Efficient sweat soldering device for plastic pipes

Abstract

The utility model relates to the technical field of welding devices, in particular to an efficient hot melting welding device for plastic pipes, which comprises a base, two first mounting frames are symmetrically arranged at the top of the base, one first mounting frame is fixed at the top of the base, and the other first mounting frame is connected with the base through an adjusting mechanism. And limiting cylinders are mounted on one sides of the two first mounting frames, the limiting cylinders penetrate through the corresponding first mounting frames, the two limiting cylinders are coaxially arranged, the side face of each limiting cylinder is slidably sleeved with a connecting ring, and a pair of telescopic mechanisms is symmetrically mounted on one side of each connecting ring. The telescopic mechanism can push the connecting ring to move so as to drive the connecting rod to rotate, the connecting rod synchronously pushes the pressing plate to move while rotating, a pipe in the limiting cylinder is clamped and fixed, the pipe is positioned while being fixed, dislocation of the pipe is avoided, and the using effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and in particular to a high-efficiency hot melt welding device for plastic pipes. Background Technology

[0002] Plastic pipes are tubular materials made primarily of high molecular polymers. They are processed through processes such as extrusion molding and injection molding. In practical applications, some environments require welding two or more plastic pipes together. When welding plastic pipes, hot melt welding equipment is generally used.

[0003] Existing thermofusion welding equipment typically involves fixing two pipes together with clamps, heating the pipe ends with a heating plate, and then pressing the two pipe ends together. Once the pipe ends cool, the two pipes are fixed together, completing the weld. However, during the welding process, the clamps can only clamp the pipes, not position them. This necessitates using a positioning mechanism to position the pipes after they are fixed before fusion welding can begin, resulting in poor performance. Furthermore, the heating of the pipe ends during welding releases harmful gases, some of which flow along the pipe, while others accumulate in the surrounding environment, posing a health hazard to workers. Therefore, we propose a high-efficiency thermofusion welding device for plastic pipes. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a high-efficiency hot-melt welding device for plastic pipes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-efficiency hot melt welding device for plastic pipes is designed, including a base, two first mounting brackets are symmetrically arranged on the top of the base, one of the first mounting brackets is fixed to the top of the base, and the other first mounting bracket is connected to the base through an adjustment mechanism. A limiting cylinder is installed on one side of each of the two first mounting brackets, and the limiting cylinders pass through the corresponding first mounting brackets, and the two limiting cylinders are coaxially arranged.

[0006] Each limiting cylinder has a connecting ring slidably fitted on its side. A pair of telescopic mechanisms are symmetrically installed on one side of each connecting ring. The other end of each pair of telescopic mechanisms is fixed on the side of the first mounting frame.

[0007] Each connecting ring has a connecting rod connected to the other side via a hinge seat. Each limiting cylinder has several slots on both sides. The other end of each connecting rod passes through the slot and extends into the limiting cylinder. Each limiting cylinder has several pressure plates inside. The end of each connecting rod away from the connecting ring is fixed to the side of the pressure plate via a hinge seat.

[0008] A heating ring is provided above the base. Both ends of the heating ring are fixed to the top of the base by the second mounting bracket. The heating ring is coaxial with the limiting cylinder. A heating cavity is provided on the side of the heating ring. A heating resistance wire is installed inside the heating cavity.

[0009] The heating ring has receiving grooves at both ends, and each receiving groove has an annular tube installed inside. The inner surface of the annular tube has several adsorption holes, and the two annular tubes are connected by a gas collecting pipe. A negative pressure pump is also installed on the top of the base. The air inlet of the negative pressure pump is connected to a gas delivery pipe, and the other end of the gas delivery pipe is fixed to the side of the gas collecting pipe. The air outlet of the negative pressure pump is connected to an exhaust pipe, and the other end of the exhaust pipe is connected to the waste gas treatment equipment.

[0010] Preferably, the adjustment mechanism includes a connecting block installed at the bottom of another first mounting bracket, a groove is provided at one top end of the base, the bottom of the connecting block extends into the groove, and a lead screw is rotatably connected inside the groove. The lead screw passes through the connecting block and is threadedly connected to the connecting block. A drive motor is connected to one end of the lead screw, and the drive motor is fixed on the side of the base.

[0011] Preferably, at least one second guide rod is also installed inside the groove, and the second guide rod slides through the connecting block.

[0012] Preferably, the outer side of the heating ring is provided with two arc-shaped cover plates coaxially, the two arc-shaped cover plates cover the opening of the heating chamber, and the near ends of the two arc-shaped cover plates are fastened by bolts.

[0013] Preferably, the annular tube is located inside the receiving groove, and there is a gap between the end of the adsorption hole and the inner surface of the heating ring.

