Lower discharging die head for double-screw extruder
By setting the directional changer and the directional changer in the twin-screw extruder, the direction of the glue is changed from horizontal to vertical, which solves the problem of gravity bending of the material during the discharge process, and achieves stable discharge and simplified cooling process.
Patent Information
- Application Number
- CN202422132985.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-30
AI Technical Summary
During the discharge process of existing twin-screw extruders, the materials are prone to bend due to gravity and cannot meet the preset usage standards.
The directional changer is used to change the flow direction of the adhesive from horizontal to vertical. By setting the directional change channel and the connection structure, the material is avoided from bending under the action of gravity, and the adjustment mechanism is simplified.
Effectively prevent the material from bending under gravity, simplifying the subsequent cooling process, and facilitating the stable discharge and use of the material.
Smart Images
Figure CN223131328U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of extruders, and particularly relates to a lower discharge die head for a twin-screw extruder. Background Art
[0002] A twin-screw extruder heats and plasticizes rubber materials through the actions of screw extrusion, shearing, and stirring, and continuously extrudes the materials through a die head. It mainly consists of screws, a barrel, a head, a feeding mechanism, a transmission device, and a temperature control system. Among them, the die head is the core component of the extruder, which is used to extrude the molten material and give it the required shape. The die head usually consists of multiple parts, and the die determines the final shape of the extruded product.
[0003] The existing twin-screw extruders are usually horizontally arranged. At this time, the direction of the material can only move in the transportation direction of the twin-screw extruder, and then be horizontally transported in the die head to the die for shape transformation and extrusion. After that, the deformed rubber material is extruded horizontally. Subsequently, to ensure the transportation of the just-extruded rubber material, support rollers / transport rollers and other support / transport components are usually arranged at the rear to ensure continuous discharging.
[0004] However, in the case of horizontal discharging, for products with relatively high hardness after cooling, the property of relatively high hardness is usually used for subsequent material use. The just-extruded plasticized rubber material is usually relatively soft, and it usually undergoes varying degrees of deformation due to the influence of gravity during the distance between the die outlet and the subsequent support / transport components, and cannot meet the preset use standards in terms of material bending deformation. Even if an adjustment mechanism is added in the subsequent process, it is impossible to ensure that there is no bending deformation problem in the length direction of the deformed material. Summary of the Utility Model
[0005] Aiming at the problems in the prior art, the utility model provides a lower discharge die head for a twin-screw extruder in which the material does not bend after discharging, and solves the problem that the material bends downward under the action of gravity during the discharging process in the prior art.
[0006] The technical solution adopted by the utility model is as follows:
[0007] A lower discharge die head for a twin-screw extruder, comprising a body. One end of the body is provided with a connecting disc, and a connecting port is opened on the connecting disc. The body is also provided with a mounting disc, and a mounting port is arranged on the mounting disc. A die is installed in the mounting port. The mounting disc and the connecting disc are arranged perpendicular to each other in the axial direction. The body is provided with a first communication hole and a second communication hole. A direction-changing member is arranged inside the body, and a direction-changing channel is arranged inside the direction-changing member. One end of the direction-changing channel is a first connection end, and the first connection end is communicated with the connecting port through the first communication hole on the body. The other end of the direction-changing channel is a second connection end, and the second connection end is communicated with the mounting port through the second communication hole on the body. By arranging the direction-changing member, the rubber material flowing in horizontally from the connecting disc can be changed in direction in the direction-changing channel to the vertical direction. At this time, the material extruded in the die will not bend under the action of gravity, and at the same time, the addition of an adjustment mechanism is avoided, which is convenient for subsequent use after cooling.
[0008] Preferably, the connecting port is an eight-shaped port, and the cross-sectional shapes of the first communication hole and the connecting port in the direction perpendicular to the length direction are the same. By setting the connecting port as an eight-shaped port, it can better match the twin-screw extruder, reduce the accumulation of rubber material at the connection, and at the same time, the same cross-sectional shapes of the first communication hole and the connecting port in the direction perpendicular to the length direction also reduce the accumulation of rubber material at the connection between the two.
[0009] Preferably, the opening profile of the first connection end is larger than the cross-sectional profile of the first connection port in the direction perpendicular to its length direction. By setting the opening profile of the first connection end to be larger than the cross-sectional profile of the first connection port in the direction perpendicular to its length direction, the rubber material can pass through the first connection end without being blocked by the first connection end when entering the direction-changing channel from the first connection port, so as to reduce the accumulation of rubber material at the connection between the two.
