A cold heading device for lightweight processing of titanium screws

Abstract

The application discloses a cold upsetting equipment for titanium screw lightweight processing and relates to the technical field of cold upsetting equipment, which comprises an upsetting device and a conveying mechanism, a shearing mechanism is arranged between the upsetting device and the conveying mechanism, the shearing mechanism comprises a frame body fixed to one side of the upsetting device, a wheel frame is rotationally connected to the inside of the frame body, a motor one for driving the wheel frame to rotate is fixedly installed in the inside of the frame body, a shears mold sleeve is rotationally connected to the inside of the wheel frame, a shears seat and a reset lever are fixed to the inner wall of the frame body, the hydraulic cylinder is elongated to drive the sliding block to push the sliding part, the extrusion part is contacted with the titanium rod and is pressed, the friction force between the titanium rod and the shears mold sleeve is detected by means of the deformation of the supporting spring, whether the titanium rod is bent is judged according to the friction force, the bent titanium rod is removed before cold upsetting, local extrusion of the titanium rod with the inner wall of the mold during upsetting is avoided, the coating of the inner wall of the mold is prevented from being abraded, and even the titanium rod is prevented from being stuck in the mold to cause production stagnation.

Description

Technical Field

[0001] This invention relates to the field of cold heading equipment technology, and in particular to a cold heading equipment for lightweight processing of titanium screws. Background Technology

[0002] With the rapid development of aerospace, medical devices, high-end chemicals, and new energy vehicles, the comprehensive performance of fasteners is facing increasingly stringent requirements. Titanium screws, with their advantages of being lightweight yet strong, possessing excellent corrosion resistance and wide temperature range stability, are gradually replacing traditional steel and stainless steel screws, becoming a key basic component in high-end manufacturing.

[0003] Cold heading, as the mainstream process for machining screw heads, has advantages such as high material utilization, high production efficiency, and the ability to retain metal streamlines to improve workpiece strength. It has become a core process in the mass production of titanium screws. This process involves applying high pressure to titanium alloy bars at room temperature using a mold, causing plastic deformation at the ends of the bars to form the screw head shape.

[0004] Before cold heading titanium screws, continuous titanium wire must first be cut into fixed-length bars. However, during the initial rolling, drawing, and winding processes, residual stress accumulates inside the titanium wire. Although the wire is straightened before cutting, titanium's high yield ratio and large elastic range mean that elastic recovery is likely after straightening, causing the wire to bend even after cutting. This can lead to uneven stress and excessive friction between the titanium bar and the inner wall of the die during subsequent heading, scratching the die material or even causing it to jam inside the die. In addition, the flatness of the cut end face of the titanium wire is difficult to guarantee, which can easily cause uneven plastic deformation during heading, increasing the scrap rate. Therefore, improvements to existing cold heading equipment are necessary. Summary of the Invention

[0005] The purpose of this invention is to solve the problem that when processing titanium screws with existing cold heading equipment, the titanium wire may be bent and the cross-section of the resulting bar may be uneven, which may induce eccentricity and non-uniform load during cold heading, resulting in scratches on the inner wall of the mold or even the titanium bar getting stuck in the mold. Therefore, this invention proposes a cold heading equipment for lightweight processing of titanium screws.

[0006] To achieve the above objectives, the present invention employs the following technology: a cold heading device for lightweight processing of titanium screws, comprising a heading device and a conveying mechanism, wherein a shearing mechanism is provided between the heading device and the conveying mechanism, the shearing mechanism comprising a frame fixed to one side of the heading device, a wheel frame rotatably connected inside the frame, a motor for driving the wheel frame to rotate fixedly installed inside the frame, a scissor die sleeve rotatably connected inside the wheel frame, and a scissor seat and a reset plate fixed on the inner wall of the frame; It also includes a bending detection mechanism, which includes a hydraulic cylinder and a slide frame fixed to the bottom of the frame. The slide frame has a slider that is fixed to the telescopic end of the hydraulic cylinder. The slide frame is provided with a sliding component and an extrusion component. When the titanium rod is not bent, the hydraulic cylinder pushes the slider, which in turn drives the sliding component and the extruder to push the titanium rod so that both ends of the titanium rod extend equidistantly from both ends of the scissor die sleeve; when the titanium rod is bent, the slider drives the extruder to extrude the titanium rod from the scissor die sleeve.

