Detachable winding core mold

Abstract

The utility model discloses a detachable winding core mold. The detachable winding core mold comprises a core mold main body and a central shaft, a center hole is formed in the middle of the core mold body, a transmission boss is arranged on the inner wall of the center hole, a transmission groove is formed in the outer curved surface of the center shaft, a positioning groove is formed in the inner wall of the transmission groove, a first supporting spring is fixedly installed at the bottom in the positioning groove, and a positioning block is fixedly installed at the upper end of the first supporting spring. Internal thread adjusting holes are formed in the outer sides of the two ends of the center shaft, transmission rods are in threaded connection with the inner walls of the internal thread adjusting holes, fastening rings used for locking and fastening the transmission rods are in threaded connection with the outer curved surfaces of the inner sides of the transmission rods, a winding groove is formed in the outer curved surface of the core mold body, and limiting sliding holes are formed in the two sides of the bottom in the winding groove. According to the utility model, the core mold main body is convenient to disassemble and replace while forming and winding of a winding product are realized through the core mold main body.

Description

Technical Field

[0001] This utility model relates to the field of winding molding technology, specifically a detachable winding mandrel. Background Technology

[0002] A winding mandrel is a mold component used in the winding process to support the fiber material and define the shape of the product. It typically conforms to the internal shape of the wound product and is removed after the product has cured. The main functions of a winding mandrel include:

[0003] Determining Product Shape: The shape of the mandrel directly determines the shape of the wound product. By designing mandrels of different shapes, wound products of various shapes and structures can be produced. Supporting Fiber Material: During the winding process, the mandrel supports the fiber material, ensuring that the fibers can wind according to a predetermined pattern, thereby forming a stable product structure. Improving Production Efficiency: Using mandrels simplifies the production process and improves production efficiency. Standardized mandrel design and manufacturing enable quick replacement and reuse, reducing production costs. Ensuring Product Quality: The precision and stability of the mandrel are crucial to product quality. High-precision mandrels ensure accurate dimensions and structural stability of the wound product, thereby improving the overall quality of the product.

[0004] However, in practical applications, existing technologies typically require mandrels to assist in the forming and winding of materials such as stretch film and plastic film during production. Traditional mandrels are mostly one-piece designs, which present problems such as difficulty in replacement, high maintenance costs, and inapplicability to various product specifications, thus affecting the production efficiency of stretch film, plastic film, and other materials. Utility Model Content

[0005] The purpose of this invention is to provide a detachable winding mandrel to address the issue raised in the background section regarding the need for mandrels to assist in the forming and winding of materials such as stretch film and plastic film during production. Traditional mandrels are mostly one-piece designs, which suffer from difficulties in replacement, high maintenance costs, and inapplicability to various product specifications, thus affecting the production efficiency of stretch film, plastic film, and other materials.

[0006] To achieve the above objectives, this utility model provides the following technical solution: comprising a core mold body and a central shaft;

[0007] The core mold body has a central hole in the middle, a transmission boss in the inner wall of the central hole, a transmission groove in the outer curved surface of the central shaft, a positioning groove in the inner wall of the transmission groove, a first support spring fixedly installed at the bottom of the positioning groove, a positioning block fixedly installed at the upper end of the first support spring, and internal thread adjustment holes in the outer sides of both ends of the central shaft. A transmission rod is threadedly connected to the inner wall of the internal thread adjustment hole, and a fastening ring for locking and fastening the transmission rod is threadedly connected to the outer curved surface of the inner side of the transmission rod.

[0008] The outer curved surface of the core mold body is provided with a winding groove. Limiting sliding holes are provided on both sides of the bottom of the winding groove. Limiting sliding pins are movably connected to the inner walls of the limiting sliding holes. A pressing arc plate is fixedly installed on the upper end of the limiting sliding pin. A second support spring is fixedly installed on both sides of the bottom of the winding groove. Pull holes are provided on both sides of the middle part of the upper end of the pressing arc plate. Pull pins are movably connected to the inner walls of the pull holes. A limiting ring is fixedly installed on the outer curved surface of the lower end of the pull pin.

