Extrusion device for PPR pipe machining

Abstract

The utility model discloses an extrusion device for processing a PPR (polypropylene random copolymer) pipe, which comprises a bottom plate, wherein a fixed bracket is arranged above the bottom plate; a hot-melt extrusion mechanism is arranged at the upper end of the fixed support, a feeding mechanism is arranged above the hot-melt extrusion mechanism, and supporting seats are arranged on one side of the fixed support side by side; a speed reducer and a driving motor are arranged at the upper end of the supporting seat, and the output end of the speed reducer is connected with the input end of the hot-melt extrusion mechanism. According to the utility model, through the optimal design of the feeding mechanism and the hot-melt extrusion mechanism, raw materials are ensured to be uniformly mixed before being conveyed to the extrusion mechanism, and the precipitation phenomenon of the raw materials in the conveying process is effectively prevented, so that the quality stability of PPR pipes is improved; by means of the automatic feeding mechanism, the manual feeding frequency is reduced, the labor intensity is reduced, meanwhile, continuous and stable supply of raw materials is guaranteed, the extrusion device can operate continuously and efficiently, the production efficiency is remarkably improved, the labor cost is reduced, and the operation convenience is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of PPR pipe processing, in particular to an extrusion device for PPR pipe processing. Background Art

[0002] PPR is the abbreviation of type III polypropylene, also known as random copolymer polypropylene pipe. It adopts hot welding method, has special welding and cutting tools, and has high plasticity. It is moderately priced, has stable performance, is heat-resistant and heat-insulating, corrosion-resistant, and has a smooth inner wall without scaling. Therefore, it is widely used in drainage, heating and other fields. Existing PPR pipes require the use of extrusion equipment in processing and production.

[0003] During the processing and production of PPR pipes, the raw materials need to be mixed before being injected into the extrusion device. In the process of transporting the raw materials to the extrusion device after mixing, precipitation is prone to occur due to the influence of physical properties. This problem directly leads to the uneven quality of the final pipe products. In addition, in order to ensure the continuous and stable operation of the production line, raw materials need to be continuously replenished. This link often relies on frequent manual operations, which not only greatly increases labor costs, but also limits the improvement of production efficiency, making the overall operation process cumbersome and inefficient. Summary of the Invention

[0004] The purpose of the present invention is to provide an extrusion device for processing PPR pipes to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A PPR pipe processing extrusion device comprises a base plate, wherein a fixed bracket is provided above the base plate; the lower end of the fixed bracket is fixedly connected to the base plate, wherein a hot melt extrusion mechanism is provided at the upper end of the fixed bracket; a support seat is provided side by side on one side of the fixed bracket, wherein the lower end of the support seat is fixedly connected to the base plate; a reducer is provided at the upper end of the support seat, wherein the input end of the reducer is connected to a drive motor, and the output end of the reducer is connected to the input end of the hot melt extrusion mechanism; a feeding mechanism is provided above the hot melt extrusion mechanism, wherein the discharge end of the feeding mechanism is connected to the feed end of the hot melt extrusion mechanism.

[0007] Preferably, the hot melt extrusion mechanism includes a shell, wherein the shell is arranged above the fixed bracket; a heating extrusion barrel is provided inside the shell, wherein the heating extrusion barrel is arranged horizontally; a feed barrel is provided at the feed end of the heated extrusion barrel, wherein an extrusion die head is provided at the discharge end of the heated extrusion barrel; a plurality of groups of heating components are sleeved on the outer wall of the heated extrusion barrel, wherein the plurality of groups of heating components are equidistantly arranged along the axial direction of the heated extrusion barrel; an extrusion screw is provided in the inner cavity of the heated extrusion barrel, wherein one end of the extrusion screw passes through the feed barrel and extends outward to be fixedly connected to the output end of the reducer.

[0008] Preferably, the feed end of the heated extrusion barrel is connected to one end of the feed barrel through a flange, wherein the other end of the feed barrel is fixedly connected to the inner wall of the fixed bracket through a flange; the discharge end of the heated extrusion barrel is connected to the feed end of the extrusion die through a flange, wherein the feed end of the extrusion die is provided with a filter.

