Bidirectional press-fitting equipment for oil-retaining bearing of speed reduction shell of wiper motor

Abstract

The utility model discloses bidirectional press-fitting equipment for an oil-retaining bearing of a speed reduction shell of a wiper motor, belongs to the technical field of wiper motors, and solves the problem of low assembly efficiency of the oil-retaining bearing of the speed reduction shell of the existing wiper motor. The device comprises a working platform, a first press machine and a second press machine which are electrically connected with a controller are arranged above and below the working platform correspondingly, and a pressing head and a pressing rod are movably arranged on the first press machine and the second press machine in the same vertical line direction correspondingly; a fixing seat which is fixed on the working platform and is used for mounting a speed reduction shell of the wiper motor is arranged under the pressure head; and the pressure head and the pressure rod respectively apply pressure to the top surface and the bottom surface of the oil bearing so as to press the oil bearing in a bearing mounting opening of the speed reducing shell of the scraping motor. Manual press fitting is replaced by mechanical automation, so that the assembly efficiency is remarkably improved, and the labor intensity is reduced. And the top face and the bottom face of the oil bearing are pressed through the first press machine and the second press machine which are arranged up and down correspondingly, two-way synchronous press fitting is achieved, it is guaranteed that the bearing is evenly stressed, and the assembling quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of wiper motor technology, specifically to a bidirectional press-fitting device for an oil-impregnated bearing in a wiper motor reduction housing. Background Technology

[0002] As the core drive component of a car's windshield wiper system, the performance of the wiper motor directly affects the efficiency and reliability of the wipers. In the design of a wiper motor, the reduction gear mechanism is the key part that converts the motor's high-speed rotation into low-speed, high-torque output, and the reduction housing is the important carrier of this mechanism. To ensure the smooth operation and long-term durability of the reduction gear mechanism, oil-impregnated bearings are widely used in the reduction housing.

[0003] Oil-impregnated bearings are self-lubricating bearings containing lubricating oil that automatically releases during operation, reducing friction and wear, thereby improving bearing life and operating efficiency. Currently, the assembly of oil-impregnated bearings in wiper motor reducer housings is often done manually, with workers manually placing and riveting the bearings. This method is inefficient and labor-intensive. Utility Model Content

[0004] To address the aforementioned problems in the prior art, this utility model provides a bidirectional press-fitting device for oil-impregnated bearings in wiper motor gearboxes, which solves the problem of low assembly efficiency in existing wiper motor gearbox oil-impregnated bearing assembly.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A bidirectional press-fitting device for an oil-impregnated bearing in a wiper motor reducer housing is provided. The device includes a work platform, with a first press and a second press, both electrically connected to a controller, positioned above and below the work platform. A press head and a press rod are respectively movable along the same vertical direction on the first and second presses. A mounting base, fixed to the work platform and used for installing the wiper motor reducer housing, is positioned directly below the press head. The press head and the press rod apply pressure to the top and bottom surfaces of the oil-impregnated bearing, respectively, to press the bearing into the bearing mounting opening of the wiper motor reducer housing.

[0007] In this solution, mechanical automation replaces manual pressing, significantly improving assembly efficiency and reducing labor intensity. Furthermore, by using a first and second press positioned vertically to apply pressure to the top and bottom surfaces of the oil-impregnated bearing respectively, bidirectional synchronous pressing is achieved, avoiding the instability of manual operation. This also ensures uniform bearing stress, preventing misalignment or damage caused by unilateral pressing, and improving assembly quality.

[0008] Furthermore, the work platform is equipped with two symmetrical fixing rods located on both sides of the fixed base. Each fixing rod is fitted with a sleeve, and each sleeve is equipped with a photoelectric transmitting sensor and a photoelectric receiving sensor, both electrically connected to the controller. The photoelectric transmitting and receiving sensors can detect whether a wiper motor reduction housing is placed on the fixed base.

[0009] Furthermore, the main body of the first press is equipped with two side baffles located on both sides of the fixed base. The side baffles form a physical barrier to protect the safety of the operators.

