Finish drawing equipment for yellow filament production and filament drawing method thereof

Abstract

The invention discloses finish broaching equipment for yellow wire production and a wire drawing method of the finish broaching equipment. The finish broaching equipment comprises a machine shell, a straightening device arranged at the top of the machine shell, a wire drawing die and yellow wire finish broaching equipment located beside the wire drawing die. The finish broaching equipment for yellow wire production further comprises a flattening mechanism and a wire penetrating guide mechanism. The straightening device comprises a setting plate arranged on the top of the machine shell. The flattening mechanism is arranged beside the setting plate; the threading guide mechanism is arranged on the side of the setting plate; the wire threading guide mechanism comprises a guide part, a mounting plate, a limiting part and a clamping part, and the device solves the problem that in traditional manual wire threading, a wire port and the inner wall of an opening of a wire drawing die are prone to rigid rubbing; and the effects of reducing the replacement frequency of the wire drawing die, reducing the production cost, improving the production efficiency and avoiding scratches on the surface of the yellow wire, out-of-tolerance of the diameter and other waste products in the subsequent finish drawing process caused by rubbing deformation of the wire port are achieved.

Description

Technical Field

[0001] This invention relates to the field of fine drawing technology for yellow silk, and more specifically, to a fine drawing device and a drawing method for producing yellow silk. Background Technology

[0002] In the precision drawing process of wires, such as high-purity metal wires, alloy wires, or special functional wires, the drawing die is the core forming tool, and its performance directly determines the surface quality and dimensional accuracy of the wire.

[0003] The core of this process is to use a wire drawing die to plastically deform and reduce the diameter of the pre-treated wire so that the wire meets the preset diameter tolerance requirements, which usually need to be controlled within ±0.01mm. As a key consumable in the precision drawing process, the smoothness and dimensional accuracy of the inner wall of the die hole, especially the transition area between the entrance conical opening and the central circular diameter hole, directly affect the quality of the precision drawing of the wire. Moreover, wire drawing dies are mostly made of hard alloy or artificial diamond materials, which are expensive to replace.

[0004] Currently, in the production of high-precision drawing of yellow wire, the threading operation before the wire enters the drawing die is still mainly done manually. This requires two workers: one pulls the wire at the feed end of the drawing equipment, passing it through a straightening device and a surface treatment mechanism, then aligns the wire end with the conical opening at the drawing die's entrance based on experience; the other worker uses pliers or other tools at the discharge end of the drawing equipment to hold the wire end and attempt to pull it into the circular diameter hole area of ​​the drawing die. However, this manual threading method has significant drawbacks and cannot meet the efficiency and quality requirements of continuous industrial production.

[0005] On the one hand, manual wire threading lacks a stable guiding and positioning structure. Workers rely solely on vision and touch to align the wire drawing die opening, which can easily lead to operational deviations. This often results in the wire end having residual microburrs or slight bends after pretreatment, causing rigid friction against the inner wall of the tapered opening at the wire drawing die entrance. This friction not only scratches the inner wall of the wire drawing die and damages the dimensional accuracy of the die hole, causing the diameter of the subsequently finely drawn wire to exceed the tolerance, but also requires frequent replacement of the wire drawing die due to damage to the inner wall, significantly increasing the cost of production consumables. At the same time, replacing the wire drawing die requires machine downtime, which seriously affects the continuity and efficiency of production.

[0006] On the other hand, the ends of the wire are prone to deformation after being rigidly scraped, such as the ends being squeezed and flattened, or the edges wrinkling. Even if they barely pass through the wire drawing die entrance, during the subsequent fine drawing process, the deformed ends will form irregular contact with the inner wall of the circular diameter hole in the middle of the wire drawing die, resulting in defects such as scratches and indentations on the surface of the yellow wire. Furthermore, the deformed ends will disrupt the uniform force on the wire, causing problems such as local diameter deviations and bamboo-like patterns in the finely drawn yellow wire, ultimately generating a large number of scraps, reducing the yield of yellow wire, and further increasing production losses and costs.

[0007] In summary, the existing traditional manual wire threading method lacks a targeted guiding and protective structure, which makes the wire end prone to rigid rubbing against the inner wall of the drawing die opening. This increases the frequency and cost of drawing die replacement, and the deformation of the wire end causes quality defects in the subsequent fine drawing of the yellow wire. This has become a key issue restricting the improvement of production efficiency, cost control and quality stability of yellow wire fine drawing. There is an urgent need for a technical solution that can avoid wire threading rubbing and ensure wire threading accuracy to solve the above pain points. Summary of the Invention

[0008] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a fine drawing device and its drawing method for producing yellow silk, which can quickly draw the silk thread and directly pass it through the conical hole area of ​​the drawing die.

[0009] To achieve the above objectives, the present invention provides the following technical solution: The invention is further configured as follows: it includes a housing, a straightening device disposed on the top of the housing, a wire drawing die, and a fine drawing device for yellow wire production located beside the wire drawing die. The fine drawing device for yellow wire production also includes a flattening mechanism and a wire threading guide mechanism. The straightening device includes a setting plate disposed on the top of the housing. The flattening mechanism is disposed beside the setting plate. The wire threading guide mechanism is disposed beside the setting plate. The wire threading guide mechanism includes a guide part, a mounting plate, a limiting part, and a clamping part. The guide part is disposed on the setting plate, and the top of the guide part has a semi-circular travel opening for carrying and conveying the flattened wire. The mounting plate is slidably disposed on the straightening device. The limiting part is slidably disposed vertically beside the mounting plate, and the limiting part has a Y-shaped structure. The clamping part has a pair and is slidably disposed on the mounting plate respectively. When the limiting part rises, it can drive the pair of clamping parts to move in a relatively close state.

