Automatic feeding device for cold-drawing steel pipe

Abstract

The application relates to an automatic feeding device for steel pipe cold drawing, and belongs to the technical field of steel pipe cold drawing equipment, which comprises a rack, at least two groups of side plates are arranged on the rack, the adjacent side plates are fixedly connected through a plurality of cross beams, a storage mechanism is arranged at one end of the side plate, and a receiving mechanism is arranged at the other end; a pushing mechanism, a discharging mechanism and a guide mechanism are sequentially arranged on each side plate along the steel pipe conveying direction, the pushing mechanism is used for orderly and single pushing of the steel pipe in the storage mechanism to the discharging mechanism, the discharging mechanism is suitable for limiting and intercepting the steel pipe, and the single steel pipe is intermittently pushed to the guide mechanism, and the guide mechanism is suitable for sequentially guiding the steel pipe into each receiving groove. Through the sequential and cooperative actions of the storage mechanism, the turnover mechanism, the pushing mechanism, the discharging mechanism and the guide mechanism, the whole automation of steel pipe from batch storage, single separation, orderly conveying to multi-station accurate distribution is realized, the production efficiency is greatly improved, and the labor cost and the safety hidden danger are reduced.

Description

Technical Field

[0001] This application relates to the technical field of steel pipe cold drawing equipment, and in particular to an automatic feeding device for steel pipe cold drawing. Background Technology

[0002] Cold drawing is an important step in the processing of seamless steel pipes. It is mainly used to process a drawing head at one end of the steel pipe. The drawing head passes through the cold drawing die and is clamped and fixed by a drawing carriage. The drawing carriage drags the steel pipe backward to pass through the cold drawing die, thereby improving the dimensional accuracy and surface finish of the seamless steel pipe.

[0003] Feeding is the first step in cold-drawing steel pipes. It is usually done manually. In order to improve the efficiency of cold drawing, the industry will also cold draw multiple steel pipes at the same time. However, manual feeding cannot feed multiple stations at the same time, which will undoubtedly reduce the efficiency of cold drawing.

[0004] To improve automation, a feeding device has been proposed in related technologies. This device mainly consists of a baffle plate, a pusher plate, and a cylinder. The cylinder pushes the pusher plate upwards, lifting individual steel pipes and allowing them to pass over the baffle plate, thus enabling feeding one pipe at a time.

[0005] However, the above solution has obvious drawbacks in practical applications: The baffle only blocks the steel pipes stacked at the bottom of the pile. The upper steel pipes that are not blocked are prone to falling and rolling irregularly down the slope. These uncontrolled steel pipes may roll into the cold drawing station groove in advance or collide with other steel pipes, resulting in a chaotic feeding sequence.

[0006] In actual stacking, steel pipes are often difficult to maintain a precise "one-to-one" arrangement, meaning there may be gaps, misalignments, or mutual compression between them. When the cylinder drives the pusher plate to move upward, due to this irregular arrangement, the pusher plate is very likely to contact and push more than one steel pipe upward at the same time. Multiple steel pipes rushing into the cold drawing station at the same time will not only cause the entire line to jam, but also require the machine to be stopped and manually adjusted to place the steel pipes one by one into the cold drawing station slot.

[0007] Although the above-mentioned feeding device can achieve basic feeding functions, it is difficult to achieve stable and reliable single-piece feeding. Summary of the Invention

[0008] To address the above issues, this application provides an automatic feeding device for cold-drawn steel pipes.

[0009] The automatic feeding device for cold-drawn steel pipes provided in this application adopts the following technical solution: An automatic feeding device for cold-drawn steel pipes includes a frame and a control system. The frame has at least two sets of side plates, which are fixedly connected by several crossbeams. One end of each side plate has a storage mechanism, and the other end has a receiving mechanism. The upper surface of each side plate is inclined from the storage mechanism towards the receiving mechanism. The receiving mechanism includes several receiving grooves arranged side-by-side between adjacent side plates, and each receiving groove has guide rollers at both ends. Each side plate has a pushing mechanism sequentially arranged along the steel pipe conveying direction. The system includes a feeding mechanism and a guiding mechanism. The feeding mechanism is used to push the steel pipes in the storage mechanism to the feeding mechanism in an orderly and single manner. The feeding mechanism is adapted to limit and intercept the steel pipes, and intermittently move the single steel pipes to the guiding mechanism. The guiding mechanism is adapted to guide the steel pipes to each receiving slot in sequence. The storage mechanism, feeding mechanism, feeding mechanism and guiding mechanism work together to enable the steel pipes to be separated from the storage mechanism one by one, and finally distributed to each receiving slot one by one through the sequential operation of the feeding mechanism, feeding mechanism and guiding mechanism.

[0010] By adopting the above technical solutions, the various mechanisms work together to replace the traditional independent operation structure, effectively solving the problems of disconnected processes and inability to operate continuously in traditional equipment. At the same time, through the collaboration of multiple mechanisms, the stacked steel pipes are separated into individual pieces and the material is distributed one by one, eliminating the root causes of stacking, multiple discharges, and material jamming. This matches the intermittent processing rhythm of the cold drawing equipment, greatly improving the continuity and processing efficiency of the production line.

