A PVC pipe welding device

Abstract

This invention discloses a PVC pipe welding device, belonging to the technical field of welding devices. It includes an operating table, with a welding mechanism fixedly installed at the top center of the operating table. Rotary clamping mechanisms are slidably installed on both sides of the welding mechanism. The welding mechanism includes a support rod, with a welding plate fixedly installed on the top of the support rod. A through hole is formed on the welding plate. A second cylinder is fixedly installed on one side of the welding plate, with its piston rod extending into the through hole and connecting to an extrusion roller. A third cylinder is fixedly installed on the top of the welding plate, with its piston rod extending into the welding plate and connecting to a welding torch. During the welding process, the rotating clamping mechanism is activated to rotate the PVC pipe for rotary welding, resulting in better welding effects. After welding is completed, the second cylinder can be activated to push the extrusion roller into contact with the welded pipe, thereby flattening the surface of the welded pipe and ensuring its overall aesthetic appearance.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and specifically to a PVC pipe welding device. Background Technology

[0002] A PVC pipe welding device is a pipe welding device used in the assembly process of PVC pipes to weld and reinforce two PVC pipes together, making the pipe connection operation more convenient.

[0003] CN102689122A discloses a large-diameter pipe welding apparatus. This invention provides a pipe welding back-gas protection device, which includes a back-gas carriage that moves synchronously with the welding torch. An inert gas box is installed on the back-gas carriage, and inert gas is delivered to the gas box through a gas pipe to achieve localized back-gas protection. Compared with the prior art, the pipe welding back-gas protection device of this invention can significantly reduce the gas filling time, greatly improve production efficiency, reduce the amount of inert gas used, and significantly lower costs.

[0004] However, the invention also has the following drawbacks: it lacks a rotating clamping mechanism, which means it is only suitable for welding pipes of a fixed size; secondly, after welding the ends of PVC pipes, there will be protrusions, making the overall appearance unsightly. Summary of the Invention

[0005] The purpose of this invention is to provide a PVC pipe welding device to solve the following technical problems: existing pipe welding devices do not have a rotating clamping mechanism, which means they are only suitable for welding pipes of a fixed size. In addition, after welding the ends of PVC pipes, there will be protrusions, which makes the overall appearance unsightly.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A PVC pipe welding device includes an operating table. A welding mechanism is fixedly installed at the top center of the operating table. Rotary clamping mechanisms are slidably installed on both sides of the welding mechanism. The welding mechanism includes a support rod. A welding plate is fixedly installed on the top of the support rod. A through hole is opened on the welding plate. A second cylinder is fixedly installed on one side of the welding plate. The piston rod of the second cylinder extends into the through hole and connects to an extrusion roller. A third cylinder is fixedly installed on the top of the welding plate. The piston rod of the third cylinder extends into the welding plate and connects to a welding torch.

[0008] As a further embodiment of the present invention: the rotating clamping mechanism includes a circular support plate, a circular rotating plate is connected to the inside of the circular support plate through a bearing, a driven wheel is sleeved on one end of the circular rotating plate, a clamping mechanism is installed inside the circular rotating plate, a motor mounting plate is fixedly installed at the bottom center of the circular support plate, a rotary motor is fixedly installed on the motor mounting plate, a driving wheel is fixedly installed on the output shaft of the rotary motor, and the driving wheel is connected to the driven wheel through a belt.

[0009] As a further embodiment of the present invention: the clamping mechanism includes three connecting plates that are installed at equal angles on both sides of a circular rotating plate, and a pin hole is provided at the inward end of the connecting plate, and a pin is installed in the pin hole.

[0010] Multiple inclined cylinders are movably connected to the inner wall of the circular rotating plate. A connecting shaft is provided between the piston rod ends of the cylinders. Triangular plates are installed at both ends of the connecting shaft. Multiple pin holes are opened at equal angles on the triangular plates. The pins pass through the pin holes and are movably connected to the rocker arms. A clamping roller is installed between the two rocker arms. A through hole is opened at the center of the triangular plate.

[0011] As a further aspect of the present invention, a support mechanism is provided on the outer side of both of the rotating clamping mechanisms.

[0012] As a further embodiment of the present invention: the support mechanism includes a vertically installed bracket, an adjusting bolt is provided inside the bracket, a horizontal plate is movably connected to the top of the adjusting bolt, and inclined support blocks are symmetrically installed on the horizontal plate. A V-shaped cover is movably connected to the bracket, a limit ball is installed at the center of the bottom of the V-shaped cover, and the V-shaped cover is connected to the bracket by a locking buckle.