[0010] By adopting the above technical solution, the problem of rigid friction between the wire end and the inner wall of the drawing die opening during traditional manual wire threading is solved. This achieves the effects of reducing the frequency of drawing die replacement, reducing production costs, improving production efficiency, and avoiding the generation of waste products such as yellow wire surface scratches and diameter deviations caused by wire end deformation due to friction during subsequent fine drawing.

[0011] The present invention is further configured such that: the threading guide mechanism also includes a bearing rotating part; the end face of the limiting part is provided with a pair of inclined slots, and the pair of inclined slots are located on the side of the clamping part; the bearing rotating part has a pair and is rotatably disposed on the clamping part, and the pair of bearing rotating parts are located on the inner end face of the inclined slots, so that when the limiting part rises, it can drive the bearing rotating part to rotate along the inclined slots in a rolling state.

[0012] The present invention is further configured such that: the threading guide mechanism also includes a transverse limiting block; the transverse limiting block has a pair and is respectively disposed on the side of the mounting plate, and the end face of the pair of transverse limiting parts is provided with a limiting groove for limiting the transverse clamping movement of the clamping part, so that when the clamping part moves, it can slide along the limiting groove of the transverse limiting block.

[0013] The present invention is further configured such that: the threading guide mechanism also includes an electric telescopic rod and a sliding column; the electric telescopic rod is disposed on the top of the mounting plate and is located above the guide part; the sliding column is disposed at the output end of the electric telescopic rod and is fixedly connected to the limiting part, so that when the electric telescopic rod is activated, the sliding part and the limiting part can move in a vertical direction.

[0014] The invention is further configured such that: the wire threading guiding mechanism includes a ball screw, a first rotary driver, and a guide post; the ball screw is rotatably disposed beside the mounting plate, and the ball screw is threadedly engaged with the mounting plate; the first rotary driver is disposed on the top of the straightening device, and the output end of the first rotary driver is connected to the input end of the ball screw via a coupling; when the first rotary driver is activated, the mounting plate can be driven to move by the ball screw; the guide post is disposed beside the straightening device, and the guide post is clearance-fitted with the mounting plate; the mounting plate can move towards the direction of the wire drawing equipment via the clearance-fitted guide post.

[0015] The invention is further configured such that: the flattening mechanism includes a positioning part, a first flattening roller, a second flattening roller, and a limiting channel; the positioning part is disposed on the top of the straightening device and is located above the guide part; the first flattening roller is rotatably disposed on the positioning part; the second flattening roller is rotatably disposed on the straightening device and is located below the first flattening roller, and a gap for squeezing and limiting the passage of the thread is formed between the first flattening roller and the second flattening roller; the limiting channel is installed on the side of the setting plate, and a tapered opening for the thread to pass through is provided on the side of the limiting channel, the tapered opening being divided into a first tapered opening and a straight hole, the first tapered opening and the straight hole constituting a tapered opening for the thread to pass through.

[0016] By adopting the above technical solution, the ends of the wire are ensured to be flush after being processed by the first and second flattening rollers, providing a reliable guarantee for the stable passage of the wire through the circular diameter hole. It also solves the problem that operators need to use a grinding plate to polish the wire ends before threading during precision drawing.

[0017] The present invention is further configured such that: the flattening mechanism includes a second rotary driver, a first gear and a second gear; the second rotary driver is disposed on the side of the straightening device, and the output end of the second rotary driver is connected to the input end of the second flattening roller; the first gear is disposed on the outside of the second flattening roller; the second gear is disposed on the outside of the first flattening roller, and the second gear and the first gear mesh with each other, so that when the second flattening roller and the first gear rotate, the meshing first gear can be driven to rotate.

[0018] The present invention is further configured such that: the straightening device includes a mounting frame, a first lateral moving part, a first adjusting screw, a first lateral abutment part, and a second lateral abutment part; the mounting frame is disposed on the top of the housing and is located beside the mounting plate; the first lateral moving part has a pair and is slidably disposed on the top of the mounting frame, and the top of the mounting frame is provided with a horizontal groove for limiting the movement of the pair of first lateral moving parts; the first adjusting screw has a pair and is rotatably disposed on the top of the mounting frame, and the bottom of the pair of first adjusting screws is rotatably connected to the top of the pair of first lateral moving parts, so that when the first adjusting screw rotates, it can drive the first lateral moving part to move; the first lateral abutment part has a pair and is rotatably disposed on the first lateral moving part; the second lateral abutment part has a plurality of parts and is rotatably disposed on the top of the mounting frame, and the plurality of second lateral abutment parts are staggered and located beside the first lateral abutment part.

