Shielding sleeve bearing press-fitting machine

Abstract

The utility model belongs to the technical field of pump assembling equipment, and relates to a shielding sleeve bearing pressing machine which comprises a lower pressing die and an upper pressing die which are oppositely arranged, a shielding sleeve to be pressed is sleeved outside the lower pressing die, and the diameter of the lower pressing die is matched with the inner diameter of the shielding sleeve. The top end of the lower pressing die is provided with a press-fitting die head matched with the inner diameter of a bearing, the bottom of the upper pressing die is provided with a press-fitting groove matched with the outer contour of the top of a shielding sleeve, the upper pressing die is driven by a power device to move in the axial direction, and the upper pressing die covers the top of the shielding sleeve through the press-fitting groove so as to press-fit the bearing. The shielding sleeve bearing pressing machine has the advantages of being low in cost, accurate in centering, not prone to deformation and high in assembly precision.

Description

Technical Field

[0001] This utility model belongs to the technical field of pump assembly equipment, and relates to a shielded bearing press-fitting machine. Background Technology

[0002] In the field of pump assembly technology, the assembly of shielded bearings is a crucial step, as its assembly quality directly affects the overall performance and operational stability of the pump. In traditional assembly operations, bearing assembly often relies on manual operation, which is not only inefficient but also lacks precision. With the rapid development of industrial automation and intelligent manufacturing, fully automated assembly equipment has become a trend. Compared to manual assembly, automated assembly offers higher efficiency, better precision, and consistency; however, such equipment is very expensive.

[0003] Considering both assembly efficiency and cost, semi-automatic assisted assembly using press-fitting machines has become an ideal choice for small and medium-sized enterprises. However, canned motor pumps are typical thin-walled parts, which present disadvantages such as difficulty in centering during assembly, easy deformation, and the risk of bearing damage during the assembly process. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a shielded sleeve bearing press-fitting machine, which has the advantages of low cost, accurate centering, resistance to deformation, and high assembly precision.

[0005] To solve the above-mentioned technical problems, the objective of this utility model is achieved through the following technical solution:

[0006] A shielded bearing press-fitting machine includes a lower press-fitting die and an upper press-fitting die arranged opposite each other. The lower press-fitting die is fitted with a shielded bearing to be press-fitted. The diameter of the lower press-fitting die is adapted to the inner diameter of the shielded bearing. The top of the lower press-fitting die is provided with a press-fitting die head adapted to the inner diameter of the bearing. The bottom of the upper press-fitting die is provided with a press-fitting groove adapted to the outer contour of the top of the shielded bearing. The upper press-fitting die is driven by a power device to move axially. The upper press-fitting die covers the top of the shielded bearing through the press-fitting groove to press-fit the bearing.

[0007] In the aforementioned shielded sleeve bearing press-fitting machine, the bottom of the lower press mold is provided with a limiting step, which is arranged opposite to the bottom of the shielded sleeve and forms a lower limit structure for the press-fitting stroke.

[0008] In the aforementioned shielded bearing press-fitting machine, a tapered surface is provided on the upper outer periphery of the lower press die, and the tapered surface and the press-fitting die head form a press-fitting plane that abuts against and connects with the bottom of the bearing.

[0009] In the aforementioned shielded bearing press-fitting machine, the lower pressing die is mounted on a workbench, and the power unit is mounted on the workbench via a frame. The piston rod of the power unit is vertically downward and fixedly connected to the upper pressing die. Further, the power unit is a hydraulic cylinder or a pneumatic cylinder, with its cylinder body fixed to a mounting plate at the upper end of the frame. A guide plate is provided below the mounting plate, and the guide plate has a guide hole that matches the outer diameter of the lower pressing die. Preferably, a bushing can also be provided in the guide hole to reduce friction. Preferably, both the mounting plate and the guide plate are horizontally positioned.

[0010] In the aforementioned shielded bearing press-fitting machine, a slide groove is provided on the worktable, and a guide block that cooperates with the slide groove is provided at the bottom of the lower press mold. The lower press mold slides between the first end and the second end of the slide groove. When the lower press mold moves to the first end, it is in the feeding position, and when it moves to the second end, it is in the press-fitting position. Preferably, the guide block can be made of self-lubricating material and fixed to the bottom of the lower press mold with fasteners.

[0011] In the aforementioned shielded bearing press-fitting machine, a positioning mechanism is provided at the second end of the slide groove. The positioning mechanism includes a positioning seat and a positioning bolt screwed onto the positioning seat. When the lower die moves to the press-fitting station, it abuts against the end of the positioning bolt.

