Cold heading process for high strength steel fasteners

Abstract

The application discloses a cold upsetting forming process of high-strength steel fastener and relates to the technical field of fastener processing. The top of the machining table is provided with a drying water storage mechanism, the cutting mechanism comprises a fixing frame which is fixedly connected to the top of the machining table, and the cutting mechanism is used for cutting the cylindrical raw material of the high-strength steel fastener. Through the cutting mechanism, the high-pressure water jet cutting mode is adopted to replace the traditional saw blade cutting, the cutting process is free of hard tool friction loss, the problems of saw blade wear, many cutting burrs and uneven section are effectively solved, meanwhile, metal scraps are not generated, the blank cutting precision is high, the cutting surface is smooth and flat, the cracking and deformation problems in subsequent cold upsetting processing are avoided, the product qualified rate is greatly improved, and the high-precision high-strength steel fastener processing production is adapted.

Description

Technical Field

[0001] This invention relates to the field of fastener processing technology, specifically to a cold heading process for high-strength steel fasteners. Background Technology

[0002] High-strength steel fasteners, with their high strength, high hardness, and excellent fatigue resistance, are widely used in high-end manufacturing fields such as engineering machinery, rail transportation, aerospace, and new energy equipment. Cold heading is currently the mainstream processing technology for high-strength steel fasteners. It relies on room temperature plastic extrusion to complete the blank forming, and has advantages such as high material utilization, fast processing efficiency, complete metal flow lines, and excellent mechanical properties.

[0003] Currently, existing cold heading production lines for high-strength steel fasteners still suffer from numerous technical defects, hindering the quality and efficiency of finished fasteners. Firstly, traditional processing equipment often uses saw blades to cut high-strength steel cylindrical raw materials to a fixed length. High-strength steel has high hardness and wear resistance, making saw blade cutting prone to rapid tool wear, numerous burrs on the cut surface, and uneven cross-sections of the blank. The cutting process also easily generates metal chips, which not only reduces the dimensional accuracy of the blank but also easily causes cracking and deformation defects during subsequent cold heading, resulting in a low product qualification rate. Secondly, existing feeding mechanisms have low automation levels, often relying on manual assistance or simple roller conveyors. This leads to poor stability in pushing cylindrical raw materials, causing them to easily shift and shake during cutting, resulting in poor positioning and clamping effects. The poor uniformity of billet specifications makes it difficult to meet the high-precision processing requirements of high-end fasteners. At the same time, the traditional conveying structure lacks a protective buffer structure, and the cylindrical raw materials of hard high-strength steel are prone to surface scratch damage during the conveying process, which affects the appearance quality and corrosion resistance of the finished product. Furthermore, the existing cutting and processing equipment lacks a dedicated air drying and dehydration structure. After wet cutting, a large amount of water stains remain on the surface of the high-strength steel billet. High-strength steel is extremely prone to oxidation and corrosion in humid environments, and an oxide layer is formed on the surface of the billet. This not only affects the cold heading and extrusion forming effect, but also reduces the corrosion resistance and service life of the fasteners. In addition, traditional wet cutting equipment does not have a wastewater collection, filtration and circulation structure. Cutting wastewater mixed with metal slag is directly discharged, which not only wastes water resources, but also pollutes the production environment, resulting in poor environmental protection in the processing.

[0004] In summary, existing cold heading forming equipment for high-strength steel fasteners suffers from problems such as low cutting accuracy, easy corrosion of billets, low degree of automation, poor water resource utilization, and difficulty in cleaning up waste residue, making it difficult to achieve continuous, high-precision, and environmentally friendly processing and production. Therefore, we propose a cold heading forming process for high-strength steel fasteners. Summary of the Invention

[0005] The purpose of this invention is to provide a cold heading process for high-strength steel fasteners to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a cold heading forming process for high-strength steel fasteners, including a processing table, wherein a conveying mechanism and a cutting mechanism are respectively provided on the top of the processing table, and a drying and water storage mechanism is provided on the top of the processing table. The cutting mechanism includes a fixed frame, which is fixedly connected to the top of the processing table. The cutting mechanism is used to cut cylindrical raw materials of high-strength steel fasteners. The conveying mechanism includes a T-shaped plate, which is fixedly connected to one side of the fixed frame. The conveying mechanism is used to convey cylindrical raw materials of high-strength steel fasteners. The air-drying and water-storage mechanism includes an air-drying chamber, which is fixedly connected to the top of the processing table. The conveying mechanism, cutting mechanism, and air-drying and water-storage mechanism are used together to assist in completing the cold heading process of high-strength steel fasteners.

