阅读说明：本技术 一种复合塑料型材挤出成型模具及方法 (Composite plastic profile extrusion molding die and method ) 是由 张进 于 2021-10-25 设计创作，主要内容包括：本发明公开了一种复合塑料型材挤出成型模具及方法,所述模具包括依次设置的主进料段、副进料段、混料段、辅助成型段和定型段,其中主进料段、副进料段、混料段和辅助成型段依次连接,所述主进料段侧面延伸有主进料区,所述主进料段、副进料段、混料段和辅助成型段内部设置有连续的物料挤出通道,所述定型段内设置有物料定型通道,所述物料定型通道与物料挤出通道配套,所述主进料区内设置有主进料口,所述主进料口与物料挤出通道的端部连通,所述辅助成型段内设置有风冷通道和水冷通道,所述风冷通道连通物料挤出通道和外界,所述水冷通道位于风冷通道以外。(The invention discloses a composite plastic profile extrusion molding die and a method, wherein the die comprises a main feeding section, an auxiliary feeding section, a mixing section, an auxiliary molding section and a shaping section which are arranged in sequence, wherein the main feeding section, the auxiliary feeding section, the mixing section and the auxiliary forming section are connected in sequence, a main feeding area extends from the side surface of the main feeding section, the main feeding section, the auxiliary feeding section, the mixing section and the auxiliary forming section are internally provided with continuous material extrusion channels, a material shaping channel is arranged in the shaping section, the material shaping channel is matched with the material extrusion channel, a main feed inlet is arranged in the main feed area and is communicated with the end part of the material extrusion channel, be provided with air-cooled passageway and water-cooling passageway in the supplementary shaping section, air-cooled passageway intercommunication material is extruded passageway and external, the water-cooling passageway is located outside the air-cooled passageway.)

1. The utility model provides a compound plastic material extrusion moulding mould which characterized in that: including main feeding section, vice feeding section, mixing section, supplementary shaping section and the design section that sets gradually, wherein main feeding section, vice feeding section, mixing section and supplementary shaping section connect gradually, main feeding section side extension has main feeding district, main feeding section, vice feeding section, mixing section and the inside continuous material that is provided with of supplementary shaping section extrude the passageway, be provided with material design passageway in the design section, material design passageway is extruded the passageway with the material and is supporting, be provided with main feed inlet in the main feeding district, the main feed inlet extrudes the tip intercommunication of passageway with the material, be provided with wind cold channel and water-cooling passageway in the supplementary shaping section, wind cold channel intercommunication material is extruded passageway and external, water-cooling passageway is located beyond the wind cold channel.

2. The composite plastic profile extrusion molding die of claim 1, characterized in that:

the auxiliary feeding section is also provided with an auxiliary feeding hole I and an auxiliary feeding hole II, and the auxiliary feeding hole I and the auxiliary feeding hole II are respectively communicated with the interior of the material extrusion channel.

3. The composite plastic profile extrusion molding die of claim 1, characterized in that: the main feeding section, the auxiliary feeding section, the mixing section and the auxiliary forming section are of a split structure.

4. The composite plastic profile extrusion molding die of claim 1, characterized in that: the outer walls of the main feeding section, the auxiliary feeding section and the mixing section are also provided with integrated heating rings, and the heating rings are detachably connected with the outer walls of the main feeding section, the auxiliary feeding section and the mixing section.

5. The composite plastic profile extrusion molding die of claim 2, characterized in that: the whole main feeding section is of a T-shaped structure, and the main feeding hole is vertical to the first auxiliary feeding hole and the second auxiliary feeding hole.

6. A method for extrusion molding of a composite plastic profile is characterized by comprising the following steps: the method comprises the following steps:

1) the composite plastic raw material A, the composite plastic raw material B and the composite plastic raw material C are respectively added into the material extrusion channel from the main feed port, the auxiliary feed port I and the auxiliary feed port II, or are all added into the material extrusion channel from the main feed port;

2) in the feeding process, the heating ring works to heat and melt the raw materials A, B and C in the main feeding section and the auxiliary feeding section;

3) uniformly mixing the melted raw material A, the melted raw material B and the melted raw material C in a mixing section, and then guiding the mixture into an auxiliary forming section to extrude a primarily-formed composite plastic profile;

4) introducing cooling air into the air cooling channel and introducing cooling water into the water cooling channel of the auxiliary forming section to carry out primary cooling and forming on the material;

5) and (4) the preliminarily cooled and shaped composite plastic profile enters a shaping section and is shaped into a finished product of the composite plastic profile.

