An intelligent heat treatment line with adaptive wire tension
By introducing moving heating and stretching components into the heat treatment line, real-time detection and precise correction of uneven wire diameter sections are achieved, solving the problem of uneven wire diameter and improving the performance consistency and production efficiency of finished steel wires.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HENAN JIGANG METAL PROD TECH CO LTD
- Filing Date
- 2026-04-22
- Publication Date
- 2026-07-10
AI Technical Summary
Existing heat treatment production lines cannot effectively and proactively correct uneven steel wire diameters, resulting in inconsistent performance of finished steel wires. Furthermore, traditional tension control devices cannot be precisely adjusted, affecting production efficiency and product quality.
The intelligent heat treatment line adopts adaptive wire tension. By setting up moving heating components and multiple sets of stretching components in the pretreatment furnace, it can detect uneven sections of wire diameter in real time, and perform local heating and precise stretching correction to achieve online adaptive control.
It significantly improves the performance consistency and production efficiency of finished steel wire, enhances the intelligence level of the production line and the product qualification rate, and reduces scrap and downtime.
Smart Images
Figure CN122357892A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of steel wire production technology, and in particular to an intelligent heat treatment line that adapts to steel wire tension. Background Technology
[0002] During the heat treatment process of steel wire, stable tension control is a key factor in ensuring its uniform structure and mechanical properties. Appropriate tension allows the steel wire to run straight in the furnace tube, ensuring uniform heating and thus guaranteeing stable wire performance. It also effectively eliminates or reduces bending during drawing. Especially in the production of high-end products such as automotive shock absorber spring steel wire, the requirements for steel wire quality stability and production process control are extremely high. Precise tension control is crucial for preventing wire diameter reduction, improving equipment reliability, and achieving safe production.
[0003] While existing technologies attempt to improve quality by optimizing tension control or improving heating methods, they all have limitations. For example, most production lines rely on counterweights or guide rollers to apply constant tension to the steel wire. Although this can prevent slack or overstretching, it cannot actively correct diameter unevenness. When the steel wire is locally thick, traditional tensioning devices can only make minor mechanical adjustments, which cannot eliminate defects and are prone to bamboo-like deformation due to stress concentration. On the other hand, existing production lines focus on the efficiency of processing multiple steel wires simultaneously, but lack the ability to detect and correct local defects in a single steel wire online. Although some solutions use straightening devices or sizing rollers to improve straightness, they cannot accurately intervene in diameter fluctuations before heat treatment.
[0004] Furthermore, conventional heating equipment (such as resistance furnaces or induction coils) is difficult to achieve precise local temperature control for steel wires with large diameter fluctuations. If the overall heating power is increased, it is easy to cause overheating in the thinner diameter section, which will aggravate the deterioration of the structure. Although some advanced production lines have introduced CNC systems or ultrasonic cleaning to improve the level of automation, their core is still focused on optimizing the downstream process, and they have failed to solve the heat treatment defects caused by uneven diameter from the source.
[0005] Given the aforementioned challenges, how to achieve intelligent and adaptive control of the running tension of steel wire during continuous heat treatment production, enabling it to actively correct uneven diameter sections and provide uniformly sized steel wire raw materials for subsequent heat treatment, thereby fundamentally improving the performance consistency and reliability of finished steel wire, has become a key technological bottleneck that needs to be overcome in this field.
[0006] Therefore, it is necessary to invent an intelligent heat treatment line that adapts to the steel wire tension to solve the above problems. Summary of the Invention
[0007] The purpose of this invention is to provide an intelligent heat treatment line that adapts to steel wire tension, aiming to solve the problem of how to actively correct uneven sections of steel wire diameter during continuous heat treatment production, thereby providing steel wire raw materials with uniform dimensions for subsequent heat treatment processes, and fundamentally improving the consistency and reliability of finished steel wire performance.
[0008] To achieve the above objectives, the present invention adopts the following technical solution: an intelligent heat treatment line with adaptive steel wire tension, comprising a wire feeding frame, a pretreatment furnace, a heat treatment furnace, a salt quenching tank, a first cooling device, a tempering device, a second cooling device, and a take-up frame arranged in sequence.
