Observation window device of heat treatment furnace in steel cord electroplating process

By installing the observation window device and camera system outside the heat treatment furnace, the problem of not being able to monitor the heating status of the steel wire in real time during the heat treatment process is solved, timely discovery and process adjustment of black wires are achieved, and the quality and efficiency of steel cord production are improved.

CN223268716UActive Publication Date: 2025-08-26ZHANGJIAGANG JUNMA STEEL CORD CO LTD
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Patent Information

Application Number
CN202422483025.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-14
Publication Date
2025-08-26
Estimated Expiration
2034-10-14

AI Technical Summary

Technical Problem

In the electroplating process of steel cord production, the heating process in the heat treatment furnace cannot be monitored in real time, resulting in the inability to detect impermeable steel wire (black wire) in time, which affects the quality of subsequent wet pulling processes and the risk of wire breaking.

Method used

The observation window device is installed outside the heat treatment furnace wall, and the observation channel is formed through the inner and outer cylinders. The movement of the observation window glass and the stop block realizes real-time monitoring of the heating state of the steel wire, and combines the observation camera and image processing system to automatically identify and adjust the process.

Benefits of technology

Real-time monitoring of the heating status of steel wires is realized, black wires are discovered in a timely manner and process is adjusted, reducing the risk of wire breaking and ensuring the stability and efficiency of heat treatment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an observation window device of a heat treatment furnace in a steel cord electroplating process. The observation window device comprises an inner cylinder, an outer cylinder, a first clamping plate, a second clamping plate, a stop block, an annular gasket, observation window glass and an annular pressing ring, according to the observation window device, the observation channel formed by the inner cylinder and the outer cylinder is additionally arranged outside the wall of the heat treatment furnace, an operator can observe the heating state of steel wires inside the furnace from the outside of the furnace, and the observation window and the furnace bottom form a certain angle, so that the state of each steel wire in the heat treatment furnace can be observed, black wires can be distinguished, and the process can be adjusted in time. During observation, the check block is operated from the outside to move upwards, the observation channel is opened, at the non-observation moment, the check block is released, the check block falls back, the observation channel is closed, and it is guaranteed that the furnace temperature is stable. Moreover, the whole process does not need to open a furnace cover or a furnace door, the furnace temperature in the furnace is not influenced, and the heat treatment temperature stability and heat treatment efficiency and quality are ensured.
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Description

Technical Field

[0001] The utility model relates to the technical field of steel cord production, in particular to heat treatment in an electroplating process, and specifically to an observation window device of a heat treatment furnace in the steel cord electroplating process. Background Art

[0002] The steel cord production system involves multiple processes, including pretreatment (removal of oxide layers and impurities), dry drawing, electroplating, wet drawing, phosphating, stranding, stress relief, and pre-deformation. The dry drawing process uses high-quality high-carbon steel as the starting material, processing it into wire rods of a specific diameter. This wire rod is then gradually thinned to the desired wire specifications through multiple precision drawing steps, known as cold drawing. The steel wires of varying diameters drawn in the dry drawing process are finished with a smooth finish. After electroplating, heat treatment, pickling, alkaline copper plating, acid zinc plating, tempering, and induction thermal diffusion, the resulting wires have a sorbite matrix with a uniform, dense brass coating. The brass-plated wires are then treated in a phosphoric acid solution to remove traces of zinc oxide and form a microporous phosphate coating. The subsequent wet drawing process involves twisting the individual filaments into steel cords of various structures. Multiple over-twisting devices are used to induce a certain degree of plastic deformation in the wires, eliminating the residual torsion and residual stresses generated by elastic deformation. Finally, the strands are pre-deformed to form a certain wave pattern, and the breaking elongation of the finished cord is changed by adjusting the deformation amount to obtain the finished cord.

[0003] In the dry drawing process, the wire rod is gradually drawn into the steel wire of the required diameter. Since the grains of the steel wire are severely deformed or even broken by external forces during the dry drawing process, the mechanical properties are seriously reduced. Therefore, before the copper plating process, the steel wire needs to absorb heat in a gas furnace for austenitization transformation, and then be quenched in a water bath and gradually cooled to transform into a rope body, thereby improving and restoring the ductility of the intermediate drawn steel wire to meet the requirements of the subsequent wet drawing process, provide an ideal metallographic structure, ensure work hardening during the wet drawing process, and ensure that the single wire after wet drawing obtains the desired tensile strength.

