A cold-drawing machine for stainless steel seamless steel pipe

Abstract

The utility model relates to cold-drawing machine technical field especially is a kind of cold-drawing machine for stainless steel seamless steel pipe processing, including cold-drawing seat, the upper end of cold-drawing seat is fixedly connected with cold-drawing table one, cold-drawing table two, it is rotatably provided with mould disc between cold-drawing table one, cold-drawing table two, the surface of cold-drawing table one, cold-drawing table two is all set up positioning hole, the surface of cold-drawing seat is set up opening;The movable part of locking mechanism can be elastically slid up and down;The surface of mould disc is installed with multiple blocks, the surface of multiple blocks is all set up hole site, and the radius of hole site is not the same, and mould disc replacement hole site is convenient: when replacing hole site adapts different processing requirements, screwing thread rod one is removed to the rotation constraint of mould disc, manually rotates mould disc, when target hole site is aligned with positioning hole, locking mechanism realizes elastic positioning, at this time, mould disc shaft end hole site is automatically aligned with screw thread rod one, it is convenient to tighten again locking, easy operation.

Description

Technical Field

[0001] This utility model relates to the field of cold drawing machine technology, and in particular to a cold drawing machine for processing stainless steel seamless steel pipes. Background Technology

[0002] As a core piece of equipment in the seamless steel pipe production process, the cold drawing machine plays an indispensable role. Its working principle involves using a powerful external traction system to smoothly and continuously guide the pre-treated steel pipe through a fixed mold. During this process, the steel pipe undergoes plastic deformation under the combined action of the external force and the mold, thereby achieving effective reduction in pipe diameter, precise adjustment of wall thickness, and a significant improvement in dimensional accuracy, providing a solid guarantee for the production of high-quality seamless steel pipes.

[0003] For example, the utility model patent CN220426329U discloses a seamless steel pipe cold drawing machine. "This seamless steel pipe cold drawing machine, through the setting of positioning blocks, positioning holes, fixing blocks, bolts, and nuts, uses bolts and nuts to connect the fixing blocks and positioning holes, thereby fixing the mold plate. Through the setting of the mold plate, drive shaft, and turntable, when changing the mold hole, there is no need to change the mold itself; simply rotate the turntable to switch the mold hole on the mold plate. This makes changing the mold hole simple and convenient, saving time and effort, and effectively improving the processing efficiency of seamless steel pipes." When it is necessary to change the mold hole, the user needs to rotate the mold plate to precisely align the positioning hole with the fixing block, and then use bolts to lock the position of the rotated mold plate. However, due to the large mass and strong inertia of the mold plate, the hole alignment operation is extremely inconvenient. The operator often needs to repeatedly rotate the mold plate for fine adjustments to ensure accurate alignment of the positioning hole and the fixing block. This not only increases the difficulty and time cost of operation but also places high demands on the operator's skills and patience. Furthermore, when maintenance of the die holes is required, the entire die plate must be disassembled, a cumbersome and time-consuming process that severely impacts equipment maintenance efficiency and production continuity. Even more seriously, when the die holes wear down and fail due to prolonged use, the current design necessitates replacing the entire die plate. This not only wastes significant resources but also substantially increases equipment maintenance costs. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing the following technical solution: a cold drawing machine for processing seamless stainless steel pipes, comprising a cold drawing base, a first cold drawing table and a second cold drawing table fixedly connected to the upper end of the cold drawing base, a mold plate rotatably disposed between the first and second cold drawing tables, positioning holes being formed on the surfaces of both the first and second cold drawing tables, an opening being formed on the surface of the cold drawing base, and a locking mechanism being fixedly disposed inside the opening, a threaded rod being threadedly connected to the upper end of the first cold drawing table, the smooth end of the threaded rod being inserted into the shaft end hole of the mold plate; the movable part of the locking mechanism can elastically slide up and down; multiple blocks are mounted on the surface of the mold plate, and holes of varying radii are formed on the surfaces of the multiple blocks.

[0005] As an improvement to the above technical solution, the mold plate includes a mold plate body, modules, threaded rod II, an annular body, and limiting holes. Multiple modules are slidably engaged on the outer circular surface of the mold plate body. Working holes are opened on the surface of each module. The modules are installed inside the slots of the mold plate body through threaded rod II. An annular body is fixedly provided at the shaft end of the mold plate body. Multiple limiting holes are opened on the outer circular surface of the annular body. The limiting holes are adapted to the smooth end of threaded rod I.