[0012] Compared with the prior art, this utility model has the following advantages:

[0013] 1. This utility model provides a shielded sleeve bearing press-fitting machine, which adopts a press-fitting structure with an upper and lower press-fitting die. The shielded sleeve with the pre-installed bearing is put into the matching lower press-fitting die, and then the upper press-fitting die with a press-fitting groove is used to press the bearing. The press-fitting groove is adapted to the top contour of the shielded sleeve. During the press-fitting process, it can protect the shielded sleeve from deformation and provide a centering function. At the same time, it works with the press-fitting die head to center the bearing, thereby ensuring the press-fitting accuracy and preventing the shielded sleeve from deforming and the bearing from being damaged during the press-fitting process.

[0014] 2. This utility model adopts a movable lower pressing mold design. During feeding, the lower pressing mold can be moved to the outside of the upper pressing mold and the power device to increase the axial space for feeding the shielding sleeve. This facilitates feeding and also compresses the movement stroke of the power device. After feeding is completed, it is moved to the pressing station for pressing. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention;

[0016] Figure 2 yes Figure 1 Axial sectional view;

[0017] Figure 3 yes Figure 2 Enlarged view of point A;

[0018] Figure 4 This is a perspective view of the pressing die of this utility model;

[0019] Figure 5 This is a perspective view of the pressing die of this utility model;

[0020] Reference numerals: 1. Lower die; 2. Upper die; 3. Shielding sleeve; 4. Bearing; 5. Pressing die head; 6. Pressing groove; 7. Power unit; 8. Limiting step; 9. Conical surface; 10. Pressing plane; 11. Worktable; 12. Frame; 13. Slide groove; 14. Guide block; 15. Positioning mechanism; 16. Mounting plate; 17. Guide plate. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-5 :

[0022] A shielded sleeve bearing press-fitting machine includes a lower press mold 1 and an upper press mold 2 arranged opposite to each other. The lower press mold 1 is fitted with a shielded sleeve 3 to be press-fitted. The diameter of the lower press mold 1 is adapted to the inner diameter of the shielded sleeve 3. The top of the lower press mold 1 is provided with a press-fitting die head 5 adapted to the inner diameter of the bearing 4. The bottom of the upper press mold 2 is provided with a press-fitting groove 6 adapted to the outer contour of the top of the shielded sleeve 3. Specifically, the top of the shielded sleeve 3 is provided with a multi-step structure, and the press-fitting groove 6 is a corresponding multi-step groove. The upper press mold 2 is driven by a power device 7 to move axially. The upper press mold 2 covers the top of the shielded sleeve 3 through the press-fitting groove 6 to press-fit the bearing 4.

[0023] The assembly process in this embodiment is as follows: During material loading, the bearing 4 is first pre-installed into the bearing seat of the shielding sleeve 3. Then, the pre-installed shielding sleeve 3 is fitted into the lower pressing mold 1. After fitting, the inner wall of the shielding sleeve 3 fits against the outer wall of the lower pressing mold 1, the inner hole of the bearing 4 fits against the outer wall of the pressing die head 5, and the bottom of the bearing 4 abuts against the upper end face of the upper pressing mold 2. After material loading is completed, the power device 7 is started. The power device 7 drives the upper pressing mold 2 to move downward. During the downward movement, the top of the shielding sleeve 3 gradually enters the pressing groove 6. After it is completely covered, the bottom inner wall of the pressing groove 6 fits against the top outer wall of the shielding sleeve 3, and the horizontal surfaces of each step in the pressing groove 6 abut against the horizontal surfaces of each step on the top of the shielding sleeve 3. At this time, pressing begins. The upper pressing mold 2 drives the shielding sleeve 3 to move downward relative to the bearing 4 supported by the lower pressing mold 1. The bearing 4 is pressed into the bearing seat of the shielding sleeve 3. After pressing is completed, the power device 7 drives the upper pressing mold 2 to reset and remove the pressed shielding sleeve 3.

[0024] The bottom of the aforementioned lower die 1 is provided with a limiting step 8. The limiting step 8 is arranged opposite to the bottom of the shielding sleeve 3 and forms a lower limit structure for the pressing stroke. Through the lower limit structure and the stroke control of the power device 7, the pressing accuracy can be controlled more accurately, and the bearing 4 can be prevented from being crushed.

[0025] The upper outer periphery of the aforementioned lower die 1 is provided with a tapered surface 9. The tapered surface 9 and the pressing die head 5 form a pressing plane 10 that abuts against the bottom of the bearing 4. By providing the tapered surface 9, the lower die 1 can be prevented from contacting the stepped structure of the top cavity of the shielding sleeve 3 during pressing, and the shielding sleeve 3 can be easily inserted when feeding materials. By providing the pressing plane 10, the bearing 4 can be better supported during pressing.

