Special steel bar heat treatment device

Abstract

The invention belongs to the technical field of bar heat treatment, and particularly discloses a special steel bar heat treatment device which comprises a shell structure and an electromagnetic heater connected to the inner wall of the shell structure, a plurality of end-to-end supporting plates penetrate through the interior of the shell structure, and the end-to-end supporting plates form an annular structure; a mounting shell is fixed to the inner wall of the supporting plate, a scraper is connected to the mounting shell in an inserted mode, a mounting spring is fixed between the scraper and the inner wall of the mounting shell, a transmission column and a transmission structure driving the transmission column to rotate are rotationally arranged on the supporting plate, and shifting structures are fixed to the outer wall of the transmission column at equal intervals. The multiple supporting plates in the device can form an annular conveying structure, a worker can place the austenitic stainless steel rod-shaped material needing to be heated on the supporting plates, and then the rod-shaped material is conveyed through the annular conveying structure formed by the supporting plates; the electromagnetic heater in the shell structure can heat the austenitic stainless steel rod-like material, and the heating efficiency of the rod-like material is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of bar heat treatment, and particularly discloses a special steel bar heat treatment device. BACKGROUND

[0002] Austenitic stainless steel is a common special steel material, which has strong corrosion resistance. When the austenitic stainless steel workpiece is made, the bar needs to be frequently sent to the inside of a heating furnace for heat treatment. At present, the heating furnace suitable for austenitic stainless steel heat treatment on the market usually comprises a furnace body and a conveying structure. In actual use, the staff needs to place the bar on the conveying structure, and the conveying structure drives the bar to convey in the inside of the furnace body to realize the heating of the furnace body on the bar. According to the characteristics of austenitic stainless steel, after heating, the surface of the bar will appear oxide skin, which will seriously affect the heating of the furnace body on the bar. Therefore, before each heating, the oxide skin on the bar needs to be removed to ensure that the workpiece made of austenitic stainless steel meets the corrosion resistance performance. The above heating furnace can indeed achieve good heating effect on the bar in actual use, but it does not have a good oxide skin removing structure. Therefore, the staff needs to frequently place the bar in the oxide skin removing structure before each heating, which not only affects the heating efficiency of the bar, but also causes more heat dissipation on the bar. In addition, the manual intervention also has more risks, thereby causing more inconvenience when the austenitic stainless steel bar is heated. SUMMARY

[0003] Therefore, the purpose of the present application is to provide a special steel bar heat treatment device to solve the above problems.

[0004] To achieve the above purpose, the present application provides a special steel bar heat treatment device, which comprises a shell structure and an electromagnetic heater connected to the inner wall of the shell structure. The inside of the shell structure penetrates a plurality of first-end-to-last-end support plates, which form a ring structure. The inner wall of the support plate is fixed with a mounting shell. The mounting shell is inserted with a scraper. The scraper and the inner wall of the mounting shell are fixed with a mounting spring. The support plate is provided with a transmission column and a transmission structure for driving the transmission column to rotate. The outer wall of the transmission column is fixed with a poking structure at equal intervals. The support plate is provided with a bar piece between the scraper and the transmission column. In use, the scraper abuts against the bar piece, and the transmission column drives the bar piece to rotate on the support plate through the poking structure, so as to realize the scraping of the scraper on the bar piece.

[0005] In the above technical solution, the electromagnetic heater is further fitted onto the support plate, and a dust-collecting structure is fixed to the inner wall of the shell structure and the part opposite to the electromagnetic heater, with the working end of the dust-collecting structure opposite to the support plate.

[0006] In the above technical solution, a support seat is fixedly fixed on the support plate, the support seat abuts against the bar material, the support plate has a U-shaped structure, a second lug is fixed on one side of the support plate, a first lug is fixed on the end of the support plate, an installation rod is inserted into the first lug, and the second lug is sleeved on the installation rod.

[0007] In the above technical solution, the actuating structure further includes a mounting base fixed on the transmission column, an abutment block inserted into the mounting base, a connecting spring fixed between the abutment block and the inner wall of the mounting base, and a rounded corner provided at the end of the abutment block away from the mounting base.

[0008] In the above technical solution, the transmission structure further includes round rods fixed at both ends of the transmission column, and the round rods at both ends of the transmission column pass through the support plate, with a transmission gear fixed to one of the round rods passing through the support plate.

[0009] In the above technical solution, the discharge end of the shell structure is further provided with a rack, which meshes with the transmission gear and does not contact the support plate.

[0010] In the above technical solution, furthermore, supports are distributed on both sides of the end of the shell structure, and transport gears rotate on the supports, with the transport gears abutting against the support plate.

