Extrusion device of co-extruder

Abstract

The utility model relates to the related technical field of co-extruders, in particular to an extrusion device of a co-extruder, which comprises a device body, a supporting plate used for supporting the device body is arranged on the bottom surface of the device body, a driving motor is arranged on the supporting plate and at one end of the device body, a speed reducer is arranged at the output end of the driving motor, and the speed reducer is connected with the device body. A screw conveying mechanism used for extrusion conveying is arranged at the output end of the speed reducer, a hopper used for conveying wood-plastic mixed raw materials is arranged on one side of the top face of the device body, and a plurality of gap adjusting units used for improving the raw material mixing effect are arranged on the portion, on the end face of the device body, of one side of the hopper. And an extrusion discharging head is arranged at the other end part of the device body and is opposite to the driving motor. According to the utility model, due to the arrangement of the screw conveying mechanism and the gap adjusting unit, wood-plastic raw materials are extruded and sheared for multiple times in the extrusion process, so that a good mixing effect is achieved, and the use effect is good.

Description

Technical Field

[0001] This utility model relates to the technical field of co-extrusion machines, and in particular to a co-extrusion extrusion device. Background Technology

[0002] Wood-plastic composite materials refer to a new type of recyclable material made primarily from low-value or waste biomass, utilizing the principles of polymer interface chemistry and the characteristics of plastic filler modification, mixed with a certain proportion of plastic base material, and processed into shape through professional technology.

[0003] The working principle of a co-extruder relies on the pressure and shear force generated by the rotating screw to plasticize and uniformly mix the material, which is then formed through a die and cooled to create the final product. However, existing co-extruders, due to their single internal screw structure and the need to mix multiple different wood-plastic composite materials during extrusion, may experience poor material compatibility or fail to achieve uniform mixing, thus affecting the wood-plastic composite effect of the raw materials. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a co-extrusion extrusion device to solve the technical problems mentioned in the background section.

[0005] To solve the above technical problems, the present invention provides the following technical solution: a co-extrusion extrusion device, comprising a device body, a support plate for supporting the device body is provided on the bottom surface of the device body, a drive motor is provided on the support plate and at one end of the device body, a reducer is provided at the output end of the drive motor, and a screw conveying mechanism for extrusion conveying is provided at the output end of the reducer.

[0006] The screw conveying mechanism includes a screw spindle that mates with the output end of a reducer. A homogenizing conveying section is provided on the screw spindle near the reducer. The homogenizing conveying section has several horizontally receiving positive threads and negative threads, with the positive threads and negative threads spaced apart. A positive thread is provided on the screw spindle at the end of the negative thread. A heating rod is provided on the screw spindle. A hopper for conveying wood-plastic composite raw materials is provided on one side of the top surface of the device body. A gap adjustment unit for increasing the mixing effect of the raw materials is provided on one side of the hopper and on the end face of the device body. An extrusion discharge head is provided at the other end of the device body opposite to the drive motor.

[0007] Preferably, the gap adjustment unit includes a maintenance cover disposed on the end face of the device body, and a plurality of gap adjustment plates are disposed on the inner end face of the maintenance cover and on the top horizontal plane of the maintenance cover.

[0008] Preferably, several of the gap adjustment units are respectively arranged in the installation area of ​​the homogenization conveying section.

[0009] Preferably, one end of the inspection cover and the end face of the device body are hinged, and the other end of the inspection cover and the end face of the device body are provided with a locking structure for cooperation.

[0010] Preferably, the screw conveyor mechanism has a cylindrical cavity located outside the device body and inside the device body.

[0011] Preferably, the gap adjustment plate is detachably mounted on the top of the inner end face of the inspection cover.

