Axial seal press fitting device

Abstract

The application provides an axial sealing ring press-fitting device, comprising a control unit, a feeding unit and a material taking and press-fitting unit, the feeding unit is provided with a positioning sleeve, a pushing mechanism and a sealing ring sensor, the pushing mechanism has an initial position and a feeding position, the positioning sleeve has a feeding position, and an upstream process can deliver a sealing ring to the feeding position; the material taking and press-fitting unit is provided with a pressing mechanism and a guide sleeve, the guide sleeve can move to the surface of the feeding position under the control of the control unit, at this time, the pushing mechanism moves from the initial position to the feeding position and then returns to the initial position, so that the sealing ring is sent into the guide sleeve; the guide sleeve with the sealing ring is driven to move to a target piece, and the sealing ring in the guide sleeve is assembled into a sealing ring groove of the target piece through the pressing mechanism. The application can realize the automatic and accurate assembly function of the sealing ring, has good universality and low cost.

Description

Technical Field

[0001] This invention relates to the field of automated valve body assembly, and more specifically, to an axial sealing ring press-fitting device. Background Technology

[0002] Flexible manufacturing and intelligent manufacturing are being widely applied in factory workshops, and the post-assembly processing of valve bodies is a crucial part of automated production. Traditional valve body sealing ring assembly is done manually, which is difficult to meet the needs of automated production. Therefore, an automated installation device for valve body sealing ring assembly needs to be developed.

[0003] The automated installation equipment on the market is mainly for installing seals on single workpieces, or for assembling seals on shafts and cylinders. There is no mature solution for installing seals on the large flat surface of valve bodies. Furthermore, the irregular state of the oil passage hole in the center of the seal groove further increases the design difficulty. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide an axial sealing ring press-fitting device.

[0005] An axial sealing ring press-fitting device according to the present invention includes:

[0006] Control unit;

[0007] The feeding unit is equipped with a positioning sleeve, a pushing mechanism and a sealing ring sensor. The pushing mechanism has an initial position and a feeding position. The positioning sleeve has a loading position. The upstream process can transport the sealing ring to the loading position and the sealing ring sensor can feed back the material level information collected at the loading position to the control unit.

[0008] The material handling and pressing unit is equipped with a pressing mechanism and a guide sleeve. Under the control of the control unit, the guide sleeve can move to the material loading surface and perform the following actions in sequence:

[0009] Action 1: The pushing mechanism moves from the initial position to the feeding position and then returns to the initial position, causing the sealing ring to be fed into the guide sleeve;

[0010] Action 2: Drive the guide sleeve with the sealing ring to the target part and assemble the sealing ring in the guide sleeve into the sealing ring groove of the target part through the pressing mechanism.

[0011] Preferably, the pushing mechanism includes a push rod cylinder and a fixed support. The positioning sleeve and the push rod cylinder are both mounted on the fixed support. The push rod cylinder is driven and connected to the sealing ring push rod. The end of the sealing ring push rod extends into the interior of the positioning sleeve.

[0012] When the sealing ring push rod is in the initial position, the end of the sealing ring push rod and the positioning sleeve together form the loading position.

[0013] Preferably, it also includes a feeding unit, which includes a vibrating feeder and a material guide rail. The vibrating feeder can transport the sealing ring to the loading position through the material guide rail by vibration.

[0014] Preferably, the material handling and pressing unit includes a base plate and a guide seat arranged on the base plate, and the pressing mechanism includes a guide shaft and a material handling and pressing cylinder arranged on the base plate. The material handling and pressing cylinder can drive the guide shaft to move in the axial direction so that the sealing ring is assembled into the sealing ring groove. The guide shaft passes through the guide seat and slides with the guide seat.

[0015] Preferably, a position sensor is provided on the base plate, and the position sensor is used to collect the position of the guide shaft.

