A rigid cable magnesium powder filling process

Abstract

The application discloses a rigid cable magnesium powder filling process, which comprises the following steps: S1, a feeding stirrer is used for heating and stirring magnesium oxide powder, so that the dryness and granularity of the powder are maintained; S2, a copper conductor and the magnesium oxide powder enter a steel pipe along a powder storage cavity of a powder filling assembly, a copper strip is wrapped outside the steel pipe, and four copper strip shaping assemblies are used to make the copper strip into a cylindrical copper strip; S3, an argon arc welding gun is used for welding the seam of the copper strip, so that a copper pipe is formed; S4, after the copper conductor and the magnesium oxide powder are separated from the steel pipe, the copper conductor and the magnesium oxide powder are directly filled in the copper pipe; and S5, a ring type vibration machine is used for vibrating and patting the copper pipe, so that the magnesium oxide powder is uniformly vibrated; the rigid cable magnesium powder filling process is simple in operation, different mesh magnesium oxide powders are mixed in proportion, and the ring type vibration machine is used for high-frequency and low-amplitude vibration and patting, so that the magnesium oxide powder can be tightly filled in the copper pipe; the rigid cable magnesium powder filling process can prevent the occurrence of empty packages in the cable and can improve the cable quality and production efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rigid cable manufacturing, in particular to a magnesium powder filling process for rigid cable. BACKGROUND

[0002] BTTZ cable, also known as mineral insulated cable, is a kind of copper sheath wrapped copper conductor core, mainly used for fire, waterproof, corrosion resistance and other effects. In fact, BTTZ cable is made of magnesium oxide powder as inorganic insulating material, which separates the wire and the sleeve, and the outermost layer can be selected according to the needs of the appropriate protective shell. Because all the materials of BTTZ cable are made of inorganic materials, it has many advantages that other cables cannot match, such as this kind of cable cannot be ignited or ignited, and can work normally even in the case of approaching flame, because the melting temperature of copper shell is 1083℃, which plays a role of fire resistance.

[0003] In addition to the basic role of fire resistance, because the mineral insulated cable is protected by metal shell, it cannot make flammable gas, oil vapor, flame and other contact with electrical equipment on the wire, so it also has explosion-proof performance. Compared with the general plastic outer layer wrapped cable, the mineral insulated cable can also bear more than 10 times overload load in carrying capacity.

[0004] Based on these excellent properties of BTTZ cable, it is generally suitable for fire alarm control line below 1000 volts rated voltage, generator room power transmission line, public place lighting line.

[0005] The existing BTTZ cable has the following two problems in the production process: first, the magnesium oxide powder as the filling insulating material has no specific proportioning requirement, resulting in uneven distribution of the existing magnesium oxide powder, insufficient density, and easy to appear gap and empty package after filling into the copper pipe, thereby causing low insulation resistance or short circuit problem; second, the magnesium oxide powder inside the copper pipe cable is filled relatively uniformly by vibration and beating; however, most of the vibration and beating of the copper pipe cable is only through one beating point, or the copper pipe cable is knocked on both sides of the symmetrical point, with large vibration force, so that the magnesium oxide powder cannot be filled densely and is easy to make magnesium powder overflow from the welding joint, resulting in poor welding. SUMMARY

[0006] Therefore, the present application aims to provide a magnesium powder filling process for rigid cable.

[0007] In order to solve the above technical problems, the technical scheme of the present application is as follows: a magnesium powder filling process for rigid cable, which comprises the following steps:

[0008] S1. The magnesium oxide powder is transported, and the magnesium oxide powder is poured into a feeding mixer, the feeding mixer is used to bake the magnesium oxide powder at a temperature of 200-230°C, and the feeding mixer is used to stir the magnesium oxide powder at a stirring speed of 18-22 r / min, so as to keep the dryness and granularity of the magnesium oxide powder, and then the magnesium oxide powder is sent to a powder filling assembly of a copper tube forming machine;

[0009] S2. The copper conductor is inserted, the copper conductor passes through the inside of the steel pipe in the powder filling assembly, the magnesium oxide powder also enters the steel pipe through the powder storage cavity of the powder filling assembly, the copper strip is uniformly transmitted outside the steel pipe, and the copper strip is shaped through four copper strip shaping assemblies of the copper tube forming machine, so that the copper strip is wrapped outside the steel pipe to form a cylindrical copper strip;