[0007] Preferably, an electric telescopic rod is fixedly installed on the top of the fixed frame, an extension rod is fixedly connected to the telescopic end of the electric telescopic rod, a water jet cutting head is fixedly connected to one end of the extension rod, a water inlet pipe is fixedly connected to the top of the water jet cutting head, and a movable groove is opened on the inner wall of the fixed frame, which is used in conjunction with the water jet cutting head.

[0008] Preferably, a hydraulic cylinder is fixedly installed on the top of the T-shaped plate, the telescopic end of the hydraulic cylinder extends to the bottom of the fixed plate and is fixedly connected to a pressure plate, and a protective pad is fixedly connected to the bottom of the pressure plate.

[0009] Preferably, both sides of the T-shaped plate are fixedly connected to a fixing plate, the inner wall of the fixing plate is rotatably connected to a rotating block via a bearing, the surface of the rotating block is fixedly connected to a connecting plate, there are six connecting plates, the outer sides of the six connecting plates are jointly fixedly connected to a concave rubber ring, a motor is fixedly connected to one side of the fixing plate, and the output end of the motor is fixedly connected to one side of the rotating block.

[0010] Preferably, the inner wall of the fixing plate is provided with a rotating groove, which is matched with the concave rubber ring for rotational limiting.

[0011] Preferably, the inner wall of the processing table is rotatably connected to a first roller via a bearing, and the number of the first rollers is several.

[0012] Preferably, a second roller is provided at the bottom of the inner wall of the drying chamber, and there are several second rollers. The second rollers are rotatably connected to the inner wall of the processing table through bearings. Drying fans are fixedly installed on the top and both sides of the drying chamber, and there are several drying fans.

[0013] Preferably, a collection box is fixedly connected to the bottom of the processing table, an inclined plate is fixedly connected to one side of the inner wall of the collection box, a support plate is fixedly installed on the other side of the inner wall of the collection box, a water jet special grid is fixedly connected to the inner wall of the support plate, the water jet special grid is located below the water jet cutting head, a water collection trough is opened at the bottom of the inner wall of the collection box, a drain pipe is fixedly connected to the bottom of the collection box, a valve is fixedly installed on the inner wall of the drain pipe, and the drain pipe is connected to the water collection trough.

[0014] Preferably, the bottom of both the processing table and the collection box are fixedly connected with support legs, and the number of support legs is four.

[0015] Preferably, a cold heading process for high-strength steel fasteners includes the following processing steps: S1. Cylindrical raw material feeding: Place the long strip of high-strength steel cylindrical raw material on the surface of the first roller at the top of the processing table to complete the orderly feeding of the cylindrical raw material. The first roller reduces the frictional resistance of the cylindrical raw material conveying. S2. Automatic conveying: Start the motor, the motor drives the rotating block to rotate the connecting plate and the concave rubber ring. The concave rubber ring fits against the surface of the cylindrical raw material and pushes the cylindrical raw material to the cutting mechanism at a uniform speed to realize automated continuous feeding. S3. Positioning and clamping: After the cylindrical raw material is conveyed to the cutting station, the hydraulic cylinder is activated. The hydraulic cylinder pushes the pressure plate down and uses the protective pad to clamp and fix the high-strength steel cylindrical raw material, so as to avoid the cylindrical raw material from shifting or shaking during the cutting process and improve the cutting accuracy. S4. Waterjet Cutting: High-pressure water is supplied to the waterjet cutting head through the inlet pipe. The electric telescopic rod is activated, which drives the extension rod and the waterjet cutting head to move vertically downward along the movable groove. The waterjet cutting head is used to cut the high-strength steel cylindrical raw material to a fixed length to obtain fastener blanks of uniform specifications. After the blanks are cut, they directly enter the surface of the second roller. The wastewater generated by cutting passes through the waterjet special grid and falls into the water collection tank to intercept and filter the cutting waste and prevent the waste from accumulating and clogging the water collection tank. S5. Air drying and dehydration: After cutting, the pressure plate is released from the limiting position of the billet, and the conveying mechanism continues to push the cut billet into the air drying chamber. The billet moves smoothly on the surface of the second roller, and the air drying fan is turned on at the same time to blow air and dry the billet from the top and the side to remove the residual moisture on the surface of the billet and prevent the high-strength steel billet from rusting. S6. Water circulation collection: Cutting wastewater flows along the inclined plate and converges into the water collection tank. When the valve is opened, the wastewater is discharged through the drain pipe. It can be filtered, purified and recycled, saving water resources. S7. Cold heading: After the blank is dried, it is taken out and sent into the cold heading equipment. The blank is extruded, upset and shaped at room temperature to complete the preforming of the fastener head and thread, and finally obtain the high-strength steel fastener finished product.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, by setting up a cutting mechanism, adopts high-pressure water jet cutting to replace traditional saw blade cutting. It is more suitable for cylindrical raw materials of high hardness and high strength steel. There is no friction and wear of hard tools during the cutting process, which effectively solves the problems of saw blade wear, many burrs on the cut, and uneven cross-section. At the same time, no metal chips are generated. The blank cutting accuracy is high and the cut surface is smooth and flat, avoiding cracking and deformation problems in subsequent cold heading processing, greatly improving the product qualification rate, and is suitable for the processing and production of high-precision high-strength steel fasteners.

