Steel pipe cold-drawing equipment

Abstract

The utility model relates to the field of steel pipe production and processing, and discloses steel pipe cold-drawing equipment which comprises a shell, a pressurizing mechanism is arranged in the shell and comprises a plurality of pressurizing plates and an inner mold, and the pressurizing plates are uniformly distributed around the inner mold in an annular radiation state; and a plurality of hydraulic cylinders are fixedly connected to the outer side surface of the pressurizing plate, and one end of the outer side of each hydraulic cylinder is fixedly connected to the inner wall of the shell. The multiple lubricating liquid spraying assemblies arranged around the steel pipe are adopted, lubricating liquid is sprayed to the surface of the steel pipe from different angles, all-directional dead-corner-free lubrication is achieved, the service life of a die is prolonged, the cold drawing quality of the die is improved, meanwhile, the lubricating liquid recycling tank is arranged at the bottom of the equipment, the lubricating liquid dripping in the drawing process is recycled and reused, and the production cost is reduced. The utilization rate of the lubricating liquid is improved and the cost is reduced; and through the closed cold-drawing design, the situation that in the cold-drawing process, the steel pipe is accidentally broken and sputtered, and operators are injured is prevented, and the operation safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of steel pipe production and processing, and particularly relates to a steel pipe cold-drawing equipment. BACKGROUND

[0002] The steel pipe cold-drawing equipment is a professional equipment for reducing the diameter and improving the quality of a steel pipe through cold processing, which applies a pulling force to the steel pipe to reduce the diameter of the pipe through a die. The working principle is based on plastic deformation of metal; cold drawing is to draw the steel pipe at room temperature. When a pulling force is applied to the steel pipe to make it pass through a die smaller than its original diameter, the steel pipe is plastically deformed. The grains inside the metal are elongated and refined along the drawing direction under the action of the pulling force, so that the strength and hardness of the steel pipe are increased. For example, the yield strength of a common carbon steel pipe can be increased by 20%-50% after cold drawing. Since the cold drawing process is carried out at room temperature, the chemical composition of the steel pipe will not be changed, but the microstructure and mechanical properties will be changed. This process can produce steel pipes with high dimensional accuracy and good surface quality, and is widely used in the fields of mechanical manufacturing, automobile industry, aerospace, etc.

[0003] In the existing steel pipe cold-drawing technology, the traditional cold-drawing equipment has many deficiencies. For example, the lubricating device of a common pipe drawing machine is generally in the form of smearing, which has dead angles or lacks of lubricating liquid, and often cannot achieve omnidirectional and uniform lubrication of the steel pipe, increasing the friction and affecting the cold-drawing effect and the service life of the die. In addition, the existing cold-drawing equipment cannot recycle and reuse the dripping lubricating liquid, causing resource waste; at the same time, the existing cold-drawing equipment has certain safety hazards, and the operator needs to wear protective articles such as safety helmets and protective gloves. Protective fences should be set around the equipment to prevent the steel pipe from breaking and flying out to hurt people during the cold-drawing process.

[0004] Therefore, the present inventor proposes a steel pipe cold-drawing equipment with omnidirectional and dead-angle-free lubrication and closed type to solve the above-mentioned problems and defects. CONTENT OF THE UTILITY MODEL

[0005] To solve the technical problems that the above-mentioned cold-drawing equipment cannot achieve omnidirectional and uniform lubrication of the steel pipe, increasing the friction and affecting the cold-drawing effect and the service life of the die, cannot recycle and reuse the dripping lubricating liquid, causing resource waste, and has certain safety hazards, the basic idea of the technical scheme of the utility model is as follows:

[0006] The utility model provides a kind of steel pipe cold-drawing equipment, including shell, pressurizing mechanism is arranged inside the shell, the pressurizing mechanism includes pressurizing plate and inner mould, the pressurizing plate is divided into several blocks, and it is evenly distributed in the surrounding of inner mould in annular radiation state, and the outside surface of pressurizing plate is fixedly connected with several hydraulic cylinders, the outside one end of hydraulic cylinder is fixedly connected on the inner wall of shell, and the inside surface of pressurizing plate is fixedly connected with several two two opposite support plates, the inside of the opposite two support plates is movably installed with press wheel mould, the roller surface of press wheel mould is provided with circular arc groove, the radian of this groove corresponds with the radian of the periphery of inner mould.

[0007] As a preferred embodiment of the utility model, one end of the shell is fixedly connected with a steel pipe inlet, the inner diameter of the steel pipe inlet corresponds to the outer diameter of the steel pipe to be cold-drawn, a plurality of recovery grooves are formed in the lower end of the shell, and a filter storage tank is fixedly connected below one end of the shell.

