Tapered roller carbonitriding heat treatment device

Abstract

The utility model discloses a tapered roller carbonitriding heat treatment device which comprises a reaction furnace, a placing cylinder is rotatably installed in the reaction furnace, the two ends of the placing cylinder penetrate through and extend to the outer side of the reaction furnace, a communicating hole is formed in the side face of the placing cylinder, the communicating hole is located in the reaction furnace, the two ends of the placing cylinder are open, and the communicating hole is located in the reaction furnace. A first sealing piece and a second sealing piece for sealing the opening are arranged at the two ends of the containing barrel respectively, a driving assembly for driving the containing barrel to rotate is arranged on the side face of the reacting furnace, and a communicating pipe communicated with an inner cavity of the reacting furnace is installed on the side face of the reacting furnace. According to the carbonitriding heat treatment device for the tapered roller, the bearing roller blank is subjected to heat treatment, so that the bearing roller blank obtains proper hardness and strength, meanwhile, internal stress is eliminated, the service life of the bearing roller is prolonged, in the heat treatment process of the bearing roller, the bearing roller can be uniformly heated, and the preparation quality of the bearing roller is ensured; and meanwhile, feeding and discharging of the bearing rollers are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing processing, in particular to a tapered roller carbonitriding heat treatment device. Background Art

[0002] As one of the core components of the bearing, the processing quality of the bearing roller directly determines the service life and performance of the entire bearing. By heat treating the bearing roller blank, it can obtain the appropriate hardness and strength, and eliminate internal stress, which has a significant effect on improving its service life. At present, when the bearing roller is heat treated by the carbonitriding process, it is inconvenient to take and place the bearing roller blank, and the bearing roller blank is heated unevenly during the process, resulting in low preparation quality of the bearing roller, which is not conducive to the use of the bearing roller. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a tapered roller carbonitriding heat treatment device. By heat treating the bearing roller blank, it can obtain suitable hardness and strength, and at the same time eliminate internal stress, thereby increasing the service life of the bearing roller. During the heat treatment process of the bearing roller, it can be heated evenly to ensure the preparation quality of the bearing roller. At the same time, it is convenient for loading and unloading the bearing roller, which can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tapered roller carbonitriding heat treatment device, comprising a reaction furnace, a placement tube is rotatably installed in the reaction furnace, and both ends of the placement tube penetrate and extend to the outside of the reaction furnace, a connecting hole is opened on the side of the placement tube, and the connecting hole is located in the reaction furnace, both ends of the placement tube are open, and a first seal and a second seal for opening sealing are respectively provided at both ends of the placement tube, a driving component for driving the placement tube to rotate is provided on the side of the reaction furnace, and a connecting pipe connected to its inner cavity is installed on the side of the reaction furnace.

[0005] As a preferred technical solution of the utility model, a circular track located outside the reactor is installed on the side of the placement cylinder, a positioning seat is fixed on the side of the reactor, the driving assembly includes a driving motor installed on the positioning seat, a driving wheel is installed on the driving shaft of the driving motor, and the driving wheel is located in the circular track and in contact with the inner side of the circular track.

[0006] As a preferred technical solution of the utility model, a feed plate is installed at one end of the placement barrel close to the first seal, a mounting seat is installed on the side of the feed plate, an adjusting screw is installed on the internal thread of the mounting seat, and the first seal includes a push plate installed at the end of the adjusting screw and used to seal the open end of the placement barrel.

[0007] As a preferred technical solution of the utility model, a discharge plate is installed at one end of the placement tube close to the second sealing member, and the second sealing member includes a sealing plate arranged at the end of the placement tube and used to seal the opening of the placement tube, and a handle is installed on the side of the sealing plate.

[0008] As a preferred technical solution of the utility model, a spiral plate is arranged in the placing cylinder, and the spiral plate is fixedly mounted on the inner wall of the placing cylinder.

[0009] As a preferred technical solution of the utility model, there are a plurality of communicating holes, and the plurality of communicating holes are distributed on the outer side of the placing tube as a whole, and the plurality of communicating holes are all located in the reaction furnace.

