Intelligent heat treatment furnace for heat treatment of automobile parts

Abstract

The application relates to the technical field of automobile part processing equipment, and particularly discloses an intelligent heat treatment furnace for automobile part heat treatment, which comprises a heat treatment furnace, a support fixedly installed in the heat treatment furnace, a conveying belt penetrating through the heat treatment furnace and capable of moving relative to the support, a plurality of groups of auxiliary mechanisms arranged on the conveying belt in the length direction at intervals, each group of auxiliary mechanisms comprising a connecting piece moving with the conveying belt, a pushing rod, a mounting rod and a pressing rod arranged on the connecting piece, a driving assembly on the support and the auxiliary mechanisms are matched, the pushing rod and the mounting rod are switched between a limiting state and a turnover state, a transmission assembly is arranged between the pressing rod and the mounting rod, and the pressing rod is driven to move downward when the mounting rod is turned over; the limiting state prevents the automobile parts from being stacked, the turnover state forces the automobile parts to roll, the heating dead angle is eliminated, and the heat treatment quality and consistency are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of automotive parts processing equipment technology, and specifically to an intelligent heat treatment furnace for automotive parts heat treatment. Background Technology

[0002] In the automotive industry, automotive parts (such as fasteners, coil springs, and bearing rings) typically undergo heat treatment processes such as quenching and tempering after forming to improve their hardness, wear resistance, and fatigue strength. Currently, continuous production is mainly achieved using mesh belt heat treatment furnaces. Existing mesh belt heat treatment furnaces usually consist of a furnace body and a metal mesh belt running through the furnace body. Workpieces are placed on the mesh belt and move through the heating zone. However, this traditional conveying method has significant drawbacks during loading and conveying: parts are prone to disordered stacking, resulting in insufficient contact between the central parts and the heating atmosphere, leading to uneven heating and affecting the consistency of product quality. Chinese patent document CN119800042B discloses a high-efficiency and uniform heat treatment device and method for automotive fastener production, including a mesh belt quenching furnace and a mounting frame. The mesh belt quenching furnace has a discharge port at its left end and a feed port at its right end. The left end of the mesh belt quenching furnace has a quenching pool, and the right end of the mesh belt quenching furnace has a drying device. The mounting frame has an installation mechanism on its inner side. This device, by setting an adjustable limiting structure on the mounting frame, can adaptively adjust the limiting according to the thickness specifications of the nuts and fasteners, avoiding stacked nuts from passing through, ensuring that the nuts and fasteners in the mesh belt quenching furnace are spread out in sheets, and improving the uniformity of heating.

[0003] However, for cylindrical or helical parts (such as automotive suspension springs and valve springs), the above-mentioned heat treatment device has the following problems: First, because such parts have an open helical structure or an easily rolling circular outline, during the conveyor belt process, due to the mechanical vibration of the conveyor belt itself or the inertia of the running speed fluctuation, adjacent parts are very likely to shift in position, resulting in parts blocking each other or even entanglement; Second, when parts lie flat on the conveyor belt, the side in contact with the conveyor belt often heats up more slowly, resulting in uneven heating in the circumferential direction of the same part and thermal stress deformation. Summary of the Invention

[0004] This invention provides an intelligent heat treatment furnace for heat treatment of automotive parts, aiming to solve the problem in related technologies that automotive parts are prone to uneven heating during heat treatment due to stacking and fixed posture, which in turn affects the consistency of product quality.

