An oil seal or ring assembly mechanism

Abstract

This utility model discloses an oil seal or sealing ring assembly mechanism, comprising a Z-axis drive module, a hollow push rod mounted on and driven by the Z-axis drive module to be fitted onto the outside of a motor shaft, a pressure plate fitted onto the hollow push rod, and a lifting drive module mounted on the Z-axis drive module to drive the pressure plate to move relative to the hollow push rod, thereby moving the oil seal or sealing ring fitted onto the hollow push rod to be fitted into a groove outside the motor shaft. The hollow push rod has a slot for the motor shaft to pass through, and a bearing position for the pressure plate and the oil seal or sealing ring to be fitted onto it. This utility model uses the Z-axis drive module to drive the hollow push rod to be fitted onto the outer periphery of the motor shaft end, and then the lifting drive module drives the pressure plate to move relative to the hollow push rod to push the oil seal or sealing ring to the outside of the motor shaft to complete the assembly. The entire process involves few steps, a simple structure, few parts, low cost, and high assembly efficiency.

Description

Technical fields:

[0001] This utility model relates to the field of automation technology, and specifically to an oil seal or sealing ring assembly mechanism. Background technology:

[0002] Sealing rings are elastic ring-shaped components used in many applications requiring sealing. Current research focuses on the assembly of sealing rings for motors. This process involves manual assembly: a sealing ring is manually taken, fitted onto a fixture to enlarge its diameter, and then manually assembled onto the component. Existing sealing ring assembly methods are slow and inefficient. Relying on manual alignment results in poor assembly accuracy and increases the defect rate of assembled products.

[0003] Chinese invention patent application No. 202410863335.X discloses a sealing ring assembly machine, comprising: a machine base; a first feeding mechanism for automatic O-ring feeding; a second feeding mechanism for valve stem feeding; a synchronous assembly conveying mechanism disposed on one side of the first feeding mechanism, the synchronous assembly conveying mechanism including a first displacement device for longitudinal and lateral movement, a first manipulator connected to the first displacement device, and an assembly device for assembling O-rings and valve stems; a valve stem conveying mechanism disposed on one side of the second feeding mechanism, the valve stem conveying mechanism being provided with a third manipulator for gripping and conveying valve stems; an auxiliary working mechanism disposed between the valve stem conveying mechanism and the synchronous assembly conveying mechanism, the auxiliary working mechanism being provided with a worktable for accommodating valve stems; and a first discharge guide groove disposed below the synchronous assembly conveying mechanism. This invention achieves automated assembly of O-rings, improves production efficiency, and reduces production costs for enterprises.

[0004] However, the assembly device is equipped with an elastic expansion component that can push and open the O-ring. The assembly device must work with the elastic expansion component to assemble the O-ring onto the valve stem. However, the elastic expansion component has an extremely complex structure, many parts, high cost, and relatively many operation steps, which is not conducive to improving assembly efficiency.

[0005] In view of the above, the inventors propose the following technical solution. Utility Model Content:

[0006] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an oil seal or sealing ring assembly mechanism.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: the oil seal or sealing ring assembly mechanism includes a Z-axis drive module, a hollow push rod mounted on the Z-axis drive module and driven by the Z-axis drive module to be sleeved on the outside of the motor shaft, a pressure plate sleeved on the outside of the hollow push rod, and a lifting drive module mounted on the Z-axis drive module for driving the pressure plate to move relative to the hollow push rod to drive the oil seal or sealing ring sleeved on the hollow push rod to be sleeved in a groove outside the motor shaft. The hollow push rod is provided with a slot for the motor shaft to pass through, and the hollow push rod is provided with a bearing position for the pressure plate and the oil seal or sealing ring to be sleeved.

[0008] Furthermore, in the above technical solution, the hollow push rod is provided with a tapered guide surface that is smaller at the top and larger at the bottom on the upper part of the bearing position.

[0009] Furthermore, in the above technical solution, the Z-axis drive module is a slide electric cylinder, and the hollow push rod is installed on the first slide of the slide electric cylinder in a detachable and replaceable manner; the lifting drive module is a slide cylinder, and the pressure plate is installed on the second slide of the slide cylinder in a detachable and replaceable manner.

