A biaxially oriented plastic extrusion die for convenient cooling

Abstract

The utility model relates to the technical field of extrusion processing, and in particular to a biaxially stretched plastic extrusion mold that is convenient for cooling, comprising a mold body, a transmission mold cavity is opened transversely through the surface of the mold body, a stretching cavity is opened at the center of the inner cavity of the transmission mold cavity, an annular baffle is fixedly connected to the inner wall of the stretching cavity, and a core rod is transversely installed in the inner cavity of the transmission mold cavity. The utility model has the advantages of air cooling and heat removal by setting a ventilation auxiliary cooling component, a stretching cavity and an annular baffle, and can use the high thermal conductivity of the annular baffle to perform air cooling and heat removal on the material flowing through the transmission mold cavity when the drainage fan is in working state, and discharge the heat exchange hot air in time; by setting a port rapid cooling component, it has the advantages of rapid cooling and heat exchange, and can cooperate with the heat exchange ring to quickly cool the molding port when the semiconductor refrigeration plate is in working state, so as to achieve the effect of secondary cooling.

Description

Technical Field

[0001] The utility model relates to the technical field of extrusion processing, in particular to a biaxially stretched plastic extrusion die which is convenient for cooling. Background Art

[0002] Extrusion is a plastic molding method. It is a process in which the plastic raw materials are extruded into the desired shape through the action of an extruder when the plastic raw materials are in a high-temperature molten state. The plastic extrusion mold is one of the essential components.

[0003] After searching, the patent number is CN204869570U, and the name is a utility model of an online biaxial stretching plastic extrusion mold, including a flange, a head body, a first body, a second body, a pressure ring, a die, a first core rod, a second core rod, a diverter sleeve, a first thermal insulator and a second thermal insulator. Through research and analysis, it is found that although the biaxial stretching of the melt can be achieved, the following disadvantages still exist to a certain extent.

[0004] For example, the component cannot perform double cooling treatment on the material. After direct extrusion molding, the finished product needs to be naturally cooled for a long time. The installation of additional cooling equipment increases the floor space and material transportation costs, which has certain limitations. In order to solve the above technical problems, we have designed a biaxial stretching plastic extrusion mold that is convenient for cooling. Utility Model Content

[0005] The utility model aims to provide a biaxially stretched plastic extrusion die which is convenient for cooling and has the advantage of double cooling, thereby solving the problem that the component cannot perform double cooling treatment on the material, and after direct extrusion molding, the finished product needs to be naturally cooled for a long time, while the installation of a separate cooling device increases the floor space and material transportation costs.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a biaxially stretched plastic extrusion mold that is convenient for cooling, comprising a mold body, a transmission mold cavity is transversely penetrated through the surface of the mold body, a stretching cavity is opened at the center of the inner cavity of the transmission mold cavity, an annular baffle is fixedly connected to the inner wall of the stretching cavity, a core rod is transversely installed in the inner cavity of the transmission mold cavity, a ventilation auxiliary cooling component is penetrated through the surface of the mold body, and a port quick cooling component is installed at the center of the left side of the mold body.

[0007] Preferably, the ventilation auxiliary cooling component includes a hollow annular groove, the hollow annular groove is opened inside the annular baffle on the left side, and a transmission groove is opened on the outer side of the hollow annular groove.

[0008] Preferably, an integrated bucket is fixedly installed in the inner cavity of the transmission trough, a drainage fan is screwed to the inner cavity of the integrated bucket, and a small noise reducer is fixedly installed on the surface of the integrated bucket.

[0009] Preferably, the port rapid cooling assembly comprises a receiving groove, the receiving groove is opened on the left side of the mold body and is located on the outside of the core rod, and a mounting ring groove is opened on the right side of the inner cavity of the receiving groove.

[0010] Preferably, a heat exchange ring is fixedly mounted in the inner cavity of the mounting ring groove, and a semiconductor refrigeration sheet is slidably mounted in the inner cavity of the receiving groove.

[0011] Preferably, a positioning seat is fixedly connected to the left side of the mold body, an anti-slip block is provided on the surface of the positioning seat, and a torsion spring is fixedly connected to one side of the anti-slip block.