[0005] A smart heat treatment furnace for heat treatment of automotive parts includes a heat treatment furnace, a support fixedly installed inside the heat treatment furnace, and a conveyor belt that runs through the heat treatment furnace and is able to move relative to the support. Multiple sets of auxiliary mechanisms are spaced apart along the length of the conveyor belt. Each auxiliary mechanism includes a connector that moves synchronously with the conveyor belt, as well as a push rod, a mounting rod, and a pressing rod mounted on the connector. The push rod and the mounting rod are rotatably mounted on the connector. A drive assembly that cooperates with the auxiliary mechanism is provided on the bracket. The drive assembly is used to drive the push rod and the mounting rod to switch between a limited state and a flipping state during the operation of the conveyor belt. The pressing rod is slidably mounted on the mounting rod along the length direction of the mounting rod, and a transmission assembly is provided between the two. The transmission assembly is used to drive the pressing rod to produce a downward displacement relative to the mounting rod when the mounting rod rotates to the flipping state. In the limiting state, the push rod and mounting rod are arranged vertically on both sides of the conveyor belt to limit the movement of the parts and prevent them from stacking. In the flipping state, the push rod and mounting rod rotate to push the parts, and in conjunction with the synchronous pressing action of the pressing rod, force the parts to roll, thereby changing the posture and heating surface of the parts on the conveyor belt.

[0006] The advantages are as follows: This invention solves the problems of easy stacking and uneven heating of automotive parts by setting an auxiliary mechanism on the conveyor belt. First, the auxiliary mechanism is controlled by the drive component to switch between a limiting state and a flipping state. In the limiting state, the vertically arranged push rods and mounting rods form a physical barrier, using the gravity of the parts to block and align them, effectively preventing the parts from stacking and obstructing each other during the conveying process. Second, the transmission component converts the rotational motion of the mounting rods into the linear motion of the pressing rods. In the flipping state, the parts are simultaneously subjected to the pushing force of the push rods and mounting rods, as well as the vertical pressure of the pressing rods. These three forces work together to form an eccentric rolling torque, forcing the parts to roll on the conveyor belt, changing the heating surface of the parts, eliminating heating dead zones, and significantly improving the heat treatment quality.

[0007] Preferably, the auxiliary mechanism further includes a first rotating shaft and a second rotating shaft rotatably mounted on the connecting member. The lower end of the push rod is fixedly connected to the first rotating shaft, and the lower end of the mounting rod is fixedly connected to the second rotating shaft. The drive assembly includes a first drive structure for driving the first rotating shaft to rotate and a second drive structure for driving the second rotating shaft to rotate. When the first and second drive structures work simultaneously, causing the first and second rotating shafts to rotate synchronously, the push rod, mounting rod, and pressing rod work together to flip and roll the parts. When the first drive structure works while the second drive structure does not work, causing the first rotating shaft to rotate while the second rotating shaft remains stationary, only the push rod moves to push the parts to slide on the conveyor belt, while the mounting rod and pressing rod remain in a limited position. The effect is that by setting a dual-drive structure, the auxiliary mechanism has two different process modes: "coordinated flipping" and "simple sliding". When both rotate synchronously, the components are forced to roll, which changes the heating surface. When only the drive shaft rotates, the mounting rod remains vertically limited, and the push rod pushes the components to slide, effectively changing the specific contact point between the components and the conveyor belt, avoiding local overcooling or overheating, and further improving the heat treatment quality.

[0008] Preferably, the transmission assembly includes a gear fixedly mounted on the connector and a rack fixedly connected to the lower pressure rod. The rack is arranged along the length of the mounting rod and meshes with the gear for transmission. When the rotating shaft rotates, the gear drives the rack to move, thereby driving the lower pressure rod to produce a downward displacement relative to the mounting rod.

[0009] Preferably, drive structure one includes a guide block one fixedly disposed on the inner wall of one side of the support, and drive block one fixedly connected to the end of the rotating shaft one. Drive structure two includes a guide block two fixedly disposed on the inner wall of the other side of the support, and drive block two fixedly connected to the end of the rotating shaft two. The lower surfaces of guide block one and guide block two are provided with undulating contours extending along the conveying direction and used to control the rotation angle. During the operation of the conveyor belt, drive block one cooperates with the undulating contours of guide block one to drive the rotating shaft one to rotate, and drive block two cooperates with the undulating contours of guide block two to drive the rotating shaft two to rotate.

[0010] Preferably, guide block one is continuously arranged along the entire length of the conveyor belt, and guide block two is intermittently arranged along the entire length of the conveyor belt. In the area where guide block two is arranged, rotating shaft one and rotating shaft two rotate synchronously, driving the push rod, mounting rod and pressing rod to move and flip the parts. In the area where guide block two is disconnected, rotating shaft two does not rotate, and mounting rod and pressing rod remain in the limit state. At this time, only rotating shaft one drives the push rod to rotate, thereby pushing the parts.

