Screw for PFA cable
By introducing a heating mechanism and a uniform heating structure into the screw for PFA cables, the bonding and blockage problems caused by the temperature reduction of PFA materials are solved, ensuring uniformity of discharge and product quality.
Patent Information
- Application Number
- CN202420862307.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-24
AI Technical Summary
The temperature decrease in PFA material during melting and extrusion leads to an increase in viscosity and a decrease in fluidity, causing the material to bond to the screw surface, reducing the uniformity of the discharge and potentially causing machine clogging.
A screw for PFA cable is designed, including a heating mechanism, including a heat conduction pipe, an electric heating pipe and a heat conduction plate. Through the through-hole structure evenly distributed by the mounting frame and bearing, uniform heating of the screw body is achieved to avoid material temperature reduction and sticking. Knot.
It effectively avoids the bonding problem caused by the temperature reduction of the material during discharge, ensures the uniformity of the discharge, prevents machine clogging, and improves product quality.
Smart Images
Figure CN222135870U_ABST
Abstract
Description
Technical Field
[0001] The utility model application relates to the technical field of screw rods, in particular to a screw rod for PFA cables. Background Art
[0002] The screw is a key component in the extruder. During the processing of PFA cables, a screw is needed to extrude PFA (polyvinyl fluoride copolymer) materials.
[0003] For example, publication number: CN209466647U discloses "a plastic extruder screw", which includes a rod body, an outer spiral of the rod body with a pipe sleeve, the pipe sleeve has a threaded portion integrally formed with the pipe sleeve, a through groove penetrating one end of the rod body is opened inside the rod body, a cooling water pipe is arranged in the through groove, two branch pipes are welded and fixed on the rod body, the two branch pipes are connected with the through groove inside the rod body, both ends of the cooling water pipe pass through the branch pipes and are clamped and fixed, and both ends of the cooling water pipe are fixed with threaded rings for convenient connection with the external water supply pipe.
[0004] However, in the prior art, during the process of melt extrusion of PFA (polyvinyl fluoride copolymer) material, the temperature of the material will gradually decrease. When the screw extrude the molten PFA (polyvinyl fluoride copolymer) material, as the temperature of the material decreases, the viscosity will gradually increase and the fluidity will gradually decrease, causing the material to adhere to the surface of the screw, resulting in a decrease in the uniformity of the material discharge during extrusion, thereby reducing the quality of the product. At the same time, as the temperature of the material continues to decrease, the material will solidify on the surface of the screw, causing machine blockage. Summary of the invention
[0005] In order to solve the problem that as the temperature of the material decreases, the viscosity gradually increases and the fluidity gradually decreases, causing the material to stick to the surface of the screw, resulting in a decrease in the uniformity of the material when it is extruded, reducing the quality of the product, and at the same time, as the temperature of the material continues to decrease, the material will solidify on the surface of the screw, causing machine blockage, the utility model provides a screw for PFA cables to solve the above problems.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A screw for a PFA cable comprises a screw mechanism, a heating mechanism is installed at one end of the screw mechanism, the screw mechanism comprises a screw body, a screw mounting tube is fixedly connected to one end of the screw body, the heating mechanism comprises a heat conducting tube, the heat conducting tube is plugged into the screw mounting tube, and the heat conducting tube is plugged into the screw body, a fixing plate is fixedly connected inside the heat conducting tube, an electric heating tube is fixedly connected to the surface of the fixing plate, and the electric heating tube is plugged into the heat conducting tube.
[0008] Furthermore, a groove is provided inside the screw body, and the heat conducting pipe is located inside the groove and plugged into the screw body.
[0009] Furthermore, a fixed pipe is fixedly connected to the surface of the heat conduction pipe, and a mounting frame is fixedly connected to the side surface of the fixed pipe.
[0010] Furthermore, a plurality of bearings are fixedly connected to the surface of the heat conducting pipe, the plurality of bearings are evenly distributed on the surface of the heat conducting pipe, and the plurality of bearings are rotatably connected to the screw mounting tube and the inside of the screw body respectively.
