Pump cover bearing press-fitting machine

Abstract

The utility model belongs to the technical field of pump assembly equipment, and relates to a pump cover bearing press-fitting machine which comprises a fixed seat, a fixed column is arranged on the fixed seat, and a centering assembly head matched with the inner diameter of a bearing is arranged at the upper end of the fixed column; the movable seat is arranged on the fixed column in a sliding mode through a center hole of the movable seat, a spring is arranged between the bottom of the movable seat and the fixed seat, and a centering assembly groove matched with the outer diameter of the pump cover is formed in the upper end of the movable seat; the gland is detachably arranged in the middle of the pump cover in a covering mode, and the inner diameter of the gland is matched with the outer diameter of the pump cover bearing seat; and the power device is arranged corresponding to the gland and drives the gland to move downwards. The pump cover bearing press-fitting 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 pump cover bearing press-fitting machine. Background Technology

[0002] In the field of pump assembly technology, the assembly of pump cover 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, pump covers 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 pump cover 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 pump cover bearing press-fitting machine, comprising:

[0007] A fixed base, wherein a fixed column is provided on the fixed base, and a centering assembly head matching the inner diameter of the bearing is provided at the upper end of the fixed column;

[0008] The movable seat is slidably mounted on the fixed column through its central hole. A spring is provided between the bottom of the movable seat and the fixed seat. A centering assembly groove that matches the outer diameter of the pump cover is provided at the upper end of the movable seat.

[0009] A gland, wherein the separable gland is located in the middle of the pump cover, and the inner diameter of the gland is adapted to the outer diameter of the pump cover bearing seat;

[0010] A power unit is provided, which is correspondingly provided with the pressure cap and drives the pressure cap to move downward.

[0011] In the aforementioned pump cover bearing press-fitting machine, an annular positioning insert is provided inside the movable seat. The inner diameter of the positioning insert is larger than the outer diameter of the bearing, and a positioning groove adapted to the bottom of the pump cover is provided at the inner edge of the positioning insert.

[0012] In the aforementioned pump cover bearing press-fitting machine, the outer diameter of the fixed column, the center hole diameter of the movable seat, and the inner diameter of the positioning insert are the same.

[0013] In the aforementioned pump cover bearing press-fitting machine, a limiting step is provided on the fixed column. The limiting step is positioned opposite to the lower end face of the movable seat and forms a lower limit structure for the travel of the movable seat.

[0014] In the aforementioned pump cover bearing press-fitting machine, the movable seat is fitted with a replaceable bushing, and the upper end face of the bushing forms the limiting step; the replaceable bushing refers to the bushing's specifications or quantity being replaceable.

[0015] In the aforementioned pump cover bearing press-fitting machine, the press cover includes a sleeve with a lower opening, and a pressure-bearing block is provided on the top of the sleeve. The power device is located above the pressure-bearing block and drives the press cover to move downward through the pressure-bearing block. Preferably, the pressure-bearing block has a frustum structure, and the upper base area of ​​the frustum is larger than the lower base area.

[0016] In the aforementioned pump cover bearing press-fitting machine, the fixed seat is mounted on a workbench, the workbench is provided with a mounting plate, the mounting plate is provided with positioning holes, the bottom of the fixed seat is provided with positioning protrusions that cooperate with the positioning holes, and the fixed seat is fixedly connected to the mounting plate through a flange structure.

[0017] In the aforementioned pump cover bearing press-fitting machine, the power unit is a cylinder or a hydraulic cylinder, which is mounted on a workbench via a frame, with its piston rod pointing vertically downwards and connected to a press-fitting plate that mates with the cover.

[0018] Compared with the prior art, this utility model has the following advantages:

[0019] 1. This utility model provides a pump cover bearing press-fitting machine, which adopts a press-fitting structure with a fixed seat and a movable seat. The sliding guide structure of the movable seat and the fixed column ensures the control accuracy of the axial displacement during press-fitting. The fixed seat centers the bearing, and the movable seat centers the pump cover, improving the centering accuracy and thus ensuring assembly precision. Simultaneously, this utility model also utilizes a pressure cap to protect the pump cover and indirectly press-fit it. Combined with accurate centering, this prevents deformation of the pump cover and damage to the bearing during the press-fitting process.