[0011] Preferably, the connector includes a connecting rod one and a connecting rod two. One end of each connecting rod one and the connecting rod two is fixedly connected to the inner surface of the conveyor belt, and the other end is rotatably engaged with the rotating shaft one and the rotating shaft two, respectively, so that the rotating shaft one and the rotating shaft two are suspended below the conveyor belt and can move synchronously with the conveyor belt. A through movable groove is provided on the conveyor belt at the position corresponding to the auxiliary mechanism. The push rod, the mounting rod and the pressing rod pass through the movable groove from below the conveyor belt and extend to the top of the conveyor belt.

[0012] Preferably, an elastic element 1 for driving the first rotating shaft to reset is provided between the first rotating shaft and the first connecting rod, and an elastic element 2 for driving the second rotating shaft to reset is provided between the second rotating shaft and the second connecting rod.

[0013] Preferably, the pressing rod includes a sliding part that slides with the mounting rod, and a pressing part located at the top of the sliding part and extending to one side to press the component. The lower surface of the pressing part has a guide slope, which guides the component to slide down when the auxiliary mechanism moves to the end of the conveyor belt, preventing the component from getting stuck at the corner where the sliding part and the pressing part meet. The effect is that when the auxiliary mechanism runs to the end of the conveyor belt and flips downwards for return, the guide slope acts as a slide, guiding the component to smoothly slide off the conveyor belt, effectively preventing accumulation and jamming at the outlet.

[0014] Preferably, the working surfaces of the push rod, mounting rod, and pressing rod that come into contact with the components are coated with a protective layer. The protective layer is made of a high-temperature resistant material, and its surface hardness is lower than that of the components. The effect is that by applying a protective layer to the working surfaces, physical damage such as scratches and dents caused by hard rods to the surface of automotive components can be effectively prevented.

[0015] Preferably, the conveyor belt is gradually inclined downwards from the beginning to the end, allowing components to roll down the inclined conveyor belt and abut against the push rod and mounting rod, thus limiting the movement of the components. The effect is that after the components are placed on the conveyor belt, they automatically roll and adhere tightly to the auxiliary mechanism in the limiting state, achieving automatic aggregation and neat arrangement of the components, providing a unified initial position reference for subsequent flipping operations.

[0016] By adopting the above technical solution, the beneficial effects of the present invention are as follows: 1. This invention includes an auxiliary mechanism that can be driven by a drive component to switch between a limiting state and a flipping state. In the limiting state, the vertically arranged push rods and mounting rods, in conjunction with the inclined conveyor belt, enable automatic alignment and blocking of parts, effectively preventing cross-stacking of parts. In the flipping state, the rotation of the push rods and mounting rods, along with the synchronous downward pressure of the pressing rods, applies an eccentric rolling torque to the parts, forcing them to roll on the conveyor belt, eliminating heating dead zones and significantly improving heat treatment quality.

[0017] 2. By continuously setting the first guide block and intermittently setting the second guide block, the present invention enables the auxiliary mechanism to automatically switch between two action modes: "cooperative flipping" and "simple sliding". The cooperative flipping mode is used to change the heating surface of the parts and eliminate heating dead angles, while the simple sliding mode is used to change the contact point between the parts and the conveyor belt, avoiding local overheating or undercooling caused by long-term contact with the same position of the conveyor belt, thereby further improving the heat treatment quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the assembly structure of the conveyor belt and auxiliary mechanism of the present invention.

[0020] Figure 3 This is a partial cross-sectional view of the conveyor belt and auxiliary mechanism of the present invention.

[0021] Figure 4 This is a schematic diagram of the structure of guide block one and guide block two of the present invention.

[0022] Figure 5 This is a schematic diagram of the auxiliary mechanism of the present invention.

[0023] Figure 6 This is a schematic diagram of the transmission component of the present invention.

