Efficient heat treatment system for screw production

Abstract

The invention relates to the technical field of heat treatment equipment, in particular to an efficient heat treatment system for screw production, which comprises an outer cylinder and an inner cylinder rotationally connected with the outer cylinder, the rotating axial direction of the inner cylinder is horizontally arranged, the end face of the inner cylinder is provided with an opening, and the opening of the inner cylinder is provided with a discharging door; a material turning strip is arranged on the inner wall of the inner barrel and inclines towards the opening from the side, away from the opening, of the inner barrel in the rotating direction of the inner barrel, and collision bodies capable of making contact with each other are arranged between the outer wall of the inner barrel and the inner wall of the outer barrel; a feeding inner opening is formed in the peripheral wall of the inner cylinder, a sealing plate capable of shielding the feeding inner opening is arranged on the peripheral wall of the inner cylinder, the sealing plate can eccentrically rotate, a reset piece is further arranged on the peripheral wall of the inner cylinder, and the reset piece is used for resetting the sealing plate to shield the feeding inner opening; a trigger part is arranged on the inner wall of the top of the outer cylinder and can abut against the sealing plate, and the feeding inner opening is opened. By the adoption of the scheme, the problems that in the batch heat treatment process of screws in the prior art, the screws are heated unevenly, and production efficiency is low are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat treatment equipment, in particular to a high-efficiency heat treatment system for screw production. Background Art

[0002] During the production process of fasteners, the fasteners need to be heat treated to improve their strength and wear resistance. For example, the screws are quenched, annealed, and other operations are performed to enhance their mechanical properties. The existing heat treatment mainly relies on conveyor belts for loading and unloading, but manual operation is still required during loading and unloading, which increases the labor intensity of the staff and reduces production efficiency. During heat treatment, a quenching furnace is used to quench the screws in batches, but the quenching furnace rotates slowly, and the internal screws turn unevenly during the rotation process, which may cause uneven surface temperature of the screws, resulting in uneven hardness of the screws, affecting their toughness, and ultimately reducing the consistency of the mechanical properties of the screws. Therefore, there is an urgent need for a heat treatment system that can uniformly heat the screws and improve production efficiency during the batch heat treatment of screws. Summary of the Invention

[0003] The present invention aims to provide a high-efficiency heat treatment system for screw production, so as to solve the problems of uneven heating of screws and low production efficiency during batch heat treatment of screws in the prior art.

[0004] The present invention provides the following basic scheme: A high-efficiency heat treatment system for screw production includes an outer cylinder and an inner cylinder rotatably connected to the outer cylinder. The rotation axis of the inner cylinder is arranged horizontally, the end face of the inner cylinder is provided with an opening, and the opening of the inner cylinder is provided with a material unloading door; the inner wall of the inner cylinder is provided with a material turning strip, which is inclined from the side of the inner cylinder away from the opening toward the opening along the rotation direction of the inner cylinder, and a collision body that can contact each other is provided between the outer wall of the inner cylinder and the inner wall of the outer cylinder.

[0005] Furthermore, an inner feeding port is provided on the peripheral wall of the inner cylinder, and a sealing plate capable of covering the inner feeding port is provided on the peripheral wall of the inner cylinder. The sealing plate can rotate eccentrically, and a reset part is also provided on the peripheral wall of the inner cylinder. The reset part is used to reset the sealing plate to cover the inner feeding port; a trigger part is provided on the inner wall of the top of the outer cylinder, and the trigger part can be abutted against the sealing plate to open the inner feeding port; an outer feeding port is provided on the peripheral wall of the top of the outer cylinder, and the outer feeding port is directly opposite to the opened inner feeding port.

[0006] Furthermore, the diameter of the inner feeding port is larger than the diameter of the outer feeding port.

[0007] Furthermore, the sealing plate is rotatably connected to the peripheral wall of the inner cylinder through a feeding shaft. The reset member is a torsion spring, which is sleeved on the feeding shaft. One end of the torsion spring is fixedly connected to the peripheral wall of the inner cylinder, and the other end is fixedly connected to the sealing plate.

[0008] Furthermore, the reset member is a tension spring, and a spring seat is provided on the peripheral wall of the inner cylinder. One end of the tension spring is connected to the sealing plate, and the other end is connected to the spring seat.

