A valve stem auxiliary positioning fixture

Abstract

This invention belongs to the field of positioning tooling technology, specifically disclosing a valve stem auxiliary positioning tooling. It includes: a clamping mechanism, mounted on a conveying device for transporting the clamping mechanism, comprising a base plate and clamping members mounted on the base plate, wherein the valve is detachably connected to the base plate, and the clamping members are symmetrically arranged on the base plate and can approach each other to clamp the valve; and a positioning mechanism, located on one side of the conveying device, comprising a mounting base, a first moving component, and a second moving component, wherein the first moving component is mounted on the mounting base, the second moving component is mounted on the first moving component, and the second moving component has a positioning member. This invention, through the clamping and positioning mechanisms, enables rapid and accurate positioning of the valve stem under manual operation, providing precise positioning for subsequent valve stem inspection, thus facilitating smooth inspection work.

Description

Technical Field

[0001] This invention relates to the field of positioning tooling technology, and in particular to a valve stem auxiliary positioning tooling. Background Technology

[0002] The valve stem is a crucial component of a valve, used for transmission. It connects to the actuator or handle at the top and directly drives the valve core to move or rotate, thus achieving the valve's opening, closing, or regulating function. Due to the high precision required of the valve stem, it needs to be inspected before completion of machining or use. Before testing the valve stem torque of a ball valve, the valve stem needs to be positioned to ensure precise alignment between the testing device and the stem for accurate torque measurement.

[0003] In the existing technology, the outer circle of the flange is mainly used for positioning to fix the valve. The valve is then transported to the testing station for testing via a conveying device. However, the accuracy of the outer circle positioning method is not high, and a positioning deviation will occur between the valve stem and the testing device. The torque mechanism of the testing station cannot be connected to the valve stem. Therefore, in view of this, the applicant has proposed a valve stem auxiliary positioning fixture. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a valve stem auxiliary positioning fixture to solve the problem of inaccurate valve stem positioning in the prior art.

[0005] To achieve the above and other related objectives, the present invention provides a valve stem auxiliary positioning fixture for positioning the valve stem of a valve, characterized in that the valve stem auxiliary positioning fixture comprises:

[0006] A clamping mechanism is provided on a conveying device for conveying the clamping mechanism. The clamping mechanism includes a base plate and clamping members provided on the base plate. The valve is detachably connected to the base plate. The clamping members are symmetrically arranged on the base plate and can approach each other to clamp the valve.

[0007] A positioning mechanism is disposed on one side of the conveying device. The positioning mechanism includes a mounting base, a first moving component, and a second moving component. The first moving component is disposed on the mounting base, and the second moving component is disposed on the first moving component. The second moving component is provided with a positioning element. The first moving component and the second moving component can drive the positioning element to approach the valve stem to position the valve stem.

[0008] Optionally, the base plate is symmetrically provided with limiting blocks, the clamping member is disposed between the limiting blocks and slidably connected with the limiting blocks, and the clamping member is provided with an adapter groove, wherein when the clamping members are close to each other, the adapter grooves are close to each other to clamp the valve.

[0009] Optionally, the limiting block is provided with a limiting groove, and the clamping member is provided with an adjusting member that extends out of the limiting groove. The adjusting member is rotatably connected to the clamping member. The adjusting member includes a clamping part located in the limiting groove. The clamping part is an irregularly shaped part that can rotate to abut against the groove wall of the limiting groove.

[0010] Optionally, a placement plate is detachably connected to the base plate. The placement plate has multiple positioning grooves of different diameters, which can engage with the base of the valve to position the valve.

[0011] Optionally, the first moving component includes a first slide rail and a stop block. The first slide rail is symmetrically arranged on the mounting base. The stop block is arranged on the mounting base and located at both ends of the first slide rail. A first slider is slidably connected to the first slide rail. The first slider can move closer to or further away from the conveying device. The second moving component is arranged on the first slider.

[0012] Optionally, a fixed frame is provided between the first sliders, the second moving component includes a second slide rail and a mounting plate, the second slide rail is symmetrically arranged on the fixed frame, the second slider is slidably connected on the second slide rail, the second slider is capable of vertical movement, the mounting plate is arranged between the second sliders, and the positioning member is detachably connected to the mounting plate.

