A melt mold for composite differentiated fibers and its application method

Abstract

This invention relates to the field of melting mold technology, and more particularly to a melting mold for composite differentiated fibers and its method of use. The mold includes a fixing bolt and an upper mold assembly. The upper mold assembly is spirally fitted to the outside of the fixing bolt. A lower mold assembly is installed at the lower end of the upper mold assembly. A core assembly is fixedly connected to the inside of the lower mold assembly. A temperature control assembly is rotatably connected to the inside of the core assembly. The upper mold assembly includes an upper mold cylinder with a material groove on its inner side. A slot is formed on the inner side of the lower end of the upper mold cylinder, and a first sealing ring is fixedly connected to the inner side of the slot. A limiting hole and a polygonal slide are formed on the inner side of the lower end of the upper mold cylinder. In this invention, the device has a detachable structure, allowing adjustment of the lower mold assembly model according to the specifications of fiber production. The replacement process is simple and convenient, adapting to market demands.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of melt dies, specifically a melt die for composite differential fibers and its use method. BACKGROUND

[0002] The melt die for composite differential fibers is an industrial device specifically designed to heat and melt polymeric materials and extrude them through specially designed spinnerets to form fibers with different cross-sections and properties. The key lies in controlling the shape and size of the spinneret to produce differential fibers with specific performance and purpose.

[0003] Composite differential fibers can have different cross-sectional shapes, such as circular, rectangular, polygonal, or other irregular shapes. These shapes help improve certain physical properties of the fibers, such as increasing inter-fiber friction or improving their orientation in composite materials.

[0004] Existing melt dies generally use a monolithic design, which brings some inconvenience when producing multiple specifications of fibers. Specifically, when different sizes or shapes of fibers need to be produced, the entire die must be removed from the production equipment and replaced with the corresponding die. This process not only takes time but also may affect production efficiency and continuity. Therefore, the existing die replacement process is relatively cumbersome, lacks flexibility, and limits the adaptability of melt dies in diversified production needs. Therefore, a melt die for composite differential fibers and its use method are proposed to address the above problems. SUMMARY

[0005] The present application aims to provide a melt die for composite differential fibers and its use method to solve the problem of existing die replacement process being relatively cumbersome, lacking flexibility, and limiting the adaptability of melt dies in diversified production needs.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] The application discloses a melt mold for composite differential fibers, which comprises a fixing bolt and an upper mold assembly, the outer side of the fixing bolt is spirally attached with the upper mold assembly, a lower mold assembly is installed at the lower end of the upper mold assembly, a mold core assembly is fixedly connected to the inner side of the lower mold assembly, a constant temperature assembly is rotatably connected to the inner side of the mold core assembly, the upper mold assembly comprises an upper mold cylinder, a material groove is formed in the inner side of the upper mold cylinder, a bayonet is formed in the inner side of the lower end of the upper mold cylinder, a first sealing ring is fixedly connected to the inner side of the bayonet of the upper mold cylinder, a limiting hole is formed in the inner side of the lower end of the upper mold cylinder, a multi-shaped slide is formed in the inner side of the lower end of the upper mold cylinder, an electromagnet is fixedly connected to the inner side of the multi-shaped slide of the upper mold cylinder, a push spring is fixedly connected to the inner side of the multi-shaped slide of the upper mold cylinder, a limiting clamping column is fixedly connected to one end of the push spring, the lower mold assembly comprises a lower mold cylinder, a mixing groove is formed in the inner side of the lower mold cylinder, a fixing lug is fixedly connected to the outer side of the lower end of the lower mold cylinder, an installation slide roller is fixedly connected to the top end of the fixing lug, a cylindrical bayonet is formed in the inner side of the installation slide roller, the mold core assembly comprises a core plate, a discharging core hole is formed in the inner side of the core plate, a stable cone is fixedly connected to the top end of the discharging core hole, a second sealing ring is fixedly connected to the inner side of the stable cone, a limiting ring groove is formed in the inner side of the stable cone, a partition cylinder is fixedly connected to the bottom end of the core plate, and a stable built-in plate is fixedly connected to the inner side of the partition cylinder.

[0008] As a further optimization of the application, the constant temperature assembly comprises a heat insulation plate, the bottom end of the heat insulation plate is fixedly connected with a servo motor, the main shaft of the servo motor is fixedly connected with a gear, the outer side of the gear is engaged with the outer side of a gear ring, the inner side of the gear ring is fixedly connected with a vertical column, and the outer side of the vertical column is fixedly connected with a horizontal column.

