An oiling mechanism for micro-sized O-rings

Abstract

The present invention provides an oiling mechanism for a micro-sized O-ring, which makes the oiling of the O-ring quick and efficient, and the surface oiling amount is uniform and reliable, and the sealing ring is convenient and quick to take and put. It includes: a mounting frame, which includes an upper support plate; a grease container, which includes an oil chamber and a positive pressure air path; a floating assembly, which includes a pressure plate and an elastic guide module; an oiling plate assembly, which includes a first oiling plate and a second oiling plate; an oil hole ejector assembly, which includes an ejector mounting plate, a movable ejector, and a linear drive module; an oiling plate assembly is arranged in the central area of ​​the upper support plate, the first oiling plate is a guide oiling plate, the second oiling plate is an oiling operation plate, and the upper surface of the second oiling plate is arranged with a plurality of concave oiling grooves, and a connecting hole is arranged directly below the oiling groove; the elastic guide module is arranged vertically to drive the pressure plate to fit the upper surface of the oiling plate assembly, the elastic guide module is externally connected to the horizontal drive module, and the output end of the elastic guide module is pressed against the pressure plate.

Description

Technical Field

[0001] The present invention relates to the technical field of sealing ring oiling, and in particular to an oiling mechanism for miniature O-type sealing rings. Background Art

[0002] O-rings are commonly used as sealing parts. They are easy to install, low in cost and have excellent sealing effects. Therefore, they are widely used. Some miniature O-rings need to be oiled before assembly to extend their service life. In the prior art, they are mostly oiled manually. The manual oiling method makes it inconvenient to take and put the O-rings after oiling, and the amount of oil on the surface is inconsistent. Summary of the invention

[0003] In view of the above problems, the present invention provides an oiling mechanism for a miniature O-ring, which makes the oiling of the O-ring quick and efficient, the surface oiling amount is uniform and reliable, and the sealing ring is convenient and quick to take and put.

[0004] An oiling mechanism for a miniature O-ring seal, characterized in that it comprises:

[0005] A mounting frame including an upper support plate;

[0006] A grease container, comprising an oil chamber and a positive pressure air circuit;

[0007] A floating assembly, which includes a pressure plate and an elastic guide module;

[0008] An oiling plate assembly, comprising a first oiling plate and a second oiling plate;

[0009] An oil hole ejector assembly, comprising an ejector mounting plate, a movable ejector, and a linear drive module;

[0010] The oiling plate assembly is arranged in the central area of ​​the upper support plate, the first oiling plate is a guide oiling plate, the second oiling plate is an oiling operation plate, a plurality of concave oiling grooves are arranged on the upper surface of the second oiling plate, and a connecting hole is arranged directly below the oiling groove;

[0011] The elastic guide module is arranged vertically to drive the pressure plate to fit the upper surface of the oiling plate assembly, the elastic guide module is externally connected to the horizontal drive module, the output end of the elastic guide module is pressed against the pressure plate, the central area of ​​the pressure plate is built with an oil cavity, the lower surface of the oil cavity is arranged closely against the first oiling plate and the second oiling plate, and the positive pressure air circuit is used to press the grease outlet at the bottom of the oil cylinder to discharge the grease;

[0012] The second oiling plate is supported on the ejector mounting plate, and a plurality of the movable ejectors are embedded in the movable ejector plate. The number of the movable ejectors corresponds to the number of the oiling grooves, and the needle portion of the movable ejector is arranged toward the connecting hole and the oiling groove. A linear drive module is connected to the bottom of the movable ejector, and the linear drive module drives the movable ejector to operate in a vertical direction.

[0013] It is further characterized by:

[0014] The upper surfaces of the first oiling plate and the second oiling plate are flush, and convex guide strips are arranged on both sides of the upper surfaces of the first oiling plate and the second oiling plate corresponding to the area formed by the oiling groove, and the two sides of the bottom shape of the oil cavity are placed in the two convex guide strips to ensure that the oil cavity does not deviate from the operation;

[0015] Guide rails are respectively arranged on both sides of the upper support plate corresponding to the central area, and the guide rails cover the length areas corresponding to the first oiling plate and the second oiling plate. The elastic guide module vertically includes support seats on both sides, and the bottom of the support seat on each side is supported on the guide rail on the corresponding side. An elastic guide pressure rod is arranged on the inner side of the support seat facing the pressure plate, and the lower part of the elastic guide pressure rod is connected to the corresponding position of the pressure plate. An oil cavity is fixedly arranged at the central position of the pressure plate, and the grease outlet at the bottom of the oil cavity is arranged downward;

