Pipe welding clamping tool

Abstract

The utility model discloses a kind of clamping tool for pipe welding, including bottom plate, fixed clamping assembly and movable clamping assembly are equipped on bottom plate;The fixed clamping assembly includes a workbench, and first clamping assembly is equipped on workbench;The movable clamping assembly includes a movable table and the driving mechanism of driving movable table rotation, and movable table is rotatably connected with workbench by pivot;Second clamping assembly is equipped on movable table, and first clamping assembly and second clamping assembly all include a long strip support seat, and semicylindrical support groove is equipped in support seat, and at least one group of clamping block is equipped in support seat side face, and arc clamping arm is equipped on clamping block.The utility model utilizes the flexible rotation of driving mechanism to realize movable table, realize the angle adjustment of movable table and workbench, satisfy the welding demand of different angle, and the angle display board on workbench, improve the accuracy and reliability of welding angle.

Description

Technical Field

[0001] This utility model relates to the field of pipe welding technology, and in particular to a clamping fixture for pipe welding. Background Technology

[0002] Traditional clamping fixtures have several shortcomings in pipe welding operations. Most fixtures struggle to flexibly adjust the welding angle of the pipe fittings. When welding non-right-angle pipe fittings, manual support is often required to fix the angle, which is not only cumbersome but also prone to causing the welding position to shift due to unstable support, affecting welding accuracy. Furthermore, operators often struggle to accurately control the rotation angle of the pipe fittings, relying solely on experience, further reducing the stability of welding quality.

[0003] In addition, the existing clamping components have poor adaptability to pipe fittings of different specifications, the position adjustment of the clamping blocks is not convenient enough, and the clamping force is difficult to control. This can easily lead to situations where the pipe fittings are clamped too loosely, causing them to shake during welding, or clamped too tightly, causing damage to the surface of the pipe fittings. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a clamping fixture for pipe welding, which can perform welding at different angles for pipes of different specifications.

[0005] Therefore, the technical solution of this utility model is: a clamping fixture for pipe welding, including a base plate, on which a fixed clamping assembly and a movable clamping assembly are provided; the fixed clamping assembly includes a worktable, on which a first clamping assembly is provided; the movable clamping assembly includes a movable table and a driving mechanism for rotating the movable table, and the movable table and the worktable are rotatably connected by a rotating shaft; the movable table is provided with a second clamping assembly, and both the first clamping assembly and the second clamping assembly include a long strip-shaped support base, in which a semi-cylindrical support groove is provided, and at least one set of clamping blocks are provided on the side of the support base, with arc-shaped clamping arms on the clamping blocks.

[0006] Based on the above scheme and as a preferred embodiment of the above scheme: the driving mechanism includes a fixed plate, a support rod, a movable block, a first lead screw, and a first adjusting handle; the first lead screw is rotatably mounted on the fixed plate, the movable block is threadedly engaged with the first lead screw, and the two ends of the support rod are rotatably connected to the movable block and the movable table, respectively.

[0007] Based on the above scheme and as a preferred embodiment of the above scheme: the front end of the clamping arm is a clamping part, and a rubber pad is provided inside the clamping part; the middle of the clamping arm is rotatably mounted on the clamping block, and a retractable push rod is provided between the tail of the clamping arm and the clamping block. The push rod drives the tail of the clamping arm to move upward, so that the clamping part is in a clamping state; a tension spring is also provided between the tail of the clamping arm and the clamping block.

[0008] Based on the above scheme and as a preferred embodiment of the above scheme: the push rod is mounted on the cylinder, the cylinder is fixed on the clamping block, and the top of the push rod abuts against the lower part of the clamping arm.

[0009] Based on the above scheme and as a preferred embodiment of the above scheme: the support base is provided with 2 to 3 sets of clamping blocks along its length, and the clamping block closest to the worktable is a fixed clamping block, while the remaining clamping blocks are movable clamping blocks; the support base is provided with a long slot, and the fixed clamping block is installed on the long slot of the support base by bolts.

[0010] Based on the above scheme and as a preferred embodiment of the above scheme: a second lead screw is provided on the side of the support base, and a second adjusting handle is provided at the end of the second lead screw. The movable clamping block is threadedly engaged with the second lead screw; the second adjusting handle drives the second lead screw to rotate, and the second lead screw drives the movable clamping block to move along the length direction of the support base.

[0011] Based on the above scheme and as a preferred embodiment of the above scheme: an angle display panel is provided on the side of the junction between the worktable and the movable table, and the center of the angle display panel is located on the axis of the rotating shaft.

[0012] Based on the above scheme and as a preferred embodiment of the above scheme: the support groove is provided with an anti-slip rubber pad.

