Preparation device and process of plastic film material

Abstract

The invention provides a preparation device and process of a plastic film material, and belongs to the technical field of film material preparation, the preparation device comprises a workbench, an extrusion pipe, a pretreatment hopper, a feeding pipe, a plastic extrusion screw, a conical part, a driving mechanism, a reciprocating mechanism and a movable valve mechanism, the extrusion pipe is fixedly connected to the upper side of the workbench through a fixing frame; the pretreatment hopper is fixedly connected to the upper side of the extrusion pipe; the feeding pipe is fixedly connected to the surface of the pretreatment hopper, and the surface of the feeding pipe is fixedly connected with a feeding hopper for adding raw materials. The plastic extrusion screw is rotationally connected into the extrusion pipe, one end of the plastic extrusion screw is fixedly connected with a straight rod, and the straight rod slidably penetrates through the extrusion pipe and extends outwards; the conical part is fixedly connected to the other end of the extrusion tube; automatic quantitative conveying of raw materials is achieved, design can be conducted according to needs, the conveying amount of the materials can be accurately measured and controlled, and the stability and consistency of the production process are guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of film material preparation, and in particular relates to a preparation device and a process for a plastic film material. Background Art

[0002] Membrane materials are materials that can selectively separate or catalytically transfer substances. Their main characteristics are that they have microporous structures or surface active sites, and can achieve separation, transfer or conversion of substances through physical or chemical means. Membrane materials are widely used in the fields of construction, medicine, food, environmental protection, electronics, etc.

[0003] The prior art discloses a Chinese patent with application number CN202122377136.2, which discloses a surface film material preparation device, and relates to the field of surface film material processing technology. In view of the problem that a large amount of raw materials of the existing surface film will stick to the inner wall of the stirring container during preparation, which is not easy to discharge and difficult to clean, and the mixing efficiency of the raw materials is not high, the following scheme is proposed, including a stirring tank, a top cover is provided at the top of the stirring tank, a stirring mechanism is installed on the stirring tank, a feed valve is installed on one side of the top of the top cover, a feed hopper is connected to the top of the feed valve, a high-pressure air pump is installed on the other side of the top of the top cover, and an outlet pipe is connected to the outlet end of the high-pressure air pump. In the utility model, a motor is used to drive the rotating rod and the stirring frame to rotate, so that the raw materials are stirred, and the scraper rotates along the inner wall of the stirring tank, thereby effectively reducing the raw materials from sticking to the inner wall of the stirring tank, and the stirring tank is heated by an electric heating wire, which can improve the mixing efficiency of the raw materials and effectively improve the discharge speed.

[0004] Existing membrane materials are usually made by mixing and melting a variety of plastic particles, including solution method, CVD method, vacuum evaporation method, sputtering method and template method. Different preparation methods are suitable for different materials and requirements. Choosing a suitable method can obtain a thin film material with excellent performance. However, the raw materials need to be continuously output during extrusion, which is difficult to output quantitatively according to needs. Manual assistance is required, or the discharge valve needs to be designed. The discharge valve may cool down near the outlet, and the material cools and solidifies, causing blockage. For this reason, we propose a preparation device and process for membrane materials. Summary of the invention

[0005] The object of the present invention is to provide a device for preparing a plastic film material and a process thereof, aiming to solve the problems in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solutions: A device for preparing a plastic film material, comprising: Workbench; An extrusion tube is fixedly connected to the upper side of the workbench through a fixing frame; A pre-treatment bucket fixedly connected to the upper side of the extrusion tube; A feeding pipe, which is fixedly connected to the surface of the pretreatment bucket, and a feeding hopper is fixedly connected to the surface of the pretreatment bucket for adding raw materials; A plastic extrusion screw, which is rotatably connected in the extrusion tube, and one end of which is fixedly connected to a straight rod, which slides through the extrusion tube and extends outward; a tapered portion fixedly connected to the other end of the extruded tube; A driving mechanism is arranged on the workbench and is used to drive the plastic extrusion screw to rotate so as to convey and compress the raw materials; A reciprocating mechanism, which is arranged on the straight rod and is used to control the reciprocating movement of the plastic extrusion screw to quantitatively transport the raw materials; and The movable valve mechanism is arranged in the conical part and intermittently conveys the material by following the reciprocating movement of the plastic extrusion screw.