[0009] Preferably, the heating assembly includes a first heating cover and a second heating cover, wherein the first heating cover and the second heating cover are semicircular structures; the first heating cover is movably connected to the second heating cover on one side by a hinge, wherein the first heating cover and the second heating cover are connected on the other side by a buckle lock; the inner walls of the first heating cover and the second heating cover are respectively provided with heating wires, wherein the first heating cover and the second heating cover are connected to form a cylindrical heating chamber.

[0010] Preferably, the feeding mechanism includes a tubular screw conveyor, wherein the tubular screw conveyor is fixedly connected to the upper end of the shell through a mounting frame; the feed end of the tubular screw conveyor is provided with a mixing box, wherein the discharge end of the tubular screw conveyor is connected to a discharge pipe, and the discharge pipe passes downward through the top of the shell and is connected to the feed barrel.

[0011] Preferably, a cover plate is provided at the upper end of the mixing box, wherein a material injection port is opened on the cover plate; a stirring motor is provided in the middle of the cover plate, wherein the output shaft of the stirring motor passes through the cover plate and is fixedly connected to the stirring shaft, and the stirring shaft is provided with stirring blades.

[0012] Preferably, a discharge port is provided at the lower end of the mixing box, wherein the discharge port is connected to the feed end of the tubular screw conveyor; a flow control valve is provided between the feed end of the tubular screw conveyor and the discharge port at the lower end of the mixing box.

[0013] Preferably, the side wall of the feed barrel is provided with a feed hopper connected thereto, wherein the feed end of the feed hopper is connected to the discharge port of the discharge pipe.

[0014] Compared with the existing technology, the beneficial effects of the present invention are as follows: the present invention ensures that the raw materials are evenly mixed before being conveyed to the extrusion mechanism through the optimized design of the feeding mechanism and the hot melt extrusion mechanism, effectively preventing the sedimentation of the raw materials during the conveying process, thereby improving the quality stability of the PPR pipe; the automated feeding mechanism reduces the frequency of manual loading and reduces labor intensity, while ensuring a continuous and stable supply of raw materials, so that the extrusion device can operate continuously and efficiently, significantly improving production efficiency; the heating component adopts a detachable heating cover design, which is convenient for maintenance and replacement of the heating wire, reducing maintenance costs and time; at the same time, the setting of the flow control valve makes the raw material delivery amount adjustable, enhancing the flexibility of the production process; the overall device structure is reasonably designed, and the components are tightly connected, ensuring the stability and reliability of the equipment during operation; it effectively solves the problems existing in traditional PPR pipe processing and extrusion devices, improves product quality and production efficiency, reduces labor costs, enhances operation convenience, and provides strong support for the large-scale production of PPR pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1a 、 1b It is a structural diagram of the utility model;

[0016] Figure 2 It is a structural diagram of the hot melt extrusion mechanism of the utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the hot melt extrusion mechanism of the utility model;

[0018] Figure 4 It is a structural diagram of the heating component of the utility model;

[0019] Figure 5 It is a structural diagram of the feeding mechanism of the utility model;

[0020] Figure 6 It is a structural diagram of the stirring motor of the utility model.

[0021] 1. Bottom plate; 2. Fixed bracket; 3. Hot melt extrusion mechanism; 301. Shell; 302. Heating extrusion barrel; 303. Feed barrel; 304. Extrusion die; 305. Heating assembly; 3051. First heating cover; 3052. Second heating cover; 3053. Hinge; 3054. Buckle lock; 3055. Heating wire; 3056. Heating chamber; 306. Extrusion screw; 4. Support base; 5. Reducer; 6. Drive motor; 7. Feeding mechanism; 701. Tubular screw conveyor; 702. Mounting frame; 703. Mixing box; 704. Discharge pipe; 705. Flow control valve; 8. Cover plate; 9. Injection port; 10. Stirring motor; 11. Stirring shaft; 12. Stirring blade; 13. Feed hopper. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below with reference to the accompanying drawings.

