Salient point beating mechanism and method for machining salient points of pipe structure

Abstract

The invention provides a salient point beating mechanism and a method for machining salient points of a pipe structure. Deformation of the pipe structure during salient point machining can be improved. The salient point beating mechanism comprises an ejector rod component and a driving component, and the driving component is used for driving the ejector rod component to move in the axial direction; the bump forming mechanism further comprises an extrusion part and a limiting structure for limiting the axial movement of the extrusion part; when the extrusion part is at the first position, a first radial distance is formed between the extrusion part and the axis of the ejector rod component; one of the extrusion part and the ejector rod component is provided with a conical surface, when the extrusion part is at the second position, the conical surface abuts against the other one of the extrusion part and the ejector rod component, a second radial distance is formed between the axis of the extrusion part and the axis of the ejector rod component, and the first radial distance is smaller than the second radial distance; the extrusion part can abut against the inner surface of the pipe wall of the pipe structure to form protruding points.

Description

Technical Field

[0001] This application relates to the field of workpiece processing technology, specifically to a bump-forming mechanism and a method for processing bumps on a tube structure. Background Technology

[0002] Some types of tubular structures have raised dots on their outer surface. To create these raised dots on the tubing, a punch press is used in related technologies. The punch press includes a punch and a die. During processing, the tubing is inserted into the punch, then the switch is activated, causing the die to descend and engage with the punch to punch the raised dots onto the outer surface of the tubing. The tubing is then removed. However, this punching process can easily lead to tubing deformation. Summary of the Invention

[0003] The purpose of this application is to provide a bump-making mechanism and a method for processing bumps on a tube structure, which can improve the deformation of the tube structure during bump processing.

[0004] To solve the above-mentioned technical problems, this application provides a bumping mechanism for processing bumps on the wall of a pipe structure. The bumping mechanism includes a push rod component and a driving component, wherein the driving component is used to drive the push rod component to move axially; the bumping mechanism also includes an extrusion part and a limiting structure for restricting the axial movement of the extrusion part.

[0005] The extrusion part is in a first position, and the axes of the extrusion part and the push rod component have a first radial distance; one of the extrusion part and the push rod component has a conical surface, the extrusion part is in a second position, the conical surface abuts against the other, and the axes of the extrusion part and the push rod component have a second radial distance, the first radial distance is less than the second radial distance, and the extrusion part can abut against the inner surface of the tube wall of the tube structure to form the protrusion.

[0006] In this application, the embossing mechanism uses an extrusion section located inside the tube structure during embossing operations. The axial movement is converted into radial movement of the extrusion section through a conical fit between the push rod and the extrusion section, thus extruding the emboss along the tube structure. Compared to the punching method mentioned in the prior art, which directly stamps embossing from the outside of the tube structure, the method in this application, where the extrusion section gradually presses the tube wall from the inside out to form embossing, is less likely to cause impact deformation to the tube structure.

[0007] Furthermore, the embossing mechanism in this application can be equipped with multiple extrusion sections, thereby enabling the processing of multiple embossing sections at once. Compared to the prior art method of stamping one embossing section at a time, this improves processing efficiency. Moreover, when multiple extrusion sections are set, once the circumferential distribution of the multiple extrusion sections is determined, the position of the embossing section formed by extrusion on the tube structure is also relatively determined. Compared to the prior art method of forming multiple embossing sections by multiple stampings, this improves the accuracy of embossing processing.

[0008] This application also provides a method for processing protrusions in a pipe structure, based on the protrusion-making mechanism described above, the method comprising:

[0009] The tubular structure is fitted over the outside of the extrusion section and the push rod component;

[0010] The push rod component is driven to move axially, so that the conical surface contacts the other one, and the extrusion part is pushed to move radially away from the axis of the push rod component, moving to the second position, where the extrusion part extrudes the inner surface of the tube wall of the tube structure to form the protrusion.

[0011] This method reduces the impact deformation of the tube structure by forming protrusions by pressing the inner surface of the tube structure from the inside, compared to the prior art method of pressing from the outside. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the bump-forming mechanism in one embodiment of this application;

[0013] Figure 2 for Figure 1 Top view of the convex dot mechanism;

[0014] Figure 3 for Figure 2 Schematic sectional view along the middle AA direction;

[0015] Figure 4 for Figure 3 A magnified view of part B in the middle;

[0016] Figure 5 for Figure 3 A three-dimensional structural diagram of the center push rod component;

[0017] Figure 6 for Figure 5 Axial sectional view of the center push rod assembly;

[0018] Figure 7 for Figure 5 Front view of the center push rod assembly;

[0019] Figure 8 for Figure 2A schematic diagram of the upper part of the center-mounted protrusion mechanism;

[0020] Figure 9 for Figure 8 An enlarged schematic diagram showing the location of the protrusions on the tube wall of the pressure tube structure in the middle extrusion section;

[0021] Figure 10 for Figure 3 A three-dimensional structural diagram of the assembled middle limiting structure, outer bushing, and push rod components;

[0022] Figure 11 for Figure 10 Top view;

[0023] Figure 12 for Figure 10 A schematic diagram of the structure viewed in axial section.

