Gear ring eddy current heating device

Abstract

The utility model relates to a gear ring eddy current heating device which comprises a rotating disc and a heating assembly, a gear ring tool used for positioning a gear ring is arranged on the rotating disc, a gear shaft tool is further arranged on the rotating disc, the gear shaft tool is used for positioning a gear shaft matched with the gear ring, and the heating assembly is arranged on the rotating disc. A gear shaft tool is arranged on the side of each gear ring tool in a paired mode. The heating assembly comprises an iron core, the heating assembly is arranged above one side of the rotating disc, and when the gear ring tool rotates to a heating station below the heating assembly along with the rotating disc, the iron core and the gear ring form a closed magnetic loop; according to the device, the gear ring tool and the gear shaft tool are arranged on the rotating disc at the same time, so that the gear ring and the gear shaft can be synchronously fed, after the gear ring tool rotates to the heating station along with the rotating disc, an iron core of the heating assembly and the gear ring form a closed magnetic loop, the gear ring is heated, the rotating disc continues to rotate after heating is completed, and the gear ring and the gear shaft are synchronously conveyed to the discharging station; matching errors in the conveying process are avoided, and the feeding efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of metal heat treatment equipment, specifically to a gear ring eddy current heating device. Background Technology

[0002] Heat treatment of gear rings (gear discs) can improve their mechanical properties and durability in multiple dimensions, and is a key process to ensure their long-term reliable operation. Existing technologies already include equipment for heat treatment of gear rings. For example, Chinese invention patent CN112760476A discloses a gear quenching device for metal heat treatment, whose structure includes: a base plate with a motor mounted on one side of the top of the base plate; a heating mechanism mounted on one side of the top of the base plate; and a quenching mechanism mounted on the other side of the top of the base plate. This patent, through the cooperation between the set rotation mechanism and the rotating mechanism, can automatically operate the heating mechanism and the quenching mechanism without manual operation, further saving manpower.

[0003] In actual production, since the workpieces that customers need to process are complete sets of components, that is, a gear ring and a matching gear shaft constitute a set of workpieces, in order to facilitate loading and avoid matching errors during the loading process, a set of workpieces needs to be loaded at the same time, and only the gear ring is heated while the gear shaft is not heated. Therefore, the structure of the aforementioned patent, which only has a gear ring loading and heating device, is not applicable to this production situation. In order to meet the requirement of loading the gear ring and gear shaft at the same time and heating the gear ring, the applicant has designed a gear ring heating device. Summary of the Invention

[0004] The purpose of this invention is to develop a gear ring eddy current heating device to solve the problem that the gear ring and gear shaft cannot be fed at the same time in the existing gear ring heating device, so as to realize the simultaneous feeding of a set of workpieces (gear ring and gear shaft), avoid matching errors during the feeding process, and improve feeding efficiency.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model provides a gear ring eddy current heating device, including a turntable and a heating assembly. The turntable is provided with a gear ring fixture for positioning the gear ring, and the turntable is also provided with a gear shaft fixture for positioning a gear shaft adapted to the gear ring. Each gear ring fixture is paired with a gear shaft fixture on its side. The heating assembly includes an iron core and is located above one side of the turntable. When the gear ring fixture rotates with the turntable to the heating position below the heating assembly, the iron core and the gear ring on the gear ring fixture form a closed magnetic circuit.

[0007] The beneficial effects of the above technical solution are as follows: while setting the gear ring fixture on the turntable, a gear shaft fixture for positioning (compatible with the gear ring) is also set, so that the gear ring and gear shaft can be loaded synchronously and rotate synchronously with the turntable for unloading; after the paired gear ring and gear shaft are loaded to the gear ring fixture and gear shaft fixture, the gear ring fixture rotates with the turntable to the heating station below the heating component. The iron core of the heating component and the gear ring form a closed magnetic circuit, the gear ring is heated, and the gear shaft is located on the gear shaft fixture to the side of the gear ring fixture and is not heated; after heating is completed, the gear ring fixture and gear shaft fixture continue to rotate with the turntable, and the heated gear ring and its matching gear shaft are synchronously sent to the unloading station.

