Highly applicable cold-drawing equipment and application process thereof

Abstract

The application relates to the technical field of steel pipe cold-drawing processing, and discloses a high-applicability cold-drawing equipment and an application process thereof, which comprises a base, a traction seat, a cold-drawing die and a hydraulic device, the base is provided with a track in the length direction of the base, the traction seat is slidingly arranged on the track, the cold-drawing die and the hydraulic device are arranged at the end of the base, the traction seat is connected with the hydraulic device, a driving block is slidingly arranged in the traction seat along the axial direction of the inner cavity of the traction seat, coaxial inner abutting pipes and outer abutting blocks are arranged on the side of the driving block facing the cold-drawing die, the inner abutting pipes are coaxially fixedly arranged on the side wall of the driving block, a tensioning mechanism for abutting the inner wall of a pipe is movably arranged on the inner abutting pipes, the inner cavity diameter of the traction seat gradually increases along the traction direction of the pipe, the top of the outer abutting block is slidingly arranged on the inner wall of the traction seat along the axial direction of the inner abutting pipes, and the side wall of the outer abutting block is slidingly arranged on the side wall of the driving block along the diameter direction of the inner abutting pipes. The application improves the applicability of the cold-drawing equipment.

Description

Technical Field

[0001] This application relates to the field of metal tube processing technology, and in particular to a highly applicable cold drawing equipment and its application process. Background Technology

[0002] In the metal processing industry, cold drawing is a crucial method for improving the mechanical properties of metal tubing. This process alters the diameter or wall thickness of metal tubing by drawing it through a specific die, thereby optimizing its mechanical properties and surface quality. With the rapid development of modern industry, the demand for metal tubing is increasingly shifting towards higher strength and lighter weight, driving continuous advancements in cold drawing technology to meet more stringent quality standards and diverse market demands. Cold drawing technology has wide applications in aerospace, automotive manufacturing, and energy sectors, significantly improving product reliability and lifespan.

[0003] The traction seat in existing cold drawing equipment is a key component for shaping metal tubes. Such devices often use fixed clamps to firmly hold one end of the metal tube to be processed, ensuring that the tube will not detach during the drawing process. These clamps are typically made of rigid materials and can withstand high tensile forces. Specifically, existing cold drawing equipment mainly employs the following methods: first, using a fixed jaw structure to clamp the tube through mechanical locking; second, using a spring-loaded clamping structure to clamp the tube through pressure generated by elastic deformation; and third, using a clamping mechanism driven by a pneumatic or hydraulic cylinder to achieve the clamping action through pneumatic or hydraulic power.

[0004] However, these traditional methods have significant shortcomings when processing thin-walled or large-diameter pipes. Fixed clamps lack flexibility in controlling clamping force, easily causing damage to the pipe end face due to excessive clamping force, or even scrapping the product. Furthermore, fixed clamps have limited applicability and cannot effectively adapt to metal pipes of different diameters, which not only restricts the flexibility of the production process but also significantly increases production costs for enterprises. Therefore, designing a new cold-drawing device that can flexibly handle metal pipes of different diameters has become an urgent technical challenge. Summary of the Invention

[0005] In order to improve the adaptability of cold drawing equipment and enable it to maintain good clamping effect when processing metal pipes of different diameters, this application provides a highly applicable cold drawing equipment and its application process.

[0006] The technical solution for the highly applicable cold drawing equipment and its application process provided in this application is as follows:

[0007] A highly adaptable cold drawing device includes a base, a traction seat, a cold drawing die, and a hydraulic device. A track is provided on the base along its length. The traction seat is slidably connected to the track. The cold drawing die and the hydraulic device are respectively located at the ends of the base, and the traction seat is connected to the hydraulic device. A drive block is slidably connected to the traction seat along its inner cavity axially. An inner abutment tube and an outer abutment block are coaxially arranged on the side of the drive block facing the cold drawing die. The inner abutment tube is coaxially fixed to the side wall of the drive block, and a tensioning mechanism for supporting the inner wall of the tube is movably arranged on the inner abutment tube. The inner diameter of the traction seat gradually increases along the traction direction of the tube. The top of the outer abutment block is slidably connected to the inner wall of the traction seat along the axial direction of the inner abutment tube, and its side wall is slidably connected to the side wall of the drive block along the diameter direction of the inner abutment tube.

