steel plate;
step 502, driving a male die of the bending die to move downwards by a press until the female die and the male die are closed, and pre-bending the other side of the steel plate;
step 503, driving a male die of the bending die to move upwards by a press machine, so that the female die and the male die are opened, and the steel plate falls onto the roller type conveying platform of the steel plate rolling pre-bending auxiliary device positioned at the front side of the press machine;
Step six, exiting and hanging away the steel plate:
restarting a motor of the steel plate rolling pre-bending auxiliary device positioned at the front side of the press machine, driving the steel plate to continuously move forwards, enabling the steel plate to gradually get away from the bending die, closing the motor of the steel plate rolling pre-bending auxiliary device positioned at the front side of the press machine after the steel plate is completely separated from the bending die, and adjusting the steel plate away from the roller type conveying platform of the steel plate rolling pre-bending auxiliary device positioned at the front side of the press machine by adopting a lifting appliance.
Compared with the prior art, the invention has the following advantages:
1. compared with the prior art that steel wires are used for hoisting the steel plates and then a large-scale moving gantry crane is used for driving the steel plates to be in a straight line, the steel plate rolling pre-bending auxiliary device has the advantages of being small in size, convenient to carry, simple to operate and high in transmission precision, and in actual use, the roller type conveying platform can be used for stably conveying the steel plates, does not occupy the large-scale moving gantry crane, saves construction cost and improves construction efficiency.
2. According to the invention, the roller type conveying platform is arranged at the top end of the frame, and comprises the power roller and the unpowered roller which are arranged at the top end of the frame, at the moment, the power roller and the unpowered roller jointly form a horizontal plane, and because the axis of the power roller and the axis of the unpowered roller in the horizontal plane are vertical to the direction of the steel plate entering the press machine, when the steel plate is horizontally placed on the power roller and the unpowered roller and is driven to rotate by a motor, the power roller can drive the steel plate to horizontally move in the horizontal plane along the direction of the steel plate entering the press machine, and meanwhile, the unpowered roller not only plays a role of supporting the steel plate, but also plays a role of pushing the steel plate to horizontally move, so that the use effect is good.
3. According to the invention, the auxiliary supporting mechanism is vertically arranged on the frame and comprises the horizontal supporting plate, the oil cylinder and the spring supporting component, when the steel plate is horizontally arranged on the roller type conveying platform, the preset jacking force of the oil cylinder is smaller than the dead weight of the steel plate due to the large volume and heavy weight of the steel plate, so that when the oil cylinder is in a jacking state, the steel plate still does not generate any displacement change in the vertical direction; when the steel plate enters the press and one side of the steel plate is pre-bent through the bending die, the other side of the steel plate can tilt upwards, namely the acting force of the steel plate on the piston rod of the oil cylinder disappears, at the moment, the piston rod of the oil cylinder can continuously lift up, so that the horizontal support plate continuously abuts against the bottom surface of the steel plate, namely when the bending die closes one side of the pre-bent steel plate, the other side of the steel plate is always in a supported state, the resilience force of the other side of the steel plate is effectively reduced, the stability of the steel plate in the transmission process is improved, and the pre-bending precision of the steel plate is ensured.
4. According to the invention, the guide mechanisms for limiting the moving direction of the steel plate are arranged on two sides of the roller type conveying platform, each guide mechanism comprises two guide wheel mounting frames symmetrically arranged along the central line of the length direction of the roller type conveying platform, guide wheels vertically arranged on the guide wheel mounting frames and guide plates arranged at the top ends of the guide wheel mounting frames, and when the roller type conveying platform is in actual use, a moving channel for the steel plate to pass through is formed between the two guide wheels, so that the moving direction of the steel plate can be limited, the phenomenon that the steel plate is deviated in the moving process can be prevented, the accuracy of entering the bending die by the steel plate is ensured, and the phenomenon that the steel plate collides with the die and causes die damage is avoided.
5. The steel plate rolling pre-bending processing method is simple in operation mode, improves the processing efficiency of the steel plate rolling pre-bending processing, and ensures the processing precision of the steel plate rolling pre-bending processing.
In conclusion, the roller type conveying platform disclosed by the invention has the advantages that the structure is simple, the design is reasonable, the stable conveying of the steel plate can be realized through the roller type conveying platform, the large-scale movable door machine is not required to be occupied, the construction cost is saved, the operation mode is simple, the processing efficiency of the steel plate rolling pre-bending processing is improved, and the processing precision of the steel plate rolling pre-bending processing is ensured.
The invention is described in further detail below with reference to the drawings and examples.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a right side view of fig. 1.