[0017] 2. This invention, through the setting of a conveying mechanism, uses a motor to drive a rotating block, connecting plate, and concave rubber ring to feed materials at a uniform speed. Combined with a hydraulic cylinder driving a pressure plate for clamping and positioning, this achieves automatic conveying and precise positioning of cylindrical raw materials, preventing deviation and swaying during cutting and ensuring uniformity of billet specifications. Simultaneously, a protective pad is placed at the bottom of the pressure plate, and the concave rubber ring flexibly conforms to the cylindrical raw material, preventing surface scratches and damage during the conveying and clamping of hard cylindrical materials. This protects the integrity of the billet surface, improves the appearance quality and corrosion resistance of the finished product, and the automated feeding structure reduces manual intervention, lowers labor costs, and improves production continuity.

[0018] 3. This invention, by setting up a drying and water storage mechanism, utilizes multiple sets of drying fans to dry and remove water from the blanks after wet cutting from multiple angles, quickly removing residual water stains from the surface of the blanks, preventing the high-strength steel blanks from oxidizing and rusting due to moisture, avoiding the oxide layer from affecting the cold heading forming effect, and ensuring the corrosion resistance and service life of fasteners; at the same time, it is equipped with a collection box, grating, and water collection tank to separate and filter cutting wastewater and waste residue, allowing wastewater to be recycled and reused, and waste residue to be centrally intercepted and cleaned, reducing water waste, reducing the pollution of the environment caused by production sewage discharge, making it green, environmentally friendly, and highly practical. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a side perspective three-dimensional schematic diagram of the overall structure of the present invention; Figure 3 This is a bottom-view perspective view of the overall structure of the present invention; Figure 4 This is a schematic diagram of the connection of a partial structure in this invention; Figure 5 This is a schematic diagram showing the connection between the conveying mechanism and the cutting mechanism in this invention; Figure 6This is a first three-dimensional schematic diagram of a partial structure in this invention; Figure 7 This is a second three-dimensional schematic diagram of a partial structure in this invention; Figure 8 This is a third three-dimensional schematic diagram of a partial structure in this invention.