[0008] In one possible implementation, a gear ring fixture and a gear shaft fixture constitute a set of positioning fixture assemblies. At least three sets of the positioning fixture assemblies are provided on the turntable. When the gear ring fixture in one set of positioning fixture assemblies is located at the heating station, the other two sets of positioning fixture assemblies are located at the loading station and the unloading station, respectively. Among the three sets of positioning fixture assemblies on the turntable, when one set of positioning fixture assemblies is located at the heating station, the other two sets of positioning fixture assemblies are located at the loading and unloading stations, respectively. This allows for simultaneous heating of the gear ring and loading and unloading, maximizing production efficiency.

[0009] In one possible implementation, several positioning fixtures are arranged in a ring on the surface of the turntable, and the gear ring fixture and the gear shaft fixture are spaced apart. The arrangement of the positioning fixtures in a ring on the surface of the turntable is beneficial for maximizing space utilization.

[0010] In one possible implementation, the turntable is driven to rotate by an indexing table, and a sensor block is provided around the outer circumference of the turntable. The sensor block is used to determine the rotational position of the turntable, such as whether it has just rotated to a specific work position.

[0011] In one possible implementation, the gear ring eddy current heating device further includes a frame, and the indexing table is connected to the frame via an adjustment assembly. The adjustment assembly includes an indexing table adjustment plate, a first adjustment block connected to the indexing table adjustment plate via an oblong hole, and a second adjustment block mounted on the frame. The first adjustment block is also provided with a plurality of first adjustment holes for engaging with bolts, and the first adjustment block is detachably connected to the second adjustment block via bolts. The indexing table adjustment plate engages with the first adjustment block via the oblong hole, making the position of the first adjustment block relative to the indexing table adjustment plate adjustable. The first adjustment block is provided with a plurality of first adjustment holes to facilitate the selection of a suitable first adjustment hole for connection with the second adjustment block. The first adjustment hole can be located on the side of the first adjustment block, or above or below the side of the first adjustment block, as long as the opening position is adapted to the connection position of the second adjustment block.

[0012] In one possible implementation, the turntable is provided with a limiting support for radially limiting the gear ring fixture. A lifting column and a lifting cylinder are provided below the heating assembly. The limiting support has a lifting through hole for the lifting column to pass through. The lifting cylinder is used to drive the lifting column to rise and fall, so that the lifting column passes through the lifting through hole to move the gear ring fixture located at the heating station closer to or away from the iron core. That is, after the turntable drives the gear ring fixture to rotate to the heating station, the lifting cylinder drives the lifting column to rise to a height position that makes the gear ring fixture and the iron core form a closed magnetic circuit. After heating is completed, the gear ring fixture is driven to fall, and then the turntable drives the gear ring fixture to rotate to the unloading station.

[0013] Furthermore, a heat insulation pad for the lifting column and a lifting bracket linked to the lifting column are provided between the lifting column and the lifting cylinder. The lifting bracket is connected to the lifting cylinder via a cylinder floating joint. The heat insulation pad minimizes the heat transfer from the lifting column to the lifting cylinder, thus extending the service life of the equipment.

[0014] In one possible implementation, the gear ring eddy current heating device further includes a frame on which a linear guide rail is provided, and a slider adapted to the linear guide rail is provided on the lifting bracket of the lifting column, and the lifting cylinder drives the lifting bracket to slide along the linear guide rail.

[0015] In one possible implementation, the gear ring eddy current heating device further includes a cabinet base and a cabinet cover located on the cabinet base, the heating component is disposed inside the cabinet cover, and the turntable is mounted on the cabinet base. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of the gear ring eddy current heating device provided by this utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of the rotary structure of the eddy current heating device for the gear ring;

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 for Figure 1 Schematic diagram of the assembly of the turntable, indexing table and adjustment components of the eddy current heating device for the gear ring;

[0020] Figure 5 for Figure 1 Schematic diagram of the lifting column and its connection structure in the eddy current heating device for the gear ring;

[0021] Figure 6 for Figure 5 The image shows a front view of the lifting column and its connecting structure.