FIG. 4 is a schematic diagram of the connection relationship between the second frame, the second auxiliary supporting mechanism, the second guiding mechanism and the unpowered roller.
Fig. 5 is a flowchart of a method for rolling and pre-bending a steel plate according to the present invention.
Fig. 6 is a schematic view showing a use state of one side of a preflex steel sheet in the steel sheet rolling preflex processing method of the present invention.
Fig. 7 is a schematic view showing a use state of the other side of the pre-bent steel sheet in the steel sheet rolling pre-bending processing method of the present invention.
Reference numerals illustrate:
Detailed Description
The utility model provides a steel sheet roll-up pre-bending auxiliary device as shown in fig. 1, fig. 2, fig. 3 and fig. 4, is in including frame, level install roller formula conveying platform on frame top, vertical installation are in auxiliary support mechanism in the frame and set up roller formula conveying platform both sides are used for prescribing a limit to steel sheet 14 direction of movement guiding mechanism, roller formula conveying platform is including installing power roller 3 and unpowered roller 4 on frame top, the axis of power roller 3 with the axis of unpowered roller 4 is in the horizontal plane all perpendicular with the direction that steel sheet 14 got into press 15, the frame includes two structures the same and lay first frame 1 and second frame 2 on same straight line, install power roller 3 and unpowered roller 4 on the first frame 1, install two at least unpowered roller 4 on the second frame 2, power roller 3 is driven by motor 5, auxiliary support mechanism includes the horizontal support plate, sets up be used for the jack-up horizontal support plate's hydro-cylinder and install the spring support assembly on the top of hydro-cylinder, the guide wheel is including two guide wheel and the mounting bracket are in the vertical length of guide wheel mounting bracket along two guide wheel mounting bracket vertical guide wheel mounting bracket length on the vertical guide wheel.
When in actual use, the steel plate rolling pre-bending auxiliary device is supported on the front side or the rear side of the press 15 along the transmission direction of the steel plate, and the steel plate 14 can be stably transmitted between bending dies on the press 15 by adopting the steel plate rolling pre-bending auxiliary device.
In this embodiment, through installing roller formula conveying platform on the frame top, just roller formula conveying platform is including installing power roller 3 and unpowered roller 4 on the frame top, at this moment, power roller 3 and unpowered roller 4 constitute a horizontal plane jointly, again because in the horizontal plane the axis of power roller 3 with the axis of unpowered roller 4 all is perpendicular with the direction that steel sheet 14 got into press 15, consequently, when placing steel sheet 14 on power roller 3 and unpowered roller 4 horizontally, when the rotation of power roller 3 is driven by motor 5, power roller 3 can drive steel sheet 14 in the horizontal plane along the direction horizontal migration that gets into press 15, simultaneously, unpowered roller 4 has not only played the effect of supporting steel sheet 14, has played the effect of promoting steel sheet 14 horizontal migration simultaneously, excellent in use effect.
In this embodiment, by vertically installing an auxiliary supporting mechanism on the frame, the auxiliary supporting mechanism includes a horizontal supporting plate, an oil cylinder disposed below the horizontal supporting plate for lifting the horizontal supporting plate, and a spring supporting assembly installed at the top end of a piston rod of the oil cylinder, when the steel plate 14 is horizontally placed on the roller type conveying platform in actual use, because the volume and weight of the steel plate 14 are large, the preset lifting force of the oil cylinder is smaller than the dead weight of the steel plate 14, when the oil cylinder is in a lifting state, the steel plate 14 still does not undergo any displacement change in the vertical direction; when the steel plate 14 enters the press 15 and one side of the steel plate 14 is pre-bent by the bending die, the other side of the steel plate 14 can tilt upwards, namely the acting force of the steel plate 14 on the piston rod of the oil cylinder disappears, at the moment, the piston rod of the oil cylinder can continuously lift up, so that the horizontal support plate continuously abuts against the bottom surface of the steel plate 14, namely when the bending die closes one side of the pre-bent steel plate 14, the other side of the steel plate 14 is always in a supported state, the rebound force of the other side of the steel plate 14 is effectively reduced, the stability of the steel plate 14 in the transmission process is improved, and the pre-bending precision of the steel plate 14 is ensured.
In this embodiment, the spring support assembly is installed on the top end of the piston rod of the oil cylinder, and the spring support assembly is adopted to also play a role in elastically supporting the steel plate 14, so that the spring support assembly is used in combination with the oil cylinder, and the rigid impact of the horizontal support plate on the bottom surface of the steel plate 14 is reduced, so that the use effect is good.