[0006] As an improvement to the above technical solution, the module includes a snap-fit ​​block, a mold hole, and an arc panel. Multiple snap-fit ​​blocks are slidably snapped onto the outer circular surface of the mold plate body. A mold hole is opened on the surface of the snap-fit ​​block, and an arc panel is fixedly connected to the upper end of the mold hole.

[0007] As an improvement to the above technical solution, multiple labels are affixed to the end face of the shaft end of the mold plate body, and multiple indicator blocks are fixedly connected to the outer circular surface of the shaft end of the mold plate body.

[0008] As an improvement to the above technical solution, the locking mechanism includes a fixed plate, a sliding rod, a connecting plate, a smooth rod, and a spring. The lower end of the cold-drawn seat is fixedly connected to the fixed plate. Two sliding rods are slidably arranged on the surface of the fixed plate. Two smooth rods are fixedly connected to the upper end of the sliding rods through the connecting plate. A spring is wound around the surface of the sliding rod. One end of the spring is fixedly connected to the connecting plate, and the other end of the spring is fixedly connected to the fixed plate.

[0009] The beneficial effects of this utility model are:

[0010] 1. Convenient hole position replacement for mold plate: When changing the hole position to adapt to different processing requirements, simply turn the threaded rod to release the rotation constraint on the mold plate. Manually rotate the mold plate. When the target hole position is aligned with the positioning hole, the locking mechanism achieves elastic positioning. At this time, the hole position at the shaft end of the mold plate automatically aligns with the threaded rod, making it easy to tighten and lock again. The operation is simple.

[0011] 2. Modular design simplifies maintenance: The mold plate adopts a modular integrated design. When maintaining or replacing specific holes, it is not necessary to disassemble the entire mold plate. Only specific block modules need to be disassembled or replaced, which simplifies the maintenance process and improves the maintainability and efficiency of the equipment. Attached Figure Description

[0012] Figure 1 This is a structural diagram of the present invention;

[0013] Figure 2 This is a structural diagram of the cold drawing table of this utility model;

[0014] Figure 3 This is a structural diagram of the mold plate of this utility model;

[0015] Figure 4 This is a structural diagram of the module of this utility model;

[0016] Figure 5 This is a structural diagram of the locking mechanism of this utility model;

[0017] Figure 6 This is a front view structural diagram of the locking mechanism of this utility model;

[0018] Figure 7 This utility model Figure 6 Enlarged structural diagram at point A;

[0019] Figure 8 The diagram shows the structure of threaded rod one and threaded rod two of this utility model.

[0020] Reference numerals: 1. Cold drawing seat; 2. Cold drawing table one; 3. Cold drawing table two; 4. Mold plate; 41. Mold plate body; 42. Module; 421. Snap-fit ​​block; 422. Mold hole; 423. Arc panel; 43. Threaded rod two; 44. Ring-shaped body; 45. Limiting hole; 46. Label; 47. Indicator block; 5. Positioning hole; 6. Opening; 7. Threaded rod one; 8. Locking mechanism; 81. Fixing plate; 82. Sliding rod; 83. Connecting plate; 84. Smooth rod; 85. Spring. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the following provides a more detailed description of the utility model. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the utility model.

[0022] Please see Figure 1-8This utility model provides a technical solution: a cold drawing machine for processing stainless steel seamless pipes, including a cold drawing base 1, a cold drawing table 2 and a cold drawing table 3 fixedly connected to the upper end of the cold drawing base 1, a mold plate 4 rotatably arranged between the cold drawing table 2 and the cold drawing table 3, positioning holes 5 are opened on the surface of the cold drawing table 2 and the cold drawing table 3, an opening 6 is opened on the surface of the cold drawing base 1, a locking mechanism 8 is fixedly arranged inside the opening 6, a threaded rod 7 is threadedly connected to the upper end of the cold drawing table 2, and the smooth end of the threaded rod 7 is inserted into the shaft end hole of the mold plate 4; the movable part of the locking mechanism 8 can slide up and down elastically; multiple blocks are installed on the surface of the mold plate 4, and holes are opened on the surface of the multiple blocks, and the radius of the holes is different.

[0023] In this implementation scheme, during actual operation, when it is necessary to change the hole position to adapt to different processing requirements, the user only needs to tighten the threaded rod 7, causing its smooth end to gradually disengage from the shaft end hole of the mold disk 4, thereby releasing the rotational constraint on the mold disk 4. Subsequently, the user can manually rotate the mold disk 4. During the rotation, the extended portion of the outer circular surface of the mold disk 4 will contact the movable portion of the locking mechanism 8 and exert a pushing force on it. After being subjected to the pushing force, the movable portion of the locking mechanism 8 will elastically expand and contract, dynamically and elastically engaging the extended portion of the mold disk 4.

