CN211437813U - Pipe press - Google Patents

Abstract

A tube press comprising: a cylinder body; the end cover is fixedly arranged at the front end of the cylinder body; a piston rod arranged in the cylinder body in a sliding manner, and a working cavity is formed between the piston rod and the rear end of the cylinder body; the pressing blocks are abutted between the end cover and the piston rod, and the pressing blocks and the piston rod are abutted through mutually matched inclined planes, so that the pressing blocks can be driven to move along the radial direction when the piston rod moves along the axial direction; and a manual hydraulic pump connected to the working chamber. The utility model discloses a tube pressing machine adopts manual hydraulic pump to drive, need not to adopt electric oil pump fuel feeding and automatically controlled valve to control, and the drive mode is simple, and action execution part simple structure, compactness are favorable to miniaturization, the light-duty of tube pressing machine.

Description

Pipe press

Technical Field

The utility model relates to a tube pressing machine.

Background

The oil pipe is a pipeline used for conveying oil liquid in an oil way and generally comprises a steel wire mesh framework layer and an oil-resistant and corrosion-resistant synthetic rubber layer arranged inside and outside the steel wire mesh framework layer. The end part of the oil pipe needs to be fixed with a joint, the joint is firstly sleeved on the end part of the oil pipe and then is compressed and fixed through a pipe pressing machine. The structure and the driving mode of the pipe pressing machine in the prior art are complex.

SUMMERY OF THE UTILITY MODEL

According to the utility model discloses an aspect provides pipe press, include:

a cylinder body;

the end cover is fixedly arranged at the front end of the cylinder body;

a piston rod arranged in the cylinder body in a sliding manner, and a working cavity is formed between the piston rod and the rear end of the cylinder body;

the pressing blocks are abutted between the end cover and the piston rod, and the pressing blocks and the piston rod are abutted through mutually matched inclined planes, so that the pressing blocks can be driven to move along the radial direction when the piston rod moves along the axial direction; and

and the manual hydraulic pump is connected with the working cavity.

The utility model discloses a tube pressing machine adopts manual hydraulic pump to drive, need not to adopt electric oil pump fuel feeding and automatically controlled valve to control, and the drive mode is simple, and action execution part simple structure, compactness are favorable to miniaturization, the light-duty of tube pressing machine.

In some embodiments, the piston rod is formed with an inner wall narrowing from a front end to a rear end thereof, and the pressing piece is disposed in the piston rod and abuts against the inner wall.

In some embodiments, the pressure block and the end cap are in abutment by a vertical plane.

In some embodiments, the end cover is provided with a first through hole communicated with an inner cavity enclosed by the pressing block.

In some embodiments, a second through hole is formed in an end wall of the rear end of the cylinder body, and the rear end of the piston rod is disposed through the second through hole; an annular working cavity is formed between the piston rod and the rear end of the cylinder body.

In some embodiments, a manual hydraulic pump includes:

the oil storage cylinder is provided with an oil port, and the oil port is connected with the working cavity through an oil pipe;

the pressure lever is connected with the end part of the oil storage cylinder;

an unloading valve arranged on the oil storage cylinder.

Drawings

Fig. 1 is a perspective view of a tube press according to some embodiments of the present invention;

fig. 2 is a perspective view of a rear perspective of a tube press according to some embodiments of the present invention;

fig. 3 is a front view of a tube press according to some embodiments of the present invention;

fig. 4 is a cross-sectional view taken at a-a in fig. 3.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In the present invention, "front" or "front end" corresponds to the direction indicated by the arrow in fig. 4, and "rear" or "rear end" corresponds to the opposite direction indicated by the arrow in fig. 4.

Fig. 1-4 schematically illustrate a tube press according to some embodiments of the present invention, which includes a base 1, an end cap 2, a cylinder 3, a piston rod 4, a press block 6, a spring 7, an oil tube 8, and a manual hydraulic pump 9.

Referring to fig. 4, the cylinder 3 is fixed to the base 1. The cylinder 3 is a hollow cylinder with an inner cavity, the front end of the cylinder is open, and the end wall of the rear end is provided with a second through hole 31.

The end cover 2 is fixed at the front end of the cylinder body 3, and a first through hole 21 is arranged in the center of the end cover 2 and communicated with the inner cavity of the cylinder body 3.

The piston rod 4 is slidably disposed in the inner cavity of the cylinder 3, the front end of the piston rod is a piston end, and the rear end of the piston rod passes through the second through hole 31 of the cylinder 3, so that an annular working cavity 5 is formed between the piston rod 4 and the rear end of the cylinder 3, and is used for introducing hydraulic oil to drive the piston rod 4. The piston rod 4 is formed with a tapered inner wall 41 narrowing from its front end to its rear end.

