Plastic pipe hot melt expanding device

Abstract

The utility model discloses a plastic pipe hot melting pipe expanding device, including work table and connecting plate, the connecting plate one end top fixedly connected with rack, work table other side top fixedly connected with support, the support below both sides inside rotation connection has the rotating lever. The utility model in the actual use's process, work table provides the basic support for the device, and the electric push rod drive connecting seat slides along the positioning rod, and the rack of connecting seat connecting plate is engaged with the gear of rotating lever, and through the transmission of belt pulley no.1, belt, belt pulley no.2, makes the rotating of bidirectional screw rod, drives the connecting block, and the rotating plate lets the upper clamp down, and cooperates with the lower clamp and clamps the plastic pipe, and the electric heater in connecting seat preheats, expands the pipe for the pipe expanding head, solves the problem that traditional device manual operation is more, and the positioning and pipe expanding efficiency are low, and through mechanical linkage automatic clamping, synchronous preheating pipe expanding, positioning accuracy promotes, and the single pipe expanding time is shortened, and the hot melting pipe expanding operation efficiency and stability are improved greatly.

Description

Technical Field

[0001] This utility model relates to the field of plastic pipe hot melt expansion technology, specifically a plastic pipe hot melt expansion device. Background Technology

[0002] A plastic pipe hot-melt expansion device is a piece of equipment used to expand the diameter of the end of a plastic pipe. It consists of a heating die and an expansion mold. The heating die softens the end of the plastic pipe by electric heating. Then, the expansion mold (such as a conical mandrel) is inserted into the softened end under hydraulic or mechanical drive, and expands it to a set diameter by extrusion. After cooling, it forms a flared or socket structure. It is suitable for flaring before connecting PVC, PE and other plastic pipes, and can improve the sealing performance and connection strength of the pipe joint.

[0003] A search revealed that Chinese patent CN 221496797 U3 discloses a hot-melt device for plastic pipe fittings. The patent describes a technical solution that uses an arc-shaped support plate and a cover plate, both of which have arc-shaped cross-sections. The inner walls of the support plate and the cover plate are attached to the outer side of the pipe, which helps to confine the pipe and prevent it from shifting and being damaged during hot-melt.

[0004] In this solution, when expanding a plastic pipe, the plastic pipe needs to be fixedly installed on the clamp first, and then the expansion device is started to expand the pipe. After the expansion is completed, the clamping device is disassembled to remove the part. The lack of synchronous fixing and expansion linkage and the manual connection process make the processing of a single pipe time-consuming and laborious, resulting in a significant reduction in efficiency. In order to solve this technical problem, this utility model proposes a plastic pipe hot melt expansion device. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In this solution, when expanding a plastic pipe, the plastic pipe needs to be fixedly installed on the clamp first, and then the expansion device is started to expand the pipe. After the expansion is completed, the clamping device is disassembled to remove the part. The lack of synchronous fixing and expansion linkage and the manual connection process make the processing of a single pipe time-consuming and laborious, resulting in a significant reduction in efficiency. In order to solve this technical problem, this utility model proposes a plastic pipe hot melt expansion device.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a plastic pipe hot-melt expansion device, comprising a workbench and a connecting plate. A rack is fixedly connected to the top of the other end of the connecting plate, and a bracket is fixedly connected to the top of the other side of the workbench. Rotating rods are rotatably connected to the lower sides of the bracket. A gear is fixedly connected to the outer wall of one end of each rotating rod. A pulley is fixedly connected to the outer wall of the rotating rod. A bidirectional threaded rod is rotatably connected to the upper part of the bracket. Pulleys are fixedly connected to both ends of the bidirectional threaded rod, and pulleys are connected to pulleys via belts. Connecting blocks are threaded to the outer walls of both sides of the bidirectional threaded rod. A rotating plate is rotatably connected to the bottom of the connecting block, and an upper clamp is rotatably connected to the other end of the rotating plate.