[0010] Preferably, the opening profile of the first connection end is a kidney-shaped hole structure. By setting the opening profile of the first connection end as a kidney-shaped hole structure, it is convenient for the processing of the direction-changing member.
[0011] Preferably, the cross-section of the second communication hole in the direction perpendicular to its length direction is circular, the mounting port is circular, and the opening profile of the second connection end is the same as the cross-sectional profile of the second communication hole in the direction perpendicular to its length direction. By setting the second communication hole and the mounting port as circular, it is convenient for the installation and adaptation of the die.
[0012] Preferably, the body is also provided with a maintenance disc, and the maintenance disc is detachably arranged at the other end of the body. By arranging the maintenance disc, the maintenance disc can be removed when it is necessary to clean or maintain the die head, so as to facilitate the cleaning or removal of the internal direction-changing member.
[0013] As can be seen from the above technical solutions, the advantages of the present utility model are as follows: Through the provided direction-changing member, the rubber material flowing in the horizontal direction of the connecting disc can be changed in direction in the direction-changing channel to the vertical direction. At this time, the material extruded in the mold will not bend under the action of gravity, and at the same time, the addition of an adjustment mechanism is avoided, which is convenient for subsequent use after cooling. By setting the connection port as an eight-shaped port, it can be better matched with the twin-screw extruder, reducing the accumulation of rubber material at the connection. At the same time, the first communication hole and the connection port have the same cross-sectional shape perpendicular to the length direction, also reducing the accumulation of rubber material at the connection between the two. By setting the opening contour of the first connection end to be larger than the cross-sectional contour of the first connection port perpendicular to its length direction, the rubber material can pass through the first connection end without being blocked when entering the direction-changing channel from the first connection port, so as to reduce the accumulation of rubber material at the connection between the two. By setting the opening contour of the first connection end as a kidney-shaped hole structure, it is convenient for the processing of the direction-changing member. By setting the second communication hole and the installation port as circular, it is convenient for the installation and adaptation of the mold. Through the provided inspection disc, the inspection disc can be removed when it is necessary to clean or repair the die head, so as to facilitate the cleaning or removal of the internal direction-changing member. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required to be used in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0015] Figure 1 It is a schematic structural diagram of an embodiment of the specific implementation manner of the present utility model.
[0016] Figure 2 It is an exploded view of an embodiment of the specific implementation manner of the present utility model.
[0017] Figure 3 It is a cross-sectional view of an embodiment of the specific implementation manner of the present utility model.
[0018] MAIN REFERENCE NUMERAL DESCRIPTIONS
[0019] In the figure: 1, body; 2, connecting disc; 3, connection port; 4, mounting disc; 5, mounting port; 6, mold; 7, first communication hole; 8, second communication hole; 9, direction-changing member; 10, direction-changing channel; 11, first connection end; 12, second connection end; 13, inspection disc. SPECIFIC IMPLEMENTATION MANNER
[0020] In order to make the objectives, features, and advantages of the present utility model more obvious and understandable, the following will clearly and completely describe the technical solutions in the present utility model with reference to the accompanying drawings in the specific embodiments. Obviously, the embodiments described below are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of this patent.
[0021] Embodiment:
[0022] As Figures 1-3 shown, a lower discharge die head for a twin-screw extruder includes a body 1. One end of the body 1 is provided with a connection plate 2, and a connection port 3 is opened on the connection plate 2. An installation plate 4 is further provided on the body 1, and an installation port 5 is provided on the installation plate 4. A mold 6 is installed in the installation port 5. The installation plate 4 and the connection plate 2 are perpendicularly arranged in the axial direction. The body 1 is provided with a first communication hole 7 and a second communication hole 8. A direction-changing member 9 is arranged inside the body 1, and a direction-changing channel 10 is arranged inside the direction-changing member 9. One end of the direction-changing channel 10 is a first connection end 11, and the first connection end 11 communicates with the connection port 3 through the first communication hole 7 on the body 1. The other end of the direction-changing channel 10 is a second connection end 12, and the second connection end 12 communicates with the installation port 5 through the second communication hole 8 on the body 1. An inspection plate 13 is further provided on the body 1, and the inspection plate 13 is detachably arranged at the other end of the body 1. With such a setting, through the arranged direction-changing member 9, the rubber material flowing in horizontally from the connection plate 2 can be changed in direction in the direction-changing channel 10 to the vertical direction. At this time, the material extruded in the mold 6 will not bend under the action of gravity, and at the same time, it also avoids adding an adjustment mechanism, which is convenient for subsequent use after cooling. Through the arranged inspection plate 13, the inspection plate 13 can be removed when it is necessary to clean or repair the die head, so as to facilitate the cleaning or removal of the internal direction-changing member 9.