[0024] When the target hole on the surface of the mold plate 4 is precisely aligned with the positioning hole 5 on the cold drawing table 2 and the cold drawing table 3, the locking mechanism 8 will use its elastic engaging end to firmly engage the extension of the mold plate 4, thereby achieving the elastic positioning effect of the mold plate 4. At this time, the shaft end hole of the mold plate 4 will also automatically align with the threaded rod 7, making it easy for the user to tighten the threaded rod 7 again and reliably lock the rotation state of the mold plate 4.

[0025] Furthermore, since the mold plate 4 adopts a modular integrated design, when it is necessary to maintain or replace specific holes on the surface of the mold plate 4, the operator does not need to disassemble the entire mold plate 4. Instead, the operator only needs to disassemble or replace the specific block that is in problem, which greatly simplifies the maintenance process and improves the maintainability and efficiency of the equipment.

[0026] like Figure 3 As shown, the mold plate 4 includes a mold plate body 41, modules 42, threaded rod 43, annular body 44, and limiting holes 45. Multiple modules 42 are slidably engaged on the outer circular surface of the mold plate body 41. Working holes are opened on the surface of the modules 42. The modules 42 are installed in the slot of the mold plate body 41 through the threaded rod 43. An annular body 44 is fixedly provided on the shaft end of the mold plate body 41. Multiple limiting holes 45 are opened on the outer circular surface of the annular body 44. The limiting holes 45 are adapted to the smooth end of the threaded rod 7.

[0027] In this embodiment, when the working hole position needs to be changed according to different processing requirements, the fixing of the mold plate 4 must first be released. The user turns the threaded rod 7 so that its smooth end disengages from the limiting hole 45 of the annular body 44. At this time, the mold plate body 41 loses the constraint of the threaded rod 7 and can rotate around its own axis. Next, the user manually rotates the mold plate body 41, which drives the multiple modules 42 that are slidably engaged on its outer circumference to rotate together. During the rotation, the annular body 44 at the shaft end of the mold plate body 41 will also rotate. As the mold plate 4 rotates, when the working hole on the target module 42 rotates to align with the processing position of the cold drawing machine, that is, when the working hole can meet the current steel pipe processing requirements, the rotation of the mold plate 4 is stopped. At this time, the threaded rod 7 is turned again so that its smooth end is reinserted into the corresponding limiting hole 45 on the annular body 44, thereby repositioning and fixing the mold plate body 41 to ensure that the mold plate 4 will not rotate during subsequent processing, thus ensuring the stability and accuracy of processing.

[0028] If, during processing, a working hole on a module 42 becomes worn, clogged, or requires other maintenance, it is not necessary to disassemble the entire mold plate 4. The operator simply uses a tool to loosen the threaded rod 43 installed between the module 42 and the slot on the mold plate body 41, and then slides the module 42 requiring maintenance or replacement out of the outer surface of the mold plate body 41. Next, the new or maintained module 42 is slidably snapped into the corresponding position on the outer surface of the mold plate body 41, and then the threaded rod 43 is used to securely install it in the slot, completing the replacement or maintenance of the module 42. This modular design greatly simplifies the maintenance process, reduces equipment downtime, and improves production efficiency.

[0029] like Figure 4 As shown, module 42 includes a snap-fit ​​block 421, a mold hole 422, and an arc panel 423. Multiple snap-fit ​​blocks 421 are slidably snapped onto the outer circular surface of the mold plate body 41. A mold hole 422 is opened on the surface of the snap-fit ​​block 421, and an arc panel 423 is fixedly connected to the upper end of the mold hole 422.

[0030] In this embodiment, the snap-fit ​​block 421 is slidably snapped into the slot on the outer circular surface of the mold plate body 41, so that the user can disassemble and install the snap-fit ​​block 421 using the threaded rod 43. The arc panel 423 can push the movable part of the locking mechanism 8, thereby facilitating the locking mechanism 8 to elastically engage the arc panel 423.

[0031] like Figure 3 As shown, multiple labels 46 are affixed to the end face of the shaft end of the mold plate body 41, and multiple indicator blocks 47 are fixedly connected to the outer circular surface of the shaft end of the mold plate body 41.