In this embodiment, through set up the guiding mechanism that is used for inject steel sheet 14 direction of movement in roller conveying platform both sides, guiding mechanism includes two edges along roller conveying platform's length direction central line symmetry lays the leading wheel mounting bracket, vertically install leading wheel on the leading wheel mounting bracket and install the deflector on leading wheel mounting bracket top, during the in-service use, two form one between the leading wheel and supply the removal passageway that steel sheet 14 passed, can inject the direction of movement of steel sheet 14, can prevent that steel sheet 14 from taking place the phenomenon of off tracking at the in-process that removes, guaranteed the accuracy that steel sheet 14 got into the mould of bending, can not take place the phenomenon of collision mould and causing the mould damage.
In this embodiment, the frame is formed by combining two relatively independent first frames 1 and second frames 2, which has the advantages of small volume, light weight and convenient carrying, and in the actual use process, the spacing between the first frames 1 and the second frames 2 during laying can be determined according to the length of the steel plate 14 required to be rolled and pre-bent, and even a plurality of second frames 2 can be independently selected to be combined with the first frames 1, so as to meet the processing requirement of rolling and pre-bending of the steel plate 14 with ultra-long length.
In this embodiment, the quantity of power roller 3 is one, power roller 3 installs on first frame 1, the quantity of unpowered roller 4 is three, one of them unpowered roller 4 installs on first frame 1, and two other unpowered rollers 4 install on second frame 2, during the in-service use, the quantity of power roller 3 and unpowered roller 4 also can select and equidistant the laying according to actual need, and is nimble ingenious, application scope is wide.
In this embodiment, the first rack 1 and the second rack 2 are rectangular racks, and the top ends of the first rack 1 and the second rack 2 are provided with a support for installing the power roller 3 or the unpowered roller 4.
In this embodiment, the motor 5 is in transmission connection with the power roller 3 through a chain transmission assembly, and the chain transmission assembly includes a driving sprocket 6-1 fixedly installed on an output shaft of the motor 5, a driven sprocket 6-2 installed at one end of the power roller 3, and a chain 6-3 for connecting the driving sprocket 6-1 and the driven sprocket 6-2.
In this embodiment, the number of the auxiliary supporting mechanisms is two, the two auxiliary supporting mechanisms are respectively a first auxiliary supporting mechanism installed on the first frame 1 and a second auxiliary supporting mechanism installed on the second frame 2, the first auxiliary supporting mechanism comprises a first horizontal supporting plate 7-1, a first oil cylinder arranged below the first horizontal supporting plate 7-1 and used for jacking the first horizontal supporting plate 7-1, and a first spring supporting component installed at the top end of a first oil cylinder piston rod 8-1-1 of the first oil cylinder, the second auxiliary supporting mechanism comprises a second horizontal supporting plate 7-2, a second oil cylinder arranged below the second horizontal supporting plate 7-2 and used for jacking the second horizontal supporting plate 7-2, and a second spring supporting component installed at the top end of a second oil cylinder piston rod 8-2-1 of the second oil cylinder, the first oil cylinder body 8-1-2 of the first oil cylinder is fixedly installed on the first frame 1, and the second oil cylinder 8-2 of the second oil cylinder is fixedly installed on the second frame 2.
In this embodiment, the number of the first cylinders and the second cylinders are two, and the two first cylinders are symmetrically arranged along the central line of the first horizontal support plate 7-1 in the length direction; the two second cylinders are symmetrically arranged along the central line of the length direction of the second horizontal support plate 7-2, when the steel plate 14 is horizontally placed on the roller type conveying platform, the two first cylinders and the two second cylinders are in a lifting state, but in order to ensure that the steel plate 14 is in a state of not being lifted, the lifting force of the two first cylinders and the two second cylinders acting on the steel plate 14 together should be smaller than the dead weight of the steel plate 14.
In this embodiment, the number of the guide mechanisms is two, twoThe guide mechanisms are respectively a first guide mechanism installed on the first frame 1 and a second guide mechanism installed on the second frame 2, the first guide mechanism comprises two first guide wheel installation frames 11-1 symmetrically arranged along the longitudinal center line of the roller type conveying platform, first guide wheels 12-1 installed on the first guide wheel installation frames 11-1 and first guide plates 13-1 installed at the top ends of the first guide wheel installation frames 11-1, the second guide mechanism comprises two second guide wheel installation frames 11-2 symmetrically arranged along the longitudinal center line of the roller type conveying platform, second guide wheels 12-2 installed on the second guide wheel installation frames 11-2 and second guide plates 13-2 installed at the top ends of the second guide wheel installation frames 11-2, and the second guide plates 13-2 are high Height above the first guide plate 13-1 +.>。
In this embodiment, the height of the second guide plate 13-2Height above the first guide plate 13-1 +.>The purpose of (1) is that: when one side of the steel plate 14 enters the press 15 and is pre-bent to one side of the steel plate 14 by the bending die, the other side of the steel plate 14 can be tilted upwards, the second guide plate 13-2 can still play a guiding role on the other side of the steel plate 14 in the process of tilting upwards, the other side of the steel plate 14 can be prevented from deflecting in the process of tilting upwards, and when the other side of the steel plate 14 moves downwards, the other side of the steel plate 14 can vertically move downwards under the guiding role of the second guide plate 13-2 and accurately enter a moving channel formed between the two first guide wheels 12-1 or between the two second guide wheels 12-2.
