A forming die for a nylon tube

Abstract

The utility model discloses a forming die of nylon pipe, aims at solving the complex structure of existing sheet metal die, the inconvenient feeding and discharging, the long assembly time and the easy collapse of pipeline port after forming, the oval problem. The die includes welding platform and the die assembly arranged thereon. The die assembly includes half planing metal hard pipe, metal hose, positioning pin, arc pressing plate and quick release structure. The half planing metal hard pipe is integrally bent and formed pipe fitting, is equipped with round section, special-shaped setting section and straight setting section in proper order. The metal hose is placed in the inside of special-shaped setting section, and the end is fixed through the positioning pin, and the position is adjusted through the locking screw. The quick release structure includes the pressing rod assembly with arc pressing plate and locking assembly, is used for quick pressing or loosening nylon pipe. The utility model discloses quick assembly and disassembly through integrated design, improves production efficiency and forming quality, and can adapt to the nylon pipe forming of different pipe diameter.

Description

Technical Field

[0001] This utility model relates to the field of automotive piping manufacturing technology, specifically to a molding die for nylon tubing. Background Technology

[0002] After extrusion and shaping, nylon tubing is in a straight tube state, while automotive tubing typically has a specific shape. To meet shape requirements, the tubing needs to be heated and cooled for shaping. Currently, mainstream manufacturers use sheet metal forming molds. However, existing sheet metal molds have disadvantages such as complex structure, inconvenience in loading and unloading nylon tubing, long assembly time, and poor forming results, easily leading to tubing end collapse or elliptical deformation, failing to meet customer assembly requirements. Therefore, a new type of mold is urgently needed to solve the above problems. Utility Model Content

[0003] The purpose of this utility model is to provide a molding die for nylon tubes, which aims to overcome the defects of the prior art and solve the problems of complex structure, inconvenient operation, low efficiency and poor molding effect of the existing molds.

[0004] Therefore, this utility model proposes a molding die for nylon tubes, including a welding platform, wherein at least one set of die components is provided on the welding platform, and the die components include: Semi-planed metal rigid tube, which is a one-piece molded bent tube, includes a full circle section, an irregular shape section and a straight shape section in sequence along the forming direction of the nylon tube; A flexible metal tube is disposed on the inner side of the irregularly shaped section; A positioning mechanism is provided on the entire circular section for adjusting the end position of the metal hose.

[0005] Preferably, the positioning mechanism includes a positioning pin fixed to the end of the metal hose, and an internal thread structure is provided on the side wall of the entire circular section. A locking screw is screwed into the internal thread structure and abuts against the positioning pin to adjust and lock its axial position.

[0006] Preferably, the molding die further includes a clamping mechanism, which is disposed on the outside of the irregularly shaped section and is used to press the nylon tube into the groove of the semi-planed metal tube.

[0007] Preferably, the pressing mechanism includes an arc-shaped pressure plate and a quick-release structure, wherein the quick-release structure is used to drive the arc-shaped pressure plate to press towards or away from the irregularly shaped shaping section.

[0008] Preferably, the quick-release structure includes a pressure rod assembly and a locking assembly. The pressure rod assembly includes a rotating seat fixedly connected to the welding platform, a pressure rod rotatably connected to the rotating seat, and a handle located at the end of the pressure rod. The arc-shaped pressure plate is fixedly connected to the middle of the pressure rod.

[0009] Preferably, the locking assembly includes a tension spring connected to the welding platform and a hook connected to the tension spring, the hook being used to engage and secure the assembly when the pressure bar is pressed down.

[0010] Preferably, the irregularly shaped section has a slot along its wavy direction.

[0011] Preferably, the cross-section of the straight shaping section is semi-circular.

[0012] Preferably, the welding platform is provided with multiple sets of mold components, which are arranged in a linear array.

[0013] Preferably, the semi-cut metal rigid tube and the metal flexible tube are made of stainless steel, copper or aluminum alloy.

[0014] The advantages of the nylon tube forming mold provided by this utility model are as follows: 1. The use of an integrated semi-planed metal rigid tube and a quick-release clamping mechanism enables rapid assembly and disassembly of the nylon tube, significantly improving production efficiency, saving time and costs, and making on-site operation simpler and more precise; 2. The internal support of the metal flexible tube effectively prevents the pipe end from collapsing and becoming elliptical, and the combination of the arc-shaped pressure plate ensures full fit between the nylon tube and the mold groove, guaranteeing the shape accuracy of the irregular tube; 3. The adjustable positioning mechanism can adapt to different initial length requirements; by replacing mold components of different diameters, the forming of nylon tubes of different diameters can be achieved, with good versatility; 4. The linear array layout of multiple mold components greatly improves production cycle and output.

