Sleeve welding positioning and correcting tool

Abstract

The utility model discloses a sleeve welding positioning and correcting tool, and relates to the field of tools for valve welding sleeves, the sleeve welding positioning and correcting tool comprises a bottom plate, two V-shaped positioning blocks and a pressing plate, the bottom plate comprises a left positioning correcting part, a valve body connecting part and a right positioning correcting part which are sequentially arranged from left to right, the two V-shaped positioning blocks are fixed to the top face of the left positioning correction part and the top face of the right positioning correction part respectively, the tops of the V-shaped positioning blocks are connected with a pressing plate through pressing plate studs and pressing plate nuts, a downward pressing operation area of the pressing plate right faces V-shaped notches of the V-shaped positioning blocks, and positioning pipes are fixed to the V-shaped notches through the pressing plate. The inner diameter of the positioning pipe is matched with the outer diameter of a sleeve to be welded, a bottom plate connecting through hole used for being connected with the valve body is formed in the middle of the valve body connecting part, and the valve body and the bottom plate are connected through a valve body connecting stud and a valve body connecting nut which are arranged at the position of the bottom plate connecting through hole. The problems that an existing sleeve is prone to deformation after being welded, cannot be corrected after deformation and needs to be reworked are solved.

Description

Technical Field

[0001] The utility model relates to the field of tooling for valve sleeve welding, in particular to a tooling for sleeve welding positioning and correction. Background Art

[0002] When welding sleeves to valves at the welding end, especially small-diameter valves, after welding the sleeves, if there is no tooling to fix them, the shrinkage of the welding will cause the sleeves at both ends of the valve to be misaligned and eccentric (in a V shape). In this way, when the valve with the sleeves welded arrives at the installation site, the sleeves cannot be aligned with the pipes at both ends of the site, which will affect the on-site welding construction. In serious cases, rework is required, and the rework can only be solved by cutting off the sleeves, reprocessing the welding grooves, and then re-welding the sleeves. This will delay a lot of rework time and increase a lot of rework costs. In order to solve the above problems, it is necessary to propose a tooling that can fix the sleeves during welding and correct the sleeves after problems occur. Utility Model Content

[0003] The purpose of the utility model is to provide a sleeve welding positioning and correction tool to solve the problem that the existing sleeve is easily deformed after welding and cannot be corrected after deformation and needs rework.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A sleeve welding positioning and correction tool, comprising a base plate, a V-shaped positioning block and a pressure plate, the base plate comprising a left positioning and correction part, a valve body connecting part and a right positioning and correction part arranged in sequence from left to right, the two V-shaped positioning blocks are respectively fixed on the top surface of the left positioning and correction part and the top surface of the right positioning and correction part, the top of the V-shaped positioning block is connected to the pressure plate through a pressure plate stud and a pressure plate nut, the downward pressing operation area of ​​the pressure plate is opposite to the V-shaped notch of the V-shaped positioning block, a positioning tube is fixed at the V-shaped notch through the pressure plate, the inner diameter of the positioning tube is adapted to the outer diameter of the sleeve to be welded, a base plate connecting through hole for connecting the valve body is opened in the middle of the valve body connecting part, the valve body and the base plate are connected by valve body connecting studs and valve body connecting nuts arranged at the base plate connecting through hole.

[0006] When in use, first fix the flange in the valve body upside down on the valve body connection part on the top surface of the base plate, and use the valve body connection studs and valve body connection nuts to position the valve body on the base plate. Then, after the sleeve is passed through the positioning tube, the groove of the sleeve is aligned with the groove of the valve body. Subsequently, the pressure plate studs and pressure plate nuts are used to control the pressure plate to press the positioning tube tightly and fix it in the V-shaped notch of the V-shaped positioning block. Then the valve body and the sleeve can be welded. If the sleeve of the valve welded is deformed, it can be corrected by this tooling. During correction, the welded valve is assembled onto the tooling, and the pressure plate studs and pressure plate nuts are used to make the pressure plate press the sleeve to correct the deformed sleeves at both ends of the valve.

