CN211489866U

CN211489866U - Automatic detect fast flying shear of thickness accuse

Info

Publication number: CN211489866U
Application number: CN201922476813.9U
Authority: CN
Inventors: 李刚
Original assignee: Mingtaifu Guangzhou Metal Products Co ltd
Current assignee: Mingtaifu Guangzhou Metal Products Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-09-15
Anticipated expiration: 2029-12-31

Abstract

The utility model provides an automatic detect thickness fast control flying shear, used for the steel sheet shearing, including a base, a flying shear mechanism and driving motor including an upper cutter and a lower cutter, a feed mechanism, a discharge mechanism, a collection mechanism and a PLC control system, the feed mechanism includes a unreeling shaft, a driving pinch roll and a driven pinch roll which are arranged on the base in order along the horizontal direction, a predetermined number of upper leveling rolls and lower leveling rolls which are arranged correspondingly along the vertical direction, and a driving auxiliary roll which is arranged correspondingly along the vertical direction, one end of the lower leveling roll far away from the unreeling shaft is provided with a height sensor for detecting the distance between the upper leveling roll and the lower leveling roll, the PLC control system controls the transmission speed and the shearing speed according to the received distance information, the control demand of different speeds of different plate thicknesses is realized automatically, the working efficiency and the shearing accuracy are ensured, and the vibration of the equipment can be reduced to ensure the running stability.

Description

Automatic detect fast flying shear of thickness accuse

Technical Field

The utility model relates to a five metals machining equipment field especially relates to a quick flying shear of automated inspection thickness accuse.

Background

With the continuous increase of the production quantity just produced in modernization, the steel rolling production is continuously accelerated, the demand of the breaking flying shear is continuously increased, and the quality requirement on the flying shear is higher and higher. In the prior art, when the shearing speed of a flying shear reaches a certain point, the whole equipment and a driving motor can vibrate strongly to cause equipment damage, so that the shearing speed and the conveying speed of the flying shear are both adapted to the thickness of a steel plate, relatively speaking, the steel plate with a thicker thin steel plate can be sheared easily, the shearing speed and the conveying speed can be faster without influencing the operation of the equipment, the working efficiency is improved, and if the conveying speed is too fast and the shearing speed is too slow, or the conveying speed is too slow and the shearing speed is too fast, the shearing accuracy is reduced, even the equipment damage is caused, in the prior art, the design of the flying shear does not have a related design for automatically controlling the equipment speed according to the thickness of the steel plate, a flying shear needs to be designed, the optimal shearing speed and the conveying speed of the equipment can be automatically adjusted according to the thickness of the steel plate, and the optimal working efficiency is obtained, avoid equipment vibration, cause equipment damage to and avoid the fritter steel sheet after the shearing to fly away from conveyer belt center, thereby improve equipment operating stability and work simplicity.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a quick flying shear of automated inspection thickness accuse can make work efficiency optimization according to steel sheet thickness automatically regulated to the equipment optimum speed, also can ensure equipment operating stability and convenient operation nature.

In order to achieve the above object, the utility model provides an automatic detection thickness control flying shear for steel plate shearing, including a base, a flying shear mechanism and its drive motor including an upper cutter and a lower cutter, the automatic detection thickness control flying shear also includes a feed mechanism, a discharge mechanism, a collection mechanism and a PLC control system; the feeding mechanism comprises an unwinding shaft, a feeding clamping and feeding part, a leveling part and an auxiliary transition part which are sequentially arranged on the base in the horizontal direction, the feeding clamping and feeding part comprises a driving pinch roller and a driven pinch roller which are correspondingly arranged in the vertical direction, the leveling part comprises an upper leveling roller and a lower leveling roller which are correspondingly arranged in the vertical direction and are in a preset number, the auxiliary transition part comprises a driving auxiliary roller and a driven clamping auxiliary roller which are correspondingly arranged in the vertical direction, the unwinding shaft is used for placing and conveying a steel plate coil, one end, far away from the unwinding shaft, of the lower leveling roller is provided with a height sensor for detecting the distance between the upper leveling roller and the lower leveling roller, and the flying shear mechanism is arranged on one side, far away from the unwinding shaft, of the auxiliary transition part; the discharging mechanism comprises a conveying belt, and the conveying belt is arranged at one end, far away from the unreeling shaft, of the flying shear mechanism; the collecting mechanism comprises a finished product storing trolley, the finished product storing trolley is arranged at the conveying tail end, far away from the unreeling shaft, of the conveying belt, the finished product storing trolley comprises a collecting plate, a height adjusting piece and a preset number of universal wheels, the height adjusting piece is arranged below the collecting plate, the preset number of universal wheels are arranged below the height adjusting piece, and the height of the height adjusting piece is automatically adjusted according to the weight collected in the collecting plate; the PLC control system comprises a PLC master controller and an operation table touch screen, wherein the operation table touch screen is used for displaying and inputting data and operation instructions and is connected with the PLC master controller; the unreeling shaft is driven to rotate by a first motor, the driving pinch roll and the driving auxiliary roll are jointly driven by a second motor, the driven pinch roll and the driven auxiliary roll are driven by a third motor, the driving pinch roll and the driving auxiliary roll are opposite to the driven pinch roll and the driven auxiliary roll in rotation directions, the lower leveling roll is driven by a fourth motor, the conveying belt is driven by a fifth motor, the first motor, the second motor, the third motor, the fourth motor, the fifth motor, the transmission motor and the height sensor are all connected with the PLC master controller, the PLC master controller receives detection signals of the height sensor and controls the output frequencies of the first motor, the second motor, the third motor, the fourth motor, the fifth motor and the transmission motor according to the signals, the control adjusts the shear rate and the conveying speed of the equipment.

