Production equipment and processing technology of corrosion-resistant screw for fixing air conditioner outdoor unit

Abstract

The invention relates to the field of screw production equipment, in particular to corrosion-resistant screw production equipment for fixing an air conditioner outdoor unit and a machining process thereof.The corrosion-resistant screw production equipment comprises a heat treatment furnace, a stirring impeller is additionally arranged in the heat treatment furnace, and a driving motor is fastened to the top of the heat treatment furnace and used for driving the stirring impeller to rotate and ascend and descend in the heat treatment furnace; a cooling channel is formed in the heat treatment furnace in the circumferential side direction of the heat treatment furnace, an air inlet and an air outlet are formed in the upper end and the lower end of the heat treatment furnace respectively, and the air inlet and the air outlet are both communicated with the cooling channel. The purpose of the application is to realize rapid homogenization of the temperature in the furnace and avoid the phenomenon of local overheating or local supercooling, so that hot airflow in the furnace can penetrate through each corner of the hearth, the temperature distribution in the furnace is extremely uniform, and the service life of the furnace is prolonged. The consistency of the hardness and the strength of the screws in the same batch after being treated by the heat treatment furnace is improved, so that the subsequent processing production of the screws is guaranteed.

Description

Technical Field

[0001] This application relates to the field of screw manufacturing equipment, and in particular to a production equipment for corrosion-resistant screws used for fixing air conditioner outdoor units and its processing technology. Background Technology

[0002] In the screw manufacturing process, the heat treatment furnace is a key piece of equipment to ensure the mechanical properties (such as strength, hardness, and toughness) and service life of the product.

[0003] In related technologies, temperature is the core parameter of heat treatment. Its unevenness or inaccurate control can directly lead to inconsistent screw performance. Hot gas in the heat treatment furnace tends to accumulate at the top of the furnace, resulting in localized overheating. This can easily cause screws from the same batch to have inconsistent hardness and strength after heat treatment, which is detrimental to subsequent processing and production. Summary of the Invention

[0004] This application provides a production equipment and processing technology for corrosion-resistant screws used to fix outdoor units of air conditioners. The purpose is to achieve rapid and uniform temperature in the furnace, avoid local overheating or undercooling, and ensure that the hot airflow in the furnace can penetrate to every corner of the furnace chamber, making the temperature distribution in the furnace extremely uniform. This is beneficial to improving the consistency of hardness and strength of screws in the same batch after heat treatment in the furnace, thereby ensuring subsequent processing and production.

[0005] This application provides a production equipment and processing technology for corrosion-resistant screws used to fix outdoor units of air conditioners, adopting the following technical solution: A production equipment for corrosion-resistant screws used to fix outdoor units of air conditioners includes a heat treatment furnace. An agitator impeller is installed inside the heat treatment furnace. A drive motor is fixed to the top of the heat treatment furnace. The drive motor is used to drive the agitator impeller to rotate and move up and down inside the heat treatment furnace. A cooling channel is opened along the periphery of the heat treatment furnace. An air inlet and an exhaust outlet are respectively provided at the upper and lower ends of the heat treatment furnace, and both the air inlet and the exhaust outlet are connected to the cooling channel.

[0006] By adopting the above technical solution, as the stirring impeller rotates and rises and falls inside the heat treatment furnace, the hot gas inside the furnace is stirred and mixed in all directions, both horizontally and vertically. This allows the hot gas inside the furnace to flow fully, which in turn helps the hot gas flow to penetrate to every corner of the furnace chamber, resulting in an extremely uniform temperature distribution inside the furnace. This is beneficial for improving the consistency of hardness and strength of screws from the same batch after heat treatment, thereby ensuring their subsequent processing and production.

[0007] When the temperature inside the furnace is too high and needs to be cooled, cold air is injected into the cooling channel through the air inlet to cool the heat treatment furnace. After cooling to the specified temperature, the valve at the exhaust port at the bottom of the furnace is opened to allow the cold air in the cooling channel to be discharged.

[0008] Preferably, a rotating shaft is provided vertically between the drive motor and the stirring impeller. The rotating shaft includes a first rod and a second rod. The top of the first rod is connected to the drive end of the drive motor, and the bottom of the first rod is connected to the second rod. The heat treatment furnace has a through-hole with internal threads. The second rod is a screw and is inserted vertically into the internal thread hole. The end of the second rod away from the first rod is connected to the stirring impeller.