[0019] The present invention is further configured such that: the straightening device includes a first vertical sliding part, a second adjusting screw, a first vertical abutting roller, and a second abutting roller; the first vertical sliding part has a pair and is slidably disposed on the top of the setting plate, and the top of the setting plate is provided with a straight groove for restricting the vertical sliding of the pair of first vertical sliding parts; the second adjusting screw has a pair and is rotatably mounted on the top of the setting plate, and the bottom of the pair of second adjusting screws is rotatably connected to the top of the pair of first vertical sliding parts, so that when the second adjusting screw rotates, it can drive the first vertical sliding part to move; the first vertical abutting roller has a pair and is rotatably disposed on the first vertical sliding part; the second abutting roller has a plurality of rollers and is rotatably mounted on the side of the setting plate, and the plurality of second abutting rollers are staggered below the first vertical abutting roller.

[0020] A method for fine drawing yellow filaments, using a fine drawing device for yellow filament production as described above, includes the following steps: S1. During operation, the operator pulls the wire to be finely drawn through the straightening device and the flattening mechanism in sequence until it stops beside the wire-threading guide mechanism. After being processed by the flattening mechanism, the wire naturally stops in the semi-circular stroke opening at the top of the guide section. The semi-circular stroke opening stably supports the wire, preventing it from shifting or falling during the wire conveying process. S2. The straightening device and flattening mechanism continue to feed the wire to the wire threading guide mechanism. Under the guidance of the guide part, the wire is fed between a pair of clamping parts. At this time, the limiting part of the wire threading guide mechanism rises vertically, driving the pair of clamping parts to move closer to each other until the opening of the working clamping surface of the pair of clamping parts comes into close contact with the wire and stops. Since the wire is stably supported by the straightening device, flattening mechanism and guide part throughout the process, and the clamping part only clamps the middle part of the wire, the wire traction end extends a distance to the outside of the clamping part. The extended section of the wire remains straight and is naturally centered and aligned with the opening in the middle of the wire drawing die. S3. Start the rotary drive of the wire threading guide mechanism to drive the ball screw to rotate. The mounting plate that is threaded with the ball screw slides horizontally along the guide post towards the wire drawing die, so that the wire traction end extending from the outside of the clamping part is accurately moved to the position of the wire drawing die and passes through the conical opening area of ​​the wire drawing die and enters the circular diameter hole area at the rear end. After the wire enters the circular diameter hole area, the limiting part descends, driving the pair of clamping parts to move away from each other and release the wire. Then the flattening mechanism continues to feed the wire, so that the wire passes through the circular diameter hole area of ​​the wire drawing die for normal fine drawing hole work.

[0021] In summary, this application includes at least one of the following beneficial technical effects: By using a wire threading guide mechanism, the problem of rigid friction between the wire end and the inner wall of the drawing die opening during traditional manual wire threading is solved. This achieves the effects of reducing the frequency of drawing die replacement, reducing production costs, improving production efficiency, and avoiding the generation of waste products such as yellow wire surface scratches and diameter deviations caused by wire end deformation due to friction during subsequent precision drawing.

[0022] By setting up a flattening mechanism, to ensure the wire ends are flush, the first and second flattening rollers rotate in opposite directions, repeatedly flattening and straightening the wire ends. This ensures that the wire ends meet the flush requirement after being processed by the first and second flattening rollers, providing a reliable guarantee for the subsequent stable passage of the wire through the circular diameter hole. It also solves the problem that operators need to use a grinding plate to polish the wire ends before threading during precision drawing. Attached Figure Description

[0023] Figure 1 This is a first-view perspective three-dimensional structural diagram of a precision drawing device for producing yellow silk according to the present invention; Figure 2 This is a second-view perspective three-dimensional structural diagram of a precision drawing device for producing yellow silk according to the present invention; Figure 3 This is a front view structural diagram of a precision drawing device for producing yellow silk according to the present invention; Figure 4 This is a three-dimensional structural diagram of the straightening device and flattening mechanism of a precision drawing equipment for producing yellow silk according to the present invention; Figure 5 This is a three-dimensional structural diagram of the threading and traction mechanism of a precision drawing device for producing yellow silk according to the present invention; Figure 6 This is a side view of the electric telescopic rod and drawing die of a fine drawing device for producing yellow silk according to the present invention; Figure 7 This is a partial three-dimensional cross-sectional view of the limiting part and the first flattening roller of a precision drawing device for producing yellow silk according to the present invention; Figure 8 for Figure 4 Enlarged structural diagram at point A in the middle; Figure 9 for Figure 7 Enlarged structural diagram at point B; Figure 10 This is a three-dimensional structural diagram of the first vertical sliding part and the first vertical abutting roller of a precision drawing device for producing yellow silk according to the present invention; Explanation of reference numerals in the attached drawings: 1. Machine casing; 2. Straightening device; 21. Setting plate; 22. Mounting bracket; 23. First lateral moving part; 24. First adjusting screw; 25. First lateral abutment part; 26. Second lateral abutment part; 27. First vertical sliding part; 28. Second adjusting screw; 29. ​​First vertical abutment roller; 291. Second abutment roller; 3. Wire drawing die; 4. Yellow wire fine drawing equipment; 5. Flattening mechanism; 51. Positioning part; 52. 53. First flattening roller; 54. Second flattening roller; 55. Restriction channel; 56. Second rotary actuator; 57. First gear; 58. Second gear; 69. Threading guide mechanism; 60. Guide part; 61. Mounting plate; 62. Restriction part; 63. Clamping part; 64. Bearing rotating part; 65. Lateral restriction block; 66. Electric telescopic rod; 67. Sliding column; 68. Ball screw; 691. First rotary actuator; 692. Guide column. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0026] Please see Figure 1-10 The present invention provides the following technical solutions: Example 1: In the production of yellow silk fine drawing, the traditional manual threading method lacks stable guidance, causing the ends of burrs, bends, or uneven silk threads to rigidly rub against the inner wall of the drawing die 3 opening, resulting in the failure of the accuracy of the drawing die 3 hole. This requires frequent replacement of the drawing die 3, which in turn leads to increased production costs and reduced production efficiency.