[0007] As a preferred solution of the present invention, the driving mechanism includes an extension rod, a third motor and a sleeve, the extension rod is fixedly connected to the end of the straight rod, the third motor is fixedly connected to the top of the workbench, the sleeve is fixedly connected to the output end of the third motor, and the third motor is slidably connected in the sleeve.

[0008] As a preferred solution of the present invention, the reciprocating mechanism includes a guide ring, a bearing frame, a guide rod, a limit rod and a cylinder and a fourth motor. The bearing frames are provided with two and are fixedly connected to the top of the workbench. The limit rod is fixedly connected between the two bearing frames. The sleeve is slidably connected to the surface of the limit rod. The circumferential surface of the straight rod is provided with a mounting groove. The guide ring is rotatably connected in the mounting groove. The cylinder is rotatably connected between the two bearing frames. The guide rod is fixedly connected to the bottom of the guide ring. The circumferential surface of the cylinder is provided with a circulation groove. The guide rod is slidably connected in the circulation groove. The fourth motor is fixedly connected to the top of the workbench, and the cylinder is fixedly connected to the output end of the fourth motor.

[0009] As a preferred solution of the present invention, the movable valve mechanism includes an inner cavity and a ball valve, the inner cavity is opened in the conical portion, the ball valve is slidably connected in the inner cavity, a first channel is opened on the side of the inner cavity close to the pretreatment bucket, and a second channel is opened on the conical surface of the inner cavity, and the first channel and the second channel are both connected to the inner cavity.

[0010] As a preferred solution of the present invention, a first rubber ring is fixedly connected to the surface of the tapered portion, and a second rubber ring is fixedly connected to the extrusion tube near the straight rod.

[0011] As a preferred solution of the present invention, a first motor is fixedly connected to the bottom of the feeding tube, a screw conveyor is rotatably connected inside the feeding tube, and the screw conveyor is fixedly connected to the output end of the first motor.

[0012] As a preferred solution of the present invention, a second motor is fixedly connected to the top of the pretreatment bucket, a stirring blade is rotatably connected inside the pretreatment bucket, and the stirring blade is fixedly connected to the output end of the second motor.

[0013] As a preferred solution of the present invention, a heat exchange tube is fixedly connected to the circumferential surface of the extruded tube, and a liquid inlet and a liquid outlet are provided on the surface of the heat exchange tube.

[0014] As a preferred solution of the present invention, a heat exchanger is fixedly connected inside the workbench, a heater is fixedly connected to the side of the heat exchanger, and a first pipe and a second pipe are fixedly connected between the heat exchanger and the liquid inlet and the liquid outlet, respectively.