[0007] As a further description of the above-mentioned cold heading equipment for lightweight processing of titanium screws: the sliding member includes a push plate slidably connected inside the slide frame, a connecting plate that passes through the slider is fixed on one side of the push plate, a positioning plate is fixed on the other side of the push plate, and an elastic pin is installed on the connecting plate.

[0008] As a further description of the above-mentioned lightweight titanium screw cold heading equipment: the extruder includes an outer tube that is slidably connected to the push plate and passes through the slider, a core rod is axially slidably connected inside the outer tube, a support spring is provided between the outer tube and the core rod, a locking block is radially slidably connected inside the outer tube, and a toothed plate is fixed on one side of the slider.

[0009] As a further description of the cold heading equipment for lightweight processing of titanium screws mentioned above: the width of the positioning plate is consistent with the length of the titanium rod extending from the scissor die sleeve, and the length of the core rod extending from the outer tube is half the width of the positioning plate.

[0010] As a further description of the cold heading equipment for lightweight processing of titanium screws mentioned above: an electromagnet is fixedly installed inside the outer tube, and a magnetic block is fixed inside the core rod.

[0011] As a further description of the cold heading equipment for lightweight processing of titanium screws mentioned above: the end of the outer tube near the push plate is frustum-shaped, and the diameter at its widest point is equal to the diameter of the inner wall of the shear die sleeve.

[0012] As a further description of the above-mentioned lightweight titanium screw cold heading equipment, it also includes a grinding assembly, which includes a second motor fixedly installed on the inner wall of the frame, and a grinding disc fixed to the drive shaft of the second motor is rotatably connected inside the frame.

[0013] As a further description of the cold heading equipment for lightweight processing of titanium screws mentioned above: two grinding discs are provided and arranged opposite to each other, and an arc-shaped plate is fixed inside the frame.

[0014] As a further description of the cold heading equipment for lightweight processing of titanium screws mentioned above: multiple scissor die sleeves are provided and are equidistantly arranged around the axis of the wheel frame, wherein two of the scissor die sleeves are simultaneously aligned with the scissor seat and the outer tube.

[0015] As a further description of the cold heading equipment for lightweight processing of titanium screws described above: a feeding pipe aligned with the scissor seat is fixed inside the frame.

[0016] In summary, due to the adoption of the above-mentioned technology in the cold heading equipment for lightweight machining of titanium screws, the beneficial effects of this invention are: 1. This invention uses a hydraulic cylinder to extend and drive a slider to push a sliding component, so that the extruded part contacts and presses against the titanium rod. The friction between the titanium rod and the scissor die sleeve is detected by the deformation of the support spring. The magnitude of the friction is used to determine whether the titanium rod is bent, so that the bent titanium rod can be removed before cold heading. This avoids uneven force on the titanium rod during heading, which can cause local compression between the titanium rod and the inner wall of the die inside the heading device, resulting in wear of the inner wall coating of the die, or even jamming inside the die and causing production stoppage. Furthermore, the removed titanium rod can be straightened again, reducing the scrap rate. The bending of the titanium rod hinders the movement of the mandrel. After the support spring is compressed, the mandrel pushes the locking block out of the outer tube. The hydraulic cylinder continues to extend, driving the slider to push the locking block, which in turn moves the outer tube forward and pushes the titanium rod out of the scissor die sleeve, thus achieving automatic rejection of the bent titanium rod. This design combines the detection and rejection of the bent titanium rod without the need for additional drive structures and programs. It simplifies the structure and improves the degree of automation, thereby helping to improve the efficiency of cold heading.

[0017] 2. When the titanium rod is not bent, the present invention pushes the titanium rod through the sliding member and the extruder, so that both ends of the titanium rod extend from the scissor die sleeve at the same time. This allows the grinding component to grind both ends of the titanium rod at the same time, improving grinding efficiency. After the end face of the titanium rod is ground flat by the grinding component, the uniformity of force during the upsetting of the titanium rod can be improved, thereby improving the cold upsetting effect. Moreover, by limiting the width of the positioning plate and the extension length of the core rod, the two ends of the titanium rod can be made to extend from the scissor die sleeve at the same length, balancing the force on the titanium rod during grinding.