[0016] The output end of the horizontal driving module is fixedly connected to one of the supporting seats, and the horizontal driving module drives the pressing plate to drive the grease container to move along the guide rail;

[0017] The movable ejector pin is embedded in the guide through hole preset in the ejector mounting plate, and the movable ejector pin comprises a top, a large-diameter guide end, and a small-diameter driving end. The upper surface of the large-diameter guide section is used to combine with the lower surface of the second oiling plate to form a stop limit structure. A linear bearing is sleeved on the bottom of the guide through hole, and a compression spring is arranged on the upper surface of the linear bearing and the lower surface of the large-diameter guide section. The small-diameter driving end protrudes downward after passing through the center hole of the linear bearing and is fixedly sleeved with a retaining spring after passing through the mounting hole of the pull plate. The pull plate is externally connected to a linear drive module.

[0018] After adopting the above technical solution, the grease is similar to a solid structure, and it will not flow or change state when it is not under pressure. The bottom surface of the oil cavity is pressed on the upper surface of the oiling plate assembly through the pressure plate. The pressure plate provides Z-direction force to ensure that the grease will not be pressed out of the gap by positive pressure. The initial state of the oiling mechanism is as follows: Figure 3As shown, the linear drive module moves, driving the grease container to reciprocate a stroke in the oiling plate assembly. The grease is pressed into the oiling groove under the action of positive pressure. At this time, the top of the movable ejector pin is placed in the center of the oiling groove. Then the linear drive module of the movable ejector pin assembly moves to pull the movable ejector pin back, and the external unloaded material pickup needle moves to the cylindrical hole section of the oiling groove to oil the outer wall of the material pickup needle. Then the material pickup needle picks up the O-ring, and the grease on the outer wall of the material pickup needle is applied to the inner ring wall of the O-ring. The material pickup needle moves to the oiling groove again, and the O-ring is pressed into the contoured groove of the oiling groove to complete the oiling process of the O-ring. In terms of structure, several groups of oiling grooves and corresponding movable ejectors can be arranged at a time, so that a single oiling can complete the oiling of multiple O-rings (see Figure 4 ), which makes the O-ring oiling quick and efficient, and the surface oiling amount is uniform and reliable, and the sealing ring is easy and quick to take and put. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the front view of the present invention;

[0021] Figure 3 for Figure 2 A partial enlarged view of

[0022] Figure 4 This is a schematic diagram of part of the working process of the present invention in combination with the material extraction needle;

[0023] The names corresponding to the serial numbers in the figure are as follows:

[0024] Mounting frame 10, upper supporting plate 11, guide rail 12, grease container 20, oil chamber 21, positive pressure air path 22, floating assembly 30, pressure plate 31, elastic guide module 32, supporting seat 321, elastic guide pressure rod 322, oiling plate assembly 40, first oiling plate 41, second oiling plate 42, oiling groove 421, connecting hole 422, upper convex guide strip 43, oil hole ejector assembly 50, ejector mounting plate 51, guide through hole 511, movable ejector 52, top 521, large diameter guide end 522, small diameter driving end 523, linear driving module 53, linear bearing 54, compression spring 55, pull plate 56, retaining ring 57, sealing ring 58, horizontal driving module 60, O-ring 70, and material taking needle 80. DETAILED DESCRIPTION

[0025] An oiling mechanism for miniature O-rings, see Figure 1-Figure 4, which includes: a mounting frame 10, a grease container 20, a floating assembly 30, an oiling plate assembly 40, and an oil hole ejector assembly 50; the mounting frame 10 includes an upper support plate 11; the grease container 20 includes an oil chamber 21 and a positive pressure air path 22; the floating assembly 30 includes a pressing plate 31 and an elastic guide module 32; the oiling plate assembly 40 includes a first oiling plate 41 and a second oiling plate 42; the oil hole ejector assembly 50 includes an ejector mounting plate 51, a movable ejector 52, and a linear drive module 53;

[0026] An oiling plate assembly 40 is provided in the central area of ​​the upper support plate 11. The first oiling plate 41 is a guide oiling plate, and the second oiling plate 42 is an oiling operation plate. A plurality of concave oiling grooves 421 are arranged on the upper surface of the second oiling plate 42, and a connecting hole 422 is provided directly below the oiling groove 421.

