Top pulling device in pipe bender

A technology of a jacking device and a pipe bender is applied in the field of pipe benders, which can solve the problems of inability to carry out and process, and achieve the effect of reducing the amount of thinning and avoiding the rupture of the pipe wall.

Inactive Publication Date: 2009-12-30
JIANGSU HEFENG MECHANICAL MAKING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the grabbing claw die 5 in this push device grabs the pipe, the length of the pipe is required not to be too short, because the pipe is too tube, and the grabbing claw die 5 will touch the pipe bending die when bending the pipe, and the pipe cannot be bent. conduct
Therefore, the current pipe bending machine cannot process short pipes, that is, short pipes with a short rear end, especially short pipes with a bending radius ≤ 1.5 times the outer diameter of the pipe.

Method used

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  • Top pulling device in pipe bender
  • Top pulling device in pipe bender
  • Top pulling device in pipe bender

Examples

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Embodiment Construction

[0012] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0013] Such as figure 2 As shown, the pushing device in the pipe bender of the present invention includes: a pushing pipe 1, a cylinder base 4, a double-outlet type pushing cylinder 5 arranged on the cylinder base 4, and a piston 51 of the pushing cylinder 5 There is a through operation hole 54 in the piston rods 52 and 53 located on the left and right sides of the piston. The end of the left piston rod 52 is connected with the push connecting pipe 2, and the push connecting pipe 2 is connected with the push pipe 1 again. The inner hole of the pipe 1 communicates with the inner hole of the push connecting pipe 2, and the inner hole of the pushing connecting pipe 2 communicates with the operation hole 54. The inner hole of the push tube 1 extends into the pipe material directly in front of the push tube 1, and the end of the piston rod 53 on ...

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PUM

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Abstract

The invention discloses a pushing device in a pipe bending machine, which can cause the pipe bending machine to bend short pipes; the pushing device comprises a pushing pipe, an oil cylinder base and a dual-outlet type pushing oil cylinder which is arranged on the oil cylinder base; a piston of the pushing oil cylinder and piston rods which are arranged at the left side and the right side of the piston are provided with perforated operation holes; the end part of the piston rod at the left side is provided with the pushing pipe; the internal hole of the pushing pipe is communicated with the operation hole; the end part of the piston rod at the right side is provided with a position limit nut by a thread; the oil cylinder base is movably arranged on a sliding plate which is movably arranged on a rack; the rack is provided with a positioning tooth; the side part of one side of the positioning tooth is embedded in the positioning concave trough of the sliding plate. A pushing connecting pipe with a hollow structure is also arranged between the pushing pipe and the piston rod. The pipe bending machine installed with the pushing device of the invention can be used for processing the short pipes, especially for the short pipes with the bending radius which is equal to or less than 1.5 times of the external diameter of the pipe.

Description

technical field [0001] The invention relates to a pipe bending machine, in particular to a pushing device in the pipe bending machine. Background technique [0002] As we all know, when the pipe bender bends small-radius pipes, it needs to use a pushing device, such as figure 1 As shown, its structure usually includes: a push cylinder 1 arranged on a push seat 2 and a double-outlet grab cylinder 3, and one end of the piston rod 4 of the grab cylinder 3 is provided with a tapered grip claw die 5. The other end of the piston rod 4 of the material grabbing cylinder 3 is set together with the piston rod of the jacking oil cylinder 1, and one side of the material grabbing cylinder 3 is also provided with a taper sleeve 6 matched with the material grabbing claw mold 5. When bending the pipe, the material grabbing cylinder 3 moves first, so that the cylinder body of the material grabbing cylinder 3 moves backward with the taper sleeve 6, so that the grabbing claw mold 5 is clamped...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D7/00B21D7/16
Inventor 林洪才周炳生
Owner JIANGSU HEFENG MECHANICAL MAKING
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