Further preferably, a sliding guide rail is arranged below the unreeling shaft, a feeding trolley is arranged on the sliding guide rail in a sliding mode and used for placing steel plate coils and sleeving the steel plate coils on the unreeling shaft.

Preferably, a support plate is arranged at one end, far away from the conveyor belt, of the finished product storage trolley, a preset number of connecting rods are arranged on the support plate in a penetrating and sliding mode, one end, close to the conveyor belt, of each connecting rod is connected with a rear baffle, two side baffles and an aggregate clapper arranged above the two side baffles are arranged above the collection plate, one ends, close to the conveyor belt, of the two side baffles are connected with the base and the aggregate clapper in a sliding mode, and the sliding direction is perpendicular to the conveying direction of the steel plates.

Preferably, the height adjusting member includes a connecting plate disposed at an upper end of the universal wheel and a predetermined number of pairs of connecting rods having two ends respectively slidably connected to the connecting plate and the collecting plate, each pair of connecting rods is disposed between the connecting plate and the collecting plate in a pair, and each pair of connecting rods is disposed in parallel.

Preferably, a predetermined number of sliding grooves are correspondingly formed in one sides, close to the connecting rods, of the connecting plate and one side, close to the collecting plates, of the connecting plates, two ends of each connecting rod are correspondingly arranged in the sliding grooves, two ends in the sliding grooves are connected with springs, and one ends, which are not connected with the sliding grooves, of the springs are connected with the connecting rods.

Preferably, the conveyor belt is provided with two baffles, the two baffles are inverted L-shaped, a support plate is arranged on each of two sides of the conveyor belt, the support plates are connected with the baffles through telescopic rods, the distance between the baffles can be adjusted according to the width of the steel plate, and one ends of the two baffles, which are close to the conveyor belt, are flush with the conveyor belt and used for preventing the small steel plates after being sheared from deviating from the center of the conveyor belt.

The utility model has the advantages that: the utility model provides a quick flying shear of automated inspection thickness accuse, the ware detects through a height sensor and goes up the interval between leveling roller and lower leveling roller, thereby discernment steel sheet thickness, PLC master controller draws conveying speed and the shear rate of the correspondence of PLC master controller program setting according to the steel sheet thickness that detects, thereby realize the automatic accuse of the different steel sheet widths of different steel sheet thickness fast, make conveying speed and shear rate all control at the optimum, conveying speed and shear rate suit with steel sheet thickness and width, can guarantee work efficiency, also can reduce equipment vibrations and ensure operating stability, the steel sheet accuracy of cuting has been guaranteed simultaneously.

Through set up two baffles that can adjust interval according to the steel sheet width on the conveyer belt, can avoid the fritter steel sheet after the shearing skew conveyer belt center or fly away from the conveyer belt guarantees to fold the sign indicating number neatly, reduces intensity of labour.

Can be according to collection mechanism, backplate and the clappers that gathers materials of collecting steel sheet weight automatically regulated height through setting up, make the position that the fritter steel sheet was collected to the collecting plate be same position all the time, the fritter steel sheet of successively collecting is neatly laminated together, the dress of being convenient for to and through setting up the universal wheel, make and easily promote collection mechanism, low in labor strength, convenient to use.