[0018] 3. By using multiple scissor dies in a cycle, the bending detection and rejection of titanium rods, the feeding of titanium wires, and the grinding of the end face of titanium rods can be carried out simultaneously, thereby improving the cold heading effect without affecting the efficiency of cold heading as much as possible. Attached Figure Description

[0019] Figure 1 An overall schematic diagram according to the present invention is shown; Figure 2 A schematic diagram of a hydraulic cylinder according to the present invention is shown; Figure 3 A schematic diagram of the shearing mechanism according to the present invention is shown; Figure 4 A schematic diagram of the sliding frame position relationship according to the present invention is shown; Figure 5A schematic diagram of the scissor sleeve according to the present invention is shown; Figure 6 The present invention is shown Figure 5 Enlarged view of point A in the middle; Figure 7 A schematic cross-sectional view of the scissor seat according to the present invention is shown; Figure 8 A schematic diagram of the sliding component according to the present invention is shown; Figure 9 A schematic cross-sectional view of the slider according to the present invention is shown; Figure 10 A schematic diagram of an extrusion assembly according to the present invention is shown; Figure 11 The present invention is shown Figure 10 Enlarged view at point B in the middle; Figure 12 A schematic diagram of the positioning plate according to the present invention is shown; Figure 13 The present invention is shown Figure 12 Enlarged view of point C in the middle.

[0020] Legend: 10. Upsetting device; 11. Conveying mechanism; 20. Shearing mechanism; 21. Frame; 22. Motor 1; 23. Wheel frame; 24. Scissor die sleeve; 25. Scissor seat; 26. Feeding pipe; 27. Reset plate; 30. Bending detection mechanism; 31. Hydraulic cylinder; 32. Slide frame; 33. Slider; 34. Sliding component; 341. Push plate; 342. Connecting plate; 343. Elastic pin; 344. Positioning plate; 35. Extruded part; 351. Outer tube; 352. Core rod; 353. Support spring; 354. Locking block; 355. Toothed plate; 361. Electromagnet; 362. Magnetic block; 40. Grinding assembly; 41. Motor II; 42. Grinding disc; 43. Curved plate. Detailed Implementation

[0021] The following will describe clearly and completely a cold heading device for lightweight titanium screw processing according to the embodiments of the present invention 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] like Figures 1-13As shown, the present invention provides a cold heading device for lightweight processing of titanium screws: including a heading device 10 and a conveying mechanism 11, a shearing mechanism 20 is provided between the heading device 10 and the conveying mechanism 11, the conveying mechanism 11 conveys the straightened titanium wire to the shearing mechanism 20, the shearing mechanism 20 cuts the titanium wire into titanium rods of equal length, and then the heading device 10 performs cold heading processing on the titanium rods, so that the ends of the titanium rods undergo plastic deformation to form the shape of screw heads.

[0023] The shearing mechanism 20 includes a frame 21 fixed to one side of the housing of the upsetting device 10. A wheel frame 23 is rotatably connected inside the frame 21. A motor 22 is fixedly installed inside the frame 21. The drive shaft of the motor 22 is fixed to the wheel frame 23. A scissor die sleeve 24 is rotatably connected inside the wheel frame 23. Multiple scissor die sleeves 24 are provided and are equidistantly arranged around the axis of the wheel frame 23. A scissor seat 25 is fixed to the inner wall of the frame 21. A feeding pipe 26 aligned with the scissor seat 25 is fixed inside the frame 21.

[0024] After one of the shear die sleeves 24 is aligned with the shear seat 25, the titanium wire passes through the shear seat 25 and the shear die sleeve 24 under the conveying mechanism 11. Then, the motor 22 drives the wheel frame 23 to rotate, so that the shear die sleeve 24 and the shear seat 25 are staggered, and the titanium wire is cut off at the connection between the two. The conveying mechanism 11 intermittently conveys the titanium wire at equal intervals, so that the continuous titanium wire can be cut into titanium rods of equal length. One end of the cut titanium rod, away from the scissor holder 25, extends out of the scissor die sleeve 24, while the other end is flush with the end face of the scissor die sleeve 24. After the motor 22 drives the wheel frame 23 and the scissor die sleeve 24 to rotate one revolution, the titanium wire is fed again through the conveying mechanism 11, which can push the titanium rod inside the scissor die sleeve 24 into the feeding tube 26. The titanium rod in the feeding tube 26 advances one station distance in sequence, so that the upsetting device 10 can continuously process the titanium rod.

