A corrugated board iron plate box roll pressing, discharging and cutting device

Abstract

This invention discloses a roll forming and cutting device for corrugated sheet metal boxes, belonging to the field of metal forming machine tool technology. It includes a base platform and a roll forming main unit fixed thereon. The main unit's discharge end is equipped with a cutting device, which includes a gantry frame, an upper cutter holder, and a contouring base. A linkage support assembly is provided at the discharge port, with its drive unit connected to the side of the upper cutter holder. The support unit is located within the contouring base. A blow-off device is also installed on the gantry frame, with its air supply unit connected to the upper cutter holder's guide component. This invention utilizes the linkage support assembly to drive the support unit by the lifting action of the upper cutter holder. During feeding, the support unit lifts the sheet metal to prevent scratches; during cutting, it retracts to avoid damage and ensures support. The blow-off device automatically generates high-pressure airflow using the resetting kinetic energy of the upper cutter holder to clean accumulated debris from the base, effectively solving the problems of surface scratches and damage caused by debris accumulation, thus improving the quality of the finished product.

Description

Technical Field

[0001] This invention relates to the field of metal forming machine tool technology, and in particular to a roll forming and unloading cutting device for corrugated iron plate boxes. Background Technology

[0002] Currently, cold roll forming technology is widely used in the automated production of corrugated sheets such as iron boxes and container panels. To obtain sheets of a fixed length, a hydraulic cutting device is typically installed at the end of the production line. Due to the unique cross-sectional shape of corrugated sheets with its crests and troughs, and their considerable thickness, existing cutting machines typically employ a rigid mold (i.e., a wave-shaped base) that perfectly matches the cross-sectional shape of the corrugated sheet to ensure the flatness of the sheared section and prevent corrugation deformation. In the workflow, the corrugated sheet is conveyed along the roll forming line to the area above the lower cutter holder, where it is sheared by the upper cutter. This rigid mold provides high-tonnage rigid support for the shearing process, ensuring the quality of the cut.

[0003] However, the aforementioned existing technology has defects in practical use. Because the lower cutter holder adopts a fixed rigid contouring structure, during the feeding and length conveying of corrugated plates, the bottom surface of the plate slides and rubs against the wavy surface of the lower cutter holder. For iron plate boxes with galvanized or coated layers, this long-distance hard-on-hard sliding friction can easily scratch the anti-corrosion coating on the surface of the plate, resulting in scratches or zinc layer peeling off the finished product, affecting the appearance quality and corrosion resistance of the product. At the same time, the sliding friction resistance also increases the load on the front-end feeding motor.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0005] This invention provides a corrugated sheet and iron box roller pressing and unloading cutting device to solve the technical problem in the prior art where the lower knife holder adopts a fixed contour structure, which causes the corrugated sheet to easily generate sliding friction during transportation, thereby scratching the anti-corrosion coating on the sheet surface and increasing the transportation load.

[0006] The present invention adopts the following technical solution: a corrugated sheet iron box roll forming and unloading cutting device. It includes a base platform, on which a roll forming host is fixedly mounted; and a cutting device, disposed on the base platform and located at the discharge end of the roll forming host. The cutting device includes a gantry frame, a drive source, and an upper blade holder movably mounted on the gantry frame. An upper cutting blade is fixed at the bottom end of the upper blade holder. A contour base is fixed on the base platform. A linkage support assembly is provided at the discharge port of the cutting device, including a drive unit and a support unit. The drive unit is connected to the side of the upper blade holder, and the support unit is provided inside the contour base. The drive unit drives the support unit to move in accordance with the lifting and lowering motion of the upper blade holder, so as to avoid the plate during cutting. The blow-off device, installed on the gantry frame, includes an air supply unit with a telescopic structure and an injection unit. The air supply unit is connected to the guide component of the upper cutter holder. The reset stroke of the upper cutter holder drives the air supply unit to compress air to generate airflow. The air outlet of the injection unit faces the concave and convex surfaces of the contour base.

