Positioning device for elbow assembly welding

Abstract

The utility model discloses a positioning device for elbow assembly welding. The positioning device comprises a base. The two flange positioning parts comprise supporting frames and flange positioning discs, the supporting frames are arranged on the base, the flange positioning discs are obliquely arranged on the supporting frames, each flange positioning disc is provided with at least two positioning pieces, and the positioning pieces are matched with the connecting holes; a positioning boss is arranged in the middle of the flange positioning disc and used for abutting against the end, inserted into the through hole, of the short straight pipe. The flange is positioned through the positioning piece, the height of the bottom end of the short straight pipe is positioned through the positioning boss, in this way, the relative position between the flange and the short straight pipe is stable, after an operator conducts spot welding positioning treatment on the flange and the short straight pipe, spot welding work is conducted on the connecting position of the bent pipe and the short straight pipe, and then the bent pipe and the short straight pipe are preliminarily connected; the relative position between the bent pipe and the short straight pipe is stable, subsequent welding work is facilitated, and the subsequent welding effect is effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning tooling, in particular to a positioning device for welding elbow components. Background Art

[0002] In the water supply pipeline system, elbows are indispensable accessories, especially in water supply equipment. Water supply pipelines use a large number of elbows of different specifications in order to avoid obstacles in the water supply pipeline or change the direction of water supply. Figure 1 As shown, the elbow is composed of an elbow 11 and a short straight pipe 12 connected to two ends of the elbow 11. In order to facilitate installation, maintenance and disassembly, flanges 13 are usually welded at both ends of the elbow, and the elbow and the flange 13 are welded to form an elbow assembly 1. In production, welders often use a ruler or a bend ruler and their own experience to visually ensure the relative position and direction of the elbow and the flange, so that the quality of the welded elbow assembly is uneven, the interchangeability is poor, and the production efficiency is low. Summary of the invention

[0003] The main purpose of the utility model is to provide a positioning device for welding elbow components, aiming to effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solutions of the utility model include:

[0005] The utility model discloses a positioning device for welding an elbow assembly, wherein the elbow assembly comprises an elbow, two flanges and two short straight pipes, one end of the short straight pipe is connected to the elbow, and the other end is connected to the flange; the flange has a plurality of connection holes for connecting to another flange, the middle part of the flange has a through hole, the short straight pipe is inserted into the through hole, and one end of the short straight pipe inserted into the through hole is located in the through hole. The positioning device for welding an elbow assembly comprises:

[0006] Base;

[0007] Two flange positioning parts, the flange positioning parts include a support frame and a flange positioning plate, the support frame is arranged on the base, the flange positioning plate is inclinedly arranged on the support frame, at least two positioning members are arranged on the flange positioning plate, and the positioning members match the connecting holes; the middle part of the flange positioning plate has a positioning boss, and the positioning boss is used to abut against one end of the short straight pipe inserted into the through hole;

[0008] Among them, after the flange is positioned on the flange positioning plate, the short straight tube is inserted into the through hole and abuts against the positioning boss, the two short straight tubes are in a state of inclination towards each other, and there is space between the two short straight tubes for placing the bent tube; when the bent tube is placed, the two ports of the bent tube are just aligned and abutted against the ports of the two short straight tubes.

[0009] Compared with the prior art, the utility model discloses a positioning device for elbow assembly welding, in which an operator places two flanges respectively on two inclined flange positioning plates, and uses positioning pieces to position the flanges, so that after the two short straight pipes are placed into the through holes of the flanges, the two short straight pipes are in an inclined state facing each other, and the bottom end height of the short straight pipes is positioned using the positioning bosses, so that the relative position between the flanges and the short straight pipes is stable, and the operator can first perform spot welding positioning processing on the flanges and the short straight pipes; then manually place the bent pipe between the two short straight pipes, so that the two ends of the bent pipe are respectively kept against the ends of the two short straight pipes, and finally spot welding is performed on the connection between the bent pipe and the short straight pipe, thereby making the bent pipe and the short straight pipe preliminarily connected, and the relative position between the bent pipe and the short straight pipe is stable, which is convenient for subsequent welding work and effectively guarantees the subsequent welding effect.

[0010] In a preferred embodiment, the side of the flange facing the flange positioning plate has a sealing surface; the side of the flange positioning plate facing the flange has an annular groove, and the annular groove is arranged around the positioning boss; after the flange is positioned, the sealing surface is located in the annular groove.