Drawings

Fig. 1 is a schematic structural view of a flying shear with automatic thickness detection and speed control provided in a first embodiment;

fig. 2 is a schematic structural view of a discharging mechanism in the flying shear with automatic thickness detection and speed control provided in the first embodiment.

Detailed Description

The embodiments described below are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example 1

Referring to fig. 1, the embodiment provides an automatic thickness detection and speed control flying shear, which is used for shearing a steel plate 100 and comprises a base, a flying shear mechanism comprising an upper cutter 11 and a lower cutter 12, and a transmission motor thereof, wherein the transmission motor is used for driving the flying shear mechanism to shear the steel plate 100, and the automatic thickness detection and speed control flying shear further comprises a feeding mechanism, a discharging mechanism, a collecting mechanism and a PLC control system.

Feeding mechanism includes that the horizontal direction sets gradually one unreels axle 21, a feeding pinch piece, a flattening piece and an supplementary transition piece on the base, feeding pinch piece includes vertical direction to a initiative pinch roll 22 and a driven pinch roll 23 that corresponds the setting, flattening piece includes the last flattening roller 24 and lower flattening roller 25 of the predetermined quantity that corresponds the setting in the vertical direction, supplementary transition piece includes a initiative auxiliary roll 26 and a driven auxiliary roll 27 that correspond the setting in the vertical direction, it rotates through a motor drive to unreel axle 21 for place the steel sheet book and convey the steel sheet. Unreel the spool below and be equipped with a sliding guide 211, sliding guide 211 goes up to slide and is provided with a material loading platform truck 212, material loading platform truck 212 slides through a driving motor drive for place the steel sheet and roll up 101 and will the steel sheet is rolled up 101 suit and is in on the unreeling axle 21, only need to roll up the steel sheet and place on the material loading platform truck 212, can by the driving motor drive material loading platform truck 212 slides and is in with the steel sheet suit on the unreeling axle 21. The driving pinch roll 22 and the driving auxiliary roll 26, the driven pinch roll 23 and the driven auxiliary roll 27 are respectively connected through a belt, the driving pinch roll 22 is driven to rotate through a second motor, so that the driving auxiliary roll 26 is driven to rotate through the belt, the driven pinch roll 23 is driven through a third motor, so that the driving auxiliary roll 27 is driven to rotate through the belt, the rotating direction of the driven pinch roll 23 and the driven auxiliary roll 27 is opposite to that of the driving pinch roll 22 and the driving auxiliary roll 26, the preset number of connecting points of the driven pinch roll 23, the driven auxiliary roll 27 and the upper leveling roll 24 and the base can respectively adjust the distance between the driving pinch roll 22, the driving auxiliary roll 26 and the lower leveling roll 25 according to the thickness of the steel plate, and each lower leveling roll 25 is driven to rotate through a fourth motor, one end of the lower leveling roller 25, which is far away from the unreeling shaft 21, is provided with a height sensor 28 for detecting a distance between the upper leveling roller 24 and the lower leveling roller 25, that is, a thickness of the steel plate. And a length measuring wheel 29 is arranged between the upper leveling roller and the lower leveling roller as well as the driving auxiliary roller and the driven auxiliary roller and is used for detecting the transmission length of the steel plate, and the length measuring wheel 29 is connected with the PLC control system.

The flying shear mechanism is arranged on one side of the driving auxiliary roller 26 and the driven auxiliary roller 27 away from the unreeling shaft 21. The flying shear mechanism comprises a lower fixed seat arranged on the base, two sliding rails are arranged on the base, the lower fixed seat is arranged on the sliding rails in a sliding manner, the extending direction of the sliding rails is consistent with the conveying direction of a steel plate, the lower cutter 12 is arranged on the lower fixed seat, an upper fixed seat is arranged above the lower fixed seat, the upper cutter 11 is arranged on one side of the upper fixed seat close to the lower fixed seat and is matched with the lower cutter 12 to shear the steel plate, the upper fixed seat and the lower fixed seat are provided with two corners which are connected through two guide rods, the upper fixed seat is connected with the guide rods in a sliding manner and can slide up and down along the guide rods, the upper fixed seat is provided with a driving roller in a penetrating manner, two base frames are arranged at the flying shear mechanism, the two base frames are respectively arranged at two sides of the flying shear mechanism, and two ends of the driving roller are respectively connected with the base frames through, crank rocker mechanism passes through the drive motor drive drives the drive roller is circular motion, and then drives the fixing base with cutter 12 is circular motion down, go up the fixing base and follow the connecting rod is up-and-down reciprocating motion, and the parallel with lower fixing base cutter 12 reaches down the guide arm is followed reciprocating motion is to the slide rail, works as when the drive roller rotates to circular motion bottom, go up cutter 11 with cutter 12 cooperation is once sheared the steel sheet down, and the per minute shearing number is the shearing speed of flying shear promptly.