[0013] Optionally, the positioning element is provided with a positioning hole, and the valve stem can enter the positioning hole for positioning.

[0014] Optionally, the mounting frame is provided with a telescopic device, the mounting plate is provided with a connector, and the output end of the telescopic device is connected to the connector.

[0015] Optionally, the mounting plate is provided with a fastening assembly, which includes a positioning plate and a locking member. The locking member can pass through the positioning member and be threadedly connected to the mounting plate. The positioning plate is disposed on the locking member and abuts against the positioning member.

[0016] Optionally, the base plate is provided with a handle, and multiple positioning sensors are symmetrically arranged on the base plate.

[0017] As described above, the valve stem auxiliary positioning fixture proposed in this invention has the following beneficial effects:

[0018] (1) Compared with the prior art, the clamping mechanism in this invention can clamp the valve. After the bottom plate is positioned, the valve is further fixed by double-sided clamping, which ensures that the valve and the bottom plate are positioned accurately and stably, and avoids the valve from shifting position during the movement of the conveying device.

[0019] (2) Compared with the prior art, the present invention also has a positioning mechanism that can preposition the valve stem before the valve enters the testing station after the valve is fixed by the clamping mechanism. This ensures that the valve stem can be accurately connected with the torque mechanism after entering the testing station, thereby realizing the torque detection of the valve stem. Attached Figure Description

[0020] Figure 1 The diagram shown is an overall structural schematic diagram of an embodiment of the present invention;

[0021] Figure 2 The diagram shown is a structural schematic of the positioning mechanism in one embodiment of the present invention;

[0022] Figure 3 The diagram shown is a structural schematic of the clamping mechanism in one embodiment of the present invention.

[0023] Figure 4 The diagram shown is a top view of an embodiment of the present invention.

[0024] Figure 5 The diagram shows a cross-sectional view of the positioning mechanism in one embodiment of the present invention.

[0025] Figure 6 The image shown is an enlarged view of point A in one embodiment of the present invention;

[0026] Figure 7 The image shown is a cross-sectional view of the clamping mechanism in one embodiment of the present invention;

[0027] Figure 8 The diagram shown is a schematic representation of the clamping part in one embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] Positioning mechanism 1, mounting bracket 11, fixing plate 12, first slide rail 13, stop block 14, first slider 15, fixing bracket 16, second slide rail 17, second slider 18, mounting plate 19, locking component 110, positioning plate 1101, positioning component 111, positioning hole 112, connecting component 113, telescopic device 114, clamping mechanism 2, base plate 21, limit block 22, limit groove 23, clamping component 24, adjusting component 25, locking part 26, mounting groove 27, placement plate 28, mounting hole 29, lifting hole 210, positioning groove 211, handle 212, position sensor 213, valve 3, valve stem 31, conveyor belt 4. Detailed Implementation

[0030] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0031] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show components relevant to the present invention and are not drawn according to the actual number, shape, and size of components in implementation. In actual implementation, the form, quantity, and proportion of each component can be arbitrarily changed, and the component layout may be more complex. The structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of the present invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of the present invention, should still fall within the scope of the technical content disclosed in the present invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are only for clarity of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the present invention.

[0032] like Figure 1-8 As shown, the present invention proposes an auxiliary positioning fixture for valve stem 31.

[0033] In one exemplary embodiment, a valve stem 31 auxiliary positioning fixture is provided for positioning the valve stem 31 of a valve 3, such as a ball valve. The valve stem 31 auxiliary positioning fixture includes:

[0034] The clamping mechanism 2 is mounted on a conveying device for conveying the clamping mechanism 2. The clamping mechanism 2 includes a base plate 21 and clamping members 24 mounted on the base plate 21. The valve 3 is detachably connected to the base plate 21. The clamping members 24 are symmetrically mounted on the base plate 21 and can approach each other to clamp the valve 3.

[0035] Positioning mechanism 1 is disposed on one side of the conveying device. Positioning mechanism 1 includes a mounting base, a first moving component and a second moving component. The first moving component is disposed on the mounting base, and the second moving component is disposed on the first moving component. The second moving component is provided with a positioning element 111. The first moving component and the second moving component can drive the positioning element 111 to approach the valve stem 31 to position the valve stem 31.

