CN2120666U - Multichamber common extrusion film model machine - Google Patents

Abstract

The utility model relates to a multichamber common plastic film extruding machine, which is composed of plastic extruding machines, a raw material dispenser, a film opening, and a plastic film traction frame which are curled. The utility model is characterized in that a plurality of plastic extruding machines are distributed on the same flat surface circumference which is parallel to the ground, and the output interface of the plastic extruding machines are respectively connected with the corresponding input interfaces of the raw material distributor which is positioned on the center of circle of the same circumference. The utility model which is of high work efficiency has advantages of producing qualified six composite plastic film layers and simplifying the loading of the complete machine and filling process.

Description

Multichamber common extrusion film model machine

The utility model relates to a kind of multi-layer co-extruded plastic film machine, belongs to plastic film mechanical equipment, and it is by plastic extruder, feed distributor, film mouth and plastic film hitch frame, the curling composition.

Along with the develop rapidly of industrial and agricultural production, single layer plastics films has not satisfied diversified, complicated application demand, therefore at present domestic bilayer or three layers of composite plastic film product of having occurred.The multilayer composite plastic film is as required, and the plastic raw materials of multiple heterogeneity is made laminated film through the extrusion molding of special plant equipment, and it can have the intrinsic various physical and chemical performances of various raw material simultaneously concurrently, to reach widely applicable purpose.Therefore, theoretically, composite bed the more, film comprehensive superior function the more, its application surface is promptly wider.

Existing MULTILAYER COMPOSITE plastic film machine equipment, all by corresponding multi-section plastic extruders, feed distributor, film mouth and plastic film hitch frame, the curling composition, each extruder with distributor syndeton place, mix mutually with other raw material for fear of the raw material seepage of being carried, their defeated materials flow road is not to design at grade but raising successively.Like this, compound level the more, then before between extruder output interface and the film mouth of which floor raw material fore-and-aft distance just far away, the plasticizing raw material flow process that is extruded i.e. length more, thereby its pressure loss will heal greatly.And this pressure loss fracture will occur when the plasticizing raw material enters when acquiring a certain degree in the film mouth inside spin body runner, and this will have a strong impact on the quality of composite plastic film.Just because of above-mentioned technical barrier, existing equipment can only be designed into three-layer composite structure, if level is many again, its film product of producing does not just reach and given the phase performance.

The utility model purpose is: overcome a prior art difficult problem, a kind of multi-layer co-extruded plastic film machine that reaches six layers is provided.

The utility model is achieved in that same as the prior art, it is also by plastic extruder, feed distributor, film mouth and plastic film hitch frame, the curling composition, different is: the multi-section plastic extruder be parallel on the same planar circumferential on ground distribute, their output interface links to each other with the corresponding input interface of the feed distributor that is positioned at the same center of circle respectively, other raw material shunting is overlapped the junction that intersects a seal cartridge all is housed in the raw material runner in distributor in each input interface and the distributor.

When realizing the utility model, the face of being tightly connected between feed distributor and the film mouth can be designed to stepped construction.

On the such scheme basis, the utility model also can be realized like this: the feeding spiro rod fluxing zone in the plastic extruder is designed to wavy texture.

In order to enhance productivity, minimizing is because of changing the man-hour that screen pack delayed on the plastic extruder, the utility model also can be realized like this: on above-mentioned various schemes basis, between extruder output interface and distributor input interface, adorn a plate lever filter screen structure, lever one termination of this structure is that the strong point is fixed on the extruder output interface outer wall, the centre a bit links to each other with the plate top, have on the plate face, following two holes that screen pack is installed, the plate face is plugged between extruder output interface and the distributor input interface, and the last filter mesh of plate face is just corresponding to the connector of extruder and distributor when the lever force side presses down, following filter mesh then exposes outside the machine.

The utility model has the advantages that:

1. can produce six layers of qualified composite plastic film, thereby satisfy the demand of various multi-functional, high performances to plastic sheeting in the economic construction.

2. the multi-section extruder is all arranged at grade and is joined with distributor, therefore each layer raw material all identical to the flow process distance of film mouth, be equal to the raw material flow process distance in the individual layer plastic film machine in the prior art, just guaranteed that so also each extruder brings into play, makes each layer plasticizing raw material all to keep normal continuous state before the compound runner of arrival to the effectiveness of pressure that raw material produces.

3. the seal cartridge of each layer raw material input duct and other raw material shunting cover interconnection place suit and the staged between distributor and the film mouth face that is tightly connected in distributor, thus all solve the raw material seepage effectively and mixed the technical problem that reduces adhesive force, weakens the runner internal pressure with other raw material mutually.

4. the multi-section extruder is all adorned at grade, and this makes installation, dismounting and the filler operation of complete machine greatly simple and easy.

