A welding positioning device for welding ball valve machining

Abstract

The utility model relates to welding positioning device for welding ball valve processing belongs to valve processing technical field. Welding positioning device includes bottom horizontal support plate, is provided with rotating motor on bottom support, and the upper surface of transition support plate is provided with support screw rod post, and the support screw rod post is connected with the positioning seat, and the top of support screw rod post is provided with positioning press plate, and the inner wall of door type frame is provided with welding torch. The utility model has the advantages that: when using, the positioning seat for positioning is connected on the support screw rod post, the connecting flange is placed to the positioning seat cover, then the valve body is placed to the connecting flan, and the valve body and the connecting flange are pressed each other through the positioning press plate, so as to prevent the loosening between the connecting flange and the valve body, the welding ball valve is driven to rotate through the rotating motor, so as to facilitate the welding of welding torch, solve the problem that the welding ball valve is positioned more complicated in the prior art, solve the problem that the welding efficiency is low caused by manual rotation of the welding ball valve in the prior art.

Description

Technical Field

[0001] This utility model relates to a welding positioning device for processing welded ball valves, belonging to the field of valve processing technology. Background Technology

[0002] Welded ball valves are generally made by welding the valve body and flange together. In the actual production process, the metal cylinder is first machined on a lathe to obtain the complete valve body and flange. Then the valve body and flange are spliced ​​together and welded to obtain the entire welded ball valve. Welded ball valves are widely used in various fields. Their superior quality and high-performance stability are unmatched by ordinary cast steel ball valves. Currently, the service life of welded ball valves is much longer than that of cast steel ball valves.

[0003] To improve the welding precision of ball valves, the industry generally uses welding positioning devices to position the valve body and flange. For example, the Chinese authorized utility model patent with authorization announcement number CN215509727U, entitled "A Welding Device for High-Precision Ball Valve Processing," uses a fixed strip and a moving strip on the base plate, a first slider, a double-ended lead screw, a worm gear, a worm, a rotating rod, and a first rotating wheel inside the base plate, a cover plate, a compression spring, and a contact block to align and compress the ball valve to be welded. The welding head is aligned with the welding point by a round rod, a second slider, a telescopic rod, a welding head, a rotating block, and a wire. The above structure achieves welding positioning of various parts of the ball valve.

[0004] The above-mentioned patents have the following problems when used: In the aforementioned patent, the ball valve to be welded is placed on the base plate. By rotating the first rotating wheel, the rotating rod is driven to rotate. The rotation of the rotating rod drives the double-ended lead screw to rotate through the worm gear and worm. The rotation of the double-ended lead screw drives the moving bar to move towards the center through the first slider, thus fixing the ball valve in the middle of the base plate. The above fixing structure is too complicated when fixing the ball valve, and it is a manually rotated fixing structure, resulting in low fixing efficiency.

[0005] 2. In the above-mentioned patent, after the ball valve and its welded parts are fixed, the ball valve cannot be rotated. In the actual welding process, it is generally necessary to weld the valve body and the periphery of the flange. The above structure leads to the need to frequently manually rotate the ball valve during welding, resulting in low welding efficiency. Summary of the Invention

[0006] The technical problem to be solved by this utility model is to provide a positioning fixture for valve processing, so as to solve the problems faced in the industry.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: a welding positioning device for processing a welded ball valve, the welding positioning device being used for welding positioning of the welded ball valve, the welded ball valve including a valve body and connecting flanges installed at the upper and lower ends of the valve body, the connecting flanges being connected to the valve body by welding, the welding positioning device including a bottom horizontal support plate, a bottom bracket being provided at the bottom of the horizontal support plate, a rotary motor being provided on the bottom bracket, the motor shaft of the rotary motor passing through the horizontal support plate and extending above the horizontal support plate, a transition support plate being provided at the top of the motor shaft of the rotary motor, a support screw being provided on the upper surface of the transition support plate, a positioning seat being sleeved on the support screw, the connecting flange being placed on the positioning seat, a positioning pressure plate being provided above the support screw, a portal frame being provided on the bottom horizontal support plate, and a welding torch being provided on the inner wall of the portal frame.

[0008] Preferably, the support screw column includes a first circular support column, and a screw is disposed above the first circular support column.

[0009] Preferably, the positioning seat includes a positioning seat body, the center of which is provided with a positioning insertion hole, the positioning insertion hole extending from the upper surface to the lower surface of the positioning seat body, and the upper surface of the positioning seat body is also provided with an upper insertion hole, the upper insertion hole and the positioning insertion hole being coaxially arranged.

[0010] Preferably, the positioning plate includes a plate seat, and the center of the plate seat is provided with an internal threaded hole, which extends from the upper surface to the lower surface of the plate seat.

