Heat treatment device for blade production

Abstract

The invention relates to the field of heat treatment devices, and discloses a heat treatment device for blade production, which comprises a heat treatment furnace, and a rotating rod for sleeving and arranging annular blades is rotatably arranged in the heat treatment furnace; a positioning mechanism is arranged in the rotating rod and is used for limiting the annular blade; a treatment mechanism in transmission with the rotating rod is arranged in the heat treatment furnace, and the treatment mechanism and the rotating rod rotate oppositely and conduct flattening treatment on the annular edge of the annular blade; the treatment mechanism is connected with a spoiler, and the spoiler is used for spoiling gas. By means of the synergistic effect of the turbulent flow pieces, transverse turbulent flow of the swing plates and longitudinal gas conveying of the turbulent flow fan blades, static distribution of gas in the furnace is broken; the driving motor drives the rotating rod and the blade to rotate, dynamic heating and turbulent flow are complementary, uniform heating of the blade is guaranteed in a two-dimensional mode, and thermal stress and deformation are reduced; the processing mechanism can also process the cutting edge by using the V-shaped polishing groove synchronously during heat treatment, so that an independent process is omitted, the period is shortened, the cost is reduced, and secondary processing is prevented from influencing the performance.

Description

Technical Field

[0001] This invention relates to the field of heat treatment apparatus technology, and more specifically, to a heat treatment apparatus for blade production. Background Technology

[0002] Blade heat treatment involves quenching and tempering to harden the cutting edge and toughen the base material inside the blade, allowing a thin strip of steel to cut through steel bars like glass and to withstand impacts like a spring. Without this step, even the most expensive steel is just a piece of scrap iron that will chip and break. Blades are usually heated in a furnace during heat treatment.

[0003] When existing cutting tools are heated, they are usually heated statically or piled up in the furnace. The unevenness of heat radiation and convection leads to differences in hardness and metallographic structure in different locations and even in the same batch of cutting tools. The uneven heating and cooling process will generate thermal stress inside the cutting tool, causing the cutting tool to warp, twist and other deformations, resulting in loss of cutting tool precision. This requires additional expensive straightening processes or even scrapping the tool. Summary of the Invention

[0004] This invention provides a heat treatment apparatus for blade production, which solves the technical problem of uneven heating of blades leading to reduced precision in related technologies.

[0005] The present invention provides a heat treatment apparatus for blade production, including a heat treatment furnace, wherein a rotating rod is rotatably arranged inside the heat treatment furnace for fitting and arranging annular blades. The rotating rod is equipped with a positioning mechanism, which is used to limit the movement of the annular blade. The heat treatment furnace is equipped with a processing mechanism that is driven by a rotating rod. The processing mechanism rotates in the opposite direction to the rotating rod and performs a flattening process on the ring blade. The processing mechanism is equipped with a flow-dispersing element, which turbulent the gas flow to increase the uniformity of heating of the annular blade and scrapes the surface of the rotating rod to facilitate the removal of the annular blade.

[0006] As a further optimization of the present invention, the outer periphery of the rotating rod is rotatably connected to the heat treatment furnace via a turntable, and the heat treatment furnace is equipped with a drive motor that drives the rotating rod to rotate.

[0007] As a further optimization of the present invention, the positioning mechanism includes a top rod, a moving rod, and a stabilizing member. The rotating rod has a channel adapted to the moving rod along its length direction, and the rotating rod has an opening communicating with the channel in the radial direction, and the opening is adapted to the top rod. The moving rod has a pressing groove, and the pressing groove forms an inclined surface inside for lifting the top rod and pressing it against the inner circumference of the annular blade. The position of the moving rod in the length direction is restricted by the stabilizing member.

[0008] As a further optimization of the present invention, the stabilizer includes a mounting frame and positioning bolts. The mounting frame is installed on the heat treatment furnace and the moving rod is positioned by the positioning bolts.

[0009] As a further optimization of the present invention, the processing mechanism includes a transmission disc, a rotating rod, and a grinding disc. The rotating rod is located inside the heat treatment furnace and its position is adjustable relative to the rotating rod. The transmission disc is fitted around the outer periphery of the rotating rod and drives the rotating rod. The grinding disc is fitted around the outer periphery of the rotating rod to process the blade edge of the annular blade.

[0010] As a further optimization of the present invention, the rotating rod is connected to an adjusting rod via a rotating ring. One end of the adjusting rod slides out to the outside of the heat treatment furnace. An installation ring is installed on the heat treatment furnace, and a locking bolt for positioning the adjusting rod is threaded onto the installation ring.

