Water pipe positioning structure for double-gun water pipe welding machine

Abstract

The utility model discloses a water pipe positioning structure for a double-gun water pipe welding machine, and belongs to the technical field of water pipe positioning structures. In order to solve the problem that an existing product is complex in structure, according to the technical scheme, the positioning device comprises a driving air cylinder, a positioning mechanism is arranged on the driving air cylinder, and the positioning mechanism comprises a connecting disc fixedly connected to the movable end of the driving air cylinder. By arranging the positioning mechanism, the positioning mechanism stretches out through the air cylinder during use, when the positioning mechanism stretches into the water pipe, a positioning pin is completely inserted into the water pipe through an opening structure, accurate positioning is achieved, accuracy and stability of annular welding are guaranteed, the annular welding device is suitable for full-automatic welding at present, great convenience is achieved, welding efficiency can be improved to a great extent, and labor intensity of workers is lowered. And secondly, by arranging a pressure sensor, the extrusion force between the positioning pin and the water pipe can be monitored in real time, the working state of the driving air cylinder is adjusted through a PLC, and the situation that fixing of the water pipe is affected due to the fact that the extrusion force is large or small is avoided.

Description

A water pipe positioning structure for a dual-gun water pipe welding machine Technical Field

[0001] This utility model relates to the technical field of water pipe positioning structure, specifically a water pipe positioning structure for a dual-gun water pipe welding machine. Background Technology

[0002] Water pipes are pipes that supply water. In modern decoration, the main construction method is wall embedding. Depending on the material, water pipes are mainly divided into metal pipes, plastic-coated metal pipes, and plastic pipes. In order to ensure that water pipes are suitable for different usage environments, they are usually welded before use. During the welding process, in order to ensure that the position of the water pipe does not shift, a positioning structure is needed to position it.

[0003] Existing positioning structures for water pipes are all placed manually, which is not suitable for modern automated welding, indirectly affecting the welding efficiency of water pipes and causing great inconvenience.

[0004] Therefore, those skilled in the art have provided a water pipe positioning structure for a dual-gun water pipe welding machine to solve the problems mentioned in the background art. Summary of the Invention

[0005] To overcome the aforementioned deficiencies of the prior art, this utility model provides a water pipe positioning structure for a dual-gun water pipe welding machine. By setting a positioning mechanism, the positioning mechanism extends via a cylinder during use. When the positioning mechanism enters the water pipe, the structure opens to fully insert the positioning pin into the water pipe for precise positioning, ensuring the accuracy and stability of the ring welding. This is suitable for current fully automated welding, is very convenient, and can greatly improve welding efficiency. Furthermore, by setting a pressure sensor, the extrusion pressure between the positioning pin and the water pipe can be monitored in real time, and the working state of the drive cylinder can be adjusted via a PLC controller to avoid the extrusion pressure being too large or too small affecting the fixation of the water pipe, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A water pipe positioning structure for a dual-gun water pipe welding machine includes a drive cylinder with a positioning mechanism. The positioning mechanism includes a connecting plate fixedly connected to the movable end of the drive cylinder. A drive gear is rotatably connected to the center of the connecting plate. Four positioning pins are embedded and slidably connected to the connecting plate. The four positioning pins are arranged perpendicularly in pairs. A toothed strip is fixedly connected to one end of each of the four positioning pins inside the connecting plate. All four toothed strips are in a meshing state with the drive gear.

[0008] As a further embodiment of this utility model, the positioning mechanism further includes a sleeve fixedly connected to the drive cylinder, with an inner column penetrating through the front end of the sleeve. A spiral groove is provided on the sleeve, and a limiting slider is fixedly connected to the outer wall of the inner column. The limiting slider is located inside the spiral groove, and a connecting piece is connected to the front end of the inner column. The connecting piece is also connected to the connecting plate.

[0009] As a further embodiment of this utility model, the connector has two rotatably connected internally, and the two wheels are connected by a belt. One of the wheels is fixedly connected to the inner column, and the other wheel is fixedly connected to the drive gear.

[0010] As a further improvement of this utility model, the four toothed strips are also arranged perpendicularly in pairs, and the heights of the four toothed strips are all different.

[0011] As a further embodiment of this utility model, a PLC controller is connected to the drive cylinder, and a pressure sensor is provided on the arc surface of the positioning pin, and the pressure sensor is electrically connected to the PLC controller.

[0012] As a further improvement of this invention, the pressure sensor can fully contact the inner wall of the water pipe and monitor the squeezing force between the positioning pin and the water pipe in real time.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] By setting up a positioning mechanism, the positioning mechanism extends through a cylinder during use. When the positioning mechanism enters the water pipe, the opening structure fully inserts the positioning pin into the water pipe for precise positioning, ensuring the accuracy and stability of the ring welding. It is suitable for current fully automated welding, which is very convenient and can greatly improve welding efficiency. Secondly, by setting up a pressure sensor, the extrusion pressure between the positioning pin and the water pipe can be monitored in real time, and the working state of the drive cylinder can be adjusted through the PLC controller to avoid the extrusion pressure being too large or too small and affecting the fixation of the water pipe. Attached Figure Description

[0015] Figure 1 is a three-dimensional structural diagram of a water pipe positioning structure for a dual-gun water pipe welding machine;

[0016] Figure 2 is a schematic diagram of the internal structure of the connecting disk in Figure 1;

[0017] Figure 3 is a schematic diagram of the three-dimensional structure of the exploded column in Figure 1.