[0004] Therefore, the heat treatment of steel wire at the beginning of the electroplating process is particularly important. If the steel wire is not heated thoroughly, black wire will form in the furnace. The steel wire that is heated thoroughly will be orange-red. The internal structure of the steel wire that is not heated thoroughly will be unsatisfactory, and the wire will break during the subsequent wet drawing process. However, in the current heat outlet process, the furnace conditions are unknown, and it is impossible to detect whether black wire has occurred during the heating process. Utility Model Content

[0005] The utility model aims to provide an observation window device for a heat treatment furnace in a steel cord electroplating process. By adding an observation window outside the heat treatment furnace wall, the heating state of the steel wire inside can be observed from outside the furnace. The observation window forms a certain angle with the furnace bottom so that the state of each steel wire can be observed and black wire can be identified, which is conducive to timely adjustment of the process.

[0006] According to a first aspect of the present invention, an observation window device for a heat treatment furnace in a steel cord electroplating process is provided, comprising:

[0007] The inner cylinder is a cylindrical structure and is installed at a predetermined angle to the furnace wall of the heat treatment furnace and passes through the furnace wall;

[0008] The first clamping plate has a first circular hole adapted to the outer diameter of the inner tube, and one end of the inner tube is fixed inside the first circular hole; the first clamping plate is provided with a first groove on a side away from the furnace wall of the heat treatment furnace;

[0009] A second clamping plate is arranged opposite to the first clamping plate and can be fixed to the first clamping plate as a whole; the second clamping plate is provided with a second circular hole that matches the position and size of the first circular hole;

[0010] The outer cylinder is a cylindrical structure, one end of which is fixed into the second circular hole and the other end of which is formed with a flange ring;

[0011] Ring gasket;

[0012] Observation window glass;

[0013] An annular pressing ring, which presses the observation window glass and the annular gasket onto the flange ring and fixes them via bolts;

[0014] The inner cylinder, the first circular hole, the second circular hole, the outer cylinder, the annular gasket, the observation window glass, and the annular pressure ring are arranged along a common central axis.

[0015] A stopper that can be operated to move up and down is provided in the first groove between the first clamping plate and the second clamping plate. The stopper can completely block the first circular hole in at least one first position and can be moved away from the first circular hole in at least one second position.

[0016] Therefore, through the observation channel formed by the inner and outer cylinders added outside the heat treatment furnace wall, the operator can observe the heating status of the steel wire inside from outside the furnace. The observation window is at a certain angle to the furnace bottom, so that the status of each steel wire can be observed, black wire can be identified, and the process can be adjusted in time.

[0017] Preferably, the annular gasket and observation window glass are both made of high-temperature resistant materials. During observation, the stopper is moved upward from the outside to open the observation channel. When not observing, the stopper is released, causing it to fall back and close the observation channel, ensuring a stable furnace temperature. Furthermore, the entire process does not require opening the furnace cover or door, which does not affect the furnace temperature, ensuring stable heat treatment temperature, efficiency, and quality.

[0018] As an optional embodiment, the annular pressure ring is provided with a fixing seat for fixing an observation camera, and the lens of the observation camera is docked with the annular pressure ring and images the heating state of the steel wire in the cavity of the heat treatment furnace through the observation window glass, outer cylinder and inner cylinder.

[0019] It should be understood that all combinations of the aforementioned concepts and the additional concepts described in more detail below, as long as such concepts are not mutually inconsistent, can be considered part of the utility model subject matter of the present disclosure. In addition, all combinations of the claimed subject matter are considered part of the utility model subject matter of the present disclosure.

[0020] The foregoing and other aspects, embodiments, and features of the present invention will be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as the features and / or beneficial effects of the exemplary embodiments, will become apparent from the following description or through practice of specific embodiments according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are not intended to be drawn to scale. In the accompanying drawings, each identical or nearly identical component shown in various figures may be represented by the same reference numeral. For clarity, not every component is labeled in each figure. Embodiments of various aspects of the present invention will now be described by way of example and with reference to the accompanying drawings.