[0008] By adopting the above technical solution, the synergistic action of the base, traction seat, cold drawing die, and hydraulic device enables the traction seat to slide smoothly on the track. Simultaneously, the combined design of the inner abutment tube and outer abutment block effectively prevents the tube from detaching and deforming during the drawing process, improving the stability and efficiency of the cold drawing process. Furthermore, the tensioning mechanism design further enhances the support force on the inner wall of the tube, avoiding product quality problems caused by insufficient clamping force. This enables the cold drawing equipment to effectively clamp metal tubes of different diameters, significantly improving the equipment's adaptability and reliability.

[0009] Optionally, the inner abutment tube has several through holes distributed along its circumference on its side wall, which communicate with the inner cavity. The tensioning mechanism includes a guide rod coaxially disposed in the inner abutment tube, a drive sleeve slidably sleeved on the inner abutment tube, a support block slidably connected to the inclined conical surface of the drive sleeve, and a triggering element that drives the drive sleeve to slide. Each support block is provided for each through hole and slides in a radial fit with the through hole along the inner abutment tube. The triggering element is disposed on the side wall of the drive block. When the tube is sleeved on the inner abutment tube, the end of the tube abuts against the triggering element.

[0010] By adopting the above technical solution, the several through holes opened on the side wall of the inner retaining tube, in conjunction with the tensioning mechanism, allow the end of the tube to contact the trigger when it is fitted onto the inner retaining tube. The trigger then drives the drive sleeve to slide, causing the retaining block to slide radially along the inner retaining tube and press firmly against the inner wall of the tube. This design effectively improves the clamping stability of the tube, avoids the problem of tube slippage due to insufficient clamping force, and can also adapt to tubes of different diameters, enhancing the applicability and flexibility of the equipment.

[0011] Optionally, the drive block has an inner abutment tube with an opening in the mounting cavity. A rotating rod is fixedly installed in the mounting cavity perpendicular to the guide rod. The triggering element includes a push rod that is slidably installed on one side of the inner abutment tube parallel to the guide rod and a transmission rod that is rotatably sleeved on the rotating rod. The push rod slides through the side wall of the inner abutment tube and extends into the mounting cavity. The end of the push rod located in the mounting cavity is rotatably connected to one end of the transmission rod through a hinge joint. The other end of the transmission rod is rotatably connected to the side wall of the drive sleeve through a hinge joint.

[0012] By adopting the above technical solution, when the tube is sleeved on the inner abutment tube, the end of the tube contacts the push rod. Under pressure, the push rod slides axially along the inner abutment tube, transmitting power to the drive sleeve via the transmission rod. This causes the drive sleeve to slide axially along the inner abutment tube, thereby driving the support block to slide radially along the through hole, effectively supporting the inner wall of the tube. This design not only ensures stable clamping of the tube during cold drawing but also avoids damage to the tube caused by excessive clamping force, improving the applicability and reliability of the cold drawing equipment.

[0013] Optionally, a locking element is provided in the mounting cavity. A bidirectional lead screw and a guide rod are arranged parallel to each other on both sides of the axial direction of the guide rod. The bidirectional lead screw is rotatably disposed in the mounting cavity along an axial direction perpendicular to the guide rod. One locking element is provided for each thread segment of the bidirectional lead screw. The locking element includes a push block that is threaded onto the thread segment of the bidirectional lead screw and a telescopic rod that is rotatably connected between the end wall of the drive sleeve and the push block through a hinge joint. Each push block is slidably disposed on the guide rod, and a servo motor that drives the bidirectional lead screw to rotate is provided on the drive block.