[0022] In the diagram, 1. Turntable; 11. Gear ring fixture; 111. Limiting support; 12. Gear shaft fixture; 13. Sensor sensing block; 14. Indexing table; 2. Heating assembly; 3. Adjustment assembly; 31. First adjusting block; 32. Second adjusting block; 33. Indexing table adjustment plate; 331. Waist-shaped hole; 41. Lifting column; 42. Lifting column heat insulation pad; 43. Lifting bracket; 44. Cylinder floating joint; 45. Lifting cylinder; 46. Cylinder mounting pad; 47. Linear guide rail; 48. Slider; 5. Cabinet top cover; 6. Cabinet base. Detailed Implementation

[0023] First, those skilled in the art should understand that the following embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0024] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0025] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] To make the objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments are described in detail below with reference to the accompanying drawings.

[0027] like Figures 1 to 2As shown, this utility model provides a gear ring eddy current heating device, including a turntable 1 and a heating assembly 2. The turntable 1 is provided with a gear ring fixture 11 for positioning the gear ring, and a gear shaft fixture 12 is also provided on the turntable 1. The gear shaft fixture 12 is used to position the gear shaft that is adapted to the gear ring, and a gear shaft fixture 12 is paired with each gear ring fixture 11 on its side. The heating assembly 2 includes an iron core. The heating assembly 2 is located above one side of the turntable 1. When the gear ring fixture 11 rotates with the turntable 1 to a heating position located below the heating assembly 2, the iron core and the gear ring on the gear ring fixture form a closed magnetic circuit. When the gear ring fixture 11 rotates with the turntable 1 to a loading or unloading position away from the heating assembly 2, the iron core and the gear ring do not form a closed magnetic circuit.

[0028] In this embodiment, a gear ring fixture 11 and a gear shaft fixture 12 constitute a set of positioning fixtures. Three sets of the positioning fixtures are provided on the turntable 1. When the gear ring fixture 11 in one set of positioning fixtures is located at the heating station, the other two sets of positioning fixtures are located at the loading station and the unloading station, respectively. This can simultaneously realize gear ring heating and loading / unloading, thereby maximizing production efficiency.

[0029] In this embodiment, three sets of positioning fixtures are arranged in a ring on the surface of the turntable 1, with each set spaced 120° apart, and the gear ring fixture 11 and the gear shaft fixture 12 are spaced apart. When the heating is completed and the station needs to be switched, the turntable 1 is driven to rotate 120 degrees, the workpiece to be heated (gear ring) on ​​the loading station arrives at the heating station, and the heated gear ring rotates to the unloading station.

[0030] In this embodiment, in order to achieve precise control of the rotation angle, the turntable 1 is driven to rotate by the indexing table 14, and a sensor block 13 is provided on the outer circumference of the turntable 1. The sensor block 13 is used to determine the rotation position of the turntable 1, such as whether it has just rotated to a specific work position.

[0031] In this embodiment, the gear ring eddy current heating device includes a frame, as shown in the attached figure. Figure 3 Appendix Figure 4 The indexing table 14 is connected to the machine frame via an adjustment assembly 3. The adjustment assembly 3 includes an indexing table adjustment plate 33, a first adjustment block 31 connected to the indexing table adjustment plate 33 via a slotted hole 331, and a second adjustment block 32 mounted on the machine frame. The first adjustment block 31 is also provided with a plurality of first adjustment holes for engaging with bolts. The first adjustment block 31 is detachably connected to the second adjustment block 32 via bolts. (Refer to the attached figure.) Figure 5 The first adjustment hole can be set on the side of the first adjustment block 31, or it can be set above or below the side of the first adjustment block 31, and the opening position can be adapted to the connection position of the second adjustment block.

[0032] Furthermore, it also includes a lifting mechanism for lifting the gear ring tool 11, which is located below the heating assembly 2 (and also below the gear ring tool 11).