[0015] A method for using a device for preparing a plastic film material comprises the following steps: S1, placing the raw material in the feed hopper, and the raw material enters the feeding pipe from the feed hopper, and the first motor drives the screw conveyor to rotate, and then the screw conveyor is transported to the pre-treatment bucket; S2, after the raw materials enter the pretreatment bucket, the output end of the second motor drives the stirring blade to rotate, and the raw materials in the pretreatment bucket are continuously stirred to make the raw materials mixed more evenly; S3, the mixed material enters the extrusion tube from the pretreatment bucket, and the sleeve is driven to rotate by the output end of the third motor, the sleeve drives the extension rod to rotate, the extension rod drives the straight rod to rotate, and finally drives the plastic extrusion screw to rotate. The material is extruded by the plastic extrusion screw and heated by the heat exchange cylinder, and the raw material forms a liquid and flows in the extrusion tube; S4, the raw material enters the inner cavity through the first channel, then flows out through the second channel, and finally is extruded from the outlet of the extrusion tube to complete the discharge; S5. During the flow of raw materials, the cylinder is driven to rotate through the output end of the fourth motor. Under the limitation of the circulation groove and the limit rod, the guide rod and the guide ring move back and forth in a straight line, thereby driving the straight rod, the plastic extrusion screw and the tapered part to move back and forth in a straight line synchronously. When the tapered part moves toward the pretreatment bucket, the ball valve moves toward the second channel. At this time, the raw materials can flow through the first channel, the inner cavity and the second channel. When the tapered part moves toward the outlet, the ball valve blocks the entrance of the first channel, which can interrupt the flow of the raw materials. According to the continuous rotation of the cylinder, the raw materials can be quantitatively output.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In this scheme, when it is necessary to output the raw materials quantitatively, the fourth motor is started when the plastic extrusion screw rotates, and the cylinder is driven to rotate through the output end of the fourth motor. Under the limitation of the circulation groove and the limit rod, the guide rod and the guide ring move back and forth linearly, thereby driving the straight rod, the plastic extrusion screw and the tapered part to move synchronously back and forth linearly. When the tapered part moves toward the pretreatment bucket, the ball valve moves toward the second channel. At this time, the raw materials can flow through the first channel, the inner cavity and the second channel. When the tapered part moves toward the outlet, the ball valve blocks the entrance of the first channel, which can interrupt the flow of raw materials. According to the continuous rotation of the cylinder, the raw materials can be quantitatively output, and automatic quantitative delivery of raw materials can be realized. It can be designed according to needs, and can accurately measure and control the delivery amount of materials to ensure the stability and consistency of the production process, which helps to reduce the downtime and adjustment time in the production process, thereby improving the overall production efficiency, avoiding excessive or insufficient situations, thereby reducing the waste and cost of raw materials, and can reduce the errors caused by human factors and improve product quality.

[0017] 2. In this solution, the stirring blade is driven by the second motor to rotate to stir the raw materials. Stirring can fully mix different raw materials together so that the various raw materials are more evenly distributed. This uniform distribution can ensure that the quality of the final product is more stable and avoid performance differences caused by uneven material distribution.

[0018] 3. In this solution, the heat exchange liquid enters the heat exchange cylinder through the first pipe and the liquid inlet, and then returns to the heat exchanger through the liquid outlet and the second pipe. After the continuous circulation of the liquid exchange, the surface of the extrusion tube can be continuously heated, thereby accelerating the melting of the raw materials. During the extrusion process, the raw materials need to go through the plasticization and melting stages to form a molten parison. The heating structure can effectively increase the temperature of the raw materials to reach the temperature range required for plasticization, provide constant heating energy, and ensure that the machine can operate efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0020] In the attached picture: Figure 1 A perspective view of the present invention; Figure 2 is a side view of the present invention; Figure 3 is a cross-sectional view of the present invention; Figure 4 is a side sectional view of the present invention; Figure 5 For the present invention Figure 4 A magnified image; Figure 6It is a structural diagram of the extruded tube of the present invention; Figure 7 For the present invention Figure 6 Exploded diagram of Figure 8 It is a reciprocating mechanism diagram of the present invention; Fig. 9 For the present invention Figure 8 Exploded diagram of Fig.10 It is a diagram of the heating mechanism of the present invention.

