An oil pipe and needle riveting mechanism and riveting machine

Abstract

This utility model relates to an oil pipe and needle riveting mechanism and a riveting machine. The oil pipe and needle riveting mechanism is used in conjunction with an oil pipe component, an oil needle component, and a reinforcing sleeve. It includes: a housing component, which includes a first housing and a second housing. The first housing has a first stepped portion in the middle that divides its inner cavity into a driving cavity and a riveting cavity. The second housing is fixed to the first housing by a number of bolts and closes the driving cavity. There are several push rods, which are axially movable and assembled in several driving holes opened on the first stepped portion. A driving component is disposed on the second housing to drive the several push rods to move synchronously into the riveting cavity. A riveting component is disposed in the riveting cavity and has at least one axially movable ring and one radial riveting component. The axially movable ring is axially movable and assembled in the riveting cavity, and its first end abuts against the first end of the push rod. Its inner cavity has an annular slope with an inner diameter that gradually decreases from the second end to the first end.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic braking system technology, specifically to an oil pipe and oil needle riveting mechanism and riveting machine. Background Technology

[0002] In hydraulic braking systems, the hydraulic hoses connect the brake lever and the brake pump at both ends. To prevent leakage of the hydraulic fluid inside the hoses and to allow for quick assembly, needle pins are typically installed at both ends. The traditional connection method involves inserting the needle pin's connector directly into the free end of the hose, relying on friction and tightening forces to maintain the connection. However, in practical applications, especially in high-frequency vibration scenarios such as bicycles, this simple insertion method cannot guarantee a stable connection over the long term.

[0003] With technological advancements, the industry has gradually adopted a solution of attaching a reinforcing sleeve to the end of the oil pipe. Applying riveting force to the reinforcing sleeve causes it to deform, thus creating a more stable bond between the needle valve and the free end of the oil pipe. This improvement effectively enhances connection stability. However, existing riveting equipment still has shortcomings in long-term performance, mainly manifested in the following ways: existing riveting mechanisms struggle to ensure uniform distribution of riveting force, leading to uneven deformation of the reinforcing sleeve, which may loosen under long-term vibration; and the riveting process can easily damage the oil pipe and needle valve. These technical deficiencies directly affect the reliability and service life of the hydraulic braking system.

[0004] Therefore, we propose an oil pipe and oil needle riveting mechanism and riveting machine. Utility Model Content

[0005] This application provides an oil pipe and needle riveting mechanism and riveting machine, which has the advantages of maintaining uniform riveting force, avoiding damage to the oil pipe and needle, and enhancing connection stability.

[0006] In a first aspect, this application provides an oil pipe and oil needle riveting mechanism, which is used in conjunction with an oil pipe fitting, an oil needle fitting, and a reinforcing sleeve. The reinforcing sleeve is axially sleeved on the free end of the oil pipe fitting, and the first end of the oil needle fitting is axially inserted into the free end of the oil pipe fitting, comprising:

[0007] The housing component includes a first housing and a second housing, wherein the first housing has a first stepped portion in the middle that divides its inner cavity into a driving cavity and a riveting cavity, and the second housing is fixed to the first housing by a plurality of bolts and closes the driving cavity;

[0008] The push rods are in number and are axially movable in several drive holes opened on the first stepped part;

[0009] A driving component, which is disposed on the second housing, drives a plurality of the push rods to move synchronously into the riveting cavity;

[0010] A riveting component, disposed within the riveting cavity, and having at least one axially movable ring and one radially riveting component, wherein...

[0011] The axially movable ring is axially movable and assembled in the riveting cavity, and its first end abuts against the first end of the push rod. An annular slope with an inner diameter that gradually decreases from the second end to the first end is formed in its inner cavity.

[0012] The radial riveting member is movably disposed in the inner cavity of the axial movable ring, and its outer wall surface abuts against the annular slope surface. The axial movable ring is driven by the push rod to move axially, driving the radial riveting member to move radially inward to compress the reinforcing sleeve riveting deformation and fix the oil pipe and oil needle.

[0013] Optionally, the radial riveting member includes:

[0014] The fixed housing is fixedly assembled in the riveting cavity by a number of bolts. The central part has an axial riveting station, and the annular outer wall has a number of riveting slots arranged in an annular array.