[0014] By adopting the above technical solution, during the initial positioning of the pipe by inserting it into the traction seat, the push block is in a stationary state. At this time, the sliding of the drive sleeve stretches the rod end inside the telescopic rod away from the top wall of the cylinder. When the pipe inside the traction seat is initially positioned, the drive sleeve is in a stationary state. At this time, the servo motor drives the bidirectional screw to rotate, causing the push block to move along the bidirectional screw, thereby pushing the top wall of the telescopic rod inside the cylinder towards the rod end until the rod end inside the telescopic rod contacts the top wall of the cylinder, further firmly clamping the pipe on the inner abutment tube, preventing loosening or slippage during the cold drawing process, and improving the stability of the traction seat in clamping pipes of different diameters.

[0015] Optionally, a rotating motor is provided on the side wall of the traction seat near the hydraulic device. The output shaft of the rotating motor is coaxially connected to a screw. An adjustment groove is provided on the side wall of the drive block facing the rotating motor. The screw is located in the adjustment groove and is engaged with the adjustment groove by a threaded rotation.

[0016] By adopting the above technical solution, the rotation motor is configured to allow the drive block to be precisely adjusted within the traction seat, ensuring the stability and accuracy of the tube during the cold drawing process, effectively avoiding cold drawing quality problems caused by positional deviations, and improving the product qualification rate.

[0017] Optionally, a protective rod is provided between the cold drawing die and the hydraulic device, parallel to the length direction of the track, and multiple protective rods are provided on both sides of the sliding direction of the traction seat.

[0018] By adopting the above technical solution, the protective rods effectively prevent the traction seat from shifting or deviating from the track during sliding, thus improving the stability and safety of the equipment operation. Simultaneously, the protective rods, distributed on both sides of the traction seat's sliding direction, further enhance the constraint on the traction seat, avoiding unexpected situations caused by external factors and ensuring the smooth progress of the entire cold drawing process.

[0019] Optionally, a plurality of placement racks are distributed along the length of the track on one side of the base. Each placement rack is arranged perpendicular to the length of the track. Each placement rack has a feeding rod pneumatically telescopically mounted at its end facing the base, and the ends of the feeding rod opposite to the placement rack are vertically mounted with limit plates.

[0020] By adopting the above technical solution, multiple placement racks distributed along the length of the track on one side of the base can effectively support and store the cold-drawn pipes, preventing deformation or damage caused by pipe accumulation. Each placement rack is set perpendicular to the track, ensuring the stability and neatness of the pipes during placement. The end of the placement rack facing the base utilizes a pneumatically telescopic feeding rod, which can quickly extend and position itself below the pipe after demolding, ensuring the pipe falls smoothly onto the placement rack and improving production efficiency. The ends of the feeding rod opposite to the placement rack are each equipped with vertically set limiting plates to prevent the pipes from shifting or falling during placement, further enhancing operational safety and reliability.

[0021] An application process for a highly applicable cold drawing equipment includes the following steps:

[0022] S1. Pass the end of the pipe through the discharge port of the cold drawing die;

[0023] S2. Insert the end of the pipe into the traction seat and put it on the inner abutment pipe;

[0024] S3. Push the pipe toward the drive block, so that the end wall of the pipe abuts against the push rod, until the support block is pressed against the inner wall of the pipe.

[0025] S4. Start the servo motor to drive the bidirectional lead screw to rotate until the rod end inside the telescopic rod contacts the top wall inside the cylinder. At this time, the support block is kept in a tight position against the inner wall of the pipe.

[0026] S5. Start the rotating motor. Under the limit of the screw rotation and the inner wall of the traction seat, the drive block drives the pipe, inner abutment and outer abutment to slide synchronously toward the direction of the cold drawing die. The outer abutment slides along the inner wall of the traction seat with the inner diameter gradually decreasing until the outer abutment clamps and positions the pipe on the abutment block.

[0027] S6. Start the hydraulic device. The piston rod of the hydraulic device retracts, thereby pulling the traction seat holding the pipe to move synchronously along the track until the traction seat slides out of the extension range of the feeding rod. The pneumatic drive causes the feeding rod to extend and be located below the pipe.

[0028] S7. The traction seat holds the end of the tube and slides continuously until the tube is removed from the cold drawing mold. Then the traction seat releases the clamp on the tube and the tube falls onto the extended feeding rod. The pneumatic drive retracts the feeding rod into the placement rack. Under the restriction of the limit plate, the cold-drawn tube is placed on several placement racks.