[0014] Preferably, each of the two sides of the first mounting bracket is vertically mounted with several first guide rods, and each first guide rod slides through the corresponding connecting ring.

[0015] Preferably, a control cabinet is mounted on the side of one of the first mounting brackets, and the controller inside the control cabinet is connected to the negative pressure pump, the telescopic mechanism, the heating resistance wire and the drive motor respectively through wires.

[0016] The design scheme proposed in this utility model has the following beneficial effects in application:

[0017] The telescopic mechanism can push the connecting ring to move, which in turn drives the connecting rod to rotate. As the connecting rod rotates, it simultaneously pushes the pressure plate to move, clamping and fixing the pipe inside the limiting cylinder. At the same time, it positions the pipe to prevent misalignment and improve the performance.

[0018] The negative pressure pump uses a gas delivery pipe, a gas collection pipe, and a ring pipe to generate suction in the adsorption holes, adsorbing the waste gas emitted from the heated end of the pipe and discharging it through the exhaust pipe into the waste gas treatment equipment for treatment. This prevents waste gas from accumulating at the hot-melt welding area, thus avoiding harm to the health of workers and improving the effectiveness of use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the connection structure between the negative pressure pump and the annular pipe of this utility model.

[0021] Figure 3 This is a side sectional view of the limiting cylinder structure of this utility model;

[0022] Figure 4 This is the front view of the present invention;

[0023] Figure 5 This is a side sectional view of the heating ring structure of this utility model.

[0024] In the diagram: 1. Base; 2. Negative pressure pump; 3. Exhaust pipe; 4. Gas supply pipe; 5. Gas collection pipe; 6. Limiting cylinder; 7. Connecting ring; 8. First mounting bracket; 9. First guide rod; 10. Second mounting bracket; 11. Heating ring; 12. Telescopic mechanism; 13. Connecting rod; 14. Pressure plate; 15. Strip groove; 16. Control cabinet; 17. Adsorption hole; 18. Annular tube; 19. Receiving groove; 20. Arc-shaped cover plate; 21. Heating chamber; 22. Heating resistance wire; 23. Groove; 24. Lead screw; 25. Drive motor; 26. Second guide rod; 27. Connecting block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Reference Figures 1-5 A high-efficiency hot melt welding device for plastic pipes includes a base 1. Two first mounting brackets 8 are symmetrically arranged on the top of the base 1. One of the first mounting brackets 8 is fixed to the top of the base 1, and a control cabinet 16 is installed on the side of the first mounting bracket 8. The control cabinet 16 is equipped with a controller, which is one of a control motherboard, a host, or a PLC logic controller.

[0027] like Figure 1As shown, another first mounting bracket 8 is connected to the base 1 via an adjustment mechanism. The adjustment mechanism includes a connecting block 27 installed at the bottom of the other first mounting bracket 8. A groove 23 is provided at one end of the top of the base 1. The bottom of the connecting block 27 extends into the groove 23, and a lead screw 24 is rotatably connected inside the groove 23. The lead screw 24 passes through the connecting block 27 and is threadedly connected to the connecting block 27. A drive motor 25 is connected to one end of the lead screw 24. The drive motor 25 is fixed on the side of the base 1. The first drive motor 25 is connected to the controller via a wire. In actual use, the drive motor 25 can drive the lead screw 24 to rotate, thereby driving the first mounting bracket 8 to move horizontally, thus adjusting the distance between the two first mounting brackets 8 as needed.

[0028] It should be noted that, as Figure 1 As shown, at least one second guide rod 26 is also installed inside the groove 23. The second guide rod 26 slides through the connecting block 27. The connecting block 27 can be limited by the second guide rod 26, thereby making the first mounting bracket 8 stable.

[0029] like Figure 1 As shown, a limiting cylinder 6 is installed on one side of each of the two first mounting brackets 8. The limiting cylinder 6 passes through the corresponding first mounting bracket 8 and the two limiting cylinders 6 are coaxially arranged. In actual use, two pipes that need to be welded together can be inserted into the corresponding limiting cylinder 6 and limited by the limiting cylinder 6.

[0030] like Figure 1 and Figure 3 As shown, each limiting cylinder 6 has a connecting ring 7 slidably fitted on its side. Each connecting ring 7 has a pair of telescopic mechanisms 12 symmetrically installed on one side. The other end of each pair of telescopic mechanisms 12 is fixed on the side of the first mounting frame 8. The telescopic mechanism 12 is one of an electric push rod, a cylinder, or a hydraulic rod. In actual use, the connecting ring 7 can be pushed to move along the limiting cylinder 6 through the telescopic mechanism 12.

