Steel coil flying shear

Abstract

A steel coil flying shear relates to the field of flying shears. In order to solve the problems that an electrical system and moving parts are possibly damaged, residual water stains between stacked steel plates are caused, the steel plates are rusted, and the product quality is influenced when chippings are removed by a tool bit of the flying shear in a cleaning mode. The device comprises a steel plate conveying line, a shearing mechanism and a tool bit cleaning mechanism; the shearing mechanism is provided with two rotary knife rests and shear heads arranged on the rotary knife rests; a cleaning cover of the tool bit cleaning mechanism covers the rotary tool rest and forms an annular cleaning cavity with the rotary tool rest, and the cleaning cover is provided with an outlet; the two automatic switches can seal openings in the left side and the right side of the annular cleaning cavity. The switch shifting block is mounted on the rotary tool rest; the reset spring is used for resetting the automatic switch; in the steel plate conveying process, the two shear heads continuously rotate along with the rotary tool rest after shearing the steel plate, the switch shifting block triggers the automatic switch to open the opening, the shear heads enter the annular cleaning cavity, and the shear head cleaning brush removes chippings on the shear heads so as to collect the chippings into the annular cleaning cavity.

Description

Technical Field

[0001] The present invention relates to the technical field of flying shears, in particular to a steel coil flying shear. Background Art

[0002] Flying shears are devices that shear workpieces while they are in motion. They are essential components in continuous steel rolling lines. When shearing workpieces, they can generate debris, especially when cutting metal. This debris can splash onto the steel plates, causing scratches when they are stacked. It can also splash onto other areas, impacting the normal operation of the equipment. Furthermore, the blades can easily become contaminated with various pieces of debris, which can affect the efficiency of the next cut and erode the blade, shortening its service life.

[0003] In steel rolling production, all steel, except for coils and wire rods, is generally cut into fixed lengths. This type of shearing equipment is generally referred to as a shearing machine. A flying shear is a shearing machine used for horizontal shearing of rolled products. Its function is not only to cut steel into the specified length, but also to perform head and tail trimming functions, making the ends of the rolled products smooth. However, the debris generated during the shearing process may splash onto the surface of the steel plate, causing scratches on the surface when the steel plates are subsequently stacked; it may also be scattered to other areas, affecting the normal operation of the equipment. At the same time, the debris easily adheres to the blade body, not only reducing the accuracy and efficiency of subsequent steel plate edge cutting, but also corroding the blade body and shortening its service life. Although cleaning devices for flying shear blades exist in the prior art, such as the "cleaning flying shear" with publication number CN204770905U, these use a cleaning fluid cleaning method, which may not only damage the flying shear's electrical system and precision moving parts, but also cause water stains to remain between the stacked steel plates, thereby causing steel plate corrosion and affecting product quality. Summary of the Invention

[0004] In view of this, the present invention provides a steel coil flying shear, which uses a blade cleaning brush to clean the shear head to avoid damage to the electrical system and precision moving parts of the flying shear, and to avoid the problem of steel plate rust caused by residual water stains between stacked steel plates.

[0005] To achieve the above objectives, the present invention provides the following technical solutions.

[0006] 1. A steel coil flying shear comprises a steel plate conveyor line and a shearing mechanism arranged on the steel plate conveyor line for shearing the steel plates; the shearing mechanism comprises two rotary blade holders symmetrically arranged on the upper and lower sides of the steel plate conveyor line, each of which is equipped with a shearing head; and a shearing head cleaning mechanism for cleaning the shearing heads, the shearing head cleaning mechanism comprising a cleaning cover, a shearing head cleaning brush, an automatic switch, a switch block, and a return spring; the cleaning cover covers the rotary blade holder and forms an annular cleaning chamber with the cleaning cover; a shearing head outlet is provided on the side of the cleaning cover facing the steel plate conveyor line for the shearing heads to extend out; the shearing head cleaning brush is arranged on the annular shaped cleaning chamber, used to clean the debris on the scissor heads; there are two automatic switches and they are respectively arranged at the openings on the left and right sides of the annular cleaning chamber, used to close the openings; the switch block is installed on the rotary tool holder; the reset spring connects the automatic switch and the cleaning cover; the steel plate conveying line conveys the steel plate, and the upper and lower scissor heads continue to rotate with the rotary tool holder after shearing the steel plate, the switch block triggers the automatic switch to open the corresponding opening, and the scissor heads immediately enter the annular cleaning chamber, the reset spring drives the automatic switch to reset, and the blade cleaning brush removes the debris on the scissor heads to collect the debris into the annular cleaning chamber.

[0007] The blade cleaning mechanism is designed to remove metal debris from the shearing mechanism, preventing it from splashing onto the steel plate surface or other areas of the equipment. It also prevents debris from continuing to adhere to the blade, thereby ensuring subsequent cutting accuracy and efficiency of the steel plate edges. Furthermore, the blade cleaning mechanism utilizes a cleaning brush. Compared to cleaning methods using cleaning fluids, this design can prevent damage to the shear's electrical system and precision moving parts, as well as corrosion caused by residual water stains between stacked steel plates. The shearing mechanism utilizes a rotary shearing structure, which determines the shearing length based on the rotational speed of the rotary blade holder and the conveying speed of the steel plate conveyor line.

