Spiral electrical wiring assembly and preparation method

Abstract

The invention belongs to the technical field of electrical wiring, and particularly relates to a spiral electrical wiring assembly and a preparation method thereof.The spiral electrical wiring assembly comprises a spiral electrical sleeve and a spiral electrical accessory, a plurality of spiral ribs are arranged on the outer surface of the spiral electrical sleeve, and a plurality of first straight ribs are arranged in a socket of the spiral electrical accessory; the spiral electrical sleeve and the spiral electrical accessory are connected in a meshed mode through the spiral rib and the first straight rib. A plurality of spiral ribs are arranged on the outer surface of the spiral electrical casing pipe, a plurality of first straight ribs are arranged in the socket of the spiral electrical accessory, and a plurality of second straight ribs are arranged on the outer surface of the spiral electrical accessory, so that friction between hands of an operator and the electrical casing pipe during installation is increased, and slipping caused by the fact that the outer wall is too smooth is prevented; therefore, people are splashed and injured.

Description

Technical Field

[0001] The present invention belongs to the technical field of electrical wiring, and in particular relates to a spiral electrical wiring component and a preparation method thereof. Background Art

[0002] Currently, there are some significant problems in the design and manufacturing of electrical conduits and electrical accessories widely used in the market. These problems not only affect construction efficiency, but also pose a potential threat to project quality and personnel safety.

[0003] First, in terms of surface properties, existing electrical conduits and accessories are too smooth. This results in low friction between workers' hands and the conduits during installation, making them prone to slipping and increasing the risk of accidental injury. Furthermore, when these conduits are laid with cement mortar, their smooth outer surface reduces the mortar's wrapping and adhesion. This can lead to hollowing caused by the mortar falling off after the wall or floor dries, seriously affecting the stability and aesthetics of the building structure.

[0004] Secondly, regarding physical properties, current electrical conduits and their accessories generally suffer from low structural strength, insufficient compressive and impact resistance, and are prone to breakage during complex operations such as bending. This is particularly problematic due to the inherent limitations of the material, significantly compromising the safe routing of electrical circuits and increasing repair costs and time. More seriously, this fragility can lead to electrical failures over long-term use, even posing safety risks.

[0005] In summary, in view of the shortcomings of existing electrical conduits and electrical accessories in terms of surface characteristics and physical properties, there is an urgent need to develop a new generation of electrical conduits and accessories with a higher friction coefficient to enhance the grip and safety, while having stronger structural strength and excellent pressure and impact resistance, so as to improve construction efficiency, ensure project quality and protect personnel safety.

[0006] In view of this, the present invention is proposed. Summary of the Invention

[0007] In order to solve the technical problems existing in the above-mentioned prior art, the present invention provides a spiral electrical wiring assembly and a preparation method thereof.

[0008] To achieve the above object, the present invention adopts the following technical solutions:

[0009] A spiral electrical wiring assembly includes a spiral electrical conduit and a spiral electrical accessory. The outer surface of the spiral electrical conduit is provided with a plurality of spiral ribs, and the socket of the spiral electrical accessory is provided with a plurality of first straight ribs. The spiral electrical conduit and the spiral electrical accessory are engaged and connected by the spiral ribs and the first straight ribs.

[0010] A plurality of second straight ribs are provided on the outer surface of the spiral electrical fitting.

[0011] The number of the spiral ribs is 24, the number of the first straight ribs is 27, and the number of the second straight ribs is 18.

[0012] The spiral electrical accessories include one of a spiral cup comb body, a spiral external body, a three-pronged spiral command box or a four-pronged spiral command box.

[0013] A cover is provided on one side of the spiral cup comb body, and the cover is threadedly connected to the spiral cup comb body; two groups of first straight ribs are provided in the socket of the spiral external body, and the two groups of first straight ribs are arranged opposite to each other.

