Extrusion temperature adjusting device of double-screw extruder

Abstract

The utility model relates to the technical field of extruders, in particular to an extrusion temperature adjusting device of a double-screw extruder, which is characterized in that a ventilation opening is formed in one side of an outer mounting frame, an air blower is mounted on the inner wall of the ventilation opening, a feed port is formed in one end, close to an extrusion port, of the outer mounting frame, and a discharge port is formed in one end, far away from the feed port, of the outer mounting frame; an inclined plate is fixedly connected to a bottom plate in a cavity of the outer mounting frame, a baffle is arranged on the inner wall of the discharging port, after a product is extruded by the double-screw extruder, the product can enter the outer mounting frame through the feeding port, the air blower is started, heat is rapidly discharged through the ventilation port, the product can rapidly reach the expected temperature, the extrusion temperature is accurately controlled, and the production efficiency is improved. The problems that the shape, the size and the performance of an extrudate are unstable and the appearance, the strength and the durability of a product are possibly influenced due to the fact that the existing extrusion temperature cannot be accurately controlled are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of extruders, in particular to an extrusion temperature regulating device for a twin-screw extruder. Background Art

[0002] The extruder relies on the pressure and shear force generated by the rotation of the screw to fully plasticize and evenly mix the materials. It is then formed into a die and is widely used in the filling, reinforcement, toughening and other blending and modification of general-purpose plastics, engineering plastics, thermoplastic rubber and other polymer materials, as well as in the processing of special fibers, special adhesives and other fields. The twin-screw extruder is developed on the basis of the single-screw extruder. The twin-screw extruder has good feeding performance, mixing and plasticizing performance, exhaust performance, extrusion stability and other characteristics. It has been widely used in the molding and processing of extruded products.

[0003] However, extrusion temperature is a key factor affecting the melting and flow properties of plastics. The existing extrusion temperature cannot be precisely controlled, resulting in unstable shape, size and performance of the extrudate, which may affect the appearance, strength and durability of the product.

[0004] In view of the above problems, the utility model proposes an extrusion temperature regulating device for a twin-screw extruder. Utility Model Content

[0005] The purpose of the utility model is to provide an extrusion temperature regulating device for a twin-screw extruder, a vent is provided on one side of an outer frame, a blower is installed on the inner wall of the vent, a feed port is provided at one end of the outer frame close to the extrusion port, a discharge port is provided at one end of the outer frame away from the feed port, an inclined plate is fixedly connected to the bottom plate in the cavity of the outer frame, and a baffle is provided on the inner wall of the discharge port, thereby solving the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a twin-screw extruder extrusion temperature regulating device, including a temperature regulating device installed on the extrusion port of the twin-screw extruder, the temperature regulating device including an outer frame, and a support seat arranged at the lower end of the outer frame, a ventilation hole is opened on one side of the outer frame, a blower is installed on the inner wall of the ventilation hole, a feed port is opened at one end of the outer frame close to the extrusion port, a discharge port is opened at one end of the outer frame away from the feed port, an inclined plate is fixedly connected to the bottom plate of the cavity of the outer frame, and a baffle is arranged on the inner wall of the discharge port.

[0007] Preferably, the inclined plate is inclined from the feed port to the discharge port.

[0008] Preferably, the size of the baffle matches the discharge port, and the baffle is used to seal the discharge port.

[0009] Preferably, a rotating shaft assembly is provided at the connection between the baffle plate and the inner wall of the discharge port, and the baffle plate is connected to the inner wall of the discharge port through the rotating shaft assembly axis.

[0010] Preferably, the rotating shaft assembly comprises an inner shaft body having one end fixedly connected to the inner wall of the discharge port, an outer shaft body is arranged on the outer wall of the inner shaft body, and the outer shaft body is rotatably connected to the inner wall of the discharge port.

[0011] Preferably, a return torsion spring is sleeved on the outer wall of the inner shaft body, and both ends of the return torsion spring are fixedly connected to a middle connecting rod.