[0008] 2. Based on Technical Solution 1, the cutter head cleaning mechanism also includes a cutter head follower assembly and a brush head reciprocating assembly installed in the annular mounting cavity. The cutter head follower assembly can drive the cutter head cleaning brush to move synchronously with the scissors head so that the cutter head cleaning brush always fits the blade of the scissors head; the brush head reciprocating assembly can drive the cutter head cleaning brush to move back and forth along the blade of the scissors head so that the cutter head cleaning brush can brush off debris on the front and back sides of the scissors head blade.

[0009] 3. Based on Technical Solution 2, the cutter head follower assembly includes a follower motor, a follower gear, an annular slide and a Bowden bead chain. Two follower gears are provided and are respectively installed at both ends of the annular slide. The Bowden bead chain is embedded in the annular slide and is mounted on the two follower gears. The follower motor is driven and connected to the follower gear, and the cutter head cleaning brush is connected to the Bowden bead chain. When the follower motor drives the Bowden bead chain to move along the annular slide through the follower gear, the cutter head cleaning brush moves with the Bowden bead chain, so that the cutter head cleaning brush moves synchronously with the scissors head.

[0010] 4. Based on Technical Solution 2, the brush head reciprocating assembly includes a guide column, an arc-shaped rack, a return spring and an extrusion column. The guide column is connected to the cutter head follower assembly, the cutter head cleaning brush is slidably mounted on the guide column, the return spring connects the cutter head cleaning brush and the guide column, the extrusion column is installed on the cutter head cleaning brush, and the arc-shaped rack is located on one side of the cutter head cleaning brush; when the cutter head follower assembly drives the guide column to follow the movement of the scissors head, the extrusion column contacts the tooth surface of the arc-shaped rack and moves along the arrangement direction of the teeth. When the extrusion column moves from the root of the tooth of the arc-shaped rack to the tip of the tooth, the tip of the tooth pushes the extrusion column to move outward. When the extrusion column moves from the tip of the tooth of the arc-shaped rack to the root of the tooth, the return spring pulls the extrusion column to reset, and this is alternated so that the extrusion column drives the cutter head cleaning brush to reciprocate along the blade of the scissors head.

[0011] 5. Based on Technical Solution 1, a suction port connected to the annular cleaning chamber is provided on the cleaning cover, and an air blowing port is provided on the automatic switch. Air is supplied to the air blowing port of the automatic switch to blow away debris that falls on the automatic switch, and air is extracted from the suction port to remove debris in the annular cleaning chamber.

[0012] 6. Based on Technical Solution 1, a steel plate cleaning mechanism is provided on the steel plate conveying line. After the shearing mechanism shears the steel plate, the steel plate cleaning mechanism cleans the debris on the steel plate to prevent the debris from scratching the steel plate.

[0013] 7. Based on Technical Solution 6, the steel plate cleaning mechanism includes two steel plate cleaning units symmetrically arranged on the upper and lower sides of the steel plate conveying line, each steel plate cleaning unit includes a cleaning chamber and a steel plate cleaning brush installed in the cleaning chamber, and the cleaning chamber is provided with an opening on the side facing the steel plate conveying line. The steel plate cleaning brush extends out of the opening of the cleaning chamber and contacts the steel plate to clean the surface of the steel plate during the steel plate conveying process.

[0014] 8. Based on Technical Solution 1, the steel plate conveyor line includes multiple belt conveyor mechanisms arranged in sequence along the direction of travel. The belt conveyor mechanism located behind the shearing mechanism accelerates the conveying to form a gap between the cut steel plate and the mother plate; a steel plate acceleration mechanism is provided at the first belt conveyor mechanism behind the shearing mechanism; after the steel plate is sheared, the steel plate acceleration mechanism increases the travel speed of the cut steel plate so that it maintains synchronous operation with the first belt conveyor mechanism behind the shearing mechanism.

[0015] 9. Based on Technical Solution 8, the height of the belt conveyor mechanism located behind the shearing mechanism is lower than that of the belt conveyor mechanism in front; the steel plate acceleration mechanism includes a belt conveyor 41, an acceleration air cavity 45 and an acceleration cylinder. The acceleration air cavity 45 is arranged in the conveyor belt of the belt conveyor 41. There are multiple acceleration cylinders and they are fixed to the conveyor belt along the circumferential direction of the conveyor belt. The conveyor belt has a through hole corresponding to the position of the acceleration cylinder, which is connected to the inner cavity of the acceleration cylinder. When the acceleration cylinder moves with the conveyor belt to the position of the acceleration air cavity 45, the acceleration air cavity 45 inflates the acceleration cylinder through the through hole, and the piston rod of the acceleration cylinder extends and squeezes the cut steel plate onto the first belt conveyor mechanism behind the shearing mechanism to increase the maximum static friction between the cut steel plate and the belt conveyor mechanism.

[0016] 10. Based on technical solution 9, an electromagnet is provided at the cutter head outlet of the cleaning cover and at the rear side of the shearing station. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the steel coil flying shear of the present invention.

