Screw mixing structure for cable extruder

Abstract

The utility model proposes cable extruder's screw rod mixing structure, especially relates to cable extruder screw rod mixing technical field, including base, the top fixedly connected with support seat of base, the utility model discloses before using, first feed auger, mixing shaft, second feed auger and third feed auger are in turn slidably set in the outside of fixed shaft, conveying material is carried out to first feed auger and second feed auger, when conveying, preliminarily mixes to it, and when material is placed in mixing shaft and third feed auger, can stay and mix, prolongs the retention time of material in mixing pipe, improves mixing efficiency, and the stem of first feed auger is circular truncated cone structure, improves the depth of groove of first feed auger end, prolongs the retention time of material, material enters through feed inlet, when feeding, the material is preliminarily dispersed by the distributing disc, and the material is conveyed downward through the discharging auger, which plays an auxiliary feeding effect and prevents material bridging and material breakage.

Description

Technical Field

[0001] This utility model relates to the field of fireproof roll material technology, and in particular to the screw hybrid structure of a cable extruder. Background Technology

[0002] As the core carrier of power transmission and signal communication, the performance of the outer insulation / sheath material (such as PVC, PE, cross-linked polyethylene XLPE, etc.) of cables directly affects their safety, durability, and environmental adaptability. Cable extruders are key equipment for molding these materials, and the screw-mixing structure, as the "heart" of the extruder, is responsible for melting, mixing, plasticizing, and conveying the plastic raw materials, directly determining the uniformity, mechanical strength, and appearance quality of the cable sheath.

[0003] The existing screw mixing structure requires assembly, which is quite troublesome. When materials enter the material conveying tank, bridging can easily occur, leading to material interruption. Since the screw conveys and mixes continuously, material interruption will affect the continuous conveying of materials.

[0004] Therefore, a screw hybrid structure for cable extruders was proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to propose a screw hybrid structure for a cable extruder to solve the problem mentioned in the background art of achieving better flame retardant effect and improving the applicability of fireproof rolls in the event of a fire.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a screw mixing structure for a cable extruder, comprising a base, a support seat fixedly connected to the top of the base, a first motor fixedly connected to the top of the support seat, a mixing pipe fixedly connected to the top of the base, a heating mechanism and a stirring mechanism provided inside the mixing pipe, the stirring mechanism comprising a fixed shaft, a first conveying auger, a mixing shaft, a second conveying auger, and a third conveying auger, the fixed shaft being rotatably connected to the inner side of the mixing pipe, the first conveying auger being slidably sleeved on the outer side of the fixed shaft, the mixing shaft being slidably sleeved on the outer side of the fixed shaft, the second conveying auger being slidably sleeved on the outer side of the fixed shaft, the third conveying auger being slidably sleeved on the outer side of the fixed shaft, and a locking mechanism provided at one end of the fixed shaft.

[0007] Preferably, the outer side of the fixed shaft is integrally formed with teeth, and the inner sides of the first conveying auger, the mixing shaft, the second conveying auger and the third conveying auger are all provided with tooth grooves.

[0008] Preferably, the locking mechanism includes an annular groove, a limiting sleeve, and a second bolt. An annular groove is provided on the outer side of one end of the fixed shaft, and a limiting sleeve is slidably fitted on the outer side of the annular groove. A second bolt is inserted through the outer side of the limiting sleeve, and a threaded hole is provided on the outer side of the annular groove.

[0009] Preferably, one end of the limiting sleeve abuts against one end of the third conveying auger, and four threaded holes and four second bolts are provided.

[0010] Preferably, a connection mechanism is provided between one end of the output shaft of the first motor and one end of the fixed shaft. The connection mechanism includes a toothed groove, a post, and a first bolt. The toothed groove is provided on the inner side of the output shaft of the first motor. A post is integrally formed on one end of the fixed shaft. Teeth are integrally formed on the outer side of the post. A first bolt is inserted through the outer side of the output shaft of the first motor.