[0023] Please refer to Figures 1 to Figure 6 To achieve the above objectives, the present invention provides the following technical solutions:

[0024] A PPR pipe processing extrusion device includes a base plate 1, wherein a fixed bracket 2 is provided above the base plate 1; the lower end of the fixed bracket 2 is fixedly connected to the base plate 1, wherein a hot melt extrusion mechanism 3 is provided at the upper end of the fixed bracket 2; a support seat 4 is provided side by side on one side of the fixed bracket 2, wherein the lower end of the support seat 4 is fixedly connected to the base plate 1; a reducer 5 is provided at the upper end of the support seat 4, wherein the input end of the reducer 5 is connected to a drive motor 6, and the output end of the reducer 5 is connected to the input end of the hot melt extrusion mechanism 3; a feeding mechanism 7 is provided above the hot melt extrusion mechanism 3, wherein the discharge end of the feeding mechanism 7 is connected to the feed end of the hot melt extrusion mechanism 3.

[0025] Start the feeding mechanism 7, and feed the PPR raw material evenly and continuously into the feed end of the hot melt extrusion mechanism 3 through the tubular screw conveyor 701 inside it; during this process, the feeding mechanism 7 needs to accurately control the supply amount of the raw material to ensure the stability and continuity of the subsequent extrusion process; after the raw material enters the hot melt extrusion mechanism 3, it first passes through the preheating zone, where the raw material begins to soften and gradually heats up to a molten state; the molten PPR material is then fed into the extrusion zone, where the extrusion screw 306 driven by the reducer 5 applies pressure to the molten material, forcing it to pass through the die channel of a specific extrusion die 304. The shape and size of the extrusion die 304 determine the cross-sectional shape and size of the final extruded PPR pipe; during the extrusion process, the temperature and pressure inside the hot melt extrusion mechanism 3 need to be strictly controlled to ensure that the quality and performance of the PPR pipe meet the requirements.

[0026] Please refer to Figure 2 、 Figure 3 As an embodiment of the present invention, the hot melt extrusion mechanism 3 includes a shell 301, wherein the shell 301 is arranged above the fixed bracket 2 and fixedly connected thereto; a heating extrusion cylinder 302 is provided inside the shell 301, wherein the heating extrusion cylinder 302 is arranged horizontally; a feeding end of the heating extrusion cylinder 302 is provided with a feeding cylinder 303, wherein the discharging end of the heating extrusion cylinder 302 is provided with an extrusion die head 304; the outer wall of the heating extrusion cylinder 302 is provided with multiple groups of heating components 305, wherein the multiple groups of heating components 305 are equidistantly arranged along the axial direction of the heating extrusion cylinder 302; an extrusion screw 306 is provided in the inner cavity of the heating extrusion cylinder 302, wherein one end of the extrusion screw 306 passes through the feeding cylinder 303 and extends outward to be fixedly connected to the output end of the reducer 5.

[0027] In the above scheme, the hot melt extrusion mechanism 3 is fixed on the fixed bracket 2 through the shell 301 to ensure its stability during operation; the heated extrusion barrel 302 is horizontally arranged in the shell 301 to provide necessary space for heating and extruding the PPR raw material; one end of the extrusion screw 306 is fixedly connected to the output end of the reducer 5, and the synergistic action of the drive motor 6 and the reducer 5 provides stable rotational power for the extrusion screw 306; when the feeding mechanism 7 starts working, the PPR raw material is continuously and evenly fed into the feeding end of the heated extrusion barrel 302, wherein the feeding barrel 303 serves as a transition part to ensure that the raw material can smoothly enter the heated extrusion barrel 302; the multiple groups of heating components 305 sleeved on the outer wall of the heated extrusion barrel 302 start working, and the heating components 305 equidistantly arranged along the axial direction can evenly heat the heated extrusion barrel 302, so that the PPR raw material entering the barrel gradually heats up and softens, and finally reaches a molten state; the temperature control of the heating component 305 needs to be precise, so that Ensure that the PPR raw material will not degrade or over-oxidize during the melting process, which will affect the quality of the pipe; the molten PPR material is subjected to the rotating extrusion screw 306 in the heated extrusion barrel 302. The rotation of the extrusion screw 306 not only pushes the raw material forward, but also applies shear force and pressure to the raw material through its threaded structure, so that it is further mixed and compacted; as the extrusion screw 306 rotates, the molten PPR material is gradually pushed toward the extrusion die 304, wherein the extrusion die 304 has a specific shape and size, which determines the cross-sectional shape and size of the final extruded PPR pipe; due to the limitation of the die and the continuous extrusion of the extrusion screw 306, the material is forced to be extruded from the channel of the die to form a continuous PPR pipe. After leaving the die, the extruded PPR pipe needs to be immediately cooled and shaped; according to the actual production situation, the heating power of the heating component 305, the speed of the extrusion screw 306 and other parameters are adjusted in time to optimize the extrusion effect and improve the quality of the pipe.

