A ball valve body positioning tool

Abstract

This invention provides a ball valve body positioning fixture. The ball valve body positioning fixture includes a base, a first positioning plate fixed to one end of the base, and a second positioning plate movably mounted to the other end of the base. A positioning platform is provided on the surface of the first positioning plate facing the second positioning plate, and a rotatable positioning seat is coaxially mounted on the outer surface of the positioning platform. A quick clamp is provided on the second positioning plate, and a positioning pressure block is installed at the end of the quick clamp. The positioning pressure block and the positioning seat are coaxially opposite each other. This invention uses the positioning platform, positioning seat, and positioning pressure block clamped onto the ball valve body to achieve effective positioning of the ball valve body, significantly improving welding quality and yield.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a ball valve body positioning fixture. Background Technology

[0002] like Figure 4 As shown, a small tube 101 inclined at 45 degrees is provided on the ball valve body 100, and the small tube 101 is fixed to the ball valve body 100 by welding. Existing welding methods lack dedicated positioning fixtures, and welding operations rely on the welder's experience to manually position the small tube 101, resulting in unstable quality, poor manual positioning accuracy, large welding angle deviations (±3° or more), and reduced yield. Furthermore, due to the need for frequent positioning adjustments, the welding time for a single workpiece is approximately 5 minutes, which is inefficient and requires highly skilled welders. Utility Model Content

[0003] The purpose of this utility model is to provide a ball valve body positioning fixture, which improves welding quality and product quality.

[0004] The technical solution of this utility model is: a ball valve body positioning fixture, including a base, a first positioning plate fixed to one end of the base, and a second positioning plate movably installed at the other end of the base; a positioning platform is provided on the surface of the first positioning plate facing the second positioning plate, and a rotatable positioning seat is coaxially installed on the outer surface of the positioning platform; a quick clamp is provided on the second positioning plate, and a positioning pressure block is installed at the end of the quick clamp, and the positioning pressure block is coaxially opposite to the positioning seat.

[0005] Preferably, the positioning block, positioning platform, and positioning seat are all cylindrical.

[0006] Preferably, the positioning seat includes a first shaft portion and a second shaft portion that are simultaneously connected to the positioning platform. The first shaft portion is disposed close to the positioning platform, and the edge of the first shaft portion extends to the outside of the second shaft portion to form a step for engaging with the inner bore of the ball valve body.

[0007] Preferably, the positioning block includes a bolt and a third shaft portion and a fourth shaft portion connected by the bolt. The third shaft portion is disposed near the quick clamp, and one end of the bolt extends to the outside of the third shaft portion and is inserted into the quick clamp. The edge of the third shaft portion extends to the outside of the fourth shaft portion to form a step for engaging with the inner bore of the ball valve body.

[0008] Preferably, the first positioning plate has a limiting plate on the surface of the positioning platform, the limiting plate and the base form an angle α, and the limiting plate has a limiting groove.

[0009] Preferably, α = 45°.

[0010] Preferably, the limiting groove is a U-shaped groove.

[0011] Preferably, the quick clamp is a lever-type manual quick clamp.

[0012] Preferably, the positioning platform is provided with a first through hole flush with the axis and a first threaded hole located on both sides of the first through hole; the first positioning plate is provided with a countersunk hole corresponding to the first threaded hole, and a screw connected to the first threaded hole is installed in the countersunk hole; the positioning seat is provided with a second threaded hole flush with the first through hole; the first positioning plate is provided with a second through hole flush with the first through hole; and a screw connected to the second threaded hole is installed in the first through hole and the second through hole.

[0013] Preferably, the base, the first positioning plate, and the second positioning plate are made of aluminum alloy.

[0014] Compared with related technologies, the beneficial effects of this utility model are as follows:

[0015] I. This utility model adopts a positioning platform, positioning seat and positioning pressure block clamped on the ball valve body to achieve effective positioning of the ball valve body, which greatly improves welding quality and yield.

[0016] Second, this utility model sets a limiting plate on the first positioning plate, and a limiting groove is set on the limiting plate for clamping a pipe on the ball valve body, so that the ball valve body is tilted. During welding, only the small pipe needs to be facing upwards, eliminating the need for manual 45° angle calibration, and improving the welding angle accuracy to within ±0.5°, reducing the technical requirements for operators.

