Die for pressing bearing on end cover of motor

Abstract

The utility model discloses a die for a motor end cover pressing bearing, and relates to the technical field of end cover pressing bearings. The device comprises a working table, a supporting plate is fixedly installed on the upper surface of the working table, a downward pressing mechanism is jointly arranged in the supporting plate and on the upper surface of the supporting plate, a mounting groove is formed in the working table, and a positioning mechanism is jointly arranged in the mounting groove and on the upper surface of the working table. According to the end cover pressing device, the end cover can be conveniently positioned during assembly, displacement of the end cover during bearing pressing is avoided, so that the bearing can be accurately placed at a preset position, and the assembly effect is improved, the depth and the position of the bearing pressed into the end cover can be accurately controlled through the downward pressing mechanism and the lead screw sliding block structure, and compared with an air cylinder and other transmission modes, the assembly efficiency is improved. According to the structure, the assembly precision of the end cover and the bearing can be guaranteed more easily, so that the bearing press-fitting quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of end cap pressure bearing technology, specifically a mold for an electric motor end cap pressure bearing. Background Technology

[0002] Electric motors, as devices that convert electrical energy into mechanical energy, are widely used in various fields such as industry, agriculture, transportation, national defense, and daily life. With the continuous development of various industries, higher and higher requirements are being placed on the performance, quality, and production efficiency of electric motors. In the production process of electric motors, the assembly of the end cover and the bearing is a key link. Its assembly quality directly affects the operating stability, reliability, and service life of the electric motor. In order to improve the production quality and efficiency of electric motors, it is necessary to develop a high-efficiency and precise mold for pressing the bearing with the end cover of the electric motor to achieve rapid and accurate assembly of the end cover and the bearing.

[0003] However, existing molds for motor end cover bearings still have some problems in use:

[0004] First, the lack of a structure for positioning the end cover when assembling the bearing on the end cover makes it easy for the end cover to shift when pressing the bearing, thus preventing the bearing from being accurately placed in the predetermined position and reducing the assembly effect.

[0005] Secondly, the assembly of the end cover and bearing of traditional motors is mostly done by pressing down with a cylinder. This method makes it difficult to guarantee assembly accuracy, which can easily lead to improper bearing installation or deformation of the end cover. Utility Model Content

[0006] In order to solve the problem that the existing molds for pressing bearings with motor end caps lack a structure for positioning the end cap and the method of pressing down with a cylinder makes it difficult to guarantee assembly accuracy, the purpose of this utility model is to provide a mold for pressing bearings with motor end caps.

[0007] To solve the above technical problems, this utility model adopts the following technical solution: a mold for pressing bearings with motor end caps, including a worktable, a support plate fixedly installed on the upper surface of the worktable, and a pressing mechanism jointly provided inside and on the upper surface of the support plate. The pressing mechanism enables more precise pressing of the bearing, improving the pressing quality of the bearing. An installation groove is provided inside the worktable, and a positioning mechanism is jointly provided inside the installation groove and on the upper surface of the worktable. The positioning mechanism can position the end cap, preventing displacement of the end cap during bearing pressing, ensuring that the bearing is accurately placed in the predetermined position, and improving the assembly effect. The positioning mechanism includes a cylinder. The cylinder is fixedly installed in the mounting slot. As a power source, the cylinder can precisely control the output force. A movable plate is fixedly connected to the output end of the cylinder. When the cylinder is started, it pushes the movable plate to move. A pull rod is symmetrically hinged to the upper surface of the movable plate through a rotating shaft. A connecting plate is hinged to the upper surface of the pull rod through a rotating shaft. A movable rod is fixedly connected to the upper surface of the connecting plate. The top end of the movable rod passes through the mounting slot and is fixedly connected to a positioning plate. Through the transmission of the pull rod, connecting plate, and movable rod, the positioning plate is driven to move. The positioning plate can position the end cover placed on the worktable, effectively preventing the end cover from shifting during the press-fitting of the bearing, ensuring the accuracy of the bearing installation position, and improving the assembly effect.

[0008] Preferably, the pressing mechanism includes a DC motor, which is fixedly mounted on the upper surface of the support plate. The DC motor provides stable power, and its output end passes through the support plate and is fixedly connected to a lead screw. The output end of the DC motor drives the lead screw to rotate. A slider is threaded onto the outer surface of the lead screw, and the threaded engagement between the lead screw and the slider allows for precise control of the slider's movement distance and speed. A connecting rod is fixedly connected to one side of the slider, and a pressing head body is fixedly connected to the lower surface of the connecting rod. Through the connection between the connecting rod and the pressing head body, the pressing head body can accurately press the bearing into the end cover. Compared with traditional transmission methods such as cylinders, this method better ensures the assembly accuracy of the end cover and the bearing, and improves the quality of bearing press-fitting.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] 1. This application uses a positioning mechanism to facilitate the positioning of the end cover during assembly, preventing displacement of the end cover when pressing the bearing, thereby ensuring that the bearing can be accurately placed in the predetermined position and improving the assembly effect;

[0011] 2. This application uses a pressing mechanism and a screw-slider structure to precisely control the depth and position of the bearing pressed into the end cover. Compared with transmission methods such as cylinders, this structure makes it easier to ensure the assembly accuracy of the end cover and the bearing, thereby improving the quality of bearing pressing. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the cross-sectional structure of the positioning mechanism of this utility model.