[0014] A method for preparing a spiral electrical wiring assembly, characterized by comprising the following steps:

[0015] (1) Production of spiral electrical conduit

[0016] a: Design formula;

[0017] Calcium powder, resin, impact-resistant processing aid and lubricant are selected, wherein the calcium powder includes active calcium, light calcium and nano calcium, and the ratio of calcium powder to resin is (13-16):50; the weight portion of lubricant is 2.5-4.5 parts;

[0018] b: Mix the materials in the formula;

[0019] c: Use twin-screw extruder and spiral die head for extrusion;

[0020] d: Use extended cooling and sizing sleeve and vacuum water tank for cooling and shaping;

[0021] e: Finally, cutting and automatic packaging;

[0022] (3) Production of spiral electrical accessories

[0023] a: Design formula;

[0024] Calcium powder, resin, stabilizer and foaming regulator are selected, wherein the calcium powder includes nano calcium and light calcium, and the ratio of calcium powder to resin is (20-23):50;

[0025] b: Mix the materials in the formula and granulate;

[0026] c: Use injection molding machine and injection mold for injection molding;

[0027] d: Automatic packaging.

[0028] The impact-resistant processing aid and lubricant in step (1) are chlorinated polyethylene as the impact-resistant processing aid and PVC composite lubricant as the lubricant; the formula also includes calcium zinc stabilizer, rutile titanium dioxide and anatase titanium dioxide.

[0029] In the step (2), the stabilizer is a pipe stabilizer; and the formula also includes rutile titanium dioxide.

[0030] In the step (1), the extrusion temperature of the twin-screw extruder is 160-180°C in zone 1, 190-200°C in zone 2, 180-190°C in zone 3, 170-190°C in zone 4, 170-190°C in zone 5, and 190-210°C in die head.

[0031] The speed of the spiral motor of the spiral die head in the step (1) is controlled at 5-25 rpm.

[0032] In step (2), the temperature of the injection molding machine during injection molding is set to 160-170°C in the first section, 180-190°C in the second section, 180-200°C in the third section, 170-190°C in the fourth section, and 150-170°C in the fifth section.

[0033] The specific steps of mixing and granulating the materials in the formula in step (2) are: adding PVC resin powder to a mixer and starting stirring; adding a stabilizer and rutile titanium dioxide in sequence and mixing for 5-8 minutes; then cooling the hot-mixed materials to 40-50° C. and melt-extruding and granulating them using a twin-screw extruder.

[0034] The beneficial effects of the present invention are as follows:

[0035] (1) The present application provides a plurality of spiral ribs on the outer surface of the spiral electrical conduit, a plurality of first straight ribs inside the socket of the spiral electrical fitting, and a plurality of second straight ribs on the outer surface of the spiral electrical fitting, thereby increasing the friction between the operator's hand and the electrical conduit during installation, thereby preventing slipping due to the outer wall being too smooth, thereby preventing injuries to personnel;

[0036] (2) By setting spiral ribs and straight ribs, the surface texture and surface roughness of electrical conduits and electrical accessories are changed. When laid together with cement mortar, the wrapping force and adhesion of the cement mortar can be enhanced, thus preventing the hollowing of the wall or floor caused by the shedding of cement mortar.

[0037] (3) The spiral electrical conduit is inserted into the spiral electrical fittings and connected by the spiral ribs and the first straight ribs, which increases the connection tightness and prevents the two from falling off;

[0038] (4) The spiral electrical wiring assembly disclosed in the present application can enhance its structural strength; in terms of wall thickness, it can also increase the local wall thickness of the electrical wiring assembly, which can make the spiral electrical conduit and spiral electrical accessories have better pressure resistance and impact resistance; when the operator bends the electrical conduit, it can also prevent the pipe from breaking during bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 The structure of the spiral cup comb body in the present invention is shown as follows Figure 1 ;

[0040] Figure 2 The structure of the spiral cup comb body in the present invention is shown as follows Figure 2 ;

[0041] Figure 3 is a cross-sectional view of the spiral cup comb body of the present invention;

[0042] Figure 4 This is a schematic structural diagram of the spiral cup comb body, spiral electrical casing and cover body of the present invention;

[0043] Figure 5 This is a schematic diagram of the connection between the spiral cup comb body, the spiral electrical casing and the cover body in the present invention;

[0044] Figure 6 A top view of the spiral electrical casing of the present invention;

[0045] Figure 7 Schematic diagram of the structure of the helical exosome in the present invention Figure 1 ;