[0024] Figure 13 for Figure 12 Cross-sectional view along the CC direction;

[0025] Figure 14 for Figure 10 A three-dimensional structural diagram of the middle limiting structure;

[0026] Figure 15 for Figure 14 Axial sectional view of the central limiting structure;

[0027] Figure 16 for Figure 3 A three-dimensional structural diagram of the elastic compression part;

[0028] Figure 17 for Figure 16 A three-dimensional structural diagram of the elastic compression part from another perspective;

[0029] Figure 18 for Figure 16 Front view of the elastic compression section;

[0030] Figure 19 for Figure 18 Left view of the elastic compression section;

[0031] Figure 20 for Figure 18 Right view of the elastic compression section;

[0032] Figure 21 for Figure 18 Axial cross-sectional view of the elastic compression section;

[0033] Figure 22 for Figure 10 A three-dimensional structural diagram of the inner and outer bushings;

[0034] Figure 23 for Figure 22 Top view of the inner and outer bushings;

[0035] Figure 24 for Figure 22 A cross-sectional view of the inner and outer bushings along the axial direction;

[0036] Figure 25 for Figure 24 A schematic diagram showing a radial section view at the location of the second through hole;

[0037] Figure 26 for Figure 3 A schematic diagram of the three-dimensional structure of the tightly fitted inner ring;

[0038] Figure 27 for Figure 26 A cross-sectional view of the centrally fitted tight sleeve along the axial direction;

[0039] Figure 28 for Figure 26 A cross-sectional view of the centrally fitted unit along the radial direction;

[0040] Figure 29 for Figure 3 Schematic diagram of the structure of the concave die sleeve;

[0041] Figure 30 for Figure 29 Top view of the central cavity die sleeve;

[0042] Figure 31 for Figure 29 A cross-sectional view of the central concave die sleeve along the axial direction;

[0043] Figure 32 for Figure 3 Schematic diagram of the middle mounting base;

[0044] Figure 33 for Figure 32 A cross-sectional view of the mounting base along the axial direction;

[0045] Figure 34 for Figure 1 A partial structural diagram of the center-mounted bump mechanism;

[0046] Figure 35 for Figure 34 A cross-sectional view along the central axis.

[0047] The annotations in the attached figures are explained as follows:

[0048] 01-The mechanism for creating raised dots;

[0049] 10-Elastic pressing part; 101-Pressing head; 102-Pressing shell; 102a-Second opening; 102b-First opening; 103-Elastic element;

[0050] 20 - Extrusion section;

[0051] 30-Top rod assembly; 301-First rod segment; 3011-Conical surface; 3012-Neck; 3013-Main rod segment; 302-Second rod segment; 30a-First connecting hole;

[0052] 40 - Limiting structure; 401 - First core sleeve segment; 4011 - First stepped surface; 402 - Second core sleeve segment; 40b - First inner hole; 40a - First through hole;

[0053] 50 - Outer bushing; 501 - First bushing section; 502 - Second bushing section; 5021 - Second stepped surface; 50a - Second through hole; 50b - Second inner hole; 50b1 - Tapered hole section; 50c - Clearance groove;

[0054] 60-Drive component; 601-Drive rod; 601a-Second connecting hole; 602-Main body;

[0055] 70 - Base;

[0056] 80 - Mounting plate;

[0057] 90-Supporting part; 901-Supporting column; 902-Supporting plate;

[0058] 100 - Tightening sleeve; 100a - Third through hole; 100b - Third connecting hole; 100c - Third inner hole;

[0059] 110-Die sleeve; 110a-Fourth inner hole; 110b-Avoiding hole portion; 1101-First die sleeve section; 1102-Second die sleeve section; 1102a-Fourth connecting hole; 1103-Protrusion; 11031-First limiting surface; 11032-Second limiting surface;

[0060] 120 - Mounting base; 120a - Stepped hole; 1202a - Fifth connecting hole; 1201 - First mounting base section; 1202 - Second mounting base section;

[0061] 130 - Linear bearing;

[0062] 02-Tube structure; 021-Protrusion. Detailed Implementation

[0063] To enable those skilled in the art to better understand the technical solutions of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. In the embodiments of this application, the terms "first," "second," etc., are only used to distinguish the same or similar features, and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.

[0064] Please refer to Figures 1 to 4 , Figure 1 This is a schematic diagram of the structure of the embossing mechanism 01 in one embodiment of this application; Figure 2 for Figure 1 A top view of the embossing mechanism 01, wherein the upper part of the embossing mechanism 01 is radially sectioned to illustrate the internal structure. Figure 3 for Figure 2 Schematic sectional view along the middle AA direction; Figure 4 for Figure 3 A magnified view of part A in the middle.

[0065] This embodiment provides a bump-forming mechanism 01, including a push rod component 30 and a drive component 60. In this embodiment, the drive component 60 is specifically a cylinder, which drives the push rod component 30 to move axially. The axial direction can be referenced... Figure 3 It is understood that the radial and circumferential directions mentioned in this application are defined with reference to the push rod component 30. The radial direction is the direction perpendicular to the axial direction, and the center of the corresponding circle in the circumferential direction coincides with the axis L of the push rod component 30.

[0066] The embossing mechanism 01 in this embodiment also includes a pressing part 20, which is specifically designed in this embodiment as follows: Figure 4 The spherical portion is shown. Furthermore, of the pressing portion 20 and the push rod component 30 of the embossing mechanism 01, one has a conical surface 3011, which can contact the other, such as... Figure 4 As shown, the push rod component 30 has a conical surface 3011, which is a surface with a gradually changing radial dimension. The cross-sectional profile can be a slanted line. Figure 4 (As shown), it can also be an arc.

[0067] For details on the structure of the push rod component 30, please refer to [reference needed]. Figures 5 to 7 understand, Figure 5 for Figure 3 A three-dimensional structural diagram of the center push rod component 30; Figure 6 for Figure 5 Axial sectional view of the center push rod component 30. Figure 7 for Figure 5 Front view of the center top rod component 30.

[0068] The push rod component 30 includes a first rod segment 301 and a second rod segment 302. The radial dimension of the first rod segment 301 is smaller than the radial dimension of the second rod segment 302. Both the first rod segment 301 and the second rod segment 302 can be circular rod structures. The first rod segment 301 is provided with a conical surface 3011, and the first rod segment 301 is also designed with a large and small segment shape. That is, due to the design of the conical surface 3011... Figure 5The upper part of the first rod segment 301 is the narrow neck 3012 of the first rod segment 301. The main rod segment 3013 of the first rod segment 301 is connected to the narrow neck 3012 through the tapered surface 3011. The second rod segment 302 with a larger radial dimension is mainly used to connect with the drive component 60, which will be described in detail later.

[0069] Next, let’s look at the extrusion part 20. The extrusion part 20 is arranged radially on the outer periphery of the top rod component 30. Specifically, in this embodiment, the bumping mechanism 01 may include multiple extrusion parts 20. The multiple extrusion parts 20 may be evenly distributed in the circumferential direction to simultaneously extrude and bump at multiple points.

