Processing equipment for silicone tube with built-in spring

Abstract

The utility model relates to processing equipment for a silicone tube with a built-in spring, and belongs to the technical field of spring mattress manufacturing. The processing equipment for the silicone tube with the built-in spring comprises a silicone extrusion unit, the silicone extrusion unit comprises a silicone injection port and an extrusion port die, the silicone extrusion unit is used for extruding an injected silicone material into silicone sheets with equal thickness, and the extrusion port die comprises a rectangular opening; the silica gel sheet cutting unit comprises a cutting knife, and the cutting knife is used for cutting the silica gel sheet to obtain a silica gel sector; the film pressing forming unit comprises a forming cavity, the forming cavity is in a circular truncated cone shape, and a circular truncated cone-shaped fixing column is arranged in the center of the forming cavity; and the heating and pressurizing unit is used for carrying out heating vulcanization and pressurizing forming on the silicone tube in the forming cavity. According to the processing equipment, a mode of combining extrusion molding and compression molding is adopted, and a silicone tube product internally provided with an irregular spring can be rapidly and efficiently processed and produced.

Description

Technical Field

[0001] This application relates to a processing equipment for silicone tubes with built-in springs, belonging to the field of spring mattress manufacturing technology. Background Technology

[0002] Spring mattresses are a commonly used type of mattress. They typically consist of a core and a fabric or soft mat covering the core. The core is composed of several vertical springs. When the springs are under pressure, they are compressed, and when the pressure is released, they automatically rebound. Spring mattresses offer good support and resilience, making them more comfortable than regular firm mattresses.

[0003] The spring structure in spring mattresses has evolved from the initial whole-spring, such as drawn wire springs, Bonnell round springs, Merrick springs, and posture-sensing springs, to the more popular individual pocket springs. Each spring is set up independently, so its extension and support are independent. This can effectively avoid the noise problem caused by the internal action of traditional whole-spring, and the anti-interference ability is greatly improved.

[0004] Existing independent pocket spring structures are relatively simple, and their shapes are mostly regular cylinders, making their manufacturing methods relatively simple. They are also typically wrapped with fabric or sound-absorbing materials, requiring no complex processing techniques. To further improve the rebound effect of independent pocket springs and thus enhance mattress comfort, a non-cylindrical silicone elastomer with built-in springs is proposed. Therefore, it is necessary to provide a processing device that facilitates processing and manufacturing. Utility Model Content

[0005] To address the aforementioned issues, this application proposes a processing device for silicone tubes with built-in springs. This processing device combines extrusion molding and compression molding, enabling rapid and efficient production of silicone tubes with built-in irregular springs. It offers advantages such as ease of use and simple structure, significantly improving the industrial production efficiency of unconventional silicone tubes.

[0006] This application provides a processing apparatus for a silicone tube with a built-in spring, comprising:

[0007] A silicone extrusion unit, comprising an injection port and an extrusion die, wherein the silicone extrusion unit is used to extrude injected silicone material into a silicone sheet of uniform thickness, and the extrusion die comprises a rectangular opening;

[0008] A silicone sheet cutting unit, the silicone sheet cutting unit including a cutting blade, the cutting blade being used to cut a silicone sheet to obtain a silicone fan-shaped surface;

[0009] A membrane compression molding unit, the membrane compression molding unit including a molding cavity, the molding cavity being frustum-shaped, and a frustum-shaped fixing post being provided at the center of the molding cavity;

[0010] A heating and pressurizing unit is used to heat, vulcanize, and pressurize the silicone tube inside the molding cavity.

[0011] Optionally, the membrane molding unit includes a base, a first pressure member, a second pressure member, and a top cover;

[0012] The fixing column is fixed to the center of the base, and the first pressure member, the second pressure member, and the top cover are movable and can be assembled with the base to form the molding cavity.

[0013] Optionally, the first pressure member and the second pressure member have the same shape and are both fan-shaped with a certain degree of curvature.

[0014] Optionally, the first pressure member, the second pressure member, and the top cover are all fixedly connected to the drive mechanism and can move under the drive of the drive mechanism.

[0015] Optionally, the membrane molding unit is further provided with a scrap cutting blade, which can rotate along the first pressure member and the second pressure member.

[0016] Optionally, the rectangular opening width of the extrusion die in the silicone extrusion unit is not less than 18mm, and the distance between the first pressure member or the second pressure member and the fixed column is not less than 34mm.

[0017] Optionally, the cutting blade includes a cutting frame, which is fan-shaped.