[0007] As a further preferred embodiment of the present invention, the top surface of the valve body connecting portion is detachably connected to a pad via a detachable connecting structure, and a pad connecting through hole is provided at a position of the pad facing the bottom plate connecting through hole.

[0008] The positioning of valve bodies of different heights can be achieved by adding a backing plate between the valve body and the positioning plate, thereby making the adaptability of the tooling better.

[0009] As a further preference of the present invention, the detachable connection structure is a bolt connection structure.

[0010] As a further preferred embodiment of the present invention, there are two groups of pressure plate studs and pressure plate nuts for connecting the pressure plate at the top of the V-shaped positioning block, and the two groups of pressure plate studs and pressure plate nuts are respectively arranged on both sides of the V-shaped notch.

[0011] As a further preferred embodiment of the present invention, a slot is provided on the top of the positioning tube, and a block adapted to the slot is provided on the bottom of the pressure plate facing the slot.

[0012] The designed clamping block and clamping slot can clamp and limit the positioning tube, so that the positioning tube will not rotate or slide, and the stability is better, which makes it easier for the sleeve to be inserted into the positioning tube.

[0013] As a further preference of the present invention, the outer end of the positioning tube is further threadedly connected to a limiting sleeve, and the inner diameter of the limiting sleeve is adapted to the outer diameter of the sleeve to be welded.

[0014] When welding the sleeve, the sleeve may slide outward under the action of external force, which will affect the welding quality. In order to avoid this problem, a limit sleeve is provided at the outer end of the positioning tube. After the sleeve is installed, the limit sleeve can be installed to limit the sleeve, so that the sleeve will not slide outward during the welding process, thereby ensuring the welding quality. The limit sleeve can be removed for correction or when it is no longer needed because it is threadedly connected to the outer end of the positioning tube.

[0015] As a further preferred embodiment of the present invention, a transparent observation window is further provided on the side of the limiting sleeve.

[0016] It is convenient to visually see whether the outer end of the sleeve is against the limiting end of the inner cavity of the limiting sleeve.

[0017] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0018] 1. When in use, first fix the flange in the valve body upside down on the valve body connection part on the top surface of the base plate, and use the valve body connection studs and valve body connection nuts to position the valve body on the base plate. Then, after the sleeve is passed through the positioning tube, the groove of the sleeve is aligned with the groove of the valve body. Subsequently, the pressure plate studs and pressure plate nuts are used to control the pressure plate to press the positioning tube tightly and fix it in the V-shaped notch of the V-shaped positioning block. Then, the valve body and the sleeve can be welded. If the sleeve of the valve welded is deformed, it can be corrected by this tooling. During correction, the welded valve is assembled to the tooling. Through the action of the pressure plate studs and pressure plate nuts, the pressure plate can be pressed against the sleeve to correct the deformed sleeves at both ends of the valve.

[0019] 2. By using this device to weld the sleeve of the valve, welding deformation can be effectively controlled to prevent deformation of the sleeves at both ends of the valve after welding.

[0020] 3. The bottom plate connecting through holes can be multiple through holes of different sizes, so that different valve bodies can be positioned.

[0021] 4. By adding a pad between the valve body and the positioning plate, the positioning of valve bodies of different heights can be achieved, making the adaptability of the tooling better.

[0022] 5. The designed clamping block and slot can clamp and limit the positioning tube, so the positioning tube will not rotate or slide, which has better stability and makes it easier to insert the sleeve into the positioning tube.

[0023] 6. When welding the sleeve, the sleeve may slide outward under the action of external force, which will affect the welding quality. In order to avoid this problem, a limit sleeve is set at the outer end of the positioning tube. After the sleeve is installed, the limit sleeve can be installed to limit the sleeve, so that the sleeve will not slide outward during the welding process, thereby ensuring the welding quality. The limit sleeve can be removed when correcting or when it is not needed, because it is threadedly connected to the outer end of the positioning tube.