[0022] Figure 1 It is a structural schematic diagram of an observation window device of a heat treatment furnace in a steel cord electroplating process according to an embodiment of the present utility model.

[0023] Figure 2 The utility model is a schematic diagram of the exploded structure of the observation window device of the heat treatment furnace in the steel cord electroplating process according to the embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of an observation window device of a heat treatment furnace in a steel cord electroplating process according to an embodiment of the present invention being installed on a side wall of the heat treatment furnace.

[0025] Figure 4 It is a schematic diagram of the observation state of the observation window device of the heat treatment furnace in the steel cord electroplating process according to an embodiment of the present utility model.

[0026] Figure 5 It is a schematic diagram of an observation window device of a heat treatment furnace in a steel cord electroplating process according to another embodiment of the present invention. DETAILED DESCRIPTION

[0027] In order to better understand the technical content of the present invention, specific embodiments are given and described below in conjunction with the accompanying drawings.

[0028] Various aspects of the present invention are described in this disclosure with reference to the accompanying drawings, in which many illustrative embodiments are shown. The embodiments of the present disclosure are not necessarily intended to include all aspects of the present invention. It should be understood that the various concepts and embodiments introduced above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in the present invention are not limited to any embodiment. In addition, some aspects disclosed in the present invention can be used alone or in any appropriate combination with other aspects disclosed in the present invention.

[0029] {Example 1}

[0030] Combine Figure 1-4 As shown, the observation window device of the heat treatment furnace in the steel cord electroplating process according to an embodiment of the present invention includes an inner cylinder 110, an outer cylinder 120, a first clamping plate 210, a second clamping plate 220, a stopper 300, an annular gasket 410, an observation window glass 420 and an annular pressure ring 430.

[0031] like Figure 1 、 2 In the illustrated embodiment, the inner cylinder 110 is a cylindrical structure and is installed at a predetermined angle to the furnace wall of the heat treatment furnace 500 and passes through the furnace wall.

[0032] The first clamping plate 210 has a first circular hole 211 adapted to the outer diameter of the inner tube 110, and one end of the inner tube 110 is fixed inside the first circular hole 211; the first clamping plate 210 is provided with a first groove 212 on the side away from the furnace wall of the heat treatment furnace 500.

[0033] The second clamping plate 220 is arranged opposite to the first clamping plate 210 and can be fixed to the first clamping plate 210 as a whole; the second clamping plate 220 is provided with a second circular hole that matches the position and size of the first circular hole 211.

[0034] The outer cylinder 120 is a cylindrical structure, one end of which is fixed into the second circular hole, and the other end of which is formed with a flange ring 211.

[0035] The annular pressure ring 430 presses the observation window glass 420 and the annular gasket 410 onto the flange ring 211 and fixes them by bolts.

[0036] The inner cylinder 110 , the first circular hole 211 , the second circular hole, the outer cylinder 120 , the annular gasket 410 , the observation window glass 420 , and the annular pressure ring 430 are arranged along a common central axis.

[0037] The stopper 500 is arranged between the first clamping plate 210 and the second clamping plate 220, and can move up and down in the first groove 212. For example, the stopper 300 can be moved up and down in the first groove 212 by an operator operating from the outside. The stopper 300 can completely cover the first circular hole 211 in at least one first position, and can be moved away from the first circular hole 211 in at least one second position.

[0038] As an optional example, Figure 2 As shown, the block 300 has a rectangular blocking block 310 that cooperates with the first groove 212 and an operating handle 320 that is fixedly connected to the rectangular blocking block 310 and extends out of the upper surface of the first splint 210. The block 300 is moved up and down by operating the operating handle 320.

[0039] As an optional example, Figure 2 As shown, the upper side wall of the first clamping plate 210 is provided with a through hole to allow the operating handle 320 to pass therethrough and protrude from the upper surface of the first clamping plate 210 .

[0040] As an optional example, Figure 2 As shown, the second clamping plate 220 adopts the same structural design as the first clamping plate 210 and is arranged axially symmetrically with the first clamping plate 210, and the two are fixed by bolts.

[0041] Therefore, through the observation channel formed by the inner and outer cylinders added outside the heat treatment furnace wall, the operator can observe the heating status of the internal steel wire from outside the furnace. The observation window is at a certain angle to the furnace bottom, so that the status of each steel wire in the furnace cavity 501 of the heat treatment furnace 500 can be observed, black wire can be identified, and the process can be adjusted in time.

