Rectangular air duct sheet metal flanging machine

Abstract

The utility model relates to the technical field of metal plate edge folding, in particular to a rectangular air pipe metal plate edge folding machine which can reduce manual intervention through automatic adjustment and ensure accurate edge folding positioning and simple operation through precise adjustment. Comprising a base, baffles and an edge folding platform are arranged on the base, the two baffles are oppositely arranged, a conveying belt and an adjusting mechanism are arranged between the baffles, fixing mechanisms are symmetrically arranged on the adjusting mechanism, and guide plates are arranged between the fixing mechanisms and the inner walls of the baffles; the adjusting mechanism comprises a first driving motor arranged on the side wall of the baffle and a first driving screw rod connected with the output end of the first driving motor, the first driving screw rod is arranged between the baffles, two sections of threads in opposite directions are arranged on the first driving screw rod, and the two sections of threads are symmetrically arranged relative to the center line position of the first driving screw rod; a connecting rod is arranged on the side wall of the fixing mechanism, driving blocks are arranged at the bottom of the connecting rod, the first driving screw penetrates through the driving blocks and is in sliding connection with the driving blocks, and the two driving blocks are located on the two sections of threads correspondingly.

Description

Technical Field

[0001] The utility model relates to the technical field of sheet metal hemming, in particular to a rectangular air duct sheet metal hemming machine. Background Technique

[0002] In recent years, with the continuous progress of industry, VOCs from industries such as building decoration, organic chemical industry, petroleum and petrochemical industry, packaging and printing, and surface coating have caused great pollution to the air. The country has paid more and more attention to the treatment of VOCs waste gas, and currently has a relatively complete treatment process, which can generally be divided into: combustion method, condensation recovery method, adsorption regeneration method, etc. To ensure the good operation of the main process, it is necessary to collect the waste gas at each waste gas generation point to form a ventilation system, and after completing the organized waste gas pipeline, it enters the main process equipment for treatment. Among them, the air duct is an indispensable monomer in the ventilation pipeline. According to the cross-sectional shape, the air duct can be divided into various types such as circular air duct, rectangular air duct, and oval air duct. Among them, the circular air duct has the smallest resistance, but due to the largest height dimension of the circular air duct and the relatively complex production, the most commonly used air duct is still the rectangular air duct.

[0003] During the production process of rectangular air ducts, it is necessary to first cut the size of the air duct plates to be produced on a laser cutting machine, and then fold the edges on a hemming machine. Hemming is an irreversible one-time operation. When hemming, once the fixed orientation of the plate deviates, the folded plate will be discarded because it does not meet the requirements of the subsequent process. This requires manual confirmation and adjustment before folding the plate. Although the hemming accuracy is improved, the production efficiency is slowed down. Content of the Utility Model

[0004] To solve the above technical problems, the utility model provides a rectangular air duct sheet metal hemming machine with automatic adjustment to reduce manual intervention, accurate hemming positioning with a precise adjustment mechanism, and simple operation.

[0005] A rectangular air duct sheet metal hemming machine of the utility model includes a base, a baffle and a hemming platform are arranged on the base, the two baffles are arranged oppositely, a conveyor belt and an adjustment mechanism are arranged between the baffles, fixing mechanisms are symmetrically arranged on the adjustment mechanism, and a guiding plate is arranged between the fixing mechanism and the inner wall of the baffle; the adjustment mechanism includes a first driving motor arranged on the side wall of the baffle and a first driving screw connected to the output end of the first driving motor, the first driving screw is arranged between the baffles, two sections of threads with opposite directions are arranged on the first driving screw, and the two sections of threads are symmetrically arranged with respect to the midline position of the first driving screw. A connecting rod is arranged on the side wall of the fixing mechanism, a driving block is arranged at the bottom of the connecting rod, the first driving screw penetrates through the driving block and is slidably connected with the driving block, and the two driving blocks are respectively located on the two sections of threads.