[0018] Figure 2 This is a schematic structural diagram of the steel coil flying shear of the present invention after the cleaning cover is removed.

[0019] Figure 3 This is a structural schematic diagram of the steel coil flying shear of the present invention from another perspective after the cleaning cover is removed.

[0020] Figure 4 It is a cross-sectional schematic diagram of the steel coil flying shear of the present invention when the shear head is in the shearing position.

[0021] Figure 5 It is a cross-sectional schematic diagram of the steel coil flying shear of the present invention when the automatic switch is opened.

[0022] Figure 6 It is a partial cross-sectional schematic diagram of the steel coil flying shear of the present invention when the shear head is located at the cutter head cleaning brush.

[0023] Figure 7 It is a structural diagram of the cleaning cover.

[0024] Figure 8 for Figure 4 A partial enlarged view of point A in the middle.

[0025] The accompanying drawings are: Steel plate conveying line 1, belt conveying mechanism 11; Shearing mechanism 2, bracket 21, shearing motor 22, driving gear 23, driven gear 24, rotary knife holder 25, scissor head 26; The tool head cleaning mechanism 3, the cleaning cover 31, the tool head outlet 311, the insertion slot 312, the suction port 313, the electromagnet 314, the tool head cleaning brush 32, the annular cleaning cavity 33, the automatic switch 34, the air blowing port 341, the switch knob 35, the return spring 36, the tool head follow-up assembly 37, the follow-up motor 371, the follow-up gear 372, the arc-shaped guide rail 373, the annular sliding groove 3731, the Bowden cable 374, the brush head reciprocating assembly 38, the guide column 381, the arc-shaped rack 382, the return spring 383, the extrusion column 384; The steel plate accelerating mechanism 4, the belt conveyor 4141, the air cover 42, the accelerating air cylinder 43, the homing spring 44, and the accelerating air cavity 45; The steel plate cleaning mechanism 5, the cleaning chamber 51, and the steel plate cleaning brush 52; The anti-swing mechanism 6, the driving block 61, the sliding block 62, the elastic member 63, and the anti-swing roller 64. DETAILED DESCRIPTION

[0026] The present application will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] Referring to Figure 1 , Figure 2 and Figure 3 , the steel coil flying shearing machine of the present embodiment is mainly used for shearing the steel plate in a coil into steel plate segments. It comprises a tool head cleaning mechanism 3, a steel plate conveying line 1, and a shearing mechanism 2, a steel plate accelerating mechanism 4, and a steel plate cleaning mechanism 5 arranged in sequence along the conveying direction of the steel plate. In combination with Figure 3 , the steel plate conveying line 1 is composed of a plurality of belt conveying mechanisms 11 arranged along the advancing direction, responsible for conveying the steel plate master plate and the cut steel plate. The shearing mechanism 2 is used to perform the shearing operation on the steel plate master plate; the tool head cleaning mechanism 3 is used to remove the metal debris attached to the shearing mechanism 2; the steel plate accelerating mechanism 4 is used to increase the conveying speed of the cut steel plate; and the steel plate cleaning mechanism 5 is used to clean the metal debris attached to the surface of the steel plate.

[0028] When the steel plate conveying line 1 conveys the to-be-cut part of the steel plate master plate to the shearing station of the shearing mechanism 2, the shearing mechanism 2 performs the shearing operation. Subsequently, the tool head cleaning mechanism 3 cleans and collects the metal debris attached to the shearing mechanism 2, and the belt conveying mechanism 11 located behind the shearing mechanism 2 immediately accelerates to run, so as to form a gap between the cut steel plate and the master plate, avoiding interference between the cut steel plate and the master plate during subsequent conveying. The steel plate accelerating mechanism 4 increases the advancing speed of the cut steel plate, so that it is synchronized with the first belt conveying mechanism 11 behind the shearing mechanism 2. Subsequently, the steel plate cleaning mechanism 5 cleans the metal debris attached to the steel plate.

[0029] As can be seen, the design of the blade cleaning mechanism 3 can remove metal debris attached to the shearing mechanism 2, preventing it from splashing onto the steel plate surface or other areas of the equipment; it can also prevent debris from continuing to adhere to the blade, thereby ensuring the accuracy and efficiency of subsequent cutting of the steel plate edges. The steel plate acceleration mechanism 4 accelerates the speed of cutting the steel plate, eliminating relative sliding between it and the acceleration belt conveyor mechanism 11, preventing metal debris from scratching the steel plate surface due to sliding friction. The steel plate cleaning mechanism 5 can remove debris from the steel plate surface, preventing debris from scratching the steel plate surface when the steel plates are subsequently cut and stacked.