[0011] As a further optimization of the present invention, the turbulence component includes a swing plate, which is installed on the outer periphery of the rotating rod to turbulent the gas and scrape the outer periphery of the rotating rod.

[0012] As a further optimization of the present invention, the diameter of the transmission disc is greater than the diameter of the rotating rod.

[0013] As a further optimization of the present invention, the deflector also includes deflector fan blades, which are mounted on the end of the rotor.

[0014] As a further optimization of the present invention, the adjusting rod is provided with scale lines for indicating the moving distance.

[0015] The beneficial effects of this invention are as follows: 1. The heat treatment device for blade production described in this invention breaks the static distribution of gas in the furnace from different dimensions through the synergistic effect of the baffle. On the one hand, the swing plate installed on the outer periphery of the rotating rod forms a lateral disturbance to the gas in the furnace when it rotates with the rotating rod, avoiding the local accumulation of hot gas. On the other hand, the baffle fan blades at the end of the rotating rod generate longitudinal airflow, which accelerates the mixing and transportation of hot gas in different areas of the furnace, so that the hot gas can quickly and evenly cover every part of the annular blade. Compared with the heating differences caused by the static or accumulated heating of the blade in the prior art, this design can significantly reduce the differences in hardness and metallographic structure of blades in different positions of the same batch, and reduce product quality fluctuations caused by uneven heating.

[0016] 2. The heat treatment device for blade production described in this invention uses a drive motor to drive a rotating rod to rotate stably inside a heat treatment furnace via a turntable. The annular blade fitted on the rotating rod rotates synchronously with the rotating rod, allowing each side of the blade to alternately contact the hot gas inside the furnace. This avoids a single side being in a high-temperature or low-temperature zone for a long time. This dynamic heating method further compensates for the defects of static heating and complements the turbulence effect of the turbulence-inducing components. It ensures uniform heating from both the "gas flow" and "blade movement" dimensions, reduces thermal stress caused by local overheating or overcooling of the blade, and reduces deformation problems such as warping and twisting.

[0017] 3. The heat treatment device for blade production described in this invention has a processing mechanism that rotates in opposite directions with a rotating rod. During the heat treatment process, the blade edge flattening is completed simultaneously. The V-shaped grinding groove on the outer periphery of the grinding disc can precisely fit the blade edge, remove burrs, correct the edge shape, and improve the edge accuracy and sharpness. Compared with the traditional "heat treatment first, then separate edge processing" mode, this integrated design eliminates the additional edge processing step, shortens the production cycle, reduces blade loss during process transfer, reduces equipment investment and labor costs, and avoids the impact of secondary processing on the performance of the heat-treated blade. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a heat treatment device for blade production proposed in this invention.

[0019] Figure 2 This is a schematic diagram of the drive motor in a heat treatment device for blade production proposed in this invention.

[0020] Figure 3 This is a schematic diagram of the internal structure of the heat treatment furnace in a heat treatment device for blade production proposed in this invention.

[0021] Figure 4 This is a side sectional view of the rotating rod in a heat treatment device for blade production proposed in this invention.

[0022] In the picture: 1. Heat treatment furnace; 2. Ring-shaped blade; 3. Rotating rod; 301. Channel; 302. Through-hole; 4. Positioning mechanism; 41. Top rod; 42. Moving rod; 421. Top pressure groove; 43. Mounting frame; 44. Positioning bolt; 5. Processing mechanism; 51. Transmission disc; 52. Rotary rod; 53. Grinding disc; 54. Rotary ring; 55. Adjusting rod; 56. Mounting ring; 57. Locking bolt; 6. Aerodynamic components; 61. Oscillating plate; 62. Aerodynamic fan blades; 7. Turntable; 8. Drive motor. Detailed Implementation

[0023] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0024] like Figures 1 to 4 As shown in the embodiment of the present invention, a heat treatment device for blade production includes a heat treatment furnace 1, and a rotating rod 3 is rotatably arranged inside the heat treatment furnace 1 to sleeve and arrange the annular blades 2. The rotating rod 3 is equipped with a positioning mechanism 4, which is used to limit the position of the annular blade 2. The heat treatment furnace 1 is equipped with a processing mechanism 5 that is driven by the rotating rod 3. The processing mechanism 5 rotates in the opposite direction to the rotating rod 3 and performs flattening treatment on the ring blade 2. The processing mechanism 5 is connected to a baffle 6, which turbulents the gas to increase the uniformity of heating of the annular blade 2 and scrapes the surface of the rotating rod 3 to facilitate the removal of the annular blade 2.

