A visual inspection device for wire diameter of a wire drawing machine

Abstract

This utility model relates to the field of wire drawing machine technology, and in particular to a wire diameter visual inspection device for a wire drawing machine. It includes a base plate, a linear module mounted on the base plate, a winding power mechanism poweredly connected to the linear module, and a winding drum poweredly connected to the winding power mechanism. A lifting frame is also provided on the base plate. Through the structural arrangement of a light shield, guide rollers, a light source, and the visual inspection module, a closed and stable inspection environment is formed, reducing external interference and improving image acquisition accuracy. The combination of an encoder and a ceramic fiber guide wheel further stabilizes the wire movement, providing a prerequisite for accurate inspection. Even if the angle of the wound wire changes as wire accumulates on the winding drum, it will not affect the change in the angle of the wire inside the light shield. Therefore, the overall device optimizes the wire diameter inspection process from multiple aspects, significantly improving the accuracy and reliability of refractory metal wire diameter inspection compared to existing technologies, meeting the needs of high-precision production.

Description

Technical Field

[0001] This utility model relates to the field of wire drawing machine technology, and in particular to a wire diameter visual inspection device for wire drawing machines. Background Technology

[0002] In the field of metal processing, refractory metals such as tungsten, tantalum, molybdenum, niobium, hafnium, chromium, vanadium, zirconium, and titanium are widely used in high-end fields such as aerospace, electronics, and machinery manufacturing due to their high melting point, high strength, and good chemical stability. For the wire drawing of these refractory metals, the tower wheel wire drawing machine has become a commonly used piece of equipment in the industry due to its efficient and stable performance. Taking the wire drawing machine described in application publication number CN117102260A as an example, its wire drawing assembly calibrates the wire path and controls the initial tension through the first guide wheel. A lubricating and cooling medium is applied by the graphite emulsion injection unit, and the material plasticity is enhanced by the heating unit. Then, the wire drawing die of the die unit achieves precise diameter reduction and shaping of the wire. Finally, driven by the drawing motor and with the cooperation of multiple guide wheels, the entire process chain from guiding pretreatment, lubrication and heating, diameter reduction deformation to traction and winding is completed, effectively ensuring the processing quality of high-hardness metal wires.

[0003] However, after the wire drawing process, accurate measurement of the finished wire diameter is a crucial step in ensuring product quality. Existing technologies typically place a wire diameter visual inspection device before the take-up unit. This device utilizes a high-speed industrial camera, a telecentric lens, and a high-brightness parallel light source to construct a non-contact online inspection system. It acquires the wire contour image through backlight imaging and uses sub-pixel algorithms to extract edges to calculate the wire diameter. However, in actual production, wire inevitably vibrates during the take-up process, severely affecting the accuracy of the wire contour image acquisition. Although existing technologies use ceramic fiber guide wheels as a third guide wheel between the drawing wheel and the take-up unit, which helps to suppress wire vibration to some extent, the angle at which the wire enters the take-up drum changes dynamically as more wire accumulates. This limits the guiding effect of the ceramic fiber guide wheel, thus affecting the accuracy of wire diameter detection and making it difficult to meet the increasingly stringent high-precision production requirements. Therefore, an improved technical solution is urgently needed to address the insufficient accuracy of existing tower wheel type wire drawing machines in the detection of refractory metal wire diameters. Utility Model Content

[0004] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0005] A wire diameter visual inspection device for a wire drawing machine includes a base plate, a linear module mounted on the base plate, a winding power mechanism poweredly connected to the linear module, and a winding drum poweredly connected to the winding power mechanism. The substrate is also provided with a lifting frame, and a light shield located in front of the take-up drum is provided on the lifting frame. Both the front and rear ends of the light shield are provided with wire passage ports. Guide rollers are movably connected at the upper and lower positions of the wire passage ports. A detection port is also provided on one side of the light shield. A vision detection module with its normal direction facing the detection port is also provided on the substrate, and a light source is provided on the inner side of the light shield corresponding to the detection port. An encoder is also installed on the raised frame, and a ceramic fiber guide wheel located in front of the sunshade is connected to the encoder.

