Machining and positioning tool for valve body

Abstract

The valve body machining and positioning tool comprises a main body block, a telescopic driving unit and an inner supporting mechanism, and the inner supporting mechanism comprises a wedge-shaped block and a plurality of inner supporting blocks; when the valve body needs to be positioned, the valve body is aligned to the inner supporting blocks and arranged on the inner supporting blocks in a sleeving mode, after sleeving, the telescopic driving unit can pull the wedge-shaped block to move in the axis direction of the through hole, and therefore the wedge-shaped block can drive the multiple inner supporting blocks to expand outwards till the inner supporting blocks abut against the inner circumference of the valve body, and supporting and positioning of the valve body are achieved; in the process that the valve body is sleeved with the inner supporting block, the handle on the valve body is aligned with and placed in the profiling positioning groove in the main body block, the rotation freedom degree of the valve body is limited through the profiling positioning groove, and therefore the stability of the valve body in the welding process can be guaranteed.

Description

Technical Field

[0001] The present application relates to the field of manufacturing, and in particular to a machining and positioning tool for a valve body. Background Art

[0002] The ball valve is a commonly used valve component in mechanical structures. Its main components include valve body, valve core, valve seat, valve stem, handle, seals, etc.

[0003] During the manufacturing process of the ball valve, it is necessary to first open a welding hole on the outer periphery of the valve body and weld a thin vacuum pipe at the position of the welding hole. The vacuum pipe is used to create a vacuum inside the valve body. However, in the actual production process, there is a lack of positioning tools that match the valve body of the ball valve, making it difficult to ensure welding efficiency and welding quality. Utility Model Content

[0004] The embodiment of the present application provides a valve body processing and positioning tool, which can realize the positioning of the valve body and is easy to use.

[0005] The embodiment of the present application provides a valve body processing and positioning tool, including a main body block, a telescopic drive unit and an internal support mechanism;

[0006] A through hole is provided on the main body block, the telescopic drive unit is provided on the main body block and the telescopic end of the telescopic drive unit is coaxially provided in the through hole; a contour positioning groove is provided on the side of the main body block away from the telescopic drive unit, the handle on the valve body is provided in the contour positioning groove, and the contour positioning groove can limit the rotation of the valve body around the axis of the through hole;

[0007] The internal support mechanism includes a wedge block and multiple internal support blocks. The side wall of the wedge block is wedge-fitted with the internal support block, and the wedge block is connected to the telescopic end of the telescopic drive unit. The valve body to be welded is sleeved on the multiple internal support blocks, and the multiple internal support blocks are driven by the wedge block to be supported on the inner circumferential wall of the valve body along the radial direction of the valve body.

[0008] The processing positioning tooling of the present application has at least the following beneficial effects:

[0009] The processing and positioning tooling of the present application includes a main block, a telescopic driving unit and an internal support mechanism, and the internal support mechanism includes a wedge block and multiple internal support blocks; when the valve body needs to be positioned, the valve body is aligned with the internal support block and inserted into the internal support block. After insertion, the telescopic driving unit can pull the wedge block to move in the axial direction of the through hole. Due to the wedge-shaped cooperation between the wedge block and the internal support block, the wedge block can drive multiple internal support blocks to expand outward until the internal support block and the inner periphery of the valve body are against each other, thereby achieving support and positioning of the valve body. In the process of the valve body being inserted into the internal support block, the handle on the valve body is aligned with and placed in the contoured positioning groove on the main block. The contoured positioning groove limits the rotational freedom of the valve body, thereby ensuring the stability of the valve body during welding processing. On the other hand, the present application uses a wedge block to drive the internal support block to internally support or loosen the valve body to be welded. The movement method is simple and reliable. After welding is completed, the valve body can be quickly pulled out along the axial direction of the through hole, which can improve on-site production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0011] Figure 1 is a schematic diagram of a valve body in an embodiment of the present application;

[0012] Figure 2 It is a structural schematic diagram of the processing and positioning tooling in the embodiment of the present application;