[0007] Furthermore, the cutting device also includes guide side rods fixed to both sides of the upper blade holder and movably extending into the two columns of the gantry frame. The two columns of the gantry frame have clearance grooves for vertical displacement of the guide side rods. The drive unit includes two guide seats symmetrically fixed to the sides of the upper blade holder. A protective cover is fixed to the surface of the guide seat. An active rack is fixed to the side of the guide seat and inside the protective cover. A transmission shaft is transversely inserted between the two protective covers. Both ends of the transmission shaft extend into the interior of the two columns of the gantry frame and are supported by side bearing seats fixed inside the two columns of the gantry frame. A transmission gear is fixedly sleeved on the transmission shaft, and the transmission gear meshes with the active rack.

[0008] Furthermore, the drive unit also includes a lifting guide plate fixed to the bottom surface of the guide side rod and a drive rack embedded in the side of the lifting guide plate. The contour base has an installation cavity inside. The support unit includes a lower support shaft that rotatably passes through the installation cavity and a drive gear fixed to the end of the lower support shaft. The two ends of the lower support shaft extend into the interior of the two columns of the gantry frame. The drive gear is located inside the gantry frame and meshes with the drive rack for transmission.

[0009] Furthermore, the support unit also includes a cam, a support block, a T-shaped top rod, a support wheel, and a return spring; the cam is provided with several cams along the straight direction of the lower support shaft and correspondingly located inside the protrusion of the contour base; the support block is fixed inside the protrusion of the contour base; the T-shaped top rod vertically penetrates the support block and abuts against the cam; the support wheel is fixed to the top end of the T-shaped top rod and partially protrudes from the surface of the contour base; the return spring is sleeved on the T-shaped top rod, and its two ends abut against the bottom surface of the support block and the bottom protrusion of the T-shaped top rod, respectively.

[0010] Furthermore, the air supply unit includes several fixed pipe clamps, a piston cylinder, a piston rod, and a right-angle bracket. The fixed pipe clamps are fixed at intervals along the vertical direction to the inner wall of the gantry frame. The piston cylinder is clamped and fixed inside the fixed pipe clamps. The right-angle bracket is fixed to the bottom end of the guide rod. The bottom end of the piston rod is vertically connected to the horizontal part of the right-angle bracket, and the top end is sealed and slides into the inside of the piston cylinder. When the piston rod moves upward and resets with the upper cutter holder and the guide rod, it performs piston movement inside the piston cylinder to compress air.

[0011] Furthermore, the injection unit includes an exhaust pipe, an intake port, a Y-shaped connector, a support base, and an injection pipe; the input end of the exhaust pipe is connected to the top of the piston cylinder, and the output end extends to the outside of the gantry frame; the intake port is located on the top of the piston cylinder and allows unidirectional air intake; the body of the exhaust pipe is fixed to the outer surface of the gantry frame by a clamp; two support bases are symmetrically fixed on both sides of the contour base; two injection pipes are horizontally mounted between the two support bases in a parallel vertical arrangement and are connected to the output end of the exhaust pipe through the Y-shaped connector; the surface of the injection pipe has several inclined downward airflow grooves spaced axially, and the airflow direction of the airflow grooves corresponds to the concave and convex parts of the contour base.

[0012] Furthermore, the drive source of the cutting device is a hydraulic cylinder vertically mounted on the top crossbeam of the gantry frame, and the output end of the hydraulic cylinder is fixedly connected to the top of the upper blade holder.

[0013] Furthermore, the roll forming machine includes several pairs of frame plates, lower rolls and upper rolls arranged at intervals on the base platform; the frame plates are provided with adjustment grooves in the vertical direction; the two ends of the lower rolls are rotatably mounted on the frame plates on both sides through lower bearing seats; the two ends of the upper rolls are slidably engaged in the adjustment grooves through upper bearing seats, and the upper rolls are located directly above the lower rolls.

[0014] Furthermore, the roll forming machine also includes an adjusting bolt, which has a vertical thread passing through the top of the frame plate and its bottom end bearing connected to the top surface of the upper bearing seat. The upper bearing seat is moved by rotation to adjust the downward pressure of the upper roll.

