Extruder for producing amino film plastic
By introducing a rotating plate and a stirring shaft into the extruder used for the production of amino film plastics, the problems of clogging of the feed pipe and uneven material distribution were solved, enabling continuous production and efficient material melting, thus improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU JOEL PLASTIC
- Filing Date
- 2025-03-07
- Publication Date
- 2026-07-28
AI Technical Summary
In the production of amino film plastics, the feed pipe is prone to blockage, the amount of material falling is uncontrollable, resulting in uneven melting and affecting production efficiency.
It adopts a rotating plate structure and stirring shaft design. The rotating plate and stirring shaft are driven by a motor to control the feeding speed and material mixing, prevent clogging and ensure uniform falling.
It achieves continuous and uniform material drop, reduces the risk of blockage, improves production efficiency and material melting effect, adapts to raw materials of different particle sizes, and extends equipment operating time.
Smart Images
Figure CN224561843U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of extruder technology, specifically an extruder for producing amino film plastics. Background Technology
[0002] Amino film plastics are thin-film polymer materials made from amino resins (such as urea-formaldehyde resin and melamine-formaldehyde resin) as the base material, modified with cellulose, hardeners, plasticizers, and other modifiers. They combine the heat resistance of thermosetting plastics with the processing characteristics of some thermoplastics, and can be formed through extrusion, calendering, and other processes. The working principle of the extruder used for producing amino film plastics is similar to that of other plastic extruders; it utilizes the rotation of a screw to push molten material towards the die head, where it is extruded and shaped through a die. Specifically, solid amino film plastic is heated to a molten state, then continuously extruded from the die head by the screw, and shaped into the desired form through a die.
[0003] However, amino film plastics generally suffer from high hygroscopicity and poor flowability. In particular, if the amino film raw material is in powder form, traditional gravity feeding easily leads to bridging and blockage on the pipe wall. Existing feeding devices are prone to uneven melting due to material accumulation, so the feeding system needs to be strengthened to prevent blockage. In addition, when the extruder used for the production of amino film plastics is working, the material falls from the feed cylinder to the feed pipe and then falls into the extruder body to melt. During this process, the amount of material falling through the feed pipe cannot be controlled, which can easily cause the feed pipe to be blocked. The blocked material forms pre-melted agglomerates due to retention, which cause the melt temperature field to be disordered (temperature difference can reach ±15℃) after entering the extruder, requiring maintenance and affecting production efficiency. Moreover, uneven material falling can also affect the extruder body's full melting of the material. Utility Model Content
[0004] To address the aforementioned problems, this application provides an extruder for the production of amino film plastics, which solves the problem of uncontrolled material flow in the feed pipe, causing blockages and affecting production efficiency, and also hindering the extruder body from fully melting the material.
[0005] An extruder for producing amino film plastics includes an extruder body. A feed pipe is fixedly connected to the top of the extruder body, and the interior of the feed pipe is connected to the extruder body. A second motor is fixedly connected to the outer surface of the feed pipe. A rotating shaft is fixedly connected to the output end of the second motor. A rotating plate is fixedly connected to the end of the rotating shaft away from the second motor. The rotating plate is located in the center of the feed pipe, and the width of the rotating plate is the same as the width inside the feed pipe. A bearing is fixedly connected to the end of the rotating plate away from the rotating shaft, and a wear-resistant brush is fixedly connected to the side surface of the rotating plate.
[0006] Furthermore, a feed cylinder is fixedly connected to the top of the feed pipe, a cover is fixedly connected to the top of the feed cylinder, a first motor is fixedly connected to the top of the cover, and a stirring shaft is fixedly connected to the output end of the first motor.
[0007] Furthermore, a cutter and a stirring paddle are fixedly connected to the side surface of the stirring shaft, and the cutter and the stirring paddle are arranged alternately.
[0008] Furthermore, the stirring blade is in the shape of a right-angled trapezoid, and the edge of the stirring blade is in contact with the inside of the feed cylinder.
[0009] Furthermore, a flow monitoring meter is fixedly connected to the outer surface of the feed pipe.
[0010] Furthermore, a base is fixedly connected to the bottom of the extruder body, and a control panel is fixedly connected to the outer surface of the base.
[0011] The beneficial effects of this utility model are as follows:
[0012] 1. The extruder for producing amino film plastics described in this utility model features a rotating plate that allows for adjustable feeding speed in the feeding pipe. This prevents material from clogging the feeding pipe and causing incomplete melting during descent without affecting the material feeding speed. It also ensures controllable feeding speed, avoiding the need to shut down the feeding pipe and wait. The rotating plate structure of this device dynamically adjusts the feeding speed, ensuring continuous production and avoiding downtime. It also reduces material residence time and prevents pre-melting and agglomeration, which is highly compatible with the processing requirements of amino film.