[0009] By adopting the above technical solution, during stirring, the drive motor drives the first rod to rotate. Simultaneously, the first rod rotates, driving the second rod to rotate as well. As the second rod rotates, it moves vertically up and down within the internal threaded hole. This rotation and movement of the second rod simultaneously drives the stirring impeller to rotate and move up and down within the heat treatment furnace. This process, through the stirring impeller, thoroughly stirs the hot gas within the furnace, resulting in a more uniform temperature distribution.

[0010] Preferably, a first telescopic spring is installed vertically between the first rod and the second rod, with one end of the first telescopic spring connected to the first rod and the other end of the first telescopic spring connected to the second rod.

[0011] By adopting the above technical solution, the first rod and the second rod are connected by the first telescopic spring, thereby enabling the second rod to rotate under the drive of the first rod while rising and falling in the vertical direction.

[0012] Preferably, a drive fan is installed in the cooling channel, and the drive fan is located at the air inlet.

[0013] By adopting the above technical solution, when the heat treatment furnace needs to be cooled, the cold air injected into the cooling channel from the air inlet, driven by the corresponding fan, can quickly fill the entire cooling channel, thereby accelerating the cooling efficiency of the heat treatment furnace. Simultaneously, the fan's movement of the cold air within the cooling channel ensures continuous flow, preventing it from accumulating in any one area and allowing for more even distribution, thus improving the cooling effect on the heat treatment furnace.

[0014] Preferably, a rotating gear is installed on the side of the drive fan near the first rod body. The rotating gear is vertically arranged and connected to the drive fan via a rotating shaft. A bevel gear is integrally fitted on the periphery of the first rod body in the horizontal direction, and the bevel gear is meshed with the rotating gear.

[0015] By adopting the above technical solution, when the drive fan rotates, the drive motor drives the first rod to rotate, and the bevel gear rotates synchronously following the first rod. During the rotation, the bevel gear meshes with the two rotating gears, thereby synchronously driving the two rotating gears to rotate. Simultaneously, the two rotating gears drive the corresponding drive fans to rotate via their respective shafts, thus accelerating the flow of cool air within the cooling channel.

[0016] Preferably, multiple sets of agitating plates are added to the side of the stirring impeller away from the second rod body, and the agitating plates are horizontally arranged.

[0017] By adopting the above technical solution, the stirring impeller drives these stirring plates to rotate and rise simultaneously during the rotation and lifting process. In turn, these stirring plates further enhance the stirring of the hot gas in the furnace, making the temperature distribution in the furnace more uniform.

[0018] Preferably, a limit rod is installed vertically at the bottom of the stirring impeller. The limit rod is hollow inside. A guide rod is installed vertically between the limit rod and the stirring plate. One end of the guide rod is connected to the stirring plate, and the other end of the guide rod extends into the limit rod. A second telescopic spring is installed vertically between the guide rod and the inner wall of the limit rod.

[0019] By adopting the above technical solution, during the rotation and lifting process of the agitator plates, since there are multiple sets of agitator plates, to effectively avoid collisions between them during rotation and lifting, the movement of the agitator plates is restricted by limit rods and guide rods, preventing them from swinging around randomly during rotation and lifting. Simultaneously, a second telescopic spring connects the guide rod and the limit rod. During the lifting and lowering process of the agitator impeller, the deformation of the second telescopic spring drives the guide rod to move up and down along the length of the limit rod, which helps to further increase the frequency of vertical agitation of the agitator plates, thereby further improving the agitation effect on the hot gas inside the furnace.

[0020] Preferably, the agitator plate has an overall wave-like structure.

[0021] By adopting the above technical solution, the agitator plate is designed with a wave-like structure, which significantly increases its surface area and allows it to come into contact with more fluid during its rotation and lifting. Furthermore, the wave-like, uneven surface continuously disturbs the flow lines, resulting in faster and more uniform mixing of hot gas within the furnace, thus further improving the agitator plate's effect on stirring the hot gas inside the furnace.