[0020] 2. This utility model features a limiting step on the fixed column to limit the pressing stroke of the movable seat, thereby improving the accuracy of bearing assembly and preventing bearing damage caused by over-pressing. Furthermore, this utility model uses replaceable bushings to provide the limiting step. By using bushings of different specifications or in different quantities, the pressing stroke can be changed to accommodate pump cover bearings of different specifications. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present invention;

[0022] Figure 2 yes Figure 1 Axial sectional view;

[0023] Figure 3 This is a perspective view of some components of this utility model;

[0024] Figure 4 yes Figure 3 Axial sectional view;

[0025] Reference numerals: 1. Fixed seat; 2. Fixed column; 3. Bearing; 4. Centering assembly head; 5. Movable seat; 6. Center hole; 7. Spring; 8. Pump cover; 9. Centering assembly groove; 10. Pressure cover; 11. Bearing seat; 12. Power unit; 13. Positioning insert; 14. Positioning groove; 15. Limiting step; 16. Bushing; 17. Sleeve; 18. Pressure block; 19. Worktable; 20. Mounting plate; 21. Positioning hole; 22. Positioning protrusion; 23. Frame; 24. Press plate. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-4 :

[0027] A pump cover bearing press-fitting machine, comprising:

[0028] A fixed base 1 is provided with a fixed column 2, and a centering assembly head 4 that matches the inner diameter of the bearing 3 is provided at the upper end of the fixed column 2.

[0029] The movable seat 5 is slidably mounted on the fixed column 2 through its central hole 6. A spring 7 is provided between the bottom of the movable seat 5 and the fixed seat 1. A centering assembly groove 9 that matches the outer diameter of the pump cover 8 is provided at the upper end of the movable seat 5.

[0030] A pressure cap 10 is detachably disposed in the middle of the pump cover 8, and the inner diameter of the pressure cap 10 is adapted to the outer diameter of the bearing seat 11 of the pump cover 8.

[0031] A power unit 12 is provided correspondingly to the pressure cover 10 and drives the pressure cover 10 to move downward.

[0032] The assembly method in this embodiment is as follows:

[0033] 1. Loading: Place the pump cover 8 to be press-fitted with its opening facing down into the centering assembly groove 9 of the movable seat 5, then place the pressure cover 10 on the middle of the pump cover 8, and place the press-fitted bearing 3 on the centering assembly head 4 of the fixed seat 1 to complete the loading.

[0034] 2. Pressing: Start the power unit 12. The power unit 12 applies downward pressure to the pressure cover 10. Driven by the power unit 12, the pressure cover 10, pump cover 8 and movable seat 5 move downward in axial direction in sync. While moving downward, the spring 7 is compressed. When it moves to the position of the fixed column 2, it continues to move downward. The bearing 3 enters the bearing seat 11 of the pump cover 8. After moving downward to the predetermined position, the bearing 3 is fully assembled in place, and its outer ring forms a tight fit structure with the bearing seat 11 of the pump cover 8.

[0035] 3. Unloading: The power unit 12 is reset, and the spring 7 drives the mounting base, the pressure cover 10 and the pump cover 8 with the bearing 3 assembled to move upward to the initial position. After that, the pressure cover 10 is removed, and then the pump cover 8 is removed.

[0036] Another assembly method can also be used in this embodiment: When loading, the bearing 3 is first pre-installed into the bearing seat 11 of the pump cover 8, and then the same method is followed. During pressing, the cover 10, the pump cover 8, the bearing 3 and the movable seat 5 move downward along the axial direction in sync. When it moves to the position of the fixed column 2, it continues to move downward. The centering assembly head 4 is inserted into the inner ring of the bearing 3 and continues to move downward. The lower end face of the bearing 3 abuts against the upper end face of the fixed column 2 and continues to move downward. The relative movement of the movable seat 5 and the fixed seat 1 presses the bearing 3 into the bearing seat 11 of the pump cover 8.

[0037] The aforementioned movable seat 5 is provided with an annular positioning insert 13. The inner diameter of the positioning insert 13 is larger than the outer diameter of the bearing 3. The inner edge of the positioning insert 13 is provided with a positioning groove 14 that fits the bottom of the pump cover 8. During press-fitting, the bottom of the pump cover 8 is located in the positioning groove 14 and abuts against it. By setting the positioning insert 13, the pump cover 8 can be positioned more accurately during press-fitting, and it also provides support.

[0038] In this embodiment, the outer diameter of the fixed column 2, the center hole diameter of the movable seat 5, and the inner diameter of the positioning insert 13 are the same.

[0039] This embodiment further provides a press-fit stroke limiting structure. When the press-fit stroke reaches the lower limit position, the bearing 3 is just assembled into the bearing seat 11. The specific structure is as follows: the fixed column 2 is provided with a limiting step 15. The limiting step 15 is arranged opposite to the lower end face of the movable seat 5 and forms a lower limit structure for the stroke of the movable seat 5. During press-fitting, when the lower end face of the movable seat 5 moves to the position that abuts against the limiting step 15, the movable seat 5 cannot continue to move downward, thereby forming a limiting structure.

