A flame-retardant wire harness protective sleeve and its preparation method

Abstract

This invention discloses a flame-retardant wire harness protective sleeve, comprising a connecting ring and a protective ring. The connecting ring is glued to one side of the protective ring. The inner cavity of the protective ring has a groove filled with flame-retardant and fire-resistant foam. A connecting strip is fixedly connected to one side of the connecting ring. The inner cavity of the connecting ring has a snap-fit ​​groove. A snap-fit ​​block that abuts against the inner cavity of the snap-fit ​​groove is fixedly connected to one side of the connecting strip. This invention relates to the field of wire harness protective sleeve technology. During installation, the snap-fit ​​block on the surface of the connecting strip is snapped into different snap-fit ​​grooves according to the wire harness size, thus adapting to wire harnesses of various diameters. Furthermore, it can be quickly disassembled by moving the snap-fit ​​block. The cooperation between the connecting ring and the protective ring provides both quick fixation and flame-retardant properties.

Description

Technical Field

[0001] This invention relates to the field of wire harness protective sleeve technology, specifically to a flame-retardant wire harness protective sleeve and its preparation method. Background Technology

[0002] The wiring harness needs to be protected with a protective sleeve to prevent it from being damaged by scratching the sheet metal. Most existing wiring harness protective sleeves are simply rubber sleeves that wrap the harness directly. When the wiring harness is damaged and needs to be replaced, the protective sleeve needs to be cut open with scissors or a blade. However, cutting with scissors or a blade may scratch the wiring harness and cause adverse effects. According to the automotive wiring harness protective sleeve described in patent number CN112436455A, when the protective sleeve is damaged, the clip can be removed from the slot to remove the protective sleeve from the wiring harness without the need to use a knife to peel off the protective sleeve, thus avoiding damage to the wiring harness. However, it is not convenient for fixing the wiring harness, cannot adapt to various sizes of wires, and is inconvenient to peel off due to its own elasticity, with no leverage. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a flame-retardant wire harness protective sleeve and its preparation method, thus solving the aforementioned problems.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a flame-retardant wire harness protective sleeve, comprising a connecting ring and a protective ring, wherein the connecting ring is glued to one side of the protective ring, the inner cavity of the protective ring has a groove, the inner cavity of the groove is filled with flame-retardant and fireproof foam, a connecting strip is fixedly connected to one side of the connecting ring, a snap-fit ​​groove is formed in the inner cavity of the connecting ring, a snap-fit ​​block is fixedly connected to one side of the connecting strip and abuts against the inner cavity of the snap-fit ​​groove, and a toggle block is fixedly connected to the surface of the connecting strip.

[0005] As a further aspect of the present invention: both the connecting ring and the protective ring are made of elastic material, and multiple connecting strips are provided and evenly distributed on the surface of the connecting ring.

[0006] This invention also discloses a method for preparing a flame-retardant wire harness protective sleeve, comprising the following steps;

[0007] Step 1, Injection Molding: The connecting ring and the protective ring are formed separately through a mold, and then the connecting ring is conveyed to the molding equipment;

[0008] Step Two, Connecting Ring Shaping: Position the connecting ring and place it above the extrusion rollers, with its center line between the two rollers. Perform thermoforming on the connecting ring. Start the guide motor to rotate the guide rod, which in turn rotates the extrusion rollers. The two extrusion rollers slide in opposite directions along the arc groove, extruding the connecting ring and forcing it to wrap around the surface of the support cylinder. At this time, the surface of the support cylinder heats up, shaping the connecting ring. Simultaneously, the drive cylinder drives the clamping frame to rise and press against the bottom of the connecting ring, further compressing it and shaping it into its final form.

[0009] As a further aspect of the present invention: the positioning of the connecting ring in step two specifically includes the following steps: placing the formed connecting ring above the extrusion rollers, with the center line located between the two extrusion rollers.

[0010] As a further aspect of the present invention: the thermoforming of the connecting ring in step two includes the following steps: starting the guide motor to drive the guide rod to rotate, which in turn drives the extrusion roller to rotate. The two extrusion rollers slide in opposite directions along the arc groove to extrude the connecting ring, extruding and wrapping the connecting ring around the surface of the support cylinder. At this time, the surface of the support cylinder heats up and shapes the connecting ring. At this time, the drive cylinder drives the snap-fit ​​bracket to rise and abut against the bottom of the connecting ring, extruding and shaping the connecting ring.

[0011] As a further aspect of the present invention: the shaping equipment in step one includes a fixed frame, a winding disc is fixedly connected to the top of the fixed frame, a support cylinder is fixedly connected to the surface of the winding disc, a guide rod is rotatably connected to the back of the winding disc, the guide rod is driven by a guide motor, an arc groove is formed on the surface of the winding disc, a rotating rod is rotatably connected to one end of the guide rod and slidably connected to the inner cavity of the arc groove, an extrusion wheel is fixedly connected to one end of the rotating rod, and an elastic ring is fixedly connected to the surface of the extrusion wheel.