[0016] Preferably, the pressing mechanism further includes an adjusting nut, a guide sleeve spring, a limit sleeve spring, a limit sleeve, and a pressure plate;

[0017] The pressure plate is arranged at the end of the guide shaft, the adjusting nut is threaded onto the guide shaft, and a guide sleeve spring, a guide sleeve, a limit sleeve spring, and a limit sleeve are sequentially mounted on the guide shaft from the adjusting nut to the pressure plate.

[0018] When the guide shaft drives the guide sleeve to move to the surface of the target part, the bottom end of the guide sleeve is pressed against the surface of the target part, the spring of the guide sleeve is compressed and shortened, and the guide shaft drives the pressure plate to push the sealing ring toward the direction of the sealing ring groove. At this time, under the drive of the limit sleeve spring, the limit sleeve also moves toward the sealing ring groove and its end enters the sealing ring groove, and guides the pressure plate to push the sealing ring to be assembled into the sealing ring groove.

[0019] Preferably, the limiting sleeve and the guide sleeve are assembled by spline connection and have the same inner diameter.

[0020] Preferably, the sealing ring push rod and the positioning sleeve are splined and can slide within the positioning sleeve.

[0021] Preferably, the limiting sleeve spring and the limiting sleeve are fitted into the guide sleeve and their outer diameters are both smaller than the outer diameter of the sealing ring groove.

[0022] Preferably, the top end of the sealing ring push rod is tapered to guide the incoming sealing ring.

[0023] Preferably, the outer diameter of the spline of the sealing ring push rod is larger than the outer diameter of the sealing ring, and a V-shaped chamfered groove is formed between the outer circle of the sealing ring push rod and its own push rod center guide cone, and the bottom of the groove is an arc.

[0024] Preferably, the inlet of the guide sleeve is provided with a guide sleeve chamfer that matches the V-shaped chamfer structure. The interaction between the guide sleeve chamfer and the V-shaped chamfer structure can squeeze and push the sealing ring into the guide sleeve.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] This invention is applicable to the automated material handling and pressing of axial and end-face sealing rings. When installed on automated assembly equipment, it can realize the automated and precise assembly of sealing rings, with good versatility and low cost. Attached Figure Description

[0027] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0028] Figure 1 A schematic diagram of the feeding mechanism receiving the sealing ring;

[0029] Figure 2 for Figure 1 Top view of the structure;

[0030] Figure 3 This is a schematic diagram of the structure of the material handling and pressing unit when pressing the sealing ring;

[0031] Figure 4 for Figure 3 A schematic diagram of the front structure;

[0032] Figure 5 This is a schematic diagram of the internal structure of the material handling head;

[0033] Figure 6 This is a schematic diagram of the guide sleeve structure;

[0034] Figure 7 This is a schematic diagram of the sealing ring push rod.

[0035] The diagram shows:

[0036] 1-Incoming Material Guide Rail

[0037] 2-Sealing ring

[0038] 3-Sealing ring push rod

[0039] 31-Slot

[0040] 4-Positioning sleeve

[0041] 5-Pushrod Cylinder

[0042] 6-Fixed support

[0043] 7-Material loading and pressing cylinder

[0044] 8-Base Plate

[0045] 9-Guide Shaft

[0046] 10-Guide seat

[0047] 11-Adjusting Nut

[0048] 12-Guide sleeve spring

[0049] 13-Guide sleeve

[0050] 14-Position Sensor

[0051] 15-Limit sleeve spring

[0052] 16-Limiting sleeve

[0053] 17-Pressure plate

[0054] 18-Valve body

[0055] 181-Sealing ring groove Detailed Implementation

[0056] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0057] This invention provides an axial seal ring press-fitting device, which can solve the problem of automated axial seal ring press-fitting, addressing two technical challenges: material handling and press-fitting. Figures 1-5As shown, the system includes a control unit, a feeding unit 100, and a material handling and pressing unit 200. The feeding unit 100 is equipped with a positioning sleeve 4, a pushing mechanism, and a sealing ring sensor. The pushing mechanism has an initial position and a feeding position. The positioning sleeve 4 has a loading position. The upstream process can transport the sealing ring 2 to the loading position. Specifically, it also includes a feeding unit. The upstream process transports the sealing ring 2 to the loading position through the feeding unit. The feeding unit includes a vibrating feeder and an incoming guide rail 1. The incoming guide rail 1 has a certain slope. The vibrating feeder can transport the sealing ring 2 to the loading position through the incoming guide rail 1 by vibration. It should be noted that the loading position is formed by the positioning sleeve 4 and the sealing ring push rod 3. The top of the sealing ring push rod 3 is tapered to guide the incoming sealing ring 2. The sealing ring 2 that enters the loading position is located at the top of the sealing ring push rod 3. It is limited by the inner wall of the positioning sleeve 4 and thus arranged coaxially or nearly coaxially with the sealing ring push rod 3. The tapered bottom end is provided with a semi-circular groove to increase the contact area with the sealing ring 2. The sealing ring push rod 3 and the positioning sleeve 4 are connected by a spline and can slide in the positioning sleeve 4. The top of the spline of the sealing ring push rod 3 is chamfered, which is used to cooperate with the keyway of the guide sleeve 4 during the push rod feeding process to play a corrective role.

[0058] The sealing ring sensor can feed back the material level information collected at the loading position to the control unit. The material level information includes whether the sealing ring 2 is present or absent at the loading position. The sealing ring sensor can be a photoelectric sensor or a detection technology in the prior art, which will not be elaborated here. The material handling and pressing unit 200 is equipped with a pressing mechanism and a guide sleeve 13. When the material level information obtained by the control unit indicates that the sealing ring 2 is present at the loading position, the control unit outputs a material handling permission command. At this time, the servo mechanism drives the guide sleeve 13 in the material handling and pressing unit 200 to move to a position directly above the loading position, so that the guide sleeve 13 and the sealing ring push rod 3 are arranged coaxially. Preferably, the bottom end of the guide sleeve 13 is driven to contact the top end of the positioning sleeve 4, and the following actions are performed in sequence:

[0059] The control unit first controls the pushing mechanism to move from the initial position to the feeding position and then back to the initial position so that the sealing ring 2 is fed into the guide sleeve 13; the control unit then controls the servo mechanism to drive the guide sleeve 13 with the sealing ring 2 to the target part and uses the pressing mechanism to assemble the sealing ring 2 in the guide sleeve 13 into the sealing ring groove 181 of the target part, thus completing the assembly of the sealing ring 2. Specifically, the target part is preferably a valve body 18, etc.

[0060] like Figure 1 , Figure 2As shown, the feeding mechanism includes a push rod cylinder 5 and a fixed support 6. The positioning sleeve 4 and the push rod cylinder 5 are both mounted on the fixed support 6. The push rod cylinder 5 is driven to connect with the sealing ring push rod 3. The end of the sealing ring push rod 3 extends into the interior of the positioning sleeve 4. When the sealing ring push rod 3 is in the initial position, the end of the sealing ring push rod 3 and the positioning sleeve 4 together form the feeding position.

[0061] It should be noted that the part of the sealing ring pusher 3 that contacts the sealing ring 2 has an enveloping guide design. Specifically, the outer diameter of the spline of the sealing ring pusher 3 is larger than the outer diameter of the sealing ring 2. A V-shaped chamfered groove 31 is formed between the outer circle at the top of the spline of the sealing ring pusher 3 and the central guide cone. The bottom of the groove 31 is an arc design, completely enclosing the sealing ring 2 in the groove 31. This allows the incoming material to automatically fall into the bottom groove 31 of the sealing ring pusher 3 during the pushing process. During the process of pushing the sealing ring 2 to the guide sleeve 13, such as... Figure 6 , Figure 7 As shown, during the material taking action of the guide sleeve 13, the V-shaped chamfer of the sealing ring push rod 3 interacts with the chamfer of the guide sleeve at the entrance of the guide sleeve 13 to squeeze the sealing ring 2 into the guide sleeve 13. The entire matching structure protects the sealing ring 2 well and prevents the sealing ring 2 from being squeezed, deformed, or damaged during the pushing process.