[0012] By employing the above technical solution, this utility model provides a co-extrusion extrusion device, which has at least the following beneficial effects:

[0013] 1. Due to the screw conveying mechanism and gap adjustment unit, this utility model increases the exchange and mixing effect between wood-plastic materials by changing the flow and rotation direction of the wood-plastic raw materials through the homogenization conveying section at the front of the screw conveying mechanism. In addition, the gap adjustment plate installed on the top of the inner end face of the inspection cover allows for the adjustment of a suitable gap between the screw main shaft and the cylinder cavity left inside the device body. This enables the wood-plastic raw materials to undergo multiple compressions and shearings during the extrusion process, thereby achieving a good mixing effect and resulting in good performance.

[0014] 2. Due to the setting of the gap adjustment unit, the gap adjustment plate can be easily installed and removed by separating and opening the inspection cover. The gap adjustment plate can be replaced according to the actual adjustment needs, which makes it easy to set a suitable gap between the screw spindle and the cylinder cavity left inside the device body. Attached Figure Description

[0015] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0016] In the attached diagram:

[0017] Figure 1 This is a first-view perspective three-dimensional structural diagram of the co-extrusion extrusion device of this utility model;

[0018] Figure 2 This is a second-view perspective three-dimensional structural diagram of the overall co-extrusion extrusion device of this utility model;

[0019] Figure 3 This is a front sectional plan view of a co-extrusion extrusion device according to the present invention.

[0020] In the diagram: 1. Device body; 2. Support plate; 3. Drive motor; 4. Screw conveying mechanism; 41. Screw spindle; 42. Homogenizing conveying section; 421. Positive thread one; 422. Reverse thread; 43. Positive thread two; 44. Heating rod; 5. Hopper; 6. Inspection cover; 7. Gap adjusting plate; 8. Extrusion discharge head. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Figures 1-3 An embodiment of this utility model: a co-extrusion extrusion device includes a device body 1. A support plate 2 for supporting the device body 1 is welded to the bottom surface of the device body 1 via a connecting shaft. A drive motor 3 is fixedly installed on the support plate 2 and at one end of the device body 1 via bolts to a motor support frame. The output end of the drive motor 3 is fixedly connected to a reducer via a coupling. A screw conveying mechanism 4 for extrusion conveying is installed at the output end of the reducer via a coupling.

[0023] The screw conveyor mechanism 4 includes a screw main shaft 41 connected to the output end of the reducer via a coupling. A homogenizing conveying section 42 is provided on the screw main shaft 41 near the reducer. The homogenizing conveying section 42 has several horizontally receiving positive threads 421 and negative threads 422, spaced apart and integrally formed. An integrally formed positive thread 43 is received on the screw main shaft 41 at the end of the negative thread 422. A heating rod 44 is installed at the center end of the screw main shaft 41. The heating rod 44 can be used to preheat... The heating device body 1 and the screw spindle 41 reduce the external heat energy input during the extrusion process. A hopper 5 for conveying wood-plastic composite raw materials is installed in a slot on one side of the top surface of the device body 1. The lower end of the hopper 5 is connected to the interior of the device body 1. Several gap adjustment units for increasing the mixing effect of raw materials are installed at intervals in a slot on one side of the hopper 5 and on the end face of the device body 1. An extrusion head 8 is installed at the other end of the device body 1 opposite to the drive motor 3. One end of the extrusion head 8 extends into the interior of the device body 1 and is connected to the wood-plastic co-extrusion mold.

[0024] The gap adjustment unit includes a maintenance cover 6 installed on the end face of the device body 1. Multiple gap adjustment plates 7 are installed on the inner end face of the maintenance cover 6 and on the top horizontal plane of the maintenance cover 6. Several gap adjustment units are installed in the installation area of ​​the homogenizing conveying section 42. One end of the maintenance cover 6 is connected to the end face of the device body 1 by a hinge. The other end of the maintenance cover 6 is installed on the end face of the device body 1 and a matching locking structure is installed. The locking structure can be opened and closed at the slot opened on the end face of the device body 1. The screw conveying mechanism 4 has a cylindrical cavity with a slot opened on the outside and inside the device body 1. The gap adjustment plates 7 are detachably connected to the top of the inner end face of the maintenance cover 6 by a snap-fit ​​method.