[0012] As a further aspect of the present invention: two extrusion rollers are provided, and they rotate in opposite directions to press and roll the flat connecting ring. A drive cylinder is fixedly connected to the surface of the fixed frame, and a snap-fit ​​bracket is fixedly connected to the top of the piston rod of the drive cylinder. The snap-fit ​​bracket is used to fix the connecting ring.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. In this invention, during installation, the snap-fit ​​blocks on the surface of the connecting strip are snapped into different snap-fit ​​slots according to the size of the wire harness, which can accommodate wire harnesses of various diameters. When removing the wire harness, it can be quickly disassembled by moving the snap-fit ​​block. Furthermore, the cooperation between the connecting ring and the protective ring can provide flame retardancy while quickly fixing the wire harness.

[0015] 2. In this invention, the extrusion rollers rotate and slide in opposite directions along the arc groove to extrude the connecting ring, which is then wrapped around the surface of the support cylinder. At this time, the surface of the support cylinder heats up and shapes the connecting ring. Meanwhile, the drive cylinder drives the snap-fit ​​bracket to rise and abut against the bottom of the connecting ring, extruding the connecting ring and forming it. This allows for the rapid forming of the connecting ring. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the flame-retardant wire harness protective sleeve of the present invention;

[0017] Figure 2 This is a schematic diagram of the connecting ring of the present invention;

[0018] Figure 3 This is a schematic diagram of the protective ring structure of the present invention;

[0019] Figure 4 This is a schematic diagram of the shaping equipment of the present invention;

[0020] Figure 5 This is a rear view of the winding disc of the present invention.

[0021] In the diagram: 1. Connecting ring; 2. Connecting strip; 3. Snap-fit ​​block; 4. Snap-fit ​​groove; 5. Actuating block; 6. Protective ring; 7. Flame-retardant and fireproof foam; 11. Winding reel; 12. Fixed frame; 13. Drive cylinder; 14. Snap-fit ​​bracket; 15. Support cylinder; 16. Guide rod; 17. Guide motor; 18. Rotating rod; 19. Extrusion wheel; 20. Elastic ring; 21. Arc groove. Detailed Implementation

[0022] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0023] Please see Figure 1-5 This invention provides a technical solution: a flame-retardant wire harness protective sleeve and its preparation method, comprising a connecting ring 1 and a protective ring 6. The connecting ring 1 is glued to one side of the protective ring 6. The inner cavity of the protective ring 6 has a groove, and the inner cavity of the groove is filled with flame-retardant and fireproof foam 7. A connecting strip 2 is fixedly connected to one side of the connecting ring 1. A snap-fit ​​groove 4 is opened in the inner cavity of the connecting ring 1. A snap-fit ​​block 3 that abuts against the inner cavity of the snap-fit ​​groove 4 is fixedly connected to one side of the connecting strip 2. A toggle block 5 is fixedly connected to the surface of the connecting strip 2. During installation, the snap-fit ​​block 3 on the surface of the connecting strip 2 is snapped into different snap-fit ​​grooves 4 according to the wire harness size, which can accommodate wire harnesses of various diameters. When removing the wire harness, it can be quickly disassembled by toggling the toggle block 5. The cooperation between the connecting ring 1 and the protective ring 6 can provide flame retardancy while quickly fixing the wire harness.

[0024] Both the connecting ring 1 and the protective ring 6 are made of elastic material. Multiple connecting strips 2 are provided and are evenly distributed on the surface of the connecting ring 1.

[0025] This invention also discloses a method for preparing a flame-retardant wire harness protective sleeve, comprising the following steps;

[0026] Step 1, Injection Molding: The connecting ring 1 and the protective ring 6 are formed by molds respectively, and then the connecting ring 1 is conveyed to the molding equipment;

[0027] Step 2, Shaping the connecting ring 1: Position the connecting ring 1 and place the formed connecting ring 1 above the extrusion rollers 19, with the center line located between the two extrusion rollers 19. Perform thermoforming on the connecting ring 1. Start the guide motor 17 to drive the guide rod 16 to rotate, which in turn drives the extrusion rollers 19 to rotate. The two extrusion rollers 19 slide in opposite directions along the arc groove 21 to extrude the connecting ring 1, extruding and wrapping the connecting ring 1 around the surface of the support cylinder 15. At this time, the surface of the support cylinder 15 heats up and shapes the connecting ring 1. At this time, the drive cylinder 13 drives the snap-fit ​​bracket 14 to rise and abut against the bottom of the connecting ring 1, extruding and shaping the connecting ring 1.

[0028] The positioning of the connecting ring 1 in step two specifically includes the following steps: placing the formed connecting ring 1 above the extrusion roller 19, with the center line located between the two extrusion rollers 19.

