L-shaped angle steel processing and forming equipment for fireproof air duct production

Abstract

This invention relates to the field of angle steel processing and discloses an L-shaped angle steel processing and forming equipment for fireproof air duct production. The equipment includes a machine body, with baffles fixedly connected to the upper end of the machine body. The baffles are connected to each other via connecting shaft bolts, and mounting seats are bolted between adjacent baffles. Drive rollers are bolted between the mounting seats. The drive rollers are divided into upper and lower groups, with an upper pressure roller and a lower pressure roller fixedly connected to the outside of the upper and lower drive rollers, respectively. The surface of the lower pressure roller is provided with an anti-deviation component to prevent steel strip misalignment. The anti-deviation component includes a first groove on the surface of the lower pressure roller, with a limiting shaft slidably connected inside the first groove. A limiting block is fixedly connected to the middle of the limiting shaft. The limiting shaft applies a reaction force to the bent edge of the steel strip, pushing the steel strip back to its original position, so that the bent edges on both sides of the steel strip can simultaneously contact the limiting shaft, preventing the steel strip from shifting during the forming process and ensuring the quality of the angle steel forming.

Description

Technical Field

[0001] This invention relates to the field of angle steel processing technology, and more specifically, to an L-shaped angle steel processing and forming equipment for fireproof air duct production. Background Technology

[0002] Fireproof air ducts are made of non-combustible or fire-resistant materials and can maintain structural integrity and heat insulation for a certain period of time (such as 0.5-3 hours) during a fire. They are used to suppress the spread of fire and ensure the normal operation of ventilation and smoke exhaust systems.

[0003] Fireproof air ducts require angle steel for assembly and connection during production, and angle steel is formed by extruding steel strips into an L-shape using forming equipment.

[0004] In the production of angle steel, equipment vibration and the squeezing of the upper and lower pressure rollers can cause the steel strip to shift during the conveying process, resulting in uneven distribution on both sides of the formed angle steel, causing workpiece size errors, increasing the surface roughness of the angle steel, and producing defects such as vibration marks or wavy lines. Summary of the Invention

[0005] This invention provides an L-shaped angle steel processing and forming equipment for fireproof air duct production, which solves the technical problems in related technologies where displacement of the steel strip leads to errors in the forming of the angle steel and surface defects.

[0006] This invention provides a processing and forming equipment for L-shaped angle steel used in the production of fireproof air ducts, including a machine body. A baffle is fixedly connected to the upper end of the machine body, and the baffles are connected to each other by connecting shaft bolts. An mounting seat is bolted between adjacent baffles, and a drive roller is bolted between the mounting seats. The drive roller is divided into upper and lower groups, and an upper pressure roller and a lower pressure roller are fixedly connected to the outside of the upper and lower drive rollers respectively.

[0007] The surface of the lower pressure roller is provided with an anti-deviation component to prevent the steel strip from being misaligned. The anti-deviation component includes a first groove formed on the surface of the lower pressure roller, and a limiting shaft is slidably connected inside the first groove. A limiting block is fixedly connected to the middle of the limiting shaft. A second groove adapted to the limiting block is formed on the inner wall of the first groove. A spring is fixedly connected between the limiting block and the first groove.

[0008] As a further optimization of the present invention, the lower pressure roller is provided with an oil spraying assembly. The oil spraying assembly includes a first compression air bladder fixedly connected to the bottom of the limiting block. An oil spraying port is opened on the surface of the limiting shaft, and a piston plate is movably connected inside the limiting shaft. The piston plate and the oil spraying port are symmetrically distributed from the end of the limiting shaft to the center area.

[0009] As a further optimization of the present invention, a fixed disk is fixedly connected inside the limiting shaft on the right side, and an air guide tube is fixedly passed through the middle of the fixed disk, and the first compression inflation bag, the limiting block and the limiting shaft are connected to each other.

[0010] As a further optimization of the present invention, a stable cooling component is provided outside the limiting shaft. The stable cooling component includes a rotating ring rotatably connected to the outside of the limiting shaft by means of a damping bearing, and a rotating arm is fixedly connected to the outside of the rotating ring. A retaining ring is fixedly connected to the end of the rotating arm.