[0009] The pretreatment furnace is equipped with a movable heating component capable of locally heating the running steel wire, multiple stretching components capable of clamping and stretching the heated steel wire, and a drive component that drives the multiple stretching components to move along the running direction of the steel wire.
[0010] The pretreatment furnace is configured such that when there are uneven diameter sections in the steel wire, the moving heating assembly is controlled to locally heat the section, and a corresponding number of stretching assemblies are controlled to stretch and straighten the heated section.
[0011] Preferably, each set of stretching components includes a first clamping member and a second clamping member that can move closer to or further away from each other. The first clamping member and the second clamping member both have a ready state, a monitoring state, and a clamping state. The pretreatment furnace selectively activates a corresponding number of stretching components for stretching according to the length of the section on the steel wire that needs to be corrected.
[0012] Preferably, the first clamping member is provided with a second linear drive member, and the movable part of the second linear drive member is connected to the second clamping member to drive the second clamping member to move closer to or away from the first clamping member.
[0013] Preferably, the preparatory state is when the first clamping member or the second clamping member is away from the steel wire, the monitoring state is when the first clamping member or the second clamping member is wrapped around the steel wire but not in contact with it, the monitoring state can monitor the temperature and diameter of the steel wire, and the clamping state is when the first clamping member or the second clamping member clamps the steel wire.
[0014] Preferably, both the first clamping member and the second clamping member are provided with a heating device, and the heating device can be activated only when the first clamping member or the second clamping member is in a monitoring state.
[0015] Preferably, when multiple sets of tensioning components work together to stretch a section of steel wire, the first clamping member and the second clamping member located at both ends of the section of steel wire are in a clamping state, the first clamping member and the second clamping member located at other positions of the section of steel wire are in a monitoring state, and the first clamping member and the second clamping member of the remaining tensioning components that do not participate in stretching the steel wire are in a ready state.
[0016] Preferably, the second clamping member in the monitoring state can be driven by the second linear drive member to reciprocate between the adjacent first clamping members to heat and keep the steel wire in the area and monitor its diameter. The second clamping member in the clamping state can move relative to the first clamping member in the clamping state to stretch the steel wire between them.
[0017] Preferably, the movable heating assembly includes a heating element that can be sleeved on a steel wire, and a first linear drive element that drives the heating element to move along the axis of the steel wire.
[0018] Preferably, the inlet of the pretreatment furnace is equipped with a detection device for real-time detection and recording of the wire diameter.
[0019] Preferably, the pretreatment furnace is further provided with a guide component that is slidably connected to the stretching component, for guiding the stretching component that affects the steel wire to move along a direction parallel to the running direction of the steel wire.
[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0021] This invention utilizes a pretreatment furnace positioned between the wire feeding frame and the heat treatment furnace, along with integrated mobile heating components, multiple sets of stretching components with three operating modes, and a drive component. This enables online, adaptive correction of uneven wire diameter sections during operation. A detection device at the inlet identifies uneven diameter sections in real time, controlling the mobile heating components to perform tracking-type localized heating. The drive component then drives a corresponding number of stretching components to precisely stretch the heated sections. By proactively eliminating wire diameter unevenness at its source, this invention significantly improves the stability of subsequent heat treatment processes and the consistency of finished wire performance. Simultaneously, it enhances the production line's intelligence, production efficiency, and product qualification rate. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the intelligent heat treatment line with adaptive steel wire tension according to the present invention.
[0023] Figure 2 This is a schematic diagram of the pretreatment furnace in this invention.
[0024] Figure 3 This is a schematic diagram of the movable heating component in this invention.
[0025] Figure 4 This is a schematic diagram of the internal structure of the pretreatment furnace in this invention.
[0026] Figure 5 This is the present invention. Figure 4 Enlarged view of a portion of point A in the middle.
[0027] Figure 6 This is a top view schematic diagram of the positional relationship between the stretching component and the guiding component in this invention.