[0013] Figure 3 It is a structural schematic diagram of the processing and positioning tooling in the embodiment of the present application (illustrating the ball valve);

[0014] Figure 4 yes Figure 3 The structural diagram of the main block in the figure;

[0015] Figure 5 yes Figure 2 Structural diagram of the middle inner support mechanism;

[0016] Figure 6 is a front view of a processing and positioning tool in an embodiment of the present application;

[0017] Figure 7 yes Figure 6 Middle AA schematic diagram;

[0018] Figure 8 yes Figure 7 The enlarged view of point A in the middle;

[0019] Fig. 9It is a schematic diagram of the structure of the processing and positioning tooling in other embodiments of the present application;

[0020] Fig.10 yes Fig. 9 Front view of the

[0021] The description of the reference numerals is as follows: 10, main body block; 10a, through hole; 10b, contoured positioning groove; 11, positioning boss; 11a, guide through groove;

[0022] 20. telescopic drive unit; 21. telescopic end;

[0023] 30, inner support mechanism; 31, wedge block; 31a, first wedge surface; 311, T-shaped guide rail; 32, inner support block; 32a, second wedge surface; 32b, supporting arc surface; 321, T-shaped guide groove; 322, limiting part; 40, angle adjustment plate; 40a, adjustment hole; 41, connecting bolt;

[0024] 50. Valve body; 50a. Welding hole; 51. Handle; 52. Vacuum pipe. DETAILED DESCRIPTION

[0025] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0027] like Figure 1 As shown, Figure 1 (a) shows the structure of the valve body to be welded. Figure 1(b) shows a front view of the valve body to be welded; during the manufacturing process of the ball valve of this embodiment, a vacuum pipe 52 needs to be welded on the outer peripheral side of the valve body 50. The function of the pipe is to create a vacuum inside the valve body 50. The specific welding process is to first open a welding hole 50a (step hole) on the outer peripheral wall of the valve body 50 along the radial direction of the valve body, and then one end of the vacuum pipe 52 is coaxially inserted into the welding hole 50a, and the inner peripheral wall of the welding hole 50a and the vacuum pipe 52 are welded together by welding equipment. Due to the design requirements of the ball valve product itself, it is generally required that the axis of the welding hole 50a and the axis of the handle 51 form a predetermined angle θ, and the predetermined angle θ can be 20 degrees to 60 degrees, such as 40 degrees, 45 degrees, 60 degrees, etc.

[0028] like Figure 2 and Figure 3 As shown, this embodiment discloses a valve body processing and positioning tool, which can be used for positioning the valve body 50 of the ball valve during welding processing, thereby ensuring the welding quality of the valve body 50 and the vacuum pipe 52 and improving the welding efficiency.

[0029] like Figure 2 As shown, the processing and positioning tooling of this embodiment includes a main body block 10, a telescopic driving unit 20 and an internal support mechanism 30. The telescopic driving unit 20 and the internal support mechanism 30 are both arranged on the main body block 10. The telescopic driving unit 20 is used to drive the internal support mechanism 30 to move. The internal support mechanism 30 is used to be internally supported in the valve body 50 to be welded, so as to ensure the stability of the valve body 50 during welding. The specific structure is described as follows:

[0030] like Figure 4 As shown, the main body block 10 is in the shape of a square block as a whole. A through hole 10a is provided at the center of the main body block 10 and passes through both sides of the main body block 10 in the thickness direction. The through hole 10a can provide a telescopic space for the telescopic end 21 of the telescopic drive unit 20. A profiling positioning groove 10b is provided on the first side of the main body block 10 along the thickness direction of the main body block 10 (that is, the axial direction of the through hole). The profiling positioning groove 10b is formed by being recessed inward along the axial direction of the through hole 10a. The size of the profiling positioning groove 10b is the same as that of the handle 51 on the valve body 50. The valve body 50 is matched (the handle has been assembled with the valve body in advance). When the valve body 50 is sleeved on the inner support mechanism 30, the handle 51 on the valve body 50 falls into the contoured positioning groove 10b, and the rotation of the valve body 50 is limited by the contoured positioning groove 10b (that is, the valve body is limited from rotating axially around the through hole). At the same time, since the axis of the handle 51 and the axis of the welding hole 50a have a predetermined angle, after the position of the handle 51 is determined, the welding direction (that is, the axial direction of the welding hole 50a) can naturally be determined, which can facilitate the rapid progress of the welding work.

