Pipe coupling welding fixture

Abstract

The utility model discloses a kind of pipeline connecting piece welding tool, it is related to pipeline connecting piece welding technical field, specifically a kind of pipeline connecting piece welding tool, including tool table, the inner side wall of tool table and inner bottom are all installed with clamp jaw, the inner wall of clamp jaw is installed with locking mechanism, locking mechanism includes arc plate, push block, sliding block and spring, arc plate is divided into two layers, through hole is opened in the arc plate of inner layer, push block is distributed in through hole and can move towards the direction of center, sliding slot is opened in the arc plate of inner layer, sliding slot is communicated through hole, sliding block is in sliding slot, the slope of both ends is consistent with the slope of the both sides of push block, one end of spring is fixed in the inner surface of outer layer arc plate, the other end is fixed in the surface of push block close to outer layer arc plate, by setting locking mechanism including push block, sliding block, spring and arc plate with spring pre-tightening force, self-adapting coating and flexible locking to three-way pipe outer surface during the process of clamp jaw clamping are realized.

Description

Technical Field

[0001] This utility model relates to the field of pipe connector welding technology, specifically a pipe connector welding fixture. Background Technology

[0002] Pipeline connector welding fixtures are positioning and clamping devices specifically designed for the welding process of connectors such as tees, elbows, and flanges in pipeline systems. They ensure that the workpieces maintain a precise spatial orientation and stable stress state during welding.

[0003] A search revealed a utility model patent with publication number "CN222511502U", which discloses a welding fixture for pipe connectors. By rotating a knob, a bidirectional lead screw is driven to rotate, causing the sliding plates to move towards each other and clamp the steel pipe. When the sliding plates move, they pull the connecting rod, causing the L-rod to slide downwards, so that the longitudinal clamp fits against the top of the arc positioning seat, thereby fixing the main pipe and branch pipe of the tee pipe.

[0004] The above-mentioned pipe fitting welding fixture has the following shortcomings: when fixing the tee pipe, it is necessary to rotate the adjustment mechanism, and each adjustment mechanism exists independently without any linkage mechanism between them. Therefore, the adjustment mechanism must be rotated one by one, which is cumbersome. For this reason, we have proposed a pipe fitting welding fixture. Utility Model Content

[0005] This utility model provides a welding fixture for pipe connectors, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a welding fixture for pipe connectors, including a fixture table, wherein the inner side wall and the inner bottom of the fixture table are equipped with clamps for clamping steel pipes, the clamps located on the inner side wall of the fixture table are arranged vertically, and the lower clamps are fixed to the inner side wall of the fixture table, the upper clamps can move vertically, and the clamps located at the inner bottom of the fixture table can move towards each other, characterized in that: the inner wall of the clamps is equipped with a locking mechanism for locking the pipe;

[0007] The locking mechanism includes an arc-shaped plate, push blocks, sliders, and springs. The arc-shaped plate is generally arc-shaped and divided into inner and outer layers. The inner arc-shaped plate has several through holes. Several push blocks are provided and distributed in the through holes and can move towards the center. The inner arc-shaped plate also has an arc-shaped groove that connects the through holes. The slider is located in the groove, and the slope of its two end faces is consistent with the slope of the push blocks on both sides. One end of the spring is fixed to the inner surface of the outer arc-shaped plate, and the other end is fixed to the surface of the push block near the outer arc-shaped plate.

[0008] Preferably, a rotating mechanism is provided on the side wall of the inner wall of the tooling table, the rotating mechanism including a rotating shaft, a first gear and a rotating rod;

[0009] The rotating shaft is arranged along the length of the tooling table, and the surface of the rotating shaft is provided with opposing threads;

[0010] The first gear is mounted at both ends of the rotating shaft;

[0011] One end of the rotating rod passes through the side wall of the tooling table and extends out, while the other end is fixedly installed at the center of one end of the first gear.

[0012] Preferably, a transmission mechanism is provided at both ends of the rotating shaft, and the first gear can drive the transmission mechanism to rotate when it rotates.

[0013] Preferably, the transmission mechanism includes a transmission shaft and a second gear;

[0014] The drive shaft is arranged along the height direction of the tooling table, and the surface of the drive shaft is threaded.

[0015] The second gear is mounted at the center of the end face of the lower end of the transmission shaft and meshes with the first gear.

[0016] Preferably, the gripper located on the inner wall of the tooling table has a sliding member connected to its end. The sliding member is slidably sleeved on the outer surface of the drive shaft, and the sliding member located below is fixed on the inner wall of the tooling table.

[0017] Preferably, the inner surface of the gripper is connected to the outer surface of the arc-shaped plate.

[0018] Preferably, the locking mechanism further includes a guide rod;

[0019] One end of the guide rod is located in the through hole, and the other end is fixedly installed on the inner surface of the outer arc plate.

[0020] Preferably, the arc radius of the gripper is less than that of a semicircle, and the grippers will leave a gap between each other when clamping the steel pipe.

