High-temperature furnace sintering furnace for hard alloy radial bearing

Abstract

The utility model discloses a sintering furnace for a hard alloy radial bearing high-temperature furnace, which belongs to the technical field of sintering furnaces and comprises a sintering furnace body and a cabinet door plate. The control panel is arranged on one side of the sintering furnace main body, and a driving shaft is arranged in the sintering furnace main body; according to the utility model, on the premise that the plurality of bearing plates can rotate, the stable movement in the horizontal direction can be realized, the heating uniformity of the hard alloy radial bearing in the heating process is greatly guaranteed, the performance difference caused by non-uniform heat distribution is avoided, and further, the heating efficiency of the hard alloy radial bearing is improved. A positioning wheel at the bottom end of a positioning shaft and an outer gear ring on the outer side of a positioning ring enable a tray and a plurality of positioning plates to rotate in opposite directions, so that the contact uniformity of the hard alloy radial bearing and a high-temperature environment is further improved, and the quality consistency of the bearing in the sintering process is ensured; and the using practicability and efficiency of the hard alloy radial bearing in a high-temperature furnace or a sintering furnace are remarkably improved.

Description

Technical Field

[0001] This utility model belongs to the field of sintering furnace technology, specifically relating to a high-temperature sintering furnace for cemented carbide radial bearings. Background Technology

[0002] A sintering furnace is a furnace used at high temperatures to bond the solid particles of ceramic green bodies together, causing grain growth, reducing porosity (pores) and grain boundaries, and through mass transfer, shrinking the overall volume and increasing the density, ultimately resulting in a dense polycrystalline sintered body with a specific microstructure. A high-temperature sintering furnace for cemented carbide radial bearings is specifically designed for the high-temperature sintering of cemented carbide radial bearings. It primarily uses high-temperature sintering to tightly bond the cemented carbide material to the bearing matrix material, forming radial bearings with high hardness, high wear resistance, and high impact resistance. During the sintering process, the microstructure and properties of the bearings can also be adjusted to meet different application requirements.

[0003] Chinese Patent Publication No. CN216482185U discloses a high-temperature sintering furnace for cemented carbide radial bearings, comprising a furnace body, a support base, and a placement plate. The furnace body has heating tubes on both its left and right sides. A protective plate is hinged to the front side of the furnace body. Two support bases are positioned inside the furnace body, corresponding to each other. The placement plate has T-shaped blocks on both sides of its bottom end that slide against the T-shaped grooves at the top of the support base. Pushing the placement plate causes the T-shaped blocks at its bottom end to slide against the T-shaped grooves at the top of the support base, allowing the placement plate to enter the furnace body. The heating tubes are then activated to heat the furnace body, facilitating subsequent high-temperature processing. A rotating unit is located at the top of the placement plate. The furnace also includes a controller located on the left side of the furnace body. The input end of the heating tube is electrically connected to the output end of the controller. This high-temperature sintering furnace for cemented carbide radial bearings offers high safety, uniform heating, and high operating efficiency.

[0004] In practical use, this utility model typically involves placing a cemented carbide radial bearing inside a sintering furnace for firing. To ensure the uniformity of the bearing firing, the cemented carbide radial bearing is rotated inside the high-temperature sintering furnace. However, the rotation method of existing high-temperature sintering furnaces for cemented carbide radial bearings is relatively simple, only achieving basic rotational movements. This makes it difficult to ensure that all parts of the cemented carbide radial bearing can be in uniform and effective contact with the high-temperature environment, leading to inconsistencies in the sintering quality of the bearing. Consequently, this affects the effectiveness and practicality of the high-temperature sintering furnace for cemented carbide radial bearings in practical applications. Utility Model Content

[0005] This invention addresses the problem of ensuring uniform firing of cemented carbide radial bearings in existing technologies by proposing a high-temperature sintering furnace for cemented carbide radial bearings.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-temperature sintering furnace for cemented carbide radial bearings, comprising:

[0007] Sintering furnace body and cabinet door panels;

[0008] The control panel is located on one side of the sintering furnace body. The sintering furnace body is equipped with a drive shaft, and a tray is provided on the outside of the drive shaft.

