A heat treatment device and a heat treatment method for producing a lead screw

Abstract

The application provides a heat treatment equipment and heat treatment method for screw rod production, and relates to the technical field of screw rod processing equipment. The heat treatment equipment comprises a heating coil, a water spraying part, and guide support parts. The heating coil is used for heating the screw rod to be treated. The water spraying part is arranged on one side of the screw rod and used for spraying water to cool the heated screw rod. The guide support parts are arranged on both sides of the heating coil. The two guide support parts are respectively an inlet position and an outlet position. The guide support parts are formed with a plurality of circumferentially arranged guide holes. Each guide hole is used for passing one screw rod. Push-pull assemblies are arranged on one side of the inlet position and one side of the outlet position. The push-pull assemblies are used for pushing and pulling the plurality of screw rods to move. The heat treatment equipment and heat treatment method for screw rod production solve the technical problem of low heat treatment efficiency in the related art, in which the screw rods are usually heat treated one by one.

Description

Technical Field

[0001] This invention belongs to the technical field of lead screw processing equipment, specifically, it relates to a heat treatment equipment and heat treatment method for lead screw production. Background Technology

[0002] As a core component in the field of mechanical transmission, the precision, strength, and wear resistance of the lead screw directly determine the operational stability and service life of the transmission mechanism. Heat treatment is a crucial step in improving these properties. Currently, commonly used heat treatment methods in lead screw production include quenching, tempering, and normalizing. By controlling the heating, holding, and cooling processes, the internal metallographic structure of the lead screw is optimized, processing stress is eliminated, and its mechanical properties are enhanced.

[0003] Existing lead screw heat treatment equipment and processes have certain limitations in practical applications. Due to concerns about heating uniformity, most production scenarios employ a method of heat-treating individual lead screws one by one. While this method can, to some extent, ensure the heat treatment quality of individual lead screws and avoid mutual interference, it suffers from extremely low heat treatment efficiency. With the ever-increasing demand for lead screws in the machinery manufacturing industry, the single-screw treatment method is no longer sufficient to keep pace with large-scale production, leading to longer production cycles, increased labor and energy costs, and hindering the improvement of overall production efficiency.

[0004] To address the low efficiency of single-screw heat treatment, some manufacturers have attempted to heat-treat multiple lead screws simultaneously. However, this approach lacks mature equipment and process systems, making it prone to new technical problems. Since lead screws are typically long and slender rods, multiple screws placed together are highly susceptible to contact, collision, or sticking if there is a lack of effective separation and positioning mechanisms. This hinders heat transfer at the contact points, leading to uneven heating, localized excessively high or low temperatures, and consequently, quality defects such as lead screw deformation, uneven hardness, and cracking. These defects severely affect the lead screw's accuracy and mechanical properties, failing to meet the production requirements for high-precision lead screws. Summary of the Invention

[0005] The purpose of this invention is to provide a heat treatment equipment and method for lead screw production, which solves the technical problem of low heat treatment efficiency in related technologies where each lead screw is typically heat-treated individually.

[0006] At least one embodiment of the present invention provides a heat treatment device for lead screw production, comprising: A heating coil, used to heat the lead screw to be processed; A water spray component is provided on one side of the lead screw and is used to spray water to cool the heated lead screw. The material guide support is provided on both sides of the heating coil. The two sides of the material guide support are the feed position and the discharge position, respectively. The material guide support is formed with a plurality of circumferentially arranged material guide holes, and each material guide hole is used for a lead screw to pass through. The push-pull assembly is provided on one side of the feed position and one side of the discharge position. The push-pull assembly is used to push and pull several lead screws to move.

[0007] According to an exemplary embodiment of this disclosure, at least one embodiment of this disclosure provides a heat treatment device for producing lead screws, which further includes an aperture adjustment assembly. The aperture adjustment assembly is disposed on the material guide support, and each aperture adjustment assembly is used to adjust the size of one of the material guide holes. The aperture adjustment assembly includes: An annular seat, wherein the annular seat is disposed on the material guide support; An adjusting slider is slidably disposed on the annular seat, the sliding direction being oblique to the radial direction of the annular seat, and arranged in several circles. The material guide hole is formed between the several adjusting sliders, and the material guide hole can be enlarged or reduced after the several adjusting sliders slide synchronously. The rotating adjustment ring is rotatably disposed relative to the annular seat, and after rotation, it can push several of the adjustment sliders to slide synchronously.

[0008] According to an exemplary embodiment of this disclosure, at least one embodiment of this disclosure provides a heat treatment device for producing lead screws. The rotating adjustment ring has a plurality of arc-shaped push grooves, and the adjustment slider has a plurality of cylindrical push portions. The cylindrical push portions are slidably disposed in the arc-shaped push grooves. After the rotating adjustment ring rotates, it can push the cylindrical push portions and the adjustment slider to slide through the arc-shaped push grooves, thereby increasing or decreasing the size of the guide hole.

[0009] According to an exemplary embodiment of the present disclosure, at least one embodiment of the present disclosure provides a heat treatment device for producing lead screws, wherein the outer wall of the rotating adjustment ring has an external gear ring, and the external gear rings of two adjacent aperture adjustment components mesh with each other, thereby causing a plurality of the rotating adjustment rings to rotate synchronously.

