Pipe clamping structure of double-bending machine

Abstract

The utility model relates to the technical field of double pipe bending machines, in particular to a pipe clamping structure of a double pipe bending machine, which is characterized in that a fixing sleeve is arranged, when a steel pipe needs to be bent, the steel pipe extends into the fixing sleeve, and when the steel pipe moves to a preset position, a rotating disc is adjusted, so that the steel pipe is fastened by a fastening plate; according to the steel pipe bending device, the steel pipe is supported and blocked, so that the situation that the bending precision of the steel pipe is poor due to displacement of the steel pipe during bending is avoided, meanwhile, the steel pipe can be protected when the steel pipe is clamped by the rubber cushion, and the situation that the strength of the steel pipe is damaged due to the fact that the outer surface of the steel pipe is sunken due to too large clamping force is avoided; due to the fact that the connecting sliding blocks and the connecting sliding grooves are fixed through the fixing plug pins, and the fixing blocks and the fixing grooves are fixed through the fixing plug pins, the corresponding fixing sleeves and the corresponding clamping plates can be replaced according to the actual specifications and sizes of the steel pipes, and the applicability of the whole clamping structure is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of double pipe bending machines, in particular to a pipe clamping structure of a double pipe bending machine. Background Art

[0002] Double pipe bending machine refers to a machine used for bending pipes and can also be used as a jack. It is roughly divided into CNC double pipe bending machine, hydraulic double pipe bending machine, etc. It is used in pipeline laying and repair in power construction, road and railway construction, bridges, ships, etc. It has the advantages of multiple functions, reasonable structure and simple operation.

[0003] However, the clamping device of the existing double pipe bending machine, when in use, is often used to fix the outer surface of the steel pipe. When the steel pipe is bent, since the length of the steel pipe is generally long, the steel pipe is often displaced during bending, resulting in poor bending accuracy of the steel pipe. At the same time, since the interior of the steel pipe is often hollow, when the clamping device clamps the steel pipe, if the clamping force is large, the outer surface of the steel pipe is often concave, thereby damaging the strength of the steel pipe. Utility Model Content

[0004] The purpose of the utility model is to provide a pipe clamping structure for a double bending machine to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pipe clamping structure of a double bending machine, comprising a first worktable, a second worktable, a rotating shaft, a splint and a fixed sleeve, the first worktable and the second worktable are connected by a rotating shaft, and the first mounting block and the second mounting block are respectively arranged on both sides of the top of the first worktable and the second worktable, and the inner surfaces of the first mounting block and the second mounting block are installed with connecting plates, the surface of the connecting plate is provided with a mounting plate, the surface of the mounting plate is provided with a splint, and the outer surface of the second mounting block is installed with a hydraulic cylinder, and the output shaft of the hydraulic cylinder is connected to the corresponding connecting plate, a fixing groove is opened at one end of the top of the first worktable, a fixing block is fixedly installed in the fixing groove, a fixing sleeve is installed on the top of the fixing block, a threaded sleeve is provided on the top of the fixing sleeve, a screw rod is threadedly connected to the threaded sleeve, the top of the screw rod is connected to a rotating disk, and the bottom end of the screw rod is connected to a fastening plate inside the fixing sleeve.

[0006] Preferably, a connecting groove is provided on the surface of the connecting plate, and a connecting slider is provided on the back of the mounting plate, and the connecting slider is slidably engaged with the connecting groove.

[0007] Preferably, the connecting slider and the connecting slot are fixed by a fixing pin.

[0008] Preferably, the fixing block and the fixing slot are fixed by a fixing pin.

[0009] Preferably, the inner surface of the clamping plate and the surface of the fastening plate are paved with rubber pads.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the utility model sets a fixed sleeve, when the steel pipe needs to be bent, the steel pipe is inserted into the fixed sleeve, when the steel pipe moves to the preset position, the rotating disk is adjusted, and the fastening plate fastens the steel pipe, that is, the steel pipe is supported and blocked, thereby avoiding displacement of the steel pipe during bending, resulting in poor bending accuracy of the steel pipe, and a hydraulic cylinder, a clamping plate and a rubber cushion are also set, the rubber cushion is evenly covered on one side of the clamping plate, and the hydraulic cylinder can push one side of the clamping plate to extend, thereby bringing The movable clamping plate slides on the first workbench and the second workbench and clamps the steel pipe, and the rubber pad can protect the steel pipe when clamping it, thereby avoiding the formation of dents on the outer surface of the steel pipe due to excessive clamping force, which damages the strength of the steel pipe; and because the connecting slider and the connecting slide groove are fixed by a fixing pin, and the fixing block and the fixing groove are fixed by a fixing pin, the corresponding fixing sleeve and clamping plate can be replaced according to the actual size of the steel pipe, which effectively improves the applicability of the entire clamping structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the fixed sleeve structure of the utility model.