[0031] like Figure 4As shown, a positioning boss 11 is also provided on the first side of the main block 10. The positioning boss 11 is formed by extending outward in a direction away from the main block 10. The positioning boss 11 is cylindrical in shape and is coaxial with the through hole 10a. In this embodiment, when installing the valve body 50, the inner hole of the valve body 50 can be directly aligned with the positioning boss 11 and inserted. After insertion, the outer peripheral wall of the positioning boss 11 can fit with the inner peripheral wall of the valve body 50, thereby supporting and limiting the valve body 50. Preferably, a chamfer is provided between the end face and the outer peripheral surface of the positioning boss 11. The chamfer facilitates the introduction of the valve body 50 when it is inserted into the positioning boss 11, thereby increasing the installation speed of the valve body 50.

[0032] like Figure 4 As shown, in this embodiment, a guide slot 11a is provided on the positioning boss 11, and the length direction of the guide slot 11a is configured as the radial direction of the positioning boss 11. At least part of the inner support block 32 is provided in the guide slot 11a, and the inner support block 32 can only slide along the length direction of the guide slot 11a (that is, the radial direction of the positioning boss) due to the limitation of the guide slot 11a. In this embodiment, the guide slot 11a is provided to guide and limit the inner support block 32, so as to ensure the stability of the structure.

[0033] like Figure 2 As shown, the telescopic drive unit 20 is arranged on the second side of the main body block 10, and the telescopic end 21 of the telescopic drive unit 20 coaxially passes through the through hole 10a, and the telescopic end 21 is connected to the wedge block 31 of the inner support mechanism 30, wherein the telescopic drive unit 20 is configured as a telescopic cylinder, a telescopic oil cylinder or an electric push rod, and the telescopic end 21 is the telescopic rod of the telescopic cylinder, the telescopic oil cylinder or the electric push rod. In some other schemes, the telescopic drive unit 20 can also refer to the existing telescopic actuator.

[0034] The telescopic end 21 of the telescopic drive unit 20 is detachably connected to the wedge block 31, and the detachable connection is, for example, connected by a threaded member (such as a bolt), a snap connection, etc. In this embodiment, the detachable connection method can realize the quick disassembly and replacement of the telescopic end 21 and the inner support mechanism 30, which is convenient for replacing the inner support mechanism 30 of different specifications according to actual needs.

[0035] like Figure 5 As shown, the internal support mechanism 30 includes a wedge block 31 and a plurality of internal support blocks 32. The side wall of the wedge block 31 is wedge-fitted with the internal support block 32. In this embodiment, the internal support mechanism 30 includes one wedge block 31 and two internal support blocks 32. It should be noted that the specific number of the internal support blocks 32 can be selected according to actual conditions. For example, the internal support mechanism 30 includes one wedge block 31 and four internal support blocks 32. The four internal support blocks 32 are respectively located at four positions of the wedge block 31 and are all wedge-fitted with the wedge block 31.

[0036] like Figure 5 As shown, the two side wall surfaces of the wedge block 31 are configured as first wedge surfaces 31a, and along the radial direction of the positioning boss 11 (i.e., the length direction of the guide groove 11a), the two inner support blocks 32 are respectively located on both sides of the wedge block 31, and the inner support block 32 is configured as a second wedge surface 32a on the side facing the wedge block 31, and the first wedge surface 31a and the second wedge surface 32a are wedge-matched. When the wedge block 31 moves along the axial direction of the through hole 10a, the two inner support blocks 32 can slide in the guide groove 11a, and then be supported on the inner peripheral wall of the valve body 50 or be out of contact with the valve body 50. Preferably, the outer side surface of the inner support block 32 is configured as a support arc surface 32b, and the curvature of the support arc surface 32b matches the curvature of the inner periphery of the valve body 50 to be welded, so that the support arc surface 32b can be attached to the inner peripheral wall of the valve body 50, thereby increasing the contact area with the valve body 50 and improving stability.

