Special screw rod for whole core adhesive tape

Abstract

The utility model relates to the field of screws, and discloses a special screw for a whole core adhesive tape, which comprises an extrusion section, the extrusion section is arranged at the leftmost end of a screw body, the screw body is provided with a pre-discharge section, an exhaust section, a plasticizing section and a pre-plasticizing section, and the pre-discharge section, the exhaust section, the plasticizing section and the pre-plasticizing section are arranged on the screw body. And a conveying section is arranged on the screw body. According to the double-screw extruder, the two screw bodies are mounted in the single extruder, and the two screw bodies are meshed with each other, mixed, plasticized, exhausted and extruded, so that the screw bodies can fully plasticize materials in the machine barrel, and compared with a single screw body, the double-screw extruder has the advantages that the materials can be fully plasticized; the plasticizing effect of mutual mixing of the two parallel screw bodies is better than that of a single screw body, so that plasticizing can be improved, the density of a product is increased, the bonding strength of the product is improved, and the quality of a finished product is enhanced.

Description

Technical Field

[0001] This utility model relates to the technical field of screws, specifically a screw for solid core tape. Background Technology

[0002] The extrusion screw feeds solid raw materials from the feed port into the extruder barrel through rotation. During this process, the raw materials are gradually heated and transformed into a molten state due to the friction of the rotating screw and the action of the external heating system. The molten material is then pushed to the discharge port of the barrel by the helical motion of the extruder screw and discharged through the die, completing the extrusion molding process.

[0003] According to Chinese Patent No. CN215396742U, a novel rubber and plastic extruder with heating function is disclosed. The extruder includes at least a mounting body, which includes at least a base. The base has a mounting groove and a fixing groove. An extruder is provided in the mounting groove. The extruder includes an extrusion cylinder located on the surface of the mounting groove. An extrusion chamber is provided inside the extrusion cylinder. A heating groove is provided inside the wall of the extrusion cylinder, and an electric heating tube is installed in the heating groove. An ejector is installed inside the extrusion chamber. The ejector includes a servo motor bolted to the fixing groove. A transmission belt is sleeved on the surface of the servo motor. A screw is sleeved on the transmission belt and located inside the extrusion chamber. A transmission wheel is provided on the screw and located outside the extrusion cylinder. The servo motor and the transmission wheel are connected via the transmission belt. A material connector is connected to the top of the extrusion cylinder, and a feeding body is connected to the material connector. The feeding body includes a hopper connected to the material connector.

[0004] In the above scheme, a single screw is used to stir and push the material, which still has the following disadvantages: a single screw cannot mesh and mix during use, which reduces the plasticization degree of the material, reduces the product density, and reduces the product adhesion strength. Utility Model Content

[0005] The purpose of this invention is to provide a special screw for solid core tape, so as to solve the problem that a single screw cannot mesh and mix during use, which reduces the plasticization degree of the material, reduces the product density, and reduces the product's adhesive strength.

[0006] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a special screw for solid core tape, including an extrusion section, the extrusion section being located at the leftmost end of the screw body, a pre-extrusion section being provided on the screw body, an exhaust section being provided on the screw body, a plasticizing section being provided on the screw body, a pre-plasticizing section being provided on the screw body, and a conveying section being provided on the screw body.

[0007] Preferably, the pre-extrusion section is arranged at the right side of the extrusion section, the extrusion section is in a medium pressure zone, the pre-extrusion section is restored to zero pressure, and the gap of the surface thread of the pre-extrusion section decreases from right to left.

[0008] Preferably, the exhaust section is arranged at the right side of the pre-extrusion section, and the exhaust section is in a high pressure zone.

[0009] Preferably, the plasticizing section is arranged at the right side of the exhaust section, and the plasticizing section is in a high pressure zone.

[0010] Preferably, the pre-plasticizing section is arranged at the right side of the plasticizing section, the pre-plasticizing section is in a zero pressure to low pressure zone, and the gap of the surface thread of the pre-plasticizing section decreases from right to left.

[0011] Preferably, the conveying section is arranged at the right side of the pre-plasticizing section, and the conveying section is in a zero pressure zone, and the gap of the surface thread of the conveying section decreases from right to left.

[0012] Compared with the prior art, the whole-core adhesive tape special screw adopting the technical scheme has the following advantages

[0013] Beneficial effects:

[0014] I. Two screw bodies are installed in a single extruder, and the materials are mixed, plasticized, exhausted and extruded through the mutual engagement of the two screw bodies. Therefore, the screw bodies can fully plasticize the materials in the barrel. Therefore, compared with a single screw body, the plasticizing effect of the mutual mixing of the two parallel screw bodies is stronger than that of a single screw body, thereby increasing plasticization, increasing the density of the product, improving the adhesive strength of the product, and strengthening the quality of the finished product.