[0009] Preferably, the central shaft is movably connected to the inner wall of the core mold body, and there are two transmission bosses, which are symmetrically distributed around the inner wall of the central hole. The transmission bosses are movably connected to the inner wall of the transmission groove.

[0010] Preferably, there are four positioning grooves, with two positioning grooves forming a group, and the two groups of positioning grooves are symmetrically distributed along the inner wall of the transmission groove.

[0011] Preferably, the first support springs are symmetrically distributed at the bottom of the positioning groove, the lower end of the positioning block is movably connected to the upper inner wall of the positioning groove, the upper end of the positioning block has rounded corners on both sides, the inner side of the positioning block is movably connected to the outer sides of both ends of the core mold body, and the outer curved surface of the inner side of the transmission rod has an external thread.

[0012] Preferably, there are two limiting sliding holes, which are symmetrically distributed on both sides of the bottom of the winding groove.

[0013] Preferably, the pressing arc plate is movably connected to the inner wall of the winding groove, and the upper end of the pressing arc plate maintains a uniform curvature with the outer curved surface of the core mold body.

[0014] Preferably, the top end of the second support spring is fixedly installed on the lower end face of the pressing arc plate, and there are two pull holes, which are symmetrically distributed on both sides of the middle of the upper end of the pressing arc plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] When the core mold body needs to be disassembled and replaced, the fastening ring is loosened by rotating it. When the fastening ring is loosened, the threaded connection between the transmission rod and the inner wall of the internal thread adjustment hole can be released or adjusted by rotating the central shaft or transmission rod. When the threaded connection between the transmission rod and the inner wall of the internal thread adjustment hole is released, the positioning block is pressed. When the positioning block is pressed, it compresses the first support spring and retracts to the inner wall of the positioning groove. When the positioning block retracts to the inner wall of the positioning groove, the positioning of the core mold body by the positioning block is released. When the positioning block releases the positioning of the core mold body, the core mold body can be disassembled from the middle of the central shaft by pulling it outward. Thus, the core mold body can be used to form and wind the winding product while facilitating the disassembly and replacement of the core mold body.

[0017] This invention also features a mechanism where, when the pressing arc plate is pressed downwards, it moves linearly downwards along the inner wall of the winding groove, simultaneously compressing the second support spring. As the pressing arc plate moves downwards, the pull column protrudes from the inner wall of the pull hole. When the pull column protrudes, it is pulled upwards, and this upward movement, via the limiting ring, causes the pressing arc plate to move linearly upwards. As the pressing arc plate moves linearly upwards, it opens the winding groove and stretches the second support spring. When the winding groove is open, the pressing arc plate facilitates pressing and positioning the beginning of the product to be wound, thus enabling the shaping and winding of the product while simultaneously pressing and positioning the beginning of the product to be wound. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a detachable winding mandrel according to the present invention. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the overall structure of a detachable winding mandrel according to the present invention. Figure 2 ;

[0020] Figure 3 This is a partial cross-sectional view of a detachable winding mandrel according to the present invention. Figure 1 ;

[0021] Figure 4 This is a partial cross-sectional view of a detachable winding mandrel according to the present invention. Figure 2 .

[0022] In the diagram: 1. Core mold body; 2. Central shaft; 3. Central hole; 4. Transmission boss; 5. Transmission groove; 6. Positioning groove; 7. First support spring; 8. Positioning block; 9. Internal thread adjustment hole; 10. Transmission rod; 11. Fastening ring; 12. Winding groove; 13. Limiting sliding hole; 14. Limiting sliding column; 15. Pressing arc plate; 16. Second support spring; 17. Pull hole; 18. Pull column; 19. Limiting ring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 This utility model provides a detachable winding mandrel technical solution: including a mandrel body 1 and a central shaft 2, wherein the central shaft 2 is movably connected to the inner wall of the mandrel body 1;