[0013] 2. The extruder for producing amino film plastics described in this utility model uses a rotating plate with flow rate control to ensure that the material enters the heating section at a set rate, reducing the risk of local overheating and decomposition. In conjunction with the setting of a stirring shaft, cutter and stirring paddle, the material inside the feed cylinder is quickly cut and stirred, improving the mixing speed of the material.
[0014] 3. The extruder for producing amino film plastics described in this utility model has a horizontally rotating rotating plate design that makes it easier to achieve local flow rate fine adjustment than the traditional screw feeder, adapting to raw material batches with different particle sizes or moisture contents. Moreover, the rotating plate dynamically adjusts the material passage cross section to form a forced unblocking effect, breaking through the static accumulation critical point and avoiding the situation where material accumulates on the pipe wall and forms bridging blockage.
[0015] 4. The extruder for producing amino film plastics described in this utility model, compared with traditional equipment that requires shutdown for cleaning when blocked, allows for dynamic adjustment of the rotating plate instead of completely shutting off the feeding, which greatly extends the continuous running time of the equipment and reduces production interruptions and efficiency losses. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0017] Figure 1 This is a right view of an extruder for producing amino film plastics according to this utility model;
[0018] Figure 2 This is a left view of an extruder for producing amino film plastics according to this utility model;
[0019] Figure 3 This is a diagram showing the internal structure of the feed cylinder in an extruder for producing amino film plastics according to this utility model.
[0020] Figure 4 This is a diagram showing the internal structure of the feed pipe in an extruder used for producing amino film plastics according to this utility model.
[0021] In the diagram: 1. Extruder body; 2. Feed cylinder; 20. Cover; 21. First motor; 22. Agitator shaft; 23. Cutter; 24. Agitator paddle; 3. Feed pipe; 4. Second motor; 5. Rotary shaft; 6. Rotating plate; 7. Bearing; 8. Wear-resistant brush; 9. Flow meter; 10. Control panel; 11. Base. Detailed Implementation
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.
[0023] like Figure 1-4 As shown, the extruder for producing amino film plastics in this embodiment includes an extruder body 1. A feed pipe 3 is fixedly connected to the top of the extruder body 1. The interior of the feed pipe 3 is connected to the extruder body 1. A second motor 4 is fixedly connected to the outer surface of the feed pipe 3. A rotating shaft 5 is fixedly connected to the output end of the second motor 4. A rotating plate 6 is fixedly connected to the end of the rotating shaft 5 away from the second motor 4. The rotating plate 6 is located in the center of the feed pipe 3. The width of the rotating plate 6 is the same as the width inside the feed pipe 3. A bearing 7 is fixedly connected to the end of the rotating plate 6 away from the rotating shaft 5. A wear-resistant brush 8 is fixedly connected to the side surface of the rotating plate 6.
[0024] Specifically, when the material falls into the feed pipe 3 under the action of gravity, the second motor 4 is turned on by the control panel 10. The output end of the second motor 4 provides power to the rotating shaft 5, thereby driving the rotating shaft 5 to rotate. Since the rotating shaft 5 is welded and fixed to the bearing 7, and the feed pipe 3 is welded and fixed to the bearing 7, and the inner cavity of the feed pipe 3 is matched with the setting of the rotating plate 6, the rotating shaft 5 drives the rotating plate 6 to rotate. Under the rotation of the rotating plate 6, the falling material is squeezed between the rotating plate 6 and the feed pipe 3, dividing the falling material into small parts and carrying them to the bottom of the rotating plate 6. Furthermore, the rotation of the rotating plate 6 drives the wear-resistant brush 8 to rotate and brush off the material adhering to the inner wall of the feed pipe, preventing material waste and improving the utilization rate of the material.
[0025] The top of the feed pipe 3 is fixedly connected to the feed cylinder 2, the top of the feed cylinder 2 is fixedly connected to the cover 20, the top of the cover 20 is fixedly connected to the first motor 21, and the output end of the first motor 21 is fixedly connected to the stirring shaft 22.
[0026] Specifically, the material is added from the feed cylinder 2, the cover 20 on the feed cylinder 2 is put on, and the first motor 21 is turned on using the control panel 10. The output end of the first motor 21 provides power to the stirring shaft 22.
[0027] A cutter 23 and a stirring paddle 24 are fixedly connected to the side surface of the stirring shaft 22, and the cutter 23 and the stirring paddle 24 are arranged alternately.
[0028] Specifically, the stirring shaft 22 rotates, which in turn drives the cutter 23 and the stirring paddle 24 to cut and stir the material in an alternating manner, so that the material can be fully crushed and mixed.