[0009] A positioning ring is installed inside the sintering furnace body. The positioning ring is provided with multiple support rods. Positioning plates are provided between the multiple support rods located on the same side. The multiple positioning plates are located at the upper end of the tray.

[0010] Multiple support plates are respectively disposed on the upper end of multiple positioning plates. Each of the multiple support plates has a placement groove on its upper end, and each of the multiple support plates has a handle at one end.

[0011] In a preferred embodiment, a drive motor is provided at the upper end of the sintering furnace body, and the upper end of the drive shaft passes through the sintering furnace body and is located at the output end of the drive motor.

[0012] In a preferred embodiment, an external toothed ring is provided on the outer side of the positioning ring, and a positioning shaft is rotatably connected to one side of the upper end of the sintering furnace body. A positioning wheel adapted to the external toothed ring is provided at the bottom end of the positioning shaft. The positioning wheel is meshed with the external toothed ring. Both the drive shaft and the positioning shaft are provided with pulleys on their outer sides, and the two pulleys are provided with the same transmission belt.

[0013] In a preferred embodiment, the inner wall of the sintering furnace body is provided with a snap-fit ​​groove, and the outer side of the positioning ring is provided with a snap-fit ​​ring adapted to the snap-fit ​​groove. The snap-fit ​​ring is located in the snap-fit ​​groove and is slidably connected to the side wall of the snap-fit ​​groove.

[0014] To enable the carbide radial bearing to be heated more evenly, the upper end of the tray is provided with a guide groove, which is curved. The bottom ends of the multiple positioning plates are provided with guide shafts that are adapted to the guide groove. The bottom ends of the multiple guide shafts are located in the guide groove and are slidably connected to the side wall of the guide groove.

[0015] In a preferred embodiment, each of the multiple support rods has a limiting groove on one side, and each of the multiple positioning plates has a limiting plate on both sides that is adapted to the limiting groove. The multiple limiting plates are respectively located in the multiple limiting grooves and are slidably connected to the side wall of the limiting groove.

[0016] To facilitate the removal of the fired carbide radial bearing, a fixing plate is provided on one side of the upper end of each of the positioning plates, and a plurality of limiting rods are provided on one side of each of the fixing plates. A plurality of limiting holes adapted to the limiting rods are opened on one side of each of the bearing plates. The plurality of limiting rods are respectively located in the plurality of limiting holes and are slidably connected to the side wall of the limiting holes.

[0017] In a preferred embodiment, each of the plurality of limiting rods is provided with a limiting spring at one end, and the other end of each of the plurality of limiting springs is respectively provided on one side of a plurality of limiting holes.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This invention, through the guide groove set at the upper end of the tray and the guide shaft at the bottom end of multiple positioning plates, enables multiple bearing plates to rotate and move smoothly in the horizontal direction, greatly ensuring the uniformity of heating of the cemented carbide radial bearing during the heating process and avoiding performance differences caused by uneven heat distribution. Furthermore, the positioning wheel at the bottom end of the positioning shaft and the external toothed ring on the outside of the positioning ring enable the tray and multiple positioning plates to rotate in opposite directions, further improving the uniformity of contact between the cemented carbide radial bearing and the high-temperature environment, ensuring the consistency of bearing quality during the sintering process, and significantly improving the practicality and efficiency of cemented carbide radial bearings in high-temperature furnaces or sintering furnaces.

[0020] This invention, through multiple limiting rods set on one side of multiple fixed plates and multiple limiting holes on one side of multiple bearing plates, enables the bearing plates to move smoothly and steadily to the outside of the high-temperature sintering furnace when needed. This greatly facilitates the process of removing the cemented carbide radial bearings after sintering, eliminating the need for complicated operating procedures or additional auxiliary tools, and allowing for easy and rapid removal of the bearings. This not only significantly improves the ease of use of the high-temperature sintering furnace for cemented carbide radial bearings, but also effectively shortens the production cycle and improves overall production efficiency, making the high-temperature sintering furnace for cemented carbide radial bearings even more convenient to use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main appearance of the structure of this utility model;

[0022] Figure 2 This is a schematic front cross-sectional view of the structure of this utility model;

[0023] Figure 3 This is a cross-sectional schematic diagram of the positioning ring and support rod of the present invention.