[0030] See also Figure 2 、 Figure 4 and Figure 5 The shearing mechanism 2 of this embodiment is a rotary shearing structure, which includes a bracket 21, a shearing motor 22, a driving gear 23, a driven gear 24 and two rotary knife holders 25. Figure 2 The bracket 21 is installed on the steel plate conveying line 1, and the two rotary knife holders 25 are symmetrically arranged on the upper and lower sides of the steel plate conveying line 1 and are rotatably installed on the bracket 21. The driving gear 23 is fixedly connected to the lower rotary knife holder 25, and the driven gear 24 is coaxially fixedly connected to the upper rotary knife holder 25. The driving gear 23 is meshed with the driven gear 24, and the motor shaft of the shearing motor 22 is coaxially fixedly connected to the driving gear 23. Figure 4 and Figure 5 Each rotary blade holder 25 is equipped with a shear head 26, with the upper and lower shear heads 26 facing each other in a forward-facing position forming the shearing station. The shearing motor 22 drives the driving gear 23 and the driven gear 24 to rotate, and the two rotary blade holders 25 drive their respective shear heads 26 to rotate synchronously in opposite directions. When the upper and lower shear heads 26 rotate to the shearing station, their blades press against the steel plate, achieving shearing. The shearing mechanism 2 of this embodiment utilizes a rotary shearing structure, and the shearing length of the steel plate can be determined based on the rotational speed of the rotary blade holder 25 and the conveying speed of the steel plate conveyor line 1.

[0031] See also Figures 2 to 4 In this embodiment, there are two blade cleaning mechanisms 3, each blade cleaning mechanism 3 corresponds to a scissor head 26 and is used to clean the debris of the scissor head 26. Figure 3 The cutter head cleaning mechanism 3 includes a cleaning cover 31, a cutter head cleaning brush 32, an automatic switch 34, a switch block 35 and a return spring 36. The cleaning cover 31 is fixed to the bracket 21 and is arranged outside the rotary cutter holder 25, forming an annular cleaning chamber 33 between the two. Figure 7 The cleaning cover 31 is provided with a cutter head outlet 311 on the side facing the steel plate conveying line 1 for the scissor head 26 to extend out. Figure 4 and Figure 5The blade cleaning brush 32 is located in the annular cleaning chamber 33 and is used to clean the debris on the scissor head 26. There are two automatic switches 34, one located at the left and right openings of the annular cleaning chamber 33. A slot 312 is opened on the inner wall of the cleaning cover 31, and a reset spring 36 is built in. One end of the automatic switch 34 is inserted into the slot 312 and contacts the reset spring 36, and the other end extends toward one side of the rotary blade holder 25, closing its corresponding opening under normal conditions. Figure 2 and Figure 5 , there are two switch blocks 35, which are mounted on the rotary tool holder 25 and are respectively located on both sides of the length direction of the scissors head 26. Each switch block 35 is an arc-shaped plate.

[0032] After the scissor head 26 shears the steel plate, the scissor head 26 and the switch block 35 rotate with the rotary blade holder 25. The curved surface of the switch block 35 squeezes the automatic switch 34 and retracts it into the slot 312, thereby opening the right side opening of the annular cleaning chamber 33. The scissor head 26 rotates from the right side opening into the annular cleaning chamber 33. The switch block 35 no longer squeezes the automatic switch 34, and the reset spring 36 drives the automatic switch 34 to reset. At this time, the annular cleaning chamber 33 is once again sealed. When the scissor head 26 rotates to the blade cleaning brush 32, the blade cleaning brush 32 cleans the debris on the scissor head 26. This cleaning method uses the rotation of the scissor head 26 to cause relative movement between the scissor head 26 and the blade cleaning brush 32 to achieve debris cleaning. That is, the blade cleaning brush 32 performs passive cleaning, and the cleaned debris is collected in the annular cleaning chamber 33.

[0033] It can be seen that by designing the cleaning cover 31 and the blade cleaning brush 32, the debris on the scissor head 26 can be immediately cleaned after the steel plate is cut, realizing "one cut, one clean", ensuring that the efficiency of the scissor head 26 is not affected during the next cutting. At the same time, during the rotation of the rotary blade holder 25, the blade cleaning mechanism 3 can directly clean the scissor head 26 debris and complete the collection without stopping the shear mechanism 2. In addition, the opening and closing of the annular cleaning chamber 33 is achieved by the automatic switch 34, the switch block 35 and the return spring 36. The switch block 35 triggers the automatic switch 34 to open the opening with the help of the rotational force of the rotary blade holder 25, and the return spring 36 drives it to close the opening. The entire process can be opened and closed without the need for additional power, which not only simplifies the structural design but also reduces the control process.

[0034] In order to avoid the scissor head 26 having a poor cleaning effect due to only one side being cleaned by the head cleaning brush 32. Figure 2 、 Figure 3 、 Figure 4 and Figure 5The cutter head cleaning mechanism 3 of this embodiment also includes a cutter head follower assembly 37 and a brush head reciprocating assembly 38 installed in the annular mounting cavity. The cutter head follower assembly 37 can drive the cutter head cleaning brush 32 to move synchronously with the scissor head 26, so that the cutter head cleaning brush 32 always fits the blade of the scissor head 26; the brush head reciprocating assembly 38 can drive the cutter head cleaning brush 32 to move back and forth along the blade of the scissor head 26, so that the cutter head cleaning brush 32 brushes away debris on both sides of the blade of the scissor head 26. This design changes the cutter head cleaning brush 32 from passive cleaning to active cleaning. The cutter head cleaning brush 32 can continuously clean the blade of the scissor head 26 while the scissor head 26 is rotating, thereby extending the cleaning time of the scissor head 26 and improving the cleaning level of both sides of the blade of the scissor head 26.

