Swash Plate Variable Displacement Compressor Cold Running-in Tooling

Abstract

A cold running-in tooling for a swash plate type variable displacement compressor, comprising a tooling base plate, a pressing device, a rotating device, a pressing and rotating mechanism, and a running-in device. The beneficial effects of the present invention are as follows: It can perform grinding on the cylinder holes and pistons of the swash plate type variable displacement compressor, enabling the pistons to reciprocate within the compressor cylinder holes. Place the compressor on the tooling base plate, first start the air cylinder to press the variable displacement compressor, and the swash plate is deflected to the maximum angle, that is, the maximum working stroke. Then start the motor to drive the drive shaft to rotate, thereby driving the main shaft of the compressor to rotate. At the same time, the pistons of the compressor reciprocate within the cylinder holes, continuously undergoing running-in. The entire process can be automatically completed, with high running-in efficiency, which can improve the service life of the compressor, has good use effects, and is conducive to promotion.

Description

Technical Field

[0001] The present invention relates to the field of equipment tooling running-in, and particularly to a cold running-in tooling for a swash plate type variable displacement compressor. Background Art

[0002] At present, a variable displacement compressor is a continuously variable volume compressor that can adjust the compression ratio of the compressor according to different working environments. Cold running-in means that when the compressor is assembled, the maximum working stroke during the operation of the variable displacement compressor is simulated, so that the piston reciprocates inside the compressor to run-in the fit between the cylinder bore and the piston, in order to improve the service life of the compressor. The swash plate type variable displacement compressor is a commonly used compressor in the field of automotive air conditioners at present. Repeatedly running-in the fitting process between its cylinder bore and the piston during the assembly process also has important practical significance for its service life. Summary of the Invention

[0003] The present invention aims to solve the problems existing in the above-mentioned prior art, and provides a cold running-in tooling for a swash plate type variable displacement compressor, which can improve the service life of the compressor.

[0004] The technical solution adopted by the present invention to solve its technical problems: This cold running-in tooling for a swash plate type variable displacement compressor includes a tooling bottom plate, a pressing device, a rotating device, a pressing and rotating mechanism, and a running-in device. The pressing device includes a cylinder, a fixing plate, a nut, a floating joint, a sliding rod, a tension and compression top plate, a tension and compression side plate, a linear bearing, and a sliding plate. The cylinder is installed on the fixing plate. The floating joint is respectively connected to the piston on the cylinder and the tension and compression top plate. The tension and compression top plate is connected to the sliding plate through the tension and compression side plate. The sliding plate reciprocates on the sliding rod through the linear bearing. The rotating device includes a motor, a motor bracket, a synchronous belt, a synchronous pulley, and a driving shaft. The synchronous belt is fixed on the synchronous pulley, and the synchronous pulley is installed on the driving shaft. The pressing and rotating mechanism includes a main pressing plate, an angle air gun, and a transmission sleeve. The transmission sleeve is fixed on the driving shaft.

[0005] The motor is fixed on the sliding plate through the motor bracket, and the motor drives the synchronous pulley through the synchronous belt. This setting can drive the driving shaft to rotate.

[0006] There is a thrust bearing at the upper end of the driving shaft. The thrust bearing is connected to the floating joint through a spring, and the floating joint is fixed on the lower surface of the tension and compression top plate. This setting can ensure that the driving shaft can be relatively stable during rotation and does not produce large deviations due to the pre-tightening elastic force of the spring.

[0007] A cold running head is sleeved on the main shaft of the compressor. When the main pressing plate on the pressing and rotating mechanism contacts the end face of the variable displacement compressor, the angle air gun on the pressing and rotating mechanism contacts and cooperates with the cold running head. This setting enables the main shaft of the compressor to perform a rotational motion when the driving shaft rotates.

[0008] The running-in device is fixed on the tooling base plate. There is a positioning pin on the running-in device, and there are several buffer push heads, one running-in push head, and three compression sliding rods on the end face of the running-in device. The number of buffer push heads is the same as the number of cylinder holes on the compressor.

[0009] The distribution positions of the buffer push heads correspond to the positions of the cylinder holes of the variable displacement compressor. The bottom of the buffer push head is connected to a telescopic spring. The running-in push head is matched with the main shaft hole of the compressor, and a return spring is fixed at the upper end of the compression sliding rod. With such a setting, it is ensured that the upper part of the running-in device can automatically reset after being compressed.

[0010] The running-in device has an upper part and a lower part of the running-in device. The distance between the lower surface of the upper part of the running-in device and the upper surface of the lower part of the running-in device is equal to the distance between the highest point and the lowest point of the swash plate at the maximum tilt angle.