[0024] Figure label: 1. Heat treatment furnace; 21. Support frame; 22. Conveyor belt; 221. Movable trough; 3. Auxiliary mechanism; 31. Push rod; 32. Mounting rod; 33. Pressing rod; 331. Sliding part; 332. Pressing part; 34. Gear; 35. Rack; 36. Connecting rod one; 37. Connecting rod two; 41. Rotating shaft one; 42. Rotating shaft two; 43. Guide block one; 44. Drive block one; 45. Guide block two; 46. Drive block two. Detailed Implementation

[0025] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0026] like Figures 1-6 As shown, an intelligent heat treatment furnace for heat treatment of automotive parts includes a heat treatment furnace 1, a support 21, a conveyor belt 22, and an auxiliary mechanism 3.

[0027] like Figure 1 As shown, the heat treatment furnace 1, serving as the main frame of the entire device, is typically made of refractory material with high temperature resistance and good thermal insulation properties, and is externally encased in a high-strength steel frame to ensure structural stability under high-temperature conditions. In this embodiment, the heat treatment furnace 1 adopts a box-type structure with inlet and outlet ports at both ends. Heating elements are arranged on the top and sides of the inner cavity, thus forming a long, narrow high-temperature heating channel inside the heat treatment furnace 1 for quenching, tempering, or normalizing automotive parts (taking a coil spring as an example).

[0028] like Figure 1 As shown, the bracket 21 is fixedly installed on the inner bottom of the heat treatment furnace 1, serving as a stationary reference component for supporting and installing the conveyor belt 22. The bracket 21 adopts an integral welded structure and is made of high-temperature resistant stainless steel. This material has good high-temperature resistance and corrosion resistance, can work stably in high-temperature environments for a long time, and has high mechanical strength and is not easily deformed.

[0029] like Figure 1 and Figure 2 As shown, the conveyor belt 22 passes through the furnace chamber of the heat treatment furnace 1 and is driven by an external drive motor (not shown) for cyclic operation. The conveyor belt 22 is preferably made of a high-temperature resistant alloy mesh belt, which has good air permeability and load-bearing capacity. In this embodiment, the conveyor belt 22 is gradually inclined downwards from its starting end on the feed inlet side to its ending end on the discharge outlet side, with the inclination angle preferably set between 5° and 15°. When a component is placed on the conveyor belt 22, it tends to roll towards the end in the conveying direction. This tendency allows the component to naturally abut against the auxiliary mechanism 3, preventing it from running around due to vibration during conveying.

[0030] like Figure 2 As shown, in order to solve the problem that parts are easily stacked in the heat treatment furnace 1 and that uneven heating is caused by their fixed posture, multiple sets of auxiliary mechanisms 3 are evenly spaced along the length of the conveyor belt 22. The spacing of each set of auxiliary mechanisms 3 is designed to be slightly larger than the diameter of the parts to be processed, thereby dividing the conveyor belt 22 into several independent processing units, ensuring that each unit can only accommodate a single row of parts.

[0031] like Figures 2-6 As shown, each auxiliary mechanism 3 includes a connecting member that moves synchronously with the conveyor belt 22, and a push rod 31, a mounting rod 32, and a pressing rod 33 disposed on the connecting member. To facilitate the cooperation between the auxiliary mechanism 3 and the conveyor belt 22, a through-hole movable groove 221 is provided on the conveyor belt 22 corresponding to the position of each auxiliary mechanism 3. The movable groove 221 extends along the width direction of the conveyor belt 22, and its size is slightly larger than the motion envelope of the auxiliary mechanism 3 to prevent interference.

