Automatic pre-bending device for steel plate delivery

Abstract

This invention provides an automatic pre-bending device for steel plate delivery, relating to the technical field of steel plate pre-processing equipment. It includes a dual-active roller delivery mechanism comprising two actively arranged roller delivery assemblies connected by a vertical drive mechanism; a support beam laterally arranged above the upper active roller delivery assembly and equipped with a transverse drive mechanism; pre-bending mechanisms distributed on the left and right sides of the dual-active roller delivery mechanism, with each pre-bending mechanism movably mounted on the support beam and connected to the transverse drive mechanism. Each pre-bending mechanism performs upward arc-shaped pre-bending of the strip's edges via double-roller extrusion; an auxiliary pressing assembly is located on the feed side of the dual-active roller delivery mechanism; and a deviation correction assembly is installed on each of the two pre-bending mechanisms. The automatic pre-bending device for steel plate delivery provided by this invention, through the cooperation of various components, improves the engagement stability between the rollers and the strip, avoids the splintering defect at the weld seam after small-diameter steel pipe forming, and effectively prevents strip deviation.

Description

Technical Field

[0001] This invention belongs to the technical field of steel plate pre-processing equipment, specifically, it relates to an automatic pre-bending device for steel plate delivery. Background Technology

[0002] In steel plate processing, especially in the production of small-diameter steel pipes, the strip delivery process is a crucial step connecting subsequent forming and welding processes. Its delivery stability directly impacts product processing quality and production efficiency. Currently, most strip delivery devices used in the industry employ traditional structural designs, which are prone to frequent malfunctions affecting production progress and product quality during long-term continuous production.

[0003] Firstly, during strip delivery, the meshing and adhesion between the rollers and the strip is crucial for ensuring delivery stability. Existing strip delivery devices cannot dynamically adjust the meshing force between the rollers and the strip based on the strip's thickness and surface condition. When the strip surface has an oxide layer, oil stains, or slight thickness variations or a narrow width, the contact pressure between the rollers and the strip is insufficient, easily leading to inadequate meshing and clamping force, which in turn causes strip slippage. Strip slippage not only results in uneven delivery speed and feeding accuracy deviations, affecting the accuracy of subsequent forming and cutting processes, but also causes scratches on the strip surface, accelerates roller wear, increases equipment maintenance costs and downtime, and severely impacts production continuity.

[0004] Secondly, in the production process of small-diameter steel pipes, the strip steel is directly fed into the forming mold cavity after being conveyed by the delivery device for bending and forming, and then welded together. Because the strip steel remains straight before entering the forming mold cavity, there is a significant difference in stress distribution between the two sides and the central area, and there is no pre-shaping guidance. During the forming and joining process, the two sides of the strip steel need to be bent and joined quickly. At this time, the residual stress on the edges cannot be released in time, easily leading to uneven stress. This results in defects such as outward warping and protrusion of the edges at the weld after welding. This defect is a structural defect that cannot be completely eliminated by subsequent grinding and shaping processes. It seriously affects the appearance quality and structural strength of the small-diameter steel pipe, leading to product downgrading, rework, or even scrapping, significantly reducing production economic efficiency.

[0005] Furthermore, during continuous high-speed delivery of strip steel, deviation is a very common and difficult-to-control problem. In actual production, due to various factors such as uneven thickness of the strip steel itself, fluctuations in uncoiling tension, deviations in the installation accuracy of the roll assembly, and vibrations of workshop equipment, the strip steel is prone to deviating from the preset delivery centerline, resulting in unilateral offset or overall deviation, which affects production efficiency and product quality.

[0006] Therefore, there is an urgent need for an automatic pre-bending device for steel plate delivery that can improve the engagement stability between the roller and the strip, avoid the sputtering defect at the weld after the small-diameter steel pipe is formed, and effectively prevent the strip from deviating. Summary of the Invention

[0007] The purpose of this invention is to provide an automatic pre-bending device for steel plate delivery, which solves the technical problems of insufficient engagement and slippage between the roller and the strip during the strip delivery process, outward warping of the weld plate edge after the small-diameter steel pipe is formed, and strip deviation in the related technology.

[0008] At least one embodiment of the present invention provides an automatic pre-bending device for steel plate delivery, comprising: The dual active roller delivery mechanism includes two active roller delivery components arranged vertically and vertically. The two active roller delivery components are connected by vertical drive mechanisms symmetrically arranged on their left and right sides to drive them to move vertically relative to each other to adjust the distance and adapt to the strip steel. A support beam is arranged laterally above the active roller delivery assembly on the upper side. Vertical pillars are respectively set at the left and right ends of the bottom of the support beam, and a lateral drive mechanism is provided on the support beam. Two pre-bending mechanisms are symmetrically arranged and distributed on the left and right sides of the double active roller delivery mechanism. The two pre-bending mechanisms are respectively movably mounted on the support beam and connected to the transverse drive mechanism to synchronously move closer to or further away from the two sides of the strip. The two pre-bending mechanisms respectively perform upward arc-shaped pre-bending on the two sides of the strip by double roller extrusion. An auxiliary pressing and feeding assembly is provided on the feed side of the dual active roller delivery mechanism to assist in pressing the strip steel. Two correction components are symmetrically arranged and respectively installed on the two pre-bending mechanisms to cooperate with the pre-bending mechanisms to center and guide the strip steel.

[0009] According to an exemplary embodiment of this disclosure, the vertical drive mechanism includes: Two U-shaped connecting frames are provided and arranged symmetrically back and forth along the length of the active roller delivery assembly. Each U-shaped connecting frame includes a vertical plate and horizontal plates respectively provided at the upper and lower ends of the vertical plate facing the dual active roller delivery mechanism. A slide rail is vertically provided on the side wall of the vertical plate of the U-shaped connecting frame facing the dual active roller delivery mechanism. The lower horizontal plate of the U-shaped connecting frame is fixedly connected to the outer wall of the frame of the lower active roller delivery assembly. A lifting plate is horizontally arranged between the two horizontal plates of each U-shaped connecting frame. One end of the lifting plate is slidably mounted on the slide rail of the vertical plate of the corresponding U-shaped connecting frame, and the other end is fixedly connected to the outer wall of the frame of the upper active roller delivery assembly. A vertical drive cylinder is installed on the upper horizontal plate of each of the U-shaped connecting frames. The output end of the vertical drive cylinder moves through the upper horizontal plate of the corresponding U-shaped connecting frame and connects to the lifting plate to adjust the height of the transport space between the two active roller delivery assemblies.

[0010] According to an exemplary embodiment of this disclosure, the support beam has an assembly groove arranged along its length on the side near the feed side of the dual active roller delivery mechanism; the transverse drive mechanism includes a drive motor disposed at one end of the support beam and a bidirectional lead screw with positive and negative threads respectively at its left and right ends. The bidirectional lead screw is arranged along the length of the support beam and rotatably assembled in the assembly groove. The output end of the drive motor movably penetrates one side wall of the support beam and is connected to the bidirectional lead screw located in the assembly groove. Nut sleeves with threaded engagement are respectively fitted on the left and right ends of the bidirectional lead screw.

[0011] According to an exemplary embodiment of this disclosure, the pre-bending mechanism includes: A U-shaped mounting bracket is disposed on the left or right side of the dual active roller delivery mechanism. The U-shaped mounting bracket includes a vertical web and wing plates that are respectively horizontally disposed at the upper and lower ends of the web facing the dual active roller delivery mechanism. A horizontal connecting plate is provided on the top of the upper wing plate of the U-shaped mounting bracket. One end of the horizontal connecting plate is fixedly connected to the top of the upper wing plate of the U-shaped mounting bracket, and the other end extends into the assembly groove of the support beam and is connected to the nut sleeve on the corresponding side of the transverse drive mechanism. The bottom of the end of the horizontal connecting plate that extends into the assembly groove is slidably connected to the assembly groove. Two U-shaped assembly frames are provided, arranged symmetrically vertically with their openings facing each other. Each U-shaped assembly frame includes a horizontal main plate and vertical plates respectively arranged at the left and right ends of the main plate. The vertical plate of the upper U-shaped assembly frame away from the dual active roller delivery mechanism is vertically slidably connected to the web of the U-shaped mounting frame. The main plate of the upper U-shaped assembly frame is connected to the upper wing plate of the U-shaped mounting frame through a vertical pushing assembly. The main plate of the lower U-shaped assembly frame is fixedly connected to the lower wing plate of the U-shaped mounting frame. Two pre-bending pressure rollers are arranged correspondingly at the top and bottom. The two pre-bending pressure rollers are respectively installed on the corresponding U-shaped assembly frame, so as to be located on the upper and lower sides of the strip edge. One end of the two pre-bending pressure rollers is rotatably connected to the vertical plate on the side of the corresponding U-shaped assembly frame away from the double active roller delivery mechanism. The other ends of the two pre-bending pressure rollers can cooperate to form an upwardly curved arc extrusion channel.

