A stainless steel seamless pipe anti-wrinkling cold drawing device

Abstract

The utility model relates to stainless steel pipe processing technical field especially is a kind of stainless steel seamless pipe anti-wrinkling cold-drawing processing device, including work bench, the both sides symmetry of work bench top are provided with hydraulic rod, one end of one side hydraulic rod is fixedly connected with push seat, one end of other side hydraulic rod is connected with the inner support clamping component for clamping stainless steel pipe, the middle part of work bench top is provided with lubricating component for smearing lubricating oil, one side of lubricating component is provided with cold-drawing die, the inner support clamping component includes the connecting seat for being connected with hydraulic rod, driving motor is fixedly connected with the center of one side of connecting seat away from hydraulic rod, the output of driving motor extends to the inside of connecting seat, and is connected with rotating disc, the both ends of one side of rotating disc away from driving motor are rotatably connected with connecting shaft, can make that pipe material stress is uniform, effectively avoided the problem that wrinkle is generated in the process of cold-drawing due to local excessive stress.

Description

Technical Field

[0001] This utility model relates to the field of stainless steel pipe processing technology, specifically to a device for anti-wrinkle cold drawing of stainless steel seamless pipes. Background Technology

[0002] Stainless steel pipes are widely used in various industries due to their superior performance. There are many processing methods for stainless steel pipes, among which cold drawing is an important component. Cold drawing is a material processing technology. For metal materials, cold drawing refers to drawing the material at room temperature in order to achieve a certain shape and mechanical properties. Compared with hot-formed products, cold-drawn products have the advantages of higher dimensional accuracy and better surface finish. However, the existing cold drawing equipment clamps the stainless steel pipe externally by clamping the pipe wall, which can easily cause stress concentration and wrinkles. In addition, if the lubricating oil is not applied evenly, local lubrication problems can also occur, leading to dragging and wrinkles. Utility Model Content

[0003] The purpose of this invention is to provide a device for anti-wrinkle cold drawing of stainless steel seamless tubes to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A stainless steel seamless tube anti-wrinkle cold drawing treatment device includes a workbench, on both sides of the top of the workbench are symmetrically arranged hydraulic rods, one end of one hydraulic rod is fixedly connected to a push seat, and one end of the other hydraulic rod is connected to an inner support clamping assembly for clamping the stainless steel tube. A lubrication assembly for applying lubricating oil is arranged in the middle of the top of the workbench, and a cold drawing mold is arranged on one side of the lubrication assembly. The internal support clamping assembly includes a connecting seat connected to a hydraulic rod. A drive motor is fixedly connected to the center of the connecting seat on the side away from the hydraulic rod. The output end of the drive motor extends into the interior of the connecting seat and is connected to a rotating disk. Both ends of the rotating disk on the side away from the drive motor are rotatably connected to connecting shafts. Support blocks pass through the upper and lower sides of the connecting seat.

[0005] Through the above technical solution, the two hydraulic rods apply tension and thrust to the pipe respectively using the push seat and the inner support clamping assembly, reducing the compressive stress generated by the steel pipe in the die hole due to the severe stretching in one direction, and fundamentally suppressing the formation of wrinkles.

[0006] As a preferred embodiment of this utility model, the surfaces of both support blocks are slidably connected to the inner wall of the connecting seat, and slots are provided on both sides of the inner cavity of the two support blocks, with buffer airbags fixedly connected inside the four slots.

[0007] As a preferred embodiment of this utility model, one end of each of the four buffer airbags is fixedly connected to the inner wall of the four slots, and the other end of each of the four buffer airbags is fixedly connected to a connecting rod, with the end of each of the four connecting rods away from the buffer airbags extending to the outside of the slots.

[0008] Through the above technical solution, the two support blocks internally support and clamp the inner wall of the stainless steel pipe, which can avoid the stress concentration problem caused by the traditional external clamping method and effectively reduce the risk of wrinkles. At the same time, the setting of the buffer airbag can provide a buffering effect when the support block contacts the inner wall of the stainless steel pipe, preventing excessive clamping force from damaging the pipe.

[0009] As a preferred embodiment of this utility model, movable plates are provided on both sides of the inner cavity of the connecting seat, and the side walls of the two movable plates are slidably connected to the outer wall of the connecting seat.