[0011] As a further optimization of the present invention, the inside of the rotating arm is provided with a storage cavity, and a second compression air bladder connected to the storage cavity is fixedly connected inside the rotating arm. One end of the second compression air bladder is fixedly connected with a one-way valve and the other end extends to the inner ring of the rotating ring. A top block is fixedly connected to the surface of the drive roller, and a liquid spraying port is provided on the surface of the rotating arm.

[0012] As a further optimization of the present invention, the spray nozzle is inclined at a 30-degree angle toward the center of the drive roller, and the distance between the center of the rotating ring and the retaining ring is the same as the distance between the centers of the upper and lower drive rollers.

[0013] As a further optimization of the present invention, a first cutting unit and a second cutting unit are respectively provided on both sides of the upper end of the machine body, and a leveling unit is also provided at the upper end of the machine body.

[0014] As a further optimization of the present invention, a synchronous cutting assembly is provided inside the second cutting unit. The synchronous cutting assembly includes a synchronous box disposed inside the second cutting unit, and a lower pressure plate is movably connected inside the synchronous box. A stepper motor and a fixed base are respectively fixedly connected to the lower ends of the lower pressure plate, and a lead screw is rotatably connected between the output shaft of the stepper motor and the fixed base. A third sliding groove is provided at the lower end of the lower pressure plate, and a cutter is screw-driven to the outside of the lead screw. A slider that matches the third sliding groove is fixedly connected to the upper end of the cutter.

[0015] As a further optimization of the present invention, the moving speed of the cutter on the surface of the lead screw is consistent with the moving speed of the steel strip during the forming process of the angle steel.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. The L-shaped angle steel processing and forming equipment for fireproof air duct production described in this invention applies a reaction force to the bent edge of the steel strip through a limiting shaft, pushing the steel strip to reset, so that the bent edges on both sides of the steel strip can contact the limiting shaft at the same time, avoiding the steel strip from shifting during the forming process and ensuring the forming quality of the angle steel.

[0018] 2. The L-shaped angle steel processing and forming equipment for fireproof air duct production described in this invention reduces the friction between the lower pressure roller and the steel strip by using lubricating oil, thereby reducing the wear on the surface of the steel strip during extrusion forming, reducing the probability of defects such as roughness and burrs on the surface of the angle steel after forming, improving the forming quality of the angle steel, and adjusting the spraying area of ​​the lubricating oil according to the bending angle of the steel strip to ensure stable lubrication of the steel strip surface.

[0019] 3. The L-shaped angle steel processing and forming equipment for fireproof air duct production described in this invention limits the upper and lower drive rollers by means of a rotating ring, rotating arm and retaining ring, preventing the upper and lower pressure rollers from shifting due to vibration during the extrusion forming process, thereby ensuring stable extrusion of the steel strip.

[0020] 4. The L-shaped angle steel processing and forming equipment for fireproof air duct production described in this invention uses sprayed coolant to cool the surface of the steel strip, thereby preventing the steel strip from deforming due to temperature rise caused by pressure friction during the rolling process, reducing the forming quality caused by steel strip deformation, and improving the forming quality of angle steel.

[0021] 5. The L-shaped angle steel processing and forming equipment for fireproof air duct production described in this invention uses a cutter that moves on the surface of a lead screw and maintains the same displacement speed as the angle steel. Then, under the action of a hydraulic cylinder in the second cutting unit, the lower pressure plate is pushed to move the cutter downward to cut the angle steel, achieving non-stop cutting of the angle steel. This ensures the continuity of angle steel forming and improves the forming efficiency. At the same time, the cutting range of the angle steel is limited to the inside of the synchronization box, so that both ends of the cutting point are supported by the synchronization box, thereby reducing the deformation of the angle steel during cutting, improving the flatness of the angle steel cut, and further improving the production quality of the angle steel. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a combined view of the upper and lower pressure rollers of the present invention;

[0024] Figure 3 This is a partial structural diagram of the anti-offset component of the present invention;

[0025] Figure 4 This is a schematic diagram of the first structure of the fuel injection assembly of the present invention;

[0026] Figure 5 This is a schematic diagram of the second structure of the fuel injection assembly of the present invention;

[0027] Figure 6 This is a schematic diagram of the stable cooling component structure of the present invention;

[0028] Figure 7 This is a cross-sectional view of the synchronization box of the present invention;

[0029] Figure 8 This is a partial structural diagram of the synchronous cutting component of the present invention.