[0012] Preferably, the side of the anti-slip block close to the mold body is in sliding contact with the surface of the semiconductor refrigeration plate, and the other end of the torsion spring is fixedly connected to the surface of the mold body.

[0013] Preferably, four corners on the left and right sides of the mold body are provided with mounting holes, and the number of the annular baffles is several and evenly distributed in the inner cavity of the stretching cavity.

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

[0015] 1. The utility model has the advantages of air cooling and heat removal by arranging the ventilation auxiliary cooling component, the stretching cavity and the annular baffle. When the drainage fan is in working state, the high thermal conductivity of the annular baffle can be used to perform air cooling and heat removal treatment on the material flowing through the transmission cavity, and the heat exchange hot air can be discharged in time to achieve the effect of primary cooling;

[0016] 2. The utility model has the advantage of rapid cooling and heat exchange by setting up a port rapid cooling component. When the semiconductor refrigeration plate is in working state, it can cooperate with the heat exchange ring to quickly cool the molded port to achieve the effect of secondary cooling, which is more in line with the actual needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a bottom-up stereogram of the structure of the utility model;

[0019] Figure 3 It is a sectional stereoscopic diagram of the structure of the utility model;

[0020] Figure 4 This is a cutaway perspective view of the ventilation auxiliary cooling component of the utility model;

[0021] Figure 5 This is a three-dimensional schematic diagram of the utility model when the port quick cooling component is separated;

[0022] Figure 6 For this utility model Figure 5 A is an enlarged schematic diagram.

[0023] In the figure: 1. mold body; 2. mounting hole; 3. core rod; 4. transmission mold cavity; 5. ventilation auxiliary cooling assembly; 501. integrated bucket; 502. small noise reducer; 503. hollow ring groove; 504. transmission groove; 505. drainage fan; 6. port quick cooling assembly; 601. semiconductor cooling plate; 602. heat exchange ring; 603. mounting ring groove; 604. storage groove; 605. anti-slip block; 606. positioning seat; 607. torsion spring; 7. stretching cavity; 8. annular baffle. DETAILED DESCRIPTION

[0024] See also Figure 1-Figure 6 A biaxially stretched plastic extrusion die for convenient cooling comprises a die body 1, a transmission die cavity 4 is transversely penetrated on the surface of the die body 1, a stretching cavity 7 is provided at the center of the inner cavity of the transmission die cavity 4, an annular baffle 8 is fixedly connected to the inner wall of the stretching cavity 7, a core rod 3 is transversely installed in the inner cavity of the transmission die cavity 4, a ventilation auxiliary cooling component 5 is penetrated on the surface of the die body 1, and a port quick cooling component 6 is installed at the center of the left side of the die body 1;

[0025] See also Figure 3 and Figure 4 The ventilation auxiliary cooling component 5 includes a hollow annular groove 503, the hollow annular groove 503 is opened inside the annular baffle 8 on the left side, and a transmission groove 504 is opened outside the hollow annular groove 503;

[0026] See also Figure 3 and Figure 4 The inner cavity of the transmission slot 504 is fixedly installed with an integrated bucket 501, the inner cavity of the integrated bucket 501 is screwed with a drainage fan 505, and the surface of the integrated bucket 501 is fixedly installed with a small noise reducer 502;

[0027] See also Figure 5 The port quick cooling assembly 6 includes a receiving groove 604, which is opened on the left side of the mold body 1 and located on the outside of the core rod 3, and a mounting ring groove 603 is opened on the right side of the inner cavity of the receiving groove 604;

[0028] See also Figure 5 The inner cavity of the mounting ring groove 603 is fixedly mounted with a heat exchange ring 602, and the inner cavity of the receiving groove 604 is slidably mounted with a semiconductor cooling plate 601;

[0029] See also Figure 5 and Figure 6 The left side of the mold body 1 is fixedly connected with a positioning seat 606, and the surface of the positioning seat 606 is provided with an anti-slip block 605, and one side of the anti-slip block 605 is fixedly connected with a torsion spring 607;

[0030] See also Figure 5 and Figure 6 , the side of the anti-slip block 605 close to the mold body 1 is in sliding contact with the surface of the semiconductor cooling plate 601, and the other end of the torsion spring 607 is fixedly connected to the surface of the mold body 1;