[0006] Further, the fixing mechanism includes a fixing plate, with a mounting plate and a pressing plate respectively arranged at the upper and lower ends of the fixing plate. A plurality of second driving motors are arranged at the bottom of the mounting plate, and a lifting plate parallel to the pressing plate is arranged at the output end of the second driving motor.

[0007] Further, mounting grooves are arranged on both the pressing plate and the lifting plate, and a plurality of rollers are arranged in the mounting grooves.

[0008] Further, a first groove is arranged at the bottom of the fixing plate, with a driving gear and a plurality of driven gears arranged in the first groove. The driving gear and the plurality of driven gears are respectively connected to the rollers arranged in the pressing plate. A third driving motor is also arranged in the first groove, and the output end of the third driving motor is connected to the driving gear. The driving gear and the driven gears are meshed in sequence.

[0009] Further, a guide rail is arranged on the base, and a cavity corresponding to the guide rail is arranged at the bottom of the driving block.

[0010] Further, a bracket is arranged on the guide rail, with a plurality of conveying wheels arranged at the top end of the bracket, and a rotating channel corresponding to the first driving screw is arranged at the bottom of the bracket.

[0011] Further, the conveying wheels, the conveyor belt, the fixing mechanism, and the conveying surface of the hemming platform are at the same horizontal height.

[0012] Further, a connecting piece is arranged on the side wall of the fixing mechanism, and one end of the connecting piece is rotatably connected to one end of the guiding plate. A second groove is arranged on the side wall of the baffle, with chutes arranged at the upper and lower ends of the second groove. A sliding rod is arranged at the end of the guiding plate not connected to the connecting piece, and the sliding rod is slidably connected to the chute.

[0013] Further, the hemming platform includes columns, a movable pressing plate, a second driving screw, and a fixed pressing plate. The columns are symmetrically arranged on the base, the movable pressing plate is arranged between the columns, a second driving screw is arranged in the columns, a fourth driving motor is arranged on the columns, and the output end of the fourth driving motor is connected to the second driving screw. A slider is sleeved outside the second driving screw, a groove corresponding to the slider is arranged on the columns, and the slider is fixedly connected to the movable pressing plate through the groove. The fixed pressing plate is located below the movable pressing plate.

[0014] Further, the hemming platform further includes a bending plate, the bending plate is arranged between the columns, rotating shafts are arranged at both ends of the bending plate close to the fixed pressing plate, a fifth driving motor is arranged in the columns, and the output end of the fifth driving motor is connected to the rotating shafts. Limit blocks are arranged at both ends of the bending plate far from the rotating shafts, and arc-shaped grooves corresponding to the limit blocks are arranged on the movable pressing plate.

[0015] The beneficial effects of the present utility model compared with the prior art are as follows:

[0016] The first driving motor drives the first driving screw to rotate. Through the design of two sections of threads with opposite directions on the first driving screw, the fixing mechanism moves to both sides, enabling the distance between the fixing mechanisms to be adjusted quickly and accurately to adapt to duct plates of different specifications, increasing the applicable range and flexibility of the equipment, reducing the time for manual confirmation and adjustment, significantly improving the production speed; ensuring that the plate is accurately fixed before flanging through the fixing mechanism, maintaining a high positioning accuracy even during continuous production, reducing the rejection rate caused by positioning deviation, improving the finished product quality, and reducing costs; replacing traditional manual adjustment with electric adjustment, reducing the operation difficulty, reducing the dependence on skilled workers, and making the operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present utility model will be further described below with reference to the accompanying drawings.

[0018] Figure 1 is a schematic structural diagram of the present utility model;

[0019] Figure 2 is a schematic partial structural diagram of the present utility model;

[0020] Figure 3 is a schematic structural diagram of the fixing mechanism of the present utility model Figure 1 ;

[0021] Figure 4 is a schematic structural diagram of the fixing mechanism of the present utility model Figure 2 ;

[0022] Figure 5 is Figure 4 a schematic enlarged partial structural diagram of the fixing mechanism in

[0023] Figure 6 is a schematic structural diagram of the flanging platform of the present utility model Figure 1 ;