[0012] Preferably, one end of the middle connecting rod away from the return torsion spring is fixedly connected to the outer shaft body, and the outer shaft body is fixedly connected to the baffle.

[0013] Preferably, when the return torsion spring is in a relaxed state, the baffle seals the discharge port.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] The utility model discloses a twin-screw extruder extrusion temperature regulating device. After the twin-screw extruder extrude the product, the product will enter the outer packaging frame through the feed port. By starting the blower and using the vent to quickly exhaust heat, the product can quickly reach the expected temperature and the extrusion temperature can be accurately controlled. This solves the problem that the existing extrusion temperature cannot be accurately controlled, resulting in unstable shape, size and performance of the extrudate, which may affect the appearance, strength and durability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the extruder and the temperature regulating device of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the overall planar structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the rotating shaft assembly of the utility model.

[0020] In the figure: 1. twin-screw extruder; 2. temperature regulating device; 21. outer frame; 22. support seat; 23. vent; 24. feed port; 25. discharge port; 26. inclined plate; 27. baffle; 28. shaft assembly; 281. inner shaft body; 282. outer shaft body; 283. reset torsion spring; 284. middle connecting rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 4 In order to solve the problem that the existing extrusion temperature cannot be accurately controlled, resulting in unstable shape, size and performance of the extrudate, which may affect the appearance, strength and durability of the product, the following preferred technical solutions are provided:

[0023] The extrusion temperature regulating device of a twin-screw extruder includes a temperature regulating device 2 installed at the extrusion port of the twin-screw extruder 1, the temperature regulating device 2 includes an outer frame 21, and a support seat 22 arranged at the lower end of the outer frame 21, a ventilation hole 23 is opened on one side of the outer frame 21, a blower is installed on the inner wall of the ventilation hole 23, a feed port 24 is opened at one end of the outer frame 21 close to the extrusion port, a discharge port 25 is opened at one end of the outer frame 21 away from the feed port 24, an inclined plate 26 is fixedly connected to the bottom plate of the cavity of the outer frame 21, and a baffle 27 is arranged on the inner wall of the discharge port 25.

[0024] The inclined plate 26 is inclined from the feed port 24 to the discharge port 25 . The size of the baffle 27 matches the discharge port 25 . The baffle 27 is used to seal the discharge port 25 . A shaft assembly 28 is provided at the connection between the baffle 27 and the inner wall of the discharge port 25 . The baffle 27 is connected to the inner wall of the discharge port 25 through the shaft assembly 28 .

[0025] The rotating shaft assembly 28 includes an inner shaft body 281, one end of which is fixedly connected to the inner wall of the discharge port 25, and the outer wall of the inner shaft body 281 is provided with an outer shaft body 282. The outer shaft body 282 is rotatably connected to the inner wall of the discharge port 25, and the outer wall of the inner shaft body 281 is sleeved with a return torsion spring 283. Both ends of the return torsion spring 283 are fixedly connected with a middle connecting rod 284. The end of the middle connecting rod 284 away from the return torsion spring 283 is fixedly connected to the outer shaft body 282, and the outer shaft body 282 is fixedly connected to the baffle 27. When the return torsion spring 283 is in a relaxed state, the baffle 27 seals the discharge port 25.

[0026] Specifically, after the twin-screw extruder 1 extrude the product, the product will enter the outer frame 21 through the feed port 24. By starting the blower and using the vent 23 to quickly dissipate heat, the product can quickly reach the expected temperature and accurately control the extrusion temperature. This solves the problem that the existing extrusion temperature cannot be accurately controlled, resulting in unstable shape, size and performance of the extrudate, which may affect the appearance, strength and durability of the product. After the product enters the outer frame 21, it will slide to the discharge port 25 through the inclined plate 26 inclined from the feed port 24 to the discharge port 25, and at the same time, the baffle 27 will be squeezed. At this time, the baffle 27 is supported by the stress of the reset torsion spring 283. As the number of products increases, when the stress of the reset torsion spring 283 is insufficient to support the extrusion force of the product, the baffle 27 will open to discharge the product. After discharging, the reaction force of the reset torsion spring 283 drives the baffle 27 to reseal the discharge port 25, until a certain amount of products are discharged next time, the above operation will be repeated, thereby achieving the purpose of timing and quantitative discharging, which is highly practical.