[0025] Reference Figures 7-13 In order to remove bent titanium bars before cold heading and to prevent uneven stress on the titanium bars during heading and local compression with the inner wall of the mold inside the heading device 10, which would cause wear on the coating of the inner wall of the mold or even jamming inside the mold and cause production to stop, a bending detection mechanism 30 is provided. The bending detection mechanism 30 includes a hydraulic cylinder 31 and a slide frame 32 fixed to the bottom of the frame 21. The slide frame 32 has a slider 33 that is fixed to the telescopic end of the hydraulic cylinder 31. The slide frame 32 is provided with a sliding member 34 and an extruder 35.

[0026] The sliding member 34 includes a push plate 341 slidably connected inside the slide frame 32. A connecting plate 342, penetrating the slider 33, is fixed to the side of the push plate 341 near the slider 33. A positioning plate 344 is fixed to the side of the push plate 341 near the wheel frame 23. An elastic pin 343 is installed on the connecting plate 342. To ensure force balance, two connecting plates 342 and two positioning plates 344 are provided and arranged symmetrically. Figure 12 In the state shown, the push plate 341 cannot slide towards the hydraulic cylinder 31 due to the limitation of the inner wall baffle of the slide frame 32. The extruder 35 includes an outer tube 351 that is slidably connected to the pusher plate 341 and passes through a circular hole in the middle of the slider 33. The slider 33 has balls inside, which contact the outer tube 351 to reduce friction between them. A core rod 352 is axially slidably connected inside the outer tube 351. Figure 12 In the indicated state, the core rod 352 can only slide relative to the outer tube 351 in the direction of the hydraulic cylinder 31. One end of the core rod 352 near the wheel frame 23 extends out from inside the outer tube 351. A support spring 353 is provided between the outer tube 351 and the core rod 352. A locking block 354 is radially slidably connected inside the outer wall of the outer tube 351. Two locking blocks 354 are provided and arranged symmetrically. A toothed plate 355 is fixed on the side of the slider 33 near the push plate 341. The side of the locking block 354 near the toothed plate 355 is provided with hook teeth that can match the toothed plate 355.

[0027] When the titanium rod is not bent, the friction between the scissor die sleeve 24 and the titanium rod is small. At this time, the hydraulic cylinder 31 extends to push the slider 33. The slider 33 drives the connecting plate 342, the push plate 341 and the positioning plate 344 to move in the direction of the wheel frame 23 through the elastic pin 343 until the positioning plate 344 contacts the wheel frame 23. During this process, the push plate 341 drives the outer tube 351 to move together. The outer tube 351 drives the core rod 352 to move through the support spring 353, so that the core rod 352 pushes the titanium rod. Since the friction between the scissor die sleeve 24 and the titanium rod is small, the support spring 353 is not compressed when the core rod 352 pushes the titanium rod. The width of the positioning plate 344 is the same as the length of the titanium rod extending from the scissor die sleeve 24, and the length of the core rod 352 extending from the outer tube 351 is half the width of the positioning plate 344. Therefore, after the positioning plate 344 contacts the wheel frame 23, the core rod 352 will push the titanium rod to move a distance of half the width of the positioning plate 344, that is, half the length of the titanium rod extending from the scissor die sleeve 24, so that the lengths of the two ends of the titanium rod extending from the scissor die sleeve 24 are the same, so that the end faces of the two ends of the titanium rod can be ground flat at the same time in the future.

[0028] A reset plate 27 is fixed on the inner wall of the frame 21. The reset plate 27 is located above the scissor seat 25. Before the scissor die sleeve 24 rotates one revolution with the wheel frame 23 and realigns with the scissor seat 25, the inclined surface of the reset plate 27 pushes the titanium rod, which can restore the alignment between the end of the titanium rod near the scissor seat 25 and the end face of the scissor die sleeve 24, so as to facilitate subsequent feeding.