[0010] According to an exemplary embodiment of this disclosure, at least one embodiment of this disclosure provides a heat treatment apparatus for producing lead screws, wherein the aperture adjustment assembly further includes: A locking bolt, threaded onto the rotating adjusting ring, is used to lock the rotating adjusting ring onto the material guide support, thereby locking the size of the material guide hole.

[0011] According to an exemplary embodiment of this disclosure, at least one embodiment of this disclosure provides a heat treatment apparatus for producing lead screws, wherein the push-pull assembly includes: First pull rod, the first pull rod is movable; A pull head, which is disposed at the end of the first pull rod, has a plurality of pull holes, each of which is used to pass through a lead screw; An arc-shaped locking part is slidably disposed on one side of the pull hole along the radial direction of the pull hole, and is used to lock the lead screw in the pull hole after sliding.

[0012] According to an exemplary embodiment of this disclosure, at least one embodiment of this disclosure provides a heat treatment apparatus for producing lead screws, wherein the arc-shaped clamping part has a pushed inclined surface, and further includes: The second pull rod is slidably disposed on the first pull rod and has a pushing inclined surface. The pushing inclined surface abuts against the pushed inclined surface. After the second pull rod slides, it is used to push the arc-shaped locking part to slide and lock the lead screw through the pushing inclined surface and the pushed inclined surface.

[0013] According to an exemplary embodiment of this disclosure, at least one embodiment of this disclosure provides a heat treatment apparatus for producing lead screws, wherein the push-pull assembly further includes: An elastic element, one end of which acts on the arc-shaped locking part and the other end of which acts on the pull head, is used to provide a force for the arc-shaped locking part to return to its original position away from the lead screw; According to an exemplary embodiment of this disclosure, at least one embodiment of this disclosure provides a heat treatment apparatus for producing lead screws, wherein the push-pull assembly further includes: A first linear drive unit, which is connected to the first pull rod, is used to drive the first pull rod to move; A second linear drive element is disposed on the first pull rod and connected to the second pull rod, and is used to drive the second pull rod to move.

[0014] According to an exemplary embodiment of this disclosure, at least one embodiment of this disclosure provides a heat treatment apparatus for producing lead screws, wherein the end of the pull head away from the first pull rod has a tapered head for easy insertion between several lead screws, and further includes: A receiving seat is provided on one side of the discharge position to receive the lead screw after heat treatment.

[0015] At least one embodiment of the present invention also provides a heat treatment method for lead screw production, wherein the lead screw is heat treated using the aforementioned heat treatment equipment for lead screw production.

[0016] The present invention provides a heat treatment equipment for lead screw production. The cooperation of the guide support and the push-pull assembly enables multiple lead screws to be heat treated simultaneously, which changes the traditional mode of treating a single lead screw one by one. This greatly improves the heat treatment efficiency, meets the needs of large-scale production for lead screws, and shortens the production cycle.

[0017] The guide holes of the guide support separate and position the lead screw, preventing multiple lead screws from contacting, colliding or sticking together during heating and cooling. This ensures the uniformity of heating and cooling, effectively preventing quality defects such as deformation, uneven hardness, and cracking of the lead screw, improving the accuracy and mechanical properties of the lead screw, and meeting the production requirements of high-precision lead screws. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, 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 of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the heat treatment equipment for lead screw production provided in an embodiment of the present invention; Figure 2 for Figure 1 A magnified structural diagram of part A in the middle; Figure 3 For the present invention Figure 1 A cross-sectional view of the internal structure of the push-pull assembly in the embodiment; Figure 4 For the present invention Figure 1 A cross-sectional view of the internal structure of the push-pull assembly in the embodiment from another perspective; Figure 5 for Figure 4 A magnified schematic diagram of part B in the middle section; In the figure: heating coil 100, water spray component 200, material guide support component 300, feed position 310, discharge position 320, material guide hole 330, push-pull assembly 400, first pull rod 410, pull head 420, pull hole 421, conical head 422, arc-shaped locking part 430, pushed inclined surface 431, second pull rod 440, pushing inclined surface 441, elastic component 450, first linear drive component 460, second linear drive component 470, aperture adjustment assembly 500, ring seat 510, adjusting slider 520, cylindrical pushed part 521, rotating adjustment ring 530, arc-shaped push groove 531, external gear ring 532, locking bolt 540, material receiving seat 600. Detailed Implementation

[0020] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure. For ease of understanding, the English abbreviations and related technical terms involved in the embodiments of this disclosure will be explained and described below.

[0021] It should be understood that the described embodiments are merely some, not all, of the embodiments disclosed herein. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0022] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The singular forms “a,” “the,” and “the” as used in the embodiments of this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0023] It should be understood that the term "and / or" used in this article is merely a way of describing the logical relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0024] Depending on the context, the word "if" as used here can be interpreted as "when" or "when" or "in response to determination" or "in response to detection." Similarly, depending on the context, the phrase "if determination" or "if detection (of the stated condition or event)" can be interpreted as "when determination" or "in response to determination" or "when detection (of the stated condition or event)" or "in response to detection (of the stated condition or event)."

