One-step formed fiber silica gel hose extrusion structure

Abstract

The utility model discloses a one -step forming's fibre silica gel hose extrusion structure, aims at providing one -step forming's fibre silica gel hose extrusion structure of one -step forming, material uniform, improve the quality of one -step forming of rubber tube extrusion. It includes core rod, and the core rod from one side to the other side has the inner layer extrusion cover, reinforcing layer extrusion cover and outer layer extrusion cover in proper order, and the inner layer extrusion cover is provided with the liquid inlet channel between the inner die holder and the outer die holder, and the liquid inlet channel is provided with the liquid inlet pipe, and the liquid inlet pipe is connected with the outer die holder, and the support ring is embedded with the channel mouth of liquid inlet channel, and the installation subassembly, and the limiting subassembly, and the cooling assembly. The utility model has the beneficial effects that: extrusion structure can one -step forming extrusion fibre silica gel hose, and the accessory of die holder is convenient to assemble and disassemble maintenance, and can be positioned and assembled fast and realizes high efficiency and high stability, and guarantees fibre silica gel hose coating uniformity and high forming quality, and improves the assembly efficiency and stability between accessories.

Description

Technical Field

[0001] This utility model relates to the field of hose extrusion structure technology, and in particular to a one-piece molded fiber silicone hose extrusion structure. Background Technology

[0002] Fiber silicone hose is a composite structure hose with two (inner rubber layer + fiber braided layer) or three layers, including an inner layer (food-grade or industrial-grade silicone), a reinforcing layer (high-strength fiber braided layer) and an outer layer (wear-resistant silicone layer). During production, the hose is extruded into a tubular shape through the extrusion die structure of an extruder.

[0003] Chinese Patent Authorization Announcement No.: CN 211165212 U, Authorization Announcement Date: September 26, 2023. This utility model relates to a multi-layer co-extrusion composite die head device for the production of fiber-reinforced composite random copolymer polypropylene pipes. It includes a composite die head module I, a composite die head module II, a composite die head module III, an outer tube preform melt channel, an outer tube preform melt cavity, a middle tube preform melt channel, a middle tube preform melt cavity, an inner tube preform melt cavity, a die, a mandrel, and a flow divider cone. The tail end of the composite die head module I is provided with an inner tube preform melt cavity. The upper side of the head end of the inner tube preform melt cavity is provided with a flow divider cone. The front end of the flow divider cone is provided with a mandrel. The composite die head module II is installed in cooperation with the composite die head module I. The upper side of the composite die head module II is provided with a middle tube preform melt channel. The composite die head module III is installed in cooperation with the composite die head module II. The lower side of the composite die head module III is provided with an outer tube preform melt channel. The shortcomings of this technical solution are: 1. When multiple layers of extrusion are required, the materials of different layers of the hose are easily mixed, which leads to a decrease in the quality of the fiber silicone hose; 2. The positioning and stability of the extruded structure components are insufficient during assembly, resulting in a decrease in the quality of the middle and outer layers.

[0004] In summary, extrusion structures have drawbacks such as easy material mixing during molding and reduced hose production quality. Utility Model Content

[0005] This invention aims to overcome the shortcomings of existing extrusion structures, such as easy material mixing during molding and reduced hose production quality, by providing a one-time molding fiber silicone hose extrusion structure that can achieve uniform material distribution and improve hose extrusion quality.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A one-piece molded fiber silicone hose extrusion structure, comprising: The core rod is fitted with an inner extrusion sleeve, a reinforcing layer extrusion sleeve, and an outer extrusion sleeve in sequence from one side to the other. The liquid inlet die holder, the reinforcing layer extrusion sleeve and the outer layer extrusion sleeve are all connected to the liquid inlet die holder. The liquid inlet die holder includes an inner die holder and an outer die holder. The gap between the inner die holder and the outer die holder is set as a liquid inlet channel. The liquid inlet pipe is connected to the outer mold base and is also connected to the liquid inlet channel. Support ring, which is fitted into the inlet of the liquid inlet channel; The mounting components are connected to both the reinforcing layer extrusion sleeve and the outer layer extrusion sleeve. The outer mold base is detachably connected to the mounting components. The limiting component allows the inner mold base to be detachably connected to the support ring. The cooling assembly, inner extrusion sleeve, reinforcing layer extrusion sleeve and outer extrusion sleeve are all connected to the cooling assembly.

