A high-strength alloy steel heat treatment device for tongs

Abstract

The utility model discloses a high -strength alloy steel heat treatment device for tongs head preparation, including support platform and heat treatment box, the heat treatment box sets up the upper surface of support platform, the inside right side of heat treatment box is installed with the heating ring, the inside rotation connection of heat treatment box has two rotating rods, and the outer surface of two rotating rods is commonly transmission connection with filter screen conveyer belt, the outer surface of heat treatment box is installed with motor A, and the output of motor A is through heat treatment box and is connected with the front end of one rotating rod after, the inside of heat treatment box is set up with fixed groove and mounting groove, and the movable block is moved through motor B drive screw rod rotation drive, and the transfer work of object plate between heating ring and filter screen conveyer belt is completed, has reduced the step of workpiece and external environment contact, avoided the temperature loss in traditional transfer process, significantly promoted the matching degree of tongs head surface hardness and heart part toughness, prolonged the tool life.

Description

Technical Field

[0001] This utility model belongs to the field of pliers head preparation technology, specifically relating to a heat treatment device for high-strength alloy steel used in pliers head preparation. Background Technology

[0002] As the core functional component of pliers such as wire cutters, needle-nose pliers, and pipe wrenches, the performance of the pliers head directly determines the overall quality, service life, and operational reliability of the tool. In actual use, the jaws need to withstand enormous shearing and clamping forces as well as intense friction and wear. Therefore, the high-strength alloy steel used to manufacture pliers heads must undergo heat treatment to obtain extremely high surface hardness to ensure its wear resistance. At the same time, the core must maintain sufficient toughness and strength to withstand impact loads and prevent chipping or breakage. This "hard on the outside and tough on the inside" performance requirement mainly relies on precise quenching and tempering processes. Quenching imparts high hardness to the material, while tempering, which follows, is used to adjust the internal structure, eliminate quenching stress, stabilize dimensions, and impart the required toughness to the material.

[0003] Currently, in the pliers manufacturing industry, especially in small and medium-sized enterprises, the widely used heat treatment method is still the traditional intermittent operation mode. The specific process is as follows: First, the operator loads a batch (usually a basket or a pallet) of pliers blanks into a box-type resistance furnace or pit furnace, heats them to the predetermined austenitizing temperature, and holds them at that temperature for a long time to ensure that the internal and external temperatures of the workpiece are uniform and the microstructure transformation is complete. After the holding time is over, the operator needs to open the furnace door and quickly take out the entire basket of hot workpieces. Using a crane or handcart, the workpieces are transferred to an independent quenching oil tank or water-based quenching liquid tank as quickly as possible. During this process, the workpieces are exposed to the air, which causes a significant drop in temperature, especially in thin-walled or sharp-cornered areas, where the temperature drops even more rapidly. This uncontrollable pre-cooling directly affects the integrity of the austenite transformation, creating hidden dangers for subsequent quality defects. Utility Model Content

[0004] The purpose of this invention is to provide a heat treatment device for high-strength alloy steel used in the preparation of clamp heads, so as to solve the problem that the temperature of the workpiece will drop significantly when exposed to air.

[0005] To achieve the above objectives, a specific embodiment of the present invention provides the following technical solution: a heat treatment device for high-strength alloy steel used in the preparation of pliers heads, comprising a support platform and a heat treatment box; The heat treatment chamber is disposed on the upper surface of the support platform; A heating coil is installed on the right side of the interior of the heat treatment chamber; The heat treatment chamber has two rotating rods rotatably connected inside, and the outer surfaces of the two rotating rods are connected to a filter conveyor belt for transmission. Motor A is mounted on the outer surface of the heat treatment box, and the output end of motor A passes through the heat treatment box and is connected to the front end of one of the rotating rods. The heat treatment box has a fixed slot and an installation slot inside. Motor B is installed inside the installation slot. A threaded rod is rotatably connected inside the installation slot. The output end of motor B passes through the fixed slot and is connected to the left end of the threaded rod. The outer surface of the threaded rod is threaded with a movable block, and a motor C is mounted on the bottom surface of the movable block. The output end of the motor C is connected to an electric lifting rod.

[0006] As a preferred technical solution of this utility model, the electric lifting rod is internally rotatably connected to a connecting rod, and a carrying plate is connected to the end of the connecting rod away from the electric lifting rod. A motor D is connected to the outer surface of the electric lifting rod, and the output end of the motor D passes through the electric lifting rod and is connected to the outer surface of the connecting rod.

[0007] As a preferred technical solution of this utility model, the bottom surface of the support platform is connected to a fixed box, the fixed box is provided with cavity A and cavity B inside, and an inclined plate is installed on the outer surface of the heat treatment box, the inclined plate being located above cavity A.