[0029] By adopting the above technical solution, the following effects were achieved:

[0030] S1. Stable introduction of pipe end: By passing the pipe end through the outlet of the cold drawing die and inserting it into the traction seat, the accurate position of the pipe is ensured, avoiding processing problems caused by initial position deviation.

[0031] S2. Automatic clamping and adjustment: Pushing the end of the pipe to the contact push rod triggers the support block to clamp against the inner wall of the pipe, realizing automatic adaptation and stable clamping of pipes of different diameters, improving the applicability and reliability of the equipment.

[0032] S3. Precise control of clamping force: The servo motor is started, which drives the bidirectional lead screw to rotate, so that the rod end inside the telescopic rod contacts the top wall inside the cylinder, maintaining a constant pressure of the support block on the inner wall of the pipe, preventing damage to the pipe end face and ensuring product quality.

[0033] S4. Precise Positioning and Propulsion: Start the rotating motor. Through the rotation of the screw and the limiting action of the inner wall of the traction seat, the drive block drives the pipe, inner abutment and outer abutment to slide synchronously toward the cold drawing die. The outer abutment slides along the inner wall of the traction seat with the inner diameter gradually decreasing, and finally clamps and positions the pipe on the abutment block, ensuring the precise processing of the pipe.

[0034] S5. High-efficiency cold drawing process: The hydraulic device is activated, the piston rod retracts, and the traction seat holding the tube moves along the track until the traction seat slides out of the extension range of the feeding rod. The pneumatic drive causes the feeding rod to extend and be located below the tube, realizing continuous cold drawing of the tube and improving production efficiency.

[0035] S6. Automated unloading and collection: The traction seat clamps the end of the pipe and slides continuously until the pipe is removed from the cold drawing die. The traction seat releases the clamp on the pipe, and the pipe falls onto the extended unloading rod. The pneumatic drive retracts the unloading rod into the placement rack. Under the restriction of the limit plate, the cold-drawn pipe is placed on several placement racks, realizing automated unloading and collection, reducing manual intervention and improving the level of production automation.

[0036] In summary, this application includes at least one of the following beneficial technical effects:

[0037] 1. The adjustable tensioning mechanism enables effective clamping of metal pipes of different diameters, avoiding damage to the pipe end face caused by excessive clamping force, and improving product quality and production efficiency.

[0038] 2. The synergistic effect of the inner retainer tube and the outer retainer block ensures that the tube remains in a stable clamping state during the cold drawing process, reducing the risk of slippage during the drawing process and enhancing the reliability of the equipment;

[0039] 3. The linkage design between the hydraulic device and the traction seat enables precise positioning and stable transmission of the pipe, further improving the automation level and production stability of the cold drawing process. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0041] Figure 2 This is a cross-sectional view showing the internal structure of the traction seat in the embodiments of this application.

[0042] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0043] Figure 4 This is a cross-sectional view illustrating the distribution of the support blocks on the inner support tube in the embodiments of this application.

[0044] Figure 5 This is a schematic diagram illustrating the positional relationship between the bidirectional lead screw, the guide rod, and the drive sleeve in the embodiments of this application.

[0045] Explanation of reference numerals in the attached figures:

[0046] 01. Pipe; 1. Base; 11. Track; 2. Traction seat; 21. Drive block; 211. Adjustment groove; 212. Mounting cavity; 2121. Rotating rod; 22. Rotating motor; 221. Screw; 23. Locking element; 231. Push block; 242. Telescopic rod; 24. Two-way lead screw; 241. Servo motor; 25. Smooth rod; 3. Cold drawing die; 4. Hydraulic device; 5. Protective rod; 6. Placement rack; 61. Unloading rod; 62. Limiting plate; 7. Inner abutment tube; 71. Through hole; 8. Outer abutment block; 9. Tensioning mechanism; 91. Guide rod; 92. Drive sleeve; 93. Support block; 94. Trigger element; 941. Push rod; 942. Transmission rod. Detailed Implementation

[0047] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0048] This application discloses a highly applicable cold drawing device and its application process.