[0010] S3. The copper pipe is welded, the cylindrical copper strip is welded through the welding gun at the bottom of the copper strip shaping assembly, and the cylindrical copper strip is welded through the welding gun at the bottom of the copper strip shaping assembly, so as to form the copper pipe;

[0011] S4. The copper pipe is filled, the copper pipe is wrapped outside the steel pipe, the copper conductor and the magnesium oxide powder are penetrated in the steel pipe, and after entering the copper pipe shaping die of the copper tube forming machine, the steel pipe does not enter the copper pipe shaping die, so that the copper conductor and the magnesium oxide powder are directly filled in the copper pipe;

[0012] S5. The copper pipe magnesium oxide powder is vibrated, after the copper pipe shaping die, the copper pipe is subjected to high-frequency low-amplitude vibration through a ring-type vibrator at a position of 1-2 m below the copper tube forming machine, the rotating speed of the vibration motor is 2600-3200 rpm, and the magnesium oxide powder with reasonable thickness ratio is gradually filled and compacted in the copper pipe after being vibrated.

[0013] Preferably, the copper pipe vibration process of the ring-type vibrator comprises the following steps:

[0014] S51, the copper pipe penetrates the ring-type vibrator, the copper pipe passes through the vibration ring of the ring-type vibrator, the vibration motor in the vibration assembly installed on the circular gear plate is started, the vibration motor drives the vibration rod on one side to vibrate, and the vibration ring vibrates and strikes the copper pipe through the vibration rod; and the vibration assembly is installed on the circular gear plate through the fixing seat, and the circular gear plate forms an angle of 30° with the ground;

[0015] S52, the copper pipe is vibrated and struck upward; the driving motor is started to rotate the gear to drive the circular gear plate to rotate, the vibration assembly will rotate with the circular gear plate from the lowest point of the circular gear plate to the highest point of the circular gear plate, in this process, the two groups of telescopic rods in the fixed frame will be gradually elongated to support the vibration assembly to vibrate and strike the copper pipe upward, and when reaching the highest point of the circular gear plate, the elongation of the two groups of telescopic rods reaches the maximum value;

[0016] S53, the copper pipe is beaten by the vibration of the descending; when the moving assembly reaches the highest point of the circular gear plate, the vibration assembly rotates with the circular gear plate from the highest point of the circular gear plate to the lowest point of the circular gear plate, in the process, the two groups of telescopic rods in the fixed frame gradually contract to support the vibration assembly to beat the copper pipe by the vibration of the descending, when reaching the lowest point of the circular gear plate, the contraction amount of the two groups of telescopic rods reaches the maximum value.

[0017] Preferably, the magnesium oxide powder is configured in terms of particle size and proportion as follows: 100 mesh magnesium oxide powder accounts for 25%, 185 mesh magnesium oxide powder accounts for 25%, 240 mesh magnesium oxide powder accounts for 30%, and 325 mesh magnesium oxide powder accounts for 20%.

[0018] The application also provides a ring-type vibration machine for rigid cable magnesium powder filling process, which comprises a support base, a support disc arranged above the support base and forming a 30° angle with the ground, a circular gear plate rotatably mounted above the support disc, a rotating gear fixedly mounted on one side of the support disc and used to drive the rotation of the circular gear plate, a driving motor fixedly mounted at the bottom of the support disc and used to drive the rotation of the rotating gear, a fixed frame mounted above the circular gear plate, and a vibration assembly mounted on the fixed frame.

[0019] Preferably, two groups of telescopic rods are hingedly mounted in the fixed frame, the output ends of the telescopic rods are hingedly connected to one end of the vibration assembly, and the other end of the vibration assembly is hingedly connected to the fixed frame.

[0020] Preferably, the vibration assembly comprises an anti-vibration base, a vibration motor fixedly mounted at the top of the anti-vibration base, a vibration rod mounted on one side of the vibration motor, and a vibration ring welded to one end of the vibration rod and used to vibrate the copper pipe.

