Temperature control type plastic extrusion molding all-in-one machine

Abstract

The utility model belongs to the technical field of extruders, and discloses a temperature control type plastic extrusion molding all-in-one machine which comprises a machine barrel, a feeding hole is formed in the machine barrel, a screw rod is mounted in the machine barrel, a die orifice is formed in the end part of the machine barrel, the screw rod can rotate, and a cooling water pipe is wound outside the machine barrel in a spiral state. A water return pipeline is arranged at the position right opposite to the discharging direction of the die orifice, circulating water circulates in the water return pipeline, and a fan is arranged at the position right opposite to the discharging direction of the die orifice through the water return pipeline. Circulating water absorbs heat in the cooling water pipe, evaporates to form steam, enters the water return pipeline, is cooled by air blown out by the fan, is converted into liquid and flows into the cooling water pipe again, and meanwhile, a product extruded from the die orifice is cooled and shaped by the air blown out by the fan. Continuous cooling of the machine barrel is achieved through circulating heat absorption and cooling procedures, it is ensured that the temperature in the machine barrel is kept at a certain level, the fan can cool and shape a product just extruded from a die opening, and the product quality is further ensured.

Description

Technical Field

[0001] This utility model relates to the field of extruder technology, specifically to a temperature-controlled integrated plastic extrusion molding machine. Background Technology

[0002] An extruder is a mechanical device that melts plastic (or other thermoplastic materials) by heating and pressurizing it, and then extrudes it through a die of a specific shape to form a shape.

[0003] Common extruders include screw extruders. The main structure of a screw extruder includes a barrel, a screw conveyor, and a heating device. As a large amount of heat is generated during the friction between the material and the barrel and screw, some of the raw material becomes ineffective. Cooling water pipes are usually installed outside the barrel. When the temperature of the extruded material is higher than the set temperature, cooling water is automatically introduced into the cooling water pipes to quickly cool the barrel.

[0004] In existing technologies, cooling measures are only implemented on the barrel when the material temperature exceeds the threshold. However, some products with temperatures exceeding the threshold have already been produced, and the product quality cannot be restored through cooling, thus the overall production quality cannot be guaranteed. Utility Model Content

[0005] To address this issue, this utility model provides a temperature-controlled plastic extrusion molding integrated machine, which solves the technical problem in the prior art where cooling measures are only implemented on the barrel when the material temperature exceeds the threshold, while some products with temperatures exceeding the threshold have already been produced and cannot be restored to their quality through cooling.

[0006] To solve the above-mentioned technical problems, this utility model specifically provides the following technical solution:

[0007] A temperature-controlled plastic extrusion molding machine includes a barrel, a feed inlet on the barrel, a screw rod installed inside the barrel, and a die opening at the end of the barrel. The screw rod is rotatable to push the material fed in from the feed inlet to the die opening.

[0008] The barrel is spirally wound with a cooling water pipe, and a return water pipe is provided at the position opposite to the material discharge direction of the die opening. The return water pipe is connected to the cooling pipe and circulating water flows inside it.

[0009] A fan is installed directly opposite the discharge direction of the die opening in the return water pipe. The circulating water absorbs heat in the cooling water pipe, evaporates to form steam, and enters the return water pipe. After being cooled by the air blown out by the fan, it is converted into liquid and flows back into the cooling water pipe. At the same time, the product extruded from the die opening is cooled and shaped by the air blown out by the fan.

[0010] Furthermore, a drive structure is installed at the end of the barrel away from the die opening, and the output end of the drive structure is connected to the screw rod;

[0011] The drive structure includes a drive motor mounted at the end of the barrel, and the end of the helical rod extends through the outer wall of the barrel and is connected to the drive motor.

[0012] Furthermore, the helical rod is hollow;

[0013] A heating column is installed inside the screw rod.

[0014] Furthermore, a conveyor is mounted on the end of the barrel near the die opening, the conveyor being directly below the die opening to receive the product discharged from the die opening.

[0015] Furthermore, vertical mounting plates are symmetrically installed on the conveyor, the end of the return water pipe is connected to the side wall of the vertical mounting plate, a cover plate is provided on the vertical mounting plate, and the fan is installed on the cover plate.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] In this invention, the circulating water absorbs heat and evaporates into steam in the cooling water pipe before entering the return water pipe. After being cooled by the air blown out by the fan, it is converted back into liquid and flows back into the cooling water pipe. The circulating heat absorption and cooling process realizes the continuous cooling of the barrel, ensuring that the temperature inside the barrel is kept at a certain level and avoiding the situation where the product quality is not high due to excessive temperature.