[0025] The specific implementation process is as follows: In use, firstly, the top surface of the device body 1 is closed via the locking structure on one end of the inspection cover 6, making the device body 1 a closed, integral structure. Then, the already mixed wood-plastic composite raw material is poured out through the hopper 5, and simultaneously the heating rod 44 and drive motor 3 are started. Under the action of the heating rod 44, the interior of the device body 1 is preheated, reducing the external heat energy input during extrusion. Under the action of the drive motor 3, the generated power is output to the screw spindle 41 through the reducer. At this time, the homogenizing agent in the screw conveyor mechanism 4, which is horizontally and integrally formed by several positive threads 421 and several negative threads 422, is... The conveying section 42 increases the exchange and mixing effect between wood-plastic raw materials by changing the flow and rotation direction of the wood-plastic raw materials on the homogenizing conveying section 42. In addition, the gap adjustment plate 7 installed on the top of the inner end face of the inspection cover 6 adjusts the appropriate gap between the screw main shaft 41 and the cylinder cavity left inside the device body 1, so that the wood-plastic raw materials undergo multiple compression and shearing during the extrusion process, thereby achieving a good mixing effect. Finally, the mixed wood-plastic raw materials are extruded and conveyed forward through the positive thread 43 on the screw main shaft 41, which is horizontally connected to the end reverse thread 422, and then conveyed to the wood-plastic co-extrusion die for subsequent processing via the extrusion head 8.

[0026] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. In addition, the present invention is mainly used to protect mechanical devices, so the control method and circuit connection are no longer explained in detail in the present invention.

[0027] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A co-extruder extrusion device, comprising a device body (1), Features: The bottom surface of the device body (1) is provided with a support plate (2) for supporting the device body (1); a drive motor (3) is provided on the support plate (2) and at one end of the device body (1); a reducer is provided at the output end of the drive motor (3); and a screw conveying mechanism (4) for extrusion conveying is provided at the output end of the reducer; The screw conveying mechanism (4) comprises a screw main shaft (41) arranged in cooperation with the output end of the reducer, a homogenizing conveying part (42) is arranged on the screw main shaft (41) near the reducer on one side, a plurality of horizontally connected positive threads (421) and reverse threads (422) are arranged on the homogenizing conveying part (42), and the plurality of positive threads (421) and the plurality of reverse threads (422) are arranged at intervals, a positive thread (43) is arranged on the screw main shaft (41) and at the end of the terminal reverse thread (422), an electric heating rod (44) is arranged on the screw main shaft (41), a hopper (5) for conveying wood-plastic mixed raw materials is arranged on one side of the top surface of the device body (1), a plurality of gap adjustment units for increasing the mixing effect of raw materials are arranged on one side of the hopper (5) and on the end surface of the device body (1), and an extrusion discharge head (8) is arranged at the other end of the device body (1) and opposite to the drive motor (3).

2. A co-extruder extrusion device according to claim 1, Features: The gap adjustment unit comprises an inspection cover (6) arranged on the end surface of the device body (1), and a plurality of gap adjustment plates (7) are arranged on the inner end surface of the inspection cover (6) and on the horizontal surface of the top of the inspection cover (6).

3. A co-extruder extrusion device according to claim 1, Features: A plurality of the gap adjustment units are correspondingly arranged in the installation area of ​​the homogenizing conveying part (42).

4. A co-extrusion machine extrusion device according to claim 2, Features: One end of the inspection cover (6) and the end surface of the device body (1) are arranged in a hinged manner, and the other end of the inspection cover (6) is provided with a locking structure for matching use on the end surface of the device body (1).

5. A co-extruder extrusion device according to claim 1, Features: A barrel cavity is provided outside the screw conveying mechanism (4) and inside the device body (1).

6. A co-extrusion machine extrusion device according to claim 2, Features: The gap adjustment plate (7) is movably and detachably arranged on the top of the inner end surface of the inspection cover (6).

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