[0009] Preferably, a base is fixedly connected to the top of one side of the workbench, an electric push rod is fixedly connected to the top of the base, a connecting seat is fixedly connected to the output end of the electric push rod, the connecting plate is fixedly connected to the outer walls of both sides of the connecting seat, and the gear meshes with the rack.

[0010] Preferably, a lower clamp is fixedly connected to the top of the workbench, the lower clamp corresponds to the upper clamp, and a plastic tube is provided between the upper clamp and the lower clamp.

[0011] Preferably, an electric heater is fixedly connected inside the connector, and an expansion head is provided on one side of the electric heater, which corresponds to one end of the plastic tube.

[0012] Preferably, a pair of positioning rods are fixedly connected between the base and the bracket, the connecting seat is slidably connected to the outer wall of the positioning rods, and the two ends of the rotating plate are respectively rotatably connected to the connecting block and the upper clamp through limiting rods.

[0013] Preferably, a connecting frame is fixedly connected to the outer wall of the workbench, and a support base is fixedly connected to the top of the other end of the connecting frame. A roller is rotatably connected inside the support base, and a plastic tube is placed on the roller.

[0014] (III) Beneficial Effects

[0015] This utility model provides a plastic tube hot-melt expansion device. It has the following beneficial effects:

[0016] (1) The workbench provides basic support for the device. The electric push rod drives the connecting seat to slide along the positioning rod. The rack of the connecting plate on the connecting seat meshes with the gear of the rotating rod. Through the transmission of pulley one, belt, and pulley two, the bidirectional threaded rod rotates, driving the connecting block and rotating plate to move the upper clamp down and cooperate with the lower clamp to clamp the plastic tube. At the same time, the electric heater in the connecting seat preheats and expands the tube head, which solves the problems of manual operation and low positioning and expansion efficiency of traditional devices. Through mechanical linkage, automatic clamping and synchronous preheating of the tube expander improves the positioning accuracy, shortens the tube expansion time of a single tube, and greatly improves the efficiency and stability of hot melt tube expansion operation.

[0017] (2) The support seat on the connecting frame can support the long conveying pipe, prevent the plastic pipe from bending due to gravity, and thus protect the plastic pipe. The roller reduces friction when the plastic pipe moves. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a top view of the overall structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the top structure of the workbench of this utility model;

[0021] Figure 4 This is a schematic diagram of the bottom structure of the bracket of this utility model.

[0022] In the diagram: 1. Workbench; 2. Base; 3. Electric push rod; 4. Connecting seat; 5. Electric heater; 6. Connecting plate; 7. Rack; 8. Rotating rod; 9. Gear; 10. Belt pulley one; 11. Belt; 12. Belt pulley two; 13. Bidirectional threaded rod; 14. Connecting block; 15. Rotating plate; 16. Limiting rod; 17. Upper clamp; 18. Lower clamp; 19. Bracket; 20. Plastic tube; 21. Connecting frame; 22. Support seat; 23. Roller; 24. Expanding head; 25. Limiting rod. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] Please see Figures 1-4 This utility model provides a technical solution:

[0025] Example 1: A plastic pipe hot-melt expansion device includes a workbench 1 and a connecting plate 6. A rack 7 is fixedly connected to the top of the other end of the connecting plate 6. A bracket 19 is fixedly connected to the top of the other side of the workbench 1. Rotating rods 8 are rotatably connected to the lower sides of the bracket 19. A gear 9 is fixedly connected to the outer wall of one end of each rotating rod 8. A pulley 10 is fixedly connected to the outer wall of the rotating rod 8. A bidirectional threaded rod 13 is rotatably connected to the upper part of the bracket 19. A pulley 2 12 is fixedly connected to both ends of the bidirectional threaded rod 13, and the pulley 2 12 is connected to the pulley 10 through a belt 11. Connecting blocks 14 are threadedly connected to the outer walls of both sides of the bidirectional threaded rod 13. A rotating plate 15 is rotatably connected to the bottom of the connecting block 14. An upper clamp 17 is rotatably connected to the other end of the rotating plate 15. The workbench 1 is fixedly connected to a base 2, and an electric push rod 3 is fixedly connected to the top of the base 2. A connecting seat 4 is fixedly connected to the output end of the electric push rod 3. A connecting plate 6 is fixedly connected to the outer walls of both sides of the connecting seat 4, and a gear 9 meshes with a rack 7. A lower clamp 18 is fixedly connected to the top of the workbench 1, and the lower clamp 18 corresponds to the upper clamp 17. A plastic tube 20 is provided between the upper clamp 17 and the lower clamp 18. An electric heater 5 is fixedly connected inside the connecting seat 4. An expansion head 24 is provided on one side of the electric heater 5, and the expansion head 24 corresponds to one end of the plastic tube 20. A pair of positioning rods 25 are fixedly connected between the base 2 and the bracket 19. The connecting seat 4 is slidably connected to the outer wall of the positioning rods 25. At the same time, the two ends of the rotating plate 15 are rotatably connected to the connecting block 14 and the upper clamp 17 respectively through the limiting rods 16.

[0026] When using the plastic tube hot melt expansion device, first align one end of the plastic tube 20 with the lower clamp 18, start the electric push rod 3, which pushes the connecting seat 4 to slide along the positioning rod 25 toward the bracket 19. The movement of the connecting seat 4 drives the two connecting plates 6 to move synchronously. The rack 7 on the connecting plate 6 moves accordingly. Since the rack 7 meshes with the gear 9, the movement of the rack 7 drives the gear 9 to rotate. The gear 9 drives the rotating rod 8 to rotate. The pulley 10 on the rotating rod 8 transmits power to the pulley 12 through the belt 11, causing the bidirectional threaded rod 13 to rotate. The rotation of the bidirectional threaded rod 13 causes the connecting blocks 14 to move towards each other. The connecting blocks 14 drive the rotating plate 15 to rotate with the help of the limiting rod 16. The rotating plate 15 pushes the upper clamp 17 to move down, cooperating with the lower clamp 18 to clamp the plastic tube 20 from the top and bottom. After clamping, rack 7 disengages from gear 9, and electric heater 5 inside connecting seat 4 preheats tube expander head 24. Connecting seat 4 continues to move, driving tube expander head 24 to expand one end of plastic tube 20. High temperature softens and expands the port. Once tube expansion is complete, electric push rod 3 retracts, causing upper clamp 17 to move upward, facilitating the removal of plastic tube 20. Through this coordinated operation, the efficiency of tube expansion is significantly improved.

[0027] Example 2: The difference between this example and Example 1 is that a connecting frame 21 is fixedly connected to the outer wall of the workbench 1, and a support base 22 is fixedly connected to the top of the other end of the connecting frame 21. A roller 23 is rotatably connected inside the support base 22, and a plastic tube 20 is placed on the roller 23.

[0028] The support seat 22 on the connecting frame 21 can support the long conveying pipe, preventing the plastic pipe 20 from bending due to gravity, thereby protecting the plastic pipe 20. The roller 23 reduces friction when the plastic pipe 20 moves.