[0012] According to an exemplary embodiment of this disclosure, the diameters of the two pre-bending rollers on each pre-bending mechanism are each greater than the height of the upright plate on the side of the U-shaped mounting frame closest to the dual active roller delivery mechanism on which they are mounted; the sidewall of the upper pre-bending roller adopts an outwardly convex arc surface, and the sidewall of the lower pre-bending roller adopts an inwardly concave arc surface, and the arc surfaces of the two cooperate to form an arc-shaped extrusion channel adapted to the upward pre-bending curvature of the strip edge; the pre-bending roller is connected to the upright plate on the side of the corresponding U-shaped mounting frame away from the dual active roller delivery mechanism by a detachable rotating support.

[0013] According to an exemplary embodiment of this disclosure, the detachable rotating support includes: The base is disposed on the upright plate on the side of the U-shaped assembly frame away from the dual active roller delivery mechanism; The rotating shaft is rotatably connected at one end to the center of the base via a bearing. A fixed cone is fixedly connected to the center of the other end of the rotating shaft via a horizontally set main guide rod. A movable cone, symmetrically arranged with the fixed cone, is slidably sleeved on the main guide rod, and the large diameter ends of the fixed cone and the movable cone are opposite each other. The movable cone can move horizontally relative to the fixed cone along the main guide rod. The mounting ring has one end fixedly connected to the end of the pre-bending pressure roller, and the other end of the mounting ring can be loosely fitted around the outside of the fixed cone and the movable cone and fitted with a clearance. Two through mounting holes are radially symmetrically opened on the ring wall of the mounting ring. Two connecting rods are arranged radially symmetrically. One end of each connecting rod is provided with a handle, and the other end of each rod passes through two mounting holes on the mounting ring and is provided with a wedge-shaped limiting block adapted to the fixed cone and the movable cone. The inner ring wall of the mounting ring is provided with a groove communicating with the two mounting holes. Each connecting rod is fitted with a first return spring. The two ends of the first return spring abut against the wedge-shaped limiting block and the end of the mounting hole, respectively. When the connecting rod is pulled outward to compress the first return spring, the wedge-shaped limiting block can be placed in the groove of the mounting ring. Four auxiliary guide rods are arranged horizontally and symmetrically in pairs. One end of each auxiliary guide rod is fixedly connected to the fixed cone, and the other end slides through the movable cone and is fixedly connected to the end face of the rotating shaft. The four auxiliary guide rods are arranged in pairs, and the two auxiliary guide rods in each pair are located on both sides of the corresponding wedge-shaped limiting block. When the connecting rod is released to reset the first reset spring, the wedge-shaped limiting block can move radially within the groove of the mounting ring, pushing the movable cone away from the fixed cone, and then entering between the corresponding two auxiliary guide rods for limiting.

[0014] According to an exemplary embodiment of this disclosure, the vertical jacking assembly includes: A horizontal drive cylinder is disposed on the upper part of the web of the U-shaped mounting bracket; The guide rail is arranged at its bottom along the length of the upper wing plate of the U-shaped mounting bracket; A wedge-shaped pusher is provided at the output end of the horizontal drive cylinder. The top of the wedge-shaped pusher is slidably connected to the guide rail via a slider. Its bottom surface slopes downward from one end near the dual active roller delivery mechanism to the other end. A moving groove is provided on the bottom surface of the wedge-shaped pusher along its inclined direction. A support plate is fixedly mounted on the web of the U-shaped mounting bracket and is horizontally positioned between the wedge-shaped push seat and the main board of the upper U-shaped assembly bracket. The upper end of the push rod is rotatably equipped with a roller that can roll in the moving groove of the wedge-shaped push seat, and the lower end of the push rod slides through the support plate and is fixedly connected to the main board of the upper U-shaped assembly frame. A stop plate is fixedly sleeved on the push rod and located below the roller. A second return spring is sleeved on the push rod, and the two ends of the second return spring abut against the stop plate and the support plate, respectively.

[0015] According to an exemplary embodiment of this disclosure, the auxiliary pressing assembly includes: There are two horizontal extension rods, which are symmetrically arranged on the left and right sides of the feed side frame of the upper active roller delivery assembly. Two levers are symmetrically arranged, and the two levers are respectively rotatably mounted on the corresponding extension rods along the strip conveying direction. The lever arm of the end of each lever near the feed side is greater than the lever arm of the other end. An auxiliary pressure roller is horizontally positioned between the two levers. The left and right ends of the auxiliary pressure roller are respectively connected to one end of the long lever arm of the two levers through vertically positioned connecting seats. The left and right ends of the auxiliary pressure roller are rotatably connected to the corresponding connecting seats. The counterweight rod is slidably mounted at one end of the short lever arm of the two levers at its bottom left and right ends respectively. The two end faces of the counterweight rod are respectively provided with transverse positioning grooves, and the inner wall of the positioning groove is provided with multiple conical grooves evenly distributed along its length. The positioning components are provided in two, and the two positioning components are respectively symmetrically arranged at one end of the short lever of the two levers to position the counterweight rod that moves at one end of the short lever of the two levers.

[0016] According to an exemplary embodiment of this disclosure, the positioning component includes: An L-shaped mounting plate is arranged along the length of one end of the short lever arm of the lever, and the horizontal plate of the L-shaped mounting plate is fixedly connected to the side wall of one end of the short lever arm of the lever. A positioning plate is arranged along the length of one end of the short lever arm and parallel to its side wall. The bottom of the positioning plate is slidably connected to the cross plate of the L-shaped mounting plate so as to slide relative to the side wall of one end of the short lever arm. The top of the positioning plate is provided with a positioning strip arranged along its length. The positioning strip is evenly distributed with a plurality of conical teeth that are adapted to the conical groove in the positioning groove. The control screw has a handle at one end, and the other end of the control screw is threaded through the vertical plate of the L-shaped mounting plate and rotatably connected to the positioning plate.

[0017] According to an exemplary embodiment of this disclosure, the correction component includes: An assembly rod is horizontally and perpendicular to the strip conveying direction and close to the feed side of the double active roller delivery mechanism. One end of the assembly rod is connected to the web sidewall of the U-shaped mounting frame. A spring rod, one end of which is connected to the other end of the assembly rod, extends close to the transport space between the two active roller delivery assemblies and has a V-shaped correction block at its end that adapts to the side edge of the strip.

[0018] The present invention provides an automatic pre-bending device for steel plate delivery. Through the coordinated operation of a dual active roller delivery mechanism, a pre-bending mechanism, an auxiliary pressing component, and a correction component, the various components work together in a coordinated manner to effectively improve the meshing and fit between the strip steel and the active roller delivery component, eliminating slippage during the conveying process. At the same time, the pre-bending mechanism completes regular pre-bending and shaping of the strip steel side, improving the defect of outward warping of the plate edge. The correction component constrains the travel trajectory of the strip steel to avoid the plate from deviating. This significantly improves the regularity of strip steel forming and the stability of the conveying operation, and can meet the actual production needs of continuous delivery and pre-bending processing of steel plates.