[0032] The connecting components include connecting rod 36 and connecting rod 37. The upper ends of connecting rod 36 and connecting rod 37 are fixedly connected to the inner surface of the conveyor belt 22 by welding or high-temperature bolts, and extend downwards. At the lower ends of connecting rod 36 and connecting rod 37, rotating shafts 41 and 42 are respectively mounted via bearings, allowing rotating shafts 41 and 42 to move synchronously with the conveyor belt 22 and rotate relative to the conveyor belt 22 around their own axes. The lower end of push rod 31 is fixed to rotating shaft 41 via a key connection, and the lower end of mounting rod 32 is fixed to rotating shaft 42 via a key connection. Push rod 31 and mounting rod 32 extend upwards through the movable groove 221 on the conveyor belt 22, reaching above the conveyor belt 22. When rotating shafts 41 and 42 rotate, push rod 31 and mounting rod 32 swing within the movable groove 221, providing a horizontal active thrust to the components.

[0033] In the initial state, the push rod 31 and the mounting rod 32 are arranged vertically and parallel to each other on both sides of the conveyor belt 22. At this time, under the action of gravity of the inclined conveyor belt 22, the front side of the parts abuts against the push rod 31 and the mounting rod 32, achieving limiting and blocking, confining each part within a specific area, effectively preventing the parts from colliding, stacking or sticking together due to vibration or acceleration and deceleration during the conveying process, and ensuring the heat treatment effect.

[0034] like Figures 3-6 As shown, the pressing rod 33 is slidably mounted on the mounting rod 32 along its length. Specifically, the pressing rod 33 includes a sliding part 331 and a pressing part 332. The sliding part 331 is designed as a rod and is embedded in a groove opened on the side of the mounting rod 32, achieving smooth linear sliding through cooperation. The pressing part 332 is located at the top of the sliding part 331 and extends horizontally towards the rear of the pushing rod 31, forming a cantilever structure.

[0035] To enable the movement of the pressing rod 33, a transmission assembly is provided between the pressing rod 33 and the mounting rod 32. The transmission assembly includes a gear 34 fixed to the connecting rod 37 and loosely fitted coaxially with the rotating shaft 42, and a rack 35 fixedly connected to the pressing rod 33. The rack 35 is positioned along the length of the mounting rod 32 at its front and meshes with the gear 34. When the rotating shaft 42 drives the mounting rod 32 to rotate, the mounting rod 32 undergoes angular displacement relative to the stationary gear 34. The rack 35, mounted on the mounting rod 32, revolves around the gear 34 while simultaneously displacing itself in its rotational direction, forcing the pressing rod 33 to move downwards relative to the mounting rod 32. Therefore, the transmission assembly can convert the rotational motion of the mounting rod 32 into linear movement of the pressing rod 33 without requiring an additional power source.

[0036] like Figures 2-6 As shown, in order to switch the push rod 31 and the mounting rod 32 between a vertically limited state and a tilted flipping state, a drive assembly that cooperates with the auxiliary mechanism 3 is provided on the bracket 21. The drive assembly is divided into two parts: a drive structure one for controlling the push rod 31 and a drive structure two for controlling the mounting rod 32.

[0037] Specifically, drive structure one includes a guide block 43 fixedly mounted on the inner wall of one side of the support 21, and a drive block 44 eccentrically connected to the end of the rotating shaft 41. Drive structure two includes a guide block 45 fixedly mounted on the inner wall of the other side of the support 21, and a drive block 46 eccentrically connected to the end of the rotating shaft 42. The lower surfaces of guide blocks 43 and 45 are not flat, but have undulating contours extending along the conveying direction. The upper surfaces of drive blocks 44 and 46 are both arc-shaped to reduce wear. During the operation of the conveyor belt 22, drive blocks 44 and 46, as follower components, slide along the undulating contours of the lower surfaces of guide blocks 43 and 45, respectively. When the contours change in height, drive blocks 44 and 46 are forced to deflect, thereby causing the rotating shafts 41 and 42 to rotate.

[0038] To ensure accurate repositioning of rotating shaft 41 and rotating shaft 42, an elastic element (not shown in the figure) is provided between rotating shaft 41 and connecting rod 36, and an elastic element (not shown in the figure) is provided between rotating shaft 42 and connecting rod 37. The elastic elements are preferably high-temperature resistant torsion springs. When driving block 44 disengages from the protrusion of guide block 43, elastic element 1 releases energy, causing the push rod 31 to return to its vertical limit position. Similarly, when driving block 46 disengages from the protrusion of guide block 45, elastic element 2 releases energy, causing the mounting rod 32 to return to its vertical limit position.