[0033] The specific operation procedure of this device is as follows: The operator turns on the power and puts the device into standby mode; the operator manually places the workpieces (gear ring + gear shaft) into the corresponding fixtures located at the loading position; after the workpiece barcode reader scans the code and confirms that the workpiece loading is successful, the operator presses the left and right start buttons simultaneously with both hands; the turntable rotates 120 degrees, and after the heated workpiece (gear ring) reaches the heating position, the lifting mechanism under the gear ring fixture lifts upward, raising the gear ring to the heating height (the upper surface of the gear ring is in close contact with the heating surface of the eddy current heating module); the eddy current heating module and the workpiece form an electromagnetic closed loop, and the workpiece begins to be heated; after the temperature sensor detects that the workpiece has been heated to the set temperature, the eddy current heating module stops heating; the lifting mechanism descends, and the workpiece returns to its original position; the loading turntable rotates another 120 degrees in the same direction, and the gear ring and gear shaft reach the unloading position; after receiving the signal, the gripping robot moves to the unloading position to pick up the workpiece and transfer it to the next pressing position; after the workpiece is removed, the turntable continues to rotate another 120 degrees to the loading position to start the next work cycle.

[0034] In one embodiment, reference is made to the appendix. Figure 2 Appendix Figure 5 Appendix Figure 6 The turntable 1 is provided with a limiting support 111 for radially limiting the gear ring fixture 11. A lifting column 41 and a lifting cylinder 45 are provided below the heating assembly 2. The limiting support 111 is provided with a lifting through hole for the lifting column 41 to pass through. The lifting cylinder 45 is used to drive the lifting column 41 to rise and fall, so that the lifting column 41 passes through the lifting through hole to drive the gear ring fixture 11 located at the heating position to move closer to or away from the iron core, so that the gear ring fixture 11 can form a closed magnetic circuit with the iron core. That is, when the turntable drives the gear ring fixture 11 to rotate to the heating position, the lifting cylinder drives the lifting column to rise to a height sufficient to make the gear ring fixture 11 and the iron core form a closed magnetic circuit.

[0035] Furthermore, a lifting column heat insulation pad 42 and a lifting bracket 43 that are linked with the lifting column 41 are provided between the lifting column 41 and the lifting cylinder 45. The lifting bracket 43 is connected to the lifting cylinder 45 through a cylinder floating joint 44.

[0036] Furthermore, it also includes a frame, on which a linear guide rail 47 is provided, and a slider 48 adapted to the linear guide rail 47 is provided on the lifting bracket 43 of the lifting column 41. The lifting cylinder 45 drives the lifting bracket 43 to slide along the linear guide rail 47, and a cylinder mounting pad 46 is provided at the bottom of the lifting cylinder 45.

[0037] In one embodiment, the gear ring eddy current heating device further includes a cabinet base 6 and a cabinet cover 5 located on the cabinet base 6. The heating component 2 is disposed inside the cabinet cover 5, and the turntable 1 is mounted on the cabinet base 6. The turntable 1 serves as an operating platform, with a height of approximately 900mm, conforming to ergonomics and reducing the labor intensity of operators. The transmission control structure is located at the rear of the entire equipment, while the control panel is at the front of the entire equipment, improving the convenience of operation.

[0038] In the above scheme, the product technical standards are designed in accordance with GB / T5226.1-96 "General Technical Conditions for Electrical Equipment of Industrial Machinery" and IEC439-76 "International Electrotechnical Commission Standards" in combination with the heating requirements of the customer. The demagnetization complies with JB / T6641-2007 standard, and the residual magnetism is no more than 4 millitrile.

[0039] The above technical solution adopts the principle of magnetic field eddy currents. Under power frequency (50-60Hz) conditions, the main unit of the heating component acts as a transformer with a special structure, and the workpiece being heated and the iron core of the heating component form a closed magnetic circuit. During operation, eddy currents are generated in the workpiece through the magnetic lines of force of the heater, and it is rapidly heated.