[0011] In the above technical solution, the transmission teeth of the transport gear abut against the support plate, and a transmission motor is fixed on one of the transport gears, with the transmission end of the transmission motor fixed to the transport gear.

[0012] In the above technical solution, the scraper is further inserted into the mounting shell at an angle, and a sealing ring is embedded in one end of the mounting shell where the scraper is inserted, and the sealing ring and the scraper are slidably sleeved together.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The multiple support plates in this device can form a ring-shaped conveying structure. Workers can place the austenitic stainless steel rods that need to be heated on the support plates, thereby realizing the transport of the rods by the ring-shaped conveying structure formed by the support plates. This enables the electromagnetic heater inside the shell structure to heat the austenitic stainless steel rods, improving the heating efficiency of the rods.

[0014] 2. When the support plate in the device transports the heated bar stock, the transmission gear on the support plate will roll on the rack, thereby enabling the transmission gear to drive the abutment block on the transmission column to squeeze the oxide scale on the bar stock. At the same time, the bar stock will rotate on the support plate, so that the scraper can scrape off the oxide scale that has not fallen off the bar stock.

[0015] 3. The multiple support plates connected end to end in the device can form a ring-shaped conveying structure, which can realize the continuous conveying of the bar material by the support plates. When the support plates convey the bar material, the output shaft of the drive motor can drive the transport gear to rotate, thereby realizing the drive teeth on the transport gear to move the support plate, realizing the transport gear to convey multiple support plates connected end to end, and thus making the support plates smoothly drive the bar material to be heated by the electromagnetic heater. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a through-hole diagram of the support plate and shell structure in this invention; Figure 3 This is a diagram showing the connection structure between the rack and the transmission gear in this invention; Figure 4 This is a diagram showing the contact structure between the scraper and the bar in this invention. Figure 5 for Figure 4 Axial side schematic diagram; Figure 6 This is a schematic diagram showing the distribution of the transmission column and scraper in this invention; Figure 7 This is a through-hole diagram of the scraper and the mounting shell in this invention; Figure 8 This is a schematic diagram of the insertion of the abutment block and the mounting base in this invention.

[0017] 1. Shell structure; 2. Electromagnetic heater; 3. Scraper; 4. Transmission column; 41. Abutment block; 42. Transmission gear; 43. Mounting base; 44. Connecting spring; 5. Support plate; 51. Support base; 52. First lug; 53. Second lug; 54. Mounting shell; 55. Mounting spring; 6. Bar material; 7. Rack; 8. Mounting rod; 9. Dust collection structure; 10. Transmission motor; 101. Bracket; 102. Transport gear. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0020] Example 1: Please refer to Figures 1-8 As shown, the present invention provides a technical solution: This invention is a heat treatment device for special steel bars, including a shell structure 1 and an electromagnetic heater 2 connected to the inner wall of the shell structure 1. Multiple support plates 5 connected end to end pass through the interior of the shell structure 1. The multiple support plates 5 connected end to end form a ring structure, which can realize the uninterrupted transport of austenitic stainless steel bar material by the support plates 5. An installation shell 54 is fixed to the inner wall of the support plate 5. A scraper 3 is inserted into the installation shell 54. An installation spring 55 is fixed between the scraper 3 and the inner wall of the installation shell 54. In actual use, multiple support plates 5 connected end to end can form a ring-shaped conveying structure. The staff can place the austenitic stainless steel rod material that needs to be heated on the support plate 5, thereby realizing the ring-shaped conveying structure formed by the support plate 5 to transport the rod material, and realize the electromagnetic heater 2 inside the shell structure 1 to heat the austenitic stainless steel rod material. The support plate 5 has a rotating transmission column 4 and a transmission structure that drives the transmission column 4 to rotate. The outer wall of the transmission column 4 is fixed with a lever structure at equal intervals. A bar piece 6 is placed on the support plate 5 between the scraper 3 and the transmission column 4. The bar piece 6 is an austenitic stainless steel bar. In use, the scraper 3 abuts against the bar stock 6, and the transmission column 4 drives the bar stock 6 to rotate on the support plate 5 through the actuation structure, so that the scraper 3 scrapes the bar stock 6, thereby automatically cleaning the oxide scale on the bar stock 6.