[0006] Preferably, an electrical box is also installed on the substrate, and a control platform is provided on the electrical box. An opening is provided on one side of the electrical box, and one end of the linear module extends into the electrical box through the opening. The vision inspection module is installed on the side of the electrical box.

[0007] Preferably, the linear module includes a fixed base mounted on the base plate and one end extending into the electrical box through an opening, a linear guide rail mounted on the fixed base, a lead screw module mounted on the fixed base, a push plate slidably connected to the linear guide rail and drivingly connected to the lead screw module, and a motor mounted at the end of the fixed base and poweredly connected to the lead screw module. The motor is located inside the electrical box, and the winding power mechanism is mounted on the push plate.

[0008] Preferably, the lifting frame is made of sheet metal and includes a fixed part fixedly installed on the side of the fixed seat and an extension part formed on the fixed part. The fixed part has a right-angle structure in cross section, and the light shield and encoder are both installed on the extension part.

[0009] Preferably, the light shield includes a base plate, a side plate, and a square-shaped top. The side plate is integrally connected between one side of the base plate and the top. The other side of the base plate and the top is fixed to the extension. A hinge is installed on the side plate. The side plate is movably connected to a top cover that is closed on the top via the hinge. Both ends of the side plate are extended. Guide roller bearings are connected between the two ends of the side plate and the extension.

[0010] Compared with the prior art, the beneficial effects of this utility model are: By combining a light shield with guide rollers, a light source, and a vision inspection module, a closed and stable inspection environment is formed, reducing external interference and improving image acquisition accuracy. The combination of the encoder and ceramic fiber guide rollers further stabilizes the wire movement, providing a prerequisite for accurate inspection. Even if the angle of the wire changes as it accumulates on the winding drum, it will not affect the change in the angle of the wire inside the light shield. Therefore, the overall device optimizes the wire diameter inspection process from multiple aspects, significantly improving the accuracy and reliability of refractory metal wire diameter inspection compared to existing technologies, and meeting the needs of high-precision production.

[0011] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a front structural diagram of the present invention; Figure 3 This is a partial cross-sectional structural diagram of the present invention.

[0014] The reference numerals and names in the figure are as follows: 10. Base plate, 11. Electrical box, 12. Control platform, 13. Opening, 20. Linear module, 21. Fixing base, 22. Linear guide rail, 23. Screw module, 24. Push plate, 25. Motor, 30. Winding power mechanism, 31. Winding drum, 40. Lifting frame, 41. Fixing part, 42. Extension part, 50. Light shield, 51. Wire passage, 52. Guide roller, 53. Detection port, 54. Base plate, 55. Side plate, 56. Top, 57. Hinge, 58. Top cover, 60. Vision inspection module, 61. Light source, 70. Encoder, 71. Ceramic fiber guide wheel. Detailed Implementation

[0015] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] Please see Figure 1-3 In this embodiment of the present invention, a wire diameter visual inspection device for a wire drawing machine includes a base plate 10, a linear module 20 is mounted on the base plate 10, a winding power mechanism 30 is poweredly connected to the linear module 20, and a winding drum 31 is poweredly connected to the winding power mechanism 30. The linear module 20 is used to drive the winding drum 31 to reciprocate so as to evenly wind the wire onto the winding drum 31. The substrate 10 is also provided with a lifting frame 40, and a light shield 50 located in front of the take-up drum 31 is provided on the lifting frame 40. Both the front and rear ends of the light shield 50 are provided with wire passage ports 51. Guide rollers 52 are movably connected at the upper and lower positions of the wire passage ports 51. A detection port 53 is also provided on one side of the light shield 50. A vision detection module 60 with its normal direction facing the detection port 53 is also provided on the substrate 10, and a light source 61 is provided on the inner side of the light shield 50 corresponding to the detection port 53. An encoder 70 is also installed on the lifting frame 40, and a ceramic fiber guide wheel 71 located in front of the sunshade 50 is connected to the encoder 70.