[0015] The riveting movable body is a plurality of such bodies and is movably assembled in the riveting movable groove. Its outer end abuts against the annular slope surface and its inner end has a prism part. The plurality of prism parts move inward radially in sync to perform riveting work on the reinforcing sleeve at the riveting station. One end of each riveting movable body is fixed with a limiting post.

[0016] The limiting grooves are arranged in a radial annular array along the annular outer wall of the fixed housing, and the limiting grooves are respectively connected to the riveting movable groove to accommodate the radial movement of the limiting post within the limiting groove.

[0017] The first elastic element, which is several in number and is respectively disposed in the limiting groove, has its two ends abutting against the bottom wall of the limiting groove and the side wall of the limiting post to provide the elastic restoring force of the riveted movable body.

[0018] Optionally, a third housing is fixed to one end of the first housing away from the second housing by a plurality of bolts. The third housing is annular, and a plurality of second elastic elements are provided between it and the axial movable ring to provide elastic restoring force for the axial movable ring.

[0019] The third housing and the axial movable ring each have a plurality of accommodating grooves on their opposing sidewalls to accommodate the second elastic element.

[0020] Optionally, the fixed housing includes:

[0021] The bottom shell component has its first end disposed in the assembly groove opened on the side of the first stepped portion located in the riveting cavity;

[0022] An outer casing component, which is disposed at the second end of the bottom casing component;

[0023] In this process, several bolts pass through bolt holes opened on the outer shell and the bottom shell in sequence and are threaded into threaded fixing holes opened on the bottom wall of the assembly groove, so as to fix the fixed shell into the riveting cavity.

[0024] Optionally, an oil syringe is fixed to the bottom shell at the position corresponding to the riveting station to accommodate the oil syringe and position the riveting position of the reinforcing sleeve during riveting.

[0025] Optionally, the two ends of the second housing are respectively formed with a sleeve segment and an extension segment. The sleeve segment is inserted into the drive cavity and closes the drive cavity, and an assembly step is coaxially formed inside the sleeve segment.

[0026] Optionally, the driving element includes:

[0027] A rotating sleeve is fitted onto the extension section, and a second step portion is formed in its inner cavity. Bearings are fitted on both sides of the second step portion to maintain the rotation of the rotating sleeve on the extension section.

[0028] A sealing ring, threadedly fitted to the free end of the extension section, is used to position the rotating sleeve axially.

[0029] A drive rod is movably fitted into a movable hole in the middle of the extension section, and its first end extends into the drive cavity and is fixedly fitted with a push disk. The push disk is axially movably fitted into the drive cavity, and the push disk abuts against the second ends of several push rods.

[0030] A strip-shaped groove is axially formed on the annular sidewall of a section of the drive rod located within the drive cavity;

[0031] A limiting bolt is fitted into a radially threaded hole on the mounting step, and its tail extends into the slot to limit the drive rod to move only axially.

[0032] The end cap is threadedly fitted onto the second end of the drive rod extending from the movable hole, and is fixedly assembled to the free end of the rotating sleeve by a number of bolts.

[0033] Optionally, the end cap has a hexagonal prism portion adapted to a wrench formed at the free end axial position away from the rotating sleeve.

[0034] Optionally, a tail bolt is provided on the free end of the hexagonal prism, the tail bolt passes through the hexagonal prism and is threadedly assembled with the second end of the drive rod to limit the axial movement stroke of the drive rod.

[0035] Secondly, this application provides a riveting machine, which includes the oil pipe and oil needle riveting mechanism described in the first aspect, and further includes:

[0036] The base component has one end fixed to the bottom wall of the housing component and the other end connected to the frame by bolts, the frame being set on the ground.

[0037] Compared with related technologies, the oil pipe and needle riveting mechanism and riveting machine provided in this application have at least the following technical advantages:

[0038] Through the coordinated operation of the driving component and the riveting component, the axial movement of the driving rod in the driving component drives the axial push of the propulsion disk, which evenly transmits the linear thrust to all the propulsion rods. Multiple propulsion rods evenly drive the axial movable ring to move axially, and drive the radial riveting component to move inward radially to compress the riveting deformation of the reinforcing sleeve. Thus, the axial movable ring and the radial riveting component are used to achieve uniform riveting by using their slope fit. This method has the advantages of good riveting force uniformity, no damage to oil pipes and needles, rapid positioning and processing, and enhanced connection stability.