[0018] Furthermore, the air blown out by the fan not only cools the steam flowing into the return water pipe, but also cools and shapes the product that has just been extruded from the die, further ensuring product quality. Attached Figure Description

[0019] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0020] Figure 1 A schematic diagram of the overall structure of a temperature-controlled plastic extrusion molding integrated machine provided for an embodiment of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of the barrel, cooling water pipe, return water pipe, etc. in the embodiment of this utility model;

[0022] Figure 3 A front view structural diagram of a temperature-controlled plastic extrusion molding integrated machine provided for an embodiment of this utility model;

[0023] Figure 4 This is a schematic cross-sectional view of the screw rod and heating column in an embodiment of the present invention.

[0024] The labels in the diagram represent the following:

[0025] 1-Barrel; 2-Feed inlet; 3-Screw rod; 4-Die opening; 5-Cooling water pipe; 6-Conveyor; 7-Return water pipe; 8-Fan; 9-Drive motor; 10-Heating column; 11-Support plate; 12-Insulation column; 13-Vertical mounting plate; 14-Cover plate. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figure 1 and Figure 2 As shown, this utility model provides a temperature-controlled plastic extrusion molding integrated machine, including a barrel 1, a feed inlet 2 on the barrel 1, a screw rod 3 installed inside the barrel 1, and a die opening 4 at the end of the barrel 1. The screw rod 3 can rotate to push the material put in from the feed inlet 2 to the die opening 4.

[0028] Cooling water pipes 5 are spirally wound around the outside of the barrel 1. A return water pipe 7 is provided at the position opposite to the discharge direction of the die opening 4. The return water pipe 7 is connected to the cooling water pipe 5 and circulating water flows inside it.

[0029] A fan 8 is installed directly opposite the discharge direction of the return water pipe 7 and the die 4. The circulating water absorbs heat in the cooling water pipe 5, evaporates to form steam, and enters the return water pipe 7. After being cooled by the air blown out by the fan 8, it is converted into liquid and flows back into the cooling water pipe 5. At the same time, the product extruded from the die 4 is cooled and shaped by the air blown out by the fan 8.

[0030] In this invention, the circulating water absorbs heat and evaporates into steam in the cooling water pipe 5 before entering the return water pipe 7. After being cooled by the air blown out by the fan 8, it is converted back into liquid and flows back into the cooling water pipe 5. The circulating heat absorption and cooling process realizes the continuous cooling of the barrel 1, ensuring that the temperature inside the barrel 1 is kept at a certain level, and avoiding the situation where the product quality is not high due to excessive temperature.

[0031] Furthermore, the air blown out by fan 8 not only cools and lowers the steam flowing into and out of the water pipe 7, but also cools and shapes the product that has just been extruded from the die 4, further ensuring product quality.

[0032] Material is fed into the barrel 1 through the feed port 2, and the rotating screw 3 conveys the material to the die port 4. During the rotational conveying process, the screw 3 can shear and squeeze the material, thereby assisting in the melting of the material. In order to drive the screw 3 to rotate, a drive structure is installed at the end of the barrel 1 away from the die port 4. The output end of the drive structure is connected to the screw 3. The drive structure includes a drive motor 9 installed at the end of the barrel 1. The end of the screw 3 extends out of the outer wall of the barrel 1 and is connected to the drive motor 9.

[0033] like Figure 4 As shown, the material is heated and plasticized during transportation in the barrel 1 so that it can be extruded from the die 4. In order to heat and plasticize the material, the screw 3 is hollow and a heating column 10 is installed inside the screw 3. The heating column 10 heats the material and is located inside the screw 3 away from the feed port 2 to prevent the heating column 10 from heating and plasticizing the material that has just entered from the feed port 2, which would cause the feed port 2 to be blocked by the plasticized material.

[0034] The product extruded from the die 4 is directly cooled and shaped by the fan 8 at the discharge port, eliminating the need for subsequent cooling and shaping processes. The product extruded from the die 4 is hot and somewhat viscous. If it is directly transported to the next cooling device for cooling and shaping, dust and impurities may adhere to the product during transportation, leading to a decrease in product quality. This invention places the fan 8 at the die 4 so that the product extruded from the die 4 is cooled and shaped by the air blown by the fan 8 before being transported to the next process. The cooled and shaped product can avoid the adhesion of dust and impurities during transportation, further ensuring product quality. In order to transport the cooled and shaped product to the next process, a conveyor 6 is installed at the end of the barrel 1 near the die 4. The conveyor 6 is located directly below the die 4 to receive the product discharged from the die 4. The fan 8 and the return water pipe 7 are fixed directly above the conveyor 6, so that the air blown by the fan 8 can simultaneously cool and shape the water vapor and the product.