[0046] Figure 8 Schematic diagram of the structure of the helical exosome in the present invention Figure 2 ;

[0047] Figure 9 is a cross-sectional view of the spiral circumscribed body of the present invention;

[0048] Figure 10 Schematic diagram of the structure of the spiral cup comb body and the spiral electrical casing in the present invention;

[0049] Figure 11 This is a schematic diagram of the connection between the spiral cup comb body and the spiral electrical casing in the present invention;

[0050] Figure 12 is a top view of the spiral circumscribed body of the present invention;

[0051] Figure 13 Schematic diagram of the structure of the trident helical command box of the present invention;

[0052] Figure 14This is a schematic diagram of the connection between the three-pronged spiral command box and the spiral electrical conduit in the present invention;

[0053] Figure 15 Schematic diagram of the structure of the four-pronged helical command box in the present invention;

[0054] The numbers are: 1. Spiral electrical conduit; 21. Spiral cup comb body; 22. Spiral external body; 23. Three-pronged spiral command box; 24. Four-pronged spiral command box; 3. Spiral rib; 4. First straight rib; 5. Second straight rib; 6. Cover body. DETAILED DESCRIPTION

[0055] The present invention will be further described below with reference to specific embodiments.

[0056] In the following description, all concepts related to directionality (or orientation) such as up, down, left, right, front and back are referring to the position state of the figure being described. The purpose is to facilitate public understanding, and therefore it cannot be understood as a special limitation on the technical solution provided by the present invention.

[0057] like Figures 1-15 As shown, a spiral electrical wiring assembly includes a spiral electrical conduit 1 and a spiral electrical accessory. The outer surface of the spiral electrical conduit 1 is provided with a plurality of spiral ribs 3, and the interior of the socket of the spiral electrical accessory is provided with a plurality of first straight ribs 4. The spiral electrical conduit 1 and the spiral electrical accessory are connected by the meshing of the spiral ribs 3 and the first straight ribs 4. That is, the spiral electrical conduit 1 is inserted into the spiral electrical accessory and is connected by the meshing of the spiral ribs 3 and the first straight ribs 4. A plurality of second straight ribs 5 are provided on the outer surface of the spiral electrical accessory.

[0058] There are 24 spiral ribs 3, 27 first straight ribs 4, and 18 second straight ribs 5. The outer surface of the spiral electrical fitting has 18 second straight ribs 5, unlike the sleeve for aesthetic reasons; the fitting surface can also be decorated with text and trademarks, so only 18 second straight ribs 5 are provided. The inner surface of the spiral electrical fitting has 27 evenly spaced first straight ribs 4. Because the outer surface of the spiral electrical sleeve 1 has 24 spiral ribs 3, evenly spaced in three equal parts, if evenly spaced along the circumference, there are exactly 24 + 3 = 27 spiral ribs. Therefore, to ensure a good match between the spiral electrical sleeve 1 and the spiral electrical fitting, the spiral electrical fitting has 27 first straight ribs 4 inside.

[0059] The angle between adjacent spiral ribs 3 is 13.33° (e.g. Figure 6 As shown), 24 spiral ribs 3 are evenly distributed along the circumference in three equal parts, with 8 ribs in a group, totaling three groups; the angle between adjacent second straight ribs 5 is 13.33° (as shown Figure 12As shown), 18 second straight ribs 5 are evenly distributed along the circumference in three equal parts, with 6 ribs forming a group, and a total of three groups.

[0060] The spiral electrical accessories include a spiral cup comb body 21, a spiral external body 22, a three-pronged spiral command box 23, or a four-pronged spiral command box 24. A cover body 6 is provided on one side of the spiral cup comb body 21. The cover body 6 is threadedly connected to the spiral cup comb body 21, which improves the sealing performance and enhances the structural stability and connection strength. Two sets of first straight ribs 4 are provided in the socket of the spiral external body 22. The two sets of first straight ribs 4 are arranged opposite to each other (such as Figure 9 As shown), it is convenient for the staff to insert the spiral electrical conduit 1 from both ends of the spiral external body 23.