[0010] Furthermore, in the above technical solution, the pressure plate has a through hole sleeved on the outside of the hollow push rod, and the pressure plate has an annular protrusion that protrudes upward at the opening of the through hole and is used to contact the lower end face of the oil seal or sealing ring.

[0011] Furthermore, in the above technical solution, the motor shaft is installed inside the motor body, the motor body is positioned on the fixture, and the motor shaft extends downward from the lower end face of the fixture; the fixture is set on the transmission chain and can be driven by the transmission chain to move; the transmission chain is installed on the frame and distributed along the X-axis direction.

[0012] Furthermore, in the above technical solution, the frame is provided with a vibratory feeder module for feeding oil seals or sealing rings, and the frame is also provided with an automatic material handling and loading device for picking up the oil seals or sealing rings fed by the vibratory feeder module and fitting them onto the bearing position of the hollow push rod.

[0013] Furthermore, in the above technical solution, the vibratory feeder loading module includes a vibratory feeder mounted on the frame and a loading platform that docks with the material rail of the vibratory feeder. The loading platform is located below the automatic material handling and loading device.

[0014] Furthermore, in the above technical solution, the XYZ axis automatic material handling and loading device includes a gantry frame mounted on the frame and spanning the transmission chain, a Y-axis linear module mounted on the gantry frame, a Z-axis linear module mounted on the Y-axis linear module and driven by the Y-axis linear module to move in the Y-axis direction, a Z-axis lifting frame mounted on the Z-axis linear module and driven by the Z-axis linear module to move in the Z-axis direction, and a picking module mounted on the Z-axis lifting frame for picking up positioning oil seals or sealing rings.

[0015] Furthermore, in the above technical solution, the Z-axis lifting frame is also equipped with a CCD detection module for identifying the front and back of the oil seal or sealing ring.

[0016] Furthermore, in the above technical solution, the oil seal or sealing ring assembly mechanism is installed in the frame in a detachable and replaceable manner and is located below the fixture.

[0017] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: In specific use, the oil seal or sealing ring is fitted onto the bearing position of the hollow push rod and abuts against the pressure plate. Then, the Z-axis drive module drives the hollow push rod, the lifting drive module, and the pressure plate to move synchronously. The groove on the hollow push rod is fitted onto the periphery of the motor shaft end, that is, the motor shaft end is embedded in the groove on the hollow push rod. Finally, the lifting drive module drives the pressure plate to move relative to the hollow push rod, so as to drive the oil seal or sealing ring fitted on the hollow push rod to move, thereby pushing the oil seal or sealing ring to the outside of the motor shaft until the oil seal or sealing ring is fitted into the groove outside the motor shaft, thus completing the assembly of the oil seal or sealing ring onto the motor shaft. The whole process has few steps, the whole structure is simple, there are few parts, the cost is low, and the assembly efficiency is high, so it has a high market competitiveness. Furthermore, because a hollow push rod is embedded in the end of the motor shaft, the oil seal or sealing ring will not be scratched by the sharp edge of the motor shaft end during the process of being pushed by the pressure plate, thus ensuring the quality of the oil seal or sealing ring and consequently ensuring the assembly quality. Attached image description:

[0018] Figure 1 This is an assembly diagram of this utility model;

[0019] Figure 2 This is an assembly drawing of the present invention with an oil seal or sealing ring;

[0020] Figure 3 This is a diagram showing the usage state of this utility model;

[0021] Figure 4 This is an assembly drawing of the oil seal or sealing ring and the fixture in this utility model;

[0022] Figure 5 This is a perspective view of the fixture in this utility model. Detailed implementation method:

[0023] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0024] See Figure 1-5 As shown, this is an oil seal or sealing ring assembly mechanism, which includes a Z-axis drive module 1, a hollow push rod 2, a pressure plate 3, and a lifting drive module 4.

