CN101905518B - Material distributing device of extruder - Google Patents

Abstract

A material distribution device for an extruder, which is composed of a feed die, an independent channel conversion die, a confluence die and a discharge die. The feed die is provided with several feed ports, and the feed ports are distributed through The flow channel is distributed as several circular independent flow channels arranged horizontally; the inlet end of the independent flow channel conversion mold is provided with an inlet corresponding to the circular independent flow channel of the feed mold one by one, and the inlet is arranged side by side at the outlet end through the gradual change flow channel. The strip-shaped independent flow channel outlet; the inlet end of the confluence die is provided with a feed port corresponding to the strip-shaped independent flow channel of the independent flow channel conversion die, and the feed port converges into the overall discharge port through the gradient flow channel; the confluence die The discharge port is connected to the discharge port of the discharge die. The invention has the advantages of simple structure, low production cost and convenient operation. By replacing the confluence die and the discharge die, the compounding of multi-section materials in the width direction and the compounding of multi-layer materials in the thickness direction can be realized, thereby greatly improving the utilization rate of production equipment.

Description

Distribution device for material extruder

technical field

The invention relates to a distributing device for producing plastic plates, sheets and films, in particular to a material distributing device for an extruder.

Background technique

The current distributors mostly produce multi-layer composite materials in the thickness direction, and can only produce composites of two materials in the width direction. The installation and commissioning process is long, which affects production efficiency and has a high scrap rate.

Such as the extrusion die head with double hanger structure, there are two material channels in the die head, the two materials communicate with the two flow channels on the transition body one by one, and the material inlets at the upper ends of the two flow channels are respectively connected to one Two extruders, the material outlets at the lower ends of the two material passages are connected; the materials in the two extruders respectively flow through the corresponding flow passages and material passages, and then flow out from the material outlets at the lower end of the material passages and combine together. The two materials flow through this distributor, allowing the compounding of the two materials in the width direction.

There is also a distributor that can produce multi-layer composites in the width direction and multi-stage composites in the thickness direction. When producing multi-segment composite materials in the width direction, it is necessary to replace the guide part first to close the main channel, and then use the throttling block to close a pair of symmetrical sub-runners, and set up a guide groove on the guide part to replace the original channel. The two materials distributed in the Y direction are guided to the X direction and collected in the discharge channel, so as to realize the compounding of the two materials in the width direction. When producing multi-section composite materials in the thickness direction, the opening and closing of each flow channel is selected according to the number of layers of the material to realize the compounding of multiple materials in the thickness direction.

Contents of the invention

The technical problem to be solved by the present invention is to provide a distributor with compact structure, simple operation and the ability to produce multi-stage composite co-extruded materials in the width direction and thickness direction in view of the deficiencies of the prior art.

The technical problem to be solved by the present invention is achieved through the following technical solutions. A material distribution device for an extruder is characterized in that: The above-mentioned feeding mold is provided with several material inlets, and the material inlets are distributed into several circular independent flow channels arranged horizontally through the distribution flow channel; One-to-one corresponding inlet, the inlet is set as a side-by-side bar-shaped independent channel outlet through the gradual change channel at the outlet; The feed port converges into the overall discharge port through the gradient flow channel; the discharge port of the confluence die is connected to the discharge port of the discharge die

The technical problem to be solved by the present invention can be further realized through the following technical solutions. The confluence mold is a material confluence mold in the width direction, and its overall discharge port is a confluence outlet arranged horizontally.

The technical problem to be solved by the present invention can be further realized through the following technical solutions. The confluence mold is a material confluence mold in the thickness direction, and its integral discharge port is a confluence outlet arranged longitudinally.

The present invention is composed of a feed die, an independent flow channel conversion die, a confluence die and a discharge die. Various materials enter the independent flow channel through the distribution flow channel along the extrusion direction and then gather together through the confluence die. Compared with the prior art In comparison, the structure is simple, the production cost is low, and the operation is convenient. By replacing the confluence die and the discharge die, the compounding of multi-section materials in the width direction and the compounding of multi-layer materials in the thickness direction can be realized, which greatly improves the utilization rate of production equipment. .