[0013] As a further aspect of the present invention: auxiliary support plates are provided on the outer sides of both support mechanisms, a servo motor is fixedly installed on the top of the auxiliary support plate, a gear is fixedly installed on the output shaft of the servo motor, a support rod is slidably connected to the auxiliary support plate, and a notch is opened on one side of the support rod, on which a rack that cooperates with the gear is installed.

[0014] As a further embodiment of the present invention: a cylinder is fixedly installed at the top center of the operating table, the piston rod end of the cylinder is connected to the rotary clamping mechanism, slide rods are symmetrically installed on both sides of the cylinder, the slide rods are connected to the rotary clamping mechanism through a slider, and an opening is provided on the operating table for the rotary clamping mechanism to move.

[0015] The beneficial effects of this invention are:

[0016] During the welding process, the present invention activates the rotary clamping mechanism to drive the PVC pipe to rotate for rotary welding, resulting in better welding effect. After welding is completed, cylinder two can be activated to push the extrusion roller to contact the welded pipe, thereby flattening the surface of the welded pipe and ensuring its overall aesthetics.

[0017] This invention uses the cooperation of gears and racks to drive the support rod to move and insert it into the PVC pipe, supporting its inner wall and preventing it from rotating and deforming. At the same time, it supports the end welding area to ensure that the end does not deform during the welding process.

[0018] This invention, through the design of a rotating clamping mechanism, a supporting mechanism, and a welding mechanism, facilitates the welding of PVC pipes of different lengths and diameters, making it highly adaptable. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a frontal structural schematic diagram of the present invention;

[0021] Figure 2 This is a top view of the structure of the present invention;

[0022] Figure 3 This is a front view structural schematic diagram of the support mechanism of the present invention;

[0023] Figure 4 This is a side view of the rotating clamping mechanism of the present invention.

[0024] Figure 5 This is a side view of the clamping mechanism of the present invention.

[0025] Figure 6 This is a top view of the clamping mechanism of the present invention;

[0026] Figure 7 This is a side view of the support rod of the present invention;

[0027] Figure 8 This is a front view structural schematic diagram of the welding mechanism of the present invention.

[0028] In the diagram: 1. Operating table; 2. Rotary clamping mechanism; 3. Support mechanism; 4. Welding mechanism; 5. Auxiliary support plate; 11. Slide rod; 12. Cylinder 1; 21. Rotary motor; 22. Motor mounting plate; 23. Drive wheel; 24. Belt; 25. Clamping mechanism; 26. Circular support plate; 27. Driven wheel; 28. Circular rotating plate; 251. Connecting plate; 252. Pin; 253. Cylinder 4; 254. Pin hole 1; 2 55. Triangular plate; 256. Pin hole two; 257. Through hole; 258. Connecting shaft; 259. Clamping roller; 260. Rocker arm; 31. Bracket; 32. Adjusting bolt; 33. Support block; 34. V-shaped cover; 35. Limit ball; 36. Lock; 41. Support rod; 42. Welding plate; 43. Cylinder two; 44. Extrusion roller; 45. Welding gun; 46. Cylinder three; 51. Servo motor; 52. Support rod; 53. Rack. Detailed Implementation

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

[0030] Please see Figure 1-8 As shown, the present invention is a PVC pipe welding device, including an operating table 1. A welding mechanism 4 is fixedly installed at the top center of the operating table 1. Rotary clamping mechanisms 2 are slidably installed on both sides of the welding mechanism 4. By moving the two rotary clamping mechanisms 2 inward, the PVC pipes are joined together, which facilitates subsequent welding. The welding mechanism 4 includes a support rod 41. A welding plate 42 is fixedly installed on the top of the support rod 41. A through hole is opened on the welding plate 42. A cylinder 43 is fixedly installed on one side of the welding plate 42. The piston rod of the cylinder 43 extends into the through hole and connects to the extrusion roller 44. A cylinder 46 is fixedly installed on the top of the welding plate 42. The piston rod of the cylinder 46 extends into the welding plate 42 and connects to the welding torch 45. Place the welding rod between the two PVC pipes, then start cylinder three 46 to drive the welding gun 45 to descend. During the welding process, start the rotating clamping mechanism 2 to drive the PVC pipe to rotate and perform welding. After the welding is completed, start cylinder two 43 to push the extrusion roller 44 to contact the welded pipe, thereby flattening the surface of the welded pipe and ensuring its overall aesthetics.