[0009] Furthermore, a collision plate is provided on the peripheral wall of the inner cylinder, and the collision plate can abut against the sealing plate when the sealing plate is reset.

[0010] Furthermore, a limiting plate is provided on the peripheral wall of the inner cylinder, which includes a fixedly connected parallel portion and a connecting portion. The parallel portion is parallel to the side of the sealing plate away from the inner feeding port, and can be offset against the side of the sealing plate away from the inner feeding port. The connecting portion fixedly connects the parallel plate and the peripheral wall of the inner cylinder.

[0011] Furthermore, the peripheral wall of the inner tube is provided with a plurality of hollow holes.

[0012] Furthermore, a slag discharge port is provided on the peripheral wall of the bottom of the outer cylinder.

[0013] Furthermore, the collision body includes a first collision body provided on the outer wall of the inner cylinder, and a second collision body provided on the inner wall of the outer cylinder, and the second collision body is located on the moving trajectory of the first collision body; the number of the first collision body and the second collision body are two, and they are symmetrically arranged respectively; the angle between the two first collision bodies and the axis of rotation of the inner cylinder is an acute angle, and the angle between the two second collision bodies and the axis of rotation of the inner cylinder is an obtuse angle.

[0014] Beneficial effects: 1. In this solution, the turning bar drives the screws as the inner barrel rotates, allowing them to turn evenly. This improves the uniformity of the screw surface temperature distribution, achieves uniform heating of the screws, and enhances their mechanical properties. When unloading, the unloading door is opened, and the turning bar guides the screws, improving their drop efficiency.

[0015] 2. In this solution, during the rotation of the inner cylinder, the collision bodies contact and collide with each other, causing the inner cylinder to vibrate, and the screws are easily moved by the turning strips. Combined with the hollow holes in the inner cylinder, impurities in the screws can be shaken out of the inner cylinder, achieving screw impurity removal. At the same time, the slag discharge port on the outer cylinder allows impurities to automatically fall, facilitating unified cleaning.

[0016] 3. In this solution, the screws can be quickly loaded by setting the inner loading port and the outer loading port. During use, when the inner loading port of the inner cylinder rotates to the top, the trigger part causes the sealing plate to rotate eccentrically, opening the inner loading port. At this time, loading can be carried out. After loading is completed, the inner cylinder continues to rotate, the trigger part slides over the edge of the sealing plate, and the sealing plate is reset under the action of the reset part, blocking the inner loading port to prevent the screws in the inner cylinder from falling out. The setting of the limiting plate limits the sealing plate. When the inner loading port moves to the bottom, the force of the sealing plate blocking the inner loading port is increased to prevent the screws from falling out of the inner loading port. By adopting this solution and this design, automatic loading of screws can be realized, effectively improving the efficiency of screw production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of an embodiment of a high-efficiency heat treatment system for screw production according to the present invention; Figure 2 This invention is a high-efficiency heat treatment system for screw production Figure 1 Cross-section view from medium AA perspective; Figure 3 This is a schematic structural diagram of an embodiment of a high-efficiency heat treatment system for screw production according to the present invention, with the outer cylinder removed; Figure 4 This is a schematic structural diagram of an embodiment of a high-efficiency heat treatment system for screw production according to the present invention, with the outer cylinder removed, from another perspective; Figure 5 This is a top view of an embodiment of a high-efficiency heat treatment system for screw production of the present invention with the outer cylinder removed. DETAILED DESCRIPTION

[0018] The following is further described in detail through specific implementation methods: The reference numerals in the drawings of the specification include: outer cylinder 1, inner cylinder 2, turning strip 3, inner feeding port 4, sealing plate 5, trigger part 6, outer feeding port 7, limiting plate 8, first collision body 9, and second collision body 10.

[0019] Example An efficient heat treatment system for screw production, as shown in the attached Figure 1 As shown, the heat treatment apparatus comprises an outer cylinder 1 and an inner cylinder 2 rotatably connected to the outer cylinder 1. The outer cylinder 1 is mounted on a frame, with its end face arranged vertically. The end face of the outer cylinder 1 is provided with an opening, and the opening of the outer cylinder 1 is provided with a safety door. The safety door engages with the opening, and the opening of the outer cylinder 1 is sealed by the safety door, thereby improving the operational safety during the heat treatment process.