[0039] Details of one or more embodiments of this application are set forth in the following drawings and description to make other features, objects and advantages of this application more readily apparent. Attached Figure Description

[0040] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0041] Figure 1 This is one of the perspective views of an oil pipe and needle riveting mechanism according to an exemplary embodiment.

[0042] Figure 2 This is a second perspective view of an oil pipe and needle riveting mechanism according to an exemplary embodiment.

[0043] Figure 3 This is an exploded view of an oil pipe needle riveting mechanism according to an exemplary embodiment.

[0044] Figure 4 This is a perspective cross-sectional view of an oil pipe and needle riveting mechanism according to an exemplary embodiment.

[0045] Figure 5 This is a schematic diagram of a combined structure of an oil pipe fitting, an oil needle fitting, and a reinforcing sleeve, according to an exemplary embodiment.

[0046] Reference numerals in the attached drawings: Housing component 10;

[0047] First housing 101; drive cavity 1011; riveting cavity 1012; first stepped portion 1013; threaded fixing hole 1015; assembly groove 1014;

[0048] Second housing 102; Sleeve section 1021; Extension section 1022; Assembly step 1023;

[0049] Third shell 103;

[0050] 20-pole propulsion column;

[0051] Drive component 30; bearing 300; rotating sleeve 301; second step portion 3011; sealing ring 302; drive rod 303; strip groove 3031; limit bolt 3032; propulsion disc 304; end cover 305; hexagonal column portion 306; tail bolt 307; bolt ring 308; fastening screw 309;

[0052] Axial movable ring 40; Annular slope surface 401; Receiving groove 402;

[0053] Radial riveting component 50; fixed housing 501; bottom housing component 5011; outer housing component 5012; riveting movable groove 502; riveting movable body 503; prism part 504; limiting post 505; limiting groove 506; first elastic component 507; riveting station 508; second elastic component 509; oil syringe 510. Detailed Implementation

[0054] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0055] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the mechanism 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 utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0056] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0057] In related technologies, with technological advancements, the industry has gradually adopted a solution of attaching a reinforcing sleeve to the end of the oil pipe. By applying riveting force to the reinforcing sleeve, it deforms, thus creating a more stable bond between the oil needle and the free end of the oil pipe. This improvement effectively enhances connection stability; however, existing riveting equipment still has shortcomings in long-term performance, mainly manifested in: the difficulty in ensuring uniform distribution of riveting force by existing riveting mechanisms, leading to uneven deformation of the reinforcing sleeve, which may loosen under long-term vibration; and the potential for damage to the oil pipe and oil needle during the riveting process. These technical deficiencies directly affect the reliability and service life of the hydraulic braking system.

[0058] Based on the above, the existing equipment generally suffers from the drawback of single-point force application leading to stress concentration, resulting in excessive local deformation of the reinforcing sleeve after riveting while other areas experience insufficient deformation. Technical analysis has revealed that uniform radial riveting force is crucial for ensuring the overall plastic deformation of the reinforcing sleeve. Therefore, this utility model provides an oil pipe and needle riveting mechanism and machine that converts axial driving force into multi-point, synchronous radial riveting force. It employs a split-shell structure to isolate the driving and riveting areas, and finally achieves uniform transmission of riveting force through mechanical linkage. The following detailed description, in conjunction with specific embodiments and accompanying drawings, further illustrates this.

[0059] Example 1

[0060] This utility model provides an oil pipe and oil needle riveting mechanism. Figure 1 This is one of the perspective views of an oil pipe and needle riveting mechanism according to an exemplary embodiment. Figure 2 This is a second perspective view of an oil pipe and needle riveting mechanism according to an exemplary embodiment. Figure 3 This is an exploded view of an oil pipe needle riveting mechanism according to an exemplary embodiment. Figure 4 This is a perspective cross-sectional view of an oil pipe and needle riveting mechanism according to an exemplary embodiment. Figure 1-4 As shown, the oil pipe and needle riveting mechanism is used in conjunction with an oil pipe fitting a, an oil needle fitting c, and a reinforcing sleeve b. The reinforcing sleeve b is axially sleeved on the free end of the oil pipe fitting a, and the first end of the oil needle fitting c is axially inserted into the free end of the oil pipe fitting a. The mechanism includes:

[0061] The housing component 10 includes a first housing 101 and a second housing 102. The first housing 101 has a first stepped portion 1013 in the middle, which divides its inner cavity into a driving cavity 1011 and a riveting cavity 1012. The second housing 102 is fixed to the first housing 101 by a number of bolts and closes the driving cavity 1011.