[0029] When the titanium rod bends, the friction between it and the inner wall of the scissor die sleeve 24 is relatively large. The push plate 341 drives the outer tube 351, the support spring 353, and the core rod 352 to move. When the core rod 352 pushes the titanium rod, the friction between the titanium rod and the scissor die sleeve 24 hinders the core rod 352 from pushing the titanium rod, causing the support spring 353 to be compressed. The core rod 352 moves relative to the outer tube 351 towards the direction of the slider 33, and the inclined plane squeezes the locking block 354 out of the outer tube 351. The locking block 354 moves radially along the outer tube 351 and extends out of the outer tube 351. The slider 33 then... Continue moving towards the wheel frame 23. At this point, blocked by the wheel frame 23, the positioning plate 344, push plate 341, and connecting plate 342 can no longer be pushed. The elastic pin 343 will be compressed by the slider 33, causing the slider 33 and the connecting plate 342 to slide. Then, the slider 33 drives the toothed plate 355 to engage with the hook teeth of the locking block 354. The slider 33 continues to move and pushes the locking block 354, causing the outer tube 351, support spring 353, and core rod 352 to move towards the wheel frame 23, so that the outer tube 351 and core rod 352 push the titanium rod out from inside the scissor die sleeve 24.

[0030] During the process of bending the titanium rod out of the scissor die sleeve 24, the friction between the titanium rod and the scissor die sleeve 24 is constantly changing. The toothed plate 355 and the hook teeth of the locking block 354 are engaged to prevent the supporting spring 353 from driving the core rod 352 to reset during the process, causing the locking block 354 to retract under the elastic force.

[0031] When the hydraulic cylinder 31 retracts, it drives the slider 33 to move, such as Figure 9 As shown, a stop is provided on the end cap of the outer tube 351 near the slider 33. When the slider 33 is reset, it pushes the stop on the end cap to drive the outer tube 351 to reset together. The outer tube 351 drives the core rod 352 to reset together through the support spring 353. After the slider 33 contacts the elastic pin 343, the elastic pin 343 drives the connecting plate 342, the push plate 341 and the positioning plate 344 to move and reset. After the push plate 341 is reset, its movement is restricted by the inner wall baffle of the slide frame 32. Then the slider 33 is compressed and passes over the elastic pin 343 to achieve reset.

[0032] Based on the above design, the bending detection mechanism 30 can detect titanium bars with a predetermined degree of bending after the titanium bars are cut off, and push the bent titanium bars out of the scissor die sleeve 24. This avoids uneven force during the upsetting of the titanium bars, which can lead to wear of the coating on the inner wall of the die or even jamming. This ensures continuous processing of the upsetting device 10 while reducing the scrap rate.

[0033] It is worth mentioning that two of the shear die sleeves 24 inside the wheel frame 23 are aligned with the shear seat 25 and the outer tube 351, so that the operation of the bending detection mechanism 30 can be synchronized with the feeding of the conveying mechanism 11, thereby improving production efficiency; the frame 21 is made of high-strength aluminum alloy to reduce the overall weight of the equipment and achieve lightweighting, and the outer shell of the upsetting device 10 is also made of aluminum alloy.

[0034] Reference Figure 12 and Figure 13 An electromagnet 361 is fixedly installed inside the outer tube 351, and a magnetic block 362 is fixedly installed inside the core rod 352. When the electromagnet 361 is energized, the magnetic block 362 can be directly attracted by magnetic force, which drives the core rod 352 to move towards the locking block 354. Then, the core rod 352 pushes the locking block 354 out of the outer tube 351 through the inclined plane. During the process of the hydraulic cylinder 31 extending and driving the slider 33 to move towards the slide frame 32, the locking block 354 can be directly pushed to drive the outer tube 351 to move. The end of the outer tube 351 near the push plate 341 is frustum-shaped, and the diameter of the widest part is equal to the diameter of the inner wall of the scissor die sleeve 24. By inserting the outer tube 351 into the scissor die sleeve 24, the scissor die sleeve 24 can be positioned, and the position calibration of the wheel frame 23 before starting the machine can be completed.