[0022] A manufacturing process for corrosion-resistant screws used for fixing air conditioner outdoor units, employing the aforementioned production equipment for corrosion-resistant screws used for fixing air conditioner outdoor units, includes the following steps: S1. Determine the shape, size, and parameters of the screw; S2. Select high-strength steel or other metals according to the application of the screw; S3. Provide qualified metal blanks for the cold forging process and ensure the dimensional accuracy of the blanks for subsequent cold forging; S4. Use dies to perform the initial forging of the blanks; S5. Quench the cold-forged screws to increase their hardness; S6. Select surface treatment methods according to requirements, such as galvanizing, chrome plating, or spraying; S7. Perform hardness testing and surface quality inspection.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. As the stirring impeller rotates and rises and falls within the heat treatment furnace, it stirs and mixes the hot gas in the furnace in both horizontal and vertical directions, allowing the hot gas to flow fully. This facilitates the hot gas flow to penetrate every corner of the furnace, resulting in an extremely uniform temperature distribution within the furnace. This improves the consistency of hardness and strength of screws from the same batch after heat treatment, thus ensuring their subsequent processing and production.

[0024] When the temperature inside the furnace is too high and needs to be cooled, cold air is injected into the cooling channel through the air inlet to cool the heat treatment furnace. After cooling to the specified temperature, the valve at the exhaust port at the bottom of the furnace is opened to allow the cold air in the cooling channel to be discharged. 2. When cooling the heat treatment furnace is required, the cold air injected into the cooling channel from the air inlet, driven by the corresponding fan, can quickly fill the entire cooling channel, thereby accelerating the cooling efficiency of the heat treatment furnace. Simultaneously, the fan's movement of the cold air within the cooling channel ensures continuous flow, preventing accumulation in any one area and promoting more even distribution, thus enhancing the cooling effect on the heat treatment furnace. 3. During the rotation and lifting process of the agitator plates, since there are multiple sets of agitator plates, to effectively prevent collisions between them, limit rods and guide rods are used to restrict their movement, ensuring they do not swing erratically. Simultaneously, a second telescopic spring connects the guide rod and the limit rod. During the lifting and lowering process, the deformation of the second telescopic spring drives the guide rod to move up and down along the length of the limit rod, further increasing the frequency of vertical agitation and thus improving the agitation effect on the hot gas inside the furnace. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a structural schematic diagram illustrating the positional relationship of the stirring impeller, cooling channel, drive fan, stirring plate, limiting rod, and guide rod in specific embodiments of this application; Figure 3 This is a structural schematic diagram illustrating the positional relationship between the first and second telescopic springs in an embodiment of this application. Figure 4 yes Figure 3 Enlarged diagram of point A in the middle.

[0026] Reference numerals in the attached drawings: 1. Heat treatment furnace; 2. Stirring impeller; 3. Drive motor; 4. Cooling channel; 5. Air inlet; 6. Exhaust outlet; 7. Rotating shaft; 71. First rod; 72. Second rod; 8. Internal threaded hole; 9. First telescopic spring; 10. Drive fan; 11. Rotating gear; 12. Bevel gear; 13. Stirring plate; 14. Limiting rod; 15. Guide rod; 16. Second telescopic spring. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1 -Appendix Figure 4 This application will be described in further detail below.

[0028] Example: This application discloses a production equipment for corrosion-resistant screws used to fix air conditioner outdoor units, referring to... Figure 1The system includes a heat treatment furnace 1, inside which a horizontally mounted stirring impeller 2 is installed. A drive motor 3 is fastened to the top of the heat treatment furnace 1 by bolts. The drive motor 3 drives the stirring impeller 2 to rotate and move up and down within the heat treatment furnace 1. As the stirring impeller 2 rotates and moves up and down within the heat treatment furnace 1, it thoroughly stirs and mixes the hot air within the furnace 1 in both horizontal and vertical directions. This ensures sufficient flow of the hot air within the furnace, allowing it to penetrate to every corner of the furnace chamber. This results in extremely uniform temperature distribution within the furnace, which helps improve the consistency of hardness and strength of screws from the same batch after treatment in the heat treatment furnace 1, thus ensuring the smooth progress of subsequent processing and production.