[0021] Preferably, the support disc is provided with a mounting groove for mounting the circular gear plate, and the mounting groove is provided with a plurality of ball bearings for supporting the rotation of the circular gear plate.

[0022] The application also provides a copper pipe forming machine for rigid cable magnesium powder filling process, which comprises a stand, four groups of copper belt shaping assemblies arranged on the stand, a powder filling assembly arranged above the four groups of copper belt shaping assemblies, a welding gun arranged below the four groups of copper belt shaping assemblies, and a copper pipe shaping die arranged below the welding gun.

[0023] Preferably, the four sets of copper strip shaping components include a first set of transverse extrusion rollers and a first set of longitudinal extrusion rollers, a second set of transverse extrusion rollers and a second set of longitudinal extrusion rollers disposed below the first set of transverse extrusion rollers and the first set of longitudinal extrusion rollers, a third set of transverse extrusion rollers and a third set of longitudinal extrusion rollers disposed below the second set of transverse extrusion rollers and the second set of longitudinal extrusion rollers, a fourth set of transverse extrusion rollers and a fourth set of longitudinal extrusion rollers disposed below the third set of transverse extrusion rollers and the third set of longitudinal extrusion rollers, and a copper tube shaping mold disposed below the fourth set of transverse extrusion rollers and the fourth set of longitudinal extrusion rollers.

[0024] Preferably, the powder filling assembly includes a powder filling box connected to the feed mixer pipe, a steel pipe fixedly installed below the powder filling box, and a funnel-shaped powder storage cavity inside the powder filling box, which is connected to the steel pipe.

[0025] The main technical effects of this invention are as follows: The rigid cable magnesium powder filling process provided by this invention is simple to operate. By mixing magnesium oxide powder of different mesh sizes in proportion, and then using a ring vibrator with high frequency and low amplitude vibration, the magnesium oxide powder can be filled very tightly inside the copper tube. This eliminates the occurrence of voids inside the cable, which leads to poor insulation, greatly improves cable quality, and increases production efficiency. Attached Figure Description

[0026] Figure 1 This is a structural diagram of a rigid cable magnesium powder filling process according to the present invention;

[0027] Figure 2 for Figure 1 Structural diagram of a medium-ring type vibratory machine;

[0028] Figure 3 for Figure 2 Top view of the central support plate, the circular gear plate, and the rotating gear;

[0029] Figure 4 for Figure 3 Top view of the central support plate;

[0030] Figure 5 for Figure 2 Structural diagram of the retractable telescopic rod inside the central fixed frame;

[0031] Figure 6 for Figure 2 Structural diagram of the extension of the internal telescopic rod of the central fixed frame;

[0032] Figure 7 for Figure 2 Structural diagram of the vibration assembly;

[0033] Figure 8 forFigure 1 Structure diagram of copper pipe forming machine;

[0034] Figure 9 For Figure 8 Top view of middle transverse extrusion roller group;

[0035] Figure 10 For Figure 8 Top view of middle longitudinal extrusion roller group;

[0036] Figure 11 For Figure 8 Top view of middle powder filling assembly. DETAILED DESCRIPTION

[0037] The specific embodiments of the present application are further described in detail below with reference to the accompanying drawings, so that the technical scheme of the present application is easier to understand and master.

[0038] In the present embodiment, it is to be understood that the terms "intermediate", "upper", "lower", "top", "right side", "left end", "upper", "back", "middle", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0039] In addition, in the present specific embodiment, if the connection or fixing manner between the components is not specifically described, the connection or fixing manner can be through bolt fixing or pin fixing commonly used in the prior art, or pin shaft connection, etc. Therefore, in the present embodiment, it is not described in detail.