[0015] Furthermore, the roll forming host also includes a drive motor fixed on the base platform and a reducer connected to its output end. The ends of each stage of the lower rolls are coaxially fixed with a linkage shaft. The output end of the reducer is connected to one of the linkage shafts through a main drive chain. Adjacent linkage shafts are sequentially connected through a split chain.

[0016] The above-described at least one technical solution adopted in the embodiments of the present invention can achieve the following beneficial effects: A corrugated sheet metal box roller pressing and unloading cutting device is disclosed. This invention features a linkage support assembly at the discharge port of the cutting device. The lifting motion of the upper blade holder mechanically drives the support unit inside the contour base to move synchronously. This achieves automatic switching between the support unit's lifting during feeding to replace sliding friction with rolling friction, and the support unit's retraction during cutting to provide rigid contour support. This effectively avoids surface scratches caused by sliding friction between the sheet metal and the base during transport. Simultaneously, this invention cleverly utilizes the mechanical movement of the upper blade holder during resetting after cutting to drive a blow-off device. Without requiring an external air source or electricity, high-pressure airflow is automatically generated during the cutting return stroke to precisely spray and clean the uneven surfaces of the contour base. This promptly removes iron filings and foreign objects generated during cutting, fundamentally preventing secondary damage or forming defects to the sheet metal caused by accumulated debris on the base. This improves the surface quality of the finished corrugated sheet metal box and the reliability of the automated operation of the equipment. Attached Figure Description

[0017] The accompanying drawings, which are provided to further illustrate the invention and constitute a part of this invention, are illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention.

[0018] In the attached diagram: Figure 1 This is an overall schematic diagram of a corrugated iron plate box roller pressing unloading and cutting device according to this application; Figure 2 for Figure 1 A schematic diagram of the rear structure; Figure 3 for Figure 2 A partial structural diagram; Figure 4 for Figure 3 Enlarged structural diagram at point A; Figure 5 for Figure 3 A partial structural diagram; Figure 6 for Figure 5 A magnified structural diagram at point B; Figure 7 for Figure 6 A partial structural diagram; Figure 8 for Figure 7 A magnified structural diagram at point C; Figure 9 A schematic diagram of the bottom structure of number 7; Figure 10 for Figure 9 Enlarged view of point D;

[0019] Figure label: 1. Base platform; 2. Roll forming main unit; 21. Frame upright plate; 22. Adjusting groove; 23. Lower roll; 231. Lower bearing seat; 24. Upper roll; 241. Upper bearing seat; 243. Adjusting bolt; 25. Drive motor; 26. Reducer; 27. Main drive chain; 28. Linkage shaft; 29. ​​Transfer chain; 3. Cutting device; 31. Gantry frame; 32. Hydraulic cylinder; 33. Upper knife holder; 34. Upper cutter; 35. Contouring base; 36. Guide side rod; 4. Linkage support assembly; 41. Guide seat; 42. Protective cover; 43. Active... 44. Rack; 45. Drive shaft; 46. Side bearing seat; 47. Drive gear; 48. Lifting guide plate; 49. Drive rack; 40. Lower support shaft; 41. Drive gear; 42. Cam; 43. Support block; 44. T-shaped push rod; 45. Support wheel; 46. Return spring; 57. Blow-off device; 58. Fixed pipe clamp; 59. Piston cylinder; 50. Piston rod; 510. Right angle bracket; 52. Air outlet pipe; 53. Air inlet port; 54. Clamp; 55. Y-shaped connector; 56. Support seat; 57. Injection pipe; 58. Airflow groove. Detailed Implementation

[0020] To further illustrate the technical means and effects adopted by the present invention in order to achieve the intended purpose, the following detailed description is provided in conjunction with the accompanying drawings and preferred embodiments, based on the specific implementation methods, structures, features and effects of the present invention.

[0021] The technical solutions provided by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] Reference Figures 1-10 As shown, this embodiment of the invention provides a corrugated sheet iron box roll forming unloading and cutting device. The main structure of the device includes a base platform 1, on which a roll forming host 2 and a cutting device 3 are arranged in sequence.