[0029] Meanwhile, a cooling channel 4 is provided along the periphery of the heat treatment furnace 1. Two air inlets 5 and two two air outlets 6 are provided at the top and bottom of the heat treatment furnace 1, respectively, and both are connected to the cooling channel 4. When the temperature inside the furnace is too high and cooling is required, cold air is injected into the cooling channel 4 through the air inlet 5 to cool the heat treatment furnace 1. After cooling to the designated temperature, the valve at the exhaust port 6 at the bottom of the furnace is opened to allow the cold air in the cooling channel 4 to be discharged.

[0030] Specifically, a rotating shaft 7 is vertically connected between the drive motor 3 and the stirring impeller 2. The rotating shaft 7 includes a first rod 71 and a second rod 72. The top of the first rod 71 is connected to the drive end of the drive motor 3, and the bottom of the first rod 71 is connected to the second rod 72. An internally threaded hole 8 is formed through the furnace body of the heat treatment furnace 1. The second rod 72 is a screw, and it is vertically inserted into the internally threaded hole 8 on the furnace body. The end of the second rod 72 away from the first rod 71 is connected to the stirring impeller 2.

[0031] Specifically, during stirring, the impeller 2 activates the drive motor 3 to rotate the first rod 71. Simultaneously, the first rod 71 rotates, driving the second rod 72 to rotate as well. As the second rod 72 rotates, it moves vertically up and down within the internal threaded hole 8. This rotation and movement of the second rod 72 within the heat treatment furnace 1 simultaneously drives the impeller 2 to rotate and move up and down, thus ensuring thorough stirring of the hot gas within the furnace and resulting in a more uniform temperature distribution.

[0032] Specifically, a first telescopic spring 9 is vertically installed between the first rod 71 and the second rod 72. One end of the first telescopic spring 9 is connected to the first rod 71, and the other end of the first telescopic spring 9 is connected to the second rod 72. By using the first telescopic spring 9 to connect the first rod 71 and the second rod 72, the second rod 72 can rotate under the drive of the first rod 71 while simultaneously rising and falling vertically.

[0033] Furthermore, two drive fans 10 are installed inside the cooling channel 4 of the heat treatment furnace 1, and the two drive fans 10 are distributed on the left and right sides of the first rod body 71. The two drive fans 10 correspond to the two air inlets 5. When cooling of the heat treatment furnace 1 is required, the cold air injected into the cooling channel 4 from the air inlets 5 is quickly filled by the corresponding drive fans 10, thus accelerating the cooling efficiency of the heat treatment furnace 1. Simultaneously, the drive fans 10 ensure continuous flow of the cold air within the cooling channel 4, preventing it from accumulating in one place and allowing for more even distribution, thereby improving the cooling effect on the heat treatment furnace 1.

[0034] Specifically, a rotating gear 11 is installed on the side of the drive fan 10 near the first rod 71. The rotating gear 11 is vertically arranged and connected to the drive fan 10 via a horizontally arranged shaft. At the same time, a bevel gear 12 is integrally fitted around the periphery of the first rod 71 in the horizontal direction, and the bevel gear 12 meshes with the rotating gears 11 on the left and right sides of the first rod 71.

[0035] When the drive fan 10 rotates, the drive motor 3 drives the first rod 71 to rotate simultaneously, and the bevel gear 12 rotates synchronously with the first rod 71. During rotation, the bevel gear 12 meshes with the two rotating gears 11, thereby synchronously driving the two rotating gears 11 to rotate. While the two rotating gears 11 are rotating, they drive the corresponding drive fan 10 to rotate through their respective shafts, thereby accelerating the flow of cool air within the cooling channel 4.

[0036] Furthermore, multiple sets of agitator plates 13 are added to the side of the impeller 2 away from the second rod 72. These agitator plates 13 correspond one-to-one with the multiple blades of the impeller 2. The agitator plates 13 are horizontally arranged, and the impeller 2 drives these agitator plates 13 to rotate and rise synchronously during rotation and lifting. This further enhances the agitation of the hot gas in the furnace through these agitator plates 13, making the temperature distribution in the furnace more uniform.