[0011] Preferably, the upper surface of the pressure plate seat is also provided with a plurality of protrusions.

[0012] Compared with the prior art, the advantages of this utility model are as follows: In use, the positioning seat for positioning is sleeved on the support screw column, and the connecting flange is placed on the positioning seat to fix the connecting flange. Then, the valve body is placed on the connecting flange, and the connecting flange is placed on top of the valve body. This achieves the purpose of fixing the valve body and multiple connecting flanges. The positioning pressure plate is engaged with the screw through the inner screw hole, and the positioning pressure plate presses the valve body and the upper and lower connecting flanges against each other to prevent loosening between the connecting flanges and the valve body. The rotating motor drives the welding ball valve to rotate, so as to facilitate welding with the welding gun. This solves the problem of the cumbersome positioning of the welding ball valve in the prior art, and solves the problem of low welding efficiency caused by manually rotating the welding ball valve in the prior art. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] Figure 1 This is an isometric drawing of this utility model.

[0015] Figure 2 This is a structural schematic diagram of a welded ball valve.

[0016] Figure 3 This is an exploded view of a welded ball valve.

[0017] Figure 4 This is the front view of this utility model.

[0018] Figure 5 yes Figure 4 AA sectional view.

[0019] Figure 6 This is a schematic diagram of a welded ball valve being fixed in place.

[0020] Figure 7 yes Figure 6 A sectional view.

[0021] Figure 8 yes Figure 7 The exploded diagram.

[0022] Figure 9 This is a structural diagram of the supporting screw column.

[0023] Figure 10 This is a schematic diagram of the positioning seat.

[0024] Figure 11 This is a structural diagram of the positioning pressure plate.

[0025] In the diagram: 1. Welding ball valve; 101. Valve body; 102. Connecting flange; 2. Welding positioning device; 3. Horizontal support plate; 4. Bottom bracket; 5. Rotary motor; 6. Transition support plate; 7. Support screw column; 701. First circular support column; 702. Screw; 8. Positioning seat; 801. Positioning seat body; 802. Positioning insertion hole; 803. Upper insertion hole; 9. Positioning pressure plate; 901. Pressure plate seat body; 902. Internal threaded hole; 903. Boss; 10. Portal frame; 11. Welding torch. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments: like Figures 1 to 11The diagram illustrates a welding positioning device for processing a ball valve. The welding positioning device 2 is used for welding positioning of a ball valve 1. The ball valve 1 includes a valve body 101 and connecting flanges 102 installed at the upper and lower ends of the valve body 101. The connecting flanges 102 are connected to the valve body 101 by welding. The welding positioning device 2 includes a horizontal support plate 3. A bottom bracket 4 is provided at the bottom of the horizontal support plate 3. A rotary motor 5 is mounted on the bottom bracket 4. The motor shaft of the rotary motor 5 passes through the horizontal support plate 3 and extends above it. A transition support plate 6 is provided at the top of the motor shaft of the rotary motor 5. A support screw 7 is provided on the upper surface of the transition support plate 6. A positioning seat 8 is sleeved on the support screw 7. The connecting flange 102 is placed on the positioning seat 8. A positioning pressure plate 9 is provided above the support screw 7. A portal frame 10 is also provided on the bottom horizontal support plate 3. A welding torch 11 is provided on the inner wall of the portal frame 10.

[0027] like Figure 10 As shown, the supporting screw column 7 includes a first circular supporting column 701, and a screw 702 is provided above the first circular supporting column 701. The first circular supporting column 701 is provided so that the positioning seat 8 can be sleeved, and the screw 702 is provided so that the positioning pressure plate 9 can be installed and connected.

[0028] like Figure 10 As shown, Figure 10 This is a schematic diagram of the positioning seat. The positioning seat 8 includes a positioning seat body 801. A positioning insertion hole 802 is provided at the center of the positioning seat body 801. The positioning insertion hole 802 extends from the upper surface to the lower surface of the positioning seat body 801. An upper insertion hole 803 is also provided on the upper surface of the positioning seat body 801. The upper insertion hole 803 and the positioning insertion hole 802 are coaxially arranged. In this patent, the diameter of the positioning insertion hole 802 of the positioning seat 8 is larger than the outer diameter of the first circular support column 701, and the diameter of the positioning insertion hole 802 is 0.05mm-0.1mm larger than the outer diameter of the first circular support column 701. This ensures that the positioning seat 8 and the first circular support column 701 are coaxially arranged.

[0029] like Figure 11 As shown, the positioning plate 9 includes a plate seat 901, and the center of the plate seat 901 is provided with an internal threaded hole 902, which extends from the upper surface to the lower surface of the plate seat 901.

[0030] To facilitate the rotation of the pressure plate seat 901, multiple protrusions 903 are provided on the upper surface of the pressure plate seat 901. When rotating the pressure plate seat 901, the operator can easily rotate the pressure plate seat 901 by grasping the protrusions 901, which improves the convenience of operation.