[0015] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the structure of the irregularly shaped nylon tube of this utility model; Figure 2 This is a schematic diagram of the molding die for the nylon tube of this utility model; Figure 3 This is a partial structural diagram of the molding die for the nylon tube of this utility model (showing a single set of die components).

[0017] Explanation of reference numerals in the attached drawings: 1. Shaped nylon tube; 2. Welding bracket; 3. Metal flexible hose; 4. Positioning pin; 5. Semi-planed metal rigid tube; 6. Arc-shaped pressure plate; 7. Locking assembly; 8. Pressure rod assembly; 9. Welding platform; 51. Shaped shaping section; 52. Straight shaping section; 53. Round section; 54. Internal thread structure; 55. Locking screw; 71. Hook; 72. Tension spring; 81. Pressure rod; 82. Rotating seat; 83. Handle. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] like Figures 1-3 As shown, the present invention provides a molding die for a nylon tube, which mainly includes a welding platform 9 and several welding brackets 2 and several mold components mounted on it. Each mold component is responsible for shaping an irregularly shaped nylon tube 1. Each mold component includes: a flexible metal tube 3, a positioning pin 4, a semi-planed rigid metal tube 5, an arc-shaped pressure plate 6, a locking component 7, and a pressure rod component 8.

[0020] Specifically, the semi-planed metal rigid tube 5 adopts an integrated bending design and is bent into a corresponding shape according to the shape of the irregular nylon tube 1. The semi-planed metal rigid tube 5 includes a full circular section 53, an irregular shaping section 51, and a straight shaping section 52 in sequence. Among them, the irregular shaping section 51 has a groove with a wavy shape, which is conducive to wrapping and positioning the irregular nylon tube 1 and preventing the irregular nylon tube 1 from not fitting the irregular shaping section 51 and failing to meet the shape requirements. The cross-section of the straight shaping section 52 is semi-circular, corresponding to the straight section of the irregular nylon tube 1.

[0021] The metal hose 3 is placed inside the irregular shaping section 51. The metal hose 3 serves to prevent the tube from collapsing. One end of the heated nylon tube is sleeved on the outside of the metal hose 3. The nylon tube is then placed inside the semi-planed metal rigid tube 5 for cooling and shaping, so that the cylindrical nylon tube becomes the irregular nylon tube 1.

[0022] The metal hose 3 has a positioning mechanism at one end, which includes a positioning pin 4 and a locking screw 55. The metal hose 3 is fixedly connected to the positioning pin 4, and the positioning pin 4 is installed inside the circular section 53. At the same time, the side wall of the circular section 53 is provided with a radially extending through hole and an internal thread structure 54. The locking screw 55 is installed on the internal thread structure 54. The front and rear positions of the positioning pin 4 and the metal hose 3 are adjusted by the locking screw 55, thereby adjusting the length of the initial straight section of the shaped nylon tube 1, so as to ensure that the size of the shaped nylon tube 1 is compatible with the corresponding pipe connection structure.

[0023] In one embodiment, such as Figure 3As shown, a clamping mechanism is provided on the outside of the irregularly shaped shaping section 51. The clamping mechanism consists of an arc-shaped pressure plate 6 and a quick-release structure. The arc-shaped pressure plate 6 is connected to the welding platform 9 through the quick-release structure. The arc-shaped pressure plate 6 further prevents the irregularly shaped nylon tube 1 from falling off the irregularly shaped shaping section 51 or prevents the irregularly shaped nylon tube 1 from not fitting the irregularly shaped shaping section 51 and thus not meeting the shape requirements.

[0024] The quick-release structure includes a locking assembly 7 and a pressure rod assembly 8. The pressure rod assembly 8 has a rotating seat 82, a pressure rod 81, and a handle 83 that are fixedly connected to the welding platform. The rotating seat 82 is fixedly connected to the welding platform and rotatably connected to one end of the pressure rod 81. The handle 83 is fixed to the end of the pressure rod 81. The arc-shaped pressure plate 6 is fixedly connected to the middle of the pressure rod 81. By rotating the pressure rod 81, the arc-shaped pressure plate 6 presses down on the irregular section of the irregular nylon tube 1.

[0025] In addition, a locking assembly 7 is provided below the pressure bar 81 near the end of the handle 83. The locking assembly 7 includes a tension spring 72 connected to the welding platform 9, and a hook 71 that cooperates with the pressure bar 81. The hook 71 is connected to the tension spring 72 and is kept locked under the action of the tension spring 72 to prevent loosening.

[0026] The locking component ensures the stability of the pressure bar assembly 8 during operation, preventing the arc-shaped pressure plate 6 from failing to press the irregular nylon tube 1 due to insufficient weight of the pressure bar assembly 8 or accidental release, thus ensuring the shape accuracy of the irregular nylon tube 1.

