PVC (polyvinyl chloride) yarn extruder

Abstract

The utility model relates to the technical field of PVC (polyvinyl chloride) yarn production, in particular to a PVC yarn extruder which comprises a cylinder, the cylinder is arranged on a support frame, a heating plate is correspondingly mounted on the inner wall of the cylinder, and an extrusion head is arranged at one end of the cylinder; a rotating shaft is coaxially arranged in the cylinder, the end part of the rotating shaft is rotatably connected with the end part of the cylinder, a first spiral blade is arranged on the rotating shaft, the edge of the first spiral blade is in clearance fit with the inner wall of the cylinder, an arc-shaped scraper blade is arranged between two adjacent blades of the first spiral blade, and the side surface of the scraper blade corresponds to the inner wall of the cylinder. When the PVC yarn extruder is used, the plurality of scraping plates are arranged between the first spiral blades, so that raw materials adhered to the pipe wall of the cylinder can be scraped, and the inclined scraping plates are of arc-shaped structures corresponding to the inner wall of the cylinder; the inner wall of the cylinder can be fully scraped, and contact heating of raw materials and the inner wall of the cylinder is not affected.

Description

[0001] Technical field.

[0002] This utility model relates to the field of PVC yarn production technology, and in particular to a PVC yarn extruder.

[0003] Background technology.

[0004] PVC is short for polyethylene material. Polyethylene yarn is a type of yarn made of polyethylene. It is produced by pressing polyethylene material into different cross-sectional shapes through an extrusion molding machine, followed by cooling, stretching, and winding processes.

[0005] When producing PVC yarn using an extruder, the PVC raw material needs to be heated. However, the molten PVC material easily adheres to the extruder tube wall during extrusion. Prolonged adhesion to the tube wall can affect the heating efficiency of other materials and even cause deterioration due to prolonged high-temperature heating, thus impacting the quality of the extruded PVC yarn. To address these issues, we propose a PVC yarn extruder.

[0006] Utility model content.

[0007] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a PVC yarn extruder.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a PVC yarn extruder is designed, including a cylinder, which is mounted on a support frame and a heating plate is installed on the inner wall of the cylinder, and an extrusion head is provided at one end of the cylinder;

[0009] A rotating shaft is coaxially arranged inside the cylinder, and the end of the rotating shaft is rotatably connected to the end of the cylinder. A first helical blade is arranged on the rotating shaft, and the edge of the first helical blade is in clearance fit with the inner wall of the cylinder. An arc-shaped scraper is arranged between two adjacent blades of the first helical blade, and the side of the scraper corresponds to the inner wall of the cylinder. The scraper is fixed to the rotating shaft by at least one connecting rod.

[0010] The end of the rotating shaft away from the extrusion head passes through the cylinder and is connected to a drive mechanism that drives the rotating shaft to rotate. A feed hopper is provided at the top of the cylinder near the drive mechanism.

[0011] Preferably, the cylinder is composed of multiple sleeves fixed coaxially, and adjacent sleeves are connected by flanges.

[0012] Preferably, the driving mechanism comprises a first pulley coaxially mounted on the end of the rotating shaft, and a second pulley is arranged below the first pulley and connected with the first pulley through a belt, and a first driving motor is coaxially mounted on the second pulley and mounted on the support frame.

[0013] Preferably, the top of the feeding hopper is wide-mouthed, a stirring shaft is arranged in the feeding hopper, the top of the stirring shaft is rotatably mounted on the cover plate, the cover plate is fixed on the top of the feeding hopper, a second driving motor is arranged on the cover plate and fixed with the stirring shaft, an obliquely arranged scraping plate is arranged on the side of the stirring shaft and fixed with the inner wall of the feeding hopper and the stirring shaft through a stirring rod.

[0014] Preferably, a heating plate is mounted on the inner wall of the feeding hopper.

[0015] Preferably, the bottom of the stirring shaft is rotatably mounted on the connecting frame, the other end of the connecting frame is fixed with the bottom of the inner wall of the feeding hopper, and a second spiral blade is mounted on the bottom of the stirring shaft and gap-fitted with the inner wall of the feeding hopper at the edge.

[0016] Preferably, a feeding port is formed on one side of the top of the cover plate, a feeding pipeline is arranged above the feeding port and fixed on the cover plate, and the feeding pipeline is correspondingly arranged on the side of the second driving motor.

[0017] The design scheme of the utility model has the advantages that in the application process,

[0018] 1. The PVC yarn extruder is provided with a plurality of scrapers between the blades of the first spiral blade, the adhered raw materials on the cylinder wall can be scraped off during the conveying of the raw materials by the first spiral blade, and the inclined scraper is in arc-shaped structure corresponding to the inner wall of the cylinder, so that the inner wall of the cylinder can be fully scraped without affecting the contact and heating of the raw materials and the inner wall of the cylinder.