[0031] like Figure 1 , Figure 3 and Figure 4As shown, each connecting ring 7 has a connecting rod 13 connected to its other side via a hinge seat. Each limiting cylinder 6 has several strip grooves 15 on both sides. The other end of each connecting rod 13 passes through the strip groove 15 and extends into the limiting cylinder 6. Each limiting cylinder 6 has several pressure plates 14 inside. The end of each connecting rod 13 away from the connecting ring 7 is fixed to the side of the pressure plate 14 via a hinge seat. In actual use, when the telescopic mechanism 12 extends or retracts, it will drive the connecting ring 7 to move, which will in turn drive the connecting rod 13 to tilt. This will cause the pressure plate 14 to move synchronously, thereby clamping and fixing the pipe. At the same time, it will also position the two pipes to prevent misalignment of the pipes during hot melt welding.

[0032] like Figure 1 and Figure 5 As shown, a heating ring 11 is provided above the base 1. Both ends of the heating ring 11 are fixed to the top of the base 1 by the second mounting bracket 10. The heating ring 11 is coaxially arranged with the limiting cylinder 6. A heating cavity 21 is provided on the side of the heating ring 11. A heating resistance wire 22 is installed inside the heating cavity 21. The heating resistance wire 22 is connected to the controller through a wire. In actual use, the ends of the clamped and fixed pipes will abut against each other inside the heating ring 11. Then, the heating resistance wire 22 can generate high temperature to heat the ends of the two pipes, so that the ends of the pipes melt and weld together.

[0033] like Figure 5 As shown, two arc-shaped cover plates 20 are coaxially provided on the outer side of the heating ring 11. The two arc-shaped cover plates 20 cover the opening of the heating chamber 21, and the near ends of the two arc-shaped cover plates 20 are fastened with bolts. The arc-shaped cover plates 20 can block the opening of the heating chamber 21, so that the heating resistance wire 22 is located in a closed space, thus protecting the heating resistance wire 22.

[0034] like Figure 2 and Figure 5 As shown, a receiving groove 19 is provided at both ends inside the heating ring 11. An annular tube 18 is installed inside each receiving groove 19. Several adsorption holes 17 are provided on the inner surface of the annular tube 18. Two annular tubes 18 are connected by a gas collecting pipe 5. A negative pressure pump 2 is also installed on the top of the base 1. The air inlet end of the negative pressure pump 2 is connected to a gas supply pipe 4. The other end of the gas supply pipe 4 is fixed to the side of the gas collecting pipe 5. The air outlet end of the negative pressure pump 2 is connected to an exhaust pipe 3. The other end of the exhaust pipe 3 is connected to the waste gas treatment equipment. In actual use, the negative pressure pump 2 can generate negative pressure inside the gas supply pipe 4 and the gas collecting pipe 5, thereby generating suction inside the annular tube 18. The adsorption holes 17 adsorb the waste gas generated during the welding process and transport it into the exhaust pipe 3, and finally discharge it into the waste gas treatment equipment for treatment.

[0035] It should be noted that, as Figure 5 As shown, the annular tube 18 is located inside the receiving groove 19, and there is a gap between the end of the adsorption hole 17 and the inner surface of the heating ring 11. In this way, the adsorption hole 17 will not be blocked by the pipe, and the exhaust gas generated by the heating at the end of the pipe during the welding process can be successfully adsorbed, thus improving the performance.

[0036] Specifically, in use, the operator places the two pipes to be welded into the corresponding limiting cylinders 6, so that the near ends of the pipes abut against each other and are located inside the heating ring 11. Then, the operator controls the telescopic mechanism 12 to extend, which pushes the connecting ring 7 to move, causing the connecting rod 13 to rotate. During the rotation, the connecting rod 13 pushes the pressure plate 14 to move, so that the side of the pressure plate 14 tightly abuts against the surface of the pipe, clamping and positioning the pipe without the need for a positioning mechanism. After fixing, the operator controls the heating resistance wire 22 to heat the end of the pipe through the controller. At the same time, the operator controls the drive motor 2 5. During operation, the drive motor 25 drives the lead screw 24 to rotate, causing one of the first mounting brackets 8 to move along the groove 23, which in turn causes the limiting cylinder 6 connected to the first mounting bracket 8 to move. Under the action of the pressure plate 14, the limiting cylinder 6 drives one of the pipes to move horizontally, so that the ends of the two pipes are tightly pressed together and welded firmly. During the welding process, the negative pressure pump 2 can suck out the gas in the gas delivery pipe 4 and the gas collection pipe 5, so that a negative pressure is generated in the annular pipe 18. In this way, the adsorption hole 17 will generate suction, adsorb the waste gas emitted by the pipes during the welding process and transport it to the exhaust pipe 3. Finally, the waste gas is transported to the waste gas treatment equipment for treatment through the exhaust pipe 3.