[0023] like Figures 2-4 As shown, the roll forming host 2 serves as the execution mechanism for cold bending of sheet metal. It includes several pairs of frame plates 21 that are spaced apart along the conveying direction on the base platform 1. Between each pair of frame plates 21, a lower roller 23 and an upper roller 24 are arranged vertically and vertically, and the two cooperate to form a roll forming die.

[0024] In terms of specific structure, the frame upright plate 21 is provided with an adjustment groove 22 extending in the vertical direction. The two ends of the lower roller 23 are rotatably supported on the frame upright plate 21 on both sides through the lower bearing seat 231, and its axis height is fixed, thereby forming a stable plate conveying reference surface. The upper roller 24 is set directly above the lower roller 23, and its two ends are slidably limited in the adjustment groove 22 through the upper bearing seat 241. By sliding the upper bearing seat 241 up and down in the adjustment groove 22, the upper roller 24 has the ability to adjust vertically to adapt to different plate thicknesses or adjust the roller pressure.

[0025] To accommodate iron plate boxes of different thicknesses, an adjusting bolt 243 is vertically threaded through the top of the frame upright plate 21. The bottom end of the adjusting bolt 243 is connected to the top surface of the upper bearing seat 241. By rotating the adjusting bolt 243, the operator drives the upper bearing seat 241 to move within the adjusting groove 22, thereby adjusting the downward pressure of the upper roller 24 (i.e., the roller gap) to ensure the quality of the roller pressing.

[0026] A drive motor 25 and a reducer 26 are fixed on the base platform 1. The ends of each stage of the lower rollers 23 are all coaxially fixed with linkage shafts 28. The output end of the reducer 26 is connected to one of the linkage shafts 28 through the main transmission chain 27 as the power input point. Adjacent linkage shafts 28 are connected in sequence through the distribution chain 29, thereby realizing the synchronous rotation of all rollers driven by a single motor, ensuring the continuity and stability of the sheet forming.

[0027] like Figures 2 to 5 As shown, the cutting device 3 is arranged on the discharge side of the roll forming host 2, and it mainly consists of a gantry frame 31, a hydraulic cylinder 32, an upper knife holder 33, an upper cutting knife 34, a contour base 35, and a guide rod 36.

[0028] Specifically, the gantry 31 is fixedly mounted on the base platform 1, and the hydraulic cylinder 32 is vertically mounted on the top beam of the gantry 31 as the drive source. The upper cutter holder 33 is movably disposed in the inner space of the gantry 31, and its top is fixedly connected to the output end of the hydraulic cylinder 32, so that it performs a vertical reciprocating cutting motion under the drive of the hydraulic cylinder 32. A contoured upper cutter 34 matching the cross section of the plate is installed at the bottom of the upper cutter holder 33, and a contoured base 35 is fixedly fixed on the base platform 1 directly below the upper cutter 34. The two achieve deformation-free shearing of the corrugated plate through the cooperation of concave and convex curved surfaces.

[0029] In addition, the guide rods 36 are symmetrically fixed on both sides of the upper tool holder 33 and extend into the columns on both sides of the gantry frame 31. Correspondingly, the two columns of the gantry frame 31 are provided with relief grooves (not shown in the figure) for the vertical displacement of the guide rods 36. The guide rods 36 and the groove wall of the relief groove form a sliding guide engagement, providing a stable lateral guide constraint for the impact lifting of the upper tool holder 33.

[0030] like Figures 4-9 As shown, in order to solve the problem of scratches caused by sliding friction between the sheet material and the contour base 35 during the conveying process, this embodiment provides a linkage support component 4 at the discharge port of the cutting device 3. The linkage support component 4 is mainly composed of a drive unit and a support unit. The drive unit is connected to the side of the upper cutter holder 33 to capture the lifting signal, while the support unit is built into the interior of the contour base 35 to perform the support action.