[0062] The pusher column 20, in which there are several, is axially movable and fitted into several drive holes 1014 opened on the first step portion 1013. In this embodiment, refer to the attached drawing. Figure 3 There are three propulsion columns 20 arranged in a ring array, and the drive hole 1014 is fitted with the propulsion column 20 with a clearance, which allows the propulsion column 20 to slide axially while restricting radial displacement.

[0063] A driving component 30 is disposed on the second housing 102 to drive a plurality of push columns 20 to move synchronously into the riveting cavity 1012;

[0064] A riveting component, disposed within a riveting cavity 1012, and having at least one axially movable ring 40 and one radial riveting component 50, wherein...

[0065] The axially movable ring 40 is axially movable and assembled in the riveting cavity 1012, and its first end abuts against the first end of the push column 20. An annular slope surface 401 with an inner diameter that gradually decreases from the second end to the first end is formed in its inner cavity.

[0066] The radial riveting member 50 is movably disposed in the inner cavity of the axial movable ring 40, and its outer wall surface abuts against the annular slope surface 401. The axial movable ring 40 is driven by the push column 20 to move axially, driving the radial riveting member 50 to move radially inward to compress the riveting deformation of the reinforcing sleeve b, and fix the oil pipe a and the oil needle c.

[0067] In the above embodiment, the housing 10 adopts a split structure, that is, the first housing 101 and the second housing 102 are connected by bolts, which facilitates the sealing and maintenance of the drive cavity 1011 and the assembly and adjustment of the riveting parts; in conjunction with the tapered design of the annular slope 401 in the riveting parts, the frictional resistance of the movement can be effectively reduced and the axial displacement can be linearly converted into radial displacement, thereby controlling the riveting deformation of the reinforcing sleeve b.

[0068] Specifically, Figure 5 This is a schematic diagram illustrating an assembly structure of an oil pipe fitting, an oil needle fitting, and a reinforcing sleeve according to an exemplary embodiment. (Refer to the attached diagram.) Figure 1-5In this embodiment, when the driving member 30 acts on multiple propulsion columns 20, the multiple propulsion columns 20 synchronously push the axial movable ring 40 to move towards the riveting cavity 1012. The axial force is uniformly transmitted to the axial movable ring 40. The annular slope portion 401 of the axial movable ring 40 contacts the outer wall of the radial riveting member 50. As the axial displacement increases, the inner diameter of the annular slope portion 401 decreases, forcing the radial riveting member 50 to move centripetally and squeeze the outer wall of the reinforcing sleeve b, forming a uniform annular riveting deformation zone. This achieves uniform plastic deformation of the reinforcing sleeve b, forming a stable riveting binding structure at the connection between the oil pipe and the oil needle. Furthermore, the mechanical driving method of axial drive and radial riveting effectively controls the riveting deformation to be consistent, improves the stability of the riveting process, and thus enhances the vibration resistance of the connection part, ensuring that the oil pipe and the oil needle maintain a reliable seal during long-term use.

[0069] In this embodiment, please continue to refer to the appendix. Figure 3-4 The radial riveting member 50 includes:

[0070] The fixed housing 501 is fixedly assembled in the riveting cavity 1012 by a number of bolts. The central part has an axial riveting station 508, and its annular outer wall has a number of riveting movable grooves 502 arranged in an annular array.

[0071] There are several riveting movable bodies 503, which are movably assembled in the riveting movable groove 502. The outer end of each body abuts against the annular slope surface 401, and the inner end of each body has a prism portion 504. Several prism portions 504 move radially inward simultaneously to perform riveting work on the reinforcing sleeve b at the riveting station 508. One end of each riveting movable body 503 is fixed with a limiting post 505. In this embodiment, there are 8 riveting movable bodies 503 arranged in a ring array.