[0028] Figure 7 This is a schematic diagram of the first guide member in this invention.
[0029] Figure 8 This is a schematic diagram of the second guide member in this invention.
[0030] Figure 9 This is a schematic diagram of the tensioning assembly when the first clamping member is in the clamping state in this invention.
[0031] Figure 10 This is a schematic diagram of the first clamping member in the monitoring state in this invention.
[0032] Figure 11 This is a schematic diagram of the first clamping member in the ready state in this invention.
[0033] Figure 12 This is a schematic diagram of the position of the tensioning component when the length of the section with a larger wire diameter is shorter in this invention.
[0034] Figure 13 This is a schematic diagram of the position of the tensioning component when the length of the section with a larger wire diameter is relatively long in this invention.
[0035] Figure label:
[0036] 1. Wire feeding frame; 2. Heat treatment furnace; 3. Salt quenching tank; 4. First cooling device; 5. Tempering device; 6. Second cooling device; 7. Wire take-up frame; 8. Pretreatment furnace; 81. Moving heating assembly; 811. Heating element; 812. First linear drive element; 82. Tensioning assembly; 821. First clamping element; 822. Second clamping element; 823. Second linear drive element; 824. Sliding element; 83. Drive assembly; 84. Guide assembly; 841. First guide element; 842. Second guide element; 9. Steel wire. Detailed Implementation
[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0038] Example 1
[0039] To improve the finished product quality of steel wire 9 in sections with uneven diameter, and to provide steel wire 9 raw materials with uniform dimensions for subsequent heat treatment processes, thereby fundamentally improving the consistency and reliability of the finished steel wire 9 performance, such as... Figures 1 to 8 As shown, the present invention proposes an intelligent heat treatment line with adaptive steel wire tension, comprising a wire feeding frame 1, a pretreatment furnace 8, a heat treatment furnace 2, a salt quenching tank 3, a first cooling device 4, a tempering device 5, a second cooling device 6, and a take-up frame 7 arranged sequentially along the running direction of the steel wire 9.
[0040] The pretreatment furnace 8 is equipped with a movable heating component 81 that can locally heat the running steel wire 9, multiple stretching components 82 that can clamp and stretch the heated steel wire 9, and a driving component 83 that drives the multiple stretching components 82 to move along the running direction of the steel wire 9. When there is a section of the steel wire 9 with uneven diameter, the movable heating component 81 is controlled to locally heat the section, and then the stretching component 82 stretches the heated section.
[0041] The inlet of the pretreatment furnace 8 is equipped with a detection device for real-time detection and recording of the diameter of the steel wire 9. The movable heating assembly 81 includes a heating element 811 that can be sleeved on the steel wire 9, and a first linear drive element 812 that drives the heating element 811 to move along the axis of the steel wire 9. There are multiple heating elements 811. Multiple heating elements 811 can be distributed to heat multiple areas, or they can be used together to heat the same long area.
[0042] The heating element 811 can be an induction coil or a resistance heating ring sleeved on the steel wire 9, and the first linear drive element 812 can be a lead screw module driven by a servo motor or a linear motor.
[0043] When the detection device located at the inlet of the pretreatment furnace 8 detects a section of steel wire 9 with uneven diameter, it controls the moving heating component 81 to track and locally heat the section, and then controls the stretching component 82 driven by the drive component 83 to clamp the heated section and stretch it.
[0044] Each set of tensioning components 82 includes a first clamping member 821 and a second clamping member 822 that can move closer to or further away from each other. The first clamping member 821 and the second clamping member 822 are staggered. The first clamping member 821 is provided with a second linear drive member 823. The movable part of the second linear drive member 823 is connected to the second clamping member 822 to drive the second clamping member 822 to move closer to or further away from the first clamping member 821. The drive assembly 83 is connected to the first clamping member 821. The first clamping member 821 is driven by the drive assembly 83 to move synchronously with the steel wire 9. The second clamping member 822 is driven by the second linear drive member 823 to move relative to the first clamping member 821.