[0035] Reference Figure 5 and Figure 6 The device is equipped with a grinding assembly 40, which includes a second motor 41 fixedly installed on the inner wall of the frame 21. A grinding disc 42 is rotatably connected inside the frame 21 and fixed to the drive shaft of the second motor 41. There are two grinding discs 42 arranged opposite each other. The distance between the two grinding discs 42 is 0.5mm-1mm shorter than the length of the titanium rod. When the wheel frame 23 and the scissor die sleeve 24 drive the titanium rod through the space between the two grinding discs 42, the second motor 41 drives the grinding discs 42 to rotate, which can grind both ends of the titanium rod at the same time, ensuring that the end face of the titanium rod is flat before upsetting, improving the uniformity of force during upsetting, and thus improving the effect of cold upsetting.

[0036] An arc-shaped plate 43 is fixed inside the frame 21. The arc-shaped plate 43 is located between two grinding discs 42. When the shear die sleeve 24 passes between the two grinding discs 42, it will contact the arc-shaped plate 43 together with the titanium rod. When the wheel frame 23 drives the shear die sleeve 24 and the titanium rod to rotate in a circle, the shear die sleeve 24 and the titanium rod will rotate on the arc-shaped plate 43. This design not only improves the uniformity of grinding the end face of the titanium rod, but also switches the position before the shear die sleeve 24 cuts the titanium wire each time, avoiding local wear and reducing the cutting accuracy. An exhaust pipe is connected to the frame 21 near the grinding disc 42. The exhaust pipe is connected to an external wet dust collector to remove debris generated during the grinding process.

[0037] Working principle: The titanium wire is conveyed to the scissor holder 25 by the conveying mechanism 11, and the titanium wire passes through the scissor die sleeve 24 aligned with the scissor holder 25, so that the titanium wire extends 1cm-2cm from the end of the scissor die sleeve 24. The starting motor 22 drives the wheel frame 23 and the scissor die sleeve 24 to rotate. The scissor die sleeve 24 and the scissor seat 25 interlock to cut the titanium wire. After the titanium wire is cut, one end of the titanium rod formed is flush with the end face of the scissor die sleeve 24, and the other end extends out of the scissor die sleeve 24. Each rotation of the wheel frame 23 aligns one scissor die sleeve 24 with the scissor seat 25, enabling the conveying mechanism 11 to continuously feed material. While the conveying mechanism 11 is feeding material, the bottommost scissor die sleeve 24 aligns with the outer tube 351. The hydraulic cylinder 31 extends to push the slider 33. The slider 33 pushes the connecting plate 342, the push plate 341, and the positioning plate 344 to move through the elastic pin 343. The push plate 341 drives the outer tube 351 to move in the same direction. The outer tube 351 drives the core rod 352 to move through the support spring 353. When the titanium rod is not bent, the friction between the scissor die sleeve 24 and the titanium rod is small. During the process of the positioning plate 344 moving to contact the wheel frame 23, the core rod 352 pushes the titanium rod, and the support spring 353 is not compressed, so that the other end of the titanium rod extends out of the scissor die sleeve 24. When the titanium rod is bent, the friction between it and the inner wall of the scissor die sleeve 24 is relatively large. At this time, when the core rod 352 pushes the titanium rod, the support spring 353 is compressed. The core rod 352 moves relative to the outer tube 351 towards the direction of the slider 33, and the inclined plane pushes the locking block 354 out of the outer tube 351. The locking block 354 moves radially along the outer tube 351 and extends out of the outer tube 351. The slider 33 continues to move towards the wheel frame 23. Under the obstruction of the wheel frame 23, the positioning plate 344 and the push plate... 341 and connecting plate 342 can no longer be pushed. The elastic pin 343 will be pressed into the connecting plate 342 by the slider 33, so that the slider 33 and the connecting plate 342 slide. Then the slider 33 drives the toothed plate 355 to engage with the hook teeth of the locking block 354. The slider 33 continues to move and pushes the locking block 354, which drives the outer tube 351, the support spring 353 and the core rod 352 to move toward the wheel frame 23, so that the outer tube 351 and the core rod 352 push the titanium rod out from the inside of the scissor die sleeve 24. After inspection, the unbent titanium rod remains in the scissor die sleeve 24. The wheel frame 23 drives the scissor die sleeve 24 to make a circular motion so that the titanium rod passes through the grinding component 40 and the end face is ground flat. Then the titanium rod passes through the reset plate 27. With the help of the inclined surface of the reset plate 27, the titanium rod is pushed back into the scissor die sleeve 24. The end of the titanium rod near the scissor seat 25 is flush with the scissor die sleeve 24. After the scissor die sleeve 24 is re-aligned with the scissor seat 25, the conveying mechanism 11 conveys titanium wire to push the titanium rod into the feeding tube 26. The titanium rod in the feeding tube 26 advances one station distance in sequence, so that the upsetting device 10 can continuously process the titanium rod.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the present invention's technology and the inventive concept of a cold heading device for lightweight processing of titanium screws, should be covered within the scope of protection of the present invention.