[0015] Figure 3 This is a schematic diagram of the pressing mechanism of this utility model.

[0016] In the diagram: 1. Workbench; 2. Positioning mechanism; 21. Positioning plate; 22. Moving rod; 23. Guide bar; 24. Connecting plate; 25. Pull rod; 26. Moving plate; 27. Cylinder; 28. Guide groove; 3. Pressing mechanism; 31. Connecting rod; 32. Pressing head body; 33. Vertical groove; 34. Lead screw; 35. Slider; 36. DC motor; 4. Mounting groove; 5. Support plate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example: Figure 1-3 As shown, this utility model provides a mold for pressing bearings with motor end caps, including a worktable 1, a support plate 5, a pressing mechanism 3, an mounting groove 4, and a positioning mechanism 2. The worktable 1 provides a stable support foundation for the entire mold, ensuring the stability of the mold during the pressing process. The support plate 5 is fixedly installed on the upper surface of the worktable 1 and is used to install components such as the pressing mechanism 3, ensuring a reasonable layout of the mold components. The pressing mechanism 3 achieves the effect of precisely pressing the bearing, ensuring the quality of bearing pressing. The mounting groove 4 is opened inside the worktable 1, providing installation space for the positioning mechanism 2. The positioning mechanism 2 can effectively position the end cap, preventing displacement of the end cap during bearing pressing, ensuring that the bearing can be accurately installed in the predetermined position, and improving the assembly effect.

[0019] The positioning mechanism 2 includes a cylinder 27, a moving plate 26, a pull rod 25, a connecting plate 24, a moving rod 22, a positioning plate 21, a guide groove 28, and a guide strip 23. The cylinder 27 is fixedly installed in the mounting groove 4 and serves as the power source for the positioning mechanism 2. It can accurately control the output force and provide stable power for the positioning operation. The moving plate 26 is fixedly connected to the output end of the cylinder 27 and moves under the push of the cylinder 27.

[0020] The pull rod 25 is symmetrically hinged to the upper surface of the moving plate 26 via a pivot axis, which converts the linear motion of the moving plate 26 into a pulling force in a specific direction. The connecting plate 24 is hinged to the upper surface of the pull rod 25 via a pivot axis, which further transmits the motion. The top end of the moving rod 22 passes through the mounting groove 4 and is fixedly connected to the lower surface of the positioning plate 21, which ultimately drives the positioning plate 21 to move towards or away from each other.

[0021] The positioning plate 21 has an arc-shaped cross-section that fits the contour of the end cap, enabling better positioning of the end cap. The positioning plate 21 is also an anti-slip plate, which increases the friction between the positioning plate and the end cap and prevents the end cap from sliding. Its lower surface is slidably connected to the worktable 1 to ensure the stability of the positioning process.

[0022] The guide groove 28 is formed on the upper surface of the worktable 1 and is used in conjunction with the moving rod 22. The moving rod 22 is slidably connected to the guide groove 28, which guides the movement of the moving rod 22 and ensures the accuracy of the movement of the positioning plate 21. The guide strip 23 is fixedly installed in the inner cavity of the mounting groove 4 and is used in conjunction with the moving rod 22. The moving rod 22 is slidably sleeved on the outer surface of the guide strip 23, which further assists the moving rod 22 to move stably and improves the reliability of the positioning mechanism 2.

[0023] The pressing mechanism 3 includes a DC motor 36, a lead screw 34, a slider 35, a connecting rod 31, a pressing head body 32, and a vertical groove 33. The DC motor 36 is fixedly installed on the upper surface of the support plate 5 to provide stable power for the pressing mechanism 3.

[0024] The lead screw 34 is fixedly connected to the output end of the DC motor 36 and its bottom end passes through the support plate 5. The DC motor 36 drives the lead screw 34 to rotate. The slider 35 is threaded on the outer surface of the lead screw 34. Linear movement is achieved by rotating the lead screw 34. Compared with other transmission methods, it can more accurately control the movement distance and speed.

[0025] The connecting rod 31 is fixedly connected to one side of the slider 35, transmitting the movement of the slider 35 to the pressure head body 32. The pressure head body 32 is an elastic pressure head, fixedly connected to the lower surface of the connecting rod 31. When pressing the bearing, the elastic pressure head can buffer the pressure, avoid damage to the bearing and end cap, and improve the pressing quality.

[0026] The vertical groove 33 is formed on one side of the support plate 5 to work with the lead screw 34 and the slider 35. The bottom end of the lead screw 34 is rotatably connected to the vertical groove 33, and the slider 35 is slidably connected to the vertical groove 33. The vertical groove 33 provides guidance and limit for the movement of the lead screw 34 and the slider 35. The cross-sectional shape of both the slider 35 and the vertical groove 33 is cross-shaped, which increases the stability of the slider 35 sliding in the vertical groove 33, prevents the slider 35 from deviating during the movement, and ensures the accuracy of the pressing operation.