[0018] Optionally, a spring mounting unit may also be included, which is used to mount the spring into the molding cavity.

[0019] Optionally, it also includes a silicone material particle injection unit, which includes a first supply line and a second supply line. The first supply line is connected to the injection port of the silicone extrusion unit, and the second supply line is connected to the molding space of the membrane molding unit.

[0020] Optionally, a silicone tube demolding unit may also be included, the silicone tube demolding unit including grippers for removing the silicone tube from the molding cavity.

[0021] The beneficial effects that this application may produce include, but are not limited to:

[0022] The processing equipment for silicone tubes with built-in springs provided in this application includes a silicone extrusion unit and a film compression molding unit. Combining extrusion molding and compression molding, it realizes the processing and manufacturing of unconventional frustum-shaped silicone tubes with built-in springs. This processing equipment can efficiently and quickly realize the processing and manufacturing of unconventional frustum-shaped silicone tubes with built-in springs. The processing steps are simple, which can improve the production efficiency of silicone tubes and has important industrial production application value. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0024] Figure 1 This is a vertical cross-sectional view of the silicone tube with an internal spring involved in this application;

[0025] Figure 2 This is a perspective view of the molding cavity structure in the processing equipment for the silicone tube with built-in spring according to the embodiments of this application;

[0026] Figure 3 This is a front view of the extrusion die in the processing equipment for the silicone tube with a built-in spring according to an embodiment of this application;

[0027] Figure 4 This is a perspective view of the equal-thickness silicone sheet involved in the embodiments of this application;

[0028] Figure 5 This is a top view of the cutting frame involved in the embodiments of this application.

[0029] List of components and reference numerals:

[0030] Inner cylinder-1, outer cylinder-2, independent spring-3, thin end-4, thick end-5, equal thickness silicone sheet-6, cutting frame-7, base-8, fixing column-9, first pressure component-10, second pressure component-11, top cover-12, extrusion die-13. Detailed Implementation

[0031] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0032] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0033] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0034] Furthermore, it should be understood in the description of this application that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0037] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0038] refer to Figure 1 A silicone tube with a built-in spring, comprising:

[0039] The inner cylinder is a frustum with a through hole in the middle;

[0040] The outer cylinder is a frustum with a central receiving space for placing the inner cylinder.

[0041] An independent spring, comprising a thin end and a thick end, wherein the diameter of the thick end is larger than the diameter of the thin end, is located on the outer edge of the inner cylinder and is completely covered by the outer cylinder.

[0042] In one implementation, the fine end diameter of the independent spring is 50~60mm, and the coarse end diameter of the independent spring is 80~90mm.

[0043] In one implementation, the number of coils in the independent spring is 4 to 10.

[0044] In one implementation, the wire diameter of the independent spring is 2.8~3.2mm.

[0045] In one implementation method, the thickness of the inner cylinder is not less than 16mm.

[0046] In one implementation method, the thickness of the outer cylinder is not less than 18mm.

[0047] In one implementation method, the independent spring is a high-manganese carbon steel spring.

[0048] refer to Figures 2-5 This application provides a processing apparatus for the aforementioned silicone tube with a built-in spring, comprising:

[0049] The silicone extrusion unit includes an injection port and an extrusion die. The silicone extrusion unit is used to extrude the injected silicone material into a silicone sheet of uniform thickness. The extrusion die includes a rectangular opening.

[0050] A silicone sheet cutting unit, which includes a cutting blade for cutting silicone sheets to obtain silicone fan surfaces;

[0051] The membrane compression molding unit includes a molding cavity, which is shaped like a frustum, and a frustum-shaped fixing post is provided at the center of the molding cavity.

[0052] The heating and pressurizing unit is used to heat, vulcanize, and pressurize the silicone tube inside the molding cavity.

[0053] The processing equipment for silicone tubes with built-in springs provided in this application includes a silicone extrusion unit and a film compression molding unit. Combining extrusion molding and compression molding, it realizes the processing and manufacturing of unconventional frustum-shaped silicone tubes with built-in springs. This processing equipment can efficiently and quickly realize the processing and manufacturing of unconventional frustum-shaped silicone tubes with built-in springs. The processing steps are simple, which can improve the production efficiency of silicone tubes and has important industrial production application value.

[0054] In one embodiment, the membrane molding unit includes a base, a first pressure member, a second pressure member, and a top cover;

[0055] The fixed column is fixed to the center of the base, and the first pressure component, the second pressure component, and the top cover can be moved and assembled with the base to form a molded cavity.

