CN208375764U - A kind of double-deck feed three-level foaming runner plastic extrusion die - Google Patents

Abstract

The utility model discloses a kind of double-deck feed three-level foaming runner plastic extrusion dies, including die main body, feed inlet, torpedo body, upper runner, lower flow channel, discharge port and product, the outer wall of the die main body offers inlet port and outlet port, the product that screw is fixedly connected with die main body is provided on the discharge port, upper runner and lower flow channel are connected between the inlet port and outlet port, torpedo body is provided between the upper runner and lower flow channel, the inside of the upper runner and lower flow channel is provided with the area Tun Liao, level-one foaming zone and second level foaming zone, level-one foaming zone entrance is provided between the area Tun Liao and level-one foaming zone, second level foaming zone entrance is provided between the level-one foaming zone and second level foaming zone.The utility model bilayer is fed three-level foaming runner plastic extrusion die, is foamed by three-level, and uniform in foaming is fine and close, and shunting foaming reduces production cost.

Description

A kind of double-deck feed three-level foaming runner plastic extrusion die

Technical field

The utility model relates to technical field of mold, specially a kind of double-deck feed three-level foaming runner plastics extrusion die Tool.

Background technique

Foamed board is also known as PVC expansion sheet and An Di plate, and chemical component is polyvinyl chloride (Polyvinyl chloride), So also referred to as foamed polyvinyl chloride plate.It is widely used in car, railway carriage ceiling, cabinet sandwich layer, interior decoration plate, builds Beyond the region of objective existence wallboard, interior trim plate, office, house, public place building compartment are built, commercial decorative frame, is hung used in dustless room plate Top plate, screen printing, computer lettering, advertisement mark, panel, the mark industries such as plate photograph album plate and chemical anti-corrosion engineering, heat at Type part, cold storage board, special prepressing reserving works, environmentally friendly formwork, sports equipment, cultivation material, the moisture-proof facility in beach, water-fast material Material, art materials and various light partitions replace glass ceiling etc..

When producing thicker foamed board, material how is set sufficiently to foam, even foaming is always core technology problem.For The thickness for increasing production board must increase the size of discharge port, but the size for increasing discharge port can bring foaming cavity The problem of interior pressure reduces, it will cause the non-uniform consequences that foams for pressure reduction, if needing to purchase more using common practices Powerful extruder, to improve foaming cavity internal pressure, this will increase the cost of manufacturing enterprise again.

Utility model content

The purpose of this utility model is to provide a kind of double-deck feed three-level foaming runner plastic extrusion dies, pass through three-level Foaming, uniform in foaming is fine and close, and shunting foaming reduces production cost, can solve the problems of the prior art.

To achieve the above object, the utility model provides the following technical solutions: a kind of double-deck feed three-level foaming runner modeling Expect extrusion die, including die main body, feed inlet, torpedo body, upper runner, lower flow channel, discharge port and product, the die main body Outer wall offer inlet port and outlet port, the product that screw is fixedly connected with die main body is provided on the discharge port, It is connected with upper runner and lower flow channel between the inlet port and outlet port, is provided with torpedo between the upper runner and lower flow channel Body, the upper runner are internally provided with the first area Tun Liao, the first level-one foaming zone and the first second level foaming zone, and described first stores up Perforation is provided with the first level-one foaming zone entrance, first level-one foaming zone and first between material area and the first level-one foaming zone Perforation is provided with the first second level foaming zone entrance between second level foaming zone, the lower flow channel be internally provided with the second area Tun Liao, Second level-one foaming zone and the second second level foaming zone, perforation is provided with the between the area second Tun Liao and the second level-one foaming zone Two level-one foaming zone entrances, perforation is provided with the foaming of the second second level between second level-one foaming zone and the second second level foaming zone Area's entrance.

Preferably, the inner space of first level-one foaming zone is greater than the inner space in the first area Tun Liao, the first second level The inner space of foaming zone is greater than the inner space of the first level-one foaming zone, and the inner space of the second level-one foaming zone is greater than second The inner space in the area Tun Liao, the inner space of the second second level foaming zone are greater than the inner space of the second level-one foaming zone.

Preferably, width of the width of first level-one foaming zone entrance less than the first area Tun Liao, the foaming of the first second level The width of area's entrance is less than the width of the first level-one foaming zone, and the width of the second level-one foaming zone entrance is less than the second area Tun Liao Width, the width of the width of the second second level foaming zone entrance less than the second level-one foaming zone.

Preferably, the upper runner and lower flow channel penetrate through connection at feed inlet, and upper runner and lower flow channel are discharging Connection is penetrated through at mouthful.