[0019] The vertical drive mechanism provided by this invention relies on the U-shaped connecting frame, lifting plate and vertical drive cylinder to form an adjustment structure, which can smoothly drive the upper and lower sets of active roller delivery components to complete the vertical relative movement, flexibly adjust the conveying distance between the rollers, adapt to the clamping and conveying operation of strip steel of different thicknesses, effectively increase the contact and clamping force between the rollers and the strip steel, effectively strengthen the biting and fastening effect, thereby avoiding the problem of strip steel delivery slippage, the overall sliding cooperation is smooth, and the adjustment operation is stable and reliable.

[0020] The support beam provided by this invention provides a stable foundation for the installation and sliding arrangement of the pre-bending mechanism. Combined with the transverse drive mechanism in the built-in assembly slot, and with the help of the bidirectional screw forward and reverse transmission characteristics, it can drive the pre-bending mechanisms on the left and right sides to move synchronously towards or away from each other. It can flexibly adjust the pre-bending operation position according to the actual width of the strip steel. The mechanism has excellent transmission synchronization and stable position adjustment, and can be adapted to the side pre-bending processing of various strip steel plates.

[0021] The pre-bending mechanism provided by this invention uses a U-shaped mounting frame as the main bearing base, and is equipped with pre-bending pressure rollers installed on U-shaped assembly frames arranged symmetrically on the upper and lower sides. It relies on the vertical pushing component to drive the upper pre-bending pressure roller to move vertically, flexibly adjust the relative distance between the two pre-bending pressure rollers, and adopts a double-roller clamping and extrusion operation mode to apply a pre-bending force to the side edge of the moving strip steel, and extrude the plate edge into an upwardly curved arc structure.

[0022] The upper pre-bending roller provided by this invention has an outwardly convex arc surface on its sidewall, while the lower pre-bending roller has an inwardly concave arc surface on its sidewall. Both can closely conform to the edge contour of the strip steel plate for extrusion operations. The arc-shaped extrusion channel between them can efficiently shape the side edge of the strip steel into an upward arc shape, eliminating the undesirable outward warping of the weld seam edge. The pre-bending roller is assembled and fixed with the aid of a detachable rotating support, and reliable rotation is achieved by relying on the support structure. At the same time, it is convenient for later disassembly, maintenance and replacement, effectively ensuring the consistency of forming quality in long-term pre-bending processing, and the side shaping effect is good.

[0023] The detachable rotating support provided by this invention relies on a quick-release and locking structure composed of a base, a rotating shaft, a cone, and a wedge-shaped limiting block. This structure enables convenient disassembly and assembly of the pre-bending pressure roller. The disassembly and assembly process requires no complicated tools, is simple and time-saving, and greatly reduces the difficulty of replacing the pre-bending pressure roller due to wear and tear and the daily maintenance of the equipment. At the same time, the locking and positioning are firm, which can ensure the structural stability of the pre-bending pressure roller during operation.

[0024] The vertical jacking assembly provided by this invention uses a horizontal drive cylinder to drive the wedge-shaped jacking seat to slide, and drives the jacking rod to rise and fall vertically through the inclined plane transmission. It can precisely control the pressing height and extrusion stroke of the upper pre-bending pressure roller, and can flexibly change the pre-bending force of the plate edge according to the processing requirements, and adjust the degree of arc bending as needed to meet the processing requirements of different forming standards. The transmission structure is responsive and has high stroke control accuracy.

[0025] The auxiliary pressing and feeding assembly provided by the present invention, which is set at the feeding position, relies on the lever structure to drive the auxiliary pressing and feeding roller to perform pre-pressing and limiting on the newly fed strip steel. It can smoothly guide the strip steel into the delivery and processing station, effectively suppress the swaying and deviation of the plate during the feeding stage, ensure the continuous and smooth feeding and conveying of the strip steel, stabilize the plate posture in advance, and lay a good foundation for subsequent biting conveying and side pre-bending.

[0026] The positioning component provided by this invention uses a control screw to drive the positioning plate to move. By using the engagement of the conical teeth with the conical groove of the positioning groove, the position of the counterweight rod can be accurately locked. By adjusting the distance from the counterweight rod to the fulcrum, the pressing force of the auxiliary pressing roller can be changed. It can adapt to strips of different thicknesses and tensions while stably maintaining the pressing force of the auxiliary pressing roller, and the locking and limiting are reliable.

[0027] The correction component provided by this invention uses an assembly rod and a spring rod to mount a V-shaped correction block, which can limit and guide the two sides of the strip steel. It can correct the lateral offset trend of the plate in a timely manner, ensure that the strip steel is kept in a centered state to complete delivery and pre-bending processing, and effectively prevent processing deviation and plate edge damage caused by deviation. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of an automatic pre-bending device for steel plate delivery provided in an embodiment of the present invention; Figure 2 This is an embodiment of the present invention. Figure 1 Assembly diagram of the central active roller delivery assembly and the vertical drive mechanism; Figure 3 This is an embodiment of the present invention. Figure 1 Assembly diagram of the pre-bending mechanism and the support beam; Figure 4 This is an embodiment of the present invention. Figure 3 Schematic diagram of the pre-bending mechanism; Figure 5 This is an embodiment of the present invention. Figure 4 Schematic diagram of the detachable rotating support; Figure 6 This is an embodiment of the present invention. Figure 1 Schematic diagram of the auxiliary pressure conveying assembly; Figure 7 This is an embodiment of the present invention. Figure 1 Enlarged view of point A in the middle; Figure 8 This is an embodiment of the present invention. Figure 3 Enlarged view of point B in the middle; In the diagram: 1. Active roller delivery assembly; 2. Vertical drive mechanism; 2-1. U-shaped connecting frame; 2-2. Lifting plate; 2-3. Vertical drive cylinder; 3. Support beam; 3-1. Assembly slot; 4. Horizontal drive mechanism; 5. Auxiliary pressing assembly; 5-1. Extension rod; 5-2. Lever; 5-3. Auxiliary pressing roller; 5-4. Connecting seat; 5-5. Counterweight rod; 5-6. Positioning groove; 5-7. L-shaped mounting plate; 5-8. Positioning plate; 5-9. Control screw; 6. Correction assembly; 6-1. Assembly rod; 6-2. Spring rod; 6-3. V-shaped correction block; 7. U-shaped mounting frame; 8. Horizontal connecting plate 9. U-shaped assembly frame; 10. Vertical jacking assembly; 10-1. Horizontal drive cylinder; 10-2. Guide rail; 10-3. Wedge-shaped jacking seat; 10-4. Slider; 10-5. Moving groove; 10-6. Support plate; 10-7. Jacking rod; 10-8. Roller; 10-9. Stop plate; 11. Pre-bending pressure roller; 12. Detachable rotating support; 12-1. Base; 12-2. Rotating shaft; 12-3. Fixed cone; 12-4. Main guide rod; 12-5. Movable cone; 12-6. Mounting ring; 12-7. Connecting rod; 12-8. Wedge-shaped limit block; 12-9. Secondary guide rod. Detailed Implementation

[0030] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure. For ease of understanding, the English abbreviations and related technical terms involved in the embodiments of this disclosure will be explained and described below.

[0031] It should be understood that the described embodiments are merely some, not all, of the embodiments disclosed herein. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0032] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The singular forms “a,” “the,” and “the” as used in the embodiments of this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0033] It should be understood that the term "and / or" used in this article is merely a way of describing the logical relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0034] Depending on the context, the word "if" as used here can be interpreted as "when" or "when" or "in response to determination" or "in response to detection." Similarly, depending on the context, the phrase "if determination" or "if detection (of the stated condition or event)" can be interpreted as "when determination" or "in response to determination" or "when detection (of the stated condition or event)" or "in response to detection (of the stated condition or event)."

[0035] It should be understood that the terms "first," "second," etc., used in this disclosure are for distinguishing purposes only and should not be construed as indicating or implying relative importance or order.

[0036] In the description of this disclosure, the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as a limitation of this disclosure.