[0024] Figure 7 is a schematic structural diagram of the flanging platform of the present utility model Figure 2 ;

[0025] Labels in the attached drawings: 1, base; 2, baffle; 3, conveyor belt; 4, adjustment mechanism; 5, fixing mechanism; 6, guiding plate; 7, hemming platform; 8, first driving motor; 9, first driving screw; 10, connecting rod; 11, driving block; 12, fixing plate; 13, mounting plate; 14, pressing plate; 15, second driving motor; 16, lifting plate; 17, mounting groove; 18, roller; 19, first groove; 20, driving gear; 21, driven gear; 22, third driving motor; 23, guide rail; 24, cavity; 25, support; 26, rotating channel; 27, conveyor wheel; 28, connecting member; 29, second groove; 30, sliding groove; 31, sliding rod; 32, column; 33, moving pressing plate; 34, second driving screw; 35, fourth driving motor; 36, slider; 37, fixing pressing plate; 38, bending plate; 39, fifth driving motor; 40, limiting block. Detailed implementation manners

[0026] The following combines the attached drawings and embodiments to further describe in detail the specific implementation manners of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0027] As Figures 1 to 7 shown, a rectangular air duct sheet metal hemming machine of the present utility model includes a base 1. A baffle 2 and a hemming platform 7 are arranged on the base 1. The two baffles 2 are arranged oppositely. A conveyor belt 3 and an adjustment mechanism 4 are arranged between the baffles 2. Fixing mechanisms 5 are symmetrically arranged on the adjustment mechanism 4. A guiding plate 6 is arranged between the fixing mechanism 5 and the inner wall of the baffle 2; The adjustment mechanism 4 includes a first driving motor 8 arranged on the side wall of the baffle 2 and a first driving screw 9 connected to the output end of the first driving motor 8. The first driving screw 9 is arranged between the baffles 2. Two sections of threads with opposite directions are arranged on the first driving screw 9. The two sections of threads are symmetrically arranged with respect to the midline position of the first driving screw 9. A connecting rod 10 is arranged on the side wall of the fixing mechanism 5. A driving block 11 is arranged at the bottom of the connecting rod 10. The first driving screw 9 penetrates through the driving block 11 and is slidably connected to the driving block 11, and the two driving blocks 11 are respectively located on the two sections of threads;

[0028] The first driving motor 8 drives the first driving screw 9 to rotate. Through the design of the two sections of threads with opposite directions on the first driving screw 9, the fixing mechanism 5 moves to both sides, which can quickly and accurately adjust the distance between the fixing mechanisms 5 to adapt to air duct plates of different specifications, increase the applicable range and flexibility of the equipment, and reduce the time for manual confirmation and adjustment, significantly improving the production speed; The fixing mechanism 5 ensures that the plate is accurately fixed before hemming, and even in the continuous production process, it can maintain a high positioning accuracy, reduce the rejection rate caused by positioning deviation, improve the finished product quality, and reduce costs; The electric adjustment replaces the traditional manual adjustment, reduces the operation difficulty, reduces the dependence on skilled workers, and makes the operation more convenient.

[0029] The fixing mechanism 5 includes a fixing plate 12. Installation plates 13 and pressing plates 14 are respectively arranged at the upper and lower ends of the fixing plate 12. A plurality of second driving motors 15 are arranged at the bottom of the installation plate 13, and a lifting plate 16 parallel to the pressing plate 14 is arranged at the output end of the second driving motor 15; Through the combined design of the fixing plate 12, the installation plate 13 and the pressing plate 14, stable support and clamping effects are provided for the plate. Even under high-speed or high-load production conditions, the stability of the plate can be ensured without displacement, avoiding processing errors; Through the second driving motor 15 and the lifting plate 16, the requirements of plates with different materials or thicknesses can be adapted, ensuring that the hemming effect is uniform.

[0030] As a preference of the above embodiment, installation grooves 17 are arranged on both the pressing plate 14 and the lifting plate 16, and a plurality of rollers 18 are arranged in the installation grooves 17; The plate clamped between the lifting plate 16 and the pressing plate 14 is conveyed to the hemming platform 7 through the rollers 18, improving production efficiency and automation level.

