Bending device special for long and thin metal pipe

Abstract

The utility model discloses a special bending device for a slender metal pipe, which comprises a base, a pressing plate mounted on the base, a long circular through groove arranged between the bottom of the pressing plate and the base, two circular grooves respectively arranged on the left side and the right side of the pressing plate on the base, catch wheels fixedly mounted in the circular grooves, and semicircular grooves arranged on the side surfaces of the catch wheels. When the catch wheels are installed in the two circular grooves in one side, the catch wheels are not installed in the two circular grooves in the other side. The bending device disclosed by the utility model is good in economical efficiency and accurate in bending size. And compared with original pure manual knocking bending, the bending efficiency is higher, the size is more accurate, and the surface of the pipe is not prone to being damaged.

Description

Technical Field

[0001] The utility model relates to the field of mechanical manufacturing, and particularly to a special bending device for slender metal tubes in this field. Background Art

[0002] Figure 1 The structural characteristics of the shown slender metal tube are small diameter, thin wall, large total length dimension, unchanged middle part with longer length, and bending deformation with shorter and different sizes at both ends, and both ends are asymmetric. Figure 2 It is a partial sectional view of the left end of the slender metal tube. Figure 3 It is a partial sectional view of the right end of the slender metal tube. At present, the single-piece and small-batch bending processing is carried out by manual knocking. Not only is the processing efficiency low, but also the product quality is poor, and defective products are likely to appear. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a special bending device for slender metal tubes.

[0004] To solve the above technical problem, the utility model adopts the following technical scheme:

[0005] A special bending device for slender metal tubes, which is improved in that: it includes a base, a pressing plate is installed on the base, a long circular through groove is arranged between the bottom of the pressing plate and the base, two circular grooves are arranged on the left and right sides of the pressing plate on the base respectively, a retaining wheel can be fixedly installed in the circular groove, the side surface of the retaining wheel is a semi-circular groove, and when the retaining wheels are installed in the two circular grooves on one side, the retaining wheels are not installed in the two circular grooves on the other side.

[0006] Furthermore, the pressing plate is fixed on the base by two screws.

[0007] Furthermore, the retaining wheel is fixed in the circular groove of the base by one screw.

[0008] The beneficial effects of the utility model are:

[0009] The bending device disclosed by the utility model has good economy and accurate bending dimensions. It has higher efficiency and more accurate dimensions than the original pure manual knocking and bending, and is not easy to damage the surface of the pipe material.

[0010] The bending device disclosed by the utility model is simple to operate and use. An ordinary fitter technician can use this device to bend and process the slender metal tube into a finished product according to the technical requirements of the drawing by one person. The bent slender metal tube has no defects such as wedge deformation, oval deformation, fracture, etc., and fully meets the processing requirements of the drawing dimension accuracy, ensuring the processing quality and improving the processing efficiency. After many production experiments, no defective products have appeared. Description of the Drawings

[0011] Figure 1 It is a schematic structural diagram of a slender metal tube;

[0012] Figure 2 It is a partial sectional view of the left end of the slender metal tube;

[0013] Figure 3 It is a partial sectional view of the right end of the slender metal tube;

[0014] Figure 4 It is a schematic structural diagram of the bending device disclosed in Embodiment 1 of the present invention;

[0015] Figure 5 It is a schematic structural diagram of the bending device disclosed in Embodiment 2 of the present invention.

[0016] Reference numerals: 1 - retaining wheel, 2 - base, 3 - pressing plate, 4 - screw, 5 - slender metal tube. Detailed implementation manners

[0017] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0018] Embodiment 1, as Figure 4 shown, this embodiment discloses a special simple bending device for a slender metal tube 5, including a base 2, a pressing plate 3 is installed on the base, a long circular through groove is provided between the bottom of the pressing plate and the base, and the size of the long circular through groove is such that it can just press the tube to be bent. Two circular grooves are provided on each of the left and right sides of the pressing plate on the base, and a retaining wheel 1 can be fixedly installed in the circular grooves. The side surface (rotating surface) of the retaining wheel is a semi-circular groove, which can just press the tube to be bent; the retaining wheels are installed in the two circular grooves on the left side, and no retaining wheels are installed in the two circular grooves on the right side. The pressing plate is fixed on the base by two screws 4. The retaining wheel is fixed in the circular groove of the base by one screw.

[0019] Embodiment 2, as Figure 5 shown, the difference between this embodiment and Embodiment 1 is that the retaining wheels are installed in the two circular grooves on the right side, and no retaining wheels are installed in the two circular grooves on the left side.

[0020] During the bending process of the slender metal tube as Figure 1 shown, the processing is carried out according to the following steps:

[0021] First, according to the requirements of the drawing dimensions, the pressing plate and the two retaining wheels are respectively arranged as Figure 4Screw and fix it to the corresponding position of the base as shown, and then pass the slender metal tube through the pressing plate from the right side and out from the left side of the pressing plate. Under the limiting action of the pressing plate and the retaining wheel, the slender metal tube is bent and deformed according to the size and angle, and the bending at the left end is completed.

[0022] Remove the retaining wheel and the pressing plate, take out the semi-finished product of the bent slender metal tube, measure the size of the middle part and mark the starting position of the bending.

[0023] Again, according to the requirements of the drawing dimensions, screw the pressing plate and the two retaining wheels to the corresponding positions of the base respectively as Figure 5 shown, and then insert the right side of the slender metal tube into the long round through groove on the left side of the pressing plate and out from the right side of the pressing plate. Under the limiting action of the pressing plate and the retaining wheel, the slender metal tube is bent and deformed according to the size and angle, and the bending at the right end is completed.

[0024] At this point, after two bending deformations, the slender metal tube as Figure 1 shown is processed.

Claims

1. A special bending device for an elongated metal tube, characterized in that: It includes a base, a pressing plate is installed on the base, a long circular through groove is arranged between the bottom of the pressing plate and the base, two circular grooves are arranged on the left and right sides of the pressing plate on the base respectively, a retaining wheel can be fixedly installed in the circular groove, the side surface of the retaining wheel is a semi-circular groove, when the retaining wheels are installed in the two circular grooves on one side, the retaining wheels are not installed in the two circular grooves on the other side.

2. The special bending device for the slender metal tube according to claim 1, characterized in that: The pressing plate is fixed on the base by two screws.

3. The special bending device for the slender metal tube according to claim 1, characterized in that: The retaining wheel is fixed in the circular groove of the base by one screw.

Images