Cold heading equipment for titanium screw lightweight processing
By introducing bending detection and grinding components into the cold heading equipment, the problems of bending and uneven cross-section in titanium screw processing were solved, which improved the uniformity of stress on titanium bars and processing efficiency, and reduced the scrap rate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-27
- Publication Date
- 2026-04-07
AI Technical Summary
When processing titanium screws, existing cold heading equipment may cause the titanium wire to bend and have an uneven cross-section after being cut, resulting in eccentricity and non-uniform load on the titanium rod during cold heading, which can lead to scratches or jamming on the inner wall of the mold.
A cold heading device was designed, comprising a heading device, a conveying mechanism, a shearing mechanism, a bending detection mechanism, and a grinding component. The device uses a hydraulic cylinder to drive a slider and an extruder to detect the bending of titanium rods, rejects bent titanium rods, and grinds the end face of the titanium rods to ensure that the titanium rods are subjected to uniform stress before cold heading.
It effectively avoids wear and jamming of the mold inner wall caused by uneven force during the upsetting process of titanium rods, improves the efficiency and yield of cold upsetting, simplifies the equipment structure and improves the degree of automation.
Smart Images
Figure CN121797882A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of cold heading equipment, in particular to cold heading equipment for lightweight processing of titanium screws. BACKGROUND
[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 gradually replace traditional steel and stainless steel screws and become key basic components in high-end manufacturing fields due to their advantages of light weight, high strength, excellent corrosion resistance and wide temperature stability.
[0003] Cold heading forming is a mainstream process for processing screw heads, has the advantages of high material utilization rate, high production efficiency and the ability to retain metal flow lines to improve the strength of the workpiece, and has become a core process for batch production of titanium screws. Through the process, high pressure is applied to the titanium alloy bar by using a die at room temperature, so that the end of the bar is plastically deformed to form a screw head shape.
[0004] Before the cold heading processing of the titanium screw, the continuous titanium wire needs to be cut into a fixed-length bar. However, during the early rolling, drawing and winding process, residual stress will accumulate inside the titanium wire. Although the titanium wire will be straightened before cutting, the titanium has a high yield ratio and a large elastic interval, and the titanium wire may still bend after straightening, causing the titanium bar to rub excessively with the inner wall of the die during subsequent heading due to uneven stress, scratching the material of the inner wall of the die, or even getting stuck in the die. In addition, the flatness of the end surface of the titanium wire after cutting cannot be guaranteed, and plastic deformation may occur unevenly during heading, increasing the scrap rate. Therefore, the existing cold heading equipment needs to be improved. SUMMARY
[0005] The purpose of the present application is to solve the problem that the existing cold heading equipment may cause the titanium bar to be eccentric and unevenly loaded during cold heading when processing titanium screws, resulting in scratching of the inner wall of the die or even causing the titanium bar to be stuck in the die, and to provide a cold heading equipment for lightweight processing of titanium screws.
[0006] In order to achieve the above purpose, the application adopts the following technical solution: a cold heading equipment for lightweight processing of titanium screws, comprising a heading device and a conveying mechanism, a shearing mechanism is arranged between the heading device and the conveying mechanism, the shearing mechanism comprises a frame body fixed to one side of the heading device, a wheel frame is rotatably connected in 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 rotatably connected in the inside of the wheel frame, a shears seat and a reset lever are fixed on the inner wall of the frame body. It also includes a bending detection mechanism, the bending detection mechanism includes a hydraulic cylinder fixed on the bottom of the frame and a sliding frame, the inside of the sliding frame is slidably connected with a sliding block fixed with the telescopic end of the hydraulic cylinder, and the inside of the sliding frame is provided with a sliding part and an extrusion part; When the titanium rod is not bent, the hydraulic cylinder pushes the sliding block, drives the sliding part and the extrusion part to push the titanium rod, so that the two ends of the titanium rod respectively extend out from the two ends of the shears mold sleeve; when the titanium rod is bent, the sliding block drives the extrusion part to extrude the titanium rod from the shears mold sleeve.
[0007] As a further description of the above-mentioned technology, a cold heading equipment for lightweight processing of titanium screw: the sliding part includes a push plate slidably connected to the inside of the sliding frame, one side of the push plate is fixed with a connecting plate penetrating the sliding block, the other side of the push plate is fixed with a positioning plate, and the connecting plate is provided with an elastic pin.
[0008] As a further description of the above-mentioned technology, a cold heading equipment for lightweight processing of titanium screw: the extrusion part includes an outer tube slidably connected with the push plate and penetrating the sliding block, an inner shaft of the outer tube is slidably connected with a core rod, a supporting spring is arranged between the outer tube and the core rod, an inner radius of the outer tube is slidably connected with a clamping block, and one side of the sliding block is fixed with a toothed plate.
