Upper and lower press-fitting device for shaft sleeve and shaft seal of front cover of automobile air conditioner compressor
Through the sleeve press head and shaft seal press head driven by servo cylinder and cylinder, combined with PLC control, high-precision synchronous compression assembly of the front cover bushing and shaft seal of the automotive air conditioner compressor is achieved, solving the problems of cumbersome processes and low efficiency in the prior art, and reducing costs.
Patent Information
- Application Number
- CN202422051210.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-22
AI Technical Summary
In the prior art, the compression and assembly process of the front cover shaft sleeve and shaft seal of the automobile air conditioner compressor is complicated, the processing accuracy is low, the efficiency is low and the cost is high.
The sleeve pressure head and shaft sealing pressure head driven by servo cylinders and cylinders are adopted to control the torque and reaction force of the servo cylinders through PLC to realize the synchronous pressure assembly of the sleeve and shaft seal, simplifying the process and improving the accuracy.
High-precision pressing of shaft sleeves and shaft seals is realized, operating procedures are simplified, processing efficiency is improved and production costs are reduced.
Smart Images
Figure CN223084168U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air-conditioning compressor processing, in particular to an upper and lower press-fitting device for the shaft sleeve and shaft seal of the front cover of an automotive air-conditioning compressor. Background Art
[0002] An automotive air-conditioning compressor is the power source of the automotive air-conditioning circulation system, mainly responsible for compressing low-temperature and low-pressure gaseous refrigerant into high-temperature and high-pressure gaseous refrigerant, creating necessary high-pressure conditions for the refrigerant to condense and release heat in the condenser, and overcoming the circulation resistance of the refrigerant in the refrigeration circuit. Its basic functions include sending cold air in summer, sending hot air in winter, and can also perform air exchange, in-vehicle air purification and humidity control.
[0003] The front cover of an air-conditioning compressor is an important part of the air-conditioning compressor. Usually, a shaft sleeve and a shaft seal need to be press-fitted at the shaft hole of the front cover of the air-conditioning compressor. At present, under the requirements of the existing processing flow, the shaft sleeve and the shaft seal need to be press-fitted separately, which not only has cumbersome processes, high production costs, but also low processing accuracy and low efficiency.
[0004] Therefore, it is necessary to improve the deficiencies of the above existing technologies. Content of the Utility Model
[0005] The technical problem to be solved by the utility model is to provide an upper and lower press-fitting device for the shaft sleeve and shaft seal of the front cover of an automotive air-conditioning compressor in view of the deficiencies of the above existing technologies, and solve the problems of cumbersome processes, low processing accuracy, low processing efficiency and high production costs in the existing technologies when the shaft sleeve and the shaft seal need to be press-fitted separately during the processing.
[0006] To achieve the above object, the utility model provides the following technical solution: An upper and lower press-fitting device for the shaft sleeve and shaft seal of the front cover of an automotive air-conditioning compressor, including a bracket, one end of the bracket is installed with a servo electric cylinder, and the other end is installed with a cylinder. The movable end of the servo electric cylinder is installed with a shaft sleeve press head, and the movable end of the cylinder is installed with a shaft seal press head. The shaft sleeve press head and the shaft seal press head are arranged facing each other. There is a front cover mounting plate slidably connected to the bracket between the shaft sleeve press head and the shaft seal press head. The front cover mounting plate is provided with a front cover fixing mechanism for fixing the front cover. One end of the shaft sleeve press head close to the front cover mounting plate is provided with a shaft sleeve fixing mechanism for fixing the shaft sleeve. One end of the shaft seal press head close to the front cover mounting plate is provided with a shaft seal fixing mechanism for fixing the shaft seal.