[0008] As a preferred technical solution of this utility model, the bottom surface of the heat treatment box and the outer surface of the support platform are provided with multiple corresponding through slots, and multiple nozzles are installed inside the heat treatment box.

[0009] As a preferred technical solution of this utility model, a pump body is installed on the bottom surface of the support platform, and the output end of the pump body passes through the support platform and the heat treatment box in sequence and communicates with the outer surface of multiple nozzles.

[0010] As a preferred technical solution of this utility model, the input end of the pump body is connected to a connecting pipe, and the bottom end of the connecting pipe extends through the fixed box and into the interior of cavity B.

[0011] As a preferred technical solution of this utility model, the heat treatment chamber is equipped with two sets of sealing curtains and multiple heating rods.

[0012] As a preferred technical solution of this utility model, the bottom surface of the support platform is equipped with two support legs A, the bottom surface of the fixed box is equipped with two support legs B, the outer surface of the fixed box is equipped with a controller, and the outer surface of the fixed box is equipped with a sealing cover.

[0013] Compared with the prior art, the high-strength alloy steel heat treatment device for pliers head preparation of this utility model uses motor B to drive the threaded rod to rotate and drive the moving block to move horizontally, completing the transfer of the workpiece plate between the heating coil and the filter conveyor belt. This reduces the steps of the workpiece coming into contact with the external environment, effectively avoids the temperature loss in the traditional transfer process, ensures the integrity of the austenite transformation, significantly improves the matching degree of the surface hardness and core toughness of the pliers head, and extends the tool's service life. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a front view of a heat treatment apparatus for preparing high-strength alloy steel pliers in one embodiment of the present invention; Figure 2 This is a side view of a heat treatment apparatus for preparing high-strength alloy steel pliers in one embodiment of the present invention; Figure 3 This is a schematic diagram of the internal structure of a heat treatment device for preparing pliers heads according to one embodiment of the present invention; Figure 4 This is a three-dimensional structural diagram of a moving block in a heat treatment device for preparing pliers heads, according to one embodiment of the present invention.

[0016] Explanation of key figure labels: 1. Support platform; 2. Support leg A; 3. Support leg B; 4. Fixing box; 5. Inclined plate; 6. Controller; 7. Motor A; 8. Sealing curtain; 9. Heat treatment box; 10. Cavity A; 11. Cavity B; 12. Connecting pipe; 13. Pump body; 14. Heating coil; 15. Fixing groove; 16. Mounting groove; 17. Threaded rod; 18. Motor B; 19. Moving block; 20. Motor C; 21. Electric lifting rod; 22. Connecting rod; 23. Carrying plate; 24. Motor D; 25. Filter conveyor belt; 26. Rotating rod; 27. Sealing cover; 28. Nozzle; 29. ​​Through groove; 30. Heating rod. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0018] like Figure 1-4 As shown, a heat treatment device for high-strength alloy steel used in the preparation of clamp heads includes a support platform 1 and a heat treatment chamber 9. The heat treatment chamber 9 is placed on the upper surface of the support platform 1, which supports the entire device, ensuring stable placement and preventing vibration from affecting the heat treatment quality. A heating coil 14 is installed on the right side of the interior of the heat treatment chamber 9. The heating coil 14 heats the workpiece to complete the austenitization process, achieving a high-temperature and uniform heating effect and ensuring sufficient material microstructure transformation. Two rotating rods 26 are rotatably connected inside the heat treatment chamber 9. These rods drive a conveyor belt to transport the workpiece, achieving continuous conveying and improving production efficiency. A filter conveyor belt 25 is connected to the outer surfaces of the two rotating rods 26. The filter conveyor belt 25 carries the workpiece and assists in the quenching process, achieving uniform quenching and preventing workpiece deformation. A motor A7 is installed on the outer surface of the heat treatment chamber 9. The motor A7 drives the rotating rods 26 to move the conveyor belt, achieving automated conveying and reducing manual intervention. The output end of motor A7 passes through the heat treatment chamber 9 and connects to the front end of one of the rotating rods 26. Power transmission is achieved through the connection between the output end of motor A7 and the rotating rod 26, ensuring efficient drive and stable transmission. The heat treatment chamber 9 has a fixing slot 15 and a mounting slot 16 inside. These slots fix components, providing structural support, precise positioning, and improved device reliability. Motor B18 is installed inside the mounting slot 16. Motor B18 drives the threaded rod 17, moving the moving block 19 and transferring the workpiece while preventing temperature loss. The threaded rod 17 is rotatably connected inside the mounting slot 16. Rotation of the threaded rod 17 enables linear motion, ensuring accurate workpiece positioning.