[0072] The limiting grooves 506 are arranged in a radial annular array along the annular outer wall of the fixed housing 501. The limiting grooves 506 are respectively connected to the riveting movable grooves 502 to accommodate the radial movement of the limiting post 505 within the limiting groove 505. In this embodiment, the limiting groove 506 can specifically adopt an arc-shaped groove structure that matches the diameter of the limiting post 505.

[0073] The first elastic element 507 is a plurality of such elements and is respectively disposed in the limiting groove 505. Its two ends abut against the bottom wall of the limiting groove 505 and the side wall of the limiting post 505 to provide elastic restoring force for the riveted movable body 503. In this embodiment, the first elastic element 507 is a helical spring.

[0074] In the above embodiment, when the axially movable ring 40 is driven to move axially by the push column 20, the annular slope surface 401 presses against the outer end of the riveting movable body 503, forcing multiple riveting movable bodies 503 to slide synchronously inward radially along the riveting movable groove 502; while multiple prism portions 504 arranged in annular array apply uniform circumferential pressure to the riveting of the reinforcing sleeve b in the riveting station 508 during radial movement, forming a continuous annular linear riveting surface. After riveting is completed, the first elastic element 507 pushes the riveting movable body 503 to slide outward and reset along the riveting movable groove 502 by pressing against the side wall of the limiting column 505, so that the prism portion 504 is separated from the reinforcing sleeve b, completing the riveting. The solution of this embodiment, through the cooperation of the annularly arrayed riveting movable bodies and the limiting groove, ensures that each riveting point moves synchronously and the displacement is consistent, effectively solving the problem of inconsistent deformation of the reinforcing sleeve b caused by uneven distribution of riveting force, and the continuous annular extrusion of the prism portion causes the reinforcing sleeve b to produce uniform plastic deformation.

[0075] In this embodiment, we continue to refer to... Figure 4 The first housing 101 is fixed to the third housing 103 at one end away from the second housing 102 by a number of bolts. The third housing 103 is annular, and a number of second elastic elements 509 are provided between it and the axial movable ring 40 to provide elastic restoring force for the axial movable ring 40.

[0076] In this embodiment, the third housing 103 and the axial movable ring 40 are provided with a number of receiving grooves 402 on their opposite sidewalls to accommodate the second elastic element 509. In this embodiment, the second elastic element 509 is a helical spring, and there are 3 receiving grooves 402 arranged in a ring array.

[0077] In the above embodiment, after the riveting action is completed, the second elastic element 509 immediately unfolds elastically after the external force is released, pushing the axial movable ring 40 back to its initial position along the axial direction of the riveting cavity 1012. Simultaneously, the annular array arrangement of the receiving grooves ensures that multiple second elastic elements 509 are evenly distributed around the circumference of the axial movable ring 40, guaranteeing force balance during the reset process and ensuring that the reset trajectory of the axial movable ring 40 completely overlaps each time, effectively eliminating reset deviations caused by off-center loading. This embodiment ensures that the second elastic element 509 always remains in a vertically compressed state, and the positioning function of the receiving groove effectively prevents slippage of the spring end, ensuring that the elastic force is always transmitted along the axial direction, providing a stable elastic reset force for the axial movable ring 40. This allows the axial movable ring 40 to quickly and accurately return to its initial position after the riveting action is completed, guaranteeing the long-term stability of the riveting operation.

[0078] In this embodiment, we continue to refer to... Figures 3-4 The fixed housing 501 includes:

[0079] The bottom shell 5011 has its first end disposed in the assembly groove 1014 opened on one side of the riveting cavity 1012 in the first step portion 1013;

[0080] The outer casing 5012 is disposed at the second end of the bottom casing 5011;

[0081] Several bolts pass through bolt holes in the outer shell 5012 and the bottom shell 5011 and are threaded into threaded fixing holes 1015 on the bottom wall of the assembly groove 1014 to fix the housing 501 into the riveting cavity 1012.

[0082] In the above embodiment, the fixed housing 501 is achieved by combining a split bottom shell 5011 and an outer shell 5012, which facilitates the processing of the riveting groove 502 and the limiting groove 506. Specifically, the bottom shell 5011 is embedded in the assembly groove 1014 through its first end to form an axial positioning base, preventing radial displacement caused by force during riveting. The split structure of the bottom shell 5011 and the outer shell 5012 reduces the processing difficulty and improves the assembly accuracy.

