A high-cleanliness seamless stainless steel pipe cold-drawing device

Abstract

The utility model relates to the technical field of stainless steel pipe cold drawing, specifically is a kind of high clean seamless stainless steel pipe cold drawing device, including cold drawing rack, still including cold drawing die holder, tractor, feeding mechanism and push mechanism, cold drawing die holder is fixed on the surface of cold drawing rack, tractor is slidably connected on the slide rail of the surface of cold drawing rack by sliding seat, feeding mechanism is installed at the feeding of cold drawing rack, full feeding process linkage automation, reduce artificial dependence and cost, from the starting driving load belt straight of pull-down air cylinder, to overturn cover guide, guide plate limit, to push rod lift, steel pipe slides into conveying roller frame, entire process does not need manual operation, such as raw material handling, trajectory adjustment, positioning calibration, each structure is realized the automatic connection of mechanical linkage, both reduce the efficiency fluctuation and error brought by manual operation, reduce artificial cost, avoid the safety hazard that the steel pipe possibly appears of artificial contact stacking, such as bruise, scratch, give consideration to production efficiency and operation safety.

Description

Technical Field

[0001] This utility model relates to the field of stainless steel tube cold drawing technology, specifically to a high-purity seamless stainless steel tube cold drawing device. Background Technology

[0002] In the production and processing of high-purity seamless stainless steel pipes, cold drawing is the core process for improving the dimensional accuracy and surface quality of steel pipes. Its processing efficiency and finished product quality directly affect the application needs of downstream precision equipment manufacturing, food and medicine and other fields. However, the mainstream seamless stainless steel pipe cold drawing equipment in the industry still has problems such as high dependence on manual labor, large deviation of transport trajectory, insufficient positioning accuracy and prominent safety hazards in practical applications, which makes it difficult to meet the needs of large-scale and high-precision production.

[0003] Existing high-purity seamless stainless steel tube cold drawing equipment has the following shortcomings: 1. The current cold drawing equipment's feeding process relies heavily on manual operation. The steel pipes to be processed need to be manually moved to the bearing mechanism one by one. During the tilting and rolling of the steel pipes, the trajectory of the steel pipes needs to be manually adjusted in real time to prevent deviation. At the same time, before pushing, the steel pipes need to be manually positioned and calibrated to ensure that their axis is aligned with the cold drawing die base.

[0004] 2. Cold drawing requires extremely high coaxiality between the steel pipe and the cold drawing die. Existing equipment mostly relies on manual visual observation or simple measuring tools for calibration, which makes it difficult to accurately correct slight deviations in the steel pipe during transportation. This requires secondary cold drawing or scrapping. Secondary cold drawing not only increases energy consumption and processing time, but also leads to a decrease in the surface cleanliness of the steel pipe. Utility Model Content

[0005] The purpose of this invention is to provide a cold drawing device for high-purity seamless stainless steel tubes.

[0006] To achieve this objective, the present invention adopts the following technical solution: A high-cleanliness seamless stainless steel tube cold drawing device is provided, including a cold drawing frame, a cold drawing die holder, a traction machine, a feeding mechanism, and a pushing mechanism. The cold drawing die holder is fixed to the surface of the cold drawing frame. The traction machine is slidably connected to a slide rail on the surface of the cold drawing frame via a slide block. The feeding mechanism is installed at the feeding point of the cold drawing frame and includes a pull-down cylinder, a support belt, a guide wheel, a fixed wheel, a guide plate, and a guide plate. The pull-down cylinder is fixed to a support leg on the surface of the cold drawing frame. The guide wheel is fixed to the side of the cold drawing frame surface near the pull-down cylinder. The support belt is wrapped around the surface of the guide wheel, and the fixed wheel is fixed to the surface of the cold drawing frame. The surface is near the end of the carrying belt, and the end of the carrying belt is fixedly connected to the surface of the fixed wheel. The guide plate is fixed on the side of the surface of the cold drawing frame near the fixed wheel. The guide plate is set directly above the guide plate. The guide plate and the guide plate are provided with translation section and tilt section on opposite sides. The pushing mechanism is installed on the side of the surface of the cold drawing frame facing the cold drawing die. The pushing mechanism includes a pushing cylinder, a pushing plate and a conveying roller frame. The pushing cylinder is set on the side of the surface of the cold drawing frame facing the cold drawing die. The pushing plate is fixed at the output end of the pushing cylinder. Multiple sets of conveying roller frames are arranged equidistantly between the pushing plate and the cold drawing die.