[0070] Furthermore, the embossing mechanism 01 includes a limiting structure 40 for restricting the axial movement of the pressing part 20. Since the push rod member 30 has a tapered surface 3011, and the pressing part 20 is axially limited by the axial limiting structure 40, when the driving member 60 drives the push rod member 30 to move axially, the radial position of the pressing part 20 changes due to the contact engagement between the tapered surface 3011 of the push rod member 30 and the pressing part 20. For example... Figure 4 As shown, the extrusion section 20 is in the first position at this time, and the radial outer side of the extrusion section 20 and the axis of the push rod component 30 have a first radial distance D1. The extrusion section 20 and the narrow neck 3012 of the push rod component 30 are in radial contact. It can be understood that when the driving component 60 drives the push rod component 30 in... Figure 4 When moving downwards from the perspective, as it contacts and presses against the conical surface 3011, the conical surface 3011 will push the extrusion part 20 to move radially away from the axis of the push rod member 30 and reach the second position. In the second position, the radial outer side of the extrusion part 20 and the axis of the push rod member 30 have a second radial distance (not shown in the figure), and the first radial distance D1 is less than the second radial distance.

[0071] In this application, "outer" and "inner" refer to the direction away from the axis L of the push rod component 30, which is radially defined as "outer" and "inner". Similarly, "upper" and "lower" refer to the direction away from the axis L. Figure 3 The angular reference point is the vertical axis. Therefore, Figure 3 The vertical arrangement of the components is merely a specific example. In this case, the conical surface 3011 on the push rod component 30 is inclined inward from bottom to top. Obviously, it is not limited to this; for example, the drive component 60 may be arranged in a different way. Figure 4 From the upper viewpoint, with the top rod component 30 positioned below, the inclined surface 3011 tilts outward from bottom to top. The working principle is the same, so it will not be discussed again here.

[0072] Can be combined Figure 8 and Figure 9 understand, Figure 8 for Figure 2A schematic diagram of the upper part of the center-mounted protrusion mechanism 01; Figure 9 for Figure 8 An enlarged schematic diagram of the location of the protrusion 021 formed on the tube wall of the pressure tube structure 02 in the middle extrusion section 20.

[0073] In the first position, since the first radial distance D1 between the axis L of the extrusion part 20 and the push rod component 30 is relatively small, when making protrusions 021 on the tube wall of the tube structure 02, the tube structure 02 can be placed on the outer periphery of the extrusion part 20 when the extrusion part 20 is in the first position. As long as the first radial distance D1 is not greater than the inner diameter of the tube structure 02, the tube structure 02 can be sleeved onto the outer periphery of the extrusion part 20. The first radial dimension D1 can be slightly smaller than the inner diameter of the tube structure 02 so that the tube structure 02 can be smoothly inserted. After insertion, the extrusion part 20 is located in the cavity of the tube structure 01 and on the inner side of the tube wall of the tube structure 01.

[0074] Then, the push rod assembly 30 can be driven in Figure 4 Moving downwards from the viewing angle, the extrusion part 20 will contact the conical surface 3011 of the push rod component 30. As the radial dimension of the contact position with the conical surface 3011 gradually increases, the extrusion part 20 moves radially away from the axis L, and the radial distance between the extrusion part 20 and the axis L gradually increases until it reaches a second position, making the distance between the extrusion part 20 and the axis L reach a second radial distance. At this time, the extrusion part 20 will radially outwards abut against the inner surface of the tube wall of the push tube structure 02, causing the tube wall to deform at the position corresponding to the extrusion part 20, forming... Figure 9 The convex point 021 is shown in the diagram. Obviously, the second radial distance is related to the size of the convex point 021 that needs to be made in the tube structure 02. The larger the radial size of the convex point 021, the larger the second radial distance can be, and vice versa.

[0075] Therefore, in this embodiment, when the protrusion mechanism 01 is used to protrude the protrusion 021, the extrusion part 20 is located inside the tube structure 02. Compared with the processing method mentioned in the background art, where the punch press directly stamps the protrusion from the outside of the tube structure, the processing method in this embodiment, where the extrusion part 20 gradually extrudes the tube wall of the tube structure 02 from the inside out to form the protrusion 021, is less likely to cause impact deformation to the tube structure 02. In addition, the protrusion structure 01 in this embodiment can be provided with multiple extrusion parts 20 evenly distributed circumferentially, so that multiple protrusions 021 can be processed at one time. Compared with the method of stamping one protrusion at a time in the background art, the processing efficiency can be improved. Moreover, after the distribution position of multiple extrusion parts 20 in the circumferential direction is determined, the position of the protrusion 021 formed by extrusion on the tube structure 02 is also relatively determined. Compared with the method of forming multiple protrusions by multiple stampings in the background art, the processing accuracy of the protrusion 021 can be improved.

[0076] The components of the entire embossing mechanism 01 will now be described in detail to provide a more complete understanding of the embossing mechanism 01 in this embodiment.

[0077] like Figures 10 to 15 As shown, Figure 10 for Figure 3 A three-dimensional structural diagram of the assembled middle limiting structure 40, outer bushing 50 and push rod component 30; Figure 11 for Figure 10 Top view; Figure 12 for Figure 10 A schematic diagram of the structure viewed in axial section. Figure 13 for Figure 12 Cross-sectional view along the CC direction; Figure 14 for Figure 10 A three-dimensional structural diagram of the middle limiting structure 40; Figure 15 for Figure 14 Axial sectional view of the middle limiting structure 40.