In this embodiment, the first guide wheel mounting frame 11-1 is fixedly mounted on the top end of the first frame 1 through a first bolt, a first waist-shaped groove for mounting the first bolt is formed in the top end of the first frame 1 along the width direction of the first frame 1, and the mounting position of the first guide wheel mounting frame 11-1 in the width direction of the first frame 1 can be adjusted by adjusting the mounting position of the first bolt in the length direction of the first waist-shaped groove, so that the center distance between the two first guide wheels 12-1 is changed.
In this embodiment, the second guide wheel mounting frame 11-2 is fixedly mounted on the top end of the second frame 2 through a second bolt, a second waist-shaped groove for mounting the second bolt is formed in the top end of the second frame 2 along the width direction of the second frame 2, and the mounting position of the second guide wheel mounting frame 11-2 in the width direction of the second frame 2 can be adjusted by adjusting the mounting position of the second bolt in the length direction of the second waist-shaped groove, so that the center distance between the two second guide wheels 12-2 is changed, and in the adjustment process, the center distance between the two second guide wheels 12-2 is equal to the center distance between the two first guide wheels 12-1, so that the transmission of steel plates 14 with different width sizes can be satisfied.
In this embodiment, the first spring support assembly includes a first compression spring positioning shaft 9-1-1 fixedly installed at the top end of a first cylinder piston rod 8-1-1, a first compression spring 9-1-2 sleeved on the first compression spring positioning shaft 9-1-1, and a first fixing sleeve 9-1-3 sleeved outside the first compression spring 9-1-2, where the top end of the first fixing sleeve 9-1-3 is fixedly installed on the bottom surface of the first horizontal support plate 7-1; the second spring support assembly comprises a second compression spring positioning shaft 9-2-1 fixedly arranged at the top end of a second oil cylinder piston rod 8-2-1, a second compression spring 9-2-2 sleeved on the second compression spring positioning shaft 9-2-1 and a second fixing sleeve 9-2-3 sleeved on the outer side of the second compression spring 9-2, and the top end of the second fixing sleeve 9-2-3 is fixedly arranged on the bottom surface of the second horizontal support plate 7-2.
In this embodiment, the first rubber pad 10-1 is disposed on the upper surface of the first horizontal support plate 7-1, and the second rubber pad 10-2 is disposed on the upper surface of the second horizontal support plate 7-2.
In this embodiment, by providing the first rubber pad 10-1 on the upper surface of the first horizontal support plate 7-1, the rigid collision between the first horizontal support plate 7-1 and the steel plate 14 can be reduced, and by providing the second rubber pad 10-2 on the upper surface of the second horizontal support plate 7-2, the rigid collision between the second horizontal support plate 7-2 and the steel plate 14 can be reduced, and at the same time, the vibration and the construction noise can be reduced.
A method of pre-bending a rolled steel sheet as shown in fig. 5, 6 and 7, the method comprising the steps of:
step one, supporting the steel plate rolling pre-bending auxiliary device on the front side and the rear side of the press machine along the conveying direction of the steel plate:
the steel plate rolling pre-bending auxiliary devices are supported on the front side and the rear side of the press 15 along the conveying direction of the steel plate, the two steel plate rolling pre-bending auxiliary devices are symmetrically distributed along the vertical center line of the press 15, and the upper surfaces of the roller type conveying platforms of the two steel plate rolling pre-bending auxiliary devices are all level with the top surface of the concave die 16-1 of the bending die arranged on the press 15;
In the process of manufacturing the penstock, the shape of the steel plate 14 is mostly elongated, and both sides of the steel plate 14 need to be rolled and pre-bent, so that the steel plate rolling and pre-bending auxiliary devices are required to be supported on both front and rear sides of the press 15 along the conveying direction of the steel plate, and the two steel plate rolling and pre-bending auxiliary devices are matched for use, so that rolling and pre-bending of both sides of the steel plate 14 can be realized under the condition of one-time hoisting.