[0013] Compared with the prior art, the beneficial effects of this utility model are: The drive mechanism allows for flexible rotation of the movable table, enabling angle adjustment between the movable table and the worktable to meet welding requirements at different angles. The angle display panel on the worktable improves the accuracy and reliability of the welding angle. Support grooves with anti-slip pads on the support base increase friction between the pipe and the support base, preventing slippage. Fixed and movable clamping blocks on the support base accommodate pipes of different lengths and diameters, enhancing the fixture's versatility. Furthermore, the clamping arm is hinged to the clamping block and equipped with a pneumatic push rod. This pneumatic push rod changes the state of the clamping arm, creating a stable preload on the pipe and ensuring secure clamping. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side view of the structure of this utility model (initial state); Figure 3 This is a side view of the structure of this utility model (in a bent state). Figure 4 This is a schematic diagram of the structure of the first clamping component of this utility model; Figure 5 This is a schematic diagram of the clamping state of the clamping arm of this utility model; Figure 6 This is a schematic diagram of the open state of the clamping arm of this utility model; Figure 7 This is a schematic diagram of the structure of the clamping block of this utility model.

[0015] The components are labeled as follows: base plate 1, fixed clamping assembly 2, worktable 21, movable clamping assembly 3, movable table 31, fixed plate 32, support rod 33, movable block 34, first lead screw 35, first adjusting handle 36, first clamping assembly 4, support base 41, support groove 42, anti-slip pad 43, fixed clamping block 44, movable clamping block 45, second lead screw 46, second adjusting handle 47, clamping base 48, clamping arm 49, clamping arm tail 410, top rod 411, cylinder 412, tension spring 413, clamping part 414, angle display plate 5, and second clamping assembly 6. Detailed Implementation

[0016] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. They should not be construed as limiting the specific protection scope of this utility model.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0018] See the attached drawings. The clamping fixture for welding pipe fittings described in this embodiment includes a base plate 1, on which a fixed clamping assembly 2 and a movable clamping assembly 3 are provided; the fixed clamping assembly 2 includes a worktable 21, which is fixed on the base plate 1; the worktable 21 is provided with a first clamping assembly 4 for clamping the pipe fittings.

[0019] The movable clamping assembly 3 includes a movable platform 31 and a drive mechanism for rotating the movable platform 31. The movable platform 31 is rotatably connected to the worktable 21 via a rotating shaft. An angle display plate 5 is provided on the side of the junction between the worktable 21 and the movable platform 31, and the center of the angle display plate 5 is located on the axis of the rotating shaft. The angle display plate 5 has a semi-circular structure and a reading of 0~180° is provided on its top.

[0020] The driving mechanism includes a fixed plate 32, a support rod 33, a movable block 34, a first lead screw 35, and a first adjusting handle 36. The fixed plate 32 is fixed on the base plate 1, the first lead screw 35 is rotatably mounted on the fixed plate 32, the movable block 34 is provided with a threaded hole that is threadedly engaged with the first lead screw 35, and the two ends of the support rod 33 are rotatably connected to the movable block 34 and the movable table 31, respectively.

[0021] In use, turn the first adjustment handle 36, which drives the first lead screw 35 to rotate. The rotation of the first lead screw 35 will drive the movable block 34 to move. During the movement of the movable block 34, it will drive the support rod 33 to rotate, thereby making the movable table 31 rotate relative to the worktable 21. During the rotation, the tilt angle can be read from the angle display panel 5, which achieves the effect of precise adjustment.

[0022] The movable table 31 is equipped with a second clamping assembly 6. The first clamping assembly 4 has the same structure as the second clamping assembly 6. Taking the structure of the first clamping assembly 4 as an example, the first clamping assembly 4 includes a long strip-shaped support base 41. The support base 41 has a semi-cylindrical support groove 42 inside, and the support groove 42 has an anti-slip rubber pad 43 inside. The support base 41 has 2 to 3 sets of clamping blocks along its length, and the clamping block closest to the worktable is a fixed clamping block 44, while the remaining clamping blocks are movable clamping blocks 45. The support base 41 has a long slot, and the fixed clamping block 44 is installed on the long slot of the support base 41 by bolts.

[0023] The support base 41 is provided with a second lead screw 46 on its side, and a second adjusting handle 47 is provided at the end of the second lead screw 46; the movable clamping block 45 is threadedly engaged with the second lead screw 46; the second adjusting handle 47 drives the second lead screw 46 to rotate, and the second lead screw 46 drives the movable clamping block 45 to move along the length direction of the support base 41.

[0024] The clamping block includes a clamping base 48 and an arc-shaped clamping arm 49. The front end of the clamping arm 49 is a clamping part 414, and a rubber gasket is provided inside the clamping part. The clamping arm 49 is rotatably mounted on the clamping base 48 in the middle. A telescopic push rod 411 is provided between the tail end 410 of the clamping arm and the clamping base 48. The push rod 411 is mounted on a cylinder 412, which is fixed to the clamping base 48. The top of the push rod 411 abuts against the bottom of the tail end 410 of the clamping arm. The push rod 411 drives the tail end 410 of the clamping arm to move upward, so that the clamping part is in a clamping state. A tension spring 413 is also provided between the tail end 410 of the clamping arm and the clamping base 48, which can provide tension to the clamping arm. The clamping part at the front end of the clamping arm and the tail end of the clamping arm are in a lever shape.

