CN217752646U - Plastic formwork co-extrusion die - Google Patents

Abstract

The utility model discloses a plastic template co-extrusion die, relating to the technical field of film extrusion; the co-extrusion die comprises a die frame, an extrusion die body, a heating element and a die lip; a glue inlet flow passage is arranged in the mould frame and used for inputting glue; a mixed runner communicated with the glue inlet runner is formed between the extrusion die body and the die carrier together, the mixed runner is used for receiving glue materials input from the glue inlet runner, a coiled material runner communicated with the mixed runner is also arranged in the extrusion die body, and the coiled material runner is used for inputting glass fiber coiled materials into the mixed runner; the heating element is arranged on the die carrier or the extrusion die body and is used for heating the substance in the mixed flow channel; the die lip is arranged at the end part of the extrusion die body, is communicated with the mixing flow channel and is used for extruding and molding substances in the mixing flow channel under the pressure and heating state to obtain the plastic template. The plastic template co-extrusion die can combine extrusion molding and hot-pressing composite processes, simplify the composite process and reduce the composite cost.

Description

Plastic formwork co-extrusion die

Technical Field

The utility model relates to a membrane material extrusion technical field particularly, relates to a plastic formwork is crowded mould altogether.

Background

The building templates manufactured by the existing building template production line equipment have poor strength and need to be subjected to composite molding with glass fiber sheets through a hot pressing process after extrusion molding. However, the composite molding process is complex, has many processes, needs more production tools such as fields, equipment (hot press), personnel and the like, and has high power consumption and high energy consumption, so that the composite molding cost is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can combine extrusion moulding and hot pressing combined technology, and can simplify combined technology, reduce composite cost's co-extrusion die of plastic formwork.

The embodiment of the utility model is realized like this:

in a first aspect, the utility model provides a plastic formwork is mould altogether, include:

the mould frame is internally provided with a glue inlet flow passage, and the glue inlet flow passage is used for inputting glue;

the extrusion die body and the die frame jointly form a mixed flow channel communicated with the glue inlet flow channel, the mixed flow channel is used for receiving glue materials input from the glue inlet flow channel, a coiled material flow channel communicated with the mixed flow channel is further arranged in the extrusion die body, and the coiled material flow channel is used for inputting glass fiber coiled materials into the mixed flow channel;

the heating element is arranged on the die frame or the extrusion die body and is used for heating the substance in the mixed flow channel;

and the die lip is arranged at the end part of the extrusion die body, is communicated with the mixing flow channel and is used for extruding and molding substances in the mixing flow channel under the pressure and heating state to obtain the plastic template.

In an optional embodiment, the glue inlet flow channel comprises a first glue inlet flow channel and a second glue inlet flow channel which are positioned at two sides of the die lip, the first glue inlet flow channel and the second glue inlet flow channel are both communicated with the mixing flow channel, and the first glue inlet flow channel and the second glue inlet flow channel are both used for inputting glue stock;

the coiled material runner comprises a first coiled material runner and a second coiled material runner which are positioned at two sides of the die lip, and the first coiled material runner and the second coiled material runner are both used for inputting flaky glass fiber coiled materials; the first coiled material runner and the second coiled material runner are both communicated with the mixed runner, the first coiled material runner and the first glue inlet runner are positioned on the same side of the die lip, and the second coiled material runner and the second glue inlet runner are positioned on the same side of the die lip;

the die lip is used for extruding and molding substances in the mixed flow channel to obtain the plastic template, so that the plastic template comprises three adhesive layers and two glass fiber coil layers, the three adhesive layers are arranged at intervals to form two gaps, and the two glass fiber coil layers are respectively arranged in the two gaps.

In an optional embodiment, the extrusion die body comprises an upper die body and a lower die body, the upper die body and the upper end of the die carrier are arranged at intervals, the lower die body and the lower end of the die carrier are arranged at intervals, and the upper die body, the lower die body and the die carrier form a mixed flow channel together;

and the first coiled material runner is arranged on the upper die body, and the second coiled material runner is arranged on the lower die body.

In an alternative embodiment, the extending direction of the first winding material flow channel and the extending direction of the mixing flow channel are arranged at an included angle; and/or the extending direction of the second coiled material runner and the extending direction of the mixing runner form an included angle.