[0040] A rigid cable magnesium powder filling process, the process comprising the following steps:

[0041] S1. Delivering magnesium oxide powder, pouring the magnesium oxide powder into a dosing blender, the dosing blender baking the magnesium oxide powder at a temperature of 200-230 DEG C, stirring at a stirring speed of 18 r / min-22 r / min to maintain the dryness and granularity of the magnesium oxide powder, and then sending the magnesium oxide powder to the powder filling assembly 23 of the copper pipe forming machine 2;

[0042] S2. Inserting a copper conductor, the copper conductor passing through the inside of the steel pipe 232 in the powder filling assembly 23, the magnesium oxide powder also entering the steel pipe 232 along the powder storage cavity 233 of the powder filling assembly 23, the copper strip being uniformly conveyed outside the steel pipe 232 and passing through the four copper strip shaping assemblies 22 of the copper pipe forming machine 2, so that the copper strip is wrapped around the steel pipe 232 to form a cylindrical copper strip;

[0043] S3. Welding copper pipe, forming a cylindrical copper belt through the copper belt shaping assembly 22 bottom of the welding torch 24 on the cylindrical copper belt gap argon arc welding, and then form a copper pipe;

[0044] S4. Fill the copper pipe, copper pipe wrapped outside the steel pipe 232, copper conductor and magnesium oxide powder through the steel pipe 232 inside, after entering the copper pipe forming machine 2 copper pipe shaping die 25, steel pipe 232 does not enter the copper pipe shaping die 25, so that the copper conductor and magnesium oxide powder directly filled in the copper pipe;

[0045] S5. Vibrate the copper pipe magnesium powder, after the copper pipe shaping die, the ring type vibration machine 1 at the bottom of the copper pipe forming machine 1 m-2 m position of the copper pipe for high frequency low amplitude vibration, the speed of the vibration motor 172 is 2600 rpm-3200 rpm, the reasonable ratio of the magnesium powder is gradually filled and compacted in the copper pipe after vibration.

[0046] The ring type vibration machine for copper pipe vibration process includes the following steps:

[0047] S51, copper pipe through the ring type vibration machine 1, copper pipe through the vibration ring 174 of the ring type vibration machine 1, open the vibration motor 172 installed in the vibration assembly 17 on the circular gear plate 13, the vibration motor 172 drives the vibration rod 173 on one side to vibrate, and the vibration ring 174 is driven by the vibration rod 173 to vibrate and hit the copper pipe; and the vibration assembly 17 is installed on the circular gear plate 13 through the fixed seat 16, and the circular gear plate 13 forms a 30° angle with the ground;

[0048] S52, the copper pipe is vibrated and hit upward; the driving motor 15 is started to rotate the gear 14 to drive the circular gear plate 13 to rotate, and the vibration assembly 17 will rotate with the circular gear plate 13 from the lowest point of the circular gear plate 13 to the highest point of the circular gear plate 13, in the process, the two groups of telescopic rods 161 inside the fixed frame 16 will gradually extend to support the vibration assembly 17 to vibrate and hit the copper pipe upward, and when reaching the highest point of the circular gear plate 13, the extension amount of the two groups of telescopic rods 161 reaches the maximum value;

[0049] S53, the copper pipe is vibrated and hit downward; when the vibration assembly 17 reaches the highest point of the circular gear plate 13, the vibration assembly 17 will rotate with the circular gear plate 13 from the highest point of the circular gear plate 13 to the lowest point of the circular gear plate 13, in the process, the two groups of telescopic rods 161 inside the fixed frame 16 will gradually contract to support the vibration assembly 17 to vibrate and hit the copper pipe downward, and when reaching the lowest point of the circular gear plate 13, the contraction amount of the two groups of telescopic rods 161 reaches the maximum value.

[0050] The magnesium oxide powder is mixed in proportion according to particle size and proportion: 25% of 100 mesh magnesium oxide powder, 25% of 185 mesh magnesium oxide powder, 30% of 240 mesh magnesium oxide powder, and 20% of 325 mesh magnesium oxide powder.

[0051] As shown in Figure 2 The ring type vibration machine 1 comprises a support base 11, a support disc 12 arranged above the support base 11 and forming a 30° angle with the ground, a circular gear disc 13 rotatably mounted above the support disc 12, a rotating gear 14 fixedly mounted on one side of the support disc 12 and used to drive the circular gear disc 13 to rotate, a driving motor 15 fixedly mounted at the bottom of the support disc 12 and used to drive the rotating gear 14 to rotate, a fixing frame 16 mounted above the circular gear disc 13, and a vibration assembly 17 mounted on the fixing frame 15. Specifically, the support disc 12 forms a 30° angle with the ground, so that the fixing frame 16 and the vibration assembly 17 fixed on the circular gear disc 13 will periodically rise and fall with the rotation of the circular gear disc 13.