[0061] A method for preparing a spiral electrical wiring assembly comprises the following steps:

[0062] (1) Production of spiral electrical conduit 1

[0063] a: Design formula;

[0064] Calcium powder, resin, impact-resistant processing aid (chlorinated polyethylene) and lubricant are selected, wherein the calcium powder includes active calcium and light calcium, and the ratio of calcium powder to resin is (13-16):50;

[0065] b: Mix the materials in the formula;

[0066] c: Use twin-screw extruder and spiral die head for extrusion;

[0067] d: Use extended cooling and sizing sleeve and vacuum water tank for cooling and shaping;

[0068] e: Finally, cutting and automatic packaging;

[0069] (2) Production of spiral electrical accessories

[0070] a: Design formula;

[0071] Calcium powder, resin, stabilizer and foaming regulator are selected, wherein the calcium powder includes nano calcium and light calcium, and the ratio of calcium powder to resin is (20-23):50;

[0072] b: Mix the materials in the formula and granulate;

[0073] c: Use injection molding machine and injection mold for injection molding;

[0074] d: Automatic packaging.

[0075] The impact-resistant processing aid and lubricant in step (1) are chlorinated polyethylene as the impact-resistant processing aid and PVC composite lubricant as the lubricant; the formula also includes calcium zinc stabilizer, rutile titanium dioxide and anatase titanium dioxide.

[0076] In step (2), the stabilizer is a pipe stabilizer; the formula also includes rutile titanium dioxide.

[0077] The extrusion temperature of the twin-screw extruder in step (1) is 160-180°C in zone 1, 190-200°C in zone 2, 180-190°C in zone 3, 170-190°C in zone 4, 170-190°C in zone 5, and 190-210°C in die head. The speed of the spiral motor of the spiral die head in step (1) is controlled at 5-25 rpm. The appearance of the specific spiral pattern can be customized according to customer requirements. Generally, the speed is controlled at 8-15 rpm.

[0078] In step (2), the temperature of the injection molding machine during injection molding is set to 160-170°C for the first section, 180-190°C for the second section, 180-200°C for the third section, 170-190°C for the fourth section, and 150-170°C for the fifth section.

[0079] The specific steps of mixing and granulating the materials in the formula in step (2) are as follows: adding PVC resin powder to a mixer and starting stirring; adding a stabilizer and rutile titanium dioxide and other liquid additives in sequence (the main function of titanium dioxide is to increase whiteness and improve appearance quality, and it can also extend the service life of the wire pipe); then cooling the hot-mixed materials to 40-50° C. and using a twin-screw extruder to melt-extrude and granulate them.

[0080] According to the ratio in Table 1, the spiral electrical casing 1 is prepared

[0081] Table 1: Material ratios in the spiral electrical conduit formula

[0082]

[0083]

[0084] The specific operation process is as follows:

[0085] a: Design formula;

[0086] Select 65kg of calcium powder (nano calcium, active calcium and light calcium), 250kg of resin (type 5 resin polyvinyl chloride), 20kg of impact-resistant processing aid (chlorinated polyethylene), 3.5kg of lubricant (PVC composite lubricant) and 3kg of rutile titanium dioxide;

[0087] b: Mix the materials in the formula;

[0088] c: Use twin-screw extruder and spiral die head for extrusion;

[0089] d: Use extended cooling and sizing sleeve and vacuum water tank for cooling and shaping;

[0090] e: Finally, cutting and automatic packaging are carried out.

[0091] The extrusion process of a twin-screw extruder and a spiral die head requires good control of the extrusion molding process, especially the temperature. The temperature during extrusion can fluctuate within the following design values. Specifically, the temperature of zone 1 can be set to 170°C, the temperature of zone 2 to 195°C, the temperature of zone 3 to 185°C, the temperature of zone 4 to 180°C, the temperature of zone 5 to 180°C, and the temperature of the die head to 200°C. In addition, the speed of the spiral motor must be controlled (8-15 rpm). The design of the extended cooling and sizing sleeve is also to prevent the rotating blank from sagging or twisting due to the spiral force and gravity when it is extruded from the die head. Therefore, the use of the extended cooling and sizing sleeve can shorten the distance between the spiral die head and the cooling and shaping device, prevent the wall thickness of the product from being eccentric, and thus play a role in stabilizing production.