[0031] See also Figure 1 , Figure 2 and Figure 3 , the four corners of the left and right sides of the mold body 1 are provided with mounting holes 2, and the number of annular baffles 8 is several and evenly distributed in the inner cavity of the stretching cavity 7;

[0032] The material of the annular baffle 8 is high-strength aluminum alloy, and the shape of the annular baffle 8 is a hollow truncated cone, which can play a role in reducing the flow space, so that the flowing material can diffuse and fill outward after passing over the annular baffle 8, thereby achieving the purpose of bidirectional stretching;

[0033] When the two exhaust fans 505 are in working state, the airflow direction is from bottom to top, which can accelerate the airflow from bottom to top by utilizing the principle that hot air is lighter, and quickly discharge the top heat, so that the overall auxiliary cooling effect is better;

[0034] The heat dissipation end of the semiconductor cooling sheet 601 is located on the left side of the mold body 1, the cooling end of the semiconductor cooling sheet 601 is located in the receiving groove 604, and the inner circle of the semiconductor cooling sheet 601 is larger than the inner diameter of the transmission mold cavity 4;

[0035] By providing the mounting hole 2, the mold body 1 can be fixedly installed in a suitable position in cooperation with the external bolts to meet the material feeding requirements. By providing the core rod 3 and the transfer cavity 4, a specific molding space can be formed to facilitate cooling the material into a specific shape.

[0036] By providing the integrated bucket 501, the fixed installation requirements of the drainage fan 505 can be met, and the small noise reducer 502 and the transmission slot 504 are connected. By providing the small noise reducer 502, the flowing gas can be subjected to noise reduction treatment, which is more in line with the actual needs of users;

[0037] By providing a hollow annular groove 503, it can be opened in part of the annular baffle 8 to increase the contact area between the flowing gas and the annular baffle 8, thereby ensuring the heat exchange efficiency. By providing a semiconductor cooling sheet 601, the temperature in the storage groove 604 can be forced to be reduced in the working state;

[0038] By setting the heat exchange ring 602, it can play a good heat exchange role, reduce its own surface temperature and perform secondary heat exchange and cooling treatment on the material. By setting the installation ring groove 603 and the storage groove 604, the installation space requirements of the heat exchange ring 602 and the semiconductor refrigeration plate 601 can be met respectively;

[0039] By providing the anti-slip block 605, the semiconductor cooling sheet 601 can be buckled and pressed in the installed state, thereby preventing the semiconductor cooling sheet 601 from randomly moving to the left and detaching from the mold body 1. By providing the positioning seat 606, the anti-slip block 605 can be positioned and installed to ensure the rotation stability of the anti-slip block 605.

[0040] By setting the torsion spring 607, it can be connected with the mold body 1 and the anti-slip block 605, thereby preventing the anti-slip block 605 from rotating at will. By setting the stretching cavity 7, an extended cavity can be formed, and axial and radial double stretching can naturally occur during material transmission;

[0041] When the heat exchange ring 602 is not installed, the installation ring groove 603 is connected to the inner cavity of the transfer cavity 4. In actual application, the heat exchange ring 602 and the mold body 1 are integrally formed to avoid gaps between the heat exchange ring 602 and the mold body 1 that affect the material molding quality.