[0021] Explanation of the numbers in the figure: 1. workbench; 2. fixed frame; 3. extrusion tube; 4. pretreatment bucket; 5. feeding tube; 6. feeding hopper; 7. first motor; 8. screw conveyor; 9. second motor; 10. stirring blade; 11. plastic extrusion screw; 12. tapered part; 13. first rubber ring; 14. second rubber ring; 15. inner cavity; 16. ball valve; 17. first channel; 18. second channel; 19. straight rod; 20. mounting groove; 21. extension rod; 22. third motor; 23. sleeve; 24. guide ring; 25. bearing frame; 26. guide rod; 27. limit rod; 28. cylinder; 29. ​​circulation groove; 30. fourth motor; 31. heat exchange cylinder; 32. liquid inlet; 33. liquid outlet; 34. first pipeline; 35. second pipeline; 36. heater; 37. heat exchanger. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-Figure 10 , the technical solution provided by this embodiment is as follows: A preparation device for plastic film material comprises a workbench 1, an extrusion tube 3, a pretreatment bucket 4, a feeding tube 5, a plastic extrusion screw 11, a tapered portion 12, a driving mechanism, a reciprocating mechanism and a movable valve mechanism, wherein: the extrusion tube 3 is fixedly connected to the upper side of the workbench 1 through a fixed frame 2; the pretreatment bucket 4 is fixedly connected to the upper side of the extrusion tube 3; the feeding tube 5 is fixedly connected to the surface of the pretreatment bucket 4, and a feeding hopper 6 is fixedly connected to the surface of the pretreatment bucket 4 to add raw materials; the plastic extrusion screw 11 is rotatably connected to the extrusion tube 3, one end of which is fixedly connected to a straight rod 19, which slides through the extrusion tube 3 and extends outward; the tapered portion 12 is fixedly connected to the other end of the extrusion tube 3; the driving mechanism is arranged on the workbench 1, which is used to drive the plastic extrusion screw 11 to rotate to convey and compress the raw materials; the reciprocating mechanism is arranged on the straight rod 19, which is used to control the reciprocating movement of the plastic extrusion screw 11 to quantitatively convey the raw materials; the movable valve mechanism is arranged in the tapered portion 12, which intermittently conveys the material by following the reciprocating movement of the plastic extrusion screw 11.

[0024] In a specific embodiment of the present invention, the fixing frame 2 is fixed to the top of the workbench 1 by bolts, the extrusion tube 3 is fixed in the fixing frame 2, the pretreatment bucket 4 is located on the upper side of the extrusion tube 3, and is used to pretreatment the raw materials. The feeding pipe 5 is obliquely installed on the side of the pretreatment bucket 4. When in use, the raw materials are added from the feeding hopper 6, and the first motor 7 drives the screw conveyor 8 to rotate. The screw conveyor 8 conveys the raw materials into the pretreatment bucket 4, and then the second motor 9 drives the stirring blade 10 to rotate to stir the raw materials. The stirring can fully mix different raw materials together, so that various raw materials are more evenly distributed. This uniform distribution can ensure that the quality of the final product is more stable and avoid performance differences caused by uneven material distribution. The mixed materials enter the plastic extrusion screw 11 and rotate through the sleeve 23. When the plastic extrusion screw 11 rotates in the spiral direction, the raw materials are gradually compressed and heated by the heat exchange cylinder 31. Finally, they are heated, softened and melted into a thermoplastic fluid. After the thermoplastic fluid is heated, melted and compressed, the pressure continues to increase until it is extruded from the outlet by the extrusion tube 3, completing the discharge preparation, and can continue to work and transport the preparation. When the raw material needs to be quantitatively output, the fourth motor 30 is started when the plastic extrusion screw 11 rotates, and the cylinder 28 is driven to rotate through the output end of the fourth motor 30. Under the limitation of the circulation groove 29 and the limiting rod 27, the guide rod 26 and the guide ring 24 reciprocate linearly, thereby driving the straight rod 19, the plastic extrusion screw 11 and the tapered portion 12 to synchronously reciprocate linearly. When the tapered portion 12 moves toward the pre-treatment bucket 4, the ball valve 16 moves toward the second channel 18. At this time, the raw material can flow through the first channel 17, the inner cavity 15 and the second channel 18. When the part 12 moves toward the outlet, the ball valve 16 blocks the entrance of the first channel 17, which can interrupt the flow of raw materials. According to the continuous rotation of the cylinder 28, the raw materials can be quantitatively output, and automatic quantitative transportation of raw materials can be realized. It can be designed according to needs, and can accurately measure and control the material transportation volume to ensure the stability and consistency of the production process, which helps to reduce the downtime and adjustment time in the production process, thereby improving the overall production efficiency, avoiding excess or insufficient situations, thereby reducing the waste and cost of raw materials, and can reduce errors caused by human factors and improve product quality.

[0025] Specifically, the driving mechanism includes an extension rod 21, a third motor 22 and a sleeve 23. The extension rod 21 is fixedly connected to the end of the straight rod 19, the third motor 22 is fixedly connected to the top of the workbench 1, the sleeve 23 is fixedly connected to the output end of the third motor 22, and the third motor 22 is slidably connected in the sleeve 23.