[0021] The electromagnetic heater 2 is sleeved on the support plate 5. The inner wall of the shell structure 1 and the part opposite to the electromagnetic heater 2 are fixed with a dust collection structure 9. The working end of the dust collection structure 9 is opposite to the support plate 5. In practical use, the electromagnetic heater 2 can be selected as a high-frequency electromagnetic heater that is available on the market. In this document, it is used to heat the bar stock 6. When the bar stock 6 is heated, oxide scale will appear on the bar stock 6. During the rotation of the transmission column 4, the bar stock 6 can be driven to rotate on the support plate 5 through the toggle structure, so that the scraper 3 scrapes the bar stock 6, thereby automatically cleaning the oxide scale on the bar stock 6, which facilitates the subsequent processing of the bar stock 6 after the oxide scale is removed. It should be noted that the staff can set up multiple furnace body structures according to the heating requirements of austenitic stainless steel rod materials. The shell structure 1 and electromagnetic heater 2 shown in this document are part of the furnace body structure. In order to facilitate the understanding of the operating principle of the device, only one furnace body structure is shown in the attached drawings of this manual. When the staff needs to set up multiple furnace structures, multiple support plates 5 connected end to end form a ring-shaped conveying structure, which needs to pass through multiple furnace structures at the same time, so that the support plates 5 can drive the bar stock 6 to be heated in multiple furnaces in sequence.

[0022] Example 2: Please refer to Figures 1-8 As shown, based on Embodiment 1, the present invention provides a technical solution. Unlike Embodiment 1, in this embodiment, when the support plate 5 transports the heated bar stock 6, the transmission gear 42 on the support plate 5 will roll on the rack 7, thereby enabling the transmission gear 42 to drive the abutment block 41 on the transmission column 4 to squeeze the oxide scale on the bar stock 6. At the same time, the bar stock 6 will rotate on the support plate 5, so that the scraper 3 can scrape off the oxide scale that has not fallen off the bar stock 6.

[0023] A support base 51 is fixed on the support plate 5. The support base 51 abuts against the bar stock 6. The support plate 5 has a U-shaped structure. A second ear block 53 is fixed on one side of the support plate 5. A first ear block 52 is fixed at the end of the support plate 5. An installation rod 8 is inserted into the first ear block 52. The second ear block 53 is sleeved on the installation rod 8. During the assembly process, the worker inserts an installation rod 8 into the first ear block 52, and the second ear block 53 on the adjacent support plate 5 is sleeved on the installation rod 8. This allows the two adjacent support plates 5 to be connected end to end, thereby forming a ring-shaped conveying structure with multiple support plates 5, enabling the continuous transport of the bar material 6 by multiple support plates 5.

[0024] The actuating structure includes a mounting base 43 fixed on the transmission column 4, an abutment block 41 inserted into the mounting base 43, a connecting spring 44 fixed between the abutment block 41 and the inner wall of the mounting base 43, and a rounded corner provided at the end of the abutment block 41 away from the mounting base 43.

[0025] The transmission structure includes round rods fixed at both ends of the transmission column 4. The round rods at both ends of the transmission column 4 pass through the support plate 5, and a transmission gear 42 is fixed to one of the round rods that passes through the support plate 5.

[0026] A rack 7 is fixed at the discharge end of the shell structure 1. The rack 7 meshes with the transmission gear 42, and the rack 7 does not contact the support plate 5. When the device transports the bar stock 6, the rack 7 is fixed to the discharge end of the shell structure 1. When the support plate 5 transports the heated bar stock 6, the transmission gear 42 on the support plate 5 will roll on the rack 7, thereby enabling the rack 7 to drive the abutment block 41 on the transmission column 4 to squeeze the oxide scale on the bar stock 6 through the transmission gear 42. When the abutment block 41 squeezes the heated bar stock 6, the bar stock 6 will rotate on the support plate 5, thereby enabling the abutment block 41 to squeeze the oxide scale at different positions on the bar stock 6. The oxide scale squeezed by the abutment block 41 will be loosely distributed on the bar stock 6, and some oxide scale will fall off directly. Since the bar stock 6 will rotate on the support plate 5 when the abutment block 41 squeezes the heated bar stock 6, the scraper 3 can scrape the oxide scale that has not fallen off the bar stock 6, so that the oxide scale that has not fallen off the bar stock 6 can be cleaned by the device. When the bar stock 6 is cleaned of oxide scale by the device, the operator can place an oxide scale collection structure below the rack 7, so that the oxide scale removed by the scraper 3 can fall into the oxide scale collection structure. When the annular conveying structure composed of multiple support plates 5 drives the bar stock 6 to pass through multiple furnace body structures in sequence, the operator can add a cooling structure for the bar stock 6 between two adjacent furnace body structures. This allows the cooled bar stock 6 to continue to be conveyed to the next furnace body structure through the support plates 5.

