Precise cold-drawn seamless steel tube double-die cold-drawing tool

Abstract

The utility model discloses a precise cold-drawn seamless steel pipe double-die cold-drawing tool which comprises a base, a first fixing plate is installed on the base, and a limiting hole used for movably inserting a first movable rod is formed in the first fixing plate; one end of the first movable rod is fixedly provided with a die head for expanding the diameter of a steel pipe, and the other end is driven by a driving mechanism mounted at one end of the base to move horizontally; a second movable rod is arranged on one side of the first fixing plate and used for pushing the steel pipe, and the second movable rod is driven by a driving mechanism installed at the other end of the base to move horizontally. The precise cold-drawing seamless steel pipe double-die cold-drawing tool relates to the technical field of cold drawing, and solves the problems that when cold drawing is carried out on a steel pipe in the prior art, the whole process needs to be operated by a plurality of workers, operation is troublesome, and time and labor are wasted.

Description

Technical Field

[0001] The utility model relates to the technical field of cold drawing, in particular to a double-die cold drawing tooling for a precision cold drawn seamless steel pipe. Background Art

[0002] Seamless steel pipe is a steel pipe made by perforating a whole round steel bar without welds on the surface. According to the production method, seamless steel pipe can be divided into hot-rolled seamless steel pipe, cold-rolled seamless steel pipe, cold-drawn seamless steel pipe, extruded seamless steel pipe, jacking pipe, etc.

[0003] According to a high-precision cold-drawn seamless steel pipe dual-die cold-drawing tooling disclosed in patent application number CN202122891619.4, the equipment is simple to operate, saves time and effort, and does not require multiple workers to operate. Only individual workers are required to put the pipe sleeve on the fixed shaft, and then start the first hydraulic cylinder and the second hydraulic cylinder. The mounting rod of the mold body can be effectively clamped and fixed, but it cannot fix seamless steel pipes of different sizes. When cold drawing seamless steel pipes of different sizes, the corresponding mold needs to be replaced, which affects the cold drawing efficiency of the seamless steel pipe, and the power output is not smooth enough when the hydraulic telescopic rod moves.

[0004] To this end, we propose a double-mode cold-drawing tooling for precision cold-drawn seamless steel pipes to solve the above-mentioned problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a double-die cold-drawing tooling for precision cold-drawn seamless steel pipes, which solves the problem that the prior art cannot fix seamless steel pipes of different sizes, and that corresponding moulds need to be replaced when cold-drawing seamless steel pipes of different sizes, affecting the cold-drawing efficiency of the seamless steel pipes, and the problem that the power output is not stable enough when the hydraulic telescopic rod moves.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a precision cold-drawn seamless steel pipe double-die cold-drawn tooling, comprising a base, a first fixing plate is installed on the base, and a limiting hole for movably plugging a first movable rod is opened on the first fixing plate;

[0007] A die head is fixedly mounted on one end of the first movable rod for expanding the diameter of the steel pipe, and the other end is driven to move horizontally by a driving mechanism mounted on one end of the base;

[0008] A second movable rod is provided on one side of the first fixed plate for pushing the steel pipe, and the second movable rod is driven to move horizontally by a driving mechanism installed at the other end of the base;

[0009] A locking assembly is installed at the end of the second movable rod for locking and fixing the steel pipe.

[0010] Preferably, a controller is installed on the base for controlling the electrical components.

[0011] Preferably, the inner diameter of the limiting hole is matched with the outer diameter of the pipeline, and the pipeline is movably clamped inside the limiting hole.

[0012] Preferably, the locking assembly comprises a locking ring fixed to one end of the second movable rod, and the locking ring is threadedly connected to a plurality of locking bolts distributed on its periphery at equal intervals.

[0013] Preferably, the driving mechanism includes a second fixed plate fixed on the base, a cylinder is installed on the second fixed plate, a piston rod is installed on the output end of the cylinder, a movable plate is installed on one end of the piston rod, the movable plate is installed on the base through a sliding assembly, a limiting rod movably inserted into the second fixed plate is installed on one side of the movable plate, and the other side of the movable plate is fixedly connected to the second movable rod or the first movable rod.

[0014] Preferably, the sliding assembly comprises a slide rail fixed on the base and a slider fixed on the bottom of the movable plate, and the slider is slidably connected to the slide rail.