[0007] The inner extrusion sleeve, reinforcing layer extrusion sleeve, and outer extrusion sleeve, which are sequentially sleeved on the outside of the core rod, have progressively larger inner diameters. The space between the inner extrusion sleeve and the core rod is used to pass through the inner layer solution of the core fiber silicone hose (such as food-grade or industrial-grade silicone). The space between the reinforcing layer extrusion sleeve and the core rod is used to pass through the reinforcing layer solution (such as polyester fiber, aramid fiber, or glass fiber) coated with the inner layer solution. The space between the outer extrusion sleeve and the core rod is used to pass through the wear-resistant silicone layer coated with the reinforcing layer solution, so that the fiber silicone hose is formed and extruded in one step at the extrusion structure during production. The liquid inlet die holders are distributed on the reinforcing layer extrusion sleeve and the outer layer extrusion sleeve. The inner and outer die holders within the liquid inlet die holders form a space through a gapped fit. Solution is delivered through the liquid inlet channel to enhance the coating of the inner and reinforcing layers. The liquid inlet pipe is used to feed material into the liquid inlet channel through the outer die holder. A support ring is placed between the inner and outer die holders to quickly support the liquid inlet die holder and keep the inlet channel chamber open. The outer die holder can be quickly positioned and connected via an installation component, allowing it to be quickly fixed after insertion. The inner die holder is connected to the support ring via a limiting component, ensuring quick fixation after insertion. This ensures efficient and stable assembly of the liquid inlet die holders, facilitating assembly and maintenance, improving the stability of the extrusion structure, and thus improving the extrusion quality of the hose. A cooling component cools the hose before coating, preventing mixing that could lead to uneven composite layers and reduce the molding quality of the fiber silicone hose. The system achieves the following: the extrusion structure can form fiber silicone hoses in one step; the die holder accessories are easy to assemble, disassemble, and maintain; quick positioning and assembly ensure high efficiency and stability; and the fiber silicone hose achieves uniform coating and high molding quality.

[0008] Preferably, the support ring has a connecting screw hole, and the limiting component includes a mounting screw, which is inserted into the inner mold base and threadedly connected to the connecting screw hole. Several mounting screws are provided, and the support ring is connected to the mounting screw through the connecting screw hole. This achieves the effect of easy disassembly and assembly of the inner mold base and stable assembly.

[0009] Preferably, the limiting assembly includes a positioning block one and a positioning block two. Positioning block one is connected to the support ring, and positioning block two is connected to the inner mold base. The position of positioning block one corresponds to the position of connecting screw hole one, and the position of positioning block two corresponds to the position of mounting screw one. Positioning block one, by connecting to the surface of the support ring to correspond to the position of connecting screw hole one, quickly indicates the position of connecting screw hole one on the outside. Positioning block two, by connecting to the surface of the inner mold base to correspond to the position of mounting screw one, can quickly position the assembly position of the support ring and the inner mold base, and quickly align the position of connecting screw hole one with the position of mounting screw one, allowing mounting screw one to be directly screwed into connecting screw hole one without repeatedly turning the support ring. This achieves the effect of improving the assembly efficiency between components.

[0010] Preferably, the mounting assembly includes a mounting ring, with the outer mold base detachably connected to the mounting ring. Both the reinforcing layer extrusion sleeve and the outer layer extrusion sleeve are connected to positioning rings. The mounting ring has a positioning groove that matches the positioning ring, and the positioning ring engages with the mounting ring. Positioning rings and mounting rings are fitted onto both the reinforcing layer extrusion sleeve and the outer layer extrusion sleeve. The mounting ring engages with the positioning ring through the positioning groove, allowing for rapid positioning of the mounting ring and thus fixing the outer mold base in place. This further improves the assembly efficiency of the liquid inlet mold base.

[0011] Preferably, the mounting assembly includes a second mounting screw, which is inserted into a mounting ring. The outer mold base has a second connecting screw hole, and the second mounting screw is threaded into the second connecting screw hole. The second mounting screw is inserted into the mounting ring, and the second mounting screw has several prongs. The mounting ring and the outer mold base are quickly fixed by screwing the second mounting screw into the second connecting screw hole. This improves the ease of assembly and subsequent disassembly and maintenance of the mounting ring and the outer mold base.

[0012] Preferably, the outer mold base has mounting holes, and the liquid inlet pipe is inserted into the mounting holes. A fixing sleeve is fitted onto the liquid inlet pipe, and the fixing sleeve is connected to the outer mold base. The mounting holes on the outer mold base allow for the insertion of the liquid inlet pipe, and the fixing sleeve improves the connection stability of the liquid inlet pipe. This achieves the effect of rapid positioning and stable assembly of the liquid inlet pipe.