[0026] In a specific embodiment of the present invention, the extension rod 21 has a polygonal structure and can slide linearly in the sleeve 23. The plastic extrusion screw 11, the tapered portion 12, the mounting groove 20 and the extension rod 21 are an integral structure. The sleeve 23 is driven to rotate by the output end of the third motor 22. The sleeve 23 drives the extension rod 21 to rotate, and the extension rod 21 drives the straight rod 19 to rotate, thereby driving the plastic extrusion screw 11 and the tapered portion 12 to rotate. The plastic extrusion screw 11 is used to rotate and convey the compressed raw materials. The plastic extrusion screw 11 has a smooth surface near the pretreatment bucket 4, and the raw materials will not enter the space on the side of the extrusion tube 3 near the third motor 22.

[0027] Specifically, the reciprocating mechanism includes a guide ring 24, a bearing frame 25, a guide rod 26, a limit rod 27, a cylinder 28 and a fourth motor 30. Two bearing frames 25 are provided and are fixedly connected to the top of the workbench 1. The limit rod 27 is fixedly connected between the two bearing frames 25. The sleeve 23 is slidably connected to the surface of the limit rod 27. The circumferential surface of the straight rod 19 is provided with a mounting groove 20. The guide ring 24 is rotatably connected in the mounting groove 20. The cylinder 28 is rotatably connected between the two bearing frames 25. The guide rod 26 is fixedly connected to the bottom of the guide ring 24. The circumferential surface of the cylinder 28 is provided with a circulation groove 29. The guide rod 26 is slidably connected in the circulation groove 29. The fourth motor 30 is fixedly connected to the top of the workbench 1, and the cylinder 28 is fixedly connected to the output end of the fourth motor 30.

[0028] In a specific embodiment of the present invention, the bearing frame 25 is used to support the rotation of the cylinder 28, the limit rod 27 is used to limit the linear movement of the guide rod 26, the guide ring 24 is installed in the installation groove 20, and the straight rod 19 can rotate in the guide ring 24. During operation, the cylinder 28 is driven to rotate by the output end of the fourth motor 30, and the circulation groove 29 rotates with the cylinder 28. Since the guide rod 26 is always located in the circulation groove 29, when the circulation groove 29 moves, it can drive the guide rod 26 and the guide ring 24 to move back and forth linearly on the limit rod 27, and then drive the straight rod 19 to move back and forth linearly, and finally drive the plastic extrusion screw 11 and the tapered portion 12 to move back and forth linearly.

[0029] Specifically, the movable valve mechanism includes an inner cavity 15 and a ball valve 16. The inner cavity 15 is opened in the conical portion 12. The ball valve 16 is slidably connected in the inner cavity 15. A first channel 17 is opened on the side of the inner cavity 15 close to the pretreatment bucket 4. A second channel 18 is opened on the conical surface of the inner cavity 15. Both the first channel 17 and the second channel 18 are connected to the inner cavity 15.

[0030] In a specific embodiment of the present invention, see Figure 4 and Figure 5The ball valve 16 is located in the inner cavity 15. When the ball valve 16 is close to the tip of the tapered portion 12, the first channel 17, the inner cavity 15 and the second channel 18 constitute a channel, and the raw material can flow through the channel. During the flow of the raw material, the cylinder 28 is driven to rotate by the output end of the fourth motor 30. Under the limitation of the circulation groove 29 and the limit rod 27, the guide rod 26 and the guide ring 24 move back and forth linearly, thereby driving the straight rod 19, the plastic extrusion screw 11 and the tapered portion 12 to move synchronously back and forth linearly. When the tapered portion 12 moves toward the pretreatment bucket 4, the ball valve 16 moves toward the second channel 18. At this time, the raw material can flow through the first channel 17, the inner cavity 15 and the second channel 18. When the tapered portion 12 moves toward the outlet, the ball valve 16 blocks the entrance of the first channel 17, which can interrupt the flow of the raw material. According to the continuous rotation of the cylinder 28, the raw material can be quantitatively output.