[0028] See also Figure 3 As an embodiment of the present invention, the feed end of the heated extrusion cylinder 302 is connected to one end of the feed cylinder 303 through a flange, wherein the end of the feed cylinder away from the heated extrusion cylinder 302 is fixedly connected to the inner wall of the fixed bracket 2 through a flange, wherein the fixed bracket 2 is provided with a through hole connected to the feed cylinder 303; the discharge end of the heated extrusion cylinder 302 is connected to the feed end of the extrusion die 304 through a flange, wherein the feed end of the extrusion die 304 is provided with a filter (not shown).

[0029] In the above-described scheme, the feed end of the heated extrusion barrel 302 is tightly connected to one end of the feed barrel 303 through a flange. This connection method ensures that the raw materials can smoothly enter the heated extrusion barrel 302 from the feed barrel 303. At the same time, the sealing of the flange also prevents leakage of the raw materials during the transmission process; the other end of the feed barrel 303 is also fixedly connected to the inner wall of the fixed bracket 2 through the flange, thereby enhancing the stability of the entire feeding system; a through hole connected to the feed barrel 303 is provided on the fixed bracket 2, wherein the through hole facilitates the extrusion screw 306 to pass through the fixed bracket 2 and the feed barrel 303 and extend into the heated extrusion barrel 302; the discharge end of the heated extrusion barrel 302 is connected to the feed end of the extrusion die 304 through the flange. This design not only ensures that the molten plastic can smoothly enter the extrusion die 304 for molding, but also facilitates the replacement or maintenance of the extrusion die 304 when necessary. The feed end of the extrusion die 304 is provided with a filter screen for filtering out impurities in the molten plastic to ensure the quality of the extruded product.

[0030] Furthermore, the raw materials are fed into the heated extrusion barrel 302 through the feed barrel 303, wherein the design of the feed barrel 303 enables the raw materials to enter the heated extrusion barrel 302 smoothly and continuously, preparing for the subsequent heating and melting process; the multiple groups of heating components 305 arranged on the outer wall of the heated extrusion barrel 302 start to work, uniformly heating the raw materials in the heated extrusion barrel 302, and as the temperature rises, the raw materials gradually soften and reach a molten state; in this process, the heating power and temperature control of the heating components 305 need to be precisely adjusted to ensure that the raw materials can be fully melted without degradation or excessive oxidation; the molten plastic is extruded by the rotating extrusion screw 306 in the heated extrusion barrel 302 The molten plastic is pushed toward the extrusion die 304 by pressure; before reaching the extrusion die 304, the molten plastic is filtered through a filter to remove impurities and incompletely melted particles therein. This step is crucial to ensuring the quality and appearance of the extruded product; after the molten plastic passes through the filter and enters the extrusion die 304, it is formed into the desired cross-sectional shape and size under the action of the die, and the extruded plastic product then enters the cooling system for rapid cooling and shaping to maintain the stability of its shape and size; the heated extrusion barrel 302 and its related components ensure the smooth supply of raw materials, the uniform extrusion of the molten plastic, and the stable production of high-quality products through precise structural connections and stable work processes.

[0031] See also Figure 4As an embodiment of the present invention, the heating assembly 305 includes a first heating cover 3051 and a second heating cover 3052, wherein the first heating cover 3051 and the second heating cover 3052 are semicircular structures; the first heating cover 3051 and the second heating cover 3052 are movably connected on one side by a hinge 3053, wherein the first heating cover 3051 and the second heating cover 3052 are connected on the other side by a buckle lock 3054; the inner walls of the first heating cover 3051 and the second heating cover 3052 are respectively provided with heating wires 3055, wherein the first heating cover 3051 and the second heating cover 3052 are connected to form a cylindrical heating chamber 3056.