[0037] Preferably, Figures 6 to 8 As shown, a T-shaped guide rail 311 is provided on the first wedge surface 31a, and the length direction of the T-shaped guide rail 311 is parallel to the tangent direction of the first wedge surface 31a. A T-shaped guide groove 321 is provided on the second wedge surface 32a of the inner support block 32, and the length direction of the T-shaped guide groove 321 is parallel to the tangent direction of the second wedge surface 32a. At least part of the T-shaped guide rail 311 is slidably arranged in the T-shaped guide groove 321. Through the sliding cooperation between the T-shaped guide rail 311 and the T-shaped guide groove 321, the stability of the wedge block 31 and the inner support block 32 during relative movement can be improved.

[0038] Preferably, Figure 8 As shown, a limiting portion 322 is provided in the T-shaped guide groove 321, and the limiting portion 322 can abut against one end of the T-shaped guide rail 311 along the length direction of the T-shaped guide groove 321. In this embodiment, the limiting portion 322 can be provided to limit the displacement of the relative movement of the wedge block 31 and the inner support block 32, so as to prevent the wedge block 31 from over-expanding and damaging the valve body 50 or jamming the valve body 50 on the inner support block 32 when an abnormality occurs in the telescopic drive unit 20.

[0039] In some other embodiments, such as Fig. 9 and Fig.10 As shown, the processing and positioning tooling also includes an angle adjustment plate 40. The angle adjustment plate 40 is in the shape of a circular plate. The angle adjustment plate 40 can be fixedly mounted on an external device by bolts or other fixings.

[0040] like Fig. 9 and Fig.10 As shown, a large opening is coaxially arranged in the middle of the angle adjustment plate 40 , and the body of the telescopic drive unit 20 is arranged in the large opening, that is, the function of the large opening is to provide an escape position for the body of the telescopic drive unit 20 .

[0041] like Fig. 9 and Fig.10 As shown, the angle adjustment plate 40 is arranged on the second side of the main body block 10, and the angle adjustment plate 40 is coaxially arranged with the through hole 10a on the main body block 10. A plurality of corresponding adjustment holes 40a are arranged on the angle adjustment plate 40 and the main body block 10 along the circumference of the through hole 10a. The angle adjustment plate 40 and the main body block 10 are fixedly connected together through the adjustment holes 40a and the connecting bolts 41. The main body block 10 can be rotated around the axis of the through hole 10a at a certain angle according to actual conditions and then fixed to the angle adjustment plate 40 by the connecting bolts 41. In this way, the angle of the main body block 10 can be rotated to change, and then the posture of the valve body 50 when it is to be welded can be adjusted, which can be convenient for matching different welding equipment or welding requirements, etc., and improve flexibility.

[0042] A working method of the processing positioning tool of this embodiment is as follows:

[0043] 1. Align the inner hole of the valve body 50 with the inner support block 32, and align the handle 51 on the valve body 50 with the contour positioning groove 10b on the main block 10. Then, sleeve the valve body 50 to be welded on the inner support block 32 along the axial direction of the through hole 10a, and put the handle 51 into the contour positioning groove 10b.