[0021] This utility model has the following beneficial effects:

[0022] 1. This pipe connector welding fixture, by setting a locking mechanism with spring preload, includes a push block, a slider, a spring, and an arc plate. Under the meshing of the first gear and the second gear, the rotating mechanism can drive the transmission mechanism to operate together, synchronously realizing the self-adaptation of the steel pipe diameter and the clamping of the steel pipe, thus improving the operating efficiency.

[0023] 2. This pipe connector welding fixture, through a rotating rod driving a gear transmission mechanism and the meshing of the first and second gears, drives the threaded connection grippers to move in opposite directions, realizing the composite functions of precise positioning, stable clamping, and adaptive flexible locking of the tee pipe with a single point operation, thus improving reliability. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a top view of the structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the rotating mechanism of this utility model;

[0027] Figure 4 This is a schematic diagram of the locking mechanism of this utility model.

[0028] In the diagram: 1. Tooling table; 2. Gripper; 3. Locking mechanism; 31. Arc plate; 32. Push block; 33. Slider; 34. Spring; 35. Guide rod; 4. Rotation mechanism; 41. Rotation shaft; 42. First gear; 43. Rotation rod; 5. Transmission mechanism; 51. Transmission shaft; 52. Second gear; 6. Sliding component. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1 to 4 A welding fixture for pipe connectors includes a fixture table 1. The inner sidewall and bottom of the fixture table 1 are equipped with clamps 2 for clamping steel pipes. The clamps 2 located on the inner sidewall of the fixture table 1 are arranged vertically, with the lower clamps 2 fixed to the inner sidewall of the fixture table 1, the upper clamps 2 being movable vertically, and the clamps 2 located at the bottom of the fixture table 1 being movable towards each other. The fixture is characterized in that the inner wall of the clamps 2 is equipped with a locking mechanism 3 for locking the pipe.

[0031] The locking mechanism 3 includes an arc-shaped plate 31, push blocks 32, sliders 33, and springs 34. The arc-shaped plate 31 is generally arc-shaped and divided into inner and outer layers. The inner arc-shaped plate 31 has several through holes. Several push blocks 32 are provided and distributed in the through holes and can move towards the center. The inner arc-shaped plate 31 also has an arc-shaped groove that connects the through holes. The slider 33 is located in the groove, and the slope of its two end faces is consistent with the slope of the two sides of the push blocks 32. One end of the spring 34 is fixed to the inner surface of the outer arc-shaped plate 31, and the other end is fixed to the push block 34. 2. When the gripper 2 clamps the steel pipe, the pusher 32 in the middle is larger than the pushers 32 on both sides, so it will contact the steel pipe first. As the gripper 2 clamps the steel pipe, the force between the pusher 32 and the steel pipe gradually increases, causing the pusher 32 in the middle to move outward. During the movement, the slider 33 in the groove will be squeezed to both sides by the pusher 32 in the middle because the slope of its end face is consistent with the slope of the side wall of the pusher 32. This causes the pushers 32 on both sides to be squeezed towards the steel pipe. Under the action of the spring 34, the pusher 32 is pressed tightly against the outer surface of the steel pipe.

[0032] A rotating mechanism 414 is provided on the side wall of the inner wall of the tooling table 1. The rotating mechanism 414 includes a rotating shaft 41, a first gear 42, and a rotating rod 43. The rotating shaft 41 is arranged along the length direction of the tooling table 1. The surface of the rotating shaft 41 is provided with opposing threads. The first gear 42 is installed at both ends of the rotating shaft 41. One end of the rotating rod 43 passes through the side wall of the tooling table 1 and extends out. The other end is fixedly installed at the center of one end of the first gear 42. By rotating the end of the rotating rod 43 that extends out of the tooling table 1, it can drive the rotating shaft 41 and the first gear 42 to rotate.

[0033] The two ends of the rotating shaft 41 are provided with transmission mechanisms 5, and the first gear 42 can drive the transmission mechanisms 5 to rotate when it rotates.

[0034] The transmission mechanism 5 includes a transmission shaft 51 and a second gear 52. The transmission shaft 51 is arranged along the height direction of the tooling table 1, and the surface of the transmission shaft 51 is threaded. The second gear 52 is installed at the center of the end face of the lower end of the transmission shaft 51 and meshes with the first gear 42. The first gear 42 and the second gear 52 are a bevel gear system. The rotation of the first gear 42 along the length direction of the tooling table 1 will be converted into the rotation of the transmission shaft 51 along the height direction of the tooling table 1 by the second gear 52.

[0035] The gripper 2 located on the inner wall of the tooling table 1 has a sliding member 6 connected to its end. The sliding member 6 is slidably sleeved on the outer surface of the transmission shaft 51. The lower sliding member 6 is fixed on the inner wall of the tooling table 1. The inner surface of the gripper 2 is connected to the outer surface of the arc plate 31. When the transmission shaft 51 rotates, the upper sliding member 6 will drive the gripper 2 to move towards the lower gripper 2 along the thread direction and clamp the steel pipe.