[0031] Specifically, the drive unit includes two guide seats 41 symmetrically fixed to one side of the upper tool holder 33. A protective cover 42 is fixed to the surface of each guide seat 41. An active rack 43 is located inside each guide seat 41. A drive shaft 44 is transversely inserted between the two protective covers 42. A long groove (not shown in the figure) is provided on the protective cover 42 for vertical displacement of the drive shaft 44. Both ends of the drive shaft 44 extend into the two columns of the gantry frame 31 and are supported by side bearing seats 441 fixed to the inner walls of the two columns. A transmission gear 45 meshes with the active rack 43 on the drive shaft 44, thus forming the basic transmission structure. More importantly, a lifting guide plate 46 is fixed to the bottom surface of the guide rod 36 extending into the columns of the gantry frame 31. A drive rack 461 is embedded on the side of the lifting guide plate 46. This drive rack 461 rises and falls synchronously with the upper tool holder 33, serving as the power output source for the entire assembly.

[0032] Correspondingly, the interior of the contour base 35 is not a solid structure, but rather has a specially designed mounting cavity. The core of the support unit is a lower support shaft 47 that rotates laterally through this mounting cavity. Both ends of the lower support shaft 47 extend into the interior of the two columns of the gantry frame 31, and a drive gear 471 is fixed to the end of the lower support shaft 47. This drive gear 471 is in a meshing transmission state with the drive rack 461 on the lifting guide plate 46. Several cams 48 are arranged along a straight line on the lower support shaft 47, and these cams 48 are hidden inside each "protrusion" crest of the contour base 35. Inside the crest, a support block 49 is fixed, and a T-shaped push rod 410 is vertically inserted through the support block 49. The bottom end of the T-shaped push rod 410 abuts against the contour surface of the cam 48, and a support wheel 411 is fixed at the top end. A return spring 412 is sleeved on the T-shaped push rod 410. One end of the return spring 412 is connected to the bottom surface of the support block 49, and the other end is connected to the protruding edge at the bottom end of the T-shaped push rod 410. It always applies downward force to keep the T-shaped push rod 410 in close contact with the cam 48.

[0033] In actual operation, the linkage support assembly 4 realizes the automatic linkage logic of "feeding lifting and cutting avoidance". When the upper cutter holder 33 is in the high-position feeding state, the drive rack 461 is in the high position, and the lower support shaft 47 and cam 48 are rotated to the "high point" phase through gear transmission. At this time, the cam 48 lifts the T-shaped top rod 410, so that the support wheel 411 protrudes partially from the surface of the contour base 35. The corrugated plate is supported by the support wheel 411 and is conveyed by rolling friction. The bottom surface of the plate does not contact the base, thus avoiding coating scratches. When the hydraulic cylinder 32 drives the upper cutter holder 33 to move downward to cut, the drive rack 461 moves downward synchronously, the drive gear 471 rotates, and drives the lower support shaft 47 and cam 48 to rotate. When the cam 48 rotates to the "low point" phase (i.e., the avoidance position), under the action of the return spring 412, the T-shaped top rod 410 quickly falls back, retracting the support wheel 411 below the surface of the contour base 35. At this time, the bottom surface of the corrugated plate is completely attached to the contour base 35, obtaining rigid support, ensuring that the cut is flat and preventing deformation.

[0034] like Figures 5-10 As shown, in order to address the problem of easy debris accumulation in the groove of the contour base, this embodiment also designs a blow-off device 5 that does not require an external air source. It mainly consists of an air supply unit and an injection unit, and is installed on the gantry 31 as a whole. It is suitable for generating a clean airflow with the return stroke of the upper cutter holder 33.

[0035] Specifically, the air supply unit includes a number of fixed pipe clamps 51 that are fixed at intervals along the vertical direction to the inner wall of the gantry 31, and a vertical piston cylinder 52 that is clamped and fixed by the number of fixed pipe clamps 51. A right-angle bracket 54 is fixed at the bottom end of the guide side rod 36, and a piston rod 53 is vertically connected to the horizontal part of the right-angle bracket 54. The top end of the piston rod 53 is sealed and slides into the interior of the piston cylinder 52. This structure utilizes the characteristic that the guide side rod 36 moves synchronously with the upper knife holder 33 to convert mechanical displacement into pneumatic power.