[0025] When the cylinder 412 is not vented, the push rod 411 is in its lowest position. Under the action of the tension spring 413, the tail of the clamping arm 410 swings downward, and the clamping part 414 at the front end of the clamping arm is in the open state. When the cylinder 412 is vented, the push rod 411 rises and pushes the tail of the clamping arm 410 upward, thereby causing the clamping part 414 at the front end of the clamping arm to close downward, forming a stable clamping state with the support groove. When the cylinder 412 stops venting, under the action of the tension spring 413, the tail of the clamping arm 410 swings downward, thereby pushing the push rod 411 downward, and the clamping part 414 at the front end of the clamping arm opens, making it convenient for the user to pick up and put down the pipe fittings.

[0026] The steps for using the fixture are as follows: Check that all parts of the clamping fixture are intact, and ensure that the adjustment mechanisms such as the first lead screw 35 and the second lead screw 46 operate smoothly and that the angle display panel is clearly readable.

[0027] The two pipe fittings to be welded are placed in the support grooves of the first clamping assembly 4 and the second clamping assembly 6 respectively, so that the welding ends of the pipe fittings are aligned. Adjust the position of the clamping block according to the length of the two pipe fittings to be welded. At this time, the clamping arm is in the open state. First, ensure that the position of the fixed clamping block 44 is appropriate. If adjustment is required, the bolt can be loosened, the position can be finely adjusted on the long slot hole, and then it can be re-fixed. For the movable clamping block 45, turn the second adjusting handle 47 so that the second lead screw 46 drives the movable clamping block 45 to move to the appropriate position.

[0028] The cylinder 412 is activated, which drives the push rod 411 to extend, thereby causing the clamping part 414 at the front end of the clamping arm to close and make close contact with the pipe fitting, thus achieving a stable clamping. According to the welding requirements, turn the first adjusting handle 36 to rotate the first lead screw 35, which drives the movable block 34 to move along the first lead screw 35, and then pushes the movable table 31 to rotate through the support rod 33. After adjusting the movable table 31 to the required angle by observing the angle display plate 5, stop turning the first adjusting handle 36.

[0029] Once the pipe fittings are securely clamped and the angle is accurately adjusted, welding can proceed. Disconnect the air supply to cylinder 412 of the clamping assembly, and tension spring 413 can drive clamp arm 49 to open, remove the pipe from support groove 42, and finally clean the tooling for the next use.

[0030] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A clamping fixture for welding pipe fittings, comprising a base plate, characterized in that: The base plate is provided with a fixed clamping assembly and a movable clamping assembly; the fixed clamping assembly includes a worktable, on which a first clamping assembly is provided; the movable clamping assembly includes a movable table and a drive mechanism for rotating the movable table, and the movable table and the worktable are rotatably connected by a rotating shaft; the movable table is provided with a second clamping assembly, and both the first clamping assembly and the second clamping assembly include a long strip-shaped support base, the support base is provided with a semi-cylindrical support groove, and the side of the support base is provided with at least one set of clamping blocks, and the clamping blocks are provided with arc-shaped clamping arms.

2. The clamping fixture for pipe welding as described in claim 1, characterized in that: The driving mechanism includes a fixed plate, a support rod, a movable block, a first lead screw, and a first adjusting handle; the first lead screw is rotatably mounted on the fixed plate, the movable block is threadedly engaged with the first lead screw, and the two ends of the support rod are rotatably connected to the movable block and the movable table, respectively.

3. The clamping fixture for pipe welding as described in claim 1, characterized in that: The front end of the clamping arm is a clamping part, and a rubber pad is provided inside the clamping part; the middle of the clamping arm is rotatably mounted on the clamping block, and a telescopic push rod is provided between the tail of the clamping arm and the clamping block. The push rod drives the tail of the clamping arm to move upward, so that the clamping part is in a clamping state; a tension spring is also provided between the tail of the clamping arm and the clamping block.

4. The clamping fixture for pipe welding as described in claim 3, characterized in that: The push rod is mounted on the cylinder, which is fixed to the clamping block, and the top of the push rod abuts against the lower part of the clamping arm.

5. The clamping fixture for pipe welding as described in claim 1, characterized in that: The support base has 2 to 3 sets of clamping blocks along its length, with the clamping block closest to the worktable being a fixed clamping block and the remaining clamping blocks being movable clamping blocks; the support base has a long slot, and the fixed clamping block is installed on the long slot of the support base by bolts.

6. The clamping fixture for welding pipe fittings as described in claim 5, characterized in that: The support base is provided with a second lead screw on its side, and a second adjusting handle is provided at the end of the second lead screw. The movable clamping block is threadedly engaged with the second lead screw. The second adjusting handle drives the second lead screw to rotate, and the second lead screw drives the movable clamping block to move along the length direction of the support base.

7. The clamping fixture for pipe welding as described in claim 1, characterized in that: An angle display panel is provided on the side of the junction between the workbench and the movable platform, and the center of the angle display panel is located on the axis of the rotating shaft.

8. The clamping fixture for pipe welding as described in claim 1, characterized in that: The support groove is equipped with an anti-slip rubber pad.

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