[0039] In this embodiment, guide block 43 is continuously arranged along the entire length of conveyor belt 22, which means that push rod 31 is always oscillating periodically throughout the heat treatment process. Guide block 45, on the other hand, is arranged intermittently. In the area where guide block 45 is arranged, shaft 42 is driven to rotate, causing mounting rod 32 to swing and pressing rod 33 to extend. At the same time, shaft 41 is driven to rotate by drive structure 1, causing push rod 31 to swing. At this time, with the coordinated action of push rod 31, mounting rod 32 and pressing rod 33, an eccentric rolling torque is applied to the parts, forcing the parts to roll on conveyor belt 22. The rolling exposes the bottom of the parts that were originally close to the mesh belt and had a lower temperature, allowing them to receive radiant heating in the furnace, effectively eliminating heat treatment deformation caused by uneven heating. In the disconnected area of ​​guide block 2 45, shaft 2 42 is reset under the action of elastic element 2, mounting rod 32 returns to the vertical state, and pressing rod 33 retracts. At this time, since guide block 1 43 still exists, shaft 1 41 is driven to rotate again, causing push rod 31 to swing and push the parts to slide on conveyor belt 22, changing the specific contact point between the parts and conveyor belt 22, and avoiding local overcooling or overheating.

[0040] Furthermore, to prevent mechanical damage to the components during sliding or rolling, a protective layer is applied to the working surfaces of the push rod 31, mounting rod 32, and pressing rod 33 that come into contact with the components, namely the side surfaces of the rods and the bottom surface of the pressing part 332. The protective layer is preferably made of a high-temperature resistant material, and its surface hardness is lower than that of the components to avoid leaving scratches on the surface of the components.

[0041] like Figures 3-6 As shown, the lower surface of the pressing part 332 is provided with an inclined guide ramp. When the auxiliary mechanism 3 moves to the end of the conveyor belt 22, the parts need to disengage from the auxiliary mechanism 3. At this time, the guide ramp can guide the parts to slide smoothly into the quenching oil tank or the collection basket of the next process, effectively preventing the parts from getting stuck at the connecting corner of the sliding part 331 and the pressing part 332, ensuring the continuity and safety of the discharge.

[0042] Based on the above-described device, the working process and working principle of the present invention are as follows: When the production line starts, automotive parts (taking coil springs as an example) are evenly fed onto the first end of conveyor belt 22 via an automatic feeder. Because conveyor belt 22 is inclined, the springs naturally roll backward the moment they land on it. At this time, since they have not yet entered the area where guide blocks 43 and 45 are positioned, shafts 41 and 42 remain in their initial positions under the action of the torsion springs, while push rod 31 and mounting rod 32 stand vertically above conveyor belt 22. The backward-rolling springs abut against the rear sides of mounting rod 32 and push rod 31, blocking them and achieving automatic alignment. This eliminates the possibility of springs overlapping and lays the foundation for subsequent uniform heating.

[0043] As the conveyor belt 22 continues forward, the auxiliary mechanism 3 carries the spring into the heating core area of ​​the heat treatment furnace 1. When the auxiliary mechanism 3 passes the area where the guide block 2 45 is set, the drive block 2 46 contacts the undulating contour of the guide block 2 45. Under the guidance of the guide block 2 45, the drive block 2 46 drives the rotating shaft 2 42 to rotate, thereby causing the mounting rod 32 to tilt and swing towards the spring, applying a horizontal thrust to the spring. With the rotation of the mounting rod 32, the gear 34 and rack 35 begin to move, driving the pressing rod 33 to move downward. At the same time, the guide block 1 43 also drives the rotating shaft 1 41 to rotate, causing the push rod 31 to apply a horizontal thrust to the spring. At this time, with the coordinated action of the push rod 31, the mounting rod 32 and the pressing rod 33, the spring is forced to overcome its own inertia and roll backward on the conveyor belt 22, changing the heated surface of the spring and realizing the alternation of the heated surface.