[0025] First, the annular blade 2 is fitted onto the rotating rod 3. The rotating rod 3 can arrange the annular blade 2 at intervals to prevent the annular blade 2 from stacking together during the heat treatment process. Then, the positioning mechanism 4 is activated. The positioning mechanism 4 will limit and fix the annular blade 2 fitted onto the rotating rod 3 to prevent the annular blade 2 from shifting when the rotating rod 3 rotates.

[0026] Subsequently, the heat treatment furnace 1 starts working and heats the internal annular blade 2. At the same time, the processing mechanism 5, which is connected to the rotating rod 3, starts. The processing mechanism 5 and the rotating rod 3 rotate in opposite directions. During the rotation, the processing mechanism 5 can flatten the ring edge of the annular blade 2 and improve the accuracy of the cutting edge of the annular blade 2.

[0027] The baffle 6 connected to the processing mechanism 5 moves along with the processing mechanism 5 as it rotates. The baffle 6 turbulents the gas inside the heat treatment furnace 1, allowing the hot gas inside the furnace to be distributed more evenly around the annular blade 2, thereby increasing the uniformity of heating of the annular blade 2 and avoiding differences in hardness and metallographic structure of the annular blade 2 due to uneven heating. Moreover, the baffle 6 can also scrape the surface of the rotating rod 3 during its movement, preventing impurities from adhering to the surface of the rotating rod 3 and affecting the removal of the annular blade 2. This ensures that the annular blade 2 can be smoothly removed from the rotating rod 3 after heat treatment. The separation and positioning mechanism 4 of the rotating rod 3 limits the stability of the annular blade 2 during the heat treatment process. The opposing rotation and flattening of the processing mechanism 5 improve the cutting edge accuracy of the annular blade 2. The baffle 6 improves the uniformity of heating of the annular blade 2 and reduces deformation caused by thermal stress. The scraping function ensures that the annular blade 2 can be smoothly removed, reducing the cost and scrap rate of subsequent straightening processes.

[0028] The outer periphery of the rotating rod 3 is rotatably connected to the heat treatment furnace 1 via the turntable 7. The heat treatment furnace 1 is equipped with a drive motor 8 that drives the rotating rod 3 to rotate.

[0029] The positioning mechanism 4 includes a top rod 41, a moving rod 42, and a stabilizing component. The rotating rod 3 has a channel 301 adapted to the moving rod 42 along its length. The rotating rod 3 has a through-hole 302 communicating with the channel 301 in the radial direction, and the through-hole 302 is adapted to the top rod 41. The moving rod 42 has a pressing groove 421, and the inside of the pressing groove 421 forms an inclined surface for lifting the top rod 41 and pressing it against the inner circumference of the annular blade 2. The position of the moving rod 42 in the length direction is restricted by the stabilizing component.

[0030] When the positioning mechanism 4 is working, the moving rod 42 first moves within the channel 301 opened along the length direction inside the rotating rod 3. The moving rod 42 has a pressing groove 421. The inclined surface inside the pressing groove 421 will contact the push rod 41. As the moving rod 42 moves within the channel 301, the inclined surface will generate a lifting force on the push rod 41. Since the push rod 41 is adapted to the radial opening 302 of the rotating rod 3, the push rod 41 will move outward along the opening 302 under the action of the lifting force. Finally, the push rod 41 will press against the inner circumference of the annular blade 2 sleeved on the rotating rod 3, thereby limiting the annular blade 2. When the moving rod 42 moves to a suitable position so that the push rod 41 can stably press against the annular blade 2, the stabilizing element will limit the position of the moving rod 42 in the length direction to prevent the moving rod 42 from displacing and causing the push rod 41 to loosen, thus ensuring the stability of the positioning mechanism 4 in limiting the annular blade 2.

[0031] Specifically, the stabilizing components include a mounting frame 43 and positioning bolts 44. The mounting frame 43 is installed on the heat treatment furnace 1 and the moving rod 42 is positioned by the positioning bolts 44.

[0032] The mounting frame 43 provides a mounting base for the positioning bolt 44. The positioning bolt 44 can be used to position the moving rod 42 by a simple tightening operation. The operation is convenient and the positioning is reliable, which further ensures the stability of the positioning mechanism 4 in limiting the ring blade 2 and avoids the heat treatment effect of the ring blade 2 being affected by the displacement of the moving rod 42.

[0033] The processing mechanism 5 includes a transmission disc 51, a rotating rod 52, and a grinding disc 53. The diameter of the transmission disc 51 is larger than the diameter of the rotating rod 3. The rotating rod 52 is located inside the heat treatment furnace 1 and its position is adjustable with that of the rotating rod 3. The transmission disc 51 is fitted around the outer periphery of the rotating rod 52 and is in transmission cooperation with the rotating rod 3. The grinding disc 53 is fitted around the outer periphery of the rotating rod 52 to process the cutting edge of the ring blade 2. A V-shaped grinding groove is formed on the outer periphery of the grinding disc 53 to match the cutting edge.