[0031] As a preference of the above embodiment, a first groove 19 is arranged at the bottom of the fixing plate 12. A driving gear 20 and a plurality of driven gears 21 are arranged in the first groove 19. The driving gear 20 and the plurality of driven gears 21 are respectively connected to the rollers 18 arranged in the pressing plate 14. A third driving motor 22 is also arranged in the first groove 19, and the output end of the third driving motor 22 is connected to the driving gear 20, and the driving gear 20 and the driven gears 21 are meshed in sequence; By driving the driving gear 20 with the third driving motor 22, and then driving the plurality of driven gears 21 by the driving gear 20, synchronous rotation of all the rollers 18 on the pressing plate 14 and the lifting plate 16 is realized, ensuring the smoothness and consistency of the plate during the conveying process, and improving the operation stability; The multiple driven gears 21 make the driving force distribution more uniform. Even if the plate is large in size or heavy in weight, all the rollers can be evenly loaded, avoiding local overload or slipping, and improving the reliability of the conveying.

[0032] As a preference of the above embodiment, a guide rail 23 is arranged on the base 1, and a cavity 24 corresponding to the guide rail 23 is arranged at the bottom of the driving block 11; Through the combination of the guide rail 23 and the cavity 24 at the bottom of the driving block 11, an accurate guiding system is formed, ensuring that the fixing mechanism 5 moves smoothly and accurately along a predetermined path, improving the operation accuracy of the entire equipment, making the clamping position of the plate more accurate, and improving the processing quality of the air duct.

[0033] As a preference of the above embodiment, a bracket 25 is arranged on the guide rail 23. A plurality of conveying wheels 27 are arranged at the top end of the bracket 25, and a rotating channel 26 corresponding to the first driving screw 9 is arranged at the bottom of the bracket 25; The bracket 25 provides a firm support frame for the conveying wheels 27, and the conveying wheels 27 further provide support for the plate clamped between the fixing mechanisms 5, reducing vibration during the conveying process and improving the smoothness of the plate conveying.

[0034] Preferably, as in the above embodiment, the conveying wheel 27, the conveyor belt 3, the fixing mechanism 5 and the conveying surface of the hemming platform 7 are at the same horizontal height. The design of the same horizontal height ensures that the sheet can be smoothly transferred when transferring from the conveyor belt 3, the fixing mechanism 5 and the hemming platform 7, avoiding the falling, collision or damage of the sheet caused by the height difference, reducing the interruption during the conveying process, and improving the production efficiency and automation level.

[0035] Preferably, as in the above embodiment, a connecting member 28 is provided on the side wall of the fixing mechanism 5. The connecting member 28 is rotatably connected to one end of the guiding plate 6. A second groove 29 is formed on the side wall of the baffle 2. Chute 30 is provided at the upper and lower ends of the second groove 29. A slide bar 31 is provided at one end of the guiding plate 6 that is not connected to the connecting member 28. The slide bar 31 is slidably connected to the chute 30. Through the rotational connection between the connecting member 28 and the guiding plate 6, and the sliding connection between the slide bar 31 and the chute 30, it is ensured that the sheet can be accurately guided before entering the area of the fixing mechanism 5, avoiding the deviation or falling of the sheet during the conveying process on the conveyor belt 3.

[0036] Preferably, as in the above embodiment, the hemming platform 7 includes columns 32, a moving pressing plate 33, a second driving screw 34 and a fixed pressing plate 37. The columns 32 are symmetrically arranged on the base 1. The moving pressing plate 33 is arranged between the columns 32. A second driving screw 34 is arranged inside the columns 32. A fourth driving motor 35 is arranged on the columns 32. The output end of the fourth driving motor 35 is connected to the second driving screw 34. A slider 36 is sleeved outside the second driving screw 34. A groove corresponding to the slider 36 is arranged on the columns 32. The slider 36 is fixedly connected to the moving pressing plate 33 through the groove. The fixed pressing plate 37 is located below the moving pressing plate 33. Through the cooperation of the second driving screw 34 and the fourth driving motor 35, the up and down movement of the moving pressing plate 33 is accurately controlled. The moving pressing plate 33 and the fixed pressing plate 37 cooperate to fix the sheet during hemming, reducing the risk of dislocation, and ensuring that the hemming effect is consistent and meets the high-quality requirements.

