Temperature control device for plastic material extrusion

Abstract

The utility model relates to the field of plastic production, and discloses a temperature control device for plastic material extrusion, which comprises a main body component and a heat uniformizing component, the main body component comprises an extruder body and a mouth mold positioned on the extruder body, and the mouth mold protrudes to the tail end of the extruder body; the heat uniformizing component comprises a rotatable metal pipe which is arranged on the outer peripheral side of the protruding mouth mold and does not make contact with the protruding mouth mold, and a plurality of heating quartz lamps distributed in an annular array are installed on the inner wall of the metal pipe; in addition, the extruder body is further provided with a driving mechanism used for driving the metal pipe to rotate. Under the action of the driving mechanism, the metal pipe can be driven to rotate, so that the heating quartz lamps in the metal pipe can rotate, and the heating quartz lamps rotate, namely, the heating quartz lamps can uniformly cover the mouth mold with heat, so that the mouth mold is uniformly heated.

Description

Technical Field

[0001] The utility model belongs to the field of plastic production, in particular to a temperature control device used for extruding plastic materials. Background Art

[0002] During the plastic extrusion and molding stage, the melt flows through the die head and out to the die to form the desired product shape. The temperature control at this stage should be adjusted according to the product specifications and requirements. Usually the temperature of the die will be slightly higher than the temperature of the die head to ensure that the product has a good appearance and performance.

[0003] The die is usually equipped with a heater, which can be a resistance wire, a quartz lamp or other type of heating element. These heaters work according to the instructions of the control system to maintain or change the temperature of the die. However, since the die itself is tubular, the distance between different positions on the die and the heating element is always different, which will cause the die to be heated unevenly, which will affect the quality of plastic extrusion. Utility Model Content

[0004] Technical problem to be solved: How to make the die evenly heated.

[0005] Technical solution: The utility model provides a temperature control device for extrusion of plastic materials, including a main component and a uniform heating component: the main component includes an extruder body and a die located thereon, the die protruding to the tail end of the extruder body; the uniform heating component includes a rotatable metal tube arranged on the outer peripheral side of the protruding die without contacting the die, and a plurality of heating quartz lamps distributed in a circular array are installed on the inner wall of the metal tube; in addition, a driving mechanism for driving the metal tube to rotate is also provided on the extruder body.

[0006] Furthermore, the driving mechanism includes a servo motor installed on the extruder body, and a driving pulley is installed on the output shaft of the servo motor; at the same time, a driven pulley is fixedly sleeved on the outer peripheral side of the metal tube, and a tensioned belt is connected between the two pulleys.

[0007] Furthermore, the two pulleys and the belt in the driving mechanism can be replaced by a worm gear, wherein the worm gear is connected to the output shaft of the servo motor, and the worm gear meshing therewith is sleeved on the outer peripheral side of the metal tube.

[0008] Furthermore, a bearing seat consisting of a bearing and a shell is provided at the left and right pipe openings of the metal tube, the inner ring of the bearing is interference fit with the metal tube, the inner wall of the shell is fixedly connected to the outer ring of the bearing, and the left and right ends of the shell are protruding more than the bearing, and the protruding part located on the outermost side is structured to form a sealed side wall, which is fixed to the outer peripheral side of the die.

[0009] Furthermore, a bracket is installed at the bottom end of the bearing seat, and the bracket is fixedly connected to the extruder body through a connecting mechanism.

[0010] Furthermore, the connection mechanism includes screw holes opened at corresponding positions on the bracket and the extruder body, and bolts are connected between the screw holes. A rubber ring is sleeved on the outer peripheral side of the bolt to prevent the bolt from slipping and to cushion the bearing seat.

[0011] Technical effect: In the utility model, the metal tube can be driven to rotate under the action of the driving mechanism, so that multiple heating quartz lamps in the metal tube can rotate. The rotation of the heating quartz lamp means that it can evenly cover the mouth die with heat, so that the mouth die can obtain a uniform heating effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 This is a schematic diagram of the structure of the plastic extruder of the utility model;

[0014] Figure 2 This is a schematic diagram of the metal tube structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the bearing seat structure of the utility model;

[0016] Figure 4 This is a schematic diagram of the driving mechanism structure of the utility model;

[0017] In the figure: 1. extruder body; 2. die; 3. metal tube; 4. heating quartz lamp; 5. driving mechanism; 501. servo motor; 502. driving pulley; 503. driven pulley; 504. belt; 6. bearing; 7. housing. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0019] The temperature control device for plastic material extrusion provided in this embodiment is as follows: Figure 1 and Figure 2 As shown, it includes a main body component and a heat-dissipating component, wherein:

[0020] The main component includes an extruder body 1 and a die 2 located thereon, and the die 2 protrudes to the rear end of the extruder body 1, that is, the die 2 for extruding plastic is exposed, so that the extruded plastic can be conveniently contained in other containers.