[0044] When the auxiliary mechanism 3 passes through the disconnected area of ​​the guide block 45, the driving force disappears. The rotating shaft 42 resets under the action of the elastic element 2, the pressing rod 33 retracts, and the mounting rod 32 returns to the vertical limit state. At this time, the guide block 43 still exists and has an undulating profile. The rotating shaft 41 continues to drive the push rod 31 to swing, pushing the spring to slide on the surface of the conveyor belt 22, changing the specific contact point between the spring and the conveyor belt 22, and avoiding local overcooling or overheating.

[0045] Throughout the heat treatment process, the auxiliary mechanism 3, under the control of guide block 43 and guide block 45, alternately executes three action modes: "limiting and preventing stacking," "cooperative flipping," and "simple sliding," achieving a fully automatic and intelligent heat treatment process. When the conveyor belt 22 reaches the discharge port, the auxiliary mechanism 3 flips downwards for return. At this time, the guide ramp on the lower pressure rod 33 guides the spring to disengage from the conveyor belt 22, completing the entire heat treatment process.

[0046] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An intelligent heat treatment furnace for heat treatment of automotive parts, comprising a heat treatment furnace (1), a support (21) fixedly installed inside the heat treatment furnace (1), and a conveyor belt (22) passing through the heat treatment furnace (1) and capable of running relative to the support (21), characterized in that, Multiple sets of auxiliary mechanisms (3) are arranged at intervals along the length of the conveyor belt (22); Each auxiliary mechanism (3) includes a connector that moves synchronously with the conveyor belt (22), and a push rod (31), a mounting rod (32), and a pressing rod (33) set on the connector. The push rod (31) and the mounting rod (32) are rotatably mounted on the connector. A drive assembly that cooperates with the auxiliary mechanism (3) is provided on the bracket (21). The drive assembly is used to drive the push rod (31) and the mounting rod (32) to switch between a limited state and a flipping state during the operation of the conveyor belt (22). The pressing rod (33) is slidably mounted on the mounting rod (32) along the length direction of the mounting rod (32), and a transmission assembly is provided between the two. The transmission assembly is used to drive the pressing rod (33) to produce a downward displacement relative to the mounting rod (32) when the mounting rod (32) rotates to the flipping state. In the limited position, the push rod (31) and the mounting rod (32) are vertically arranged on both sides of the conveyor belt (22) to limit the parts and prevent them from stacking. In the flipped position, the push rod (31) and the mounting rod (32) rotate to push the parts, and cooperate with the synchronous pressing action of the pressing rod (33) to force the parts to roll, so as to change the posture and heating surface of the parts on the conveyor belt (22).

2. The intelligent heat treatment furnace for heat treatment of automotive parts according to claim 1, characterized in that, The auxiliary mechanism (3) also includes a rotating shaft one (41) and a rotating shaft two (42) rotatably mounted on the connector. The lower end of the push rod (31) is fixedly connected to the rotating shaft one (41), and the lower end of the mounting rod (32) is fixedly connected to the rotating shaft two (42). The drive assembly includes a drive structure one for driving the rotating shaft one (41) to rotate and a drive structure two for driving the rotating shaft two (42) to rotate. When the drive structure one and the drive structure two work at the same time, causing the rotating shaft one (41) and the rotating shaft two (42) to rotate synchronously, the push rod (31), the mounting rod (32) and the pressing rod (33) work together to flip and roll the parts. When the drive structure one works and the drive structure two does not work, causing the rotating shaft one (41) to rotate and the rotating shaft two (42) to remain stationary, only the push rod (31) moves to push the parts to slide on the conveyor belt (22), while the mounting rod (32) and the pressing rod (33) remain in the limit state.

3. The intelligent heat treatment furnace for heat treatment of automotive parts according to claim 2, characterized in that, The transmission assembly includes a gear (34) fixedly mounted on the connector and a rack (35) fixedly connected to the lower pressure rod (33). The rack (35) is arranged along the length of the mounting rod (32) and meshes with the gear (34) for transmission. When the rotating shaft (42) rotates, the gear (34) drives the rack (35) to move, thereby driving the lower pressure rod (33) to produce a downward displacement relative to the mounting rod (32).