[0011] Preferably, the heating mechanism includes a heating wire, and a cavity is formed on the inner side of the mixing tube, with the heating wire disposed on the inner side of the cavity.

[0012] Preferably, a feeding mechanism is provided on the outside of the mixing pipe. The feeding mechanism includes a feeding bin, a feeding port, a second motor, a feeding auger, and a distributing disc. The feeding bin is fixedly connected to the outside of the mixing pipe. The feeding port is fixedly connected to the top of the feeding bin. The second motor is fixedly connected to the top of the feeding bin. One end of the output shaft of the second motor is fixedly connected to the feeding auger. The distributing disc is fixedly connected to the outside of the feeding auger.

[0013] Compared with the prior art, the beneficial effects of this utility model are that it provides a screw mixing structure for a cable extruder, which has the following advantages:

[0014] 1. Before use, the first conveying auger, mixing shaft, second conveying auger and third conveying auger are sequentially slidably sleeved on the outside of the fixed shaft. The material is conveyed by the first conveying auger and the second conveying auger. During conveying, the material is initially mixed. When the material is placed on the mixing shaft and the third conveying auger, it can stay and mix, prolonging the residence time of the material in the mixing pipe and improving the mixing efficiency. The rod of the first conveying auger has a frustum structure, which increases the groove depth at the end of the first conveying auger and prolongs the residence time of the material.

[0015] 2. Slide the limiting sleeve onto the outside of the annular groove, and then fix it with the second bolt. The first conveying auger, mixing shaft, second conveying auger and third conveying auger are installed and fixed by the limiting sleeve, making assembly more convenient.

[0016] 3. The material enters through the feed inlet. During feeding, the distribution plate initially disperses the material, and the feeding auger conveys the material downwards, which helps to assist feeding and prevents the material from bridging and breaking. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the appearance and structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the fixed shaft structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the first material conveying auger structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the feeding mechanism of this utility model;

[0021] Figure 5 This is a utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0022] Figure 6 This is a utility model Figure 2 Enlarged structural diagram at point B.

[0023] In the diagram: 1. Base; 2. Support seat; 3. First motor; 4. Mixing pipe; 5. Heating wire; 6. Fixed shaft; 7. First conveying auger; 8. Mixing shaft; 9. Second conveying auger; 10. Third conveying auger; 11. Feed hopper; 12. Feed inlet; 13. Second motor; 14. Discharge auger; 15. Distributor plate; 16. Gear groove; 17. Insert post; 18. First bolt; 19. Annular groove; 20. Limiting sleeve; 22. Second bolt. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0026] Example

[0027] Please see Figure 1-6 The screw mixing structure of the cable extruder of this utility model includes a base 1, a support seat 2 fixedly connected to the top of the base 1, a first motor 3 fixedly connected to the top of the support seat 2, a mixing pipe 4 fixedly connected to the top of the base 1, a heating mechanism and a stirring mechanism provided inside the mixing pipe 4, the stirring mechanism including a fixed shaft 6, a first conveying auger 7, a mixing shaft 8, a second conveying auger 9 and a third conveying auger 10, the fixed shaft 6 being rotatably connected to the inside of the mixing pipe 4, the first conveying auger 7 being slidably sleeved on the outside of the fixed shaft 6, the mixing shaft 8 being slidably sleeved on the outside of the fixed shaft 6, the second conveying auger 9 being slidably sleeved on the outside of the fixed shaft 6, the third conveying auger 10 being slidably sleeved on the outside of the fixed shaft 6, and a locking mechanism being provided at one end of the fixed shaft 6.