[0020] In the diagram: 1. Processing table; 2. Conveying mechanism; 201. First roller; 202. Fixed plate; 203. Motor; 204. T-shaped plate; 205. Rotating block; 206. Connecting plate; 207. Rotating groove; 208. Hydraulic cylinder; 209. Concave rubber ring; 3. Cutting mechanism; 301. Fixed frame; 302. Electric telescopic rod; 303. Water inlet pipe; 304. Water jet cutting head; 305. Extension rod; 306. Movable groove; 4. Air drying and water storage mechanism; 401. Collection box; 402. Air drying fan; 403. Second roller; 404. Air drying chamber; 405. Drain pipe; 406. Valve; 407. Water jet special grid; 408. Support plate; 409. Water collection trough; 410. Inclined plate; 5. Support leg; 6. Protective pad; 7. Pressure plate. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figures 1-8 The present invention provides a technical solution: a cold heading forming process for high-strength steel fasteners, including a processing table 1, a conveying mechanism 2 and a cutting mechanism 3 respectively provided on the top of the processing table 1, and a drying and water storage mechanism 4 provided on the top of the processing table 1. The cutting mechanism 3 includes a fixed frame 301, which is fixedly connected to the top of the processing table 1. The cutting mechanism 3 is used to cut cylindrical raw materials of high-strength steel fasteners. The conveying mechanism 2 includes a T-shaped plate 204, which is fixedly connected to one side of the fixed frame 301. The conveying mechanism 2 is used to convey cylindrical raw materials of high-strength steel fasteners. The air-drying and water-storage mechanism 4 includes an air-drying chamber 404, which is fixedly connected to the top of the processing table 1. The conveying mechanism 2, the cutting mechanism 3, and the air-drying and water-storage mechanism 4 work together to assist in completing the cold heading process of high-strength steel fasteners.

[0023] As a further limitation of the cutting mechanism 3 of the present invention, an electric telescopic rod 302 is fixedly installed on the top of the fixed frame 301. An extension rod 305 is fixedly connected to the telescopic end of the electric telescopic rod 302. A water jet cutting head 304 is fixedly connected to one end of the extension rod 305. A water inlet pipe 303 is fixedly connected to the top of the water jet cutting head 304. A movable groove 306 is provided on the inner wall of the fixed frame 301. The movable groove 306 is used in conjunction with the water jet cutting head 304. By setting the structure of electric telescopic rod 302, extension rod 305 and water jet cutting head 304, high-pressure water flow is used as the cutting medium to replace the traditional saw blade mechanical cutting. The cutting method, designed for the high hardness of high-strength steel, utilizes waterjet cutting, eliminating contact wear with hard cutting tools and reducing the need for frequent tool replacements, thus lowering equipment maintenance costs. The electric telescopic rod 302 drives the waterjet cutting head 304 to move vertically and stably downwards along the movable groove 306. This controllable cutting stroke and high motion precision ensure a smooth, burr-free, and metal-shaving-free cut surface, preventing stress cracks during the cutting of cylindrical high-strength steel raw materials. This effectively improves the quality of the cut material, providing a high-quality foundation for subsequent cold heading. Simultaneously, the movable groove 306 limits and guides the cutting head, enhancing the stability of the cutting operation and preventing cutting deviation.

[0024] The specific implementation method of this embodiment is as follows: Before cutting the cylindrical raw material of high-strength steel, the high-strength steel wire to be cut is first fixed on the positioning fixture of the cutting station. The extension stroke of the electric telescopic rod 302 is preset according to the required length of the billet. Then, the high-pressure water supply system is connected to the water inlet pipe 303. After the device is started, the high-pressure water flows through the water inlet pipe 303 and is sent into the water jet cutting head 304. At the same time, the electric telescopic rod 302 drives the extension rod 305 and the water jet cutting head 304 to move vertically downward at a uniform speed along the movable groove 306. The water jet cutting head 304 sprays high-pressure water jet to cut the high-strength steel wire. After the cutting is completed, the electric telescopic rod 302 drives the water jet cutting head 304 to reset. The cut high-strength steel billet can be taken out for subsequent cold heading processing.

[0025] Example 2: Please refer to Figures 1-8 The present invention provides a technical solution: a cold heading process for high-strength steel fasteners. The present invention makes corresponding improvements to the technical problems mentioned in the background art.