The technical field is as follows:

the invention relates to the technical field of composite plastic molding, in particular to a composite plastic profile extrusion molding die and a method.

Background art:

the composite plastic profile is usually processed by adopting extrusion molding equipment, wherein an extrusion molding die is an important part of the extrusion molding equipment, and the existing extrusion molding die also has the defects of low molding efficiency, poor cooling effect, inconvenience in die polishing and cleaning and the like.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

The invention content is as follows:

the invention aims to provide a composite plastic profile extrusion molding die, thereby overcoming the defects in the prior art.

In order to achieve the purpose, the invention provides a composite plastic profile extrusion molding die, which comprises a main feeding section, an auxiliary feeding section, a mixing section, an auxiliary molding section and a shaping section which are arranged in sequence, wherein the main feeding section, the auxiliary feeding section, the mixing section and the auxiliary forming section are connected in sequence, a main feeding area extends from the side surface of the main feeding section, the main feeding section, the auxiliary feeding section, the mixing section and the auxiliary forming section are internally provided with continuous material extrusion channels, a material shaping channel is arranged in the shaping section, the material shaping channel is matched with the material extrusion channel, a main feed inlet is arranged in the main feed area and is communicated with the end part of the material extrusion channel, be provided with air-cooled passageway and water-cooling passageway in the supplementary shaping section, air-cooled passageway intercommunication material is extruded passageway and external, the water-cooling passageway is located outside the air-cooled passageway.

And the auxiliary feeding section is provided with an auxiliary feeding hole I and an auxiliary feeding hole II, and the auxiliary feeding hole I and the auxiliary feeding hole II are respectively communicated with the interior of the material extrusion channel.

The main feeding section, the auxiliary feeding section, the mixing section and the auxiliary forming section are of a split structure.

The outer walls of the main feeding section, the auxiliary feeding section and the mixing section are also provided with integrated heating rings, and the heating rings are detachably connected with the outer walls of the main feeding section, the auxiliary feeding section and the mixing section.

The whole main feeding section is of a T-shaped structure, and the main feeding hole is vertical to the first auxiliary feeding hole and the second auxiliary feeding hole.

A method for extrusion molding of a composite plastic profile comprises the following steps:

1) the composite plastic raw material A, the composite plastic raw material B and the composite plastic raw material C are respectively added into the material extrusion channel from the main feed port, the auxiliary feed port I and the auxiliary feed port II, or are all added into the material extrusion channel from the main feed port;

2) in the feeding process, the heating ring works to heat and melt the raw materials A, B and C in the main feeding section and the auxiliary feeding section;

3) uniformly mixing the melted raw material A, the melted raw material B and the melted raw material C in a mixing section, and then guiding the mixture into an auxiliary forming section to extrude a primarily-formed composite plastic profile;

4) introducing cooling air into the air cooling channel and introducing cooling water into the water cooling channel of the auxiliary forming section to carry out primary cooling and forming on the material;

5) and (4) the preliminarily cooled and shaped composite plastic profile enters a shaping section and is shaped into a finished product of the composite plastic profile.

Compared with the prior art, the invention has the following beneficial effects:

(1) the auxiliary forming section of the invention adopts air cooling matched with water cooling, which can improve the efficiency of preliminary cooling and shaping, is beneficial to the composite plastic with strong fluidity entering the shaping section for shaping, and can improve the efficiency of integral processing;

(2) the invention adopts split design among multiple sections, which is more convenient for maintenance operations such as cleaning and polishing of moulds in different sections;

(3) the invention is provided with a plurality of feed inlets, so that a plurality of materials can be fed from different feed inlets respectively according to requirements, thereby avoiding cross contamination among different materials and being more convenient to control the feeding sequence of the materials according to the characteristics among different materials;

description of the drawings:

FIG. 1 is a schematic view of a composite plastic profile extrusion mold of the present invention;

the reference signs are: 1-a main feeding section, 11-a main feeding area, 12-a main feeding hole, 2-an auxiliary feeding section, 21-an auxiliary feeding hole I, 22-an auxiliary feeding hole II, 3-a mixing section, 4-an auxiliary forming section, 41-an air cooling channel, 42-a water cooling channel, 5-a material extruding channel, 6-a heating ring, 7-a forming section and 8-a material forming channel.