[0092] It should be noted that increasing the content of calcium powder in the formula of spiral electrical conduit 1 can enhance the compressive performance and reduce the cost at the same time, but too much calcium powder will also affect the impact performance and bending performance, so it is necessary to fully consider the formula design in production and select the appropriate calcium powder ratio; the addition of impact-resistant processing aids (chlorinated polyethylene) can also improve the impact performance, but it will increase the formula cost and needs to be added as appropriate; it is also necessary to add a suitable proportion of lubricant during production to avoid excessive extrusion pressure.

[0093] According to the ratio in Table 2, spiral electrical accessories were prepared.

[0094] Table 2: Material ratios in the formula of spiral electrical accessories

[0095] raw material Ratio (kg) resin 60-120 calcium powder 24-48 stabilizer 3-6 Foaming regulator 0.3-1.5 Rutile titanium dioxide 1.5-3.5

[0096] The specific operation process of the best embodiment is as follows:

[0097] a: Design formula;

[0098] Select 43kg of calcium powder (nano calcium, calcium hydrogen), 100kg of resin (type 8 resin polyvinyl chloride), 4.8kg of stabilizer (pipe stabilizer), 0.8kg of foaming regulator and 2.5kg of rutile titanium dioxide;

[0099] b: Mix the materials in the formula and granulate;

[0100] c: Use injection molding machine and injection mold for injection molding;

[0101] d: Automatic packaging.

[0102] Specifically, (1) high-speed hot mixing, the equipment adopts a high-speed kneader (500-1000 rpm).

[0103] step:

[0104] Add PVC resin powder into the mixer and start stirring; add stabilizers in sequence and mix for 2 to 3 minutes, then heat to 100 to 120°C to form a pre-plasticized dry mix.

[0105] Key Points:

[0106] Temperature control: Avoid exceeding 120°C to prevent PVC from plasticizing and agglomerating prematurely. Adding order: Add liquid additives first, then solid fillers to ensure uniform dispersion.

[0107] (2) Cooling and mixing: the equipment used is a cold mixer (low-speed stirring).

[0108] Purpose: To cool the hot mixed materials to 40-50℃ to prevent agglomeration and improve fluidity.

[0109] Time: Usually 5 to 10 minutes.

[0110] (3) Melt extrusion granulation, the equipment adopts a twin-screw extruder (length-to-diameter ratio L / D ≥ 32:1, segmented temperature control).

[0111] Temperature segmented control (example): Zone 1 (feeding) Zones 2-3 (melting) Zones 4-5 (homogenization) Die temperature (°C) 120-140 150-170 160-180 170-190.

[0112] Process: The dry blend enters the extruder through a feeder, where it is sheared and melted by the screw. The melt is extruded through a die head into strips, which are then cooled and solidified in a water tank. A pelletizer cuts the strips into pellets with a diameter of 2 to 4 mm.

[0113] Key Points:

[0114] The melt temperature is controlled below 180°C to avoid PVC decomposition (decomposition will cause yellowing and bubbles). The screw speed is adjusted according to the formula. High-filled formulas require a lower speed (e.g., 200-300 rpm).

[0115] (4) Screening and packaging

[0116] Vibrating screen: removes oversized or undersized particles to ensure uniform particle size.

[0117] Packaging: Moisture-proof and sealed (PVC particles are hygroscopic and the moisture content must be less than 0.3%).

[0118] It should be noted that increasing the calcium powder content can reduce costs, but too much calcium powder will also affect the drop performance of accessories. Therefore, it is necessary to fully consider and select the appropriate calcium powder ratio when designing the formula during production. The injection molding machine and injection mold need to control the injection molding process, especially the temperature. The temperature during injection molding can fluctuate within the following design values: the first stage temperature is 165℃, the second stage temperature is 185℃, the third stage temperature is 190℃, the fourth stage temperature is 180℃, and the fifth stage temperature is 160℃.

[0119] The relevant properties of the spiral electrical wiring assembly, namely the spiral electrical conduit 1 and the spiral electrical accessories, prepared according to the ratio provided in the formula design of the optimal embodiment are shown in Table 3.