[0010] As a preferred technical solution of the utility model, a sealed bearing is installed at the connection between the reaction furnace and the placement tube.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The tapered roller carbonitriding heat treatment device of the utility model example places the bearing roller blank on the feed plate, and drives the push plate to move by the set adjusting screw to push the bearing roller blank on the feed plate into the placement tube, so as to facilitate the feeding of the bearing roller during heat treatment. At the same time, the push plate is positioned by the set adjusting screw so that the push plate seals the opening at the end of the placement tube, and then the opening at the other end of the placement tube is sealed by the sealing plate. The bearing roller in the placement tube is heat treated by the reaction furnace, and at the same time, a carbon-nitrogen mixed gas is injected into the reaction furnace through the connecting pipe to carbonitridize the bearing roller, thereby improving the hardness and strength of the bearing roller and eliminating internal stress.

[0013] 2. The tapered roller carbonitriding heat treatment device of the utility model example controls the operation of the driving motor to make the driving wheel drive the placement cylinder to rotate. During this process, the bearing roller moves in the placement cylinder, so that the bearing roller is heated evenly to ensure its preparation quality. In addition, during the rotation of the placement cylinder, impurities and foreign matter generated during the heat treatment of the bearing roller fall off from the placement cylinder through the connecting hole, thereby preventing the impurities and foreign matter from affecting the heat treatment of the bearing roller.

[0014] 3. In the tapered roller carbonitriding heat treatment device of the utility model example, during the rotation of the placement cylinder, the bearing roller is constrained by the spiral plate and gradually moves forward in the placement cylinder. After the heat treatment is completed, the sealing plate is opened by the handle to facilitate the removal of the bearing roller from the placement cylinder after the heat treatment, thereby facilitating the unloading of the bearing roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 This is a structural schematic diagram of another viewing angle of the utility model;

[0017] Figure 3 It is a cross-sectional structural schematic diagram of the utility model;

[0018] Figure 4 It is a cross-sectional structural schematic diagram of the placement tube in the utility model.

[0019] In the figure: 1 reaction furnace, 2 placement cylinder, 3 sealing bearing, 4 connecting hole, 5 spiral plate, 6 connecting pipe, 7 ring track, 8 positioning seat, 9 driving motor, 10 driving wheel, 11 feeding plate, 12 mounting seat, 13 adjusting screw, 14 pushing plate, 15 discharge plate, 16 sealing plate, 17 handle. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 The utility model provides a technical solution: a tapered roller carbonitriding heat treatment device, comprising a reaction furnace 1, a placing tube 2 is rotatably installed in the reaction furnace 1, a sealing bearing 3 is installed at the connection between the reaction furnace 1 and the placing tube 2, the placing tube 2 is rotatably connected to the reaction furnace 1 through the sealing bearing 3, the position of the bearing roller in the placing tube 2 is adjusted by rotating the placing tube 2, so as to ensure that the bearing roller is heated evenly during the heat treatment process; and both ends of the placing tube 2 pass through and extend to the outside of the reaction furnace 1, so as to facilitate the loading and unloading of the bearing roller, both ends of the placing tube 2 are open, and the first sealing member and the second sealing member for sealing the opening are respectively arranged at both ends of the placing tube 2, the openings at both ends of the placing tube 2 are opened by the first sealing member and the second sealing member, the bearing roller is placed into the placing tube 2 from one of the openings, and the bearing roller is taken out from the other opening after the heat treatment is completed.

[0022] A connecting hole 4 is provided on the side of the placing tube 2, and the connecting hole 4 is located in the reaction furnace 1. A plurality of connecting holes 4 are provided, and the plurality of connecting holes 4 are distributed on the entire outer side of the placing tube 2, and the plurality of connecting holes 4 are all located in the reaction furnace 1. The plurality of connecting holes 4 are provided to facilitate the impurities and foreign matters generated during the heat treatment of the bearing rollers to fall off from the placing tube 2 through the connecting holes 4. A connecting pipe 6 connected to the inner cavity of the reaction furnace 1 is installed on the side of the reaction furnace 1, and a carbon-nitrogen mixed gas is injected into the reaction furnace 1 through the connecting pipe 6 to perform carbonitriding on the bearing rollers. The connecting holes 4 provided on the side of the placing tube 2 facilitate the carbon-nitrogen mixed gas to enter the placing tube 2 and contact with the bearing rollers. At the same time, the connecting holes 4 facilitate the heat energy in the reaction furnace 1 to act on the bearing rollers for heat treatment.