[0011] In a preferred embodiment, the top end of the annular groove has a first annular slope; the outer periphery of the sealing surface has a second annular slope; the first annular slope abuts against the second annular slope.

[0012] In a preferred embodiment, the angle between the flange positioning plate and the vertical direction line is 45°.

[0013] In a preferred embodiment, the positioning member is a screw rod, and after the flange is placed, a nut fastener is threadedly connected to the screw rod to fix the flange.

[0014] In a preferred embodiment, the positioning device for welding the elbow assembly also includes a fixing assembly, and the fixing assembly includes a stationary part and a movable part, the stationary part is located on the same side of the two flange positioning parts, and the movable part is located on the other side of the two flange positioning parts; after the short straight tube is placed on the positioning boss, the side of the short straight tube close to the stationary part is against the stationary part; before placing the elbow, the movable part is moved toward the direction of the flange positioning part so that the two short straight tubes are fixed under the clamping of the stationary part and the movable part.

[0015] In a preferred embodiment, the stationary part and the movable part are both arranged below the top end of the short straight tube.

[0016] In a preferred embodiment, a transmission screw is connected between the movable part and the stationary part, a nut for the transmission screw to rotate is provided on the stationary part, and the transmission screw is fixedly connected to the movable part.

[0017] In order to better understand and implement the present invention, the following figure is combined with the accompanying drawings to explain the present invention in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 This is the front view of the elbow assembly;

[0020] Figure 2 It is a three-dimensional structural diagram of a positioning device used for welding elbow components;

[0021] Figure 3 It is a three-dimensional structural diagram of the elbow assembly placed on the positioning device;

[0022] Figure 4 It is a cross-sectional structural diagram of the flange and the short straight pipe placed in the flange positioning part.

[0023] Description of reference numerals:

[0024] 1-elbow assembly, 11-elbow, 12-short straight pipe, 13-flange, 131-through hole, 133-sealing surface, 134-second ring slope, 2-positioning device, 21-base, 22-flange positioning part, 221-support frame, 222-flange positioning plate, 223-positioning member, 224-positioning boss, 225-ring groove, 226-first ring slope, 23-stationary member, 24-movable member, 25-drive screw, 26-nut. DETAILED DESCRIPTION

[0025] In order to better illustrate the present invention, the present invention is further described in detail below with reference to the accompanying drawings.

[0026] It should be clear that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the embodiments of the present application.

[0027] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms of "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0028] In addition, in the description of this application, unless otherwise specified, "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A-and / or B can mean: A exists alone, A- and B exist at the same time, and B- exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0029] refer to Figures 1 to 4 As shown, the utility model discloses a positioning device 2 for welding an elbow assembly 1, the elbow assembly 1 comprises an elbow 11, two flanges 13 and two short straight pipes 12, one end of the short straight pipe 12 is connected to the elbow 11, and the other end is connected to the flange 13; the flange 13 has a plurality of connection holes for connecting to another flange 13, the middle part of the flange 13 has a through hole 131, the short straight pipe 12 is inserted into the through hole 131, and one end of the short straight pipe 12 inserted into the through hole 131 is located in the through hole 131, the positioning device 2 for welding the elbow assembly 1 comprises:

[0030] Base 21;

[0031] Two flange positioning parts 22, the flange positioning part 22 includes a support frame 221 and a flange positioning plate 222, the support frame 221 is arranged on the base 21, the flange positioning plate 222 is tiltedly arranged on the support frame 221, and at least two positioning members 223 are arranged on the flange positioning plate 222, and the positioning members 223 match the connecting holes; the middle part of the flange positioning plate 222 has a positioning boss 224, and the positioning boss 224 is used to abut against one end of the short straight tube 12 inserted into the through hole 131;

[0032] Among them, after the flange 13 is positioned to the flange positioning plate 222, the short straight tube 12 is inserted into the through hole 131 and abuts against the positioning boss 224, the two short straight tubes 12 are in a state of inclination towards each other, and there is space between the two short straight tubes 12 for placing the bent tube 11; when the bent tube 11 is placed, the two ports of the bent tube 11 are just aligned and abutted with the ports of the two short straight tubes 12.