Referring to fig. 1 and 2, the discharging mechanism includes a conveyor belt 31 and a fifth motor, the conveyor belt 31 is disposed at an end of the flying shear mechanism away from the unreeling shaft 21, the fifth motor is used for driving the conveyor belt 31, two baffles 32 are disposed on the conveyor belt 31, the two baffles 32 are in an "inverted L" shape, two support plates 33 are disposed on two sides of the conveyor belt 31, the support plates 33 are connected with the baffles 32 through a predetermined number of telescopic rods 34, when the flying shear works, when the shearing speed reaches a certain point, the steel plate 100 resonates, the small sheared steel plate 100 flies away from the center of the conveyor belt 31, so that stacking cannot be performed neatly, the workload is increased, and accidents can also occur, when the flying shear provided by this embodiment works, the distance between the two baffles 32 can be adjusted according to the width of the steel plate 100, the small pieces of the steel plates 100 after the shearing are prevented from being deviated from the center of the conveyor belt 31 or flying off the conveyor belt 31.

Collect the mechanism and include a finished product storage platform truck, finished product storage platform truck sets up conveyer belt 31 is kept away from unreel axle 21's conveying is terminal, finished product storage platform truck includes a collecting plate 41, sets up a height adjusting part 42 and the setting of collecting plate 41 below are in the universal wheel 43 of the predetermined quantity of height adjusting part 42 below, height adjusting part 42 can be according to the 100 weight automatically regulated self-height of steel sheet of collecting in the collecting plate 41. The height adjusting member 42 includes a connecting plate 421 disposed at the upper end of the universal wheel 43, and a predetermined number of pairs of connecting rods 422 having two ends slidably connected to the connecting plate 421 and the collecting plate 41, each pair of connecting rods 422 are disposed between the connecting plate 421 and the collecting plate 41 in a paired manner, each pair of connecting rods 422 are disposed in parallel, the length of each connecting rod 422 is the same, a predetermined number of sliding grooves are disposed on one sides of the connecting plate 421 and the collecting plate 41 close to the connecting rods 422, two ends of each connecting rod 422 are disposed in the corresponding sliding grooves, two ends of each sliding groove are connected to a spring, and one end of each spring, which is not connected to the sliding groove, is connected to the connecting rod 422. The finished product storage trolley is characterized in that a support plate 44 is arranged at one end, far away from the conveyor belt 31, of the finished product storage trolley, a preset number of connecting rods 45 are arranged on the support plate 44 in a penetrating and sliding mode, one end, close to the conveyor belt 31, of each connecting rod 45 is connected with a rear baffle 46, two side baffles 47 and an aggregate flap plate 48 arranged above the two side baffles 47 are arranged above the collection plate 41, the cross section of the aggregate flap plate 48 is inverted trapezoid, one ends, close to the conveyor belt 31, of the two side baffles 47 are in sliding connection with the base and the aggregate flap plate 48, the sliding direction is perpendicular to the steel plate conveying direction, the distance between the two side baffles 47 can be adjusted according to the width of a steel plate, and the distance between the rear baffle and one end, far away from the rear baffle. When the cut small steel plates 100 are conveyed to the collecting plate 41 through the conveyor belt 31, the gravity of the steel plates 100 applies downward pressure to the collecting plate 41 and the connecting rod 422, so that the two ends of the connecting rod 422 slide towards the two ends of the sliding groove, the height of the collecting plate 41 is reduced, meanwhile, in the process that the steel plates fall onto the collecting plate 41, an inclined surface, close to the conveyor belt 31, of the collecting clapper 48 can be in the steel plate guiding direction, the steel plates fall onto the collecting plate 41 from the same direction and angle, the position, where the collecting plate 41 collects the small steel plates 100, is always the same, the small steel plates 100 collected successively are orderly stacked together, the collecting and the loading are convenient, and the labor intensity is reduced.