[0017] After the metal wire is drawn by the wire drawing machine, it first passes through the ceramic fiber guide wheel 71 connected to the encoder 70. The ceramic fiber guide wheel 71 can initially stabilize the wire's direction, and the encoder 70 can monitor the wire's movement in real time. Then, the wire passes through the guide roller 52 of the wire passage 51 at the rear end of the light shield 50 and enters the light shield 50. The guide roller 52 can further limit the wire's vibration. When the wire passes through the light shield 50, its outline appears under the illumination of the light source 61. The vision inspection module 60 captures the image of the wire inside the light shield 50 by setting its normal orientation towards the inspection port 53, and performs wire diameter detection. After detection, the wire exits from the guide roller 52 of the wire passage 51 at the front end of the light shield 50, and finally, the winding power mechanism 30 drives the winding drum 31 to wind it up. The linear module 20 drives the winding drum 31 to move back and forth, realizing uniform winding of the wire and ensuring that the angle of the wire entering the winding drum 31 is relatively stable, reducing the impact on the detection accuracy.

[0018] The combination of the light shield 50, guide roller 52, light source 61, and vision inspection module 60 creates a closed and stable inspection environment, reducing external interference and improving image acquisition accuracy. The combination of encoder 70 and ceramic fiber guide roller 71 further stabilizes the wire movement, providing a prerequisite for accurate inspection. Even if the angle of the wire being wound on the winding drum 31 changes as more wire accumulates, it will not affect the change in the angle of the wire inside the light shield 50. Therefore, the overall device optimizes the wire diameter inspection process from multiple aspects, significantly improving the accuracy and reliability of refractory metal wire diameter inspection compared to existing technologies, and meeting the needs of high-precision production.

[0019] Please see Figure 1-2Based on the above technical solution, it is further proposed that an electrical box 11 be installed on the substrate 10. The electrical box 11 can centrally manage and protect the electrical components of the entire device, effectively avoiding interference from the external environment to the electrical system and enhancing the stability and safety of the equipment operation. The electrical box 11 is equipped with a control platform 12, which facilitates operators to monitor the detection process and adjust parameters in real time, improving the convenience and flexibility of operation. An opening 13 is opened on one side of the electrical box 11, and one end of the linear module 20 extends into the electrical box 11 along the opening 13. The vision inspection module 60 is installed on the side of the electrical box 11. Through this arrangement, space is rationally utilized, making the device structure more compact and reducing the floor space occupied. The vision inspection module 60 is installed on the side of the electrical box 11, which on the one hand provides a stable installation foundation with the help of the electrical box 11, ensuring the stability of the inspection module and reducing the impact of vibration and other factors on the detection accuracy. On the other hand, it facilitates the maintenance and debugging of the inspection module and reduces the later maintenance cost of the equipment.

[0020] Please see Figure 1-2 Based on the above technical solution, a further proposed linear module 20 includes a fixed base 21 mounted on a substrate 10 with one end extending into an electrical box 11 through an opening 13, a linear guide rail 22 mounted on the fixed base 21, a lead screw module 23 mounted on the fixed base 21, a push plate 24 slidably connected to the linear guide rail 22 and drivenly connected to the lead screw module 23, and a motor 25 mounted at the end of the fixed base 21 and poweredly connected to the lead screw module 23. The motor 25 is located inside the electrical box 11, and a winding power mechanism 30 is mounted on the push plate 24. The cooperation between the lead screw module 23 and the linear guide rail 22 accurately converts the rotational motion of the motor 25 into a smooth linear motion of the push plate 24 along the linear guide rail 22, driving the winding power mechanism 30 and the winding drum 31 to reciprocate, ensuring that the wire is evenly wound onto the winding drum 31. This design effectively avoids the problem of uneven wire accumulation causing changes in the angle of entry into the winding drum 31, which in turn affects the accuracy of wire diameter detection. The motor 25 is installed inside the electrical box 11, which not only provides good protection against external dust and debris, extending its service life, but also facilitates connection with electrical components inside the electrical box 11, optimizing the circuit layout. The sliding connection between the push plate 24 and the linear guide rail 22, as well as the transmission connection with the lead screw module 23, makes the overall structure compact and stable, enhancing rigidity and stability during movement and reducing vibration interference to the winding and detection processes. The design of one end of the fixed base 21 extending into the electrical box 11 makes full use of space, rationally plans the equipment layout, and also facilitates the inspection and maintenance of the internal components of the linear module 20, reducing the risk of equipment failure and maintenance costs, and improving the overall reliability and working efficiency of the wire diameter visual inspection device for the wire drawing machine.