[0028] Before use, the first conveying auger 7, the mixing shaft 8, the second conveying auger 9, and the third conveying auger 10 are sequentially slidably sleeved on the outside of the fixed shaft 6. The material is conveyed by the first conveying auger 7 and the second conveying auger 9, and is initially mixed during conveying. When the material is placed on the mixing shaft 8 and the third conveying auger 10, it can stay and mix, prolonging the residence time of the material in the mixing pipe 4 and improving the mixing efficiency. The rod of the first conveying auger 7 has a frustum structure, which increases the groove depth at the end of the first conveying auger 7 and prolongs the residence time of the material.

[0029] Furthermore, the outer side of the fixed shaft 6 is integrally formed with teeth, and the inner sides of the first conveying auger 7, the mixing shaft 8, the second conveying auger 9, and the third conveying auger 10 are all provided with tooth grooves.

[0030] To facilitate the fixing of the first conveying auger 7, the mixing shaft 8, the second conveying auger 9, and the third conveying auger 10, the locking mechanism includes an annular groove 19, a limiting sleeve 20, and a second bolt 22. An annular groove 19 is provided on the outer side of one end of the fixing shaft 6. The limiting sleeve 20 is slidably fitted on the outer side of the annular groove 19. The second bolt 22 is inserted through the outer side of the limiting sleeve 20. A threaded hole is provided on the outer side of the annular groove 19. The limiting sleeve 20 is slidably fitted on the outer side of the annular groove 19, and then fixed by the second bolt 22. The first conveying auger 7, the mixing shaft 8, the second conveying auger 9, and the third conveying auger 10 are installed and fixed by the limiting sleeve 20, making assembly more convenient.

[0031] Furthermore, one end of the limiting sleeve 20 abuts against one end of the third conveying auger 10, and four threaded holes and four bolts 22 are provided for each.

[0032] To facilitate connection, a connection mechanism is provided between one end of the output shaft of the first motor 3 and one end of the fixed shaft 6. The connection mechanism includes a toothed groove 16, a pin 17, and a first bolt 18. The toothed groove 16 is provided on the inner side of the output shaft of the first motor 3. The pin 17 is integrally formed on one end of the fixed shaft 6. The pin 17 is integrally formed on the outer side. The first bolt 18 is inserted through the outer side of the output shaft of the first motor 3. The fixed shaft 6 passes through and is rotatably connected to the mixing pipe 4 through a bearing, so that the pin 17 is inserted into the output shaft of the first motor 3, and then fixed with the first bolt 18.

[0033] Furthermore, the heating mechanism includes a heating wire 5, and a cavity is opened on the inner side of the mixing tube 4, with the heating wire 5 disposed on the inner side of the cavity.

[0034] To facilitate feeding, a feeding mechanism is provided on the outside of the mixing pipe 4. The feeding mechanism includes a feeding bin 11, a feeding port 12, a second motor 13, a discharge auger 14, and a distribution plate 15. The feeding bin 11 is fixedly connected to the outside of the mixing pipe 4. The feeding port 12 is fixedly connected to the top of the feeding bin 11. The second motor 13 is fixedly connected to the top of the feeding bin 11. One end of the output shaft of the second motor 13 is fixedly connected to the discharge auger 14. The distribution plate 15 is fixedly connected to the outside of the discharge auger 14. The material enters through the feeding port 12. During feeding, the distribution plate 15 initially disperses the material and conveys it downward through the discharge auger 14, which plays an auxiliary feeding role and prevents the material from bridging and breaking.