[0036] The injection unit is responsible for guiding and executing the airflow. The top of the piston cylinder 52 is equipped with a one-way air intake port 56 (to ensure air is drawn in when the piston moves downward) and an exhaust pipe 55 for outputting compressed gas. One end of the exhaust pipe 55 extends to the outside of the gantry 31 and is constrained to the outside of the gantry 31 by several vertically spaced clamps 57. The end of the exhaust pipe 55 is connected to a Y-shaped connector 58, realizing dual-path airflow. Support seats 59 are symmetrically fixed on both sides of the contour base 35. Two injection pipes 510 are horizontally mounted horizontally between the two support seats 59 to span the entire cutting area and are respectively connected to the branches of the Y-shaped connector 58. The key feature is that several long, downward-sloping airflow grooves 511 are spaced axially on the surface of the injection pipes 510. The injection direction of the airflow grooves 511 on the upper and lower rows of injection pipes 510 is arranged to correspond to the concave and convex parts of the surface of the contour base 35, thereby achieving full-coverage cleaning of the cutting area.

[0037] When the cutting process is completed, as the upper tool holder 33 and guide rod 36 enter the upward reset stroke, the right-angle bracket 54 moves upward synchronously with the guide rod 36, forcibly pushing the piston rod 53 to perform high-speed compression motion within the piston cylinder 52, thereby instantly forming a high-pressure air source within the cylinder. This high-pressure airflow is then guided through the exhaust pipe 55 to the lower injection pipe 510, and finally ejected as a high-velocity air curtain from the narrow airflow groove 511. Due to the directional design of the injection angle of the airflow groove 511, the high-speed airflow can cover the concave and convex surfaces of the contour base 35, powerfully blowing away the iron filings generated during the cutting process, thereby ensuring the cleanliness of the processing interface and eliminating the potential for scratches or deformation of the sheet metal caused by accumulated chips.

[0038] Working principle: At the start of operation, the drive motor 25 starts, and the power is transmitted to the linkage shaft 28 of the roll forming host 2 via the reducer 26 and the main drive chain 27. The drive chain 29 drives all stages of the lower rollers 23 to rotate synchronously. The sheet material to be processed enters between the frame uprights 21. Under the combined extrusion of the upper and lower rollers 23, it undergoes multiple continuous cold bending deformations to gradually form the required corrugated shape. During this process, if it is necessary to process sheets of different thicknesses or fine-tune the forming effect, the operator rotates the adjusting bolt 243, which drives the upper bearing seat 241 to slide vertically in the adjusting groove 22, thereby precisely adjusting the roller gap between the upper roller 24 and the lower roller 23. This ensures that the sheet material completes high-precision forming and conveying on a stable conveying reference surface, and the formed sheet material is then sent to the end cutting device 3.

[0039] The second stage involves the linkage between the cutting operation and the anti-scratch support. During the feeding of the sheet metal, the hydraulic cylinder 32 is in a high position, and the upper blade holder 33 of the cutting device 3 is in a standby state. At this time, the linkage support assembly 4 pulls the drive gear 471 through the drive rack 461 on the lifting guide plate 46, keeping the lower support shaft 47 and cam 48 in the "high point" phase, lifting the T-shaped top rod 410 and the support wheel 411. The support wheel 411 protrudes from the surface of the contour base 35, lifting the moving corrugated sheet metal, and using rolling friction instead of sliding friction to effectively prevent the coating from being scratched by the base. When cutting is required, the hydraulic cylinder 32 drives the upper cutter holder 33 to move downward, and drives the rack 461 to move downward in sync and drives the cam 48 to rotate to the "low point" avoidance position. The support wheel 411 quickly retracts into the base under the action of the return spring 412. Then, the bottom surface of the corrugated plate is smoothly attached to the surface of the contour base 35 to obtain rigid support. The upper cutter 34 continues to move downward and cooperates with the contour base 35 to complete the deformation-free shearing of the corrugated plate.