[0025] The core mold body 1 has a central hole 3 in the middle. Two transmission bosses 4 are symmetrically distributed along the inner wall of the central hole 3. A transmission groove 5 is formed on the outer curved surface of the central shaft 2, and the transmission bosses 4 are movably connected to the inner wall of the transmission groove 5, allowing the central shaft 2 to transmit power to the core mold body 1 through the transmission groove 5 and the transmission bosses 4. Four positioning grooves 6 are formed on the inner wall of the transmission groove 5, with two positioning grooves 6 forming a group. The two groups of positioning grooves 6 are symmetrically distributed along the inner wall of the transmission groove 5. A first support spring 7 is fixedly installed at the bottom of each positioning groove 6, and the first support spring 7 is fixed to the positioning groove. The bottom of the groove 6 is symmetrically distributed. The upper end of the first support spring 7 is fixedly installed with a positioning block 8, and the lower end of the positioning block 8 is movably connected to the upper inner wall of the positioning groove 6, so that the positioning block 8 is limited by the positioning groove 6. The upper end of the positioning block 8 has rounded corners on both sides. The inner side of the positioning block 8 is movably connected to the outer sides of both ends of the core mold body 1, so that the core mold body 1 is positioned by the positioning block 8. The outer sides of both ends of the central shaft 2 have internal thread adjustment holes 9. The inner wall of the internal thread adjustment hole 9 is threadedly connected to the transmission rod 10, and the outer curved surface of the inner side of the transmission rod 10 has an external thread. The outer curved surface of the inner side of the transmission rod 10 is threadedly connected to a fastening ring 11 for locking and fastening the transmission rod 10.

[0026] The outer curved surface of the core mold body 1 has a winding groove 12. Two limiting sliding holes 13 are provided on both sides of the bottom of the winding groove 12, symmetrically distributed on both sides of the bottom of the winding groove 12. A limiting sliding post 14 is movably connected to the inner wall of the limiting sliding hole 13. A pressing arc plate 15 is fixedly installed on the upper end of the limiting sliding post 14 and movably connected to the inner wall of the winding groove 12. The upper end of the pressing arc plate 15 maintains a uniform curvature with the outer curved surface of the core mold body 1. A second support spring 16 is fixedly installed, and the top end of the second support spring 16 is fixedly installed on the lower end face of the pressing arc plate 15, so that the pressing arc plate 15 is linearly elastically supported by the second support spring 16 in conjunction with the limiting slide column 14. Pull holes 17 are opened on both sides of the upper middle part of the pressing arc plate 15, and there are two pull holes 17, which are symmetrically distributed on both sides of the upper middle part of the pressing arc plate 15. The inner wall of the pull hole 17 is movably connected to the pull column 18, and the lower outer curved surface of the pull column 18 is fixedly installed with a limiting ring 19.

[0027] Working principle: In use, this utility model is connected to an external transmission mechanism through a transmission rod 10. When the transmission rod 10 is connected to the external transmission mechanism, the external transmission mechanism can drive the transmission rod 10 to rotate. When the transmission rod 10 rotates, it will drive the central shaft 2 to rotate. When the central shaft 2 rotates, it will drive the core mold body 1 to rotate through the transmission groove 5 and the transmission boss 4. When the core mold body 1 rotates, the core mold body 1 can be used to form and wind the winding product.

[0028] When the core mold body 1 needs to be disassembled and replaced, the fastening ring 11 is loosened by rotating it. When the fastening ring 11 is loosened, the threaded connection between the transmission rod 10 and the inner wall of the internal thread adjustment hole 9 can be released or adjusted by rotating the central shaft 2 or the transmission rod 10. When the threaded connection between the transmission rod 10 and the inner wall of the internal thread adjustment hole 9 is released, the positioning block 8 is pressed. When the positioning block 8 is pressed, the positioning block 8 will compress the first support spring 7 and retract to the inner wall of the positioning groove 6. When the positioning block 8 retracts to the inner wall of the positioning groove 6, the positioning of the core mold body 1 by the positioning block 8 can be released. When the positioning block 8 releases the positioning of the core mold body 1, the core mold body 1 can be disassembled from the middle of the central shaft 2 by pulling the core mold body 1 outward. Thus, the core mold body 1 can be used to form and wind the winding product at the same time, and it is convenient to disassemble and replace the core mold body 1.