[0078] The embossing mechanism 01 in this embodiment also includes a limiting structure 40, which is used to limit the extrusion part 20 axially. Figure 14 As shown, the limiting structure 40 is a hollow inner core sleeve structure with a first inner hole 40b extending axially, and the sidewall of the limiting structure 40 has a first through hole 40a extending radially. Figure 12 , 13 It is understood that part of the extrusion portion 20 is located within the first through hole 40a, and part is located between the outer peripheral wall of the push rod component 30 and the inner peripheral wall of the limiting structure 40. Specifically, in the first position, part of the extrusion portion 20 is located between the narrow neck 3012 of the push rod component 30 and the inner peripheral wall of the limiting structure 40; in the second position, part of the extrusion portion 20 is located between the conical surface 3011 of the push rod component 30 and the inner peripheral wall of the limiting structure 40, and part of the extrusion portion 20 extends radially outward from the side wall of the limiting structure 40.

[0079] As can be seen from the principle of the extrusion forming protrusion 021 described above, as long as the extrusion part 20 switches from the first position to the second position, the extrusion part 20 can move radially outward to increase the distance between the outer side and the axis L so as to press against the inner surface of the tube structure 02. Therefore, in the first position, it is not limited whether the extrusion part 20 extends radially outward from the side wall of the limiting structure 40, but in the second position, it must extend radially outward from the side wall of the limiting structure 40 so as to press against the inner surface of the tube wall of the tube structure 02. Moreover, in the first position, the extrusion part 20 does not necessarily have to contact the narrow neck 3012. For example, it can also contact the upper end of the cone surface 3011 with a relatively small radial dimension. As the radial dimension of the cone surface 3011 increases when moving downward, the extrusion part 20 can also move radially outward. In other words, the push rod component 30 can also be without the narrow neck 3012, or the upper end of the push rod component 30 can be directly set as a cone segment. However, it is understandable that by setting a narrow neck 3012 with a constant diameter, in the first position, the extrusion part 20 contacts the narrow neck 3012, and the extrusion part 20 will not bear the axial component force, so the state is relatively stable.

[0080] In this embodiment, a limiting structure 40 is provided to limit the extrusion part 20 axially, so that when it engages with the top rod component 30 in a tapered manner, it can move radially in the first through hole 40a, thereby abutting against or releasing the inner surface of the tube structure 02, and the limiting of the extrusion part 20 is relatively stable.

[0081] It should be understood that the extrusion part 20 is not limited to a spherical part. The extrusion part 20 can also be a part of a spherical part. For example, the extrusion part 20 includes a hemispherical structure and a pressing structure. The hemispherical structure is used to press against the inner surface of the top tube structure 02, and the pressing structure is used to contact and cooperate with the top rod component 30. Here, the extrusion part 20 is set as a spherical part, and the contact and cooperation with the conical surface 3011 is smoother. In addition, the spherical feature of the spherical part is also related to the structure of the protrusion 021 on the tube structure 02. In this embodiment, the protrusion 021 is roughly a hemispherical pit. Therefore, the extrusion part 20 is set as a spherical part or includes a part of a spherical part. However, obviously, the extrusion part 20 can be adaptively adjusted according to the different shapes of the protrusion 021. For example, if the protrusion 021 is an elliptical or square pit, the shape of the part of the extrusion part 20 corresponding to the protrusion 021 can be set as elliptical or square, etc.

[0082] Further analysis reveals that in the above embodiment, the push rod component 30 is provided with a conical surface 3011. When it moves axially with the extrusion part 20, the distance between the axis L of the extrusion part 20 and the push rod component 30 changes, thereby pushing the extrusion part 20 to move radially outward to abut against the extrusion tube structure 02. Based on this principle, it is clear that the conical surface can also be provided on the extrusion part 20 to... Figure 12From a certain perspective, if the conical surface is provided on the extrusion section 20, the conical surface can be inclined from top to bottom in a direction close to the axis L, that is, inclined inward. The push rod component 30 can be arranged to contact the conical surface on the extrusion section 20 axially. When the push rod component 30 moves downward, it can also push the extrusion section 20 to move radially outward. In comparison, machining an annular conical surface 3011 on the push rod component 30 is simpler, as it is not necessary to machine a conical surface on each extrusion section 20. The extrusion section 20 can be set as a regular structure, such as a spherical part, and the limiting fit between the extrusion section 20 and the limiting structure 40 is easier to achieve.

[0083] In this embodiment, the extrusion part 20 is set as a spherical part, which can be a steel ball. The steel ball has high strength so that it can extrude the protrusion 021 when pressing the tube structure 02. Of course, the extrusion part 20 can also be made of other materials, as long as it can extrude the tube structure 02 to form the required protrusion 021.

[0084] You can continue to refer to this. Figures 16 to 21 understand, Figure 16 for Figure 3 A three-dimensional structural diagram of the elastic pressing part 10; Figure 17 for Figure 16 A three-dimensional structural schematic diagram of the elastic compression part 10 from another perspective; Figure 18 for Figure 16 Front view of the elastic compression part 10; Figure 19 for Figure 18 Left view of the elastic pressing part 10; Figure 20 for Figure 18 Right view of the elastic pressing part 10; Figure 21 for Figure 18 Axial cross-sectional view of the elastic pressing part 10.

[0085] The embossing mechanism 01 in this embodiment further includes an elastic pressing part 10, which presses against the extrusion part 20 radially toward the axis L of the push rod component 30. Specifically, the elastic pressing part 10 includes a pressing head 101, which can directly press against the extrusion part 20. (Please refer to...) Figure 4 and Figure 8 , Figure 9It is understood that the pressure head 101 elastically presses against the extrusion part 20 radially. Therefore, when the tube structure 02 is not installed, the extrusion part 20 is forced to always contact the push rod component 30, thus ensuring that the extrusion part 20 will not detach radially outward from the first through hole 40a of the limiting structure 40. In other words, the elastic pressure part 10 acts as an anti-detachment structure for the extrusion part 20. When processing the protrusion 021 begins, the tube structure 02 is inserted to the outer periphery of the extrusion part 20. During insertion, the pressure head 101 can be pushed radially outward, so that the tube wall of the tube structure 02 is located between the elastic pressure part 10 and the extrusion part 20. When the extrusion part 20 extrudes and forms the protrusion 021, the protrusion 021 will press against the pressure head 101 radially outward. When the tube structure 02 is removed after processing the protrusion 021, the pressure head 101 of the elastic pressure part 10 can re-press against the outside of the extrusion part 20. As can be seen, the elasticity is known, and the elastic pressing part 10 can be omitted. For example, the first through hole 40a is a stepped hole with a stepped surface facing the top rod component 30. The pressing part 20 can be provided with a limiting surface, which can press against the stepped surface of the first through hole 40a radially, and can also prevent the pressing part 20 from detaching from the first through hole 40a. However, in comparison, providing the elastic pressing part 10 can reduce the difficulty of setting an anti-detachment structure in the relatively limited space of the first through hole 40a. Moreover, even if the pressing part 20 is worn, the elastic pressing part 10 has an adaptive function, which can always ensure that the pressing part 20 does not detach from the first through hole 40a.