[0025] It should be understood that the terms "first," "second," etc., used in this disclosure are for distinguishing purposes only and should not be construed as indicating or implying relative importance or order.

[0026] In the description of this disclosure, the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as a limitation of this disclosure.

[0027] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "joining" should be interpreted broadly, for example, they can be fixed connections, detachable connections, mating connections or integral connections; those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0028] like Figures 1-5 As shown, a heat treatment device for lead screw production according to an embodiment of the present invention is illustrated, including a heating coil 100, a water spray component 200, a material guide support component 300, a push-pull assembly 400, and an orifice adjustment assembly 500. The heating coil 100 is used to heat the lead screw. The water spray component 200 is disposed on one side of the lead screw and is used to spray water to cool the heated lead screw. Material guide supports 300 are provided on both sides of the heating coil 100. The two sides of the two material guide supports 300 are respectively the feed position 310 and the discharge position 320. The material guide support component 300 forms a plurality of circumferentially arranged material guide holes 330. Each material guide hole 330 is used for one lead screw to pass through. A push-pull assembly 400 is provided on one side of the feed position 310 and one side of the discharge position 320. The push-pull assembly 400 is used to push and pull a plurality of lead screws to move.

[0029] Aperture adjustment assembly 500 is mounted on the material guide support 300. Each aperture adjustment assembly 500 is used to adjust the size of a material guide hole 330. The aperture adjustment assembly 500 includes an annular seat 510, an adjusting slider 520, and a rotating adjusting ring 530. The annular seat 510 is mounted on the material guide support 300. The adjusting slider 520 is slidably mounted on the annular seat 510. The sliding direction is oblique to the radial direction of the annular seat 510 and is arranged in several circles. The material guide hole 330 is formed between the several adjusting sliders 520. After the several adjusting sliders 520 slide synchronously, the material guide hole 330 can be enlarged or reduced. The rotating adjusting ring 530 is rotatably mounted relative to the annular seat 510. After rotation, it can push the several adjusting sliders 520 to slide synchronously. The rotating adjustment ring 530 has several arc-shaped push grooves 531, and the adjusting slider 520 has several cylindrical push portions 521. The cylindrical push portions 521 are slidably disposed in the arc-shaped push grooves 531. After the rotating adjustment ring 530 rotates, it can push the cylindrical push portions 521 and the adjusting slider 520 to slide through the arc-shaped push grooves 531, thereby increasing or decreasing the size of the guide hole 330.

[0030] For example, the heating coil 100 is made of a high-temperature resistant and electrically conductive metal material to ensure uniform heating of the lead screw. The heating coil 100 is connected to a high-frequency heating power supply, which generates an alternating magnetic field through the current. This induces a current in the lead screw, causing it to heat up. The heating coil 100 is the component that heats the lead screw. By controlling the parameters of the heating power supply, such as current magnitude and frequency, the heating temperature and heating time can be precisely adjusted to meet the heating requirements of different lead screw materials and heat treatment processes, enabling the lead screw to reach the desired heat treatment temperature.

[0031] The water spray component 200 consists of a nozzle, a water pipe, and connecting parts. The nozzle typically uses materials and designs with good atomization, such as ceramic nozzles, to ensure that the sprayed water evenly covers the surface of the lead screw. The water pipe connects to a water source, providing a stable water flow to the nozzle. The connecting parts are used to fix the water spray component 200 to a suitable position on one side of the lead screw, ensuring that the water spray direction is aligned with the heated lead screw. The water spray component 200 is used to cool the heated lead screw by spraying water. After the lead screw reaches the predetermined heat treatment temperature, water is sprayed through the water spray component 200 to rapidly cool the lead screw, achieving a quenching process, thereby changing the metallographic structure of the lead screw and improving its mechanical properties such as hardness, strength, and wear resistance.

[0032] The material guide support 300 is made of high-temperature resistant and high-strength metal material, and is disc-shaped or cylindrical, symmetrically arranged on both sides of the heating coil 100. Several circumferentially arranged guide holes 330 are formed on the material guide support 300, and the axes of these guide holes 330 are parallel to the axis of the lead screw. The two sides of the material guide support 300 correspond to the feed position 310 and the discharge position 320, respectively, providing channels for the lead screw to enter and exit. The material guide support 300 serves to support and guide the lead screw. On the one hand, it positions the lead screw through the guide holes 330, ensuring that multiple lead screws maintain a relatively stable position during heating and cooling, avoiding mutual contact, collision, or contact, and ensuring uniform heating and cooling. On the other hand, it provides channels for the lead screw to enter and exit the heating and cooling zones, enabling the lead screw to smoothly complete the heat treatment process.

[0033] The push-pull assembly 400 is used to push the lead screw from the feeding position to the heating zone, and to pull the heat-treated lead screw from the heating zone to the discharge position. The push-pull assembly 400 is responsible for realizing the movement of the lead screw between the feeding position, the heating zone, and the discharge position. It can control the feed speed and position of the lead screw, ensuring that the lead screw operates according to the predetermined heat treatment process. At the feeding position, the push-pull assembly 400 sequentially pushes the lead screw into the guide hole 330 of the guide support 300 and feeds it into the heating coil 100 for heating; at the discharge position, the push-pull assembly 400 pulls the heat-treated lead screw out of the heating zone, completing the entire heat treatment process.

