A galvanized air pipe bending device

Abstract

The utility model relates to the technical field of air pipe bending device, concretely to a galvanized air pipe bending device, include: work table, the upper end one side liftable installation of work table has the lifting piece, the upper end rotationally connected with the guide roller of lifting piece, the upper end rotationally connected with the pivot of support rod of work table, the outer wall rotationally connected with the rotary drum of pivot, the outer end fixed installation of rotary drum has the mounting block through the connecting rod, through the bending block of corresponding need bending's air pipe installation in the outer end of mounting block, and the height of adjusting guide roller, the one end of need bending's galvanized air pipe passes through from the upper end of guide roller, and inserts into the sleeve, then will hand screw bolt screw tightly, hold the handle and drive downward, handle can take rotary drum, mounting block and bending block rotation, let galvanized air pipe bend in air pipe groove, complete to the bending of galvanized steel pipe, to be convenient for to the bending of different size and shape's galvanized air pipe.

Description

Technical Field

[0001] This utility model relates to the technical field of duct bending devices, specifically a galvanized duct bending device. Background Technology

[0002] Air ducts are piping systems used for air transport and distribution. There are two types: composite ducts and inorganic ducts. Composite ducts are the most representative. They can be classified according to cross-sectional shape and material. Stainless steel duct fabrication involves applying sealant (such as neutral silicone sealant) to seams, rivet seams, and the four corners of flanges. Before applying sealant, surface dust and oil should be removed. According to cross-sectional shape, ducts can be divided into circular ducts, rectangular ducts, and flat oval ducts, among others. Circular ducts have the lowest resistance but the largest height and are more complex to manufacture.

[0003] When producing galvanized air ducts, the sheet metal needs to be bent. Traditionally, bending is done by placing the sheet metal on a bending machine. However, in some environments, the sheet metal needs to be bent on-site. Large bending machines are difficult to move, and some portable bending machines are manually fixed, which limits the bending process due to the size of the sheet metal. Utility Model Content

[0004] The purpose of this invention is to provide a galvanized duct bending device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a galvanized duct bending device, comprising: a workbench, a lifting block mounted on one side of the upper end of the workbench, a guide roller rotatably connected to the upper end of the lifting block, a rotating shaft rotatably connected to the upper end of the workbench via a support rod, and a rotating cylinder rotatably connected to the outer wall of the rotating shaft.

[0006] An installation block is fixedly installed on the outer end of the rotating drum via a connecting rod. A bending block is installed on the outer end of the installation block via a connecting component. A sleeve is fixedly installed on one end of the bending block, and a hand-tightening bolt is threaded onto the outer wall of the sleeve.

[0007] Furthermore, a through hole is formed at one end of the worktable, and teeth are fixedly installed on the inner wall of one end of the through hole. A threaded cylinder is fixedly installed on one side of the upper end of the worktable.

[0008] Furthermore, the lifting block has several toothed grooves on both the front and rear sides of its outer end. A threaded rod is threadedly connected to the threaded cylinder. One end of the threaded rod passes through the threaded cylinder and is rotatably connected to a toothed plate. The toothed plate engages with the toothed groove on one side of the lifting block, and the toothed groove and teeth at the other end of the lifting block engage with each other.

[0009] Furthermore, two bearings are fixedly sleeved at one end of the rotating shaft, and two support rods are fixedly installed at the lower end of each bearing. The lower ends of the support rods are fixed to the upper end of the worktable.

[0010] Furthermore, a limiting plate is fixedly installed at the other end of the rotating shaft, and a fixing nut is threadedly connected thereto, with the rotating cylinder located between the limiting plate and the fixing nut.

[0011] Furthermore, the connecting component includes a side plate fixed to one side of the mounting block, the side plate having several round holes, and the outer wall of the mounting block having several insertion slots evenly distributed.

[0012] Furthermore, the inner end of the bending block is fixedly installed with several plug-in blocks corresponding to the plug-in slots, and one side of the bending block is fixedly installed with several threaded posts corresponding to the round holes. When the bending block is sleeved on the outer end of the mounting block, the plug-in blocks are inserted into the plug-in slots, and at the same time, the threaded posts pass through the round holes and are threadedly connected to nuts.

[0013] Furthermore, a handle is fixedly installed at one end of the rotating drum.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] By installing the bending block corresponding to the duct that needs to be bent on the outer end of the mounting block and adjusting the height of the guide roller, one end of the galvanized duct that needs to be bent is passed through the upper end of the guide roller and inserted into the sleeve. Then, the hand-tightening bolt is tightened, the handle is held and driven downwards, and the handle will rotate the drum, mounting block and bending block, so that the galvanized duct is bent in the duct groove, thus completing the bending of the galvanized steel pipe, which makes it easy to bend galvanized ducts of different sizes and shapes. Attached Figure Description

[0016] Figure 1 This is a front view of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the back of the overall structure of this utility model;

[0018] Figure 3 This is a top view of the workbench of this utility model;

[0019] Figure 4 This is a schematic diagram of the exploded structure of part of this utility model;

[0020] Figure 5 This is a schematic diagram of the second exploded structure of this utility model.