[0086] It can be seen that in this embodiment, the number of elastic pressing parts 10 and the number of extrusion parts 20 can be kept consistent, with each extrusion part 20 equipped with one elastic pressing part 10. Furthermore, there is a first annular gap between the conical surface 3011 and the narrow neck 3012, and the inner peripheral wall of the limiting structure 40. The extrusion part 20 cannot fall into the first annular gap between the push rod component 30 and the limiting structure 40; therefore, the radial dimension of the extrusion part 20 is larger than the radial dimension of the first annular gap. The radial dimension of the main rod section 3013 of the first rod section 301 of the push rod component 30 can be slightly smaller than the inner diameter of the limiting structure 40, facilitating the guiding installation of the push rod component 30 and the limiting structure 40, and ensuring their coaxiality.

[0087] In addition, in this embodiment, the elastic pressing part 10 specifically includes a pressing head 101 and an elastic element 103. The elastic element 103 can specifically be a spring. The pressing head 101 is used to press against the squeezing part 20, and the elastic element 103 provides the elastic force for the pressing head 101 to press against the squeezing part 20. This component structure allows the pressing head 101 to be made of a relatively hard material so as to reliably press against the squeezing part 20, and the elastic element 103 facilitates the application of elastic force to the pressing head 101. However, it can be understood that the elastic pressing part 10 can also be a spring or other integral elastic structure, directly elastically contacting and pressing against the squeezing part 20.

[0088] Furthermore, the elastic pressing part 10 also includes a pressing housing 102, with a portion of the pressing head 101 and the elastic member 103 located within the pressing housing 102. For example... Figure 21 As shown, the pressure housing 102 has an inner cavity, and a portion of the pressure head 101 extends out of one end of the pressure housing 102 to press against the compression part 20. An elastic element 103 is disposed on the inner end wall of the other end of the pressure head 101 and the pressure housing 102 to provide elasticity. The pressure housing 102 serves to protect the elastic element 103 and the pressure head 101 and facilitates integral assembly. One end of the pressure housing 102 has a first opening 102b, from which the pressure head 101 extends. The other end of the pressure housing 102 has a second opening 102a to facilitate the insertion of the elastic element 103. The second opening 102a can also be sealed by a plug.

[0089] Please continue to refer to this. Figures 22 to 25 understand, Figure 22 for Figure 10 A three-dimensional structural diagram of the inner and outer bushings 50; Figure 23 for Figure 22 Top view of the inner and outer bushings 50; Figure 24 for Figure 22 A cross-sectional view of the inner and outer bushings 50 along the axial direction; Figure 25 for Figure 24 A schematic diagram of a radial section at the location of the second through hole 50a.

[0090] Combination Figure 4 and Figure 13 It is understood that the embossing mechanism 01 in this embodiment also includes an outer bushing 50. At least a portion of the outer bushing 50 is fitted onto the outside of the limiting structure 40. The side wall of the outer bushing 50 is provided with a second through hole 50a. The elastic pressing part 10 passes through the second through hole 50a to press against the extrusion part 20. Specifically, in this embodiment, the pressing head 101 passes through the second through hole 50a. Part of the pressing head 101 is located in the second through hole 50a, and part can extend out of the second through hole 50a, that is, extend out of the inner peripheral wall of the outer bushing 50, so as to press against the pressing head 101. In this way, the outer bushing 50 can guide the elastic pressing part 10, prevent the elastic pressing part 10 from deviating, and improve the reliability of elastic pressing against the extrusion part 20. Moreover, the outer bushing 50 is located outside the limiting structure 40, and a second annular gap is formed between the outer bushing 50 and the limiting structure 40. In this way, the tube structure 02 will be inserted into the second annular gap during processing, which also plays a good guiding and limiting role in the insertion of the tube structure 02, which helps to ensure the coaxiality of the tube structure 02 and the push rod component 30.

[0091] In addition, such as Figure 14 , 15 As shown, the limiting structure 40 has a first stepped surface 4011. Looking further... Figure 4When the outer side of the outer limiting structure 40 is covered by the outer sleeve of the tube structure 02, one end face of the tube structure 02 along the axial direction can abut against the first step surface 4011 along the axial direction to limit the tube structure 02 in the axial direction, so that the position of the protrusion 021 to be processed on the tube structure 02 corresponds to the extrusion part 20 in the radial direction, thereby more accurately ensuring that the position of the protrusion 021 extruded by the extrusion part 20 is the target position.

[0092] like Figure 22 As shown, the outer bushing 50 has a second inner hole 50b that extends axially. The second inner hole 50b can be provided with a tapered section 50b1. Specifically, the tapered section 50b1 is provided at the end of the outer bushing 50 into which the pipe structure 02 is inserted. Figure 4 In this configuration, the tapered section 50b1 is located at the upper end of the second inner hole 50b. This allows the guide tube structure 02 to be inserted into the second annular gap. The hole wall corresponding to the tapered section 50b1 can also be provided with a clearance groove 50c, such as... Figure 22 , 23 As shown, the clearance groove 50c is used to avoid the protrusion 021 of the tube structure 02, to prevent interference between the inner peripheral wall of the outer bushing 50 and the protrusion 021, and to facilitate the tube structure 02 to exit the protrusion-making mechanism 01 axially after the protrusion 021 is machined.