[0033] Compared with the prior art, the utility model discloses a positioning device 2 for welding an elbow assembly 1. An operator places two flanges 13 on two inclined flange positioning plates 222 respectively, and uses the positioning piece 223 to position the flange 13, so that after the two short straight pipes 12 are placed in the through holes 131 of the flange 13, the two short straight pipes 12 are in an inclined state facing each other, and the bottom end height of the short straight pipe 12 is positioned by using the positioning boss 224, so that the relative position between the flange 13 and the short straight pipe 12 is stable, and the operator can first perform spot welding positioning processing on the flange 13 and the short straight pipe 12; then manually place the elbow 11 between the two short straight pipes 12, so that the two ports of the elbow 11 are respectively kept against the ports of the two short straight pipes 12, and finally spot welding is performed on the connection between the elbow 11 and the short straight pipe 12, so that the elbow 11 and the short straight pipe 12 are initially connected, and the relative position between the elbow 11 and the short straight pipe 12 is stable, which is convenient for subsequent welding work and effectively guarantees the subsequent welding effect.

[0034] In this embodiment, the flange 13 has a sealing surface 133 on one side facing the flange positioning plate 222; the flange positioning plate 222 has an annular groove 225 on one side facing the flange 13, and the annular groove 225 is arranged around the positioning boss 224; after the flange 13 is positioned, the sealing surface 133 is located in the annular groove 225. The arrangement of the positioning boss 224, in addition to ensuring that the welding positions of the connecting pipe and the elbow 11 are adapted, can also ensure that the process distance between the end of the short straight pipe 12 and the sealing surface 133 meets the requirements, and the annular groove 225 is used to avoid the sealing surface 133 from being in the air.

[0035] Furthermore, the top of the annular groove 225 has a first annular bevel 226; the outer periphery of the sealing surface 133 has a second annular bevel 134; the first annular bevel 226 abuts against the second annular bevel 134. When the flange 13 is installed on the flange positioning plate 222, since the first annular bevel 226 abuts against the second annular bevel 134, the centerline symmetry axis of the positioning boss 224 located in the middle coincides with the central symmetry axis of the through hole 131, which plays a positioning role in the connection between the flange positioning plate 222 and the flange 13, avoiding the position deviation of the flange 13 due to installation error, effectively ensuring the accuracy of the positioning position of the short straight pipe 12, and further ensuring that when the elbow 11 is placed, the two ports of the elbow 11 can be aligned and abutted with the ports of the two short straight pipes 12 at the same time.

[0036] Preferably, the angle α between the flange positioning plate 222 and the vertical direction line A is 45°. The 45° inclined design and the use of the first ring bevel 226 and the second ring bevel 134 can make the flange 13 remain stationary on the flange positioning plate 222 and not easily fall off, making it convenient for the operator to fix the positioning piece 223. At the same time, it avoids the automatic deviation caused by the external welding force and the gravity of the flange 13 and the elbow 11 during welding, which affects the welding quality of the elbow assembly 1 and the relative position in three-dimensional space. The inclination angle of the flange positioning plate 222 will affect the inclination angle of the short straight pipe 12. When the angle α between the flange positioning plate 222 and the vertical direction line A is 45°, after the short straight pipe 12 is placed on the positioning boss 224, the angle between the short straight pipe 12 and the horizontal direction line B is also 45°. The 45° design allows the through hole 131 of the flange 13 to support the outer wall surface of the short straight pipe 12, so that the short straight pipe 12 can remain stationary on the flange 13 and is not easy to fall off.

[0037] It should be noted that the angle between the flange positioning plate 222 and the vertical direction line can be not only 45°, but also an angle close to 45°, such as 40°, 50°, etc., so that the flange 13 can be placed on the flange positioning plate 222 and the short straight pipe 12 can be placed on the flange 13.

[0038] In this embodiment, the positioning member 223 is a screw rod. After the flange 13 is placed, a nut fastener is threadedly connected to the screw rod to fix the flange 13.

[0039] In this embodiment, the positioning device 2 for welding the elbow assembly 1 also includes a fixing assembly, and the fixing assembly includes a stationary part 23 and a movable part 24, the stationary part 23 is located on the same side of the two flange positioning parts 22, and the movable part 24 is located on the other side of the two flange positioning parts 22; after the short straight tube 12 is placed on the positioning boss 224, the side of the short straight tube 12 close to the stationary part 23 is against the stationary part 23; before placing the elbow 11, the movable part 24 is moved toward the direction of the flange positioning part 22, so that the two short straight tubes 12 are fixed under the clamping of the stationary part 23 and the movable part 24. After the short straight tube 12 is fixed, it is difficult to move, which is more convenient for the operator to perform spot welding.