[0034] The annular seat 510 of the aperture adjustment assembly 500 is a circular structure, mounted on the material guide support 300. Its material is the same as that of the material guide support 300 to ensure good bonding strength and high-temperature resistance. The inner circumference of the annular seat 510 has a track for the sliding slider 520, serving as a guide for its movement. The annular seat 510 provides a mounting base for the adjusting slider 520 and the rotating adjusting ring 530, ensuring that the adjusting slider 520 can slide stably on its designated track, while also ensuring the connection stability between the entire aperture adjustment assembly 500 and the material guide support 300.

[0035] The adjusting sliders 520 are block-shaped, and there are several of them arranged circumferentially on the inner circumferential surface of the annular seat 510. The sliding direction of the adjusting sliders 520 is oblique to the radial direction of the annular seat 510. This design makes the movement of the adjusting sliders 520 smoother and more effective when adjusting the size of the guide hole 330. The adjusting sliders 520 are provided with cylindrical push parts 521 for cooperating with the arc-shaped push grooves 531 on the rotating adjusting ring 530. The guide hole 330 is formed between the several adjusting sliders 520. The size of the guide hole 330 is changed by synchronous sliding to meet the positioning requirements of lead screws of different diameters. Under the push of the rotating adjusting ring 530, the adjusting sliders 520 can adjust the size of the guide hole 330, ensuring that lead screws of different specifications can be stably supported and positioned in the guide hole 330.

[0036] The rotating adjusting ring 530 is annular and rotatably mounted on the annular seat 510 or the guide support 300, allowing it to rotate relative to the annular seat 510. Several arc-shaped push grooves 531 are provided on the inner circumference of the rotating adjusting ring 530. The shape and position of these arc-shaped push grooves 531 match the cylindrical push portion 521 on the adjusting slider 520. An operating handle or a drive device can also be provided on the rotating adjusting ring 530 for convenient rotation by the operator.

[0037] When the adjusting ring 530 rotates, it pushes the cylindrical pushed part 521 through the arc-shaped push groove 531, which in turn drives the adjusting slider 520 to slide synchronously, thereby adjusting the size of the guide hole 330. The operator can quickly and accurately adjust the size of the guide hole 330 by rotating the adjusting ring 530 according to the diameter of the lead screw, improving the equipment's adaptability to lead screws of different specifications.

[0038] During operation, the size of the guide hole 330 of the orifice adjustment component 500 is adjusted by rotating the rotating adjustment ring 530 according to the diameter of the lead screw to be processed, so that it matches the diameter of the lead screw. The heating coil 100, water spray component 200, push-pull component 400 and other components of the equipment are checked to ensure that they are operating normally.

[0039] The push-pull assembly 400 on one side of the feed position 310 is activated, pushing the lead screws to be processed, causing them to sequentially enter the corresponding guide holes 330 on the guide support 300. Multiple lead screws are positioned by the guide support 300, maintaining a certain distance to prevent them from contacting each other.

[0040] When the lead screw enters the heating coil 100 region, the heating coil 100 is connected to a high-frequency heating power supply, generating an alternating magnetic field that heats the lead screw itself. By controlling the parameters of the heating power supply, the lead screw is kept at a predetermined temperature for a certain period of time to complete the heating process and optimize the internal metallographic structure of the lead screw.

[0041] After heating is complete, the push-pull assembly 400 on one side of the discharge position 320 is activated, pulling the heated lead screw out from the heating coil 100 area. At the same time, the water spray component 200 starts spraying water to cool the pulled-out lead screw, realizing the quenching process and changing the mechanical properties of the lead screw.

[0042] After cooling, the lead screw is moved out of the equipment from the discharge position 320 under the action of the push-pull assembly 400, completing the entire heat treatment process, and then the next batch of lead screws can be heat treated.

[0043] By combining the material guide support 300 and the push-pull assembly 400, multiple lead screws can be heat-treated simultaneously, changing the traditional mode of treating each lead screw one by one. This greatly improves the heat treatment efficiency, meets the needs of large-scale production for lead screws, and shortens the production cycle.

[0044] The guide hole 330 of the guide support 300 separates and positions the lead screw, preventing multiple lead screws from contacting, colliding or sticking together during heating and cooling, ensuring the uniformity of heating and cooling, effectively preventing quality defects such as deformation, uneven hardness, and cracking of the lead screw, improving the accuracy and mechanical properties of the lead screw, and meeting the production requirements of high-precision lead screws.

[0045] The orifice adjustment component 500 can conveniently and quickly adjust the size of the guide hole 330 according to different lead screw diameters, enabling the equipment to adapt to the heat treatment of various specifications of lead screws, thus improving the versatility and flexibility of the equipment.