5. the feeding spiro rod fluxing zone in the extruder is adopted wavy texture, fully guaranteed quality of forming film thereby can make feeding spiro rod that the various raw materials more than 80% are improved plasticizing power, transporting velocity and improved raw material runner internal pressure.

6. plate lever filter screen structure, can guarantee that screen pack damages after, under non-stop-machine situation be replaceable it, this needs to shut down in compared to existing technology, draping cost several hrs more after the cooling, has improved production efficiency greatly.

Fig. 1 is feed distributor and a film mouth structure cutaway view among the utility model embodiment.

Fig. 2 is the utility model general structure schematic top plan view.

Fig. 3 be among Fig. 2 A-A to the part section structural representation.

Fig. 4 is a feeding spiro rod structural representation among the utility model embodiment.

Below in conjunction with drawings and Examples the utility model is done further narration:

With reference to Fig. 2, six plastic extruders 14～19th in this example, by being loaded on the same plane that is parallel to ground, they on same circumference, five equilibrium arranging, the feed distributor 20 and the film mouth 21 that connect as one then are loaded on the center of circle of above-mentioned circumference.The output interface of six extruders joins with distributor 20 corresponding input interfaces respectively, and extruder, distributor and film mouth have just constituted an interconnective work system like this.In this system, because all being in same plane, their feeding port, each plastic extruder all equates with line-spacing between the film mouth, so the raw material runner of every layer of plastic sheeting is all long in the same manner, the problem of plural layers quality can not appear far influencing owing to the raw material stroke; And the feeding port of each extruder also all is equal altitudes apart from ground, and this has also made things convenient for operating personnel's filler operation.

The structure that extruder 14,17 among Fig. 3 and head join has been showed feed distributor 20, film mouth 21, the bellows chamber 22 that is used for air blast and blower fan 24, has been used for vane 23 that plastic sheeting that film mouth 21 spues propels the price of, the screw rod 25 of transferring raw material in the extruder.

In order to improve plasticizing efficiency, to increase the extrusion pressure of machine raw material, this example has adopted the wavy screw rod 25 of structure shown in Figure 4.So-called " wavy " also just adopts this structure on the fluxing zone 26 of whole screw rod 25.

Fig. 1 has showed that feed distributor and film mouth are combined into one the structure as head.After raw material enters head from extruder through the input interface 12 of distributor, just arrive in separately the conveyor screw by each gravity flow cover, it is a co-extrusion mouth 11 that last six spirochetal delivery outlets compile, and is six layers of plastic sheeting from what extrude here.As we know from the figure, a seal cartridge 13 is all adorned in the raw material runner in each input interface 12 and other raw material shunting cover 10 intersections, so just can prevent before certain one deck raw material is in entering own shunting cover and infiltrate other shunt overlap in; Conveyor screw 3～8 is all distinguished corresponding raw material shunting cover, and they in fact also are six layers of tube-in-tube structures, and helix, the pressure when entering co-extrusion mouth 11 in order to the increase raw material are just arranged on the sleeve wall; Film mouth body 2 is trapezoidal with the abutted surface 1 of feed distributor, and this also is in order to guarantee the corresponding one by one connection of each layer raw material conveyor screw in each layer raw material runner and the film mouth in the distributor, not infiltrate other conveyor screw from abutted surface and raw material does not take place; Adjust ring 9 and be in order to adjust the diameter of the plastic sheeting post that the film mouth extruded.

The utility model can be used as the co-extrusion machine of six layers of plastic sheeting at most, but also can be according to concrete needs, reduces the platform number of plastic extruder and produces and be less than six layers plastic sheeting.

Claims (4)

1, multi-layer co-extruded plastic film machine, by plastic extruder, feed distributor, film mouth and plastics hitch frame, the curling composition, it is characterized in that: the multi-section plastic extruder be parallel on the same planar circumferential on ground arrange, their output interface links to each other with being positioned at the corresponding input interface of round feed distributor in the heart respectively, the raw material runner in distributor in each input interface overlaps the junction that intersects with the shunting of other raw material a seal cartridge all is housed.

2, plastic film machine according to claim 1 is characterized in that: the face of being tightly connected between feed distributor and the film mouth is a stepped construction.

3, plastic film machine according to claim 1 and 2 is characterized in that: the fluxing zone of the feeding spiro rod in the plastic extruder adopts wavy texture.

4, plastic film machine according to claim 1, it is characterized in that: the screen pack that is loaded on plastic extruder output interface place is a plate lever-type structure, lever one termination is that the strong point is fixed on the extruder delivery outlet outer wall, the centre a bit links to each other with the plate top, have upper and lower two hole, plate faces that screen pack is installed on the plate face and be plugged between extruder output interface and the distributor input interface, the last filter mesh of plate face just then exposes outside the machine corresponding to the connector of extruder and distributor, following filter mesh when the lever force side presses down.The following filter mesh of plate face just then exposes outside the machine corresponding to connector place, last filter mesh when lifting on the lever force side.

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