[0035] For details, see Figure 2 and Figure 3 In this embodiment, two sets of cutter head follower assemblies 37 are provided, and are symmetrically mounted on both sides of the axial direction of the rotary tool holder 25. The cutter head follower assemblies 37 are fixedly supported by the bracket 21. Figure 2 , one of which is an active drive assembly, including a follower motor 371, a follower gear 372, an arc guide rail 373 and a Bowden bead chain 374. Figure 3 , and the other group is a passive drive component, which only includes an arc-shaped guide rail 373 and a Bowden bead chain 374. An arc-shaped annular groove 3731 is provided on the arc-shaped guide rail 373. The active drive component is provided with two follower gears 372, which are respectively mounted on both sides of the arc-shaped guide rail 373 and can rotate. The Bowden bead chain 374 is mounted on these two follower gears 372 and embedded in the arc-shaped annular groove 3731, and can move along the groove. The chain beads of the Bowden bead chain 374 are designed as rollers. The two ends of the cutter head cleaning brush 32 are respectively connected to the rollers of the Bowden bead chain 374 of the two sets of cutter head follower assemblies 37. The active drive component is equipped with two follower motors 371, which respectively drive the two follower gears 372 on their sides. When the scissor head 26 rotates until it contacts the blade cleaning brush 32, the two follower motors 371 start synchronously, driving the Bowden bead chain 374 through their respective follower gears 372 to move within the annular groove 3731. The blade cleaning brush 32 moves accordingly, maintaining constant contact and synchronous movement with the rotating scissor head 26. This design prolongs the cleaning time of the blade cleaning brush 32 on the blade of the scissor head 26, improving cleaning efficiency. After the scissor head 26 is cleared of debris, the two follower motors 371 rotate synchronously in the opposite direction, driving the Bowden bead chain 374 in the opposite direction, returning the blade cleaning brush 32 to its original position and preparing for the next cleaning operation.

[0036] See also Figure 2The brush head reciprocating assembly 38 of this embodiment includes a guide post 381, an arcuate rack 382, ​​a return spring 383, and an extrusion post 384. The ends of the guide post 381 are respectively connected to the rollers in the two cutter head follower assemblies 37. The cutter head cleaning brush 32 is slidably mounted on the guide post 381. The return spring 383 connects the cutter head cleaning brush 32 and the guide post 381 to reset the cutter head cleaning brush 32. The arcuate rack 382 is mounted on the arcuate guide rail 373, and the extrusion post 384 is mounted on the end of the cutter head cleaning brush 32 closest to the arcuate rack 382. When the cutter head follower assembly 37 drives the guide post 381 to follow the movement of the scissor head 26, the extrusion post 384 contacts the tooth surface of the arcuate rack 382 and moves along the tooth row direction. As the extrusion post 384 slides from the tooth root toward the tooth tip, the tooth tip pushes the extrusion post 384 outward. When the extrusion post slides back from the tooth tip to the tooth root, the return spring 383 pulls the extrusion post 384 back into place. This reciprocating motion drives the blade cleaning brush 32 to clean the blades of the scissor head 26 back and forth. This design cleverly utilizes the movement of the blade follower assembly 37, the toothed structure of the arcuate rack 382, ​​and the return spring 383 to drive the blade cleaning brush 32 without requiring a separate drive source.

[0037] See also Figure 1 and Figure 7 In this embodiment, the cleaning cover 31 is provided with a suction port 313 connected to the annular cleaning chamber 33. Figure 5 The automatic switch 34 is provided with an air blowing port 341 along its length. After the scissor head 26 has cleaned the debris, air is supplied to the air blowing port 341 of the automatic switch 34 to blow up the debris that has fallen on it; at the same time, the suction port 313 is activated to extract air and remove the debris in the annular cleaning chamber 33. Since some debris may fall on the automatic switch 34 during the cleaning process, and the automatic switch 34 is located far away from the suction port 313, it is difficult to effectively remove it by suction alone. Blowing up the debris through the air blowing port 341 can ensure that it is captured by the suction system, thereby preventing the debris from falling from the opening of the annular cleaning chamber 33 to the outside of the cleaning cover 31 when the automatic switch 34 is turned on.

[0038] See also Figure 4 、 Figure 5 and Figure 6 The steel plate cleaning mechanism 5 of this embodiment comprises two steel plate cleaning units symmetrically arranged on the upper and lower sides of the steel plate conveying line 1. Figure 6 Each steel plate cleaning unit consists of a cleaning chamber 51 and a steel plate cleaning brush 52 mounted within it. The cleaning chamber 51 has an opening at the bottom, through which the steel plate cleaning brush 52 extends and contacts the steel plate surface. As the steel plate is conveyed, surface friction forces the brush 52 to rotate passively, cleaning the surface.

