WO2017066897A1

WO2017066897A1 - Water-cooling extruding machine and operating method therefor

Info

Publication number: WO2017066897A1
Application number: PCT/CN2015/000785
Authority: WO
Inventors: 吕昊
Original assignee: 吕昊
Priority date: 2015-10-21
Filing date: 2015-11-12
Publication date: 2017-04-27
Also published as: CN105252732B; CN105252732A

Abstract

A water-cooling extruding machine, comprising: a water-cooling extruding die assembly (1); a drawing roller assembly (2) provided below the water-cooling extruding die assembly (1); and a cutting apparatus (4) provided at a side of the drawing roller assembly (2). The water-cooling extruding machine further comprises a cooling water pipe (15), wherein a water inlet (151) of the cooling water pipe (15) is provided on the side wall of a die body, and a water outlet (152) thereof is provided in the middle of an extruding port (13). By spraying, by means of the cooling water pipe (15), cooling water from the water outlet (152) which is in the middle of the extruding port (13) into a hollow cavity of a product body. The water-cooling extruding machine avoids the problems of uneven cooling and bonding during production of multi-layer products, thereby solving the problem of being unable to produce multi-layer products due to poor air-cooling effect and uneven cooling.

Description

Water-cooled extruder and operation method thereof

Technical field

The invention relates to the field of extrusion machinery technology, in particular to a water-cooled extruder and an operation method thereof.

Background technique

In plastic extrusion molding equipment, plastic extruders are often referred to as mainframes, and the subsequent equipment plastic extrusion molding machines are called auxiliary machines. After more than 100 years of development, plastic extruders have been derived from the original single-screw twin-screw, multi-screw, and even no screw. At present, single-screw extruders are the most widely used, and plastic extruders can be used with Pipe, film, bar, monofilament, flat wire, packing tape, extruded net, sheet or sheet, profile, granulation, cable coating, etc., matching various plastic molding auxiliary machines to form various plastic extrusion molding production lines , the production of various plastic products. Therefore, plastic extrusion molding machines are one of the widely used models in the plastics processing industry, now or in the future. The extruder consists of an extrusion system, a transmission system and a heating and cooling system.

The extruder uses a specific shape of the screw to rotate in the heated barrel, and the plastic sent from the hopper is pushed forward to plasticize the plastic evenly. The plastic is extruded through the head and different shapes of the mold. Continuously required plastics of various shapes. In actual production, when the plastic is squeezed in the die, the plastic is evacuated to the two sides of the material dispersion zone through the material flow path. Due to the long stroke to the two sides, the intermediate material is accumulated more, resulting in uneven thickness of the die discharge. , greatly affecting the quality of production. In addition, when the multi-layer sheet product is extruded in the existing equipment, the product is deformed due to uneven heat dissipation during extrusion or air-cooling heat dissipation, and even the finished product is bonded together; in addition, the parallel extrusion of the die leads to The extruded product is drooping and deformed, which cannot meet the demand.

Summary of the invention

In order to overcome the deficiencies in the prior art, it is an object of the present invention to provide a water-cooled extruder and method of operation thereof.

The present invention is achieved by the following technical solutions:

A water-cooled extruder comprising a water-cooled extrusion die assembly, a traction roller assembly disposed below the water-cooled extrusion die assembly, and a cutting device disposed on a side of the traction roller assembly, the water-cooled extrusion die assembly including a die body, the die body is a hollow cavity, the die body is provided with a feed opening and an extrusion port, the inside of the die body is provided with a push rod for pressing molten material; and the die body is further disposed on the die a cooling water pipe inside the body, and a water inlet of the cooling water pipe is disposed on a sidewall of the die body, Its spout is placed in the middle of the extrusion port.

Preferably, the extrusion port has a cross section of one of a circular shape, a rectangular shape, a honeycomb shape, and a square shape.

Preferably, the technical solution proposes that the opening of the extrusion opening faces downward.

Preferably, the technical solution provides that the outer side and/or the inner side of the cooling water pipe is provided with a heat insulating layer. The thickness and length of the insulation layer depend on the properties of the different materials and products.

Preferably, in the above technical solution, a flow sensor and a water temperature sensor are disposed on the pipeline of the cooling water pipe.

Preferably, the traction roller assembly includes a first traction roller and a second traction roller arranged in parallel, and the first traction roller and the second traction roller adopt a zigzag traction roller.

Preferably, the end of the traction roller assembly is provided with a winding device.

The invention relates to a method for operating a water-cooled extruder, which comprises the above water-cooled extruder, comprising at least: extruding molten material through a push rod disposed inside a die body to extrude a product body from an extrusion port, and cooling in the cooling water pipe; The water is sprayed out through the water spray port disposed in the middle of the extrusion port to cool the product body. After cooling, the product body is transported to the cutting device through the traction roller assembly for cutting, and the cooling water in the product body is discharged during cutting.