In an optional embodiment, the die lip includes an upper die lip and a lower die lip, the upper die lip is connected with the upper die body, the lower die lip is connected with the lower die body and arranged at an interval with the upper die lip to jointly form an extrusion lip mouth communicated with the mixed flow channel, and the extrusion lip mouth is used for extruding and molding substances in the mixed flow channel under pressure and heating states to obtain the plastic template.

In an alternative embodiment, the die carrier has a die core rod located between the upper die lip and the lower die lip, the upper surface of the die core rod is spaced from the upper die lip, the lower surface of the die core rod is spaced from the lower die lip, and the die core rod includes a plurality of extrusion blocks, and the plurality of extrusion blocks are arranged in a rectangular array.

In an alternative embodiment, a first protrusion is disposed on a surface of the die core rod facing the upper die lip, a second protrusion is disposed on a surface of the upper die lip facing the die core rod, the first protrusion and the second protrusion are arranged in a staggered manner in the vertical direction, and a first limit groove for accommodating the extrusion material is formed between the first protrusion and the second protrusion.

In an alternative embodiment, a third protrusion is disposed on a surface of the die core rod facing the lower die lip, a fourth protrusion is disposed on a surface of the upper die lip facing the die core rod, the third protrusion and the fourth protrusion are arranged in a staggered manner in the vertical direction, and a second limiting groove for accommodating the extrusion material is formed between the third protrusion and the fourth protrusion.

In an alternative embodiment, the first protrusion and the third protrusion are spaced apart in the vertical direction, and the second protrusion and the fourth protrusion are spaced apart in the vertical direction.

In alternative embodiments, the heating member is a heating sheet, a heating wire, or a heating rod.

The embodiment of the utility model provides an at least possess following advantage or beneficial effect:

the embodiment of the utility model provides a plastic template co-extrusion die, which comprises a die frame, an extrusion die body, a heating element and a die lip; a glue inlet flow passage is arranged in the mould frame and used for inputting glue materials; a mixed runner communicated with the glue inlet runner is formed between the extrusion die body and the die carrier together, the mixed runner is used for receiving glue materials input from the glue inlet runner, a coiled material runner communicated with the mixed runner is also arranged in the extrusion die body, and the coiled material runner is used for inputting glass fiber coiled materials into the mixed runner; the heating element is arranged on the die carrier or the extrusion die body and is used for heating the substance in the mixed flow channel; the die lip is arranged at the end part of the extrusion die body, is communicated with the mixing flow channel and is used for extruding and molding substances in the mixing flow channel under the pressure and heating state to obtain the plastic template.

The plastic template co-extrusion die can improve two processes of extrusion molding and hot-pressing compounding in the template molding process into one-step heating and extrusion molding by compounding the heating element in the die frame or the extrusion die body, thereby simplifying the compounding process and reducing the compounding cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a plastic formwork co-extrusion mold according to an embodiment of the present invention during plastic formwork extrusion molding operation;

fig. 2 is a schematic structural diagram of a plastic template obtained by extrusion molding of a plastic template co-extrusion mold according to an embodiment of the present invention;

fig. 3 is a partial enlarged view at I of fig. 1.

The icon is 100-plastic template co-extrusion mould; 101-a mould frame; 103-a first glue inlet flow channel; 105-a second glue inlet runner; 107-extrusion of the mould body; 109-upper die body; 111-a lower die body; 113-a mixing channel; 115-a first web runner; 117-second web runner; 119-upper die lip; 121-lower die lip; 123-surface glue layer; 125-glass fiber web layer; 127-middle glue layer; 129-primer layer; 131-glass fiber coil stock; 133-extruding the lip; 135-die core rod; 137-extruding block; 139-a first projection; 141-a second projection; 143-third projections; 145-fourth bump; 147-wrap roller.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the related technology, the building templates produced by the building template production line equipment have poor strength and need to be subjected to composite forming with glass fiber sheets through a hot pressing process after extrusion forming. However, the composite molding process is complex, has many processes, needs more production tools such as fields, equipment (hot press), personnel and the like, and has high power consumption and high energy consumption, so that the composite molding cost is high.