[0044] Second, the telescopic drive unit 20 drives the wedge block 31 to be retracted inwardly along the axial direction of the through hole 10a, so that the supporting arc surfaces 32b on the outer sides of the two inner supporting blocks 32 are supported on the inner peripheral wall of the valve body 50, and the positioning of the valve body 50 is completed at this time;

[0045] 3. The vacuum pipe 52 to be welded is coaxially inserted into the welding hole 50a of the valve body 50 (this operation can be performed by a robot or manually), and the vacuum pipe 52 and the valve body 50 are welded together by an external welding device;

[0046] 4. After welding is completed, the telescopic drive unit 20 drives the wedge block 31 to extend outward along the axial direction of the through hole 10a, so that the supporting arc surfaces 32b on the outer sides of the two inner support blocks 32 are out of contact with the inner circumferential wall of the valve body 50, and then the valve body 50 (with the vacuum pipe 52 welded) can be removed.

[0047] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A valve body processing and positioning tool, characterized in that: It comprises a main body block (10), a telescopic drive unit (20) and an internal support mechanism (30); The main body block (10) is provided with a through hole (10a), the telescopic drive unit (20) is arranged on the main body block (10), and the telescopic end (21) of the telescopic drive unit (20) is coaxially arranged in the through hole (10a); a contour positioning groove (10b) is provided on a side of the main body block (10) away from the telescopic drive unit (20), and a handle (51) on the valve body (50) is arranged in the contour positioning groove (10b), and the contour positioning groove (10b) can limit the valve body (50) from rotating around the axis of the through hole (10a); The inner support mechanism (30) comprises a wedge block (31) and a plurality of inner support blocks (32); the side wall of the wedge block (31) is wedge-fitted with the inner support block (32), and the wedge block (31) is connected to the telescopic end (21) of the telescopic drive unit (20); the valve body (50) to be welded is sleeved on the plurality of inner support blocks (32), and the wedge block (31) drives the plurality of inner support blocks (32) to be supported on the inner circumferential wall of the valve body (50) along the radial direction of the valve body.

2. The processing and positioning tool according to claim 1, characterized in that: A positioning boss (11) coaxial with the through hole (10a) is provided on one side of the main body block (10), and the outer peripheral wall of the positioning boss (11) is in contact with the inner peripheral wall of the valve body (50).

3. The processing and positioning tool according to claim 2, characterized in that: The positioning boss (11) is provided with a guide groove (11a) along its radial direction, and at least a portion of the inner support block (32) is arranged in the guide groove (11a).

4. The processing and positioning tool according to claim 1, characterized in that: The telescopic end (21) of the telescopic drive unit (20) is detachably connected to the wedge block (31).

5. The processing and positioning tool according to claim 4, characterized in that: The telescopic drive unit (20) is configured as a telescopic oil cylinder or a telescopic air cylinder or an electric push rod, the telescopic rod of the telescopic oil cylinder or the telescopic air cylinder or the electric push rod is configured as the telescopic end (21), and the telescopic end (21) is detachably connected to the wedge block (31) via a threaded member.

6. The processing and positioning tool according to claim 1, characterized in that: The side of the inner support block (32) facing away from the wedge block (31) is configured as a support arc surface (32b), and the support arc surface (32b) is in contact with the inner peripheral wall of the valve body (50).

7. The processing and positioning tool according to claim 1 or 6, characterized in that: A T-shaped guide rail (311) is arranged on the side wall of the wedge block (31), a T-shaped guide groove (321) is arranged on the inner support block (32), and the T-shaped guide rail (311) is slidably arranged in the T-shaped guide groove (321).

8. The processing and positioning tool according to claim 7, characterized in that: A limiting portion (322) is provided in the T-shaped guide groove (321), and the limiting portion (322) can abut against the T-shaped guide rail (311) along the length direction of the T-shaped guide groove (321). The limiting portion (322) is used to limit the movement of the wedge block (31) in the axial direction of the through hole (10a).

9. The processing and positioning tool according to claim 1, characterized in that: It also includes an angle adjustment plate (40); the angle adjustment plate (40) is attached to the side of the main body block (10) facing away from the valve body (50), and a plurality of corresponding adjustment holes (40a) are arranged on the angle adjustment plate (40) and the main body block (10) along the circumference of the through hole (10a), and the angle adjustment plate (40) and the main body block (10) are connected together by the adjustment holes (40a) and the connecting bolts (41).

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