[0011] Preferably, each of the pushing mechanisms includes a pushing shaft, multiple pushing plates fixed on the shaft, and a first cylinder for driving the pushing plates. The pushing plates are located on one side of the side plate, and the ends of the pushing shaft are respectively mounted on the frame via bearing seats. The end of the pushing plate away from the pushing shaft is a free end, which is close to the material storage mechanism. The cylinder body of the first cylinder is hinged to the frame, and the piston rod of the first cylinder is rotatably connected to the free end of the pushing plate. A first photoelectric sensor is provided on the side plate, and the first photoelectric sensor is close to the free end of the pushing plate.

[0012] By adopting the above technical solution, when the pusher plate is in the initial state, it is higher than the side plate, thus blocking the steel pipe entering the side plate. When the first sensor detects the steel pipe, it provides a signal to the first cylinder, which drives the pusher plate to rotate downward so that the pusher plate is lower than the side plate. The steel pipe is no longer blocked and rolls down the inclined surface of the upper surface of the side plate to the unloading mechanism.

[0013] Preferably, each of the guiding mechanisms includes a guiding strip and a first drive motor. The guiding strip is arranged along the length direction of the side plate and slidably mounted on one side of the side plate. The lower side of the guiding strip is provided with meshing teeth along its length direction. The two ends of the meshing teeth are respectively meshed with a first driving gear and a driven gear. The driven gear is rotatably mounted on the side plate. A gear shaft is provided between adjacent side plates. The first driving gear is fixed on the gear shaft. The output shaft of the first drive motor is fixed to one end of the gear shaft. The upper side of the end of the guiding strip near the receiving groove is provided with a downwardly inclined slope.

[0014] By adopting the above technical solution, since multiple receiving troughs are arranged side by side, the guide bar moves along the length of the side plate under the action of gears and gear teeth, so that the inclined surface of the guide bar moves to the top of each receiving trough in sequence. The inclined surface allows the steel pipe to slide smoothly into the receiving trough, realizing the sequential distribution and conveying of multiple steel pipes and ensuring the orderly feeding.

[0015] Preferably, each of the feeding mechanisms includes a baffle block, a feeding plate, and a second cylinder. The baffle block is disposed above the side plate, and the second cylinder is vertically fixed on the crossbeam and located at the end of the side plate near the receiving groove. The feeding plate is rotatably mounted on one side of the side plate via a rotating shaft. The cylinder body of the second cylinder is hinged to the crossbeam, and the piston rod of the second cylinder is rotatably connected to one end of the feeding plate, with the other end being a free end near the baffle block. The upper side of the baffle block is provided with a guide surface inclined towards the receiving groove. A second photoelectric sensor is disposed on the side plate, and the second photoelectric sensor is located at the end of the baffle block near the pushing mechanism.

[0016] By adopting the above technical solution, the baffle block blocks the steel pipe. After the second photoelectric sensor detects that the steel pipe is in place, it provides a signal to the second cylinder. The second cylinder drives the feeding plate to rotate upward, pushing the steel pipe past the baffle block. The steel pipe moves along the guide surface of the baffle block to the top of the guide bar and then moves through the guide bar to the corresponding receiving groove.

[0017] Preferably, a slot is fixedly connected to the side of the side plate near the feed plate, and the free end of the feed plate is inserted into the slot.

[0018] By adopting the above technical solution, the free end of the blanking plate can be inserted into the slot in the initial state to support the blanking plate, which greatly improves the structural stability and positioning accuracy of the blanking plate.

[0019] Preferably, each of the side plates is provided with a moving mechanism for driving the corresponding stop block to slide along the length direction of the side plate; each moving mechanism includes a second drive motor, a first bevel gear and a second bevel gear, a drive shaft is rotatably arranged between the side plates, one end of the drive shaft is fixedly connected to the output shaft of the second drive motor, and each first bevel gear is fixed on the drive shaft; a slider is provided on the lower side of the stop block, and a lead screw arranged along the length direction of the side plate is threaded onto the slider, the second bevel gear is fixed on the lead screw, and the second bevel gear meshes with the first bevel gear.

[0020] By adopting the above technical solution, the bevel gear and lead screw slider transmission structure has a stable transmission ratio, high adjustment accuracy, and self-locking performance; by setting a second lead screw, a first bevel gear, and a second bevel gear, the stop block can be driven to move along the length direction of the side plate to adapt to steel pipes of different diameters, so that the steel pipe corresponds to the feeding plate, thereby improving the adaptability of the moving mechanism.

[0021] Preferably, the storage mechanism includes a storage bin with a discharge port located on one side below the bin. The bottom of the storage bin slopes towards the discharge port. Several support plates are staggered inside the storage bin. One end of each support plate is rotatably connected to the inner wall of the storage bin, and the other end is suspended. A support seat for supporting the suspended end of the support plate is provided on the inner wall of the storage bin. A first return spring is provided inside the support seat, with its upper end connected to the bottom of the lower end of the support seat and its lower end connected to the support seat. The distance between two adjacent support plates is greater than the diameter of one steel pipe but less than the diameter of two steel pipes. When the weight of the steel pipe supported above the support plate overcomes the spring force of the return spring, the suspended end of the support plate can rotate downwards, allowing the steel pipe in that layer to roll down to the lower layer. After the steel pipe rolls down, the support plate returns to the state supported by the support seat under the action of the return spring.