[0007] Preferably, the feeding mechanism also includes a fixed seat and a pull lug. The fixed seat is fixed to the side of the support leg on the surface of the cold drawing machine frame. The cylinder end of the pull-down cylinder is fixedly connected to the fixed seat. The pull lug is fixed to the output end of the pull-down cylinder and slidably connected inside the fixed seat. The pull lug is also fixedly connected to the beginning of the carrying belt. When the pull-down cylinder is started, the carrying belt can be driven to slide along the surface of the guide wheel through the pull lug, thereby realizing the switching between the straightening and slackening actions of the carrying belt.

[0008] Preferably, one side of the flip cover is rotatably connected to the axle of the guide wheel via a rotating shaft. The receiving groove inside the flip cover fits against the outer surface of the carrying belt. When the carrying belt slides and straightens along the guide wheel, it can drive the flip cover to flip around the axle of the guide wheel. After flipping, the flip cover can block and guide the seamless stainless steel pipe that is tilted on the surface of the carrying belt, preventing the steel pipe from deviating from the preset trajectory during the tilting process.

[0009] Preferably, a fixed frame is fixed to the surface of the cold drawing machine frame, and the guide plate is fixedly connected to the fixed frame. The gap width between the guide plates is adapted to the outer diameter of the seamless stainless steel tube to be cold drawn. The surface of the guide plate is provided with mounting holes. A rotating shaft is rotatably connected to the mounting holes of the guide plate through a bearing. One end of the rotating shaft extends to the outside of the guide plate and is fixedly connected to a drive arm. A drive cylinder is hinged to the side of the cold drawing machine frame near the drive arm through a hinge seat. The output end of the drive cylinder is hinged to the end of the drive arm.

[0010] Preferably, the feeding mechanism further includes a swing rod, a hinge rod, and a push rod. The swing rod is fixed to the surface of the rotating shaft located inside the guide plate. One end of the hinge rod is hinged to the end of the swing rod away from the rotating shaft via a hinge. The other end of the hinge rod is hinged to the bottom of the push rod via a hinge. The top of the push rod is provided with an arc-shaped support groove. The arc of the arc-shaped support groove is adapted to the outer arc of the seamless stainless steel tube. A sliding frame adapted to the push rod is fixed on the surface of the guide plate. The push rod is slidably connected in the sliding frame of the guide plate. When the rotating shaft rotates, the push rod can be driven to slide up and down along the sliding frame through the swing rod and the hinge rod.

[0011] Preferably, a blocking block is fixed on the side of the guide plate near the push rod. The top of the blocking block is provided with an inclined guide surface, which is inclined towards the side of the push rod. When the seamless stainless steel pipe rolls between the guide plate and the guide plate to the blocking block, the blocking block can limit and block the steel pipe. When the push rod pushes the steel pipe upward, the inclined guide surface can help the steel pipe pass over the blocking block smoothly.

[0012] Preferably, a feeding slide is fixed on the side of the cold drawing frame near the blocking block. The surface of the feeding slide is provided with a downwardly inclined sliding surface. The lowest end of the sliding surface extends to the top of the conveyor roller frame. After the steel pipe passes the blocking block, it can slide along the sliding surface of the feeding slide onto the conveyor roller frame.

[0013] Preferably, the pushing mechanism further includes a support frame, a pushing frame, and a positioning roller frame. The support frame is fixed on the side of the cold drawing machine frame facing the cold drawing die, the pushing frame is fixed on the top of the support frame, the cylinder end of the pushing cylinder is fixed on the surface of the pushing frame, the conveying roller frame is fixed on the surface of the support frame, and the positioning roller frames are arranged on both sides of the conveying roller frame and fixed on the surface of the support frame. When the steel pipe slides onto the conveying roller frame, the positioning rollers on both sides can center and correct the steel pipe to ensure that the axis of the steel pipe is aligned with the central axis of the cold drawing die, thereby improving the cold drawing processing accuracy.