[0049] Reference Figure 1 A highly adaptable cold drawing device includes a base 1, a traction seat 2, a cold drawing die 3, and a hydraulic device 4. A track 11 is fixedly installed on the base 1 along its length. The traction seat 2 is slidably connected to the track 11. The cold drawing die 3 and the hydraulic device 4 are respectively fixedly installed at the ends of the base 1, and the traction seat 2 is fixedly connected to the end of a piston rod telescopically mounted on the hydraulic device 4. A protective rod 5 is fixedly installed between the cold drawing die 3 and the hydraulic device 4, parallel to the length of the track 11. Multiple protective rods 5 are installed on both sides of the sliding direction of the traction seat 2. In this embodiment, four are used as an example. Two protective rods 5 on the same side of the traction seat 2 are located near the top and bottom of the traction seat 2, respectively. Several placement racks 6 are distributed and installed on one side of the base 1 along the length of the track 11. In this embodiment, four are used as an example. Each placement rack 6 is perpendicular to the length of the track 11. A feeding rod 61 is pneumatically telescopically mounted on the end of each placement rack 6 facing the base 1, and a limit plate 62 is vertically fixed on the end of the feeding rod 61 opposite to the placement rack 6.

[0050] Reference Figure 1The end of the tube 01 is passed through the outlet of the cold drawing mold 3 and inserted into the traction seat 2 for clamping and fixing. The hydraulic device 4 is activated, and the piston rod of the hydraulic device 4 retracts, thereby pulling the traction seat 2 holding the tube 01 to move synchronously along the track 11 until the traction seat 2 slides out of the extension range of the unloading rod 61. The unloading rod 61 is pneumatically driven to extend and be located below the tube 01. The traction seat 2 continues to slide the end of the tube 01 until the tube 01 is removed from the cold drawing mold 3. Then the traction seat 2 releases the clamp on the tube 01, and the tube 01 falls onto the extended unloading rod 61. The unloading rod 61 is pneumatically driven to retract into the placement rack 6. Under the restriction of the limiting plate 62, the cold-drawn tube 01 is placed on several placement racks 6.

[0051] Reference Figure 1 In this embodiment, the die eye of the cold drawing die 3 can be replaced according to the needs of tubes 01 with different diameters.

[0052] Reference Figure 2 The traction seat 2 is slidably connected to the drive block 21 along its own inner cavity. A rotating motor 22 is fixedly installed on the side wall of the traction seat 2 near the hydraulic device 4. The output shaft of the rotating motor 22 is coaxially connected to a screw 221. An adjustment groove 211 is opened on the side wall of the drive block 21 facing the rotating motor 22. The screw 221 is located in the adjustment groove 211 and is engaged with the adjustment groove 211 by a threaded rotation.

[0053] Reference Figure 2 and Figure 3 The drive block 21 is coaxially provided with an inner abutment tube 7 and an outer abutment block 8 on the side facing the cold drawing die 3, wherein the inner abutment tube 7 is coaxially fixed on the side wall of the drive block 21. In order to improve the stable tensioning of the cold drawing equipment for tubes 01 with different inner diameters, a tensioning mechanism 9 for abutting the inner wall of the tube 01 is movably provided on the inner abutment tube 7.

[0054] Reference Figure 2 , Figure 3 and Figure 4 The inner tube 7 has several through holes 71 distributed along its circumference on its side wall. In this embodiment, three through holes 71 are evenly distributed along the circumference of the inner tube 7. The drive block 21 has an installation cavity 212 connected to the inner tube 7. The tensioning mechanism 9 includes a guide rod 91, a drive sleeve 92, a support block 93, and a trigger 94. The guide rod 91 is coaxial with the inner tube 7 and is fixedly installed on the opposite side walls of the inner tube 7 and the installation cavity 212. The drive sleeve 92 is located inside the inner tube 7 and the installation cavity 212 and is slidably sleeved on the inner tube 7. One support block 93 is provided for each through hole 71 and slides with the through hole 71 along the radial direction of the inner tube 7. The support block 93 is slidably connected to the inclined conical surface of the drive sleeve 92 through an inclined surface fit.

