Self-lubricating spherical plain bearing gasket bonding and curing device

Abstract

The present invention provides a self-lubricating spherical plain bearing pad bonding and curing device, which includes a control system 1, a signal processing system 2, a high-temperature chamber 5 and a drive system; the high-temperature chamber 5 includes a box body, a sensor group, a partition plate, a heater 10 and a piston 12. The partition plate, the heater 10, the piston 12 and the sensor group are all arranged inside the box body. The piston 12 is connected to the drive system, and the piston 12 and the inner wall of the box body form a sealed structure. The partition plate and the sensor group are both arranged inside the sealed structure, and a self-lubricating spherical plain bearing sample 8 to be cured is placed on the partition plate; the sensor group, the heater 10, the drive system and the control system 1 are all signal-connected to the signal processing system 2. The structure of the present invention is simple and easy to operate. By using a high-temperature chamber with an air compression system, the controllable operation of the pad curing pressure is realized, the bonding and curing quality of the self-lubricating spherical plain bearing pad is improved, and it can be applied to large-scale production, improving the consistency of the product batch quality.

Description

Technical Field

[0001] The present invention relates to the technical field of self-lubricating spherical plain bearings, and particularly to a self-lubricating spherical plain bearing liner bonding and curing device. Background Technique

[0002] A self-lubricating spherical plain bearing generally consists of an outer ring, an inner ring, and a self-lubricating liner pasted on the inner surface of the outer ring for lubrication. During the manufacturing process of a self-lubricating spherical plain bearing, since the resin used in the self-lubricating liner requires high temperature and high pressure during curing and needs to undergo two curing processes: pre-curing (curing temperature T1) and final curing (curing temperature T2), where the temperature T1 is lower than the temperature T2.

[0003] When pre-curing is carried out, an interference fit is made between a pure PTFE curing mandrel and the outer ring of the self-lubricating spherical plain bearing with an uncured liner bonded to its inner surface. By using the principle that the thermal expansion amount of the PTFE mandrel is much higher than that of the metal outer ring, the pressure curing of the liner is achieved. After pre-curing, the cross-linking degree of the self-lubricating liner resin is low and it has good flexibility, which is convenient for the subsequent interference fit extrusion assembly processing of the outer and inner rings. Therefore, when final curing is carried out, the pressure curing of the self-lubricating liner is achieved through the interference fit of the inner and outer rings.

[0004] The existing self-lubricating spherical plain bearing liner bonding and curing technology has the following disadvantages:

[0005] 1. The PTFE material itself has a creep effect. Therefore, during the bonding and curing process of the self-lubricating spherical plain bearing liner, the mandrel cannot maintain a stable curing pressure for a long time, and there is a risk of dimensional reduction during repeated use.

[0006] 2. When using a PTFE mandrel for curing, since its expansion amount cannot be accurately measured, the pressure during the curing process of the liner cannot be detected and evaluated.

[0007] The patent document with the publication number CN203365296U discloses a device for self-lubricating material curing experiments, which includes a guide rod, a loading circular plate, a limiting circular plate, a nut, a self-lubricating material sample, a cylindrical base block, a polytetrafluoroethylene baffle, etc.; the circular plates all have three uniformly distributed circular holes and form a stacked mechanism that can slide along the guide rod through three guide rods, and both ends of the guide rod are limited by three nuts; in the stacked mechanism, a spring and a sample are respectively placed; the sample includes a polytetrafluoroethylene baffle and a cylindrical base block with a self-lubricating material sample pasted on it; this device can control the pressure magnitude during the curing experiment of the self-lubricating material by adjusting the distance between the baffles on both sides of the spring, with a simple structure, easy to manufacture, high reliability, and strong practicability. However, this device cannot obtain temperature and pressure information in real time and cannot control the temperature and pressure of the self-lubricating spherical plain bearing liner in real time. Summary of the Invention

[0008] In view of the defects in the prior art, the object of the present invention is to provide a self-lubricating spherical plain bearing liner bonding and curing device.

[0009] The self-lubricating spherical plain bearing liner bonding and curing device provided by the present invention includes a control system, a signal processing system, a high-temperature chamber, and a driving system;

[0010] The high-temperature chamber includes a box body, a sensor group, a partition board, a heater, and a piston. The partition board, the heater, the piston, and the sensor group are all arranged inside the box body. The piston is connected to the driving system. The piston and the inner wall of the box body form a sealed structure. The partition board and the sensor group are both arranged inside the sealed structure. The self-lubricating spherical plain bearing sample to be cured is placed on the partition board;

[0011] The sensor group, the heater, the driving system, and the control system are all signal-connected to the signal processing system. The signal processing system can process the signals measured by the sensor group and send them to the control system. The control system can control the heater to heat the self-lubricating spherical plain bearing sample to be cured, and the control system can control the driving system to drive the piston to apply pressure to the self-lubricating spherical plain bearing sample to be cured.

