A guide rail roll forming apparatus

Abstract

The present application relates to the field of guide rail integrated processing, and specifically discloses a guide rail roll forming equipment, which comprises a rolling machine, a punching machine, a sand belt polishing machine and a cutting machine, the rolling machine, the punching machine, the sand belt polishing machine and the cutting machine are sequentially arranged along the direction of steel entering, and the forming defective products can be effectively reduced through the mode of forming first and then punching; the punching machine comprises a supporting seat, a plurality of guide pillars are fixedly connected to the upper end of the supporting seat, the upper ends of the plurality of guide pillars are jointly fixedly connected with a top plate, and a hydraulic telescopic rod is fixedly connected to the lower end of the top plate. During use, the forming equipment adopts the mode of forming first and then punching, thereby improving the quality of finished products; in addition, during punching, the mode of first abutting tightly and then punching from bottom to top can avoid the bending of the punching area caused by subsequent back movement, thereby reducing the possibility of hole body deformation, and after the bottom support is subsequently removed, the profile is not prone to damage during movement.

Description

Technical Field

[0001] This invention relates to the field of integrated guide rail processing, and more particularly to a guide rail roll forming equipment. Background Technology

[0002] C-shaped guide rails are widely used in electrical equipment installation, mechanical guidance, and other fields. Their manufacturing typically involves processes such as punching, roll forming, and grinding and cutting. In existing technologies, the processing sequence of C-shaped guide rails generally uses an integrated forming machine in the intelligent manufacturing equipment industry. Specifically, this machine feeds the punched steel strip into a roll forming unit, where it is gradually bent into a C-shaped cross-section by multiple rollers. Finally, it is ground and cut to achieve a comprehensive forming effect.

[0003] However, the above-mentioned process sequence of punching followed by rolling has significant drawbacks. After punching, the cross-sectional area of ​​the material around the hole decreases, resulting in a significant reduction in local strength and stiffness. During the subsequent rolling process, the strip undergoes multiple bending deformations, and due to the reduced strength in the area around the hole, it is highly susceptible to defects such as edge cracking and hole distortion under bending stress.

[0004] Furthermore, during punching in a continuous stamping die, after the coil is uncoiled and the cold-bent / extruded profile is formed, there will inevitably be flatness defects in the vertical direction, such as wavy, warped, and local arching along the feeding direction. In particular, long profiles will also sag due to their own weight. In order to improve the ease of feeding at the feeding end, the guide structure needs to reserve a large gap in the vertical direction, resulting in the profile lacking effective constraint in the vertical direction in the punching area.

[0005] Under the aforementioned insufficient constraints, when the punch descends to complete the punching and enters the return phase, an upward frictional force is generated between the punch sidewall and the hole wall along the return direction of the punch. Since the profile lacks effective vertical constraints in the punching area, this upward frictional force will cause the profile in the punching area to displace upwards, resulting in localized upward bending at the punching position. When the profile bends upwards in the punching area, the punched hole section tilts and deflects accordingly, causing the hole wall to bear compressive stress on the inner side of the bend and tensile stress on the outer side. On the compressive stress side, the hole wall material is squeezed and contracted inwards under the action of compressive stress, causing a sharp increase in the normal contact force between the hole wall and the punch, which in turn leads to a further increase in frictional force. This increased frictional force further exacerbates the upward bending of the profile, forming a positive feedback effect. When the additional stress on the compressive side of the hole wall exceeds the yield strength of the material, the hole wall material undergoes irreversible plastic deformation. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a guide rail roll forming equipment. During use, this equipment adopts a method of forming first and then punching, which improves the quality of the finished product. In addition, during the punching process, the method of pressing from bottom to top before punching can avoid bending of the punching area caused by subsequent back movement, thereby reducing the possibility of hole deformation. Furthermore, after the bottom support is removed, the profile is less likely to be damaged during movement.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A guide rail roll forming equipment includes a roll forming machine, a punching machine, a belt polishing machine, and a cutting machine. The roll forming machine, punching machine, belt polishing machine, and cutting machine are arranged sequentially along the steel entry direction. By forming first and then punching, the number of defective products can be effectively reduced. The punching machine includes a support base, with multiple guide pillars fixedly connected to the upper end of the support base. A top plate is fixedly connected to the upper ends of the multiple guide pillars, and a hydraulic telescopic rod is fixedly connected to the lower end of the top plate. A lifting module is fixedly connected to the telescopic end of the hydraulic telescopic rod. The multiple guide pillars all pass through the lifting module and are slidably connected. Multiple punching cutters are fixedly connected to the lower end of the lifting module. A fixing plate is fixedly connected to the multiple guide pillars, and a connecting seat is fixedly connected to the upper end of the fixing plate. The connecting seat has a T-shaped through-slot and a horizontal through-slot running along the direction of the steel entry. A drive groove is opened at the bottom of the horizontal through-slot, and a fixing strip is fixedly connected to the top of the T-shaped through-slot. The fixing strip has multiple through-holes that cooperate with the punching cutters. A support member is installed inside the drive groove. When the lifting module moves downward, the support member automatically moves upward through the drive mechanism, pushing the steel to be punched upward until the other side of the steel contacts the lower end of the fixing strip.