[0027] In this solution, multiple sets of mold components are linearly arrayed above the welding platform, enabling mass production and increasing production cycle time and quantity. Both the semi-planed metal rigid tubes and flexible metal tubes are made of stainless steel, forming semi-planed stainless steel pipes and stainless steel flexible tubes. Alternatively, copper or aluminum alloy tubes can be used if cost is not a concern, achieving the same shaped nylon tube forming.

[0028] The working principle and process of the nylon tube forming mold of this utility model are briefly described below.

[0029] First, adjust the positioning pin 4 and the front and rear positions of the metal hose 3 according to the length of the initial straight section of the shaped nylon tube 1, and fix them with locking screws 55. Second, put the heated nylon tube onto the metal hose 3, and then press it into the shaped section 51 and the straight section 52 of the semi-planed metal tube 5 in sequence. Then, rotate the pressure rod assembly 8 to drive the arc-shaped pressure plate 6 close to the shaped section 51, and hang the hook 71 on the pressure rod 81 to make the shaped nylon tube 1 fit with the shaped section 51. Then, send the entire mold assembly into the forming furnace for heating, and then cool it to shape the nylon tube into the required shaped tube. Finally, the worker opens the hook 71 and the pressure rod 81 to remove the shaped nylon tube 1 from the metal hose 3 and the semi-planed metal tube 5, completing all the steps.

[0030] This patented technology employs an integrated pipe bending design and a semi-planing machining process. The nylon tube is placed into a molding groove, with one end secured by a locating pin and the other end cut to length using a marking line. During the nylon molding process, one end of the nylon tube is first held against the locating pin, while the remaining pipes are placed into the mold groove along the direction of the stainless steel tube. After heating and cooling in the molding furnace, the nylon tube is removed, achieving rapid pipe shaping.

[0031] By using multiple molds on the same platform, mass production can be achieved, increasing production cycle time and quantity. Precise positioning with locating pins enables rapid forming of nylon tubes; quick-release structures allow for rapid assembly and disassembly, improving efficiency compared to previous forming methods, saving time and costs, and making the process easier and more precise for on-site operators. Furthermore, different diameter nylon tubes can be formed using various pipe diameters.

[0032] The above description is merely a preferred embodiment of this application and is not intended to limit 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 protection scope of this application.

Claims

1. A molding die for a nylon tube, characterized in that, The welding platform (9) is provided with at least one set of mold assemblies, the mold assemblies including: The semi-planed metal rigid tube (5) is an integrally formed bent tube, which includes a full circle section (53), an irregularly shaped section (51) and a straight section (52) in sequence along the forming direction of the nylon tube. Metal flexible hose (3) is disposed inside the irregularly shaped section (51); A positioning mechanism is provided on the entire circular section (53) for adjusting the end position of the metal hose (3).

2. The molding die for the nylon tube according to claim 1, characterized in that, The positioning mechanism includes a positioning pin (4) fixed to the end of the metal hose (3), and an internal thread structure (54) is provided on the side wall of the full circular section (53). The locking screw (55) is screwed into the internal thread structure (54) and abuts against the positioning pin (4) to adjust and lock its axial position.

3. The molding die for the nylon tube according to claim 1, characterized in that, It also includes a pressing mechanism, which is located on the outside of the irregular shaping section (51) and is used to press the nylon tube into the groove of the semi-cut metal tube (5).

4. The molding die for the nylon tube according to claim 3, characterized in that, The pressing mechanism includes an arc-shaped pressure plate (6) and a quick-release structure. The quick-release structure is used to drive the arc-shaped pressure plate (6) to press towards or away from the irregularly shaped shaping section (51). The quick-release structure includes a pressure rod assembly (8) and a locking assembly (7).

5. The molding die for the nylon tube according to claim 4, characterized in that, The pressure bar assembly (8) includes a rotating seat (82) fixedly connected to the welding platform (9), a pressure bar (81) rotatably connected to the rotating seat (82), and a handle (83) located at the end of the pressure bar (81). The arc-shaped pressure plate (6) is fixedly connected to the middle of the pressure bar (81).

6. The molding die for the nylon tube according to claim 5, characterized in that, The locking assembly (7) includes a tension spring (72) connected to the welding platform (9) and a hook (71) connected to the tension spring (72), the hook (71) being used to engage and fix the rod (81) when it is pressed down.

7. The molding die for the nylon tube according to claim 1, characterized in that, The irregularly shaped section (51) has a slot along its wavy direction.

8. The molding die for the nylon tube according to claim 1, characterized in that, The cross-section of the straight shaping section (52) is semi-circular.

9. The molding die for the nylon tube according to claim 1, characterized in that, The welding platform (9) is provided with multiple sets of mold components, which are arranged in a linear array.

10. The molding die for the nylon tube according to any one of claims 1 to 9, characterized in that, The semi-cut metal rigid tube (5) and the metal flexible tube (3) are made of stainless steel, copper or aluminum alloy.

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