[0037] Furthermore, a limit rod 14 is installed vertically at the bottom of the impeller 2, and the limit rod 14 is hollow inside. A guide rod 15 is installed vertically between the limit rod 14 and the agitator plate 13. One end of the guide rod 15 is connected to the agitator plate 13, and the other end of the guide rod 15 extends into the limit rod 14. A second telescopic spring 16 is installed vertically between the guide rod 15 and the inner wall of the limit rod 14.

[0038] During the rotation and lifting process, since the agitator plates 13 are arranged in multiple groups, to effectively prevent collisions between them, the movement of the agitator plates 13 is restricted by the limiting rod 14 and the guide rod 15, preventing them from swaying around randomly. Simultaneously, the guide rod 15 and the limiting rod 14 are connected by a second telescopic spring 16. During the lifting and lowering process, the guide rod 15 is driven to move up and down along the length of the limiting rod 14 by the deformation of the second telescopic spring 16. This further increases the frequency of vertical agitation of the agitator plates 13, thereby improving the agitation effect on the hot gas inside the furnace.

[0039] Furthermore, the agitator plate 13 has an overall wavy structure. This wavy structure significantly increases the surface area of ​​the agitator plate 13, allowing it to come into contact with more fluid during its rotation and lifting. The wavy, uneven surface continuously disturbs the flow lines, resulting in faster and more uniform mixing of hot gas within the furnace, thus further enhancing the agitator plate 13's effect on stirring the hot gas.

[0040] A manufacturing process for corrosion-resistant screws used to secure outdoor units of air conditioners includes the following steps: S1. Determine the shape, size, and parameters of the screw; S2. Select high-strength steel or other metals according to the application of the screw; S3. Provide qualified metal blanks for the cold forging process and ensure the dimensional accuracy of the blanks for subsequent cold forging; S4. Use dies to perform the initial forging of the blanks; S5. Quench the cold-forged screws to increase their hardness; S6. Select surface treatment methods according to requirements, such as galvanizing, chrome plating, or spraying; S7. Perform hardness testing and surface quality inspection.

[0041] The implementation principle of the corrosion-resistant screw production equipment and processing technology for fixing air conditioner outdoor units in this application embodiment is as follows: As the stirring impeller 2 rotates and rises within the heat treatment furnace 1, it stirs and mixes the hot gas in the furnace 1 in both horizontal and vertical directions, allowing the hot gas to flow fully. This facilitates the hot gas flow to penetrate every corner of the furnace, resulting in an extremely uniform temperature distribution within the furnace. This improves the consistency of hardness and strength of screws from the same batch after treatment in the heat treatment furnace 1, thus ensuring their subsequent processing and production.

[0042] When the temperature inside the furnace is too high and needs to be cooled, cold air is injected into the cooling channel 4 through the air inlet 5 to cool the heat treatment furnace 1. After cooling to the specified temperature, the valve at the furnace bottom exhaust port 6 is opened to allow the cold air in the cooling channel 4 to be discharged.

[0043] Specifically, during stirring, the impeller 2 activates the drive motor 3 to rotate the first rod 71. Simultaneously, the first rod 71 rotates, driving the second rod 72 to rotate as well. As the second rod 72 rotates, it moves vertically up and down within the internal threaded hole 8. This rotation and movement of the second rod 72 within the heat treatment furnace 1 simultaneously drives the impeller 2 to rotate and move up and down, thus ensuring thorough stirring of the hot gas within the furnace and resulting in a more uniform temperature distribution.

[0044] When cooling is required for the heat treatment furnace 1, the cold air injected into the cooling channel 4 through the air inlet 5 is quickly filled by the corresponding drive fan 10, thus accelerating the cooling efficiency of the heat treatment furnace 1. Simultaneously, the drive fan 10 ensures continuous flow of the cold air within the cooling channel 4, preventing it from accumulating in one spot and allowing for more even distribution, thereby improving the cooling effect on the heat treatment furnace 1.