[0055] Reference Figure 3 and Figure 5 A rotating rod 2121 is fixedly installed in the mounting cavity 212 perpendicular to the axial direction of the guide rod 91. The trigger 94 includes a push rod 941 and a transmission rod 942. In this embodiment, there are two push rods 941, which are distributed vertically on both sides of the axial direction of the guide rod 91. The push rod 941 slides parallel to the axial direction of the guide rod 91 through the side wall of the inner abutment tube 7 and extends into the mounting cavity 212. The transmission rod 942 is rotatably sleeved on the rotating rod 2121. The end of the push rod 941 located in the mounting cavity 212 is rotatably connected to one end of the transmission rod 942 through a hinge joint. The other end of the transmission rod 942 is rotatably connected to the side wall of the drive sleeve 92 through a hinge joint.

[0056] Reference Figure 3 and Figure 5 To prevent the tube 01 from loosening or slipping during cold drawing, a locking element 23 is provided in the mounting cavity 212. A bidirectional lead screw 24 and a smooth rod 25 are arranged parallel to each other on both sides of the guide rod 91. The bidirectional lead screw 24 is rotatably mounted in the mounting cavity 212 along an axis perpendicular to the guide rod 91. A servo motor 241 is fixedly mounted on the drive block 21, embedded in the inner top wall of the mounting cavity 212, and its output shaft is coaxially fixedly connected to the bidirectional lead screw 24. One locking element 23 is provided for each thread segment of the bidirectional lead screw 24, and the smooth rod 25 is fixedly mounted in the mounting cavity 212.

[0057] Reference Figure 3 and Figure 5 The locking element 23 includes a push block 231 and a telescopic rod 242. The push block 231 is threaded onto the threaded section of the double-acting lead screw 24 and simultaneously slidably mounted on the smooth rod 25. The telescopic rod 242 is rotatably connected between the end wall of the drive sleeve 92 and the push block 231 via a hinge joint.

[0058] Reference Figure 2 and Figure 4 The inner diameter of the traction seat 2 gradually increases along the traction direction of the pipe 01. The top of the outer abutment block 8 is slidably connected to the inner wall of the traction seat 2 along the axial direction of the inner abutment tube 7, and the side wall is slidably connected to the side wall of the drive block 21 along the diameter direction of the inner abutment tube 7. In this embodiment, there are three outer abutment blocks 8 distributed at equal angles along the circumference of the inner abutment tube 7.

[0059] Reference Figures 1 to 5 An application process for a highly applicable cold drawing equipment includes the following steps:

[0060] S1. Pass the end of the pipe 01 out through the discharge port of the cold drawing die 3;

[0061] S2. Insert the end of pipe 01 into the traction seat 2 and put it on the inner abutment pipe 7;

[0062] S3. Push the pipe 01 toward the drive block 21 so that the end wall of the pipe 01 abuts against the push rod 941 and push the push rod 941 toward the mounting cavity 212. Under the action of the transmission rod 942 rotating around the rotating rod 2121, the drive sleeve 92 slides in the opposite direction. Under the limit of the through hole 71, the sliding drive sleeve 92 drives the support block 93 to approach the inner wall of the pipe 01 until it abuts against the inner wall of the pipe 01.

[0063] S4. Start the servo motor 241 to drive the bidirectional lead screw 24 to rotate. Under the limit of the guide rod 25, the two push blocks 231 slide relative to each other until the rod end inside the telescopic rod 242 contacts the top wall inside the cylinder. At this time, the support block 93 cannot retract into the inner cavity of the tube 7.

[0064] S5. Start the rotating motor 22. Under the rotation of the screw 221 and the limit of the inner wall of the traction seat 2, the drive block 21 drives the pipe 01, the inner abutment 7 and the outer abutment 8 to slide synchronously toward the cold drawing mold 3. The outer abutment 8 slides along the inner wall of the traction seat 2, which gradually reduces the inner diameter, until the outer abutment 8 clamps and positions the pipe 01 on the support block 93.