[0026] As a further limitation of the conveying mechanism 2 of the present invention, a hydraulic cylinder 208 is fixedly installed on the top of the T-shaped plate 204. The telescopic end of the hydraulic cylinder 208 extends to the bottom of the fixed plate 202 and is fixedly connected to a pressure plate 7. A protective pad 6 is fixedly connected to the bottom of the pressure plate 7. By driving the pressure plate 7 to press down and clamp the cylindrical raw material through the hydraulic cylinder 208, and with the protective pad 6 added to the bottom of the pressure plate 7, the high-strength steel cylindrical raw material can be rigidly clamped and positioned before the cutting operation, preventing the cylindrical raw material from shifting, shaking, or moving during the cutting process, and accurately ensuring the consistency of the fixed length dimension of the blank. At the same time, the protective pad 6 has the characteristics of flexible buffering, anti-slip and wear-resistant, which can prevent the hard pressure plate 7 from directly squeezing the high-strength steel cylindrical raw material and causing surface indentations and scratches, protecting the surface integrity of the cylindrical raw material, preventing damage defects on the surface of the blank, improving the appearance quality and anti-corrosion performance of the finished product, with a simple structure and controllable clamping force, and is suitable for clamping and positioning operations of high-strength steel long cylindrical raw materials of different specifications. Both sides of the T-shaped plate 204 are fixedly connected to fixed plates 202. A rotating block 205 is rotatably connected to the inner wall of the fixed plate 202 via bearings. Connecting plates 206 are fixedly connected to the surface of the rotating block 205. There are six connecting plates 206, and concave rubber rings 209 are fixedly connected to the outer sides of the six connecting plates 206. A motor 203 is fixedly connected to one side of the fixed plate 202. The output end of the motor 203 is fixedly connected to one side of the rotating block 205. By driving the rotating block 205 with the motor 203, the connecting plates 206 and concave rubber rings 209 rotate to feed material. The concave rubber rings 209... 09 The flexible fit to the surface of cylindrical raw materials enables uniform feeding. Compared with traditional roller feeding and manual feeding methods, automated feeding is more stable and has a more uniform pushing force, enabling continuous and uninterrupted feeding. The concave rubber ring 209 made of rubber has good flexibility and will not scratch or bump the surface of the high-strength steel cylindrical raw materials, avoiding wear and scratches during the conveying process. The symmetrical arrangement of the double-sided fixing plates 202 ensures the installation stability of the rotating block 205 and improves the overall rigidity of the feeding structure. It effectively solves the problems of vibration, feeding jamming and uneven conveying in traditional feeding mechanisms, and greatly improves feeding accuracy and conveying efficiency. The inner wall of the fixed plate 202 is provided with a rotating groove 207, which is matched with the concave rubber ring 209 for rotational limiting. By opening the rotating groove 207 inside the fixed plate 202, the rotating groove 207 is used to limit the rotation of the connecting plate 206 and the concave rubber ring 209, restricting the rotation amplitude and rotation trajectory of the concave rubber ring 209, avoiding the concave rubber ring 209 from deflecting, shaking, or excessively deflecting during rotation, and preventing hard collision and wear between the push plate and the fixed plate 202. At the same time, the rotating groove 207 can optimize the rotation angle of the push plate, ensuring that the push plate smoothly conforms to the surface of the cylindrical raw material for pushing, avoiding idling and slippage, further improving the stability of cylindrical raw material conveying, extending the service life of the connecting plate 206, the concave rubber ring 209 and the rotating block 205, reducing the equipment failure rate, and ensuring stable operation of long-term continuous feeding operations. The inner wall of the processing table 1 is rotatably connected to a first roller 201 via bearings. There are several first rollers 201. By setting multiple sets of first rollers 201, long strips of high-strength steel cylindrical raw materials are placed on the roller surface for conveying. The sliding friction of the cylindrical raw materials is transformed into rolling friction, which greatly reduces the frictional resistance during the conveying process of the cylindrical raw materials, reduces the energy consumption of pushing the cylindrical raw materials, and reduces the operating load of the motor 203. At the same time, the multiple sets of first rollers 201 are evenly arranged, which can evenly support the long strips of cylindrical raw materials, avoid the middle of the long cylindrical raw materials being suspended, bent, or deformed, ensure that the cylindrical raw materials are conveyed straight and regular, and prevent the cylindrical raw materials from bending and affecting the cutting accuracy. It is suitable for the stable feeding and conveying of long strips of high-strength steel cylindrical raw materials with large length and heavy weight.