[0024] Figure 4 This is a cross-sectional schematic diagram of the support plate of the present invention.

[0025] In the diagram: 1. Sintering furnace body; 2. Cabinet door panel; 3. Control panel; 4. Drive shaft; 5. Tray; 6. Positioning ring; 7. Support rod; 8. Positioning plate; 9. Bearing plate; 10. Handle; 11. Drive motor; 12. External gear ring; 13. Positioning shaft; 14. Positioning wheel; 15. Transmission belt; 16. Snap ring; 17. Guide groove; 18. Guide shaft; 19. Limiting plate; 20. Fixing plate; 21. Limiting rod; 22. Limiting spring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Example 1:

[0028] Please see Figure 1-4 This utility model provides a high-temperature sintering furnace for cemented carbide radial bearings, comprising:

[0029] Sintering furnace body 1 and cabinet door panel 2;

[0030] Control panel 3 is located on one side of sintering furnace body 1. Drive shaft 4 is provided inside sintering furnace body 1, and tray 5 is provided on the outside of drive shaft 4.

[0031] Positioning ring 6 is set inside the sintering furnace body 1. Multiple support rods 7 are provided inside the positioning ring 6. Positioning plates 8 are provided between the multiple support rods 7 on the same side. The multiple positioning plates 8 are all located at the upper end of the tray 5.

[0032] Multiple support plates 9 are respectively set on the upper end of multiple positioning plates 8. Each support plate 9 has a placement groove on its upper end and a handle 10 on one end.

[0033] Specifically, such as Figure 1 and Figure 2 As shown, a drive motor 11 is provided at the upper end of the sintering furnace body 1. The drive motor 11 is existing technology and will not be described in detail here. The upper end of the drive shaft 4 passes through the sintering furnace body 1 and is located at the output end of the drive motor 11. When the drive motor 11 is started, its output end can drive the drive shaft 4 to rotate, thereby driving the tray 5 to rotate.

[0034] Specifically, such as Figure 2As shown, an external toothed ring 12 is provided on the outer side of the positioning ring 6. A positioning shaft 13 is rotatably connected to one side of the upper end of the sintering furnace body 1. A positioning wheel 14 adapted to the external toothed ring 12 is provided at the bottom end of the positioning shaft 13. The positioning wheel 14 is meshed with the external toothed ring 12. Both the drive shaft 4 and the positioning shaft 13 are provided with pulleys on their outer sides. The two pulleys are provided with the same transmission belt 15. When the drive shaft 4 rotates, the positioning wheel 14 can be driven to rotate synchronously through the transmission belt 15. The positioning wheel 14 will drive the external toothed ring 12 and the positioning ring 6 to rotate in the opposite direction, thereby driving multiple positioning plates 8 and multiple bearing plates 9 to rotate, so that the hard alloy radial bearing can be heated more fully.

[0035] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, the inner wall of the sintering furnace body 1 is provided with a snap-fit ​​groove, and the outer side of the positioning ring 6 is provided with a snap-fit ​​ring 16 that is adapted to the snap-fit ​​groove. The snap-fit ​​ring 16 is located in the snap-fit ​​groove and is slidably connected to the side wall of the snap-fit ​​groove. The snap-fit ​​ring 16, in conjunction with the snap-fit ​​groove in the sintering furnace body 1, can limit the position of the positioning ring 6 without affecting its rotation, prevent its position from shifting, and ensure the stability of the bearing sintering of cemented carbide.