[0022] By adopting the above technical solution, and limiting the spacing between adjacent support plates to between the diameters of a single and double steel pipe, the simultaneous descent of multiple layers of steel pipes is physically restricted. This achieves single-pipe, layered discharge from the material storage source, completely resolving the core defects of traditional material storage structures, such as multi-pipe discharge and material jamming due to stacking. The steel pipes roll down layer by layer, buffering the impact of the fall and preventing hard impacts, effectively protecting the surface precision of the steel pipes and reducing the product defect rate. After the steel pipes have finished rolling down, the support plates automatically reset to provide support, achieving continuous cyclic material storage and discharge.

[0023] Preferably, a vertically sliding baffle is provided at the discharge port. A vertical guide rod is connected to the top of the baffle. An installation block located above the baffle is fixedly connected to the outer wall of the storage bin. The installation block has a through hole for the moving rod to pass through. A second return spring is sleeved on the guide rod, with its upper end abutting against the installation block and its lower end abutting against the top of the baffle, so that the baffle closes the discharge port in its natural state. A flipping mechanism is provided below the discharge port on the feeding side of the pushing mechanism to transfer a single steel pipe from the discharge port to the pushing mechanism. The flipping mechanism is provided in a one-to-one correspondence with the side plate. A linkage mechanism is provided between the flipping mechanism and the baffle to open the baffle when the flipping mechanism performs a specific action.

[0024] By adopting the above technical solutions, the material gate automatically closes the discharge port under natural conditions, preventing steel pipes from sliding down and discharging in a disorderly manner, ensuring no material leakage in the standby state. A tilting mechanism is installed to receive the discharged steel pipes, achieving smooth transfer and buffering the impact of rolling steel pipes. Simultaneously, a linkage mechanism is configured to synchronize the tilting mechanism and the material gate, opening the material gate only when the tilting mechanism is in position and ready to receive the pipes, eliminating problems such as empty material, incorrect material, and continuous discharge. This achieves precise matching between material storage, discharge, and transfer processes, significantly improving the overall linkage and automation level of the equipment.

[0025] Preferably, each set of the flipping mechanism includes a third drive motor, a flipping plate, a crank, and a connecting rod. The third drive motor is fixedly mounted on the frame, and its output shaft is horizontally arranged. One end of the crank is fixedly connected to the output shaft of the third drive motor. The flipping plate is used to support the steel pipe, and the middle part of its lower surface is hinged to one end of the connecting rod. The other end of the connecting rod is hinged to the end of the crank, thereby forming a crank-rocker mechanism. Support columns with axes parallel to the axis of the third drive motor are fixed at both ends of the flipping plate. When the flipping plate is in a horizontal position, bases are provided at both ends of the flipping plate, and support grooves for supporting the support columns are respectively opened on the upper ends of the two bases.

[0026] By adopting the above technical solution, the tilting mechanism uses a crank-rocker transmission structure, which is mature and stable, has a strong load-bearing capacity, and a fixed motion trajectory. It can accurately drive the tilting plate to swing back and forth, stably receiving and transferring single steel pipes, and preventing the steel pipes from falling or shifting during the transfer process. Support columns and base support grooves are configured at both ends of the tilting plate, which can provide stable support for the tilting plate during horizontal operation, preventing the tilting plate from deforming under pressure or sagging, ensuring the steel pipe is received in a flat position, further improving the stability of steel pipe transfer, and preventing damage to the pipes from impacts.

[0027] Preferably, each set of the linkage mechanism includes a second driving gear and an incomplete gear. The second driving gear is coaxially fixed on the output shaft of the corresponding third drive motor. The incomplete gear is rotatably mounted on the frame. One part of the circumference of the incomplete gear has teeth, and the other part is a smooth cam surface. The teeth of the incomplete gear mesh with the second driving gear. The lower end of the stop gate is provided with a locking pin that contacts the convex wheel.

[0028] By adopting the above technical solution, the incomplete gear integration of gear teeth meshing and cam surface can achieve both transmission linkage and precise control of the opening and closing timing and stroke of the material gate through the cam structure formed between the cam surface and the locating pin. This enables fully automatic synchronous linkage of flipping and transfer, and opening and closing of the discharge port, with a high degree of uniformity in the rhythm of each process. It completely solves the problems of process disconnection, poor linkage, and high failure rate of traditional equipment, and significantly improves the automation level and operational stability of the equipment.

[0029] In summary, this application includes at least one of the following beneficial technical effects: 1. Through the sequential coordinated action of the storage mechanism, the flipping mechanism, the pushing mechanism, the unloading mechanism and the guiding mechanism, the entire process of steel pipes from batch storage, single-piece separation, orderly conveying to precise multi-station allocation is fully automated, which greatly improves production efficiency and reduces labor costs and safety hazards. 2. By setting up the pusher plate, the first cylinder, and the first photoelectric sensor, the pusher stroke and position can be precisely controlled, realizing the orderly single push of the steel pipe in the storage mechanism, avoiding the jamming problem caused by pushing multiple steel pipes at the same time, and the structure is compact and easy to maintain. 3. Through the sliding of the gear teeth, drive gear and driven gear at both ends of the guide bar, and in conjunction with the inclined plane guide, the steel pipe can be stably guided into the receiving trough, avoiding the steel pipe from deviating or getting stuck during the conveying process; 4. Through the setting of multi-layer support plates, flipping mechanism and linkage mechanism, it is possible to realize single-layer discharge of steel pipes. The flipping mechanism is linked with the material gate through the linkage mechanism. The material gate is opened only when the flipping mechanism is in place and the receiving conditions are met, eliminating the problems of empty material, wrong material and continuous material discharge, realizing precise matching of material storage, material discharge and transfer process, and greatly improving the overall linkage and automation of the equipment. Attached Figure Description

[0030] Figure 1 This is a schematic diagram illustrating the structure of the automatic feeding device for cold-drawn steel pipes in the embodiments of this application.