[0025] The hollow push rod 2 is mounted on the Z-axis drive module 1 and driven by the Z-axis drive module 1 to be sleeved on the outside of the motor shaft 51. The pressure plate 3 is sleeved on the outside of the hollow push rod 2 and can move up and down outside the hollow push rod 2. The lifting drive module 4 is mounted on the Z-axis drive module 1 and is used to drive the pressure plate 3 to move relative to the hollow push rod 2 so as to drive the oil seal or sealing ring 52 sleeved on the hollow push rod 2 to move and be sleeved in the groove 511 outside the motor shaft 51. The hollow push rod 2 is provided with a slot 20 for the motor shaft 51 to pass through, and the hollow push rod 2 is provided with a bearing position 21 for the pressure plate 3 and the oil seal or sealing ring 52 to be sleeved. The pressure plate 3 is sleeved on the bearing position 21 outside the hollow push rod 2. In practical use, the oil seal or sealing ring 52 is fitted onto the bearing position 21 of the hollow push rod 2 and abuts against the pressure plate 3. Then, the Z-axis drive module 1 drives the hollow push rod 2, the lifting drive module 4, and the pressure plate 3 to move synchronously. The groove 20 on the hollow push rod 2 is fitted onto the periphery of the end of the motor shaft 51, that is, the end of the motor shaft 51 is embedded in the groove 20 on the hollow push rod 2. Finally, the lifting drive module 4 drives the pressure plate 3 to move relative to the hollow push rod 2, thereby driving the oil seal or sealing ring 52 fitted onto the hollow push rod 2 to move, and thus push the oil seal or sealing ring 52 to the outside of the motor shaft 51 until the oil seal or sealing ring 52 is fitted into the groove 511 on the outside of the motor shaft 51. This completes the assembly of the oil seal or sealing ring 52 onto the motor shaft 51. The whole process has few steps, a simple structure, few parts, low cost, and high assembly efficiency, thus having high market competitiveness. Furthermore, since the hollow push rod 2 is embedded in the end of the motor shaft 51, the oil seal or sealing ring 52 will not be scratched by the sharp edge of the end of the motor shaft 51 during the process of being pushed by the pressure plate 3, thus ensuring the quality of the oil seal or sealing ring 52 and thereby ensuring the assembly quality.

[0026] In this embodiment, the step of fitting the oil seal or sealing ring 52 onto the bearing position 21 of the hollow push rod 2 can be done manually.

[0027] The Z-axis drive module 1 is a slide-table electric cylinder, which has a simple structure, stable movement, and high operating precision. The hollow push rod 2 is detachably and replaceably mounted on the first slide 11 of the slide-table electric cylinder. When it is necessary to install oil seals or sealing rings of different sizes on motor shafts of different sizes, the hollow push rod 2 can be removed from the first slide 11 to replace it with a hollow push rod of a suitable size to meet different assembly requirements. Furthermore, the lifting drive module 4 is a slide-table pneumatic cylinder, and the pressure plate 3 is detachably and replaceably mounted on the second slide 41 of the slide-table pneumatic cylinder. When it is necessary to install oil seals or sealing rings of different sizes on motor shafts of different sizes, the pressure plate 3 can be removed from the second slide 41 to replace it with a pressure plate 3 of a suitable size to meet different assembly requirements.

[0028] To ensure smoother operation of the oil seal or sealing ring 52 after it is fitted onto the bearing position 21 of the hollow push rod 2, and to ensure that the oil seal or sealing ring 52 is in an outwardly stretched state, the following design is implemented: The hollow push rod 2 has a tapered guide surface 22, smaller at the top and larger at the bottom, located on the upper part of the bearing position 21. During assembly, the oil seal or sealing ring 52 is first fitted onto the tapered guide surface 22 and pressed downwards. As the size of the tapered guide surface 22 increases, the oil seal or sealing ring 52 is gradually expanded and stretched. This ensures that after the oil seal or sealing ring 52 is fitted onto the bearing position 21 of the hollow push rod 2, it is in an outwardly stretched state, and the entire assembly process is extremely smooth.

[0029] The specific mechanism of the pressure plate 3 is described below. The pressure plate 3 has a very simple structure. It is a flat plate. The pressure plate 3 has a through hole 31 that is sleeved on the outside of the hollow push rod 2. The pressure plate 3 has an annular protrusion 32 that protrudes upward at the opening of the through hole 31 and is used to contact the lower end face of the oil seal or sealing ring 52. The annular protrusion 32 directly contacts the lower end face of the oil seal or sealing ring 52 to ensure the contact area. So that after the pressure plate 3 moves upward, the oil seal or sealing ring 52 is lifted by the annular protrusion 32, which can drive the oil seal or sealing ring 52 to move more stably and facilitate the assembly of the oil seal or sealing ring 52.