[0045] Both the first clamping member 821 and the second clamping member 822 include a clamping plate, a third linear drive member, and a connecting frame. There are two clamping plates, which are used to clamp the steel wire 9. The third linear drive member is used to drive the two clamping plates to move closer and further apart. The connecting frame is used to connect the third linear drive member to the second linear drive member 823.
[0046] The pretreatment furnace 8 is also provided with a guide assembly 84 that is slidably connected to the stretching assembly 82, which is used to guide the stretching assembly 82 that affects the steel wire 9 to move in a direction parallel to the running direction of the steel wire 9. The guide assembly 84 includes a first guide 841 that guides the movement trajectory of the first clamping member 821 and a second guide 842 that guides the movement trajectory of the second clamping member 822.
[0047] The connecting frame is also provided with a slider 824. The first guide 841 is provided with a first guide groove for the slider 824 of the first clamping member 821 to slide. The second guide 842 is provided with a second guide groove for the slider 824 of the second clamping member 822 to slide, and an avoidance groove corresponding to the movement trajectory of the slider 824 of the first clamping member 821.
[0048] The first guide member 841 is connected to the drive assembly 83, which is driven to move by the slider 824 on the first clamping member 821. The second guide member 842 can be connected to the power controller.
[0049] The drive assembly 83 includes a transmission chain connected to the first guide 841 of the first clamping member 821 and a drive wheel for driving the transmission chain. The drive assembly 83 can use the cooperation of sprockets and chains to drive the stretching assembly 82 to move. The drive chain of the drive assembly 83 can move continuously in one direction or reciprocate. When the drive chain moves continuously in one direction, the drive chain moves synchronously with the steel wire 9. When the drive chain moves reciprocally, the drive chain moves synchronously with the steel wire 9 before the stretching assembly 82 stretches the steel wire 9. After the stretching assembly 82 partially stretches the steel wire 9, the stretching assembly 82 releases the steel wire 9, and the drive chain drives the stretching assembly 82 to move in the opposite direction, preparing for the next stretching of the steel wire 9.
[0050] The drive assembly 83 also includes a closed-loop controlled servo motor and an encoder for detecting the position of the tension assembly 82, which drives the drive chain through the drive wheel.
[0051] When the diameter of the steel wire 9 is detected to be large, the heating element 811 in the movable heating assembly 81 heats the section of the steel wire 9 with a larger diameter. At the same time, the first linear drive element 812 drives the heating element 811 to move synchronously with the section of the steel wire 9 with a larger diameter, so that the heating element 811 only heats the section of the steel wire 9 with a larger diameter. When the section of the steel wire 9 with a larger diameter detaches from the movable heating assembly 81 and enters the area where the stretching assembly 82 is located, the first clamping element 821 and the second clamping element 822 cooperate to stretch the section of the steel wire 9 with a larger diameter.
[0052] In this embodiment, the coordinated setup of the inlet detection device and the mobile heating component 81 enables real-time identification, tracking, and precise local heating of uneven diameter sections of the steel wire 9 during operation. Through an array of independently controllable, multi-mode tensioning components 82 coordinated by a drive chain, the heated steel wire 9 sections are flexibly assembled and tensioned for correction, thereby eliminating localized coarse defects. The synergistic effect of this detection, heating, and tensioning system proactively eliminates the original dimensional inconsistencies of the steel wire 9 at the source, ensuring more uniform heating and cooling during subsequent heat treatment. This significantly improves the consistency of the mechanical properties, fatigue life, and overall quality of the finished steel wire 9. Simultaneously, it enables continuous online processing, reducing scrap and downtime, and improving production efficiency and flexibility.
[0053] Example 2
[0054] In actual use, there are problems such as the steel wire 9 having too large a diameter, and the moving heating component 81 being unable to heat the steel wire 9 to the specified temperature before it enters the area where the tension component 82 is located even at full power; and when the steel wire 9 has a large diameter and a long section, a single tension component 82 cannot complete the overall tension correction.