[0019] The output end of motor B18 passes through the fixed slot 15 and connects to the left end of threaded rod 17. Power transmission is achieved through the connection between the output end of motor B18 and threaded rod 17, resulting in smooth driving and reduced mechanical wear. A movable block 19 is threadedly connected to the outer surface of threaded rod 17. Moving the movable block 19 along threaded rod 17 adjusts the position of the workpiece 23, enabling flexible transfer and optimizing the heat treatment process. Motor C20 is mounted on the bottom surface of movable block 19. Motor C20 drives a lifting rod to adjust the height, achieving vertical movement and adapting to different workpiece sizes. The output end of motor C20 is connected to an electric lifting rod 21. The extension and retraction of the electric lifting rod 21 changes the height, achieving precise positioning and improving processing accuracy.

[0020] The electric lifting rod 21 is internally connected to a connecting rod 22, which transmits motion to adjust the angle and achieve a rotational effect, facilitating workpiece unloading. A carrying plate 23 is connected to the end of the connecting rod 22 furthest from the electric lifting rod 21. The carrying plate 23 supports the workpiece, providing stable support and preventing slippage. A motor D24 is connected to the outer surface of the electric lifting rod 21. The motor D24 drives the connecting rod 22, tilting the carrying plate 23 for automatic unloading and reduced operation time. The output end of the motor D24 passes through the electric lifting rod 21 and connects to the outer surface of the connecting rod 22. The motor D24 drives the connecting rod 22 to achieve rotational drive, controlling the angle and ensuring smooth workpiece transfer.

[0021] The bottom of the support platform 1 is connected to a fixed box 4, which supports the entire bottom of the device, ensuring stability and balanced operation, and preventing vibration from affecting the heat treatment accuracy. The fixed box 4 has cavities A10 and B11 inside, which are used for partitioned storage, enabling material separation and efficient space utilization, reducing floor space requirements. An inclined plate 5 is installed on the outer surface of the heat treatment box 9, guiding the workpiece for automatic sliding, achieving damage-free collection and avoiding bumps caused by manual operation. The inclined plate 5 is located above cavity A10, and its positional cooperation with cavity A10 guides the finished product, achieving precise collection and improving product integrity. Multiple corresponding through-slots 29 are formed on the bottom surface of the heat treatment box 9 and the outer surface of the support platform 1, allowing the quenching agent to circulate, achieving resource conservation and reducing production costs.

[0022] Multiple nozzles 28 are installed inside the heat treatment chamber 9. These nozzles spray quenching agent to achieve uniform quenching, resulting in rapid cooling and ensuring uniform workpiece hardness. A pump body 13 is installed on the bottom surface of the support platform 1. The pump body 13 drives the quenching agent circulation, completing the medium delivery and achieving continuous quenching, thus improving production efficiency. The output end of the pump body 13 passes through the support platform 1 and the heat treatment chamber 9, connecting to the outer surface of the multiple nozzles 28. This connection between the pump body 13 and the nozzles 28 ensures the supply of quenching agent, achieving uniform spraying and ensuring consistent quenching quality. The input end of the pump body 13 is connected to a connecting pipe 12, the bottom end of which passes through the fixed box 4 and extends into the cavity B11.

[0023] The heat treatment chamber 9 is equipped with two sets of sealing curtains 8, which separate the working areas to isolate the quenching and tempering zones, achieving temperature gradient control and preventing heat loss from affecting tempering accuracy. Multiple heating rods 30 are installed inside the heat treatment chamber 9, providing localized heating to maintain the tempering temperature and ensuring precise temperature control, thus improving material toughness. Two support legs A2 are installed on the bottom of the support platform 1, providing front-end support to balance the device, preventing tipping and ensuring safe operation. Two support legs B3 are installed on the bottom of the fixed box 4, providing rear-end support for coordinated load-bearing, achieving overall stability and reducing vibration interference. A controller 6 is installed on the outer surface of the fixed box 4, enabling centralized control of the entire process, achieving intelligent management, and reducing human error. A sealing cover 27 is installed on the outer surface of the fixed box 4, allowing the addition of quenching agent by opening the cover.