[0042] Preferably, the annular gasket and observation window glass are both made of high-temperature resistant materials. During observation, the stopper is moved upward from the outside to open the observation channel. When not observing, the stopper is released, causing it to fall back and close the observation channel, ensuring a stable furnace temperature. Furthermore, the entire process does not require opening the furnace cover or door, which does not affect the furnace temperature, ensuring stable heat treatment temperature, efficiency, and quality.

[0043] As an optional embodiment, the annular gasket 410 is a high temperature resistant gasket, for example, the annular gasket 410 includes a fire-resistant wool gasket, a ceramic gasket, a high temperature resistant plastic coil, or a fluororubber coil.

[0044] As an example, the high temperature resistant plastic coil is a polytetrafluoroethylene coil or a polyetheretherketone coil.

[0045] As an optional embodiment, the observation window glass 420 is a transparent high-temperature resistant glass, and is made of one of soda-lime high-temperature glass, borosilicate high-temperature glass, and quartz high-temperature glass.

[0046] As an optional embodiment, the predetermined angle refers to 15° to 30° between the central axis of the inner cylinder 110 and the bottom of the heat treatment furnace 500, so that the operator can cover every steel wire in the furnace from the field of vision outside the furnace, so that the operator can timely observe the heating status of each steel wire in the furnace, timely discover black wire in the furnace, provide a reference for adjusting the furnace temperature process, ensure that there is no black wire in the furnace, and reduce wire breakage in subsequent wire drawing processes.

[0047] {Example 2}

[0048] In the aforementioned embodiment, observation is performed by an observer based on experience or the heat treatment stage / time. In this embodiment, based on the aforementioned embodiment 1, a further design is provided for collecting and imaging data through an observation camera, and image processing and recognition is performed on the back-end computer system to identify black wires, thereby facilitating the adjustment of the furnace temperature and reducing wire breakage in subsequent drawing processes.

[0049] In this embodiment, a fixing seat for fixing the observation camera 1000 is provided on the annular pressure ring 430 , and an existing mature multi-directional adjustable camera quick release seat can be used to achieve connection and fixation with the camera.

[0050] The lens of the observation camera 1000 is docked with the annular pressure ring 430 and captures images of the heating state of the steel wire in the furnace chamber 501 of the heat treatment furnace 500 through the observation window glass 420 , the outer cylinder 120 and the inner cylinder 110 .

[0051] Therefore, by configuring an observation camera 1000 on the observation window, such as an industrial high-definition CMOS camera or a CCD camera, the heating status image of the steel wire in the furnace cavity is obtained through the observation channel, and transmitted to the host computer through the cable and data interface. The host computer identifies the black wire through image processing and recognition, and can promptly notify the operator to adjust the process and respond.

[0052] As an optional embodiment, the annular pressure ring is provided with a fixing seat for fixing an observation camera, and the lens of the observation camera is docked with the annular pressure ring and images the heating state of the steel wire in the cavity of the heat treatment furnace through the observation window glass, outer cylinder and inner cylinder.

[0053] As an optional embodiment, a motor drive mechanism 610 and a controller 620 are mounted on the outer wall of the heat treatment furnace 500. The motor drive mechanism 610 is connected to the stopper 300, and the motor output shaft is fixed to the operating handle of the stopper 300. The controller 600 uses a motor driver to control the movement of the motor drive mechanism to drive the stopper up and down according to a preset cycle, thereby opening or closing the observation channel.

[0054] When the observation channel is opened, imaging is collected through the observation camera 1000. The observation camera transmits the imaging data to the host computer through cables and data interfaces. The host computer processes and recognizes the images, identifies black silk, and promptly notifies the operator to make process adjustments and take appropriate measures, thus achieving automated recognition and early warning notifications.