In view of this, the embodiment provides a plastic template co-extrusion mold which can combine the extrusion molding and the hot-pressing composite process, simplify the composite process, and reduce the composite cost. The structure of the plastic template co-extrusion die 100 will be described in detail below.

Fig. 1 is a schematic structural diagram of a plastic template co-extrusion mold 100 provided in this embodiment during plastic template extrusion molding operation; fig. 2 is a schematic structural diagram of the plastic template obtained by extrusion molding of the plastic template co-extrusion mold 100 provided in this embodiment. Referring to fig. 1 and fig. 2, the present embodiment provides a co-extrusion mold 100 for a plastic template, which includes a mold frame 101, an extrusion mold body 107, a heating element and a mold lip.

The die carrier 101 is the main structure of the whole plastic die co-extrusion die. The mold frame 101 is internally provided with a glue inlet flow channel, the glue inlet flow channel is used for inputting glue, and the glue is made of PP (polypropylene) and used for ensuring the strength of the extruded plastic mold.

A mixing flow channel 113 communicated with the glue inlet flow channel is formed between the extrusion die body 107 and the die carrier 101, and the mixing flow channel 113 is used for receiving glue stock input from the glue inlet flow channel. That is, the gum material entering from the gum inlet channel can be transported downstream through the mixing channel 113. Meanwhile, the extrusion die body 107 further has a web flow path communicating with the mixing flow path 113, the web flow path being used to input the glass fiber web 131 into the mixing flow path 113, and the glass fiber web 131 having a sheet-like structure being wound around the winding roll 147 before being input into the web flow path. When the sizing material entering the sizing material inlet channel can be conveyed downstream to the glass fiber roll material 131 through the mixing channel 113, the sizing material can be coated on the upper and lower surface layers of the glass fiber roll material 131, so that the subsequent forming operation can be conveniently carried out.

The heating member is disposed on the mold frame 101 or the extrusion mold 107, and heats the substance in the mixing flow path 113. The heating element can be selected as a heating rod, and can also be selected as a heating wire or a heating sheet and other structures. The heating element is arranged to heat the glass fiber coiled material and the sizing material in the mixing flow channel 113 at the same time, so that the PP layer on the surface of the glass fiber coiled material can be softened, and the sizing material can be stably attached to the surface of the glass fiber coiled material to facilitate the extrusion operation.

The die lip is disposed at an end of the extrusion die body 107, is communicated with the mixing flow channel 113, and is located at a downstream of the extrusion die body 107 along a moving direction of the substance in the mixing flow channel 113, so that the die lip can be used for extruding and molding the substance in the mixing flow channel 113 under pressure and heating to obtain the plastic template. The plastic template co-extrusion die 100 can improve two processes of extrusion molding and hot-press compounding in the template molding process into one-step heating and extrusion molding by compounding the heating element in the die frame 101 or the extrusion die body 107, thereby simplifying the compounding process and reducing the compounding cost.

Referring to fig. 1 and fig. 2 again, in the present embodiment, the glue inlet channel includes a first glue inlet channel 103 and a second glue inlet channel 105 located at two sides of the die lip. The first glue inlet runner 103 and the second glue inlet runner 105 have the same structure and are arranged in parallel. The first feeding runner and the second feeding runner are both communicated with the mixing runner 113, and the first glue inlet runner 103 and the second glue inlet runner 105 are both used for inputting glue. By providing the first feed channel and the second feed channel in two, it is possible to feed rubber compound from different positions, respectively.

Correspondingly, in this embodiment, the web runners include a first web runner 115 and a second web runner 117 on opposite sides of the die lip. Wherein the first web runner 115 and the second web runner 117 are used to input a sheet-like web 131 of glass fibers. First web runner 115 and second web runner 117 are both in communication with mixing runner 113, and first web runner 115 and first glue inlet runner 103 are on the same side of the die lip, and second web runner 117 and second glue inlet runner 105 are on the same side of the die lip. For example, as shown in fig. 1, the first web runner 115 and the first glue inlet runner 103 are located above the die lip, and the second web runner 117 and the second glue inlet runner 105 are located below the die lip. The die lip is used for extruding and molding the substance in the mixing flow channel 113 to obtain the plastic template.