[0021] The uniform heating member includes a metal tube 3 disposed on the outer peripheral side of the protruding die 2 and not in contact with the die. A plurality of heating quartz lamps 4 distributed in a circular array are installed on the inner wall of the metal tube 3. In addition, a driving mechanism 5 for driving the metal tube 3 to rotate is also provided on the extruder body 1. Figure 4 As shown, the driving mechanism 5 includes a servo motor 501 installed on the extruder body 1, and a driving pulley 502 is installed on the output shaft of the servo motor 501; at the same time, a driven pulley 503 is fixedly sleeved on the outer peripheral side of the metal tube 3, and a tensioned belt 504 is connected between the two pulleys. In this way, when the servo motor 501 is working, the metal tube 3 and the heating quartz lamp 4 can be driven to rotate through the two pulleys, and the rotating heating quartz lamp 4 brings heat to the die 2 evenly.

[0022] It is worth mentioning that Figure 3 As shown, in order to avoid heat dissipation, a bearing seat consisting of a bearing 6 and a shell 7 is arranged at the left and right pipe openings of the metal tube 3, the inner ring of the bearing 6 is interference fit with the metal tube 3, the inner wall of the shell 7 is fixedly connected to the outer ring of the bearing 6, and the left and right ends of the shell 7 are more protruding than the bearing 6, and the protruding part located on the outermost side is structured to form a sealed side wall, which is fixed to the outer peripheral side of the die 2. That is to say, the two ends of the metal tube 3 are blocked by the shell 7 of the bearing seat, and the heat generated by the heating quartz lamp 4 will not be dissipated.

[0023] The specific connection method of the bearing seat is as follows: a bracket is installed at the bottom end of the bearing seat, and the bracket is fixedly connected to the extruder body 1 through a connecting mechanism. The connecting mechanism includes screw holes opened at corresponding positions on the bracket and the extruder body 1, and bolts are connected between the screw holes. The outer peripheral side of the bolt is sleeved with a rubber ring to prevent the bolt from slipping and to cushion the bearing seat. Because the rotation of the bearing 6 and the metal tube 3 will generate vibration, a certain amount of cushioning is required.

[0024] In addition, the two pulleys and the belt 504 in the driving mechanism 5 described above can be replaced by a worm gear, wherein the worm gear is connected to the output shaft of the servo motor 501, and the worm gear meshing therewith is sleeved on the outer peripheral side of the metal tube 3. Because the belt 504 itself has a certain elasticity, even if it is in a tensioned state at the beginning, it is still very likely to become loose after a period of use.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A temperature control device for extruding plastic materials, comprising a main body component and a heat-uniform component: The main component comprises an extruder body (1) and a die (2) located thereon, and is characterized in that: The die (2) protrudes to the rear end of the extruder body (1); The uniform heating component comprises a rotatable metal tube (3) arranged on the outer peripheral side of the protruding die (2) and not in contact with the die, and a plurality of heating quartz lamps (4) distributed in a ring array are installed on the inner wall of the metal tube (3); in addition, a driving mechanism (5) for driving the metal tube (3) to rotate is also arranged on the extruder body (1).

2. The temperature control device for plastic material extrusion according to claim 1, characterized in that: The driving mechanism (5) comprises a servo motor (501) mounted on the extruder body (1), and a driving pulley (502) is mounted on the output shaft of the servo motor (501); at the same time, a driven pulley (503) is fixedly sleeved on the outer peripheral side of the metal tube (3), and a tensioned belt (504) is matched and connected between the two pulleys.

3. The temperature control device for plastic material extrusion according to claim 2, characterized in that: The two pulleys and the belt (504) in the driving mechanism (5) can be replaced by a worm gear, wherein the worm gear is connected to the output shaft of the servo motor (501), and the worm gear meshing therewith is sleeved on the outer peripheral side of the metal tube (3).

4. The temperature control device for plastic material extrusion according to claim 1, characterized in that: A bearing seat consisting of a bearing (6) and a housing (7) is arranged at the left and right pipe openings of the metal pipe (3); the inner ring of the bearing (6) is interference-fitted with the metal pipe (3); the inner wall of the housing (7) is fixedly connected to the outer ring of the bearing (6); and the left and right ends of the housing (7) are protruding from the bearing (6); the protruding portion located on the outermost side forms a sealed side wall, which is fixed to the outer peripheral side of the die (2).

5. The temperature control device for plastic material extrusion according to claim 4, characterized in that: A bracket is installed at the bottom end of the bearing seat, and the bracket is fixedly connected to the extruder body (1) through a connecting mechanism.

6. The temperature control device for plastic material extrusion according to claim 5, characterized in that: The connection mechanism comprises screw holes provided at corresponding positions on the bracket and the extruder body (1), bolts being matched and connected between the screw holes, and a rubber ring being sleeved on the outer peripheral side of the bolt to prevent the bolt from slipping and to cushion the bearing seat.

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