[0036] The locking mechanism 3 also includes a guide rod 35, one end of which is disposed in the through hole and the other end is fixedly installed on the inner surface of the outer arc plate 31. The diameter of the guide rod 35 is equal to the diameter of the through hole, which restricts the movement direction of the push block 32.

[0037] The arc radius of the gripper 2 is smaller than that of a semicircle. When gripping the steel pipe, the gripper 2 will leave a gap between each other. When gripping a smaller diameter steel pipe, the gripper 2 can close more, and the contact point moves along the arc closer to the bottom of the arc. When gripping a larger diameter steel pipe, the gripper 2 does not need to be completely closed to contact the steel pipe, and the contact point is located at a higher position on the arc. Compared with the case of a semicircular gripper gripping a workpiece that is too small or too large, its stability is better.

[0038] In summary, when using this pipe connector welding fixture, the main pipe of the tee is placed on the lower jaw 2 located on the inner wall of the fixture table 1, and the branch pipe of the tee is placed downwards in the jaw 2 located at the bottom of the fixture table 1. By rotating the rotating rod 43, the rotating shaft 41 is rotated, and the meshing between the first gear 42 and the second gear 52 drives the transmission shaft 51 to rotate, causing the jaw 2, which is threaded to the outer surface of the rotating shaft 41 and the transmission shaft 51, to move and clamp the tee. During the clamping process, the steel pipe first contacts the push block 32 in the middle. At this time, the push block 32 in the middle begins to move outwards, and during the movement, it squeezes the slider 33, causing the push blocks 32 on both sides to be pressed towards the tee. Under the action of the spring 34, the push block 32 is pressed tightly against the outer surface of the steel pipe to complete the locking of the tee.

[0039] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. Moreover, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding fixture for pipe fittings, comprising a fixture table (1), wherein the inner wall and the bottom of the fixture table (1) are equipped with clamps (2) for clamping steel pipes, the clamps (2) located on the inner wall of the fixture table (1) are arranged vertically, and the lower clamps (2) are fixed to the inner wall of the fixture table (1), the upper clamps (2) are movable vertically, and the clamps (2) located at the bottom of the fixture table (1) are movable towards each other, characterized in that: The inner wall of the gripper (2) is equipped with a locking mechanism (3) that can lock the pipe. The locking mechanism (3) includes an arc plate (31), a push block (32), a slider (33), and a spring (34). The arc plate (31) is arc-shaped and divided into inner and outer layers. The inner arc plate (31) has several through holes. The push block (32) has several of them and is distributed in the through holes and can move towards the center. The inner arc plate (31) also has an arc-shaped groove that connects the through holes. The slider (33) is located in the groove and the slope of its two end faces is consistent with the slope of the push block (32) on both sides. One end of the spring (34) is fixed to the inner surface of the outer arc plate (31), and the other end is fixed to the surface of the push block (32) near the outer arc plate (31).

2. The welding fixture for pipe connectors according to claim 1, characterized in that: The tooling table (1) has a rotating mechanism on the inner wall of the side wall. The rotating mechanism includes a rotating shaft (41), a first gear (42), and a rotating rod (43). The rotating shaft (41) is arranged along the length of the tooling table (1), and the surface of the rotating shaft (41) is provided with opposing threads; The first gear (42) is mounted on both ends of the rotating shaft (41); One end of the rotating rod (43) passes through the side wall of the tooling table (1) and extends out, while the other end is fixedly installed at the center of one end of the first gear (42).

3. The welding fixture for pipe connectors according to claim 2, characterized in that: The rotating shaft (41) is provided with a transmission mechanism (5) at both ends. When the first gear (42) rotates, it can drive the transmission mechanism (5) to rotate.

4. The welding fixture for pipe connectors according to claim 3, characterized in that: The transmission mechanism (5) includes a transmission shaft (51) and a second gear (52); The drive shaft (51) is arranged along the height direction of the tooling table (1), and the surface of the drive shaft (51) is provided with threads; The second gear (52) is installed at the center of the end face of the lower end of the transmission shaft (51) and meshes with the first gear (42).

5. The welding fixture for pipe connectors according to claim 4, characterized in that: The gripper (2) located on the inner wall of the tooling table (1) has a sliding member (6) connected to its end. The sliding member (6) is slidably sleeved on the outer surface of the transmission shaft (51). The sliding member (6) located below is fixed on the inner wall of the tooling table (1).

6. The welding fixture for pipe connectors according to claim 5, characterized in that: The inner surface of the gripper (2) is connected to the outer surface of the arc plate (31).

7. The welding fixture for pipe connectors according to claim 6, characterized in that: The locking mechanism (3) also includes a guide rod (35); One end of the guide rod (35) is located in the through hole, and the other end is fixedly installed on the inner surface of the outer arc plate (31).

8. A welding fixture for pipe connectors according to claim 7, characterized in that: The arc radius of the gripper (2) is less than that of a semicircle, and there will be a gap between the grippers (2) when they clamp the steel pipe.

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