[0052] As shown in Figures 3-4 The support disc 12 is provided with a mounting groove 121 for mounting the circular gear disc 13, and the mounting groove 121 is provided with a plurality of ball bearings 122 for supporting the rotation of the circular gear disc 13. Specifically, the plurality of ball bearings 122 in the mounting groove 121 form point contact with the circular gear disc 13, which reduces the friction between the circular gear disc 13 and the support disc 12, and the rotating gear 14 can easily drive the circular gear disc 13.

[0053] As shown in Figures 5-6 The inside of the fixing frame 16 is hingedly mounted with two groups of telescopic rods 161, the output end of the telescopic rod 161 is hingedly mounted with one end of the vibration assembly 17, and the other end of the vibration assembly 17 is hingedly mounted with the fixing frame 16. Specifically, the telescopic rod is in a retracted state when the fixing frame 16 is at the lowest point of the support disc, is in an extended state when the fixing frame 16 is at the highest point of the support disc 12, and the telescopic rod 161 gradually extends when moving from the lowest point to the highest point of the support disc 12, and gradually retracts when moving from the highest point to the lowest point of the support disc 12.

[0054] As shown in Figure 7As shown, the vibration assembly 17 includes an anti-vibration base 171, a vibration motor 172 fixedly installed on the top of the anti-vibration base 171, a vibration rod 173 installed on one side of the vibration motor 172, and a vibration ring 174 welded on one end of the vibration rod 173 for vibrating the copper pipe. Specifically, the copper pipe containing the copper conductor and the magnesium oxide powder is passed through the vibration ring 174, and the vibration ring 174 vibrates and strikes the copper pipe under the driving of the vibration motor 172 to shake the magnesium oxide powder in the copper pipe.

[0055] As shown in the figure, Figure 8 The copper pipe forming machine 2 includes a stand 21, four sets of copper strip shaping assemblies 22 arranged on the stand 21, a powder filling assembly 23 arranged above the four sets of copper strip shaping assemblies 22, a welding gun 24 arranged below the four sets of copper strip shaping assemblies 22, and a copper pipe shaping die 25 arranged below the welding gun 24. Specifically, the powder filling assembly 23 is followed by a feeding mixer which fills the powder filling assembly 23 with magnesium oxide powder, and a copper strip coil is arranged behind the powder filling assembly 23. The copper strip is pulled out and arranged on the copper strip shaping assemblies 22.

[0056] The four sets of copper strip shaping assemblies 22 include a first set of transverse extrusion roller groups 221 and a first set of longitudinal extrusion roller groups 222, a second set of transverse extrusion roller groups 223 and a second set of longitudinal extrusion roller groups 224 arranged below the first set of transverse extrusion roller groups 221 and the first set of longitudinal extrusion roller groups 222, a third set of transverse extrusion roller groups 225 and a third set of longitudinal extrusion roller groups 226 arranged below the second set of transverse extrusion roller groups 223 and the second set of longitudinal extrusion roller groups 224, a fourth set of transverse extrusion roller groups 227 and a fourth set of longitudinal extrusion roller groups 228 arranged below the third set of transverse extrusion roller groups 225 and the third set of longitudinal extrusion roller groups 226, and the copper pipe shaping die 25 arranged below the fourth set of transverse extrusion roller groups 227 and the fourth set of longitudinal extrusion roller groups 228.

[0057] Specifically, as shown in the figure, Figure 9 The transverse extrusion roller group is composed of two transverse extrusion rollers, the bottom of the transverse extrusion roller is provided with a sliding block, the inside of the sliding block is provided with a screw rod matched in thread, and the bottom of the sliding block is in contact with the mounting seat for limiting, so that the staff can change the distance between the two transverse extrusion rollers by adjusting the screw rods on both sides of the mounting seat.