[0008] Preferably, the T-shaped through groove, the horizontal through groove, and the fixing strip together form a guide space, which is used for the rolled profile to pass through.

[0009] Preferably, the drive mechanism includes extension plates symmetrically fixedly connected to both sides of the lifting module, with a first rack fixedly connected to the lower end of each of the two extension plates, and a gearbox installed on both sides of the connecting seat. A first gear is fixedly connected to the input end of each of the two gearboxes, and each of the two first gears meshes with the corresponding first rack.

[0010] Preferably, the drive mechanism further includes a bidirectional threaded rod rotatably connected between the inner walls of both sides of the drive groove. Both threaded ends of the bidirectional threaded rod are threadedly connected to wedge-shaped sliding seats. Horizontal sliding plates are fixedly connected to the opposite sides of the two wedge-shaped sliding seats. The lower end faces of the two wedge-shaped sliding seats are slidably connected to the inner bottom of the drive groove. Both ends of the bidirectional threaded rod extend to the outside and are fixedly connected to the output end of the corresponding gearbox.

[0011] Preferably, the support includes a lifting plate, and two wedge-shaped abutment seats are symmetrically fixedly connected to the lower end of the lifting plate. The two wedge-shaped abutment seats cooperate with two wedge-shaped sliding seats respectively.

[0012] Preferably, the lower end of the wedge-shaped abutment seat is fixedly connected to multiple lifting columns, and the inner bottom of the drive groove is fixedly connected to multiple connecting cylinders. The lower ends of the multiple lifting columns extend into the interior of the connecting cylinders, and the lower ends of the multiple lifting columns are elastically connected to the inner bottom of the corresponding connecting cylinders through support springs.

[0013] Preferably, the support further includes a rotating shaft rotatably connected to one side of the lifting plate, multiple support bars are fixedly connected at equal intervals to the upper end of the lifting plate, a lower support plate is provided above the lifting plate, and the rotating shaft passes through one side of the lower support plate and is fixedly connected.

[0014] Preferably, the drive groove has a vertical strip-shaped opening on the side near where the steel enters, one end of the rotating shaft passes through the vertical strip-shaped opening and is fixedly connected to a second gear, and the connecting seat is fixedly connected to a second rack on the side near where the steel enters, and the second rack meshes with the second gear.

[0015] Preferably, it also includes a shaking mechanism, which includes multiple cams fixedly connected to a bidirectional threaded rod, and multiple support wheels fixedly connected to the lower end of the lifting plate, with each support wheel cooperating with a corresponding cam.

[0016] Preferably, it also includes a debris collection mechanism, which includes a collection trough opened on one side wall of the drive trough, the inner bottom surface of the collection trough is inclined, a baffle is fixedly connected to the trough opening on the side away from the drive trough, a plurality of first discharge ports are opened on the lower support plate, a plurality of second discharge ports are opened on the lifting plate, a drop port is opened at the inner bottom of the drive trough, and a collection box is fixedly connected to the upper end of the support base.

[0017] Compared with the prior art, the beneficial effects of this invention are as follows: 1. This invention relates to the intelligent manufacturing equipment industry. It is an integrated combined machine that adopts a process sequence of first rolling and then punching. This avoids the problem of reduced strength caused by the reduced cross-sectional area of ​​the material around the hole when punching and then rolling. It effectively prevents defects such as hole edge cracking, hole shape distortion and micro-cracks during the forming process, significantly reduces the defect rate of forming, and improves the product quality and structural strength of C-shaped guide rails.

[0018] 2. By setting up an upwardly movable support in the punching area, the profile is pushed upwards during punching until it contacts the upper fixing strip, thus clamping the profile vertically within the punching area and effectively restricting its vertical freedom. The upward friction force generated during the return stroke of the punching cutter is completely balanced by the clamping force, keeping the profile stationary in the punching area. This avoids irreversible plastic shrinkage deformation caused by asymmetrical stress on the hole wall due to the upward bending of the profile, ensuring punching accuracy and hole shape quality.

[0019] 3. The horizontal edges on both sides of the profile are supported at the bottom within the guide space for movement. The lower end face of the C-shaped section is always suspended in the air when not punched, and does not contact any surface. The burrs protruding from the lower end face after punching will not rub against the supporting surface during the movement of the profile, avoiding burr particles falling off and scratching the surface of subsequent profiles.