[0030] In practical use, the motor shaft 51 is installed inside the motor body 5, which is positioned on the fixture 50. The motor shaft 51 extends from top to bottom at the lower end face of the fixture 50, which facilitates the movement of the hollow push rod 2 by the Z-axis drive module 1 in the later stage. The slot 20 on the hollow push rod 2 can be fitted around the end of the motor shaft 51.

[0031] Furthermore, the fixture 50 is mounted on the transmission chain 60 and can be driven by the transmission chain 60 to move, thereby continuously conveying the motor shaft 51 to the oil seal or sealing ring assembly mechanism, which then assembles the oil seal or sealing ring onto the motor shaft 51, resulting in higher production efficiency. The transmission chain 60 is mounted on the frame 6 and distributed along the X-axis. The oil seal or sealing ring assembly mechanism is detachably and replaceably mounted within the frame 6 and located below the fixture 50.

[0032] In some other embodiments, the frame 6 is equipped with a vibratory feeder module 7 for feeding oil seals or sealing rings 52. The frame 6 is also equipped with an automatic loading and unloading device 8 for picking up the oil seals or sealing rings 52 fed by the vibratory feeder module 7 and placing them onto the bearing position 21 of the hollow push rod 2. The oil seals or sealing rings 52 can be fed, and the automatic loading and unloading device 8 picks up the oil seals or sealing rings 52 fed by the vibratory feeder module 7 and places them onto the bearing position 21 of the hollow push rod 2, thereby achieving automatic feeding.

[0033] The vibratory feeder module 7 includes a vibratory feeder 71 mounted on a frame 6 and a feeding platform 72 that docks with the material rail 711 of the vibratory feeder 71. The feeding platform 72 is located below the automatic material handling and loading device 8.

[0034] The XYZ axis automatic material handling and loading device 8 includes a gantry frame 81 mounted on the frame 6 and spanning the transmission chain 60, a Y-axis linear module 82 mounted on the gantry frame 81, a Z-axis linear module 83 mounted on the Y-axis linear module 82 and driven by the Y-axis linear module 82 to move in the Y-axis direction, a Z-axis lifting frame 84 mounted on the Z-axis linear module 83 and driven by the Z-axis linear module 83 to move in the Z-axis direction, and a pickup module 85 mounted on the Z-axis lifting frame 84 for picking up and positioning oil seals or sealing rings 52. The Z-axis linear module 83 and the Y-axis linear module 82 drive the pickup module 85 to move so that the oil seal or sealing ring 52 picked up and positioned by the pickup module 85 is fitted onto the bearing position 21 of the hollow push rod 2. This reduces manual labor, lowers labor intensity, and improves work efficiency.

[0035] The Z-axis lifting frame 84 is also equipped with a CCD detection module 86 for identifying the front and back of the oil seal or sealing ring 52. This CCD detection module 86 can identify the front and back of the oil seal or sealing ring 52, and then cooperate with the picking module 85 of the XYZ axis automatic material handling and loading device 8 to pick up the oil seal or sealing ring 52 with the front facing up, so as to achieve the purpose of automatic material loading and its working efficiency is higher.

[0036] In summary, in practical use, the oil seal or sealing ring 52 is fitted onto the bearing position 21 of the hollow push rod 2 and abuts against the pressure plate 3. Then, the Z-axis drive module 1 drives the hollow push rod 2, the lifting drive module 4, and the pressure plate 3 to move synchronously. The groove 20 on the hollow push rod 2 is fitted onto the periphery of the end of the motor shaft 51, that is, the end of the motor shaft 51 is embedded in the groove 20 on the hollow push rod 2. Finally, the lifting drive module 4 drives the pressure plate 3 to move relative to the hollow push rod 2, thereby driving the oil seal or sealing ring 52 fitted onto the hollow push rod 2 to move, and thus push the oil seal or sealing ring 52 to the outside of the motor shaft 51 until the oil seal or sealing ring 52 is fitted into the groove 511 on the outside of the motor shaft 51. This completes the assembly of the oil seal or sealing ring 52 onto the motor shaft 51. The whole process has few steps, a simple structure, few parts, low cost, and high assembly efficiency, thus having high market competitiveness. Furthermore, since the hollow push rod 2 is embedded in the end of the motor shaft 51, the oil seal or sealing ring 52 will not be scratched by the sharp edge of the end of the motor shaft 51 during the process of being pushed by the pressure plate 3, thus ensuring the quality of the oil seal or sealing ring 52 and thereby ensuring the assembly quality.