[0014] The beneficial effects of this utility model are: 1. This utility model discloses a high-purity seamless stainless steel tube cold drawing device. The entire feeding process is fully automated, reducing reliance on manual labor and costs. From the start of the pull-down cylinder to straighten the carrying belt, to the flipping cover guiding and the guide plate limiting, and then to the top push rod lifting and the steel tube sliding into the conveyor roller frame, the entire process does not require manual intervention in raw material handling, trajectory adjustment, positioning calibration and other operations. The various structures are automatically connected through mechanical linkage, which not only reduces the efficiency fluctuations and errors caused by manual operation, but also reduces labor costs. At the same time, it avoids the safety hazards such as crushing and scratching that may occur when manual contact with stacked steel tubes, thus balancing production efficiency and operational safety.

[0015] 2. This utility model discloses a high-purity seamless stainless steel pipe cold drawing device. The multi-structure collaborative design avoids deviation of the steel pipe during transport, ensuring accurate trajectory. When the carrying belt is taut and sliding, it synchronously drives the flipping cover to flip around the guide wheel. After flipping, the flipping cover fits the carrying belt through the internal receiving groove, forming a dedicated shielding and guiding structure. This prevents the steel pipe from deviating to both sides when tilted. The combination design of the guide plate and the guide plate's translation section plus tilting section allows the tilted steel pipe to slide smoothly into the gap along the tilting section, while maintaining straight rolling through the limiting of the translation section. The dual structure works together to achieve a seamless connection between the tilting and directional rolling of the steel pipe, solving the pain point of steel pipes easily deviating from the trajectory and requiring manual adjustment in traditional feeding.

[0016] 3. This utility model provides a high-purity seamless stainless steel pipe cold drawing device with full mechanical automation, reducing reliance on manual labor and safety hazards. From the centering and correction of the positioning roller frame and the pushing cylinder to the clamping and traction of the traction machine and the release of the processed steel pipe, the entire pushing and cold drawing process does not require manual intervention in alignment, clamping, traction monitoring, etc. It achieves fully automated operation through mechanical structure linkage, which reduces efficiency fluctuations and human errors caused by manual operation, reduces labor costs, and avoids manual contact with the steel pipe during high-pressure pushing and high-speed traction, avoiding safety risks such as steel pipe slippage and injury, and accidental injury from mechanical parts, thus balancing production efficiency, product quality, and operational safety.

[0017] 4. This utility model provides a high-purity seamless stainless steel tube cold drawing device with precise positioning and correction, ensuring uniformity of processing benchmarks from the source. The positioning rollers on both sides of the conveyor roller frame can actively center and correct the incoming steel tube through the limiting action of the positioning rollers. It can accurately correct slight deviations that may occur in the early transfer of the steel tube, ensuring that the axis of the steel tube is completely aligned with the central axis of the cold drawing die. This avoids uneven extrusion force in the die hole during subsequent cold drawing due to axis misalignment. It provides core guarantee for the dimensional accuracy and wall thickness uniformity of the steel tube from the processing benchmark stage, solving the pain points of low efficiency and large error of traditional manual alignment, and reducing the defect rate caused by benchmark deviation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the cold drawing frame and feeding mechanism of this utility model; Figure 3 This is a schematic diagram of the structure of the cold drawing frame and the bearing belt of this utility model; Figure 4 This is a schematic diagram of the guide plate and push rod of this utility model; Figure 5This is a schematic diagram of the guide plate and unloading carriage of this utility model; Figure 6 This is a schematic diagram of the structure of the support frame and conveyor roller frame of this utility model; In the diagram: 1. Cold drawing frame; 2. Cold drawing die holder; 3. Traction machine; 4. Feeding mechanism; 5. Fixed seat; 6. Pull lug; 7. Pull-down cylinder; 8. Carrying belt; 9. Guide wheel; 10. Fixed wheel; 11. Tilting cover; 12. Fixed frame; 13. Guide plate; 14. Guide plate; 15. Rotating shaft; 16. Swing rod; 17. Hinge rod; 18. Push rod; 19. Blocking block; 20. Drive arm; 21. Drive cylinder; 22. Unloading slide; 23. Pushing mechanism; 24. Support frame; 25. Pushing frame; 26. Pushing cylinder; 27. Pushing plate; 28. Conveying roller frame; 29. ​​Positioning roller frame. Detailed Implementation

[0020] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product.