[0020] 4. During the resetting process, the lower support plate can change from a horizontal to an inclined state, forming an inclined surface facing the chip removal direction. A small amount of burrs and debris remaining on the surface of the lower support plate after punching will slide off and be discharged along the inclined surface under gravity. Simultaneously, the vibration mechanism causes the lower support plate to reciprocate slightly near its lowest position. This, combined with the meshing transmission of the gear and rack, causes the lower support plate to oscillate slightly. The combined effect of vibration and oscillation effectively dislodges the burrs and debris adhering to the surface of the lower support plate due to inertia. The periodic change in the inclination angle further accelerates the sliding of debris along the inclined surface. This structure ensures that the lower support plate remains clean in each stamping cycle, preventing debris accumulation from causing indentations or scratches on the lower end face of the profile during the next upward support movement, thus guaranteeing the surface quality of the profile. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a guide rail roll forming equipment proposed in this invention; Figure 2 for Figure 1 Top view; Figure 3 This is a schematic diagram of the left side of the stamping machine; Figure 4 for Figure 3 Enlarged view of point A; Figure 5 for Figure 3 A schematic diagram of the three-dimensional structure; Figure 6 for Figure 5 A schematic diagram of the rear structure; Figure 7 for Figure 6 Partial structural diagram; Figure 8 for Figure 7 A cross-sectional view in the left and right directions; Figure 9 for Figure 8 Left side plan view; Figure 10 for Figure 7 Front and rear cross-sectional view; Figure 11 This is an exploded view showing the connection between the connecting cylinder and the lifting column.

[0022] In the diagram: 1 Roller, 2 Punching machine, 3 Belt polishing machine, 4 Cutting machine, 5 Support seat, 6 Hydraulic telescopic rod, 7 Lifting module, 8 Guide column, 9 Fixing plate, 10 Connecting seat, 11 Top plate, 12 T-shaped through slot, 13 Punching knife, 14 Horizontal through slot, 15 Collection box, 16 Extension plate, 17 First rack, 18 Gearbox, 19 First gear, 20 Second gear, 21 Second rack, 22 Fixing bar, 23 Drive slot, 24 Lifting plate, 25 Discharge port, 26 Support bar, 27 Lower support plate, 28 Rotating shaft, 29 Collection slot, 30 Baffle, 31 Bidirectional threaded rod, 32 Cam, 33 Support wheel, 34 Horizontal sliding plate, 35 Wedge sliding seat, 36 Wedge abutment seat, 37 Lifting column, 38 Support spring, 39 Through port, 40 First discharge port, 41 Second discharge port, 42 Connecting cylinder. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0024] The forming equipment of this invention belongs to the intelligent manufacturing equipment industry within the high-end equipment manufacturing industry. Specifically, it is an integrated combination machine used for rolling, punching, grinding, and cutting of steel. Compared with existing technologies, it adopts a method of forming first and then punching, which improves the quality of the finished product. In addition, its punching part also belongs to the intelligent manufacturing equipment industry within the high-end equipment manufacturing industry. Specifically, it utilizes a hydraulic punching machine with a guide pillar and mold assembly structure. This punching machine adopts a bottom support method, which ensures the punching quality and avoids secondary damage caused by burrs and debris falling onto the support surface.

[0025] Reference Figures 1-11A guide rail roll forming equipment includes a roll forming machine 1, a punching machine 2, a belt polishing machine 3, and a cutting machine 4. The roll forming machine 1, punching machine 2, belt polishing machine 3, and cutting machine 4 are arranged sequentially along the steel feed direction. By forming first and then punching, the number of defective products can be effectively reduced. The roll forming machine 1, belt polishing machine 3, and cutting machine are all existing technologies, used for roll forming, deburring, and cutting of steel bars, respectively. The entire system adopts a combined processing method, ultimately producing sections of C-shaped guide rails. Specifically, the roll forming machine 1 has multiple sets of internal components... The roller assembly, each consisting of an upper roller and a lower roller working in tandem, sequentially bends the flat steel sheet into a C-shaped cross-section. A belt sander 3 uses a high-speed rotating sander belt to remove burrs remaining on the lower end face of the punched profile. A cutting machine 4 uses existing hydraulic shearing methods to cut the continuous profile into single guide rail products according to a preset length. The C-shaped guide rail model targeted in this solution is C45, whose specific structure consists of a C-shaped section and horizontal edges on both sides. Multiple elliptical holes are opened in the horizontal portion of the C-shaped section. For details, please refer to [reference needed]. Figure 4 The part shown; The punching machine 2 includes a support base 5, which serves as the basic load-bearing structure for fixing and supporting the various components of the punching machine 2. Multiple guide pillars 8 are fixedly connected to the upper end of the support base 5. A top plate 11 is fixedly connected to the upper end of the multiple guide pillars 8. A hydraulic telescopic rod 6 is fixedly connected to the lower end of the top plate 11. A lifting module 7 is fixedly connected to the telescopic end of the hydraulic telescopic rod 6. The multiple guide pillars 8 all penetrate the lifting module 7 and are slidably connected. The multiple guide pillars 8 are evenly distributed along the circumference of the lifting module 7 to provide precise linear guidance for the vertical movement of the lifting module 7, preventing the lifting module 7 from shifting during movement. Multiple guide pillars are fixedly connected to the lower end of the lifting module 7. The punching cutter 13 and the lifting module 7 serve as the mounting carrier for the punching cutter 13. Driven by the hydraulic telescopic rod 6, they move up and down as a whole, thereby driving multiple punching cutters 13 to complete the punching action simultaneously. Multiple punching cutters 13 are set up in accordance with the distribution position of the elliptical holes on the C-shaped guide rail, and are used to punch the horizontal part of the C-shaped section to realize the processing operation of multiple holes at one time. Multiple guide pillars 8 are connected to a fixing plate 9. The upper end of the fixing plate 9 is fixedly connected to a connecting seat 10. The connecting seat 10 is provided with a T-shaped through groove 12 and a horizontal through groove 14 along the steel entry direction. The bottom of the horizontal through groove 14 is provided with a driving groove 23. The top of the T-shaped through groove 12 is fixedly connected to a fixing strip 22. The T-shaped through groove 12, the horizontal through groove 14, and the fixing strip 22 together form a guide space for the rolled profile to pass through. The rolled profile is C-shaped with horizontal edges on both sides, which rest on the inner bottom of the T-shaped through groove 12. In existing technologies, the support typically supports the inner bottom of the C-shaped section. During subsequent punching, as the profile moves, burrs protrude from the lower surface of the profile, causing friction between the burrs and the support surface. This friction causes burr particles to fall onto the support surface, scratching the subsequent rolled guide rail. In this design, the lower surface of the C-shaped section does not contact the inner bottom of the horizontal through groove 14 before punching. The lower surface of the C-shaped section... The bottom of the horizontal through groove 14 is suspended at a certain distance. Using this method, when the profile moves backward after punching, its lower end face (burr face) will not contact any surface. The profile is supported and moves by relying on the horizontal edges on both sides to support the bottom of the T-shaped through groove 12. The lower end face of the C-shaped section is always suspended to avoid the burrs being worn away and scratching the profile. The fixing strip 22 has multiple through holes 39 that cooperate with the punching knife 13. The shape and size of the through holes 39 are matched with the cutting edge of the punching knife 13, so that the punching knife 13 can pass through the fixing strip 22 to punch the profile below during punching. At the same time, the inner wall of the through holes 39 plays an auxiliary guiding role for the punching knife 13. The drive groove 23 is equipped with a support.