[0058] As shown in the figure, Figure 10 The longitudinal extrusion roller group is composed of two longitudinal extrusion rollers, the lower longitudinal extrusion roller is installed between two mounting frames, one side of the upper longitudinal extrusion roller is threadedly connected with the threaded rod inside the mounting frame, and the other side is slidably connected with the sliding rod inside the other mounting frame. The distance between the upper longitudinal extrusion roller and the lower longitudinal extrusion roller is changed by adjusting the threaded rod.

[0059] As shown in Figure 11 The powder filling assembly 23 includes a powder filling box 231 connected with the feeder mixer pipeline, a steel pipe 232 fixedly installed below the powder filling box 231, a funnel-shaped powder storage cavity 233 inside the powder filling box 231, and the powder storage cavity 233 in communication with the steel pipe 232. Specifically, the powder storage cavity 233 is connected with the feeder mixer, can store magnesium oxide powder, is in communication with the steel pipe 232, and the magnesium oxide powder and the copper conductor enter the steel pipe 232 and then enter the copper pipe through the powder storage cavity 233; the length of the steel pipe 232 is from the powder storage cavity 233 to above the copper pipe shaping die 25.

[0060] The technical effect of the present application mainly embodies: the rigid cable magnesium powder filling process provided by the present application is simple to operate, the magnesium oxide powder of different mesh sizes is mixed in proportion, and then the high-frequency and low-amplitude vibration beating of the ring-type vibration machine is added, so that the magnesium oxide powder can be tightly filled in the copper pipe: the empty package in the cable is eliminated, the poor insulation caused by the empty package is eliminated, the cable quality is greatly improved, and the production efficiency is improved.

[0061] Of course, the above is only a typical example of the present application, in addition to this, the present application can have other various specific implementation manners, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of the present application.

Claims

1. A rigid cable magnesium powder filling process characterized by, The process comprises the following steps: S1. Delivering magnesium oxide powder, pouring the magnesium oxide powder into a dosing stirrer, the dosing stirrer baking the magnesium oxide powder at a temperature of 200°C-230°C, stirring at a stirring speed of 18r / min-22r / min, keeping the dryness and granularity of the magnesium oxide powder, and then sending the magnesium oxide powder into the powder filling assembly of the copper tube forming machine; S2. Inserting a copper conductor, the copper conductor passing through the inside of the steel pipe in the powder filling assembly, the magnesium oxide powder also entering the steel pipe through the powder storage cavity of the powder filling assembly, the copper strip being uniformly transmitted outside the steel pipe and being shaped through the four copper strip shaping assemblies of the copper tube forming machine, so that the copper strip is wrapped around the steel pipe to form a cylindrical copper strip; S3. Welding the copper pipe, the cylindrical copper strip being welded through the welding gun at the bottom of the copper strip shaping assembly to form a seam, and then the copper pipe is formed; S4. Filling the copper pipe, the copper pipe being wrapped around the outside of the steel pipe, the copper conductor and the magnesium oxide powder being inserted into the inside of the steel pipe, and after entering the copper pipe shaping die of the copper tube forming machine, the steel pipe does not enter the copper pipe shaping die, so that the copper conductor and the magnesium oxide powder are directly filled in the inside of the copper pipe; S5. Vibration of the copper pipe magnesium oxide powder, after the copper pipe shaping die, the ring type vibrator at the position of 1m-2m below the copper tube forming machine vibrates the copper pipe at a high frequency and a low amplitude, the rotating speed of the vibration motor is 2600rpm-3200rpm, and the magnesium oxide powder with reasonable ratio of thickness is gradually filled and compacted in the copper pipe after being vibrated; In S5, the copper pipe vibration process of the ring type vibrator comprises the following steps: S51, the copper pipe passes through the ring type vibrator, the copper pipe passes through the vibration ring of the ring type vibrator, the vibration motor in the vibration assembly installed on the circular gear plate is turned on, the vibration motor drives the vibration rod on one side to vibrate, and the vibration ring vibrates and hits the copper pipe driven by the vibration rod; and the vibration assembly is installed on the circular gear plate through the fixing seat, and the circular gear plate forms an angle of 30° with the ground; S52, the copper pipe is vibrated and hit upward; the driving motor is turned on to rotate the gear to drive the circular gear plate to rotate, the vibration assembly will rotate with the circular gear plate from the lowest point of the circular gear plate to the highest point of the circular gear plate, in this process, the two groups of telescopic rods in the fixed frame will gradually extend to support the vibration assembly to vibrate and hit the copper pipe upward, and when reaching the highest point of the circular gear plate, the extension amount of the two groups of telescopic rods reaches the maximum value; S53, the copper pipe is vibrated and hit downward; when the vibration assembly reaches the highest point of the circular gear plate, the vibration assembly will rotate with the circular gear plate from the highest point of the circular gear plate to the lowest point of the circular gear plate, in this process, the two groups of telescopic rods in the fixed frame will gradually contract to support the vibration assembly to vibrate and hit the copper pipe downward, and when reaching the lowest point of the circular gear plate, the contraction amount of the two groups of telescopic rods reaches the maximum value; In S1, the magnesium oxide powder is configured in terms of particle size and proportion: 25% of 100-mesh magnesium oxide powder, 25% of 185-mesh magnesium oxide powder, 30% of 240-mesh magnesium oxide powder, and 20% of 325-mesh magnesium oxide powder. The magnesium oxide powder of different sizes is mixed in proportion and stirred uniformly.