[0083] In this embodiment, we continue to refer to... Figures 3-4 An oil syringe 510 is fixed at the position of the bottom shell 5011 corresponding to the riveting station 508 to accommodate the oil needle c and position the riveting position of the reinforcing sleeve b during riveting. During the riveting process, the oil needle c passes through the riveting station 508 and reaches the oil syringe 510 and abuts against the end of the inner cavity of the oil syringe 510. At this time, the deformation area of ​​the reinforcing sleeve b is precisely controlled at the riveting station 508, forming a rapid workpiece positioning.

[0084] In this embodiment, we continue to refer to... Figures 3-4 The second housing 102 has a sleeve section 1021 and an extension section 1022 formed at both ends respectively. The sleeve section 1021 is inserted into the drive cavity 1011 and closes the drive cavity 1011. An assembly step 1023 is coaxially formed inside the sleeve section 1021.

[0085] The drive unit 30 includes:

[0086] A rotating sleeve 301 is fitted onto the extension section 1022, and a second step portion 3011 is formed in its inner cavity. Bearings 300 are mounted on both sides of the second step portion 3011 to maintain the rotation of the rotating sleeve 301 on the extension section 1022. In this embodiment, the bearing 300 is a planar ball bearing.

[0087] A sealing ring 302 is threadedly fitted to the free end of the extension 1022 to position the axial position of the rotating sleeve 301.

[0088] The drive rod 303 is movably mounted in the movable hole opened in the middle of the extension section 1022, and its first end extends into the drive cavity 1011 and is fixedly mounted with a push plate 304 by fastening screw 309. The push plate 304 is axially movably mounted in the drive cavity 1011 and abuts against the second end of several push columns 20.

[0089] The strip groove 3031 is axially formed on the annular sidewall of a section of the drive rod 303 located in the inner cavity of the drive cavity 1011;

[0090] The limiting bolt 3032 is fitted into a radially threaded hole on the mounting step 1023, and its tail extends into the slot 3031 to limit the axial movement of the drive rod 303. Furthermore, a through hole is provided on the side wall of the drive cavity 1011 at the position corresponding to the limiting bolt 3032. This through hole is used to remove the limiting bolt 3032 for replacement or repair without disassembling the housing 10.

[0091] The end cap 305 is threadedly fitted onto the second end of the drive rod 303 extending from the movable hole, and is fixedly assembled with the free end of the rotating sleeve 301 by a number of bolts.

[0092] In the above embodiment, the sleeve section 1021 is inserted into the opening of the drive cavity 1011 and makes tight contact with the inner wall of the drive cavity 1011 to seal the drive cavity and prevent oil or impurities from seeping in; the rotating sleeve 301 achieves low-resistance rotation on the extension section 1022 through the bearing 300, and the tight sealing ring 302 fixes the axial position of the rotating sleeve 301 through the thread preload to prevent axial movement during the movement; when the external driving force is applied to the rotating sleeve 301, the strip groove 3031 on the drive rod 303 and the limit bolt 3032 cooperate axially to limit the movement of the drive rod 303, thereby driving the pusher disc 304 to push axially in the inner cavity of the drive cavity 1011, and uniformly transmitting the linear thrust to all the pusher columns 20. The multiple pusher columns 20 uniformly drive the axial movable ring 40 to move axially, thereby driving the radial riveting part 50 to move radially inward to compress the deformation of the reinforcing sleeve b and fix the oil pipe part a and the oil needle part c.

[0093] Through the above technical solution, the double bearing support structure of the rotating sleeve 301 in this application reduces the wear rate of rotating parts and extends the service life of the equipment. The limiting bolt 3032 and the slot 3031 ensure the absolute linearity of the movement of the drive rod 303, and keep the thrust of the push plate 304 on the multiple push columns 20 evenly distributed. This effectively solves the problem of insufficient stability of the drive mechanism during riveting and ensures the long-term stability of the oil pipe and oil needle connection structure.

[0094] In this embodiment, we continue to refer to... Figure 4The end cap 305 is formed with a hexagonal prism 306 adapted to a wrench at the free end axial position away from the rotating sleeve 301; a tail bolt 307 is provided on the free end of the hexagonal prism 306, the tail bolt 307 passes through the hexagonal prism 306 and is threadedly assembled with the second end of the drive rod 303 to limit the axial movement stroke of the drive rod 303.