[0007] With the above technical solution, before press-fitting, the front cover is installed on the front cover fixing mechanism, the shaft sleeve is installed on the shaft sleeve fixing mechanism, and the shaft seal is installed on the shaft seal fixing mechanism. The active end of the servo electric cylinder is started to extend to drive the shaft sleeve pressure head and the shaft sleeve to approach the front cover together. The torque of the servo electric cylinder is read in real time by PLC to determine whether it has moved to the specified position. When the shaft sleeve pressure head and the shaft sleeve are moved into place, the active end of the cylinder extends to drive the shaft seal pressure head and the shaft seal to approach the front cover together until the shaft sleeve and the shaft seal are completely pressed into the shaft hole of the front cover respectively. During the press-fitting process, the reaction force received by the servo electric cylinder is read by PLC to determine whether the shaft sleeve and the shaft seal are pressed into place. The shaft sleeve and the shaft seal are pressed from both sides of the front cover respectively, which can be completed at one time. By controlling the servo electric cylinder by PLC, the position and press-fitting strength can be accurately controlled. Not only is the press-fitting operation process simple and accurate, but it also improves processing efficiency and reduces costs.
[0008] The above technical solution is further configured as follows: a plurality of guide columns are provided between the two ends of the bracket, the front cover mounting plate is slidably sleeved on the guide columns, the front cover fixing mechanism includes a fixing kit installed on the front cover mounting plate, and a fixing hole is provided in the center of the fixing kit for fixing one end of the front cover.
[0009] By adopting the above technical solution, the front cover mounting plate can reciprocate along the guide column on the guide column, so that the servo electric cylinder and the air cylinder can generate mutual force when squeezing both sides of the front cover at the same time. When installing the front cover, insert one end of the front cover into the fixing hole and fix it, and when pressing the shaft sleeve and shaft seal, the position of the shaft hole of the front cover can be accurately aligned.
[0010] The above technical solution is further configured as follows: the sleeve fixing mechanism includes a plurality of annular grooves arranged on one end of the sleeve pressing head close to the front cover mounting plate and an elastic ring sleeved on the annular grooves, and the sleeve pressing head can achieve interference fit with the sleeve through the elastic ring.
[0011] By adopting the above technical solution, after the shaft sleeve is put on the shaft sleeve pressure head, the shaft sleeve pressure head and the shaft sleeve are interference fit through the elastic ring, so that they will not fall off easily. After the pressure installation, the shaft sleeve pressure head can be pulled out from the inner side of the shaft sleeve because the outer side of the shaft sleeve is more firmly connected to the front cover.
[0012] The above technical solution is further configured as follows: the shaft seal fixing mechanism comprises a circular boss arranged at one end of the shaft seal pressure head close to the front cover mounting plate, and the end of the circular boss is chamfered.
[0013] By adopting the above technical solution, when installing the shaft seal, the circular boss is inserted into the corresponding cylindrical groove on the shaft seal, so that the shaft seal can be circumferentially fixed so that the shaft seal can be aligned with the shaft hole of the front cover; setting the chamfer makes it easier to install the shaft seal.
[0014] The further setting of the above technical solution is as follows: A spring is sleeved on one end of the guide post close to the cylinder. One end of the spring abuts against the end of the bracket, and the other end abuts against the close end of the front cover mounting plate. When the front cover is not being press-fitted, the spring can keep the front cover mounting plate between the bushing press head and the shaft seal press head.
[0015] Adopting the above technical solution, when the front cover is not being press-fitted, the spring prevents the front cover mounting plate from falling onto the shaft seal press head due to gravity, facilitating the installation of the shaft seal. Additionally, the spring also has a certain buffering and positioning effect, enabling the servo electric cylinder to sense the position and avoid overextension.
[0016] The further setting of the above technical solution is as follows: A limiting plate is slidably sleeved on one end of the guide post close to the bushing press head. One side of the limiting plate is fixedly connected to the movable end of the servo electric cylinder, and the other side is fixedly connected to the bushing press head.
[0017] Adopting the above technical solution, the movable end of the servo electric cylinder can drive the limiting plate to slide along the guide post, further driving the bushing press head, thereby making the movement of the bushing press head more stable and enabling the bushing to be more accurately pressed into the shaft hole of the front cover.