[0026] When the lifting module 7 moves downward, the drive mechanism causes the support to automatically move upward, pushing the steel to be punched upward until the other side of the steel contacts the lower end face of the fixing strip 22. In this way, the profile is clamped between the upper end face of the support and the lower end face of the fixing strip 22 before punching, effectively restraining the profile in the vertical direction of the punching area. This prevents the friction force from causing the profile to bend upward during the return stroke of the punch, thus avoiding plastic shrinkage deformation of the hole. Compared with the prior art, transferring the bent part to the feeding and discharging parts of the punching machine avoids the situation where the profile moving back to the end of the hole bends locally, ultimately leading to deformation of the hole. The drive mechanism includes extension plates 16 symmetrically fixedly connected to both sides of the lifting module 7. The extension plates 16 are used to transfer the bent part to the feeding and discharging parts of the punching machine. The up-and-down movement of the lifting module 7 is transmitted to the gear and rack transmission structure on both sides. The lower ends of the two extension plates 16 are fixedly connected to the first rack 17. The two sides of the connecting seat 10 are equipped with a gearbox 18. The gearbox 18 uses an accelerator, which can amplify the number of rotations before output. The gearbox 18 is used to increase the speed of the rotation of the first gear 19, so that the small displacement of the lifting module 7 can drive the bidirectional threaded rod 31 to generate a sufficient rotation angle, thereby ensuring that the wedge sliding seat 35 obtains a sufficient horizontal displacement. The input ends of the two gearboxes 18 are fixedly connected to the first gear 19. The two first gears 19 mesh with the corresponding first rack 17. The first gear 19 rotates under the drive of the first rack 17, realizing the conversion of linear motion to rotational motion. Furthermore, the drive mechanism also includes a bidirectional threaded rod 31 rotatably connected between the inner walls of both sides of the drive groove 23. Both threaded ends of the bidirectional threaded rod 31 are threadedly connected to wedge-shaped sliding seats 35. The middle part of the bidirectional threaded rod 31 has a threadless section as a rotation fulcrum. The threads at both ends are in opposite directions, so that the two wedge-shaped sliding seats 35 can achieve symmetrical movement relative to or opposite to each other when rotating. The opposite sides of the two wedge-shaped sliding seats 35 are fixedly connected to horizontal sliding plates 34. The lower end faces of the two wedge-shaped sliding seats 35 are slidably connected to the inner bottom of the drive groove 23 to guide and limit the movement of the wedge-shaped sliding seats 35 and prevent the wedge-shaped sliding seats 35 from deflecting during movement. Both ends of the bidirectional threaded rod 31 extend to the outside and are fixedly connected to the output end of the corresponding gearbox 18. In this way, during the downward movement of the lifting module 7, the meshing of the first gear 19 and the first rack 17 is used, and the output is amplified by the gearbox 18 to realize the rotation of the bidirectional threaded rod 31, thereby allowing the two wedge-shaped sliding seats 35 to move relative to each other.