[0031] Figure 2 This is a structural schematic diagram illustrating the material storage mechanism in the embodiments of this application.

[0032] Figure 3 yes Figure 2The enlarged view of section A shows the connection relationship between the support plate, support base, and first reset spring.

[0033] Figure 4 yes Figure 2 The enlarged view of section B shows the connection relationship between the material stop, guide rod, and second reset spring.

[0034] Figure 5 This is a schematic diagram illustrating the connection relationship of the receiving mechanism in the embodiments of this application.

[0035] Figure 6 yes Figure 2 The enlarged view of section C is used to illustrate the structural schematic of the flipping mechanism.

[0036] Figure 7 yes Figure 5 The enlarged view of section D shows the connection relationship between the first driving gear and the driven gear.

[0037] Figure 8 yes Figure 5 The enlarged view of section E in the middle is used to illustrate the structural schematic diagram of the feeding mechanism.

[0038] Figure 9 yes Figure 5 The enlarged view of section F in the middle is used to illustrate the structural schematic diagram of the feeding mechanism.

[0039] Figure 10 yes Figure 1 The enlarged view of section G is used to illustrate the structural schematic diagram of the material guiding mechanism.

[0040] Figure 11 yes Figure 2 The enlarged view of section H in the middle is used to illustrate the structural schematic diagram of the moving mechanism.

[0041] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Side plate; 2. Storage mechanism; 21. Storage bin; 22. Support plate; 23. Support base; 24. First return spring; 25. Discharge port; 26. Material gate; 27. Mounting block; 28. Second return spring; 29. ​​Guide rod; 3. Receiving mechanism; 31. Receiving groove; 32. Guide roller; 4. Pushing mechanism; 41. Pushing shaft; 42. Pushing plate; 43. First cylinder; 44. First photoelectric sensor; 5. Guiding mechanism; 51. Guide bar; 511. Inclined surface; 512. Meshing teeth; 52. First drive motor; 53. First driving gear; 54. Driven gear 6. Gear; 7. Feeding mechanism; 8. Stop block; 9. Guide surface; 10. Feeding plate; 11. Second cylinder; 12. Second photoelectric sensor; 13. Slot; 14. Moving mechanism; 15. Second drive motor; 16. First bevel gear; 17. Second bevel gear; 18. Lead screw; 19. Slider; 10. Tilting mechanism; 11. Third drive motor; 12. Tilting plate; 13. Support column; 14. Crank; 15. Connecting rod; 16. Base; 17. Support groove; 18. Linkage mechanism; 19. Second drive gear; 10. Incomplete gear; 11. Gear tooth; 12. Cam surface; 13. Slot. Detailed Implementation

[0042] The following is in conjunction with the appendix Figure 1-11 This application will be described in further detail.

[0043] This application discloses an automatic feeding device for cold-drawn steel pipes, referring to... Figure 1 The system includes a frame 1 and a control system. At least two sets of side plates 11 are fixed in parallel on the frame 1. The number of side plates 11 can be increased according to the length of the steel pipe. The side plates 11 are connected and fixed by multiple parallel crossbeams. A storage mechanism 2 is provided at one end of the side plate 11, and a receiving mechanism 3 is provided at the other end. A pushing mechanism 4, a discharging mechanism 6, and a guiding mechanism 5 are arranged sequentially on each side plate 11 along the conveying direction of the steel pipe. The upper surface of the side plate 11 is inclined from the storage mechanism 2 towards the receiving mechanism 3, so that the pushing mechanism 4, discharging mechanism 6, and guiding mechanism 5 arranged on the side plate 11 are in a state of inclined orientation, and the steel pipe has a tendency to be conveyed forward with the aid of its own weight.

[0044] Reference Figure 2 , Figure 3The storage mechanism 2 includes a storage bin 21. A discharge port 25 is located on the lower side of the storage bin 21 near the unloading mechanism 6. The bottom of the storage bin 21 is inclined towards the discharge port 25 to facilitate the steel pipes rolling autonomously towards the discharge port 25. Multiple layers of support plates 22 are arranged vertically and vertically within the storage bin 21. One end of each support plate 22 is rotatably hinged to the inner wall of the storage bin 21, while the other end is suspended. A support seat 23 is fixed to the inner wall of the storage bin 21 corresponding to the suspended end of the support plate 22. A first return spring 24 is installed inside the support seat 23, with its two ends connected to the support seat 23 and the support plate 22 respectively, providing elastic support for the support plate 22. Simultaneously, the distance between two adjacent layers of support plates 22 is greater than the outer diameter of a single steel pipe but less than the sum of the outer diameters of two steel pipes, achieving physical limitation. In normal storage conditions, the support plate 22 horizontally supports the steel pipe under the action of the first reset spring 24. When the weight of a single layer of steel pipes stacked overcomes the spring force, the suspended end of the support plate 22 flips downward, and the single steel pipe of that layer rolls off. After the steel pipe is dropped, the load disappears, and the support plate 22 automatically lifts and resets under the reset action of the first reset spring 24 to continue supporting the upper layer of steel pipes, thus realizing the dropping of materials layer by layer and single pipe from the source.