[0027] The device includes a housing 1, a straightening device 2 mounted on top of the housing 1, a wire drawing die 3, and a yellow wire fine drawing device 4 located beside the wire drawing die 3. The yellow wire fine drawing device also includes a flattening mechanism 5 and a wire threading guide mechanism 6. The straightening device 2 includes a mounting plate 21 mounted on top of the housing 1. The flattening mechanism 5 is located beside the mounting plate 21. The wire threading guide mechanism 6 is located beside the mounting plate 21. The wire threading guide mechanism 6 includes a guide part 61, a mounting plate 62, a limiting part 63, and a clamping part 64. The guide part 61 is mounted on the mounting plate 21, and the top of the guide part 61 has a semi-circular travel opening for carrying and feeding the flattened wire. The mounting plate 62 is slidably mounted on the straightening device 2. The limiting part 63 is slidably mounted vertically beside the mounting plate 62, and the limiting part 63 has a Y-shaped structure. There is a pair of clamping parts 64, which are slidably mounted on the mounting plate 62 respectively. When the limiting part 63 rises, it can drive the pair of clamping parts 64 to move closer to each other.

[0028] In this embodiment, the drawing die 3 has an opening in the middle for the wire to pass through. The initial contact end of the opening with the wire is a tapered hole, and the rear end is an abutment groove for the wire to pass through. The abutment groove is a circular diameter hole that restricts the wire from passing through. After the wire passes through the tapered hole, its outer wall fits evenly against the circular diameter hole, and then it enters the subsequent yellow wire fine drawing device 4. The working clamping surfaces of the pair of clamping parts 64 are each provided with openings for clamping the yellow wire. During operation, the operator pulls the wire, passing it sequentially through the straightening device 2 and the flattening mechanism 5, until it stops beside the wire guiding mechanism 6. After being flattened by the flattening mechanism 5, the wire stops at the top of the semi-circular stroke opening at the top of the guide part 61, at which point the wire is under load. Then, the straightening device 2 and the flattening mechanism 5 continue to feed the wire, and the wire is guided by the guide part 61 to be transported between the pair of clamping parts 64. At this time, the limiting part 63 rises, driving a pair of clamping parts 64 to move closer together until the openings on the working clamping surfaces of the pair of clamping parts 64 come into contact with the wire and stop. In this embodiment, the clamping parts 64 are preferably made of rubber, which will not damage the clamped wire. The traction end of the clamped wire is not completely clamped by the clamping part 64, but extends a distance to the outside of the clamping part 64. Since the wire is stably supported by the straightening device 2, the flattening mechanism 5 and the guide part 61, and when the wire is clamped by the clamping part 64, the section of wire extending out of the clamping part 64 will not bend, but will be aligned with the center opening of the drawing die 3. This ensures that when the wire passes through the straightening device 2, the flattening mechanism 5 and the wire threading guide mechanism 6 in sequence, the clamped and extended end can accurately move to the position of the drawing die 3 and pass through its conical opening area. In this embodiment, the mounting plate 62 can be horizontally slidably mounted on the setting plate 21, allowing the clamped wire to pass directly through the tapered hole area of ​​the drawing die 3 and into the circular diameter hole area at the rear end when the mounting plate 62 moves. After entering, the pair of clamping parts 64 move away from each other, and the flattening mechanism 5 then feeds the wire, allowing it to pass through the circular diameter hole area of ​​the drawing die 3 for normal stretching and piercing. This solves the problem of rigid friction between the wire end and the inner wall of the drawing die 3 opening in traditional manual wire threading, achieving the effects of reducing the frequency of drawing die 3 replacement, reducing production costs, improving production efficiency, and avoiding the generation of defective products such as yellow wire surface scratches and diameter deviations caused by wire end deformation due to friction during subsequent fine drawing.

[0029] See Figures 6-8 The threading guide mechanism 6 also includes a bearing rotating part 65; the end face of the limiting part 63 is provided with a pair of inclined slots, and the pair of inclined slots are located on the side of the clamping part 64; the bearing rotating part 65 has a pair and is rotatably disposed on the clamping part 64, and the pair of bearing rotating parts 65 are located on the inner end face of the inclined slots. When the limiting part 63 rises, it can drive the bearing rotating part 65 to rotate along the inclined slots in a rolling state.

