A plastic pipe forming device

Abstract

This utility model relates to the field of plastic pipe production technology, specifically to a plastic pipe forming device, including a base, a water tank at one top end of the base, and an extrusion device at the other top end of the base, with the discharge end of the extrusion device placed inside the water tank; a feed inlet is located at the top of the end of the extrusion device away from the water tank, and a telescopic pipe is provided above the feed inlet. A second connecting frame and a first connecting frame are respectively connected to the upper and lower ends of the telescopic pipe. The first connecting frame is fixed to the feed inlet, and a feeding hopper is installed on the second connecting frame. A vibration motor is installed on the outer wall of the feeding hopper; a stirring shaft is provided inside the feeding hopper, and a second drive motor is connected to the top of the stirring shaft. This utility model, by installing a vibration motor on the outer wall of the feeding hopper, combined with the design of a compression spring and a guide shaft, enables the feeding hopper to vibrate rapidly, accelerating the flow of molten plastic raw materials, effectively preventing raw material agglomeration, and significantly improving the feeding rate.

Description

Technical Field

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

[0002] Plastic pipes are a general term for pipes made of plastic. They are typically made from synthetic resins with added stabilizers, lubricants, plasticizers, etc., through extrusion processing.

[0003] In the production of plastic pipes, an extruder is used to extrude plastic raw materials into a tubular shape. During the operation, the plastic raw material is first placed in the feed hopper of the extruder and falls into the extruder. It is then extruded to form a tubular shape and cooled by water to complete the molding of the plastic pipe. However, in this process, the raw material needs to be heated to a molten state before being fed into the extruder. After the raw material enters the extruder from the feed hopper, it takes a certain amount of time for the molten plastic raw material to flow. Moreover, plastic is relatively viscous in the molten state, resulting in a slower flow rate and making it more prone to solidification during transportation, which in turn affects the molding effect of the plastic pipe.

[0004] Therefore, a plastic pipe forming device is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a plastic pipe forming device that can solve the problem of slow plastic raw material feeding, which affects the forming efficiency of plastic pipes.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a plastic pipe forming device, including a base, a water tank at one top end of the base, and an extrusion device at the other top end of the base, with the discharge end of the extrusion device placed inside the water tank.

[0007] A feed inlet is provided at the top of the end of the extrusion equipment away from the water tank. A telescopic pipe is provided above the feed inlet. The upper and lower ends of the telescopic pipe are respectively connected to a second connecting frame and a first connecting frame. The first connecting frame is fixed on the feed inlet, and a feeding hopper is installed on the second connecting frame. A vibration motor is installed on the outer wall of the feeding hopper.

[0008] A stirring shaft is installed inside the hopper. A second drive motor is connected to the top of the stirring shaft. The second drive motor is mounted on a support plate, and the support plate is fixed to the top of the hopper. The stirring shaft is rotatably connected to the support plate. Several stirring blades are installed on the side of the stirring shaft at intervals. A push plate is provided at the lower end of the stirring shaft. The push plate is set along the inner wall of the hopper and is fixed to the stirring shaft by a connecting rod.

[0009] A first guide shaft is vertically installed at the top corner of the first connecting frame. The top of the first guide shaft is placed in the first sleeve, and the other end of the first sleeve is fixed on the second connecting frame. A compression spring is sleeved on the first guide shaft, and the two ends of the compression spring are respectively connected to the first connecting frame and the second connecting frame.

[0010] Preferably, the extrusion equipment includes a cylinder, which is installed at one end of the top of the base, and one end of the cylinder is fixed in a water tank. The feed inlet is located at the end of the cylinder away from the water tank. A spiral conveying shaft is coaxially arranged inside the cylinder. The end of the spiral conveying shaft away from the water tank passes through the cylinder and is connected to a first pulley. The conveying shaft is rotatably connected to the end of the cylinder. A second pulley is provided below the first pulley. The second pulley is connected to the first pulley via a belt. A first drive motor is coaxially mounted on the second pulley. The first drive motor is fixed to the base by a bracket.

[0011] Preferably, a heating plate is installed on the inner wall of the hopper.

[0012] Preferably, the support plate is located on the top side of the hopper, and a baffle is vertically installed on the top of the support plate.

[0013] Preferably, a support frame is rotatably connected to the lower end of the stirring shaft, the support frame is fixed to the bottom of the hopper, and a spiral blade is connected to the bottom of the stirring shaft, with the spiral blade placed in a telescopic tube.

[0014] Preferably, a second guide shaft is symmetrically provided on both sides of the hopper, the bottom of the second guide shaft is fixed on the base, and the top of the second guide shaft is placed in the second sleeve, which is fixed to the hopper.

[0015] Compared with the prior art, this utility model provides a plastic pipe forming device, which has the following features:

[0016] Beneficial effects:

[0017] 1. This utility model, by installing a vibration motor on the outer wall of the hopper, combined with the design of a compression spring and a guide shaft, enables the hopper to vibrate rapidly, accelerates the flow of molten plastic raw materials, effectively prevents raw material agglomeration, and significantly improves the feeding rate.