[0018] The further setting of the above technical solution is as follows: Several limiting posts are provided at the movable end of the cylinder, and the end of the limiting post close to the front cover mounting plate can abut against the front cover mounting plate.
[0019] Adopting the above technical solution, when the front cover mounting plate is squeezed and approaches the movable end of the cylinder, the limiting posts can limit the stroke limit of the front cover mounting plate to prevent the cylinder from being damaged.
[0020] The beneficial effects achieved by the present utility model are as follows: Not only is the press-fitting operation process simple and highly accurate, but it also improves the processing efficiency and reduces the cost. Description of the Drawings
[0021] Figure 1 is a schematic structural view of an embodiment of the present utility model;
[0022] Figure 2 is Figure 1 the partial view at I in;
[0023] Figure 3 is Figure 1 the partial view at II in;
[0024] Figure 4 is a schematic structural view of the bushing press head in an embodiment of the present utility model;
[0025] Figure 5 is a schematic structural view of the fixing kit in an embodiment of the present utility model;
[0026] Figure 6 This is a schematic structural view of the front cover in an embodiment of the present utility model. Detailed implementation manners
[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0028] As Figures 1-6 shown, a device for press-fitting an upper and a lower shaft seal of a front cover shaft sleeve of an automotive air-conditioning compressor includes a bracket 1. One end of the bracket 1 is installed with a servo electric cylinder 2, and the other end is installed with a cylinder 3. A shaft sleeve press head 4 is installed on the movable end of the servo electric cylinder 2, and a shaft seal press head 5 is installed on the movable end of the cylinder 3. The shaft sleeve press head 4 and the shaft seal press head 5 are arranged facing each other. There is a front cover mounting plate 6 slidably connected to the bracket 1 between the shaft sleeve press head 4 and the shaft seal press head 5. The front cover mounting plate 6 is provided with a front cover fixing mechanism for fixing the front cover A. One end of the shaft sleeve press head 4 close to the front cover mounting plate 6 is provided with a shaft sleeve fixing mechanism for fixing the shaft sleeve B. One end of the shaft seal press head 5 close to the front cover mounting plate 6 is provided with a shaft seal fixing mechanism for fixing the shaft seal C. There are several guide columns 7 between the two ends of the bracket 1. The front cover mounting plate 6 is slidably sleeved on the guide columns 7. The front cover fixing mechanism includes a fixing kit 61 installed on the front cover mounting plate 6. The center of the fixing kit 61 is provided with a fixing hole 610 capable of fixing one end of the front cover A. The shaft sleeve fixing mechanism includes two annular grooves 40 provided at one end of the shaft sleeve press head 4 close to the front cover mounting plate 6 and an elastic ring 41 sleeved on the annular grooves 40. The shaft sleeve press head 4 can achieve an interference fit with the shaft sleeve through the elastic ring 41. The shaft seal fixing mechanism includes a circular convex column 51 provided at one end of the shaft seal press head 5 close to the front cover mounting plate 6. The end of the circular convex column 51 is provided with a chamfer 511. A spring 8 is sleeved on the guide column 7 close to the cylinder 3. One end of the spring 8 abuts against the end of the bracket 1, and the other end abuts against the close end of the front cover mounting plate 6. When no press-fitting operation is performed on the front cover A, the spring 8 can make the front cover mounting plate 6 located between the shaft sleeve press head 4 and the shaft seal press head 5. A limiting plate 9 is slidably sleeved on the guide column 7 close to the shaft sleeve press head 4. One side of the limiting plate 9 is fixedly connected to the movable end of the servo electric cylinder 2, and the other side is fixedly connected to the shaft sleeve press head 4. The movable end of the cylinder 3 is provided with two limiting columns 10. The end of the limiting column 10 close to the front cover mounting plate 6 can abut against the front cover mounting plate 6.
