Heat treatment device for machining steel for automobile fasteners

Abstract

The invention discloses a heat treatment device for machining steel for automobile fasteners, and relates to the technical field of automobile fastener steel machining, the heat treatment device comprises a workbench, a vertical rod is fixed to a feeding station on the left side of the workbench, a material guide plate is obliquely fixed to the vertical rod, a bolt is slidably connected to the material guide plate, a driving mechanism is fixed to the workbench, and the driving mechanism is fixed to the left side of the workbench. The driving mechanism is used for achieving the continuous conveying effect of bolts, and a positioning mechanism is installed on the driving mechanism. According to the heat treatment device for machining the steel for the automobile fastener, the adjusting mechanism drives a positioning plate to move up and down through sliding fit of an ejector rod and a third inclined panel, automatic adjustment of the lower end position of a bolt rod part is achieved, the machining requirements of bolts with different lengths can be met without replacing a positioning part, and the machining efficiency is improved. The problems that an existing device is poor in universality and tedious in debugging are effectively solved, the cost of production equipment is reduced, the debugging time is shortened, the application range of the equipment is widened, and the requirement for multi-specification production of automobile fasteners is met.

Description

Technical Field

[0001] This invention relates to the field of automotive fastener steel processing technology, specifically to a heat treatment apparatus for processing automotive fastener steel. Background Technology

[0002] As core connecting parts in the automotive structure, automotive fasteners (such as bolts) directly determine the safety and reliability of the vehicle's operation due to their strength, hardness, and wear resistance. Heat treatment (especially quenching) is a key process for improving the mechanical properties of steel used in automotive fasteners. Currently, in the production process of automotive fasteners, the heat treatment of fasteners such as bolts is mostly carried out by manual feeding, positioning, or semi-automated equipment, which presents many technical challenges. The current heat treatment equipment relies heavily on manual labor to place bolts one by one into the processing station. This is not only labor-intensive and inefficient, but also prone to errors due to human operation, which can lead to deviations in bolt placement and affect the subsequent heat treatment effect. Although some semi-automatic feeding equipment can achieve continuous bolt conveying, it lacks an effective positioning mechanism. Bolts are prone to displacement and shaking during conveying and heat treatment, resulting in inaccurate quenching positions, uneven quenching of bolt shanks, and insufficient hardness, which cannot meet the high-precision processing requirements of automotive fasteners. Automobile production requires bolts of different lengths and specifications. Existing heat treatment equipment often uses fixed positioning and support structures, which cannot be flexibly adjusted according to bolt length. When performing positioning quenching on the lower end of the bolt shank, it is necessary to replace the positioning components with suitable ones to meet the processing requirements of bolts of different specifications. This is cumbersome, lacks versatility, and increases production costs and equipment debugging time. In addition, during the quenching process, the bolts are mostly in a static state, which can easily lead to incomplete and uneven quenching of the shank, further affecting the mechanical properties of the bolts. This makes it difficult to meet the automotive industry's demand for high-quality and high-efficiency fastener production. Summary of the Invention

[0003] The purpose of this invention is to provide a heat treatment apparatus for processing steel for automotive fasteners, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a heat treatment device for processing steel for automotive fasteners, comprising a worktable, a vertical rod fixed at the loading station on the left side of the worktable, a guide plate fixed obliquely on the vertical rod, bolts slidably connected to the guide plate, a driving mechanism fixed on the worktable for continuous conveying of bolts, a positioning mechanism installed on the driving mechanism for automatic positioning of bolts, and an adjustment mechanism installed on the driving mechanism, wherein the adjustment mechanism and the positioning mechanism are distributed in a one-to-one correspondence, and the adjustment mechanism is used to adjust the height of bolts of different lengths.

[0005] Preferably, a first inclined panel is fixed at the loading station on the left side of the workbench, and a second inclined panel is fixed at the unloading station on the rear side of the workbench. A collection box placed on the workbench is provided on the side of the second inclined panel. Through the function of the first and second inclined panels, a basic guarantee can be provided for the automatic unlocking of bolts, thereby providing a basic guarantee for the automatic loading and unloading of bolts, and thus ensuring the normal operation of the device.

[0006] Preferably, the collection box is provided with a support rod fixed to the workbench on the side, and a material feeding plate is fixed to the upper end of the support rod. The support rod is inclined. The heat-treated bolts can be collected through the collection box, and the material feeding plate can provide a basic guarantee for the automatic feeding and collection of bolts.