[0022] Reference Figures 1 to 6The device for cold drawing high-purity seamless stainless steel tubes includes a cold drawing frame 1, a cold drawing die base 2, a traction machine 3, a feeding mechanism 4, and a pushing mechanism 23. The cold drawing die base 2 is fixed to the surface of the cold drawing frame 1. The traction machine 3 is slidably connected to a slide rail on the surface of the cold drawing frame 1 via a slide block. The feeding mechanism 4 is installed at the feeding point of the cold drawing frame 1. The feeding mechanism 4 includes a pull-down cylinder 7, a support belt 8, a guide wheel 9, a fixed wheel 10, a guide plate 13, and a guide plate 14. The pull-down cylinder 7 is fixed to the support leg on the surface of the cold drawing frame 1. The guide wheel 9 is fixed to the side of the surface of the cold drawing frame 1 near the pull-down cylinder 7. The support belt 8 is wrapped around the surface of the guide wheel 9. The fixed wheel 10 is fixed to the surface of the cold drawing frame 1 near the end of the support belt 8, and the end of the support belt 8 is fixedly connected to the surface of the fixed wheel 10. The guide plate 14 is fixed to the side of the surface of the cold drawing frame 1 near the fixed wheel 10. The guide plate 13 is positioned directly above the guide plate 14. Both the guide plate 13 and the guide plate 14 are provided with translation section and tilt section on opposite sides. The pushing mechanism 23 is installed on the side of the surface of the cold drawing frame 1 facing the cold drawing die 2. The pushing mechanism 23 includes a pushing cylinder 26, a pushing plate 27 and a conveying roller frame 28. The pushing cylinder 26 is set on the side of the surface of the cold drawing frame 1 facing the cold drawing die 2. The pushing plate 27 is fixed to the output end of the pushing cylinder 26. Multiple sets of conveying roller frames 28 are arranged at equal intervals between the pushing plate 27 and the cold drawing die 2. The device realizes the automated cold drawing process of seamless stainless steel tubes through the coordinated action of the feeding mechanism 4, the pushing mechanism 23, the cold drawing die 2 and the traction machine 3. In the initial state, the pull-down cylinder 7 is in the extended state. Its output end drives the carrying belt 8 to remain in a relaxed state through the pull lug 6. The carrying belt 8 is wrapped around the surface of the guide wheel 9 and the end is fixedly connected to the fixed wheel 10. At this time, the surface of the carrying belt 8 can stably place the seamless stainless steel tubes to be cold drawn. The number of stacks is adapted to the device capacity.

[0023] Reference Figures 1 to 3 The feeding mechanism 4 also includes a fixed seat 5 and a pull lug 6. The fixed seat 5 is fixed to the side of the support leg on the surface of the cold drawing frame 1. The cylinder end of the pull-down cylinder 7 is fixedly connected to the fixed seat 5. The pull lug 6 is fixed to the output end of the pull-down cylinder 7 and slidably connected inside the fixed seat 5. The pull lug 6 is also fixedly connected to the beginning end of the carrying belt 8. When the pull-down cylinder 7 is started, the carrying belt 8 can be driven to slide along the surface of the guide wheel 9 through the pull lug 6, realizing the switching between the straightening and slackening actions of the carrying belt 8. The fixed seat 5 in the feeding mechanism 4 is fixed to the side of the support leg of the cold drawing frame 1, providing stable support for the pull-down cylinder 7. The cylinder end of the pull-down cylinder 7 is fixed to the fixed seat 5. The pull lug 6 is slidably connected inside the fixed seat 5 to ensure the linearity of the subsequent pulling action. When the pull-down cylinder 7 is started, its output end retracts and drives the carrying belt 8 to slide along the surface of the guide wheel 9 through the pull lug 6. Since the end of the carrying belt 8 is fixed on the fixed wheel 10, the carrying belt 8 gradually straightens during the sliding process, and the seamless stainless steel pipes stacked on the surface lose support and begin to tilt.