[0020] The rotating shaft of the inner cylinder 2 is arranged horizontally, and the end surface of the inner cylinder 2 is provided with an opening, and the opening of the inner cylinder 2 is provided with a material discharge door. Specifically: the inner cylinder 2 is located inside the outer cylinder 1, and the end surface of the inner cylinder 2 is arranged vertically. The end surface of the outer cylinder 1 away from the opening is rotatably connected to a rotating shaft. The rotating shaft is arranged coaxially with the outer cylinder 1, and one end of the rotating shaft passes through the end surface of the outer cylinder 1 and is fixedly connected to the end surface of the inner cylinder 2 away from the opening. In this embodiment, the rotating shaft is rotatably connected to the outer cylinder 1 via a bearing, and the end of the rotating shaft is fixedly connected to the end surface of the inner cylinder 2 via a flange. The rotating shaft is driven by a motor as a power source. For example, the end of the rotating shaft away from the inner cylinder 2 is connected to the output shaft of the motor via a gear or rack transmission. The motor-driven rotating shaft is a very mature existing technology and will not be described in detail.

[0021] The inner wall of the inner cylinder 2 is provided with a turning strip 3. The turning strip 3 is inclined from the side of the inner cylinder 2 away from the opening toward the opening along the direction of rotation of the inner cylinder 2. There are multiple turning strips 3, evenly distributed along the circumference of the inner cylinder 2. In this embodiment, there are six turning strips 3, which are integrally formed with the inner cylinder 2 and have rounded edges. The turning strips 3 drive the screws during rotation of the inner cylinder 2, ensuring uniform turning of the screws. This improves the uniformity of the screw surface temperature distribution, achieves uniform heating of the screws, and enhances the mechanical properties of the screws. When unloading, the unloading door is opened, and the turning strips 3 guide the screws, improving the efficiency of the screws' drop.

[0022] As attached Figure 2 、 3 As shown in Figures 4 and 5, the circumferential wall of the inner cylinder 2 is provided with an inner feeding port 4. A sealing plate 5 capable of blocking the inner feeding port 4 is provided on the circumferential wall of the inner cylinder 2. The sealing plate 5 can rotate eccentrically. A reset member is also provided on the circumferential wall of the inner cylinder 2. The reset member is used to reset the sealing plate 5 to block the inner feeding port 4. Specifically, a flat surface is provided on the top of the outer wall of the inner cylinder 2. The inner feeding port 4 is provided on the flat surface and communicates with the inner wall of the inner cylinder 2. The flat surface makes it easy to install the sealing plate 5 and the reset member, etc., and also facilitates the movement of the sealing plate 5, thereby reducing the failure rate during use.

[0023] The end face of the sealing plate 5 is eccentrically connected to the circumferential wall of the inner tube 2 via a feed shaft. The feed shaft is fixedly connected to the circumferential wall of the inner tube 2, and the sealing plate 5 and the feed shaft are connected via a bearing. In this embodiment, the reset element is a torsion spring, which is sleeved on the feed shaft. One end of the torsion spring is fixedly connected to the circumferential wall of the inner tube 2, and the other end is fixedly connected to the sealing plate 5. In the initial state, the torsion spring is unloaded, and the sealing plate 5 blocks the inner feed opening 4. When the sealing plate 5 is forced to rotate and open the inner feed opening 4, the torsion spring is loaded. After the force on the sealing plate 5 disappears, the sealing plate 5 returns to its original position under the force of the torsion spring to block the inner feed opening 4 again.

[0024] In other embodiments, the reset member is a tension spring, and a spring seat is further provided on the circumferential wall of the inner cylinder 2. The spring seat is located on one side of the sealing plate 5. One end of the tension spring is connected to the sealing plate 5, and the other end is connected to the spring seat. In the initial state, the tension spring is unloaded, and the sealing plate 5 blocks the internal loading port 4. When the sealing plate 5 is forced to rotate and open the internal loading port 4, the tension spring is loaded. After the force on the sealing plate 5 disappears, the sealing plate 5 returns to its original position under the force of the tension spring and blocks the internal loading port 4 again.