[0032] In this embodiment, multiple labels 46 are aligned with multiple die holes 422 respectively. The surface of the label 46 can be filled with the size of the corresponding die hole 422, which makes it easy for users to identify. This greatly facilitates users to quickly and accurately identify the specifications of different die holes 422 during operation, effectively improving production efficiency and operational accuracy.

[0033] like Figure 5 and Figure 7 As shown, the locking mechanism 8 includes a fixed plate 81, a sliding rod 82, a connecting plate 83, a smooth rod 84, and a spring 85. The lower end of the cold-drawn seat 1 is fixedly connected to the fixed plate 81. Two sliding rods 82 are slidably arranged on the surface of the fixed plate 81. Two smooth rods 84 are fixedly connected to the upper end of the sliding rods 82 through the connecting plate 83. A spring 85 is wound around the surface of the sliding rods 82. One end of the spring 85 is fixedly connected to the connecting plate 83, and the other end of the spring 85 is fixedly connected to the fixed plate 81.

[0034] In this embodiment, when the user needs to change the mold hole 422 for work, the user rotates the mold disk 4, which causes the arc panel 423 to rotate. When the arc panel 423 approaches and contacts the smooth rod 84, the arc panel 423 uses its arc end to push the smooth rod 84. When the arc panel 423 is between the two smooth rods 84, under the elastic force of the spring 85, the two smooth rods 84 elastically engage the arc panel 423. At this time, the shaft end hole of the mold disk 4 will also automatically align with the threaded rod 7, making it convenient for the user to tighten the threaded rod 7 again and reliably lock the rotation state of the mold disk 4.

[0035] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A cold drawing machine for processing seamless stainless steel pipes, comprising a cold drawing base (1), characterized in that: The upper end of the cold drawing base (1) is fixedly connected to a cold drawing table one (2) and a cold drawing table two (3). A mold plate (4) is rotatably arranged between the cold drawing table one (2) and the cold drawing table two (3). Positioning holes (5) are opened on the surfaces of the cold drawing table one (2) and the cold drawing table two (3). An opening (6) is opened on the surface of the cold drawing base (1). A locking mechanism (8) is fixedly arranged inside the opening (6). A threaded rod one (7) is threadedly connected to the upper end of the cold drawing table one (2). The smooth end of the threaded rod one (7) is inserted into the shaft end hole of the mold plate (4). The movable part of the locking mechanism (8) can slide up and down elastically; The surface of the mold plate (4) is equipped with multiple blocks, and the surfaces of the multiple blocks are provided with holes of different radii.

2. The cold drawing machine for processing stainless steel seamless pipes according to claim 1, characterized in that: The mold plate (4) includes a mold plate body (41), modules (42), threaded rod two (43), annular body (44), and limiting holes (45). Multiple modules (42) are slidably engaged on the outer circular surface of the mold plate body (41). The surface of each module (42) has a working hole. The module (42) is installed in the slot of the mold plate body (41) through the threaded rod two (43). An annular body (44) is fixedly provided at the shaft end of the mold plate body (41). Multiple limiting holes (45) are provided on the outer circular surface of the annular body (44). The limiting holes (45) are adapted to the smooth end of the threaded rod one (7).

3. The cold drawing machine for processing stainless steel seamless pipes according to claim 2, characterized in that: The module (42) includes a snap-fit ​​block (421), a mold hole (422), and an arc panel (423). Multiple snap-fit ​​blocks (421) are slidably snapped onto the outer circular surface of the mold plate body (41). A mold hole (422) is opened on the surface of the snap-fit ​​block (421), and an arc panel (423) is fixedly connected to the upper end of the mold hole (422).

4. The cold drawing machine for processing stainless steel seamless pipes according to claim 3, characterized in that: The shaft end face of the mold plate body (41) is affixed with multiple labels (46), and multiple indicator blocks (47) are fixedly connected to the outer circular surface of the shaft end of the mold plate body (41).

5. A cold drawing machine for processing stainless steel seamless pipes according to claim 4, characterized in that: The locking mechanism (8) includes a fixed plate (81), a sliding rod (82), a connecting plate (83), a smooth rod (84), and a spring (85). The lower end of the cold-drawn seat (1) is fixedly connected to the fixed plate (81). Two sliding rods (82) are slidably arranged on the surface of the fixed plate (81). Two smooth rods (84) are fixedly connected to the upper end of the sliding rods (82) through the connecting plate (83). A spring (85) is wound around the surface of the sliding rods (82). One end of the spring (85) is fixedly connected to the connecting plate (83), and the other end of the spring (85) is fixedly connected to the fixed plate (81).

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