[0036] In this embodiment, the positioning mechanism 1 is located on the left or right side of the conveying device. During the process of hoisting the valve 3 to the clamping mechanism 2 for clamping, it is necessary to ensure that the valve stem 31 of the valve 3 is facing the positioning mechanism 1. As shown in this embodiment, the positioning mechanism 1 is located on the left side of the clamping mechanism 2. Therefore, when hoisting the valve 3, the valve stem 31 is facing left so that the positioning mechanism 1 can position the valve stem 31. The conveying device includes a conveyor belt 4, which can drive the clamping mechanism 2 into or out of the testing station.

[0037] In this embodiment, the clamping mechanism 2 clamps the valve 3. After positioning by the base plate 21, the valve 3 is further fixed by double-sided clamping, ensuring accurate and stable positioning of the valve 3 and the base plate 21, and preventing positional displacement of the valve 3 during movement with the conveying device. Simultaneously, the positioning mechanism 1, after the valve 3 is fixed by the clamping mechanism 2, pre-positions the valve stem 31 before the valve 3 enters the testing station. This ensures that the valve stem 31 can accurately align with the torque mechanism after entering the testing station, enabling torque detection of the valve stem 31.

[0038] In an exemplary embodiment, a limiting block 22 is symmetrically provided on the base plate 21, and a clamping member 24 is disposed between the limiting blocks 22 and slidably connected to the limiting blocks 22. The clamping member 24 is provided with an adapter groove, wherein when the clamping members 24 are close to each other, the adapter grooves are close to each other to clamp the valve 3.

[0039] In this embodiment, the valve 3 is clamped mainly by the limiting blocks 22 moving closer to each other. After the limiting blocks 22 are fixed, the valve 3 is fixed by the adapter groove provided on the limiting blocks 22, thereby realizing the positioning of the valve 3.

[0040] For example, in this embodiment, the adapter groove is V-shaped. When two adapter grooves approach each other, the adapter groove will abut against the outer contour of the valve 3, thereby clamping the valve 3. Since the outer contour of the valve 3 is mostly circular, the V-shaped adapter groove can quickly clamp and position the valve 3.

[0041] For example, the limiting block 22 is provided with a limiting groove 23, and the clamping member 24 is provided with an adjusting member 25 that extends out of the limiting groove 23. The adjusting member 25 is rotatably connected to the clamping member 24. The adjusting member 25 includes a clamping part 26, which is located in the limiting groove 23. The clamping part 26 is an irregularly shaped part, and the clamping part 26 can rotate to abut against the groove wall of the limiting groove 23. In this embodiment, the adjusting member 25 also includes a handle, which is fixed to the clamping member 24 by screws. Therefore, the handle can rotate. When the handle is in a horizontal state, the clamping part 26 does not contact the limiting groove 23, and the clamping part 26 can move freely left and right in the limiting groove 23. When the handle is rotated, the handle drives the clamping part 26 to rotate, and the irregularly shaped clamping part 26 will abut against the groove wall of the limiting groove 23, thereby fixing the handle to the limiting block 22. Since the handle is connected to the clamping member 24, the clamping member 24 can no longer move at this time, thus completing the fixing of the clamping member 24. At this time, the clamping member 24 firmly fixes the valve 3 to the placement plate 28, realizing the positioning of the valve 3 and preventing the valve 3 from shifting its position during movement. In this embodiment, the base plate 21 is also provided with an installation groove 27 for installing the placement plate 28.

[0042] In one exemplary embodiment, a placement plate 28 is detachably connected to the base plate 21. The placement plate 28 is provided with a plurality of positioning grooves 211 of different diameters. The positioning grooves 211 can engage with the base of the valve 3 to position the valve 3.

[0043] In this embodiment, the positioning grooves 211 of different sizes provided on the placement plate 28 can cooperate with the valve 3, and the base of the valve 3 can be inserted into the corresponding positioning groove 211 to achieve positioning.

[0044] For example, in this embodiment, the placement plate 28 is detachably connected to the base plate 21. Specifically, mounting holes 29 are opened on the base plate 21 and the placement plate 28, and the base plate 21 and the placement plate 28 are connected by connecting pins. At the same time, the bottom of the placement plate 28 is also provided with a lifting hole 210, so that the placement plate 28 can be lifted by the lifting mechanism in the detection station, so that the torque mechanism can detect the torque of the valve stem 31.