[0015] Beneficial Effects

[0016] The utility model provides a double-mode cold-drawing tool for precision cold-drawn seamless steel pipes. Compared with the prior art, it has the following beneficial effects:

[0017] 1. This kind of precision cold-drawn seamless steel pipe double-die cold-drawing tooling, when in use, one end of the pipe is fixed to one end of the second movable rod through a locking assembly, and the other end is sleeved on the outer periphery of the die head at one end of the first movable rod. The locking assembly can be used to fix seamless steel pipes of different sizes. When cold-drawing seamless steel pipes of different sizes, there is no need to replace the corresponding molds, which improves the cold-drawing efficiency of the seamless steel pipe. Then, the second movable rod and the first movable rod are driven by the driving mechanism to move the pipe and the first movable rod respectively, and the pipe can be easily expanded in diameter in cooperation with the die head, which saves time and effort. Through the setting of the locking assembly, it is convenient to clamp and fix pipes of different diameters after expansion. The equipment is simple to operate, saves time and effort, and does not require multiple workers to operate. Only individual workers are required to fix the pipe on the second movable rod and then start the cylinder on the driving mechanism.

[0018] 2. This kind of double-mode cold-drawn tooling for precision cold-drawn seamless steel pipes, the driving mechanism includes a second fixed plate, a cylinder, etc. When the cylinder is started to drive the piston rod to extend and retract, it can drive the slider to slide on the slide rail, and the limit rod is limited and slidably connected to the second fixed plate, which can effectively improve the stability of the power output when the piston rod drives the movable plate to move, so that the movable plate is subjected to stable force when pushing the pipeline, effectively improving the expansion effect of the steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of the driving mechanism of the utility model;

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the locking assembly of the utility model.

[0022] In the figure: 1. base; 2. first fixed plate; 3. limiting hole; 4. first movable rod; 5. die head; 6. second movable rod; 7. locking assembly; 71. locking ring; 72. locking bolt; 8. driving mechanism; 81. second fixed plate; 82. cylinder; 83. piston rod; 84. movable plate; 85. slider; 86. slide rail; 87. limiting rod; 9. controller. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-3 , the utility model provides two technical solutions:

[0025] Embodiment 1:

[0026] A double-die cold-drawing tool for precision cold-drawn seamless steel pipes, comprising a base 1, a first fixing plate 2 is mounted on the base 1, and a limiting hole 3 for movably plugging a first movable rod 4 is provided on the first fixing plate 2;

[0027] A die head 5 is fixedly mounted on one end of the first movable rod 4 for expanding the diameter of the steel pipe, and the other end is driven to move horizontally by a driving mechanism 8 mounted on one end of the base 1;

[0028] A second movable rod 6 is provided on one side of the first fixed plate 2 for pushing the steel pipe, and the second movable rod 6 is driven to move horizontally by a driving mechanism 8 installed at the other end of the base 1;

[0029] A locking assembly 7 is installed at the end of the second movable rod 6 for locking and fixing the steel pipe.

[0030] Embodiment 2:

[0031] The main difference from the first embodiment is:

[0032] A double-mode cold-drawing tooling for precision cold-drawn seamless steel pipes, a controller 9 is installed on the base 1 for controlling the power components to improve the degree of automation; the inner diameter of the limiting hole 3 is adapted to the outer diameter of the pipeline, the pipeline is movably connected to the limiting hole 3, and the pipeline is inserted into the limiting hole 3 to provide limiting support for the pipeline when it expands and moves; the locking assembly 7 includes a locking ring 71 fixed to one end of the second movable rod 6, and the locking ring 71 is threadedly connected with a plurality of locking bolts 72 distributed at equal intervals on its outer circumference, and the pipeline inserted in the locking ring 71 can be locked and fixed by the plurality of locking bolts 72; the driving mechanism 8 includes a second fixed plate 81 fixed to the base 1, a cylinder 82 is installed on the second fixed plate 81, a piston rod 83 is installed at the output end of the cylinder 82, and a piston rod 83 is installed at one end of the piston rod 83 The movable plate 84 is installed on the base 1 through a sliding assembly. A limiting rod 87 that is movably inserted into the second fixed plate 81 is installed on one side of the movable plate 84. The other side of the movable plate 84 is fixedly connected to the second movable rod 6 or the first movable rod 4. When the starting cylinder 82 drives the piston rod 83 to extend or retract, it can drive the slider 85 to slide on the slide rail 86, and the limiting rod 87 is limited and slidably clamped on the second fixed plate 81. The extension and retraction of the piston rod 83 drives the movable plate 84 to move, thereby driving the second movable rod 6 and the first movable rod 4 to move horizontally; the sliding assembly includes a slide rail 86 fixed on the base 1 and a slider 85 fixed at the bottom of the movable plate 84. The slider 85 is slidably clamped on the slide rail 86. The sliding of the slider 85 on the slide rail 86 can effectively improve the stability of the piston rod 83 when driving the movable plate 84 to move.

