A seamless steel tube pressing head apparatus

Abstract

The utility model relates to the technical field of steel pipe production equipment provides a seamless steel pipe pressure head equipment, including a plurality of pressure head mechanism that connects in proper order, and pressure head mechanism includes fixed frame, pressure head cylinder, pressure head unit and fixed establishment, and the fixed frame is provided with pressure head cylinder and fixed establishment, and the pressure head cylinder is provided with pressure head unit, and the pressure head cylinder is located fixed establishment's one side and is set up pressure head hole for steel pipe insertion, and fixed establishment can fix steel pipe, and drive steel pipe to be close to or away from pressure head cylinder, and fixed establishment can control the length that steel pipe inserts into pressure head cylinder, the utility model can conveniently adjust the pressure head length of steel pipe according to different steel pipe model.

Description

Technical Field

[0001] This utility model relates to the technical field of steel pipe production equipment, and in particular to a seamless steel pipe pressing head device. Background Technology

[0002] In the preparation of seamless steel pipes, the steel pipes need to be cold-drawn at room temperature. During cold drawing, one end of the steel pipe needs to be fixed. In order to ensure the stability of the cold drawing, the end of the steel pipe needs to be pressure-headed to ensure the stability of the cold drawing. CN207592453U discloses an automatic pressure-heading machine for seamless steel pipes, including a frame. A fixing frame for fixing a first hydraulic press is connected to one end of the frame. The output end of the first hydraulic press is connected to a first hydraulic rod. An upper die is connected to the first hydraulic rod. A lower die is set on the frame relative to the upper die. A first fixing block is provided between the lower die and the fixing frame. A first infrared sensor is connected to one end of the first fixing block. A feeding assembly is provided on the frame.

[0003] In existing technology, a pressure head device is used to process the ends of steel pipes with the same length of pressure head to meet the cold drawing requirements. However, when cold drawing steel pipes of different specifications, the same pressure head length will affect the cold drawing effect. Therefore, it is necessary to adjust the pressure head length of the steel pipe according to the material, diameter, wall thickness, etc. of the steel pipe to ensure the subsequent cold drawing effect of the steel pipe. Utility Model Content

[0004] This utility model provides a seamless steel pipe pressing head device, which can adjust different pressing head lengths to perform pressing head processing on steel pipes.

[0005] In view of this, the present invention aims to provide a seamless steel pipe pressing head device. In the present invention, the pressing head device includes several pressing head mechanisms connected in sequence, and each pressing head mechanism is capable of pressing a steel pipe.

[0006] The pressing head mechanism includes a fixed frame, a pressing head cylinder, a pressing head unit, and a fixing mechanism; the pressing head cylinder and the fixing mechanism are arranged inside the fixed frame, the pressing head unit is arranged inside the pressing head cylinder, and a pressing head hole for inserting a steel pipe is opened on the side of the pressing head cylinder facing the fixing mechanism;

[0007] The fixing mechanism can fix the steel pipe and move the steel pipe closer to or away from the pressure head cylinder, and the fixing mechanism can control the length of the steel pipe inserted into the pressure head cylinder.

[0008] Furthermore, the fixing mechanism includes a moving plate, a limiting plate, a driving unit, and a fixing unit;

[0009] The top of the fixed frame is provided with a slide rail, and the movable plate is slidably mounted on the slide rail; the bottom of the movable plate is connected to the limiting plate, and the limiting plate has a limiting hole for the steel pipe to pass through.

[0010] The driving unit is located on the moving plate and can drive the moving plate to move. The fixing unit is located on the limiting plate and can clamp and fix the steel pipe passing through the limiting hole.

[0011] Furthermore, the drive unit includes a rack disposed on the side of the fixed frame, a gear rotatably disposed on the bottom of the movable plate, and a drive motor for driving the gear to rotate, wherein the gear meshes with the rack for transmission.

[0012] Furthermore, the moving plates within each of the pressure head mechanisms are connected in sequence.

[0013] Furthermore, the fixing unit includes four tightening units evenly distributed around the periphery of the limiting hole, and the tightening unit includes a tightening cylinder mounted on the limiting plate and a tightening plate that is moved under the control of the tightening cylinder.

[0014] Furthermore, the pressing head unit includes two hydraulic presses respectively located at the top and bottom of the pressing head cylinder, and a forming die head connected to the hydraulic presses. The two hydraulic presses are arranged opposite to each other, and the two forming dies work together to press the end of the steel pipe.

[0015] The seamless steel pipe pressing head device disclosed in this utility model, through the setting of a fixed frame, pressing head cylinder, pressing head unit and fixing mechanism, fixes the steel pipe and drives the steel pipe to be inserted into the pressing head cylinder. By controlling the length of the steel pipe inserted into the pressing head cylinder, the length of the pressing head of the steel pipe is controlled, so as to achieve precise adjustment of the length of the pressing head at the end of the steel pipe, making it suitable for use with steel pipes of different specifications.