[0007] Preferably, the driving mechanism includes a geared motor fixed to the upper surface of the worktable, and a turntable is fixed to the output end of the geared motor. A support rod is fixed at an equal angle to the lower surface of the turntable, and a first ball bearing is installed at the lower end of the support rod. The first ball bearing contacts and rolls with the upper surface of the worktable. The geared motor can drive the turntable to rotate at a uniform speed, thereby providing a basic guarantee for the switching of bolt positions and ensuring the normal progress of bolt processing. When the turntable rotates, the rolling action between the first ball bearing and the worktable and the supporting action of the support rod can ensure the stability of the turntable rotation.

[0008] Preferably, the turntable has positioning grooves at equal angles, and the width of the positioning grooves is greater than the diameter of the bolt shank and less than the diameter of the bolt head. At the same time, second balls mounted on the turntable are evenly arranged on the side of the positioning grooves. The second balls can roll when in contact with the bolt head. By positioning the dimensions of the positioning grooves, the initial positioning of the bolt can be achieved, thereby ensuring the normal processing. Furthermore, the rolling action of the second balls can reduce the friction between the bolt and the turntable, thereby ensuring the normal loading and unloading of the turntable.

[0009] Preferably, the positioning mechanism includes a slide rod that is slidably connected to the turntable, and a circular plate is fixed on the slide rod. A spring is fixed between the circular plate and the turntable. A mounting plate is also fixed to the upper end of the slide rod. A rotatable rotating shaft is connected to the mounting plate, and a pressure plate is fixed to the lower end of the rotating shaft. The pressure plate contacts the bolt head to achieve positioning, and slides with the second ball bearing. The slide rod is slidably connected to the first and second inclined plates. The sliding action between the slide rod and the first and second inclined plates provides a basic force for the movement of the slide rod, mounting plate, and pressure plate. Combined with the sliding guide action between the slide rod and the turntable, the stability of the movement of the mounting plate and pressure plate can be ensured. The elastic action of the spring provides a basic guarantee for the reset of the mounting plate and pressure plate, and also provides a basic force for the tightening and fixing of the bolt, ensuring the stability of the bolt in subsequent processing.

[0010] Preferably, a friction wheel is fixed to the upper end of the rotating shaft, and the friction wheel and the arc-shaped friction plate are in a rolling connection. The friction plate is set at the heating station on the right side of the workbench, and one end of the friction plate is fixed to the fixed rod. The other end of the fixed rod is fixed to the workbench. Through the rolling action between the friction wheel and the friction plate, a basic force can be provided for the rotation of the rotating shaft, thereby driving the pressure plate and bolt to rotate, thus providing a basic guarantee for achieving comprehensive and uniform heating of the bolt.

[0011] Preferably, the adjustment mechanism includes a guide rod that is slidably connected to the turntable, and a limit plate is fixed to the upper end of the guide rod. The limit plate contacts the turntable to achieve positioning. At the same time, a base plate is fixed to the lower end of the guide rod. Through the sliding guidance between the guide rod and the turntable, the stability of the base plate movement can be ensured. Through the positioning of the limit plate in contact with the turntable, the lowest position of the base plate can be limited, preventing the guide rod from detaching from the turntable.

[0012] Preferably, a rotatable positioning plate is connected to the base plate, and the positioning plate is located directly below the pressure plate. A top rod is also fixed to the lower end face of the base plate, and the top rod is slidably connected to the third inclined plate. The third inclined plate is fixed to the heating station on the right side of the workbench. Through the cooperation of the positioning plate and the pressure plate, the bolt can be clamped and fixed, and the height of the lower end of the bolt shank can be limited to accommodate the quenching of the head of bolt shanks of different lengths. Furthermore, the sliding action between the top rod and the third inclined plate provides a basic force for the movement of the base plate and the positioning plate.