[0019] 2. The PVC yarn extruder heats the raw materials about to enter the cylinder through the stirring rod and the heating plate in the feeding hopper, ensures that the raw materials will not solidify when being discharged due to temperature reduction, and improves the extrusion effect of the PVC in the extruder.

[0020] BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 Structure diagram of the utility model Figure One ;

[0022] Figure 2 Structure diagram of the utility model Figure Two ;

[0023] Figure 3 It is the internal structure schematic view of the cylinder of the utility model;

[0024] Figure 4 It is the internal structure schematic view of the feeding hopper of the utility model.

[0025] In the figure: 1, support frame; 2, cylinder; 3, extrusion head; 4, first belt pulley; 5, belt; 6, second belt pulley; 7, first drive motor; 8, feeding hopper; 9, rotating shaft; 10, first spiral blade; 11, scraper; 12, connecting rod; 13, cover plate; 14, feeding pipeline; 15, feeding port; 16, second drive motor; 17, stirring shaft; 18, material scraping plate; 19, stirring rod; 20, connecting frame; 21, second spiral blade.

[0026] Specific implementation.

[0027] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0028] Reference Figures 1-4 A PVC yarn extruder, including cylinder 2, cylinder 2 is fixed coaxially by multiple sleeves, and two adjacent sleeves are connected by flange to facilitate the disassembly of cylinder 2, cylinder 2 is arranged on support frame 1, that is, the sleeve is detachably mounted on support frame 1, and a heating plate is correspondingly mounted on the inner wall of cylinder 2, which can heat the PVC raw materials added into cylinder 2, and an extrusion head 3 is arranged at one end of cylinder 2;

[0029] As Figure 1 And Figure 3 As shown in the drawings, rotating shaft 9 is coaxially arranged in the inside of cylinder 2, the end of rotating shaft 9 is rotatably connected with the end of cylinder 2, first spiral blade 10 is arranged on rotating shaft 9, the edge of first spiral blade 10 is gap-fitted with the inner wall of cylinder 2, arc-shaped scraper 11 is arranged between two adjacent blades of first spiral blade 10, the side surface of scraper 11 corresponds to the inner wall of cylinder 2, and scraper 11 is fixed with rotating shaft 9 through at least one connecting rod 12, the end of rotating shaft 9 away from extrusion head 3 penetrates cylinder 2 and is connected with a driving mechanism for driving rotating shaft 9 to rotate, when first spiral blade 10 rotates to convey the PVC raw materials added into cylinder 2, the PVC raw materials are pushed and extruded to extrusion head 3, when first spiral blade 10 extrudes and conveys the PVC raw materials, scraper 11 also rotates to scrape the inner wall of cylinder 2, so that the raw materials adhered to the inner wall of cylinder 2 can be separated from cylinder 2, preventing part of the raw materials from deteriorating due to continuous heating and affecting the forming quality of PVC yarn.

[0030] As shown in Figure 1 The driving mechanism comprises a first pulley 4 coaxially mounted on the end of the rotating shaft 9, and a second pulley 6 is arranged below the first pulley 4, the second pulley 6 is connected with the first pulley 4 through a belt 5, a first driving motor 7 is coaxially mounted on the second pulley 6, and the first driving motor 7 is mounted on the support frame 1, and under the transmission of the belt 5, the first driving motor 7 provides power for the rotation of the rotating shaft 9.

[0031] An inlet hopper 8 is arranged at the top of the cylinder 2 near the end of the driving mechanism, wherein, as shown in Figure 4 The top of the inlet hopper 8 is wide-mouthed, a stirring shaft 17 is arranged in the inlet hopper 8, the top of the stirring shaft 17 is rotatably mounted on the cover plate 13, and the cover plate 13 is fixed on the top of the inlet hopper 8, a second driving motor 16 is arranged on the cover plate 13, the second driving motor 16 is fixed with the stirring shaft 17, an inclined material shoveling plate 18 is arranged on the side of the stirring shaft 17, the material shoveling plate 18 is fixed with the inner wall of the inlet hopper 8, and the material shoveling plate 18 is fixed with the stirring shaft 17 through a stirring rod 19;