[0027] The specific implementation method of this embodiment is as follows: The long strip of high-strength steel cylindrical raw material to be processed is placed above the first roller 201 of the processing table 1. The motor 203 is started, and the motor 203 drives the rotating block 205 to rotate. The rotating block 205 drives the connecting plate 206 and the concave rubber ring 209 to rotate along the trajectory of the rotating groove 207. The concave rubber ring 209 rotating on both sides pushes the high-strength steel cylindrical raw material forward at a uniform speed. Multiple sets of first rollers 201 convert the sliding friction of the cylindrical raw material into rolling friction, reducing the conveying resistance and uniformly supporting the long strip of cylindrical raw material, keeping the cylindrical raw material straight. When the cylindrical raw material... After the shaped material extends to the set length, the hydraulic cylinder 208 is activated, driving the pressure plate 7 to move down. The protective pad 6 adheres to and presses against the surface of the high-strength steel cylindrical material to complete the positioning. Then, the cutting mechanism 3 cuts the cylindrical material of a fixed length to obtain a cold heading blank of the corresponding specification. After the cutting is completed, the hydraulic cylinder 208 drives the pressure plate 7 to reset, and the concave rubber ring 209 continues to rotate and push the cylindrical material. By repeating the above process, the fixed-length cutting and feeding operation can be completed continuously, and high-strength steel blanks with uniform size and intact surface can be obtained. Subsequently, they can be sent to the cold heading equipment for multi-station cold heading forming to obtain the target high-strength steel fastener finished product.

[0028] Example 3: Please refer to Figures 1-8 The present invention provides a technical solution: a cold heading process for high-strength steel fasteners. The present invention makes corresponding improvements to the technical problems mentioned in the background art.

[0029] As a further limitation of the air-drying and water-storage mechanism 4 of the present invention, a second roller 403 is provided at the bottom of the inner wall of the air-drying chamber 404. There are several second rollers 403. The second rollers 403 are rotatably connected to the inner wall of the processing table 1 through bearings. Air-drying fans 402 are fixedly installed on the top and both sides of the air-drying chamber 404. There are several air-drying fans 402. By setting the second rollers 403 to support the cut blanks, it is ensured that the blanks are smoothly transported to the air-drying area after cutting, avoiding the blanks from getting stuck or piling up. Air-drying fans 402 are arranged on the top and both sides of the air-drying chamber 404 to form a multi-angle, all-round three-dimensional air-drying channel, which can quickly blow away the water stains and water mist attached to the surface of the blanks after water-jet cutting. The high-strength steel blanks are stored and processed in a dry state without water accumulation, which can effectively avoid oxidation and corrosion caused by the humid environment and prevent the formation of an oxide layer on the surface of the blanks from affecting the subsequent cold heading forming accuracy. At the same time, the air-drying structure is simple and the air-drying efficiency is high, which can realize continuous air-drying operation and is suitable for batch production on the assembly line. A collection box 401 is fixedly connected to the bottom of the processing table 1. An inclined plate 410 is fixedly connected to one side of the inner wall of the collection box 401, and a support plate 408 is fixedly installed on the other side of the inner wall of the collection box 401. A water jet-specific grid 407 is fixedly connected to the inner wall of the support plate 408, located below the water jet cutting head 304. A water collection trough 409 is provided at the bottom of the inner wall of the collection box 401, and a drain pipe 405 is fixedly connected to the bottom of the collection box 401. A valve 406 is fixedly installed on the inner wall of the drain pipe 405, which connects to the water collection trough 409. By setting up the collection box 401, the inclined plate 410, the water jet-specific grid 407, and the water collection trough 409 are integrated. The water tank 409 and drainage structure allow wastewater and slag generated from waterjet cutting to fall directly into the collection tank 401. The grid can intercept metal slag, achieving solid-liquid separation and preventing slag accumulation from clogging the drainage channel. The inclined plate 410 guides the wastewater, allowing it to quickly converge into the water tank 409, improving wastewater collection efficiency. The drain pipe 405, equipped with a valve 406, can flexibly control the start and stop of drainage. The collected wastewater can be recycled for waterjet cutting operations after simple filtration and purification, saving industrial water and reducing production costs. At the same time, the centralized storage of slag facilitates unified cleaning later, preventing slag from scattering and polluting the production workshop, improving the processing and production environment, and enhancing the environmental performance of the equipment. Both the processing table 1 and the collection box 401 are fixedly connected to the bottom of the support legs 5. There are four support legs 5. By setting four sets of support legs 5, the overall processing equipment is stably supported and the equipment is raised off the ground. On the one hand, this avoids water and oil stains on the ground from corroding the bottom structure of the equipment and extending the service life of the equipment. On the other hand, it makes it easier for staff to inspect, drain and maintain the bottom of the collection box 401 and the drain pipe 405. The support legs 5 ensure that the equipment is placed stably during operation, reduce the vibration generated by the equipment during cutting and feeding, reduce the impact of equipment resonance on cutting accuracy, and improve the stability of equipment operation. The structure is simple and the support is solid, making it suitable for long-term high-intensity processing in industrial workshops.