[0011] The beneficial effect of the present invention is that the cold running-in tooling for the swash plate type variable displacement compressor of the present invention can run-in the cylinder holes and pistons of the swash plate type variable displacement compressor, enabling the pistons to reciprocate in the cylinder holes of the compressor. Place the compressor on the tooling base plate, first start the cylinder to press the variable displacement compressor tightly, the swash plate deflects to the maximum angle, that is, the maximum working stroke, and then start the motor to drive the drive shaft to rotate, thereby driving the main shaft of the compressor to rotate. At the same time, the pistons of the compressor reciprocate in the cylinder holes and continuously run-in. The whole process can be automatically completed, with high running-in efficiency, which can improve the service life of the compressor, good use effect, and is conducive to popularization. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0013] Figure 2 is a schematic cross-sectional structural diagram of an embodiment of the present invention;

[0014] Figure 3 is a schematic structural diagram of the running-in device of an embodiment of the present invention;

[0015] Figure 4 is a schematic structural diagram of the running-in device of an embodiment of the present invention.

[0016] Description of the reference numerals: tooling bottom plate 1, pressing device 2, cylinder 21, fixed plate 22, nut 23, floating joint 24, sliding rod 25, tension and compression top plate 26, tension and compression side plate 27, linear bearing 28, sliding plate 29, rotating device 3, motor 31, motor bracket 32, synchronous pulley 33, synchronous belt 34, drive shaft 35, pressure conversion mechanism 4, transmission sleeve 41, pneumatic impact wrench 42, main pressing plate 43, spring 5, running-in device 6, positioning pin 61, running-in head 62, buffer head 63, compression sliding rod 64, return spring 65, telescopic spring 66, upper part of the running-in device 67, lower part of the running-in device 68, swash plate type variable displacement compressor 7, cold running head 8, floating joint 9, thrust bearing 10. Detailed implementation mode

[0017] The present invention will be further described below with reference to the accompanying drawings:

[0018] Referring to the accompanying drawings: The cold running and running-in tooling for the swash plate type variable displacement compressor in this embodiment includes a tooling bottom plate 1, a pressing device 2, a rotating device 3, a pressure conversion mechanism 4, and a running-in device 6. The pressing device 2 includes a cylinder 21, a fixed plate 22, a nut 23, a floating joint 24, a sliding rod 25, a tension and compression top plate 26, a tension and compression side plate 27, a linear bearing 28, and a sliding plate 29. The cylinder 21 is installed on the fixed plate 22. The floating joint 24 is respectively connected to the piston on the cylinder 21 and the tension and compression top plate 26. The tension and compression top plate 26 is connected to the sliding plate 29 through the tension and compression side plate 27. The sliding plate 29 reciprocates on the sliding rod 25 through the linear bearing 28. The rotating device 3 includes a motor 31, a motor bracket 32, a synchronous belt 34, synchronous pulleys 33, and a drive shaft 35. The synchronous belt 34 is fixed on the synchronous pulleys 33. The synchronous pulleys 33 are installed on the drive shaft 35. The pressure conversion mechanism 4 includes a main pressing plate 43, a pneumatic impact wrench 42, and a transmission sleeve 41. The transmission sleeve 41 is fixed on the drive shaft 35.

[0019] The motor 31 is fixed on the sliding plate 29 through the motor bracket 32. The motor 31 drives the synchronous pulley 33 through the synchronous belt 34.

[0020] There is a thrust bearing 10 at the upper end of the drive shaft 35. The thrust bearing 10 is connected to the floating joint 24 through a spring 5. The floating joint 24 is fixed on the lower surface of the tension and compression top plate 26.

[0021] A cold running head 8 is sleeved on the main shaft of the compressor. When the main pressing plate 43 on the pressure conversion mechanism 4 contacts the end face of the variable displacement compressor, the pneumatic impact wrench 42 on the pressure conversion mechanism 4 contacts and cooperates with the cold running head 8.

[0022] The running-in device 6 is fixed on the tooling bottom plate 1. There is a positioning pin 61 on the running-in device 6. There are several buffer heads 63, one running-in head 62, and three compression sliding rods 64 on the end face of the running-in device 6. The number of buffer heads 63 is the same as the number of cylinder holes on the compressor.

[0023] The distribution position of the buffer head 63 corresponds to the cylinder hole position of the variable displacement compressor. The bottom of the buffer head 63 is connected to the telescopic spring 66. The running-in head 62 is fitted with the main shaft hole of the compressor, and a return spring 65 is fixed to the upper end of the compression slide rod 64.

[0024] The running-in device 6 has an upper part 67 and a lower part 68 of the running-in device. The distance between the lower surface of the upper part 67 of the running-in device and the upper surface of the lower part 68 of the running-in device is equal to the distance between the highest point and the lowest point of the swash plate at the maximum tilt angle.