The pressing pieces 6 are plural and are connected in series in a ring-like manner by springs 7, and are disposed between the end cap 2 and the piston rod 4. An inner cavity formed by the pressing blocks 6 is communicated with the first through hole 21 on the end cover 2, and the space is used for placing an oil pipe 8 to be processed. Specifically, the longitudinal section of the pressing block 6 is substantially triangular, the front end thereof forms a vertical plane abutting against the end cap 2, and the outer wall of the rear end forms an inclined plane abutting against the inner wall 41 of the piston rod 4. The pressing block 6 in the shape occupies a smaller space, and is more beneficial to the compact and miniaturized design of the pipe pressing machine. In other embodiments, the compacts may be of other shapes.

During operation, the oil pressure in the working cavity 5 pushes the piston rod 4 to move forwards along the axial direction, the inner wall 41 of the piston rod 4 pushes the rear end of the pressing block 6, and the front end of the pressing block 6 is abutted to the end cover 2, so that the pressing block 6 can only be compressed inwards along the radial direction, and meanwhile, the spring 7 connected with the pressing block 6 is compressed, so that the pressing of the oil pipe 8 to be processed is realized. When the oil pressure in the working chamber 5 is reduced, the spring 7 is expanded and released, so that the pressing block 6 is expanded radially outwards, the processed oil pipe 8 is loosened, and meanwhile, the piston rod 4 moves backwards in the axial direction to be reset under the combined action of the spring 7 and the negative pressure of the working chamber 5.

Referring to fig. 1-2, the manual hydraulic pump 9 is mounted on the base 1, and may be a commercially available product. The manual hydraulic pump 9 includes an oil reservoir 91, a pressure lever 92, and an unloading valve 93. The end of the oil storage cylinder 91 is provided with an oil port, and the oil port is connected with the working cavity 5 in the cylinder body 3 through an oil pipe 8 to realize oil supply. The pressure rod 92 is connected with the end of the oil storage cylinder 91 and is used for manually driving the piston inside the oil storage cylinder 91 to move so as to realize the pressurization of the hydraulic oil. The end of the oil reservoir 91 is also provided with an unloading valve 93 to effect oil return.

When the oil pipe pressing device is used, the end part of the oil pipe 8 sleeved with the joint extends into an inner cavity surrounded by the pressing block 6 from the end cover 2, then the pressing rod 92 is pressed back and forth, hydraulic oil is input into the working cavity 5 through the manual hydraulic pump 9, the pressing block 6 is driven to compress inwards through the piston rod 4, and the end part of the oil pipe 8 is pressed tightly; and after the pressing is finished, the unloading valve 93 on the manual hydraulic pump 9 is unscrewed, the hydraulic oil flows back, the piston rod 4 is reset, the pressing block 6 expands outwards, the oil pipe 8 is loosened, and the oil pipe 8 is taken out to finish the processing.

The utility model discloses a tube pressing machine adopts manual hydraulic pump to drive, need not to adopt electric oil pump fuel feeding and automatically controlled valve to control, and the drive mode is simple, and action execution part simple structure, compactness are favorable to miniaturization, the light-duty of tube pressing machine.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept of the present invention, several modifications and improvements can be made, or the above technical solutions can be freely combined, including the technical features between the above different embodiments, which all belong to the protection scope of the present invention.

Claims (6)

1. Pipe press, its characterized in that includes:

a cylinder body;

the end cover is fixedly arranged at the front end of the cylinder body;

a piston rod arranged in the cylinder body in a sliding manner, wherein a working cavity is formed between the piston rod and the rear end of the cylinder body;

the pressing blocks are abutted between the end cover and the piston rod, and the pressing blocks are abutted through mutually matched inclined planes, so that the pressing blocks can be driven to move along the radial direction when the piston rod moves along the axial direction; and

and the manual hydraulic pump is connected with the working cavity.

2. The tube press of claim 1, wherein: an inner wall which narrows from the front end to the rear end is formed in the piston rod, and the pressing block is arranged in the piston rod and is abutted against the inner wall.

3. The tube press of claim 1, wherein: the pressing block is abutted to the end cover through a vertical plane.

4. The tube press of claim 1, wherein: the end cover is provided with a first through hole communicated with an inner cavity defined by the pressing block.

5. The tube press of claim 1, wherein: a second through hole is formed in the end wall of the rear end of the cylinder body, and the rear end of the piston rod penetrates through the second through hole; and an annular working cavity is formed between the piston rod and the rear end of the cylinder body.

6. The tube press according to any one of claims 1 to 5, wherein the manual hydraulic pump comprises:

the oil storage cylinder is provided with an oil port, and the oil port is connected with the working cavity through an oil pipe;

the pressure lever is connected with the end part of the oil storage cylinder;

an unloading valve disposed on the oil storage cylinder.

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