[0027] The support includes a lifting plate 24, with two wedge-shaped abutment seats 36 symmetrically fixed to its lower end. Each wedge-shaped abutment seat 36 engages with a wedge-shaped sliding seat 35. When the two wedge-shaped sliding seats 35 move relative to each other, they abut against the two wedge-shaped abutment seats 36, causing the lifting plate 24 to move upwards. The wedge angles of the two wedge-shaped abutment seats 36 and the two wedge-shaped sliding seats 35 are matched, and the angles determine the ratio of horizontal displacement to vertical upward displacement. When the lifting plate 24 reaches its highest position, the profile is abutted until it reaches the inner bottom of the C-shaped section and contacts the fixing strip 22. At this time, the lower end face of the punching cutter 13 also passes through the corresponding through-hole 39 and contacts the inner bottom of the C-shaped section. As it continues to move downwards, punching can be performed. It should be noted that at this time... Although the first gear 19 is still rotating, the two wedge-shaped sliding seats 35 and the two wedge-shaped abutting seats 36 are no longer in inclined contact but in horizontal contact, so the lifting plate 24 will not continue to move upward. This horizontal contact design plays a self-locking and limiting role, so that the lifting plate 24 remains stable at the highest position and will not be pushed downward due to the impact force during punching. The lower end of the wedge-shaped abutting seat 36 is fixedly connected to multiple lifting columns 37, and the inner bottom of the drive groove 23 is fixedly connected to multiple connecting cylinders 42. The lower ends of the multiple lifting columns 37 extend into the interior of the connecting cylinders 42. The lower ends of the multiple lifting columns 37 are elastically connected to the inner bottom of the corresponding connecting cylinders 42 through the support springs 38. With this structure, it is convenient to reset the lifting plate 24 in the future, while ensuring the operation of the subsequent shaking mechanism. Furthermore, the support also includes a rotating shaft 28 rotatably connected to one side of the lifting plate 24. The rotating shaft 28 is used to realize the rotation of the lower support plate 27 relative to the lifting plate 24, so that the lower support plate 27 can switch between a horizontal support state and an inclined chip removal state. Multiple support bars 26 are fixedly connected at equal intervals at the upper end of the lifting plate 24. The lower support plate 27 is provided above the lifting plate 24. When the lower support plate 27 is in a horizontal state, it and the support bars 26 together form a stable upward support surface for the profile. The rotating shaft 28 passes through one side of the lower support plate 27 and is fixedly connected.

[0028] The drive groove 23 has a vertical slot on the side near the steel entry point. This slot provides a channel for the vertical movement of one end of the rotating shaft 28, allowing it to move up and down synchronously with the lifting plate 24. One end of the rotating shaft 28 passes through the vertical slot and is fixedly connected to a second gear 20. The second gear 20 meshes with the second rack 21 as the lifting plate 24 moves up and down, driving the rotating shaft 28 to rotate. The connecting seat 10 is fixedly connected to the second rack 21 on the side near the steel entry point. The second rack 21 and the second gear 20... 0 meshing, the second rack 21 is a fixed rack. When the second gear 20 moves up and down with the lifting plate 24, the relative movement between the second gear 20 and the second rack 21 causes the second gear 20 to rotate, thereby driving the rotating shaft 28 and the lower support plate 27 to rotate. Using this method, after the stamping is completed, as the lifting plate 24 moves down, the lower support plate 27 will rotate after the second gear 20 moves down to contact the second rack 21 (not immediately at the beginning). When it continues to move down, the lower support plate 27 will rotate, and finally move down to the lowest position, as shown... Figure 9 As shown, the lower support plate 27 is inclined at this time. With this method, even if a small number of burrs fall off due to movement (there will be some vibration during the movement of the steel) on the lower end face of the stamped profile, they will slide away with the inclined surface. When the lower support plate 27 moves up again to support it, the debris will not damage the lower end face of the C-shaped section.

[0029] The system also includes a shaking mechanism, which comprises multiple cams 32 fixedly connected to a bidirectional threaded rod 31. The cams 32 are evenly spaced along the axial direction of the bidirectional threaded rod 31. The eccentric profile of each cam 32 undergoes periodic height changes during rotation. Multiple support wheels 33 are fixedly connected to the lower end of the lifting plate 24, each engaging with a corresponding cam 32. The support wheels 33 engage with the eccentric profile of the cam 32 through rolling contact, reducing the frictional resistance between the cam 32 and the lifting plate 24. The shaking mechanism operates only when the lifting plate 24 is near its lowest position (slightly above the lowest position). At this time, the lower end face of the lifting plate 24 partially contacts the rotating cam 32, engaging with the support wheels. The resetting action of the support spring 38 causes the lifting plate 24 to vibrate back and forth. In this way, vibration occurs at the end of the return movement of the lifting plate 24 and at the beginning of the upward movement of the lifting plate 24. This vibration is transmitted to the lower support plate 27, causing the support plate 27 to vibrate, which makes it easier for any burrs on it to fall off. At the same time, the vibration can also make the support plate 27 swing slightly by utilizing the cooperation of the second gear 20 and the second rack 21, further improving the removal effect of burrs and debris. Specifically, the vibration and swing of the lower support plate 27 work together to make the burrs and debris attached to the surface of the lower support plate 27 be thrown off by inertial force. At the same time, the swing causes the tilt angle of the lower support plate 27 to change periodically, accelerating the debris to slide off the inclined surface and be discharged.