[0010] Furthermore, a safety light curtain receiver is embedded on the outside of the fixed base within the work platform. A safety light curtain transmitter, horizontally fixed to the first press, is positioned directly above the receiver. Both the transmitter and receiver are electrically connected to the controller. The safety light curtain transmitter and receiver immediately shut off equipment operation when the operator's hands enter the hazardous area, preventing mechanical injury, complying with industrial safety standards, and reducing the risk of workplace injuries.

[0011] Furthermore, two button boxes are installed on the side of the work platform, both of which are electrically connected to the controller. The button boxes facilitate the starting and stopping of the first and second presses.

[0012] Furthermore, the mounting base includes a base plate and a base fixed to the base plate. The base has an inverted U-shaped structure, and a positioning post for positioning the bearing mounting port is provided in the center of the top surface of the base. A through hole is opened in the center of the positioning post, penetrating the base and the base plate. The top end of the pressure rod passes through the through hole and the bearing mounting port in sequence and contacts the bottom of the oil-impregnated bearing. The positioning post facilitates the positioning of the wiper motor reduction housing.

[0013] Furthermore, the second press is fixed on the cylinder mounting base, which is fixed on the work platform. A guide sleeve is fixed between the cylinder mounting base and the work platform, and the pressure rod is slidably disposed within the guide sleeve. The guide sleeve constrains the movement trajectory of the pressure rod, eliminates lateral offset, ensures that the pressure rod applies force perpendicularly to the bottom surface of the bearing, improves the straightness of the pressing process, and extends the service life of the equipment.

[0014] Furthermore, the cylinder of the second press is equipped with a first magnetic sensor and a second magnetic sensor for limiting the stroke of the pressure rod. Both the first and second magnetic sensors are electrically connected to the controller. The first and second magnetic sensors facilitate the control of the upper and lower limits of the pressure rod stroke, preventing insufficient or excessive pressure, ensuring consistency of pressing parameters for each operation, and adapting to the needs of mass production.

[0015] Furthermore, the first press and the second press are a C-type servo press and a cylinder connected to the air tank, respectively. The C-type servo press provides high-precision controllable pressure, which facilitates stroke control; the pneumatic cylinder is low-cost and fast-responding, meeting the pressure requirements of the bottom foundation. The combination of the two balances performance and cost-effectiveness.

[0016] Furthermore, an electrical cabinet is installed at the bottom of the work platform, and the controller is fixed inside the cabinet. The electrical cabinet integrates the controller and wiring, realizing a modular layout, which facilitates equipment maintenance and troubleshooting. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of a bidirectional press-fitting device;

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 Axonometric drawing of the wiper motor reduction housing removed from the bidirectional press fitting equipment;

[0020] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0021] Figure 5 This is a front view of the bidirectional press-fitting equipment;

[0022] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0023] The components are as follows: 100, working platform; 11, fixed rod; 12, clamp; 13, safety light curtain receiver; 14, button box; 15, electrical cabinet; 200, fixed base; 20, wiper motor reduction housing; 21, base plate; 22, base; 23, positioning column; 300, first press; 31, pressure head; 32, side baffle; 33, safety light curtain transmitter; 400, second press; 41, pressure rod; 42, cylinder mounting base; 43, guide sleeve. Detailed Implementation

[0024] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All utility model creations utilizing the concept of this utility model are within the scope of protection.

[0025] In existing technologies, manual riveting of oil-impregnated bearings is commonly used, resulting in low assembly efficiency and high labor intensity. To address this issue, this application provides a bidirectional press-fitting device for oil-impregnated bearings in wiper motor reduction housing 20. A first press 300 and a second press 400 are respectively installed above and below the fixed base 200 of the wiper motor reduction housing 20. By applying pressure to the top and bottom surfaces of the oil-impregnated bearings respectively through the first press 300 and the second press 400, bidirectional synchronous press-fitting is achieved. This not only significantly improves assembly efficiency and reduces labor intensity but also avoids the instability of manual operation. At the same time, it ensures uniform bearing force, prevents misalignment or damage caused by unilateral press-fitting, and improves assembly quality.