[0012] Preferably, the box body is a vertical cylindrical structure, and a cover plate is arranged at the top of the box body;

[0013] The partition board, the heater, and the piston are arranged inside the box body from top to bottom in sequence. The upper end of the piston, the cover plate, and the inner wall of the box body form a sealed structure. The sensor group is installed on the side wall of the box body.

[0014] Preferably, the box body is a horizontal cylindrical structure, and a cover plate is arranged on one side of the box body;

[0015] The partition board, the heater, and the piston are arranged inside the box body horizontally in sequence. One end of the piston close to the partition board, the cover plate, and the inner wall of the box body form a sealed structure. The sensor group is installed on the side wall of the box body;

[0016] The partition board is horizontally arranged inside the sealed structure.

[0017] Preferably, an exhaust hole is arranged on the cover plate, and a valve is arranged on the exhaust hole;

[0018] The valve includes a mechanical valve, a hydraulic valve, or an electromagnetic valve.

[0019] Preferably, a limit baffle is arranged between the piston and the partition board. The limit baffle is installed on the inner wall of the box body and can limit the position of the piston.

[0020] Preferably, a top column is provided at one end of the piston close to the drive system. The piston and the top column are integrally formed and connected to the hydraulic system through the top column. A through hole with a size matching that of the top column is provided at one end of the box body close to the piston;

[0021] The drive system includes a hydraulic system.

[0022] Preferably, the sensor group includes a temperature sensor and a barometric pressure sensor.

[0023] Preferably, the partition plate includes a mesh partition plate.

[0024] Preferably, the self-lubricating spherical plain bearing sample to be cured includes a self-lubricating liner and an outer bearing ring sleeved outside the self-lubricating liner;

[0025] High-temperature resistant films are attached to both the inner side of the self-lubricating liner and the outer side of the outer bearing ring.

[0026] Preferably, the high-temperature resistant film is made of polyimide or silica gel, and the thickness of the high-temperature resistant film is 0.05 - 0.18 mm.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The structure of the present invention is simple and the operation is convenient. By using a high-temperature box with an air compression system, controllable operation of the liner curing pressure is achieved, the bonding and curing quality of the self-lubricating spherical plain bearing liner is improved, and it can be applied to large-scale production, enhancing the consistency of the product batch quality.

[0029] 2. The present invention adopts the technical means of connecting a control system to a heater and a piston, solves the technical problem of uncontrollable pressure and temperature in the bonding and curing operation of the self-lubricating spherical plain bearing liner, and the pressure received by the self-lubricating spherical plain bearing liner can be made more uniform through air compression by the piston.

[0030] 3. The present invention adopts the technical means of providing an exhaust hole with a valve on the cover plate, ensuring the pressure stability in the closed structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] By reading the following detailed description of the non-restrictive embodiments with reference to the accompanying drawings, other features, purposes and advantages of the present invention will become more obvious:

[0032] Figure 1 is a schematic structural diagram of the present invention;

[0033] Figure 2 is a schematic structural diagram of the self-lubricating spherical plain bearing sample to be cured in the present invention;

[0034] As shown in the figure:

[0035] Control system 1, outer ring of bearing 81

[0036] Signal processing system 2, self-lubricating gasket 82

[0037] Temperature sensor 3, high-temperature resistant film 83

[0038] Air pressure sensor 4, mesh partition 9

[0039] High-temperature chamber 5, heater 10

[0040] Exhaust hole 6, limit baffle 11

[0041] Cover plate 7, piston 12

[0042] Self-lubricating spherical plain bearing sample to be cured 8, hydraulic system 13 Specific implementation mode

[0043] The present invention will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several changes and improvements can be made. These all belong to the protection scope of the present invention.

[0044] The present invention discloses a self-lubricating spherical plain bearing gasket bonding and curing device, which uses a high-temperature chamber with an air compression system, realizes the controllable operation of the gasket curing pressure, improves the bonding and curing quality of the self-lubricating spherical plain bearing gasket, and can be applied to large-scale production, improving the consistency of the product batch quality.