[0024] 7. It is easy to visually see whether the outer end of the sleeve is against the limiting end of the inner cavity of the limiting sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the utility model after the valve body and sleeve are assembled.

[0026] Figure 2 It is a structural schematic diagram of the bottom plate of the utility model.

[0027] Figure 3 It is a cross-sectional view between the pressure plate and the positioning tube.

[0028] 1-base plate, 11-left positioning correction part, 12-valve body connection part, 13-right positioning correction part, 2-V-shaped positioning block, 21-V-shaped notch, 3-pressure plate, 31-block, 4-pressure plate stud, 5-pressure plate nut, 6-positioning tube, 61-slot, 62-limiting sleeve, 7-sleeve to be welded, 8-valve body, 9-valve body connection stud, 10-valve body connection nut. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0033] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is typically placed when in use, or are the orientations or positional relationships commonly understood by those skilled in the art. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0035] Specific embodiment 1: Figure 1 、 Figure 2 、 Figure 3 A sleeve welding positioning and correction tool is shown, including a base plate 1, a V-shaped positioning block 2 and a pressure plate 3. The base plate 1 includes a left positioning and correction part 11, a valve body connecting part 12 and a right positioning and correction part 13 arranged in sequence from left to right. There are two V-shaped positioning blocks 2, and the two V-shaped positioning blocks 2 are respectively fixed on the top surface of the left positioning and correction part 11 and the top surface of the right positioning and correction part 13. The top of the V-shaped positioning block 2 is connected to the pressure plate 3 through a pressure plate stud 4 and a pressure plate nut 5. The downward pressing operation area of ​​the pressure plate 3 is opposite to the V-shaped notch 21 of the V-shaped positioning block 2. A positioning tube 6 is fixed at the V-shaped notch 21 through the pressure plate 3. The inner diameter of the positioning tube 6 is adapted to the outer diameter of the sleeve 7 to be welded. A base plate connecting through hole for connecting the valve body 8 is opened in the middle of the valve body connecting part 12. The valve body 8 and the base plate 1 are connected through the valve body connecting stud 9 and the valve body connecting nut 10 arranged at the base plate connecting through hole.

[0036] When in use, first fix the flange in the valve body upside down on the valve body connection part on the top surface of the base plate, and use the valve body connection studs and valve body connection nuts to position the valve body on the base plate. Then, after the sleeve is passed through the positioning tube, the groove of the sleeve is aligned with the groove of the valve body. Subsequently, the pressure plate studs and pressure plate nuts are used to control the pressure plate to press the positioning tube tightly and fix it in the V-shaped notch of the V-shaped positioning block. Then the valve body and the sleeve can be welded. If the sleeve of the valve welded is deformed, it can be corrected by this tooling. During correction, the welded valve is assembled onto the tooling, and the pressure plate studs and pressure plate nuts are used to make the pressure plate press the sleeve to correct the deformed sleeves at both ends of the valve.

[0037] Specific embodiment 2: This embodiment further explains the valve body connection part 12 based on specific embodiment 1. The top surface of the valve body connection part 12 is detachably connected to a pad through a detachable connection structure, and a pad connection through hole is provided at a position of the pad facing the bottom plate connection through hole.

[0038] The positioning of valve bodies of different heights can be achieved by adding a backing plate between the valve body and the positioning plate, thereby making the adaptability of the tooling better.

[0039] Specific embodiment 3: This embodiment further illustrates the detachable connection structure based on specific embodiment 2. The detachable connection structure is a bolt connection structure.

[0040] Specific embodiment 4: This embodiment further explains the V-shaped positioning block based on specific embodiment 1. There are two groups of pressure plate studs 4 and pressure plate nuts 5 on the top of the V-shaped positioning block 2 for connecting the pressure plate 3. The two groups of pressure plate studs 4 and pressure plate nuts 5 are respectively arranged on both sides of the V-shaped notch 21.

[0041] Specific embodiment 5: This embodiment further explains the positioning tube 6 based on specific embodiment 1. A slot 61 is provided on the top of the positioning tube 6, and a block 31 adapted to the slot is provided on the bottom of the pressure plate 3 facing the slot 61.