[0031] Specifically, a first rubber ring 13 is fixedly connected to the surface of the tapered portion 12 , and a second rubber ring 14 is fixedly connected to the extrusion tube 3 near the straight rod 19 .

[0032] In a specific embodiment of the present invention, referring to the first motor 7, the first rubber ring 13 is close to the outlet of the extrusion tube 3, and the second rubber ring 14 is located at one end of the plastic extrusion screw 11 close to the straight rod 19. The first rubber ring 13 is provided to limit the raw material from flowing through the gap between the tapered portion 12 and the extrusion tube 3, thereby ensuring the normal operation of the ball valve mechanism. The second rubber ring 14 is located between the raw material inlet of the extrusion tube 3 and the straight rod 19, thereby preventing the raw material from entering the raw material and flowing in the reverse direction.

[0033] Specifically, a first motor 7 is fixedly connected to the bottom of the feeding tube 5 , a screw conveyor 8 is rotatably connected inside the feeding tube 5 , and the screw conveyor 8 is fixedly connected to the output end of the first motor 7 .

[0034] In a specific embodiment of the present invention, see Figure 3 The screw conveyor 8 is obliquely arranged in the feeding pipe 5 , and the feeding pipe 5 is driven to rotate by the output end of the first motor 7 , so that the raw materials can flow in the feeding pipe 5 and then enter the pretreatment bucket 4 .

[0035] Specifically, the top of the pre-processing bucket 4 is fixedly connected with a second motor 9 , and a stirring blade 10 is rotatably connected inside the pre-processing bucket 4 , and the stirring blade 10 is fixedly connected to the output end of the second motor 9 .

[0036] In a specific embodiment of the present invention, a valve is provided at the connection between the pretreatment bucket 4 and the inlet of the extrusion tube 3. In the initial state, the valve is in a closed state. After the raw materials enter the pretreatment bucket 4, the stirring blade 10 is driven to rotate by the output end of the second motor 9 to stir the raw materials. The stirring can fully mix the different raw materials together so that the various raw materials are more evenly distributed. This uniform distribution can ensure that the quality of the final product is more stable and avoid performance differences caused by uneven material distribution.

[0037] Specifically, a heat exchange cylinder 31 is fixedly connected to the circumferential surface of the extruded tube 3, a liquid inlet 32 ​​and a liquid outlet 33 are provided on the surface of the heat exchange cylinder 31, a heat exchanger 37 is fixedly connected inside the workbench 1, a heater 36 is fixedly connected to the side of the heat exchanger 37, and a first pipe 34 and a second pipe 35 are fixedly connected between the heat exchanger 37 and the liquid inlet 32 ​​and the liquid outlet 33, respectively.

[0038] In a specific embodiment of the present invention, heat exchange liquid is stored in the heat exchanger 37, and the heater 36 is used to heat the heat exchange liquid. The heat exchange liquid enters the heat exchange cylinder 31 through the first pipe 34 and the liquid inlet 32, and then returns to the heat exchanger 37 through the liquid outlet 33 and the second pipe 35. Through the continuous circulation of the liquid exchange, the surface of the extrusion tube 3 can be continuously heated, thereby accelerating the melting of the raw material. During the extrusion process, the raw material needs to go through plasticization and melting stages to form a molten parison. The heating structure can effectively increase the temperature of the raw material to reach the temperature range required for plasticization, provide a constant heating energy source, and ensure that the machine can operate efficiently.