[0023] The side of the reactor 1 is provided with a driving assembly for driving the placement cylinder 2 to rotate, and the side of the placement cylinder 2 is provided with a circular track 7 located outside the reactor 1, and a positioning seat 8 is fixed to the side of the reactor 1. The driving assembly includes a driving motor 9 installed on the positioning seat 8, and a driving wheel 10 is installed on the driving shaft of the driving motor 9. The driving wheel 10 is located in the circular track 7 and contacts the inner side of the circular track 7. The driving motor 9 is controlled to work so that the driving wheel 10 drives the placement cylinder 2 to rotate. During this process, the bearing roller moves in the placement cylinder 2, so that the bearing roller is heated evenly to ensure its preparation quality. During the rotation of the placement cylinder 2, impurities and foreign matter generated during the heat treatment of the bearing roller fall off from the placement cylinder 2 through the connecting hole 4, so as to avoid the impurities and foreign matter from affecting the heat treatment of the bearing roller. It should be noted that the driving motor 9 used in the utility model is a commonly used electronic component in the prior art, and its working mode and circuit structure are all well-known technologies, which will not be described in detail here. When in use, its operation is controlled by a switch or PLC controller set outside. The driving wheel 10 and the circular track 7 can also be replaced by a gear set for transmission and driving.

[0024] A feed plate 11 is installed at one end of the placement tube 2 close to the first sealing member, a mounting seat 12 is installed on the side of the feed plate 11, and an adjusting screw 13 is installed on the internal thread of the mounting seat 12. The first sealing member includes a push plate 14 installed at the end of the adjusting screw 13 and used to seal the open end of the placement tube 2. The bearing roller blank is placed on the feed plate 11, and the push plate 14 is driven by the set adjusting screw 13 to move and push the bearing roller blank on the feed plate 11 into the placement tube 2, which is convenient for feeding the bearing roller during heat treatment. At the same time, the push plate 14 is positioned by the set adjusting screw 13 so that the push plate 14 seals the open end of the placement tube 2, which is convenient for subsequent heat treatment of the bearing roller.

[0025] A discharge plate 15 is installed at one end of the placement tube 2 close to the second sealing member, and the second sealing member includes a sealing plate 16 which is arranged at the end of the placement tube 2 and is used to seal the opening of the placement tube 2, and a handle 17 is installed on the side of the sealing plate 16. Preferably, the sealing plate 16 is rotatably installed at the end of the placement tube 2 through a hinge seat or a rotating shaft, and the opening at the other end of the placement tube 2 is sealed by the sealing plate 16, so that the bearing assembly is located in a sealed environment, and the bearing rollers in the placement tube 2 are heat treated by the reaction furnace 1, and at the same time, a carbon-nitrogen mixed gas is injected into the reaction furnace 1 through the connecting pipe 6 to carbonitridize the bearing rollers, thereby improving the hardness and strength of the bearing rollers and eliminating internal stress.

[0026] A spiral plate 5 is provided in the placing cylinder 2, and the spiral plate 5 is fixedly mounted on the inner wall of the placing cylinder 2. During the rotation of the placing cylinder 2, the bearing roller gradually moves forward in the placing cylinder 2 under the constraint of the spiral plate 5. After the heat treatment is completed, the sealing plate 16 is opened by the handle 17 to facilitate the removal of the bearing roller from the placing cylinder 2 after the heat treatment is completed, so as to facilitate the unloading of the bearing roller.