Through the arrangement, the upper surface and the lower surface of the glass fiber roll 131 input from the first roll flow channel 115 can be coated with the sizing material input from the first glue feeding flow channel 103 at the same time, the upper surface and the lower surface of the glass fiber roll 131 input from the second roll flow channel 105 can be coated with the sizing material input from the second glue feeding flow channel 105 at the same time, the sizing material on the upper surface of the glass fiber roll 131 input from the first roll flow channel 115 forms a surface sizing layer 123 after being extruded, the glass fiber roll 131 input from the first roll flow channel 115 forms a glass fiber roll layer 125, the sizing material on the lower surface of the glass fiber roll 131 input from the first roll flow channel 115 and the sizing material on the upper surface of the glass fiber roll 131 input from the second roll flow channel 117 form an intermediate sizing layer 127 together, the glass fiber roll 131 input from the second roll flow channel 117 forms a glass fiber roll layer 125, the sizing material on the lower surface of the glass fiber roll 131 input from the second roll flow channel 117 forms a bottom sizing layer 129, so that the whole plastic formwork comprises three glass fiber layers and two glass fiber roll layers 125, and the two glass fiber layers are arranged at intervals, and two gaps are respectively arranged in the two glass fiber layers 125. That is, through setting up like this, can compound the plastic formwork who obtains multilayer structure fast, can improve compound efficiency and quality, practice thrift compound cost.

In detail, referring to fig. 1 and fig. 2 again, in the present embodiment, the extrusion die 107 includes an upper die 109 and a lower die 111. The upper mold 109 and the upper end of the mold frame 101 are arranged at intervals, the lower mold 111 and the lower end of the mold frame 101 are arranged at intervals, and the upper mold 109, the lower mold 111 and the mold frame 101 together form a mixing flow channel 113. The first web runner 115 is opened in the upper mold 109, and the second web runner 117 is opened in the lower mold 111. By this arrangement, after the sheet-shaped glass fiber webs 131 are fed from the first web runner 115 and the second web runner 117, the sizing material fed from the first glue feeding runner 103 and the second glue feeding runner 105 can be applied to the upper and lower surfaces of each glass fiber web 131, and can be sufficiently combined under the heating action of the heating members, so as to be extruded and molded from the die lips to obtain a product.

In this embodiment, the extending direction of the first web runner 115 and the extending direction of the mixing runner 113 are arranged at an angle. The extending direction of the second web runner 117 is arranged at an angle to the extending direction of the mixing runner 113. By providing both the first web runner 115 and the second web runner 117 at an incline, the input of the glass fiber web 131 can be facilitated to facilitate mixing with the size. Of course, in other embodiments, both the first web runner 115 and the second web runner 117 may be arranged to extend in the vertical direction or in other directions, so as to ensure the stability and reliability of the input of the glass fiber web, which is not limited in this embodiment.

Referring to fig. 1 and fig. 2 again, in the present embodiment, the die lip includes an upper die lip 119 and a lower die lip 121. The upper die lip 119 is connected with the upper die body 109, the lower die lip 121 is connected with the lower die body 111 and arranged at an interval with the upper die lip 119 to form an extrusion lip 133 communicated with the mixed flow channel 113 together, and the extrusion lip 133 is used for extruding and molding substances in the mixed flow channel 113 under pressure and heating states to obtain the plastic template. Through the setting of last die lip 119 and lower die lip 121, the whole plastic formwork crowded mould 100 altogether of being convenient for dismantlement, installation and cleaning operations go on, and be convenient for extrude lip 133 and can extrude the plastic formwork who obtains not unidimensional.

In detail, in the present embodiment, the die holder 101 has a die core rod 135 located between an upper die lip 119 and a lower die lip 121, an upper surface of the die core rod 135 is spaced apart from the upper die lip 119, a lower surface of the die core rod 135 is spaced apart from the lower die lip 121, and the die core rod 135 includes a plurality of extrusion blocks 137, each extrusion block 137 has a rectangular parallelepiped structure, and the plurality of extrusion blocks 137 are arranged in a rectangular array. Through the arrangement of the plurality of extrusion blocks 137, the glue material on the lower surface of the glass fiber roll material 131 input from the first roll material runner 115 and the glue material on the upper surface of the glass fiber roll material 131 input from the second roll material runner 117 form the intermediate glue layer 127 together, so that the intermediate glue layer 127 can be in a square grid structure as shown in fig. 2, the strength of the intermediate glue layer 127 can be ensured, and the strength of the whole plastic template can be ensured, so that the product quality can be ensured.