[0013] Preferably, the third inclined panel is located between two heating induction coils, and the heating induction coils are located at the heating position on the right side of the worktable. The heating induction coils are fixed to one end of the round rod, while the other end of the round rod is fixed to the worktable. Through the action of the heating induction coils, a basic guarantee can be provided for the quenching of the head of the bolt rod.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This heat treatment device for processing steel for automotive fasteners features a positioning mechanism that uses the elasticity of a spring to automatically press down a pressure plate, thereby clamping and positioning the bolts. Simultaneously, the first inclined plate acts as a guide, automatically releasing the pressure plate during bolt loading and automatically clamping the bolts after loading. This ensures smooth bolt loading and effectively prevents bolts from shifting or shaking during transport and heat treatment, ensuring the bolts remain in the preset processing position and guaranteeing the accuracy of subsequent quenching. Furthermore, the second ball bearing on the side of the positioning groove reduces friction between the bolt and the turntable, preventing scratches on the bolt surface and ensuring smooth bolt transport and positioning. 2. This heat treatment device for processing steel for automotive fasteners uses a guide plate and a vibrating feeding plate in combination. The inclined structure of the guide plate allows the bolts to slide down and arrange automatically under gravity. At the same time, the rotation of the turntable of the drive mechanism ensures that the positioning groove is precisely aligned with the guide plate, realizing automatic bolt feeding without manual intervention. This effectively reduces the intensity of manual labor, avoids human error, and greatly improves feeding efficiency and accuracy, making it suitable for the continuous processing needs of large batches of bolts. 3. This heat treatment device for processing steel for automotive fasteners features an adjustment mechanism that, through the sliding engagement of a push rod and a third inclined plate, drives the positioning plate to move up and down, automatically adjusting the position of the lower end of the bolt shank. This eliminates the need to replace positioning components, adapting to the processing requirements of bolts of different lengths. It effectively solves the problems of poor versatility and cumbersome debugging found in existing devices, reducing production equipment costs and debugging time, expanding the applicability of the equipment, and meeting the needs of multi-specification automotive fastener production. Furthermore, during the quenching process, the friction transmission between the friction wheel and the arc-shaped friction plate drives the rotating shaft, pressure plate, and bolt to rotate synchronously, ensuring that the lower end of the bolt shank fully contacts the heating induction coil, achieving uniform quenching. This effectively avoids problems such as uneven quenching and insufficient hardness caused by static quenching, significantly improving the mechanical properties of the bolt and ensuring that the bolt meets the safety and reliability requirements of automotive operation. Attached Figure Description

[0015] Figure 1 This is a frontal three-dimensional structural diagram of the overall composition of the device of the present invention; Figure 2 This is a bottom-view three-dimensional structural diagram of the overall composition of the device of the present invention; Figure 3 This is a frontal three-dimensional structural diagram of the turntable of the present invention; Figure 4 This is a three-dimensional structural diagram of the turntable of the present invention viewed from below; Figure 5 This is a frontal cross-sectional three-dimensional structural diagram of the turntable of the present invention; Figure 6 This is a frontal three-dimensional structural diagram of the positioning mechanism of the present invention; Figure 7 This is a frontal three-dimensional structural diagram of the adjustment mechanism of the present invention.

[0016] In the diagram: 1. Workbench; 101. First inclined panel; 102. Second inclined panel; 2. Vertical rod; 3. Guide plate; 4. Bolt; 5. Collection box; 501. Support rod; 502. Feeding plate; 6. Drive mechanism; 601. Gear motor; 602. Turntable; 603. Support rod; 604. First ball bearing; 605. Positioning groove; 606. Second ball bearing; 7. Positioning mechanism; 701. Slide rod; 702. Circular plate; 703. Spring; 704. Mounting plate; 705. Rotating shaft; 706. Pressure plate; 707. Friction wheel; 708. Friction plate; 709. Fixing rod; 8. Adjustment mechanism; 801. Guide rod; 802. Limiting plate; 803. Base plate; 804. Top rod; 805. Positioning plate; 9. Circular rod; 901. Heating induction coil; 902. Third inclined panel. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-7 This invention provides a technical solution: a heat treatment device for processing steel for automotive fasteners, comprising a workbench 1, a vertical rod 2 fixed at the loading station on the left side of the workbench 1, a guide plate 3 fixed obliquely on the vertical rod 2, a bolt 4 slidably connected on the guide plate 3, a drive mechanism 6 fixed on the workbench 1, the drive mechanism 6 being used to realize the continuous conveying of the bolt 4, a positioning mechanism 7 installed on the drive mechanism 6, the positioning mechanism 7 being used to realize the automatic positioning of the bolt 4, and an adjustment mechanism 8 also installed on the drive mechanism 6, and the adjustment mechanism 8 and the positioning mechanism 7 are distributed in a one-to-one correspondence, the adjustment mechanism 8 being used to realize the height adjustment of bolts 4 of different lengths.