[0037] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "joining" should be interpreted broadly, for example, they can be fixed connections, detachable connections, mating connections or integral connections; those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0038] like Figures 1-8As shown, an automatic pre-bending device for steel plate delivery according to an embodiment of the present invention is illustrated, including a dual active roller delivery mechanism, a support beam 3, two pre-bending mechanisms, an auxiliary pressing assembly 5, and two correction assemblies 6. The dual active roller delivery mechanism contains two active roller delivery assemblies 1, arranged vertically opposite each other. The two active roller delivery assemblies 1 are connected by vertical drive mechanisms 2 symmetrically arranged on their left and right sides. Driven by the vertical drive mechanisms 2, the two active roller delivery assemblies 1 can move vertically relative to each other to adjust the spacing, forming a transport space suitable for the steel strip. Each active roller delivery assembly 1 includes a frame, multiple active rollers evenly spaced along the length of the frame, and a control motor that drives the rotation of each active roller. The rotation direction of the active rollers of the upper active roller delivery assembly 1 is opposite to that of the active rollers of the lower active roller delivery assembly 1. By clamping the steel strip through the opposing rotation of the rollers, the plate is stably conveyed forward. A support beam 3 is arranged laterally above the upper active roller delivery assembly 1. Vertical supports are installed at the left and right ends of the bottom of the support beam 3, respectively, to support the support beam 3. A transverse drive mechanism 4 is installed on the support beam 3. Two pre-bending mechanisms are symmetrically distributed on the left and right sides of the dual active roller delivery mechanism, and are movably mounted on the support beam 3 and connected to the transverse drive mechanism 4. They are used to synchronously move closer to or further away from the edges of the strip. The two pre-bending mechanisms perform upward arc-shaped pre-bending of the edges of the strip by double-roller extrusion. An auxiliary pressing assembly 5 is located on the feed side of the dual active roller delivery mechanism to assist in pressing the strip. Two correction assemblies 6 are symmetrically arranged and installed on the two pre-bending mechanisms, thus following and cooperating with the pre-bending mechanisms to center and guide the strip under the drive of the transverse drive mechanism 4.

[0039] This embodiment provides an automatic pre-bending device for steel plate delivery. Through the coordinated operation of a dual active roller delivery mechanism, a pre-bending mechanism, an auxiliary pressing component 5, and a correction component 6, the various components work together to effectively improve the meshing and fit between the strip and the active roller delivery component 1, eliminating slippage during the conveying process. At the same time, the pre-bending mechanism completes regular pre-bending and shaping of the strip's sides, improving the edge warping defect. The correction component 6 constrains the strip's trajectory, preventing the plate from deviating. This significantly improves the regularity of the strip's forming and the stability of the conveying operation, meeting the actual production needs of continuous steel plate delivery and pre-bending processing.

[0040] refer to Figure 1 and Figure 2In one possible implementation, the vertical drive mechanisms 2 on both sides of the dual active roller delivery mechanism include two U-shaped connecting frames 2-1, two lifting plates 2-2, and two vertical drive cylinders 2-3. The two U-shaped connecting frames 2-1 are arranged symmetrically along the length of the active roller delivery assembly 1. Each U-shaped connecting frame 2-1 contains a vertical plate and two horizontal plates. The two horizontal plates are respectively located at the upper and lower ends of the vertical plate facing the dual active roller delivery mechanism. A vertical slide rail is provided on the side wall of the vertical plate of the U-shaped connecting frame 2-1 facing the dual active roller delivery mechanism. The lower horizontal plate of the U-shaped connecting frame 2-1 is fixedly connected to the outer wall of the frame of the lower active roller delivery assembly 1. Each lifting plate 2-2 is horizontally arranged between the two horizontal plates of each U-shaped connecting frame 2-1. One end of the lifting plate 2-2 is slidably mounted on the slide rail of the vertical plate of the corresponding U-shaped connecting frame 2-1, and the other end is fixedly connected to the outer wall of the frame of the upper active roller delivery assembly 1. The space between the lifting plate 2-2 and the lower horizontal plate of the U-shaped connecting frame 2-1 allows the side edge of the strip steel to pass through. A vertical drive cylinder 2-3 is installed on the upper horizontal plate of each U-shaped connecting frame 2-1. The output end of the vertical drive cylinder 2-3 moves through the upper horizontal plate of the corresponding U-shaped connecting frame 2-1 and connects with the lifting plate 2-2, thereby adjusting the height of the transport space between the two active roller delivery assemblies 1. The vertical drive cylinder 2-3 can be a vertical drive hydraulic cylinder or a vertical drive pneumatic cylinder.

[0041] refer to Figure 3 In some embodiments, the support beam 3 has an assembly groove 3-1 arranged along its length on the side near the feed side of the double active roller delivery mechanism. The transverse drive mechanism 4 includes a drive motor located at one end of the support beam 3 and a bidirectional lead screw with positive and negative threads at its left and right ends, respectively. The bidirectional lead screw is arranged along the length of the support beam 3 and rotatably assembled in its assembly groove 3-1. The output end of the drive motor movably passes through one side wall of the support beam 3 and is connected to the bidirectional lead screw located in the assembly groove 3-1. The left and right ends of the bidirectional lead screw are respectively fitted with nut sleeves that are threaded to them.

[0042] refer to Figure 3 and Figure 4As a specific embodiment, each pre-bending mechanism includes a U-shaped mounting frame 7, a horizontal connecting plate 8, two U-shaped assembly frames 9, a vertical pushing assembly 10, and two pre-bending pressure rollers 11. The U-shaped mounting frame 7 is located on the left or right side of the dual-active roller delivery mechanism. The U-shaped mounting frame 7 contains a vertical web and two horizontal wing plates, which are respectively horizontally positioned at the upper and lower ends of the web facing the dual-active roller delivery mechanism. The horizontal connecting plate 8 is located on the top of the upper wing plate of the U-shaped mounting frame 7. One end of the horizontal connecting plate 8 is fixedly connected to the top of the upper wing plate of the U-shaped mounting frame 7, and the other end extends into the assembly groove 3-1 of the support beam 3 and is connected to the nut sleeve on the corresponding side of the transverse drive mechanism 4. Furthermore, the bottom of the end of the horizontal connecting plate 8 extending into the assembly groove 3-1 is slidably connected to the assembly groove 3-1. When the drive motor of the transverse drive mechanism 4 drives the bidirectional lead screw to rotate within the assembly slot 3-1 of the support beam 3, the nut sleeves at both ends of the bidirectional lead screw can respectively drive the horizontal connecting plates 8 of the two pre-bending mechanisms to move relative to each other along the assembly slot 3-1, thus respectively driving the U-shaped mounting frames 7 of the two pre-bending mechanisms to move relative to each other. The two U-shaped mounting frames 9 are arranged symmetrically above and below with their openings facing each other. The two U-shaped mounting frames 9 are located on the upper and lower sides of the strip steel side edge, respectively. The U-shaped mounting frame 9 contains a horizontal main plate and vertical plates respectively set at the left and right ends of the main plate. The vertical plate on the side of the upper U-shaped mounting frame 9 away from the double active roller delivery mechanism is vertically slidably connected to the web of the U-shaped mounting frame 7, and the main plate of the upper U-shaped mounting frame 9 is connected to the upper wing plate of the U-shaped mounting frame 7 through the vertical push assembly 10. The main plate of the lower U-shaped mounting frame 9 is fixedly connected to the lower wing plate of the U-shaped mounting frame 7. Under the action of the vertical push assembly 10, the upper U-shaped mounting frame 9 can move vertically relative to the lower U-shaped mounting frame 9. Two pre-bending pressure rollers 11 are arranged vertically and vertically, and the two pre-bending pressure rollers 11 are respectively installed on the corresponding U-shaped assembly frame 9, so as to be located on the upper and lower sides of the strip edge respectively. One end of the two pre-bending pressure rollers 11 is rotatably connected to the vertical plate on the side of the corresponding U-shaped assembly frame 9 away from the double active roller delivery mechanism. The other ends of the two pre-bending pressure rollers 11 can cooperate to form an upwardly curved arc extrusion channel.