[0009] As a further optimization of the application, the top end of the heat insulation plate is fixedly connected with the bottom end of the core plate, the main shaft of the servo motor rotates on the inner side of the stable built-in plate, the vertical column is in the shape of a hollow cylinder, the horizontal column is in the shape of a hollow cylinder, the lower end of the vertical column is formed with a through hole, the two ends of the horizontal column are formed with through holes, and the vertical column and the horizontal column are communicated.

[0010] As a further optimization of the application, the inner side of the horizontal column is fixedly connected with a spring telescopic rod, one side of the spring telescopic rod is fixedly connected with a rubber plug, and the inner side of the horizontal column is fixedly connected with a heating wire.

[0011] As a further optimization of the application, the outer side of the rubber plug is attached with the inner side of the horizontal column, the inner side of the horizontal column is fixedly connected with a support plate, and the spring telescopic rod is arranged in the interior of the horizontal column.

[0012] As a further optimization of the present application, wherein: the shape of the upper mold cylinder is a two-end cylinder, the inside of the upper end of the upper mold cylinder is provided with a spiral groove, the material groove penetrates the inside of the upper mold cylinder, the opening shape of the bayonet is a circular ring body, and the bayonet penetrates the lower end of the upper mold cylinder.

[0013] As a further optimization of the present application, wherein: the shape of the upper mold cylinder is a two-end cylinder, the inside of the upper end of the upper mold cylinder is provided with a spiral groove, the material groove penetrates the inside of the upper mold cylinder, the opening shape of the bayonet is a circular ring body, and the bayonet penetrates the lower end of the upper mold cylinder.

[0014] As a further optimization of the present application, wherein: the shape of the upper mold cylinder is a two-end cylinder, the inside of the upper end of the upper mold cylinder is provided with a spiral groove, the material groove penetrates the inside of the upper mold cylinder, the opening shape of the bayonet is a circular ring body, and the bayonet penetrates the lower end of the upper mold cylinder.

[0015] As a further optimization of the present application, wherein: the shape of the upper mold cylinder is a two-end cylinder, the inside of the upper end of the upper mold cylinder is provided with a spiral groove, the material groove penetrates the inside of the upper mold cylinder, the opening shape of the bayonet is a circular ring body, and the bayonet penetrates the lower end of the upper mold cylinder.

[0016] A method for using a composite differential fiber melting mold,

[0017] S1: when the lower mold assembly is replaced, the upper mold cylinder is fixed with the external device through the fixing bolt, the electromagnet generates magnetic attraction after being powered on, one end of the limiting clamping column is a magnet, the limiting clamping column moves under the action of the magnetic attraction of the electromagnet, the limiting clamping column is slidingly connected to the inside of the multi-shaped slide way opened in the upper mold cylinder, the limiting clamping column is pressed when moving, the thrust spring moves to the inside of the limiting hole under the elastic force of the thrust spring, at this time, the limiting clamping column is stored in the multi-shaped slide way opened in the upper mold cylinder, the limiting clamping column is separated from the inside of the cylindrical clamping opening opened in the installation slide roller, at this time, the lower mold assembly and the upper mold assembly can be moved in the opposite direction, the installation slide roller slides out of the inside of the limiting hole opened in the upper mold cylinder, at the same time, the upper end of the lower mold cylinder slides out of the clamping opening opened in the upper mold cylinder, the first sealing ring is away from the lower mold cylinder, the first sealing ring plays a role of sealing between the lower mold cylinder and the lower mold cylinder, at this time, the lower mold assembly and the upper mold assembly are separated, then another type of lower mold assembly is connected with the upper mold assembly, the other lower mold cylinder is slid to the inside of the clamping opening, at the same time, the installation slide roller is slid to the inside of the limiting hole, when the top end of the lower mold cylinder is attached to the top end of the clamping opening opened in the upper mold cylinder, the electromagnet is powered off at this time, the limiting clamping column slides to the inside of the cylindrical clamping opening opened in the installation slide roller, and the replacement of the lower mold assembly is completed;