Preferably, the molten material is extruded through an extrusion port to form a product body having a hollow cavity, and the cooling water in the cooling water pipe is sprayed out through the water spray port and then enters the hollow body of the product body. The cooling water enters the hollow cavity body to avoid the problem of uneven cooling or even adhesion during production of the product body.

In the above technical solution, after the cutting device cuts the product body, the product body of the flexible material is wound by a winding device; and the product body of the hard material is processed by a method of blowing the air drying head. Further, in the manufacture of the product body of the flexible material, the zigzag traction roller is used to conduct liquid distribution inside the hollow body of the product body, and the length of the product body is determined according to actual needs.

Compared with the prior art, the superior effect of the present invention is that the opening of the extrusion port is arranged downward to ensure that the products extruded from the extrusion port do not adhere to each other, and the extruded product passes through the traction roller assembly. The lower conveying overcomes the problem of sag deformation caused by the gravity of the product; the cooling water is used to introduce the cooling water, and the cooling water is sprayed from the water spray hole in the middle of the extrusion port to enter the hollow cavity of the product body to avoid the multilayer product body The problem of uneven cooling and even bonding during production solves the problem that the prior art adopts poor air cooling effect, uneven cooling, and even cannot produce multiple layers; the structure is simple, the operation is simple, and the normal production of various materials is ensured. .

DRAWINGS

Figure 1 is a schematic view showing the structure of the water-cooled extruder;

Figure 2 is a schematic structural view of the water-cooled extrusion die assembly of Figure 1;

Figure 3 is an enlarged schematic view of the water-cooled extrusion die assembly of Figure 2 in the A direction.

The reference numerals are as follows:

1-Water-cooled extrusion die assembly, 11-die body, 12-feed port, 13-extrusion port, 14-push rod, 15-cooling water pipe, 151-inlet, 152 spout, 2-drawing roller Assembly, 21 - first traction roll, 22 - second traction roll, 3-winding device, 4-cutting device.

detailed description

The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

As shown in Figures 1, 2 and 3, a water-cooled extruder of the present invention comprises a water-cooled extrusion die assembly 1, a traction roller assembly 2 disposed below the water-cooled extrusion die assembly 1, and a cutting device 4 on one side of the traction roller assembly 2; the water-cooled extrusion die assembly 1 includes a die body 11, the die body 11 is a hollow cavity body, and the die body 11 is provided with a feed port 12 and The extrusion port 13 is provided with a push rod 14 for extruding molten material in the interior of the die body 11 and a cooling water pipe 15 disposed inside the die body 11 . The water inlet 151 of the cooling water pipe 15 is disposed on the die body 11 . On the side wall, a water spout 152 is provided in the middle of the extrusion port 13. The cross section of the extrusion port 13 is one of a circular shape, a rectangular shape, a honeycomb shape, and a square shape, or the structure of the extrusion port 13 is made according to actual conditions, and the final purpose is to make the water spray port 152 be disposed at the extrusion port 13 in the middle. In the present embodiment, the extrusion port 13 has a cross section of a square shape.

In the above embodiment, a plurality of water spouts 152 are provided in the extrusion port 13. The opening of the extrusion opening 13 faces downward, ensuring that there is no adhesion between the shaped product bodies extruded from the extrusion port 13, and the extruded product body is conveyed downward through the traction roller assembly 2, overcoming the product body itself. The deformation problem caused by gravity. In this embodiment, the opening of the extrusion port 13 is downwardly facing, but the opening direction of the extrusion port 13 of the present invention is not limited to the opening facing downward, and the opening direction of the extrusion port 13 is designed to be open to the right or according to the cooling condition of the cooling water. Extrude parallel to the left.

In the above embodiment, the outer side and/or the inner side of the cooling water pipe 15 is provided with a heat insulating layer (not shown), and the thickness and length of the heat insulating layer are determined according to the properties of different materials and products. The cooling water pipe 15 is used to introduce the cooling water, which solves the problem of poor air cooling effect and uneven cooling in the prior art, and the cooling water is introduced through the cooling water pipe 15 to ensure that the extruded product bodies are not bonded to each other after being shaped. Since the heat insulating layer is provided on the outer side and/or the inner side of the cooling water pipe 15, the heat exchange between the liquid entering the cooling water pipe 15 and the molten material is reduced, and the working condition of the water-cooled extrusion die assembly 1 is not affected.