[0019] The drive mechanism 6 includes a reduction motor 601 fixed to the upper surface of the worktable 1, and a turntable 602 fixed to the output end of the reduction motor 601. A support rod 603 is fixed at equal angles on the lower surface of the turntable 602. A first ball bearing 604 is installed at the lower end of the support rod 603. The first ball bearing 604 contacts and rolls with the upper surface of the worktable 1. A positioning groove 605 is opened at equal angles on the turntable 602. The width of the positioning groove 605 is greater than the diameter of the shank of the bolt 4 and less than the diameter of the head of the bolt 4. Second balls bearing 606 are evenly arranged on the side of the positioning groove 605 and installed on the turntable 602. The second balls bearing 606 contact the head of the bolt 4 and can roll. When using this heat treatment device for machining steel for automotive fasteners, such as Figures 1-7 As shown, the vibrating feeding plate and the guide plate 3 are first connected to each other. The vibrating feeding plate feeds the bolts 4 sequentially onto the guide plate 3. With the inclined structure of the guide plate 3, the bolts 4, which are evenly arranged on the guide plate 3, can automatically slide down under the action of gravity. When feeding the bolts 4, the reduction motor 601 is started simultaneously. The reduction motor 601 can drive the turntable 602 and the positioning groove 605 to rotate at a constant speed. With the contact rolling action between the first ball bearing 604 and the worktable 1 and the support action of the support rod 603, the stability of the rotation of the turntable 602 and the positioning groove 605 can be ensured. During the rotation of the positioning groove 605, when the positioning groove 605 is engaged with the right end of the guide plate 3, the rightmost bolt 4 on the guide plate 3 automatically slides into the positioning groove 605, thereby realizing the automatic feeding of the bolts 4. With the contact rolling action between the second ball bearing 606 and the bolts 4, the friction between the bolts 4 and the turntable 602 can be reduced, ensuring the normal feeding of the bolts 4. A first inclined panel 101 is fixed at the loading station on the left side of the workbench 1, and a second inclined panel 102 is fixed at the unloading station on the rear side of the workbench 1. A collection box 5 placed on the workbench 1 is provided on the side of the second inclined panel 102. The positioning mechanism 7 includes a slide rod 701 that is slidably connected to the turntable 602. A circular plate 702 is fixed on the slide rod 701, and a spring 703 is fixed between the circular plate 702 and the turntable 602. A mounting plate 704 is also fixed to the upper end of the slide rod 701. A rotatable rotating shaft 705 is connected to the mounting plate 704, and the lower end of the rotating shaft 705 is... A pressure plate 706 is fixed, and the pressure plate 706 contacts the head of the bolt 4 to achieve positioning. At the same time, the pressure plate 706 slides in contact with the second ball 606. The slide rod 701 is slidably connected to the first inclined plate 101 and the second inclined plate 102. A friction wheel 707 is fixed at the upper end of the rotating shaft 705, and the friction wheel 707 is slidably connected to the arc-shaped friction plate 708. The friction plate 708 is set at the heating station on the right side of the worktable 1. At the same time, the friction plate 708 is fixed to one end of the fixing rod 709, and the other end of the fixing rod 709 is fixed to the worktable 1. When turntable 602 rotates, as Figures 1-7 As shown, the rotation of the turntable 602 can synchronously drive the slide rod 701 to rotate. When the slide rod 701 rotates to contact and slide with the inclined surface of the first inclined panel 101, the slide rod 701 is forced to move upward, thereby causing the mounting plate 704, the rotating shaft 705 and the pressure plate 706 to move upward. With the sliding guide effect between the slide rod 701 and the turntable 602, the stability of the upward movement of the rotating shaft 705 and the pressure plate 706 can be ensured. At this time, the spring 703 is compressed, and the upward movement of the pressure plate 706 can adjust the distance between the pressure plate 706 and the turntable 602, thereby removing the obstruction of the positioning groove 605 by the pressure plate 706, ensuring that the bolt 4 can be normally fed into the positioning groove 605, thus ensuring the normal feeding of the bolt 4. Furthermore, during the continuous rotation of the turntable 602, after the bolt 4 engages with the positioning groove 605, the rotation of the turntable 602 can synchronously drive the bolt 4 and the slide rod 701 to continue rotating. When the slide