The specific implementation mode is as follows:

the following detailed description of specific embodiments of the invention is provided, but it should be understood that the scope of the invention is not limited to the specific embodiments.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

As shown in fig. 1, a composite plastic profile extrusion molding mold comprises a main feeding section 1, an auxiliary feeding section 2, a material mixing section 3, an auxiliary molding section 4 and a shaping section 7 which are sequentially arranged, wherein the main feeding section 1, the auxiliary feeding section 2, the material mixing section 3 and the auxiliary molding section 4 are sequentially connected, a main feeding area 11 extends from the side surface of the main feeding section 1, a continuous material extrusion channel 5 is arranged inside the main feeding section 1, the auxiliary feeding section 2, the material mixing section 3 and the auxiliary molding section 4, a material shaping channel 8 is arranged inside the shaping section 7, the material shaping channel 8 is matched with the material extrusion channel 5, a main feeding hole 12 is arranged inside the main feeding area 11, the main feeding hole 12 is communicated with the end part of the material extrusion channel 5, an air cooling channel 41 and a water cooling channel 42 are arranged inside the auxiliary molding section 4, the air cooling channel 41 is communicated with the material extrusion channel 5 and the outside, the water cooling channel 42 is located outside the air cooling channel 41.

Further, in order to facilitate the respective feeding of different materials, a first auxiliary feeding port 21 and a second auxiliary feeding port 22 are arranged on the auxiliary feeding section 2, and the first auxiliary feeding port 21 and the second auxiliary feeding port 22 are respectively communicated with the interior of the material extrusion channel 5.

Furthermore, in order to facilitate the disassembly and maintenance of different working sections, the main feeding section 1, the auxiliary feeding section 2, the mixing section 3 and the auxiliary forming section 4 are of a split structure.

Further, for the stability and the homogeneity that improve the heating, main feeding section 1, vice feeding section 2, 3 outer walls of compounding section still are provided with integral type heating collar 6, be detachable the connection between heating collar 6 and main feeding section 1, vice feeding section 2, the 3 outer walls of compounding section.

Further, in order to improve the symmetrical stability of the whole structure, the whole main feeding section 1 is of a T-shaped structure, and the main feeding hole 12, the first auxiliary feeding hole 21 and the second auxiliary feeding hole 22 are of a vertical structure.

A composite plastic profile extrusion molding method comprises the following steps:

1) the composite plastic raw material A, the composite plastic raw material B and the composite plastic raw material C are respectively added into the material extrusion channel from the main feed port 12, the auxiliary feed port I21 and the auxiliary feed port II 22, the adding sequence of the materials can be respectively controlled according to the characteristics of different materials, and the composite plastic raw material A, the composite plastic raw material B and the composite plastic raw material C can also be added into the material extrusion channel from the main feed port 12;

2) in the feeding process, the heating ring works to heat and melt the raw materials A, B and C in the main feeding section 1 and the auxiliary feeding section 2;

3) uniformly mixing the melted raw material A, the melted raw material B and the melted raw material C in the mixing section 3, and then extruding a primarily-shaped composite plastic profile from the auxiliary forming section 4;

4) cooling air is introduced into the air cooling channel 41 of the auxiliary forming section 4, cooling water is introduced into the water cooling channel 42 to cool and shape the material, and the material is primarily cooled and shaped;

5) the primarily cooled and shaped composite plastic section enters the shaping section 7 and is shaped into a finished product of the composite plastic section.

The split type design is adopted among the multiple sections, so that the maintenance operations such as cleaning, polishing and the like of the molds in different sections are more convenient; the arrangement of the plurality of feed inlets can feed various materials from different feed inlets respectively, so that cross contamination among different materials can be avoided, and the feeding sequence of the materials can be controlled more conveniently according to the characteristics among different materials; (ii) a The auxiliary forming section adopts air cooling matched with water cooling, so that the primary cooling and forming efficiency can be improved, and the subsequent processing is more convenient; the heating ring adopts detachable connection, and is more convenient to disassemble and maintain the heating ring.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.