[0039] See also Figure 2 and Figure 3The steel plate acceleration mechanism 4 of this embodiment is mainly composed of a belt conveyor 41, an air hood 42, an acceleration cylinder 43 and a return spring 44. The belt conveyor 41 is located above the first belt conveyor mechanism 11 behind the shearing mechanism 2. The air hood 42 is arranged on the inner side of the conveyor belt of the belt conveyor 41, and together with the conveyor belt, it forms an acceleration air cavity 45. Multiple acceleration cylinders 43 are fixed on the conveyor belt along the circumferential direction of the conveyor belt. The conveyor belt has through holes at the positions corresponding to the acceleration cylinders 43, which are connected to the inner cavity of the acceleration cylinder 43. The return spring 44 is built into the acceleration cylinder 43 and is used to drive the piston rod to reset.

[0040] Because the belt conveyor 11 behind the shearing mechanism 2 is lower than the one in front, there's a certain gap between the two when the cut steel sheet reaches the first belt conveyor 11 behind. When the front end of the steel sheet passes over the belt conveyor 11, the system inflates the acceleration chamber 45. The compressed gas enters the acceleration cylinder 43 through a through hole, pushing its piston rod out and rapidly pressing the steel sheet against the belt of the first belt conveyor 11 behind. This pressurization significantly increases the normal pressure between the steel sheet and the belt, significantly increasing the maximum static friction between them. This ensures that the steel sheet and the belt conveyor 11 reach a relative rest position instantaneously, effectively preventing relative slippage caused by speed differences. When the acceleration cylinder 43, along with the conveyor belt of the belt conveyor 41, rotates out of the coverage area of ​​the acceleration chamber 45, the gas in the acceleration cylinder 43 is released, and the piston rod, activated by the return spring 44, fully retracts to its initial position. The steel sheet then continues to move forward, driven by the belt conveyor 11, while the steel sheet cleaning brush 52 cleans away metal debris from its trailing end.

[0041] It can be seen that the steel plate acceleration mechanism 4 can instantly press the steel plate against the conveyor belt through the coordinated design of the acceleration cylinder 43 and the acceleration air chamber 45. The increase in normal force caused by the pressurization directly raises the maximum static friction threshold, allowing the steel plate and the conveyor belt to move rapidly and synchronously. This solves the problem of debris scratching the surface of the steel plate due to relative sliding when the low-speed cut steel plate falls onto the high-speed belt. Once the steel plate and the belt are synchronized, the acceleration cylinder 43 immediately disengages the acceleration air chamber 45 and resets under the rebound force of the return spring 44, preparing for the next acceleration operation of cutting the steel plate.

[0042] In order to avoid the front and rear ends of the steel plate from swinging up and down when the acceleration cylinder 43 squeezes the steel plate, the rear end of the steel plate may contact the shear head 26 for the second time, resulting in the possibility of damage to the rear end of the steel plate. Figure 4 and Figure 5The shearing mechanism 2 of this embodiment is equipped with an anti-sway mechanism 6 at the rear side of the shearing station. This mechanism primarily consists of a drive block 61, a slider 62, an elastic member 63, and an anti-sway roller 64. Two drive blocks 61 are provided, one mounted on either side of the shearing head 26 and supported by the rotary blade 25. Four sliders 62 are provided, divided into two equal groups. The two groups of sliders 62 are slidably mounted on the bracket 21, with the two sliders 62 in each group positioned vertically opposite each other. Two anti-sway rollers 64 are provided, each rotatably mounted on two laterally opposing sliders 62. Each slider 62 corresponds to an elastic member 63. One end of the elastic member 63 is connected to the bracket 21, and the other end is connected to the slider 62, which serves to reset the slider 62. After the steel plate is cut, the rotary blade 25 drives the shearing head to rotate, squeezing the slider 62 through the drive block 61. This causes the anti-sway roller 64 to move away from the shearing head 26, preventing interference between the anti-sway roller 64 and the shearing head 26. At the same time, the steel plate is inserted between the two anti-sway rollers 64 under the conveyance of the steel plate conveyor line 1. When the acceleration cylinder 43 squeezes the steel plate onto the belt conveyor mechanism 11, the tail end of the steel plate is located between the two anti-sway rollers 64 and is restrained by them, preventing the up and down swinging of the tail end of the steel plate from interfering with the scissor head 26. At the same time, it also prevents the swinging of the tail end from causing debris on it to be thrown to other parts of the equipment, preventing it from being cleaned.

[0043] In order to ensure that the steel plate can be conveyed by the belt conveyor mechanism 11 in front of the shearing mechanism 2, its front end will not bend down to the belt surface of the belt conveyor mechanism 11 behind the shearing mechanism 2, see Figure 4 and Figure 5 An electromagnet 314 is provided at the cutter head outlet 311 of the cleaning cover 31 and at the rear side of the shearing station. When the front end of the steel plate passes a certain distance from the shearing station, the electromagnet 314 is energized and generates an adsorption force on the steel plate. This adsorption force can prevent the front end of the steel plate from bending down to the belt surface of the belt conveyor mechanism 11 at the rear, and at the same time, it will not be adsorbed onto the electromagnet 314, thus avoiding sliding friction between the electromagnet 314 and the steel plate. Since the electromagnet 314 is turned on only after the front end of the steel plate passes a certain distance from the shearing station, the electromagnet 314 will not adsorb the debris at the front end of the steel plate to the electromagnet 314 or will only adsorb a small amount to ensure the adsorption force of the electromagnet 314. At the same time, the debris at the front end of the steel plate is left to be cleaned by the steel plate cleaning mechanism 5 at the rear side to achieve debris collection.