[0042] When in use, all components are in the initial installation state. The mold body 1 is fixedly installed on the extruder discharge port by means of bolts and mounting holes 2. Then the anti-slip block 605 is rotated, the torsion spring 607 is tightened, and the semiconductor refrigeration sheet 601 is moved rightward into the storage groove 604. When the semiconductor refrigeration sheet 601 is inserted and docked, the anti-slip block 605 is released. Under the elastic reset action of the torsion spring 607, the anti-slip block 605 is automatically reset and fits the outer side of the semiconductor refrigeration sheet 601 to avoid the semiconductor refrigeration sheet 601 from moving randomly. During the extrusion process, under the action of the external extruder equipment, the material enters the transmission cavity 4 in the mold body 1 and moves from right to left. When the material is placed in the stretching cavity 7, due to The inner diameter of the stretching cavity 7 is larger than the inner diameter of the transmission cavity 4, so that the material diffuses and moves outward while moving to the left, thereby achieving the purpose of bidirectional stretching. At the same time, with the assistance of the annular baffle 8, the stretching effect is further improved, and the drainage fan 505 is synchronously controlled to work, so that air enters from the small noise reducer 502 below, passes through the hollow annular groove 503 and the transmission groove 504, and takes away the heat exchange gas from the annular baffle 8, and is finally discharged from the small noise reducer 502 above, thereby achieving the effect of auxiliary air cooling. The semiconductor refrigeration plate 601 is synchronously controlled to work, so that the cooling end of the semiconductor refrigeration plate 601 is forced to cool down. With the cooperation of the heat exchange ring 602, the left discharge port of the mold body 1 is subjected to secondary cooling treatment, which is convenient for the material to be quickly cooled and formed.

[0043] In summary: the biaxially stretched plastic extrusion mold with convenient cooling solves the problem that the component cannot perform double cooling treatment on the material by arranging the ventilation auxiliary cooling component 5, the port quick cooling component 6, the stretching cavity 7 and the annular baffle 8. After direct extrusion molding, the finished product needs to be naturally cooled for a long time, and the installation of a separate cooling equipment increases the floor space and material transportation costs.

Claims

1. A biaxially stretched plastic extrusion die for convenient cooling, comprising a die body (1), characterized in that: A transfer cavity (4) is transversely penetrated through the surface of the mold body (1), a stretching cavity (7) is provided at the center of the inner cavity of the transfer cavity (4), an annular baffle (8) is fixedly connected to the inner wall of the stretching cavity (7), a core rod (3) is transversely installed in the inner cavity of the transfer cavity (4), a ventilation auxiliary cooling component (5) is installed through the surface of the mold body (1), and a port quick cooling component (6) is installed at the center of the left side of the mold body (1).

2. The biaxially stretched plastic extrusion die for convenient cooling according to claim 1, characterized in that: The ventilation auxiliary cooling component (5) comprises a hollow annular groove (503), wherein the hollow annular groove (503) is provided inside the annular baffle (8) on the left side, and a transmission groove (504) is provided outside the hollow annular groove (503).

3. The biaxially stretched plastic extrusion die for convenient cooling according to claim 2, characterized in that: An integrated bucket (501) is fixedly mounted in the inner cavity of the transmission trough (504), a drainage fan (505) is screwedly mounted in the inner cavity of the integrated bucket (501), and a small noise reducer (502) is fixedly mounted on the surface of the integrated bucket (501).

4. The biaxially stretched plastic extrusion die for convenient cooling according to claim 1, characterized in that: The port quick cooling component (6) comprises a receiving groove (604), wherein the receiving groove (604) is provided on the left side of the mold body (1) and is located on the outside of the core rod (3), and a mounting ring groove (603) is provided on the right side of the inner cavity of the receiving groove (604).

5. The biaxially stretched plastic extrusion die for convenient cooling according to claim 4, characterized in that: A heat exchange ring (602) is fixedly mounted in the inner cavity of the mounting ring groove (603), and a semiconductor cooling plate (601) is slidably mounted in the inner cavity of the receiving groove (604).

6. The biaxially stretched plastic extrusion die for convenient cooling according to claim 5, characterized in that: A positioning seat (606) is fixedly connected to the left side of the mold body (1), and an anti-slip block (605) is movably sleeved on the surface of the positioning seat (606), and a torsion spring (607) is fixedly connected to one side of the anti-slip block (605).

7. The biaxially stretched plastic extrusion die for convenient cooling according to claim 6, characterized in that: The side of the anti-slip block (605) close to the mold body (1) is in sliding contact with the surface of the semiconductor cooling plate (601), and the other end of the torsion spring (607) is fixedly connected to the surface of the mold body (1).

8. The biaxially stretched plastic extrusion die for convenient cooling according to claim 1, characterized in that: The four corners on the left and right sides of the mold body (1) are each provided with mounting holes (2), and the number of the annular baffles (8) is several and evenly distributed in the inner cavity of the stretching cavity (7).

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