[0045] During the rotation and lifting process, since the agitator plates 13 are arranged in multiple groups, to effectively prevent collisions between them, the movement of the agitator plates 13 is restricted by the limiting rod 14 and the guide rod 15, preventing them from swaying around randomly. Simultaneously, the guide rod 15 and the limiting rod 14 are connected by a second telescopic spring 16. During the lifting and lowering process, the guide rod 15 is driven to move up and down along the length of the limiting rod 14 by the deformation of the second telescopic spring 16. This further increases the frequency of vertical agitation of the agitator plates 13, thereby improving the agitation effect on the hot gas inside the furnace.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A production equipment for corrosion-resistant screws used to fix outdoor units of air conditioners, characterized in that: The furnace includes a heat treatment furnace (1), a stirring impeller (2) is installed inside the heat treatment furnace (1), a drive motor (3) is fixedly attached to the top of the heat treatment furnace (1), the drive motor (3) is used to drive the stirring impeller (2) to rotate and move up and down inside the heat treatment furnace (1), a cooling channel (4) is provided inside the heat treatment furnace (1) along its circumferential direction, and an air inlet (5) and an exhaust outlet (6) are respectively provided at the upper and lower ends of the heat treatment furnace (1), and the air inlet (5) and the exhaust outlet (6) are both connected to the cooling channel (4).

2. The equipment for producing corrosion-resistant screws for fixing air conditioner outdoor units according to claim 1, characterized in that: A rotating shaft (7) is provided vertically between the drive motor (3) and the stirring impeller (2). The rotating shaft (7) includes a first rod (71) and a second rod (72). The top of the first rod (71) is connected to the drive end of the drive motor (3), and the bottom of the first rod (71) is connected to the second rod (72). The heat treatment furnace (1) has a through-hole (8). The second rod (72) is a screw. The second rod (72) is inserted vertically into the through-hole (8). The end of the second rod (72) away from the first rod (71) is connected to the stirring impeller (2).

3. The equipment for producing corrosion-resistant screws for fixing air conditioner outdoor units according to claim 2, characterized in that: A first telescopic spring (9) is installed vertically between the first rod (71) and the second rod (72). One end of the first telescopic spring (9) is connected to the first rod (71), and the other end of the first telescopic spring (9) is connected to the second rod (72).

4. The equipment for producing corrosion-resistant screws for fixing air conditioner outdoor units according to claim 3, characterized in that: A drive fan (10) is installed in the cooling channel (4), and the drive fan (10) is located at the air inlet (5).

5. The equipment for producing corrosion-resistant screws for fixing air conditioner outdoor units according to claim 4, characterized in that: A rotating gear (11) is installed on the side of the drive fan (10) near the first rod (71). The rotating gear (11) is vertically arranged and connected to the drive fan (10) by a rotating shaft. A bevel gear (12) is integrally fitted on the periphery of the first rod (71) in the horizontal direction, and the bevel gear (12) and the rotating gear (11) are meshed together.

6. The equipment for producing corrosion-resistant screws for fixing air conditioner outdoor units according to claim 5, characterized in that: Multiple sets of stirring plates (13) are added to the side of the stirring impeller (2) away from the second rod body (72), and the stirring plates (13) are horizontally arranged.

7. The equipment for producing corrosion-resistant screws for fixing air conditioner outdoor units according to claim 6, characterized in that: A limiting rod (14) is installed vertically at the bottom of the stirring impeller (2). The limiting rod (14) is hollow inside. A guide rod (15) is installed vertically between the limiting rod (14) and the stirring plate (13). One end of the guide rod (15) is connected to the stirring plate (13), and the other end of the guide rod (15) extends into the limiting rod (14). A second telescopic spring (16) is installed vertically between the guide rod (15) and the inner wall of the limiting rod (14).

8. The equipment for producing corrosion-resistant screws for fixing air conditioner outdoor units according to claim 7, characterized in that: The stirring plate (13) has an overall wave-like structure.

9. A processing method for corrosion-resistant screws used to fix an air conditioner outdoor unit, characterized in that: The production equipment for corrosion-resistant screws for fixing air conditioner outdoor units according to any one of claims 1-8 includes the following steps: S1. Determine the shape, size, and parameters of the screw; S2. Select high-strength steel or other metals according to the application of the screw; S3. Provide qualified metal blanks for the cold forging process and ensure the dimensional accuracy of the blanks for subsequent cold forging; S4. Use dies to perform the initial forging of the blanks; S5. Quench the cold-forged screws to increase their hardness; S6. Select surface treatment methods according to requirements, such as galvanizing, chrome plating, or spraying; S7. Perform hardness testing and surface quality inspection.

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