[0055] To solve the above technical problems, such as Figures 1 to 13 As shown, in another embodiment of the present invention, both the first clamping member 821 and the second clamping member 822 are provided with heating devices. When there is a section of uneven diameter in the steel wire 9, the moving heating component 81 is controlled to locally heat the section, and a corresponding number of stretching components 82 are controlled to stretch and correct the heated section.
[0056] Both the first clamping member 821 and the second clamping member 822 have a preparatory state, a monitoring state, and a clamping state. The pretreatment furnace 8 selectively activates a corresponding number of stretching components 82 to stretch the steel wire 9 according to the length of the section that needs to be corrected.
[0057] The ready state is when the first clamping member 821 or the second clamping member 822 is away from the steel wire 9, such as... Figure 11 As shown; the monitoring state is that the first clamping member 821 or the second clamping member 822 is sleeved outside the steel wire 9 but not in contact, such as... Figure 10As shown, the monitoring state can monitor the temperature and diameter of the steel wire 9 in real time, ensuring the local tensile quality of the steel wire 9, and can also support the steel wire 9 after it has softened at high temperature, preventing it from deforming due to gravity after softening; the clamping state is the state in which the first clamping member 821 or the second clamping member 822 clamps the steel wire 9 as shown. Figure 9 As shown; the first clamping member 821 or the second clamping member 822 can only activate the heating device when in monitoring mode.
[0058] When multiple sets of tensioning components 82 work together to stretch a section of steel wire 9, the first clamping member 821 and the second clamping member 822 located at both ends of the section of steel wire 9 are in a clamping state, the first clamping member 821 and the second clamping member 822 located at other positions of the section of steel wire 9 are in a monitoring state, and the first clamping member 821 and the second clamping member 822 of the other tensioning components 82 that do not participate in stretching the steel wire 9 are in a ready state.
[0059] The second clamping member 822 in the monitoring state can be driven by the second linear drive member 823 to reciprocate between the adjacent first clamping members 821 to heat and maintain the temperature of the steel wire 9 in the area and monitor its diameter. The first clamping member 821 in the monitoring state only heats and maintains the temperature of the steel wire 9 in its location to prevent the temperature of the area heated by the moving heating component 81 from dropping, thus ensuring the tensile quality of the steel wire 9. The heating device in the first clamping member 821 can intermittently heat or heat the steel wire 9 with low power to maintain the temperature of the steel wire 9 while preventing it from getting too hot. The second clamping member 822 in the clamping state can move relative to the first clamping member 821 in the clamping state to stretch the steel wire 9 between them.
[0060] The first clamping member 821 in the same group of stretching components 82 can be closer to the moving heating component 81 than the second clamping member 822, so that the stretching direction of the steel wire 9 is in the direction away from the moving heating component 81, preventing the steel wire 9 from being transported in the opposite direction due to stretching, affecting the judgment of the uneven diameter section of the steel wire 9, and also preventing the steel wire 9 from being transported in the opposite direction due to stretching, thus reheating the part that has already been heated by the moving heating component 81.
[0061] The heat treatment line also includes a controller that is communicatively connected to the stretching assembly 82. The controller is configured to: receive signals from the detection device; calculate and select the number of stretching assemblies 82 to be activated based on the length and position of the diameter uneven section; and issue control commands to the moving heating assembly 81 and the drive assembly 83.
[0062] When the diameter of the steel wire 9 is too large, even if the moving heating component 81 is at full power, it cannot heat the steel wire 9 to the specified temperature before it enters the area where the stretching component 82 is located. The heating devices of the first clamping member 821 and the second clamping member 822 can continue to heat the steel wire 9 a second time, ensuring that the steel wire 9 can be heated to the specified temperature before stretching, thus ensuring the overall quality of the steel wire 9.
[0063] The movable heating component 81 may not heat the section of the steel wire 9 with a larger diameter to the specified temperature, so as to prevent the steel wire 9 from softening and deforming before entering the area where the stretching component 82 is located. After the section of the steel wire 9 with a larger diameter enters the stretching area, the heating device of the first clamping member 821 and the second clamping member 822 heats the section of the steel wire 9 with a larger diameter to the specified temperature before stretching.