[0024] Reference Figure 3 One side of the flip cover 11 is rotatably connected to the axle of the guide wheel 9 via a rotating shaft. The receiving groove inside the flip cover 11 is in contact with the outer surface of the carrying belt 8. When the carrying belt 8 slides and straightens along the guide wheel 9, it can drive the flip cover 11 to flip around the axle of the guide wheel 9. After flipping, the flip cover 11 can block and guide the seamless stainless steel pipe that is tilted on the surface of the carrying belt 8, preventing the steel pipe from deviating from the preset trajectory during the tilting process. The flip cover 11, which is connected to the axle of the guide wheel 9 via a rotating shaft, has its internal receiving groove in contact with the outer surface of the carrying belt 8. When the carrying belt 8 is straightened and slides, it will drive the flip cover 11 to flip around the axle of the guide wheel 9. After flipping, the flip cover 11 forms a blocking and guiding structure to prevent the steel pipe from deviating from the preset trajectory when tilting, ensuring that the steel pipe moves into the gap between the guide plate 13 and the guide plate 14.

[0025] Reference Figures 1 to 4 A fixed frame 12 is fixed to the surface of the cold drawing frame 1, and a guide plate 13 is fixedly connected to the fixed frame 12. The gap width between the guide plate 14 and the guide plate 13 is adapted to the outer diameter of the seamless stainless steel tube to be cold drawn. A mounting hole is opened on the surface of the guide plate 14, and a rotating shaft 15 is rotatably connected to the mounting hole of the guide plate 14 through a bearing. One end of the rotating shaft 15 extends to the outside of the guide plate 14 and is fixedly connected to a drive arm 20. A drive cylinder 21 is hinged to the side of the surface of the cold drawing frame 1 near the drive arm 20 through a hinge seat. The output end of the drive cylinder 21 is hinged to the end of the drive arm 20. The fixed frame 12 fixed to the surface of the cold drawing frame 1 provides fixed support for the guide plate 13. The guide plate 13 is located on the guide plate. Above 14, both sides are provided with a translation section and an inclined section, and the gap width is adapted to the outer diameter of the steel pipe to be cold drawn. After the tilted steel pipe slides into the gap along the inclined section, it keeps rolling in a straight line under the limit of the translation section. The steel pipe continues to roll along the gap between the guide plate 13 and the guide plate 14, and finally moves to the blocking block 19 on the surface of the guide plate 14 near the push rod 18. The inclined guide surface at the top of the blocking block 19 forms a limiting block on the steel pipe, so that the steel pipe temporarily stops at the processing position above the push rod 18. The drive cylinder 21, which is hinged to the surface of the cold drawing frame 1 by the hinge seat, is started. Its output end extends and pushes the drive arm 20 to rotate around the rotating shaft 15, thereby driving the rotating shaft 15 to rotate synchronously in the mounting hole of the guide plate 14.

[0026] Reference Figure 4The feeding mechanism 4 also includes a swing rod 16, a hinge rod 17, and a push rod 18. The swing rod 16 is fixed to the surface of the rotating shaft 15 located inside the guide plate 14. One end of the hinge rod 17 is hinged to the end of the swing rod 16 away from the rotating shaft 15 via a hinge, and the other end of the hinge rod 17 is hinged to the bottom of the push rod 18 via a hinge. The top of the push rod 18 is provided with an arc-shaped support groove, the curvature of which matches the outer curvature of the seamless stainless steel tube. The surface of the guide plate 14 is fixed with a part that matches the push rod 18. The sliding frame and the push rod 18 are slidably connected in the sliding frame of the guide plate 14. When the rotating shaft 15 rotates, the push rod 18 can be driven to slide up and down along the sliding frame through the swing rod 16 and the hinge rod 17. The swing rod 16, which is fixed on the inner surface of the rotating shaft 15, rotates with the rotating shaft 15 and drives the hinge rod 17 to move through the hinge. The other end of the hinge rod 17 is hinged to the bottom of the push rod 18, and the push rod 18 is slidably connected in the sliding frame on the surface of the guide plate 14. Finally, the hinge rod 17 pushes the push rod 18 to slide upward along the sliding frame.

[0027] Reference Figure 5 A blocking block 19 is fixed on the side of the guide plate 14 near the push rod 18. The top of the blocking block 19 is provided with an inclined guide surface, which is inclined towards the side of the push rod 18. When the seamless stainless steel pipe rolls between the guide plate 13 and the guide plate 14 to the blocking block 19, the blocking block 19 can limit and block the steel pipe. When the push rod 18 pushes the steel pipe upward, the inclined guide surface can assist the steel pipe to pass the blocking block 19 smoothly. The arc-shaped support groove at the top of the push rod 18 supports the steel pipe and moves upward synchronously with the push rod 18. When the height of the steel pipe exceeds the blocking block 19, with the assistance of the inclined guide surface of the blocking block 19, the steel pipe breaks away from the block and rolls to one side.

