A quick die change device for an engineering plastics extruder

Abstract

This utility model belongs to the field of die changing for engineering plastic extruders, and in particular, it is a quick die changing device for engineering plastic extruders. It addresses the problem that existing extrusion dies are installed by multiple bolts to the extrusion tube of the extruder, and extrusion is performed through the extrusion tube and the die. However, changing the extrusion dies usually requires manual disassembly and installation, which is cumbersome and time-consuming, leading to low production efficiency. The proposed solution includes an extruder and four extrusion dies. The top of the extruder is an extrusion cylinder, and one end of the extrusion cylinder is an extrusion tube. A die changing mechanism enables quick die changing. Compared to traditional manual die changing, the device significantly shortens the die changing time and reduces downtime, thereby significantly improving production efficiency. The stable rotation and precise positioning of the rotating disc of the stabilizing mechanism avoids die changing errors caused by vibration or shaking, improving the quality of the extruded product.

Description

Technical Field

[0001] This utility model relates to the field of die changing technology for engineering plastic extruders, and in particular to a quick die changing device for engineering plastic extruders. Background Technology

[0002] Extruders are the most common type of new extruder equipment used in the plastics processing industry. They are used for processing hundreds of plastic products, such as extrusion blown film, extrusion foam, and extrusion drawing. During extrusion, the extrusion is usually carried out through the extrusion die of the extruder. The extrusion die needs to be replaced during use.

[0003] Existing extrusion dies are installed by multiple bolts at the extrusion tube position of the extruder, and extrusion is carried out through the extrusion tube and the die. However, replacing extrusion dies usually requires manual disassembly and installation, which is cumbersome and time-consuming, resulting in low production efficiency. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing extrusion dies, which are installed by multiple bolts at the extrusion tube of the extruder and extrusion is carried out through the extrusion tube and the die. However, changing the extrusion die usually requires manual disassembly and installation, which is cumbersome and time-consuming, resulting in low production efficiency. Therefore, this invention proposes a quick die changing device for engineering plastic extruders.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A quick die-changing device for an engineering plastic extruder includes an extruder and four extrusion dies. The top of the extruder is an extrusion cylinder, one end of the extrusion cylinder is an extrusion tube, and a fixing ring is fixedly sleeved on the outside of the extrusion cylinder. Each of the four extrusion dies has an extrusion hole, and the extrusion holes of the four extrusion dies are of different sizes. The extrusion cylinder is equipped with a die-changing mechanism, which can quickly change the extrusion die when it is necessary to change it.

[0007] To improve the stability of the mold changing mechanism, a stabilizing mechanism is also included. During use, the stabilizing mechanism can improve the stability of the mold changing mechanism.

[0008] In one possible design, the mold changing mechanism includes a frame, a motor, and a rotating disk. One side of the frame is fixedly connected to one end of the extrusion cylinder, and one side of the motor is fixedly connected to the inner wall of one side of the frame. The output end of the motor passes through one side of the frame and is fixedly connected to one side of the rotating disk. Each of the four corners of the rotating disk has a circular hole adapted to the extrusion die. The extrusion die is placed in the circular hole. Each of the four corners of the extrusion die has a first through hole, and a second bolt passes through the first through hole. The rotating disk has a first threaded hole that mates with the second bolt, and the second bolt is threadedly connected to the first threaded hole.

[0009] In one possible design, the stabilizing mechanism includes a limiting sleeve for improving the stability of the rotating disk and a first bolt. The inner wall of the limiting sleeve has a limiting groove with the inner diameter of the limiting groove being the same as the outer diameter of the rotating disk. The limiting sleeve is fitted onto the extrusion cylinder. The limiting sleeve has a third threaded hole for cooperating with the first bolt. The first bolt is threadedly connected to the third threaded hole. Insertion holes are provided on all four sides of the rotating disk. One end of the first bolt is inserted into the insertion hole and abuts against it.

[0010] In one possible design, the four corners of the limiting sleeve are provided with second through holes, and a third bolt for fixing the limiting sleeve is inserted in the second through holes. The four sides of the fixing ring are provided with second threaded holes that cooperate with the third bolts, and the third bolts are threadedly connected to the second threaded holes.

[0011] In one possible design, the inner side of the rotating disk is in contact with one end of the extrusion tube.

[0012] In one possible design, a torsion plate is welded to the bottom end of the first bolt to facilitate its rotation.

[0013] In one possible design, handles are welded to both sides of the limiting sleeve to facilitate the removal of the limiting sleeve by personnel.