[0040] In the above technical solution, the main unit of the heating assembly has overheat, overload, and short-circuit safety protection devices with automatic tripping. The conductors are double-glass-wire copper flat wires, and the windings are dried, impregnated with varnish, and then encapsulated with epoxy resin. The withstand voltage is tested according to IEC standards, and the stability test requires energizing at 2000V for 5 minutes; at this time, the insulation resistance should still be greater than 2MΩ, demonstrating excellent insulation performance and sufficient safety protection to ensure personal safety. The main unit core uses cold-rolled silicon steel sheets with higher magnetic permeability.

[0041] In the description of this application, the reference to terms such as "this embodiment," "an embodiment," etc., means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0042] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A gear ring eddy current heating device, comprising a turntable (1) and a heating assembly (2), wherein the turntable (1) is provided with a gear ring fixture (11) for positioning the gear ring, characterized in that: The turntable (1) is also provided with a gear shaft fixture (12), which is used to position the gear shaft that is compatible with the gear ring, and a gear shaft fixture (12) is provided on the side of each gear ring fixture (11). The heating assembly (2) includes an iron core. The heating assembly (2) is located above one side of the turntable (1). When the gear ring fixture (11) rotates with the turntable (1) to the heating position below the heating assembly (2), the iron core and the gear ring on the gear ring fixture (11) form a closed magnetic circuit.

2. The gear ring eddy current heating device according to claim 1, characterized in that: A gear ring fixture (11) and a gear shaft fixture (12) constitute a set of positioning fixtures. At least three sets of the positioning fixtures are provided on the turntable (1). When the gear ring fixture (11) in one of the positioning fixtures is located at the heating station, the other two sets of positioning fixtures are located at the loading station and the unloading station, respectively.

3. The gear ring eddy current heating device according to claim 2, characterized in that: Several positioning fixtures are arranged in a ring on the surface of the turntable (1), and the gear ring fixture (11) and the gear shaft fixture (12) are spaced apart.

4. The gear ring eddy current heating device according to claim 1, characterized in that: The turntable (1) is driven to rotate by the indexing table (14), and a sensor block (13) for determining the rotation position of the turntable (1) is provided on the outer periphery of the turntable (1).

5. The gear ring eddy current heating device according to claim 4, characterized in that: It also includes a frame, the indexing table (14) is connected to the frame via an adjustment assembly (3), the adjustment assembly (3) includes an indexing table adjustment plate (33), a first adjustment block (31) connected to the indexing table adjustment plate (33) via a waist-shaped hole (331), and a second adjustment block (32) mounted on the frame. The first adjusting block (31) is also provided with a number of first adjusting holes for cooperating with bolts. The first adjusting block (31) is detachably connected to the second adjusting block (32) by bolts.

6. The gear ring eddy current heating device according to claim 1, characterized in that: The turntable (1) is provided with a limiting support (111) for radially limiting the gear ring fixture (11). A lifting column (41) and a lifting cylinder (45) are provided below the heating assembly (2). The limiting support (111) is provided with a lifting through hole for the lifting column (41) to pass through. The lifting cylinder (45) is used to drive the lifting column (41) to rise and fall, so that the lifting column (41) passes through the lifting through hole to drive the gear ring fixture (11) located at the heating station to move closer to or away from the iron core.

7. The gear ring eddy current heating device according to claim 6, characterized in that: A lifting column heat insulation pad (42) and a lifting bracket (43) linked with the lifting column (41) are provided between the lifting column (41) and the lifting cylinder (45). The lifting bracket (43) is connected to the lifting cylinder (45) through a cylinder floating joint (44).

8. The gear ring eddy current heating device according to claim 7, characterized in that: It also includes a frame on which a linear guide rail (47) is provided, and a slider (48) adapted to the linear guide rail (47) is provided on the lifting bracket (43) of the lifting column (41), and the lifting cylinder (45) drives the lifting bracket (43) to slide along the linear guide rail (47).

9. The gear ring eddy current heating device according to claim 1, characterized in that: It also includes a cabinet base (6) and a cabinet cover (5) located on the cabinet base (6), the heating component (2) is disposed inside the cabinet cover (5), and the turntable (1) is installed on the cabinet base (6).

Images