[0040] To accommodate the press-fitting of pump cover 8 bearing 3 of more specifications, the movable seat 5 is fitted with a replaceable bushing 16, the upper end face of which forms the limiting step 15; the replaceable bushing 16 means that the specifications or quantity of the bushing 16 can be changed; by changing the bushing 16, different lower limit strokes can be obtained.

[0041] In this embodiment, the specific structure of the pressure cap 10 is as follows: the pressure cap 10 includes a sleeve 17 with a lower opening, the inner diameter of the pressure cap 10 is the inner diameter of the sleeve 17, a pressure-bearing block 18 is provided on the top of the sleeve 17, and the power device 12 is provided above the pressure-bearing block 18 and drives the pressure cap 10 to move downward through the pressure-bearing block 18; preferably, the pressure-bearing block 18 is a frustum structure, and the upper base area of ​​the frustum is larger than the lower base area.

[0042] The installation structure of the fixed base 1 in this embodiment is as follows: the fixed base 1 is installed on the workbench 19, the workbench 19 is provided with an installation plate 20, the installation plate 20 is provided with a positioning hole 21, the bottom of the fixed base 1 is provided with a positioning protrusion 22 that cooperates with the positioning hole 21, during installation, the positioning protrusion 22 is inserted into the positioning hole 21 to form a positioning structure, and the fixed base 1 is fixedly connected to the installation plate 20 through a flange structure.

[0043] The power device 12 in this embodiment is configured as follows: the power device 12 is a cylinder or a hydraulic cylinder, which is mounted on the workbench 19 via a frame 23. Its piston rod is vertically downward and connected to a pressing plate 24 that cooperates with the pressure cover 10. When the piston rod extends, it drives the pressing plate 24 to move downward. After contacting the pressure cover 10, it begins to drive the pressure cover 10 to move downward.

[0044] 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 pump cover bearing press-fitting machine, characterized in that, include: A fixed base (1) is provided on the fixed base (1), and a fixed column (2) is provided on the upper end of the fixed column (2), which is a centering assembly head (4) that matches the inner diameter of the bearing (3). Movable seat (5), the movable seat (5) is slidably mounted on the fixed column through its central hole (6), a spring (7) is provided between the bottom of the movable seat (5) and the fixed seat (1), and a centering assembly groove (9) adapted to the outer diameter of the pump cover (8) is provided at the upper end of the movable seat (5). A pressure cap (10) is detachably installed in the middle of the pump cover (8), and the inner diameter of the pressure cap (10) is adapted to the outer diameter of the bearing seat (11) of the pump cover (8). A power unit (12) is provided corresponding to the pressure cover (10) and drives the pressure cover (10) to move downward.

2. The pump cover bearing press-fitting machine according to claim 1, characterized in that, The movable seat (5) is provided with an annular positioning insert (13), the inner diameter of the positioning insert (13) is larger than the outer diameter of the bearing (3), and the inner edge of the positioning insert (13) is provided with a positioning groove (14) that is adapted to the bottom of the pump cover (8).

3. The pump cover bearing press-fitting machine according to claim 1, characterized in that, The fixed column (2) is provided with a limiting step (15), which is arranged opposite to the lower end face of the movable seat (5) to form a lower limit structure for the stroke of the movable seat (5).

4. A pump cover bearing press-fitting machine according to claim 3, characterized in that, The fixed post (2) is fitted with a replaceable bushing (16), the upper end face of which forms the limiting step (15).

5. A pump cover bearing press-fitting machine according to claim 1, characterized in that, The pressure cap (10) includes a sleeve (17) with a lower opening. A pressure block (18) is provided on the top of the sleeve (17). The power device (12) is located above the pressure block (18) and drives the pressure cap (10) to move downward through the pressure block (18).

6. A pump cover bearing press-fitting machine according to claim 1, characterized in that, The fixed seat (1) is installed on the workbench (19), the workbench (19) is provided with a mounting plate (20), the mounting plate (20) is provided with a positioning hole (21), the bottom of the fixed seat (1) is provided with a positioning protrusion (22) that cooperates with the positioning hole (21), and the fixed seat (1) is fixedly connected to the mounting plate (20) through a flange structure.

7. A pump cover bearing press-fitting machine according to claim 6, characterized in that, The power unit (12) is a cylinder or a hydraulic cylinder. The cylinder or hydraulic cylinder is mounted on the workbench (19) via a frame (23). Its piston rod is vertically downward and connected to a press plate (24) that cooperates with the pressure cover (10).

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