[0034] Before the processing mechanism 5 starts working, it adjusts the relative positions of the rotating rod 52 and the rotating rod 3 according to the position and size of the ring blade 2, so that the transmission disc 51 on the rotating rod 52 can achieve good transmission cooperation with the rotating rod 3, and at the same time, the grinding disc 53 can be aligned with the cutting edge of the ring blade 2. When the rotating rod 3 rotates under the drive of the drive motor 8, the rotating rod 3 will drive the transmission disc 51 to rotate through the transmission cooperation. Since the transmission disc 51 is fitted on the outer circumference of the rotating rod 52, the rotation of the transmission disc 51 will drive the rotating rod 52 to rotate together. When the rotating rod 52 rotates, the grinding disc 53 fitted on its outer circumference will also rotate. The rotating grinding disc 53 will contact the cutting edge of the ring blade 2, grind the cutting edge to make it smooth, remove burrs and uneven parts on the cutting edge, and improve the accuracy and sharpness of the cutting edge of the ring blade 2.

[0035] Furthermore, the rotating rod 52 is connected to an adjusting rod 55 via a rotating ring 54. One end of the adjusting rod 55 extends slidably to the outside of the heat treatment furnace 1. An mounting ring 56 is installed on the heat treatment furnace 1, and a locking bolt 57 for positioning the adjusting rod 55 is threaded onto the mounting ring 56.

[0036] When adjusting the position of the rotary rod 52 and the rotating rod 3, it is achieved by operating the adjusting rod 55 that extends outside the heat treatment furnace 1. Since the rotary rod 52 is connected to the adjusting rod 55 through the rotating ring 54, pushing or pulling the adjusting rod 55 will cause the rotating ring 54 to move, which in turn will cause the rotary rod 52 to move inside the heat treatment furnace 1, thereby changing the relative position of the rotary rod 52 and the rotating rod 3. When the rotary rod 52 is adjusted to the appropriate position, the locking bolt 57 installed on the mounting ring 56 is rotated. Since the locking bolt 57 is threadedly connected to the mounting ring 56, the locking bolt 57 will move along the mounting ring 56 towards the adjusting rod 55. Finally, the locking bolt 57 will be in close contact with the adjusting rod 55, which will play a positioning role for the adjusting rod 55 and prevent the position of the rotary rod 52 from shifting due to the movement of the adjusting rod 55, thus ensuring that the processing mechanism 5 can stably process the annular blade 2.

[0037] The turbulence-disrupting component 6 includes a swing plate 61, which is installed on the outer periphery of the rotating rod 52 to turbulent the gas and scrape the outer periphery of the rotating rod 3.

[0038] The oscillating plate 61 in the turbulence-disrupting component 6 is installed on the outer periphery of the rotating rod 52. When the rotating rod 52 rotates under the drive of the transmission disc 51, the rotating rod 52 will drive the oscillating plate 61 to rotate together. During the rotation of the oscillating plate 61, it will interact with the gas inside the heat treatment furnace 1, causing disturbance to the gas and breaking the stable flow state of the gas, so that the hot gas in the furnace can be more evenly diffused to all parts of the annular blade 2, thereby improving the uniformity of heating of the annular blade 2. At the same time, as the oscillating plate 61 rotates, when the oscillating plate 61 rotates to a position close to the rotating rod 3, the oscillating plate 61 will contact the outer periphery of the rotating rod 3, scraping the outer periphery surface of the rotating rod 3 to remove impurities, oxide scale and other substances that may be attached to the surface of the rotating rod 3, so as to avoid these substances affecting the contact between the annular blade 2 and the rotating rod 3, and ensuring that the annular blade 2 can be smoothly removed from the rotating rod 3 after heat treatment.

[0039] Furthermore, the spoiler 6 also includes a spoiler fan blade 62, which is mounted on the end of the rotor 52.

[0040] In addition to the swing plate 61, the baffle 6 also has a baffle fan 62 installed at the end of the rotating rod 52. When the rotating rod 52 rotates, it will not only drive the swing plate 61 to rotate, but also drive the baffle fan 62 at the end to rotate together. The baffle fan 62 will generate airflow disturbance during rotation, which can more fully mix and transport the hot gas in different areas inside the heat treatment furnace 1. The airflow generated by the baffle fan 62 can reach the annular blade 2 more quickly. In combination with the baffle effect of the swing plate 61, it will further enhance the flow and mixing of the gas in the furnace, so that all parts of the annular blade 2 can be in contact with the hot gas more evenly, thereby further improving the uniformity of heating of the annular blade 2 and avoiding problems such as deformation and hardness difference of the annular blade 2 due to uneven local heating.

