Portable bending machine

Abstract

The portable bending machine comprises a lower fixing plate, an upper fixing plate, an installation support, a telescopic hydraulic cylinder, a bending die and a limiting mechanism, the limiting mechanism comprises two limiting plates, threaded holes are formed in the upper fixing plate and the lower fixing plate, adjusting screw rods are installed in the threaded holes in a threaded mode, and the telescopic hydraulic cylinder is arranged on the installation support. The tail end of the rod portion of the adjusting screw abuts against the limiting plate, auxiliary through holes are formed in the two sides of the threaded hole, auxiliary sliding rods are installed in the auxiliary through holes in a sliding mode, one ends of the auxiliary sliding rods are connected with the limiting plate, and the other ends of the auxiliary sliding rods penetrate to the outer sides of the auxiliary through holes and are connected with limiting heads. The limiting plates are arranged on the upper side and the lower side of the pipe fitting, the upper side and the lower side of the pipe fitting are limited through the limiting plates when the pipe fitting is bent, the limiting plates limit the upper side and the lower side of the pipe fitting when the pipe fitting is bent, and displacement of the pipe fitting is prevented when the pipe fitting is bent.

Description

Technical Field

[0001] The utility model relates to the technical field of bending machines, in particular to the technical field of portable bending machines. Background Art

[0002] A pipe bender is a machine used for bending pipes and can also be used as a jack. It is roughly divided into CNC pipe bender, hydraulic pipe bender, etc. It is used in pipeline laying and repair in power construction, road and railway construction, bridges, ships, etc.

[0003] The existing portable manual bending machine uses a hydraulic cylinder to push the push frame to push the pipe forward, and cooperates with the bending die to bend the pipe. When the existing bending machine is bending, the pipe is limited only by the arc groove opened on the side of the push frame and the bending die. The pipe is easily displaced during bending, affecting the bending effect. Utility Model Content

[0004] The purpose of the utility model is to solve the problems in the prior art and to provide a portable bending machine that can solve the above problems.

[0005] The camming mechanism is a kind of mobile lifting device, and the camming mechanism is a kind of mobile lifting mechanism, and the camming mechanism is a kind of mobile lifting mechanism, and the camming mechanism is a kind of mobile lifting mechanism, and the camming mechanism is a kind of mobile lifting mechanism.

[0006] Preferably, an auxiliary sliding sleeve is provided in the auxiliary through hole, and the auxiliary through hole and the auxiliary sliding sleeve are slidably mounted.

[0007] Preferably, the bending mold includes a center column, an arc-shaped groove is opened on the center column, blocks are provided at both ends of the center column, an insert column is provided at the end of the block away from the center column, an annular magnet is provided between the block and the center column, and the annular magnet is magnetically adsorbed to the upper fixed plate or the lower fixed plate.

[0008] Preferably, the upper fixing plate and the lower fixing plate are both provided with a plurality of mounting holes for mounting the bending mold.

[0009] Preferably, the pushing frame is arc-shaped, and the pushing frame and the piston rod are detachably mounted.

[0010] Preferably, a movable bracket is provided at the bottom of the lower fixed plate and the telescopic hydraulic cylinder, and a sliding wheel is rotatably mounted on the movable bracket.

[0011] The beneficial effects of the utility model are as follows: the utility model sets limit plates on the upper and lower sides of the pipe fitting, and limits the upper and lower sides of the pipe fitting through the limit plates when bending. When the pipe fitting is bent, the limit plates limit the upper and lower sides of the pipe fitting to prevent the pipe fitting from being displaced during bending; the bending mold is magnetically adsorbed to the surfaces of the upper fixed plate and the lower fixed plate by the annular magnet, thereby enhancing the installation stability of the bending mold.

[0012] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the lower fixing plate of the utility model;

[0015] Figure 3 It is a side schematic diagram of the utility model;

[0016] Figure 4 It is a schematic diagram of a bending die of the utility model.

[0017] In the figure: 1-lower fixed plate, 2-upper fixed plate, 3-mounting bracket, 4-telescopic hydraulic cylinder, 5-bending mold, 6-pushing frame, 7-limiting plate, 8-adjusting screw, 9-auxiliary sliding rod, 10-mounting hole, 11-movable bracket, 12-sliding wheel, 51-center column, 52-arc groove, 53-block, 54-insertion column, 55-annular magnet, 71-threaded hole, 72-auxiliary through hole, 73-auxiliary sliding sleeve. DETAILED DESCRIPTION