[0037] Preferably, as in the above embodiment, the hemming platform 7 further includes a bending plate 38. The bending plate 38 is arranged between the columns 32. Rotating shafts are arranged at both ends of the bending plate 38 close to the fixed pressing plate 37. A fifth driving motor 39 is arranged inside the columns 32. The output end of the fifth driving motor 39 is connected to the rotating shaft. Limit blocks 40 are arranged at both ends of the bending plate 38 far from the rotating shaft. Arc-shaped grooves corresponding to the limit blocks 40 are arranged on the moving pressing plate 33. By driving the bending plate 38 to rotate through the fifth driving motor 39, the dynamic bending control of the sheet during the hemming process is realized. The limit blocks 40 and the corresponding arc-shaped grooves ensure the accurate positioning of the bending angle, preventing over-bending or inconsistent angles, and improving the consistency and quality of the finished product.

[0038] A rectangular air duct sheet metal flanging machine of the present utility model, when working, first places the cut rectangular air duct sheet on the conveyor belt 3, starts the conveyor belt 3 to convey the sheet to the conveyor wheel 27, and the guiding plate 6 helps the sheet to align and reduces deviation; the fixing mechanism 5, through the pressing plate 14 and the lifting plate 16, with the assistance of the rollers 18, makes fine adjustments and fixes the sheet in the vertical direction to ensure that the sheet is stable and does not shift; the first driving motor 8 drives the first driving screw 9 to rotate, and through the two sections of threads with opposite directions on the first driving screw 9, the fixing mechanism 5 moves towards the center side, and the second driving motor 15 controls the lifting plate 16 to move downward, and the pressing plate 14 and the lifting plate 16 fix the sheet in the vertical direction to ensure that the sheet is stable and does not shift; the third driving motor 22 drives the driving gear 20 to rotate, and then the driving gear 20 drives a plurality of driven gears 21 to achieve the synchronous rotation of all the rollers 18 on the pressing plate 14 and the lifting plate 16 to convey the sheet to the flanging platform 7; the fourth driving motor 35 drives the second driving screw 34 to rotate, controls the moving pressing plate 33 to move downward, and cooperates with the fixed pressing plate 37 to fix the sheet during flanging; the fifth driving motor 39 drives the bending plate 38 to rotate, and through the cooperation of the rotating shaft and the limiting block 40, accurately controls the bending angle. At the same time, the arc-shaped groove on the column 32 cooperates with the limiting block 40 to guide the sheet to form a predetermined bending shape.

[0039] An installation method, connection method or setting method of a rectangular air duct sheet metal flanging machine of the present utility model is a common mechanical method, and any implementation that can achieve its beneficial effects can be carried out.

[0040] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A rectangular air duct sheet metal hemming machine, characterized in that, It includes a base (1), on which a baffle (2) and a flanging platform (7) are provided. The two baffles (2) are arranged oppositely, and a conveyor belt (3) and an adjusting mechanism (4) are arranged between the baffles (2). Fixing mechanisms (5) are symmetrically arranged on the adjusting mechanism (4), and a guiding plate (6) is arranged between the fixing mechanism (5) and the inner wall of the baffle (2); The adjusting mechanism (4) includes a first driving motor (8) arranged on the side wall of the baffle (2) and a first driving screw rod (9) connected to the output end of the first driving motor (8). The first driving screw rod (9) is arranged between the baffles (2). There are two sections of threads with opposite directions on the first driving screw rod (9), and the two sections of threads are symmetrically arranged with respect to the midline position of the first driving screw rod (9). A connecting rod (10) is arranged on the side wall of the fixing mechanism (5), and a driving block (11) is arranged at the bottom of the connecting rod (10). The first driving screw rod (9) penetrates through the driving block (11) and is slidably connected to the driving block (11), and the two driving blocks (11) are respectively located on the two sections of threads.