[0021] Please see Figure 2-3Based on the above technical solution, it is further proposed that the lifting frame 40 be made of sheet metal. The lifting frame 40 includes a fixing part 41 fixedly installed on the side of the fixing base 21 and an extension part 42 formed on the fixing part 41. The fixing part 41 has a right-angle structure in cross section, which makes the fixing on the side of the fixing base 21 more stable. The light shield 50 and the encoder 70 are both installed on the extension part 42. The light shield 50 includes a base plate 54, a side plate 55 and a square frame-shaped top 56. The side plate 55 is integrally connected between one side of the base plate 54 and the top 56, and the other side of the base plate 54 and the top 56 are fixed to the base 21. On the extension 42, a hinge 57 is installed on the side plate 55. The side plate 55 is movably connected to the top cover 58 that closes on the top 56 via the hinge 57. The top cover 58 is movably connected to the side plate 55 via the hinge 57, making it easy to open for wire arrangement. Both ends of the side plate 55 are extended, and the guide rollers 52 are bearing connected between the two ends of the side plate 55 and the extension 42. This installation method not only ensures that the guide rollers 52 can rotate flexibly and effectively limit wire vibration, but also enhances the continuity and stability of the overall structure of the light shield 50. The components cooperate with each other, optimize the wire diameter detection environment, and ensure detection accuracy.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A wire diameter visual inspection device for a wire drawing machine, characterized in that, Includes a substrate (10), a linear module (20) is mounted on the substrate (10), a winding power mechanism (30) is poweredly connected to the linear module (20), and a winding drum (31) is poweredly connected to the winding power mechanism (30). A lifting frame (40) is also provided on the substrate (10). A light shield (50) located in front of the take-up drum (31) is provided on the lifting frame (40). A wire passage (51) is opened at both the front and rear ends of the light shield (50). Guide rollers (52) are movably connected at the upper and lower positions of the wire passage (51). A detection port (53) is also provided on one side of the light shield (50). A vision detection module (60) with its normal direction facing the detection port (53) is also provided on the substrate (10). A light source (61) is provided on the inner side of the light shield (50) corresponding to the detection port (53). An encoder (70) is also installed on the lifting frame (40), and a ceramic fiber guide wheel (71) located in front of the sunshade (50) is connected to the encoder (70).

2. The wire diameter vision detection device of the wire drawing machine according to claim 1, wherein, An electrical box (11) is also installed on the substrate (10). An operating platform (12) is provided on the electrical box (11). An opening (13) is provided on one side of the electrical box (11). One end of the linear module (20) extends into the electrical box (11) along the opening (13). A vision inspection module (60) is installed on the side of the electrical box (11).

3. The wire diameter vision detection device of a wire drawing machine according to claim 2, wherein, The linear module (20) includes a fixed base (21) mounted on a base plate (10) and one end extending into the electrical box (11) through an opening (13), a linear guide rail (22) mounted on the fixed base (21), a lead screw module (23) mounted on the fixed base (21), a push plate (24) slidably connected to the linear guide rail (22) and drivenly connected to the lead screw module (23), and a motor (25) mounted at the end of the fixed base (21) and poweredly connected to the lead screw module (23). The motor (25) is located inside the electrical box (11), and the winding power mechanism (30) is mounted on the push plate (24).

4. The wire diameter vision detection device of the wire drawing machine according to claim 3, wherein, The lifting frame (40) is made of sheet metal. The lifting frame (40) includes a fixed part (41) fixedly installed on the side of the fixed seat (21) and an extension part (42) formed on the fixed part (41). The fixed part (41) has a right-angle structure in cross section. The light shield (50) and the encoder (70) are both installed on the extension part (42).

5. The wire diameter vision detection device of a wire drawing machine according to claim 4, wherein The light shield (50) includes a base plate (54), a side plate (55) and a square top (56). The side plate (55) is integrally connected between one side of the base plate (54) and the top (56). The other side of the base plate (54) and the top (56) is fixed to the extension (42). A hinge (57) is installed on the side plate (55). The side plate (55) is movably connected to a top cover (58) that covers the top (56) through the hinge (57). Both ends of the side plate (55) are extended. A guide roller (52) is connected between the two ends of the side plate (55) and the extension (42).

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