[0041] The adjusting rod 55 has scale lines for indicating the moving distance.

[0042] A scale line is provided on the adjusting rod 55 to indicate the moving distance. When the operator needs to adjust the relative position of the rotating rod 52 and the rotating rod 3, the moving distance of the adjusting rod 55 can be accurately understood by observing the scale line on the adjusting rod 55.

[0043] The embodiments of the present invention have been described above, but the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments described above, all of which are within the protection scope of the embodiments described above.

Claims

1. A heat treatment apparatus for blade production, comprising a heat treatment furnace (1), characterized in that: The heat treatment furnace (1) is internally rotatably provided with a rotating rod (3) sleeving and arranging the annular blade (2); The rotating rod (3) is internally provided with a positioning mechanism (4), and the positioning mechanism (4) is used for limiting the annular blade (2); The heat treatment furnace (1) is internally provided with a treatment mechanism (5) driven by the rotating rod (3), the treatment mechanism (5) rotates towards the rotating rod (3), and the annular blade (2) is subjected to flattening treatment. The treatment mechanism (5) is connected with a flow disturbing piece (6), and the flow disturbing piece (6) disturbs the gas flow to increase the uniformity of the annular blade (2) heated, and scrapes the surface of the rotating rod (3) to facilitate the annular blade (2) to move out.

2. The heat treatment device for blade production according to claim 1, characterized by: The outer periphery of the rotating rod (3) is rotatably connected with the heat treatment furnace (1) through a rotating disc (7), and the heat treatment furnace (1) is provided with a driving motor (8) for driving the rotating rod (3) to rotate.

3. The heat treatment apparatus for blade production according to claim 2, characterized by: The positioning mechanism (4) comprises a jacking rod (41), a moving rod (42) and a stabilizing piece, the rotating rod (3) is internally provided with a channel (301) adapted to the moving rod (42) along the length direction, the rotating rod (3) is radially provided with a through hole (302) in communication with the channel (301), and the through hole (302) is adapted to the jacking rod (41), the moving rod (42) is provided with a jacking groove (421) therein, and an inclined surface is formed in the jacking groove (421) for jacking the jacking rod (41) to press against the inner periphery of the annular blade (2), and the position of the moving rod (42) in the length direction is limited by the stabilizing piece.

4. The heat treatment apparatus for blade production according to claim 3, characterized by: The stabilizing piece comprises a mounting frame (43) and a positioning bolt (44), the mounting frame (43) is mounted on the heat treatment furnace (1) and positions the moving rod (42) through the positioning bolt (44).

5. The heat treatment apparatus for blade production according to claim 1, characterized by: The treatment mechanism (5) comprises a transmission disc (51), a rotating rod (52) and a grinding disc (53), the rotating rod (52) is located in the interior of the heat treatment furnace (1) and is adjustably arranged with the rotating rod (3), the transmission disc (51) is sleeved on the outer periphery of the rotating rod (52) and is in transmission cooperation with the rotating rod (3), and the grinding disc (53) is sleeved on the outer periphery of the rotating rod (52) to process the blade of the annular blade (2).

6. The heat treatment apparatus for blade production according to claim 5, characterized by: The rotating rod (52) is connected with an adjusting rod (55) through a rotating ring (54), one end of the adjusting rod (55) slides out to the outside of the heat treatment furnace (1), the heat treatment furnace (1) is provided with a mounting ring (56), and the mounting ring (56) is threadedly sleeved with a locking bolt (57) for positioning the adjusting rod (55).

7. The heat treatment apparatus for blade production according to claim 6, characterized by: The flow disturbing piece (6) comprises an oscillating plate (61) mounted on the outer periphery of the rotating rod (52) to disturb the gas flow and scrape the outer periphery of the rotating rod (3).

8. The heat treatment apparatus for blade production according to claim 5, characterized by: The diameter of the transmission disc (51) is greater than the diameter of the rotating rod (3).

9. The heat treatment apparatus for blade production according to claim 7, characterized by: The flow disturbing piece (6) further comprises a flow disturbing fan blade (62) mounted on the end of the rotating rod (52).

10. The heat treatment apparatus for blade production according to claim 6, characterized by: The adjusting rod (55) is provided with a scale line for indicating the moving distance.

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