[0043] Specifically, the diameters of the two pre-bending rollers 11 on each pre-bending mechanism are both larger than the height of the vertical plate on the side of the U-shaped assembly frame 9 near the double active roller delivery mechanism, to avoid interference with the rotational cooperation of the two pre-bending rollers 11 in extruding the side edge of the strip. The side wall of the upper pre-bending roller 11 adopts an outwardly convex arc surface, and the side wall of the lower pre-bending roller 11 adopts an inwardly concave arc surface. The arc surfaces between the two pre-bending rollers 11 both extend upward in an arc shape. The arc surfaces between the two can cooperate to form an arc extrusion channel that matches the upward pre-bending arc of the side edge of the strip. The arc of this channel matches the pre-bending shape of the side edge of the strip, allowing the edge of the plate to form a naturally transitioning curved profile during extrusion shaping. When the vertical pushing assembly 10 pushes the upper U-shaped assembly frame 9 downward to move closer to the lower U-shaped assembly frame 9, the two pre-bending rollers 11 can cooperate to extrude an upward pre-bending arc on the side edge of the strip.

[0044] Furthermore, the vertical jacking assembly 10 includes a horizontal drive cylinder 10-1, a guide rail 10-2, a wedge-shaped jacking seat 10-3, a slider 10-4, a moving groove 10-5, a support plate 10-6, a jacking rod 10-7, a roller 10-8, and a stop plate 10-9. The horizontal drive cylinder 10-1 is located on the upper part of the web of the U-shaped mounting frame 7, and can be a horizontal drive hydraulic cylinder or a horizontal drive pneumatic cylinder. The guide rail 10-2 is arranged along the length of the upper flange of the U-shaped mounting frame 7 at its bottom. A wedge-shaped pusher seat 10-3 is located at the output end of the horizontal drive cylinder 10-1, and the top of the wedge-shaped pusher seat 10-3 is slidably connected to the guide rail 10-2 via a slider 10-4. The bottom surface of the wedge-shaped pusher seat 10-3 slopes downward from one end near the dual active roller delivery mechanism to the other end. A moving groove 10-5 is provided on the bottom surface of the wedge-shaped pusher seat 10-3 along its inclined direction, and stops that fit the moving groove 10-5 are provided at both ends of the bottom surface of the wedge-shaped pusher seat 10-3. A support plate 10-6 is fixedly mounted on the web of the U-shaped mounting bracket 7 and is horizontally located between the wedge-shaped pusher seat 10-3 and the main plate of the upper U-shaped mounting bracket 9. The upper end of the push rod 10-7 is rotatably equipped with a roller 10-8 that can roll within the moving groove 10-5 of the wedge-shaped push seat 10-3. Stops at both ends of the bottom surface of the wedge-shaped push seat 10-3 prevent the roller 10-8 from rolling out of the moving groove 10-5 after reaching its ends. The lower end of the push rod 10-7 slides through the support plate 10-6 and is fixedly connected to the main board of the upper U-shaped assembly frame 9. A stop plate 10-9, with a ring structure, is fixedly sleeved on the push rod 10-7 and located below the roller 10-8. A second return spring is sleeved on the push rod 10-7, with both ends of the second return spring abutting against the stop plate 10-9 and the support plate 10-6, respectively.

[0045] When the vertical jacking assembly 10 is working, the U-shaped mounting bracket 7 serves as the overall mounting carrier, and the horizontal drive cylinder 10-1 acts as the power output source. This drives the wedge-shaped jacking seat 10-3 to slide horizontally along the length of the guide rail 10-2. The top of the wedge-shaped jacking seat 10-3 slides against the guide rail 10-2 via a slider 10-4, ensuring smooth and stable horizontal movement without jamming or deviation. Because the bottom surface of the wedge-shaped jacking seat 10-3 is an inclined slope structure with an inclined moving groove 10-5, the roller 10-8 at the top of the jacking rod 10-7 always rolls and adheres to the inside of the moving groove 10-5. Simultaneously, the stops at both ends of the moving groove 10-5 limit and block the roller 10-8, effectively preventing it from slipping out and ensuring the safe and stable operation of the transmission structure. The support plate 10-6 provides vertical sliding support and a limiting reference for the jacking rod 10-7, allowing the jacking rod 10-7 to only perform vertical lifting and lowering movements.

[0046] When the horizontal drive cylinder 10-1 pushes out and drives the wedge-shaped push seat 10-3 to slide forward, the inclined slope gradually presses down the roller 10-8, causing the push rod 10-7 to move downward as a whole. The second reset spring is compressed, which in turn pushes the upper U-shaped assembly frame 9 and the corresponding pre-bending pressure roller 11 downward, reducing the distance between the upper and lower pre-bending pressure rollers 11 and increasing the pre-bending extrusion amount on the side edge of the strip. When the horizontal drive cylinder 10-1 retracts and drives the wedge-shaped push seat 10-3 to retreat and reset, the downward pressure of the inclined surface gradually decreases, the second reset spring extends and resets, driving the push rod 10-7 to move upward and reset, driving the upper U-shaped assembly frame 9 and the corresponding pre-bending pressure roller 11 to rise, increasing the distance between the upper and lower pre-bending pressure rollers 11 and reducing the pre-bending extrusion amount.

[0047] For ease of disassembly, each pre-bent pressure roller 11 is connected to the corresponding U-shaped mounting frame 9 on the side of the vertical plate away from the dual active roller delivery mechanism via a detachable rotating support 12.

[0048] For details, please refer to Figure 5The detachable rotating support 12 includes a base 12-1, a rotating shaft 12-2, a fixed cone 12-3, a main guide rod 12-4, a movable cone 12-5, a mounting ring 12-6, two connecting rods 12-7, two wedge-shaped limiting blocks 12-8, and four auxiliary guide rods 12-9. The base 12-1 is mounted on the vertical plate of the U-shaped assembly frame 9 away from the dual-drive roller delivery mechanism. One end of the rotating shaft 12-2 is rotatably connected to the center of the base 12-1 via a bearing. The fixed cone 12-3 is fixedly connected to the center of the other end of the rotating shaft 12-2 via the horizontally positioned main guide rod 12-4. The movable cone 12-5, symmetrically arranged with the fixed cone 12-3, is slidably sleeved on the main guide rod 12-4. The movable cone 12-5 can move horizontally relative to the fixed cone 12-3 along the main guide rod 12-4, and the larger diameter ends of the fixed cone 12-3 and the movable cone 12-5 are opposite each other. One end of the mounting ring 12-6 is fixedly connected to the end of the pre-bending pressure roller 11. The other end of the mounting ring 12-6 can be loosely fitted around the outside of the fixed cone 12-3 and the movable cone 12-5 and have clearance fit with them. Two through mounting holes are radially symmetrically opened on the ring wall of the mounting ring 12-6. Two connecting rods 12-7 are arranged radially symmetrically. One end of each connecting rod 12-7 is provided with a handle. The other end of each rod passes through two mounting holes on the mounting ring 12-6 and is provided with a wedge-shaped limiting block 12-8 at its end, which is adapted to the fixed cone 12-3 and the movable cone 12-5. The inner ring wall of the mounting ring 12-6 is provided with an annular groove communicating with its two mounting holes. Each connecting rod 12-7 is fitted with a first return spring. The two ends of the first return spring abut against the wedge-shaped limiting block 12-8 and the end of the mounting hole, respectively. When the two connecting rods 12-7 are pulled outward by the handles at the same time to compress the first return spring, the wedge-shaped limiting blocks 12-8 at the ends of the two connecting rods 12-7 can be placed in the grooves of the mounting ring 12-6, respectively. Four secondary guide rods 12-9 are horizontally arranged and symmetrically paired. One end of each secondary guide rod 12-9 is fixedly connected to the fixed cone 12-3, and the other end slides through the movable cone 12-5 and is fixedly connected to the end face of the rotating shaft 12-2. That is, the four secondary guide rods 12-9 are symmetrically distributed around the main directional rod 12-4. The movable cone 12-5 moves horizontally along the main directional rod 12-4 and the four secondary guide rods 12-9 relative to the fixed cone 12-3. The four secondary guide rods 12-9 are paired up, and the two secondary guide rods 12-9 in each pair are located on both sides of the corresponding wedge-shaped limiting block 12-8. When the two connecting rods 12-7 are released to reset the first reset spring, the wedge-shaped limiting blocks 12-8 at the ends of the two connecting rods 12-7 move radially in the groove of the mounting ring 12-6, pushing the movable cone 12-5 away from the fixed cone 12-3, and then entering between the corresponding two secondary guide rods 12-9 for limiting.

