A kt board core horizontal extrusion die

Abstract

The utility model discloses a kind of KT board core horizontal extrusion mould, it is related to KT board production mould technical field. Including upper die, lower die, first teflon plate, second teflon plate, upper die and lower die are the flat plate of horizontal placement, first extrusion cavity is formed between the two, first extrusion cavity is equipped with first extrusion outlet, first teflon plate is installed in upper die, second teflon plate is installed in lower die, first teflon plate and second teflon plate are symmetrically arranged, second extrusion cavity is formed between first teflon plate and second teflon plate, second extrusion cavity is equipped with second extrusion outlet, first extrusion outlet and second extrusion cavity are communicated. The utility model can make KT board on-line composite aluminum foil paper realize continuous production, and the KT board surface produced is smooth without extrusion mark.

Description

Technical Field

[0001] This utility model relates to the field of KT board production mold technology, specifically to a horizontal extrusion mold for KT board core. Background Technology

[0002] KT board is a new type of material made from polystyrene (PS) granules through foaming to form a core, followed by surface lamination and pressing. It boasts advantages such as stiffness, lightness, resistance to deterioration, and ease of processing. It can be directly screen-printed, painted, laminated with adhesive-backed graphics, and inkjet-printed, making it widely used in advertising displays and promotions, model airplanes, architectural decoration, cultural arts, and packaging. In advertising, it is used as a mounting board for product promotion information exhibitions, displays, and announcements. It is also widely used for one-time screen printing, making it particularly suitable for large-scale unified promotional activities. Sizes range from 0.9m to 1.2m in width, with a typical length of 2.4m. The core of the KT board is extruded during production using a die. Currently, most production uses a cylindrical die. The extruder extrudes the KT board raw material from the die to form a cylindrical structure. After being shaped in a setting barrel, the cylindrical KT board is cut into flat KT boards, which are then rolled into KT board rolls. After KT board is rolled, it undergoes unwinding, curing, and rewinding before it can be laminated with aluminum foil. The process uses circular molds, which prevents continuous production, results in long production cycles, and leads to large inventory levels. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a horizontal extrusion die for KT board core, which enables continuous production of KT board with aluminum foil online, and the produced KT board has a smooth surface without extrusion marks.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a horizontal extrusion die for KT board core, including an upper die, a lower die, a first PTFE plate, and a second PTFE plate. The upper die and the lower die are both horizontally placed flat plates, forming a first extrusion cavity between them. The first extrusion cavity is provided with a first extrusion port. The first PTFE plate is installed in the upper die, and the second PTFE plate is installed in the lower die. The first PTFE plate and the second PTFE plate are symmetrically arranged, forming a second extrusion cavity between the first PTFE plate and the second PTFE plate. The second extrusion cavity is provided with a second extrusion port, and the first extrusion port is connected to the second extrusion cavity.

[0005] Preferably, both the first PTFE plate and the second PTFE plate are L-shaped structures, which consist of a vertical part and a horizontal part. The vertical part of the first PTFE plate is in close contact with the outer side of the upper mold, and the vertical part of the second PTFE plate is in close contact with the outer side of the lower mold. A second extrusion cavity is formed between the horizontal parts of the two PTFE plates.

[0006] Preferably, the distance between the horizontal portion of the first PTFE plate and the horizontal portion of the second PTFE plate gradually decreases from the first extrusion port to the second extrusion port.

[0007] Preferably, the first PTFE plate is pressed tightly against the side of the upper mold by the first pressure plate, and the second PTFE plate is pressed tightly against the side of the lower mold by the second pressure plate.

[0008] The beneficial effects of adopting the above technical solution are as follows: 1. This extrusion die consists of two horizontally placed flat plates. The injected KT board raw material is extruded horizontally from the extrusion port and directly enters the subsequent production equipment, where it is laminated with aluminum foil online. Compared with existing round dies, it eliminates the intermediate winding and curing process, reduces storage and inventory during the production process, and avoids the fire hazards of large-scale warehousing.