[0032] In the above scheme, the first heating cover 3051 is a semicircular structure, and the inner wall is provided with a heating wire 3055 for generating heat; the second heating cover 3052 is also a semicircular structure, and the inner wall is also provided with a heating wire 3055, corresponding to the first heating cover 3051; the first heating cover 3051 and the second heating cover 3052 are movably connected on one side by a hinge 3053, so that the two can rotate around the axis of the hinge 3053 for easy opening and closing; on the other side, the first heating cover 3051 and the second heating cover 3052 is fixedly connected by a hasp lock 3054. The design of the hasp lock 3054 ensures the stability and sealing of the heating cover in the closed state; when the first heating cover 3051 and the second heating cover 3052 are closed and locked by the hasp lock 3054, the two together form a cylindrical heating chamber 3056. This heating chamber 3056 is the core part of the heating component 305 and is used to heat the internal heating extrusion barrel 302; its opening and closing operation is convenient and flexible, easy to disassemble and assemble, and has strong applicability.

[0033] See also Figure 5 As an embodiment of the present invention, the feeding mechanism 7 includes a tubular screw conveyor 701, wherein the tubular screw conveyor 701 is fixedly connected to the upper end of the shell 301 through a mounting frame 702; a mixing box 703 is provided at the feed end of the tubular screw conveyor 701, wherein a discharge pipe 704 is provided at the discharge end of the tubular screw conveyor 701, and the discharge pipe 704 passes downward through the top of the shell 301 and is connected to the feed barrel 303; a discharge port is provided at the lower end of the mixing box 703, wherein the discharge port is connected to the feed end of the tubular screw conveyor 701; a flow control valve 705 is provided between the feed end of the tubular screw conveyor 701 and the discharge port at the lower end of the mixing box 703.

[0034] In the above-described scheme, the tubular screw conveyor 701 is firmly fixed to the upper end of the shell 301 by the mounting frame 702, ensuring its stability and reliability during operation; the mixing box 703 is used to store and preliminarily mix the raw materials, and the discharge port opened at its lower end is connected to the feed end of the tubular screw conveyor 701; before feeding begins, the raw materials are put into the mixing box 703, and the mixing box 703 is equipped with a stirring motor 10 for preliminary mixing to ensure the uniformity of the raw materials; a flow control valve 705 is provided between the discharge port at the lower end of the mixing box 703 and the feed end of the tubular screw conveyor 701. The function of this flow control valve 705 is to adjust the flow of raw materials entering the tubular screw conveyor 701 from the mixing box 703. By adjusting the opening of the flow control valve 705, the raw material conveying speed can be accurately controlled to meet the needs of subsequent processing equipment.

[0035] Furthermore, when the flow control valve 705 is opened, the raw materials in the mixing box 703 enter the feed end of the tubular screw conveyor 701 under the action of gravity, and the spiral blades inside the tubular screw conveyor 701 rotate under the drive of the motor, pushing the raw materials forward along the pipeline. In this process, the raw materials are not only transported to the designated position, but may also be further mixed evenly under the extrusion and friction of the spiral blades; the discharge end of the tubular screw conveyor 701 is provided with a discharge pipe 704, which passes downward through the top of the shell 301 and is connected to the feed barrel 303. Therefore, as the spiral blades rotate, the raw materials are continuously and stably transported to the feed barrel 303, and then enter the subsequent heated extrusion barrel 302. This continuous feeding method helps to ensure the continuity and stability of the production line.

[0036] Please refer to Figure 5 、 Figure 6 As an embodiment of the present invention, a cover plate 8 is provided at the upper end of the mixing box 703, wherein the cover plate 8 is provided with a material injection port 9; a stirring motor 10 is provided in the middle of the cover plate 8, wherein the output shaft of the stirring motor 10 passes through the cover plate 8 and is fixedly connected to a stirring shaft 11, and a stirring blade 12 is provided on the stirring shaft 11.