[0045] It is worth noting that in this embodiment, the positioning groove 211 can be machined according to the valve 3 that needs to be fixed.

[0046] In an exemplary embodiment, the base plate 21 in this embodiment is also provided with a handle 212. The handle 212 can easily drive the clamping mechanism 2 to move in space. At the same time, the base plate 21 is also provided with a positioning sensor 213, which is used to position the device during the conveying process so as to stop at a designated position and realize detection.

[0047] In an exemplary embodiment, the first moving component includes a first slide rail 13 and a stop block 14. The first slide rail 13 is symmetrically arranged on the mounting base, and the stop block 14 is arranged on the mounting base and located at both ends of the first slide rail 13. A first slider 15 is slidably connected to the first slide rail 13. The first slider 15 can move closer to or further away from the conveying device. The second moving component is arranged on the first slider 15.

[0048] In this embodiment, the first slide rail 13 is provided so that the first slider 15 can move on the first slide rail 13. Therefore, the horizontal movement function of the first slider 15 drives the second moving component to move horizontally, thereby driving the positioning component 111 to move horizontally.

[0049] For example, in this embodiment, the first slider 15 can be close to the conveying device so that the subsequent positioning block can contact the valve stem 31 to achieve the positioning of the valve stem 31.

[0050] For example, in this embodiment, there are two first slide rails 13, which are symmetrically arranged on the mounting base, and each first slide rail 13 has a stop block 14 at both ends. The stop block 14 is mainly used to limit the first slider 15 and prevent the first slider 15 from falling off the first slide rail 13 in this embodiment.

[0051] It is worth noting that in this embodiment, the mounting frame 11 includes a mounting frame 11 and a fixing plate 12. The mounting frame 11 is used for positioning the entire device and the conveying device. The fixing plate 12 is then connected and fixed to the mounting frame 11. The first slide rail 13 is set on the fixing plate 12 and fixed with screws.

[0052] In an exemplary embodiment, a fixing frame 16 is provided between the first sliders 15, and the second moving component includes a second slide rail 17 and a mounting plate 19. The second slide rail 17 is symmetrically arranged on the fixing frame 16, and a second slider 18 is slidably connected to the second slide rail 17. The second slider 18 is capable of vertical movement. The mounting plate 19 is disposed between the second sliders 18, and the positioning member 111 is detachably connected to the mounting plate 19.

[0053] In this embodiment, the fixing frame 16 is mounted on two first sliders 15. The first sliders 15 can move the fixing frame 16 closer to or away from the conveying device. The second slider 18 on the fixing frame 16 can move the mounting plate 19 up and down. Therefore, the orientation of the positioning member 111 can be adjusted by the first and second moving components to achieve positioning of valve stems 31 of various types and sizes, thus improving the applicability of this application.

[0054] For example, in this embodiment, the second slide rail 17 is set vertically, and there are two of them, symmetrically arranged on the inner wall of the fixing frame 16. There are also two second sliders 18. The mounting plate 19 is connected to the second slider 18 with screws. When the second slider 18 moves vertically, it can drive the mounting plate 19 to move synchronously, thereby driving the positioning member 111 to move vertically, so as to position the valve stem 31.

[0055] For example, the mounting plate 19 is provided with a fastening assembly, which includes a positioning plate 1101 and a locking member 110. The locking member 110 can pass through the positioning member 111 and be threadedly connected to the mounting plate 19. The positioning plate 1101 is disposed on the locking member 110 and abuts against the positioning member 111. The positioning member 111 is provided with a positioning hole 112, which allows the valve stem 31 to enter for positioning. When the valve stem 31 can enter the positioning hole 112 completely and without resistance, it proves that the positioning of the valve stem 31 is complete and effective.

[0056] In one exemplary embodiment, the mounting bracket 16 is provided with a telescopic device 114, and the mounting plate 19 is provided with a connector 113. The output end of the telescopic device 114 is connected to the connector 113.

[0057] In this embodiment, the mounting plate 19 is supported by the telescopic device 114.