[0013] Preferably, the cooling assembly includes an isolation sleeve and cooling pipes. The inner extrusion sleeve, reinforcing layer extrusion sleeve, and outer extrusion sleeve are all provided with positioning grooves. The isolation sleeve engages with these positioning grooves. The inner wall of the isolation sleeve has a cooling cavity, within which the cooling pipes are placed. The isolation sleeve is quickly positioned using the positioning grooves recessed on the surfaces of the inner, reinforcing, and outer extrusion sleeves. After being fitted, the isolation sleeve is positioned by the positioning grooves, facilitating rapid assembly of the isolation sleeve with cooling pipes. This improves the assembly stability and efficiency of the cooling assembly.

[0014] Preferably, the isolation sleeve has an inlet and an outlet. One end of the cooling pipe is connected to the inlet, and the other end is connected to the outlet. The cooling pipe is arranged spirally around the positioning groove. One end of the cooling pipe extends from the inlet of the isolation sleeve, and the other end extends from the outlet to connect and transport the cooling medium. The cooling pipe is arranged in a spiral pattern inside to increase the cooling area and improve the cooling efficiency of the inner extrusion sleeve, the reinforcing layer extrusion sleeve, and the outer extrusion sleeve. This achieves the effect of improving cooling efficiency and ensuring coating uniformity.

[0015] The beneficial effects of this utility model are: the extrusion structure can form a fiber silicone hose in one step; the mold base accessories are easy to assemble, disassemble and maintain; it can quickly position and assemble to achieve high efficiency and high stability; it ensures uniform coating and high molding quality of the fiber silicone hose; and it improves the assembly efficiency and stability between accessories. Attached Figure Description

[0016] Figure 1 This is a perspective view of the utility model; Figure 2 yes Figure 1 A sectional view; Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0017] In the diagram: 1. Core rod, 2. Inner extrusion sleeve, 3. Reinforcing layer extrusion sleeve, 4. Outer extrusion sleeve, 5. Liquid inlet mold base, 6. Inner mold base, 7. Outer mold base, 8. Liquid inlet channel, 9. Liquid inlet pipe, 10. Support ring, 11. Mounting screw one, 12. Positioning block one, 13. Positioning block two, 14. Mounting ring, 15. Positioning ring, 16. Positioning groove, 17. Mounting screw two, 18. Mounting hole, 19. Fixing sleeve, 20. Isolation sleeve, 21. Cooling pipe, 22. Cooling cavity, 23. Inlet, 24. Outlet, 25. Positioning groove. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0019] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0020] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of components illustrated in these embodiments do not limit the scope of this application. For ease of illustration, spatial relative terms such as “up,” “down,” “left,” and “right” are used in the embodiments to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figures is inverted, an element described as being “below” other elements or features would be positioned “up” other elements or features. Thus, the exemplary term “down” can include both up and down orientations. The device may be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly. It should also be understood that, for ease of description, the dimensions of the various parts shown in the figures are not drawn to actual scale. Techniques, processes, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, processes, and equipment should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be discussed further in subsequent figures.

[0021] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0022] Example 1: like Figure 1 , 2As shown, a one-piece molded fiber silicone hose extrusion structure includes a core rod 1, with an inner extrusion sleeve 2, a reinforcing layer extrusion sleeve 3, and an outer extrusion sleeve 4 sequentially sleeved from one side to the other; a liquid inlet die seat 5, with both the reinforcing layer extrusion sleeve 3 and the outer extrusion sleeve 4 connected to the liquid inlet die seat 5, which includes an inner die seat 6 and an outer die seat 7, with the gap between the inner die seat 6 and the outer die seat 7 forming a liquid inlet channel 8; a liquid inlet pipe 9, connected to the outer die seat 7 and communicating with the liquid inlet channel 8; a support ring 10, which is fitted into the channel opening of the liquid inlet channel 8; an installation assembly, with both the reinforcing layer extrusion sleeve 3 and the outer extrusion sleeve 4 connected to the installation assembly, and the outer die seat 7 detachably connected to the installation assembly; a limiting assembly, with the inner die seat 6 detachably connected to the support ring 10 via the limiting assembly; and a cooling assembly, with the inner extrusion sleeve 2, the reinforcing layer extrusion sleeve 3, and the outer extrusion sleeve 4 all connected to the cooling assembly.

[0023] like Figure 2 As shown, the support ring 10 is provided with a connecting screw hole 1, and the limiting component includes a mounting screw 11, which is inserted into the inner mold base 6 and threadedly connected to the connecting screw hole 1.