[0064] When the length of the larger diameter section of the steel wire 9 is shorter than the distance between two adjacent first clamping members 821 in the tensioning assembly 82, the position of the drive chain can be controlled to clamp the larger diameter section of the steel wire 9 between the two adjacent first clamping members 821. At this time, two sets of tensioning assemblies 82 process the larger diameter section of the steel wire 9. The first clamping member 821 and the second clamping member 822 at the far ends of the two sets of tensioning assemblies 82 are in a clamping state, clamping the steel wire 9. The first clamping member 821 in the clamping state is located at the end of the larger diameter section of the steel wire 9 closer to the moving heating assembly 81. The second clamping member 822 is located at the end of the section of the steel wire 9 with a larger diameter that is far from the moving heating component 81. The other first clamping members 821 and second clamping members 822 of the two sets of stretching components 82 are in a monitoring state, which can monitor the state of the steel wire 9 in real time. When the second clamping member 822 is in the monitoring state, it reciprocates, and the heating device inside maintains the temperature of the steel wire 9. When the second clamping member 822 is in the clamping state, it cooperates with the first clamping member 821 in the clamping state, and relative displacement occurs, stretching the heated steel wire 9 between the two until the diameter of the steel wire 9 reaches the qualified range.
[0065] like Figure 12 As shown in the figure, the solid line portion of the steel wire 9 represents the section with a larger diameter, and the dashed line portion represents the section that does not require stretching. When the length of the section with a larger diameter of the steel wire 9 is short, the leftmost first clamping member 821 and the rightmost second clamping member 822 are in a clamping state, located at both ends of the section with a larger diameter of the steel wire 9. The middle first clamping member 821 and the middle second clamping member 822 are in a monitoring state. The middle second clamping member 822 reciprocates between the two first clamping members 821 to maintain the temperature of this section of the steel wire 9. The leftmost first clamping member 821 remains relatively stationary with respect to the steel wire 9. The rightmost second clamping member 822 is driven to move to the right by the second linear drive member 823 to stretch the heated section of the steel wire 9.
[0066] When the section of steel wire 9 with a larger diameter is longer than the distance between two adjacent first clamping members 821 in the tensioning assembly 82, two or more tensioning assemblies 82 are used to process the section of steel wire 9 with a larger diameter. The first clamping member 821 and the second clamping member 822 at the far end of the multiple sets of tensioning assemblies 82 are in a clamping state to clamp the steel wire 9. The remaining first clamping members 821 and the second clamping members 822 of the multiple sets of tensioning assemblies 82 are in a monitoring state. The second clamping member 822 in the clamping state cooperates with the first clamping member 821 in the clamping state to cause relative displacement, stretching the heated steel wire 9 between them until the diameter of the steel wire 9 reaches the qualified range.
[0067] like Figure 13 As shown in the figure, the solid line portion of the steel wire 9 represents the section with a larger diameter, and the dashed line portion represents the section that does not require stretching. When the length of the section with a larger diameter of the steel wire 9 is relatively long, the leftmost first clamping member 821 and the rightmost second clamping member 822 are in a clamping state. Both the first clamping member 821 and the second clamping member 822 are in a monitoring state. The second clamping member 822 in the monitoring state reciprocates between two adjacent first clamping members 821 to maintain the temperature of this section of the steel wire 9. The leftmost first clamping member 821 remains relatively stationary with respect to the steel wire 9, while the rightmost second clamping member 822 is driven to the right by the corresponding second linear drive member 823 to stretch the heated section of the steel wire 9. The first clamping member 821 and the second clamping member 822 in the monitoring state provide support for the steel wire 9.
[0068] It should be noted that whether dealing with localized short-segment protrusions or continuous diameter fluctuations, the problem can be effectively addressed by adjusting the number of tensioning components 82 involved in the work, the heating power, and the amount of tension, enabling the production line to adapt to the production of steel wire 9 products of various specifications and materials.