[0029] Step two involves thermoforming the connecting ring 1, which includes the following steps: starting the guide motor 17 to drive the guide rod 16 to rotate, which in turn drives the extrusion rollers 19 to rotate. The two extrusion rollers 19 slide in opposite directions along the arc groove 21 to extrude the connecting ring 1, which is then wrapped around the surface of the support cylinder 15. At this time, the surface of the support cylinder 15 heats up and shapes the connecting ring 1. Meanwhile, the drive cylinder 13 drives the snap-fit ​​bracket 14 to rise and abut against the bottom of the connecting ring 1, extruding the connecting ring 1 and forming it.

[0030] The shaping equipment in step one includes a fixed frame 12, a winding disc 11 is fixedly connected to the top of the fixed frame 12, a support cylinder 15 is fixedly connected to the surface of the winding disc 11, a guide rod 16 is rotatably connected to the back of the winding disc 11, the guide rod 16 is driven by a guide motor 17, an arc groove 21 is opened on the surface of the winding disc 11, a rotating rod 18 is rotatably connected to one end of the guide rod 16 and slidably connected to the inner cavity of the arc groove 21, an extrusion roller 19 is fixedly connected to one end of the rotating rod 18, and an elastic ring 20 is fixedly connected to the surface of the extrusion roller 19.

[0031] Two extrusion rollers 19 are provided, and they rotate in opposite directions to press and roll the flat connecting ring 1. A drive cylinder 13 is fixedly connected to the surface of the fixed frame 12. A snap-fit ​​bracket 14 is fixedly connected to the top of the piston rod of the drive cylinder 13. The snap-fit ​​bracket 14 is used to fix the connecting ring 1.

[0032] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A method for preparing a flame-retardant wire harness protective sleeve, characterized in that: The method for preparing the flame-retardant wire harness protective sleeve is used to prepare the flame-retardant wire harness protective sleeve. The flame-retardant wire harness protective sleeve includes a connecting ring (1) and a protective ring (6). The connecting ring (1) is glued to one side of the protective ring (6). The inner cavity of the protective ring (6) is provided with a groove, and the inner cavity of the groove is filled with flame-retardant and fireproof foam (7). A connecting strip (2) is fixedly connected to one side of the connecting ring (1). A snap-fit ​​groove (4) is provided in the inner cavity of the connecting ring (1). A snap-fit ​​block (3) that abuts against the inner cavity of the snap-fit ​​groove (4) is fixedly connected to one side of the connecting strip (2). A toggle block (5) is fixedly connected to the surface of the connecting strip (2). The preparation method of the flame-retardant wire harness protective sleeve includes the following steps; Step 1, Injection Molding: The connecting ring (1) and the protective ring (6) are formed by molds respectively, and then the connecting ring (1) is transported to the molding equipment; Step 2, Shaping of connecting ring (1): Position the connecting ring (1) and perform thermoforming on the connecting ring; The thermoforming of the connecting ring in step two includes the following steps: starting the guide motor (17) to drive the guide rod (16) to rotate, which in turn drives the extrusion wheel (19) to rotate. The two extrusion wheels (19) slide in opposite directions along the arc groove (21) to extrude the connecting ring (1), extruding the connecting ring (1) and wrapping it around the surface of the support cylinder (15). At this time, the surface of the support cylinder (15) heats up and shapes the connecting ring (1). At this time, the drive cylinder (13) drives the snap-fit ​​bracket (14) to rise and abut against the bottom of the connecting ring (1), extruding the connecting ring (1) and forming the connecting ring (1).

2. The method for preparing a flame-retardant wire harness protective sleeve according to claim 1, characterized in that: Both the connecting ring (1) and the protective ring (6) are made of elastic material. Multiple connecting strips (2) are provided and are evenly distributed on the surface of the connecting ring (1).

3. The method for preparing a flame-retardant wire harness protective sleeve according to claim 1, characterized in that: The positioning of the connecting ring (1) in step two specifically includes the following steps: placing the formed connecting ring (1) above the extrusion roller (19), with the center line located between the two extrusion rollers (19).

4. The method for preparing a flame-retardant wire harness protective sleeve according to claim 1, characterized in that: The shaping equipment in step one includes a fixed frame (12), a winding disc (11) is fixedly connected to the top of the fixed frame (12), a support cylinder (15) is fixedly connected to the surface of the winding disc (11), a guide rod (16) is rotatably connected to the back of the winding disc (11), the guide rod (16) is driven by a guide motor (17), an arc groove (21) is opened on the surface of the winding disc (11), a rotating rod (18) is rotatably connected to one end of the guide rod (16) and slidably connected to the inner cavity of the arc groove (21), an extrusion wheel (19) is fixedly connected to one end of the rotating rod (18), and an elastic ring (20) is fixedly connected to the surface of the extrusion wheel (19).

5. The method for preparing a flame-retardant wire harness protective sleeve according to claim 4, characterized in that: Two extrusion rollers (19) are provided and rotate in opposite directions to press and roll the flat connecting ring (1). A drive cylinder (13) is fixedly connected to the surface of the fixed frame (12). A snap-fit ​​bracket (14) is fixedly connected to the top of the piston rod of the drive cylinder (13). The snap-fit ​​bracket (14) is used to fix the connecting ring (1).

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