[0030] In the picture:

[0031] 10. Machine body; 11. First cutting unit; 12. Leveling unit; 13. Baffle; 14. Connecting shaft; 15. Mounting base; 16. Drive roller; 17. Upper pressure roller; 18. Lower pressure roller; 19. Second cutting unit;

[0032] 20. Anti-deviation component; 21. First slide groove; 22. Limiting shaft; 23. Limiting block; 24. Second slide groove; 25. Spring;

[0033] 30. Fuel injection assembly; 31. First compression airbag; 32. Piston plate; 33. Fuel injector; 34. Fixed plate; 35. Air guide pipe;

[0034] 40. Stabilizing cooling component; 41. Rotating ring; 42. Rotating arm; 43. Snap ring; 44. Damping bearing; 45. Storage chamber; 46. Second compression inflation bladder; 47. One-way valve; 48. Top block; 49. Liquid spray nozzle;

[0035] 50. Synchronous cutting assembly; 51. Synchronous box; 52. Lower pressure plate; 53. Stepper motor; 54. Fixing base; 55. Lead screw; 56. Cutting blade; 57. Slider; 58. Third slide groove. Detailed Implementation

[0036] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0037] like Figures 1 to 3As shown, an embodiment of the present invention provides an L-shaped angle steel processing and forming equipment for fireproof air duct production, comprising a machine body 10, a baffle 13 fixedly connected to the upper end of the machine body 10, and the baffles 13 being bolted together by a connecting shaft 14, an mounting seat 15 being bolted between adjacent baffles 13, and a drive roller 16 being bolted between the mounting seats 15, the drive roller 16 being divided into upper and lower groups, an upper pressure roller 17 and a lower pressure roller 18 being fixedly connected to the outside of the upper and lower drive rollers 16 respectively, a first cutting unit 11 and a second cutting unit 19 being respectively provided on both sides of the upper end of the machine body 10, and a leveling unit 12 being provided at the upper end of the machine body 10;

[0038] The surface of the lower pressure roller 18 is provided with an anti-deviation component 20 to prevent the steel strip from being misaligned. The anti-deviation component 20 includes a first groove 21 opened on the surface of the lower pressure roller 18, and a limiting shaft 22 is slidably connected inside the first groove 21. A limiting block 23 is fixedly connected to the middle of the limiting shaft 22. A second groove 24 adapted to the limiting block 23 is opened on the inner wall of the first groove 21. A spring 25 is fixedly connected between the limiting block 23 and the first groove 21.

[0039] It should be noted that the steel strip is sequentially passed from the first cutting unit 11 and the leveling unit 12 on the left side to between the upper pressure roller 17 and the lower pressure roller 18 in the machine body 10. The leveling unit 12 is used to flatten the steel strip. Then, under the drive of the motor, multiple gears are driven to rotate through the chain, and the upper pressure roller 17 and the lower pressure roller 18 are driven to rotate through the gears. The upper pressure roller 17 and the lower pressure roller 18 squeeze the steel strip and convey it to the right under the action of friction. It should be noted that the groove angle of the upper pressure roller 17 gradually decreases to ninety degrees from left to right. Thus, the steel strip is squeezed into an L-shaped angle steel by the upper pressure roller 17 and the lower pressure roller 18. The formed angle steel is continuously conveyed to the right. According to the required length, the formed angle steel is cut by the second cutting unit 19. After the production is completed, the steel strip is cut by the first cutting unit 11, thus completing the forming operation of the angle steel.