[0035] like Figure 1 As shown, in order to fix the return water pipe 7 and the fan 8 above the conveyor 6, vertical mounting plates 13 are symmetrically installed on the conveyor 6. The end of the return water pipe 7 is connected to the side wall of the vertical mounting plate 13. A cover plate 14 is provided on the vertical mounting plate 13. The fan 8 is installed on the cover plate 14, and an opening is provided on the cover plate 14 directly opposite the position of the fan 8. The air blown out by the fan 8 blows through the opening onto the return water pipe 7 and the product extruded from the die 4 to achieve the purpose of synchronous cooling.

[0036] The heating column 10 is a device driven by a power supply. If the power supply of the heating column 10 is also located inside the screw rod 3, the power supply may overheat and be damaged. To prevent the power supply from being heated by the heating column 10, an insulation column 12 is connected to the end of the heating column 10. The end of the insulation column 12 away from the heating column 10 passes through the screw rod 3 and the barrel 1 and is connected to the inner wall of the vertical mounting plate 13. The power supply is installed inside the insulation column 12. The insulation column 12 can prevent heat from being transferred to the power supply and play a role in protecting the power supply. At the same time, the air blown out by the fan 8 can also cool the power supply. In addition, to prevent the heat generated by the heating column 10 from being transferred to the drive motor 9, a heat insulation layer is provided at the connection between the screw rod 3 and the drive motor 9.

[0037] like Figure 1 As shown, the conveyor 6 is mounted on the end of the barrel 1 near the die 4 to receive the product extruded from the die 4. In order to set the barrel 1 at the same horizontal height as the conveyor 6, a support plate 11 is installed below the barrel 1. The barrel 1 is mounted on the support plate 11, and the support plate 11 supports the barrel 1 at the same horizontal height as the conveyor 6, thereby reducing the height difference of the product falling from the die 4 onto the conveyor 6 and preventing the product from falling onto the conveyor 6 and deforming.

[0038] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A temperature-controlled plastic extrusion molding integrated machine, characterized in that, Includes a barrel (1), on which a feed inlet (2) is provided, a screw rod (3) is installed inside the barrel (1), and a die opening (4) is provided at the end of the barrel (1). The screw rod (3) is rotatable to push the material put in from the feed inlet (2) to the die opening (4). The barrel (1) is spirally wound with a cooling water pipe (5), and a return water pipe (7) is provided at the position opposite to the discharge direction of the die opening (4). The return water pipe (7) is connected to the cooling water pipe (5), and circulating water flows inside it. A fan (8) is installed at the position directly opposite the discharge direction of the return water pipe (7) and the die (4). The circulating water absorbs heat and evaporates in the cooling water pipe (5) to form steam and enters the return water pipe (7). After being cooled by the air blown out by the fan (8), it is converted into liquid and flows back into the cooling water pipe (5). At the same time, the product extruded from the die (4) is cooled and shaped by the air blown out by the fan (8).

2. The temperature-controlled plastic extrusion molding integrated machine according to claim 1, characterized in that, A drive structure is installed at the end of the barrel (1) away from the die opening (4), and the output end of the drive structure is connected to the screw rod (3). The drive structure includes a drive motor (9) installed at the end of the barrel (1), and the end of the screw rod (3) extends out of the outer wall of the barrel (1) and is connected to the drive motor (9).

3. The temperature-controlled plastic extrusion molding integrated machine according to claim 1, characterized in that, The screw rod (3) is hollow; A heating column (10) is installed inside the screw rod (3).

4. The temperature-controlled plastic extrusion molding integrated machine according to claim 1, characterized in that, A conveyor (6) is mounted on the end of the barrel (1) near the die opening (4), and the conveyor (6) is located directly below the die opening (4) to receive the product discharged from the die opening (4).

5. The temperature-controlled plastic extrusion molding integrated machine according to claim 4, characterized in that, The conveyor (6) is symmetrically equipped with vertical mounting plates (13), the end of the return water pipe (7) is connected to the side wall of the vertical mounting plate (13), the vertical mounting plate (13) is provided with a cover plate (14), and the fan (8) is installed on the cover plate (14).

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