[0032] Specifically, as shown in Figure 1 and Figure 2 A feeding port 15 is arranged on one side of the top of the cover plate 13, a feeding pipe 14 is arranged above the feeding port 15, the feeding pipe 14 is fixed on the cover plate 13, and the feeding pipe 14 is correspondingly arranged on the side of the second driving motor 16, when the extruder is in operation, PVC raw materials are added into the inlet hopper 8 from the feeding pipe 14, the bottom of the stirring shaft 17 is rotatably mounted on a connecting frame 20, and the other end of the connecting frame 20 is fixed with the inner wall bottom of the inlet hopper 8, a second spiral blade 21 is mounted on the bottom of the stirring shaft 17, the edge of the second spiral blade 21 is in clearance fit with the inner wall of the inlet hopper 8, the second spiral blade 21 accelerates the flow rate of the raw materials flowing into the cylinder 2 in continuous rotation, a heating plate for heating the raw materials in the inlet hopper 8 is mounted on the inner wall of the inlet hopper 8, the stirring rod 19 is continuously rotated to stir the raw materials added into the inlet hopper 8, so that the raw materials can be uniformly heated, and the arrangement of the material shoveling plate 18 also avoids the raw materials from sticking to the inner wall of the inlet hopper 8, the raw materials entering the cylinder 2 will be extruded from the extrusion head 3 under the extrusion of the first spiral blade 10, thereby forming the required cross-sectional shape, and finally the yarn product is made through cooling, stretching, winding and other processes.

[0033] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and 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 within the protection scope of the present application.

Claims

1. A PVC yarn extruder characterized by: It includes a cylinder (2), the cylinder (2) is arranged on the support frame (1), and the heating plate is arranged on the inner wall of the cylinder (2) correspondingly, and the extrusion head (3) is arranged at one end of the cylinder (2); The rotating shaft (9) is coaxially arranged in the cylinder (2), the end of the rotating shaft (9) is rotatably connected with the end of the cylinder (2), and the first spiral blade (10) is arranged on the rotating shaft (9), the edge of the first spiral blade (10) is gap-fitted with the inner wall of the cylinder (2), and the arc-shaped scraper (11) is arranged between the two adjacent blades of the first spiral blade (10), the side of the scraper (11) corresponds to the inner wall of the cylinder (2), and the scraper (11) is fixed with the rotating shaft (9) through at least one connecting rod (12); The end of the rotating shaft (9) away from the extrusion head (3) penetrates the cylinder (2) and is connected with the driving mechanism for driving the rotating shaft (9) to rotate, and the feeding hopper (8) is arranged at the end of the top of the cylinder (2) close to the driving mechanism.

2. A PVC yarn extruder as claimed in claim 1, wherein: The cylinder (2) is composed of a plurality of sleeve pipes fixed coaxially, and the adjacent two sleeve pipes are connected through flanges.

3. A PVC yarn extruder as claimed in claim 1, wherein: The driving mechanism includes the first pulley (4), the first pulley (4) is coaxially arranged on the end of the rotating shaft (9), and the second pulley (6) is arranged below the first pulley (4), the second pulley (6) is connected with the first pulley (4) through the belt (5), and the first driving motor (7) is coaxially arranged on the second pulley (6), and the first driving motor (7) is arranged on the support frame (1).

4. A PVC yarn extruder as claimed in claim 1, wherein: The top of the feeding hopper (8) is wide-mouthed, the stirring shaft (17) is arranged in the feeding hopper (8), the top of the stirring shaft (17) is rotatably arranged on the cover plate (13), the cover plate (13) is fixed on the top of the feeding hopper (8), the second driving motor (16) is arranged on the cover plate (13), the second driving motor (16) is fixed with the stirring shaft (17), the inclined shovel plate (18) is arranged on the side of the stirring shaft (17), the shovel plate (18) is fixed with the inner wall of the feeding hopper (8), and the shovel plate (18) is fixed with the stirring shaft (17) through the stirring rod (19).

5. A PVC yarn extruder as claimed in claim 4, characterized in that: The heating plate is arranged on the inner wall of the feeding hopper (8).

6. A PVC yarn extruder as claimed in claim 4, wherein: The bottom of the stirring shaft (17) is rotatably arranged on the connecting frame (20), the other end of the connecting frame (20) is fixed with the inner wall bottom of the feeding hopper (8), and the second spiral blade (21) is arranged on the bottom of the stirring shaft (17), and the edge of the second spiral blade (21) is gap-fitted with the inner wall of the feeding hopper (8).

7. A PVC yarn extruder as claimed in claim 4, wherein: The feeding port (15) is arranged on one side of the top of the cover plate (13), and the feeding pipeline (14) is arranged above the feeding port (15), the feeding pipeline (14) is fixed on the cover plate (13), and the feeding pipeline (14) is arranged on the side of the second driving motor (16) correspondingly.

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