[0027] The elastic guide module 32 is arranged to vertically drive the pressing plate 31 to fit the upper surface of the oiling plate assembly 40. The elastic guide module 32 is externally connected to the horizontal drive module 60. The output end of the elastic guide module 32 is pressed against the pressing plate 31. The central area of ​​the pressing plate 31 is provided with an oil chamber 21. The lower surface of the oil chamber 21 is arranged closely against the first oiling plate 41 and the second oiling plate 42. The positive pressure air path 22 is used to press against the grease outlet at the bottom of the oil cylinder to discharge the grease.

[0028] The second oiling plate 42 is supported on the ejector mounting plate 51. A plurality of movable ejectors 52 are embedded in the movable ejector plate 51. The number of movable ejectors 52 corresponds to the number of oiling grooves 421. The needle portion of the movable ejector 52 is arranged toward the connecting hole 422 and the oiling groove 421. The bottom of the movable ejector 52 is connected to a linear drive module 53. The linear drive module 53 drives the movable ejector 52 to operate in a vertical direction.

[0029] In specific implementation, four oiling grooves 421 are arranged on the upper surface of the second oiling plate 42 .

[0030] The upper surfaces of the first oiling plate 41 and the second oiling plate 42 are flush, and convex guide strips 43 are provided on both sides of the upper surfaces of the first oiling plate 41 and the second oiling plate 42 corresponding to the area formed by the oiling groove, and the two sides of the bottom shape of the oil cavity 21 are placed in the two convex guide strips 43 to ensure that the oil cavity 21 does not deviate from the operation;

[0031] Guide rails 12 are respectively arranged on both sides corresponding to the central area of ​​the upper support plate 11, and the guide rails 12 cover the length areas corresponding to the first oiling plate 41 and the second oiling plate 42. The elastic guide module 32 vertically includes support seats 321 on both sides, and the bottom of the support seat 321 on each side is supported on the guide rail 12 on the corresponding side. An elastic guide pressure rod 322 is arranged on the inner side of the support seat 321 facing the pressure plate, and the lower part of the elastic guide pressure rod 322 is connected to the corresponding position of the pressure plate 31. An oil chamber 21 is fixedly arranged at the central position of the pressure plate 31, and the grease outlet at the bottom of the oil chamber 21 is arranged downward;

[0032] The horizontal driving module 60 is specifically a horizontal cylinder, the output end of which is fixedly connected to one of the support seats 321 . The horizontal driving module 60 drives the pressing plate 31 to drive the grease container 20 to move along the guide rail 12 .

[0033] During specific implementation, the movable ejector 52 is embedded in the guide through hole 511 preset in the ejector mounting plate 51, and the movable ejector 52 includes a top 521, a large diameter guide end 522, and a small diameter driving end 523. The upper surface of the large diameter guide section 522 is used to combine with the lower surface of the second oiling plate 42 to form a stop limit structure. A linear bearing 54 is sleeved on the bottom of the guide through hole 511, and a compression spring 55 is arranged between the upper surface of the linear bearing 54 and the lower surface of the large diameter guide section 522. The small diameter driving end 523 passes through the center hole of the linear bearing 54 and then convexes downward, and passes through the mounting hole of the pull plate 56 and is fixed with a retaining spring 57. The pull plate 56 is externally connected to a linear drive module 53, and the linear drive module 53 is specifically a linear cylinder or a linear electric cylinder.

[0034] In specific implementation, a sealing ring 58 is provided on the outer circumference of the large-diameter guide end 522 to ensure that grease does not leak.

[0035] Its working principle is as follows: Grease is a solid-like structure, and it will not flow or change state when not under pressure. The bottom surface of the oil chamber 21 is pressed on the upper surface of the oiling plate assembly 40 through the pressure plate. The pressure plate 31 provides Z-direction force to ensure that the grease will not be pressed out of the gap by positive pressure. The initial state of the oiling mechanism is as follows: Figure 3As shown, the linear drive module 53 is actuated to drive the grease container 20 to reciprocate one stroke in the oiling plate assembly 40, and the grease is pressed into the oiling groove 421 under the action of positive pressure. At this time, the top 521 of the movable ejector 52 is placed at the center of the oiling groove 421, and then the linear drive module 53 of the movable ejector assembly 50 is actuated to pull the movable ejector 52 back, and the externally unloaded material collection needle 80 moves to the cylindrical hole section of the oiling groove 421 to oil the outer wall of the material collection needle 80, and then the material collection needle takes the O-type sealing ring 70, and the grease on the outer wall of the material collection needle 80 is applied to the inner ring wall of the O-type sealing ring 70, and the material collection needle moves to the oiling groove 421 again, and the O-type sealing ring 70 is pressed into the contoured groove of the oiling groove 421, completing the oiling process of the O-type sealing ring 70. Its structure can be arranged with several groups of oiling grooves and corresponding movable ejectors, so that a single oiling can complete the oiling of multiple O-type sealing rings (see Figure 4 ), which makes the O-ring oiling quick and efficient, and the surface oiling amount is uniform and reliable, and the sealing ring is easy and quick to take and put.