[0095] In the above embodiment, when the operator uses a hex wrench to engage the hexagonal column portion 306, the rotational action drives the axial movement of the drive rod 303 through the rotation of the end cap 305, avoiding rotational slippage and ensuring that the driving force is completely converted into the linear displacement of the drive rod 303. At the same time, when the drive rod 303 is axially displaced by the drive member 30, the thread engagement depth between the tail bolt 307 and the end of the drive rod 303 determines the maximum advance distance of the drive rod 303. The operator can change its screw-in depth by rotating the tail bolt 307, so that the end face of the tail bolt 307 contacts the end face of the hexagonal column portion 306 to form a mechanical stop. At the same time, the self-locking characteristic of the threaded pair can further prevent the limit failure caused by vibration during the riveting process.

[0096] Furthermore, a bolt ring 308 can be fitted onto the tail bolt 307 to avoid direct rigid contact between the bolt head end face of the tail bolt 307 and the end face of the hexagonal prism 306, thereby improving service life.

[0097] In summary, the oil pipe and needle riveting mechanism provided in this embodiment of the present invention, through the coordinated cooperation of the driving component and the riveting component, the axial movement of the driving rod 303 in the driving component drives the axial push of the propulsion disk 304, and the linear thrust is evenly transmitted to all the propulsion columns 20. The multiple propulsion columns 20 evenly drive the axial movable ring 40 to move axially, and drive the radial riveting component 50 to move radially inward to compress the riveting deformation of the reinforcing sleeve b. Thus, the axial movable ring 40 and the radial riveting component 50 are used to achieve uniform riveting, which has the advantages of good riveting force uniformity, no damage to the oil pipe and needle, rapid positioning and processing, and enhanced connection stability.

[0098] Example 2

[0099] Embodiment 2 of this utility model provides a riveting machine, which includes the oil pipe and oil needle riveting mechanism of the first aspect described above, and further includes:

[0100] The base component has one end fixed to the bottom wall of the housing component 10, and the other end is bolted to the frame, which is set on the ground.

[0101] In the above embodiment, a closed force transmission path is formed by the composite support structure of the base and the frame, providing support force for the riveting mechanism. Furthermore, the bottom of the frame can be fixed to the ground by expansion bolts to ensure the smooth progress of the riveting work.

[0102] Other undescribed structures are described in Example 1.

[0103] In summary, the oil pipe and needle riveting mechanism and riveting machine provided in this embodiment of the present invention, through the coordinated cooperation of the driving component and the riveting component, the axial movement of the driving rod 303 in the driving component drives the axial push of the propulsion disk 304, and the linear thrust is evenly transmitted to all the propulsion columns 20. The multiple propulsion columns 20 evenly drive the axial movable ring 40 to move axially, and drive the radial riveting component 50 to move radially inward to compress the riveting deformation of the reinforcing sleeve b. Thus, the axial movable ring 40 and the radial riveting component 50 are used to achieve uniform riveting, which has the advantages of good riveting force uniformity, no damage to the oil pipe and needle, rapid positioning and processing, and enhanced connection stability.

[0104] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0105] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An oil pipe and needle riveting mechanism, used in conjunction with an oil pipe fitting, an oil needle fitting, and a reinforcing sleeve, wherein the reinforcing sleeve is fitted onto the free end of the oil pipe fitting, and the first end of the oil needle fitting is inserted into the free end of the oil pipe fitting, characterized in that, include: The housing component includes a first housing and a second housing, wherein the first housing has a first stepped portion in the middle that divides its inner cavity into a driving cavity and a riveting cavity, and the second housing is fixed to the first housing by a plurality of bolts and closes the driving cavity; The push rods are in number and are axially movable in several drive holes opened on the first stepped part; A driving component, which is disposed on the second housing, drives a plurality of the push rods to move synchronously into the riveting cavity; A riveting component, disposed within the riveting cavity, and having at least one axially movable ring and one radially riveting component, wherein... The axially movable ring is axially movable and assembled in the riveting cavity, and its first end abuts against the first end of the push rod. An annular slope with an inner diameter that gradually decreases from the second end to the first end is formed in its inner cavity. The radial riveting member is movably disposed in the inner cavity of the axial movable ring, and its outer wall surface abuts against the annular slope surface. The axial movable ring is driven by the push rod to move axially, driving the radial riveting member to move radially inward to compress the reinforcing sleeve riveting deformation and fix the oil pipe and oil needle.