[0093] You can continue to refer to this. Figures 26 to 28 understand, Figure 26 for Figure 3 A schematic diagram of the three-dimensional structure of the 100mm tightly fitted middle section; Figure 27 for Figure 26 A cross-sectional view of the 100mm centrally fitted axially; Figure 28 for Figure 26 A cross-sectional view of the centrally fitted 100 along the radial direction.

[0094] The embossing mechanism 01 in this embodiment also includes a tight sleeve 100, which is provided with a third through hole 100a extending radially, such as... Figure 2 , 3 As shown, part of the elastic pressing part 10 is located inside the third through hole 100a. Specifically, the pressing shell 102 can be installed into the third through hole 100a. The pressing shell 102 can be press-fitted into the third through hole 100a, or it can be threaded into the hole wall corresponding to the third through hole 100a, etc. The setting and tight sleeve 100 facilitates the installation of the elastic pressing part 10. It can be seen that the tight sleeve 100 can also be omitted. For example, the elastic pressing part 10 can be directly installed on the outer bushing 50. The setting and tight sleeve 100 here can provide relatively more space to assemble the elastic pressing part 10.

[0095] At this time, at least a portion of the outer bushing 50 is located inside the clamping sleeve 100, that is, the clamping sleeve 100 has a third inner hole 100c, the outer bushing 50 is inserted into the clamping sleeve 100, and the clamping sleeve 100, the outer bushing 50, the limiting structure 40 and the push rod component 30 are all coaxially arranged.

[0096] Let's look again. Figures 29 to 31 As shown, Figure 29 for Figure 3 Schematic diagram of the structure of the concave die sleeve 110; Figure 30 for Figure 29 Top view of the central die sleeve 110; Figure 31 for Figure 29 A cross-sectional view of the concave die sleeve 110 along the axial direction.

[0097] The embossing mechanism 01 in this embodiment further includes a concave mold sleeve 110. The concave mold sleeve 110 has a fourth inner hole 110a that extends axially. The inner peripheral wall of the concave mold sleeve 110 has an annular protrusion 1103 that protrudes radially. One side surface of the protrusion 1103 is a first limiting surface 11031 facing the limiting structure 40, and the other side surface is a second limiting surface 11032.

[0098] like Figure 22 As shown, in this embodiment, the outer bushing 50 has a stepped structure, including a first bushing section 501 with a small diameter and a second bushing section 502 with a large diameter. Let's look at... Figure 14 The limiting structure 40 is also a stepped structure, including a small-diameter first core sleeve segment 401 and a large-diameter second core sleeve segment 402.

[0099] Please see Figure 3 , 12 As shown, after assembly, the first core sleeve segment 401 of the limiting structure 40 is located inside the first bushing segment 501, and the second bushing segment 502 abuts against the second core sleeve segment 402 axially. The second core sleeve segment 402 and the second bushing segment 502 are located inside the die sleeve 110, and the second core sleeve segment 402 abuts against the first limiting surface 11031 of the protrusion 1103 axially, while the tight sleeve 100 abuts against one end face of the die sleeve 110 axially. With this arrangement, the die sleeve 110 can provide a good positioning function for the limiting structure 40 and the outer bushing 50. It can be seen that the inner peripheral wall of the die sleeve 110 can also be provided with a stepped surface to serve as the first limiting surface 11031. The inner wall of the die sleeve 110 above the protrusion 1103 can be machined to form an axially extending clearance 110b. The inward-facing side of the clearance 110 is open to facilitate the insertion of the second core sleeve segment 402 and the second bushing segment 502 into the die sleeve 110.

[0100] In this embodiment, the driving component 60 includes a driving rod 601. A portion of the driving rod 601 can be located inside the die sleeve 110. The driving rod 601 and the second core sleeve segment 402 can be located on different sides of the axial direction of the protrusion 1103. The driving rod 601 can be drivenly connected to the push rod component 30. The second rod segment 302 of the push rod component 30 serves as a connecting end for drively connecting to the push rod component 30. The second rod segment 302 can be provided with a first connecting hole 30a, for example, a... Figure 6 The radially penetrating hole structure shown allows the drive rod 601 to be provided with a second connecting hole 601a (shown in...). Figure 33 The second connecting hole 601a and the first connecting hole 30a can be aligned radially, allowing the insertion of fasteners such as fastening pins or bolts to connect the drive rod 601 and the push rod component 30. When the drive rod 601 moves axially, it drives the push rod component 30 to move axially. It can be seen that in this embodiment, the push rod component 30 is provided with a second rod segment 302 with a relatively large radial dimension, which facilitates providing a longer first connecting hole 30a for a more reliable connection with the drive component 60. Obviously, the push rod component 30 can also be without a second rod segment 302, or the second rod segment 302 and the main rod segment 3013 of the first rod segment 301 can be designed with the same diameter.

[0101] In addition, the protrusion 1103 of the aforementioned die sleeve 110 also has a second limiting surface 11032. When the extrusion part 20 is in the second position, the upper end surface of the drive rod 601 can abut against the second limiting surface 11032, which serves as a limiting function. When the drive rod 601 abuts against the second limiting surface 11032, it indicates that the extrusion part 20 is in the second position and there is no need to continue driving the push rod component 30 to move.

[0102] Please continue to refer to this. Figures 32 to 33 As shown, Figure 32 for Figure 3 Schematic diagram of the middle mounting base 120; Figure 33 for Figure 32 A cross-sectional view of the mounting base 120 along the axial direction.