[0045] Reference Figure 4 A baffle gate 26 is vertically slidably mounted at the discharge port 25 of the storage silo 21. A vertically arranged guide rod 29 is fixed at the top of the baffle gate 26. An installation block 27 is fixed on the outer wall of the storage silo 21. The guide rod 29 passes through the through hole of the installation block 27. A second return spring 28 is sleeved on the outside of the guide rod 29. The two ends of the second return spring 28 abut against the installation block 27 and the baffle gate 26 respectively. In the natural state, the baffle gate 26 is pushed down by the elastic force of the second return spring 28 to close the discharge port 25 and prevent the steel pipe from sliding down and leaking material when the equipment is idle.

[0046] Reference Figure 5 , Figure 6 , Figure 7 A tilting mechanism 8 is installed below the discharge port 25 on the feeding side of the pushing mechanism 4. The tilting mechanism 8 is installed one-to-one with the side plate 11 to receive the steel pipes rolling off the discharge port 25 and smoothly transfer them to the pushing station. The tilting mechanism 8 includes a third drive motor 81, a crank 83, a connecting rod 84, and a tilting plate 82. The third drive motor 81 is horizontally fixed on the frame 1, and the output shaft is fixed to the crank 83. The crank 83 is hinged to the middle of the bottom surface of the tilting plate 82 through the connecting rod 84 to form a standard crank 83 rocker mechanism. Support columns 821 are fixed at both ends of the tilting plate 82. The axis of the support columns 821 is parallel to the axis of the third drive motor 81. A base 85 is installed at the corresponding position on the frame 1. A support groove 86 is opened at the upper end of the base 85. When the tilting plate 82 is horizontally loaded, the support columns 821 are inserted into the support groove 86 to form a stable support for the tilting plate 82, preventing the tilting plate 82 from being deformed by pressure and swaying, and ensuring that the steel pipe is received in a stable posture.

[0047] Reference Figure 7A linkage mechanism 9 is configured between the tilting mechanism 8 and the material gate 26 to achieve synchronous linkage between material discharge and transfer actions. The linkage mechanism 9 includes a second drive gear 91 and an incomplete gear 92. The second drive gear 91 is coaxially fixed on the output shaft of the third drive motor 81 and rotates synchronously with the crank 83. The incomplete gear 92 is rotatably mounted on the frame 11. One side of the incomplete gear 92 has teeth 921 that mesh with the second drive gear 91, and the other side has a smooth cam surface 922. A retaining post 93 is fixed at the bottom of the material gate 26, extending downward to contact the smooth cam surface 922 of the incomplete gear 92. When the equipment is working, the third drive motor 81 starts, driving the crank 83 rocker mechanism to swing the flipping plate 82 into position, ready to receive the steel pipe; on the other hand, the second drive gear 91 drives the incomplete gear 92 to rotate, and the clamping pin 93 and the cam surface 922 cooperate to lift the material gate 26 and open the discharge port 25. After a single material drop is completed, the motor continues to rotate, the incomplete gear 92 switches to the smooth cam surface 922, and the material gate 26 automatically falls back to close the discharge port 25 under the action of the second return spring 28, completing one linkage discharge cycle, realizing fully automatic linkage of flipping into position, opening the door to discharge, and resetting and closing the door.

[0048] Reference Figure 8 The pushing mechanism 4 includes a pushing shaft 41, multiple pushing plates 42, and a first cylinder 43. The pushing shaft 41 is horizontally mounted on the frame 1 at both ends via bearing seats, allowing it to rotate freely. Multiple pushing plates 42 are evenly fixed to the pushing shaft 41 and can swing synchronously with it, ensuring simultaneous pushing from both sides and uniform force distribution. The first cylinder 43 is arranged at an angle, with its tail hinged to the frame 1. The piston rod end of the first cylinder 43 is rotatably connected to the free end of the pushing plate 42 near the storage mechanism 2, forming a double-hinged swing drive structure. When the first cylinder 43 extends or retracts, it drives the pushing plate 42 to swing back and forth in an arc around the pushing shaft 41, thereby pushing the steel pipe transferred to the position by the flipping mechanism 8 to the unloading mechanism 6 in a single, orderly manner. A first photoelectric sensor 44 is mounted on the side plate 11 at the free end position corresponding to the pusher plate 42. The first photoelectric sensor 44 detects the presence or absence of steel pipes at the workstation in real time and feeds back the detection signal to the whole machine control system.