[0028] Reference Figures 4 to 5 A feeding slide 22 is fixed on the side of the cold drawing frame 1 near the blocking block 19. The surface of the feeding slide 22 is provided with a downwardly inclined sliding surface. The lowest end of the sliding surface extends to the top of the conveyor roller frame 28. After the steel pipe passes over the blocking block 19, it can slide along the sliding surface of the feeding slide 22 onto the conveyor roller frame 28. The feeding slide 22 fixed on the side of the cold drawing frame 1 near the blocking block 19 has a downwardly inclined sliding surface on its surface. The lowest end of the sliding surface extends to the top of the conveyor roller frame 28. The steel pipe that has broken away from the blocking block slides naturally along the sliding surface and finally falls smoothly onto the surface of the conveyor roller frame 28.

[0029] Reference Figure 1 , Figure 6The pushing mechanism 23 also includes a support frame 24, a pushing frame 25, and a positioning roller frame 29. The support frame 24 is fixed on the surface of the cold drawing machine frame 1 on the side facing the cold drawing die base 2. The pushing frame 25 is fixed on the top of the support frame 24. The cylinder end of the pushing cylinder 26 is fixed on the surface of the pushing frame 25. The conveying roller frame 28 is fixed on the surface of the support frame 24. The positioning roller frames 29 are arranged on both sides of the conveying roller frame 28 and fixed on the surface of the support frame 24. When the steel pipe slides onto the conveying roller frame 28, the positioning rollers on both sides can center and correct the steel pipe to ensure that the axis of the steel pipe is aligned with the central axis of the cold drawing die base 2, thereby improving the cold drawing processing accuracy. The positioning roller frames 29 on both sides of the conveying roller frame 28 center and correct the steel pipe. Through the limiting action of the positioning rollers, the axis of the steel pipe is ensured to be aligned with the center of the cold drawing die base 2. With precise alignment of the axis, positional assurance is provided for subsequent pushing and cold drawing processing. The pushing cylinder 26 in the pushing mechanism 23 is activated, and its output end pushes the fixedly connected pushing plate 27 to move towards the cold drawing die 2. After the pushing plate 27 contacts one end of the steel pipe, it drives the steel pipe to move along the conveying roller frame 28 towards the cold drawing die 2 until one end of the steel pipe passes through the interior of the cold drawing die 2. After one end of the steel pipe passes through the cold drawing die 2, the traction machine 3 is activated. The traction machine 3 is slidably connected to the slide rail on the surface of the cold drawing machine frame 1 through the slide block. The traction machine 3 clamps the end of the steel pipe that passes through and slides along the slide rail away from the cold drawing die 2. Through the traction force, the entire steel pipe is driven through the die hole of the cold drawing die 2. Under the squeezing action of the die hole, the cold drawing processing of the steel pipe is completed. The processed steel pipe is detached from one side of the traction machine 3, completing the entire cold drawing process.

[0030] The initial material storage is stable and highly adaptable. In the initial state, the pull-down cylinder 7 extends and drives the bearing belt 8 to remain relaxed. With the guide wheel 9 winding around and the fixed wheel 10 fixing it, the surface of the bearing belt 8 can stably support the stacked steel pipes. The number of stacked pipes can be flexibly adjusted according to the capacity of the device. There is no need to frequently start and stop to replenish raw materials. This not only increases the amount of material stored at one time and reduces the frequency of feeding, but also adapts to the raw material supply needs of different production scales, avoiding the problems of fixed capacity and poor adaptability of traditional fixed material storage structures.

[0031] The blocking block 19 on the surface of the guide plate 14 can precisely limit the steel pipe that rolls to this point through the top inclined guide surface, ensuring that the steel pipe stops exactly at the processing position above the push rod 18, without premature rolling or position deviation. At the same time, the inclined guide surface can also assist the steel pipe to get off the block later, without the need to add an additional disengagement structure, realizing the integration of positioning and disengagement functions, which not only improves the positioning accuracy of the processing position, but also simplifies the structural design and reduces the risk of equipment failure.