[0011] Furthermore, a plurality of No. 1 through holes are arranged on the surface of the heat conduction pipe, and the plurality of No. 1 through holes are evenly distributed on the surface of the heat conduction pipe.
[0012] Furthermore, a plurality of heat conducting plates are fixedly connected to the surface of the electric heating tube, and the plurality of heat conducting plates are evenly distributed on the surface of the electric heating tube.
[0013] Furthermore, a plurality of No. 2 through holes are arranged on the surface of the heat conducting plate, and the plurality of No. 2 through holes are evenly distributed on the surface of the heat conducting plate.
[0014] Compared with the prior art, the beneficial effects of the utility model are:
[0015] 1. In the utility model, the installation and fixation are performed by the mounting frame and the equipment. During the rotation of the screw body, the inside of the screw body is heated by the electric heating tube. At this time, the screw body can heat the PFA material on its surface to avoid the temperature of the material being reduced during the discharge process, causing the material to adhere to the surface of the screw body.
[0016] 2. In the utility model, when the electric heating tube heats the inside of the screw body, the heat conducting plate conducts the heat evenly, dissipates the heat evenly through the No. 2 through hole, and transfers the heat through the heat conducting tube, and then transfers the heat evenly to the surface of the screw body through the No. 1 through hole, so that the screw body can be heated more evenly, so that the material can be heated evenly. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0018] Figure 1 A three-dimensional structural schematic diagram of a screw rod for a PFA cable is proposed for the utility model;
[0019] Figure 2 The utility model provides a schematic diagram of a top view of a screw rod for a PFA cable;
[0020] Figure 3 The utility model provides a cross-sectional three-dimensional structural schematic diagram of a screw mechanism in a screw for a PFA cable;
[0021] Figure 4 The utility model provides a three-dimensional structural schematic diagram of a heat conduction plate in a screw for a PFA cable.
[0022] The meanings of the reference numerals in the figure are: 1. screw mechanism; 11. screw body; 12. screw mounting tube; 2. heating mechanism; 21. heat conducting tube; 22. fixing tube; 23. mounting frame; 24. fixing plate; 25. electric heating tube; 26. bearing; 27. through hole No. 1; 28. heat conducting plate; 29. through hole No. 2. DETAILED DESCRIPTION
[0023] In order to make the purpose, features, and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described below are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0024] Reference Figure 1-Figure 4 A screw for a PFA cable comprises a screw mechanism 1, a heating mechanism 2 is installed at one end of the screw mechanism 1, the screw mechanism 1 comprises a screw body 11, a screw mounting tube 12 is fixedly connected to one end of the screw body 11, the heating mechanism 2 comprises a heat conducting pipe 21, the heat conducting pipe 21 is plugged into the screw mounting tube 12, and the heat conducting pipe 21 is plugged into the screw body 11, a fixing plate 24 is fixedly connected inside the heat conducting pipe 21, an electric heating pipe 25 is fixedly connected to the surface of the fixing plate 24, the electric heating pipe 25 is plugged into the heat conducting pipe 21, a groove is arranged inside the screw body 11, and the heat conducting pipe 21 is located inside the groove and plugged into the screw body 11.
[0025] Specifically, the screw mechanism 1 is installed and fixed to the extruder, and is also installed and fixed to the equipment through the mounting frame 23. During the rotation of the screw body 11, the inside of the screw body 11 is heated by the electric heating tube 25. At this time, the screw body 11 can heat the PFA material on its surface to prevent the temperature of the material from decreasing during the discharge process, causing the material to adhere to the surface of the screw body 11.