[0029] Working principle: When operating this plastic pipe hot melt expansion device, place the plastic pipe 20 to be processed on the roller 23 of the support seat 22, align one end of the plastic pipe 20 with the lower clamp 18, and then start the electric push rod 3. The electric push rod 3 carries the connecting seat 4 and slides along the positioning rod 25 towards the bracket 19. When the connecting seat 4 moves, the connecting plates 6 on both sides also move synchronously. The rack 7 on the connecting plate 6 begins to move. The rack 7 and the gear 9 are meshed. When the rack 7 moves, it drives the gear 9 to rotate, and the gear 9 in turn makes the rotating rod 8 rotate. The pulley 10 on the rotating rod 8 transmits power to the pulley 12 via the belt 11, thereby driving the bidirectional threaded rod 13 to rotate. The rotation of the bidirectional threaded rod 13 drives the connecting blocks 14 to move in opposite directions. The connecting blocks 14 drive the rotating plate 15 to rotate via the limiting rod 16. The rotating plate 15 pushes the upper clamp 17 to move downward, and together with the lower clamp 18, they tightly clamp the plastic tube 20 from the top and bottom. After clamping, the rack 7 moves away from the gear 9. The electric heater 5 in the connecting seat 4 preheats the expansion head 24. The connecting seat 4 continues to move, driving the expansion head 24 to expand one end of the plastic tube 20. The high temperature softens the end of the plastic tube 20 and expands it. After the expansion is completed, the electric push rod 3 retracts, which in turn causes the upper clamp 17 to move upward, making it easier to remove the plastic tube 20. Through their cooperation, the work efficiency is greatly improved.

[0030] All electrical components mentioned in this article are electrically connected to the controller and power supply. The control method of this utility model is controlled by the controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail (electric actuator model: XTL100-500-24).

[0031] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A plastic pipe hot-melt expansion device, characterized in that: The device includes a workbench (1) and a connecting plate (6). A rack (7) is fixedly connected to the top of the other end of the connecting plate (6). A bracket (19) is fixedly connected to the top of the other side of the workbench (1). Rotating rods (8) are rotatably connected to the lower sides of the bracket (19). A gear (9) is fixedly connected to the outer wall of one end of each rotating rod (8). A pulley (10) is fixedly connected to the outer wall of the rotating rod (8). A double-threaded rod (13) is rotatably connected to the upper side of the bracket (19). A pulley (12) is fixedly connected to both ends of the double-threaded rod (13). The pulley (12) is connected to the pulley (10) through a belt (11). A connecting block (14) is threadedly connected to the outer walls of both sides of the double-threaded rod (13). A rotating plate (15) is rotatably connected to the bottom of the connecting block (14). An upper clamp (17) is rotatably connected to the other end of the rotating plate (15).

2. The plastic pipe hot-melt expansion device according to claim 1, characterized in that: A base (2) is fixedly connected to the top of one side of the workbench (1), an electric push rod (3) is fixedly connected to the top of the base (2), a connecting seat (4) is fixedly connected to the output end of the electric push rod (3), a connecting plate (6) is fixedly connected to the outer walls of both sides of the connecting seat (4), and a gear (9) meshes with the rack (7).

3. The plastic pipe hot-melt expansion device according to claim 2, characterized in that: The workbench (1) is fixedly connected to a lower clamp (18) at the top. The lower clamp (18) corresponds to the upper clamp (17). A plastic tube (20) is provided between the upper clamp (17) and the lower clamp (18).

4. The plastic pipe hot-melt expansion device according to claim 3, characterized in that: An electric heater (5) is fixedly connected inside the connector (4). An expansion head (24) is provided on one side of the electric heater (5), and the expansion head (24) corresponds to one end of the plastic tube (20).

5. The plastic pipe hot-melt expansion device according to claim 4, characterized in that: A pair of positioning rods (25) are fixedly connected between the base (2) and the bracket (19). The connecting seat (4) is slidably connected to the outer wall of the positioning rod (25). At the same time, the two ends of the rotating plate (15) are rotatably connected to the connecting block (14) and the upper clamp (17) respectively through the limiting rod (16).

6. The plastic pipe hot-melt expansion device according to claim 5, characterized in that: The workbench (1) is fixedly connected to a connecting frame (21) on its outer side wall. A support base (22) is fixedly connected to the top of the other end of the connecting frame (21). A roller (23) is rotatably connected inside the support base (22), and a plastic tube (20) is placed on the roller (23).

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