[0030] Specifically, when the limiting part 63 is in the raised state beside the mounting plate 62, the inclined slot on the end face of the limiting part 63 can drive the bearing rotating part 65 to rotate. In this state, the bearing rotating part 65 drives a pair of clamping parts 64 to move closer together, thereby performing a clamping operation on the wire that has moved between the pair of clamping parts 64 and is located above the guide part 61. When the limiting part 63 descends, it drives the pair of clamping parts 64 to move further apart. When the wire passes through the guide part 61, if the clamping parts 64 have already clamped the wire, this clamping is not completely fixed, but rather in an abutting state. At this time, the flattening mechanism 5 continues to feed the wire, causing the wire to extend beyond the outside of the clamping parts 64 and maintain a specific distance, preferably set to five centimeters. Subsequently, the clamping parts 64 continue to maintain the clamping action, and in this state, the clamping parts 64 form a stable clamping and fixing of the wire.

[0031] See Figures 6-8 The threading guide mechanism 6 also includes a transverse limiting block 66; the transverse limiting block 66 has a pair and is respectively disposed on the side of the mounting plate 62, and the end faces of the pair of transverse limiting parts 63 are provided with limiting grooves for limiting the transverse clamping movement of the clamping part 64, so that the clamping part 64 can slide along the limiting groove of the transverse limiting block 66 when it moves.

[0032] Specifically, when the limiting part 63 rises and drives the clamping part 64 to move through the bearing rotating part 65, the clamping part 64 and the transverse limiting block 66 are in clearance fit, which enables the pair of clamping parts 64 to move relatively close or relatively far apart.

[0033] See Figure 5 and Figure 6 The threading guide mechanism 6 also includes an electric telescopic rod 67 and a sliding column 68; the electric telescopic rod 67 is located on the top of the mounting plate 62 and above the guide part 61; the sliding column 68 is located at the output end of the electric telescopic rod 67 and is fixedly connected to the limiting part 63. When the electric telescopic rod 67 is activated, the sliding part and the limiting part 63 can move in a vertical direction.

[0034] Specifically, in this embodiment, the top of the housing 1 is provided with a displacement sensor for detecting the pair of clamping parts 64 extending from the wire, and a controller is located at the bottom of the housing 1. When the wire passes through the guide part 61 and is between the clamping parts 64, the displacement sensor sends a signal to the controller, which then controls the electric telescopic rod 67 to start. When the electric telescopic rod 67 starts, it can drive the pair of clamping parts 64 to perform clamping action through the sliding column 68. The displacement sensor is used to detect the position of the wire, so that the clamping parts 64 can clamp according to the position of the wire.

[0035] See Figure 7The wire threading guide mechanism 6 also includes a ball screw 69, a first rotary driver 691, and a guide post 692. The ball screw 69 is rotatably disposed on the side of the mounting plate 21, and the ball screw 69 is threadedly engaged with the mounting plate 62. The first rotary driver 691 is disposed on the top of the straightening device 2, and the output end of the first rotary driver 691 is connected to the input end of the ball screw 69 via a coupling. When the first rotary driver 691 is started, it can drive the mounting plate 62 to move through the ball screw 69. The guide post 692 is disposed on the side of the straightening device 2, and the guide post 692 is clearance-fitted with the mounting plate 62. The mounting plate 62 can move towards the direction of the wire drawing device 4 through the clearance-fitted guide post 692.

[0036] Specifically, in this embodiment, the displacement sensor is also used to control the start and stop of the first rotary driver 691, and the first rotary driver 691 is preferably a servo motor. When the wire is clamped by the clamping part 64 and the wire extends a certain distance beyond the clamping part 64, the displacement sensor sends a signal to the controller. After receiving the signal, the controller controls the first rotary driver 691 to start. When the first rotary driver 691 starts, it drives the mounting plate 62, the limiting part 63, and the clamping part 64 to move along the guide post 692 towards the drawing die 3 through the ball screw 69, so that the clamped wire stably passes through the conical hole position of the drawing die 3, realizing the rapid traction operation between the wire and the drawing die 3.

[0037] Example 2 addresses the technical challenge of making it difficult for the wire to stably pass through the subsequent circular diameter hole area of ​​the drawing die 3 after the wire is straightened by the straightening device 2 and then docked with the drawing die 3, due to irregular deformation at the wire end.

[0038] See Figures 1-4 The flattening mechanism 5 includes a positioning part 51, a first flattening roller 52, a second flattening roller 53, and a limiting channel 54. The positioning part 51 is disposed on the top of the straightening device 2 and is located above the guide part 61. The first flattening roller 52 is rotatably disposed on the positioning part 51. The second flattening roller 53 is rotatably disposed on the straightening device 2 and is located below the first flattening roller 52. A gap for squeezing and limiting the passage of the thread is formed between the first flattening roller 52 and the second flattening roller 53. The limiting channel 54 is installed on the side of the setting plate 21, and a tapered opening for the thread to pass through is provided on the side of the limiting channel 54. The tapered opening is divided into a first tapered opening and a straight hole. The first tapered opening and the straight hole constitute the tapered opening for the thread to pass through.

[0039] Specifically, in this embodiment, when the wire passes through the straightening device 2 and is positioned at the first flattening roller 52 and the second flattening roller 53, the first flattening roller 52 and the second flattening roller 53 rotate relative to each other, squeezing the wire end as it passes through. To ensure the wire ends are flush, the first flattening roller 52 and the second flattening roller 53 then rotate in opposite directions, repeatedly flattening and straightening the wire ends. This ensures that the wire ends meet the flush requirement after being processed by the first flattening roller 52 and the second flattening roller 53, providing a reliable guarantee for the subsequent stable passage of the wire through the circular diameter hole. It also solves the problem that during fine drawing, operators need to use a grinding plate to grind the wire ends before threading.

