Lubricant coating equipment for hot-expanded steel pipe

Abstract

The lubricant coating equipment comprises a machining table, one end of the machining table is provided with an opening, two limiting frames which directly face each other are fixed to the upper surface of the other end of the machining table, a rotatable driving roller is arranged between the two limiting frames, guide sliding columns are further fixed to the two side faces of the machining table, and the guide sliding columns are arranged on the two side faces of the machining table. The guide sliding column is sleeved with a sliding barrel capable of sliding in the transverse direction of the guide sliding column, a lubricant conveying pipe is further arranged above the machining table, and the end, pointing to the driving roller, of the lubricant conveying pipe is fixedly connected with an outer spraying pipe and an inner spraying pipe in a sealed mode. According to the lubricant coating equipment for the heat-expanded steel pipe, the driving roller is used for driving the steel pipe to rotate, so that the next step of uniformly coating a lubricant is facilitated, the inner wall of the steel pipe is uniformly coated by using the inner spraying pipe, the outer surface can be selectively coated according to requirements, and the lubricant is mechanically coated on the inner wall and the outer wall of the steel pipe instead of manual operation; and the coating speed is high, the coating is uniform, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of heat expansion pipe production equipment, in particular to heat expansion steel pipe lubricant coating equipment. Background Art

[0002] The hot expansion steel pipe forming process uses a special pipe expander, a core mold (commonly known as a core rod) and a heating device (commonly known as a heating coil) to make the blank on the mold move forward under the push of the pusher. During the movement, it is heated and expanded. Before hot expansion, a lubricant must be applied to the inner wall of the steel pipe to reduce the friction of the core rod. Traditional lubricant coating is done manually, which is slow, inefficient, and difficult to ensure uniform coating.

[0003] In order to solve the above problems, we propose a hot expansion steel pipe lubricant coating equipment to improve the shortcomings of the existing technology. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a lubricant coating device for hot-expanded steel pipes. In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] The utility model discloses a lubricant coating device for hot-expanded steel pipes, comprising a processing table, one end of the processing table is open, and two directly opposite limit frames are fixed to the upper surface of the other end of the processing table, a rotatable driving roller is arranged between the two limit frames, guide slide columns are also fixed to the two side surfaces of the processing table, a sliding cylinder which can slide laterally along the guide slide column is sleeved on the guide slide column, a lubricant delivery pipe is also arranged above the processing table, and the lubricant delivery pipe is connected to the sliding cylinder through two support plates, an outer spray pipe and an inner spray pipe are fixed and sealed to the end of the lubricant delivery pipe pointing to the driving roller, a feeding pipe is fixed and sealed to the lubricant delivery pipe, and limit rollers are also fixed to the inner walls on both sides of the limit frames.

[0006] Preferably, two opposite vertical plates are welded and fixed on the upper surface of the processing table, rotating rods are welded and fixed at the centers of both ends of the driving roller, and the other end of the rotating rod is connected to the inner side of the corresponding end vertical plate through a bearing, and a driving motor is also fixed to the bottom of the processing table, and a belt pulley is mounted and fixed on the output shaft of the driving motor and one of the rotating rods.

[0007] Preferably, a belt is tightly sleeved between the two belt pulleys.

[0008] Preferably, the ends of the outer spray pipe and the inner spray pipe are sealed, and a plurality of spray holes are evenly provided on the bottom side of the outer spray pipe and the inner side of the inner spray pipe.

[0009] Preferably, valves are provided on the outer spraying pipe, the inner spraying pipe and the feeding pipe.

[0010] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0011] By arranging two limit frames on the processing table, arranging limit rollers in the limit frames, and arranging a driving roller driven by a motor between the two limit frames, the steel pipe is placed on the limit frames, and the driving roller can be used to rotate the steel pipe, which is helpful for evenly coating the lubricant in the next step. By arranging a slidable lubricant delivery pipe above the processing table, and connecting an outer spray pipe and an inner spray pipe to the lubricant delivery pipe, the lubricant delivery pipe can be pushed to move the outer spray pipe and the inner spray pipe, and the inner spray pipe is extended to the inside of the steel pipe, and the outer spray pipe is extended to the outside of the steel pipe. The inner spray pipe is used to evenly coat the inner wall of the steel pipe, and the outer surface can be selectively coated according to needs. This kind of hot expansion steel pipe lubricant coating equipment adopts mechanization instead of manual labor to coat the lubricant on the inner and outer walls of the steel pipe. The coating speed is fast and even, which greatly improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

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

[0014] Figure 2 It is a schematic diagram of the structure of the utility model when the heat expansion tube is placed for lubricating oil coating;

[0015] Figure 3 It is a schematic diagram of the structure of the processing table in the utility model when viewed from above;

[0016] Figure 4 It is a structural schematic diagram of the connection between the lubricant delivery pipe and the slide cylinder in the utility model;

[0017] Figure 5 It is a structural schematic diagram of the utility model in which the heat expansion pipe is placed on the limit frame as viewed from the left;

[0018] Figure 6 This utility model Figure 1 Schematic diagram of the structure enlarged at point A in the middle.