[0065] S6. Start the hydraulic device 4. The piston rod of the hydraulic device 4 retracts, thereby pulling the traction seat 2 holding the pipe 01 to move synchronously along the track 11 until the traction seat 2 slides out of the extension range of the feeding rod 61. The pneumatic drive causes the feeding rod 61 to extend and be located below the pipe 01.

[0066] S7. The traction seat 2 holds the end of the tube 01 and slides continuously until the tube 01 is removed from the cold drawing mold 3. Then the traction seat 2 releases the clamp on the tube 01 and the tube 01 falls onto the extended feeding rod 61. The pneumatic drive causes the feeding rod 61 to retract into the placement frame 6. Under the restriction of the limiting plate 62, the cold-drawn tube 01 is placed on several placement frames 6.

[0067] The implementation principle of a highly applicable cold drawing device and its application process according to this application embodiment is as follows: This embodiment achieves effective clamping of pipes 01 of different diameters by adopting a tensioning mechanism 9 and a driving block 21. The tensioning mechanism 9, through the coordinated action of the guide rod 91, driving sleeve 92, abutment block 93, and trigger element 94, can automatically adjust the position of the abutment block 93 when the pipe 01 is fitted onto the inner abutment tube 7, thereby achieving uniform support for the inner wall of the pipe 01. The driving block 21, through the coordinated action of the mounting cavity 212, rotating shaft, push rod 941, transmission rod 942, bidirectional lead screw 24, guide rod 25, push block 231, telescopic rod 242, and servo motor 241, can precisely control the position of the abutment block 93 under the drive of the servo motor 241, ensuring the stability and reliability of the pipe 01 during the cold drawing process. This design not only improves the applicability of the equipment but also reduces production costs and enhances product quality and market competitiveness.

[0068] 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. A highly applicable cold drawing device, characterized in that... The system includes a base (1), a traction seat (2), a cold drawing die (3), and a hydraulic device (4). A track (11) is provided on the base (1) along its length. The traction seat (2) is slidably mounted on the track (11). The cold drawing die (3) and the hydraulic device (4) are respectively located at the ends of the base (1), and the traction seat (2) is connected to the hydraulic device (4). A drive block (21) is slidably mounted inside the traction seat (2) along its inner cavity. An inner abutment tube (7) and an outer abutment block (8) are coaxially mounted on the side of the drive block (21) facing the cold drawing die (3). The inner abutment tube (7) is coaxially fixed on the side wall of the drive block (21), and abutment blocks are movably mounted on the inner abutment tube (7). The tensioning mechanism (9) supports the inner wall of the pipe (01). The inner diameter of the traction seat (2) gradually increases along the traction direction of the pipe (01). The top of the outer abutment block (8) is slidably disposed on the inner wall of the traction seat (2) along the axial direction of the inner abutment tube (7), and the side wall is slidably disposed on the side wall of the drive block (21) along the diameter direction of the inner abutment tube (7). Several through holes (71) communicating with the inner cavity are distributed circumferentially on the side wall of the inner abutment tube (7). The tensioning mechanism (9) includes a guide rod (91) coaxially disposed in the inner abutment tube (7), a drive sleeve (92) slidably sleeved on the inner abutment tube (7), an abutment block (93) slidably connected to the inclined conical surface of the drive sleeve (92), and a drive sleeve (92) for driving. A sliding trigger (94) is provided, and the abutment block (93) is provided for each through hole (71), and slides radially with the through hole (71) along the inner abutment tube (7). The trigger (94) is provided on the side wall of the drive block (21). When the tube (01) is sleeved on the inner abutment tube (7), the end of the tube (01) abuts against the trigger (94). The drive block (21) has an installation cavity (212) connected to the inner abutment tube (7). A rotating rod (2121) is fixedly provided in the installation cavity (212) perpendicular to the axial direction of the guide rod (91). The trigger (94) includes a push rod that slides parallel to the axial direction of the guide rod (91) on one side of the inner abutment tube (7). The push rod (941) and the transmission rod (942) are rotatably sleeved on the rotating rod (2121). The push rod (941) slides through the side wall of the inner abutment tube (7) and extends into the mounting cavity (212). The end of the push rod (941) located in the mounting cavity (212) is rotatably connected to one end of the transmission rod (942) through a hinge joint. The other end of the transmission rod (942) is rotatably connected to the side wall of the drive sleeve (92) through a hinge joint. A locking element (23) is provided in the mounting cavity (212). A double-acting screw (24) and a smooth rod (25) are arranged parallel to each other on both axial sides of the guide rod (91). The double-acting screw (24) is rotatably arranged in the mounting cavity (212) along an axial direction perpendicular to the guide rod (91).One locking member (23) is provided for each thread segment of the bidirectional lead screw (24). The locking member (23) includes a push block (231) threaded onto the thread segment of the bidirectional lead screw (24), and a telescopic rod (242) rotatably connected between the end wall of the drive sleeve (92) and the push block (231) via a hinge joint. Each push block (231) is slidably mounted on the smooth rod (25), and a servo motor (241) is provided on the drive block (21) to drive the bidirectional lead screw (24) to rotate.