[0039] A method for using a device for preparing a plastic film material comprises the following steps: S1, placing the raw material in the feed hopper 6, entering the feeding pipe 5 from the feed hopper 6, driving the screw conveyor 8 to rotate through the first motor 7, and then conveying the raw material to the pre-treatment hopper 4 by the screw conveyor 8; S2, after the raw materials enter the pre-treatment bucket 4, the output end of the second motor 9 drives the stirring blade 10 to rotate, and continuously stirs the raw materials in the pre-treatment bucket 4 to make the raw materials mixed more evenly; S3, the mixed material enters the extrusion tube 3 from the pretreatment bucket 4, and the sleeve 23 is driven to rotate by the output end of the third motor 22, the sleeve 23 drives the extension rod 21 to rotate, the extension rod 21 drives the straight rod 19 to rotate, and finally drives the plastic extrusion screw 11 to rotate, and the raw material is transported and extruded by the plastic extrusion screw 11 and heated by the heat exchange cylinder 31, and the raw material forms a liquid and flows in the extrusion tube 3; S4, the raw material enters the inner cavity 15 through the first channel 17, then flows out through the second channel 18, and finally is extruded from the outlet of the extrusion tube 3 to complete the discharge; S5. During the flow of raw materials, the cylinder 28 is driven to rotate through the output end of the fourth motor 30. Under the limitation of the circulation groove 29 and the limiting rod 27, the guide rod 26 and the guide ring 24 move back and forth linearly, thereby driving the straight rod 19, the plastic extrusion screw 11 and the tapered portion 12 to move back and forth linearly synchronously. When the tapered portion 12 moves toward the pretreatment bucket 4, the ball valve 16 moves toward the second channel 18. At this time, the raw materials can flow through the first channel 17, the inner cavity 15 and the second channel 18. When the tapered portion 12 moves toward the outlet, the ball valve 16 blocks the entrance of the first channel 17, which can interrupt the flow of the raw materials. According to the continuous rotation of the cylinder 28, the raw materials can be quantitatively output.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for preparing a plastic film material, characterized in that: include: Workbench (1); An extrusion tube (3) fixedly connected to the upper side of the workbench (1) via a fixing frame (2); A pre-treatment bucket (4) fixedly connected to the upper side of the extrusion tube (3); A feeding pipe (5) is fixedly connected to the surface of the pretreatment bucket (4), and a feeding hopper (6) is fixedly connected to the surface of the pretreatment bucket for adding raw materials; A plastic extrusion screw (11) is rotatably connected to the inside of the extrusion tube (3), one end of which is fixedly connected to a straight rod (19), the straight rod (19) slidably passes through the extrusion tube (3) and extends outward; A tapered portion (12) fixedly connected to the other end of the extrusion tube (3); A driving mechanism, which is arranged on the workbench (1) and is used to drive the plastic extrusion screw (11) to rotate so as to convey and compress the raw material; A reciprocating mechanism, which is arranged on the straight rod (19) and is used to control the reciprocating movement of the plastic extrusion screw (11) to quantitatively transport the raw material; as well as The movable valve mechanism is arranged in the conical portion (12) and intermittently conveys the material by following the reciprocating movement of the plastic extrusion screw (11).

2. A device for preparing a plastic film material according to claim 1, characterized in that: The driving mechanism comprises an extension rod (21), a third motor (22) and a sleeve (23); the extension rod (21) is fixedly connected to the end of the straight rod (19); the third motor (22) is fixedly connected to the top of the workbench (1); the sleeve (23) is fixedly connected to the output end of the third motor (22); and the third motor (22) is slidably connected inside the sleeve (23).

3. A device for preparing a plastic film material according to claim 2, characterized in that: The reciprocating mechanism comprises a guide ring (24), a bearing frame (25), a guide rod (26), a limit rod (27), a cylinder (28) and a fourth motor (30), wherein two bearing frames (25) are provided and are fixedly connected to the top of the workbench (1), the limit rod (27) is fixedly connected between the two bearing frames (25), the sleeve (23) is slidably connected to the surface of the limit rod (27), the circumferential surface of the straight rod (19) is provided with a mounting groove (20), the guide ring (24) is rotatably connected in the mounting groove (20), the cylinder (28) is rotatably connected between the two bearing frames (25), the guide rod (26) is fixedly connected to the bottom of the guide ring (24), a circulation groove (29) is provided on the circumferential surface of the cylinder (28), the guide rod (26) is slidably connected in the circulation groove (29), the fourth motor (30) is fixedly connected to the top of the workbench (1), and the cylinder (28) is fixedly connected to the output end of the fourth motor (30).