[0014] In this application, before use, four extrusion dies with different extrusion orifice sizes are placed in the round holes at the four corners of the rotating disk. A second bolt is passed through the first through-hole at each corner of the extrusion die and screwed into the first threaded hole on the rotating disk to securely fix the extrusion die to the rotating disk. When a die change is required, the torsion plate is rotated to remove the first bolt from the insertion hole of the rotating disk and to unscrew it a certain distance from the third threaded hole, releasing the limiting effect on the rotating disk. The motor is then started, and its output drives the rotating disk to rotate. Since the angle between the four extrusion dies is 90 degrees, the motor drives the rotating disk to rotate 90 degrees, aligning the extrusion die with the extrusion tube, thus enabling rapid die changes. Simultaneously, the insertion hole is aligned with the first bolt. Rotating the torsion plate causes the first bolt to rotate, inserting it into the insertion hole. One end of the first bolt abuts against the insertion hole for fixation, improving the stability of the rotating disk. Then, the engineering plastic is extruded through the extruder and extrusion die. It should be noted that the motor requires an external controller and an external power supply during use.

[0015] The beneficial effects of this utility model are as follows:

[0016] In this utility model, a quick die-changing device for an engineering plastic extruder, through the design of a stabilizing mechanism including a limiting sleeve and a first bolt, effectively improves the stability of the die-changing mechanism. During the die-changing process, the cooperation of the limiting sleeve and the first bolt ensures the stable rotation and precise positioning of the rotating disk, avoids die-changing errors caused by vibration or shaking, and improves the quality of the extruded products.

[0017] In this utility model, a quick mold changing device for an engineering plastic extruder is described. Through the mold changing mechanism, the motor is started, and the output end of the motor drives the rotating disk to rotate. The angle between the four extrusion molds is ninety degrees, so the motor drives the rotating disk to rotate ninety degrees, and the extrusion molds of the rotating disk will be aligned with the extrusion tube, thereby enabling quick mold changing.

[0018] In this invention, the extrusion die is quickly changed through a die-changing mechanism. Compared with the traditional manual die-changing method, the device of this application greatly shortens the die-changing time and reduces downtime, thereby significantly improving production efficiency. By stabilizing the rotation and precise positioning of the rotating disk of the stabilizing mechanism, die-changing errors caused by vibration or shaking are avoided, thus improving the quality of the extruded products. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of a quick die-changing device for an engineering plastic extruder proposed in this utility model;

[0020] Figure 2 This is a side view of the limiting sleeve structure of a quick die-changing device for an engineering plastic extruder proposed in this utility model;

[0021] Figure 3 This is a bottom view of the limiting sleeve structure of a quick die-changing device for an engineering plastic extruder proposed in this utility model;

[0022] Figure 4 This utility model presents a schematic diagram of the structure of a quick die-changing device for an engineering plastic extruder in the state without the installation of the limiting sleeve.

[0023] Figure 5 This is a schematic diagram of the separation structure of the extrusion die and rotating disk of a quick die changing device for an engineering plastic extruder proposed in this utility model;

[0024] Figure 6 This is a cross-sectional view of the extrusion sleeve of a quick die-changing device for an engineering plastic extruder proposed in this utility model.

[0025] In the diagram: 1. Limiting sleeve; 2. Extrusion die; 3. Fixing ring; 4. Rotating disk; 5. First bolt; 6. Torsion plate; 7. Frame; 8. Motor; 9. Extrusion tube; 10. Round hole; 11. Insertion hole; 12. First threaded hole; 13. Limiting groove; 14. Second threaded hole. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Example 1

[0028] Reference Figure 1-6 A quick die-changing device includes: an extruder and four extrusion dies 2.

[0029] The top of the extruder is an extrusion cylinder, and one end of the extrusion cylinder is an extrusion tube 9, used for extruding engineering plastics. A retaining ring 3 is fixedly fitted on the outside of the extrusion cylinder, which is used to fix and support other components. Each of the four extrusion dies 2 has an extrusion orifice of different sizes to meet different extrusion requirements.

[0030] A die-changing mechanism is provided on the extrusion cylinder, which includes a frame 7, a motor 8, and a rotating disk 4. One side of the frame 7 is fixedly connected to one end of the extrusion cylinder, and one side of the motor 8 is fixedly connected to the inner wall of one side of the frame 7. The output end of the motor 8 passes through one side of the frame 7 and is fixedly connected to one side of the rotating disk 4, thereby driving the rotating disk 4 to rotate.

[0031] The rotating disk 4 has round holes 10 at each of its four corners that are adapted to the extrusion die 2, and the extrusion die 2 is placed in the round holes 10. The extrusion die 2 has first through holes at each of its four corners, and second bolts are inserted into the first through holes. The rotating disk 4 has first threaded holes 12 that are used to cooperate with the second bolts. The second bolts are threadedly connected to the first threaded holes 12, thereby firmly fixing the extrusion die 2 to the rotating disk 4.