[0120] Table 3: Test results of physical and mechanical properties, flame retardancy, and electrical performance of spiral electrical conduits and spiral electrical accessories in the best embodiment

[0121]

[0122]

[0123] According to Table 3, the spiral electrical wiring assembly disclosed in the present application has better pressure resistance and impact resistance than existing electrical conduits and electrical accessories, and the spiral electrical wiring assembly disclosed in the present application is anti-airing and easy to grasp.

[0124] Example 1

[0125] Other conditions are the same as the specific operation process for preparing the spiral electrical casing 1 and the spiral electrical accessories in the optimal embodiment, wherein the calcium powder in the spiral electrical casing 1 is selected to be 50kg and the resin is 200kg; the calcium powder in the spiral electrical accessories is selected to be 30kg and the resin is 100kg.

[0126] Example 2

[0127] Other conditions are the same as the specific operation process for preparing the spiral electrical casing 1 and the spiral electrical accessories in the optimal embodiment, wherein the calcium powder in the spiral electrical casing 1 is selected to be 60kg and the resin is 200kg; the calcium powder in the spiral electrical accessories is selected to be 35kg and the resin is 100kg.

[0128] Example 3

[0129] Other conditions are the same as the specific operation process for preparing the spiral electrical casing 1 and the spiral electrical accessories in the optimal embodiment, wherein the calcium powder in the spiral electrical casing 1 is selected to be 65kg and the resin is 200kg; the calcium powder in the spiral electrical accessories is selected to be 40kg and the resin is 100kg.

[0130] Example 4

[0131] Other conditions are the same as the specific operation process for preparing the spiral electrical casing 1 and the spiral electrical accessories in the optimal embodiment, wherein the calcium powder in the spiral electrical casing 1 is selected to be 70kg and the resin is 200kg; the calcium powder in the spiral electrical accessories is selected to be 50kg and the resin is 100kg.

[0132] Example 5

[0133] Other conditions are the same as the specific operation process for preparing the spiral electrical casing 1 and the spiral electrical accessories in the optimal embodiment, wherein the calcium powder in the spiral electrical casing 1 is selected to be 75kg and the resin is 200kg; the calcium powder in the spiral electrical accessories is selected to be 60kg and the resin is 100kg.

[0134] Comparative Example 1

[0135] Other conditions are the same as the specific operation process for preparing the spiral electrical casing 1 and the spiral electrical accessories in the optimal embodiment, wherein the calcium powder in the spiral electrical casing 1 is 85 kg and the resin is 200 kg; the calcium powder in the spiral electrical accessories is 65 kg and the resin is 100 kg.

[0136] Comparative Example 2

[0137] Other conditions are the same as the specific operation process for preparing the spiral electrical casing 1 and the spiral electrical accessories in the optimal embodiment, wherein the calcium powder in the spiral electrical casing 1 is selected to be 95kg and the resin is 200kg; the calcium powder in the spiral electrical accessories is selected to be 70kg and the resin is 100kg.

[0138] Comparative Example 3

[0139] Other conditions are the same as the specific operation process for preparing the spiral electrical casing 1 and the spiral electrical accessories in the optimal embodiment, wherein the calcium powder in the spiral electrical casing 1 is selected to be 105kg and the resin is 200kg; the calcium powder in the spiral electrical accessories is selected to be 75kg and the resin is 100kg.

[0140] Comparative Example 4

[0141] Other conditions are the same as the specific operation process for preparing the spiral electrical casing 1 and the spiral electrical accessories in the optimal embodiment, wherein the calcium powder in the spiral electrical casing 1 is selected to be 40kg and the resin is 200kg; the calcium powder in the spiral electrical accessories is selected to be 80kg and the resin is 100kg.

[0142] Comparative Example 5

[0143] Other conditions are the same as the specific operation process for preparing the spiral electrical casing 1 and the spiral electrical accessories in the optimal embodiment, wherein the calcium powder in the spiral electrical casing 1 is selected to be 30kg and the resin is 200kg; the calcium powder in the spiral electrical accessories is selected to be 85kg and the resin is 100kg.