[0018] S2: when the fiber raw material in the lower mold cylinder is kept at a constant temperature, the limiting clamping column is started, the limiting clamping column generates heat, the heating wire heats the cross column, the main shaft of the servo motor rotates, the servo motor drives the gear to rotate, the main shaft of the servo motor rotates in the inside of the stable built-in plate, which can improve the stability of the gear rotation, the gear drives the gear ring to rotate, the gear ring drives the vertical column to rotate, the vertical column is rotatably connected to the inside of the stable cone and the core plate through the limiting rotating ring, and is rotatably connected to the inside of the limiting ring groove opened in the stable cone, the vertical column drives the fixed cross column on the outside to rotate;

[0019] S3: without disassembly, the inside of the lower mold cylinder and the core plate is cleaned, the water pipe is installed on the inside of the lower part of the vertical column, the cleaning agent is supplied to the inside of the vertical column, the cleaning agent enters the inside of the cross column from the inside of the vertical column, under the action of the water pressure of the cleaning agent, the rubber plug moves, the rubber plug drives the spring telescopic rod to expand, and the cleaning agent is sprayed from the cross column. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0021] Figure 2 It is a schematic diagram of the fixing bolt structure of the present application;

[0022] Figure 3 It is a schematic diagram of the upper mold assembly structure of the present application;

[0023] Figure 4 Structure diagram of the mold barrel of the present application;

[0024] Figure 5 Structure diagram of the mold barrel of the present application; Figure 4 Structure diagram of the mold barrel of the present application;

[0025] Figure 6 Structure diagram of the mold barrel of the present application;

[0026] Figure 7 Structure diagram of the mold barrel of the present application;

[0027] Figure 8 Structure diagram of the mold barrel of the present application; Figure 7 Structure diagram of the mold barrel of the present application.

[0028] 1, fixing bolt;

[0029] 2, upper mold assembly; 21, upper mold barrel; 22, trough; 23, bayonet; 24, first sealing ring; 25, limiting hole; 26, multi-shaped slide; 27, electromagnet; 28, thrust spring; 29, limiting clamping column;

[0030] 3, lower mold assembly; 31, lower mold barrel; 32, mixing trough; 33, cylindrical bayonet; 34, fixing ear seat; 35, installation slide roller;

[0031] 4, mold core assembly; 41, core plate; 42, discharging core port; 43, stabilizing cone; 44, second sealing ring; 45, limiting ring groove; 46, spacer barrel; 47, built-in stabilizing plate;

[0032] 5, constant temperature assembly; 51, heat insulation plate; 52, servo motor; 53, gear; 54, gear ring; 55, vertical column; 56, horizontal column; 57, spring telescopic rod; 58, rubber plug; 59, heating wire. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0034] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0035] Referring to Figures 1-8 The application provides a technical solution:

[0036] A composite differential fiber melt mold, comprising a fixed bolt 1 and an upper mold assembly 2, the outer side of the fixed bolt 1 is spirally attached with the upper mold assembly 2, the lower end of the upper mold assembly 2 is installed with a lower mold assembly 3, the inner side of the lower mold assembly 3 is fixedly connected with a mold core assembly 4, the inner side of the mold core assembly 4 is rotatably connected with a constant temperature assembly 5, the upper mold assembly 2 comprises an upper mold cylinder 21, the inner side of the upper mold cylinder 21 is provided with a material groove 22, the inner side of the lower end of the upper mold cylinder 21 is provided with a bayonet 23, the inner side of the bayonet 23 of the upper mold cylinder 21 is fixedly connected with a first sealing ring 24, the inner side of the lower end of the upper mold cylinder 21 is provided with a limiting hole 25, the inner side of the lower end of the upper mold cylinder 21 is provided with a multi-shaped slide 26, the inner side of the multi-shaped slide 26 of the upper mold cylinder 21 is fixedly connected with an electromagnet 27, the inner side of the multi-shaped slide 26 of the upper mold cylinder 21 is fixedly connected with a thrust spring 28, one end of the thrust spring 28 is fixedly connected with a limiting clamping column 29, the lower mold assembly 3 comprises a lower mold cylinder 31, the inner side of the lower mold cylinder 31 is provided with a mixing groove 32, the outer side of the lower end of the lower mold cylinder 31 is fixedly connected with a fixed lug 34, the top end of the fixed lug 34 is fixedly connected with a mounting slide roller 35, the inner side of the cylindrical bayonet 33 of the mounting slide roller 35 is provided, the mold core assembly 4 comprises a core plate 41, the inner side of the core plate 41 is provided with a discharging core 42, the top end of the discharging core 42 is fixedly connected with a stable cone 43, the inner side of the stable cone 43 is fixedly connected with a second sealing ring 44, the inner side of the stable cone 43 is provided with a limiting ring groove 45, the bottom end of the core plate 41 is fixedly connected with a partition cylinder 46, the inner side of the partition cylinder 46 is fixedly connected with a stable built-in plate 47.