[0029] In the above embodiment, before press-fitting, one end of the front cover A is respectively installed into the fixing hole 610 of the fixing kit 61, the bushing B is sleeved on the elastic ring 41 of the bushing press head 4, and the shaft seal C is installed on the circular stud 51 of the shaft seal press head 5. Then, the movable end of the servo cylinder 2 extends to drive the bushing press head 4 and the bushing B to approach the front cover A together. The PLC reads the torque of the servo cylinder 2 in real time to determine whether it has moved to the specified position. When the bushing press head 4 and the bushing B are in place, the movable end of the cylinder 3 extends to drive the shaft seal press head 5 and the shaft seal C to approach the front cover A until the bushing B and the shaft seal C are completely pressed into the shaft hole A0 of the front cover A respectively; during the press-fitting process, the PLC determines whether the bushing B and the shaft seal C are pressed in place by the reaction force received at the servo cylinder 2; by press-fitting the bushing B and the shaft seal C from both sides of the front cover A respectively and completing it at one time, the press-fitting operation process is simple. By controlling the servo cylinder 2 with the PLC, the position and the press-fitting strength can be accurately controlled, the machining accuracy is high, thereby improving the machining efficiency and reducing the cost.
Claims
1. An upper and lower pressing device for the shaft seal of the front cover bushing of an automotive air-conditioning compressor, comprising a bracket, characterized in that: One end of the bracket is installed with a servo electric cylinder, and the other end is installed with a cylinder. A bushing press head is installed on the movable end of the servo electric cylinder, and a shaft seal press head is installed on the movable end of the cylinder. The bushing press head and the shaft seal press head are arranged facing each other. A front cover mounting plate slidably connected to the bracket is provided between the bushing press head and the shaft seal press head. A front cover fixing mechanism for fixing the front cover is provided on the front cover mounting plate. A bushing fixing mechanism for fixing the bushing is provided at one end of the bushing press head close to the front cover mounting plate. A shaft seal fixing mechanism for fixing the shaft seal is provided at one end of the shaft seal press head close to the front cover mounting plate.
2. The upper and lower pressing device for the shaft seal of the front cover shaft sleeve of an automotive air-conditioning compressor according to claim 1, wherein: A plurality of guide columns are provided between the two ends of the bracket. The front cover mounting plate is slidably sleeved on the guide columns. The front cover fixing mechanism includes a fixing kit installed on the front cover mounting plate, and a fixing hole capable of fixing one end of the front cover is provided at the center of the fixing kit.
3. The upper and lower pressing device for the shaft seal of the front cover shaft sleeve of an automotive air-conditioning compressor according to claim 2, characterized in that: The bushing fixing mechanism includes a plurality of annular grooves provided at one end of the bushing press head close to the front cover mounting plate and an elastic ring sleeved on the annular grooves. The bushing press head can achieve interference fit with the bushing through the elastic ring.
4. The up and down press-fitting device for the shaft seal of the front cover shaft sleeve of an automotive air-conditioning compressor according to claim 3, characterized in that: The shaft seal fixing mechanism includes a circular convex column provided at one end of the shaft seal press head close to the front cover mounting plate, and a chamfer is provided at the end of the circular convex column.
5. A device for pressing the upper and lower shaft seals of the front cover shaft sleeve of an automotive air conditioner compressor according to claim 4, characterized in that: A spring is sleeved on the guide column close to the cylinder end. One end of the spring abuts against the end of the bracket, and the other end abuts against the close end of the front cover mounting plate. When no press-fitting operation is performed on the front cover, the spring can make the front cover mounting plate located between the bushing press head and the shaft seal press head.
6. The upper and lower pressing device for the shaft seal of the front cover shaft sleeve of an automotive air-conditioning compressor according to claim 5, characterized in that: A limit plate is slidably sleeved on the guide column close to the bushing press head end. One side of the limit plate is fixedly connected to the movable end of the servo electric cylinder, and the other side is fixedly connected to the bushing press head.
7. A device for press-fitting the upper and lower shaft seals of the front cover shaft sleeve of an automotive air-conditioning compressor according to any one of claims 1-6, characterized in that: A plurality of limit columns are provided at the movable end of the cylinder, and the end of the limit column close to the front cover mounting plate can abut against the front cover mounting plate.