[0024] like Figure 2 , 3 As shown, the limiting component includes a first positioning block 12 and a second positioning block 13. The first positioning block 12 is connected to the support ring 10, and the second positioning block 13 is connected to the inner mold base 6. The position of the first positioning block 12 corresponds to the position of the first connecting screw hole, and the position of the second positioning block 13 corresponds to the position of the first mounting screw 11.

[0025] like Figure 2 As shown, the mounting assembly includes a mounting ring 14, an outer mold base 7 is detachably connected to the mounting ring 14, a positioning ring 15 is connected to both the reinforcing layer extrusion sleeve 3 and the outer layer extrusion sleeve 4, and the mounting ring 14 is provided with a positioning groove 16 that is adapted to the positioning ring 15, and the positioning ring 15 is engaged with the mounting ring 14.

[0026] like Figure 2 , 3 As shown, the mounting assembly includes a second mounting screw 17, which is inserted into the mounting ring 14. The outer mold base 7 is provided with a second connecting screw hole, and the second mounting screw 17 is threadedly connected to the second connecting screw hole.

[0027] like Figure 1 , 2 As shown, the outer mold base 7 is provided with a mounting hole 18, the liquid inlet pipe 9 is inserted into the mounting hole 18, and the liquid inlet pipe 9 is fitted with a fixing sleeve 19, which is connected to the outer mold base 7.

[0028] like Figure 2 , 3As shown, the cooling assembly includes an isolation sleeve 20 and a cooling pipe 21. The inner extrusion sleeve 2, the reinforcing layer extrusion sleeve 3 and the outer extrusion sleeve 4 are all provided with positioning grooves 25. The isolation sleeve 20 is engaged with the positioning grooves 25. The inner wall of the isolation sleeve 20 is provided with a cooling cavity 22, and the cooling pipe 21 is placed in the cooling cavity 22.

[0029] like Figure 1 , 2 As shown, the isolation sleeve 20 is provided with an inlet 23 and an outlet 24. One end of the cooling pipe 21 is connected to the inlet 23, and the other end of the cooling pipe 21 is connected to the outlet 24. The cooling pipe 21 is arranged spirally around the positioning groove 16.

[0030] like Figure 1-3 As shown: The extrusion structure is mounted on an extruder (not shown in the figure). The extruder is an existing extrusion equipment containing a fiber silicone hose inner layer material. The inner layer material is extruded into the extrusion structure by the action of the extruder.

[0031] The liquid inlet die holder 5 is provided with two for extruding the middle layer and the outer layer respectively. The inner die holder 6 of the liquid inlet die holder 5 of the middle layer is sleeved with the inner layer extrusion sleeve 2, and the outer die holder 7 is sleeved with the reinforcing layer extrusion sleeve 3. The inner die holder 6 of the liquid inlet die holder 5 of the outer layer is sleeved with the reinforcing layer extrusion sleeve 3, and the outer die holder 7 is sleeved with the outer layer extrusion sleeve 4. This facilitates assembly and allows the size of the liquid inlet channel 8 to be controlled as needed to improve adaptability.

[0032] The inlet pipe 9 of the front liquid inlet mold base 5 is connected to the pipeline of the middle layer material feeding and storage equipment (not shown in the figure), and the inlet pipe 9 of the rear liquid inlet mold base 5 is connected to the pipeline of the outer layer material feeding and storage equipment (not shown in the figure), so that the solutions of the middle layer material and the outer layer material can be transported and fed. The cooling pipe 22 is connected to the pipeline of the cooling equipment (cold air or cold water) (not shown in the figure), which transports the cooling medium to the cooling pipe 22.

[0033] During assembly: Assemble and fix the core rod 1 and the inner extrusion sleeve 2 (which connects the cooling component and the inner mold base 6) to the extruder, then insert the support ring 10, fix the support ring 10 and the inner mold base 6 with the first mounting screw 11, insert the outer mold base 7 (with the liquid inlet pipe 9), insert the reinforcing layer extrusion sleeve 3 (with the cooling component) and the mounting ring 14, and connect and fix the second mounting screw 17 to the outer mold base 7; insert the inner mold base 6 of the rear liquid inlet mold base 5 into the reinforcing layer extrusion sleeve 3, fix the support ring 10 and the inner mold base 6 with the first mounting screw 11, insert the outer mold base 7 (with the liquid inlet pipe 9), insert the reinforcing layer extrusion sleeve 3 (with the cooling component) and the mounting ring 14, and connect and fix the second mounting screw 17 to the outer mold base 7 to complete the assembly of the extrusion structure.