[0032] The steel pipe is lifted and transported smoothly, reducing product damage. The drive cylinder 21, through the linkage of the drive arm 20, rotating shaft 15, swing rod 16, and hinge rod 17, drives the push rod 18 to rise steadily along the sliding frame of the guide plate 14. The arc-shaped support groove at the top of the push rod 18 is adapted to the outer contour of the steel pipe, which can fully fit the surface of the steel pipe and evenly lift it, avoiding the steel pipe shaking and bumping during the lifting process. After it is freed from the obstruction, the steel pipe slides naturally along the inclined sliding surface of the unloading slide 22. The lowest end of the sliding surface extends to the top of the conveyor roller frame 28, allowing the steel pipe to fall smoothly onto the conveyor roller frame 28 without any hard impact. This greatly reduces scratches, deformation and other damage to the surface of the steel pipe, ensuring the initial quality of the steel pipe to be cold-drawn.

[0033] The pushing action is stable and controllable, avoiding damage and jamming during the steel pipe pushing process. The structure of the pushing cylinder 26 directly driving the pushing plate 27 has a stable cylinder output force and controllable stroke, which can drive the pushing plate 27 to move at a uniform speed towards the cold drawing die 2. At the same time, the pushing plate 27 is in close contact with one end face of the steel pipe, which can evenly transmit the pushing force to the steel pipe, avoiding the steel pipe from deviating or rotating due to local stress. With the support and guidance of the conveying roller frame 28, it is ensured that the steel pipe moves smoothly towards the cold drawing die 2 in the preset direction. There will be no pushing jamming or stagnation, and it can also avoid the steel pipe colliding with the pushing plate 27 and the conveying roller frame 28 to avoid scratches, thus ensuring the surface quality of the steel pipe to be processed.

Claims

1. A cold drawing device for high-purity seamless stainless steel tubes, comprising a cold drawing frame (1), characterized in that: It also includes a cold drawing die base (2), a traction machine (3), a feeding mechanism (4), and a pushing mechanism (23). The cold drawing die base (2) is fixed on the surface of the cold drawing frame (1). The traction machine (3) is slidably connected to the slide rail on the surface of the cold drawing frame (1) through a slide block. The feeding mechanism (4) is installed at the feeding point of the cold drawing frame (1). The feeding mechanism (4) includes a pull-down cylinder (7), a carrying belt (8), a guide wheel (9), a fixed wheel (10), a guide plate (13), and a guide plate (14). The pull-down cylinder (7) is fixed on the support leg on the surface of the cold drawing frame (1). The guide wheel (9) is fixed on the side of the surface of the cold drawing frame (1) near the pull-down cylinder (7). The carrying belt (8) is wrapped around the surface of the guide wheel (9). The fixed wheel (10) is fixed on the surface of the cold drawing frame (1) near the end of the carrying belt (8). The end of the belt (8) is fixedly connected to the surface of the fixed wheel (10). The guide plate (14) is fixed on the side of the surface of the cold drawing frame (1) close to the fixed wheel (10). The guide plate (13) is set directly above the guide plate (14). The guide plate (13) and the guide plate (14) are provided with a translation section and an inclination section on opposite sides. The pushing mechanism (23) is installed on the side of the surface of the cold drawing frame (1) facing the cold drawing die holder (2). The pushing mechanism (23) includes a pushing cylinder (26), a pushing plate (27) and a conveying roller frame (28). The pushing cylinder (26) is set on the side of the surface of the cold drawing frame (1) facing the cold drawing die holder (2). The pushing plate (27) is fixed at the output end of the pushing cylinder (26). Multiple sets of conveying roller frames (28) are arranged equidistantly between the pushing plate (27) and the cold drawing die holder (2).

2. The cold drawing device for high-purity seamless stainless steel tubes according to claim 1, characterized in that: The feeding mechanism (4) also includes a fixed seat (5) and a pull ear (6). The fixed seat (5) is fixed on the side of the support leg on the surface of the cold drawing frame (1). The cylinder end of the pull-down cylinder (7) is fixedly connected to the fixed seat (5). The pull ear (6) is fixed to the output end of the pull-down cylinder (7) and slidably connected inside the fixed seat (5). The pull ear (6) is fixedly connected to the first end of the carrying belt (8). When the pull-down cylinder (7) is started, the carrying belt (8) can be driven to slide along the surface of the guide wheel (9) through the pull ear (6), thereby realizing the switching of the straightening and slackening action of the carrying belt (8).