[0031] In use, the positioning seat 8 is first fitted onto the first circular support column 701 of the support screw column 7. At this time, the positioning seat 8 will fall onto the transition support plate 6. The positioning seat 8 in this patent is provided with an upper insertion hole 803. The connecting flange 102 to be welded, which is placed below, is placed into the upper insertion hole 803. In this patent, the diameter of the upper insertion hole 803 is larger than the outer diameter of the connecting flange 102, and the diameter of the upper insertion hole 803 is 0.05mm-0.1mm larger than the outer diameter of the connecting flange 102. This ensures that the connecting flange 102 can be located as centrally as possible.

[0032] The valve body 101 is inserted into the connecting flange 102 located below. The connecting flange 102 is provided with an inner positioning groove, which can position the valve body 101 and the connecting flange 102 together. The connecting flange 102 located above is then fitted onto the top of the valve body 101. At this time, the valve body 101 and the connecting flanges 102 located above and below are combined together to form the welded ball valve 1.

[0033] Then, the positioning plate 9 is engaged with the screw 702 through the internal threaded hole 902. The positioning plate 9 rotates through the internal threaded hole 902 and presses against the connecting flange 102 above the welding ball valve 1, thereby pressing the connecting flange 102 above the welding ball valve 1, the valve body 101 and the connecting flange 102 below the welding ball valve 1 to prevent loosening during welding.

[0034] After the ball valve 1 is positioned and fixed, the connection between the valve body 101 and the connecting flange 102 is welded using a welding torch 11 to achieve the purpose of welding the valve body 101 and the connecting flange 102.

[0035] During the welding process, the rotary motor 5 is started, which drives the transition support plate 6 and the welding ball valve 1 placed on the transition support plate 6 to rotate, so that the welding torch 11 can weld the welding ball valve 11 from all sides, thereby improving the welding efficiency and welding effect.

[0036] In this patent, the mounting structure of the welding torch 11 adopts the mounting structure of the welding head in the utility model patent with authorization announcement number CN215509727U, so as to realize the position movement of the welding torch 11. The specific structure will not be described in this patent.

[0037] In this patent, by setting a positioning seat 8, the connecting flange 102 placed at the bottom can be quickly positioned. In this patent, different models of connecting flanges 102 are matched with positioning seats 8 of different inner diameters, thereby achieving the purpose of rapid positioning and solving the problem of low efficiency caused by manual rotation for fixing in the prior art, thus improving the fixing efficiency.

[0038] It should be emphasized that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A welding positioning device (2) for welding ball valve processing, wherein the welding positioning device (2) is used for welding positioning of the welding ball valve (1), the welding ball valve (1) includes a valve body (101) and connecting flanges (102) installed at the upper and lower ends of the valve body (101), the connecting flanges (102) being connected to the valve body (101) by welding, characterized in that: The welding positioning device (2) includes a horizontal support plate (3), a bottom bracket (4) is provided at the bottom of the horizontal support plate (3), a rotary motor (5) is provided on the bottom bracket (4), the motor shaft of the rotary motor (5) passes through the horizontal support plate (3) and extends above the horizontal support plate (3), a transition support plate (6) is provided at the top of the motor shaft of the rotary motor (5), a support screw column (7) is provided on the upper surface of the transition support plate (6), a positioning seat (8) is sleeved on the support screw column (7), the connecting flange (102) is placed on the positioning seat (8), a positioning pressure plate (9) is provided above the support screw column (7), a portal frame (10) is also provided on the bottom horizontal support plate (3), and a welding torch (11) is provided on the inner wall of the portal frame (10).

2. The welding positioning device for processing welded ball valves according to claim 1, characterized in that: The support screw column (7) includes a first circular support column (701), and a screw (702) is provided above the first circular support column (701).

3. The welding positioning device for processing welded ball valves according to claim 1, characterized in that: The positioning seat (8) includes a positioning seat body (801), and a positioning insertion hole (802) is provided at the center of the positioning seat body (801). The positioning insertion hole (802) extends from the upper surface of the positioning seat body (801) to the lower surface. The upper surface of the positioning seat body (801) is also provided with an upper insertion hole (803). The upper insertion hole (803) and the positioning insertion hole (802) are coaxially arranged.

4. The welding positioning device for processing welded ball valves according to claim 1, characterized in that: The positioning plate (9) includes a plate seat (901), and the center of the plate seat (901) is provided with an internal thread hole (902), which extends from the upper surface of the plate seat (901) to the lower surface.

5. The welding positioning device for processing welded ball valves according to claim 4, characterized in that: The upper surface of the pressure plate seat (901) is also provided with a plurality of bosses (903).

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