[0055] While the present invention has been described above with reference to preferred embodiments, this is not intended to limit the present invention. Persons skilled in the art will readily appreciate that various modifications and variations may be made without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. An observation window device for a heat treatment furnace in a steel cord electroplating process, characterized in that: include: The inner cylinder (110) is a cylindrical structure and is installed at a predetermined angle to the furnace wall of the heat treatment furnace (500) and passes through the furnace wall; The first clamping plate (210) has a first circular hole (211) adapted to the outer diameter of the inner cylinder (110), and one end of the inner cylinder (110) is fixed inside the first circular hole (211); the first clamping plate (210) is provided with a first groove (212) on the side away from the furnace wall of the heat treatment furnace (500); A second clamping plate (220) is arranged opposite to the first clamping plate (210) and can be fixed to the first clamping plate (210) as a whole; the second clamping plate (220) is provided with a second circular hole that matches the position and size of the first circular hole (211); The outer cylinder (120) is a cylindrical structure, one end of which is fixed into the second circular hole, and the other end of which is formed with a flange ring (121); annular gasket (410); Observation window glass (420); An annular pressing ring (430), the annular pressing ring (430) presses the observation window glass (420) and the annular gasket (410) onto the flange ring (211) and fixes them by bolts; The inner cylinder (110), the first circular hole (211), the second circular hole, the outer cylinder (210), the annular gasket (410), the observation window glass (420), and the annular pressure ring (430) are arranged on a common central axis. A stopper (500) capable of being operated to move up and down is provided in the first groove (212) at a position between the first clamping plate (210) and the second clamping plate (220); the stopper (300) can completely block the first circular hole (211) in at least one first position, and can be moved away from the first circular hole (211) in at least one second position.

2. The observation window device of the heat treatment furnace in the steel cord electroplating process according to claim 1, characterized in that: The stopper (300) comprises a rectangular blocking block (310) matched with the first groove (212) and an operating handle (320) fixedly connected to the rectangular blocking block (310) and extending out of the upper surface of the first clamping plate (210), and the stopper (300) is operated to move up and down by the operating handle (320).

3. The observation window device of the heat treatment furnace in the steel cord electroplating process according to claim 2, characterized in that: The upper side wall of the first clamping plate (210) is provided with a through hole to allow the operating handle (320) to pass through the through hole and extend out of the upper surface of the first clamping plate (210).

4. The observation window device of the heat treatment furnace in the steel cord electroplating process according to claim 1, characterized in that: The second clamping plate (220) adopts the same structural design as the first clamping plate (210) and is arranged axially symmetrically with the first clamping plate (210), and the two are fixed by bolts.

5. The observation window device of the heat treatment furnace in the steel cord electroplating process according to claim 1, characterized in that: The annular gasket (410) is a high-temperature resistant gasket.

6. The observation window device of the heat treatment furnace in the steel cord electroplating process according to claim 1, characterized in that: The observation window glass (420) is transparent high-temperature resistant glass, and is made of one of soda-lime high-temperature glass, borosilicate high-temperature glass, and quartz high-temperature glass.

7. The observation window device of the heat treatment furnace in the steel cord electroplating process according to claim 1, characterized in that: The predetermined angle refers to an angle of 15° to 30° between the central axis of the inner cylinder (110) and the bottom of the heat treatment furnace (500).

8. The observation window device of a heat treatment furnace in a steel cord electroplating process according to any one of claims 1 to 7, characterized in that: The annular pressing ring (430) is provided with a fixing seat for fixing the observation camera (1000); the lens of the observation camera (1000) is docked with the annular pressing ring (430) and images the heating state of the steel wire in the furnace chamber (501) of the heat treatment furnace (500) through the observation window glass (420), the outer cylinder (210), and the inner cylinder (110).

9. The observation window device of the heat treatment furnace in the steel cord electroplating process according to claim 8, characterized in that: The observation camera (1000) adopts an industrial CMOS camera or a CCD camera, and obtains the heating state of the steel wire in the furnace cavity through an observation channel formed by the inner cylinder (110) and the outer cylinder (120). The observation camera transmits the data to the host computer through a cable and a data interface, and the black wire is identified through image processing and recognition in the host computer.

10. The observation window device of the heat treatment furnace in the steel cord electroplating process according to claim 9, characterized in that: A motor drive mechanism (610) and a controller (620) are provided on the outer wall of the heat treatment furnace (500). The motor drive mechanism (610) is connected to the block (300). The controller (620) is used to control the movement of the motor drive mechanism (610) to drive the block (300) to move up and down according to a preset cycle, thereby opening or closing an observation channel; and when the observation channel is opened, imaging is collected through an observation camera.