Pipe fitting bending device easy to operate

Abstract

The utility model discloses an easy-to-operate pipe fitting bending device, which comprises a bending frame, a handle mechanism, a bending mechanism, a bending mechanism and a driving mechanism, wherein one end of the bending frame is provided with a grab handle mechanism; the inner pressing ring is rotationally mounted at the other end of the inner side of the bending frame, and an outer pressing ring matched with the inner pressing ring to bend the pipe fitting is rotationally arranged in the middle of the inner side of the bending frame; the outer surface of the inner pressing ring is provided with a limiting groove, and the bottom end of the inner side of the limiting groove is provided with a convex rib used for extruding the wall of a pipe fitting during bending. Through the arrangement of the rotating outer pressing ring and the convex ribs, the situations that in the arc bending action, friction force is large, a pipe fitting is damaged, in the arc bending process, the inner wall of the bent position of the pipe fitting is inconvenient to extrude, and consequently disordered deformation of the inner wall pipe fitting is caused are avoided, the device is simple in structure, friction is reduced, and the inner wall of the bent position can be continuously extruded.

Description

Technical Field

[0001] The utility model specifically relates to an easy-to-operate pipe bending device. Background Art

[0002] "Component" is a broad term, usually referring to a part or element used to build, assemble or compose a system. When square tube components are used, they need to be bent and formed to adapt to different layout and design requirements. When bending square tube fittings with lower strength, they are mostly bent by manual bending devices.

[0003] During the use of the existing manual pipe bending device, the friction between the bent pipe and the pipe bending device is mostly static friction, and the friction force is large. Manual pipe bending requires greater force, and it is not convenient to extrude the inner wall of the bend, resulting in disordered deformation of the inner wall of the pipe, affecting the bending effect. For this reason, we propose an easy-to-operate pipe bending device. Utility Model Content

[0004] The purpose of the utility model is to provide an easy-to-operate pipe bending device to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an easy-to-operate pipe bending device, comprising:

[0006] A bending frame, wherein a handle mechanism is provided at one end of the bending frame;

[0007] An inner pressure ring is rotatably mounted on the other end of the inner side of the bending frame, and an outer pressure ring is rotatably arranged in the middle of the inner side of the bending frame to cooperate with the inner pressure ring to bend the pipe fitting;

[0008] Wherein, the outer surface of the inner pressure ring is provided with a limiting groove, and the inner bottom end of the limiting groove is provided with a convex rib for squeezing the wall of the pipe during bending.

[0009] Preferably, the handle mechanism comprises a connecting plate, a handle and a threaded column, the connecting plate is fixed to the inner side of one end of the bending frame, and a threaded column is arranged on the connecting plate, and the handle is installed on the threaded column through a threaded groove at one end.

[0010] Preferably, the handle is cylindrical, and the other end of the handle is provided with a chamfer.

[0011] Preferably, the connecting plate and the threaded column form a "T" shape, and the connecting plate is fixed to the bending frame by welding.

[0012] Preferably, a pin shaft is provided at one end of the inner side of the bending frame, and the inner pressure ring is rotatably engaged with the pin shaft through a pin hole provided on the inner side thereof.

[0013] Preferably, the inner pressure ring and the outer pressure ring are both circular, and the outer diameter of the inner pressure ring is greater than the outer diameter of the outer pressure ring.

[0014] Preferably, the bending frame is plate-shaped, and the bending frame is provided at two locations.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] By providing a rotating outer pressure ring and convex ribs, it is avoided that the friction force is large during the bending action, which may cause damage to the pipe fittings, and it is not convenient to squeeze the inner wall of the pipe fitting at the bending point during the bending action, which may cause disordered deformation of the inner wall of the pipe fittings. The device has a simple structure, reduces friction, and can continue to squeeze the inner wall of the bending point, thereby improving the bending effect. It is easy to operate and easy to carry and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the internal pressure ring of the utility model;

[0019] Figure 3 This is a schematic diagram of the handle structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the threaded column of the utility model.

[0021] In the figure: 1, bending frame; 2, inner pressure ring; 21, limiting groove; 22, convex rib; 3, outer pressure ring; 41, connecting plate; 42, handle; 43, threaded column; 5, pin shaft. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-Figure 4 The utility model provides a technical solution: an easy-to-operate pipe bending device, comprising:

[0024] A bending frame 1, one end of which is provided with a handle mechanism, so as to facilitate better adjustment of the position of the bending frame 1 through the handle mechanism to bend the pipe fitting;

[0025] The inner pressure ring 2 is rotatably mounted on the other end of the inner side of the bending frame 1, and the outer pressure ring 3 is rotatably arranged in the middle of the inner side of the bending frame 1 to cooperate with the inner pressure ring 2 to press and bend the pipe fitting, so as to facilitate rapid bending of the pipe fitting;

[0026] Among them, the outer surface of the inner pressure ring 2 is provided with a limiting groove 21, which is convenient for positioning the pipe fitting and limiting the movement of the pipe fitting, and the inner bottom end of the limiting groove 21 is provided with a convex rib 22 for squeezing the pipe fitting wall during bending, so as to squeeze the inner wall of the pipe fitting at the bending point when bending the arc, so as to limit the disordered deformation caused by the excessive length of the inner wall.