[0056] The base, first pressure component, second pressure component, and top cover work together to form the molding space required for compression molding. This molding space is used to inject silicone particles for compression molding, thereby realizing the preparation of the outer cylinder and the covering of the spring.

[0057] It should be noted that the membrane compression molding unit, i.e., the mold used in compression molding, works in conjunction with a heating and pressurizing unit. For example, heating is achieved through heat conduction via the mold, and the pressure on the product inside the molding cavity is controlled by power-controlled mold movement. This is a relatively mature compression molding process in the existing technology, and those skilled in the art can understand it.

[0058] In one implementation, the first pressure member and the second pressure member have the same shape and are both fan-shaped with a certain degree of curvature.

[0059] In one embodiment, the first pressure member, the second pressure member, and the top cover are all fixedly connected to the drive mechanism and can move under the drive of the drive mechanism.

[0060] Driven by the drive mechanism, the first pressure component, the second pressure component, and the top cover can be moved to form the molding cavity during compression molding, or after molding, the first pressure component, the second pressure component, and the top cover can be moved by the drive mechanism to demold the molded silicone tube.

[0061] In one embodiment, the membrane molding unit is further provided with a scrap cutting blade, which can rotate along the first pressure member and the second pressure member.

[0062] During the molding process, excessive addition of silicone particles may cause some material to overflow. The overflow material can be quickly removed by the excess material cutting blade, avoiding the problems of complicated processes and more difficult handling after molding.

[0063] In one embodiment, the rectangular opening width of the extrusion die in the silicone extrusion unit is not less than 18mm, and the distance between the first pressure member or the second pressure member and the fixed column is not less than 34mm.

[0064] The rectangular opening width of the extrusion die in the silicone extrusion unit determines the distance between the spring and the inside of the silicone tube. The distance between the first or second pressure member and the fixed post determines the overall thickness of the silicone tube. Since the silicone tube contains a spring, the silicone covering the spring needs to have a certain thickness to provide sufficient protection for the spring and prevent damage to the silicone material during use. If the spring is exposed, the springs in adjacent silicone tubes in the mattress will release, causing unbearable noise.

[0065] In one embodiment, the cutting blade includes a cutting frame that is fan-shaped.

[0066] Using a fan-shaped cutting frame as a cutting blade, the desired inner cylinder shape can be obtained quickly and efficiently. This allows for precise control over the silicone fan-shaped surface obtained each time, and the cutting does not require a complex control mechanism, offering the advantages of speed and efficiency.

[0067] As one implementation, a spring mounting unit is also included, which is used to mount the spring into the molding cavity.

[0068] The spring mounting unit can fix the spring to the outside of the inner cylinder outside the fixing column, which facilitates the injection of silicone particles into the molding cavity for subsequent molding of the outer cylinder. This can improve the automation level of the processing equipment and increase the production efficiency of silicone tubes.

[0069] As one embodiment, it also includes a silicone material particle injection unit, which includes a first supply line and a second supply line. The first supply line is connected to the injection port of the silicone extrusion unit, and the second supply line is connected to the molding space of the membrane compression molding unit.

[0070] It should be noted that the connection between the second supply line and the molding space of the membrane molding unit means that they can be connected, because the molding space needs to be kept sealed during the molding process. For example, the outlet of the second supply line is located above the opening of the top cover of the molding cavity, and the silicone particles can fall directly into the molding cavity through this opening.

[0071] As one implementation, a silicone tube demolding unit is also included, which includes grippers for removing the silicone tube from the molding cavity.

[0072] Using grippers to remove the molded silicone tube avoids the risks of insufficient force or damage during manual removal. Furthermore, mechanical grippers offer higher efficiency and more even and controllable force distribution. To further improve removal efficiency, the base can be equipped with auxiliary ejection cylinders or similar structures. These cylinders only function during the removal of the silicone tube from the mold, pushing it out from the base for easier extraction.

[0073] The working process of the processing equipment for the silicone tube with built-in spring provided in this application is as follows:

[0074] 1) Silicone particles enter the injection port and are extruded through the silicone extrusion unit. Silicone sheets of equal thickness are continuously extruded from the extrusion die. The silicone sheets are then cut by a cutting blade to obtain silicone fan surfaces. After the silicone fan surfaces are placed around the outside of the fixed column, they form the inner cylinder of the silicone tube.