[0016] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0018] Figure 1 This is a structural schematic diagram of one embodiment of the present invention;

[0019] Figure 2 This is a cross-sectional schematic diagram of the pressure head mechanism in one embodiment of the present invention;

[0020] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 4This is a schematic diagram of the fixing mechanism in one embodiment of the present invention;

[0022] Figure 5 This is a cross-sectional schematic diagram of the pressure head cylinder in one embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] 100. Fixed frame; 110. Slide rail; 200. Press head cylinder; 210. Press head hole; 300. Press head unit; 310. Hydraulic press; 320. Forming die head; 400. Fixing mechanism; 410. Moving plate; 420. Limiting plate; 421. Limiting hole; 430. Rack; 440. Gear; 450. Tightening cylinder; 460. Tightening plate. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0027] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices. "Fixed" or "fixed connection" generally refers to common mechanical connection methods, such as threaded connections, welding, or bonding.

[0028] In existing technology, a pressure head device is used to process the ends of steel pipes with the same length of pressure head to meet the cold drawing requirements. However, when cold drawing steel pipes of different specifications, the same pressure head length will affect the cold drawing effect. Therefore, it is necessary to adjust the pressure head length of the steel pipe according to the material, diameter, wall thickness, etc. of the steel pipe to ensure the subsequent cold drawing effect of the steel pipe.

[0029] This utility model provides a seamless steel pipe pressing head device, such as... Figure 1 and Figure 2 As shown, in this embodiment, the pressing head device includes several pressing head mechanisms connected in sequence. Each pressing head mechanism can press one steel pipe, and multiple pressing head mechanisms can press multiple steel pipes, improving the pressing efficiency of the steel pipes. The pressing head mechanism is configured as a fixed frame 100, a pressing head cylinder 200, a pressing head unit 300, and a fixing mechanism 400. The pressing head cylinder 200 and the fixing mechanism 400 are both located inside the fixed frame 100. One side of the fixed frame 100 is for inserting steel pipes, and the fixed frame 100 is configured as a long strip structure. A pressing head unit 300 is provided inside the pressing head cylinder 200. A pressing head hole 210 for inserting steel pipes is opened on the side of the pressing head cylinder 200 facing the fixing mechanism 400. A position sensor is provided at the pressing head hole 210 to detect the length of the steel pipe inserted into the pressing head cylinder 200. The pressing head unit 300 can press the steel pipes that pass through the pressing head hole 210.

[0030] The fixing mechanism 400 can fix the steel pipe, so that the steel pipe can remain stable during the pressure head treatment; the fixing mechanism 400 can also move the steel pipe closer to or away from the pressure head cylinder 200, and can also drive the steel pipe to be inserted into the pressure head cylinder 200 for pressure head treatment; at the same time, the fixing mechanism 400 can control the length of the steel pipe inserted into the pressure head cylinder 200, and by controlling the length of the steel pipe inserted into the pressure head cylinder 200, the pressure head length of the steel pipe can be precisely controlled.

[0031] like Figure 4 As shown, the fixing mechanism 400 is configured as a movable plate 410, a limiting plate 420, a driving unit, and a fixing unit; a slide rail 110 is provided on the top of the fixing frame 100, and the movable plate 410 is slidably mounted on the slide rail 110; the bottom of the movable plate 410 is connected to the limiting plate 420, and a limiting hole 421 for the steel pipe to pass through is opened at the center of the limiting plate 420; the driving unit is provided on the movable plate 410 and can drive the movable plate 410 to move on the fixing frame 100, so that the movable plate 410 moves closer to or away from the pressure head cylinder 200; the fixing unit is provided on the limiting plate 420, and the fixing unit can clamp the steel pipe passing through the limiting hole 421, so that the clamped steel pipe can move closer to or away from the pressure head cylinder 200 as the movable plate 410 moves.

[0032] The fixing unit includes four clamping units installed on the limiting plate 420. The four clamping units are evenly arranged around the limiting hole 421. The steel pipe is clamped and fixed from four directions by the four clamping units. Each clamping unit includes a clamping cylinder 450 and a clamping plate 460. The clamping cylinder 450 is installed on the limiting plate 420. The clamping plate 460 is connected to the clamping cylinder 450 and moves under the control of the clamping cylinder 450, so that the clamping plate 460 moves closer to or away from the steel pipe. The side of the clamping plate 460 that is closer to the steel pipe is set as an arc surface to ensure the stability of clamping the steel pipe.