[0062] like Figure 3 , Figure 4 , Figure 5As shown, the material handling and pressing unit 200 includes a base plate 8 and a guide seat 10 arranged on the base plate 8. The pressing mechanism includes a guide shaft 9, an adjusting nut 11, a guide sleeve spring 12, a limit sleeve spring 15, a limit sleeve 16, a pressure plate 17, and a material handling and pressing cylinder 7 arranged on the base plate 8. The base plate 8 is used to fix the material handling and pressing cylinder 7 and the guide seat 10. The material handling and pressing cylinder 7 can drive the guide shaft 9 to move in the axial direction, thereby assembling the sealing ring 2 into the sealing ring groove 181. The guide shaft 9 passes through the guide seat 10 and slides with the guide seat 10. A pressure plate 17 is located at the end of the guide shaft 9. An adjusting nut 11 is threaded onto the guide shaft 9. From the adjusting nut 11 to the pressure plate 17, a guide sleeve spring 12, a guide sleeve 13, a limiting sleeve spring 15, and a limiting sleeve 16 are sequentially mounted on the guide shaft 9. The pressure plate 17 can limit the movement stroke of the limiting sleeve 16. Both the limiting sleeve spring 15 and the limiting sleeve 16 are located inside the guide sleeve 13 and their outer diameters are smaller than the outer diameter of the sealing ring groove 181. The limiting sleeve 16 and the guide sleeve 13 are assembled via a spline joint and the inner... The diameters are equal; when the guide shaft 9 drives the guide sleeve 13 to move to the surface of the target part, the bottom end of the guide sleeve 13 is pressed against the surface of the target part, the guide sleeve spring 12 is compressed and deformed and becomes shorter, the guide shaft 9 drives the pressure plate 17 to push the sealing ring 2 towards the sealing ring groove 181, at this time the limit sleeve spring 15 elastically extends and can drive the lower limit sleeve 16 to also move towards the sealing ring groove 181 and the end enters the sealing ring groove 181 and guides the pressure plate 17 to push the sealing ring 2 to be assembled into the sealing ring groove 181.

[0063] The inner diameter of the guide sleeve 13 is smaller than the outer diameter of the sealing ring groove 181. It is designed with splines to cooperate with the sealing ring push rod 3 and the limiting sleeve 16. The entrance of the guide sleeve 13 is chamfered to facilitate the sealing ring push rod 3 to accurately and completely send the sealing ring 2 into the guide sleeve 13. The spline design avoids interference between the sealing ring push rod 3 and the limiting sleeve 16 during the process of sending the sealing ring 2 into the guide sleeve 13. Through the mutual squeezing action of the groove slope design of the sealing ring push rod 3 and the chamfer of the positioning sleeve 4, the sealing ring 2 is pushed into the guide sleeve 13. The spline design ensures that the sealing ring 2 is subjected to uniform force on all surfaces during the pushing process and will not be twisted or deformed.

[0064] Specifically, during the pressing process, the servo mechanism drives the guide sleeve 13 to precisely position itself in the sealing ring groove 181. The cylinder pushes the guide sleeve 13 to contact the mounting surface of the sealing groove 2. At this time, the material-removing pressing cylinder 7 continues to press down, driving the pressure plate 17 to push the sealing ring 2 into the sealing ring groove 181. During this process, the limiting sleeve spring 15 also pushes the limiting sleeve 16 down, so that the limiting sleeve 16 contacts the mounting surface of the sealing ring groove before the pressure plate 17. The pressure plate 17 continues to press down until the sealing ring 2 is pushed into the sealing ring groove 181. The inner diameter of the limiting sleeve 16 is smaller than the inner diameter of the sealing ring groove 181, which ensures that the sealing ring 2 can smoothly enter the sealing ring groove 181 during the pressing process of the pressure plate 17.