[0026] The aforementioned lower die 1 is mounted on the workbench 11, and the power unit 7 is mounted on the workbench 11 via a frame 12. The piston rod of the power unit 7 is vertically downward and fixedly connected to the upper die 2. Further, the power unit 7 is a hydraulic cylinder or a pneumatic cylinder, and its cylinder body is fixed on the mounting plate 16 at the upper end of the frame 12. A guide plate 17 is provided below the mounting plate 16, and the guide plate 17 is provided with a guide hole that matches the outer diameter of the lower die 1. Preferably, a bushing can also be provided in the guide hole to reduce friction. Preferably, both the mounting plate 16 and the guide plate 17 are horizontally arranged. During operation, the upper die 2 is driven to move up and down by the extension and retraction of the piston rod, and the axial accuracy of the movement of the upper die 2 is ensured by the guide hole.

[0027] This embodiment further optimizes the feeding structure to meet the feeding requirements of the shielding sleeve 3 with a considerable axial dimension. Specifically, the workbench 11 is provided with a slide groove 13, and the bottom of the lower pressing mold 1 is provided with a guide block 14 that cooperates with the slide groove 13. The lower pressing mold 1 slides between the first end and the second end of the slide groove 13. When the lower pressing mold 1 moves to the first end, it is in the feeding position, and when it moves to the second end, it is in the pressing position. Preferably, the guide block 14 can be made of self-lubricating material and fixed to the bottom of the lower pressing mold 1 with fasteners. During feeding, the lower pressing mold 1 is pulled out from the pressing position to the first end, the shielding sleeve 3 is put on, and then the lower pressing mold 1 is pushed into the second end face for pressing.

[0028] Furthermore, a positioning mechanism 15 is provided at the second end of the slide groove 13. The positioning mechanism 15 includes a positioning seat and a positioning bolt screwed onto the positioning seat. When the lower pressing mold 1 moves to the pressing position, it abuts against the end of the positioning bolt. During pressing, the lower pressing mold 1 is pushed to the position where it abuts against the positioning bolt, and then pressing is performed to ensure the accuracy of the pressing position. In addition, during pressing, as the upper pressing mold 2 moves downward, the pressing groove 6 that mates with the top of the shielding sleeve 3 can also perform a small amount of automatic correction to the position of the shielding sleeve 3.

[0029] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A press-fitting machine for shielded bearings, characterized in that, The device includes a lower pressing mold (1) and an upper pressing mold (2) arranged opposite to each other. The lower pressing mold (1) is fitted with a shielding sleeve (3) to be pressed. The diameter of the lower pressing mold (1) is adapted to the inner diameter of the shielding sleeve (3). The top of the lower pressing mold (1) is provided with a pressing die head (5) adapted to the inner diameter of the bearing (4). The bottom of the upper pressing mold (2) is provided with a pressing groove (6) adapted to the outer contour of the top of the shielding sleeve (3). The upper pressing mold (2) is driven by a power device (7) to move axially. The upper pressing mold (2) is covered on the top of the shielding sleeve (3) through the pressing groove (6) to press the bearing (4).

2. The shielded sleeve bearing press-fitting machine according to claim 1, characterized in that, The bottom of the lower pressing mold (1) is provided with a limiting step (8), which is arranged opposite to the bottom of the shielding sleeve (3) to form a lower limiting structure for the pressing stroke.

3. The shielded sleeve bearing press-fitting machine according to claim 1, characterized in that, The upper outer periphery of the lower die (1) is provided with a tapered surface (9), and the tapered surface (9) and the pressing die head (5) form a pressing plane (10) that abuts against the bottom of the bearing (4).

4. The shielded sleeve bearing press-fitting machine according to claim 1, characterized in that, The lower die (1) is installed on the workbench (11), and the power unit (7) is mounted on the workbench (11) via a frame (12). The piston rod of the power unit (7) is vertically downward and fixedly connected to the upper die (2).

5. A shielded sleeve bearing press-fitting machine according to claim 4, characterized in that, The workbench (11) is provided with a slide groove (13), and the bottom of the lower die (1) is provided with a guide block (14) that cooperates with the slide groove (13). The lower die (1) slides between the first end and the second end of the slide groove (13). When the lower die (1) moves to the first end, it is in the loading station, and when it moves to the second end, it is in the pressing station.

6. The shielded sleeve bearing press-fitting machine according to claim 5, characterized in that, The second end of the slide (13) is provided with a positioning mechanism (15), which includes a positioning seat and a positioning bolt screwed on the positioning seat. When the lower die (1) moves to the pressing station, it abuts against the end of the positioning bolt.

7. A shielded sleeve bearing press-fitting machine according to claim 4, characterized in that, The power unit (7) is a hydraulic cylinder or a pneumatic cylinder, and its cylinder body is fixed on the mounting plate (16) at the upper end of the frame (12). A guide plate (17) is provided below the mounting plate (16), and a guide hole adapted to the outer diameter of the lower die (1) is provided on the guide plate (17).

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