In actual use, since both sides of the elongated steel plate 14 in the length direction of the elongated steel plate 14 are deformed by bending downwards in the process of conveying, both sides of the elongated steel plate 14 in the length direction are lower than the top surface of the female die 16-1 of the bending die, when one side of the elongated steel plate 14 approaches the female die 16-1 of the bending die, an auxiliary tool is needed to lift one side of the elongated steel plate 14 upwards to a height flush with the top surface of the female die 16-1 of the bending die by manpower, so that one side of the elongated steel plate 14 is stably placed on the top surface of the female die 16-1 of the bending die and cannot collide with the female die 16-1 of the bending die;
The height difference between the upper surface of the roller type conveying platform of the steel plate rolling pre-bending auxiliary device and the top surface of the concave die 16-1 of the bending die can be compensated for vertical displacement generated when two sides of the strip-shaped steel plate 14 in the length direction are bent downwards by increasing the height of the upper surface of the roller type conveying platform of the steel plate rolling pre-bending auxiliary device, at the moment, one side of the strip-shaped steel plate 14 is lifted upwards to be flush with the top surface of the concave die 16-1 of the bending die without an auxiliary tool, and the steel plate rolling pre-bending auxiliary device is simple and convenient to operate and good in use effect.
Step two, respectively adjusting the height of the horizontal support plate of the two steel plate rolling pre-bending auxiliary devices and the installation position of the guide wheel installation frame of the two steel plate rolling pre-bending auxiliary devices in the width direction of the frame:
firstly, respectively adjusting the heights of the horizontal support plates of the two steel plate rolling pre-bending auxiliary devices to enable the heights of the horizontal support plates of the two steel plate rolling pre-bending auxiliary devices to be lower than the upper surface of the roller type conveying platform; then, according to the width of the steel plate 14 and the width of the female die 16-1 of the bending die, the installation positions of the guide wheel mounting frames of the two steel plate rolling pre-bending auxiliary devices in the width direction of the frame are respectively adjusted, so that the gap between the guide wheels of the two steel plate rolling pre-bending auxiliary devices and the edges of the steel plate 14 in the width direction is 3 mm-5 mm;
In this embodiment, in the process of conveying the steel plate 14, the roller type conveying platform plays a main supporting role, only when one side of the steel plate 14 is pre-bent, and the other side of the steel plate 14 is tilted upward, the auxiliary supporting mechanism plays a main supporting role, more importantly, in actual use, the preset jacking force of the oil cylinder is smaller than the dead weight of the steel plate 14, if the height of the horizontal supporting plate of the auxiliary supporting mechanism is higher than that of the roller type conveying platform when the steel plate 14 is lifted, the oil cylinder cannot bear the dead weight of the steel plate 14 at all, and damage to the oil cylinder is easily caused, so before the steel plate 14 is lifted, the height of the horizontal supporting plate of the auxiliary supporting mechanism should be adjusted to be lower than the roller type conveying platform.
Hoisting the steel plate:
hoisting the steel plate 14 to the roller type conveying platform of the steel plate rolling pre-bending auxiliary device positioned at the rear side of the press 15 by adopting a hoisting tool;
step four, conveying the steel plate, and pre-bending one side of the steel plate:
step 401, starting a motor 5 of the steel plate rolling pre-bending auxiliary device positioned at the rear side of the press machine 15, driving the steel plate 14 to move forwards, enabling the steel plate 14 to gradually approach the bending die mounted on the press machine 15, and closing the motor 5 of the steel plate rolling pre-bending auxiliary device positioned at the rear side of the press machine 15 when one side of the steel plate 14 is positioned right above a female die 16-1 of the bending die, and stopping conveying the steel plate 14;
Step 402, driving the male die 16-2 of the bending die to move downwards by the press 15 until the female die 16-1 and the male die 16-2 are closed, and pre-bending one side of the steel plate 14;
step 403, driving the male die 16-2 of the bending die to move upwards by the press 15, opening the female die 16-1 and the male die 16-2, and dropping the steel plate 14 onto the roller type conveying platform of the steel plate rolling pre-bending auxiliary device positioned at the rear side of the press 15;
continuously conveying the steel plate, and pre-bending the other side of the steel plate:
step 501, restarting the motor 5 of the steel plate rolling pre-bending auxiliary device positioned at the rear side of the press machine 15, driving the steel plate 14 to continuously move forwards, enabling the steel plate 14 to gradually pass through the bending die, closing the motor 5 of the steel plate rolling pre-bending auxiliary device positioned at the rear side of the press machine 15 when one side of the steel plate 14 is positioned right above the power roller 3 of the steel plate rolling pre-bending auxiliary device positioned at the front side of the press machine 15, starting the motor 5 of the steel plate rolling pre-bending auxiliary device positioned at the front side of the press machine 15, continuously transmitting the steel plate 14, and closing the motor 5 of the steel plate rolling pre-bending auxiliary device positioned at the front side of the press machine 15 when the other side of the steel plate 14 is positioned right above the concave die 16-1 of the bending die, and stopping transmitting the steel plate 14;
Step 502, driving the male die 16-2 of the bending die to move downwards by the press 15 until the female die 16-1 and the male die 16-2 are closed, and pre-bending the other side of the steel plate 14;
step 503, the press 15 drives the male die 16-2 of the bending die to move upwards, so that the female die 16-1 and the male die 16-2 are opened, and the steel plate 14 falls onto the roller type conveying platform of the steel plate rolling pre-bending auxiliary device positioned at the front side of the press 15;
in this embodiment, through the cooperation of two this steel sheet rolling preflex auxiliary device, can realize under the condition of once hoist and mount, only need to carry out continuous transmission to steel sheet 14, just can all realize the preflex to the both sides of steel sheet 14, operation mode is simple, has improved the machining efficiency of steel sheet rolling preflex processing, has guaranteed the machining precision of steel sheet rolling preflex processing.