[0065] Specifically, the inner diameters of the positioning sleeve 4 and the limiting sleeve 16 are smaller than the outer diameter of the sealing ring groove 181. This reduces the impact of machining errors in the sealing ring 2 and the machining and positioning errors in the sealing ring groove 181 on the pressing of the sealing ring 2, thus providing a certain degree of tolerance. The chamfered inlet design of the positioning sleeve 4 mainly solves the problem of the sealing ring 2 getting stuck or bitten during the feeding process. The design of the limiting sleeve 16 mainly solves the problem of correctly guiding the sealing ring 2 into the sealing ring groove 181 during the pressing process, avoiding the influence of the chamfered inlet of the positioning sleeve 4.

[0066] Specifically, a position sensor 14 is provided on the base plate 8. The position sensor 14 is used to collect the position of the guide shaft 9 and connect it to the control unit signal. The obtained position signal is fed back to the control unit in real time. The position signal can be used to confirm whether the sealing ring 2 is installed in the sealing ring groove 181.

[0067] The working principle of this invention is as follows:

[0068] During feeding, the push rod cylinder 5 retracts first, and the equipment's vibrating feeder sends the sealing ring 2 into the feeding position of the positioning sleeve 4 via the material guide rail 1, waiting for the material handling and pressing unit to pick it up. After receiving the material handling permission command, the servo mechanism drags the material handling and pressing unit above the material handling positioning sleeve 4. The action of the material handling and pressing cylinder 7, through the action of the guide shaft 9 and the guide sleeve spring 12, presses the guide sleeve 13 onto the surface of the material handling position of the positioning sleeve 4. After the guide sleeve 4 is pressed into place, it sends a positioning signal, and the push rod cylinder 5 extends, driving the sealing ring push rod 3 to push the sealing ring 2 into the guide sleeve 13. After the push rod cylinder 5 completes feeding, it retracts to its initial position, and the material handling and pressing unit completes the material handling.

[0069] During pressing, the pressing mechanism that has completed the material removal moves above the designated sealing ring groove 181. The material removal and pressing cylinder 7 actuates, and through the action of the guide shaft 9 and the guide sleeve spring 12, presses the guide sleeve 13 onto the mounting surface of the sealing ring groove 181 on the valve body 18. At this time, the material removal and pressing cylinder 7 continues to actuate, pushing the pressure plate 17 to press down the sealing ring 2. As the pressure plate 17 presses down, the limiting sleeve 16 also presses down under the action of the limiting sleeve spring 15, and first contacts the sealing ring groove 181 on the valve body 18 with the pressure plate 17. At this time, the material removal and pressing cylinder 7 continues to press down, pushing the pressure plate 17 to press the sealing ring 2 into the sealing ring groove 181 of the valve body 18. The material removal and pressing action of the sealing ring 2 is completed. After the material removal and pressing is completed, this action is repeated to complete the material removal and pressing work of other sealing rings.