[0040] See Figure 7 The flattening mechanism 5 also includes a second rotary driver 55, a first gear 56, and a second gear 57. The second rotary driver 55 is located beside the straightening device 2, and the output end of the second rotary driver 55 is connected to the input end of the second flattening roller 53. The first gear 56 is located outside the second flattening roller 53. The second gear 57 is located outside the first flattening roller 52, and the second gear 57 and the first gear 56 mesh with each other. When the second flattening roller 53 and the first gear 56 rotate, the meshing first gear 56 can be driven to rotate.

[0041] Specifically, in this embodiment, the second rotary driver 55 is preferably a servo motor. In order to drive the first flattening roller 52 and the second flattening roller 53 to rotate, the second rotary driver 55 is started. When the second rotary driver 55 is started, it can drive the second flattening roller 53 and the first gear 56 to rotate. At this time, the first gear 56 can drive the second gear 57 and the first flattening roller 52 to rotate, thereby realizing repeated squeezing and straightening of the yarn end.

[0042] See Figure 10The straightening device 2 also includes a mounting frame 22, a first lateral moving part 23, a first adjusting screw 24, a first lateral abutment part 25, and a second lateral abutment part 26. The mounting frame 22 is disposed on the top of the housing 1 and is located beside the mounting plate 21. The first lateral moving part 23 has a pair and is slidably disposed on the top of the mounting frame 22, and the top of the mounting frame 22 is provided with a horizontal groove for limiting the movement of the pair of first lateral moving parts 23. The first adjusting screw 24 has a pair and is rotatably disposed on the top of the mounting frame 22, and the bottom of the pair of first adjusting screws 24 is rotatably connected to the top of the pair of first lateral moving parts 23, so that when the first adjusting screw 24 rotates, it can drive the first lateral moving part 23 to move. The first lateral abutment part 25 has a pair and is rotatably disposed on the first lateral moving part 23. The second lateral abutment part 26 has a plurality of parts and is rotatably disposed on the top of the mounting frame 22, and the plurality of second lateral abutment parts 26 are staggered and located beside the first lateral abutment part 25.

[0043] Specifically, in this embodiment, to ensure that the thread can pass stably and horizontally through the straightening device 2 and smoothly through the flattening mechanism 5, the operator first passes the thread sequentially through the first transverse abutment 25 and the second transverse abutment 26. Both the first transverse abutment 25 and the second transverse abutment 26 adopt an I-shaped rotating wheel structure, and each I-shaped rotating wheel has an opening in the middle to restrict the thread's passage; this opening is designed as a concave structure. To adjust the distance between the first transverse abutment 25 and the second transverse abutment 26, and thus precisely control the thread's conveying tension, the operator needs to rotate the first adjusting screw 24. When the first adjusting screw 24 rotates, it drives the first transverse abutment 25, which is rotatably connected to it, to move closer to or further away from the second transverse abutment 26, thereby achieving precise adjustment of the position of the first transverse abutment 25.

[0044] See Figure 10 The straightening device 2 further includes a first vertical sliding part 27, a second adjusting screw 28, a first vertical abutting roller 29, and a second abutting roller 291. The first vertical sliding part 27 has a pair and is slidably disposed on the top of the setting plate 21, and the top of the setting plate 21 is provided with a straight groove for restricting the vertical sliding of the pair of first vertical sliding parts 27. The second adjusting screw 28 has a pair and is rotatably mounted on the top of the setting plate 21, and the bottom of the pair of second adjusting screws 28 is rotatably connected to the top of the pair of first vertical sliding parts. When the second adjusting screw 28 rotates, it can drive the first vertical sliding part to move. The first vertical abutting roller 29 has a pair and is rotatably disposed on the first vertical sliding part 27. The second abutting roller 291 has a plurality of rollers and is rotatably mounted on the side of the setting plate 21, and the plurality of second abutting rollers 291 are staggered below the first vertical abutting roller 29.

[0045] Specifically, in this embodiment, both the first vertical abutment roller 29 and the second abutment roller 291 have an I-shaped structure, and each I-shaped rotating wheel has an opening in the middle to restrict the passage of the thread. This opening is designed to be concave. To adjust the distance between the first vertical abutment roller 29 and the second abutment roller 291, and thus precisely control the tension of the thread, the operator needs to rotate the second adjusting screw 28. When the second adjusting screw 28 rotates, it can drive the first vertical abutment roller 29, which is rotatably connected to it, to move closer to or further away from the second abutment roller 291, thereby achieving precise adjustment of the position of the first vertical abutment roller 29.