[0049] Reference Figure 9The feeding mechanism 6 includes a stop block 61, a feeding plate 62, and a second cylinder 63. The second cylinder 63 is vertically mounted and fixed on the crossbeam, and the cylinder body of the second cylinder 63 is hinged to the crossbeam. The feeding plate 62 is rotatably mounted on the side wall of the side plate 11 via a rotating shaft. The lower end of the piston rod of the second cylinder 63 is rotatably connected to one end of the feeding plate 62, and the other end of the feeding plate 62 is a free end near the stop block 61. A slot 65 is fixedly provided on the side wall of the side plate 11. When the feeding plate 62 completes the limiting and intercepting action, its free end is locked into the slot 65 to achieve mechanical locking and limiting, avoiding shaking, deviation, and swaying of the feeding plate 62 during operation, and greatly improving the feeding stability. A guide surface 611 inclined towards the receiving mechanism 3 is provided on the upper side of the stop block 61, which can correct and guide the posture of the steel pipe during the conveying process and prevent the steel pipe from tilting and getting stuck. A second photoelectric sensor 64 is installed on the side plate 11 on the feeding side of the baffle block 61 to detect the material status in real time and accurately feed back the signal of the steel pipe in place. The control system controls the extension and retraction of the second cylinder 63 according to the signal, drives the feeding plate 62 to swing back and forth, and intermittently releases a single steel pipe to realize the secondary screening of stacked steel pipes.

[0050] Reference Figure 10 , Figure 11 To accommodate the processing needs of steel pipes with different diameters and lengths, each side plate 11 is equipped with a moving mechanism 7 for sliding the drive stop block 61. The moving mechanism 7 includes a second drive motor 71, a drive shaft, a first bevel gear 72, a second bevel gear 73, a lead screw 74, and a slider 75. The second drive motor 71 is fixedly mounted on the frame 1, and the drive shaft is located between adjacent side plates 11. The end of the drive shaft is fixedly connected to the output shaft of the second drive motor 71, and each first bevel gear 72 is coaxially fixed on the drive shaft. The bottom of the stop block 61 is fixedly connected to the slider 75, and the slider 75 is threaded onto the lead screw 74. The lead screw 74 is arranged along the length of the side plate 11, and the second bevel gear 73 is fixed to the end of the lead screw 74. The second bevel gear 73 meshes with the corresponding first bevel gear 72. During operation, the second drive motor 71 drives the drive shaft to rotate, which in turn drives the first bevel gears 72 of each group to rotate synchronously. Through the meshing transmission of the bevel gears, the lead screw 74 is driven to rotate. Relying on the self-locking characteristic of the threaded transmission of the lead screw 74 and the slider 75, the slider 75 is driven to move the stop block 61 precisely along the side plate 11, flexibly adjusting the stop limit position. It is suitable for feeding multiple specifications of steel pipes and has extremely strong versatility.

[0051] Reference Figure 10The material guiding mechanism 5 undertakes the final guiding, distributing, and conveying function of the steel pipe, including a guide bar 51 and a first drive motor 52. The guide bar 51 is slidably mounted on the side wall of the side plate 11 and arranged along the length of the side plate 11. A meshing tooth 512 is provided on the lower side of the guide bar 51 along its length. A first driving gear 53 and a driven gear 54 are respectively meshed at both ends of the meshing tooth 512. The driven gear 54 is rotatably mounted on the side plate 11. A gear shaft is transversely mounted between adjacent side plates 11. The first driving gear 53 is fixed on the gear shaft, and the end of the gear shaft is fixedly connected to the output shaft of the first drive motor 52. During operation, the first drive motor 52 drives the gear shaft to rotate, driving the first driving gear 53 to mesh and transmit power, thereby driving the guide bar 51 to slide stably back and forth along the side plate 11. Meanwhile, the guide bar 51 has a downward inclined surface 511 at one end near the receiving trough 31. When the steel pipe falls, it can be buffered and decelerated by the inclined surface 511, and smoothly guided and accurately introduced into each receiving trough 31, thus completing the automatic distribution and conveying of the steel pipe and avoiding impact, collision, deviation and falling of the steel pipe.

[0052] Reference Figure 5 The receiving mechanism 3 includes multiple sets of receiving grooves 31 arranged side by side. All receiving grooves 31 are installed between adjacent side plates 11, and each receiving groove 31 is rotatably equipped with guide rollers 32 at both ends. The guide rollers 32 can rotate freely, which can convert the sliding friction between the steel pipe and the receiving groove 31 into rolling friction, greatly reducing the wear of the steel pipe during transportation. At the same time, they limit and guide the two ends of the steel pipe to prevent the steel pipe from deviating or getting stuck, ensuring that the steel pipe falls smoothly into the working position and matches the subsequent cold drawing process.

[0053] In this embodiment, the control system is a PLC control system. The first photoelectric sensor 44, the second sensor, the first cylinder 43, the second cylinder 63, the first drive motor 52, the second drive motor 71, and the third drive motor 81 are electrically connected to the control system.

[0054] The implementation principle of the automatic feeding device for cold-drawn steel pipes in this application embodiment is as follows: The steel pipes to be processed are stacked and stored inside the storage silo 21, with multi-layer elastic support plates 22 supporting the layered storage. After the equipment is started, the third drive motor 81 operates, and the second drive gear 91 drives the incomplete gear 92 to rotate. The cam surface 922 of the incomplete gear 92 contacts the locking post 93, pushing the locking post 93 and the baffle gate 26 to overcome the elastic force of the second return spring 28 and move upward, thereby opening the discharge port 25.