[0008] As a preferred embodiment of the utility model, the input end of the filter storage tank is fixedly connected with a converging pipe, a plurality of collection pipes are fixedly connected to the upper end of the converging pipe, the upper end of each collection pipe corresponds to and is sealingly connected to a recovery groove, and a pump is fixedly installed at the other end of the filter storage tank.

[0009] As a preferred embodiment of the utility model, a flow guide pipe is fixedly connected to the output port of the pump, a delivery pipe is fixedly connected to the upper end of the flow guide pipe, and the delivery pipe is connected in series to one end of the flow guide pipe, a fixed rod is fixedly connected to the periphery of the delivery pipe, and the other end of the fixed rod is fixedly connected to the inner wall of the shell.

[0010] As a preferred embodiment of the utility model, a plurality of spray pipes are fixedly connected to the pipe wall of the delivery pipe, the outer diameter of each spray pipe corresponds to the radian of the circular arc groove formed in the side of the pressurizing plate, and the spray opening of each spray pipe points towards the inner mould.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model discloses a plurality of lubricating liquid spraying assemblies arranged around the steel pipe, which sprays lubricating liquid to the surface of the steel pipe from different angles, realizes all-round and dead-angle-free lubrication, improves the service life of the mould and the cold-drawing quality, and at the same time, a lubricating liquid recovery groove is arranged at the bottom of the equipment to recover the lubricating liquid dripping during the drawing process, which is recycled for use, improves the utilization rate of the lubricating liquid, and reduces the cost.

[0013] The specific embodiments of the utility model will be described in further detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0014] In the drawings:

[0015] Figure 1 It is a part of the external three-dimensional front view schematic diagram of a steel pipe cold drawing equipment;

[0016] Figure 2 It is a part of the vertical longitudinal section schematic diagram of a steel pipe cold drawing equipment;

[0017] Figure 3 It is a part of the internal structure longitudinal section schematic diagram of a steel pipe cold drawing equipment;

[0018] Figure 4 It is a longitudinal section front view schematic diagram of a steel pipe cold drawing equipment;

[0019] Figure 5 It is an internal structure section side view schematic diagram of a steel pipe cold drawing equipment.

[0020] In the drawings: 1, shell; 2, steel pipe inlet; 3, inner mold; 4, filter storage tank; 5, convergence pipe; 6, pump; 7, collection pipe; 8, flow guide pipe; 9, conveying pipe; 10, pressurizing plate; 11, recovery tank; 12, hydraulic cylinder; 13, injection pipe; 14, pressure roller mold. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model, and the following embodiments are used to illustrate the utility model.

[0022] As Figures 1 to 5 shown, a steel pipe cold drawing equipment, including shell 1, shell 1 inside is provided with pressurizing mechanism, pressurizing mechanism includes pressurizing plate 10 and inner mold 3, pressurizing plate 10 is divided into several blocks, and evenly distributed in the surrounding of inner mold 3 in ring radiation state, and the outer side surface of pressurizing plate 10 is fixedly connected with several hydraulic cylinders 12, one end of the outer side of hydraulic cylinder 12 is fixedly connected on the inner wall of shell 1, and the inner side surface of pressurizing plate 10 is fixedly connected with several two two opposite support plates, the inner side of opposite two support plates movably installs pressure roller mold 14, the roller surface of pressure roller mold 14 is provided with circular recess, the radian of this recess corresponds with the radian of the periphery of inner mold 3.

[0023] In the present setting, through the closed cold drawing design, prevent the accidental breakage of steel pipe during cold drawing process, splashing, cause harm to the operator, improve the safety of operation.

[0024] As Figures 1 to 5As shown, in a specific embodiment, the input end of the filter storage tank 4 is fixedly connected to a converging pipe 5, the upper end of the converging pipe 5 is fixedly connected to a plurality of collecting pipes 7, the upper end of the collecting pipe 7 corresponds to the recovery tank 11 and is sealed and sleeved therewith, and the other end of the filter storage tank 4 is fixedly installed with a pump 6; one end of the outer shell 1 is fixedly connected to a steel pipe inlet 2, the inner diameter of the steel pipe inlet 2 corresponds to the outer diameter of the steel pipe to be cold-drawn, and a plurality of recovery tanks 11 are opened at the lower end of the outer shell 1, and the filter storage tank 4 is fixedly connected below one end of the outer shell 1.

[0025] In this setup, a lubricant recovery tank 11 is located at the bottom of the machine to recover lubricant that drips during the drawing process. A filter module is located within the filter storage tank 4, allowing the filtered lubricant to be recycled, improving lubricant utilization and reducing costs. The filter module also has a built-in liquid level sensor, which automatically alarms when the liquid level is too low, prompting the user to add new lubricant.