4. A device for preparing a plastic film material according to claim 3, characterized in that: The movable valve mechanism comprises an inner cavity (15) and a ball valve (16); the inner cavity (15) is opened in the conical portion (12); the ball valve (16) is slidably connected in the inner cavity (15); a first channel (17) is opened on a side of the inner cavity (15) close to the pretreatment bucket (4); a second channel (18) is opened on the conical surface of the inner cavity (15); and both the first channel (17) and the second channel (18) are connected to the inner cavity (15).

5. A device for preparing a plastic film material according to claim 4, characterized in that: A first rubber ring (13) is fixedly connected to the surface of the tapered portion (12), and a second rubber ring (14) is fixedly connected to a portion of the extrusion tube (3) close to the straight rod (19).

6. A device for preparing a plastic film material according to claim 5, characterized in that: A first motor (7) is fixedly connected to the bottom of the feeding tube (5), a screw conveyor (8) is rotatably connected inside the feeding tube (5), and the screw conveyor (8) is fixedly connected to the output end of the first motor (7).

7. A device for preparing a plastic film material according to claim 6, characterized in that: A second motor (9) is fixedly connected to the top of the pretreatment bucket (4), a stirring blade (10) is rotatably connected inside the pretreatment bucket (4), and the stirring blade (10) is fixedly connected to the output end of the second motor (9).

8. The device for preparing a plastic film material according to claim 7, characterized in that: A heat exchange cylinder (31) is fixedly connected to the circumferential surface of the extruded tube (3), and a liquid inlet (32) and a liquid outlet (33) are provided on the surface of the heat exchange cylinder (31).

9. A device for preparing a plastic film material according to claim 8, characterized in that: A heat exchanger (37) is fixedly connected inside the workbench (1), a heater (36) is fixedly connected to the side of the heat exchanger (37), and a first pipe (34) and a second pipe (35) are fixedly connected between the heat exchanger (37) and the liquid inlet (32) and the liquid outlet (33), respectively.

10. A process for preparing a plastic film material, applicable to a film material preparation device according to any one of claims 1 to 9, characterized in that: The process includes the following steps: S1, placing the raw material in a feed hopper (6), which enters a feeding pipe (5) through the feed hopper (6), and is driven by a first motor (7) to rotate a screw conveyor (8), and then is conveyed by the screw conveyor (8) to a pre-treatment hopper (4); S2, after the raw materials enter the pre-treatment bucket (4), the output end of the second motor (9) drives the stirring blade (10) to rotate, and continuously stirs the raw materials in the pre-treatment bucket (4) so ​​that the raw materials are mixed more evenly; S3, the uniformly mixed material enters the extrusion tube (3) from the pretreatment bucket (4), and the sleeve (23) is driven to rotate by the output end of the third motor (22), the sleeve (23) drives the extension rod (21) to rotate, the extension rod (21) drives the straight rod (19) to rotate, and finally drives the plastic extrusion screw (11) to rotate, and the material is transported and extruded by the plastic extrusion screw (11) and heated by the heat exchange cylinder (31), and the raw material becomes liquid and flows in the extrusion tube (3); S4, the raw material enters the inner cavity (15) through the first channel (17), then flows out through the second channel (18), and finally is extruded from the outlet of the extrusion tube (3) to complete the discharge; S5. During the flow of the raw materials, the cylinder (28) is driven to rotate by the output end of the fourth motor (30). Under the limit of the circulation groove (29) and the limit rod (27), the guide rod (26) and the guide ring (24) move back and forth in a straight line, thereby driving the straight rod (19), the plastic extrusion screw (11) and the tapered portion (12) to move back and forth in a straight line synchronously. When the tapered portion (12) moves in the direction of the pre-treatment bucket (4), the ball valve (16) moves in the direction of the second channel (18). At this time, the raw materials can flow through the first channel (17), the inner cavity (15) and the second channel (18). When the tapered portion (12) moves in the direction of the outlet, the ball valve (16) blocks the entrance of the first channel (17), thereby interrupting the flow of the raw materials. According to the continuous rotation of the cylinder (28), the raw materials can be quantitatively output.

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