[0055] A steel pipe rolls out from the bottom of the storage bin 21 and falls onto the tilting plate 82, which is positioned at a horizontal receiving point. Subsequently, the incomplete gear 92 continues to rotate, and the material gate 26 closes under the action of a spring.

[0056] The third drive motor 81 continues to rotate, driving the tilting plate 82 to swing upwards via the crank 83 and connecting rod mechanism, moving it from the "receiving position" to the "unloading position". The steel pipe rolls down along the tilting plate 82 under the action of gravity and is smoothly transferred to the upper surface of the side plate 11, in the preparatory position in front of the pusher plate 42.

[0057] Subsequently, the third drive motor 81 reverses. The tilting plate 82 swings back towards the receiving position. After the first photoelectric sensor 44 detects that the steel pipe is in place, it controls the extension and retraction of the first cylinder 43, driving the pusher plate 42 to swing and push the steel pipe to the unloading mechanism 6. The second photoelectric sensor 64 detects that the steel pipe has reached the blocking position, and the signal triggers the second cylinder 63 to act. The piston rod of the second cylinder 63 retracts, pulling the unloading plate 62 to rotate around its axis. Its free end is lifted from the slot 65, thereby lifting the steel pipe over the blocking block 61 and moving it along the guide surface 611 of the blocking block 61 to the guide bar 51, completing the screening and release of a single steel pipe. After being released, the steel pipe is guided to the subsequent receiving slots 31 by the movement of the guide bar 51. All mechanisms of the machine work together to automatically complete the entire process of material storage, layered discharge, transfer, pushing, screening, and guiding distribution without manual intervention. It has high feeding accuracy, good stability, and strong versatility, perfectly adapting to the needs of precision continuous processing of cold-drawn steel pipes.

[0058] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic feeding device for cold-drawn steel pipes, comprising a frame (1), characterized in that: At least two sets of side plates (11) are provided on the frame (1). Adjacent side plates (11) are fixedly connected by several crossbeams. One end of the side plate (11) is provided with a storage mechanism (2) and the other end is provided with a receiving mechanism (3). The upper surface of the side plate (11) is inclined from the storage mechanism (2) to the receiving mechanism (3). The receiving mechanism (3) includes several receiving grooves (31) arranged side by side. The receiving grooves (31) are located between adjacent side plates (11), and each receiving groove (31) is provided with guide rollers (32) at both ends. Each of the side plates (11) is provided with a pushing mechanism (4), a discharging mechanism (6) and a guiding mechanism (5) in sequence along the steel pipe conveying direction. The pushing mechanism (4) is used to push the steel pipe in the storage mechanism (2) to the discharging mechanism (6) in an orderly and single manner. The discharging mechanism (6) is adapted to limit and intercept the steel pipe and intermittently move a single steel pipe to the guiding mechanism (5). The guiding mechanism (5) is adapted to guide the steel pipe to each receiving groove (31) in sequence. The storage mechanism (2), the pushing mechanism (4), the unloading mechanism (6) and the guiding mechanism (5) work together to separate the steel pipes one by one from the storage mechanism (2) and, through the sequential operation of the pushing mechanism (4), the unloading mechanism (6) and the guiding mechanism (5), finally distribute them one by one to each receiving trough (31).

2. The automatic feeding device for cold-drawn steel pipes according to claim 1, characterized in that: Each of the aforementioned pushing mechanisms (4) includes a pushing shaft (41), multiple pushing plates (42) fixed on the shaft, and a first cylinder (43) for driving the pushing plates (42). The pushing plates (42) are located on one side of the side plate (11), and the ends of the pushing shaft (41) are respectively mounted on the frame (1) through bearing seats. The end of the pusher plate (42) away from the pusher shaft (41) is a free end, which is close to the storage mechanism (2). The cylinder body of the first cylinder (43) is hinged to the frame (1), and the piston rod of the first cylinder (43) is rotatably connected to the free end of the pusher plate (42). A first photoelectric sensor (44) is provided on the side plate (11), and the first photoelectric sensor (44) is close to the free end of the pusher plate (42).

3. The automatic feeding device for cold-drawn steel pipes according to claim 1, characterized in that: Each of the material guiding mechanisms (5) includes a material guiding strip (51) and a first drive motor (52). The material guiding strip (51) is arranged along the length direction of the side plate (11) and is slidably installed on one side of the side plate (11). The guide bar (51) has meshing teeth (512) on its lower side along its length direction. The two ends of the meshing teeth (512) are respectively meshed with a first driving gear (53) and a driven gear (54). The driven gear (54) is rotatably mounted on the side plate (11). A gear shaft is provided between adjacent side plates (11). The first driving gear (53) is fixed on the gear shaft. The output shaft of the first drive motor (52) is fixed to one end of the gear shaft. The guide bar (51) has a downwardly sloping surface (511) on the upper side of one end near the receiving groove (31).