[0017] Third, the single-piece clamping time of this utility model is reduced from 3 minutes to 30 seconds, and the positioning repeatability reaches ±0.1mm;

[0018] Fourth, this utility model can be perfectly matched with laser welding machines, and the welding speed can be increased by 200% (2 minutes / piece), and the yield rate can be increased to over 99%. Attached Figure Description

[0019] Figure 1 A three-dimensional structural schematic diagram of the ball valve body positioning fixture provided by this utility model;

[0020] Figure 2 for Figure 1 Left side view;

[0021] Figure 3 for Figure 1 The right-side view;

[0022] Figure 4 A schematic diagram showing the ball valve body positioned and installed on the ball valve body positioning fixture provided by this utility model;

[0023] Figure 5 for Figure 4 A sectional view.

[0024] In the attached diagram: 1. Base; 2. First positioning plate; 21. Countersunk hole; 22. Second through hole; 3. Second positioning plate; 4. Positioning platform; 41. First through hole; 42. First threaded hole; 5. Positioning seat; 51. First shaft; 52. Second shaft; 53. Second threaded hole; 6. Quick clamp; 7. Positioning block; 71. Third shaft; 72. Fourth shaft; 8. Bolt; 9. Limiting plate; 91. Limiting groove; 10. Ball valve body; 101. Small tube. Detailed Implementation

[0025] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0026] like Figure 1 As shown, the ball valve body positioning fixture provided in this embodiment includes a base 1, a first positioning plate 2, a second positioning plate 3, a positioning platform 4, a positioning seat 5, a quick clamp 6, a positioning pressure block 7, a bolt 8, and a limiting plate 9. The positioning pressure block 7, the positioning platform 4, and the positioning seat 5 are all cylindrical.

[0027] One end of the base 1 along its length is fixedly connected to the first positioning plate 2, and the other end of the base 1 along its length is fitted with the second positioning plate 3 by bolts.

[0028] A positioning platform 4 is provided on the surface of the first positioning plate 2 facing the second positioning plate 3. A rotatable positioning seat 5 is coaxially mounted on the outer surface of the positioning platform 4. The positioning seat 5 includes a first shaft portion 51 and a second shaft portion 52 that are simultaneously connected to the positioning platform 4. The first shaft portion 51 is located close to the positioning platform 4, and the edge of the first shaft portion 51 extends to the outside of the second shaft portion 52 to form a step for engaging with the inner bore of the ball valve body (e.g., ...). Figure 5 (As shown).

[0029] like Figure 1 , Figure 3 , Figure 5As shown, the positioning platform 4 has a first through hole 41 flush with the axis and first threaded holes 42 located on both sides of the first through hole 41. The first positioning plate 2 has a countersunk hole 21 corresponding to the first threaded hole 42, and a screw connected to the first threaded hole 42 is installed in the countersunk hole 21. The positioning seat 5 has a second threaded hole 53 flush with the first through hole 41, and the first positioning plate 2 has a second through hole 22 flush with the first through hole 41. A screw connected to the second threaded hole 53 is installed in the first through hole 41 and the second through hole 22. The positioning seat 5 is mounted on the positioning platform 4 only by the screw, which allows the positioning seat 5 to rotate to adjust the positioning angle of the ball valve body 10.

[0030] The second positioning plate 3 is equipped with a quick clamp 6, and a positioning block 7 is installed at the end of the quick clamp 6. The positioning block 7 is coaxially arranged opposite to the positioning seat 5. The quick clamp 6 is a lever-type manual quick clamp; if purchased from Yiheda, the clamping force can reach 500 kgf.

[0031] like Figure 1 , Figure 5 As shown, the positioning block 7 includes a bolt 8 and a third shaft portion 71 and a fourth shaft portion 72 connected by the bolt 8. The third shaft portion 71 is located near the quick clamp 6. One end of the bolt 8 extends to the outside of the third shaft portion 71 and is inserted into the quick clamp 6. The edge of the third shaft portion 71 extends to the outside of the fourth shaft portion 72 to form a step for engaging with the inner bore of the ball valve body.

[0032] like Figure 5 As shown, the quick clamp 6 has a hole inside its end rod, and the bolt 8 extends into this hole. Figure 4 , Figure 5 As shown, the ball valve body 10 is effectively positioned by the positioning platform 4, positioning seat 5 and positioning pressure block 7 clamping the two ends of the inner hole of the ball valve body 10 and clamping it with the quick clamp 6.