[0036] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An oiling mechanism for a miniature O-ring, characterized in that: It includes: A mounting frame including an upper support plate; A grease container, comprising an oil chamber and a positive pressure air circuit; A floating assembly, which includes a pressure plate and an elastic guide module; An oiling plate assembly, comprising a first oiling plate and a second oiling plate; An oil hole ejector assembly, comprising an ejector mounting plate, a movable ejector, and a linear drive module; The oiling plate assembly is arranged in the central area of ​​the upper support plate, the first oiling plate is a guide oiling plate, the second oiling plate is an oiling operation plate, a plurality of concave oiling grooves are arranged on the upper surface of the second oiling plate, and a connecting hole is arranged directly below the oiling groove; The elastic guide module is arranged vertically to drive the pressure plate to fit the upper surface of the oiling plate assembly, the elastic guide module is externally connected to the horizontal drive module, the output end of the elastic guide module is pressed against the pressure plate, the central area of ​​the pressure plate is built with an oil cavity, the lower surface of the oil cavity is arranged closely against the first oiling plate and the second oiling plate, and the positive pressure air circuit is used to press the grease outlet at the bottom of the oil cylinder to discharge the grease; The second oiling plate is supported by the ejector mounting plate, and a plurality of the movable ejectors are embedded in the movable ejector plate, the number of the movable ejectors corresponds to the number of the oiling grooves, the needles of the movable ejectors are arranged toward the connecting holes and the oiling grooves, and the bottom of the movable ejectors is connected to a linear drive module, and the linear drive module drives the movable ejectors to operate in a vertical direction; The movable ejector includes a top, a large-diameter guide end, and a small-diameter driving end. The upper surface of the large-diameter guide section is used to combine with the lower surface of the second oiling plate to form a stop limit structure.

2. The oiling mechanism for a miniature O-ring as claimed in claim 1, characterized in that: The upper surfaces of the first oiling plate and the second oiling plate are flush, and convex guide strips are provided on both sides of the upper surfaces of the first oiling plate and the second oiling plate corresponding to the area formed by the oiling groove, and both sides of the bottom shape of the oil cavity are placed in the two convex guide strips.

3. The oiling mechanism for a miniature O-ring as claimed in claim 1, characterized in that: Guide rails are respectively arranged on both sides of the upper support plate corresponding to the central area, and the guide rails cover the length areas corresponding to the first oiling plate and the second oiling plate. The elastic guide module vertically includes support seats on both sides, and the bottom of the support seat on each side is supported on the guide rail on the corresponding side. An elastic guide pressure rod is arranged on the inner side of the support seat facing the pressure plate, and the lower part of the elastic guide pressure rod is connected to the corresponding position of the pressure plate. An oil chamber is fixedly provided at the center position of the pressure plate, and the bottom grease outlet of the oil chamber is arranged downward.

4. The oiling mechanism for a miniature O-ring as claimed in claim 3, characterized in that: The output end of the horizontal driving module is fixedly connected to one of the supporting seats, and the horizontal driving module drives the pressure plate to drive the grease container to move along the guide rail.

5. The oiling mechanism for a miniature O-ring as claimed in claim 1, characterized in that: The movable ejector is embedded in the guide through hole preset in the ejector mounting plate, a linear bearing is sleeved on the bottom of the guide through hole, compression springs are arranged on the upper surface of the linear bearing and the lower surface of the large diameter guide section, the small diameter driving end penetrates through the center hole of the linear bearing and then protrudes downward, penetrates through the mounting hole of the pull plate and is fixedly sleeved with a retaining spring, and the pull plate is externally connected to a linear driving module.

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