[0030] The system also includes a debris collection mechanism, which includes a collection trough 29 on one side wall of the drive trough 23. The collection trough 29 is used to collect burr debris that slides down the inclined surface of the lower support plate 27 and guides the debris to move in the discharge direction. The inner bottom surface of the collection trough 29 is inclined. A baffle 30 is fixedly connected to the opening of the collection trough 29 on the side away from the drive trough 23. The baffle 30 is used to block the outer opening of the collection trough 29 to prevent burr debris from falling from the side. The lower support plate 27 has multiple first discharge ports 40, the lifting plate 24 has multiple second discharge ports 41, the inner bottom of the drive trough 23 has a drop port 25, and the upper end of the support base 5 is fixedly connected to a collection box 15. The punching debris will eventually be discharged from the first discharge ports 40, the second discharge ports 41 and the drop port 25 and fall into the collection box 15 for centralized cleaning and treatment, preventing debris from scattering around the equipment and causing pollution.

[0031] The working principle of this invention is as follows: The coiled steel to be formed is intermittently conveyed by the feeding mechanism, stopping after each station step. First, the steel is rolled into a C-shaped section by the rolling mill 1. Then, the formed profile enters the punching machine 2 along the steel entry direction. The profile enters the guide space within the connecting seat 10, which is formed by the T-shaped through groove 12, the horizontal through groove 14, and the fixing strip 22. The horizontal edges on both sides of the profile rest on the inner bottom of the T-shaped through groove 12, achieving lateral restraint and longitudinal support. The lower end face of the C-shaped section maintains a suspended distance from the inner bottom of the horizontal through groove 14, preventing contact, awaiting the punching operation.

[0032] After the profile stops in place, the hydraulic telescopic rod 6 drives the lifting module 7 to move downwards along multiple guide pillars 8. The extension plates 16 on both sides of the lifting module 7 move downwards synchronously, causing the first rack 17 at the lower end of the extension plate 16 to move downwards. The first rack 17 meshes with the corresponding first gear 19, causing the first gear 19 to rotate. The rotation of the first gear 19 is amplified by the speed-increasing gearbox 18 and transmitted to the bidirectional threaded rod 31, driving the bidirectional threaded rod 31 to rotate. Since the threads at both ends of the bidirectional threaded rod 31 rotate in opposite directions, the two wedge-shaped sliding seats 35 slide towards each other along the bottom of the drive groove 23, and the horizontal sliding plate 34 provides guidance and limit for the horizontal movement of the wedge-shaped sliding seats 35.

[0033] The wedge-shaped surfaces of the two wedge-shaped sliding seats 35 cooperate with the wedge-shaped surfaces of the two wedge-shaped abutting seats 36, converting the relative motion in the horizontal direction into the vertical upward motion of the lifting plate 24. The lifting plate 24 slides upward along the lifting column 37, causing the multiple support bars 26 and the lower support plate 27 on it to move upward synchronously. The lower support plate 27 pushes the profile upward, causing the profile to move upward as a whole until the inner bottom of the C-shaped section contacts the lower end face of the fixing bar 22. At this time, the profile is clamped between the upper end face of the lower support plate 27 and the lower end face of the fixing bar 22, and is effectively constrained in the vertical direction of the punching area.

[0034] When the lifting plate 24 reaches the highest position, the two wedge-shaped sliding seats 35 and the two wedge-shaped abutting seats 36 change from inclined surface contact to horizontal surface contact, forming a self-locking state, so that the lifting plate 24 remains stable at the highest position and does not give way due to the impact force of the punching.

[0035] Subsequently, the hydraulic telescopic rod 6 continues to drive the lifting module 7 downward. Multiple punching cutters 13 pass through the corresponding through-holes 39 on the fixing strip 22, and the inner wall of the through-holes 39 provides auxiliary guidance for the punching cutters 13. The cutting edge of the punching cutter 13 contacts the horizontal part of the C-shaped section, completing the punching and punching out multiple elliptical holes in the C-shaped section. At this stage, the first gear 19 is still rotating, but the wedge-shaped sliding seat 35 and the wedge-shaped abutment seat 36 are in horizontal self-locking contact, and the lifting plate 24 no longer continues to move upward, maintaining stable clamping of the profile.

[0036] After punching is completed, the hydraulic telescopic rod 6 drives the lifting module 7 to begin its upward return stroke. At this time, the lifting plate 24 is still in its highest position, and the profile is still stably clamped between the upper end face of the lower support plate 27 and the lower end face of the fixing strip 22. The punching cutter 13 moves upward with the lifting module 7. During the return stroke, there is a normal contact force between the side wall of the punching cutter 13 and the hole wall caused by the elastic rebound of the material. This normal contact force causes an upward frictional force between the side wall of the punching cutter 13 and the hole wall. However, since the profile is firmly clamped by the lower support plate 27 and the fixing strip 22 in the punching area, it cannot be displaced in the vertical direction. The frictional force is completely balanced by the clamping force, and the profile remains stationary in the punching area. The punching cutter 13 can only be forcibly pulled out of the hole, and the profile will not bend upwards, thus avoiding plastic tightening deformation of the hole wall due to asymmetrical stress. In this process, the first rack 17 drives the first gear 19 to rotate in the opposite direction, which is transmitted to the bidirectional threaded rod 31 to rotate in the opposite direction through the gearbox 18. The two wedge-shaped sliding seats 35 slide back to back along the bottom of the drive groove 23. At this time, the wedge-shaped sliding seats 35 and the wedge-shaped abutment seats 36 are still in planar contact.