[0049] During operation, the base 12-1 serves as a fixed base, providing installation support for the entire rotating structure. The rotating shaft 12-2 is rotatably mounted at the center of the base 12-1 via bearings, allowing free rotation and ensuring stable rotation of the pre-bending roller 11. A fixed cone 12-3 is fixedly connected to the end of the rotating shaft 12-2 via a main guide rod 12-4. The movable cone 12-5 slides on the main guide rod 12-4 and, in conjunction with four symmetrically arranged auxiliary guide rods 12-9, achieves smooth horizontal sliding, ensuring that the movable cone 12-5 always maintains coaxiality with the fixed cone 12-3, allowing for precise movement closer to or further away from the fixed cone 12-3. A mounting ring 12-6 fixed to the end of the pre-bending roller 11 is fitted around the fixed cone 12-3 and the movable cone 12-5, achieving a fitting connection between the pre-bending roller 11 and the support body. Under normal operating conditions, the first return spring on the connecting rod 12-7 remains in the extended and reset state, pushing the wedge-shaped limiting block 12-8 inward to press the movable cone 12-5. This causes the wedge-shaped limiting block 12-8 to engage between the two corresponding secondary guide rods 12-9, while simultaneously being positioned between the fixed cone 12-3 and the movable cone 12-5. This provides radial and axial limiting for the mounting ring 12-6, ensuring that the pre-bending pressure roller 11 operates smoothly and reliably without loosening or shifting.

[0050] When it is necessary to disassemble, replace, or repair the pre-bending pressure roller 11, pull the two connecting rods 12-7 outward to compress the first return spring, causing the two wedge-shaped limiting blocks 12-8 to retract into the groove of the mounting ring 12-6, releasing the pushing limit on the movable cone 12-5. At the same time, push the mounting ring 12-6 axially closer to the rotating shaft 12-2. Release the handle so that the two wedge-shaped limiting blocks 12-8 naturally abut against the side wall of the movable cone 12-5. Then, pull the mounting ring 12-6 axially away from the rotating shaft 12-2. With the help of the two wedge-shaped limiting blocks 12-8, the movable cone 12-5 can be moved closer to the fixed cone 12-3 until the large diameter ends of the two are in contact. Since the fixed cone 12-3 and the movable cone 12-5 are symmetrically arranged, the inclined structure of the two can adapt and make way for each other. At this time, the pre-bending pressure roller 11 and the mounting ring 12-6 can be directly pulled out as a whole to achieve quick disassembly and assembly.

[0051] Further reference Figure 6 and Figure 7The auxiliary pressing assembly 5 includes two extension rods 5-1, two levers 5-2, an auxiliary pressing roller 5-3, two connecting seats 5-4, a counterweight rod 5-5, and two positioning components. The two extension rods 5-1 are horizontally positioned and symmetrically arranged on the left and right sides of the feed side frame of the upper active roller delivery assembly 1. The two levers 5-2 are symmetrically arranged and rotatably mounted on their respective extension rods 5-1 along the strip conveying direction. The lever arm at the end of each lever 5-2 closest to the feed side is longer than the lever arm at the other end. The auxiliary pressing roller 5-3 is horizontally positioned between the two levers 5-2. Both ends of the auxiliary pressing roller 5-3 are connected to the longer lever arms of the two levers 5-2 via vertically positioned connecting seats 5-4 to maintain a downward pressing state. The left and right ends of the auxiliary pressing roller 5-3 are rotatably connected to their respective connecting seats 5-4. The left and right ends of the bottom of the counterweight rod 5-5 are slidably mounted at one end of the short lever arm of each of the two levers 5-2. A transverse positioning groove 5-6 is formed on each end face of the counterweight rod 5-5, with "transverse" referring to the end face of the counterweight rod 5-5. Multiple tapered grooves evenly distributed along the length of the inner wall of the positioning groove 5-6 are provided. Two positioning components are symmetrically positioned at one end of the short lever arm of each of the two levers 5-2 to position the counterweight rod 5-5 as it moves along the short lever arm. By adjusting the distance from the counterweight rod 5-5 to the fulcrum, the pressing force of the auxiliary pressure roller 5-3 at the long lever arm end of each of the two levers 5-2 is changed, thus adapting to strips of different thicknesses and tensions.

[0052] Specifically, the positioning assembly includes an L-shaped mounting plate 5-7, a positioning plate 5-8, and a control screw 5-9. The L-shaped mounting plate 5-7 is arranged along the length of one end of the short lever arm of the lever 5-2, and its horizontal plate is fixedly connected to the side wall of the short lever arm of the lever 5-2. The positioning plate 5-8 is arranged along the length of one end of the short lever arm of the lever 5-2 and parallel to its side wall. The bottom of the positioning plate 5-8 is slidably connected to the horizontal plate of the L-shaped mounting plate 5-7, allowing it to slide closer to or further away from the side wall of the short lever arm of the lever 5-2. That is, the slide between the bottom of the positioning plate 5-8 and the horizontal plate of the L-shaped mounting plate 5-7 is arranged perpendicular to the side wall of the short lever arm of the lever 5-2. The top of the positioning plate 5-8 has a positioning strip arranged along its length, and the positioning strip has multiple conical teeth evenly distributed on it, which are adapted to the conical grooves in the positioning recesses 5-6. One end of the control screw 5-9 is provided with a handle, and the other end of the control screw 5-9 is threaded through the vertical plate of the L-shaped mounting plate 5-7 and rotatably connected to the positioning plate 5-8.

[0053] During the operation of the auxiliary pressing assembly 5, two symmetrically arranged extension rods 5-1 serve as fixed installation bases, providing stable rotation fulcrums and installation foundations for the levers 5-2. The two sets of levers 5-2 are arranged based on the lever principle, and their structure of a long lever arm on the feeding side and a short lever arm on the rear side provides structural support for the constant downward pressure of the auxiliary pressing roller 5-3. The auxiliary pressing roller 5-3 is suspended and assembled at the end of the long lever arm of the lever 5-2 through the connecting seats 5-4 on both sides. It can swing with the lever 5-2 to achieve vertical floating downward pressure. At the same time, the auxiliary pressing roller 5-3 can rotate freely relative to the connecting seats 5-4, and can roll synchronously with the material along with the upper surface of the strip. It forms a pre-pressing constraint on the strip on the feeding side, effectively eliminating the problems of strip feeding swaying and loosening. Together with the two active roller delivery assemblies 1, it improves the tightness of strip engagement and eliminates slippage during conveying.

[0054] This component relies on the gravity of the counterweight rod 5-5 to achieve downward pressure adjustment. The counterweight rod 5-5 is slidably mounted on one end of the short lever arm of the two levers 5-2, and can slide along the length of the short lever arm. By changing the distance between the counterweight rod 5-5 and the fulcrum, the downward pressing force of the auxiliary pressure roller 5-3 at the long lever arm end of the lever 5-2 can be adjusted by utilizing the change in lever torque. This adapts to the pressing needs of strip steel with different thicknesses and surface tensions, making it highly adaptable. The end faces of both ends of the counterweight rod 5-5 are provided with positioning grooves 5-6 with tapered slots, which, together with the positioning component, achieve precise locking and positioning after sliding.

[0055] When the positioning assembly is working, rotating the handle at the end of the control screw 5-9 drives the positioning plate 5-8 to slide along the side wall of the horizontal plate of the L-shaped mounting plate 5-7 relative to the short lever arm of the lever 5-2. This causes the conical teeth on the top positioning strip of the positioning plate 5-8 to engage or disengage from the conical groove inside the positioning groove 5-6 of the counterweight rod 5-5. When it is necessary to adjust the clamping force, rotating the control screw 5-9 causes the positioning plate 5-8 to slide and unlock, disengaging the conical teeth from the conical groove and releasing the limit on the counterweight rod 5-5. The counterweight rod 5-5 can then be freely slid to adjust the torque position. After adjustment, turning the control screw 5-9 pushes the positioning plate 5-8 to slide closer to the counterweight rod 5-5, causing the conical teeth to tightly engage and lock with the conical groove. This achieves non-slip positioning and locking of the counterweight rod 5-5, ensuring that the downward pressure of the auxiliary pressure roller 5-3 remains constant, continuously guaranteeing the stability and consistency of the strip feeding and conveying, and providing a stable feeding foundation for subsequent strip pre-bending processing.