[0037] In the above-described scheme, a cover plate 8 is provided at the upper end of the mixing box 703, wherein the cover plate 8 is used to close the top of the mixing box 703 to prevent the material from splashing or overflowing during the mixing process; an injection port 9 is provided on the cover plate 8 for adding the raw materials to be mixed into the mixing box 703, and the design of the injection port 9 should facilitate the accurate delivery and rapid addition of the raw materials; a stirring motor 10 is installed in the middle of the cover plate 8, which serves as a driving source to provide power for the stirring shaft 11, wherein the output shaft of the stirring motor 10 passes through the cover plate 8 and is fixedly connected to the stirring shaft 11, ensuring that the stirring motor 10 can drive the stirring shaft 11 to rotate, and a plurality of stirring blades 12 are provided on the stirring shaft 11, which are used to stir and mix the materials in the mixing box 703 under the drive of the stirring motor 10.

[0038] Furthermore, before the mixing process begins, the raw materials to be mixed are fed one by one or simultaneously into the mixing box 703 through the injection port 9 on the cover plate 8. The amount of raw materials fed should be controlled according to production needs and process requirements. When the raw materials are fed, the stirring motor 10 is started, and the output shaft of the stirring motor 10 drives the stirring shaft 11 to start rotating, thereby driving the stirring blades 12 to rotate rapidly in the mixing box 703. The rotation of the stirring blades 12 generates strong shear force, extrusion force and convection motion, so that the materials in the mixing box 703 are fully mixed in three dimensions. During this process, the materials are continuously broken up and recombined until a uniform mixing state is achieved. After a period of stirring and mixing, the materials in the mixing box 703 will exhibit a uniform color, texture and particle distribution. At this time, the mixing process is completed and the materials have achieved the mixing effect required for production. After mixing is completed, the mixed materials can be discharged through the discharge port at the lower end of the mixing box 703 for subsequent processing. During the mixing process, the speed and stirring time of the stirring motor 10 can be adjusted as needed to obtain the best mixing effect and production efficiency.

[0039] Please refer to Figure 2 、 Figure 3 As an embodiment of the present invention, a feed hopper 13 is provided on the side wall of the feed barrel 303 and is connected thereto, wherein the feed end of the feed hopper 13 is connected to the discharge port of the discharge pipe 704 .

[0040] In the above-mentioned scheme, the upper end of the side wall of the feed barrel 303 is provided with a feed hopper 13 connected thereto. This design enables the feed hopper 13 to become a channel for the material to enter the feed barrel 303, ensuring that the material can smoothly enter the feed barrel 303 from the feed hopper 13. The feed end of the feed hopper 13 is closely connected with the discharge port of the discharge pipe 704. This connection method ensures that the material transported by the tubular screw conveyor 701 can directly and continuously enter the feed hopper 13 and then enter the feed barrel 303; the tubular screw conveyor 701 is driven by the motor to transport the material forward along the pipeline through its internal spiral blades. In this process, the material is pushed by the spiral blades and constrained by the inner wall of the pipeline, forming a stable material flow; when the tube When the screw conveyor 701 conveys the material to the discharge pipe 704, the discharge port of the discharge pipe 704 is connected to the feed end of the feed hopper 13, so that the material naturally falls into the feed hopper 13; the material temporarily accumulates in the feed hopper 13 and gradually enters the feed barrel 303 along with the connection port between the feed hopper 13 and the feed barrel 303. In this process, the feed hopper 13 plays the role of material buffering and guiding, ensuring that the material can enter the feed barrel 303 smoothly and orderly, and then enter the subsequent heated extrusion barrel 302. This continuous feeding method helps to ensure the continuity and stability of the production line, which helps to improve production efficiency and product quality, and reduce production delays and losses caused by poor or interrupted material transportation.

[0041] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of protection of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of protection of the present invention.