Description of drawings

Fig. 1 is a three-dimensional exploded schematic view of the present invention.

Fig. 2 is a schematic structural diagram of a confluence die converging in a width direction.

FIG. 3 is a top view of FIG. 2 .

Fig. 4 is a schematic structural diagram of a confluence die converging in a thickness direction.

FIG. 5 is a top view of FIG. 4 .

Detailed ways

A material distribution device for an extruder, which is composed of a feed die 5, an independent runner conversion die 6, a confluence die 7 and a discharge die 8 connected together by bolts, and the feed die 5 is provided with Several material inlets 4, the material inlets 4 are distributed into several circular independent flow channels 3 arranged horizontally through the distribution flow channel; the inlet end of the independent flow channel conversion mold 6 is provided with a one-to-one correspondence with the circular independent flow channel 3 of the feed mold The inlet and the inlet pass through the gradient flow channel, and the outlet end is set as a side-by-side strip-shaped independent flow channel outlet 2; the inlet end of the confluence mold 7 is provided with a feed port corresponding to the strip-shaped independent flow channel 2 of the independent flow channel conversion mold 6 10. The feed ports 10 are converged into the overall discharge port 1 through the gradual flow channel; the discharge port 1 of the confluence die 7 is connected to the feed port 9 of the discharge die 8 . The converging die 7 is a material converging die in the width direction, and its overall outlet 1 is a converging outlet arranged horizontally, and the feed inlet rotates through a gradual flow channel and converges into an overall outlet. The confluence die 7 is a material confluence die in the thickness direction, and its integral discharge port 1 is a converging exit arranged longitudinally, and the feed ports are directly converged into the integral discharge port through the gradient flow channel.

During implementation, the present invention is installed between the extruder and the extrusion flat die head, the extruder is docked with the feed port 4 of the feed die 5, and different molten materials enter the feed of the feed die 5 from the extruder Port 4, through the distribution flow channel in the feed die 5, enters several circular independent flow channels 3 arranged horizontally, enters the independent flow channel conversion die 6 along the extrusion direction, and passes through the inner flow channel of the independent flow channel conversion die 6, the shape is as follows: After the circles become side-by-side strips, they enter the confluence die 7, pass through the runners in the confluence die 7, and finally different molten materials converge together, and come out from the discharge port 9 of the discharge die 8 to form blanks.

The confluence die 7 is a material confluence die in the width direction. After entering the confluence die 7, the materials pass through the flow channel in the confluence die to converge into a horizontal whole and enter the discharge die 8 through the discharge port 1. The confluence die 7 is a material confluence die in the thickness direction. After the material enters the confluence die 7, it passes through the flow channel in the confluence die to converge into a longitudinal whole and enters the discharge die 8 through the discharge port 1.

By using the present invention, it is only necessary to replace the manifold 7, and the same extrusion molding equipment can realize the compounding of various materials in the width direction and the compounding of various materials in the thickness direction, and can also produce The single-material plate greatly improves the utilization rate of production equipment and reduces production costs.

Claims (3)

1. the material distribution device of an extruder; It is characterized in that: combine by charging mould, independent runner modulus of conversion, conflux mould and discharging mode; Described charging mould is provided with several material inlets, and material inlet is assigned as the independent runner of some circles through the over-allocation runner; Independent runner modulus of conversion entrance point is provided with and the import one to one of the circular independent runner of charging mould, and import is set to bar shaped independence runner exit side by side through the gradual change runner at the port of export; The entrance point of mould of confluxing is provided with the corresponding charging aperture of bar shaped independence runner with independent runner modulus of conversion, and charging aperture converges through the gradual change runner and is whole discharging opening; The conflux discharging opening of mould and the material mouth of discharging mode connects.

2. the material distribution device of extruder according to claim 1, it is characterized in that: the mould that confluxes is that the material of width converges mould, its whole discharging opening is the outlet that converges of lateral arrangement.

3. the material distribution device of extruder according to claim 1, it is characterized in that: the mould that confluxes is that the material of thickness direction converges mould, the converge outlet of its whole discharging opening for vertically arranging.

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