[0021] In the diagram: 1. Workbench; 2. Through hole; 3. Tooth; 4. Lifting block; 5. Tooth groove; 6. Guide roller; 7. Threaded cylinder; 8. Threaded rod; 9. Tooth plate; 10. Rotating shaft; 11. Limiting plate; 12. Fixing nut; 13. Rotating cylinder; 14. Mounting block; 15. Insertion slot; 16. Side plate; 17. Bending block; 18. Threaded column; 19. Insertion block; 20. Sleeve; 21. Hand-tightening bolt; 22. Handle; 23. Bearing; 24. Support rod. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Please see Figures 1 to 5 This utility model provides a technical solution: a galvanized duct bending device, comprising: a workbench 1, a lifting block 4 mounted on one side of the upper end of the workbench 1, a guide roller 6 rotatably connected to the upper end of the lifting block 4, a through hole 2 at one end of the workbench 1, teeth 3 fixedly installed on the inner wall of one end of the through hole 2, a threaded cylinder 7 fixedly installed on one side of the upper end of the workbench 1, the threaded cylinder 7 being located on the side of the through hole 2 away from the teeth 3, several toothed grooves 5 being provided on both the front and rear sides of the outer end of the lifting block 4, the width of the through hole 2 being greater than the width of the lifting block 4, the lifting block 4 being able to move up and down within the through hole 2, a threaded rod 8 being threadedly connected inside the threaded cylinder 7, one end of the threaded rod 8 passing through the threaded cylinder 7 and rotatably connected to a toothed plate 9, by rotating the threaded rod 8, the toothed plate 9 and one side of the lifting block 4 abut against each other, the toothed plate 9 and one side of the toothed groove 5 of the lifting block 4 engaging, the toothed groove 5 at the other end of the lifting block 4 engaging with the teeth 3, fixing the lifting block 4, the lifting block 4 can move up and down within the through hole 2 with the guide roller 6.

[0024] The upper end of the workbench 1 is rotatably connected to a rotating shaft 10 via a support rod 24. Two bearings 23 are fixedly sleeved on one end of the rotating shaft 10. Two support rods 24 are fixedly installed on the lower end of each bearing 23. The lower end of the support rods 24 is fixed to the upper end of the workbench 1, and the rotating shaft 10 is rotatably installed on the upper end of the workbench 1. A rotating cylinder 13 is rotatably connected to the outer wall of the rotating shaft 10. A limit plate 11 is fixedly installed on the other end of the rotating shaft 10 and a fixing nut 12 is threadedly connected. The rotating cylinder 13 is located between the limit plate 11 and the fixing nut 12. The thickness of the rotating cylinder 13 is less than the distance between the fixing nut 12 and the limit plate 11. The limit plate 11 and the fixing nut 12 serve to limit the rotation of the rotating cylinder 13.

[0025] An mounting block 14 is fixedly installed on the outer end of the rotating drum 13 via a connecting rod. A bending block 17 is installed on the outer end of the mounting block 14 via a connecting component. Both the mounting block 14 and the bending block 17 are semi-circular. A duct groove is provided on the outer end of the bending block 17. A sleeve 20 is fixedly installed on one end of the bending block 17. A hand-tightening bolt 21 is threaded onto the outer wall of the sleeve 20. The duct groove and the sleeve 20 can be circular or rectangular to facilitate the connection of circular or rectangular ducts. When the bending block 17 and the guide roller 6 are on the same plane, and the width of the guide roller 6 is greater than the width of the bending block 17, the guide roller 6 can guide ducts of different sizes.

[0026] Specifically, by passing one end of the galvanized duct that needs to be bent through the upper end of the guide roller 6 and inserting it into the sleeve 20, and then tightening the hand-tightening bolt 21, the mounting block 14 and bending block 17 are driven to rotate, so that the galvanized duct is bent in the duct groove, thus completing the bending of the galvanized steel pipe.

[0027] like Figure 4 and Figure 5 As shown, in some embodiments, the connecting component includes a side plate 16 fixed to one side of the mounting block 14. The side plate 16 has several round holes. The outer wall of the mounting block 14 has several insertion slots 15 evenly distributed. The inner end of the bending block 17 is fixedly installed with several insertion blocks 19 corresponding to the insertion slots 15. The side of the bending block 17 is fixedly installed with several threaded posts 18 corresponding to the round holes. When the bending block 17 is sleeved on the outer end of the mounting block 14, the insertion blocks 19 are inserted into the insertion slots 15. At the same time, the threaded posts 18 pass through the round holes and are threaded with nuts. Meanwhile, one side of the bending block 17 abuts against the side plate 16, fixing the bending block 17 in place.