[0027] Example 3: Please refer to Figures 1-8 As shown, based on Embodiment 1, the present invention provides a technical solution. Unlike Embodiment 1, in this embodiment, multiple support plates 5 connected end to end can form a ring-shaped conveying structure. This enables the support plates 5 to continuously convey the bar material 6. When the support plates 5 convey the bar material 6, the output shaft of the transmission motor 10 can drive the transport gear 102 to rotate, thereby enabling the transmission teeth on the transport gear 102 to move the support plates 5. This allows the transport gear 102 to convey multiple support plates 5 connected end to end, thereby enabling the support plates 5 to smoothly drive the bar material 6 to be heated by the electromagnetic heater 2.

[0028] Supports 101 are distributed on both sides of the end of the shell structure 1. A transport gear 102 rotates on the support 101 and abuts against the support plate 5.

[0029] The transmission teeth of the transport gear 102 abut against the support plate 5. A transmission motor 10 is fixed on one of the transport gears 102, and the transmission end of the transmission motor 10 is fixed to the transport gear 102.

[0030] The scraper 3 is inserted into the mounting housing 54 at an angle. A sealing ring is embedded in one end of the mounting housing 54 where the scraper 3 is inserted. The sealing ring and the scraper 3 are slidably connected. Since multiple support plates 5 connected end to end can form a ring-shaped conveying structure, the support plates 5 can continuously convey the bar material 6. When the support plates 5 convey the bar material 6, the output shaft of the drive motor 10 can drive the transport gear 102 to rotate, thereby enabling the transmission teeth on the transport gear 102 to move the support plates 5, so that the transport gear 102 can convey multiple support plates 5 connected end to end, thereby enabling the support plates 5 to smoothly drive the bar material 6 to be heated by the electromagnetic heater 2. It should be noted that the transmission teeth on the transport gear 102 shown in this document are the gear teeth on the transport gear 102, which are within the scope of knowledge of those skilled in the art; Working principle: In actual use, multiple support plates 5 connected end to end can form a ring-shaped conveying structure. The staff can place the austenitic stainless steel rod material that needs to be heated on the support plate 5, thereby realizing the ring-shaped conveying structure formed by the support plate 5 to transport the rod material, and realize the electromagnetic heater 2 inside the shell structure 1 to heat the austenitic stainless steel rod material. In practical use, the electromagnetic heater 2 can be selected as a high-frequency electromagnetic heater that is available on the market. In this document, it is used to heat the bar stock 6. When the bar stock 6 is heated, oxide scale will appear on the bar stock 6. During the rotation of the transmission column 4, the bar stock 6 can be driven to rotate on the support plate 5 through the toggle structure, so that the scraper 3 scrapes the bar stock 6, thereby automatically cleaning the oxide scale on the bar stock 6, which facilitates the subsequent processing of the bar stock 6 after the oxide scale is removed. It should be noted that the staff can set up multiple furnace body structures according to the heating requirements of austenitic stainless steel rod materials. The shell structure 1 and electromagnetic heater 2 shown in this document are part of the furnace body structure. In order to facilitate the understanding of the operating principle of the device, only one furnace body structure is shown in the attached drawings of this manual. When the staff needs to set up multiple furnace structures, multiple support plates 5 connected end to end form a ring-shaped conveying structure, which needs to pass through multiple furnace structures at the same time, so that the support plates 5 can drive the bar stock 6 to be heated in multiple furnaces in sequence. During the assembly process, the workers insert an installation rod 8 into the first ear block 52, and the second ear block 53 on the adjacent support plate 5 is sleeved on the installation rod 8. This enables the two adjacent support plates 5 to be connected end to end, thereby enabling multiple support plates 5 to form a ring-shaped conveying structure and realize the uninterrupted transport of the bar material 6 by multiple support plates 5. When the device transports the bar stock 6, the rack 7 is fixed to the discharge end of the shell structure 1. When the support plate 5 transports the heated bar stock 6, the transmission gear 42 on the support plate 5 will roll on the rack 7, thereby enabling the rack 7 to drive the abutment block 41 on the transmission column 4 to squeeze the oxide scale on the bar stock 6 through the transmission gear 42. When the abutment block 41 squeezes the heated bar stock 6, the bar stock 6 will rotate on the support plate 5, thereby enabling the abutment block 41 to squeeze the oxide scale at different positions on the bar stock 6. The oxide scale squeezed by the abutment block 41 will be loosely distributed on the bar stock 6, and some oxide scale will fall off directly. Since the bar stock 6 will rotate on the support plate 5 when the abutment block 41 squeezes the heated bar stock 6, the scraper 3 can scrape the oxide scale that has not fallen off the bar stock 6, so that the oxide scale that has not fallen off the bar stock 6 can be cleaned by the device. When the bar stock 6 is cleaned of oxide scale by the device, the operator can place an oxide scale collection structure below the rack 7, so that the oxide scale removed by the scraper 3 can fall into the oxide scale collection structure. When the annular conveying structure composed of multiple support plates 5 drives the bar stock 6 to pass through multiple furnace body structures in sequence, the staff can add a cooling structure for the bar stock 6 between two adjacent furnace body structures. This allows the cooled bar stock 6 to continue to be conveyed to the next furnace body structure through the support plates 5. Since multiple support plates 5 connected end to end can form a ring-shaped conveying structure, the support plates 5 can continuously convey the bar material 6. When the support plates 5 convey the bar material 6, the output shaft of the drive motor 10 can drive the transport gear 102 to rotate, thereby enabling the transmission teeth on the transport gear 102 to move the support plates 5, so that the transport gear 102 can convey multiple support plates 5 connected end to end, thereby making the support plates 5 smoothly drive the bar material 6 to be heated by the electromagnetic heater 2.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A heat treatment apparatus for special steel bars, comprising a shell structure (1) and an electromagnetic heater (2) connected to the inner wall of the shell structure (1), characterized in that: The shell structure (1) has multiple support plates (5) connected end to end through it. The multiple support plates (5) connected end to end form a ring structure. The inner wall of the support plate (5) is fixed with a mounting shell (54). A scraper (3) is inserted into the mounting shell (54). A mounting spring (55) is fixed between the scraper (3) and the inner wall of the mounting shell (54). The support plate (5) has a rotating transmission column (4) and a transmission structure that drives the transmission column (4) to rotate. The outer wall of the transmission column (4) is fixed with a prying structure at equal intervals. A bar piece (6) is placed on the support plate (5) between the scraper (3) and the transmission column (4). When in use, the scraper (3) abuts against the bar (6), and the transmission column (4) drives the bar (6) to rotate on the support plate (5) through the actuation structure, so that the scraper (3) scrapes the bar (6).