[0037] As a further implementation of this solution, the constant temperature component 5 includes a heat insulation plate 51. A servo motor 52 is fixedly connected to the bottom end of the heat insulation plate 51. A gear 53 is fixedly connected to the end of the main shaft of the servo motor 52. The outer side of the gear 53 meshes with the outer side of the gear ring 54. A vertical column 55 is fixedly connected to the inner side of the gear ring 54. A horizontal column 56 is fixedly connected to the outer side of the vertical column 55. The top end of the heat insulation plate 51 is fixedly connected to the bottom end of the core plate 41. The main shaft of the servo motor 52 rotates inside the stable inner plate 47. The vertical column 55 is a hollow cylinder, and the horizontal column 56 is a hollow cylinder. The bottom end of the vertical column 55 is through-hole, and both ends of the horizontal column 56 are through-hole. The vertical column 55 and the horizontal column 56 are... The system is connected in a 6-way configuration. A spring telescopic rod 57 is fixedly connected to the inner side of the horizontal column 56. A rubber plug 58 is fixedly connected to one side of the spring telescopic rod 57. A heating wire 59 is fixedly connected to the inner side of the horizontal column 56. The outer side of the rubber plug 58 fits against the inner side of the horizontal column 56. A support plate is fixed to the inner side of the horizontal column 56. The spring telescopic rod 57 is located inside the horizontal column 56. This meshing design not only improves the stability of rotation but also ensures the coordination and consistency between various components, thereby improving the overall system operating efficiency. This design allows the spring telescopic rod 57 and the rubber plug 58 to move flexibly inside the horizontal column 56, thereby achieving sealing and cleaning of the inside of the horizontal column 56 and improving the efficiency and effectiveness of cleaning.

[0038] As a further implementation of this solution, the upper mold cylinder 21 is cylindrical at both ends. A spiral groove is opened on the inner side of the upper end of the upper mold cylinder 21. The material groove 22 penetrates the interior of the upper mold cylinder 21. The bayonet 23 is annular and penetrates the lower end of the upper mold cylinder 21. The limiting pin 29 is cylindrical at both ends. A limiting slider is installed on the outer side of one end of the limiting pin 29. The limiting pin 29 is slidably connected to the inner side of the polyhedral slide 26 opened in the upper mold cylinder 21. One end of the limiting pin 29 slides inside the cylindrical bayonet 33 opened in the mounting roller 35. The outer side of the mounting roller 35 slides inside the limiting hole 25 opened in the upper mold cylinder 21. The number of mounting rollers 35 corresponds one-to-one with the number of limiting holes 25. The lower mold cylinder 31 is cylindrical in shape. The outer side of the upper end of the lower mold cylinder 31 slides inside the slot 23 opened in the upper mold cylinder 21. The inner side of the upper end of the lower mold cylinder 31 fits against the outer side of the first sealing ring 24. The lower mold cylinder 31 is hollow and the limiting hole 25 is cylindrical. This structural design allows the upper mold cylinder 21 to be easily connected and fixed with other components. At the same time, the spiral groove design helps to improve the stability of the connection. This design allows the limiting pin 29 and the mounting roller 35 to move flexibly inside the upper mold cylinder 21. At the same time, the limiting slider ensures the accuracy and stability of the movement, so that the lower mold cylinder 31 can be easily connected with the upper mold cylinder 21 and the first sealing ring 24, while maintaining the internal sealing and ensuring a stable supply of raw materials.

[0039] As a further implementation of this solution, the outer side of the core plate 41 is fixedly connected to the inner side of the lower mold cylinder 31. The inner sides of both the core plate 41 and the stabilizing cone 43 are hollow. The opening shape of the limiting ring groove 45 is a ring. The outer side of the vertical column 55 is rotatably connected to the inner side of the limiting ring groove 45. The inner side of the second sealing ring 44 is in contact with the outer side of the vertical column 55. The shape of the partition cylinder 46 is a hollow cylinder. This design allows the core plate 41, the stabilizing cone 43 and the vertical column 55 to form a stable heating and cleaning system, while ensuring the sealing and stability of the system.