[0040] Finally, there is the tool holder reset and automatic cleaning stage. After the cutting action is completed, the hydraulic cylinder 32 drives the upper tool holder 33 and the guide rod 36 to perform an upward reset action. During this return stroke, the right-angle bracket 54 moves upward synchronously with the guide rod 36, forcibly pushing the piston rod 53 to perform high-speed compression motion in the piston cylinder 52, converting the kinetic energy of mechanical reset into air pressure energy. The instantaneously generated high-pressure airflow is diverted through the air outlet pipe 55 to the spray pipe 510, and is ejected from the directional airflow groove 511 to form a high-velocity air curtain. This airflow precisely covers the concave and convex surfaces of the contour base 35, powerfully blowing away the iron filings and oil stains generated during the cutting, ensuring that the base surface remains clean and free of foreign objects when the support wheel 411 rises and the plate enters next time, avoiding secondary scratches or forming defects in the plate caused by accumulated chips and pads, and realizing passive automatic maintenance.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A corrugated sheet metal box roll forming and unloading cutting device, comprising a base platform (1), wherein a roll forming host (2) is fixedly mounted on the base platform (1), characterized in that, It also includes: a cutting device (3), which is set on the base platform (1) and located at the discharge end of the roll forming host (2). The cutting device (3) includes a gantry frame (31), a drive source and an upper knife holder (33) movably set on the gantry frame (31). An upper cutter (34) is fixed at the bottom end of the upper knife holder (33), and a contour base (35) is fixed on the base platform (1). Linkage support assembly (4) is set at the discharge port of the cutting device (3), including a drive unit and a support unit. The drive unit is connected to the side of the upper knife holder (33), and the support unit is set inside the contour base (35). The drive unit drives the support unit to move in accordance with the lifting and lowering action of the upper knife holder (33) so as to avoid the plate during cutting. The blow-off device (5) is installed on the gantry frame (31) and includes an air supply unit with a telescopic structure and an injection unit. The air supply unit is connected to the guide component of the upper cutter holder (33). The reset stroke of the upper cutter holder (33) drives the air supply unit to compress air to generate airflow. The air outlet of the injection unit faces the concave and convex surfaces of the contour base (35).

2. The corrugated sheet iron box roller pressing and unloading cutting device according to claim 1, characterized in that, The cutting device (3) further includes guide side rods (36) fixed on both sides of the upper knife holder (33) and movably extended into the two columns of the gantry frame (31). The two columns of the gantry frame (31) are provided with clearance grooves for vertical displacement of the guide side rods (36). The drive unit includes two guide seats (41) symmetrically fixed on the side of the upper knife holder (33). A protective cover (42) is fixed on the surface of the guide seat (41). An active rack (43) is fixed on the side of the guide seat (41) and located inside the protective cover (42). A transmission shaft (44) is transversely inserted between the two protective covers (42). The two ends of the transmission shaft (44) extend into the two columns of the gantry frame (31) and are supported by side bearing seats (441) fixed inside the two columns of the gantry frame (31). A transmission gear (45) is fixedly sleeved on the transmission shaft (44). The transmission gear (45) meshes with the active rack (43).

3. The corrugated sheet iron box roller pressing, unloading, and cutting equipment according to claim 2, characterized in that, The drive unit also includes a lifting guide plate (46) fixed to the bottom surface of the guide side rod (36) and a drive rack (461) embedded in the side of the lifting guide plate (46). The contour base (35) has an installation cavity inside. The support unit includes a lower support shaft (47) that rotates through the installation cavity and a drive gear (471) fixed to the end of the lower support shaft (47). The two ends of the lower support shaft (47) extend into the two columns of the gantry frame (31). The drive gear (471) is located inside the gantry frame (31) and meshes with the drive rack (461) for transmission.