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

The utility model bilayer is fed three-level foaming runner plastic extrusion die, and the shunting for passing through upper runner and lower flow channel supplies Material ensure that the feed pressure in each pipeline, collect band again together after material foaming, be realized using small-power extruder The feed demand of slab reduces production cost, twice foaming and extruding of the material inside process lower flow channel and upper runner Process ensure that finished product bubble even compact, improve product quality.

Detailed description of the invention

Fig. 1 is the overall structure diagram of the utility model.

In figure: 1 die main body, 2 feed inlets, 3 torpedo bodies, 4 upper runners, 41 first areas Tun Liao, 42 first level-one foaming zones, Material is stored up in 43 first second level foaming zones, 44 first level-one foaming zone entrances, 45 first second level foaming zone entrances, 5 lower flow channels, 51 second Area, 52 second level-one foaming zones, 53 second second level foaming zones, 54 second level-one foaming zone entrances, 55 second second level foaming zones enter Mouth, 6 discharge ports, 7 products.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

The runner plastic extrusion die referring to Fig. 1, a kind of double-deck feed three-level foams, including die main body 1, feed inlet 2, Torpedo body 3, upper runner 4, lower flow channel 5, discharge port 6 and product 7, the outer wall of die main body 1 offer feed inlet 2 and discharge port 6, It processes raw material and foams from the inside that feed inlet 2 enters upper runner 4 and lower flow channel 5, it is solid that screw is provided on discharge port 6 The product 7 for determining connecting mold main body 1 is connected with upper runner 4 and lower flow channel 5 between feed inlet 2 and discharge port 6, upper runner 4 is under Runner 5 is all provided at feed inlet 2 and discharge port 6 and is set to perforation connection status, processes raw material and is foamed by shunting, be ensure that each The feed pressure of inner cavity of pipe is pooled to discharge port 6 after foaming, guarantee the sufficient supply to process raw material, upper runner 4 and lower flow channel Torpedo body 3 is provided between 5, processing raw material for the entrance of feed inlet 2 is shunted in torpedo body 3, and upper runner 4 is internally provided with First area Tun Liao 41, the first level-one foaming zone 42 and the first second level foaming zone 43, the first area Tun Liao 41 and the first level-one foaming zone Perforation is provided with the first level-one foaming zone entrance 44 between 42, and the inner space of the first level-one foaming zone 42 is greater than the first area Tun Liao 41, so that raw material is had a slightly foamed process, the first level-one foaming zone entrance 44 in the inside of the first level-one foaming zone 42 Width less than the first area Tun Liao 41, this first narrow level-one foaming zone entrance 44 can effectively improve intracavitary material pressure Power passes through the pressure of the first level-one foaming zone entrance 44 when material enters the first level-one foaming zone entrance 44 from the first area Tun Liao 41 Contracting, the minute bubbles for making material foam are uniform, and perforation is provided with the between the first level-one foaming zone 42 and the first second level foaming zone 43 One second level foaming zone entrance 45, the inner space of the first second level foaming zone 43 are greater than the first level-one foaming zone 42, make material can be with It further foams in the inside of the first second level foaming zone 43, the width of the first second level foaming zone entrance 45 foams less than the first level-one Area 42, it is more uniform in the minute bubbles that material makes material foam by the compression of the first second level foaming zone entrance 45, lower flow channel 5 It is internally provided with the second area Tun Liao 51, the second level-one foaming zone 52 and the second second level foaming zone 53, the second area Tun Liao 51 and second Perforation is provided with the second level-one foaming zone entrance 54 between level-one foaming zone 52, and the inner space of the second level-one foaming zone 52 is greater than Second area Tun Liao 51 allows raw material to have a slightly foamed process, the second level-one hair in the inside of the second level-one foaming zone 52 The width of bleb district entrance 54 can effectively improve chamber less than the second area Tun Liao 51, this second narrow level-one foaming zone entrance 54 Interior material pressure, material pass through the second level-one foaming zone entrance when entering the second level-one foaming zone entrance 54 from the second area Tun Liao 51 54 compression, the minute bubbles for making material foam are uniform, penetrate through and set between the second level-one foaming zone 52 and the second second level foaming zone 53 It is equipped with the second second level foaming zone entrance 55, the inner space of the second second level foaming zone 53 is greater than the second level-one foaming zone 52, makes object Material can further foam in the inside of the second second level foaming zone 53, and the width of the second second level foaming zone entrance 55 is less than the 2nd 1 Grade foaming zone 52, it is more uniform in the minute bubbles that material makes material foam by the compression of the second second level foaming zone entrance 55.