[0018] In the diagram: 1. Drive cylinder; 2. Connecting plate; 3. Drive gear; 4. Gear rack; 5. Positioning pin; 6. Sleeve; 7. Inner column; 8. Connecting piece; 9. Spiral groove; 10. Limit slider; 11. Pressure sensor; 12. PLC controller. Detailed Implementation

[0019] Please refer to Figures 1-3. In this embodiment of the utility model, a water pipe positioning structure for a double-gun water pipe welding machine includes a drive cylinder 1. A positioning mechanism is provided on the drive cylinder 1. The positioning mechanism includes a connecting plate 2 fixedly connected to the movable end of the drive cylinder 1. A drive gear 3 is rotatably connected to the center of the connecting plate 2. Four positioning pins 5 are embedded and slidably connected on the connecting plate 2. The four positioning pins 5 are arranged perpendicularly in pairs. A toothed strip 4 is fixedly connected to one end of each of the four positioning pins 5 inside the connecting plate 2. The four toothed strips 4 are all in a meshing state with the drive gear 3. The drive cylinder 1 can move the connecting plate 2 to the inside of the water pipe to be fixed, so that the positioning pins 5 can fix the water pipe.

[0020] The positioning mechanism also includes a sleeve 6 fixedly connected to the drive cylinder 1. The front end of the sleeve 6 has an inner column 7 extending through it. A spiral groove 9 is provided on the sleeve 6. A limit slider 10 is fixedly connected to the outer wall of the inner column 7. The limit slider 10 is located inside the spiral groove 9. A connector 8 is connected to the front end of the inner column 7. The connector 8 is also connected to the connecting plate 2.

[0021] The internal rotating connection of the connector 8 consists of two round wheels, which are connected by a belt. One of the round wheels is fixedly connected to the inner column 7, and the other round wheel is fixedly connected to the drive gear 3.

[0022] The four toothed bars 4 are also set vertically in pairs, and the heights of the four toothed bars 4 are all different.

[0023] A PLC controller 12 is connected to the drive cylinder 1, and a pressure sensor 11 is provided on the arc surface of the positioning pin 5. The pressure sensor 11 is electrically connected to the PLC controller 12.

[0024] The pressure sensor 11 can make full contact with the inner wall of the water pipe and monitor the squeezing force between the positioning pin 5 and the water pipe in real time.

[0025] The working principle of this utility model is as follows: When it is necessary to fix the water pipe to be fixed, the drive cylinder 1 first moves the connecting plate 2 into the inside of the water pipe. When the connecting plate 2 moves, it can drive the connecting piece 8 to move synchronously, and then drive the inner column 7 to move based on the sleeve column 6. At this time, under the limit of the spiral slide groove 9 and the limiting slider 10, the inner column 7 can rotate based on the sleeve column 6. Finally, the drive gear 3 inside the connecting plate 2 is driven to rotate through the connecting piece 8. When the drive gear 3 rotates, it can push the toothed strip 4 to move, thereby moving the positioning pin 5 to the outside of the connecting plate 2, thus fixing the water pipe from the inside of the water pipe. At the same time, the pressure sensor 11 on the positioning pin 5 can monitor the squeezing force between the water pipe and the positioning pin 5 in real time. When the squeezing force reaches the effect of fixing the water pipe, the PLC controller 12 can stop the drive cylinder 1 to prevent the squeezing force from being too large or too small from affecting the fixing of the water pipe.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A water pipe positioning structure for a dual-gun water pipe welding machine, comprising a drive cylinder (1), characterized in that: The driving cylinder (1) is provided with a positioning mechanism, which includes a connecting plate (2) fixedly connected to the moving end of the driving cylinder (1). A driving gear (3) is rotatably connected to the center of the connecting plate (2). Four positioning pins (5) are embedded and slidably connected on the connecting plate (2). The four positioning pins (5) are arranged perpendicularly in pairs. One end of each of the four positioning pins (5) located inside the connecting plate (2) is fixedly connected to a toothed strip (4). The four toothed strips (4) are all in a meshing state with the driving gear (3).

2. The water pipe positioning structure for a dual-gun water pipe welding machine according to claim 1, characterized in that, The positioning mechanism also includes a sleeve (6) fixedly connected to the drive cylinder (1). The front end of the sleeve (6) has an inner column (7) through it. The sleeve (6) has a spiral groove (9) on it. A limit slider (10) is fixedly connected to the outer wall of the inner column (7). The limit slider (10) is located inside the spiral groove (9). The front end of the inner column (7) is connected to a connector (8). The connector (8) is also connected to the connecting plate (2).

3. The water pipe positioning structure for a dual-gun water pipe welding machine according to claim 2, characterized in that, The connector (8) has two rotating wheels inside, which are connected by a belt. One of the wheels is fixedly connected to the inner column (7), and the other wheel is fixedly connected to the drive gear (3).

4. The water pipe positioning structure for a dual-gun water pipe welding machine according to claim 1, characterized in that, The four toothed strips (4) are also arranged perpendicularly in pairs, and the heights of the four toothed strips (4) are all different.

5. The water pipe positioning structure for a dual-gun water pipe welding machine according to claim 1, characterized in that, A PLC controller (12) is connected to the drive cylinder (1), and a pressure sensor (11) is provided on the arc surface of the positioning pin (5). The pressure sensor (11) is electrically connected to the PLC controller (12).

6. The water pipe positioning structure for a dual-gun water pipe welding machine according to claim 5, characterized in that, The pressure sensor (11) can fully contact the inner wall of the water pipe and monitor the squeezing force between the positioning pin (5) and the water pipe in real time.

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