4. The corrugated sheet iron box roller pressing, unloading, and cutting equipment according to claim 3, characterized in that, The support unit also includes a cam (48), a support block (49), a T-shaped top rod (410), a support wheel (411), and a return spring (412). The cam (48) is provided with several protrusions along the straight direction of the lower support shaft (47) and correspondingly located inside the protrusions of the contour base (35). The support block (49) is fixed inside the protrusions of the contour base (35). The T-shaped top rod (410) vertically penetrates the support block (49) and abuts against the cam (48). The support wheel (411) is fixed to the top of the T-shaped top rod (410) and partially protrudes from the surface of the contour base (35). The return spring (412) is sleeved on the T-shaped top rod (410) and its two ends abut against the bottom surface of the support block (49) and the bottom protrusion of the T-shaped top rod (410), respectively.

5. The corrugated sheet iron box roller pressing and cutting equipment according to claim 2, characterized in that, The air supply unit includes several fixed pipe clamps (51), piston cylinder (52), piston rod (53) and right angle bracket (54). Several fixed pipe clamps (51) are fixed at intervals along the vertical direction on the inner wall of the gantry (31). The piston cylinder (52) is clamped and fixed in the fixed pipe clamps (51). The right angle bracket (54) is fixed to the bottom end of the guide side rod (36). The bottom end of the piston rod (53) is vertically connected to the horizontal part of the right angle bracket (54). The top end is sealed and slides into the piston cylinder (52). When the piston rod (53) moves upward and resets with the upper knife seat (33) and the guide side rod (36), it performs piston movement in the piston cylinder (52) to compress air.

6. The corrugated sheet iron box roller pressing and unloading cutting device according to claim 5, characterized in that, The injection unit includes an exhaust pipe (55), an intake port (56), a Y-shaped connector (58), a support base (59), and an injection pipe (510). The input end of the exhaust pipe (55) is connected to the top of the piston cylinder (52), and the output end extends to the outside of the gantry (31). The intake port (56) is located on the top of the piston cylinder (52) and allows unidirectional air intake. The pipe body of the exhaust pipe (55) is fixed to the outer surface of the gantry (31) by a clamp (57). The support base (59) is symmetrically fixed on both sides of the contour base (35). The two jet pipes (510) are horizontally mounted between the two support bases (59) in parallel arrangement and are connected to the output end of the air outlet pipe (55) through the Y-shaped connector (58). The surface of the jet pipe (510) is provided with a number of inclined downward airflow grooves (511) spaced apart along the axial direction. The air outlet direction of the airflow grooves (511) is directed toward the concave and convex parts of the contour base (35).

7. The corrugated sheet iron box roller pressing and unloading cutting device according to claim 1, characterized in that, The cutting device (3) is driven by a hydraulic cylinder (32) that is vertically installed on the top beam of the gantry frame (31). The output end of the hydraulic cylinder (32) is fixedly connected to the top of the upper knife holder (33).

8. The corrugated sheet iron box roller pressing and unloading cutting device according to claim 1, characterized in that, The roll forming host (2) includes several pairs of frame plates (21), lower rolls (23) and upper rolls (24) arranged at intervals on the base platform (1); the frame plates (21) are provided with adjustment grooves (22) in the vertical direction; the two ends of the lower rolls (23) are rotatably mounted on the frame plates (21) on both sides through lower bearing seats (231); the two ends of the upper rolls (24) are slidably fitted in the adjustment grooves (22) through upper bearing seats (241), and the upper rolls (24) are located directly above the lower rolls (23).

9. A corrugated sheet iron box roller pressing, unloading, and cutting device according to claim 8, characterized in that, The roll forming host (2) also includes an adjusting bolt (243), which has a vertical thread passing through the top of the frame plate (21) and its bottom end bearing connected to the top surface of the upper bearing seat (241). The upper bearing seat (241) is displaced by rotation to adjust the downward pressure of the upper roll (24).

10. A corrugated sheet iron box roller pressing, unloading, and cutting device according to claim 8, characterized in that, The roll forming host (2) also includes a drive motor (25) fixed on the base platform (1) and a reducer (26) connected to its output end. The ends of each of the lower rolls (23) are coaxially fixed with a linkage shaft (28). The output end of the reducer (26) is connected to one of the linkage shafts (28) through the main drive chain (27). The adjacent linkage shafts (28) are sequentially connected through the split chain (29).

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