[0025] During cold running-in, place the swash plate type variable displacement compressor on the upper surface of the running-in device, start the cylinder to press the compressor tightly. The buffer head in the running-in device presses against the piston of the compressor, so that the swash plate inside the compressor is deflected to the maximum angle, that is, the maximum working stroke. Then start the motor to drive the drive shaft to rotate, and then drive the main shaft of the compressor to rotate. The main shaft drives the swash plate to rotate, and the piston reciprocates in the cylinder hole to continuously carry out running-in. After the running-in is completed, turn off the motor, the cylinder resets, and the upper part of the running-in device resets. Repeat the above process to carry out the running-in of the next compressor.

[0026] The features of the embodiment of the present invention are as follows: It can run-in the cylinder hole and piston of the swash plate type variable displacement compressor, make the piston reciprocate in the cylinder hole of the compressor, place the compressor on the tooling bottom plate, first start the cylinder to press the variable displacement compressor tightly, the swash plate is deflected to the maximum angle, that is, the maximum working stroke, then start the motor to drive the drive shaft to rotate, and then drive the main shaft of the compressor to rotate. At the same time, the piston of the compressor reciprocates in the cylinder hole to continuously carry out running-in. The whole process can be automatically completed, with high running-in efficiency, which can improve the service life of the compressor, has good use effect and is conducive to popularization.

[0027] Although the present invention has been illustrated and described by referring to the preferred embodiments, those of ordinary skill in the art should understand that various changes in form and details can be made within the scope of the claims.

Claims

1. A cold running-in tooling for a swash plate type variable displacement compressor, characterized in that: It includes a tooling base plate (1), a pressing device (2), a rotating device (3), a pressing and rotating mechanism (4), and a running-in device (6). The pressing device (2) includes a cylinder (21), a fixing plate (22), a nut (23), a floating joint (24), a sliding rod (25), a pulling and pressing top plate (26), a pulling and pressing side plate (27), a linear bearing (28), and a sliding plate (29). The cylinder (21) is installed on the fixing plate (22). The floating joint (24) is respectively connected to the piston on the cylinder (21) and the pulling and pressing top plate (26). The pulling and pressing top plate (26) is connected to the sliding plate (29) through the pulling and pressing side plate (27). The sliding plate (29) reciprocates on the sliding rod (25) through the linear bearing (28). The rotating device (3) includes a motor (31), a motor bracket (32), a synchronous belt (34), a synchronous pulley (33), and a driving shaft (35). The synchronous belt (34) is fixed on the synchronous pulley (33). The synchronous pulley (33) is installed on the driving shaft (35). The pressing and rotating mechanism (4) includes a main pressing plate (43), an angle air gun (42), and a transmission sleeve (41). The transmission sleeve (41) is fixed on the driving shaft (35). The running-in device (6) is fixed on the tooling base plate (1). There is a positioning pin (61) on the running-in device (6). There are several buffer top heads (63), a running-in top head (62), and three compression sliding rods (64) on the end face of the running-in device (6). The number of the buffer top heads (63) is the same as the number of cylinder holes on the compressor. The distribution positions of the buffer top heads (63) correspond to the cylinder hole positions of the variable displacement compressor. The bottom of the buffer top head (63) is connected to a telescopic spring (66). The running-in top head (62) is matched with the main shaft hole of the compressor. A return spring (65) is fixed at the upper end of the compression sliding rod (64); The running-in device (6) has an upper part of the running-in device (67) and a lower part of the running-in device (68). The distance between the lower surface of the upper part of the running-in device (67) and the upper surface of the lower part of the running-in device (68) is equal to the distance between the highest point and the lowest point of the swash plate when the swash plate is at the maximum tilt angle.

2. The cold running-in tooling for a swash plate type variable displacement compressor according to claim 1, wherein: The motor (31) is fixed on the sliding plate (29) through the motor bracket (32). The motor (31) drives the synchronous pulley (33) through the synchronous belt (34).

3. The cold running-in tooling for the swash plate type variable displacement compressor according to claim 1, characterized in that: There is a thrust bearing (10) at the upper end of the driving shaft (35). The thrust bearing (10) is connected to the floating joint (24) through a spring (5). The floating joint (24) is fixed on the lower surface of the pulling and pressing top plate (26).

4. The cold running-in tooling for the swash plate type variable displacement compressor according to claim 1, wherein: A cold running head (8) is sleeved on the main shaft of the compressor. When the main pressing plate (43) on the pressing and rotating mechanism (4) contacts the end face of the variable displacement compressor, the angle air gun (42) on the pressing and rotating mechanism (4) contacts and cooperates with the cold running head (8).

Images