[0029] Simultaneously, by pressing down on the pressing arc plate 15, when the pressing arc plate 15 is pressed down, it will move linearly downward along the inner wall of the winding groove 12, while pushing and compressing the second support spring 16. When the pressing arc plate 15 moves linearly downward, the pull column 18 will protrude from the inner wall of the pull hole 17. When the pull column 18 protrudes from the inner wall of the pull hole 17, by pulling the pull column 18 upward, when the pull column 18 is pulled upward, it will drive the pressing arc plate 15 to move linearly upward through the limiting ring 19. When the pressing arc plate 15 moves linearly upward, it will open the winding groove 12 and stretch the second support spring 16. When the winding groove 12 is open, it can be used in conjunction with the pressing arc plate 15 to easily press and position the first end of the product to be wound, thereby realizing the forming and winding of the product while facilitating the pressing and positioning of the first end of the product to be wound.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detachable winding mandrel, characterized in that: Includes the core mold body (1) and the central shaft (2); The core mold body (1) has a central hole (3) in the middle, a transmission boss (4) is provided on the inner wall of the central hole (3), a transmission groove (5) is provided on the outer curved surface of the central shaft (2), a positioning groove (6) is provided on the inner wall of the transmission groove (5), a first support spring (7) is fixedly installed at the bottom of the positioning groove (6), a positioning block (8) is fixedly installed on the upper end of the first support spring (7), an internal thread adjustment hole (9) is provided on the outer side of both ends of the central shaft (2), a transmission rod (10) is threadedly connected to the inner wall of the internal thread adjustment hole (9), and a fastening ring (11) for locking and fastening the transmission rod (10) is threadedly connected to the outer curved surface of the inner side of the transmission rod (10). The outer curved surface of the core mold body (1) is provided with a winding groove (12). The bottom sides of the winding groove (12) are provided with limit sliding holes (13). The inner wall of the limit sliding hole (13) is fitted and movably connected with a limit sliding column (14). The upper end of the limit sliding column (14) is fixedly installed with a pressing arc plate (15). The bottom sides of the winding groove (12) are fixedly installed with a second support spring (16). The upper middle part of the pressing arc plate (15) is provided with a pull hole (17). The inner wall of the pull hole (17) is fitted and movably connected with a pull column (18). The lower outer curved surface of the pull column (18) is fixedly installed with a limit ring (19).

2. The detachable winding mandrel according to claim 1, characterized in that: The central shaft (2) is movably connected to the inner wall of the core mold body (1). There are two transmission bosses (4), which are symmetrically distributed with respect to the inner wall of the central hole (3). The transmission bosses (4) are movably connected to the inner wall of the transmission groove (5).

3. A detachable winding mandrel according to claim 2, characterized in that: There are four positioning grooves (6), and each pair of positioning grooves (6) forms a group. The two groups of positioning grooves (6) are symmetrically distributed on the inner wall of the transmission groove (5).

4. A detachable winding mandrel according to claim 3, characterized in that: The first support springs (7) are symmetrically distributed at the bottom of the positioning groove (6). The lower end of the positioning block (8) is movably connected to the upper inner wall of the positioning groove (6). The upper sides of the positioning block (8) are rounded. The inner side of the positioning block (8) is movably connected to the outer sides of both ends of the core mold body (1). The outer curved surface of the inner side of the transmission rod (10) is provided with external threads.

5. A detachable winding mandrel according to claim 4, characterized in that: There are two limiting sliding holes (13), which are symmetrically distributed on both sides of the bottom of the winding groove (12).

6. A detachable winding mandrel according to claim 5, characterized in that: The pressing arc plate (15) is movably connected to the inner wall of the winding groove (12), and the upper end of the pressing arc plate (15) maintains the same curvature as the outer curved surface of the core mold body (1).

7. A detachable winding mandrel according to claim 6, characterized in that: The top end of the second support spring (16) is fixedly installed on the lower end face of the pressing arc plate (15). There are two pull holes (17), which are symmetrically distributed on both sides of the middle of the upper end of the pressing arc plate (15).

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