The PLC control system comprises a PLC master controller 51 and an operation table touch screen 52, wherein the operation table touch screen 52 is used for displaying and inputting data and operation instructions, is connected with the PLC master controller 51, and can be used for presetting shearing speeds corresponding to the thicknesses and the widths of different steel plates 100 and inputting data such as the widths, the shearing lengths and the shearing numbers of the steel plates before the flying shears capable of automatically detecting the thickness and controlling the speed are used; length measuring wheel 29 with PLC master controller 51 is connected, and in the steel sheet shearing process, length measuring wheel 29 detects the steel sheet length data of actual shearing at every turn to with shearing length data transfer to PLC master controller, and pass through the operation panel touch-sensitive screen 52 shows to this makes the staff know the actual shearing length of steel sheet. When the flying shears shear shears steel plates with different thicknesses and widths, the shearing speed reaches a certain limit, so that the machine body of the equipment and the transmission motor vibrate, and the equipment is easily damaged, the thickness of the sheared steel plates of the automatic thickness detection and control flying shears is 0-3 mm, the width of the sheared steel plates is 0-400 mm, and the corresponding shearing speeds for shearing the steel plates with different thicknesses and widths are shown in the following table 1,

table 1 shear steel plate thickness and width versus shear rate correspondence table:

the first motor, the second motor, the third motor, the fourth motor, the fifth motor, the transmission motor and the height sensor 28 are all connected with the PLC master controller 51, the PLC master controller 51 receives a detection signal of the height sensor 28, extracts a corresponding shearing speed according to the signal, controls the output power of the transmission motor, controls and adjusts the rotating speed of the driving roller to be corresponding to the shearing speed, controls the output power of the first motor, the second motor, the third motor, the fourth motor and the fifth motor, controls and adjusts the transmission speed of each part, enables the conveying speed of the steel belt to be corresponding to the shearing length and the shearing speed, and guarantees the accuracy of shearing.

The embodiment provides an automatic detect fast flying shear of thickness accuse, its theory of operation is: through the operation panel touch screen 52, the shearing speed and the transmission speed corresponding to the thickness of different steel plates 100, the shearing length and the shearing quantity of the steel plates are set, the unreeling shaft 21 is driven by the first motor to rotate, so that the steel plate coil 101 on the unreeling shaft 21 is unreeled, the steel plates 100 pass through the driving pinch roll 22 and the driven pinch roll 23, the driving pinch roll 22 and the driven pinch roll 23 rotate in opposite directions through the driving of the second motor and the third motor, the steel plates 100 are conveyed to the upper leveling roll 24 and the lower leveling roll 25, the fourth motor drives the lower leveling roll 25 to move, the flattening and the transmission of the steel plates 100 are realized, then the steel plates 100 pass through the driving auxiliary roll 26 and the driven auxiliary roll 27 and enter the upper fixing seat and the lower fixing seat, and the steel plates 100 are sheared by the upper cutter 11 and the lower cutter 12, the cut small steel plates 100 are transmitted to the collecting plate 41 through the conveyor belt 31, in the process, the height sensor 28 detects the distance between the upper leveling roller 24 and the lower leveling roller 25, the distance is consistent with the thickness of the steel plates 100, the height sensor 28 transmits a detection signal to the PLC master controller 51 and displays the detection signal through the console touch screen 52, the PLC master controller 51 extracts the corresponding transmission speed and cutting speed preset in the PLC master controller 51 according to the thickness of the steel plates 100, and controls the output frequencies of the first motor, the second motor, the third motor, the fourth motor, the fifth motor and the transmission motor, so as to control the movement speeds of the unreeling shaft 21, the driving pinch roller 22, the lower leveling roller 25, the driving auxiliary roller 26 and the conveyor belt 31, and the movement speed of the flying shear mechanism, the conveying speed and the shearing speed are realized, the control requirements of different conveying speeds and shearing speeds of different thicknesses of the steel plate 100 are realized automatically, the conveying speed and the shearing speed are controlled in the most suitable state, the conveying speed and the shearing speed are adaptive to the thickness and the width of the steel plate 100, the working efficiency can be guaranteed, the damage to equipment caused by the vibration of the equipment and the motor due to the heavy load of the motor with the excessive shearing speed can be avoided, the running stability of the equipment is ensured, and the shearing accuracy of the steel plate 100 is guaranteed.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the scope of the invention, which is defined by the appended claims.