[0144] Table 4: Test results of the physical and mechanical properties of the spiral electrical conduits in Examples 1 to 5 and Comparative Examples 1 to 5

[0145]

[0146]

[0147] Table 5: Drop performance test results of spiral electrical accessories in Examples 1-5 and Comparative Examples 1-5

[0148] Example Calcium powder (kg) Resin (kg) Drop performance Example 1 30 100 qualified Example 2 35 100 qualified Example 3 40 100 qualified Example 4 50 100 qualified Example 5 60 100 qualified Comparative Example 1 65 100 Unqualified Comparative Example 2 70 100 Unqualified Comparative Example 3 75 100 Unqualified Comparative Example 4 80 100 Unqualified Comparative Example 5 85 100 Unqualified

[0149] According to Table 4, the present invention discloses a spiral electrical conduit 1 and a preparation method thereof, with particular attention paid to its physical and mechanical properties. Through the test results of Examples 1 to 5 and Comparative Examples 1 to 5, we find that the ratio of calcium powder and resin has a significant effect on the compression, impact and bending properties of the conduit. In the embodiment, when the amount of calcium powder is between 50kg and 75kg, and the amount of resin is fixed at 200kg, the spiral electrical conduit 1 shows excellent compression, impact and bending properties, and all tests meet the qualified standards, especially the bending performance is particularly outstanding, without cracks and meets the requirements. However, in the comparative example, too high or too low amount of calcium powder (such as 85kg to 105kg or less than 40kg) will cause at least one performance to be unqualified, especially bending performance and compression resistance are affected. This shows that the optimal ratio of calcium powder and resin is crucial to ensuring the comprehensive physical and mechanical properties of the spiral electrical conduit 1. Therefore, the present invention provides an optimized formula and preparation process to produce a spiral-patterned electrical conduit 1 with excellent physical and mechanical properties, which is suitable for various electrical engineering applications and ensures safety and durability.

[0150] According to Table 5, a kind of spiral type electrical accessories disclosed in the present invention and preparation method thereof, pay special attention to its drop performance.Through the test results of Example 1 to Example 5 and Comparative Example 1 to Comparative Example 5, we find that the ratio of calcium powder and resin has a significant impact on the drop performance of spiral type electrical accessories.In an embodiment, when the calcium powder dosage is between 30kg and 60kg, and the resin dosage is fixed at 100kg, the spiral type electrical accessories shows excellent drop performance, and all tests reach qualified standards.This shows that, adjusting the ratio of calcium powder and resin within this range can effectively enhance the anti-drop ability of spiral type electrical accessories, ensure its reliability and safety in actual application.However, in the comparative example, when the calcium powder dosage exceeds 65kg (such as 65kg to 85kg), although the resin dosage remains unchanged, the drop performance of spiral type electrical accessories is all unqualified.This illustrates that the excessive calcium powder dosage can weaken the structural stability and impact resistance of accessories, causing it to perform poorly in the drop test.

[0151] In summary, the present invention provides an optimized formulation and preparation process. By controlling the optimal ratio of calcium powder to resin, it produces spiral electrical wiring components with excellent drop resistance. This innovation not only improves the product's durability and safety, but also broadens its application in the electrical engineering field, meeting the market demand for high-quality electrical components.

[0152] The present application arranges a number of spiral ribs 3 on the outer surface of the spiral electrical conduit 1, arranges a number of first straight ribs 4 inside the socket of the spiral electrical accessory, and arranges a number of second straight ribs 5 on the outer surface of the spiral electrical accessory, so as to increase the friction between the operator's hands and the electrical conduit during installation, thereby preventing slipping due to the outer wall being too smooth, thereby splashing and injuring people; by arranging the spiral ribs 3 and straight ribs, the surface texture and surface roughness of the electrical conduit and the electrical accessory are changed, and when laid together with cement mortar, the wrapping force and adhesion force of the cement mortar can be enhanced, thereby preventing the hollowing of the wall or the ground caused by the falling off of the cement mortar; and the spiral electrical conduit 1 and the spiral electrical accessory are meshed and connected by the spiral ribs 3 and the first straight ribs 4, thereby increasing the connection tightness and preventing the two from falling off.

[0153] The spiral electrical wiring assembly disclosed in this application enhances its structural strength and increases the local wall thickness of the electrical wiring assembly. This allows the spiral electrical conduit 1 and spiral electrical accessories to have better pressure and impact resistance, and also prevents the conduit from breaking when bending.