[0009] As a further description of the above-mentioned technology, a cold heading equipment for lightweight processing of titanium screw: the width of the positioning plate is consistent with the length of the titanium rod extending out of the shears mold sleeve, and the length of the core rod extending out of the outer tube is half of the width of the positioning plate.
[0010] As a further description of the above-mentioned technology, a cold heading equipment for lightweight processing of titanium screw: an electromagnet is fixedly installed in the inside of the outer tube, and a magnetic block is fixed in the inside of the core rod.
[0011] As a further description of the above-mentioned technology, a cold heading equipment for lightweight processing of titanium screw: one end of the outer tube close to the push plate is a circular truncated cone, and the diameter of the widest part is equal to the diameter of the inner wall of the shears mold sleeve.
[0012] As a further description of the above-mentioned technology, a cold heading equipment for lightweight processing of titanium screw: it also includes a polishing assembly, the polishing assembly includes a second motor fixedly installed on the inner wall of the frame, and the inside of the frame is rotatably connected with a polishing disc fixed with the driving shaft of the second motor.
[0013] As a further description of the above-mentioned technology, a cold heading equipment for lightweight processing of titanium screw: the polishing disc is provided with two and is arranged oppositely, and the inside of the frame is fixed with an arc-shaped plate.
[0014] As a further description of the above-mentioned technology, a cold heading equipment for lightweight processing of titanium screw: the shears mold sleeve is provided with a plurality of and is arranged equidistantly around the circumference of the wheel frame axis, and two of the shears mold sleeves are aligned with the shears seat and the outer tube at the same time.
[0015] As a further description of the above-mentioned technical cold heading equipment for lightweight processing of titanium screws, the inside of the frame body is fixed with a feeding pipe aligned with the shear seat.
[0016] In summary, due to the adoption of the above-mentioned technical cold heading equipment for lightweight processing of titanium screws, the present application has the following beneficial effects: 1. The hydraulic cylinder is elongated to drive the sliding block to push the sliding part, so that the extrusion part contacts and presses the titanium rod, and the friction between the titanium rod and the shear die sleeve is detected by the deformation of the supporting spring, so as to judge whether the titanium rod is bent according to the friction, so as to remove the bent titanium rod before cold heading, avoid local extrusion between the titanium rod and the inner wall of the die in the die during heading due to uneven force, cause the coating of the die inner wall to wear, even be stuck in the die to cause production stagnation, and the removed titanium rod can be re-straightened, reducing the scrap rate. The titanium rod exists bending, which hinders the movement of the core rod, so that the core rod extrudes the clamping block from the outer pipe, the hydraulic cylinder continues to elongate to drive the sliding block to push the clamping block, so that the outer pipe moves forward to push the titanium rod out of the shear die sleeve, realizing automatic removal of the bent titanium rod. This design combines the bending detection and removal of the titanium rod, without the need for additional driving structure and program, simplifying the structure while improving the automation degree, thereby helping to improve the cold heading processing efficiency.
[0017] 2. When the titanium rod does not exist bending, the sliding part and the extrusion part push the titanium rod, so that the two ends of the titanium rod are simultaneously extruded from the shear die sleeve, so that the grinding assembly can simultaneously grind the two ends of the titanium rod, improving the grinding efficiency, and after the end face of the titanium rod is ground by the grinding assembly, the uniformity of the force during the heading of the titanium rod can be improved, thereby improving the cold heading processing effect. Furthermore, by limiting the width of the positioning plate and the extension length of the core rod, the lengths of the two ends of the titanium rod extruded from the shear die sleeve are consistent, balancing the stress during the grinding of the titanium rod.
[0018] 3. By using multiple shear die sleeves in a cycle, the titanium rod bending detection and removal, titanium wire feeding and titanium rod end face grinding can be performed simultaneously, thereby improving the cold heading processing effect without affecting the cold heading processing efficiency as much as possible. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 The overall schematic diagram according to the present application is shown; Figure 2 The hydraulic cylinder schematic diagram according to the present application is shown; Figure 3 The shear mechanism schematic diagram according to the present application is shown; Figure 4 The sliding frame position relationship schematic diagram according to the present application is shown; Figure 5The shears die sleeve according to the present application is shown in the schematic view; Figure 6 The shears die sleeve according to the present application is shown in the schematic view; Figure 5 The enlarged view at A in the present application is shown in the schematic view; Figure 7 The shears die sleeve according to the present application is shown in the schematic view; Figure 8 The slide assembly according to the present application is shown in the schematic view; Figure 9 The slide assembly according to the present application is shown in the schematic view; Figure 10 The extrusion assembly according to the present application is shown in the schematic view; Figure 11 The shears die sleeve according to the present application is shown in the schematic view; Figure 10 The enlarged view at B in the present application is shown in the schematic view; Figure 12 The positioning plate according to the present application is shown in the schematic view; Figure 13 The shears die sleeve according to the present application is shown in the schematic view; Figure 12 The enlarged view at C in the present application is shown in the schematic view.