Claims

1. An automatic thickness detection and speed control flying shear is used for shearing a steel plate and comprises a base, a flying shear mechanism and a transmission motor, wherein the flying shear mechanism is provided with an upper cutter and a lower cutter;

the feeding mechanism comprises an unwinding shaft, a feeding clamping and feeding part, a leveling part and an auxiliary transition part which are sequentially arranged on the base in the horizontal direction, the feeding clamping and feeding part comprises a driving pinch roller and a driven pinch roller which are correspondingly arranged in the vertical direction, the leveling part comprises an upper leveling roller and a lower leveling roller which are correspondingly arranged in the vertical direction and are in a preset number, the auxiliary transition part comprises a driving auxiliary roller and a driven auxiliary roller which are correspondingly arranged in the vertical direction, the unwinding shaft is used for placing and conveying a steel plate coil, one end, far away from the unwinding shaft, of the lower leveling roller is provided with a height sensor which is used for detecting the distance between the upper leveling roller and the lower leveling roller, and the flying shear mechanism is arranged on one side, far away from the unwinding shaft, of the auxiliary transition part;

the discharging mechanism comprises a conveying belt, and the conveying belt is arranged at one end, far away from the unreeling shaft, of the flying shear mechanism;

the collecting mechanism comprises a finished product storing trolley, the finished product storing trolley is arranged at the conveying tail end, far away from the unreeling shaft, of the conveying belt, the finished product storing trolley comprises a collecting plate, a height adjusting piece and a preset number of universal wheels, the height adjusting piece is arranged below the collecting plate, the preset number of universal wheels are arranged below the height adjusting piece, and the height of the height adjusting piece is automatically adjusted according to the weight of steel plates collected on the collecting plate;

the PLC control system comprises a PLC master controller and an operation table touch screen, wherein the operation table touch screen is used for displaying and inputting data and operation instructions and is connected with the PLC master controller;

the unreeling shaft is driven to rotate by a first motor, the driving pinch roll and the driving auxiliary roll are jointly driven by a second motor, the driven pinch roll and the driven auxiliary roll are driven by a third motor, the driving pinch roll and the driving auxiliary roll are opposite to the driven pinch roll and the driven auxiliary roll in rotation directions, the lower leveling roll is driven by a fourth motor, the conveying belt is driven by a fifth motor, the first motor, the second motor, the third motor, the fourth motor, the fifth motor, the transmission motor and the height sensor are all connected with the PLC master controller, the PLC master controller receives detection signals of the height sensor and controls the output frequencies of the first motor, the second motor, the third motor, the fourth motor, the fifth motor and the transmission motor according to the signals, the control adjusts the shear rate and the conveying speed of the equipment.

2. The flying shear with the thickness being automatically detected and the speed being controlled as claimed in claim 1, wherein a sliding rail is arranged below the unreeling shaft, a feeding trolley is slidably arranged on the sliding rail, and the feeding trolley is used for placing the steel plate coil and sleeving the steel plate coil on the unreeling shaft.

3. The flying shear with the function of automatically detecting thickness and controlling speed as claimed in claim 1, wherein a supporting plate is disposed at an end of the finished product storage trolley away from the conveyor belt, a predetermined number of connecting rods are slidably disposed on the supporting plate, a rear baffle is connected to an end of the connecting rod close to the conveyor belt, a two-sided baffle and a collecting flap are disposed above the collecting plate, and an end of the two-sided baffle close to the conveyor belt is slidably connected to the base and the collecting flap, and the sliding direction is perpendicular to the conveying direction of the steel plate.

4. The flying shear of claim 3, wherein said height adjustment means comprises a connecting plate disposed at the upper end of said universal wheel and a predetermined number of pairs of connecting rods slidably connecting said connecting plate and said collecting plate at the two ends thereof, respectively, each of said connecting rods being disposed between said connecting plate and said collecting plate in pairs, each pair of connecting rods being disposed in parallel.

5. The flying shear with the function of automatically detecting thickness and controlling speed as claimed in claim 4, wherein a predetermined number of sliding grooves are correspondingly arranged on the connecting plate and one side of the collecting plate close to the connecting rod, two ends of each connecting rod are correspondingly arranged in each sliding groove, a spring is connected to each end of each sliding groove, and one end of each spring, which is not connected with the sliding groove, is connected with the connecting rod.

6. The flying shear with the automatic thickness detection and speed control function as claimed in claim 1, wherein two baffles are arranged on the conveyor belt, the two baffles are in an inverted L shape, a support plate is arranged on each of two sides of the conveyor belt, the support plate is connected with the baffles through a telescopic rod, and one ends of the two baffles, which are close to the conveyor belt, are flush with the conveyor belt, so as to prevent the small steel plates after being sheared from deviating from the center of the conveyor belt.