[0032] To improve the stability of the mold changing mechanism, a stabilizing mechanism is also included. The stabilizing mechanism includes a limiting sleeve 1 and a first bolt 5. A limiting groove 13 is formed on the inner wall of the limiting sleeve 1, the inner diameter of which is the same as the outer diameter of the rotating disk 4. The limiting sleeve 1 is fitted onto the extrusion cylinder. A third threaded hole is formed on the limiting sleeve 1 to mate with the first bolt 5, and the first bolt 5 is threadedly connected to the third threaded hole. Insertion holes 11 are formed on all four sides of the rotating disk 4. One end of the first bolt 5 is inserted into and abuts against the insertion hole 11, thereby limiting and fixing the rotating disk 4.

[0033] This application is for the field of die changing in engineering plastic extruders, but it can also be used in other fields applicable to this application.

[0034] Example 2

[0035] refer to Figure 1-6 An improvement upon Embodiment 1: A quick die-changing device for an engineering plastic extruder, applicable in the field of die changing for engineering plastic extruders.

[0036] The limiting sleeve 1 has a second through hole at each of its four corners, and a third bolt for fixing the limiting sleeve 1 is inserted into the second through hole. The fixing ring 3 has a second threaded hole 14 on each of its four sides for use with the third bolt. The third bolt is threaded into the second threaded hole 14, thereby firmly fixing the limiting sleeve 1 to the extrusion cylinder.

[0037] The inner side of the rotating disk 4 is fitted against one end of the extrusion tube 9 to ensure sealing and stability during extrusion. A torsion plate 6 is welded to the bottom of the first bolt 5 to facilitate the operator's rotation of the first bolt 5. Handles are welded to both sides of the limiting sleeve 1 to facilitate the operator's removal of the limiting sleeve 1 for maintenance or replacement.

[0038] However, as is well known to those skilled in the art, the working principle and wiring method of motor 8 are commonplace and are all conventional methods or common knowledge. They will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0039] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A quick die-changing device for an engineering plastic extruder, comprising an extruder and four extrusion dies (2), characterized in that, The top of the extruder is an extrusion cylinder, one end of the extrusion cylinder is an extrusion tube (9), a fixing ring (3) is fixedly sleeved on the outside of the extrusion cylinder, and extrusion holes are opened on the four extrusion dies (2), and the extrusion holes of the four extrusion dies (2) are different in size. A die changing mechanism is provided on the extrusion cylinder, so that the extrusion die (2) can be quickly changed when it is necessary to change it. To improve the stability of the mold changing mechanism, a stabilizing mechanism is also included. During use, the stabilizing mechanism can improve the stability of the mold changing mechanism.

2. The quick die-changing device for an engineering plastic extruder according to claim 1, characterized in that, The mold changing mechanism includes a frame (7), a motor (8), and a rotating disk (4). One side of the frame (7) is fixedly connected to one end of the extrusion cylinder. One side of the motor (8) is fixedly connected to the inner wall of one side of the frame (7). The output end of the motor (8) passes through one side of the frame (7) and is fixedly connected to one side of the rotating disk (4). The four corners of the rotating disk (4) are provided with round holes (10) that are compatible with the extrusion mold (2). The extrusion mold (2) is placed in the round holes (10). The four corners of the extrusion mold (2) are provided with first through holes. A second bolt is inserted in the first through holes. The rotating disk (4) is provided with a first threaded hole (12) that is used in conjunction with the second bolt. The second bolt is threadedly connected to the first threaded hole (12).

3. The quick die-changing device for an engineering plastic extruder according to claim 1, characterized in that, The stabilizing mechanism includes a limiting sleeve (1) for improving the stability of the rotating disk (4) and a first bolt (5). The inner wall of the limiting sleeve (1) has a limiting groove (13). The inner diameter of the limiting groove (13) is the same as the outer diameter of the rotating disk (4). The limiting sleeve (1) is fitted onto the extrusion cylinder. The limiting sleeve (1) has a third threaded hole that cooperates with the first bolt (5). The first bolt (5) is threadedly connected to the third threaded hole. The rotating disk (4) has insertion holes (11) on all four sides. One end of the first bolt (5) is inserted into the insertion hole (11) and abuts against it.

4. A quick die-changing device for an engineering plastic extruder according to claim 3, characterized in that, The four corners of the limiting sleeve (1) are provided with second through holes, and a third bolt for fixing the limiting sleeve (1) is inserted in the second through holes. The four sides of the fixing ring (3) are provided with second threaded holes (14) that cooperate with the third bolts. The third bolts are threadedly connected to the second threaded holes (14).

5. A quick die-changing device for an engineering plastics extruder according to claim 2, characterized in that, The inner side of the rotating disk (4) is in contact with one end of the extrusion tube (9).

6. A quick die-changing device for an engineering plastic extruder according to claim 3, characterized in that, The bottom end of the first bolt (5) is welded with a torsion plate (6) to facilitate the rotation of the first bolt (5).

7. A quick die-changing device for an engineering plastic extruder according to claim 3, characterized in that, Both sides of the limiting sleeve (1) are welded with handles to facilitate the removal of the limiting sleeve (1) by personnel.

Images