[0056] Further, refer to Figure 8The correction assembly 6 includes an assembly rod 6-1, a spring rod 6-2, and a V-shaped correction block 6-3. The assembly rod 6-1 is horizontally perpendicular to the strip conveying direction and positioned near the feed side of the dual-drive roller delivery mechanism. One end of the assembly rod 6-1 is connected to the web sidewall of the U-shaped mounting frame 7; that is, the assembly rod 6-1 is mounted on the sidewall of the U-shaped mounting frame 7 near the feed side of the dual-drive roller delivery mechanism. One end of the spring rod 6-2 is connected to the other end of the assembly rod 6-1. The other end of the spring rod 6-2 extends close to the transport space between the two drive roller delivery assemblies 1 and has a V-shaped correction block 6-3 at its end that adapts to the side edge of the strip. The V-shaped correction block 6-3 contains two symmetrically arranged inclined correction plates. The ends of the two correction plates near the dual-drive roller delivery mechanism are open and can be located on the upper and lower sides of the side edge of the strip, respectively. The other ends of the two correction plates are fixedly connected.

[0057] During operation, the assembly rod 6-1 provides stable installation support for the overall correction structure, while the spring rod 6-2 has elastic extension and buffering adaptability, allowing for fine-tuning and yielding according to the side position of the strip, avoiding damage to the plate edge caused by rigid pushing. The V-shaped correction block 6-3 at the end adopts a symmetrical double correction plate structure, with its feed end having an open structure, which can simultaneously fit and limit from both the upper and lower sides of the strip edge, guiding and correcting the strip that has shifted laterally during conveying. When the strip deviates to the left or right during conveying, the deviated strip edge abuts against the inclined plate surface of the V-shaped correction block 6-3. Under the continuous conveying and feeding action, the inclined surface guides and corrects the lateral deviation, while the elastic buffering effect of the spring rod 6-2 adapts to the strip position deviation, avoiding rigid limiting jamming and scraping of the plate edge. With the coordinated operation of the symmetrically arranged correction components 6 on both sides, the conveying trajectory of the strip steel can be constrained, so that the strip steel can enter the pre-bending station smoothly in a centered state. This effectively solves the problem of strip steel deviation during delivery, ensures that the pre-bending amount on both sides of the strip steel is uniform, and greatly improves the overall pre-bending forming quality and conveying stability of the strip steel.

[0058] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic pre-bending device for steel plate delivery, characterized in that, include: The dual active roller delivery mechanism includes two active roller delivery components (1) arranged vertically and vertically. The two active roller delivery components (1) are connected by vertical drive mechanisms (2) symmetrically arranged on their left and right sides to drive them to move vertically relative to each other to adjust the distance of the strip. The support beam (3) is arranged horizontally above the active roller delivery assembly (1) on the upper side. The left and right ends of the bottom of the support beam (3) are respectively provided with vertical support columns. The support beam (3) is provided with a horizontal drive mechanism (4). Two pre-bending mechanisms are symmetrically arranged and distributed on the left and right sides of the double active roller delivery mechanism. The two pre-bending mechanisms are respectively moved on the support beam (3) and connected to the transverse drive mechanism (4) to synchronously move closer to or further away from the two sides of the strip. The two pre-bending mechanisms respectively perform upward arc pre-bending on the two sides of the strip by double roller extrusion. An auxiliary pressing and feeding assembly (5) is provided on the feed side of the dual active roller delivery mechanism to assist in pressing the strip steel. Two correction components (6) are symmetrically arranged and respectively installed on the two pre-bending mechanisms to cooperate with the pre-bending mechanisms to center and guide the strip steel.

2. The automatic pre-bending device for steel plate delivery according to claim 1, characterized in that, The vertical drive mechanism (2) includes: Two U-shaped connecting frames (2-1) are provided and arranged symmetrically along the length of the active roller delivery assembly (1). The U-shaped connecting frame (2-1) includes a vertical plate and horizontal plates respectively provided at the upper and lower ends of the vertical plate facing the dual active roller delivery mechanism. A slide rail is vertically provided on the side wall of the vertical plate of the U-shaped connecting frame (2-1) facing the dual active roller delivery mechanism. The lower horizontal plate of the U-shaped connecting frame (2-1) is fixedly connected to the outer wall of the frame of the lower active roller delivery assembly (1). The lifting plate (2-2) is horizontally arranged between the two horizontal plates of each U-shaped connecting frame (2-1). One end of the lifting plate (2-2) is slidably mounted on the slide rail of the vertical plate of the corresponding U-shaped connecting frame (2-1), and the other end is fixedly connected to the outer wall of the frame of the upper active roller delivery assembly (1). A vertical drive cylinder (2-3) is installed on the upper horizontal plate of each of the U-shaped connecting frames (2-1). The output end of the vertical drive cylinder (2-3) moves through the upper horizontal plate of the corresponding U-shaped connecting frame (2-1) and is connected to the lifting plate (2-2) to adjust the height of the transport space between the two active roller delivery assemblies (1).

3. The automatic pre-bending device for steel plate delivery according to claim 2, characterized in that, The support beam (3) has an assembly groove (3-1) arranged along its length on the side near the feed side of the double active roller delivery mechanism; the transverse drive mechanism (4) includes a drive motor set at one end of the support beam (3) and a bidirectional screw with positive and negative threads respectively at the left and right ends. The bidirectional screw is arranged along the length of the support beam (3) and rotated in the assembly groove (3-1). The output end of the drive motor moves through one side wall of the support beam (3) and is connected to the bidirectional screw located in the assembly groove (3-1). The left and right ends of the bidirectional screw are respectively fitted with nut sleeves that are threaded to them.

4. The automatic pre-bending device for steel plate delivery according to claim 3, characterized in that, The pre-bending mechanism includes: U-shaped mounting bracket (7) is provided on the left or right side of the dual active roller delivery mechanism. The U-shaped mounting bracket (7) has a vertical web and wing plates that are respectively horizontally arranged at the upper and lower ends of the web facing the dual active roller delivery mechanism. A horizontal connecting plate (8) is provided on the top of the upper wing plate of the U-shaped mounting bracket (7). One end of the horizontal connecting plate (8) is fixedly connected to the top of the upper wing plate of the U-shaped mounting bracket (7), and the other end extends into the assembly groove (3-1) of the support beam (3) and is connected to the nut sleeve on the corresponding side of the transverse drive mechanism (4). The bottom of the end of the horizontal connecting plate (8) that extends into the assembly groove (3-1) is slidably connected to the assembly groove (3-1). Two U-shaped assembly frames (9) are provided. The two U-shaped assembly frames (9) are arranged symmetrically above and below with their openings facing each other. Each U-shaped assembly frame (9) contains a horizontal main board and vertical plates respectively arranged at the left and right ends of the main board. The vertical plate of the upper U-shaped assembly frame (9) away from the double active roller delivery mechanism is vertically slidably connected to the web of the U-shaped mounting frame (7). The main board of the upper U-shaped assembly frame (9) is connected to the upper wing plate of the U-shaped mounting frame (7) through a vertical push assembly (10). The main board of the lower U-shaped assembly frame (9) is fixedly connected to the lower wing plate of the U-shaped mounting frame (7). Two pre-bending pressure rollers (11) are arranged correspondingly on the top and bottom. The two pre-bending pressure rollers (11) are respectively installed on the corresponding U-shaped assembly frame (9) so that they are located on the upper and lower sides of the strip edge. One end of the two pre-bending pressure rollers (11) is rotatably connected to the vertical plate on the side of the corresponding U-shaped assembly frame (9) away from the double active roller delivery mechanism. The other ends of the two pre-bending pressure rollers (11) can cooperate to form an upwardly curved arc extrusion channel.