2. The oil pipe and needle riveting mechanism as described in claim 1, characterized in that, The radial riveting component includes: The fixed housing is fixedly assembled in the riveting cavity by a number of bolts. The central part has an axial riveting station, and the annular outer wall has a number of riveting slots arranged in an annular array. The riveting movable body is a plurality of such bodies and is movably assembled in the riveting movable groove. Its outer end abuts against the annular slope surface and its inner end has a prism part. The plurality of prism parts move inward radially in sync to perform riveting work on the reinforcing sleeve at the riveting station. One end of each riveting movable body is fixed with a limiting post. The limiting grooves are arranged in a radial annular array along the annular outer wall of the fixed housing, and the limiting grooves are respectively connected to the riveting movable groove to accommodate the radial movement of the limiting post within the limiting groove. The first elastic element, which is several in number and is respectively disposed in the limiting groove, has its two ends abutting against the bottom wall of the limiting groove and the side wall of the limiting post to provide the elastic restoring force of the riveted movable body.

3. The oil pipe and needle riveting mechanism as described in claim 1, characterized in that, The first housing is fixed to a third housing by a number of bolts at one end away from the second housing. The third housing is annular, and a number of second elastic elements are provided between it and the axial movable ring to provide elastic restoring force for the axial movable ring. The third housing and the axial movable ring each have a plurality of accommodating grooves on their opposing sidewalls to accommodate the second elastic element.

4. The oil pipe and needle riveting mechanism as described in claim 2, characterized in that, The fixed housing includes: The bottom shell component has its first end disposed in the assembly groove opened on the side of the first stepped portion located in the riveting cavity; An outer casing component, which is disposed at the second end of the bottom casing component; In this process, several bolts pass through bolt holes opened on the outer shell and the bottom shell in sequence and are threaded into threaded fixing holes opened on the bottom wall of the assembly groove, so as to fix the fixed shell into the riveting cavity.

5. The oil pipe and needle riveting mechanism as described in claim 4, characterized in that, An oil syringe is fixed to the bottom shell component at the position corresponding to the riveting station, so as to accommodate the oil syringe component and position the riveting position of the reinforcing sleeve during riveting.

6. The oil pipe and needle riveting mechanism as described in claim 1, characterized in that, The second housing has a sleeve section and an extension section formed at both ends, the sleeve section is inserted into the drive cavity and closes the drive cavity, and an assembly step is coaxially formed inside the sleeve section.

7. The oil pipe and needle riveting mechanism as described in claim 6, characterized in that, The driving component includes: A rotating sleeve is fitted onto the extension section, and a second step portion is formed in its inner cavity. Bearings are fitted on both sides of the second step portion to maintain the rotation of the rotating sleeve on the extension section. A sealing ring, threadedly fitted to the free end of the extension section, is used to position the rotating sleeve axially. A drive rod is movably fitted into a movable hole in the middle of the extension section, and its first end extends into the drive cavity and is fixedly fitted with a push disk. The push disk is axially movably fitted into the drive cavity, and the push disk abuts against the second ends of several push rods. A strip-shaped groove is axially formed on the annular sidewall of a section of the drive rod located within the drive cavity; A limiting bolt is fitted into a radially threaded hole on the mounting step, and its tail extends into the slot to limit the drive rod to move only axially. The end cap is threadedly fitted onto the second end of the drive rod extending from the movable hole, and is fixedly assembled to the free end of the rotating sleeve by a number of bolts.

8. The oil pipe and needle riveting mechanism as described in claim 7, characterized in that, The end cap has a hexagonal prism portion adapted to fit a wrench, formed at the free end axis position away from the rotating sleeve.

9. The oil pipe and needle riveting mechanism as described in claim 8, characterized in that, A tail bolt is provided on the free end of the hexagonal prism. The tail bolt passes through the hexagonal prism and is threadedly assembled with the second end of the drive rod to limit the axial movement stroke of the drive rod.

10. A riveting machine, characterized in that, It includes the oil pipe and oil needle riveting mechanism as described in any one of claims 1-9, and further includes: The base component has one end fixed to the bottom wall of the housing component and the other end connected to the frame by bolts, the frame being set on the ground.

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