rod 701 separates from the first inclined plate 101, the elastic action of the spring 703 can cause the rotating shaft 705 and the pressure plate 706 to automatically move down until the pressure plate 706 contacts the bolt 4. At this time, the spring 703 is still in a contracted state. Through the elastic action of the spring 703, the pressure plate 706 can exert a downward pressure force on the bolt 4, thereby ensuring the stability of the bolt 4 for subsequent processing. At this time, the lower end of the bolt 4 rod is located above the positioning plate 805. A support rod 501 fixed to the workbench 1 is provided on the side of the collection box 5, and a material feeding plate 502 is fixed to the upper end of the support rod 501. The support rod 501 is inclined. The adjustment mechanism 8 includes a guide rod 801 that is slidably connected to the turntable 602. A limit plate 802 is fixed to the upper end of the guide rod 801, and the limit plate 802 contacts the turntable 602 to achieve positioning. At the same time, a base plate 803 is fixed to the lower end of the guide rod 801. A rotatable positioning plate 805 is connected to the base plate 803. 805 is located directly below the pressure plate 706. The bottom end of the base plate 803 is also fixed with a top rod 804, and the top rod 804 is slidably connected to the third inclined panel 902. The third inclined panel 902 is fixed to the heating station on the right side of the worktable 1. The third inclined panel 902 is located between two heating induction coils 901, and the heating induction coils 901 are located at the heating station on the right side of the worktable 1. The heating induction coils 901 are fixed to one end of the round rod 9, while the other end of the round rod 9 is fixed to the worktable 1. During the continuous rotation of turntable 602, such as Figures 1-7As shown, the rotation of the turntable 602 synchronously drives the push rod 804 and the fixed bolt 4 to rotate clockwise toward the heating station. When the push rod 804 rotates to contact and slide with the third inclined plate 902, the push rod 804 is forced to move upward, synchronously driving the base plate 803 and the positioning plate 805 to move upward. With the sliding guidance between the guide rod 801 and the turntable 602, the stability of the upward movement of the base plate 803 and the positioning plate 805 can be ensured. When the positioning plate 805 moves upward to contact the lower end of the bolt 4 rod, the push rod 804 is still sliding on the inclined surface of the third inclined plate 902. When the push rod 804 continues to slide from the inclined surface of the third inclined plate 902 toward the third inclined plate 902... When the upper plane of panel 902 slides, the positioning plate 805 exerts an upward force on the lower end of bolt 4, causing bolt 4 to move upward, thereby driving the pressure plate 706 to move upward, causing bolt 4 to separate from the second ball 606. When the push rod 804 slides to the upper plane of the third inclined panel 902, the upper end of the push rod 804 is flush with the lower end of the heating induction coil 901, thereby realizing the automatic adjustment and positioning of the lower end of bolt 4. This ensures that when quenching the lower end of bolt 4 of different lengths, the position of the lower end of bolt 4 can match the position of the heating induction coil 901, thus ensuring the accuracy of the quenching position of bolt 4. When the push rod 804 slides to the upper plane of the third inclined plate 902, the bolt 4 is clamped and limited by the positioning plate 805 and the pressure plate 706, so that the bolt 4 is in a suspended state. With the help of the heating induction coil 901, the lower end of the bolt 4 can be quenched. During the quenching process, the rotation of the turntable 602 drives the friction wheel 707 to revolve. Combined with the friction transmission between the friction wheel 707 and the friction plate 708, the friction wheel 707 can rotate, thereby driving the rotating shaft 705, the pressure plate 706, the bolt 4, and the positioning plate 805 to rotate. The bolt 4 is subjected to uniform quenching at its lower end. After quenching, the bolt 4 is conveyed to the material feeding station by rotating the turntable 602. When the push rod 804 separates from the third inclined plate 902, the bolt 4 and the positioning plate 805 can automatically reset under the action of gravity and the elasticity of the spring 703. When the slide rod 701 rotates to contact and slide with the second inclined plate 102, the clamping and positioning effect of the pressure plate 706 on the bolt 4 can be released. Finally, the bolt 4 can be separated from the positioning groove 605 by the material feeding plate 502 and automatically fall into the collection box 5 for collection.