[0028] Specifically, by aligning the plug-in block 19 with the plug-in slot 15 and sliding the plug-in block 19 into the plug-in slot 15, the bending block 17 is fitted onto the outer end of the mounting block 14. At the same time, the threaded post 18 passes through the round hole and is threadedly connected to the nut, thereby fixing the bending block 17. When it is necessary to bend the duct of different sizes or shapes, the nut on the threaded post 18 can be unscrewed to remove the bending block 17 and replace it with the corresponding bending block 17.

[0029] like Figure 1 and Figure 2 As shown, in some embodiments, a handle 22 is fixedly installed at one end of the rotating drum 13. Specifically, an anti-slip sleeve is fixedly installed at the outer end of the handle 22. By gripping the handle 22 and driving it downward, the handle 22 can rotate the rotating drum 13, the mounting block 14 and the bending block 17.

[0030] When this device is in operation, the bending block 17 corresponding to the duct that needs to be bent is installed on the outer end of the mounting block 14, and the height of the guide roller 6 is adjusted. One end of the galvanized duct that needs to be bent is passed through the upper end of the guide roller 6 and inserted into the sleeve 20. Then, the hand-tightening bolt 21 is tightened, the handle 22 is held and driven downward. The handle 22 can rotate the rotating drum 13, the mounting block 14 and the bending block 17, so that the galvanized duct is bent in the duct groove, thus completing the bending of the galvanized steel pipe.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A galvanized duct bending device, characterized in that: include: Workbench (1), a lifting block (4) is installed on one side of the upper end of the workbench (1) and the upper end of the lifting block (4) is rotatably connected to a guide roller (6). The upper end of the workbench (1) is rotatably connected to a rotating shaft (10) via a support rod (24). A rotating cylinder (13) is rotatably connected to the outer wall of the rotating shaft (10). An installation block (14) is fixedly installed on the outer end of the rotating drum (13) via a connecting rod. A bending block (17) is installed on the outer end of the installation block (14) via a connecting component. A sleeve (20) is fixedly installed on one end of the bending block (17). A hand-tightening bolt (21) is threadedly connected to the outer wall of the sleeve (20).

2. The galvanized duct bending device according to claim 1, characterized in that: One end of the workbench (1) has a through hole (2), and teeth (3) are fixedly installed on the inner wall of one end of the through hole (2). A threaded cylinder (7) is fixedly installed on one side of the upper end of the workbench (1).

3. The galvanized duct bending device according to claim 2, characterized in that: The lifting block (4) has several toothed grooves (5) on both the front and rear sides of its outer end. The threaded cylinder (7) is internally threaded with a threaded rod (8). One end of the threaded rod (8) passes through the threaded cylinder (7) and is rotatably connected to a toothed plate (9). The toothed plate (9) engages with the toothed groove (5) on one side of the lifting block (4), and the toothed groove (5) and tooth (3) at the other end of the lifting block (4) engage.

4. The galvanized duct bending device according to claim 1, characterized in that: Two bearings (23) are fixedly sleeved at one end of the rotating shaft (10). Two support rods (24) are fixedly installed at the lower end of each bearing (23). The lower end of the support rods (24) is fixed to the upper end of the workbench (1).

5. A galvanized duct bending device according to claim 1, characterized in that: The other end of the rotating shaft (10) is fixedly installed with a limiting plate (11) and a fixed nut (12) is threadedly connected. The rotating cylinder (13) is located between the limiting plate (11) and the fixed nut (12).

6. The galvanized duct bending device according to claim 1, characterized in that: The connecting component includes a side plate (16) fixed to one side of the mounting block (14), the side plate (16) having a plurality of round holes, and the outer wall of the mounting block (14) having a plurality of insertion slots (15) evenly distributed.

7. A galvanized duct bending device according to claim 6, characterized in that: The inner end of the bending block (17) is fixedly installed with several plug-in blocks (19) corresponding to the plug-in slots (15). The side of the bending block (17) is fixedly installed with several threaded posts (18) corresponding to the round holes. When the bending block (17) is sleeved on the outer end of the mounting block (14), the plug-in block (19) is inserted into the plug-in slot (15), and at the same time, the threaded post (18) passes through the round hole and is threadedly connected to a nut.

8. A galvanized duct bending device according to claim 1, characterized in that: A handle (22) is fixedly installed at one end of the rotating drum (13).

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