[0037] After the punch 13 is completely separated from the hole, the two wedge-shaped sliding seats 35 and the wedge-shaped abutment seats 36 come into contact with each other and move relative to each other. Under the elastic restoring force of the support spring 38, the lifting column 37 drives the lifting plate 24 to begin to reset downwards, and the profile is released and returns to the state where it is supported at the bottom of the T-shaped through groove 12 by the horizontal edges on both sides and the lower end of the C-shaped section is suspended.

[0038] During the aforementioned process, the frictional force generated during the return stroke of the punching cutter 13 remains within the contact section between the punching cutter 13 and the hole wall. The bending tendency of the profile caused by this frictional force does not occur in the punching area but is transferred to the feeding and discharging sections of the punching machine 2. These sections are far from the punching station, where the profiles are either unpunched or have already been punched, and the holes are far from the bending point. Even if minor elastic bending deformation occurs in these sections, because the profiles in these areas are not rigidly constrained by the punching cutter 13, a positive feedback effect of asymmetrical stress on the hole wall will not form. The bending is merely an elastic deflection of the entire profile, which can naturally recover after the external force is released, without causing any irreversible plastic deformation. Furthermore, this elastic bending does not involve the already punched area, and the geometry and dimensional accuracy of the hole remain unaffected.

[0039] During the downward reset of the lifting plate 24, the second gear 20 on the rotating shaft 28 moves downward synchronously with the lifting plate 24. When the second gear 20 moves downward and contacts the stationary second rack 21, it continues to move downward, rolling along the second rack 21 and driving the rotating shaft 28 to rotate. This causes the lower support plate 27 to rotate around the rotating shaft 28, gradually changing from a horizontal state to an inclined state. When the lifting plate 24 reaches its lowest position, the lower support plate 27 is inclined, with its inclination direction facing the material discharge port 25. In this state, a small amount of burrs and debris remaining on the surface of the lower support plate 27 after punching slides off the inclined surface and is discharged under the action of gravity.

[0040] When the lifting plate 24 is near its lowest position, the eccentric profiles of the multiple cams 32 on the bidirectional threaded rod 31 make rolling contact with the multiple support wheels 33 at the lower end of the lifting plate 24. As the cams 32 rotate continuously with the bidirectional threaded rod 31, their eccentric profiles undergo periodic height changes. Combined with the elastic restoring force of the support spring 38, this causes the lifting plate 24 to reciprocate with slight vibrations. This vibration is transmitted to the lower support plate 27, and simultaneously, the engagement of the second gear 20 and the second rack 21 causes the lower support plate 27 to oscillate slightly. The combined effect of the vibration and oscillation causes burrs and debris adhering to the surface of the lower support plate 27 to be flung off due to inertia. Simultaneously, the periodic changes in the tilt angle of the lower support plate 27 accelerate the sliding of debris along the inclined surface. This process also occurs in the initial stage of the next upward movement of the lifting plate 24.

[0041] The burrs and debris that are thrown off and slide down enter the collection trough 29 along the inclined surface of the lower support plate 27. The inner bottom surface of the collection trough 29 is inclined, guiding the debris towards the discharge port 25. The baffle 30 blocks the outer opening of the collection trough 29 to prevent the debris from scattering laterally. The debris also falls step by step through the first discharge port 40 on the lower support plate 27 and the second discharge port 41 on the lifting plate 24, and is finally discharged through the discharge port 25 at the bottom of the drive trough 23, falling into the collection box 15 at the upper end of the support base 5 for centralized collection.

[0042] After the lifting plate 24 returns to its downward reset position, the lower support plate 27 no longer contacts the lower end face of the C-shaped section of the profile. The profile is released and returns to its state where it rests on the bottom of the T-shaped channel 12 with its horizontal edges on both sides. At this time, the lower end face of the C-shaped section of the profile and the bottom of the horizontal channel 14 are restored to a suspended distance, and the lower end face of the C-shaped section does not contact any supporting or structural surface. The feeding mechanism then drives the profile forward along the steel entry direction to the next station. Throughout the entire forward movement of the profile, its load-bearing and movement rely entirely on the horizontal edges on both sides resting on the bottom of the T-shaped channel 12. The lower end face of the C-shaped section remains suspended, without contact or friction with any surface. Because the lower end face of the punched hole has downward-protruding burrs, and these burr surfaces remain suspended and non-contact throughout the movement, the burrs will not rub against any supporting surface. Therefore, burr particles will not fall onto the supporting surface due to friction, preventing them from scratching the surface of subsequent sections of the profile. The profile is continuously conveyed forward in this suspended state until it enters the belt polishing machine 3 for uniform grinding and removal of burrs on the lower end face, and finally cut by the cutting machine 4 into single C45 guide rail finished products according to the preset length.