[0040] Workflow: When replacing the lower mold assembly 3, the upper mold cylinder 21 is fixed to the external device by the fixing bolts 1. Simultaneously, two electromagnets 27 are activated. After being energized, the electromagnets 27 generate magnetic attraction. One end of the limiting pin 29 is a magnet. Under the attraction of the electromagnets 27, the limiting pin 29 moves. The limiting pin 29 is slidably connected to the inner side of the polyhedral slide 26 opened in the upper mold cylinder 21, thus limiting the movement of the limiting pin 29. When moving, the thrust spring 28 is compressed. Under the elastic force of the thrust spring 28, the thrust spring 28 continues to move into the limiting hole 25. At this time, the limiting pin 29 is housed inside the polyhedral slide 26 opened in the upper mold cylinder 21, and the limiting pin 29 disengages from the cylindrical slot 33 opened in the mounting roller 35. At this time, the lower mold assembly 3 can be moved in the opposite direction to the upper mold assembly 2, and the mounting roller 35 slides out of the limiting hole 25 opened in the upper mold cylinder 21. At the same time, the lower mold cylinder... The upper end of 31 slides out of the slot 23 opened in the upper mold cylinder 21, and the first sealing ring 24 moves away from the lower mold cylinder 31. The first sealing ring 24 plays the role of sealing between the lower mold cylinder 31 and the upper mold cylinder 2. At this time, the lower mold assembly 3 and the upper mold assembly 2 can be separated. Then, another type of lower mold assembly 3 is connected to the upper mold assembly 2. The other lower mold cylinder 31 is slid into the slot 23. At the same time, the installation roller 35 is slid into the limiting hole 25. After the top of the lower mold cylinder 31 is in contact with the top of the slot 23 opened in the upper mold cylinder 21, the electromagnet 27 is de-energized. Under the elastic force of the thrust spring 28, the limiting pin 29 slides into the cylindrical slot 33 opened in the installation roller 35, completing the replacement of the lower mold assembly 3. The device is designed with a detachable structure, which makes it convenient to adjust the model of the lower mold assembly 3 according to the specifications of fiber production. The replacement process is simple and convenient, with high flexibility, and adapts to market demand.

[0041] To maintain a constant temperature for the fiber material inside the lower mold cylinder 31, the limiting pin 29 is activated. The limiting pin 29 generates heat, which heats the horizontal column 56 via the heating wire 59. This activates the servo motor 52, causing its spindle to rotate. The heat insulation plate 51 supports the servo motor 52 and also provides thermal insulation between the servo motor 52 and the core plate 41. The servo motor 52 drives the gear 53 to rotate. The rotation of the servo motor 52's spindle within the stable inner plate 47 improves the stability of the gear 53's rotation. Gear 53 drives gear ring 54 to rotate, gear ring 54 drives vertical column 55 to rotate, vertical column 55 is rotatably connected to the inner side of stable cone 43 and core plate 41 through limiting rotating ring, and is rotatably connected to the inner side of limiting ring groove 45 opened in stable cone 43, which plays the role of limiting vertical column 55. Vertical column 55 drives the outer fixed horizontal column 56 to rotate. When the horizontal column 56 rotates, it can heat the raw material inside the lower mold cylinder 31, ensuring that the temperature inside the lower mold cylinder 31 is within a certain range, thereby improving the fiber quality at the production site.

[0042] To clean the interior of the lower mold cylinder 31 and core plate 41 without disassembly, a water pipe is installed on the inner side of the lower part of the vertical column 55 to supply cleaning agent to the interior of the vertical column 55. The cleaning agent enters the interior of the horizontal column 56 from the interior of the vertical column 55. Under the action of the water pressure of the cleaning agent, the rubber plug 58 is pushed to move. The rubber plug 58 drives the spring telescopic rod 57 to extend. Under the action of the spring telescopic rod 57, the rubber plug 58 covers the interior of the horizontal column 56, thus sealing the interior of the horizontal column 56 and preventing raw materials from entering the interior of the horizontal column 56. At this time, the cleaning agent is sprayed out from the horizontal column 56, thereby cleaning the interior of the lower mold cylinder 31 and core plate 41. The cleaning agent flows out from the discharge core port 42, thus cleaning the interior of the lower mold cylinder 31 and upper mold cylinder 21.