[0044] The working process of the present invention is further described below to further demonstrate the working principle and advantages of the present invention: The shearing motor 22 drives the driving gear 23 and the driven gear 24 to rotate, and the two rotary tool holders 25 drive the connected shear heads 26 to rotate synchronously in opposite directions. At the same time, the steel plate conveyor line 1 delivers the steel plate, which is inserted between the two anti-sway rollers 64. When the part of the steel plate to be sheared is delivered to the shearing station of the shearing mechanism 2, the upper and lower shear heads 26 also rotate to the shearing station and squeeze the steel plate with their blades to perform the shearing operation.

[0045] After the scissor head 26 shears the steel plate, the scissor head 26 and the switch block 35 rotate with the rotary tool holder 25, and the arc-shaped surface of the switch block 35 squeezes the automatic switch 34 and retracts it into the slot 312, so that the right opening of the annular cleaning chamber 33 is opened. The scissor head 26 rotates from the right opening into the annular cleaning chamber 33, and the switch block 35 no longer squeezes the automatic switch 34. The reset spring 36 drives the automatic switch 34 to reset. At this time, the annular cleaning chamber 33 is in a sealed state again.

[0046] When the scissor head 26 rotates to the blade cleaning brush 32, the two follower motors 371 start synchronously, driving the Bowden bead chain 374 through their respective follower gears 372 to move within the annular groove 3731. The blade cleaning brush 32 moves accordingly, maintaining constant contact with the rotating scissor head 26 and moving synchronously. The extrusion column 384 contacts the tooth surface of the arc-shaped rack 382 and moves along the tooth row. When the extrusion column 384 slides from the root of the tooth to the tip of the tooth, the tip of the tooth pushes the extrusion column 384 outward; when it slides back from the tip of the tooth to the root of the tooth, the return spring 383 pulls the extrusion column 384 back to its original position. This reciprocating motion drives the blade cleaning brush 32 to clean back and forth along the blade of the scissor head 26. This prolongs the cleaning time of the scissor head 26 and improves the cleaning level of the front and back sides of the blade of the scissor head 26.

[0047] When the scissor head 26 rotates to the left opening of the annular cleaning chamber 33, the arc-shaped surface of the switch block 35 squeezes the automatic switch 34 on the left side to retract into the slot 312, so that the left opening of the annular cleaning chamber 33 is opened. The scissor head 26 rotates from the left opening to the cutter head outlet 311 side of the cleaning cover 31, and the switch block 35 no longer squeezes the automatic switch 34 on the left side. The reset spring 36 drives the automatic switch 34 on the left side to reset, and the annular cleaning chamber 33 is in a sealed state again.

[0048] When the steel plate is conveyed to the first belt conveyor mechanism 11 at the rear, there is a certain distance between the two. When the front end of the steel plate passes over the belt conveyor mechanism 11, the electromagnet is energized and generates an adsorption force on the steel plate. This adsorption force can prevent the front end of the steel plate from bending down to the belt surface of the belt conveyor mechanism 11 at the rear. The system inflates the acceleration air chamber 45. The compressed gas enters the acceleration cylinder 43 through the through hole, pushing its piston rod out, and quickly pressing the steel plate against the belt of the first belt conveyor mechanism 11 at the rear. This pressurization action significantly increases the normal pressure between the steel plate and the belt, thereby greatly increasing the maximum static friction between the two, ensuring that the steel plate and the belt conveyor mechanism 11 reach a relative static state instantly. When the acceleration cylinder 43 rotates with the conveyor belt of the belt conveyor 41 and leaves the coverage area of ​​the acceleration air chamber 45, the gas in the acceleration cylinder 43 is released, and the piston rod is fully retracted to its initial position under the action of the return spring 44. Subsequently, the steel plate is driven to move forward by the belt conveyor mechanism 11 , and the steel plate cleaning brush 52 cleans the metal debris at the front and rear ends thereof.

[0049] The cleaning of the metal chips on the steel plate and the shears head 26 is thus completed.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A steel coil flying shear, comprising a steel plate conveying line and a shearing mechanism arranged on the steel plate conveying line for shearing the steel plate; the shearing mechanism is provided with two rotary knife holders symmetrically arranged on the upper and lower sides of the steel plate conveying line, each rotary knife holder being equipped with a shear head; characterized in that: The cleaning brush is provided on the side of the cleaning cover facing the steel plate conveying line for the scissors head to extend out of. The cleaning brush is arranged in the annular cleaning chamber for cleaning the debris on the scissors head. The automatic switch is provided with two openings on the left and right sides of the annular cleaning chamber for closing the openings. The switch block is installed on the rotary tool holder. The reset spring connects the automatic switch and the cleaning cover. The steel plate conveying line conveys the steel plate, and the upper and lower scissors heads continue to rotate with the rotary tool holder after shearing the steel plate. The switch block triggers the automatic switch to open the corresponding opening, and the scissors head immediately enters the annular cleaning chamber. The reset spring drives the automatic switch to reset, and the cleaning brush removes the debris on the scissors head to collect the debris into the annular cleaning chamber.