Alternatively, fig. 3 is a partial enlarged view at I of fig. 1. Referring to fig. 1 and fig. 3, in the present embodiment, a first protrusion 139 is disposed on a surface of the mandrel 135 facing the upper lip 119, a second protrusion 141 is disposed on a surface of the mandrel 119 facing the mandrel 135, the first protrusion 139 and the second protrusion 141 are both in an arc structure such as a spherical shape or a hemispherical shape, and the first protrusion 139 and the second protrusion 141 are disposed in a staggered manner in an up-down direction, and a first limit groove for accommodating an extrusion material is formed therebetween. Through the setting of first spacing groove, can restrict the coiled material, prevent the coiled material off tracking to can guarantee the reliability and the stability of whole extrusion operation, guarantee product quality.

Meanwhile, a third protrusion 143 is arranged on the surface of the die core rod 135 facing the lower die lip 121, a fourth protrusion 145 is arranged on the surface of the upper die lip 119 facing the die core rod 135, the third protrusion 143 and the fourth protrusion 145 are both in spherical or hemispherical arc structures, the third protrusion 143 and the fourth protrusion 145 are arranged in a staggered manner in the up-down direction, and a second limit groove for containing extrusion materials is formed between the third protrusion 143 and the fourth protrusion 145. Through the setting of second spacing groove, also can correspond the restriction coiled material, prevent the coiled material off tracking to can guarantee the reliability and the stability of whole extrusion operation, guarantee product quality.

Note that, in the present embodiment, the first protrusion 139 and the third protrusion 143 are provided at intervals in the vertical direction, and the second protrusion 141 and the fourth protrusion 145 are provided at intervals in the vertical direction. Through setting up like this for first spacing groove and second spacing groove also interval set up in vertical direction, thereby make the upper and lower two parts homoenergetic of membrane material obtain spacing effectively, and then can guarantee the regularity behind the extrusion of whole plastic formwork, guarantee product quality.

The embodiment of the present invention provides a plastic template co-extrusion mold, the working principle and the beneficial effects of which are described in detail below:

when the plastic template worker extrusion die is used for carrying out extrusion molding operation on a plastic template, a glass fiber coiled material can firstly extend into the mixing flow channel 113 through the first coiled material flow channel 115 and the second coiled material flow channel 117, then a sizing material is input through the first sizing material flow channel and the second sizing material flow channel, so that the sizing material is in contact with the glass fiber coiled material, and heating is carried out under the action of a heating rod; then, the extrusion molding operation is performed under the pressure of the extruder, and the plastic template is discharged from the lip. In the plastic template, the sizing material on the upper surface of the glass fiber roll 131 input from the first roll flow channel 115 forms the surface sizing layer 123 after being extruded, the glass fiber roll 131 input from the first roll flow channel 115 forms a glass fiber roll layer 125, the sizing material on the lower surface of the glass fiber roll 131 input from the first roll flow channel 115 and the sizing material on the upper surface of the glass fiber roll 131 input from the second roll flow channel 117 form the intermediate sizing layer 127 together, the glass fiber roll 131 input from the second roll flow channel 117 forms a glass fiber roll layer 125, and the sizing material on the lower surface of the glass fiber roll 131 input from the second roll flow channel 117 forms the base sizing layer 129.

In the above process, the plastic template co-extrusion mold 100 can improve the two processes of extrusion molding and hot-press compounding in the template molding process into one-step heating and extrusion molding by compounding the heating element in the mold base 101 or the extrusion mold body 107, thereby simplifying the compounding process and reducing the compounding cost.