[0030] The specific implementation method of this embodiment is as follows: Hot-rolled wire rod is used as the cylindrical raw material. First, the cylindrical raw material is placed in an pickling tank for pickling and rust removal. Then, a lubricating protective layer is formed on the surface of the billet through phosphating and saponification treatment. After the pretreatment is completed, the cylindrical raw material is fed into the feeding mechanism. The feeding roller pushes the cylindrical raw material through the cutting cavity at a uniform speed to the designated cutting position. The water jet cutting head 304 is started, and the cylindrical raw material is cut to a fixed length with a high-pressure water jet of X MPa. The wastewater and waste residue generated by cutting fall downwards. The water jet special grid 407 intercepts the waste residue, and the wastewater flows along the inclined plane. Plate 410 flows into water collection tank 409 for temporary storage. When drainage is needed, valve 406 can be opened to discharge wastewater for recycling. The cut billet is pushed forward by the subsequently pushed cylindrical raw material and conveyed into drying chamber 404 through second roller 403. Multiple sets of drying fans 402 blow dry airflow from the top and sides to dry the surface of the billet from multiple angles. After blowing away the residual water stains on the surface, the dried billet can be sent out to enter the subsequent cold heading process. Finally, the multi-station cold heading machine completes the upsetting, pre-forming, and final forging processes in sequence to obtain the high-strength steel fastener finished product.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cold heading forming process for high-strength steel fasteners, comprising a processing table (1), characterized in that: The top of the processing table (1) is provided with a conveying mechanism (2) and a cutting mechanism (3), and the top of the processing table (1) is provided with a drying and water storage mechanism (4). The cutting mechanism (3) includes a fixed frame (301), which is fixedly connected to the top of the processing table (1). The cutting mechanism (3) is used to cut cylindrical raw materials of high-strength steel fasteners. The conveying mechanism (2) includes a T-shaped plate (204), which is fixedly connected to one side of the fixed frame (301). The conveying mechanism (2) is used to convey cylindrical raw materials of high-strength steel fasteners. The air-drying and water-storage mechanism (4) includes an air-drying chamber (404), which is fixedly connected to the top of the processing table (1). The conveying mechanism (2), the cutting mechanism (3) and the air-drying and water-storage mechanism (4) are used together to assist in completing the cold heading process of high-strength steel fasteners.

2. The cold heading process for high-strength steel fasteners according to claim 1, characterized in that: An electric telescopic rod (302) is fixedly installed on the top of the fixed frame (301). An extension rod (305) is fixedly connected to the telescopic end of the electric telescopic rod (302). A water jet cutting head (304) is fixedly connected to one end of the extension rod (305). A water inlet pipe (303) is fixedly connected to the top of the water jet cutting head (304). An movable groove (306) is provided on the inner wall of the fixed frame (301). The movable groove (306) is used in conjunction with the water jet cutting head (304).

3. The cold heading process for high-strength steel fasteners according to claim 1, characterized in that: A hydraulic cylinder (208) is fixedly installed on the top of the T-shaped plate (204). The telescopic end of the hydraulic cylinder (208) extends to the bottom of the fixed plate (202) and is fixedly connected to a pressure plate (7). A protective pad (6) is fixedly connected to the bottom of the pressure plate (7).

4. The cold heading process for high-strength steel fasteners according to claim 1, characterized in that: Both sides of the T-shaped plate (204) are fixedly connected to a fixing plate (202). The inner wall of the fixing plate (202) is rotatably connected to a rotating block (205) via a bearing. The surface of the rotating block (205) is fixedly connected to a connecting plate (206). There are six connecting plates (206). A concave rubber ring (209) is fixedly connected to the outer sides of the six connecting plates (206). A motor (203) is fixedly connected to one side of the fixing plate (202). The output end of the motor (203) is fixedly connected to one side of the rotating block (205).

5. The cold heading process for high-strength steel fasteners according to claim 4, characterized in that: The inner wall of the fixing plate (202) is provided with a rotating groove (207), which is matched with the concave rubber ring (209) for rotational limiting.