[0040] Furthermore, the stationary member 23 and the movable member 24 are both arranged below the top end of the short straight tube 12, thus freeing up space above the short straight tube 12 for operators to perform spot welding work.

[0041] Furthermore, a transmission screw 25 is connected between the movable part 24 and the stationary part 23, and a nut 26 for rotating the transmission screw 25 is provided on the stationary part 23. The transmission screw 25 is fixedly connected to the movable part 24, and the movable part 24 is driven to move forward and backward by rotating the transmission screw 25, thereby realizing the clamping, fixing and loosening of the short straight tube 12.

[0042] Preferably, the movable part 24 can be a strip plate or a round roller rod; the stationary part 23 can be a plate connected to the fixed parts in the positioning device 2, such as the base 21, the flange positioning plate 222, etc., or two spaced limit plates can be set on a plate, and the plate is connected to the base 21 and used as a lifting support member. The two limit plates are used to act on two different positions of the short straight tube 12 to limit the short straight tube 12.

[0043] The present invention is not limited to the above-mentioned embodiments. If various changes or modifications to the present invention do not depart from the spirit and scope of the present invention, and if these changes and modifications fall within the claims of the present invention and the scope of equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. A positioning device for welding an elbow assembly, the elbow assembly (1) comprising an elbow (11), two flanges (13) and two short straight pipes (12), one end of the short straight pipe (12) being connected to the elbow (11), and the other end being connected to the flange (13); the flange (13) having a plurality of connection holes for connecting to another flange (13); the middle of the flange (13) having a through hole (131), the short straight pipe (12) being inserted through the through hole (131), one end of the short straight pipe (12) being inserted through the through hole (131) being located in the through hole (131), characterized in that: The positioning device (2) for welding an elbow assembly (1) comprises: a base (21); Two flange positioning parts (22), the flange positioning parts (22) comprising a support frame (221) and a flange positioning plate (222), the support frame (221) being arranged on the base (21), the flange positioning plate (222) being arranged obliquely on the support frame (221), at least two positioning members (223) being arranged on the flange positioning plate (222), the positioning members (223) being matched with the connecting hole and being used for positioning the flange; a positioning boss (224) is provided in the middle of the flange positioning plate (222), the positioning boss (224) being used for abutting against one end of the short straight tube (12) inserted into the through hole (131); The end face extension line between the two flange positioning plates (222) is arranged in a V shape, and the V-shaped angle between the two flange positioning plates is the same as the angle between the two flange end faces; there is a space between the two short straight tubes (12) for placing the bent tube (11); the bent tube (11) has a placement position relative to the two short straight tubes (12), and when the bent tube (11) is in the placement position, the two ports of the bent tube (11) are aligned and abutted against the ports of the two short straight tubes (12).

2. The positioning device for elbow assembly welding according to claim 1, characterized in that: The flange (13) has a sealing surface (133) on a side facing the flange positioning plate (222); The flange positioning plate (222) has an annular groove (225) on the side facing the flange (13), and the annular groove (225) is arranged around the positioning boss (224); after the flange (13) is positioned, the sealing surface (133) is located in the annular groove (225).

3. The positioning device for elbow assembly welding according to claim 2, characterized in that: The top end of the annular groove (225) has a first annular slope (226); The outer periphery of the sealing surface (133) has a second annular slope (134); The first ring inclined surface (226) abuts against the second ring inclined surface (134).

4. The positioning device for elbow assembly welding according to claim 3, characterized in that: The angle between the flange positioning plate (222) and the vertical direction line is 45°.

5. The positioning device for welding an elbow assembly (1) according to claim 1, characterized in that: The positioning member (223) is a screw rod, and the screw rod is threadedly connected to a nut fastener.

6. The positioning device for elbow assembly welding according to claim 1, characterized in that: The positioning device (2) for welding an elbow assembly (1) further comprises a fixing assembly, wherein the fixing assembly comprises a stationary component (23) and a movable component (24), wherein the stationary component (23) is located on the same side of the two flange positioning parts (22), and the movable component (24) is located on the same other side of the two flange positioning parts (22); a transmission screw (25) is connected between the movable component (24) and the stationary component (23), and a nut (26) for rotating the transmission screw (25) is provided on the stationary component (23), and the transmission screw (25) is fixedly connected to the movable component (24).

7. The positioning device for elbow assembly welding according to claim 6, characterized in that: The stationary part (23) and the movable part (24) are both arranged below the top end of the short straight tube (12).

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