[0042] The designed clamping block and clamping slot can clamp and limit the positioning tube, so that the positioning tube will not rotate or slide, and the stability is better, which makes it easier for the sleeve to be inserted into the positioning tube.

[0043] Specific embodiment 6: This embodiment further illustrates the positioning tube 6 based on specific embodiment 1. The outer end of the positioning tube 6 is also threadedly connected to a limiting sleeve 62, and the inner diameter of the limiting sleeve 62 is adapted to the outer diameter of the sleeve 7 to be welded.

[0044] When welding the sleeve, the sleeve may slide outward under the action of external force, which will affect the welding quality. In order to avoid this problem, a limit sleeve is provided at the outer end of the positioning tube. After the sleeve is installed, the limit sleeve can be installed to limit the sleeve, so that the sleeve will not slide outward during the welding process, thereby ensuring the welding quality. The limit sleeve can be removed for correction or when it is no longer needed because it is threadedly connected to the outer end of the positioning tube.

[0045] Specific embodiment 7: This embodiment further illustrates the limiting sleeve 62 based on specific embodiment 6. A transparent observation window is further provided on the side of the limiting sleeve 62.

[0046] It is convenient to visually see whether the outer end of the sleeve is against the limiting end of the inner cavity of the limiting sleeve.

[0047] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sleeve welding positioning and correction tool, characterized by: The invention comprises a bottom plate (1), a V-shaped positioning block (2) and a pressure plate (3), wherein the bottom plate (1) comprises a left positioning correction part (11), a valve body connecting part (12) and a right positioning correction part (13) arranged in sequence from left to right, and the two V-shaped positioning blocks (2) are respectively fixed on the top surface of the left positioning correction part (11) and the top surface of the right positioning correction part (13), and the top of the V-shaped positioning block (2) is connected to the pressure plate (3) through a pressure plate stud (4) and a pressure plate nut (5). The pressing operation area of ​​the pressure plate (3) is opposite to the V-shaped notch (21) of the V-shaped positioning block (2), and a positioning tube (6) is fixed at the V-shaped notch (21) through the pressure plate (3). The inner diameter of the positioning tube (6) is adapted to the outer diameter of the sleeve (7) to be welded, and a bottom plate connecting through hole for connecting the valve body (8) is provided in the middle of the valve body connecting portion (12). The valve body (8) and the bottom plate (1) are connected via a valve body connecting stud (9) and a valve body connecting nut (10) provided at the bottom plate connecting through hole.

2. The sleeve welding positioning and correction tool according to claim 1, characterized in that: The top surface of the valve body connecting portion (12) is detachably connected to a backing plate via a detachable connecting structure, and a backing plate connecting through hole is provided at a position of the backing plate facing the bottom plate connecting through hole.

3. The sleeve welding positioning and correction tool according to claim 2, characterized in that: The detachable connection structure is a bolt connection structure.

4. The sleeve welding positioning and correction tool according to claim 1, characterized in that: The top of the V-shaped positioning block (2) is provided with two groups of pressure plate studs (4) and pressure plate nuts (5) for connecting the pressure plate (3). The two groups of pressure plate studs (4) and pressure plate nuts (5) are respectively arranged on both sides of the V-shaped notch (21).

5. The sleeve welding positioning and correction tool according to claim 1, characterized in that: A slot (61) is provided on the top of the positioning tube (6), and a block (31) adapted to the slot is provided on the bottom of the pressing plate (3) facing the slot (61).

6. The sleeve welding positioning and correction tool according to claim 1, characterized in that: The outer end of the positioning tube (6) is also threadedly connected to a limiting sleeve (62), and the inner diameter of the limiting sleeve (62) is adapted to the outer diameter of the sleeve (7) to be welded.

7. The sleeve welding positioning and correction tool according to claim 6, characterized in that: A transparent observation window is also provided on the side of the limiting sleeve (62).

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