[0034] In use: The inner material is fed to the extrusion structure through the extruder. The inner material (silicone) first enters the space between the inner extrusion sleeve 2 and the core rod 1 and flows backward. It is then cooled and shaped to the required hardness by the low temperature of the cooling component. The front liquid inlet die 5 adds the middle layer material (which can be polyester fiber, aramid fiber or glass fiber) through the liquid inlet channel 8. This allows the middle layer material to cover the space between the reinforcing inner extrusion sleeve 3 and the core rod 1 and cool and shape it during extrusion. The rear liquid inlet die 5 adds the outer layer material (silicone) through the liquid inlet channel 8. This allows the outer layer material to cover the space between the outer extrusion sleeve 4 and the core rod 1 and cool and shape it during extrusion. This process can then extrude a one-time molded fiber silicone hose.

[0035] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A one-piece molded fiber silicone hose extrusion structure, characterized in that it includes... Core rod (1), wherein an inner extrusion sleeve (2), a reinforcing layer extrusion sleeve (3) and an outer extrusion sleeve (4) are sequentially sleeved from one side to the other. The liquid inlet mold base (5) is connected to the reinforcing layer extrusion sleeve (3) and the outer layer extrusion sleeve (4). The liquid inlet mold base (5) includes an inner mold base (6) and an outer mold base (7). The gap between the inner mold base (6) and the outer mold base (7) is set as a liquid inlet channel (8). Liquid inlet pipe (9), the liquid inlet pipe (9) is connected to the outer mold base (7), and the liquid inlet pipe (9) is connected to the liquid inlet channel (8); Support ring (10), which is fitted into the channel opening of the liquid inlet channel (8); The mounting components are connected to both the reinforcing layer extrusion sleeve (3) and the outer layer extrusion sleeve (4), and the outer mold base (7) is detachably connected to the mounting components. The limiting component is used to detachably connect the inner mold base (6) to the support ring (10); The cooling assembly is connected to the inner extrusion sleeve (2), the reinforcing layer extrusion sleeve (3) and the outer extrusion sleeve (4).

2. The one-piece molded fiber silicone hose extrusion structure according to claim 1, characterized in that, The support ring (10) is provided with a connecting screw hole, and the limiting component includes a mounting screw (11), which is inserted into the inner mold base (6) and threadedly connected to the connecting screw hole.

3. The one-piece molded fiber silicone hose extrusion structure according to claim 1, characterized in that, The limiting component includes a positioning block one (12) and a positioning block two (13). The positioning block one (12) is connected to the support ring (10), and the positioning block two (13) is connected to the inner mold base (6). The position of the positioning block one (12) corresponds to the position of the connecting screw hole one, and the position of the positioning block two (13) corresponds to the position of the mounting screw one (11).

4. The one-piece molded fiber silicone hose extrusion structure according to claim 1, characterized in that, The mounting assembly includes a mounting ring (14), the outer mold base (7) is detachably connected to the mounting ring (14), the reinforcing layer extrusion sleeve (3) and the outer layer extrusion sleeve (4) are both connected to a positioning ring (15), the mounting ring (14) is provided with a positioning groove (16) adapted to the positioning ring (15), and the positioning ring (15) is engaged with the mounting ring (14).

5. The one-piece molded fiber silicone hose extrusion structure according to claim 4, characterized in that, The mounting assembly includes a second mounting screw (17), which is inserted into a mounting ring (14). The outer mold base (7) is provided with a second connecting screw hole, and the second mounting screw (17) is threadedly connected to the second connecting screw hole.

6. The one-piece molded fiber silicone hose extrusion structure according to claim 1 or 5, characterized in that, The outer mold base (7) is provided with an installation hole (18), the liquid inlet pipe (9) is inserted into the installation hole (18), the liquid inlet pipe (9) is fitted with a fixing sleeve (19), and the fixing sleeve (19) is connected to the outer mold base (7).

7. The one-piece molded fiber silicone hose extrusion structure according to claim 1, characterized in that, The cooling assembly includes an isolation sleeve (20) and a cooling pipe (21). The inner extrusion sleeve (2), the reinforcing layer extrusion sleeve (3) and the outer extrusion sleeve (4) are all provided with positioning grooves (25). The isolation sleeve (20) is engaged with the positioning grooves (25). The inner wall of the isolation sleeve (20) is provided with a cooling cavity (22). The cooling pipe (21) is placed in the cooling cavity (22).

8. The one-piece molded fiber silicone hose extrusion structure according to claim 7, characterized in that, The isolation sleeve (20) is provided with an inlet (23) and an outlet (24). One end of the cooling pipe (21) is connected to the inlet (23), and the other end of the cooling pipe (21) is connected to the outlet (24). The cooling pipe (21) is arranged spirally around the positioning groove (16).

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