[0154] The above content is a further detailed description of the technical solution provided in combination with the preferred implementation methods of the present invention. It cannot be determined that the specific implementation of the present invention is limited to the above descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or replacements without departing from the concept of the present invention, which should be regarded as falling within the scope of protection of the present invention.

Claims

1. A spiral electrical wiring assembly, characterized in that: It includes a spiral electrical sleeve and a spiral electrical accessory. The outer surface of the spiral electrical sleeve is provided with a plurality of spiral ribs. The socket of the spiral electrical accessory is provided with a plurality of first straight ribs. The spiral electrical sleeve and the spiral electrical accessory are meshed and connected by the spiral ribs and the first straight ribs.

2. A spiral electrical wiring assembly according to claim 1, characterized in that: A plurality of second straight ribs are provided on the outer surface of the spiral electrical fitting.

3. A spiral electrical wiring assembly according to claim 2, characterized in that: The number of the spiral ribs is 24, the number of the first straight ribs is 27, and the number of the second straight ribs is 18.

4. The spiral electrical wiring assembly according to claim 1, wherein: The spiral electrical accessories include one of a spiral cup comb body, a spiral external body, a three-pronged spiral command box or a four-pronged spiral command box.

5. The spiral electrical wiring assembly according to claim 4, wherein: A cover is provided on one side of the spiral cup comb body, and the cover is threadedly connected to the spiral cup comb body; two groups of first straight ribs are provided in the socket of the spiral external body, and the two groups of first straight ribs are arranged opposite to each other.

6. A method for preparing a spiral electrical wiring assembly according to claim 1, characterized in that: The steps include: (1) Production of spiral electrical conduit a: Design formula; Calcium powder, resin, impact-resistant processing aid and lubricant are selected, wherein the calcium powder includes active calcium, light calcium and nano calcium, and the ratio of calcium powder to resin is (13-16):50; the weight portion of lubricant is 2.5-4.5 parts; b: Mix the materials in the formula; c: Use twin-screw extruder and spiral die head for extrusion; d: Use extended cooling and sizing sleeve and vacuum water tank for cooling and shaping; e: Finally, cutting and automatic packaging; (2) Production of spiral electrical accessories a: Design formula; Calcium powder, resin, stabilizer and foaming regulator are selected, wherein the calcium powder includes nano calcium and light calcium, and the ratio of calcium powder to resin is (20-23):50; b: Mix the materials in the formula and granulate; c: Use injection molding machine and injection mold for injection molding; d: Automatic packaging.

7. The method for preparing a spiral electrical wiring assembly according to claim 6, wherein: The impact-resistant processing aid and lubricant in step (1) are chlorinated polyethylene, and the lubricant is a PVC composite lubricant; the formula in step (1) also includes a calcium zinc stabilizer, rutile titanium dioxide and anatase titanium dioxide; the stabilizer in step (2) is a pipe stabilizer; the formula in step (2) also includes rutile titanium dioxide.

8. The method for preparing a spiral electrical wiring assembly according to claim 6, wherein: The extrusion temperature of the twin-screw extruder in step (1) is 160-180°C in zone 1, 190-200°C in zone 2, 180-190°C in zone 3, 170-190°C in zone 4, 170-190°C in zone 5, and 190-210°C in die head; the speed of the spiral motor of the spiral die head in step (1) is controlled at 5-25 rpm.

9. The method for preparing a spiral electrical wiring assembly according to claim 6, wherein: In step (2), the temperature of the injection molding machine during injection molding is set to 160-170°C in the first section, 180-190°C in the second section, 180-200°C in the third section, 170-190°C in the fourth section, and 150-170°C in the fifth section.

10. The method for preparing a spiral electrical wiring assembly according to claim 6, wherein: The specific steps of mixing and granulating the materials in the formula in step (2) are: adding PVC resin powder to a mixer and starting stirring; adding a stabilizer and rutile titanium dioxide in sequence and mixing for 5-8 minutes; then cooling the hot-mixed materials to 40-50° C. and melt-extruding and granulating them using a twin-screw extruder.

Images