[0033] To ensure stable movement of the movable plate 410 on the fixed frame 100, such as Figure 3 As shown, the drive unit is configured as a rack 430, a gear 440, and a drive motor. The rack 430 is located on the side of the fixed frame 100, and its orientation is consistent with the movement path of the moving plate 410. The gear 440 is rotatably located at the bottom of the moving plate 410 and its rotation is controlled by the drive motor. The gear 440 is configured to mesh with the rack 430, so that when the drive motor drives the gear 440 to rotate, it drives the moving plate 410 to move on the fixed frame 100. At the same time, in order to synchronously control the operation of each pressure head mechanism, the moving plates 410 in each pressure head mechanism are connected in sequence, so that when one moving plate 410 moves, the other moving plates 410 move together.

[0034] In order to perform the pressing operation on the inserted steel pipe inside the pressing head cylinder 200, such as Figure 5 As shown, the pressing head unit 300 is configured as a hydraulic press 310 and a forming die head 320. A hydraulic press 310 is provided at the top and bottom of the pressing head cylinder 200. The forming die head 320 is connected to the output end of the hydraulic press 310 and moves under the control of the hydraulic press 310 to perform pressing head processing on the steel pipe. The two forming dies head 320 are arranged opposite to each other. The two forming dies head 320 in the pressing head cylinder 200 cooperate to perform pressing head processing on the end of the steel pipe.

[0035] In this invention, when the pressing head is in operation, the end of the steel pipe is first inserted into the limiting hole 421 of the limiting plate 420. Then, each clamping cylinder 450 is activated to drive the clamping plate 460 to clamp and fix the steel pipe from four directions, thus fixing the steel pipe on the limiting plate 420. Then, the required pressing head length is determined according to the steel pipe of this model and batch. The drive motor is activated to drive the gear 440 to rotate, which drives the moving plate 410, the limiting plate 420, and the steel pipe to move together closer to the pressing head cylinder 200, so that the steel pipe is inserted into the pressing head cylinder 200. The pressing head unit 300 performs pressing head processing on the steel pipe inserted into the pressing head cylinder 200. The distance of the steel pipe inserted into the pressing head cylinder 200 is controlled by the movement of the moving plate 410, thereby controlling the pressing head length of the steel pipe.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A seamless steel pipe pressing head device, characterized in that, It includes several pressing head mechanisms connected in sequence, each of which can press a steel pipe. The pressing head mechanism includes a fixed frame (100), a pressing head cylinder (200), a pressing head unit (300), and a fixing mechanism (400); the fixed frame (100) is provided with the pressing head cylinder (200) and the fixing mechanism (400), the pressing head cylinder (200) is provided with the pressing head unit (300), and the pressing head cylinder (200) has a pressing head hole (210) for inserting a steel pipe on the side facing the fixing mechanism (400); The fixing mechanism (400) can fix the steel pipe and move the steel pipe closer to or away from the pressure head cylinder (200), and the fixing mechanism (400) can control the length of the steel pipe inserted into the pressure head cylinder (200).

2. The seamless steel pipe pressing head equipment according to claim 1, characterized in that, The fixing mechanism (400) includes a moving plate (410), a limiting plate (420), a driving unit, and a fixing unit; The top of the fixed frame (100) is provided with a slide rail (110), and the movable plate (410) is slidably disposed on the slide rail (110); the bottom of the movable plate (410) is connected to the limiting plate (420), and the limiting plate (420) has a limiting hole (421) for the steel pipe to pass through. The driving unit is located on the moving plate (410) and can drive the moving plate (410) to move. The fixing unit is located on the limiting plate (420) and can clamp and fix the steel pipe passing through the limiting hole (421).

3. The seamless steel pipe pressing head equipment according to claim 2, characterized in that, The drive unit includes a rack (430) disposed on the side of the fixed frame (100), a gear (440) rotatably disposed on the bottom of the movable plate (410), and a drive motor for driving the gear (440) to rotate. The gear (440) meshes with the rack (430) for transmission.

4. The seamless steel pipe pressing head equipment according to claim 3, characterized in that, The movable plates (410) in each of the pressure head mechanisms are connected in sequence.

5. The seamless steel pipe pressing head equipment according to any one of claims 2-4, characterized in that, The fixing unit includes four clamping units evenly distributed around the periphery of the limiting hole (421). Each clamping unit includes a clamping cylinder (450) mounted on the limiting plate (420) and a clamping plate (460) that is moved under the control of the clamping cylinder (450).

6. The seamless steel pipe pressing head equipment according to claim 1, characterized in that, The pressure head unit (300) includes two hydraulic presses (310) respectively located at the top and bottom of the pressure head cylinder (200) and a forming die head (320) connected to the hydraulic presses (310). The two hydraulic presses (310) are arranged opposite to each other, and the two forming dies (320) cooperate to perform pressure head processing on the end of the steel pipe.

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