[0043] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A guide rail roll forming equipment, characterized in that, include: Roller (1), punching machine (2), belt polishing machine (3) and cutting machine (4) are arranged in sequence along the direction of steel entry. By forming first and then punching, the number of defective products can be effectively reduced. The punching machine (2) includes a support base (5), with multiple guide pillars (8) fixedly connected to the upper end of the support base (5). A top plate (11) is fixedly connected to the upper end of the multiple guide pillars (8). A hydraulic telescopic rod (6) is fixedly connected to the lower end of the top plate (11). A lifting module (7) is fixedly connected to the telescopic end of the hydraulic telescopic rod (6). The multiple guide pillars (8) all pass through the lifting module (7) and are slidably connected. Multiple punching cutters (13) are fixedly connected to the lower end of the lifting module (7). A fixing plate (9) is fixedly connected to the multiple guide pillars (8). A connecting rod is fixedly connected to the upper end of the fixing plate (9). The connecting seat (10) has a T-shaped through groove (12) and a horizontal through groove (14) through it along the direction of the steel entry. The bottom of the horizontal through groove (14) has a drive groove (23). The top of the T-shaped through groove (12) is fixedly connected to a fixing strip (22). The fixing strip (22) has multiple through holes (39) that cooperate with the punching knife (13). The drive groove (23) has a support member inside. When the lifting module (7) moves down, the support member will move up automatically through the drive mechanism and push the steel to be punched upward until the other side of the steel contacts the lower end face of the fixing strip (22).

2. The guide rail roll forming equipment according to claim 1, characterized in that, The T-shaped through groove (12), the horizontal through groove (14) and the fixing strip (22) together form a guide space, which is used for the rolled profile to pass through.

3. The guide rail roll forming equipment according to claim 1, characterized in that, The drive mechanism includes extension plates (16) symmetrically fixedly connected to both sides of the lifting module (7). The lower ends of the two extension plates (16) are fixedly connected to the first rack (17). The two sides of the connecting seat (10) are equipped with gearboxes (18). The input ends of the two gearboxes (18) are fixedly connected to the first gears (19). The two first gears (19) mesh with the corresponding first racks (17).

4. The guide rail roll forming equipment according to claim 3, characterized in that, The drive mechanism also includes a bidirectional threaded rod (31) rotatably connected between the inner walls of both sides of the drive groove (23). Both threaded ends of the bidirectional threaded rod (31) are threadedly connected to wedge-shaped sliding seats (35). Horizontal sliding plates (34) are fixedly connected to the opposite sides of the two wedge-shaped sliding seats (35). The lower end faces of the two wedge-shaped sliding seats (35) are slidably connected to the inner bottom of the drive groove (23). Both ends of the bidirectional threaded rod (31) extend to the outside and are fixedly connected to the output end of the corresponding gearbox (18).

5. The guide rail roll forming equipment according to claim 4, characterized in that, The support includes a lifting plate (24), and two wedge-shaped abutment seats (36) are symmetrically fixedly connected to the lower end of the lifting plate (24). The two wedge-shaped abutment seats (36) are respectively engaged with two wedge-shaped sliding seats (35).

6. The guide rail roll forming equipment according to claim 5, characterized in that, The lower end of the wedge-shaped abutment seat (36) is fixedly connected to multiple lifting columns (37), and the inner bottom of the drive groove (23) is fixedly connected to multiple connecting cylinders (42). The lower ends of the multiple lifting columns (37) extend into the interior of the connecting cylinders (42), and the lower ends of the multiple lifting columns (37) are elastically connected to the inner bottom of the corresponding connecting cylinders (42) through support springs (38).

7. The guide rail roll forming equipment according to claim 5, characterized in that, The support also includes a rotating shaft (28) rotatably connected to one side of the lifting plate (24). Multiple support bars (26) are fixedly connected at equal intervals at the upper end of the lifting plate (24). A lower support plate (27) is provided above the lifting plate (24). The rotating shaft (28) passes through one side of the lower support plate (27) and is fixedly connected.

8. The guide rail roll forming equipment according to claim 7, characterized in that, The drive groove (23) has a vertical strip opening on the side near where the steel enters. One end of the rotating shaft (28) passes through the vertical strip opening and is fixedly connected to the second gear (20). The connecting seat (10) is fixedly connected to the second rack (21) on the side near where the steel enters. The second rack (21) meshes with the second gear (20).

9. The guide rail roll forming equipment according to claim 8, characterized in that, It also includes a shaking mechanism, which includes multiple cams (32) fixedly connected to a bidirectional threaded rod (31), and multiple support wheels (33) fixedly connected to the lower end of the lifting plate (24), with each support wheel (33) cooperating with a corresponding cam (32).

10. A guide rail roll forming equipment according to claim 8, characterized in that, It also includes a debris collection mechanism, which includes a collection trough (29) opened on one side wall of the drive trough (23). The inner bottom surface of the collection trough (29) is inclined. A baffle (30) is fixedly connected to the trough opening on the side away from the drive trough (23). Multiple first discharge ports (40) are opened on the lower support plate (27). Multiple second discharge ports (41) are opened on the lifting plate (24). A drop port (25) is opened at the inner bottom of the drive trough (23). A collection box (15) is fixedly connected to the upper end of the support base (5).

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