[0027] Working principle: First, the motor end cover is placed on the workbench 1. Then, the positioning mechanism 2 starts to work. After the cylinder 27 starts, its output end pushes the movable plate 26, which is fixedly connected to it, to move horizontally in the mounting groove 4.

[0028] The pull rods 25, which are symmetrically hinged to the upper surface of the movable plate 26, change their direction of motion through the rotating shaft as the movable plate 26 moves, converting the horizontal motion into an upward pulling force, which is then transmitted to the connecting plate 24. Under the pulling force of the pull rods 25, the connecting plate 24 drives the movable rod 22, which is fixedly connected to it, to move relative to or away from each other.

[0029] The cooperation between the guide groove 28 and the guide strip 23 ensures the stability of the movement of the moving rod 22. The movement of the moving rod 22 drives the positioning plate 21 to move. The positioning plate 21 has an arc-shaped cross section and is an anti-slip plate. It fits the contour of the end cover and increases the friction between it and the end cover, thus stabilizing the end cover in position.

[0030] Once the end cap is positioned, place the bearing to be pressed on the end cap in the appropriate position, and the pressing mechanism 3 will begin to work.

[0031] When the DC motor 36 starts, its output drives the lead screw 34, which is fixedly connected to it, to rotate. Under the rotation of the lead screw 34, the slider 35 moves linearly along the axis of the lead screw 34. The vertical groove 33 guides and limits the rotation of the lead screw 34 and the movement of the slider 35.

[0032] The movement of slider 35 drives the connecting rod 31 to move, which in turn drives the pressure head body 32, which is fixedly connected to the lower surface of the connecting rod 31, to move downward. Since the pressure head body 32 is an elastic pressure head, it can effectively buffer the pressure during the contact with the bearing and pressing process, avoiding damage to the bearing and end cover. The pressure head body 32 continues to press down, accurately pressing the bearing into the predetermined position of the end cover, thus completing the entire operation of pressing the bearing into the motor end cover.

[0033] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A mold for pressing bearings on the end cover of an electric motor, comprising a worktable (1), characterized in that: A support plate (5) is fixedly installed on the upper surface of the workbench (1). A pressing mechanism (3) is provided in the interior and on the upper surface of the support plate (5). An installation groove (4) is provided inside the workbench (1). A positioning mechanism (2) is provided in the interior of the installation groove (4) and on the upper surface of the workbench (1). The positioning mechanism (2) includes a cylinder (27), which is fixedly installed in the mounting groove (4). The output end of the cylinder (27) is fixedly connected to a moving plate (26), and the upper surface of the moving plate (26) is symmetrically hinged with a pull rod (25) through a rotating shaft. The upper surface of the pull rod (25) is hinged with a connecting plate (24) through a rotating shaft. The upper surface of the connecting plate (24) is fixedly connected with a moving rod (22), and the top end of the moving rod (22) passes through the mounting groove (4) and is fixedly connected to a positioning plate (21).

2. The mold for pressing bearings on motor end caps as described in claim 1, characterized in that: The pressing mechanism (3) includes a DC motor (36), which is fixedly installed on the upper surface of the support plate (5). The output end of the DC motor (36) passes through the support plate (5) and is fixedly connected to a lead screw (34). A slider (35) is threaded on the outer surface of the lead screw (34). A connecting rod (31) is fixedly connected to one side of the slider (35), and a pressure head body (32) is fixedly connected to the lower surface of the connecting rod (31).

3. The mold for pressing bearings on motor end caps as described in claim 1, characterized in that: The upper surface of the workbench (1) is provided with a guide groove (28) for use with the moving rod (22), and the moving rod (22) is slidably connected to the guide groove (28).

4. The mold for pressing bearings on motor end caps as described in claim 1, characterized in that: The inner cavity of the mounting groove (4) is fixedly installed with a guide strip (23) for use with the moving rod (22), and the moving rod (22) is slidably sleeved on the outer surface of the guide strip (23).

5. The mold for pressing bearings on the end cover of an electric motor as described in claim 1, characterized in that: The positioning plate (21) has an arc-shaped cross-section and is an anti-slip plate. The lower surface of the positioning plate (21) is slidably connected to the workbench (1).

6. The mold for pressing bearings on the end cover of an electric motor as described in claim 2, characterized in that: The support plate (5) has a vertical groove (33) on one side for use with the lead screw (34) and the slider (35). The bottom end of the lead screw (34) is rotatably connected to the vertical groove (33), and the slider (35) is slidably connected to the vertical groove (33).

7. The mold for pressing bearings on the end cover of an electric motor as described in claim 6, characterized in that: The cross-sectional shape of both the slider (35) and the vertical groove (33) is cross-shaped.

8. The mold for pressing bearings on motor end caps as described in claim 2, characterized in that: The pressure head body (32) is an elastic pressure head.

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