[0023] In this embodiment, the connection port 3 is an eight-shaped port, and the cross-sectional shapes of the first communication hole 7 and the connection port 3 in the direction perpendicular to the length direction are the same. With such a setting, by setting the connection port 3 as an eight-shaped port, it can better match the twin-screw extruder, reduce the accumulation of rubber material at the connection, and at the same time, the same cross-sectional shapes of the first communication hole 7 and the connection port 3 in the direction perpendicular to the length direction also reduce the accumulation of rubber material at the connection between the two.
[0024] In this embodiment, the opening profile of the first connection end 11 is larger than the cross-sectional profile of the first connection port 3 in the direction perpendicular to its length. With such a setting, by making the opening profile of the first connection end 11 larger than the cross-sectional profile of the first connection port 3 in the direction perpendicular to its length, when the rubber material enters the diversion channel 10 from the first connection port 3, it will not be blocked by the first connection end 11, so as to facilitate reducing the accumulation of the rubber material at the connection between the two.
[0025] In this embodiment, the opening profile of the first connection end 11 is a kidney-shaped hole structure. With such a setting, by setting the opening profile of the first connection end 11 as a kidney-shaped hole structure, it is convenient for the processing of the diversion member 9.
[0026] In this embodiment, the cross-section of the second communication hole 8 in the direction perpendicular to its length is circular, the mounting port 5 is circular, and the opening profile of the second connection end 12 is the same as the cross-sectional profile of the second communication hole 8 in the direction perpendicular to its length. With such a setting, by making the second communication hole 8 and the mounting port 5 circular, it is convenient for the installation and adaptation of the mold 6.
[0027] In this embodiment, the diversion channel 10 is arranged with an arc change inside, which is convenient for the smooth movement of the rubber material between the first connection end 11 and the second connection end 12.
[0028] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A lower discharge die head for a twin-screw extruder, comprising a body (1), characterized in that, One end of the body (1) is provided with a connecting plate (2), a connecting port (3) is formed on the connecting plate (2), an installation plate (4) is further provided on the body (1), an installation port (5) is provided on the installation plate (4), a mold (6) is installed in the installation port (5), the installation plate (4) and the connecting plate (2) are arranged perpendicular to each other in the axial direction, a first communication hole (7) and a second communication hole (8) are provided on the body (1), a direction-changing member (9) is arranged inside the body (1), a direction-changing channel (10) is arranged inside the direction-changing member (9), one end of the direction-changing channel (10) is a first connection end (11), the first connection end (11) is communicated with the connecting port (3) through the first communication hole (7) on the body (1), the other end of the direction-changing channel (10) is a second connection end (12), and the second connection end (12) is communicated with the installation port (5) through the second communication hole (8) on the body (1).
2. The downstream discharge die head for a twin-screw extruder according to claim 1, characterized in that, The connecting port (3) is an eight-shaped port, and the cross-sectional shape of the first communication hole (7) and the connecting port (3) in the direction perpendicular to the length direction is the same.
3. The lower discharging die head for a twin-screw extruder according to claim 2, characterized in that, The opening contour of the first connection end (11) is larger than the cross-sectional contour of the first connection port (3) in the direction perpendicular to its length direction.
4. The lower discharge die head for a twin-screw extruder according to claim 3, characterized in that, The opening contour of the first connection end (11) is a kidney-shaped hole structure.
5. The lower discharge die head for a twin-screw extruder according to claim 1, characterized in that, The cross-section of the second communication hole (8) in the direction perpendicular to its length direction is circular, the installation port (5) is circular, and the opening contour of the second connection end (12) is the same as the cross-sectional contour of the second communication hole (8) in the direction perpendicular to its length direction.
6. The lower discharge die head for a twin-screw extruder according to claim 1, characterized in that, A maintenance plate (13) is further provided on the body (1), and the maintenance plate (13) is detachably arranged at the other end of the body (1).