[0043] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A melt die for composite differential fibres comprising a fixing bolt (1) and an upper die assembly (2), characterised in that: The fixed bolt (1) is spirally attached with an upper mold assembly (2), the lower end of the upper mold assembly (2) is installed with a lower mold assembly (3), the inner side of the lower mold assembly (3) is fixedly connected with a mold core assembly (4), and the inner side of the mold core assembly (4) is rotatably connected with a constant temperature assembly (5). The upper mold assembly (2) includes an upper mold cylinder (21), a material groove (22) is formed in the inner side of the upper mold cylinder (21), a bayonet (23) is formed in the inner side of the lower end of the upper mold cylinder (21), a first sealing ring (24) is fixedly connected to the inner side of the bayonet (23) formed in the upper mold cylinder (21), a limiting hole (25) is formed in the inner side of the lower end of the upper mold cylinder (21), a multi-shaped slide (26) is formed in the inner side of the lower end of the upper mold cylinder (21), an electromagnet (27) is fixedly connected to the inner side of the multi-shaped slide (26) formed in the upper mold cylinder (21), a thrust spring (28) is fixedly connected to the inner side of the multi-shaped slide (26) formed in the upper mold cylinder (21), a limiting clamping column (29) is fixedly connected to one end of the thrust spring (28), the lower mold assembly (3) includes a lower mold cylinder (31), a mixing groove (32) is formed in the inner side of the lower mold cylinder (31), a fixed lug (34) is fixedly connected to the outer side of the lower end of the lower mold cylinder (31), an installation slide roller (35) is fixedly connected to the top end of the fixed lug (34), a cylindrical bayonet (33) is formed in the inner side of the installation slide roller (35), the mold core assembly (4) includes a core plate (41), a discharging core (42) is formed in the inner side of the core plate (41), a stable cone (43) is fixedly connected to the center top end of the core plate (41), a second sealing ring (44) is fixedly connected to the inner side of the stable cone (43), a limiting ring groove (45) is formed in the inner side of the stable cone (43), a partition cylinder (46) is fixedly connected to the bottom end of the core plate (41), a stable built-in plate (47) is fixedly connected to the inner side of the partition cylinder (46), the constant temperature assembly (5) includes a heat insulation plate (51), a servo motor (52) is fixedly connected to the bottom end of the heat insulation plate (51), a gear (53) is fixedly connected to the end of the main shaft of the servo motor (52), the outer side of the gear (53) is engaged with the outer side of a gear ring (54), the inner side of the gear ring (54) is fixedly connected with a vertical column (55), the outer side of the vertical column (55) is fixedly connected with a horizontal column (56), the top end of the heat insulation plate (51) is fixedly connected with the bottom end of the core plate (41), the main shaft of the servo motor (52) rotates in the inner side of the stable built-in plate (47), the shape of the vertical column (55) is a hollow cylinder, the shape of the horizontal column (56) is a hollow cylinder, the lower end of the vertical column (55) is formed in a penetrating manner, the two ends of the horizontal column (56) are formed in a penetrating manner, the vertical column (55) and the horizontal column (56) are communicated, a spring telescopic rod (57) is fixedly connected to the inner side of the horizontal column (56), a rubber plug (58) is fixedly connected to one side of the spring telescopic rod (57), a heating wire (59) is fixedly connected to the inner side of the horizontal column (56), the shape of the upper mold cylinder (21) is a cylindrical body with two ends, a spiral groove is formed in the inner side of the upper end of the upper mold cylinder (21), the material groove (22) penetrates the inside of the upper mold cylinder (21), the shape of the bayonet (23) formed is a circular ring body, the bayonet (23) penetrates the lower end of the upper mold cylinder (21),The shape of the limiting clamping column (29) is a cylinder at both ends, the right end of the limiting clamping column (29) is a magnet, which is slidingly connected to the inside of the multi-shaped slide (26) opened in the upper mold cylinder (21), the left end of the limiting clamping column (29) is a limiting sliding block, which is slidingly connected to the inside of the cylindrical socket (33) opened in the installation sliding roller (35), the outside of the installation sliding roller (35) slides in the limiting hole (25) opened in the upper mold cylinder (21), the number of the installation sliding roller (35) corresponds to the number of the limiting hole (25), the opening shape of the limiting hole (25) is a cylinder, the upper end of the lower mold cylinder (31) slides in the socket (23) opened in the upper mold cylinder (21), the upper end of the lower mold cylinder (31) is attached to the outside of the first sealing ring (24), the shape of the lower mold cylinder (31) is a hollow cylinder, and the shape of the limiting hole (25) is a cylinder.