6. The cold heading process for high-strength steel fasteners according to claim 1, characterized in that: The inner wall of the processing table (1) is rotatably connected to a first roller (201) via a bearing, and the number of the first rollers (201) is several.

7. The cold heading process for high-strength steel fasteners according to claim 1, characterized in that: The bottom of the inner wall of the drying chamber (404) is provided with a second roller (403), and there are several second rollers (403). The second rollers (403) are rotatably connected to the inner wall of the processing table (1) through bearings. The top and sides of the drying chamber (404) are fixedly installed with drying fans (402), and there are several drying fans (402).

8. The cold heading process for high-strength steel fasteners according to claim 1, characterized in that: A collection box (401) is fixedly connected to the bottom of the processing table (1). An inclined plate (410) is fixedly connected to one side of the inner wall of the collection box (401). A support plate (408) is fixedly installed on the other side of the inner wall of the collection box (401). A water jet special grid (407) is fixedly connected to the inner wall of the support plate (408). The water jet special grid (407) is located below the water jet cutting head (304). A water collection trough (409) is opened at the bottom of the inner wall of the collection box (401). A drain pipe (405) is fixedly connected to the bottom of the collection box (401). A valve (406) is fixedly installed on the inner wall of the drain pipe (405). The drain pipe (405) is connected to the water collection trough (409).

9. The cold heading process for high-strength steel fasteners according to claim 1, characterized in that: The bottom of both the processing table (1) and the collection box (401) are fixedly connected with support legs (5), and the number of support legs (5) is four.

10. The cold heading process for high-strength steel fasteners according to claim 1, characterized in that: The processing steps include the following: S1. Cylindrical raw material feeding: Place the long strip of high-strength steel cylindrical raw material on the surface of the first roller (201) at the top of the processing table (1) to complete the orderly feeding of the cylindrical raw material. The frictional resistance of the cylindrical raw material is reduced by relying on the first roller (201). S2. Automatic conveying: Start the motor (203), the motor (203) drives the rotating block (205) to drive the connecting plate (206) and the concave rubber ring (209) to rotate. The concave rubber ring (209) fits against the surface of the cylindrical raw material and pushes the cylindrical raw material to the cutting mechanism (3) at a uniform speed to realize automated continuous feeding. S3. Positioning and clamping: After the cylindrical raw material is transported to the cutting station, the hydraulic cylinder (208) is started. The hydraulic cylinder (208) pushes the pressure plate (7) down and uses the protective pad (6) to clamp and fix the high-strength steel cylindrical raw material to avoid the cylindrical raw material from shifting or shaking during the cutting process and improve the cutting accuracy. S4. Waterjet cutting: High-pressure water is delivered to the waterjet cutting head (304) through the water inlet pipe (303). The electric telescopic rod (302) is activated. The electric telescopic rod (302) drives the extension rod (305) and the waterjet cutting head (304) to move vertically down along the movable groove (306). The waterjet cutting head (304) is used to cut the high-strength steel cylindrical raw material to a fixed length to obtain fastener blanks with uniform specifications. After the cutting is completed, the blanks directly enter the surface of the second roller (403). The wastewater generated by cutting passes through the waterjet special grid (407) and falls into the water collection tank (409) to intercept and filter the cutting waste, so as to avoid the waste from accumulating and clogging the water collection tank (409). S5. Air drying and dehydration: After cutting, the pressure plate (7) is released from its clamping limit on the billet. The conveying mechanism (2) continues to push the cut billet into the air drying chamber (404). The billet moves smoothly on the surface of the second roller (403). At the same time, the air drying fan (402) is turned on to blow air dry the billet from the top and sides in all directions to remove the residual moisture on the surface of the billet and prevent the high-strength steel billet from rusting. S6. Water circulation collection: Cutting wastewater is guided along the inclined plate (410) to the water collection tank (409). When the valve (406) is opened, the wastewater is discharged through the drain pipe (405). It can be filtered and purified and then recycled to save water resources. S7. Cold heading: After the blank is dried, it is taken out and sent into the cold heading equipment. The blank is extruded, upset and shaped at room temperature to complete the preforming of the fastener head and thread, and finally obtain the high-strength steel fastener finished product.

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