2. The heat treatment apparatus for special steel bars according to claim 1, characterized in that, The electromagnetic heater (2) is sleeved on the support plate (5). A dust-collecting structure (9) is fixed on the inner wall of the shell structure (1) and the part opposite to the electromagnetic heater (2). The working end of the dust-collecting structure (9) is opposite to the support plate (5).

3. The heat treatment apparatus for special steel bars according to claim 1, characterized in that, A support base (51) is fixed on the support plate (5), the support base (51) abuts against the bar stock (6), the support plate (5) has a U-shaped structure, a second ear block (53) is fixed on one side of the support plate (5), a first ear block (52) is fixed at the end of the support plate (5), an installation rod (8) is inserted into the first ear block (52), and the second ear block (53) is sleeved on the installation rod (8).

4. The heat treatment apparatus for special steel bars according to claim 1, characterized in that, The actuating structure includes a mounting base (43) fixed on the transmission column (4), an abutment block (41) inserted into the mounting base (43), a connecting spring (44) fixed between the abutment block (41) and the inner wall of the mounting base (43), and a rounded corner provided at the end of the abutment block (41) away from the mounting base (43).

5. The heat treatment apparatus for special steel bars according to claim 1, characterized in that, The transmission structure includes round rods fixed at both ends of the transmission column (4). The round rods at both ends of the transmission column (4) pass through the support plate (5), and a transmission gear (42) is fixed to one of the round rods passing through the support plate (5).

6. The heat treatment apparatus for special steel bars according to claim 5, characterized in that, The discharge end of the shell structure (1) is fixed with a rack (7), which meshes with the transmission gear (42) and does not contact the support plate (5).

7. The heat treatment apparatus for special steel bars according to claim 1, characterized in that, The shell structure (1) has brackets (101) distributed on both sides of its end. A transport gear (102) rotates on the bracket (101) and abuts against the support plate (5).

8. A heat treatment apparatus for special steel bars according to claim 7, characterized in that, The transmission teeth of the transport gear (102) abut against the support plate (5), and a transmission motor (10) is fixed on one of the transport gears (102), with the transmission end of the transmission motor (10) fixed to the transport gear (102).

9. A heat treatment apparatus for special steel bars according to claim 1, characterized in that, The scraper (3) is inserted at an angle into the mounting shell (54). A sealing ring is embedded in one end of the mounting shell (54) into which the scraper (3) is inserted. The sealing ring and the scraper (3) are slidably connected.

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