2. A melt die for composite differential fiber as defined in claim 1, wherein: The rubber plug (58) is attached with the inner side of the horizontal column (56), the inner side of the horizontal column (56) is fixedly provided with a support plate, and the spring telescopic rod (57) is located in the interior of the horizontal column (56).

3. A melt die for composite differential fibres according to claim 2, characterised in that: The outer side of the core plate (41) is fixedly connected with the inner side of the lower mold cylinder (31), the inner sides of the core plate (41) and the stable cone (43) are hollow, the opening shape of the limiting ring groove (45) is a circular ring body, the outer side of the vertical column (55) is rotatably connected to the inner side of the limiting ring groove (45), the inner side of the second sealing ring (44) is attached with the outer side of the vertical column (55), and the shape of the spacer cylinder (46) is a hollow cylindrical body.

4. The use method of the melting mold of the composite differential fiber according to claim 3, characterized in that: S1: when the lower mold assembly (3) is replaced, the upper mold cylinder (21) is fixed with the external device through the fixed bolt (1), the electromagnet (27) generates magnetic attraction after being electrified, the right end of the limiting clamping column (29) is a magnet, the limiting clamping column (29) moves under the action of the magnetic attraction of the electromagnet (27), the limiting clamping column (29) is slidably connected to the inner side of the multi-shaped slide (26) of the upper mold cylinder (21), the limiting clamping column (29) is pressed when moving, the pushing spring (28) moves to the outer side of the multi-shaped slide (26) under the action of the elastic force of the pushing spring (28), at this time, the limiting clamping column (29) is stored in the inner side of the multi-shaped slide (26) of the upper mold cylinder (21), the limiting clamping column (29) is separated from the inside of the cylindrical clamping opening (33) of the installation slide roller (35), at this time, the lower mold assembly (3) and the upper mold assembly (2) are moved in opposite directions, the installation slide roller (35) slides out of the inner side of the limiting hole (25) of the upper mold cylinder (21), at the same time, the upper end of the lower mold cylinder (31) slides out of the inner side of the clamping opening (23) of the upper mold cylinder (21), the first sealing ring (24) is away from the lower mold cylinder (31), the first sealing ring (24) plays a role in sealing between the upper mold cylinder (21) and the lower mold cylinder (31), at this time, the lower mold assembly (3) and the upper mold assembly (2) are separated, and then another type of lower mold assembly (3) is connected with the upper mold assembly (2), the other lower mold cylinder (31) is slid to the inside of the clamping opening (23), at the same time, the installation slide roller (35) is slid to the inside of the limiting hole (25), when the top end of the lower mold cylinder (31) is attached with the top end of the clamping opening (23) of the upper mold cylinder (21), at this time, the electromagnet (27) is de-energized, at this time, the limiting clamping column (29) slides to the inside of the cylindrical clamping opening (33) of the installation slide roller (35) under the action of the elastic force of the pushing spring (28), and the replacement of the lower mold assembly (3) is completed. S2: When the effect of keeping the temperature of the fiber raw materials in the lower mold cylinder (31) constant is achieved, the heating wire (59) is started, the heating wire (59) emits heat, the heating wire (59) heats the horizontal column (56), the main shaft of the servo motor (52) rotates, the servo motor (52) drives the gear (53) to rotate, the main shaft of the servo motor (52) rotates in the inside of the stable built-in plate (47), improve the stability of the gear (53) when rotating, the gear (53) drives the gear ring (54) to rotate, the gear ring (54) drives the vertical column (55) to rotate, the vertical column (55) is rotatably connected to the inside of the stable cone (43) and the core plate (41) through the limiting rotating ring, and is also rotatably connected to the inside of the limiting ring groove (45) opened in the stable cone (43), the vertical column (55) drives the horizontally fixed horizontal column (56) to rotate; S3: Without disassembling, realize cleaning inside the lower mold cylinder (31) and the core plate (41), install the water pipe on the inside of the lower part of the vertical column (55), supply the cleaning agent to the inside of the vertical column (55), the cleaning agent enters the inside of the horizontal column (56) from the inside of the vertical column (55), under the action of the water pressure of the cleaning agent, push the rubber plug (58) to move, the rubber plug (58) drives the spring telescopic rod (57) to stretch, the cleaning agent is sprayed from the horizontal column (56).

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