[0010] As a preferred embodiment of this utility model, the sides of the two movable plates that are far apart from each other are rotatably connected to the ends of the two connecting shafts that are far away from the rotating disk, and the two ends of the sides of the two movable plates that are far away from the connecting shafts are fixedly connected to the ends of the four connecting rods that are far away from the buffer airbag.

[0011] As a preferred embodiment of this utility model, the lubrication assembly includes a rectangular outer frame connected to the top surface of the workbench, a storage box fixedly connected to one side of the top of the rectangular outer frame, the storage box storing lubricating oil, and a pump fixedly connected to the other side of the top of the rectangular outer frame.

[0012] As a preferred embodiment of this utility model, the flange on the side of the extraction pump closest to the storage tank is connected to a connecting pipe, the end of the connecting pipe away from the extraction pump extends into the interior of the storage tank, the flange on the side of the extraction pump away from the storage tank is connected to a conveying pipe, and the end of the conveying pipe away from the extraction pump penetrates the top surface of the rectangular outer frame.

[0013] As a preferred embodiment of this utility model, an annular spraying component is provided on the inner side of the rectangular outer frame, and the end of the delivery pipe away from the extraction pump is fixedly connected to the top of the annular spraying component. An application sponge is provided on the inner side of the rectangular outer frame away from the annular spraying component, and the outer wall of the application sponge is fixedly connected to the inner wall of the rectangular outer frame.

[0014] The above technical solution allows for the uniform spraying of lubricating oil onto the outer wall of the pipe using an annular sprayer. Combined with a sponge, the lubricating oil can be further spread evenly, ensuring sufficient lubrication of the pipe surface during cold drawing. This prevents dragging and wrinkling caused by poor local lubrication, thus improving the quality and efficiency of the cold drawing process.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, the inner wall of the stainless steel pipe is internally supported and clamped by two support blocks, which can avoid the stress concentration problem caused by the traditional external clamping method and effectively reduce the risk of wrinkles. At the same time, the setting of the buffer airbag can provide a buffering effect when the support block contacts the inner wall of the stainless steel pipe, preventing excessive clamping force from damaging the pipe.

[0016] 2. In this utility model, the annular spraying device can evenly spray lubricating oil onto the outer wall of the pipe. With the help of the application sponge, the lubricating oil can be further evenly applied, ensuring sufficient lubrication on the surface of the pipe during the cold drawing process. This avoids dragging and wrinkling caused by poor local lubrication, thereby improving the quality and efficiency of the cold drawing process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the lubrication assembly of this utility model; Figure 3 This is a schematic diagram of the internal structure of the rectangular outer frame of this utility model; Figure 4 This is a cross-sectional structural diagram of the internal support clamping component of this utility model.

[0018] In the diagram: 1. Workbench; 2. Hydraulic rod; 3. Push seat; 4. Inner support clamping assembly; 5. Lubrication assembly; 6. Cold drawing die; 401. Connecting seat; 402. Drive motor; 403. Rotary disk; 404. Connecting shaft; 405. Moving plate; 406. Support block; 407. Slot; 408. Buffer airbag; 409. Connecting rod; 501. Rectangular frame; 502. Storage box; 503. Extraction pump; 504. Connecting pipe; 505. Delivery pipe; 506. Annular spraying component; 507. Coating sponge. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, and several embodiments of the utility model will be provided. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and complete.