[0045] According to the self-lubricating spherical plain bearing gasket bonding and curing device provided by the present invention, it includes a control system 1, a signal processing system 2, a high-temperature chamber 5 and a driving system; the high-temperature chamber 5 includes a box body, a sensor group, a partition, a heater 10 and a piston 12, the partition, the heater 10, the piston 12 and the sensor group are all arranged inside the box body, the piston 12 is connected to the driving system, the piston 12 and the inner wall of the box body form a sealed structure, the partition and the sensor group are both arranged inside the sealed structure, and a self-lubricating spherical plain bearing sample 8 to be cured is placed on the partition; the sensor group, the heater 10, the driving system and the control system 1 are all signal-connected to the signal processing system 2, the signal processing system 2 can process the signals measured by the sensor group and send them to the control system 1, the control system 1 can control the heater 10 to heat the self-lubricating spherical plain bearing sample 8 to be cured, and the control system 1 can control the driving system to drive the piston 12 to apply pressure to the self-lubricating spherical plain bearing sample 8 to be cured.

[0046] A cover plate 7 is provided at the top of the box body. An exhaust hole 6 is provided on the cover plate 7, and a valve is provided on the exhaust hole 6; the valve includes a mechanical valve, a hydraulic valve or an electromagnetic valve. A limit baffle 11 is provided between the piston 12 and the partition plate. The limit baffle 11 is installed on the inner wall of the box body and can limit the position of the piston 12. A top column is provided at one end of the piston 12 close to the drive system. The piston 12 and the top column are integrally formed and connected to the hydraulic system 13 through the top column. A through hole with a size matching that of the top column is provided at one end of the box body close to the piston 12; the drive system includes the hydraulic system 13. The sensor group includes a temperature sensor 3 and a pressure sensor 4. The partition plate includes a mesh partition plate 9. The self-lubricating joint bearing sample 8 to be cured includes a self-lubricating gasket 82 and a bearing outer ring 81 sleeved outside the self-lubricating gasket 82; high-temperature films 83 are attached to the inner side of the self-lubricating gasket 82 and the outer side of the bearing outer ring 81. The high-temperature film 83 is made of polyimide or silica gel, and the thickness of the high-temperature film 83 is 0.05 - 0.18 mm. The self-lubricating joint bearing sample 8 to be cured includes a self-lubricating joint outer ring blank to be pre-cured or a self-lubricating joint bearing to be finally cured.

[0047] Embodiment 1

[0048] This embodiment provides a self-lubricating joint bearing gasket bonding and curing device with a vertical structure, including a control system 1, a signal processing system 2, a high-temperature box 5, and a hydraulic system 13. The high-temperature box 5 is arranged in a vertical structure and is sequentially composed of an exhaust hole 6, a cover plate 7, a temperature sensor 3, a pressure sensor 4, a mesh partition plate 9, a heater 10, a limit baffle 11, and a piston 12 from top to bottom. The temperature sensor 3, the pressure sensor 4, the heater 10, the hydraulic system 13, the control system 1, and the signal processing system are connected through data lines. The piston (12) and the hydraulic system 13 are connected through a top column. The valve on the exhaust hole 6 is mechanical, and the high-temperature film used is a polyimide film material with a thickness of 0.05 mm.

[0049] When performing the pre-curing operation, after the system is powered on, the temperature sensor 3 and the air pressure sensor 4 start to work. The cover plate 7 is opened, and the piston 12 resets to the lower limit position of the high-temperature chamber 5. The outer ring blank with the gasket to be cured attached, sealed with a high-temperature resistant film 83, is placed on the mesh partition 9. The cover plate 7 is covered and locked, and the valve on the exhaust hole 6 is manually closed. The hydraulic system 13 provides power to compress the piston 12 upward. When the air pressure in the chamber reaches the set value P1, the hydraulic system 13 pauses to provide power. Subsequently, the heater 10 starts to work. When the temperature in the chamber reaches the set value T1, heat preservation is carried out for 1 - 2 hours. After the pre-curing is completed, the hydraulic system 13 stops providing upward power to the piston 12, and the heater 10 stops working. The valve on the exhaust hole 6 is manually opened. When the air pressure in the chamber returns to the atmospheric pressure value, the hydraulic system 13 provides power to reset the piston 12 to the lower limit position of the high-temperature chamber 5. When the temperature in the chamber returns to room temperature, the cover plate 7 is opened, and the pre-cured sample is taken out.

[0050] Example 2

[0051] This embodiment provides a self-lubricating spherical plain bearing gasket bonding and curing device with a horizontal structure, including a control system 1, a signal processing system 2, a high-temperature chamber 5, and a hydraulic system 13. The high-temperature chamber 5 is set in a horizontal structure and consists of an exhaust hole 6, a cover plate 7, a temperature sensor 3, an air pressure sensor 4, a mesh partition 9, a heater 10, a limit baffle 11, and a piston 12 from left to right in sequence. The temperature sensor 3, the air pressure sensor 4, the heater 10, the hydraulic system 13, the control system 1, and the signal processing system are connected through data lines. The piston (12) and the hydraulic system 13 are connected through a top column. The valve on the exhaust hole 6 is electromagnetic and is controlled by the control system 1 through a program.