Step six, exiting and hanging away the steel plate:
restarting the motor 5 of the steel plate rolling pre-bending auxiliary device positioned at the front side of the press machine 15, driving the steel plate 14 to continuously move forwards, enabling the steel plate 14 to gradually move away from the bending die, closing the motor 5 of the steel plate rolling pre-bending auxiliary device positioned at the front side of the press machine 15 after the steel plate 14 is completely separated from the bending die, and lifting the steel plate 14 from the roller type conveying platform of the steel plate rolling pre-bending auxiliary device positioned at the front side of the press machine 15 by adopting a lifting appliance.
When in actual use, when only one side of the steel plate 14 is required to be rolled and pre-bent, only the steel plate rolling pre-bending auxiliary device is required to be supported at the front side or the rear side of the press machine along the conveying direction of the steel plate, firstly, after the steel plate 14 is hoisted to the roller type conveying platform by adopting a lifting appliance, the motor 5 is started, the motor 5 rotates positively to drive the steel plate 14 to move forwards, so that the steel plate 14 is gradually close to the bending die arranged on the press machine 15, and when one side of the steel plate 14 is positioned right above the concave die 16-1 of the bending die, the motor 5 is closed to stop conveying the steel plate 14; secondly, a press 15 drives a male die 16-2 of the bending die to move downwards until the female die 16-1 and the male die 16-2 are closed, and one side of the steel plate 14 is pre-bent; then, the punch 16-2 of the bending die is driven by the press 15 to move upwards until the die 16-1 and the punch 16-2 are opened, and the steel plate 14 falls onto the roller type conveying platform; then, the motor 5 is started, the motor 5 is reversed to drive the steel plate 14 to move backwards, so that the steel plate 14 is gradually far away from the bending die arranged on the press machine 15, after the steel plate 14 is completely separated from the bending die, the motor 5 is closed, and the steel plate 14 is adjusted away from the roller type conveying platform by adopting a lifting appliance.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any simple modification, variation and equivalent structural changes made to the above embodiment according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (6)
1. A steel plate rolling pre-bending processing method is characterized in that: the steel plate rolling pre-bending auxiliary device adopted in the processing method comprises a frame, a roller type conveying platform horizontally installed at the top end of the frame, an auxiliary supporting mechanism vertically installed on the frame and a guide mechanism arranged at two sides of the roller type conveying platform and used for limiting the moving direction of a steel plate (14), wherein the roller type conveying platform comprises a power roller (3) and an unpowered roller (4) installed at the top end of the frame, the axis of the power roller (3) and the axis of the unpowered roller (4) are vertical to the direction of the steel plate (14) entering a press machine (15) in a horizontal plane, the frame comprises a first frame (1) and a second frame (2) which are identical in structure and are arranged on the same straight line, the first frame (1) is provided with the power roller (3) and the unpowered roller (4), the second frame (2) is provided with at least two unpowered rollers (4), the power roller (3) is driven by a motor (5), the auxiliary supporting mechanism comprises a horizontal supporting plate, the axis of the power roller (3) is arranged below the horizontal supporting plate and is used for jacking the horizontal supporting plate, the guide roller is installed at the top end of the guide roller assembly, and the guide roller assembly is installed at the top end of the guide roller assembly is installed on the guide roller assembly along the center line of the guide roller assembly, and the guide roller assembly is installed at the top end of the guide roller assembly is arranged on the guide wheel assembly, and the guide roller assembly is installed on the guide frame and the guide frame is arranged on the top end of the guide roller assembly;
The processing method comprises the following steps:
step one, supporting the steel plate rolling pre-bending auxiliary device on the front side and the rear side of the press machine along the conveying direction of the steel plate:
the steel plate rolling pre-bending auxiliary devices are supported on the front side and the rear side of the press machine (15) along the conveying direction of the steel plate, the two steel plate rolling pre-bending auxiliary devices are symmetrically distributed along the vertical center line of the press machine (15), and the upper surfaces of the roller type conveying platforms of the two steel plate rolling pre-bending auxiliary devices are flush with the top surface of a female die (16-1) of a bending die arranged on the press machine (15);
step two, respectively adjusting the height of the horizontal support plate of the two steel plate rolling pre-bending auxiliary devices and the installation position of the guide wheel installation frame of the two steel plate rolling pre-bending auxiliary devices in the width direction of the frame:
firstly, respectively adjusting the heights of the horizontal support plates of the two steel plate rolling pre-bending auxiliary devices to enable the heights of the horizontal support plates of the two steel plate rolling pre-bending auxiliary devices to be lower than the upper surface of the roller type conveying platform; then, according to the width of the steel plate (14) and the width of a female die (16-1) of the bending die, respectively adjusting the mounting positions of the guide wheel mounting frames of the two steel plate rolling pre-bending auxiliary devices in the width direction of the frame so that the gap between the guide wheels of the two steel plate rolling pre-bending auxiliary devices and the edges of the steel plate (14) in the width direction is 3 mm-5 mm;
Hoisting the steel plate:
hoisting a steel plate (14) to the roller type conveying platform of the steel plate rolling pre-bending auxiliary device positioned at the rear side of the press (15) by adopting a hoisting tool;
step four, conveying the steel plate, and pre-bending one side of the steel plate:
step 401, starting a motor (5) of the steel plate rolling pre-bending auxiliary device positioned at the rear side of the press machine (15), driving the steel plate (14) to move forwards, enabling the steel plate (14) to gradually approach the bending die arranged on the press machine (15), and closing the motor (5) of the steel plate rolling pre-bending auxiliary device positioned at the rear side of the press machine (15) when one side of the steel plate (14) is positioned right above a female die (16-1) of the bending die, and stopping conveying the steel plate (14);
step 402, driving a male die (16-2) of the bending die to move downwards by a press (15) until the female die (16-1) and the male die (16-2) are closed, and pre-bending one side of the steel plate (14);
step 403, driving a male die (16-2) of the bending die to move upwards by a press (15) to open the female die (16-1) and the male die (16-2), and enabling the steel plate (14) to fall onto the roller type conveying platform of the steel plate rolling pre-bending auxiliary device positioned at the rear side of the press (15);
Continuously conveying the steel plate, and pre-bending the other side of the steel plate:
step 501, restarting a motor (5) of the steel plate rolling pre-bending auxiliary device positioned at the rear side of the press machine (15), driving the steel plate (14) to continuously move forwards, enabling the steel plate (14) to gradually pass through the bending die, closing the motor (5) of the steel plate rolling pre-bending auxiliary device positioned at the rear side of the press machine (15) when one side of the steel plate (14) is positioned right above a power roller (3) of the steel plate rolling pre-bending auxiliary device positioned at the front side of the press machine (15), starting the motor (5) of the steel plate rolling pre-bending auxiliary device positioned at the front side of the press machine (15), continuously conveying the steel plate (14), and stopping conveying the steel plate (14) when the other side of the steel plate (14) is positioned right above a concave die (16-1) of the bending die;
step 502, driving a male die (16-2) of the bending die to move downwards by a press (15) until the female die (16-1) and the male die (16-2) are closed, and pre-bending the other side of the steel plate (14);
Step 503, a press (15) drives a male die (16-2) of the bending die to move upwards, so that the female die (16-1) and the male die (16-2) are opened, and the steel plate (14) falls onto the roller type conveying platform of the steel plate rolling pre-bending auxiliary device positioned at the front side of the press (15);
step six, exiting and hanging away the steel plate:
restarting a motor (5) of the steel plate rolling pre-bending auxiliary device positioned at the front side of the press machine (15), driving the steel plate (14) to continuously move forwards, gradually keeping the steel plate (14) away from the bending die, closing the motor (5) of the steel plate rolling pre-bending auxiliary device positioned at the front side of the press machine (15) after the steel plate (14) is completely separated from the bending die, and lifting the steel plate (14) from the roller type conveying platform of the steel plate rolling pre-bending auxiliary device positioned at the front side of the press machine (15) by adopting a lifting appliance;
when the steel plate (14) enters the press (15) and one side of the steel plate (14) is pre-bent through the bending die, the other side of the steel plate (14) can tilt upwards, namely the acting force of the steel plate (14) on a piston rod of the oil cylinder disappears, at the moment, the piston rod of the oil cylinder can continuously lift up, so that the horizontal support plate continuously abuts against the bottom surface of the steel plate (14), namely when the bending die closes one side of the pre-bent steel plate (14), the other side of the steel plate (14) is always in a supported state, the resilience force of the other side of the steel plate (14) is effectively reduced, the stability of the steel plate (14) in the transmission process is improved, and the pre-bending precision of the steel plate (14) is ensured.