[0021] For examples, please refer to Figure 1-4 This utility model provides a technical solution: A stainless steel seamless tube anti-wrinkle cold drawing treatment device includes a workbench 1. Hydraulic rods 2 are symmetrically arranged on both sides of the top of the workbench 1. One end of one hydraulic rod 2 is fixedly connected to a push seat 3, and one end of the other hydraulic rod 2 is connected to an inner support clamping assembly 4 for clamping the stainless steel tube. A lubrication assembly 5 for applying lubricating oil is arranged in the middle of the top of the workbench 1, and a cold drawing mold 6 is arranged on one side of the lubrication assembly 5. The internal support clamping assembly 4 includes a connecting seat 401 connected to the hydraulic rod 2. A drive motor 402 is fixedly connected to the center of the connecting seat 401 on the side away from the hydraulic rod 2. The output end of the drive motor 402 extends into the interior of the connecting seat 401 and is connected to a rotating disk 403. Both ends of the rotating disk 403 on the side away from the drive motor 402 are rotatably connected to a connecting shaft 404. Support blocks 406 pass through both the upper and lower sides of the connecting seat 401. The surfaces of the two support blocks 406 are slidably connected to the inner wall of the connecting seat 401. The two sides of the inner cavity of the two support blocks 406 are provided with slots 407. The interior of each of the four slots 407 is fixedly connected to a buffer airbag 408. One end of each of the four buffer airbags 408 is fixedly connected to the inner wall of the four slots 407. The other end of each of the four buffer airbags 408 is fixedly connected to a connecting rod 409. The end of each of the four connecting rods 409 away from the buffer airbag 408 extends to the outside of the slot 407. Movable plates 405 are provided on both sides of the inner cavity of the connecting seat 401. The side walls of the two movable plates 405 are slidably connected to the outer wall of the connecting seat 401. The side of the two movable plates 405 that is away from each other is rotatably connected to the end of the two connecting shafts 404 that is away from the rotating disk 403. The two ends of the side of the two movable plates 405 that are away from the connecting shafts 404 are fixedly connected to the end of the four connecting rods 409 that is away from the buffer airbag 408. The lubrication assembly 5 includes a rectangular outer frame 501 connected to the top surface of the workbench 1. A storage tank 502 is fixedly connected to one side of the top of the rectangular outer frame 501. The storage tank 502 stores lubricating oil. A pump 503 is fixedly connected to the other side of the top of the rectangular outer frame 501. A connecting pipe 504 is connected to the flange on the side of the pump 503 near the storage tank 502. The end of the connecting pipe 504 away from the pump 503 extends into the interior of the storage tank 502. A delivery pipe 505 is connected to the flange on the side of the pump 503 away from the storage tank 502. The end of the delivery pipe 505 away from the pump 503 passes through the top surface of the rectangular outer frame 501. An annular spraying element 506 is provided on the inner side of the rectangular outer frame 501. The end of the delivery pipe 505 away from the extraction pump 503 is fixedly connected to the top of the annular spraying element 506. An application sponge 507 is provided on the inner side of the rectangular outer frame 501 away from the annular spraying element 506. The outer wall of the application sponge 507 is fixedly connected to the inner wall of the rectangular outer frame 501.

[0022] Among them, the annular spraying component 506 sprays lubricating oil evenly on the outer wall of the pipe. When the pipe moves towards the cold drawing die 6 under the drive of the hydraulic rod 2, the coating sponge 507 applies lubricating oil to the surface of the pipe a second time to ensure that the lubricating oil is evenly distributed and to avoid dragging and wrinkling due to poor local lubrication.

[0023] In this embodiment, the push seat 3 and the inner support clamping assembly 4 apply pushing and pulling forces to the tube respectively, reducing the compressive stress generated by the steel tube in the die hole due to severe stretching in one direction, and suppressing the formation of wrinkles.

[0024] The working process of this utility model is as follows: During use, one end of the pipe is placed inside the push seat 3, and the other end is fitted onto the outside of the support block 406 of the inner support clamping assembly 4. Then, the drive motor 402 is started, and its output end drives the rotating disk 403 to rotate. This causes the connecting shafts 404 at both ends to push the moving plate 405 to slide outwards along the inner wall of the connecting seat 401. The moving plate 405 causes the support block 406 to expand outwards and make tight contact with the inner wall of the pipe, achieving internal support. The pipe passes through the rectangular outer frame 501 and the cold drawing die 6. The extraction pump 503 extracts lubricating oil from the storage tank 502 through the connecting pipe 504, and then delivers it through the conveying pipe 5... 05 is conveyed to the annular spraying component 506, which evenly sprays lubricating oil onto the outer wall of the pipe. When the pipe moves toward the cold drawing die 6 under the drive of the hydraulic rod 2, the coating sponge 507 applies lubricating oil to the surface of the pipe a second time to ensure that the lubricating oil is evenly distributed. Then, the hydraulic rods 2 on both sides work synchronously, pushing the seat 3 and the inner support clamping component 4 to apply pushing and pulling forces to the pipe respectively, so that the pipe passes through the cold drawing die 6 at a stable speed to complete the cold drawing process. During this process, the buffer airbag 408 can adjust the support force in real time according to the pressure change of the inner wall of the pipe to avoid excessive local stress that could cause the pipe to deform.