[0027] When using:

[0028] The bearing roller blank is placed on the feed plate 11, and the push plate 14 is driven to move by the adjusting screw 13 to push the bearing roller blank on the feed plate 11 into the placement tube 2, so as to facilitate the feeding of the bearing roller during heat treatment. At the same time, the push plate 14 is positioned by the adjusting screw 13 so that the push plate 14 seals the opening at the end of the placement tube 2, and then the opening at the other end of the placement tube 2 is sealed by the sealing plate 16. The bearing roller in the placement tube 2 is heat treated by the reaction furnace 1, and a carbon-nitrogen mixed gas is injected into the reaction furnace 1 through the connecting pipe 6 to perform carbonitriding on the bearing roller, thereby improving the hardness and strength of the bearing roller and eliminating internal stress;

[0029] By controlling the driving motor 9 to work, the driving wheel 10 drives the placement cylinder 2 to rotate. During this process, the bearing roller moves in the placement cylinder 2, so that the bearing roller is heated evenly to ensure its preparation quality. In addition, during the rotation of the placement cylinder 2, impurities and foreign objects generated during the heat treatment of the bearing roller fall off from the placement cylinder 2 through the connecting hole 4, thereby preventing the impurities and foreign objects from affecting the heat treatment of the bearing roller.

[0030] During the rotation of the placement cylinder 2, the bearing roller is constrained by the spiral plate 5 and gradually moves forward in the placement cylinder 2. After the heat treatment is completed, the sealing plate 16 is opened by the handle 17 to facilitate the removal of the bearing roller from the placement cylinder 2 after the heat treatment, thereby facilitating the unloading of the bearing roller.

[0031] The undisclosed parts in the present utility model are all prior art, and their specific structures, materials and working principles are not described in detail. Although the embodiments of the present utility model have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the attached claims and their equivalents.

Claims

1. A tapered roller carbonitriding heat treatment device, comprising a reaction furnace (1), characterized in that: A placement tube (2) is rotatably mounted in the reaction furnace (1), and both ends of the placement tube (2) penetrate through and extend to the outside of the reaction furnace (1). A connecting hole (4) is provided on the side of the placement tube (2), and the connecting hole (4) is located in the reaction furnace (1). Both ends of the placement tube (2) are open, and a first sealing member and a second sealing member for sealing the opening are respectively provided at both ends of the placement tube (2). A driving assembly for driving the placement tube (2) to rotate is provided on the side of the reaction furnace (1), and a connecting pipe (6) connected to the inner cavity of the reaction furnace (1) is installed on the side of the reaction furnace (1).

2. The tapered roller carbonitriding heat treatment device according to claim 1, characterized in that: A circular track (7) located outside the reaction furnace (1) is installed on the side of the placement cylinder (2), a positioning seat (8) is fixed on the side of the reaction furnace (1), the driving assembly comprises a driving motor (9) installed on the positioning seat (8), a driving wheel (10) is installed on the driving shaft of the driving motor (9), and the driving wheel (10) is located in the circular track (7) and contacts the inner side of the circular track (7).

3. The tapered roller carbonitriding heat treatment device according to claim 1, characterized in that: A feed plate (11) is mounted on one end of the placement barrel (2) close to the first sealing member, a mounting seat (12) is mounted on the side of the feed plate (11), an adjusting screw (13) is mounted on the internal thread of the mounting seat (12), and the first sealing member comprises a push plate (14) mounted on the end of the adjusting screw (13) and used to seal the open end of the placement barrel (2).

4. The tapered roller carbonitriding heat treatment device according to claim 1, characterized in that: A discharge plate (15) is installed at one end of the placement tube (2) close to the second sealing member, and the second sealing member comprises a sealing plate (16) arranged at the end of the placement tube (2) and used to seal the opening of the placement tube (2), and a handle (17) is installed on the side of the sealing plate (16).

5. The tapered roller carbonitriding heat treatment device according to claim 1, characterized in that: A spiral plate (5) is arranged inside the placement cylinder (2), and the spiral plate (5) is fixedly mounted on the inner wall of the placement cylinder (2).

6. The tapered roller carbonitriding heat treatment device according to claim 1, characterized in that: A plurality of the communicating holes (4) are provided, and the plurality of communicating holes (4) are distributed on the entire outer side of the placement cylinder (2), and the plurality of communicating holes (4) are all located inside the reaction furnace (1).

7. The tapered roller carbonitriding heat treatment device according to claim 1, characterized in that: A sealed bearing (3) is installed at the connection between the reaction furnace (1) and the placement cylinder (2).

Images