2. The steel coil flying shear according to claim 1, characterized in that: The cutter head cleaning mechanism also includes a cutter head follower assembly and a brush head reciprocating assembly installed in the annular mounting cavity. The cutter head follower assembly can drive the cutter head cleaning brush to move synchronously with the scissors head so that the cutter head cleaning brush always fits the blade of the scissors head; the brush head reciprocating assembly can drive the cutter head cleaning brush to move back and forth along the blade of the scissors head so that the cutter head cleaning brush brushes off debris on the front and back sides of the scissors head blade.

3. The steel coil flying shear according to claim 2, characterized in that: The cutter head follower assembly includes a follower motor, a follower gear, an annular slide and a Bowden bead chain. There are two follower gears and they are respectively installed at the two ends of the annular slide. The Bowden bead chain is embedded in the annular slide and is mounted on the two follower gears. The follower motor is driven and connected to the follower gear, and the cutter head cleaning brush is connected to the Bowden bead chain. When the follower motor drives the Bowden bead chain to move along the annular slide through the follower gear, the cutter head cleaning brush moves with the Bowden bead chain, so that the cutter head cleaning brush moves synchronously with the scissors head.

4. The steel coil flying shear according to claim 2, characterized in that: The brush head reciprocating assembly includes a guide column, an arc-shaped rack, a return spring and an extrusion column. The guide column is connected to the cutter head follower assembly, the cutter head cleaning brush is sleeved on the guide column and can slide, the return spring connects the cutter head cleaning brush and the guide column, the extrusion column is installed on the cutter head cleaning brush, and the arc-shaped rack is located on one side of the cutter head cleaning brush; when the cutter head follower assembly drives the guide column to follow the movement of the scissors head, the extrusion column contacts the tooth surface of the arc-shaped rack and moves along the arrangement direction of the teeth. When the extrusion column moves from the root of the tooth of the arc-shaped rack to the tip of the tooth, the tooth tip pushes the extrusion column to move outward. When the extrusion column moves from the tip of the tooth of the arc-shaped rack to the root of the tooth, the return spring pulls the extrusion column to reset, and so on alternately, so that the extrusion column drives the cutter head cleaning brush to move back and forth along the blade of the scissors head.

5. The steel coil flying shear according to claim 1, characterized in that: The cleaning cover is provided with a suction port connected to the annular cleaning chamber, and the automatic switch is provided with an air blowing port. Air is supplied to the air blowing port of the automatic switch to blow away the debris falling on the automatic switch, and the suction port draws air to remove the debris in the annular cleaning chamber.

6. The steel coil flying shear according to claim 1, characterized in that: A steel plate cleaning mechanism is provided on the steel plate conveying line. After the shearing mechanism shears the steel plate, the steel plate cleaning mechanism cleans the debris on the steel plate to prevent the debris from scratching the steel plate.

7. The steel coil flying shear according to claim 6, characterized in that: The steel plate cleaning mechanism includes two steel plate cleaning units symmetrically arranged on the upper and lower sides of the steel plate conveying line. Each steel plate cleaning unit includes a cleaning chamber and a steel plate cleaning brush installed in the cleaning chamber. The cleaning chamber is provided with an opening on the side facing the steel plate conveying line. The steel plate cleaning brush extends out of the opening of the cleaning chamber and contacts the steel plate to clean the surface of the steel plate during the steel plate conveying process.

8. The steel coil flying shear according to claim 1, characterized in that: The steel plate conveying line includes multiple belt conveying mechanisms arranged in sequence along the traveling direction. The belt conveying mechanism located behind the shearing mechanism accelerates the conveying to form a gap between the cut steel plate and the mother plate; a steel plate acceleration mechanism is provided at the first belt conveying mechanism behind the shearing mechanism; when the steel plate is sheared, the steel plate acceleration mechanism increases the traveling speed of the cut steel plate so that it keeps synchronous operation with the first belt conveying mechanism behind the shearing mechanism.

9. The steel coil flying shear according to claim 8, characterized in that: The height of the belt conveyor mechanism located behind the shearing mechanism is lower than that of the belt conveyor mechanism in front; the steel plate acceleration mechanism includes a belt conveyor 41, an acceleration air cavity 45 and an acceleration cylinder. The acceleration air cavity 45 is arranged in the conveyor belt of the belt conveyor 41. There are multiple acceleration cylinders and they are fixed to the conveyor belt along the circumferential direction of the conveyor belt. A through hole communicating with the inner cavity of the acceleration cylinder is opened at the position corresponding to the acceleration cylinder on the conveyor belt; when the acceleration cylinder moves with the conveyor belt to the position of the acceleration air cavity 45, the acceleration air cavity 45 inflates the acceleration cylinder through the through hole, and the piston rod of the acceleration cylinder extends and squeezes the cut steel plate onto the first belt conveyor mechanism behind the shearing mechanism to increase the maximum static friction between the cut steel plate and the belt conveyor mechanism.

10. The steel coil flying shear according to claim 9, characterized in that: An electromagnet is provided at the cutter head outlet of the cleaning cover and at the rear side of the shearing station.

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