Claims

1. A cold heading device for lightweight processing of titanium screws, comprising a heading device (10) and a conveying mechanism (11), wherein a shearing mechanism (20) is provided between the heading device (10) and the conveying mechanism (11), characterized in that, The shearing mechanism (20) includes a frame (21) fixed to one side of the upsetting device (10), a wheel frame (23) is rotatably connected inside the frame (21), a motor (22) for driving the wheel frame (23) to rotate is fixedly installed inside the frame (21), a scissor die sleeve (24) is rotatably connected inside the wheel frame (23), and a scissor seat (25) and a reset plate (27) are fixed on the inner wall of the frame (21). It also includes a bending detection mechanism (30), which includes a hydraulic cylinder (31) and a slide frame (32) fixed to the bottom of the frame (21). The slide frame (32) is slidably connected to a slider (33) fixed to the telescopic end of the hydraulic cylinder (31). The slide frame (32) is provided with a sliding member (34) and an extruder (35). The sliding member (34) includes a push plate (341) slidably connected inside the slide frame (32). A connecting plate (342) penetrating the slider (33) is fixed on one side of the push plate (341), and a positioning plate (344) is fixed on the other side of the push plate (341). An elastic pin (343) is installed on the connecting plate (342). The extruder (35) includes an outer tube (351) slidably connected to the push plate (341) and penetrating the slider (33). A core rod (352) is axially slidably connected inside the outer tube (351). A support spring (353) is provided between the outer tube (351) and the core rod (352). A locking block (354) is radially slidably connected inside the outer tube (351). A toothed plate (355) is fixed on one side of the slider (33). The width of the positioning plate (344) is consistent with the length of the titanium rod extending out of the scissor die sleeve (24), and the length of the core rod (352) extending out of the outer tube (351) is half the width of the positioning plate (344). The inclined surface of the core rod (352) can squeeze the locking block (354) out of the outer tube (351). When the titanium rod is not bent, the hydraulic cylinder (31) pushes the slider (33), which drives the slider (34) and the extruder (35) to push the titanium rod so that the two ends of the titanium rod extend from the two ends of the scissor die sleeve (24) at equal distances; when the titanium rod is bent, the slider (33) drives the extruder (35) to extrude the titanium rod from the scissor die sleeve (24).

2. The cold heading equipment for lightweight machining of titanium screws according to claim 1, characterized in that, An electromagnet (361) is fixedly installed inside the outer tube (351), and a magnetic block (362) is fixedly installed inside the core rod (352).

3. The cold heading equipment for lightweight machining of titanium screws according to claim 1, characterized in that, The outer tube (351) is frustum-shaped at the end near the push plate (341), and the diameter at its widest point is equal to the inner diameter of the shear die sleeve (24).

4. The cold heading equipment for lightweight machining of titanium screws according to claim 1, characterized in that, It also includes a polishing assembly (40), which includes a second motor (41) fixedly installed on the inner wall of the frame (21), and a polishing disc (42) fixed to the drive shaft of the second motor (41) is rotatably connected inside the frame (21).

5. The cold heading equipment for lightweight machining of titanium screws according to claim 4, characterized in that, Two grinding discs (42) are provided and arranged opposite to each other, and an arc plate (43) is fixed inside the frame (21).

6. The cold heading equipment for lightweight machining of titanium screws according to claim 3, characterized in that, Multiple scissor mold sleeves (24) are provided and are equidistantly arranged around the axis of the wheel frame (23), wherein two of the scissor mold sleeves (24) are simultaneously aligned with the scissor seat (25) and the outer tube (351).

7. The cold heading equipment for lightweight machining of titanium screws according to claim 1, characterized in that, The frame (21) has a feeding tube (26) that is aligned with the scissor seat (25) inside.

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