Material is further separated into upper runner 4 and lower flow channel 5, the material in upper runner 4 after entering feed inlet 2 at torpedo body 3 The first area Tun Liao 41 is initially entered, into after the first area Tun Liao 41, material is in the first area Tun Liao 41 by the mixing of short time, object Material is by the first narrow level-one foaming zone entrance 44, into the first level-one foaming zone 42, this narrow the first level-one foaming Area's entrance 44 can effectively improve intracavitary material pressure.The inner space of first level-one foaming zone 42 is big compared with the first area Tun Liao 41, Material has a slightly foamed process in the first level-one foaming zone 42, forms minute bubbles gas core, then material can pass through again The the first second level foaming zone entrance 45 shunk enters the first second level foaming zone 43.Enter in the first second level foaming zone by being retracted When mouth 45, the minute bubbles gas core of the generation inside material have passed through the process of a mixing and compression, this can make minute bubbles gas core It is more evenly fine and close.Into after the first second level foaming zone 43, the space of the first second level foaming zone 43 is than the first level-one foaming zone 42 Bigger, material will do it in the first second level foaming zone 43 and more fully foam, and the principle of lower flow channel 5 is identical as upper runner 4, After the completion of material foaming, lower flow channel 5 is collected at discharge port 6 with the material in upper runner 4, is finally extruded discharge port 6, is formed Slab, material will do it last time under normal temperature and pressure state and foam, and material is inside by lower flow channel 5 and upper runner 4 The process for foaming and squeezing twice, ensure that finished product bubble even compact, improves product quality, be foamed by shunting, and use Small-power extruder realizes the material supply of production slab, reduces production cost.

In summary: the utility model bilayer is fed three-level foaming runner plastic extrusion die, by upper runner 4 and flows down The shunting in road 5 is fed, and be ensure that the feed pressure in each pipeline, is collected band again together after material foaming, is using small-power Extruder realizes the feed demand of slab, reduces production cost, material is by two inside lower flow channel 5 and upper runner 4 The process of secondary foaming and extruding, ensure that finished product bubble even compact, improves product quality.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (4)

1. Runner plastic extrusion die, including die main body (1), feed inlet (2), torpedo body 1. a kind of double-deck feed three-level foams (3), upper runner (4), lower flow channel (5), discharge port (6) and product (7), it is characterised in that: the outer wall of the die main body (1) is opened Equipped with feed inlet (2) and discharge port (6), the system that screw is fixedly connected with die main body (1) is provided on the discharge port (6) Product (7), are connected with upper runner (4) and lower flow channel (5) between the feed inlet (2) and discharge port (6), the upper runner (4) and It is provided between lower flow channel (5) torpedo body (3), the upper runner (4) is internally provided with the first area Tun Liao (41), the first level-one Foaming zone (42) and the first second level foaming zone (43), penetrate through between the area first Tun Liao (41) and the first level-one foaming zone (42) It is provided with the first level-one foaming zone entrance (44), is passed through between first level-one foaming zone (42) and the first second level foaming zone (43) Logical to be provided with the first second level foaming zone entrance (45), the lower flow channel (5) is internally provided with the second area Tun Liao (51), the 2nd 1 Grade foaming zone (52) and the second second level foaming zone (53), are passed through between the area second Tun Liao (51) and the second level-one foaming zone (52) It is logical to be provided with the second level-one foaming zone entrance (54), between second level-one foaming zone (52) and the second second level foaming zone (53) Perforation is provided with the second second level foaming zone entrance (55).
2. The runner plastic extrusion die 2. a kind of double-deck feed three-level according to claim 1 foams, it is characterised in that: described The inner space of first level-one foaming zone (42) is greater than the inner space in the first area Tun Liao (41), the first second level foaming zone (43) Inner space is greater than the inner space of the first level-one foaming zone (42), and the inner space of the second level-one foaming zone (52) is greater than second The inner space in the area Tun Liao (51), the inner space of the second second level foaming zone (53) are greater than the inside of the second level-one foaming zone (52) Space.
3. The runner plastic extrusion die 3. a kind of double-deck feed three-level according to claim 1 foams, it is characterised in that: described The width of first level-one foaming zone entrance (44) less than the first area Tun Liao (41) width, the first second level foaming zone entrance (45) Width is less than the width of the first level-one foaming zone (42), and the width of the second level-one foaming zone entrance (54) is less than the second area Tun Liao (51) width, the width of the width of the second second level foaming zone entrance (55) less than the second level-one foaming zone (52).
4. The runner plastic extrusion die 4. a kind of double-deck feed three-level according to claim 1 foams, it is characterised in that: described Upper runner (4) and lower flow channel (5) penetrate through connection at feed inlet (2), and upper runner (4) and lower flow channel (5) are passed through at discharge port (6) Lead to and connects.