[0031] The rotating clamping mechanism 2 includes a circular support plate 26. A circular rotating plate 28 is connected to the inside of the circular support plate 26 via a bearing. A driven wheel 27 is sleeved on one end of the circular rotating plate 28. A clamping mechanism 25 is installed inside the circular rotating plate 28. A motor mounting plate 22 is fixedly installed at the bottom center of the circular support plate 26. A rotary motor 21 is fixedly installed on the motor mounting plate 22. A drive wheel 23 is fixedly installed on the output shaft of the rotary motor 21. The drive wheel 23 is connected to the driven wheel 27 via a belt 24.

[0032] The clamping mechanism 25 includes three connecting plates 251 mounted at equal angles on both sides of a circular rotating plate 28. One end of each connecting plate 251 facing inwards has a pin hole 256, and a pin 252 is installed within the pin hole 256. Multiple inclined cylinders 253 are movably connected to the inner wall of the circular rotating plate 28. A connecting shaft 258 is provided between the piston rod ends of each cylinder 253. Triangular plates 255 are installed at both ends of the connecting shaft 258. Multiple pin holes 254 are opened at equal angles on the triangular plates 255. The pins 252 pass through the pin holes 254 and are movably connected to rocker arms 260. A clamping roller 259 is installed between two rocker arms 260. A through hole 257 is opened at the center of the triangular plates 255.

[0033] Insert the PVC pipe into the through hole 257, start the cylinder 253 to push the connecting shaft 258 to move, which in turn drives the triangular plate 255 to rotate, which in turn drives the rocker arm 260 to move through the pin 252, thereby clamping the PVC pipe through multiple clamping rollers 259, which is convenient for PVC pipes of different diameters. Then start the rotary motor 21 to drive the drive wheel 23 to rotate, which drives the driven wheel 27 to rotate, which in turn drives the circular rotating plate 28 to rotate, for rotary welding.

[0034] Both of the rotating clamping mechanisms 2 are equipped with support mechanisms 3 on their outer sides. Each support mechanism 3 includes a vertically mounted bracket 31. An adjusting bolt 32 is installed inside the bracket 31. A horizontal plate is movably connected to the top of the adjusting bolt 32. Inclined support blocks 33 are symmetrically mounted on the horizontal plate. A V-shaped cover 34 is movably connected to the bracket 31. A limiting ball 35 is installed at the center of the bottom of the V-shaped cover 34. The V-shaped cover 34 and the bracket 31 are connected by a locking buckle 36. A PVC pipe is placed on the support block 33, the V-shaped cover 34 is placed on top, and the locking buckle 36 is used to lock it. The limiting ball 35 limits the top of the PVC pipe, providing support and preventing deformation during the welding process. The adjusting bolt 32 can be adjusted to accommodate PVC pipes of different diameters as needed.

[0035] Auxiliary support plates 5 are provided on the outer sides of both support mechanisms 3. A servo motor 51 is fixedly installed on the top of the auxiliary support plate 5. A gear is fixedly installed on the output shaft of the servo motor 51. A support rod 52 is slidably connected to the auxiliary support plate 5. Multiple arc-shaped plates are connected to the outside of the support rod 52 through a telescopic rod. A notch is opened on one side of the support rod 52. A rack 53 that cooperates with the gear is installed on the notch. When the servo motor 51 is started, the support rod 52 is driven to move and be inserted into the PVC pipe through the cooperation of the gear and rack 53. The support rod 52 supports the inner wall of the PVC pipe to prevent it from rotating and deforming. At the same time, it supports the end welding part to ensure that the end does not deform during the welding process.

[0036] A cylinder 12 is fixedly installed at the top center of the operating table 1. The piston rod end of the cylinder 12 is connected to the rotary clamping mechanism 2. Slide rods 11 are symmetrically installed on both sides of the cylinder 12. The slide rods 11 are connected to the rotary clamping mechanism 2 through sliders. An opening is provided on the operating table 1 for the rotary clamping mechanism 2 to move, which facilitates driving the rotary clamping mechanism 2 to move and is suitable for welding PVC pipes of different lengths.