[0037] Furthermore, such as Figure 1 and Figure 4 As shown, several first guide rods 9 are vertically installed on both sides of each first mounting bracket 8. Each first guide rod 9 slides through the corresponding connecting ring 7. The first guide rods 9 can limit the connecting ring 7, so that the connecting ring 7 remains stable.

[0038] 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 high efficiency hot melt welding device for plastic pipes comprising a base (1) characterised in that: Two first mounting brackets (8) are symmetrically provided on the top of the base (1). One of the first mounting brackets (8) is fixed on the top of the base (1), and the other first mounting bracket (8) is connected to the base (1) through an adjustment mechanism. Limiting cylinders (6) are installed on one side of both first mounting brackets (8). The limiting cylinders (6) pass through the corresponding first mounting brackets (8), and the two limiting cylinders (6) are coaxially arranged. Each limiting cylinder (6) has a connecting ring (7) slidably fitted on its side. Each connecting ring (7) has a pair of telescopic mechanisms (12) symmetrically installed on one side. The other end of each pair of telescopic mechanisms (12) is fixed on the side of the first mounting frame (8). Each connecting ring (7) has a connecting rod (13) connected to the other side via a hinge seat. Each limiting cylinder (6) has several strip grooves (15) on both sides. The other end of each connecting rod (13) passes through the strip groove (15) and extends into the limiting cylinder (6). Each limiting cylinder (6) has several pressure plates (14) inside. The end of each connecting rod (13) away from the connecting ring (7) is fixed to the side of the pressure plate (14) via a hinge seat. A heating ring (11) is provided above the base (1). Both ends of the heating ring (11) are fixed to the top of the base (1) by the second mounting bracket (10). The heating ring (11) is coaxially arranged with the limiting cylinder (6). A heating cavity (21) is opened on the side of the heating ring (11). A heating resistance wire (22) is installed inside the heating cavity (21). A receiving groove (19) is provided at both ends inside the heating ring (11). An annular tube (18) is installed inside each receiving groove (19). Several adsorption holes (17) are provided on the inner surface of the annular tube (18). The two annular tubes (18) are connected by a gas collecting pipe (5). A negative pressure pump (2) is also installed on the top of the base (1). The air inlet end of the negative pressure pump (2) is connected to a gas delivery pipe (4). The other end of the gas delivery pipe (4) is fixed on the side of the gas collecting pipe (5). The air outlet end of the negative pressure pump (2) is connected to an exhaust pipe (3). The other end of the exhaust pipe (3) is connected to the waste gas treatment equipment.

2. A high efficiency heat staking device for plastic tubing according to claim 1, wherein: The adjustment mechanism includes a connecting block (27) installed at the bottom of another first mounting bracket (8). A groove (23) is provided at one end of the top of the base (1). The bottom of the connecting block (27) extends into the groove (23), and a lead screw (24) is rotatably connected inside the groove (23). The lead screw (24) passes through the connecting block (27) and is threadedly connected to the connecting block (27). A drive motor (25) is connected to one end of the lead screw (24), and the drive motor (25) is fixed on the side of the base (1).

3. A high efficiency heat staking device for plastic tubing as defined in claim 2, wherein: At least one second guide rod (26) is also installed inside the groove (23), and the second guide rod (26) slides through the connecting block (27).

4. The efficient heat staking device for plastic tubulars according to claim 1, characterized in that: Two arc-shaped cover plates (20) are coaxially provided on the outer side of the heating ring (11). The two arc-shaped cover plates (20) cover the opening of the heating chamber (21), and the two arc-shaped cover plates (20) are fastened together by bolts at their close ends.

5. The high-efficiency hot-melt welding device for plastic pipes according to claim 1, characterized in that: The annular tube (18) is located inside the receiving groove (19), and there is a gap between the end of the adsorption hole (17) and the inner surface of the heating ring (11).

6. A high efficiency heat staking device for plastic tubing as defined in claim 1, wherein: Each first mounting bracket (8) has several first guide rods (9) vertically mounted on both sides of its two edges, and each first guide rod (9) slides through the corresponding connecting ring (7).

7. A high efficiency heat staking device for plastic tubing as defined in claim 1, wherein: One of the first mounting brackets (8) has a control cabinet (16) mounted on its side. The controller inside the control cabinet (16) is connected to the negative pressure pump (2), the telescopic mechanism (12), the heating resistance wire (22), and the drive motor (25) respectively via wires.

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