[0026] like Figures 1 to 5 As shown, in a specific embodiment, a plurality of injection pipes 13 are fixedly connected to the wall of the delivery pipe 9, the outer diameter curvature of the injection pipe 13 corresponds to the curvature of the circular arc groove opened on the side of the pressure plate 10, and the injection ports of the injection pipe 13 are all directed to the inner mold 3; a guide pipe 8 is fixedly connected to the output port of the pump 6, the upper end of the guide pipe 8 is fixedly connected to the delivery pipe 9, and the guide pipe 8 connects one end of the delivery pipe 9 in series, and a fixing rod is fixedly connected to the periphery of the delivery pipe 9, and the other end of the fixing rod is fixedly connected to the inner wall of the outer shell 1.

[0027] In this configuration, the lubrication system of the utility model features multiple lubricant spray assemblies arranged around the steel pipe. These spray assemblies are arranged in a ring around the steel pipe drawing path, spraying lubricant onto the steel pipe surface from various angles. Micro pressure sensors are installed within the spray assemblies, adjusting the spray force based on pressure feedback to ensure uniform and stable lubricant delivery.

[0028] The implementation principle of a steel pipe cold drawing equipment in this embodiment is as follows:

[0029] The lubricating system is provided with a plurality of lubricating liquid spraying assemblies arranged around the steel pipe. The spraying assemblies are annularly distributed around the steel pipe drawing path and can spray lubricating liquid to the surface of the steel pipe from different angles. A micro pressure sensor is arranged in the spraying assembly, which can adjust the spraying intensity according to the pressure feedback, so that the lubricating liquid can be uniformly and stably sprayed. A lubricating liquid recovery groove 11 is arranged at the bottom of the equipment to recover the lubricating liquid dripping in the drawing process. The inside of the filter storage tank 4 is provided with a filter module, and the filtered lubricating liquid can be recycled, so that the utilization rate of the lubricating liquid is improved, and the cost is reduced. Meanwhile, the filter module is provided with a liquid level sensor, which can automatically alarm and prompt to add new lubricating liquid when the liquid level is too low. Furthermore, through the closed cold drawing design, the accidental breakage and sputtering of the steel pipe in the cold drawing process are prevented, the harm to the operator is avoided, and the safety of operation is improved.

Claims

1. A steel pipe cold drawing equipment comprising a shell (1), characterized in that: the inside of the shell (1) is provided with a pressurizing mechanism, the pressurizing mechanism comprises a pressurizing plate (10) and an inner mold (3), the pressurizing plate (10) is divided into several blocks and is uniformly distributed in a ring radiation state around the inner mold (3), and the outer side surface of the pressurizing plate (10) is fixedly connected with several hydraulic cylinders (12), one end of the outer side of the hydraulic cylinder (12) is fixedly connected to the inner wall of the shell (1), and the inner side surface of the pressurizing plate (10) is fixedly connected with several support plates opposite to each other, the inner side of the two opposite support plates is movably installed with a press wheel mold (14), the roller surface of the press wheel mold (14) is provided with a circular arc groove, and the radius of the groove corresponds to the radius of the periphery of the inner mold (3).

2. A steel pipe cold-drawing apparatus according to claim 1, wherein One end of the shell (1) is fixedly connected with a steel pipe inlet (2), the inner diameter of the steel pipe inlet (2) corresponds to the outer diameter of the steel pipe to be cold drawn, and the lower end of the shell (1) is provided with several recovery grooves (11), and the lower end of the shell (1) is fixedly connected with a filter storage tank (4).

3. A steel pipe cold-drawing apparatus according to claim 2, wherein The input end of the filter storage tank (4) is fixedly connected with a converging pipe (5), the upper end of the converging pipe (5) is fixedly connected with several collecting pipes (7), the upper end of the collecting pipe (7) corresponds to the recovery groove (11) and is sealingly sleeved with it, and the other end of the filter storage tank (4) is fixedly installed with a pump (6).

4. A steel pipe cold-drawing apparatus according to claim 3, wherein The output port of the pump (6) is fixedly connected with a flow guide pipe (8), the upper end of the flow guide pipe (8) is fixedly connected with a conveying pipe (9), and the flow guide pipe (8) is connected in series with one end of the conveying pipe (9), the periphery of the conveying pipe (9) is fixedly connected with a fixed rod, and the other end of the fixed rod is fixedly connected to the inner wall of the shell (1).

5. A steel tube cold-drawing apparatus according to claim 4, wherein The pipe wall of the conveying pipe (9) is fixedly connected with several spray pipes (13), the outer diameter radius of the spray pipe (13) corresponds to the circular arc groove radius opened on the side of the pressurizing plate (10), and the spray ports of the spray pipes (13) all point to the inner mold (3).

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