3. The high-purity seamless stainless steel tube cold drawing device according to claim 2, characterized in that: One side of the flip cover (11) is rotatably connected to the axle of the guide wheel (9) via a rotating shaft. The receiving groove inside the flip cover (11) fits against the outer surface of the carrying belt (8). When the carrying belt (8) slides and straightens along the guide wheel (9), it can drive the flip cover (11) to flip around the axle of the guide wheel (9). After flipping, the flip cover (11) can shield and guide the seamless stainless steel pipe that is tilted on the surface of the carrying belt (8), preventing the steel pipe from deviating from the preset trajectory during the tilting process.

4. The high-purity seamless stainless steel tube cold drawing device according to claim 1, characterized in that: A fixed frame (12) is fixed on the surface of the cold drawing frame (1), and a guide plate (13) is fixedly connected to the fixed frame (12). The gap width between the guide plate (14) and the guide plate (13) is adapted to the outer diameter of the seamless stainless steel tube to be cold drawn. An installation hole is opened on the surface of the guide plate (14). A rotating shaft (15) is rotatably connected to the installation hole of the guide plate (14) through a bearing. One end of the rotating shaft (15) extends to the outside of the guide plate (14) and is fixedly connected to a drive arm (20). A drive cylinder (21) is hinged to the side of the surface of the cold drawing frame (1) near the drive arm (20) through a hinge seat. The output end of the drive cylinder (21) is hinged to the end of the drive arm (20).

5. The high-purity seamless stainless steel tube cold drawing device according to claim 4, characterized in that: The feeding mechanism (4) also includes a swing rod (16), a hinge rod (17) and a push rod (18). The swing rod (16) is fixed on the surface of the rotating shaft (15) located inside the guide plate (14). One end of the hinge rod (17) is hinged to the end of the swing rod (16) away from the rotating shaft (15) by a hinge. The other end of the hinge rod (17) is hinged to the bottom of the push rod (18) by a hinge. The top of the push rod (18) is provided with an arc-shaped support groove. The arc of the arc-shaped support groove is adapted to the outer arc of the seamless stainless steel pipe. The surface of the guide plate (14) is fixed with a sliding frame adapted to the push rod (18). The push rod (18) is slidably connected in the sliding frame of the guide plate (14). When the rotating shaft (15) rotates, the push rod (18) can be driven to slide up and down along the sliding frame through the swing rod (16) and the hinge rod (17).

6. The cold drawing device for high-purity seamless stainless steel tubes according to claim 5, characterized in that: A blocking block (19) is fixed on the side of the guide plate (14) near the push rod (18). The top of the blocking block (19) is provided with an inclined guide surface, which is inclined towards the side of the push rod (18). When the seamless stainless steel pipe rolls between the guide plate (13) and the guide plate (14) to the blocking block (19), the blocking block (19) can limit and block the steel pipe. When the push rod (18) pushes the steel pipe upward, the inclined guide surface can help the steel pipe pass the blocking block (19) smoothly.

7. The cold drawing device for high-purity seamless stainless steel tubes according to claim 6, characterized in that: A feeding slide (22) is fixed on the side of the cold drawing frame (1) near the blocking block (19). The surface of the feeding slide (22) is provided with a downwardly inclined sliding surface. The lowest end of the sliding surface extends to the top of the conveying roller frame (28). After the steel pipe passes over the blocking block (19), it can slide along the sliding surface of the feeding slide (22) onto the conveying roller frame (28).

8. The cold drawing device for high-purity seamless stainless steel tubes according to claim 1, characterized in that: The pushing mechanism (23) also includes a support frame (24), a pushing frame (25), and a positioning roller frame (29). The support frame (24) is fixed on the side of the surface of the cold drawing machine frame (1) facing the cold drawing die (2). The pushing frame (25) is fixed on the top of the support frame (24). The cylinder end of the pushing cylinder (26) is fixed on the surface of the pushing frame (25). The conveying roller frame (28) is fixed on the surface of the support frame (24). The positioning roller frame (29) is set on both sides of the conveying roller frame (28). The positioning roller frame (29) is fixed on the surface of the support frame (24). When the steel pipe slides onto the conveying roller frame (28), the positioning rollers on both sides can center and correct the steel pipe to ensure that the steel pipe axis is aligned with the central axis of the cold drawing die (2) and improve the cold drawing processing accuracy.

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