[0040] During the extrusion forming of angle steel, the two sides of the steel strip bend after being extruded. The rotation of the lower pressure roller 18 causes the bent side of the steel strip to contact the limiting shaft 22 on the lower pressure roller 18. When the steel strip shifts during extrusion, or when the right side of the bent edge contacts the limiting shaft 22, the limiting shaft 22 is subjected to the thrust of the bent edge of the steel strip. However, because a limiting block 23 is provided in the middle of the limiting shaft 22, and the limiting block 23 is restricted by the second slide groove 24 to only move vertically up and down, the limiting shaft 22 cannot be... The steel strip is pressed down at the bent edge, and at the same time, the limiting shaft 22 applies a reaction force to the bent edge of the steel strip, pushing the steel strip to reset. This allows the bent edges on both sides of the steel strip to contact the limiting shaft 22 simultaneously. As the bending angle of the steel strip gradually increases, the bent edges on both sides of the steel strip simultaneously squeeze the limiting shaft 22, causing the limiting block 23 to slide inside the second slide groove 24, which in turn drives the limiting shaft 22 to slide synchronously inside the first slide groove 21, until the lower pressure roller 18 rotates and causes the limiting shaft 22 to separate from the steel strip. Then, under the action of the spring 25, the limiting block 23 and the limiting shaft 22 are pushed to reset.

[0041] like Figures 3 to 4 As shown, the lower pressure roller 18 is equipped with an oil spraying assembly 30. The oil spraying assembly 30 includes a first compression airbag 31 fixedly connected to the bottom of the limiting block 23. An oil spraying port 33 is opened on the surface of the limiting shaft 22, and a piston plate 32 is movably connected inside the limiting shaft 22. The piston plate 32 and the oil spraying port 33 are symmetrically distributed from the end of the limiting shaft 22 to the center area. A fixed plate 34 is fixedly connected inside the right limiting shaft 22, and an air guide pipe 35 is fixedly passed through the middle of the fixed plate 34. The first compression airbag 31, the limiting block 23 and the limiting shaft 22 are connected.

[0042] It should be noted that when the lower pressure roller 18 drives the limiting shaft 22 to contact the bent edge of the steel strip, the contact position between the limiting shaft 22 and the steel strip is not yet fully squeezed by the lower pressure roller 18. Therefore, as the lower pressure roller 18 drives the limiting shaft 22 to continue rotating, when the limiting shaft 22 is squeezed by the bent edge of the steel strip and slides along the inside of the first slide groove 21, the limiting block 23 will squeeze the first compression air bladder 31, thereby using the first compression air bladder 31 to inflate the limiting shaft 22, and under the action of air pressure, push the piston plate 32 to slide inside the limiting shaft 22, thereby spraying the lubricating oil inside the limiting shaft 22 out through the oil spray nozzle 33 and spraying it onto the bent surface of the steel strip until the steel strip is fully squeezed by the lower pressure roller 18. The lubricating oil reduces the friction between the lower pressure roller 18 and the steel strip, reduces the wear on the surface of the steel strip during extrusion molding, reduces the probability of defects such as roughness and burrs on the surface of the angle steel after molding, and improves the molding quality of the angle steel.

[0043] In addition, as the bending angle of the steel belt gradually increases during the conveying process from left to right, the bent edge of the steel belt gradually moves closer to the middle of the limiting shaft 22. Therefore, the oil injection port 33 on the left is opened near the end of the limiting shaft 22, while the oil injection port 33 on the right is opened near the middle of the limiting shaft 22. The position of the piston plate 32 inside the limiting shaft 22 is adjusted, moving the piston plate 32, which was originally close to the middle of the limiting shaft 22, to a position close to the end of the limiting shaft 22. A fixing plate 34 is installed at the original position of the piston plate 32 to isolate the inside of the limiting shaft 22. Then, the gas injected into the limiting block 23 by the first compressed air bag 31 is guided to the end of the limiting shaft 22 through the air guide pipe 35, thereby pushing the piston plate 32 at the end to move inside the limiting shaft 22 and discharge the lubricating oil from the oil injection port 33 near the middle of the limiting shaft 22, thus completing the lubrication of the steel belt surface.

[0044] like Figure 2 and Figure 6 As shown, a stabilizing cooling assembly 40 is provided outside the limiting shaft 22. The stabilizing cooling assembly 40 includes a rotating ring 41 that is rotatably connected to the outside of the limiting shaft 22 by means of a damping bearing 44, and a rotating arm 42 is fixedly connected to the outside of the rotating ring 41. A retaining ring 43 is fixedly connected to the end of the rotating arm 42.