[0046] In some examples, the outer wall of the rotating adjusting ring 530 has an external gear ring 532, and the external gear rings 532 of two adjacent aperture adjusting assemblies 500 mesh with each other, thereby causing several rotating adjusting rings 530 to rotate synchronously. The aperture adjusting assembly 500 also includes a locking bolt 540, which is threaded on the rotating adjusting ring 530 and used to lock the rotating adjusting ring 530 onto the guide support 300, thereby locking the size of the guide hole 330.

[0047] For example, the outer gear ring 532 is integrally formed on the outer wall of the rotating adjustment ring 530, and the outer gear rings 532 of two adjacent aperture adjustment components 500 mesh with each other to form a linkage structure.

[0048] The external gear ring 532 enables the synchronous rotation of several rotating adjustment rings 530. When the size of the guide hole 330 needs to be adjusted, only one rotating adjustment ring 530 needs to be operated. Through the meshing transmission of the external gear ring 532, the other rotating adjustment rings 530 will rotate synchronously, thereby driving all the adjustment sliders 520 to slide synchronously, so that the size of all guide holes 330 changes simultaneously. This greatly improves the adjustment efficiency, ensures that the adaptability of each guide hole 330 to lead screws of different diameters remains consistent, and guarantees the positioning accuracy and stability of multiple lead screws during the heat treatment process. At the same time, it is necessary to ensure that the guide holes 330 formed by multiple hole diameter adjustment components 500 can be enlarged and reduced synchronously. Considering that the meshing transmission of two adjacent rotating adjustment rings 530 through the external gear ring 532 will cause the two adjacent rotating adjustment rings 530 to rotate in opposite directions, the directions of the arc-shaped push grooves 531 on them should also be opposite to ensure that multiple guide holes 330 can be enlarged and reduced synchronously.

[0049] The locking bolt 540 is a threaded fastener. The rotating adjusting ring 530 has a threaded hole that matches the locking bolt 540. When the locking bolt 540 is screwed into the threaded hole, its end can abut against the surface of the guide support 300. After adjusting the size of the guide hole 330 to a suitable size by rotating the adjusting ring 530, the locking bolt 540 is tightened, causing its end to press firmly against the guide support 300, thereby fixing the rotating adjusting ring 530 to the guide support 300. This prevents the rotating adjusting ring 530 from rotating due to vibration or other reasons during the feeding, heating, cooling, and discharging processes of the lead screw, thus ensuring the stable positioning of the guide hole 330 on the lead screw and guaranteeing the smooth progress of the heat treatment process.

[0050] During operation, one of the rotating adjustment rings 530 is located and operated according to the diameter of the lead screw to be processed. Due to the meshing action of the external gear ring 532, when this rotating adjustment ring 530 is rotated, all rotating adjustment rings 530 rotate synchronously. The rotating adjustment ring 530 pushes the cylindrical pushed part 521 on the adjusting slider 520 through the arc-shaped push groove 531, causing the adjusting slider 520 to slide along the track on the annular seat 510, thereby simultaneously increasing or decreasing the size of all guide holes 330 until the size of the guide holes 330 matches the diameter of the lead screw.

[0051] After adjustment, tighten the locking bolts 540 on each rotating adjustment ring 530 to lock the rotating adjustment ring 530 onto the guide support 300 and lock the size of the guide hole 330.

[0052] The external gear ring 532 enables the synchronous rotation of multiple rotating adjustment rings 530, making the adjustment of the guide hole 330 more efficient and faster. Compared with adjusting each rotating adjustment ring 530 individually, it greatly saves adjustment time and improves the work efficiency during the equipment preparation stage.

[0053] The locking bolt 540 securely locks the rotating adjusting ring 530, thereby ensuring the stability of the size of the guide hole 330. Throughout the entire heat treatment process of the lead screw, it effectively prevents the size of the guide hole 330 from changing due to external factors, ensuring that the lead screw is always in an accurate positioning state, further improving the heat treatment quality and product consistency.

[0054] The engagement of the external gear ring 532 with the locking bolt 540 simplifies the adjustment of the guide hole 330 and enhances the stability after adjustment. Operators can more easily adjust the equipment according to the lead screw diameter, reducing operational difficulty and improving the overall usability and reliability of the equipment.

[0055] In some examples, the push-pull assembly 400 includes a first pull rod 410, a pull head 420, an arc-shaped locking part 430, a second pull rod 440, an elastic element 450, a first linear drive element 460, and a second linear drive element 470. The first pull rod 410 is movably disposed, and the pull head 420 is disposed at the end of the first pull rod 410 and has a plurality of pull holes 421. Each pull hole 421 is used to pass a lead screw through it. The arc-shaped locking part 430 is slidably disposed on one side of the pull hole 421 along the radial direction of the pull hole 421 and is used to lock the lead screw in the pull hole 421 after sliding.

[0056] The arc-shaped locking part 430 has a pushed inclined surface 431. The second pull rod 440 is slidably disposed on the first pull rod 410 and has a pushing inclined surface 441. The pushing inclined surface 441 abuts against the pushed inclined surface 431. After the second pull rod 440 slides, it is used to push the arc-shaped locking part 430 to slide and lock the lead screw through the pushing inclined surface 441 and the pushed inclined surface 431. One end of the elastic member 450 acts on the arc-shaped locking part 430, and the other end acts on the pull head 420 to provide a force for the arc-shaped locking part 430 to reset away from the lead screw. The first linear drive member 460 is connected to the first pull rod 410 and is used to drive the first pull rod 410 to move. The second linear drive member 470 is disposed on the first pull rod 410 and connected to the second pull rod 440 to drive the second pull rod 440 to move.