[0036] Specifically, such as Figure 2 and Figure 3 As shown, the upper end of the tray 5 is provided with a guide groove 17, which is curved. The bottom ends of multiple positioning plates 8 are provided with guide shafts 18 that are adapted to the guide groove 17. The bottom ends of multiple guide shafts 18 are located inside the guide groove 17 and are slidably connected to the side wall of the guide groove 17.

[0037] Through its design, when the drive shaft 4 drives the tray 5 to rotate, the guide groove 17 can rotate. When the guide groove 17 rotates, it can drive multiple guide shafts 18 to move horizontally back and forth. This allows multiple positioning plates 8 and multiple bearing plates 9 to move horizontally while rotating, so that the hard alloy radial bearing can be heated more evenly.

[0038] Specifically, such as Figure 3 As shown, each of the multiple support rods 7 has a limiting groove on one side, and each of the multiple positioning plates 8 has a limiting plate 19 on both sides that is adapted to the limiting groove. The multiple limiting plates 19 are located in the multiple limiting grooves and are slidably connected to the side wall of the limiting groove. The multiple limiting plates 19, in conjunction with the limiting grooves on one side of the multiple support rods 7, can restrict the movement of the multiple positioning plates 8 and the multiple bearing plates 9, thus ensuring their stability during movement.

[0039] See Figure 1-4When firing cemented carbide radial bearings in a high-temperature sintering furnace, multiple cemented carbide radial bearings to be fired are first placed in multiple bearing plates 9. Then, the drive motor 11 is started. The output of the drive motor 11 drives the positioning shaft 13 and positioning wheel 14 to rotate through the transmission belt 15. The positioning wheel 14 drives the external toothed ring 12 and positioning ring 6 to rotate. The positioning ring 6 drives multiple positioning plates 8 and multiple bearing plates 9 to rotate, so that they can be heated evenly. When the drive shaft 4 rotates, it also drives the tray 5 to rotate. The tray 5 drives the guide groove 17 to rotate. When the guide groove 17 rotates, it drives multiple guide shafts 18 to move horizontally back and forth. This allows multiple cemented carbide radial bearings to rotate and move horizontally, further improving the comprehensiveness and uniformity of the cemented carbide radial bearings in contact with high temperature, and ensuring the quality of cemented carbide radial bearing firing in the high-temperature sintering furnace.

[0040] Example 2:

[0041] Please see Figure 1-4 This utility model provides a high-temperature sintering furnace for cemented carbide radial bearings, comprising:

[0042] Sintering furnace body 1 and cabinet door panel 2;

[0043] Control panel 3 is located on one side of sintering furnace body 1. Drive shaft 4 is provided inside sintering furnace body 1, and tray 5 is provided on the outside of drive shaft 4.

[0044] Positioning ring 6 is set inside the sintering furnace body 1. Multiple support rods 7 are provided inside the positioning ring 6. Positioning plates 8 are provided between the multiple support rods 7 on the same side. The multiple positioning plates 8 are all located at the upper end of the tray 5.

[0045] Multiple support plates 9 are respectively set on the upper end of multiple positioning plates 8. Each support plate 9 has a placement groove on its upper end and a handle 10 on one end.

[0046] Specifically, such as Figure 4 As shown, a fixing plate 20 is provided on one side of the upper end of multiple positioning plates 8, and multiple limiting rods 21 are provided on one side of multiple fixing plates 20. Multiple limiting holes adapted to the limiting rods 21 are opened on one side of multiple bearing plates 9. The multiple limiting rods 21 are respectively located in the multiple limiting holes and are slidably connected to the side wall of the limiting holes.

[0047] Through its design, multiple limiting rods 21 set on one side of the fixed plate 20, in conjunction with multiple limiting holes on one side of multiple bearing plates 9, allow multiple bearing plates 9 to move to the outside of the sintering furnace body 1, thereby facilitating the removal of the sintered cemented carbide radial bearings and making the high-temperature sintering furnace for cemented carbide radial bearings more convenient to use.