[0037] The working principle of this invention is as follows: One end of the PVC pipe is inserted into the through hole 257. The cylinder 253 is activated, pushing the connecting shaft 258 to move, which in turn drives the triangular plate 255 to rotate. This, in turn, drives the rocker arm 260 to move via the pin 252, thereby clamping the PVC pipe with multiple clamping rollers 259. The other end is placed on the support block 33, and the V-shaped cover 34 is placed on top and locked with the latch 36. The top is limited by the limiting ball 35, facilitating support for the PVC pipe and ensuring that it does not deform during the welding process. The cylinder 253... 2. Drive the rotary clamping mechanism 2 to move inward, the ends of the PVC pipes are joined together and positioned below the welding torch 45. Then, start the servo motor 51, which drives the support rod 52 to move and insert into the PVC pipes through the cooperation of gears and racks 53, supporting the inner wall of the pipes. Finally, start the rotary motor 21, which drives the drive wheel 23 to rotate. The drive wheel 23 drives the driven wheel 27 to rotate, which in turn drives the circular rotating plate 28 to rotate. At the same time, the robotic arm places the welding rod between the two PVC pipes and starts the cylinder 3 46 to drive the welding torch 45 to descend and perform rotary welding.

[0038] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A PVC pipe welding device, comprising an operating table (1), wherein a welding mechanism (4) is fixedly installed at the top center of the operating table (1), and rotating clamping mechanisms (2) are slidably installed on both sides of the welding mechanism (4), characterized in that, The welding mechanism (4) includes a support rod (41), a welding plate (42) is fixedly installed on the top of the support rod (41), a through hole is provided on the welding plate (42), a cylinder two (43) is fixedly installed on one side of the welding plate (42), the piston rod of the cylinder two (43) extends into the through hole and is connected to the extrusion roller (44), and a cylinder three (46) is fixedly installed on the top of the welding plate (42), the piston rod of the cylinder three (46) extends into the welding plate (42) and is connected to the welding gun (45); The rotating clamping mechanism (2) includes a circular support plate (26), and a circular rotating plate (28) is connected inside the circular support plate (26) via a bearing. A driven wheel (27) is sleeved on the outside of one end of the circular rotating plate (28), and a clamping mechanism (25) is installed inside the circular rotating plate (28). The clamping mechanism (25) includes three connecting plates (251) installed at equal angles on both sides of the circular rotating plate (28). The connecting plate (251) has a pin hole (256) at one end facing inward, and a pin (252) is installed in the pin hole (256). Multiple inclined cylinders (253) are movably connected to the inner wall of the circular rotating plate (28). A connecting shaft (258) is provided between the piston rod ends of the cylinders (253). Triangular plates (255) are installed at both ends of the connecting shaft (258). Multiple pin holes (254) are opened at equal angles on the triangular plates (255). The pins (252) pass through the pin holes (254) and are movably connected to the rocker arms (260). A clamping roller (259) is installed between the two rocker arms (260). A through hole (257) is opened at the center of the triangular plates (255).

2. The PVC pipe welding device according to claim 1, characterized in that, A motor mounting plate (22) is fixedly installed at the bottom center of the circular support plate (26). A rotary motor (21) is fixedly installed on the motor mounting plate (22). A drive wheel (23) is fixedly installed on the output shaft of the rotary motor (21). The drive wheel (23) is connected to the driven wheel (27) via a belt (24).

3. The PVC pipe welding device according to claim 1, characterized in that, A support mechanism (3) is provided on the outer side of each of the two rotary clamping mechanisms (2).

4. A PVC pipe welding device according to claim 3, characterized in that, The support mechanism (3) includes a vertically installed bracket (31), an adjusting bolt (32) is provided inside the bracket (31), a horizontal plate is movably connected to the top of the adjusting bolt (32), and inclined support blocks (33) are symmetrically installed on the horizontal plate. A V-shaped cover (34) is movably connected to the bracket (31), and a limit ball (35) is installed at the bottom center of the V-shaped cover (34). The V-shaped cover (34) and the bracket (31) are connected by a latch (36).

5. A PVC pipe welding device according to claim 3, characterized in that, Auxiliary support plates (5) are provided on the outer sides of both support mechanisms (3). A servo motor (51) is fixedly installed on the top of the auxiliary support plate (5). A gear is fixedly installed on the output shaft of the servo motor (51). A support rod (52) is slidably connected on the auxiliary support plate (5). A notch is opened on one side of the support rod (52), and a rack (53) that cooperates with the gear is installed on the notch.

6. The PVC pipe welding device according to claim 1, characterized in that, A cylinder (12) is fixedly installed at the top center of the operating table (1). The piston rod end of the cylinder (12) is connected to the rotary clamping mechanism (2). Slide rods (11) are symmetrically installed on both sides of the cylinder (12). The slide rods (11) are connected to the rotary clamping mechanism (2) through a slider. An opening for the rotary clamping mechanism (2) to move is provided on the operating table (1).

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