[0018] 2. This utility model, through the vibration of the hopper and the setting of the push plate, can further amplify the inertial motion of the raw material, reduce the squeezing effect at the bottom outlet, and ensure the smooth falling of the raw material. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the plastic pipe forming device of this utility model. Figure 1 ;

[0020] Figure 2This is a schematic diagram of the structure of the plastic pipe forming device of this utility model. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the internal structure of the feeding hopper of the plastic pipe forming device of this utility model;

[0022] Figure 4 This is a front view of the internal structure of the hopper of the plastic pipe forming device of this utility model.

[0023] In the diagram: 1. Base; 2. Cylinder; 3. Screw conveyor shaft; 4. First pulley; 5. Second pulley; 6. Belt; 7. First drive motor; 8. Water tank; 9. Feed inlet; 10. First connecting frame; 11. Telescopic tube; 12. Second connecting frame; 13. First guide shaft; 14. First sleeve; 15. Compression spring; 16. Feed hopper; 17. Stirring shaft; 18. Support plate; 19. Second drive motor; 20. Baffle; 21. Stirring blade; 22. Push plate; 23. Connecting rod; 24. Spiral blade; 25. Second sleeve; 26. Second guide shaft; 27. Vibration motor. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example:

[0026] Please see Figure 1 - Figure 4 A plastic pipe forming device in this embodiment includes a base 1, a water tank 8 is provided at one top end of the base 1, an extrusion device is provided at the other top end of the base 1, the discharge end of the extrusion device is placed in the water tank 8, and a feed port 9 is provided at the top of the end of the extrusion device away from the water tank 8.

[0027] Among them, such as Figure 1 and Figure 2As shown, the extrusion equipment includes a cylinder 2, which is installed at one end of the top of the base 1, and one end of the cylinder 2 is fixed in a water tank 8. The feed inlet 9 is located at the end of the cylinder 2 away from the water tank 8. A screw conveyor shaft 3 is coaxially arranged inside the cylinder 2. The end of the screw conveyor shaft 3 away from the water tank 8 passes through the cylinder 2 and is connected to a first pulley 4. The conveyor shaft 3 is rotatably connected to the end of the cylinder 2. A second pulley 5 is provided below the first pulley 4. The second pulley 5 is connected to the first pulley 4 through a belt 6. A first drive motor 7 is coaxially mounted on the second pulley 5. The first drive motor 7 is fixed to the base 1 by a bracket. In use, molten plastic enters the cylinder 2 from the feed inlet 9. As the screw conveyor shaft 3 rotates, it extrudes and conveys the raw material entering the cylinder 2, so that the raw material is output from the discharge end of the cylinder 2 and extruded into a tube shape. Finally, the extruded tube-shaped plastic is sent into the water tank 8 for cooling, thereby completing the forming of the plastic pipe.

[0028] like Figure 1 and 3 As shown, a telescopic tube 11 is provided above the feed inlet 9. In actual use, the telescopic tube 11 is a heat-insulated telescopic flexible tube. The upper and lower ends of the telescopic tube 11 are respectively connected to the second connecting frame 12 and the first connecting frame 10. The first connecting frame 10 is fixed on the feed inlet 9, and a feeding hopper 16 is installed on the second connecting frame 12. A vibration motor 27 is installed on the outer wall of the feeding hopper 16. That is, when adding plastic raw materials into the cylinder 2, the raw materials need to be poured into the feeding hopper 16 first. Under the vibration of the vibration motor 27, the feeding hopper 16 will be driven to vibrate on the cylinder 2, thereby accelerating the rate at which the raw materials in the feeding hopper 16 fall into the cylinder 2.

[0029] To stabilize the vibration of the hopper 16, second guide shafts 26 are symmetrically arranged on both sides of the hopper 16. The bottom of the second guide shaft 26 is fixed to the base 1, and the top of the second guide shaft 26 is placed in the second sleeve 25. The second sleeve 25 is fixed to the hopper 16 to guide the vibration of the hopper 16, so that the hopper 16 always moves back and forth vertically. At the same time, it provides a limit to the force on the hopper 16 in the horizontal direction, ensuring the stability of the hopper 16 and preventing horizontal swaying, which would cause the raw material to spill out of the hopper 16.

[0030] A stirring shaft 17 is provided inside the hopper 16. A second drive motor 19 is connected to the top of the stirring shaft 17. The second drive motor 19 is mounted on a support plate 18, and the support plate 18 is fixed to the top of the hopper 16. The stirring shaft 17 is rotatably connected to the support plate 18. Several stirring blades 21 are installed on the side of the stirring shaft 17 at intervals to stir the raw materials placed in the hopper 16. A heating plate is installed on the inner wall of the hopper 16 to heat the raw materials in the hopper 16 and prevent the molten plastic from solidifying due to cooling during the conveying process.

[0031] Furthermore, the support plate 18 is set on the top side of the hopper 16, so that the hopper 16 has an opening on one side, so that molten plastic can be poured into the hopper 16 from the opening. A baffle 20 is vertically installed on the top of the support plate 18 to shield and protect the second drive motor 19, preventing molten plastic from splashing onto the second drive motor 19 and causing damage to the second drive motor 19.