[0029] The 24 blades of the agitator are in the shape of a right trapezoid, and the edge of the agitator is in contact with the inside of the feed cylinder 2.
[0030] Specifically, when the stirring paddle 24 is stirring, it can easily scrape the inner wall of the feed cylinder 2, preventing material from adhering to the inner wall of the feed cylinder 2, thus avoiding material waste and inconvenience for cleaning.
[0031] A flow meter 9 is fixedly connected to the outer surface of the feed pipe 3.
[0032] Specifically, the material falls under the influence of gravity, and the flow monitoring meter 9 can monitor the material falling through the feed pipe 3.
[0033] A base 11 is fixedly connected to the bottom of the extruder body 1, and a control panel 10 is fixedly connected to the outer surface of the base 11.
[0034] Specifically, the flow monitoring meter 9 is electrically connected to the control panel 10, and the flow monitoring results are displayed on the control panel 10.
[0035] Specific working method: When in use, add the material from the feed cylinder 2, cover the cover 20 on the feed cylinder 2, and use the control panel 10 to turn on the first motor 21. The output end of the first motor 21 provides power to the stirring shaft 22, thereby rotating the stirring shaft 22, which in turn drives the cutter 23 and the stirring paddle 24 to cut and stir the material in an alternating manner, so that the material is crushed and mixed evenly.
[0036] When the material falls into the feed pipe 3 under the action of gravity, the second motor 4 is turned on by the control panel 10. The output end of the second motor 4 provides power to the rotating shaft 5, which in turn drives the rotating shaft 5 to rotate. The rotating shaft 5 then drives the rotating plate 6 to rotate. Under the rotation of the rotating plate 6, the falling material is squeezed between the rotating plate 6 and the feed pipe 3, which divides the falling material into small parts and carries them to the bottom of the rotating plate 6. Under the action of gravity, the material falling into the feed pipe 3 can be monitored by the flow monitoring meter 9. The flow monitoring meter 9 is electrically connected to the control panel 10 and displays the flow monitoring results on the control panel 10.
[0037] Based on actual production conditions, the material feeding speed of the feeding pipe 3 can be adjusted. Combined with the flow monitoring results on the control panel 10, since the control panel 10 is electrically connected to the second motor 4, the control panel 10 is used to control the rotation speed of the second motor 4, thereby controlling the rotation speed of the rotating shaft 5, and then controlling the rotation speed of the rotating plate 6. This controls the falling speed of the material, and the amount of falling material is monitored by the flow meter, so that the material falls evenly and controllably. It is not necessary to directly shut down the feeding pipe for material adjustment, thus realizing continuous production, preventing material accumulation and insufficient melting, and improving production efficiency.
[0038] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. An extruder for producing amino film plastics, comprising an extruder body (1), characterized in that: The top of the extruder body (1) is fixedly connected to a feed pipe (3), the inside of the feed pipe (3) is connected to the extruder body (1), the outer surface of the feed pipe (3) is fixedly connected to a second motor (4), the output end of the second motor (4) is fixedly connected to a rotating shaft (5), the rotating shaft (5) is fixedly connected to a rotating plate (6) at the end away from the second motor (4), the rotating plate (6) is located in the center of the feed pipe (3), the width of the rotating plate (6) is the same as the width inside the feed pipe (3), the rotating plate (6) is fixedly connected to a bearing (7) at the end away from the rotating shaft (5), and a wear-resistant brush (8) is fixedly connected to the side surface of the rotating plate (6).
2. The extruder for producing amino film plastics as described in claim 1, characterized in that: The top of the feed pipe (3) is fixedly connected to the feed cylinder (2), the top of the feed cylinder (2) is fixedly connected to the cover (20), the top of the cover (20) is fixedly connected to the first motor (21), and the output end of the first motor (21) is fixedly connected to the stirring shaft (22).
3. The extruder for producing amino film plastics as described in claim 2, characterized in that: A cutter (23) and a stirring paddle (24) are fixedly connected to the side surface of the stirring shaft (22), and the cutter (23) and the stirring paddle (24) are arranged alternately.
4. The extruder for producing amino film plastics as described in claim 3, characterized in that: The blades of the stirring paddle (24) are in the shape of a right trapezoid, and the edge of the stirring paddle is in contact with the inside of the feed cylinder (2).
5. The extruder for producing amino film plastics as described in claim 1, characterized in that... A flow meter (9) is fixedly connected to the outer surface of the feed pipe (3).
6. The extruder for producing amino film plastics as described in claim 1, characterized in that: The bottom of the extruder body (1) is fixedly connected to a base (11), and a control panel (10) is fixedly connected to the outer surface of the base (11).