[0033] like Figure 1 , Figure 2 As shown, a limiting plate 9 is bolted to the surface of the positioning platform 4 on the first positioning plate 2. An angle α, α = 45°, is formed between the limiting plate 9 and the base 1. The limiting plate 9 is provided with a limiting groove 91. The limiting groove 91 is a U-shaped groove that can hold a pipe body on the ball valve body 10.

[0034] The base 1, the first positioning plate 2, and the second positioning plate 3 are made of aluminum alloy (such as 6061) to ensure that they will not deform during long-term use. The bolts 8 on the positioning block 7 can be finely adjusted to achieve a positioning accuracy of ±0.1mm.

[0035] like Figure 4As shown, after the ball valve body 10 is clamped, the small tube 101 is simply placed vertically at the corresponding position of the ball valve body 10, first spot welded to fix it, and then fully welded. This greatly saves the time of repeated positioning. Moreover, vertical welding is easier to guarantee quality than inclined welding, and there is no need for manual repeated angle calibration.

[0036] The ball valve body positioning fixture provided by this utility model can be installed on a welding positioner to achieve multi-angle automatic welding.

[0037] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A ball valve body positioning fixture, comprising a base (1), characterized in that, It also includes a first positioning plate (2) fixed to one end of the base (1) and a second positioning plate (3) movably installed at the other end of the base (1); a positioning platform (4) is provided on the surface of the first positioning plate (2) facing the second positioning plate (3), and a rotatable positioning seat (5) is coaxially installed on the outer surface of the positioning platform (4); a quick clamp (6) is provided on the second positioning plate (3), and a positioning pressure block (7) is installed at the end of the quick clamp (6), and the positioning pressure block (7) is coaxially opposite to the positioning seat (5).

2. The ball valve body positioning fixture according to claim 1, characterized in that, The positioning block (7), positioning platform (4), and positioning seat (5) are all cylindrical.

3. The ball valve body positioning fixture according to claim 1, characterized in that, The positioning seat (5) includes a first shaft portion (51) and a second shaft portion (52) that are simultaneously connected to the positioning platform (4). The first shaft portion (51) is located close to the positioning platform (4), and the edge of the first shaft portion (51) extends to the outside of the second shaft portion (52) to form a step for engaging with the inner bore of the ball valve body.

4. The ball valve body positioning fixture according to claim 1, characterized in that, The positioning block (7) includes a bolt (8) and a third shaft portion (71) and a fourth shaft portion (72) connected by the bolt (8). The third shaft portion (71) is located near the quick clamp (6). One end of the bolt (8) extends to the outside of the third shaft portion (71) and is inserted into the quick clamp (6). The edge of the third shaft portion (71) extends to the outside of the fourth shaft portion (72) to form a step for engaging with the inner hole of the ball valve body.

5. The ball valve body positioning fixture according to claim 1, characterized in that, The first positioning plate (2) has a limiting plate (9) on the surface of the positioning platform (4). The limiting plate (9) and the base (1) form an angle α. The limiting plate (9) has a limiting groove (91).

6. The ball valve body positioning fixture according to claim 5, characterized in that, α＝45°。 7. The ball valve body positioning fixture according to claim 5, characterized in that, The limiting groove (91) is a U-shaped groove.

8. The ball valve body positioning fixture according to claim 1, characterized in that, The quick clamp (6) is a lever-type manual quick clamp.

9. The ball valve body positioning fixture according to claim 1, characterized in that, The positioning platform (4) is provided with a first through hole (41) flush with the axis and a first threaded hole (42) located on both sides of the first through hole (41). The first positioning plate (2) is provided with a countersunk hole (21) corresponding to the first threaded hole (42). A screw connected to the first threaded hole (42) is installed in the countersunk hole (21). The positioning seat (5) is provided with a second threaded hole (53) flush with the first through hole (41). The first positioning plate (2) is provided with a second through hole (22) flush with the first through hole (41). A screw connected to the second threaded hole (53) is installed in the first through hole (41) and the second through hole (22).

10. The ball valve body positioning fixture according to claim 1, characterized in that, The base (1), the first positioning plate (2), and the second positioning plate (3) are made of aluminum alloy.

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