[0058] For example, in this embodiment, the telescopic device 114 adopts a spring balancer. The spring balancer makes the manually operated positioning mechanism 1 more convenient and timely in braking, and can easily align with the valve stem 31.

[0059] In an exemplary embodiment, after the positioning mechanism 1 completes the positioning of the valve stem 31, it is proven that the torque mechanism and the valve stem 31 can be accurately docked after the subsequent conveying device conveys the valve 3 to the corresponding position of the detection station. Therefore, after exiting the positioning mechanism 1, the limiting member is loosened manually so that the placement plate 28 can be lifted by the lifting mechanism in the detection station, which facilitates the detection of the valve stem 31.

[0060] In summary, the present invention, through the clamping mechanism 2 and the positioning mechanism 1, can quickly and accurately position the valve stem 31 of the valve 3 under manual operation, providing precise positioning for subsequent valve stem 31 testing, so as to facilitate the smooth progress of the testing work.

[0061] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A valve stem auxiliary positioning fixture for positioning the valve stem of a valve, characterized in that, The valve stem auxiliary positioning fixture includes: A clamping mechanism is provided, mounted on a conveyor device for transporting the clamping mechanism. The conveyor device includes a conveyor belt capable of driving the clamping mechanism into or out of the testing station. The clamping mechanism includes a base plate and clamping members mounted on the base plate. The valve is detachably connected to the base plate. The base plate is symmetrically provided with limiting blocks. The clamping members are disposed between the limiting blocks and slidably connected to them. Each clamping member has an adapter groove, wherein when the clamping members approach each other, the adapter grooves approach each other to clamp the valve. The limiting blocks are provided with... The clamping member has a limiting groove, and an adjusting member extending through the limiting groove is provided on the clamping member. The adjusting member is rotatably connected to the clamping member. The adjusting member includes a clamping part located within the limiting groove. The clamping part is an irregularly shaped part that can rotate to abut against the groove wall of the limiting groove. The clamping members are symmetrically arranged on the base plate and can move close to each other to clamp the valve. A placement plate is detachably connected to the base plate. The placement plate has multiple positioning grooves of different diameters. The positioning grooves can engage with the base of the valve to position the valve. The bottom of the placement plate is provided with a lifting hole, so that the placement plate can be lifted by the lifting mechanism in the detection station, so that the torque mechanism can detect the valve stem torque. A positioning mechanism is provided on one side of the conveying device. The positioning mechanism includes a mounting base, a first moving component, and a second moving component. The first moving component is mounted on the mounting base, and the second moving component is mounted on the first moving component. The second moving component has a positioning element with a positioning hole. The valve stem can enter the positioning hole for positioning. The first and second moving components can drive the positioning element closer to the valve stem to position the valve stem. After the valve is fixed by the clamping mechanism, the positioning mechanism can pre-position the valve stem before the valve enters the testing station to ensure that the valve stem can accurately align with the torque mechanism after entering the testing station, thus enabling torque detection of the valve stem. The first moving component includes a first slide rail and a stop block. The first slide rail is symmetrically arranged on the mounting base. The stop block is arranged on the mounting base and located at both ends of the first slide rail. A first slider is slidably connected to the first slide rail. The first slider can move closer to or further away from the conveying device. The second moving component is arranged on the first slider. A fixed frame is provided between the first sliders. The second moving component includes a second slide rail and a mounting plate. The second slide rail is symmetrically arranged on the fixed frame. The second slider is slidably connected to the second slide rail. The second slider can move vertically. The mounting plate is arranged between the second sliders. The positioning member is detachably connected to the mounting plate.

2. The valve stem auxiliary positioning fixture according to claim 1, characterized in that: The fixed frame is equipped with an expansion joint, and the mounting plate is equipped with a connector. The output end of the expansion joint is connected to the connector.

3. The valve stem auxiliary positioning fixture according to claim 1, characterized in that: The mounting plate is provided with a fastening assembly, which includes a positioning plate and a locking member. The locking member can pass through the positioning member and be threadedly connected to the mounting plate. The positioning plate is disposed on the locking member and abuts against the positioning member.

4. The valve stem auxiliary positioning fixture according to claim 1, characterized in that: The base plate is equipped with a handle, and multiple positioning sensors are symmetrically arranged on the base plate.

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