[0027] To sum up: the product enters the outer frame 21 through the feed port 24, and by starting the blower and using the vent 23 to quickly dissipate heat, the product quickly reaches the expected temperature and the extrusion temperature is accurately controlled. After the product enters the outer frame 21, it will slide to the discharge port 25 through the inclined plate 26 inclined from the feed port 24 to the discharge port 25, and at the same time squeeze the baffle 27. At this time, the baffle 27 is supported by the stress of the reset torsion spring 283. As the number of products increases, when the stress of the reset torsion spring 283 is insufficient to support the extrusion force of the product, the baffle 27 will open to discharge the product. After discharging, the reaction force of the reset torsion spring 283 drives the baffle 27 to reseal the discharge port 25, until a certain amount of products are discharged next time, the above operation will be repeated to achieve the purpose of timed and quantitative discharging.

[0028] 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.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A twin-screw extruder extrusion temperature regulating device, comprising a temperature regulating device (2) installed at an extrusion port of a twin-screw extruder (1), characterized in that: The temperature regulating device (2) comprises an outer frame (21) and a support seat (22) arranged at the lower end of the outer frame (21); a ventilation opening (23) is provided on one side of the outer frame (21); a blower is installed on the inner wall of the ventilation opening (23); a feed port (24) is provided at one end of the outer frame (21) close to the extrusion port; a discharge port (25) is provided at one end of the outer frame (21) away from the feed port (24); an inclined plate (26) is fixedly connected to the bottom plate of the cavity of the outer frame (21); and a baffle (27) is provided on the inner wall of the discharge port (25).

2. The extrusion temperature regulating device for a twin-screw extruder according to claim 1, characterized in that: The inclined plate (26) is inclined from the feed port (24) toward the discharge port (25).

3. The extrusion temperature regulating device for a twin-screw extruder according to claim 1, characterized in that: The size of the baffle plate (27) matches the discharge port (25), and the baffle plate (27) is used to seal the discharge port (25).

4. The extrusion temperature regulating device for a twin-screw extruder according to claim 1, characterized in that: A rotating shaft assembly (28) is provided at the connection between the baffle plate (27) and the inner wall of the discharge port (25), and the baffle plate (27) is axially connected to the inner wall of the discharge port (25) via the rotating shaft assembly (28).

5. The extrusion temperature regulating device for a twin-screw extruder according to claim 4, characterized in that: The rotating shaft assembly (28) comprises an inner shaft body (281) having one end fixedly connected to the inner wall of the discharge port (25); an outer shaft body (282) is provided on the outer wall of the inner shaft body (281); and the outer shaft body (282) is rotatably connected to the inner wall of the discharge port (25).

6. The extrusion temperature regulating device for a twin-screw extruder according to claim 5, characterized in that: The outer wall of the inner shaft body (281) is sleeved with a return torsion spring (283), and both ends of the return torsion spring (283) are fixedly connected to a middle connecting rod (284).

7. The extrusion temperature regulating device for a twin-screw extruder according to claim 6, characterized in that: One end of the middle connecting rod (284) away from the return torsion spring (283) is fixedly connected to the outer shaft body (282), and the outer shaft body (282) is fixedly connected to the baffle (27).

8. The extrusion temperature regulating device for a twin-screw extruder according to claim 7, characterized in that: When the return torsion spring (283) is in a relaxed state, the baffle (27) seals the discharge port (25).

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