[0103] Simultaneously combined Figure 1 and Figure 3 It is understood that the embossing mechanism 01 in this embodiment may further include a mounting base 120, which has a stepped hole 120a extending axially. The die sleeve 110 is a stepped structure that matches the stepped hole 120a, including a first die sleeve section 1101 with a smaller radial dimension and a second die sleeve section 1102 with a larger radial dimension. The die sleeve 110 is embedded in the stepped hole 120a; and the tight sleeve 100 simultaneously abuts against one end face of both the die sleeve 110 and the mounting base 120 axially. Figure 26As shown, the clamping sleeve 100 is also provided with a third connecting hole 100b, through which fasteners such as fastening bolts can pass to fix the clamping sleeve 100 to the mounting base 120. The second bushing section 502 of the outer bushing 50 correspondingly has a second stepped surface 5021, and the clamping sleeve 100 can abut against the second stepped surface 5021 axially, so the outer bushing 50 is axially limited by the clamping sleeve 100 and the die sleeve 110. The second die sleeve section 1102 forms an annular flange relative to the first die sleeve section 1101, and a fourth connecting hole 1102a extending axially can be provided on the annular flange for fixed connection by inserting fasteners and mounting plate 80.

[0104] Furthermore, in this embodiment, neither the second bushing segment 502 nor the second core sleeve segment 402 is a circular structure. Both consist of two opposing and parallel straight sidewalls and two opposing and arc-shaped sidewalls. The inner hole portion of the die sleeve 110 above the protrusion 1103 can be configured with a matching shape. This prevents relative rotation between the limiting structure 40 and the outer bushing 50. Specifically, the limiting structure 40, the outer bushing 50, and the fourth inner hole 110a of the die sleeve 110 are circumferentially limited and connected, ensuring that the second through hole 50a and the first through hole 40a are radially aligned. The second bushing segment 502 and the second core sleeve segment 402 are non-circular, and the fourth inner hole 110a of the die sleeve 110 is configured with a matching non-circular shape.

[0105] In this embodiment, by providing the mounting base 120, it is convenient to simultaneously assemble and limit and tighten the sleeve 100, the die sleeve 110, the outer bushing 50, and the limiting structure 40.

[0106] Please continue to refer to this. Figure 34 and Figure 35 , Figure 34 for Figure 1 A partial structural schematic diagram of the convex dot mechanism 01; Figure 35 for Figure 34 A cross-sectional view along the central axis.

[0107] The embossing mechanism 01 also includes a mounting plate 80, a base 70, and a support 90. The support 90 includes support columns 901. The mounting base 120 is axially fixed to the mounting plate 80. The mounting plate 80 and the base 70 are connected by the support columns 901, and multiple support columns 901 can be provided. The drive rod 601 of the drive component 60 passes through the mounting plate 80. The main body 602 of the drive component 60 is mounted on the base 70. In this embodiment, the main body 602 of the drive component 60 is specifically the cylinder barrel portion of a cylinder, which is fixed to the base 70. The base 70 can be a plate structure. The mounting plate 80 and the base 70 are spaced apart axially to allow for the movement of the drive rod 601.

[0108] The aforementioned mounting base 120 can be fixed to the mounting plate 80. The mounting base 120 is provided with a fifth connecting hole 1202a, which can be fixed by inserting a fastener into the mounting base 120. Figure 32 In the middle, the mounting base 120 has a stepped structure, including a first mounting base section 1201 with a smaller radial dimension and a second mounting base section 1202 with a larger radial dimension. The second mounting base section 1202 forms an annular flange relative to the first mounting base section 1201. The fifth connecting hole 1202a can pass through the annular flange axially so as to connect with the mounting plate 80.

[0109] In addition, such as Figure 1 As shown, the support part 90 of the embossing mechanism 01 may also include a support plate 902, which may include two support plates 902 arranged opposite to each other. The support column 901 is located between the two support plates 902. The support plate 902 can support and protect the entire embossing mechanism 01. It can be seen that a ring of support plates 902 can also be provided for the part of the embossing mechanism 01 corresponding to the mounting plate 80 and the base 70 to form a box structure.

[0110] like Figure 1 As shown, the bump-forming mechanism 01 also includes a linear bearing 130, which is mounted on the mounting plate 80. The drive rod 601 is axially movable through the linear bearing 130 and the mounting plate 80, which facilitates the reliable and stable movement of the drive rod 601.

[0111] This embodiment also provides a method for processing protrusions 021 of a tube structure 02, based on the protrusion-making mechanism 01 described above, the method including:

[0112] The tube structure 02 is sleeved on the outside of the extrusion section 20 and the push rod component 30; specifically, it is inserted between the push rod component 30, the limiting structure 40, and the outer bushing 50 in this embodiment.

[0113] The drive rod component 30 moves axially, causing the conical surface 3011 to contact the other. Figure 4 Even if the conical surface 3011 of the push rod component 30 contacts the extrusion part 20, it will push the extrusion part 20 to move radially away from the axis L of the push rod component 30;

[0114] When the extrusion section 20 moves to the second position, the extrusion section 20 extrudes the inner surface of the tube wall of the tube structure 02, forming protrusions 021, such as... Figure 8 and Figure 9 As shown.

[0115] It can be seen that after the protrusion 021 is processed, the push rod component 30 can move in the opposite direction, and the extrusion force of the extrusion part 20 on the tube structure 02 is removed, and the tube structure 02 can exit the protrusion mechanism 01. For the protrusion mechanism 01 in this embodiment, after the tube structure 02 exits, the elastic pressing part 10 presses the extrusion part 20 again so that it abuts against the outer peripheral wall of the push rod component 30.

[0116] The tube structure 02 in this embodiment can be a capillary, specifically a capillary used in an electronic expansion valve. Of course, the tube structure with protrusions 021 can also be used in other devices.

[0117] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A protrusion-forming mechanism for processing protrusions (021) on the wall of a pipe structure (02), characterized in that, The bumping mechanism (01) includes a push rod component (30) and a drive component (60), the drive component (60) being used to drive the push rod component (30) to move axially; the bumping mechanism (01) also includes a pressing part (20) and a limiting structure (40) for restricting the axial movement of the pressing part (20). The extrusion part (20) is in a first position, and the axes of the extrusion part (20) and the push rod component (30) have a first radial distance; one of the extrusion part (20) and the push rod component (30) has a conical surface (3011), and the extrusion part (20) is in a second position, where the conical surface (3011) abuts against the other, and the axes of the extrusion part (20) and the push rod component (30) have a second radial distance, the first radial distance being less than the second radial distance, and the extrusion part (20) can abut against the inner surface of the tube wall of the tube structure (02) to form the protrusion (021).