4. The intelligent heat treatment furnace for heat treatment of automotive parts according to claim 2, characterized in that, The first drive structure includes a guide block (43) fixedly mounted on the inner wall of one side of the bracket (21) and a drive block (44) fixedly connected to the end of the rotating shaft (41). The second drive structure includes a guide block (45) fixedly mounted on the inner wall of the other side of the bracket (21) and a drive block (46) fixedly connected to the end of the rotating shaft (42). The lower surfaces of the guide block (43) and the guide block (45) are provided with undulating contours that extend along the conveying direction and are used to control the rotation angle. During the operation of the conveyor belt (22), the undulating contours of the drive block (44) and the guide block (43) cooperate to drive the rotating shaft (41) to rotate, and the undulating contours of the drive block (46) and the guide block (45) cooperate to drive the rotating shaft (42) to rotate.

5. The intelligent heat treatment furnace for heat treatment of automotive parts according to claim 4, characterized in that, Guide block one (43) is continuously set along the entire length of the conveyor belt (22), and guide block two (45) is set intermittently along the entire length of the conveyor belt (22). In the setting area of ​​guide block two (45), rotating shaft one (41) and rotating shaft two (42) rotate synchronously, driving the push rod (31), mounting rod (32) and pressing rod (33) to move and flip the parts. In the disconnected area of ​​guide block two (45), rotating shaft two (42) does not rotate, and mounting rod (32) and pressing rod (33) remain in the limit state. At this time, only rotating shaft one (41) drives the push rod (31) to rotate, thereby pushing the parts.

6. The intelligent heat treatment furnace for heat treatment of automotive parts according to claim 2, characterized in that, The connector includes a connecting rod 1 (36) and a connecting rod 2 (37). One end of the connecting rod 1 (36) and the connecting rod 2 (37) are fixedly connected to the inner surface of the conveyor belt (22), and the other end is rotatably engaged with the rotating shaft 1 (41) and the rotating shaft 2 (42) respectively, so that the rotating shaft 1 (41) and the rotating shaft 2 (42) are suspended below the conveyor belt (22) and can move synchronously with the conveyor belt (22). A through movable groove (221) is provided on the conveyor belt (22) at the position corresponding to the auxiliary mechanism (3). The push rod (31), the mounting rod (32) and the pressing rod (33) pass through the movable groove (221) from below the conveyor belt (22) and extend to the top of the conveyor belt (22).

7. The intelligent heat treatment furnace for heat treatment of automotive parts according to claim 6, characterized in that, An elastic element is provided between the first rotating shaft (41) and the first connecting rod (36) for driving the first rotating shaft (41) to reset, and an elastic element is provided between the second rotating shaft (42) and the second connecting rod (37) for driving the second rotating shaft (42) to reset.

8. The intelligent heat treatment furnace for heat treatment of automotive parts according to claim 1, characterized in that, The pressing rod (33) includes a sliding part (331) that slides with the mounting rod (32), and a pressing part (332) that is provided at the top of the sliding part (331) and extends to one side to press the component. The lower surface of the pressing part (332) has a guide slope, which is used to guide the component to slide down when the auxiliary mechanism (3) moves to the end of the conveyor belt (22) to prevent the component from getting stuck at the corner where the sliding part (331) and the pressing part (332) are connected.

9. The intelligent heat treatment furnace for heat treatment of automotive parts according to claim 1, characterized in that, The working surfaces of the push rod (31), mounting rod (32) and pressing rod (33) that come into contact with the parts are coated with a protective layer. The protective layer is made of high temperature resistant material and the surface hardness of the protective layer is lower than that of the parts.

10. The intelligent heat treatment furnace for heat treatment of automotive parts according to claim 1, characterized in that, The conveyor belt (22) is set to gradually slope downward from the beginning to the end, and the parts can roll down along the inclined conveyor belt (22) and abut against the push rod (31) and the mounting rod (32) to limit the movement of the parts.

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