[0009] 2. The extrusion die in this application adds two PTFE plates to the original flat die. Compared with the original flat die, it eliminates the extrusion marks on the core surface and makes the KT board core surface smoother and flatter. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the cross-sectional structure of the extrusion die; Figure 2 yes Figure 1 Enlarged view of Part A; In the figure: 1. Upper mold, 101. Upper mold lip, 2. Lower mold, 201. Lower mold lip, 3. First PTFE plate, 4. First pressure plate, 5. First extrusion cavity, 6. First extrusion port, 7. Second extrusion cavity, 701. Second extrusion port, 8. Second PTFE plate, 9. Second pressure plate. Detailed Implementation

[0011] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0012] like Figure 1 As shown, the KT board extrusion die includes an upper die 1, a lower die 2, a first PTFE plate 3, a second PTFE plate 8, a first pressure plate 4, and a second pressure plate 9. The upper die 1 and lower die 2 are flat plates, each with grooves, which together form the first extrusion cavity 5. The KT board raw material first enters the first extrusion cavity 5 through the extrusion die injection port. The first extrusion cavity 5 has a first extrusion port 6. The first extrusion port 6 is formed by an upper die lip 101 and a lower die lip 201. Figure 2As shown, when the end thickness of the die lip is t=1mm and the included angle α between the upper and lower surfaces of the die lip is 2°, a core plate with a thickness of ≥3mm can be produced.

[0013] like Figure 1 As shown, both the first PTFE plate 3 and the second PTFE plate 8 have an L-shaped structure. The L-shaped structure consists of a vertical part and a horizontal part. The vertical part of the first PTFE plate 3 is in close contact with the outer side of the upper mold 1, and the vertical part of the second PTFE plate 8 is in close contact with the outer side of the lower mold 2. A second extrusion cavity 7 is formed between the horizontal parts of the two PTFE plates. The distance between the horizontal parts of the first PTFE plate 3 and the second PTFE plate 8 gradually decreases from the first extrusion port 6 to the second extrusion port 701. The second extrusion cavity 7 is provided with a second extrusion port 701. The first extrusion port 6 and the second extrusion cavity 7 are connected. KT sheet raw material is injected into the first extrusion cavity 5 through the main inlet of the mold, then enters the second extrusion cavity 7 through the first extrusion port 6, and is then extruded and formed through the second extrusion port 701.

[0014] To facilitate positioning, positioning grooves are provided on the extrusion sides of both the upper die 1 and the lower die 2. The first PTFE plate 3 and the second PTFE plate 8 are placed in the positioning grooves. The first pressure plate 4 presses on the first PTFE plate 3, and bolts pass through the first pressure plate 4 and the first PTFE plate 3 before being screwed onto the upper die 1. The first pressure plate 4 tightly presses the first PTFE plate 3 against the extrusion side of the upper die 1. The second pressure plate 9 presses on the second PTFE plate 8, and bolts pass through the second pressure plate 9 and the second PTFE plate 8 before being screwed onto the lower die 2. The second pressure plate 9 tightly presses the second PTFE plate 8 against the extrusion side of the lower die 2. Actual production verification shows that adding PTFE plates eliminates extrusion marks on the surface of the produced KT board, resulting in a smoother and flatter surface.

[0015] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A horizontal extrusion die for KT board core, characterized in that, The device includes an upper mold (1), a lower mold (2), a first PTFE plate (3), and a second PTFE plate (8). The upper mold (1) and the lower mold (2) are both horizontally placed flat plates, forming a first extrusion cavity (5) between them. The first extrusion cavity (5) is provided with a first extrusion port (6). The first PTFE plate (3) is installed on the upper mold (1), and the second PTFE plate (8) is installed on the lower mold (2). The first PTFE plate (3) and the second PTFE plate (8) are symmetrically arranged. A second extrusion cavity (7) is formed between the first PTFE plate (3) and the second PTFE plate (8). The second extrusion cavity (7) is provided with a second extrusion port (701), and the first extrusion port (6) is connected to the second extrusion cavity (7).

2. The horizontal extrusion die for KT board core according to claim 1, characterized in that, Both the first PTFE plate (3) and the second PTFE plate (8) are L-shaped structures. The L-shaped structure consists of a vertical part and a horizontal part. The vertical part of the first PTFE plate (3) is attached to the outer side of the upper mold (1), and the vertical part of the second PTFE plate (8) is attached to the outer side of the lower mold (2). A second extrusion cavity (7) is formed between the horizontal parts of the two PTFE plates.

3. The horizontal extrusion die for KT board core according to claim 2, characterized in that, The distance between the horizontal portion of the first PTFE plate (3) and the horizontal portion of the second PTFE plate (8) gradually decreases from the first extrusion port (6) to the second extrusion port (701).

4. The horizontal extrusion die for KT board core according to claim 1, characterized in that, The first PTFE plate (3) is pressed tightly against the side of the upper mold (1) by the first pressure plate (4), and the second PTFE plate (8) is pressed tightly against the side of the lower mold (2) by the second pressure plate (9).

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