2. The rectangular air duct sheet metal flanging machine according to claim 1, characterized in that, The fixing mechanism (5) includes a fixing plate (12), and mounting plates (13) and pressing plates (14) are respectively arranged at the upper and lower ends of the fixing plate (12). A plurality of second driving motors (15) are arranged at the bottom of the mounting plate (13), and a lifting plate (16) parallel to the pressing plate (14) is arranged at the output end of the second driving motor (15).

3. The rectangular air duct sheet metal flanging machine according to claim 2, characterized in that, Mounting grooves (17) are arranged on both the pressing plate (14) and the lifting plate (16), and a plurality of rollers (18) are arranged in the mounting grooves (17).

4. The rectangular air duct sheet metal flanging machine according to claim 2, characterized in that, A first groove (19) is arranged at the bottom of the fixing plate (12), and a driving gear (20) and a plurality of driven gears (21) are arranged in the first groove (19). The driving gear (20) and the plurality of driven gears (21) are respectively connected to the rollers (18) arranged in the pressing plate (14). A third driving motor (22) is also arranged in the first groove (19), and the output end of the third driving motor (22) is connected to the driving gear (20), and the driving gear (20) and the driven gears (21) are meshed in sequence.

5. The rectangular air duct sheet metal flanging machine according to claim 1, characterized in that, A guide rail (23) is arranged on the base (1), and a cavity (24) corresponding to the guide rail (23) is arranged at the bottom of the driving block (11).

6. The rectangular air duct sheet metal flanging machine according to claim 5, wherein, A bracket (25) is arranged on the guide rail (23), a plurality of conveyor wheels (27) are arranged at the top end of the bracket (25), and a rotating channel (26) corresponding to the first driving screw rod (9) is arranged at the bottom of the bracket (25).

7. The rectangular air duct sheet metal flanging machine according to claim 6, characterized in that, The conveyor wheels (27) are at the same horizontal height as the conveying surfaces of the conveyor belt (3), the fixing mechanism (5) and the flanging platform (7).

8. The rectangular air duct sheet metal flanging machine according to claim 1, characterized in that A connecting member (28) is provided on the side wall of the fixing mechanism (5). One end of the connecting member (28) is rotatably connected to one end of the guiding plate (6). A second groove (29) is formed in the side wall of the baffle (2). Chutes (30) are provided at the upper and lower ends of the second groove (29). A sliding rod (31) is provided at the end of the guiding plate (6) that is not connected to the connecting member (28). The sliding rod (31) is slidably connected to the chutes (30).

9. The rectangular air duct sheet metal hemming machine according to claim 1, characterized in that, The hemming platform (7) includes columns (32), a movable pressing plate (33), a second driving screw rod (34), and a fixed pressing plate (37). The columns (32) are symmetrically arranged on the base (1). The movable pressing plate (33) is arranged between the columns (32). The second driving screw rod (34) is arranged inside the columns (32). A fourth driving motor (35) is provided on the columns (32). The output end of the fourth driving motor (35) is connected to the second driving screw rod (34). A slider (36) is sleeved outside the second driving screw rod (34). Grooves corresponding to the slider (36) are provided on the columns (32). The slider (36) is fixedly connected to the movable pressing plate (33) through the grooves. The fixed pressing plate (37) is located below the movable pressing plate (33).

10. The rectangular air duct sheet metal hemming machine according to claim 9, wherein The hemming platform (7) further includes a bending plate (38). The bending plate (38) is arranged between the columns (32). Rotating shafts are provided at both ends of the bending plate (38) close to the fixed pressing plate (37). A fifth driving motor (39) is arranged inside the columns (32). The output end of the fifth driving motor (39) is connected to the rotating shafts. Limit blocks (40) are provided at both ends of the bending plate (38) far from the rotating shafts. Arc-shaped grooves corresponding to the limit blocks (40) are provided on the movable pressing plate (33).

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