[0035] Working principle: Before use, the first conveying auger 7, mixing shaft 8, second conveying auger 9, and third conveying auger 10 are sequentially slidably sleeved on the outside of the fixed shaft 6. The first conveying auger 7 and the second conveying auger 9 convey the material, initially mixing it during conveying. When the material is placed on the mixing shaft 8 and the third conveying auger 10, it can stay and mix, extending the residence time of the material in the mixing pipe 4 and improving the mixing efficiency. The rod of the first conveying auger 7 has a frustum structure, which improves the first conveying auger... The increased groove depth at the end of auger 7 extends the material residence time. The limiting sleeve 20 is slidably fitted onto the outside of the annular groove 19, and then fixed with the second bolt 22. The first conveying auger 7, mixing shaft 8, second conveying auger 9, and third conveying auger 10 are installed and fixed through the limiting sleeve 20, making assembly more convenient. The material enters through the feed inlet 12. During feeding, the distribution plate 15 initially disperses the material, and the material is conveyed downwards through the discharge auger 14, which plays an auxiliary feeding role and prevents material bridging and breakage.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A screw hybrid structure for a cable extruder, characterized in that: The device includes a base (1), a support seat (2) fixedly connected to the top of the base (1), a first motor (3) fixedly connected to the top of the support seat (2), a mixing pipe (4) fixedly connected to the top of the base (1), a heating mechanism and a stirring mechanism provided on the inner side of the mixing pipe (4), the stirring mechanism including a fixed shaft (6), a first conveying auger (7), a mixing shaft (8), a second conveying auger (9) and a third conveying auger (10), a fixed shaft (6) rotatably connected to the inner side of the mixing pipe (4), a first conveying auger (7) slidably sleeved on the outer side of the fixed shaft (6), a mixing shaft (8) slidably sleeved on the outer side of the fixed shaft (6), a second conveying auger (9) slidably sleeved on the outer side of the fixed shaft (6), a third conveying auger (10) slidably sleeved on the outer side of the fixed shaft (6), and a locking mechanism provided at one end of the fixed shaft (6).

2. The screw hybrid structure of the cable extruder according to claim 1, characterized in that: The outer side of the fixed shaft (6) is integrally formed with teeth, and the inner sides of the first conveying auger (7), the mixing shaft (8), the second conveying auger (9) and the third conveying auger (10) are all provided with tooth grooves.

3. The screw hybrid structure of the cable extruder according to claim 1, characterized in that: The locking mechanism includes an annular groove (19), a limiting sleeve (20), and a second bolt (22). An annular groove (19) is provided on the outer side of one end of the fixed shaft (6). The limiting sleeve (20) is slidably sleeved on the outer side of the annular groove (19). The second bolt (22) is inserted through the outer side of the limiting sleeve (20). A threaded hole is provided on the outer side of the annular groove (19).

4. The screw hybrid structure of the cable extruder according to claim 3, characterized in that: One end of the limiting sleeve (20) abuts against one end of the third conveying auger (10), and four threaded holes and four second bolts (22) are provided.

5. The screw hybrid structure of the cable extruder according to claim 1, characterized in that: A connection mechanism is provided between one end of the output shaft of the first motor (3) and one end of the fixed shaft (6). The connection mechanism includes a toothed groove (16), a plug (17) and a first bolt (18). The toothed groove (16) is provided on the inner side of the output shaft of the first motor (3). The plug (17) is integrally formed on one end of the fixed shaft (6). The plug (17) is integrally formed with teeth on the outer side. The first bolt (18) is inserted through the outer side of the output shaft of the first motor (3).

6. The screw hybrid structure of the cable extruder according to claim 1, characterized in that: The heating mechanism includes a heating wire (5), and a cavity is provided on the inner side of the mixing tube (4), with the heating wire (5) disposed on the inner side of the cavity.

7. The screw hybrid structure of the cable extruder according to claim 1, characterized in that: A feeding mechanism is provided on the outside of the mixing pipe (4). The feeding mechanism includes a feeding bin (11), a feeding port (12), a second motor (13), a discharge auger (14), and a distribution plate (15). The outside of the mixing pipe (4) is fixedly connected to the feeding bin (11). The top of the feeding bin (11) is fixedly connected to the feeding port (12). The top of the feeding bin (11) is fixedly connected to the second motor (13). One end of the output shaft of the second motor (13) is fixedly connected to the discharge auger (14). The outside of the discharge auger (14) is fixedly connected to the distribution plate (15).

Images