[0020] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0021] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A heat treatment apparatus for processing steel for automotive fasteners, comprising a worktable (1), characterized in that: A vertical rod (2) is fixed on the left side of the workbench (1) at the loading station. A guide plate (3) is fixed obliquely on the vertical rod (2). A bolt (4) is slidably connected on the guide plate (3). A drive mechanism (6) is fixed on the workbench (1). The drive mechanism (6) is used to realize the continuous conveying of the bolt (4). A positioning mechanism (7) is installed on the drive mechanism (6). The positioning mechanism (7) is used to realize the automatic positioning of the bolt (4). An adjustment mechanism (8) is also installed on the drive mechanism (6). The adjustment mechanism (8) and the positioning mechanism (7) are distributed in a one-to-one correspondence. The adjustment mechanism (8) is used to realize the height adjustment of bolts (4) of different lengths.

2. The heat treatment apparatus for processing steel for automotive fasteners according to claim 1, characterized in that: The workbench (1) has a first inclined panel (101) fixed on the left side loading station and a second inclined panel (102) fixed on the rear side unloading station. A collection box (5) placed on the workbench (1) is provided on the side of the second inclined panel (102).

3. The heat treatment apparatus for processing steel for automotive fasteners according to claim 2, characterized in that: The collection box (5) is provided with a support rod (501) fixed on the workbench (1) on the side, and a material feeding plate (502) is fixed on the upper end of the support rod (501), and the support rod (501) is inclined.

4. The heat treatment apparatus for processing steel for automotive fasteners according to claim 1, characterized in that: The drive mechanism (6) includes a geared motor (601) fixed on the upper surface of the worktable (1), and a turntable (602) is fixed at the output end of the geared motor (601). A support rod (603) is fixed at an equal angle on the lower surface of the turntable (602). At the same time, a first ball (604) is installed at the lower end of the support rod (603). The first ball (604) contacts and rolls with the upper surface of the worktable (1).

5. The heat treatment apparatus for processing steel for automotive fasteners according to claim 4, characterized in that: The turntable (602) has a positioning groove (605) at equal angles. The width of the positioning groove (605) is greater than the diameter of the shank of the bolt (4), and the width of the positioning groove (605) is less than the diameter of the head of the bolt (4). At the same time, the second ball (606) is evenly arranged on the side of the positioning groove (605) and installed on the turntable (602). The second ball (606) can roll in contact with the head of the bolt (4).

6. The heat treatment apparatus for machining steel for automotive fasteners according to claim 5, characterized in that: The positioning mechanism (7) includes a slide rod (701) that is slidably connected to the turntable (602), and a circular plate (702) is fixed on the slide rod (701). A spring (703) is fixed between the circular plate (702) and the turntable (602). At the same time, a mounting plate (704) is fixed at the upper end of the slide rod (701). A rotatable rotating shaft (705) is connected to the mounting plate (704). A pressure plate (706) is fixed at the lower end of the rotating shaft (705). The pressure plate (706) contacts the head of the bolt (4) to achieve the positioning function. At the same time, the pressure plate (706) contacts and slides with the second ball (606). The slide rod (701) is slidably connected to the first inclined plate (101) and the second inclined plate (102).

7. A heat treatment apparatus for machining steel for automotive fasteners according to claim 6, characterized in that: The upper end of the rotating shaft (705) is fixed with a friction wheel (707), and the friction wheel (707) and the arc-shaped friction plate (708) are in rolling connection. The friction plate (708) is set on the heating station on the right side of the workbench (1). At the same time, the friction plate (708) and one end of the fixing rod (709) are fixed to each other, and the other end of the fixing rod (709) is fixed on the workbench (1).

8. The heat treatment apparatus for processing steel for automotive fasteners according to claim 7, characterized in that: The adjustment mechanism (8) includes a guide rod (801) that is slidably connected to the turntable (602), and a limit plate (802) is fixed at the upper end of the guide rod (801). The limit plate (802) contacts the turntable (602) to achieve positioning, and a base plate (803) is fixed at the lower end of the guide rod (801).

9. A heat treatment apparatus for machining steel for automotive fasteners according to claim 8, characterized in that: A rotatable positioning plate (805) is connected to the base plate (803), and the positioning plate (805) is located directly below the pressure plate (706). A top rod (804) is also fixed on the lower end face of the base plate (803), and the top rod (804) is slidably connected to the third inclined panel (902). The third inclined panel (902) is fixed to the heating station on the right side of the workbench (1).

10. A heat treatment apparatus for machining steel for automotive fasteners according to claim 9, characterized in that: The third inclined panel (902) is located between two heating induction coils (901), and the heating induction coils (901) are located at the heating station on the right side of the workbench (1). The heating induction coils (901) are fixed to one end of the round rod (9), while the other end of the round rod (9) is fixed on the workbench (1).

Images