2. A method of pre-bending a steel sheet roll according to claim 1, wherein: the motor (5) is in transmission connection with the power roller (3) through a chain transmission assembly, and the chain transmission assembly comprises a driving sprocket (6-1) fixedly installed on an output shaft of the motor (5), a driven sprocket (6-2) installed at one end of the power roller (3) and a chain (6-3) used for connecting the driving sprocket (6-1) and the driven sprocket (6-2).
3. A steel sheet rolling preflex processing method according to claim 2, characterized in that: the number of the auxiliary supporting mechanisms is two, the two auxiliary supporting mechanisms are respectively a first auxiliary supporting mechanism installed on the first frame (1) and a second auxiliary supporting mechanism installed on the second frame (2), the first auxiliary supporting mechanism comprises a first horizontal supporting plate (7-1), a first oil cylinder arranged below the first horizontal supporting plate (7-1) and used for jacking the first horizontal supporting plate (7-1) and a first spring supporting component installed at the top end of a first oil cylinder piston rod (8-1-1) of the first oil cylinder, the second auxiliary supporting mechanism comprises a second horizontal supporting plate (7-2), a second oil cylinder arranged below the second horizontal supporting plate (7-2) and used for jacking the second horizontal supporting plate (7-2) and a second spring supporting component installed at the top end of a second oil cylinder piston rod (8-2-1) of the second oil cylinder, a first oil cylinder body (8-1-2) of the first oil cylinder is fixedly installed on the first frame (1), and the second oil cylinder body (8-2) is fixedly installed on the second frame (2).
4. A steel sheet rolling preflex processing method according to claim 2, characterized in that: the number of the guide mechanisms is two, the two guide mechanisms are respectively a first guide mechanism installed on a first frame (1) and a second guide mechanism installed on a second frame (2), the first guide mechanism comprises two first guide wheel installation frames (11-1) symmetrically arranged along the central line of the length direction of the roller type conveying platform, first guide wheels (12-1) installed on the first guide wheel installation frames (11-1) and first guide plates (13-1) installed on the top ends of the first guide wheel installation frames (11-1), the second guide mechanism comprises two second guide wheel installation frames (11-2) symmetrically arranged along the central line of the length direction of the roller type conveying platform, second guide wheels (12-2) installed on the second guide wheel installation frames (11-2) and second guide plates (13-2) installed on the top ends of the second guide wheel installation frames (11-2), and the height of each second guide plate (13-2) is higher than that of each first guide plate (13-1).
5. A steel sheet rolled pre-bending processing method according to claim 3, wherein: the first spring support assembly comprises a first compression spring positioning shaft (9-1-1) fixedly arranged at the top end of a first oil cylinder piston rod (8-1-1), a first compression spring (9-1-2) sleeved on the first compression spring positioning shaft (9-1-1) and a first fixing sleeve (9-1-3) sleeved on the outer side of the first compression spring (9-1-2), and the top end of the first fixing sleeve (9-1-3) is fixedly arranged on the bottom surface of the first horizontal support plate (7-1); the second spring support assembly comprises a second compression spring positioning shaft (9-2-1) fixedly arranged at the top end of a second oil cylinder piston rod (8-2-1), a second compression spring (9-2-2) sleeved on the second compression spring positioning shaft (9-2-1) and a second fixing sleeve (9-2-3) sleeved on the outer side of the second compression spring (9-2), and the top end of the second fixing sleeve (9-2-3) is fixedly arranged on the bottom surface of the second horizontal support plate (7-2).
6. A steel sheet rolled pre-bending processing method according to claim 3, wherein: the upper surface of first horizontal support plate (7-1) is provided with first rubber pad (10-1), the upper surface of second horizontal support plate (7-2) is provided with second rubber pad (10-2).
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