[0046] A method for fine drawing yellow filaments, using a fine drawing device for yellow filament production as described above, includes the following steps: S1. During operation, the operator pulls the wire to be finely drawn through the straightening device 2 and the flattening mechanism 5 in sequence until it stops beside the wire-threading guide mechanism 6. After being processed by the flattening mechanism 5, the wire naturally stops in the semi-circular stroke opening at the top of the guide part 61. The semi-circular stroke opening stably supports the wire, preventing it from shifting or falling during the wire conveying process. S2, the straightening device 2 and the flattening mechanism 5 continue to feed the wire to the threading guide mechanism 6. Under the guidance of the guide part 61, the wire is fed between a pair of clamping parts 64. At this time, the limiting part 63 of the threading guide mechanism 6 rises vertically, driving the pair of clamping parts 64 to move closer to each other until the opening of the working clamping surface of the pair of clamping parts 64 comes into close contact with the wire. Since the wire is stably supported by the straightening device 2, the flattening mechanism 5 and the guide part 61 throughout the process, and the clamping part 64 only clamps the middle part of the wire, the wire traction end extends a distance to the outside of the clamping part 64. The extended section of the wire remains straight and is naturally aligned with the opening in the middle of the drawing die 3. S3. Start the rotary driver of the wire threading guide mechanism 6 to drive the ball screw 69 to rotate. The mounting plate 62, which is threaded with the ball screw 69, slides horizontally along the guide post 692 toward the wire drawing die 3, so that the wire traction end extending from the outside of the clamping part 64 is accurately moved to the position of the wire drawing die 3 and passes through the conical opening area of ​​the wire drawing die 3 and enters the circular diameter hole area at the rear end. After the wire enters the circular diameter hole area, the limiting part 63 descends, driving the pair of clamping parts 64 to move away from each other and release the wire. Then the flattening mechanism 5 continues to feed the wire, so that the wire passes through the circular diameter hole area of ​​the wire drawing die 3 for normal fine drawing hole work.

[0047] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

Claims

1. A precision drawing device for producing yellow silk, comprising a housing (1), a straightening device (2) disposed on the top of the housing (1), a drawing die (3), and a precision drawing device (4) for yellow silk located beside the drawing die (3), characterized in that: The precision drawing equipment for producing yellow silk also includes a flattening mechanism (5) and a threading guide mechanism (6); The straightening device (2) includes a mounting plate (21) disposed on the top of the housing (1); The flattening mechanism (5) is located on the side of the setting plate (21); The threading guide mechanism (6) is located on the side of the setting plate (21); The threading guide mechanism (6) includes a guide part (61), a mounting plate (62), a limiting part (63), and a clamping part (64). The guide section (61) is provided on the setting plate (21), and the top of the guide section (61) is provided with a semi-circular travel opening for conveying the flattened filament. The mounting plate (62) is slidably mounted on the straightening device (2); The limiting part (63) is vertically slidably disposed on the side of the mounting plate (62), and the limiting part (63) has a Y-shaped structure; The clamping parts (64) are a pair and are slidably disposed on the mounting plate (62). When the limiting part (63) rises, the pair of clamping parts (64) can be driven to move closer to each other.

2. The precision drawing equipment for producing yellow silk according to claim 1, characterized in that: The threading guide mechanism (6) also includes a bearing rotating part (65); the end face of the limiting part (63) is provided with a pair of inclined slots, and the pair of inclined slots are located on the side of the clamping part (64); the bearing rotating part (65) has a pair and is rotatably disposed on the clamping part (64), and the pair of bearing rotating parts (65) are located on the inner end face of the inclined slots. When the limiting part (63) rises, it can drive the bearing rotating part (65) to rotate along the inclined slots in a rolling state.

3. The precision drawing equipment for producing yellow silk according to claim 2, characterized in that: The threading guide mechanism (6) also includes a transverse limiting block (66); the transverse limiting block (66) has a pair and is respectively disposed on the side of the mounting plate (62), and the end faces of the pair of transverse limiting parts (63) are provided with limiting grooves for limiting the transverse clamping movement of the clamping part (64), so that the clamping part (64) can slide along the limiting groove of the transverse limiting block (66) when it moves.

4. The precision drawing equipment for producing yellow silk according to claim 3, characterized in that: The threading guide mechanism (6) also includes an electric telescopic rod (67) and a sliding column (68); the electric telescopic rod (67) is set on the top of the mounting plate (62) and is located above the guide part (61); the sliding column (68) is set at the output end of the electric telescopic rod (67) and is fixedly connected to the limiting part (63), so that when the electric telescopic rod (67) is started, the sliding part and the limiting part (63) can move in a vertical direction.

5. The precision drawing equipment for producing yellow silk according to claim 4, characterized in that: The wire threading guide mechanism (6) also includes a ball screw (69), a first rotary driver (691), and a guide post (692); the ball screw (69) is rotatably disposed on the side of the mounting plate (21), and the ball screw (69) is threadedly engaged with the mounting plate (62); the first rotary driver (691) is disposed on the top of the straightening device (2), and the output end of the first rotary driver (691) is connected to the input end of the ball screw (69) via a coupling; when the first rotary driver (691) is started, it can drive the mounting plate (62) to move through the ball screw (69); the guide post (692) is disposed on the side of the straightening device (2), and the guide post (692) is clearance-fitted with the mounting plate (62); the mounting plate (62) can move towards the direction of the yellow wire fine drawing device (4) through the clearance-fitted guide post (692).

6. The precision drawing equipment for producing yellow silk according to claim 5, characterized in that: The flattening mechanism (5) includes a positioning part (51), a first flattening roller (52), a second flattening roller (53), and a limiting channel (54). The positioning part (51) is located on the top of the straightening device (2) and above the guide part (61). The first flattening roller (52) is rotatably mounted on the positioning part (51). The second flattening roller (53) is rotatably mounted on the straightening device (2) and below the first flattening roller (52). A gap is formed between the first flattening roller (52) and the second flattening roller (53) for squeezing and limiting the passage of the thread. The limiting channel (54) is installed on the side of the setting plate (21), and a tapered opening for the thread to pass through is provided on the side of the limiting channel (54). The tapered opening is divided into a first tapered opening and a straight hole. The first tapered opening and the straight hole constitute a tapered opening for the thread to pass through.