[0019] In the figure: 1. processing table; 2. limit frame; 3. driving roller; 4. driving motor; 5. belt; 6. guide slide column; 7. slide cylinder; 8. lubricant delivery pipe; 9. support plate; 10. external spray pipe; 11. internal spray pipe; 12. feeding pipe; 13. limit roller; 14. vertical plate; 15. rotating rod; 16. belt pulley. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. Example

[0021] like Figure 1-6 As shown, a lubricant coating equipment for hot-expanded steel pipes comprises a processing table 1, one end of the processing table 1 is open, and two directly opposite limit frames 2 are fixed on the upper surface of the other end of the processing table 1, a rotatable driving roller 3 is arranged between the two limit frames 2, guide slide columns 6 are also fixed on the two side surfaces of the processing table 1, and a slide cylinder 7 which can slide laterally along the guide slide column 6 is sleeved, a lubricant delivery pipe 8 is also arranged above the processing table 1, and the lubricant delivery pipe 8 is connected to the slide cylinder 7 through two support plates 9, an outer spray pipe 10 and an inner spray pipe 11 are fixed and sealed to the end of the lubricant delivery pipe 8 pointing to the driving roller 3, a feed pipe 12 is fixed and sealed to the lubricant delivery pipe 8, and limit rollers 13 are also fixed to the inner walls on both sides of the limit frames 2, forming an integrated lubricant coating equipment for hot-expanded steel pipes, which has a fast and uniform coating speed, thereby greatly improving production efficiency.

[0022] In this embodiment, two opposite vertical plates 14 are welded and fixed on the upper surface of the processing table 1, and rotating rods 15 are welded and fixed at the centers of both ends of the driving roller 3, and the other end of the rotating rod 15 is connected to the inner side of the corresponding end vertical plate 14 through a bearing. A driving motor 4 is also fixed to the bottom of the processing table 1, and a belt pulley 16 is sleeved and fixed on the output shaft of the driving motor 4 and one of the rotating rods 15, so that the driving roller 3 can be used to rotate with the heat expansion tube, which helps to evenly coat the lubricant on the inner wall of the heat expansion tube.

[0023] In this embodiment, a belt 5 is tightly sleeved between the two belt pulleys 16 to provide a stable driving force.

[0024] In this embodiment, the ends of the outer spray pipe 10 and the inner spray pipe 11 are sealed, and a plurality of spray holes are evenly opened on the bottom side of the outer spray pipe 10 and the inner side of the inner spray pipe 11 for spraying lubricant for coating.

[0025] In this embodiment, valves are provided on the outer spray pipe 10, the inner spray pipe 11 and the feed pipe 12 to facilitate the control of the flow direction of the lubricant. The lubricant can be applied to the inner wall or outer surface of the thermal expansion tube as required.

[0026] The principles and advantages of this utility model: Figure 2 As shown, the heat expansion tube is placed flat on two limit frames 2, the driving motor 4 is turned on to rotate the driving roller 3, and the driving roller 3 rotates the heat expansion tube in the limit frame 2, and the lubricant supply pipe is connected to the feeding pipe 12. The handles at the outer end of the lubricant delivery pipe 8 are held with both hands, and the inner spray pipe 11 is inserted into the heat expansion tube. Then, the valves on the feeding pipe 12 and the inner spray pipe 11 are opened, and the lubricant is sent into the lubricant delivery pipe 8 under high pressure, and then evenly sprayed on the inner wall of the heat expansion tube through the spray holes on the inner spray pipe 11, so that the lubricant is coated on the inner wall of the heat expansion tube. The valve on the outer spray pipe 10 can also be opened as needed to coat the lubricant on the outer surface of the heat expansion surface. This kind of heat expansion steel tube lubricant coating equipment adopts mechanization instead of manual labor to coat the lubricant on the inner and outer walls of the steel tube. The coating speed is fast and uniform, which greatly improves the production efficiency.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A lubricant coating device for hot-expanded steel pipes, comprising a processing table (1), characterized in that: One end of the processing table (1) is open, and two directly opposite limit frames (2) are fixed on the upper surface of the other end of the processing table (1), and a rotatable driving roller (3) is arranged between the two limit frames (2). Guide slide columns (6) are also fixed on the two side surfaces of the processing table (1), and a slide cylinder (7) that can slide laterally along the guide slide column (6) is sleeved on the guide slide column (6). A lubricant delivery pipe (8) is also arranged above the processing table (1), and the lubricant delivery pipe (8) is connected to the slide cylinder (7) through two support plates (9). An outer spray pipe (10) and an inner spray pipe (11) are fixed and sealed to the end of the lubricant delivery pipe (8) pointing to the driving roller (3), and a feed pipe (12) is fixed and sealed to the lubricant delivery pipe (8). Limit rollers (13) are also fixed to the inner walls on both sides of the limit frame (2).

2. The lubricant coating equipment for hot-expanded steel pipe according to claim 1, characterized in that: Two vertical plates (14) facing each other are welded and fixed on the upper surface of the processing table (1), rotating rods (15) are welded and fixed at the centers of both ends of the driving roller (3), and the other end of the rotating rod (15) is connected to the inner side of the corresponding end vertical plate (14) through a bearing. A driving motor (4) is also fixed on the bottom of the processing table (1), and a belt pulley (16) is sleeved and fixed on the output shaft of the driving motor (4) and one of the rotating rods (15).

3. The lubricant coating equipment for hot-expanded steel pipe according to claim 2, characterized in that: A belt (5) is tightly sleeved between the two belt pulleys (16).

4. The lubricant coating equipment for hot-expanded steel pipe according to claim 1, characterized in that: The ends of the outer spray pipe (10) and the inner spray pipe (11) are sealed, and a plurality of spray holes are evenly provided on the bottom side of the outer spray pipe (10) and the inner side of the inner spray pipe (11).

5. The lubricant coating equipment for hot-expanded steel pipe according to claim 1, characterized in that: The outer spray pipe (10), the inner spray pipe (11) and the feed pipe (12) are all provided with valves.

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