[0025] The inner wall of the top of the outer cylinder 1 is provided with a trigger portion 6, which can abut against the sealing plate 5 to open the inner feeding port 4. Specifically, the trigger portion 6 is located on the movement trajectory of the sealing plate 5. When the inner cylinder 2 rotates, the sealing plate 5 abuts the trigger portion 6, and the sealing plate 5 is subjected to the force of the trigger portion 6, causing the sealing plate 5 to rotate eccentrically, opening the inner feeding port 4. During the movement of the inner cylinder 2, the edge of the sealing plate 5 abuts against the trigger portion 6 and slides until the sealing plate 5 separates from the trigger portion 6. The sealing plate 5 is reset by the reset member, blocking the inner feeding port 4. In this embodiment, the trigger portion 6 is integrally formed with the outer cylinder 1.

[0026] The top wall of the outer tube 1 is provided with an external loading port 7, which faces the opened internal loading port 4. The diameter of the internal loading port 4 is larger than that of the external loading port 7. The arrangement of the internal loading port 4 and the external loading port 7 allows for rapid loading of screws. The smaller diameter of the external loading port 7 facilitates the screws to fall from the external loading port 7 into the internal loading port 4.

[0027] The inner cylinder 2 is also provided with a collision plate on its circumferential wall, which abuts against the sealing plate 5 when it is reset. In this embodiment, the collision plate is integrally formed with the inner cylinder 2. This arrangement allows the sealing plate 5 to collide with the collision plate when it is reset, causing the inner cylinder 2 to vibrate again. This periodic vibration ensures more uniform distribution and rotation of the internal screws, improving the consistency of the screw heat treatment and thus enhancing product quality and pass rate.

[0028] In other embodiments, when the sealing plate 5 contacts the collision plate, it can block the inner feeding port 4. When the sealing plate 5 contacts the collision plate, the torsion spring is stressed. With this arrangement, before the torsion spring returns to a stress-free state, the sealing plate 5 collides with the collision plate, increasing the collision force and enhancing the shaking effect of the inner cylinder 2.

[0029] The peripheral wall of the inner cylinder 2 is also provided with a limit plate 8, which includes a fixedly connected parallel portion and a connecting portion. The parallel portion is parallel to the side of the sealing plate 5 away from the feeding inner port 4, and can abut against the side of the sealing plate 5 away from the feeding inner port 4. The connecting portion is fixedly connected to the parallel plate and the peripheral wall of the inner cylinder 2, and the limit plate 8 will not abut against the trigger portion 6. In this embodiment, the parallel portion and the connecting portion are integrally formed, the collision plate is the connecting portion, and the limit plate 8 is integrally formed with the inner cylinder 2. In other embodiments, the limit plate 8 is provided separately, that is, the limit plate 8 and the collision plate are provided as two components. The provision of the limit plate 8 limits the sealing plate 5, and when the feeding inner port 4 moves to the bottom, it increases the force of the sealing plate 5 to block the feeding inner port 4, thereby preventing the screws from falling out of the feeding inner port 4.

[0030] Between the outer wall of the inner cylinder 2 and the inner wall of the outer cylinder 1, collision bodies capable of contacting each other are provided. Specifically, the collision bodies include a first collision body 9 provided on the outer wall of the inner cylinder 2, and a second collision body 10 provided on the inner wall of the outer cylinder 1. The second collision body 10 is located on the movement trajectory of the first collision body 9. There are two first collision bodies 9 and two second collision bodies 10, each of which is symmetrically arranged. The angle between the two first collision bodies 9 and the axis of rotation of the inner cylinder 2 is acute, while the angle between the two second collision bodies 10 and the axis of rotation of the inner cylinder 2 is obtuse. In this embodiment, the first collision body 9 is integrally formed with the inner cylinder 2, and the second collision body 10 is integrally formed with the outer cylinder 1. The first collision body 9 and the second collision body 10 are hemispherical. During the rotation of the inner cylinder 2, the collision bodies contact and collide with each other, causing the inner cylinder 2 to vibrate, and the screw is easily driven by the turning strip 3 to move.

[0031] The inner tube 2 is also provided with a plurality of hollow holes on its circumference, and the outer tube 1 is provided with a slag discharge port on its bottom circumference. The hollow holes in the inner tube 2 allow impurities in the screws to be shaken out of the inner tube 2, thus achieving screw impurity removal. The slag discharge port on the outer tube 1 also allows impurities to automatically fall, making it easier to clean them uniformly.