[0026] As an optimization solution, Figure 3 and Figure 4As shown, a fixed tube 22 is fixedly connected to the surface of the heat-conducting tube 21, a mounting frame 23 is fixedly connected to the side of the fixed tube 22, a plurality of bearings 26 are fixedly connected to the surface of the heat-conducting tube 21, the plurality of bearings 26 are evenly distributed on the surface of the heat-conducting tube 21, and the plurality of bearings 26 are respectively rotatably connected to the screw mounting tube 12 and the inside of the screw body 11, a plurality of No. 1 through holes 27 are arranged on the surface of the heat-conducting tube 21, the plurality of No. 1 through holes 27 are evenly distributed on the surface of the heat-conducting tube 21, a plurality of heat-conducting plates 28 are fixedly connected to the surface of the electric heating tube 25, the plurality of heat-conducting plates 28 are evenly distributed on the surface of the electric heating tube 25, a plurality of No. 2 through holes 29 are arranged on the surface of the heat-conducting plate 28, the plurality of No. 2 through holes 29 are evenly distributed on the surface of the heat-conducting plate 28.
[0027] Specifically, when the electric heating tube 25 heats the inside of the screw body 11, the heat conducting plate 28 conducts the heat evenly, dissipates the heat evenly through the No. 2 through hole 29, and transfers the heat through the heat conducting tube 21, and then transfers the heat evenly to the surface of the screw body 11 through the No. 1 through hole 27, so that the screw body 11 can be heated more evenly, so that it can heat the material evenly.
[0028] Working principle: The screw mechanism 1 is fixed to the extruder and is also fixed to the equipment through the mounting frame 23. During the rotation of the screw body 11, the electric heating tube 25 heats the inside of the screw body 11, and the screw body 11 can heat the PFA material on its surface.
[0029] When the electric heating tube 25 heats the inside of the screw body 11, the heat conducting plate 28 conducts the heat evenly, dissipates the heat evenly through the No. 2 through hole 29, transfers the heat through the heat conducting tube 21, and then transfers the heat evenly to the surface of the screw body 11 through the No. 1 through hole 27.
[0030] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.
[0031] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A screw for a PFA cable, characterized in that: The invention comprises a screw mechanism (1), wherein a heating mechanism (2) is installed at one end of the screw mechanism (1), wherein the screw mechanism (1) comprises a screw body (11), wherein one end of the screw body (11) is fixedly connected to a screw mounting tube (12), wherein the heating mechanism (2) comprises a heat conducting tube (21), wherein the heat conducting tube (21) is plugged into the screw mounting tube (12), and the heat conducting tube (21) is plugged into the screw body (11), wherein a fixing plate (24) is fixedly connected inside the heat conducting tube (21), wherein an electric heating tube (25) is fixedly connected to the surface of the fixing plate (24), and wherein the electric heating tube (25) is plugged into the heat conducting tube (21).
2. The screw rod for PFA cable according to claim 1, characterized in that: A groove is provided inside the screw body (11), and the heat conducting pipe (21) is located inside the groove and plugged into the screw body (11).
3. The screw rod for PFA cable according to claim 1, characterized in that: A fixed tube (22) is fixedly connected to the surface of the heat conducting tube (21), and a mounting frame (23) is fixedly connected to the side of the fixed tube (22).
4. The screw rod for PFA cable according to claim 1, characterized in that: A plurality of bearings (26) are fixedly connected to the surface of the heat conducting pipe (21); the plurality of bearings (26) are evenly distributed on the surface of the heat conducting pipe (21); and the plurality of bearings (26) are rotatably connected to the inside of the screw mounting tube (12) and the screw body (11), respectively.
5. The screw rod for PFA cable according to claim 1, characterized in that: The surface of the heat conducting pipe (21) is provided with a plurality of number one through holes (27), and the plurality of number one through holes (27) are evenly distributed on the surface of the heat conducting pipe (21).
6. The screw rod for PFA cable according to claim 1, characterized in that: A plurality of heat conducting plates (28) are fixedly connected to the surface of the electric heating tube (25), and the plurality of heat conducting plates (28) are evenly distributed on the surface of the electric heating tube (25).
7. The screw rod for PFA cable according to claim 6, characterized in that: The surface of the heat conducting plate (28) is provided with a plurality of No. 2 through holes (29), and the plurality of No. 2 through holes (29) are evenly distributed on the surface of the heat conducting plate (28).