2. A rigid electrical cable magnesium powder filling process as claimed in any one of the preceding claims wherein: In S51, the ring-type vibration machine comprises a support base, a support disc arranged above the support base and forming a 30° angle with the ground, a circular gear disc rotatably mounted above the support disc, a rotating gear fixedly mounted on one side of the support disc and used to drive the circular gear disc to rotate, a driving motor fixedly mounted at the bottom of the support disc and used to drive the rotating gear to rotate, and a fixing frame mounted above the circular gear disc, wherein a vibration assembly is mounted on the fixing frame.

3. The rigid cable magnesium powder filling process of claim 2, wherein: Two groups of telescopic rods are hingedly mounted in the fixing frame, one end of each telescopic rod is hingedly connected with one end of the vibration assembly, and the other end of the vibration assembly is hingedly connected with the fixing frame.

4. The rigid cable magnesium powder filling process of claim 2, wherein: The vibration assembly comprises an anti-vibration base, a vibration motor fixedly mounted at the top of the anti-vibration base, a vibration rod mounted on one side of the vibration motor, and a vibration ring welded to one end of the vibration rod and used to vibrate the copper pipe.

5. The rigid cable magnesium powder filling process of claim 2, wherein: The support disc is provided with a mounting groove for mounting the circular gear disc, and the mounting groove is provided with a plurality of ball bearings for supporting the rotation of the circular gear disc.

6. A rigid cable magnesium powder filling process as claimed in any one of the claims wherein: In S5, the copper pipe forming machine comprises a stand, four groups of copper belt shaping assemblies arranged on the stand, a powder filling assembly arranged above the four groups of copper belt shaping assemblies, a welding gun arranged below the four groups of copper belt shaping assemblies, and a copper pipe shaping die arranged below the welding gun.

7. The rigid cable magnesium powder filling process of claim 6, wherein: The four groups of copper belt shaping assemblies comprise a first group of transverse extrusion roller sets and a first group of longitudinal extrusion roller sets, a second group of transverse extrusion roller sets and a second group of longitudinal extrusion roller sets arranged below the first group of transverse extrusion roller sets and the first group of longitudinal extrusion roller sets, a third group of transverse extrusion roller sets and a third group of longitudinal extrusion roller sets arranged below the second group of transverse extrusion roller sets and the second group of longitudinal extrusion roller sets, a fourth group of transverse extrusion roller sets and a fourth group of longitudinal extrusion roller sets arranged below the third group of transverse extrusion roller sets and the third group of longitudinal extrusion roller sets, and a copper pipe shaping die arranged below the fourth group of transverse extrusion roller sets and the fourth group of longitudinal extrusion roller sets.

8. The rigid cable magnesium powder filling process of claim 6, wherein: The powder filling assembly comprises a powder filling box connected with a pipeline of the feeding and stirring machine, a steel pipe fixedly mounted below the powder filling box, a funnel-shaped powder storage cavity in the powder filling box, and the powder storage cavity being in communication with the steel pipe.

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