[0026] refer to Figure 1 and Figure 3 A bidirectional press-fitting device for a wiper motor reducer housing 20 with an oil-impregnated bearing includes a work platform 100, an electrical cabinet 15 at the bottom of the work platform 100, and a controller fixed inside the electrical cabinet 15. The electrical cabinet 15 integrates the controller and wiring, achieving a modular layout that facilitates equipment maintenance and troubleshooting.

[0027] refer to Figure 1 , Figure 5 and Figure 6 Above and below the work platform 100 are respectively a first press 300 and a second press 400, both electrically connected to the controller. The first press 300 and the second press 400 are respectively movable along the same vertical direction with a pressure head 31 and a pressure rod 41. A fixed seat 200 fixed on the work platform 100 is set directly below the pressure head 31. In use, a wiper motor reduction housing 20 is installed on the fixed seat 200. An oil-impregnated bearing is placed on the bearing mounting port of the wiper motor reduction housing 20. The top and bottom surfaces of the oil-impregnated bearing are pressed into the bearing mounting port under the pressure of the pressure head 31 and the pressure rod 41.

[0028] In this embodiment, the controller is preferably a PLC. The first press 300 and the second press 400 are a C-type servo press and a cylinder connected to the air tank, respectively. The C-type servo press provides high-precision controllable pressure, which facilitates stroke control. Since the C-type servo press is existing technology, its specific working principle and connection relationship will not be elaborated upon in this embodiment. The pneumatic cylinder is low-cost and has a fast response, meeting the pressure requirements of the bottom foundation. The combination of the two balances performance and cost-effectiveness.

[0029] For the specific structure of the mounting base 200, please refer to Figure 4The mounting base 200 includes a base plate 21 and a base 22 fixed on the base plate 21. The base 22 has an inverted U-shaped structure, and a positioning post 23 for positioning the bearing mounting port is provided in the center of the top surface of the base 22. A through hole is opened in the center of the positioning post 23, penetrating the base 22 and the base plate 21. The top end of the pressure rod 41 passes through the through hole and the bearing mounting port in sequence and contacts the bottom of the oil-impregnated bearing. The positioning post 23 facilitates the positioning of the wiper motor reduction housing 20.

[0030] The second press 400 is fixed on the cylinder mounting base 42, which is fixed on the working platform 100. A guide sleeve 43 is fixed between the cylinder mounting base 42 and the working platform 100. The pressure rod 41 is slidably disposed within the guide sleeve 43. The guide sleeve 43 constrains the movement trajectory of the pressure rod 41, eliminates lateral offset, ensures that the pressure rod 41 applies force perpendicularly to the bearing bottom surface, improves the straightness of the pressing, and extends the service life of the equipment.

[0031] To facilitate the detection of whether a wiper motor reduction housing 20 is placed on the fixed base 200 set on the working platform 100, two fixed rods 11 are symmetrically located on both sides of the fixed base 200. Each of the two fixed rods 11 is fitted with a sleeve 12, and each of the two sleeves 12 is respectively equipped with a photoelectric transmitting sensor and a photoelectric receiving sensor that are electrically connected to the controller.

[0032] To reduce the risk of workplace injuries, refer to Figure 2 The main body of the first press 300 is equipped with two side baffles 32 located on both sides of the fixed base 200. A safety light curtain receiver 13 is embedded in the work platform 100 outside the fixed base 200. A safety light curtain transmitter 33 is horizontally fixed to the first press 300 directly above the safety light curtain receiver 13. Both the safety light curtain transmitter 33 and the safety light curtain receiver 13 are electrically connected to the controller. The safety light curtain transmitter 33 and the safety light curtain receiver 13 immediately shut down the equipment when the operator's hand enters the danger zone to prevent mechanical injury.

[0033] For ease of operation, two button boxes 14 are provided on the side of the work platform 100, and both button boxes 14 are electrically connected to the controller. The button boxes 14 facilitate the starting and stopping of the first press 300 and the second press 400.