2. The protrusion-forming mechanism according to claim 1, characterized in that, The limiting structure (40) is an inner core sleeve structure. The side wall of the limiting structure (40) has a first through hole (40a) that is radially through. Part of the extrusion part (20) is located inside the first through hole (40a) and part is located between the outer peripheral wall of the top rod component (30) and the inner peripheral wall of the limiting structure (40). In the second position, a portion of the extrusion part (20) extends radially outward from the sidewall of the limiting structure (40); at least a portion of the push rod component (30) is located within the limiting structure (40).

3. The protrusion-forming mechanism according to claim 2, characterized in that, The bumping mechanism also includes an elastic pressing part (10), which presses the extrusion part (20) radially inward.

4. The protrusion-forming mechanism according to claim 3, characterized in that, The bumping mechanism also includes an outer bushing (50), at least a portion of which is sleeved on the outside of the limiting structure (40). The side wall of the outer bushing (50) is provided with a second through hole (50a), and the elastic pressing part (10) passes through the second through hole (50a) to press against the squeezing part (20).

5. The protrusion-forming mechanism according to claim 4, characterized in that, The elastic pressing part (10) includes a pressing head (101) and an elastic member (103). The pressing head (101) is used to press against the extrusion part (20), and the elastic member (103) provides the elastic force of the pressing head (101) pressing against the extrusion part (20).

6. The protrusion-forming mechanism according to claim 5, characterized in that, The elastic pressing part (10) includes a pressing shell (102), a portion of the pressing head (101) and the elastic element (103) are located inside the pressing shell (102); The bumping mechanism (01) further includes a clamping sleeve (100), which is provided with a radially extending third through hole (100a), a portion of which is located within the third through hole (100a); at least a portion of which is located within the clamping sleeve (100), and the pressing head (101) extends radially inward through the third through hole (100a) to pass through the second through hole (50a).

7. The protrusion-forming mechanism according to claim 4 or 5, characterized in that, The embossing mechanism (01) further includes a die sleeve (110), at least a portion of the outer bushing (50) and the limiting structure (40) are located inside the die sleeve (110) and are circumferentially connected to the die sleeve (110).

8. The protrusion-forming mechanism according to claim 7, characterized in that, The outer bushing (50) has a stepped structure, including a first bushing section (501) with a small diameter and a second bushing section (502) with a large diameter; the limiting structure (40) has a stepped structure, including a first core bushing section (401) with a small diameter and a second core bushing section (402) with a large diameter. The first core sleeve segment (401) is located inside the first bushing segment (501), and the second bushing segment (502) abuts against the second core sleeve segment (402) along the axial direction. Both the second core sleeve segment (402) and the second bushing segment (502) are non-circular structures. Both the second core sleeve segment (402) and the second bushing segment (502) are located inside the concave mold sleeve (110). The inner hole wall of the concave mold sleeve (110) matches the shape of the second core sleeve segment (402) and the second bushing segment (502).

9. The protrusion-forming mechanism according to claim 8, characterized in that, The inner peripheral wall of the concave mold sleeve (110) has a radially protruding protrusion (1103) or a stepped portion, and one side surface of the protrusion (1103) or the stepped surface of the stepped portion is a first limiting surface (11031), and the second core sleeve segment (402) abuts against the first limiting surface (11031) axially.

10. The protrusion-forming mechanism according to claim 9, characterized in that, The driving component (60) includes a driving rod (601), a portion of which is located inside the die sleeve (110), and the driving rod (601) and the second core sleeve segment (402) are located on different sides of the protrusion (1103) in the axial direction. The other side surface of the protrusion (1103) is the second limiting surface (11032), the pressing part (20) is in the second position, and the driving rod (601) abuts against the second limiting surface (11032) axially.

11. The protrusion-forming mechanism according to claim 8, characterized in that, The embossing mechanism (01) further includes a clamping sleeve (100), which is provided with a radially extending third through hole (100a), a portion of which is located within the third through hole (100a); at least a portion of which is located within the clamping sleeve (100), and the pressing head (101) extends radially inward through the third through hole (100a) to pass through the second through hole (50a). The clamping sleeve (100) abuts axially against one end face of the concave die sleeve (110) and the second bushing segment (402).

12. The protrusion-forming mechanism according to claim 11, characterized in that, The protrusion-making mechanism (01) further includes a mounting base (120), the mounting base (120) having a stepped hole (120a), the die sleeve (110) having a stepped structure matching the stepped hole (120a), and the die sleeve (110) being embedded in the stepped hole (120a); the clamping sleeve (100) simultaneously abuts against one end face of the mounting base (120) along the axial direction; The embossing mechanism (01) further includes a mounting plate (80), a base (70), and a support (90). The mounting base (120) is axially fixed to the mounting plate (80), and the mounting plate (80) and the base (70) are connected by the support (90). The driving component (60) has a driving rod (601), which passes through the mounting plate (80) and is inserted into the die sleeve (110), and is connected to the push rod component (30) in a transmission manner. The main body (602) of the driving component (60) is mounted on the base (70).

13. The embossing mechanism according to any one of claims 1-6, characterized in that, The extrusion section (20) includes a spherical section, or the extrusion section (20) includes a portion of the spherical section.

14. The embossing mechanism according to any one of claims 1-6, characterized in that, The bumping mechanism (01) includes a plurality of extrusion parts (20), which are evenly distributed circumferentially.

15. A method for processing protrusions in a tube structure (02), characterized in that, Based on the bump-forming mechanism (01) according to any one of claims 1-14, the method includes: The tube structure (02) is fitted over the outside of the extrusion section (20) and the push rod component (30); Drive the push rod component (30) to move axially, so that the conical surface (3011) contacts the other, and push the extrusion part (20) to move radially away from the axis of the push rod component (30) to the second position. The extrusion part (20) extrudes the inner surface of the tube wall of the tube structure (02) to form the protrusion (021).

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