[0057] For example, the first pull rod 410 is slender and rod-shaped, with one end fixedly connected to the pull head 420 and the other end connected to the first linear drive member 460. The first pull rod 410 is provided with a track or groove for the second pull rod 440 to slide on, ensuring that the second pull rod 440 can slide stably on it. As the main load-bearing and transmission component of the entire push-pull assembly 400, the first pull rod 410, driven by the first linear drive member 460, achieves linear movement along the screw axis, thereby driving the pull head 420 and the connected screw to move between the feed position, the heating zone, and the discharge position, completing the screw's feeding and discharging operations.

[0058] The pull head 420 is block-shaped and fixedly connected to the end of the first pull rod 410. The pull head 420 has several pull holes 421, the number of which corresponds to the number of guide holes 330 on the guide support 300, and their positions are one-to-one. The diameter of the pull holes 421 is slightly larger than the diameter of the lead screw, allowing the lead screw to pass through smoothly. The pull head 420 engages with the lead screw through the pull holes 421, providing a connection point for the lead screw, enabling the first pull rod 410 to move the lead screw via the pull head 420. Simultaneously, the pull head 420 provides a mounting base for the arc-shaped locking part 430 and the elastic element 450, ensuring effective gripping and release of the lead screw by the entire push-pull assembly.

[0059] The arc-shaped locking part 430 is shaped to fit the outer contour of the lead screw, so as to better lock the lead screw. The arc-shaped locking part 430 is slidably disposed on one side of the pull hole 421 along the radial direction of the pull hole 421, and its outer surface has a push-in inclined surface 431 for cooperating with the push-in inclined surface 441 of the second pull rod 440. The surface of the arc-shaped locking part 430 near the lead screw can be designed with anti-slip texture to increase the friction between it and the lead screw, ensuring that the lead screw will not slip during the push-pull process.

[0060] Function: When the arc-shaped locking part 430 slides to the appropriate position in the pull hole 421, it can lock the lead screw, forming a reliable connection between the pull head 420 and the lead screw, ensuring that the lead screw can move along with the first pull rod 410 during the push and pull process. When it is necessary to release the lead screw, the arc-shaped locking part 430 is reset under the action of the elastic element 450, moving away from the lead screw, making it easy for the lead screw to disengage from the pull hole 421.

[0061] The second pull rod 440 is slender and rod-shaped, and is slidably mounted on the first pull rod 410. One end of the second pull rod 440 has a pushing inclined surface 441, which abuts against the pushed inclined surface 431 of the arc-shaped locking part 430. The other end of the second pull rod 440 is connected to the second linear drive member 470 so that it can slide on the first pull rod 410 under the drive of the second linear drive member 470. The second pull rod 440 slides under the drive of the second linear drive member 470, and through the interaction between the pushing inclined surface 441 and the pushed inclined surface 431 of the arc-shaped locking part 430, it pushes multiple arc-shaped locking parts 430 to slide radially along the pull hole 421, thereby realizing the locking or unlocking operation of multiple lead screws and controlling the connection and separation between the lead screw and the pull head 420.

[0062] The elastic element 450 is typically a spring, with one end abutting against the arc-shaped locking part 430 and the other end abutting against the pull head 420. The spring constant is selected according to actual needs to ensure that, under normal working conditions, it can provide sufficient elastic force to reset the arc-shaped locking part 430, but without affecting the arc-shaped locking part 430's ability to lock the lead screw under the push of the second pull rod 440. The elastic element 450 provides the arc-shaped locking part 430 with a force to reset it away from the lead screw. When the second pull rod 440 no longer applies a pushing force to the arc-shaped locking part 430, the elastic force of the elastic element 450 returns the arc-shaped locking part 430 to its initial position, thereby releasing the lead screw, facilitating the installation, removal, and replacement of the lead screw, and realizing the automatic release function of the push-pull assembly for the lead screw.

[0063] The first linear drive 460 can be a linear drive device such as a cylinder, hydraulic cylinder, or electric push rod. Taking an electric push rod as an example, it consists of a motor, a lead screw, a nut, and a housing. The motor acts as a power source, driving the lead screw to rotate. The nut is threaded with the lead screw, and when the lead screw rotates, the nut moves along the lead screw axis, thereby driving the first pull rod 410 connected to the nut to move. The first linear drive 460 is fixed to the frame of the equipment by a mounting base to ensure stability during operation. The first linear drive 460 provides power to the first pull rod 410, controlling the moving speed, displacement, and direction of the first pull rod 410, realizing the accurate movement of the lead screw between the feeding position, the heating zone, and the discharging position, and meeting the control requirements for feeding and discharging actions during the lead screw heat treatment process.