[0025] The hydraulic rod 2 and drive motor 402 used in this utility model are both existing known electrical devices, and both can be purchased and used directly on the market. Their structure, circuit and control principle are all existing known technologies. Therefore, the structure, circuit and control principle of the hydraulic rod 2 and drive motor 402 will not be described in detail here.

[0026] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art and are also general components, which are common knowledge in this field.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for anti-wrinkle cold drawing of stainless steel seamless tubes, comprising a workbench (1), characterized in that: Hydraulic rods (2) are symmetrically arranged on both sides of the top of the workbench (1). One end of one hydraulic rod (2) is fixedly connected to a push seat (3), and one end of the other hydraulic rod (2) is connected to an inner support clamping assembly (4) for clamping stainless steel pipes. A lubrication assembly (5) for applying lubricating oil is arranged in the middle of the top of the workbench (1), and a cold drawing mold (6) is arranged on one side of the lubrication assembly (5). The inner support clamping assembly (4) includes a connecting seat (401) connected to the hydraulic rod (2). A drive motor (402) is fixedly connected to the center of the connecting seat (401) on the side away from the hydraulic rod (2). The output end of the drive motor (402) extends into the interior of the connecting seat (401) and is connected to a rotating disk (403). Both ends of the rotating disk (403) on the side away from the drive motor (402) are rotatably connected to a connecting shaft (404). Support blocks (406) pass through the upper and lower sides of the connecting seat (401).

2. The anti-wrinkle cold drawing treatment device for stainless steel seamless tubes according to claim 1, characterized in that: The surfaces of the two support blocks (406) are slidably connected to the inner wall of the connecting seat (401). The two sides of the inner cavity of the two support blocks (406) are provided with slots (407), and the interiors of the four slots (407) are fixedly connected with buffer airbags (408).

3. The anti-wrinkle cold drawing treatment device for stainless steel seamless tubes according to claim 2, characterized in that: One end of each of the four buffer airbags (408) is fixedly connected to the inner wall of the four slots (407), and the other end of each of the four buffer airbags (408) is fixedly connected to a connecting rod (409). The end of each of the four connecting rods (409) away from the buffer airbag (408) extends to the outside of the slot (407).

4. The anti-wrinkle cold drawing treatment device for stainless steel seamless tubes according to claim 1, characterized in that: Movable plates (405) are provided on both sides of the inner cavity of the connecting seat (401), and the side walls of the two movable plates (405) are slidably connected to the outer wall of the connecting seat (401).

5. The anti-wrinkle cold drawing treatment device for stainless steel seamless tubes according to claim 4, characterized in that: The two movable plates (405) are rotatably connected to the ends of the two connecting shafts (404) away from the rotating disk (403) on their respective sides. The two ends of the movable plates (405) away from the connecting shafts (404) are fixedly connected to the ends of the four connecting rods (409) away from the buffer airbag (408).

6. The anti-wrinkle cold drawing treatment device for stainless steel seamless tubes according to claim 1, characterized in that: The lubrication assembly (5) includes a rectangular outer frame (501) connected to the top surface of the workbench (1). A storage tank (502) is fixedly connected to one side of the top of the rectangular outer frame (501). The storage tank (502) stores lubricating oil inside. A pump (503) is fixedly connected to the other side of the top of the rectangular outer frame (501).

7. The anti-wrinkle cold drawing treatment device for stainless steel seamless tubes according to claim 6, characterized in that: The extraction pump (503) has a flange connected to a connecting pipe (504) on the side near the storage tank (502). The end of the connecting pipe (504) away from the extraction pump (503) extends into the interior of the storage tank (502). The flange on the side of the extraction pump (503) away from the storage tank (502) has a delivery pipe (505) connected to it. The end of the delivery pipe (505) away from the extraction pump (503) passes through the top surface of the rectangular outer frame (501).

8. The anti-wrinkle cold drawing treatment device for stainless steel seamless tubes according to claim 7, characterized in that: An annular spraying element (506) is provided on the inner side of the rectangular outer frame (501). The end of the delivery pipe (505) away from the pump (503) is fixedly connected to the top of the annular spraying element (506). An applicating sponge (507) is provided on the inner side of the rectangular outer frame (501) away from the annular spraying element (506). The outer wall of the applicating sponge (507) is fixedly connected to the inner wall of the rectangular outer frame (501).

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