[0018] See also Figure 1 , Figure 2 , Figure 3 and Figure 4, a portable bending machine comprises a lower fixed plate 1, an upper fixed plate 2, a mounting bracket 3, a telescopic hydraulic cylinder 4, a bending mold 5 and a limiting mechanism, the mounting bracket 3 is fixed to the rear of the lower fixed plate 1, the telescopic hydraulic cylinder 4 is fixed on the mounting bracket 3, the piston rod of the telescopic hydraulic cylinder 4 is connected to a pushing frame 6, the upper fixed plate 2 is rotatably connected to the mounting bracket 3 through a connecting rod, two detachable bending molds 5 are installed between the upper fixed plate 2 and the lower fixed plate 1, the pushing frame 6 is located between the two bending molds 5, and the limiting mechanism comprises two limiting plates 7, threaded holes 71 are provided on the upper fixed plate 2 and the lower fixed plate 1, an adjusting screw 8 is installed in the threaded hole 71, the rod end of the adjusting screw 8 is abutted against the limiting plate 7, auxiliary through holes 72 are provided on both sides of the threaded hole 71, an auxiliary sliding rod 9 is slidably installed in the auxiliary through hole 72, one end of the auxiliary sliding rod 9 is connected to the limiting plate 7 The auxiliary through hole 72 is provided with an auxiliary sleeve 73, and the auxiliary through hole 72 and the auxiliary sleeve 73 are slidably installed. The bending mold 5 includes a central column 51, and an arc groove 52 is provided on the central column 51. Blocks 53 are provided at both ends of the central column 51, and a plug column 54 is provided at the end of the block 53 away from the central column 51. An annular magnet 55 is provided between the block 53 and the central column 51, and the annular magnet 55 is magnetically adsorbed to the upper fixed plate 2 or the lower fixed plate 1. A plurality of mounting holes 10 for mounting the bending mold 5 are provided on the upper fixed plate 2 and the lower fixed plate 1. The pushing frame 6 is arc-shaped, and the pushing frame 6 and the piston rod are detachably installed. A movable bracket 11 is provided at the bottom of the lower fixed plate 1 and the telescopic hydraulic cylinder 4, and a sliding wheel 12 is rotatably installed on the movable bracket 11.

[0019] Working process of this utility model:

[0020] During the working process of the utility model, the bending die is first installed in a suitable installation hole 10, and then the upper fixing plate is rotated to complete the installation of the bending machine. Then, the pipe to be bent is placed between the bending die and the pushing frame, and then the adjusting screws on the upper and lower sides are rotated to make the limit plates on both sides contact the pipe, and then the telescopic hydraulic cylinder is started to drive the pushing frame to move forward to bend the pipe.

[0021] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. A portable bending machine, characterized in that: The invention comprises a lower fixed plate (1), an upper fixed plate (2), a mounting bracket (3), a telescopic hydraulic cylinder (4), a bending die (5) and a limiting mechanism, wherein the mounting bracket (3) is fixed to the rear of the lower fixed plate (1), the telescopic hydraulic cylinder (4) is fixed to the mounting bracket (3), the piston rod of the telescopic hydraulic cylinder (4) is connected to a pushing frame (6), the upper fixed plate (2) is rotatably connected to the mounting bracket (3) via a connecting rod, two detachable bending dies (5) are installed between the upper fixed plate (2) and the lower fixed plate (1), and the pushing frame (6) is located between the two bending dies (5) ), the limiting mechanism comprises two limiting plates (7), the upper fixing plate (2) and the lower fixing plate (1) are both provided with threaded holes (71), an adjusting screw (8) is threadedly installed in the threaded hole (71), the end of the rod of the adjusting screw (8) is in contact with the limiting plate (7), auxiliary through holes (72) are provided on both sides of the threaded hole (71), an auxiliary sliding rod (9) is slidably installed in the auxiliary through hole (72), one end of the auxiliary sliding rod (9) is connected to the limiting plate (7), and the other end passes through the outside of the auxiliary through hole (72) and is connected to the limiting head.

2. The portable bending machine according to claim 1, characterized in that: An auxiliary sliding sleeve (73) is provided in the auxiliary through hole (72), and the auxiliary through hole (72) and the auxiliary sliding sleeve (73) are slidably mounted.

3. The portable bending machine according to claim 1, characterized in that: The bending mold (5) comprises a central column (51), an arc-shaped groove (52) is provided on the central column (51), clamping blocks (53) are provided at both ends of the central column (51), an inserting column (54) is provided at one end of the clamping block (53) away from the central column (51), an annular magnet (55) is provided between the clamping block (53) and the central column (51), and the annular magnet (55) is magnetically attracted to the upper fixing plate (2) or the lower fixing plate (1).

4. The portable bending machine according to claim 1, characterized in that: The upper fixing plate (2) and the lower fixing plate (1) are both provided with a plurality of mounting holes (10) for mounting the bending mould (5).

5. The portable bending machine according to claim 1, characterized in that: The pushing frame (6) is arc-shaped, and the pushing frame (6) and the piston rod are detachably mounted.

6. The portable bending machine according to claim 1, characterized in that: A movable bracket (11) is provided at the bottom of the lower fixed plate (1) and the telescopic hydraulic cylinder (4), and a sliding wheel (12) is rotatably mounted on the movable bracket (11).

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