[0064] The structure of the second linear drive 470 is similar to that of the first linear drive 460, and it can also be a linear drive device such as a cylinder, hydraulic cylinder, or electric push rod. Taking the electric push rod as an example, it is mounted on the first pull rod 410, and its push rod is connected to the second pull rod 440. By controlling the rotation of the motor, the extension and retraction of the push rod is realized, thereby driving the second pull rod 440 to slide on the first pull rod 410. The second linear drive 470 controls the movement of the second pull rod 440, thereby controlling the locking and unlocking action of the arc-shaped locking part 430 on the lead screw. By adjusting the stroke and speed of the second linear drive 470, it can be ensured that the arc-shaped locking part 430 can accurately and reliably lock or release the lead screw, improving the accuracy and reliability of the push-pull assembly operation.

[0065] During operation, the first linear drive 460 of the push-pull assembly 400 on the feed position 310 side drives the first pull rod 410 to move, causing the pull head 420 to move near the lead screw of the feed position 310. At this time, the second linear drive 470 drives the second pull rod 440 to retract, and under the action of the elastic member 450, the arc-shaped locking part 430 is in the initial position away from the lead screw, and the lead screw can smoothly pass through the pull hole 421.

[0066] After the lead screw passes through the pull hole 421, the second linear drive 470 drives the second pull rod 440 to extend. The pushing inclined surface 441 of the second pull rod 440 interacts with the pushed inclined surface 431 of the arc-shaped locking part 430, pushing the arc-shaped locking part 430 to slide radially along the pull hole 421 until the arc-shaped locking part 430 locks the lead screw. Then, the first linear drive 460 drives the first pull rod 410 to move towards the heating area, causing the lead screw to sequentially enter the guide hole 330 of the guide support 300 and then enter the heating coil 100 for heating.

[0067] After the lead screw completes heating and cooling, the first linear drive 460 drives the first pull rod 410 to move to the lead screw position at the discharge position 320. At this time, the second linear drive 470 drives the second pull rod 440 to retract, and the elastic force of the elastic element 450 causes the arc-shaped locking part 430 to reset, releasing the lead screw.

[0068] Subsequently, the arc-shaped locking part 430 of the push-pull assembly 400 on the discharge position 320 side locks the lead screw, and the first linear drive member 460 of the push-pull assembly 400 on the discharge position 320 side drives the first pull rod 410 to move away from the discharge position 320, and the lead screw disengages from the pull hole 421, completing the discharge process. Repeating the above steps allows for the heat treatment operation of the next batch of lead screws.

[0069] The precise gripping and release of the lead screw is achieved through the cooperation of the arc-shaped locking part 430, the second pull rod 440, and the elastic element 450. The arc-shaped locking part 430 can reliably hold the lead screw, ensuring that it will not fall off during the push-pull process, while also allowing for easy release of the lead screw when needed, thus improving the accuracy and stability of the feeding and discharging operations.

[0070] The arrangement of the first linear drive 460 and the second linear drive 470 automates the operation of the push-pull assembly 400. By controlling the movement of the two linear drives, the feeding and discharging actions of the lead screw can be controlled, improving the production efficiency and operational reliability of the equipment and reducing errors that may be caused by manual operation.

[0071] The automation and precision of the entire push-pull process make the feeding and discharging of the lead screw smoother and more efficient, reducing time wastage caused by improper operation. It can better coordinate with the working rhythm of the heating coil 100 and the water spray component 200, thereby improving the overall production efficiency of the lead screw heat treatment equipment.

[0072] In some examples, the end of the pull head 420 away from the first pull rod 410 has a tapered head 422 for easy insertion between several lead screws, and the receiving seat 600 is located on one side of the discharge position 320 for receiving the lead screw after heat treatment.

[0073] For example, the conical head 422 is integrally formed at the end of the pull head 420 away from the first pull rod 410. Its shape is conical, and the taper is designed according to the actual application scenario to ensure sufficient guiding effect without making the head too sharp and damaging the lead screw. The material of the conical head 422 is the same as that of the pull head 420, ensuring overall strength and durability. During the feeding process, when the pull head 420 approaches the lead screw to be processed, the conical head 422 can easily insert between several lead screws. Its conical structure acts as a guide, making it easier for the pull head 420 to align with the end of the lead screw, improving the accuracy and efficiency of the connection between the pull head 420 and the lead screw, reducing the wasted operation time caused by alignment difficulties, and further optimizing the feeding process.

[0074] The shape of the receiving seat 600 is designed according to the spatial layout of the discharge position 320 and the length and number of lead screws. It is generally a groove-shaped or disc-shaped structure with a certain depth. The receiving seat 600 is fixed to the equipment frame on one side of the discharge position 320 by bolts or welding to ensure its stable position. The receiving seat 600 is used to receive the heat-treated lead screws. When the push-pull assembly 400 of the discharge position pulls the heat-treated lead screw out of the heating area and releases it, the lead screw falls directly into the receiving seat 600. This not only facilitates the collection of the treated lead screws by the operators, but also avoids the damage that may be caused by the lead screws falling directly to the ground, ensuring the quality of the lead screws, and also making the work site cleaner and more orderly.