[0034] To prevent insufficient or excessive pressure and ensure consistent pressing parameters each time, the cylinder of the second press 400 is equipped with a first magnetic sensor and a second magnetic sensor to limit the stroke of the pressure rod 41. Both the first and second magnetic sensors are electrically connected to the controller. The first and second magnetic sensors can detect the piston position in the second press 400, and both the first and second magnetic sensors can be of model DMSG-020.

[0035] Although the specific embodiments of the utility model have been described in detail with reference to the accompanying drawings, this should not be construed as limiting the scope of protection of this patent. Various modifications and variations that can be made by those skilled in the art without inventive effort within the scope described in the claims still fall within the scope of protection of this patent.

Claims

1. A two-way press fitting device for a wiper motor reduction housing oil-impregnated bearing, characterized in that, The utility model provides a rain -proof wiper motor reduction casing press -fitting device, including work platform (100), the upside and downside of work platform (100) are provided with first press (300) and second press (400) respectively, first press (300) and second press (400) are provided with pressure head (31) and pressure rod (41) respectively along the same vertical line direction, the positive downside of pressure head (31) is provided with fixed seat (200) for installing rain -proof wiper motor reduction casing (20) and is fixed on work platform (100), pressure head (31) and pressure rod (41) press respectively the top surface and bottom surface of oil -containing bearing to press -fit oil -containing bearing in bearing installation port of wiper motor reduction casing (20).

2. The wiper motor reduction housing oil-impregnated bearing bi-directional press device of claim 1, wherein, Two fixed rods (11) are arranged on the work platform (100) and symmetrically located on both sides of the fixed seat (200), and two cladding sleeves (12) are sleeved on the two fixed rods (11), and photoelectric emission sensors and photoelectric receiving sensors, both electrically connected to the controller, are arranged on the two cladding sleeves (12) respectively.

3. The apparatus of claim 1, wherein, Two side baffles (32) are arranged on the main body of the first press (300) and located on both sides of the fixed seat (200) respectively.

4. The apparatus of claim 1, wherein, A safety grating receiving end (13) is embedded on the outside of the fixed seat (200) in the work platform (100), a safety grating transmitting end (33) is horizontally fixed on the first press (300) above the safety grating receiving end (13), and the safety grating transmitting end (33) and the safety grating receiving end (13) are electrically connected to the controller.

5. The apparatus of claim 1, wherein, Two button boxes (14) are arranged on the side surface of the work platform (100), and the two button boxes (14) are electrically connected to the controller.

6. The apparatus of claim 1, wherein, The fixed seat (200) comprises a bottom plate (21) and a base (22) fixed on the bottom plate (21), the base (22) is in an inverted U-shaped structure, a positioning column (23) for positioning the bearing installation port is arranged on the top surface of the middle part of the base (22), a through hole penetrating through the base (22) and the bottom plate (21) is formed in the middle part of the positioning column (23), and the top end of the pressure rod (41) sequentially penetrates through the through hole and the bearing installation port and contacts the bottom of the oil-containing bearing.

7. The apparatus of claim 6, wherein, The second press (400) is fixed on a cylinder mounting seat (42), the cylinder mounting seat (42) is fixed on the work platform (100), a guide sleeve (43) is fixed between the cylinder mounting seat (42) and the work platform (100), and the pressure rod (41) is slidingly arranged in the guide sleeve (43).

8. The apparatus of claim 6, wherein, First and second magnetic sensors for limiting the stroke of the pressure rod (41) are arranged on the cylinder body of the second press (400), and the first and second magnetic sensors are electrically connected to the controller.

9. The apparatus of claim 1, wherein, The first press (300) and the second press (400) are a C-shaped servo press and a cylinder in communication with a gas tank respectively.

10. The apparatus of claim 1, wherein, The bottom of the working platform (100) is provided with an electric appliance cabinet (15), and the controller is fixed in the electric appliance cabinet (15).

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