4. The automatic feeding device for cold-drawn steel pipes according to claim 1, characterized in that: Each of the feeding mechanisms (6) includes a baffle block (61), a feeding plate (62), and a second cylinder (63). The baffle block (61) is located above the side plate (11), and the second cylinder (63) is vertically fixed on the crossbeam and located at one end of the side plate (11) near the receiving groove (31). The feeding plate (62) is rotatably mounted on one side of the side plate (11) via a rotating shaft. The cylinder body of the second cylinder (63) is hinged to the crossbeam. The piston rod of the second cylinder (63) is rotatably connected to one end of the feeding plate (62), and the other end is a free end close to the stop block (61). The upper side of the baffle block (61) is provided with a guide surface (611) that is inclined toward the receiving groove (31); A second photoelectric sensor (64) is provided on the side plate (11), and the second photoelectric sensor (64) is located at one end of the stop block (61) near the pusher mechanism (4).

5. The automatic feeding device for cold-drawn steel pipes according to claim 4, characterized in that: The side plate (11) is fixedly connected to a slot (65) on the side near the feed plate (62), and the free end of the feed plate (62) is inserted into the slot (65).

6. The automatic feeding device for cold-drawn steel pipes according to claim 4, characterized in that: Each of the side plates (11) is provided with a moving mechanism (7) that drives the corresponding stop block (61) to slide along the length direction of the side plate (11); Each of the moving mechanisms (7) includes a second drive motor (71), a first bevel gear (72) and a second bevel gear (73). A drive shaft is rotatably arranged between the side plates (11). One end of the drive shaft is fixedly connected to the output shaft of the second drive motor (71). Each of the first bevel gears (72) is fixed on the drive shaft. A slider (75) is provided on the lower side of the stop block (61). A lead screw (74) arranged along the length direction of the side plate (11) is threaded onto the slider (75). The second bevel gear (73) is fixed on the lead screw (74), and the second bevel gear (73) meshes with the first bevel gear (72).

7. The automatic feeding device for cold-drawn steel pipes according to claim 1, characterized in that: The storage mechanism (2) includes a storage bin (21). A discharge port (25) is provided on one side of the storage bin (21). The bottom of the storage bin (21) is inclined towards the discharge port (25). Several support plates (22) are arranged vertically inside the storage bin (21). One end of the support plate (22) is rotatably connected to the inner wall of the storage bin (21). The other end of the support plate (22) is a suspended end. A support seat (23) for supporting the suspended end of the support plate (22) is provided on the inner wall of the storage bin (21). A first return spring (24) is provided inside the support seat (23). The upper end of the first return spring (24) is connected to the bottom of the lower end of the support seat (23), and its lower end is connected to the support seat (23). The distance between two adjacent support plates (22) is greater than the diameter of one steel pipe but less than the diameter of two steel pipes; When the weight of the steel pipe supported above the support plate (22) overcomes the elastic force of the return spring, the suspended end of the support plate (22) can rotate downward, allowing the steel pipe in that layer to roll down to the lower layer; after the steel pipe in that layer rolls down, the support plate (22) returns to the state supported by the support seat (23) under the action of the return spring.

8. The automatic feeding device for cold-drawn steel pipes according to claim 7, characterized in that: A vertically sliding baffle gate (26) is provided at the discharge port (25). A vertical guide rod (29) is connected to the top of the baffle gate (26). An installation block (27) located above the baffle gate (26) is fixedly connected to the outer wall of the storage bin (21). A through hole is provided on the installation block (27) for the moving rod to pass through. A second return spring (28) is sleeved on the guide rod (29). The upper end of the second return spring (28) abuts against the installation block (27), and its lower end abuts against the top of the baffle gate (26), so that the baffle gate (26) closes the discharge port (25) in a natural state. Below the discharge port (25) and on the feeding side of the pushing mechanism (4), there is a flipping mechanism (8) for transferring a single steel pipe from the discharge port (25) to the pushing mechanism (4). The flipping mechanism (8) is set in a one-to-one correspondence with the side plate (11). A linkage mechanism (9) is provided between the flipping mechanism (8) and the baffle gate (26) for opening the baffle gate (26) in conjunction with the flipping mechanism (8) when it performs a specific action.

9. The automatic feeding device for cold-drawn steel pipes according to claim 8, characterized in that: Each set of the flipping mechanism (8) includes a third drive motor (81), a flipping plate (82), a crank (83) and a connecting rod (84). The third drive motor (81) is fixedly installed on the frame (1) and its output shaft is horizontally set. One end of the crank (83) is fixedly connected to the output shaft of the third drive motor (81). The flipping plate (82) is used to support the steel pipe. The middle part of its lower surface is hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to the end of the crank (83), thereby forming a crank (83) rocker mechanism. The flip plate (82) is fixed with support columns (821) whose axes are parallel to the axis of the third drive motor (81) at both ends; when the flip plate (82) is in a horizontal position, bases (85) are provided at both ends of the flip plate (82), and support grooves (86) for supporting the support columns (821) are respectively opened on the upper ends of the two bases (85).

10. The automatic feeding device for cold-drawn steel pipes according to claim 9, characterized in that: Each of the linkage mechanisms (9) includes a second drive gear (91) and an incomplete gear (92). The second drive gear (91) is coaxially fixed on the output shaft of the corresponding third drive motor (81). The incomplete gear (92) is rotatably mounted on the frame (1). One part of the circumference of the incomplete gear (92) has teeth (921), and the other part is a smooth cam surface (922). The teeth (921) of the incomplete gear (92) mesh with the drive gear (91) (53). The lower end of the stop gate (26) is provided with a locking post (93) that contacts the convex wheel.

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