[0045] The rotating arm 42 has a storage cavity 45 inside, and a second compression air bladder 46 connected to the storage cavity 45 is fixedly connected inside the rotating arm 42. One end of the second compression air bladder 46 is fixedly connected to a one-way valve 47 and the other end extends to the inner ring of the rotating ring 41. A top block 48 is fixedly connected to the surface of the drive roller 16, and a liquid spraying port 49 is opened on the surface of the rotating arm 42.

[0046] The spray nozzle 49 is inclined at a 30-degree angle toward the center of the drive roller 16, and the distance between the center of the rotating ring 41 and the retaining ring 43 is the same as the distance between the centers of the upper and lower drive rollers 16.

[0047] It should be noted that when the drive roller 16 rotates, the lower drive roller 16 drives the rotating ring 41 to rotate synchronously until the rotating ring 41 drives the retaining ring 43 on the rotating arm 42 to engage with the surface of the upper drive roller 16. This utilizes the rotating ring 41, rotating arm 42, and retaining ring 43 to limit the movement of the upper and lower drive rollers 16, preventing the upper pressure roller 17 and lower pressure roller 18 from shifting due to vibration during the extrusion molding process, thus ensuring stable extrusion of the steel strip. Afterward, as the lower drive roller 16 continues to rotate, the rotating ring 41 rotates relative to the lower drive roller 16 via the damping bearing 44, while the rotating ring 41, rotating arm 42, and retaining ring 43 remain vertically stationary. When the lower drive roller 16 rotates, it drives the top block 48 to make a circular motion. The top block 48 intermittently presses against the second compression air bladder 46, thereby filling the storage cavity 45 with gas. Under the action of air pressure, the coolant inside the storage cavity 45 is sprayed out through the spray nozzle 49. Since the spray nozzle 49 is inclined at 30 degrees towards the middle of the drive roller 16, the sprayed coolant is sprayed onto the surface of the steel strip, thereby cooling the rolled steel strip and preventing the steel strip from deforming due to the temperature rise caused by pressure friction during the rolling process. This reduces the forming quality caused by the deformation of the steel strip and improves the forming quality of the angle steel.

[0048] like Figure 1 , Figure 7 and Figure 8 As shown, a synchronous cutting assembly 50 is provided inside the second cutting unit 19. The synchronous cutting assembly 50 includes a synchronous box 51 disposed inside the second cutting unit 19, and a lower pressure plate 52 is movably connected inside the synchronous box 51. A stepper motor 53 and a fixed seat 54 are fixedly connected to the lower ends of the lower pressure plate 52, respectively. A lead screw 55 is rotatably connected between the output shaft of the stepper motor 53 and the fixed seat 54. A third slide groove 58 is provided at the lower end of the lower pressure plate 52. A cutter 56 is screw-driven to the outside of the lead screw 55, and a slider 57 adapted to the third slide groove 58 is fixedly connected to the upper end of the cutter 56. The moving speed of the cutter 56 on the surface of the lead screw 55 is consistent with the moving speed of the steel strip during the angle steel forming process.

[0049] It should be noted that after the angle steel is formed, when it is cut, the stepper motor 53 drives the lead screw 55 to rotate. Since the cutter 56 on the surface of the lead screw 55 is restricted by the slider 57 and the third slide groove 58 and cannot rotate, the cutter 56 moves on the surface of the lead screw 55 and maintains the same speed displacement as the angle steel. Then, under the action of the hydraulic cylinder in the second cutting unit 19, the lower pressure plate 52 is pushed to drive the cutter 56 to move down to cut the angle steel, realizing non-stop cutting of the angle steel, ensuring the continuity of angle steel forming, improving the forming efficiency of angle steel, and at the same time, the cutting range of the angle steel is restricted to the inside of the synchronization box 51, so that both ends of the cutting point are supported by the synchronization box 51, thereby reducing the deformation of the angle steel during cutting, improving the flatness of the angle steel cut, and further improving the production quality of the angle steel.

[0050] The embodiments of the present invention have been described above, but the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments described above, all of which are within the protection scope of the embodiments described above.