[0048] Specifically, such as Figure 4 As shown, each of the multiple limiting rods 21 has a limiting spring 22 at one end, and the other end of the multiple limiting springs 22 is respectively set on one side of the multiple limiting holes. The limiting springs 22 can restrict the position of the bearing plate 9 and can drive the bearing plate 9 to return to its original position.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sintering furnace for hard metal radial bearing high temperature furnace, characterized in that, Include: Sintering furnace body (1) and cabinet door plate (2); Control panel (3) is arranged on one side of sintering furnace body (1), driving shaft (4) is arranged in sintering furnace body (1), and driving shaft (4) is arranged on the outside of driving shaft (4); Tray (5) is arranged on the outside of driving shaft (4); Positioning ring (6) is arranged in sintering furnace body (1), a plurality of supporting rods (7) are arranged in positioning ring (6), positioning plates (8) are arranged between a plurality of supporting rods (7) on the same side, and a plurality of positioning plates (8) are arranged on the upper end of tray (5); A plurality of bearing plates (9) are arranged on the upper end of a plurality of positioning plates (8), a plurality of placing grooves are formed in the upper end of a plurality of bearing plates (9), and a plurality of handles (10) are arranged on one end of a plurality of bearing plates (9).

2. A furnace for sintering of cemented carbide radial bearings according to claim 1, characterized in that: The upper end of the sintering furnace body (1) is provided with a driving motor (11), the upper end of the driving shaft (4) penetrates the sintering furnace body (1), and is arranged on the output end of the driving motor (11).

3. A high temperature furnace for sintering of cemented carbide radial bearings according to claim 1, characterized in that: The outer side of the positioning ring (6) is provided with an outer gear ring (12), one side of the upper end of the sintering furnace body (1) is rotatably connected with a positioning shaft (13), the bottom end of the positioning shaft (13) is provided with a positioning wheel (14) matched with the outer gear ring (12), the positioning wheel (14) is in meshing connection with the outer gear ring (12), the driving shaft (4) and the outer side of the positioning shaft (13) are provided with belt pulleys, and the two belt pulleys are provided with the same transmission belt (15).

4. A high temperature furnace for sintering of cemented carbide radial bearings according to claim 1, characterized in that: The inner wall of the sintering furnace body (1) is provided with a clamping groove, the outer side of the positioning ring (6) is provided with a clamping ring (16) matched with the clamping groove, the clamping ring (16) is located in the clamping groove and is in sliding connection with the side wall of the clamping groove.

5. A high temperature furnace for sintering of cemented carbide radial bearings according to claim 1, characterized in that: The upper end of the tray (5) is provided with a guide groove (17), the guide groove (17) is arranged in a curved shape, the bottom end of a plurality of positioning plates (8) is provided with a guide shaft (18) matched with the guide groove (17), and the bottom end of a plurality of guide shafts (18) is located in the guide groove (17) and is in sliding connection with the side wall of the guide groove (17).

6. A high temperature furnace for sintering of cemented carbide radial bearings according to claim 1, characterized in that: A plurality of limiting grooves are formed in one side of a plurality of supporting rods (7), a plurality of limiting plates (19) matched with the limiting grooves are arranged on both sides of a plurality of positioning plates (8), and a plurality of limiting plates (19) are respectively located in a plurality of limiting grooves and are in sliding connection with the side wall of the limiting groove.

7. A high temperature furnace for sintering of cemented carbide radial bearings according to claim 1, characterized in that: A plurality of fixing plates (20) are arranged on one side of the upper end of a plurality of positioning plates (8), a plurality of limiting rods (21) are arranged on one side of a plurality of fixing plates (20), a plurality of limiting holes matched with the limiting rods (21) are formed in one side of a plurality of bearing plates (9), and a plurality of limiting rods (21) are respectively located in a plurality of limiting holes and are in sliding connection with the side wall of the limiting hole.

8. A furnace for sintering of cemented carbide radial bearings according to claim 7, characterized in that: One end of a plurality of limiting rods (21) is provided with a limiting spring (22), and the other end of a plurality of limiting springs (22) is arranged on one side of a plurality of limiting holes.

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