[0052] When performing the final curing operation, after the system is powered on, the temperature sensor 3 and the air pressure sensor 4 start to work. The cover plate 7 is opened, and the piston 12 resets to the lower limit position of the high-temperature chamber 5. The self-lubricating spherical plain bearing to be finally cured is placed on the mesh partition 9. The cover plate 7 is covered. When it is locked to the preset position, the program automatically closes the valve on the exhaust hole 6. The hydraulic system 13 provides power to compress the piston 12 upward. When the air pressure in the chamber reaches the set value P2, the hydraulic system 13 pauses to provide power. Subsequently, the heater 10 starts to work. When the temperature in the chamber reaches the set value T2, heat preservation is carried out for 2 - 6 hours. After the final curing is completed, the hydraulic system 13 stops providing upward power to the piston 12, and the heater 10 stops working. The program is set to automatically open the valve on the exhaust hole 6. When the air pressure in the chamber returns to the atmospheric pressure value, the hydraulic system 13 provides power to reset the piston 12 to the lower limit position of the high-temperature chamber 5. When the temperature in the chamber returns to room temperature, the cover plate 7 is opened, and the finally cured sample is taken out.

[0053] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0054] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. Without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A self-lubricating spherical plain bearing liner bonding and curing device, characterized in that It includes a control system (1), a signal processing system (2), a high-temperature box (5), and a drive system; The high-temperature box (5) includes a box body, a sensor group, a partition board, a heater (10), and a piston (12). The partition board, the heater (10), the piston (12), and the sensor group are all arranged inside the box body. The piston (12) is connected to the drive system. The piston (12) and the inner wall of the box body form a sealed structure. The partition board and the sensor group are both arranged inside the sealed structure. A self-lubricating joint bearing sample (8) to be cured is placed on the partition board; The sensor group, the heater (10), the drive system, and the control system (1) are all signal-connected to the signal processing system (2). The signal processing system (2) can process the signals measured by the sensor group and send them to the control system (1). The control system (1) can control the heater (10) to heat the self-lubricating joint bearing sample (8) to be cured. The control system (1) can control the drive system to drive the piston (12) to pressurize the self-lubricating joint bearing sample (8) to be cured; The box body is a vertical cylindrical structure. A cover plate (7) is arranged at the top of the box body. The partition board, the heater (10), and the piston (12) are arranged inside the box body from top to bottom in sequence. The upper end of the piston (12), the cover plate (7), and the inner wall of the box body form a sealed structure. The sensor group is installed on the side wall of the box body; Or, the box body is a horizontal cylindrical structure. A cover plate (7) is arranged on one side of the box body. The partition board, the heater (10), and the piston (12) are arranged inside the box body horizontally in sequence. One end of the piston (12) close to the partition board, the cover plate (7), and the inner wall of the box body form a sealed structure. The sensor group is installed on the side wall of the box body. The partition board is horizontally arranged inside the sealed structure; An exhaust hole (6) is arranged on the cover plate (7), and a valve is arranged on the exhaust hole (6); The valve includes a mechanical valve, a hydraulic valve, or an electromagnetic valve; A limit baffle (11) is arranged between the piston (12) and the partition board. The limit baffle (11) is installed on the inner wall of the box body and can limit the position of the piston (12).

2. The self-lubricating spherical plain bearing liner bonding and curing device according to claim 1, characterized in that A top column is arranged at one end of the piston (12) close to the drive system. The piston (12) and the top column are integrally formed and are connected to a hydraulic system (13) through the top column. A through hole with a size matching that of the top column is arranged at one end of the box body close to the piston (12); The drive system includes a hydraulic system (13).

3. The self-lubricating spherical plain bearing pad bonding and curing device according to claim 1, characterized in that The sensor group includes a temperature sensor (3) and a pressure sensor (4).

4. The self-lubricating spherical plain bearing liner bonding and curing device according to claim 1, characterized in that, The partition board includes a mesh partition board (9).

5. The self-lubricating spherical plain bearing liner bonding and curing device according to claim 1, characterized in that, The self-lubricating joint bearing sample (8) to be cured includes a self-lubricating gasket (82) and a bearing outer ring (81) sleeved outside the self-lubricating gasket (82); High-temperature resistant films (83) are attached to the inner side of the self-lubricating gasket (82) and the outer side of the bearing outer ring (81).

6. The self-lubricating spherical plain bearing liner bonding and curing device according to claim 5, characterized in that, The high-temperature resistant film (83) is made of polyimide or silica gel, and the thickness of the high-temperature resistant film (83) is 0.05 - 0.18 mm.

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