[0015] II. When the two parallel screw bodies are engaged and mixed, the materials between the two parallel screw bodies are extruded out of the interior of the extruder. Therefore, the yield can be linearly increased with the increase of the rotation speed of the screw body in the interior of the extruder, thereby increasing the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a side view of the embodiment.

[0017] Figure 2 It is a side view of the embodiment. Figure 1 It is an enlarged schematic view of the local structure at A in the middle.

[0018] Figure 3 It is a side view of the embodiment. Figure 1 It is an enlarged schematic view of the local structure at B in the middle.

[0019] Figure 4 It is a side view of the embodiment. Figure 1 It is an enlarged schematic view of the local structure at C in the middle.

[0020] Figure 5 As Figure 1 The local structure at D is enlarged.

[0021] Figure 6 As Figure 1 The local structure at E is enlarged.

[0022] Figure 7 As Figure 1 The local structure at F is enlarged.

[0023] In the figure: 1, screw body; 2, extrusion section; 3, pre-extrusion section; 4, exhaust section; 5, plasticizing section; 6, pre-plasticizing section; 7, conveying section. DETAILED DESCRIPTION

[0024] The preferred embodiment of the utility model is described in detail below with reference to the accompanying drawings.

[0025] As Figures 1-7 shown, a whole core adhesive tape special screw includes an extrusion section 2, the extrusion section 2 is arranged at the leftmost end of the screw body 1, the screw body 1 is provided with a pre-extrusion section 3, the screw body 1 is provided with an exhaust section 4, the screw body 1 is provided with a plasticizing section 5, the screw body 1 is provided with a pre-plasticizing section 6, the screw body 1 is provided with a conveying section 7, the pre-extrusion section 3 is arranged at the right side of the extrusion section 2, the extrusion section 2 is in the medium pressure zone, the pre-extrusion section 3 restores to zero pressure, the gap of the surface thread of the pre-extrusion section 3 changes from big to small from right to left.

[0026] In use, two screw bodies 1 are installed in a single extruder, the two screw bodies 1 are meshed with each other, mixing, plasticizing, exhausting and extruding, so that the screw body 1 can fully plasticize the material in the barrel, and thus the plasticizing effect of the two parallel screw bodies 1 mixing with each other is stronger than that of a single screw body 1, thereby increasing plasticization, increasing the density of the product, improving the adhesive strength of the product and strengthening the quality of the finished product.

[0027] As Figures 1-7 shown, the exhaust section 4 is arranged at the right side of the pre-extrusion section 3, the exhaust section 4 is in the high pressure zone, the plasticizing section 5 is arranged at the right side of the exhaust section 4, the plasticizing section 5 is in the high pressure zone, the pre-plasticizing section 6 is arranged at the right side of the plasticizing section 5, the pre-plasticizing section 6 is in the zero pressure to low pressure zone, the gap of the surface thread of the pre-plasticizing section 6 changes from big to small from right to left, the conveying section 7 is at the right side of the pre-plasticizing section 6, the conveying section 7 is in the zero pressure zone, and the gap of the surface thread of the conveying section 7 changes from big to small from right to left.

[0028] In use, when the two parallel screw bodies 1 are meshed with each other and mixing, the material between the two parallel screw bodies 1 is extruded out of the inside of the extruder, so that the yield can be linearly increased with the increase of the rotating speed of the screw body 1 in the inside of the extruder, thereby increasing the production efficiency.

[0029] The above merely describes a preferred embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A special screw for core gum tape, comprising an extrusion section (2) provided at the leftmost end of a screw body (1), characterized in that, The screw body (1) is provided with a pre-extrusion section (3), an exhaust section (4), a plasticizing section (5), a pre-plasticizing section (6) and a conveying section (7).

2. A screw for core tape speciality as claimed in claim 1 wherein: The pre-extrusion section (3) is arranged at the right side of the extrusion section (2), the extrusion section (2) is in a medium pressure zone, the pre-extrusion section (3) is restored to zero pressure, and the gap of the surface thread of the pre-extrusion section (3) is gradually reduced from right to left.

3. A screw for core tape speciality as claimed in claim 1 wherein: The exhaust section (4) is arranged at the right side of the pre-extrusion section (3), and the exhaust section (4) is in a high pressure zone.

4. A screw for core tape according to claim 1, characterized in that: The plasticizing section (5) is arranged at the right side of the exhaust section (4), and the plasticizing section (5) is in a high pressure zone.

5. A screw for core tape speciality as claimed in claim 1 wherein: The pre-plasticizing section (6) is arranged at the right side of the plasticizing section (5), the pre-plasticizing section (6) is in a zero pressure to low pressure zone, and the gap of the surface thread of the pre-plasticizing section (6) is gradually reduced from right to left.

6. A screw for core tape speciality as claimed in claim 1 wherein: The conveying section (7) is arranged at the right side of the pre-plasticizing section (6), the conveying section (7) is in a zero pressure zone, and the gap of the surface thread of the conveying section (7) is gradually reduced from right to left.

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