[0070] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0071] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. An axial seal ring press fitting device characterized by comprising: The device comprises: a control unit; a feeding unit (100) provided with a positioning sleeve (4), a pushing mechanism and a sealing ring sensor, the pushing mechanism having an initial position and a feeding position, the positioning sleeve (4) having a feeding position, an upstream process being capable of delivering a sealing ring (2) to the feeding position and the sealing ring sensor being capable of feeding the collected information of the feeding position to the control unit; a taking and pressing unit (200) provided with a pressing mechanism and a guide sleeve (13), the guide sleeve (13) being capable of moving to the surface of the feeding position and sequentially performing the following actions under the control of the control unit: action one: the pushing mechanism moves from the initial position to the feeding position and then returns to the initial position so that the sealing ring (2) is sent into the guide sleeve (13); action two: the guide sleeve (13) with the sealing ring (2) is driven to move to a target part and the sealing ring (2) in the guide sleeve (13) is assembled into a sealing ring groove (181) of the target part through the pressing mechanism; the taking and pressing unit (200) comprises a bottom plate (8) and a guide seat (10) arranged on the bottom plate (8), the pressing mechanism comprises a guide shaft (9) and a taking and pressing cylinder (7) arranged on the bottom plate (8), the taking and pressing cylinder (7) is capable of driving the guide shaft (9) to move in the axial direction so that the sealing ring (2) is assembled into the sealing ring groove (181), the guide shaft (9) passes through the guide seat (10) and is in sliding fit with the guide seat (10); the pressing mechanism further comprises an adjusting nut (11), a guide sleeve spring (12), a limiting sleeve spring (15), a limiting sleeve (16) and a pressing plate (17); the pressing plate (17) is arranged at the end of the guide shaft (9), the adjusting nut (11) is threadedly sleeved on the guide shaft (9), and from the adjusting nut (11) to the pressing plate (17), the guide shaft (9) is sequentially sleeved with the guide sleeve spring (12), the guide sleeve (13), the limiting sleeve spring (15) and the limiting sleeve (16); when the guide shaft (9) drives the guide sleeve (13) to move to the surface of the target part, the bottom end of the guide sleeve (13) is resisted by the surface of the target part, the guide sleeve spring (12) is compressed and deformed to be shortened, the guide shaft (9) drives the pressing plate (17) to push the sealing ring (2) to move towards the sealing ring groove (181), at this time, the limiting sleeve (16) also moves towards the sealing ring groove (181) under the driving of the limiting sleeve spring (15) and the end part enters the sealing ring groove (181) and guides the pressing plate (17) to push the sealing ring (2) to be assembled into the sealing ring groove (181).

2. The axial seal ring press fitting device according to claim 1, wherein the pushing mechanism comprises a push rod cylinder (5) and a fixed support (6), the positioning sleeve (4) and the push rod cylinder (5) are arranged on the fixed support (6), the push rod cylinder (5) is drivingly connected with a sealing ring push rod (3), and the end of the sealing ring push rod (3) extends into the inside of the positioning sleeve (4). When the sealing ring push rod (3) is in the initial position, the end of the sealing ring push rod (3) and the positioning sleeve (4) jointly form the feeding position.

3. The axial seal ring press fitting apparatus according to claim 2, wherein The feeding unit comprises a vibrating feeder and a feeding guide rail (1), and the vibrating feeder can transport the sealing ring (2) to the feeding position through the feeding guide rail (1) by vibration.

4. The axial seal ring press fitting device according to claim 1, wherein A position sensor (14) is arranged on the bottom plate (8) and used to collect the position of the guide shaft (9).

5. The axial seal ring press fitting device according to claim 1, wherein The limiting sleeve (16) and the guide sleeve (13) are assembled through spline fitting and have equal inner diameters.

6. The axial seal ring press fitting device according to claim 2, wherein The sealing ring push rod (3) and the positioning sleeve (4) are spline-fitted and can slide in the positioning sleeve (4). The top end of the sealing ring push rod (3) is provided with a taper for guiding the incoming sealing ring (2).

7. The axial seal ring press fitting apparatus according to claim 6, wherein The spline outer diameter size of the sealing ring push rod (3) is greater than the outer diameter size of the sealing ring (2), and a V-shaped chamfer structure supporting groove (31) is formed between the outer circle of the sealing ring push rod (3) and the push rod center guide taper of the sealing ring push rod (3) itself, and the bottom of the supporting groove (31) is a circular arc. A guide sleeve chamfer is arranged at the inlet of the guide sleeve (13) and matches the V-shaped chamfer structure, and the guide sleeve chamfer and the V-shaped chamfer structure interact to extrude and push the sealing ring (2) into the guide sleeve (13).

8. The axial seal ring press fitting apparatus according to claim 1, wherein The limiting sleeve spring (15) and the limiting sleeve (16) are assembled into the guide sleeve (13) and have outer diameters smaller than the outer diameter of the sealing ring groove (181).

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