[0027] In this embodiment, preferably, the handle mechanism includes a connecting plate 41, a handle 42 and a threaded column 43. The connecting plate 41 is fixed to the inner side of one end of the bending frame 1, and a threaded column 43 is provided on the connecting plate 41. The handle 42 is installed on the threaded column 43 through a threaded groove at one end, which is convenient for bending operation through the handle 42 and easy to disassemble and assemble.

[0028] In this embodiment, preferably, the handle 42 is cylindrical, and the other end of the handle 42 is provided with a chamfer to facilitate a better grip.

[0029] In this embodiment, preferably, the connecting plate 41 and the threaded column 43 form a “T” shape, and the connecting plate 41 is fixed to the bending frame 1 by welding.

[0030] In this embodiment, preferably, a pin shaft 5 is provided at one end of the inner side of the bending frame 1, and the inner pressure ring 2 is rotatably matched with the pin shaft 5 through a pin hole provided on the inner side thereof, so as to facilitate rotatable installation of the inner pressure ring 2.

[0031] In this embodiment, preferably, both the inner pressure ring 2 and the outer pressure ring 3 are circular, and the outer diameter of the inner pressure ring 2 is greater than the outer diameter of the outer pressure ring 3 .

[0032] In this embodiment, preferably, the bending frame 1 is plate-shaped, and the bending frame 1 is provided at two locations.

[0033] The working principle and use process of the utility model are as follows: when in use, first fix one end of the square tube, and then extend the other end of the square tube between the inner pressure ring 2 and the outer pressure ring 3, then pull the handle 42, the handle 42 drives the outer pressure ring 3 to move through the bending frame 1, the outer pressure ring 3 squeezes the square tube to make the square tube bend and deform, during the deformation process, the convex rib 22 squeezes the inner wall of the bending part of the square tube inwardly, reducing the disordered deformation of the pipe fitting with too long inner wall during bending, and during bending, through the rotation of the outer pressure ring 3 itself, the original plane friction between the pipe fitting and the outer pressure ring 3 is changed into rolling point contact, reducing friction resistance and completing the arc bending operation, when not in use later, the handle 42 can be rotated to separate from the threaded column 43 to improve the storage and placement effect of the device.

[0034] Although 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. An easy-to-operate pipe bending device, characterized in that: include: A bending frame (1), wherein a handle mechanism is provided at one end of the bending frame (1); An inner pressure ring (2) is rotatably mounted on the other end of the inner side of the bending frame (1), and an outer pressure ring (3) is rotatably arranged in the middle of the inner side of the bending frame (1) to cooperate with the inner pressure ring (2) to press and bend the pipe fitting; The outer surface of the inner pressure ring (2) is provided with a limiting groove (21), and the inner bottom end of the limiting groove (21) is provided with a convex rib (22) for squeezing the wall of the pipe during bending.

2. An easy-to-operate pipe bending device according to claim 1, characterized in that: The handle mechanism comprises a connecting plate (41), a handle (42) and a threaded column (43); the connecting plate (41) is fixed to the inner side of one end of the bending frame (1); the connecting plate (41) is provided with a threaded column (43); and the handle (42) is installed on the threaded column (43) through a threaded groove at one end.

3. An easy-to-operate pipe bending device according to claim 2, characterized in that: The handle (42) is cylindrical, and the other end of the handle (42) is provided with a chamfer.

4. An easy-to-operate pipe bending device according to claim 2, characterized in that: The connecting plate (41) and the threaded column (43) form a "T" shape, and the connecting plate (41) is fixed to the bending frame (1) by welding.

5. The easy-to-operate pipe bending device according to claim 1, characterized in that: A pin shaft (5) is provided at one end of the inner side of the bending frame (1), and the inner pressure ring (2) is rotatably matched with the pin shaft (5) through a pin hole provided on the inner side thereof.

6. An easy-to-operate pipe bending device according to claim 1, characterized in that: The inner pressure ring (2) and the outer pressure ring (3) are both circular, and the outer diameter of the inner pressure ring (2) is greater than the outer diameter of the outer pressure ring (3).

7. An easy-to-operate pipe bending device according to claim 1, characterized in that: The bending frame (1) is plate-shaped, and the bending frame (1) is provided at two locations.

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