[0032] The specific implementation process is as follows: During use, when the inner feeding opening 4 of the inner cylinder 2 rotates to the top, the triggering portion 6 causes the sealing plate 5 to rotate eccentrically, opening the inner feeding opening 4. At this time, the material can be loaded through the outer feeding opening 7. After loading is completed, the inner cylinder 2 continues to rotate, the triggering portion 6 and the edge of the sealing plate 5 slide past each other, and the sealing plate 5 returns to its original position under the action of the reset member, covering the inner feeding opening 4, thereby preventing the screws in the inner cylinder 2 from falling out. This solution and design realize automatic loading of screws, effectively improving the efficiency of screw production.

[0033] The above is only an embodiment of the present invention. Common knowledge such as the known specific structures and characteristics in the scheme is not described in detail here. Ordinary technicians in the field are aware of all common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the field can improve and implement this scheme in combination with their own abilities under the inspiration given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A high-efficiency heat treatment system for screw production, comprising an outer cylinder and an inner cylinder rotatably connected to the outer cylinder, wherein the rotation axis of the inner cylinder is arranged horizontally, an end surface of the inner cylinder is provided with an opening, and the opening of the inner cylinder is provided with a material discharge door; Its characteristics are: The inner wall of the inner cylinder is provided with a turning strip, which is inclined from the side of the inner cylinder away from the opening toward the opening along the rotation direction of the inner cylinder. A collision body capable of contacting each other is provided between the outer wall of the inner cylinder and the inner wall of the outer cylinder.

2. The high-efficiency heat treatment system for screw production according to claim 1, characterized in that: An inner feeding port is provided on the peripheral wall of the inner cylinder, and a sealing plate that can cover the inner feeding port is provided on the peripheral wall of the inner cylinder. The sealing plate can rotate eccentrically, and a reset part is also provided on the peripheral wall of the inner cylinder. The reset part is used to reset the sealing plate to cover the inner feeding port; a trigger part is provided on the inner wall of the top of the outer cylinder, and the trigger part can be abutted against the sealing plate to open the inner feeding port; an outer feeding port is provided on the peripheral wall of the top of the outer cylinder, and the outer feeding port is directly opposite to the opened inner feeding port.

3. The high-efficiency heat treatment system for screw production according to claim 2, characterized in that: The diameter of the inner feeding port is larger than the diameter of the outer feeding port.

4. The high-efficiency heat treatment system for screw production according to claim 2, characterized in that: The sealing plate is rotatably connected to the peripheral wall of the inner cylinder through the feeding shaft. The reset member is a torsion spring, which is sleeved on the feeding shaft. One end of the torsion spring is fixedly connected to the peripheral wall of the inner cylinder, and the other end is fixedly connected to the sealing plate.

5. The high-efficiency heat treatment system for screw production according to claim 2, characterized in that: The reset member is a tension spring, and a spring seat is further provided on the peripheral wall of the inner cylinder. One end of the tension spring is connected to the sealing plate, and the other end is connected to the spring seat.

6. The high-efficiency heat treatment system for screw production according to claim 4, characterized in that: The peripheral wall of the inner cylinder is further provided with a collision plate, which can abut against the sealing plate when the sealing plate is reset.

7. The high-efficiency heat treatment system for screw production according to claim 6, characterized in that: The peripheral wall of the inner cylinder is also provided with a limiting plate, which includes a fixedly connected parallel portion and a connecting portion. The parallel portion is parallel to the side of the sealing plate away from the inner feeding port and can be offset against the side of the sealing plate away from the inner feeding port. The connecting portion is fixedly connected to the parallel plate and the peripheral wall of the inner cylinder.

8. The high-efficiency heat treatment system for screw production according to claim 7, characterized in that: The peripheral wall of the inner tube is also provided with a plurality of hollow holes.

9. The high-efficiency heat treatment system for screw production according to claim 8, characterized in that: A slag discharge port is provided on the peripheral wall of the bottom of the outer cylinder.

10. The high-efficiency heat treatment system for screw production according to any one of claims 1 to 9, characterized in that: The collision body includes a first collision body arranged on the outer wall of the inner cylinder, and a second collision body arranged on the inner wall of the outer cylinder, and the second collision body is located on the moving trajectory of the first collision body; the number of the first collision body and the second collision body are two, and they are symmetrically arranged respectively; the angle between the two first collision bodies and the axis of rotation of the inner cylinder is an acute angle, and the angle between the two second collision bodies and the axis of rotation of the inner cylinder is an obtuse angle.

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