Claims

1. A processing and forming equipment for L-shaped angle steel used in the production of fireproof air ducts, comprising a machine body (10), characterized in that: The upper end of the machine body (10) is fixedly connected to a baffle (13), and the baffles (13) are bolted together by a connecting shaft (14). The adjacent baffles (13) are bolted together by a mounting seat (15), and the mounting seats (15) are bolted together by a drive roller (16). The drive roller (16) is divided into upper and lower groups, and the upper and lower drive rollers (16) are respectively fixedly connected to the outside of the upper and lower drive rollers (16). The surface of the lower pressure roller (18) is provided with an anti-deviation component (20) to prevent steel strip misalignment. The anti-deviation component (20) includes a first groove (21) opened on the surface of the lower pressure roller (18), and a limiting shaft (22) is slidably connected inside the first groove (21). A limiting block (23) is fixedly connected to the middle of the limiting shaft (22). A second groove (24) adapted to the limiting block (23) is opened on the inner wall of the first groove (21). A spring (25) is fixedly connected between the limiting block (23) and the first groove (21). The upper ends of the machine body (10) are provided with a first cutting unit (11) and a second cutting unit (19) respectively, and the upper end of the machine body (10) is also provided with a leveling unit (12). The inner side of the second cutting unit (19) is provided with a synchronous cutting assembly (50). The synchronous cutting assembly (50) includes a synchronous box (51) disposed inside the second cutting unit (19). The inner side of the synchronous box (51) is movably connected to a lower pressure plate (52). The lower end of the lower pressure plate (52) is fixedly connected to a stepper motor (53) and a fixed seat (54) respectively. The output shaft of the stepper motor (53) is rotatably connected to the fixed seat (54) with a lead screw (55). The lower end of the lower pressure plate (52) is provided with a third sliding groove (58). The lead screw (55) is externally connected to a cutter (56) with a spiral drive. The upper end of the cutter (56) is fixedly connected to a slider (57) that is compatible with the third sliding groove (58). The lower pressure roller (18) is provided with an oil spraying assembly (30). The oil spraying assembly (30) includes a first compression air bladder (31) fixedly connected to the bottom of the limiting block (23). The surface of the limiting shaft (22) is provided with an oil spraying port (33). A piston plate (32) is movably connected inside the limiting shaft (22). The piston plate (32) and the oil spraying port (33) are symmetrically distributed from the end of the limiting shaft (22) to the center area. The right-side limiting shaft (22) is internally fixedly connected to a fixed plate (34), and an air guide tube (35) is fixedly passed through the middle of the fixed plate (34). The first compressed air bag (31), the limiting block (23) and the limiting shaft (22) are connected to each other. The limiting shaft (22) is provided with a stabilizing cooling component (40) on its outside. The stabilizing cooling component (40) includes a rotating ring (41) rotatably connected to the outside of the limiting shaft (22) by means of a damping bearing (44), and a rotating arm (42) is fixedly connected to the outside of the rotating ring (41). A retaining ring (43) is fixedly connected to the end of the rotating arm (42).

2. The L-shaped angle steel processing and forming equipment for fireproof air duct production according to claim 1, characterized in that: The rotating arm (42) has a storage cavity (45) inside, and a second compression air bladder (46) connected to the storage cavity (45) is fixedly connected inside the rotating arm (42). One end of the second compression air bladder (46) is fixedly connected to a one-way valve (47) and the other end extends to the inner ring of the rotating ring (41). A top block (48) is fixedly connected to the surface of the drive roller (16), and a spray nozzle (49) is opened on the surface of the rotating arm (42).

3. The L-shaped angle steel processing and forming equipment for fireproof air duct production according to claim 2, characterized in that: The spray nozzle (49) is inclined at 30 degrees toward the center of the drive roller (16), and the distance between the center of the rotating ring (41) and the retaining ring (43) is the same as the distance between the center of the upper and lower drive rollers (16).

4. The L-shaped angle steel processing and forming equipment for fireproof air duct production according to claim 1, characterized in that: The moving speed of the cutter (56) on the surface of the lead screw (55) is consistent with the moving speed of the steel strip during the forming process of the angle steel.

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