Claims

1. An extrusion device for processing PPR pipes, comprising a base plate (1), wherein a fixing bracket (2) is provided above the base plate (1); characterized in that: The lower end of the fixed bracket (2) is fixedly connected to the bottom plate (1), wherein the upper end of the fixed bracket (2) is provided with a hot melt extrusion mechanism (3); a support seat (4) is arranged side by side on one side of the fixed bracket (2), wherein the lower end of the support seat (4) is fixedly connected to the bottom plate (1); a reducer (5) is provided on the upper end of the support seat (4), wherein the input end of the reducer (5) is connected to the driving motor (6), and the output end of the reducer (5) is connected to the input end of the hot melt extrusion mechanism (3); a feeding mechanism (7) is provided above the hot melt extrusion mechanism (3), wherein the discharge end of the feeding mechanism (7) is connected to the feed end of the hot melt extrusion mechanism (3); the hot melt extrusion mechanism (3) includes a shell (301), wherein the shell (301) is arranged above the fixed bracket (2); a heating extrusion cylinder (302) is provided inside the shell (301), wherein the heating extrusion cylinder (302) is arranged horizontally; the feed end of the heating extrusion cylinder (302) is provided with a feeding cylinder (302). 03), wherein the discharge end of the heated extrusion barrel (302) is provided with an extrusion die head (304); the outer wall of the heated extrusion barrel (302) is provided with a plurality of heating components (305), wherein the plurality of heating components (305) are arranged equidistantly along the axial direction of the heated extrusion barrel (302); the inner cavity of the heated extrusion barrel (302) is provided with an extrusion screw (306), wherein one end of the extrusion screw (306) passes through the feed barrel (303) and extends outward to be fixed to the output end of the reducer (5) The feeding mechanism (7) includes a tubular screw conveyor (701), wherein the tubular screw conveyor (701) is fixedly connected to the upper end of the shell (301) through a mounting frame (702); a mixing box (703) is provided at the feeding end of the tubular screw conveyor (701), wherein the discharging end of the tubular screw conveyor (701) is connected to a discharging pipe (704), and the discharging pipe (704) passes downward through the top end of the shell (301) and is in communication with the feeding cylinder (303).

2. A PPR pipe processing extrusion device according to claim 1, characterized in that: The feed end of the heated extrusion cylinder (302) is connected to one end of the feed cylinder (303) via a flange, wherein the other end of the feed cylinder (303) is fixedly connected to the inner wall of the fixed bracket (2) via a flange; the discharge end of the heated extrusion cylinder (302) is connected to the feed end of the extrusion die (304) via a flange, wherein the feed end of the extrusion die (304) is provided with a filter.

3. A PPR pipe processing extrusion device according to claim 2, characterized in that: The heating assembly (305) comprises a first heating cover (3051) and a second heating cover (3052), wherein the first heating cover (3051) and the second heating cover (3052) are semicircular structures; one side of the first heating cover (3051) and the second heating cover (3052) are movably connected via a hinge (3053), wherein the other side of the first heating cover (3051) and the second heating cover (3052) are connected via a buckle lock (3054); the inner walls of the first heating cover (3051) and the second heating cover (3052) are respectively provided with heating wires (3055), wherein the first heating cover (3051) and the second heating cover (3052) are connected to form a cylindrical heating chamber (3056).

4. The extrusion device for processing PPR pipes according to claim 1, characterized in that: The upper end of the mixing box (703) is provided with a cover plate (8), wherein the cover plate (8) is provided with a material injection port (9); a stirring motor (10) is provided in the middle of the cover plate (8), wherein the output shaft of the stirring motor (10) passes through the cover plate (8) and is fixedly connected to a stirring shaft (11), and the stirring shaft (11) is provided with a stirring blade (12).

5. The extrusion device for processing PPR pipes according to claim 4, characterized in that: A discharge port is provided at the lower end of the mixing box (703), wherein the discharge port is connected to the feed end of the tubular screw conveyor (701), and a flow control valve (705) is provided between the feed end of the tubular screw conveyor (701) and the discharge port at the lower end of the mixing box (703).

6. The extrusion device for processing PPR pipes according to claim 1, characterized in that: The side wall of the feed cylinder (303) is provided with a feed hopper (13) in communication therewith, wherein the feed end of the feed hopper (13) is in communication with the discharge port of the discharge pipe (704).

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