7. The precision drawing equipment for producing yellow silk according to claim 6, characterized in that: The flattening mechanism (5) also includes a second rotary driver (55), a first gear (56), and a second gear (57); the second rotary driver (55) is located on the side of the straightening device (2), and the output end of the second rotary driver (55) is connected to the input end of the second flattening roller (53); the first gear (56) is located on the outside of the second flattening roller (53); the second gear (57) is located on the outside of the first flattening roller (52), and the second gear (57) and the first gear (56) mesh with each other, so that when the second flattening roller (53) and the first gear (56) rotate, the meshing first gear (56) can be driven to rotate.

8. The precision drawing equipment for producing yellow silk according to claim 6, characterized in that: The straightening device (2) also includes a mounting bracket (22), a first lateral moving part (23), a first adjusting screw (24), a first lateral abutment part (25), and a second lateral abutment part (26); the mounting bracket (22) is disposed on the top of the housing (1), and the mounting bracket (22) is located beside the setting plate (21); the first lateral moving part (23) has a pair and is slidably disposed on the top of the mounting bracket (22), and the top of the mounting bracket (22) is provided with a horizontal groove for limiting the movement of the pair of first lateral moving parts (23); the first adjusting screw (24 ...5), and the first adjusting screw (26) is provided with a pair of horizontal grooves for limiting the movement of the pair of first lateral moving parts (23); The first adjustment screw (24) is rotatably mounted on the top of the mounting bracket (22), and the bottom of the first adjustment screw (24) is rotatably connected to the top of the first lateral moving part (23). When the first adjustment screw (24) rotates, it can drive the first lateral moving part (23) to move. The first lateral abutment part (25) has a pair and is rotatably mounted on the first lateral moving part (23). The second lateral abutment part (26) has a plurality of parts and is rotatably mounted on the top of the mounting bracket (22), and the plurality of second lateral abutment parts (26) are staggered on the side of the first lateral abutment part (25).

9. A precision drawing device for producing yellow silk according to claim 6, characterized in that: The straightening device (2) further includes a first vertical sliding part (27), a second adjusting screw (28), a first vertical abutting roller (29), and a second abutting roller (291); the first vertical sliding part (27) has a pair and is slidably disposed on the top of the setting plate (21), and the top of the setting plate (21) is provided with a straight groove for limiting the vertical sliding of the pair of first vertical sliding parts (27); the second adjusting screw (28) has a pair and is rotatably mounted on the top of the setting plate (21), and The bottom of a pair of second adjusting screws (28) is rotatably connected to the top of a pair of first vertical sliding parts. When the second adjusting screws (28) rotate, they can drive the first vertical sliding parts to move. There is a pair of first vertical abutting rollers (29) which are rotatably mounted on the first vertical sliding parts (27). There are multiple second abutting rollers (291) which are rotatably mounted on the side of the mounting plate (21), and the multiple second abutting rollers (291) are staggered below the first vertical abutting rollers (29).

10. A method for fine drawing yellow silk, using a fine drawing device for yellow silk production as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. During operation, the operator pulls the wire to be finely drawn through the straightening device (2) and the flattening mechanism (5) in sequence until it stops beside the wire guiding mechanism (6). After being processed by the flattening mechanism (5), the wire naturally stops in the semi-circular stroke opening at the top of the guide part (61). The semi-circular stroke opening stably supports the wire, preventing it from shifting or falling during the wire conveying process. S2, the straightening device (2) and the flattening mechanism (5) continue to feed the wire to the threading guide mechanism (6). Under the guidance of the guide part (61), the wire is fed to the space between a pair of clamping parts (64). At this time, the limiting part (63) of the threading guide mechanism (6) rises vertically, driving the pair of clamping parts (64) to move closer to each other until the opening of the working clamping surface of the pair of clamping parts (64) comes into close contact with the wire. Since the wire is stably supported by the straightening device (2), the flattening mechanism (5) and the guide part (61) throughout the process, and the clamping part (64) only clamps the middle part of the wire, the wire traction end extends a distance to the outside of the clamping part (64). The extended section of the wire remains straight and is naturally aligned with the opening in the middle of the drawing die (3). S3. Start the rotary drive of the wire threading guide mechanism (6) to drive the ball screw (69) to rotate. The mounting plate (62) that is threaded with the ball screw (69) slides horizontally along the guide post (692) toward the wire drawing die (3), so that the wire traction end extending from the outside of the clamping part (64) is accurately moved to the position of the wire drawing die (3) and passes through the conical opening area of ​​the wire drawing die (3) and enters the circular diameter hole area at the rear end. After the wire enters the circular diameter hole area, the limiting part (63) descends, driving a pair of clamping parts (64) to move away from each other and release the wire. Then the flattening mechanism (5) continues to feed the wire, so that the wire passes through the circular diameter hole area of ​​the wire drawing die (3) to perform normal fine drawing hole work.

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