[0032] With the operation of the vibration motor 27, such as Figure 3 and Figure 4 As shown, a pusher plate 22 is provided at the lower end of the stirring shaft 17. The pusher plate 22 is arranged along the inner wall of the feeding hopper 16 and is fixed to the stirring shaft 17 by a connecting rod 23. Due to inertia, the molten plastic will also exhibit up-and-down jumping motion in the feeding hopper 16, which can reduce the squeezing effect of the molten plastic at the bottom outlet of the feeding hopper 16, allowing the plastic raw material to fall more quickly. The pusher plate 22 acts on the plastic, which can intensify the inertial effect of the raw material in the feeding hopper 16, allowing the plastic to fall at a faster rate.

[0033] To achieve a higher frequency of reciprocating motion of the hopper 16, a first guide shaft 13 is vertically installed at the top corner of the first connecting frame 10. The top of the first guide shaft 13 is placed in the first sleeve 14, and the other end of the first sleeve 14 is fixed on the second connecting frame 12. A compression spring 15 is sleeved on the first guide shaft 13, and the two ends of the compression spring 15 are respectively connected to the first connecting frame 10 and the second connecting frame 12. This not only provides guidance for the hopper 16 like the second guide shaft 26, but also provides a force for the reciprocating motion of the hopper 16, making the movement frequency of the hopper 16 faster and further accelerating the feeding rate of the raw materials in the hopper 16.

[0034] It should be noted that, as Figure 3 and Figure 4As shown, a support frame is rotatably connected to the lower end of the stirring shaft 17. The support frame is fixed to the bottom of the feeding hopper 16. A spiral blade 24 is connected to the bottom of the stirring shaft 17. The spiral blade 24 is placed in the telescopic tube 11. As the stirring shaft 17 rotates, the spiral blade 24 will also rotate in the telescopic tube 11, thereby further accelerating the rate at which the raw material falls into the cylinder 2.

[0035] Specifically, a control cabinet is also provided on one side of the base 1. The control cabinet contains a controller. The controller wires are connected to the heating plate, the vibration motor 27, the first drive motor 7, and the second drive motor 19 respectively. The controller is one of the following: a PLC logic controller, a control motherboard, or a control host.

[0036] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. As long as they can achieve their beneficial effects, they can be implemented. Therefore, this embodiment will not elaborate on their specific structural composition and working principle.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plastic pipe forming apparatus, characterised in that: Includes a base, with a water tank at one top end of the base and an extrusion device at the other top end of the base, the discharge end of the extrusion device being placed inside the water tank; The extrusion equipment has a feed inlet at the top of the end away from the water tank. A telescopic tube is provided above the feed inlet. A second connecting frame and a first connecting frame are respectively connected to the upper and lower ends of the telescopic tube. The first connecting frame is fixed on the feed inlet. A feeding hopper is installed on the second connecting frame. A vibration motor is installed on the outer wall of the feeding hopper. The hopper is equipped with a stirring shaft inside. A second drive motor is connected to the top of the stirring shaft. The second drive motor is mounted on a support plate. The support plate is fixed to the top of the hopper. The stirring shaft is rotatably connected to the support plate. Several stirring blades are installed on the side of the stirring shaft at intervals. A push plate is provided at the lower end of the stirring shaft. The push plate is arranged along the inner wall of the hopper. The push plate is fixed to the stirring shaft by a connecting rod. Each of the top corners of the first connecting frame is vertically mounted with a first guide shaft. The top of the first guide shaft is placed in a first sleeve, and the other end of the first sleeve is fixed to the second connecting frame. A compression spring is sleeved on the first guide shaft, and the two ends of the compression spring are respectively connected to the first connecting frame and the second connecting frame.

2. The plastic pipe forming apparatus of claim 1, wherein: The extrusion equipment includes a cylinder mounted on the top end of the base. One end of the cylinder is fixed in the water tank. The feed inlet is located at the end of the cylinder away from the water tank. A spiral conveying shaft is coaxially arranged inside the cylinder. The end of the spiral conveying shaft away from the water tank passes through the cylinder and is connected to a first pulley. The conveying shaft is rotatably connected to the end of the cylinder. A second pulley is located below the first pulley. The second pulley is connected to the first pulley via a belt. A first drive motor is coaxially mounted on the second pulley. The first drive motor is fixed to the base by a bracket.

3. The plastic pipe forming apparatus of claim 1, wherein: A heating plate is installed on the inner wall of the hopper.

4. The plastic pipe forming apparatus of claim 1, wherein: The support plate is disposed on the top side of the hopper, and a baffle is vertically installed on the top of the support plate.

5. The plastic pipe forming apparatus of claim 1, wherein: The lower end of the stirring shaft is rotatably connected to a support frame, which is fixed to the bottom of the hopper. The bottom of the stirring shaft is connected to a spiral blade, which is placed inside the telescopic tube.

6. The plastic pipe forming apparatus of claim 1, wherein: The hopper has symmetrical second guide shafts on both sides. The bottom of the second guide shaft is fixed on the base, and the top of the second guide shaft is placed in the second sleeve. The second sleeve is fixed to the hopper.

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