In the above embodiment, the flow pipe of the cooling water pipe 15 is provided with a flow sensor and a water temperature sensor (not shown). Specifically, the water temperature sensor is connected to a controller (not shown), and is connected to the controller for The refrigeration device (not shown) that reduces the liquid entering the cooling water pipe 15 is shown. The water temperature sensor collects a temperature signal of the liquid in the cooling water pipe 15 . When the temperature value of the liquid in the collected cooling water pipe 15 is greater than a preset temperature threshold, the controller controls the operation of the refrigeration device, thereby reducing the entering the cooling water pipe 15 . The temperature of the liquid. The flow sensor is also connected to the controller, and the controller is connected to a valve body (not shown) provided on the cooling water pipe 15, and the flow rate of the cooling water pipe 15 is controlled by the valve body. The controller uses an ATmega64 processor and is prior art. In addition, the temperature of the cooling water in the cooling water pipe 15 is determined according to the temperature of the molten material inside the die body 11, thereby ensuring normal production of different materials.

In the above embodiment, the traction roller assembly 2 includes a first traction roller 21 and a second traction roller 22 which are juxtaposed, and the first traction roller 21 and the second traction roller 22 employ a zigzag traction roller. The first pulling roller 21 and the second pulling roller 22 serve as a guiding conveying device for the product body extruded and shaped from the extrusion port 13, and ensure that the extruded product body is smoothly conveyed to the cutting device 4; The end of the winding device 3 is provided to ensure the on-demand cutting and winding of the product. The winding device 3 is provided with a zigzag traction roller, and the product body is wound by a zigzag traction roller. In addition, when the product is cut and wound, the cooling water sprayed from the water spray port 152 is collected, and the cut product body is dried.

The method for operating a water-cooled extruder according to the present invention comprises: extruding molten material from an extrusion port 13 through a push rod 14 disposed inside the die body 11 to form a product body, and cooling the cooling water in the water pipe 15 The water spray port 152 disposed in the middle of the extrusion port 13 is sprayed to further cool the product body, and the product body is cooled and then sent to the cutting device 4 through the traction roller assembly 2 for cutting, and the cooling water in the product body is discharged during cutting. . Further, the molten material is extruded through the extrusion port 13 to form a product body having a hollow cavity. The cooling water in the cooling water pipe 15 is sprayed through the water spray port 152 and then enters the hollow body of the product body.

In this embodiment, after the cutting device 4 cuts the product body, the product body of the flexible material is wound by the winding device 3; the product body of the hard material is processed by a method of blowing the air drying head.

The present invention is not limited to the above-described embodiments, and any variations, modifications, and alterations that may be conceived by those skilled in the art are intended to fall within the scope of the present invention without departing from the spirit of the invention.

Claims

A water-cooled extruder comprising a water-cooled extrusion die assembly, a traction roller assembly disposed below the water-cooled extrusion die assembly, and a cutting device disposed on one side of the traction roller assembly; the water-cooled extrusion The die assembly includes a die body, the die body is a hollow cavity body, the die body is provided with a feed opening and an extrusion port, and the inside of the die body is provided with a push rod for pressing molten material; The cooling water pipe disposed inside the die body, the water inlet of the cooling water pipe is disposed on the side wall of the die body, and the water spray port is disposed in the middle of the extrusion port.
A water-cooled extruder according to claim 1, wherein said extrusion port has a cross section of one of a circular shape, a rectangular shape, a honeycomb shape, and a square shape.
A water-cooled extruder according to claim 1, wherein the opening of the extrusion port faces downward.
A water-cooled extruder according to claim 1, wherein a heat insulating layer is provided on an outer side and/or an inner side of said cooling water pipe.
A water-cooled extruder according to claim 1, wherein a flow sensor and a water temperature sensor are provided on the pipeline of the cooling water pipe.
A water-cooled extruder according to claim 1, wherein said traction roller assembly comprises a first traction roller and a second traction roller arranged in parallel, and said first traction roller and said second traction roller are Serrated traction roller.
A water-cooled extruder according to claim 1 or 6, wherein the end of the traction roller assembly is provided with a winding device.
The water-cooling extruder of claim 1 is characterized in that it comprises at least: extruding molten material from the extrusion port to form a product through a push rod disposed inside the die body. The body, at the same time, the cooling water in the cooling water pipe is sprayed out through the water spray port disposed in the middle of the extrusion port to cool the product body, and the product body is cooled and transported to the cutting device through the traction roller assembly for cutting, and the product body is cut during cutting. The cooling water inside is discharged.
The method for operating a water-cooled extruder according to claim 8, wherein the molten material is extruded through an extrusion port to form a product body having a hollow cavity, and the cooling water in the cooling water pipe is passed through the water spray port. After ejection, it enters the hollow body of the product body.
The method for operating a water-cooled extruder according to claim 8, wherein after the cutting device cuts the product body, the product body of the flexible material is wound by a winding device; The product body is treated by blowing a dry head.