[0037] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. An oil seal or sealing ring assembly mechanism, characterized in that: It includes a Z-axis drive module (1), a hollow push rod (2) mounted on the Z-axis drive module (1) and driven by the Z-axis drive module (1) to be sleeved on the outside of the motor shaft (51), a pressure plate (3) sleeved on the outside of the hollow push rod (2), and a lifting drive module (4) mounted on the Z-axis drive module (1) for driving the pressure plate (3) to move relative to the hollow push rod (2) to drive the oil seal or sealing ring (52) sleeved on the hollow push rod (2) to move to be sleeved in the groove (511) outside the motor shaft (51). The hollow push rod (2) is provided with a slot (20) for the motor shaft (51) to pass through, and the hollow push rod (2) is provided with a bearing position (21) for the pressure plate (3) and the oil seal or sealing ring (52) to be sleeved.

2. The oil seal or sealing ring assembly mechanism according to claim 1, characterized in that: The hollow push rod (2) has a tapered guide surface (22) that is smaller at the top and larger at the bottom on the upper part of the bearing position (21).

3. The oil seal or sealing ring assembly mechanism according to claim 1, characterized in that: The Z-axis drive module (1) is a slide electric cylinder, and the hollow push rod (2) is installed on the first slide (11) of the slide electric cylinder in a detachable and replaceable manner; the lifting drive module (4) is a slide cylinder, and the pressure plate (3) is installed on the second slide (41) of the slide cylinder in a detachable and replaceable manner.

4. The oil seal or sealing ring assembly mechanism according to claim 1, characterized in that: The pressure plate (3) has a through hole (31) sleeved on the outside of the hollow push rod (2). The pressure plate (3) has an annular protrusion (32) that protrudes upward and is used to contact the lower end face of the oil seal or sealing ring (52) at the opening of the through hole (31).

5. An oil seal or sealing ring assembly mechanism according to any one of claims 1-4, characterized in that: The motor shaft (51) is installed inside the motor body (5), which is positioned on the fixture (50). The motor shaft (51) extends downward from the lower end face of the fixture (50). The fixture (50) is set on the transmission chain (60) and can be driven by the transmission chain (60) to move. The transmission chain (60) is installed on the frame (6) and distributed along the X-axis.

6. The oil seal or sealing ring assembly mechanism according to claim 5, characterized in that: The frame (6) is provided with a vibratory feeder module (7) for feeding oil seals or sealing rings (52). The frame (6) is also provided with an automatic material handling and loading device (8) for picking up the oil seals or sealing rings (52) fed by the vibratory feeder module (7) and fitting them onto the bearing position (21) of the hollow push rod (2).

7. The oil seal or sealing ring assembly mechanism according to claim 6, characterized in that: The vibratory feeder module (7) includes a vibratory feeder (71) mounted on a frame (6) and a feeding platform (72) connected to the material rail (711) of the vibratory feeder (71). The feeding platform (72) is located below the automatic material handling and loading device (8).

8. The oil seal or sealing ring assembly mechanism according to claim 6, characterized in that: The automatic material handling and loading device (8) includes a gantry (81) mounted on the frame (6) and spanning the conveyor chain (60), a Y-axis linear module (82) mounted on the gantry (81), a Z-axis linear module (83) mounted on the Y-axis linear module (82) and driven by the Y-axis linear module (82) to move in the Y-axis direction, a Z-axis lifting frame (84) mounted on the Z-axis linear module (83) and driven by the Z-axis linear module (83) to move in the Z-axis direction, and a picking module (85) mounted on the Z-axis lifting frame (84) for picking up positioning oil seals or sealing rings (52).

9. The oil seal or sealing ring assembly mechanism according to claim 8, characterized in that: The Z-axis lifting frame (84) is also equipped with a CCD detection module (86) for identifying the front and back of the oil seal or sealing ring (52).

10. The oil seal or sealing ring assembly mechanism according to claim 7, characterized in that: The oil seal or sealing ring assembly mechanism is installed in the frame (6) in a detachable and replaceable manner and is located below the fixture (50).

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