[0020] Legend: 10, upsetting device; 11, conveying mechanism; 20, shearing mechanism; 21, frame body; 22, motor one; 23, wheel frame; 24, shears die sleeve; 25, shears seat; 26, feeding pipe; 27, reset push plate; 30, bending detection mechanism; 31, hydraulic cylinder; 32, slide frame; 33, slide block; 34, sliding piece; 341, push plate; 342, connecting plate; 343, elastic pin; 344, positioning plate; 35, extrusion piece; 351, outer pipe; 352, core rod; 353, supporting spring; 354, clamping block; 355, toothed plate; 361, electromagnet; 362, magnetic block; 40, polishing assembly; 41, motor two; 42, polishing disc; 43, arc-shaped plate. DETAILED DESCRIPTION
[0021] The titanium screw lightweight processing cold upsetting equipment in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0022] As Figures 1-13As shown, the application provides a cold heading equipment for titanium screw lightweight processing: it comprises a heading device 10 and a conveying mechanism 11, a shearing mechanism 20 is arranged 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 titanium wire is cut into titanium rods of equal length by the shearing mechanism 20, and then the heading device 10 is used for cold heading processing of the titanium rods to make the end of the titanium rod plastically deform and form a screw head shape.
[0023] The shearing mechanism 20 comprises a frame 21 fixed to one side of the shell of the heading device 10, a wheel frame 23 rotatably connected in the inside of the frame 21, a motor one 22 fixedly installed in the inside of the frame 21, a driving shaft of the motor one 22 fixed with the wheel frame 23, a shears mold sleeve 24 rotatably connected in the inside of the wheel frame 23, the shears mold sleeve 24 is provided with a plurality of shears mold sleeves 24 and is arranged at equal intervals around the axis of the wheel frame 23, a shears seat 25 is fixed to the inner wall of the frame 21, and a feeding pipe 26 aligned with the shears seat 25 is fixed in the inside of the frame 21.
[0024] One of the shears mold sleeves 24 is aligned with the shears seat 25, under the conveying of the conveying mechanism 11, the titanium wire passes through the shears seat 25 and the shears mold sleeve 24, then the motor one 22 drives the wheel frame 23 to rotate, the shears mold sleeve 24 is staggered with the shears seat 25, the titanium wire is cut off from the connection between the two, the conveying mechanism 11 intermittently conveys the titanium wire at equal intervals, so that the continuous titanium wire is cut into titanium rods of equal length; The end of the cut-off titanium rod away from the shears seat 25 extends out of the shears mold sleeve 24, the other end is flush with the end face of the shears mold sleeve 24, after the motor one 22 drives the wheel frame 23 and the shears mold sleeve 24 to rotate for one circle, the titanium wire conveyed by the conveying mechanism 11 again can push the titanium rod in the shears mold sleeve 24 into the feeding pipe 26, the titanium rod in the feeding pipe 26 advances one working position distance in turn, so that the heading device 10 can continuously process the titanium rod.
[0025] Reference Figures 7-13 In order to remove the bent titanium rod before cold heading, avoid uneven force on the titanium rod during heading and local extrusion with the inner wall of the mold in the heading device 10, cause the coating of the inner wall of the mold to wear, even stuck in the mold to cause production stoppage, a bending detection mechanism 30 is arranged; The bending detection mechanism 30 comprises a hydraulic cylinder 31 fixed to the bottom of the frame 21 and a sliding frame 32, a sliding block 33 fixed with the extension end of the hydraulic cylinder 31 is slidably connected in the inside of the sliding frame 32, a sliding part 34 and an extrusion part 35 are arranged in the inside of the sliding frame 32.
[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). 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, The sliding member (34) includes a push plate (341) slidably connected inside the slide frame (32). A connecting plate (342) that passes through 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).
3. The cold heading equipment for lightweight machining of titanium screws according to claim 2, characterized in that, The extruder (35) includes an outer tube (351) that is slidably connected to the push plate (341) and passes through 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).
4. The cold heading equipment for lightweight machining of titanium screws according to claim 3, characterized in that, The width of the positioning plate (344) is the same as the length of the titanium rod extending from the scissor 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).
5. The cold heading equipment for lightweight machining of titanium screws according to claim 3, 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).
6. The cold heading equipment for lightweight machining of titanium screws according to claim 3, 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).
7. 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).
8. The cold heading equipment for lightweight machining of titanium screws according to claim 7, 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).
9. A cold heading machine 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).
10. A cold heading machine 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.