5. The automatic pre-bending device for steel plate delivery according to claim 4, characterized in that, The diameters of the two pre-bending rollers (11) on each pre-bending mechanism are each greater than the height of the upright plate on the side of the U-shaped mounting frame (9) near the double active roller delivery mechanism. The side wall of the upper pre-bending roller (11) is an outwardly convex arc surface, and the side wall of the lower pre-bending roller (11) is an inwardly concave arc surface. The arc surfaces of the two are matched to form an arc extrusion channel that is adapted to the upward pre-bending curvature of the strip edge. The pre-bending roller (11) and the upright plate on the side of the corresponding U-shaped mounting frame (9) away from the double active roller delivery mechanism are connected by a detachable rotating support (12).

6. The automatic pre-bending device for steel plate delivery according to claim 5, characterized in that, The detachable rotating support (12) includes: The base (12-1) is disposed on the upright plate on the side of the U-shaped assembly frame (9) away from the dual active roller delivery mechanism; The rotating shaft (12-2) is rotatably connected at one end to the center of the base (12-1) via a bearing; A fixed cone (12-3) is fixedly connected to the center of the other end of the rotating shaft (12-2) via a horizontally arranged main guide rod (12-4). A movable cone (12-5) is slidably sleeved on the main guide rod (12-4) and arranged symmetrically with the fixed cone (12-3). The larger diameter ends of the fixed cone (12-3) and the movable cone (12-5) are opposite each other. The movable cone (12-5) can move horizontally relative to the fixed cone (12-3) along the main guide rod (12-4). The mounting ring (12-6) has one end fixedly connected to the end of the pre-bending pressure roller (11), and the other end of the mounting ring (12-6) can be loosely fitted around the outside of the fixed cone (12-3) and the movable cone (12-5) and have clearance fit with them. The mounting ring (12-6) has two through mounting holes radially symmetrically opened on its ring wall. Two connecting rods (12-7) are arranged radially symmetrically. One end of each connecting rod (12-7) is provided with a handle, and the other end of each rod passes through two mounting holes on the mounting ring (12-6) and is provided with a wedge-shaped limiting block (12-8) at its end, which is adapted to the fixed cone (12-3) and the movable cone (12-5). The inner ring wall of the mounting ring (12-6) is provided with a groove communicating with its two mounting holes. Each connecting rod (12-7) is fitted with a first return spring. The two ends of the first return spring abut against the wedge-shaped limiting block (12-8) and the end of the mounting hole, respectively. When the connecting rod (12-7) is pulled outward to compress the first return spring, the wedge-shaped limiting block (12-8) can be placed in the groove of the mounting ring (12-6). There are four horizontally arranged secondary guide rods (12-9), symmetrically arranged in pairs. One end of each secondary guide rod (12-9) is fixedly connected to the fixed cone (12-3), and the other end slides through the movable cone (12-5) and is fixedly connected to the end face of the rotating shaft (12-2). The four secondary guide rods (12-9) are arranged in pairs, and the two secondary guide rods (12-9) in each pair are located on both sides of the corresponding wedge-shaped limiting block (12-8). When the connecting rod (12-7) is released to reset the first reset spring, the wedge-shaped limiting block (12-8) can move radially within the groove of the mounting ring (12-6) to push the movable cone (12-5) away from the fixed cone (12-3) and then enter between the corresponding two secondary guide rods (12-9) for limiting.

7. An automatic pre-bending device for steel plate delivery according to any one of claims 4-6, characterized in that, The vertical jacking assembly (10) includes: A horizontal drive cylinder (10-1) is disposed on the upper part of the web of the U-shaped mounting bracket (7); The guide rail (10-2) is arranged at its bottom along the length of the upper wing plate of the U-shaped mounting bracket (7); A wedge-shaped pusher (10-3) is disposed at the output end of the horizontal drive cylinder (10-1). The top of the wedge-shaped pusher (10-3) is slidably connected to the guide rail (10-2) via a slider (10-4). Its bottom surface slopes downward from one end near the dual active roller delivery mechanism to the other end. A moving groove (10-5) is provided on the bottom surface of the wedge-shaped pusher (10-3) along its inclined direction. The support plate (10-6) is fixedly installed on the web of the U-shaped mounting bracket (7) and is horizontally located between the wedge-shaped push seat (10-3) and the main board of the upper U-shaped assembly bracket (9); The upper end of the push rod (10-7) is rotatably provided with a roller (10-8) that can roll in the moving groove (10-5) of the wedge-shaped push seat (10-3). The lower end of the push rod (10-7) slides through the support plate (10-6) and is fixedly connected to the main board of the upper U-shaped assembly frame (9). A stop plate (10-9) is fixedly sleeved on the push rod (10-7) and located below the roller (10-8). A second return spring is sleeved on the push rod (10-7), and the two ends of the second return spring abut against the stop plate (10-9) and the support plate (10-6) respectively.

8. An automatic pre-bending device for steel plate delivery according to any one of claims 1-6, characterized in that, The auxiliary pressing assembly (5) includes: There are two horizontal extension rods (5-1), and the two extension rods (5-1) are symmetrically arranged on the left and right sides of the feed side frame of the upper active roller delivery assembly (1); Two levers (5-2) are symmetrically arranged. The two levers (5-2) are respectively rotatably arranged on the corresponding extension rods (5-1) along the strip conveying direction. The lever arm of the end of each lever (5-2) near the feed side is greater than the lever arm of the other end. An auxiliary pressure roller (5-3) is horizontally positioned between two levers (5-2). The left and right ends of the auxiliary pressure roller (5-3) are connected to one end of the long lever arm of the two levers (5-2) via vertically positioned connecting seats (5-4). The left and right ends of the auxiliary pressure roller (5-3) are rotatably connected to the corresponding connecting seats (5-4). The counterweight rod (5-5) is slidably mounted at one end of the short lever arm of the two levers (5-2) at its bottom left and right ends respectively. The counterweight rod (5-5) has transverse positioning grooves (5-6) on its end faces respectively. The inner wall of the positioning groove (5-6) has multiple conical grooves evenly distributed along its length. The positioning components are provided in two, and the two positioning components are respectively symmetrically arranged at one end of the short lever arm of the two levers (5-2) to position the counterweight rod (5-5) that moves at one end of the short lever arm of the two levers (5-2).

9. The automatic pre-bending device for steel plate delivery according to claim 8, characterized in that, The positioning component includes: An L-shaped mounting plate (5-7) is arranged along the length of one end of the short lever arm of the lever (5-2), and the horizontal plate of the L-shaped mounting plate (5-7) is fixedly connected to the side wall of one end of the short lever arm of the lever (5-2). The positioning plate (5-8) is arranged along the length of one end of the short lever arm of the lever (5-2) and parallel to its side wall. The bottom of the positioning plate (5-8) is slidably connected to the cross plate of the L-shaped mounting plate (5-7) so as to slide relative to the side wall of one end of the short lever arm of the lever (5-2). The top of the positioning plate (5-8) is provided with a positioning strip arranged along its length. The positioning strip is evenly distributed with a plurality of conical teeth that are adapted to the conical groove in the positioning groove (5-6). The control screw (5-9) has a handle at one end, and the other end of the control screw (5-9) is threaded through the vertical plate of the L-shaped mounting plate (5-7) and rotatably connected to the positioning plate (5-8).

10. An automatic pre-bending device for steel plate delivery according to any one of claims 4-6, characterized in that, The correction component (6) includes: The assembly rod (6-1) is set horizontally perpendicular to the strip conveying direction and close to the feed side of the double active roller delivery mechanism. One end of the assembly rod (6-1) is connected to the web sidewall of the U-shaped mounting frame (7). A spring rod (6-2) is connected at one end to the other end of the assembly rod (6-1), and the other end of the spring rod (6-2) extends close to the transport space between the two active roller delivery assemblies (1) and is provided at its end with a V-shaped correction block (6-3) adapted to the side edge of the strip.

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