[0024] Working Principle: In use, the device is first stably placed in the designated area using support legs A2 and B3. Then, the controller 6 starts motor B18, which rotates the threaded rod 17, driving the moving block 19 to move horizontally. This causes the carrying plate 23 to extend from inside the heating coil 14 to outside the heat treatment chamber 9, allowing the jaws to be processed to be placed. After adjusting the carrying plate 23 to a suitable height using the electric lifting rod 21, motor B18 is started again to move the jaws into the heating coil 14, where austenitization heating is completed. After heating, motor B18 moves the jaws above the filter conveyor belt 25. Motor C20 drives the carrying plate 23 to rotate, while motor D24 tilts the carrying plate 23 towards the filter conveyor belt 25, causing the jaws to slide completely onto the filter. On the mesh conveyor belt 25; at this time, the motor A7 starts, driving the rotating rod 26 and the mesh conveyor belt 25 to rotate and convey the clamp head. At the same time, the pump body 13 draws the quenching agent in the cavity B11 through the connecting pipe 12, and sprays it evenly onto the clamp head on the mesh conveyor belt 25 through the nozzle 28 for quenching. The sprayed quenching agent flows back to the cavity B11 through the through groove 29 for recycling. The quenched clamp head continues to be conveyed to the tempering zone formed by the sealing curtain 8, and the heating rod 30 is started for tempering treatment. Finally, the tempered clamp head passes through the sealing curtain 8 and is conveyed to the inclined plate 5. It slides down into the cavity A10 for collection by gravity. The whole process realizes continuous closed operation of heating, quenching and tempering, effectively avoiding the temperature loss problem during workpiece transfer in traditional processes.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A heat treatment apparatus for high-strength alloy steel used in the preparation of pliers heads, characterized in that, Includes a support platform (1) and a heat treatment box (9); The heat treatment box (9) is disposed on the upper surface of the support platform (1); A heating coil (14) is installed on the right side of the interior of the heat treatment box (9); The heat treatment box (9) has two rotating rods (26) inside, and the outer surfaces of the two rotating rods (26) are connected to a filter conveyor belt (25) for transmission. The outer surface of the heat treatment box (9) is equipped with a motor A (7), and the output end of the motor A (7) passes through the heat treatment box (9) and is connected to the front end of one of the rotating rods (26); The heat treatment box (9) has a fixed groove (15) and an installation groove (16) inside. A motor B (18) is installed inside the installation groove (16). A threaded rod (17) is rotatably connected inside the installation groove (16). The output end of the motor B (18) passes through the fixed groove (15) and is connected to the left end of the threaded rod (17). The outer surface of the threaded rod (17) is threadedly connected to a moving block (19), and a motor C (20) is mounted on the bottom surface of the moving block (19). The output end of the motor C (20) is connected to an electric lifting rod (21).

2. The heat treatment apparatus for preparing high-strength alloy steel pliers according to claim 1, characterized in that, The electric lifting rod (21) is rotatably connected to a connecting rod (22). The end of the connecting rod (22) away from the electric lifting rod (21) is connected to a carrying plate (23). The outer surface of the electric lifting rod (21) is connected to a motor D (24). The output end of the motor D (24) passes through the electric lifting rod (21) and is connected to the outer surface of the connecting rod (22).

3. The heat treatment apparatus for preparing high-strength alloy steel pliers according to claim 1, characterized in that, The bottom surface of the support platform (1) is connected to a fixed box (4). The fixed box (4) has a cavity A (10) and a cavity B (11) inside. The outer surface of the heat treatment box (9) is equipped with an inclined plate (5), which is located above the cavity A (10).

4. The heat treatment apparatus for preparing high-strength alloy steel pliers according to claim 3, characterized in that, The bottom surface of the heat treatment box (9) and the outer surface of the support platform (1) are provided with multiple corresponding through slots (29), and multiple nozzles (28) are installed inside the heat treatment box (9).

5. The heat treatment apparatus for preparing high-strength alloy steel pliers according to claim 4, characterized in that, The bottom surface of the support platform (1) is equipped with a pump body (13), and the output end of the pump body (13) passes through the support platform (1) and the heat treatment box (9) in sequence and then communicates with the outer surface of multiple nozzles (28).

6. The heat treatment apparatus for preparing high-strength alloy steel pliers according to claim 5, characterized in that, The pump body (13) has a connecting pipe (12) at its input end, and the bottom end of the connecting pipe (12) extends through the fixed box (4) and into the cavity B (11).

7. The heat treatment apparatus for preparing high-strength alloy steel pliers according to claim 1, characterized in that, The heat treatment chamber (9) is equipped with two sets of sealing curtains (8) and multiple heating rods (30).

8. The heat treatment apparatus for preparing high-strength alloy steel pliers according to claim 3, characterized in that, The bottom surface of the support platform (1) is equipped with two support legs A (2), the bottom surface of the fixed box (4) is equipped with two support legs B (3), the outer surface of the fixed box (4) is equipped with a controller (6), and the outer surface of the fixed box (4) is equipped with a sealing cover (27).

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