[0075] 2) The spring is installed on the outside of the inner cylinder using a spring mounting unit;

[0076] 3) Then the first pressure component and the second pressure component move to form a molding cavity, and silicone particles are injected through the opening when the top cover is not closed. After the silicone particle material is injected, the top cover is closed to form a closed or semi-closed molding cavity.

[0077] 4) The silicone particles are heated and pressurized by the heating and pressurizing unit to form a membrane. The heating of the silicone particles can be done in stages. Technicians can adjust the sealing or semi-sealing of the molding cavity as needed. If there is too much silicone raw material, it can be cleaned up in time by the waste material cutting blade.

[0078] 5) After the molding is completed, a silicone tube with a built-in spring is obtained in the molding cavity. Then, the first pressure component, the second pressure component and the top cover are moved to open the molding cavity. The silicone tube can then be removed by gripping pliers.

[0079] against Figure 1 The structure is explained in detail below. The cut silicone fan-shaped surface is the inner cylinder structure, and the spring fixed on its outside is the built-in independent spring. The outer cylinder, which is prepared by molding, is the outer cylinder covered with the independent spring. Figure 3 The extrusion die can obtain Figure 4 The equal thickness silicone sheet in the middle, using Figure 5 The provided fan-shaped cutting frame is used to obtain the silicone fan surface, which is then wrapped around and fixed to the surface. Figure 2 The outer side of the central fixed column is the inner cylinder structure. After the independent spring is fixed on the outer side, silicone particles are injected into the molding cavity and molded to form an outer cylinder structure that covers the independent spring and is fixed integrally with the inner cylinder. This realizes the processing and manufacturing of silicone tubes with built-in springs. After being removed by grippers, the silicone tube product with built-in springs is obtained.

[0080] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0081] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A processing device for a silicone tube with a built-in spring, characterized in that, include: A silicone extrusion unit, comprising an injection port and an extrusion die, wherein the silicone extrusion unit is used to extrude injected silicone material into a silicone sheet of uniform thickness, and the extrusion die comprises a rectangular opening; A silicone sheet cutting unit, the silicone sheet cutting unit including a cutting blade, the cutting blade being used to cut a silicone sheet to obtain a silicone fan-shaped surface; A membrane compression molding unit, the membrane compression molding unit including a molding cavity, the molding cavity being frustum-shaped, and a frustum-shaped fixing post being provided at the center of the molding cavity; A heating and pressurizing unit is used to heat, vulcanize, and pressurize the silicone tube inside the molding cavity.

2. The processing equipment for the silicone tube with a built-in spring according to claim 1, characterized in that, The membrane molding unit includes a base, a first pressure component, a second pressure component, and a top cover; The fixing column is fixed to the center of the base, and the first pressure member, the second pressure member, and the top cover are movable and can be assembled with the base to form the molding cavity.

3. The processing equipment for the silicone tube with a built-in spring according to claim 2, characterized in that, The first pressure component and the second pressure component have the same shape, and both are fan-shaped with a certain degree of curvature.

4. The processing equipment for the silicone tube with a built-in spring according to claim 3, characterized in that, The first pressure component, the second pressure component, and the top cover are all fixedly connected to the drive mechanism and can move under the drive of the drive mechanism.

5. The processing equipment for the silicone tube with a built-in spring according to claim 4, characterized in that, The membrane forming unit is also provided with a scrap cutting blade, which can rotate along the first pressure member and the second pressure member.

6. The processing equipment for the silicone tube with a built-in spring according to claim 5, characterized in that, The rectangular opening width of the extrusion die in the silicone extrusion unit is not less than 18mm, and the distance between the first pressure member or the second pressure member and the fixed column is not less than 34mm.

7. The processing equipment for the silicone tube with a built-in spring according to claim 6, characterized in that, The cutting blade includes a cutting frame, which is fan-shaped.

8. The processing equipment for the silicone tube with a built-in spring according to claim 1, characterized in that, It also includes a spring mounting unit for mounting a spring into the molding cavity.

9. The processing equipment for the silicone tube with a built-in spring according to claim 1, characterized in that, It also includes a silicone material particle injection unit, which includes a first supply line and a second supply line. The first supply line is connected to the injection port of the silicone extrusion unit, and the second supply line is connected to the molding space of the membrane molding unit.

10. The processing equipment for the silicone tube with a built-in spring according to claim 1, characterized in that, It also includes a silicone tube demolding unit, which includes grippers for removing the silicone tube from the molding cavity.

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