[0075] The tapered head 422 significantly improves the ease of connection between the feed head 420 and the lead screw, making the feeding process smoother, reducing the time spent aligning with the lead screw, and improving feeding efficiency and accuracy. This helps to further improve the overall production efficiency of the heat treatment equipment and reduce the risk of equipment failure due to operational errors.

[0076] The receiving seat 600 provides a safe and orderly storage location for the lead screw after discharge, avoiding damage caused by the lead screw falling to the ground, facilitating subsequent collection and sorting work, improving the management level of the production site, and also indirectly protecting the quality of the lead screw, ensuring that the performance of the heat-treated lead screw is not affected by the subsequent handling process.

[0077] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heat treatment device for producing lead screws, characterized in that, include: A heating coil (100) is used to heat the lead screw to be processed; A water spray component (200) is provided on one side of the lead screw and is used to spray water to cool the lead screw after heating. The material guide support (300) is provided on both sides of the heating coil (100). The two sides of the material guide support (300) are respectively the feed position (310) and the discharge position (320). The material guide support (300) is formed with a plurality of circumferentially arranged material guide holes (330). Each material guide hole (330) is used for one lead screw to pass through. The push-pull assembly (400) is provided on one side of the feed position (310) and one side of the discharge position (320). The push-pull assembly (400) is used to push and pull several lead screws to move.

2. The heat treatment equipment for lead screw production according to claim 1, characterized in that, It also includes aperture adjustment components (500), which are disposed on the material guide support (300). Each aperture adjustment component (500) is used to adjust the size of one of the material guide holes (330). The aperture adjustment component (500) includes: An annular seat (510) is disposed on the material guide support (300); Adjusting slider (520), the adjusting slider (520) is slidably disposed on the annular seat (510), the sliding direction is oblique to the radial direction of the annular seat (510), and is arranged in several circles. The material guide hole (330) is formed between the several adjusting sliders (520), and the material guide hole (330) can be enlarged or reduced after the several adjusting sliders (520) slide synchronously. Rotate the adjusting ring (530), which is rotatably set relative to the annular seat (510), and after rotation, it can push several adjusting sliders (520) to slide synchronously.

3. The heat treatment equipment for lead screw production according to claim 2, characterized in that, The rotating adjustment ring (530) has a plurality of arc-shaped push grooves (531), and the adjusting slider (520) has a plurality of cylindrical push portions (521). The cylindrical push portions (521) are slidably disposed in the arc-shaped push grooves (531). After the rotating adjustment ring (530) rotates, it can push the cylindrical push portions (521) and the adjusting slider (520) to slide through the arc-shaped push grooves (531), thereby increasing or decreasing the size of the guide hole (330).

4. The heat treatment equipment for lead screw production according to claim 3, characterized in that, The outer wall of the rotating adjustment ring (530) has an outer toothed ring (532), and the outer toothed rings (532) of two adjacent aperture adjustment components (500) mesh with each other, thereby causing several rotating adjustment rings (530) to rotate synchronously.

5. A heat treatment device for lead screw production according to claim 4, characterized in that, The aperture adjustment assembly (500) further includes: A locking bolt (540) is threaded onto the rotating adjusting ring (530) to lock the rotating adjusting ring (530) onto the material guide support (300), thereby locking the size of the material guide hole (330).

6. The heat treatment equipment for lead screw production according to claim 1, characterized in that, The push-pull assembly (400) includes: First pull rod (410), the first pull rod (410) is movable; A pull head (420) is disposed at the end of the first pull rod (410) and has a plurality of pull holes (421), each of which is used to pass through a lead screw; An arc-shaped locking part (430) is slidably disposed on one side of the pull hole (421) along the radial direction of the pull hole (421), and is used to lock the lead screw in the pull hole (421) after sliding.

7. A heat treatment device for lead screw production according to claim 6, characterized in that, The arc-shaped locking part (430) has a pushed inclined surface (431) and further includes: The second pull rod (440) is slidably disposed on the first pull rod (410) and has a pushing inclined surface (441). The pushing inclined surface (441) abuts against the pushed inclined surface (431). After the second pull rod (440) slides, it is used to push the arc-shaped locking part (430) to slide and lock the lead screw through the pushing inclined surface (441) and the pushed inclined surface (431).

8. A heat treatment device for producing lead screws according to claim 7, characterized in that, The push-pull assembly (400) also includes: An elastic element (450) is provided, with one end acting on the arc-shaped locking part (430) and the other end acting on the pull head (420) to provide a force for the arc-shaped locking part (430) to return to its original position away from the lead screw. A first linear drive (460) is connected to the first pull rod (410) and is used to drive the first pull rod (410) to move. The second linear drive (470) is disposed on the first pull rod (410) and connected to the second pull rod (440) for driving the second pull rod (440) to move.

9. A heat treatment device for producing lead screws according to claim 8, characterized in that, The end of the pull head (420) away from the first pull rod (410) has a tapered head (422) for easy insertion between several lead screws, and also includes: A receiving seat (600) is provided on one side of the discharge position (320) and is used to receive the lead screw after heat treatment.

10. A heat treatment method for producing lead screws, characterized in that, The lead screw is heat-treated using the heat treatment equipment for lead screw production as described in any one of claims 1 to 9.

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