[0069] This invention utilizes a pretreatment furnace 8 positioned between the wire feeding frame 1 and the heat treatment furnace 2, along with an integrated mobile heating assembly 81, multiple sets of stretching assemblies 82 with three operating modes (preparation, monitoring, and clamping), and a drive assembly 83. This enables online, adaptive correction of uneven diameter sections of the steel wire 9 during operation. A detection device at the inlet identifies uneven diameter sections in real time, controlling the mobile heating assembly 81 to perform tracking-type localized heating. The drive assembly 83 then drives a corresponding number of stretching assemblies 82 to coordinate and precisely stretch the heated sections. Through closed-loop coordinated control of detection, heating, and stretching, this system proactively eliminates uneven diameter of the steel wire 9 at its source, rather than passively adapting. This significantly improves the stability of subsequent heat treatment processes and the consistency of the finished steel wire 9's performance, while also enhancing the production line's intelligence, production efficiency, and product qualification rate.
[0070] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. An intelligent heat treatment line with adaptive steel wire tension, comprising a wire feeding frame, a heat treatment furnace, a salt quenching tank, a first cooling device, a tempering device, a second cooling device, and a take-up frame arranged sequentially, characterized in that, It also includes a pretreatment furnace located between the wire feeding rack and the heat treatment furnace; The pretreatment furnace is equipped with a movable heating component capable of locally heating the running steel wire, multiple stretching components capable of clamping and stretching the heated steel wire, and a drive component that drives the multiple stretching components to move along the running direction of the steel wire. The pretreatment furnace is configured such that when there are uneven diameter sections in the steel wire, the moving heating assembly is controlled to locally heat the section, and a corresponding number of stretching assemblies are controlled to stretch and straighten the heated section.
2. The heat treatment line according to claim 1, characterized in that, Each set of stretching components includes a first clamping member and a second clamping member that can move closer to or further away from each other. The first clamping member and the second clamping member both have a ready state, a monitoring state, and a clamping state. The pretreatment furnace selectively activates a corresponding number of stretching components for stretching according to the length of the section on the steel wire that needs to be corrected.
3. The heat treatment line according to claim 2, characterized in that, The first clamping member is provided with a second linear drive member, and the movable part of the second linear drive member is connected to the second clamping member to drive the second clamping member to move closer to or away from the first clamping member.
4. The heat treatment line according to claim 3, characterized in that, The preparatory state is when the first clamping member or the second clamping member is away from the steel wire. The monitoring state is when the first clamping member or the second clamping member is wrapped around the steel wire but not in contact with it. The monitoring state can monitor the temperature and diameter of the steel wire. The clamping state is when the first clamping member or the second clamping member clamps the steel wire.
5. The heat treatment line according to claim 4, characterized in that, Both the first clamping member and the second clamping member are equipped with heating devices, and the heating devices can be activated only when the first clamping member or the second clamping member is in monitoring mode.
6. The heat treatment line according to claim 5, characterized in that, When multiple sets of tensioning components work together to stretch a section of steel wire, the first clamping member and the second clamping member located at both ends of the steel wire are in a clamping state, the first clamping member and the second clamping member located at other positions of the steel wire are in a monitoring state, and the first clamping member and the second clamping member of the other tensioning components that do not participate in stretching the steel wire are in a ready state.
7. The heat treatment line according to claim 6, characterized in that, The second clamping member in the monitoring state can be driven by the second linear drive member to reciprocate between the adjacent first clamping members to heat and keep the steel wire in the area and monitor its diameter. The second clamping member in the clamping state can move relative to the first clamping member in the clamping state to stretch the steel wire between the two.
8. The heat treatment line according to claim 1, characterized in that, The movable heating assembly includes a heating element that can be sleeved on a steel wire, and a first linear drive element that drives the heating element to move along the axis of the steel wire.
9. The heat treatment line according to claim 1, characterized in that, The pretreatment furnace is equipped with a detection device at its entrance for real-time detection and recording of the wire diameter.
10. The heat treatment line according to claim 1, characterized in that, The pretreatment furnace is also equipped with a guide component that is slidably connected to the stretching component, which is used to guide the stretching component that affects the steel wire to move along a direction parallel to the running direction of the steel wire.