[0013] In the figure: 1. first workbench; 2. second workbench; 3. rotating shaft; 4. clamping plate; 5. fixing sleeve; 6. first mounting block; 7. second mounting block; 8. connecting plate; 9. mounting plate; 10. connecting slide groove; 11. connecting slide block; 12. fixing groove; 13. fixing block; 14. fixing pin; 15. hydraulic cylinder; 16. fastening plate; 17. threaded sleeve; 18. screw rod; 19. rotating disk. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0016] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] See also Figure 1-2 The utility model provides a technical solution: a pipe clamping structure of a double bending machine, comprising a first workbench 1, a second workbench 2, a rotating shaft 3, a clamping plate 4 and a fixed sleeve 5. The first workbench 1 and the second workbench 2 are connected by the rotating shaft 3. The first workbench 1 and the second workbench 2 are respectively provided with a first mounting block 6 and a second mounting block 7 on both sides of the top. The first mounting block 6 and the second mounting block 7 are provided with a connecting plate 8 on the inner surface of the first mounting block 6 and the second mounting block 7. The surface of the connecting plate 8 is provided with a mounting plate 9. The surface of the mounting plate 9 is provided with a clamping plate 4. A hydraulic cylinder 15 is installed on the outer surface of the second mounting block 7. The output shaft of the hydraulic cylinder 15 is connected to the corresponding connecting plate 8. A fixing groove 12 is opened at one end of the top of the first workbench 1, and a fixing block 13 is fixedly installed in the fixing groove 12. A fixing sleeve 5 is installed on the top of the fixing block 13. A threaded sleeve 17 is provided on the top of the fixing sleeve 5. A screw rod 18 is threadedly connected to the threaded sleeve 17. A rotating disk 19 is connected to the top of the screw rod 18. A fastening plate 16 is connected to the bottom of the screw rod 18 inside the fixing sleeve 5.

[0018] Furthermore, a connecting groove 10 is provided on the surface of the connecting plate 8 , and a connecting slider 11 is provided on the back of the mounting plate 9 . The connecting slider 11 is slidably connected to the connecting groove 10 in an engaging manner.

[0019] Furthermore, the connecting slider 11 and the connecting slot 10 are fixed by a fixing pin 14 .

[0020] Furthermore, the fixing block 13 and the fixing slot 12 are fixed via a fixing pin 14 .

[0021] Furthermore, the inner surface of the clamping plate 4 and the surface of the fastening plate 16 are paved with rubber pads.

[0022] The utility model sets a fixed sleeve 5. When the steel pipe needs to be bent, the steel pipe is inserted into the fixed sleeve 5. When the steel pipe moves to a preset position, the rotating disk 19 is adjusted to make the fastening plate 16 fasten the steel pipe, that is, to support and block the steel pipe, thereby preventing the steel pipe from being displaced during bending, resulting in poor bending accuracy of the steel pipe. At the same time, a hydraulic cylinder 15, a clamping plate 4 and a rubber cushion are also set. The rubber cushion is evenly covered on one side of the clamping plate 4. The hydraulic cylinder 15 can push the clamping plate 4 on one side to extend, thereby driving the clamping plate 4 on the first workbench 1 and The second workbench 2 slides and clamps the steel pipe, and the rubber pad can protect the steel pipe when clamping it, so as to avoid the formation of dents on the outer surface of the steel pipe due to excessive clamping force, which will damage the strength of the steel pipe; and because the connecting slider 11 and the connecting slide groove 10 are fixed by the fixing pin 14, and the fixing block 13 and the fixing groove 12 are fixed by the fixing pin 14, the corresponding fixing sleeve 5 and the clamping plate 4 can be replaced according to the actual size of the steel pipe, which effectively improves the applicability of the entire clamping structure.

[0023] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipe clamping structure for a double bending machine, comprising a first workbench (1), a second workbench (2), a rotating shaft (3), a clamping plate (4) and a fixing sleeve (5), characterized in that: The first workbench (1) and the second workbench (2) are connected via a rotating shaft (3); a first mounting block (6) and a second mounting block (7) are respectively arranged on both sides of the top of the first workbench (1) and the second workbench (2); a connecting plate (8) is installed on the inner surface of the first mounting block (6) and the second mounting block (7); a mounting plate (9) is arranged on the surface of the connecting plate (8); a clamping plate (4) is arranged on the surface of the mounting plate (9); a hydraulic cylinder (15) is installed on the outer surface of the second mounting block (7); an output of the hydraulic cylinder (15) The shaft is connected to the corresponding connecting plate (8), a fixing groove (12) is provided at one end of the top of the first workbench (1), a fixing block (13) is fixedly mounted inside the fixing groove (12), a fixing sleeve (5) is mounted on the top of the fixing block (13), a threaded sleeve (17) is provided on the top of the fixing sleeve (5), a screw rod (18) is threadedly connected inside the threaded sleeve (17), a rotating disk (19) is connected to the top of the screw rod (18), and a fastening plate (16) is connected to the bottom of the screw rod (18) inside the fixing sleeve (5).

2. The pipe clamping structure of a double bending machine according to claim 1 is characterized in that: A connecting slide groove (10) is provided on the surface of the connecting plate (8), and a connecting slider (11) is provided on the back of the mounting plate (9). The connecting slider (11) is slidably connected to the connecting slide groove (10) in an engaging manner.

3. The pipe clamping structure of a double bending machine according to claim 2 is characterized in that: The connecting slide block (11) and the connecting slide groove (10) are fixed via a fixing pin (14).

4. The pipe clamping structure of a double bending machine according to claim 1 is characterized in that: The fixing block (13) and the fixing groove (12) are fixed via a fixing pin (14).

5. The pipe clamping structure of a double bending machine according to claim 1 is characterized in that: The inner surface of the clamping plate (4) and the surface of the fastening plate (16) are paved with rubber cushions.

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