2. The highly applicable cold drawing equipment according to claim 1, characterized in that... A rotating motor (22) is provided on the side wall of the traction seat (2) near the hydraulic device (4). The output shaft of the rotating motor (22) is coaxially connected to a screw (221). An adjustment groove (211) is provided on the side wall of the drive block (21) facing the rotating motor (22). The screw (221) is located in the adjustment groove (211) and is engaged with the adjustment groove (211) by a threaded rotation.

3. The highly applicable cold drawing equipment according to claim 1, characterized in that... A protective rod (5) is provided between the cold drawing die (3) and the hydraulic device (4) in the length direction parallel to the track (11), and multiple protective rods (5) are provided on both sides of the sliding direction of the traction seat (2).

4. The highly applicable cold drawing equipment according to claim 2, characterized in that... A plurality of placement racks (6) are distributed along the length direction of the track (11) on one side of the base (1). Each placement rack (6) is arranged perpendicular to the length direction of the track (11). Each placement rack (6) is pneumatically telescopically provided with a feeding rod (61) at the end facing the base (1), and the ends of the feeding rod (61) opposite to the placement rack (6) are vertically provided with limit plates (62).

5. An application process for the highly adaptable cold drawing equipment according to claim 4, characterized in that... Includes the following steps: S1. Pass the end of the pipe (01) through the discharge port of the cold drawing die (3); S2. Insert the end of the pipe (01) into the traction seat (2) and put it on the inner abutment pipe (7); S3. Push the pipe (01) in the direction toward the drive block (21) so that the end wall of the pipe (01) abuts against the push rod (941) until the support block (93) abuts against the inner wall of the pipe (01); S4. Start the servo motor (241) to drive the bidirectional lead screw (24) to rotate until the rod end inside the telescopic rod (242) contacts the top wall inside the cylinder. At this time, the support block (93) is kept in a tight position against the inner wall of the pipe (01). S5. Start the rotating motor (22) to work. Under the rotation of the screw (221) and the limit of the inner wall of the traction seat (2), the drive block (21) drives the pipe (01), the inner abutment pipe (7) and the outer abutment block (8) to slide synchronously toward the cold drawing mold (3). The outer abutment block (8) slides along the inner wall of the traction seat (2) with the inner diameter gradually decreasing until the outer abutment block (8) clamps and positions the pipe (01) on the support block (93). S6. Start the hydraulic device (4). The piston rod of the hydraulic device (4) retracts, thereby pulling the traction seat (2) holding the pipe (01) to move synchronously along the track (11) until the traction seat (2) slides out of the extension range of the feeding rod (61). The pneumatic drive causes the feeding rod (61) to extend and be located below the pipe (01). S7. The traction seat (2) holds the end of the tube (01) and slides continuously until the tube (01) is removed from the cold drawing mold (3). Then the traction seat (2) releases the clamp on the tube (01) and the tube (01) falls onto the extended feeding rod (61). The pneumatic drive causes the feeding rod (61) to retract into the placement rack (6). Under the restriction of the limiting plate (62), the cold-drawn tube (01) is placed on several placement racks (6).

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