To sum up, the embodiment of the utility model provides a can combine extrusion moulding and hot pressing composite technology, and can simplify composite technology, reduce composite cost's plastic formwork co-extrusion mould 100.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A plastic template co-extrusion die is characterized by comprising:

the mould frame is internally provided with a glue inlet flow channel, and the glue inlet flow channel is used for inputting glue;

the extrusion die body and the die frame jointly form a mixed runner communicated with the glue inlet runner, the mixed runner is used for receiving glue materials input from the glue inlet runner, a coiled material runner communicated with the mixed runner is further arranged in the extrusion die body, and the coiled material runner is used for inputting glass fiber coiled materials to the mixed runner;

the heating element is arranged on the die frame or the extrusion die body and is used for heating the substance in the mixed flow channel;

and the die lip is arranged at the end part of the extrusion die body, is communicated with the mixing flow channel and is used for extruding and molding substances in the mixing flow channel under the pressure and heating state to obtain the plastic template.

2. The plastic template co-extrusion die of claim 1, wherein:

the glue inlet flow channel comprises a first glue inlet flow channel and a second glue inlet flow channel which are positioned on two sides of the die lip, the first glue inlet flow channel and the second glue inlet flow channel are both communicated with the mixing flow channel, and the first glue inlet flow channel and the second glue inlet flow channel are both used for inputting the glue material;

the coiled material runner comprises a first coiled material runner and a second coiled material runner which are positioned on two sides of the die lip, and the first coiled material runner and the second coiled material runner are both used for inputting sheet-shaped glass fiber coiled materials; the first coiled material runner and the second coiled material runner are communicated with the mixing runner, the first coiled material runner and the first glue inlet runner are positioned on the same side of the die lip, and the second coiled material runner and the second glue inlet runner are positioned on the same side of the die lip;

the die lip is used for obtaining the material extrusion moulding in the mixed flow channel the plastic template, so that the plastic template comprises a three-layer adhesive layer and two glass fiber coil material layers, wherein the two gaps are formed at intervals of the adhesive layer, and the two glass fiber coil material layers are respectively arranged in the two gaps.

3. The plastic template co-extrusion die as claimed in claim 2, wherein:

the extrusion die body comprises an upper die body and a lower die body, the upper die body and the upper end of the die carrier are arranged at intervals, the lower die body and the lower end of the die carrier are arranged at intervals, and the upper die body, the lower die body and the die carrier form the mixing flow channel together;

and the first coiled material runner is arranged on the upper die body, and the second coiled material runner is arranged on the lower die body.

4. The plastic template co-extrusion die of claim 3, wherein:

the extending direction of the first coiled material runner and the extending direction of the mixing runner form an included angle; and/or the extending direction of the second coiled material runner and the extending direction of the mixed runner form an included angle.

5. The plastic template co-extrusion die of claim 3, wherein:

the die lip includes die lip and lower die lip, go up the die lip with go up the die body coupling setting, the die lip down with the die body coupling setting down, and with go up the die lip interval setting, form jointly with the extrusion lip mouth of mixed runner intercommunication, the extrusion lip mouth be used for under pressure and heating state will material extrusion moulding in the mixed runner obtains the plastic formwork.

6. The plastic template co-extrusion die of claim 5, wherein:

the die carrier has and is located go up the die lip with the mould plug between the lower die lip, the upper surface of mould plug with go up the die lip interval and set up, the lower surface of mould plug with the lower die lip interval sets up, just the mould plug includes a plurality of extrusion pieces, and is a plurality of the extrusion piece is the rectangle array setting.

7. The plastic template co-extrusion die of claim 6, wherein:

the surface of the die core rod facing the upper die lip is provided with a first bulge, the surface of the upper die lip facing the die core rod is provided with a second bulge, the first bulge and the second bulge are arranged in a staggered mode in the up-down direction, and a first limiting groove used for containing extrusion materials is formed between the first bulge and the second bulge.

8. The plastic template co-extrusion die of claim 7, wherein:

the surface of the die core rod facing the lower die lip is provided with a third bulge, the surface of the upper die lip facing the die core rod is provided with a fourth bulge, the third bulge and the fourth bulge are arranged in a staggered mode in the up-down direction, and a second limiting groove used for containing extrusion materials is formed between the third bulge and the fourth bulge.

9. The plastic template co-extrusion die of claim 8, wherein:

the first bulges and the third bulges are arranged at intervals in the vertical direction, and the second bulges and the fourth bulges are arranged at intervals in the vertical direction.

10. A plastic template co-extrusion die according to any one of claims 1 to 9, wherein:

the heating member is a heating sheet, a heating wire or a heating rod.

Images