[0033] When the double-die cold-drawing tooling for precision cold-drawn seamless steel pipe is used, one end of the pipe is fixed to one end of the second movable rod 6 through the locking component 7, and the other end is sleeved on the outer periphery of the die head 5 at one end of the first movable rod 4. The locking component 7 can be used to fix seamless steel pipes of different sizes. When cold-drawing seamless steel pipes of different sizes, there is no need to replace the corresponding molds, which improves the cold-drawing efficiency of the seamless steel pipe. Then, the second movable rod 6 and the first movable rod 4 are driven by the driving mechanism 8 to move the pipe and the first movable rod 4, and the die head 5 can be used to easily expand the diameter of the pipe, saving time and effort. The setting of the locking component 7 is convenient for the expansion of the seamless steel pipe. The pipes with the same diameter are clamped and fixed, and the equipment is simple to operate, saving time and effort. It does not require multiple workers to operate it. Only individual workers are required to fix the pipe on the second movable rod 6, and then start the cylinder 82 on the driving mechanism 8. In addition, the driving mechanism 8 of the utility model includes a second fixed plate 81, a cylinder 82, etc. When the cylinder 82 is started to drive the piston rod 83 to extend and retract, it can drive the slider 85 to slide on the slide rail 86, and the limit rod 87 is limited and slidably connected to the second fixed plate 81, which can effectively improve the stability of the piston rod 83 when driving the movable plate 84 to move, so that the movable plate 84 is subjected to stable force when pushing the pipe, and the diameter expansion effect of the steel pipe is effectively improved.

[0034] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-die cold-drawing tool for precision cold-drawn seamless steel pipes, comprising a base (1), characterized in that: A first fixing plate (2) is mounted on the base (1), and a limiting hole (3) for movably inserting a first movable rod (4) is provided on the first fixing plate (2); A die head (5) is fixedly mounted on one end of the first movable rod (4) for expanding the diameter of the steel pipe, and the other end is driven to move horizontally by a driving mechanism (8) mounted on one end of the base (1); A second movable rod (6) is provided on one side of the first fixed plate (2) for pushing the steel pipe, and the second movable rod (6) is driven to move horizontally by a driving mechanism (8) installed at the other end of the base (1); A locking assembly (7) is installed at the end of the second movable rod (6) for locking and fixing the steel pipe.

2. A double-die cold-drawing tool for precision cold-drawn seamless steel pipe according to claim 1, characterized in that: A controller (9) is installed on the base (1) for controlling the electrical components.

3. The double-die cold-drawing tooling for precision cold-drawn seamless steel pipe according to claim 1, characterized in that: The inner diameter of the limiting hole (3) is matched to the outer diameter of the pipeline, and the pipeline is movably clamped inside the limiting hole (3).

4. The double-die cold-drawing tooling for precision cold-drawn seamless steel pipe according to claim 1, characterized in that: The locking assembly (7) comprises a locking ring (71) fixed to one end of the second movable rod (6), and the locking ring (71) is threadedly connected to a plurality of locking bolts (72) distributed at equal intervals on its outer circumference.

5. The double-die cold-drawing tooling for precision cold-drawn seamless steel pipe according to claim 1, characterized in that: The driving mechanism (8) comprises a second fixed plate (81) fixed on the base (1), a cylinder (82) being mounted on the second fixed plate (81), a piston rod (83) being mounted on the output end of the cylinder (82), a movable plate (84) being mounted on one end of the piston rod (83), the movable plate (84) being mounted on the base (1) via a sliding assembly, a limiting rod (87) being mounted on one side of the movable plate (84) and being movably plugged into the inside of the second fixed plate (81), and the other side of the movable plate (84) being fixedly connected to the second movable rod (6) or the first movable rod (4).

6. A double-die cold-drawing tool for precision cold-drawn seamless steel pipe according to claim 5, characterized in that: The sliding assembly comprises a sliding rail (86) fixed on the base (1) and a sliding block (85) fixed on the bottom of the movable plate (84); the sliding block (85) is slidably engaged with the sliding rail (86).

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