CN114474667A

CN114474667A - High-resistance flame-retardant PVC cable production device and use method

Info

Publication number: CN114474667A
Application number: CN202210054824.1A
Authority: CN
Inventors: 康晓风; 哲琴
Original assignee: Haiyan Edson Special Cable Co ltd
Current assignee: Haiyan Edson Special Cable Co ltd
Priority date: 2022-01-18
Filing date: 2022-01-18
Publication date: 2022-05-13
Anticipated expiration: 2042-01-18
Also published as: CN114474667B

Abstract

The invention discloses a high-resistance flame-retardant PVC cable production device and a use method in the technical field of flame-retardant cable production, and the device comprises an extrusion cylinder, wherein the right end of the extrusion cylinder is an extrusion end and is conical, and the upper end and the lower end of the extrusion cylinder are communicated with storage boxes; the pressing speed of the extrusion plate can be changed according to the conveying speed of the wire in the working process, the pressing speed of the extrusion plate determines the speed of the extrusion cylinder for extruding the insulator, so that the wire can be wrapped by the extruded insulator when the conveying speed of the wire is changed, the phenomenon that the extruding speed of the insulator is constant, and when the conveying speed of the wire is changed, the insulator on the surface of the wire is stacked more or stretched less to cause larger diameter change of the wire and possible electric leakage of the wire, so that danger is caused when the wire is used; and two storage boxes can work in turn, which is beneficial to adapting to continuous and uninterrupted work.

Description

High-resistance flame-retardant PVC cable production device and use method

Technical Field

The invention relates to the technical field of flame-retardant cable production, in particular to a high-resistance flame-retardant PVC cable production device and a use method.

Background

The PVC cable material is particles prepared by taking polyvinyl chloride as basic resin, adding inorganic fillers such as a stabilizer, a plasticizer, calcium carbonate and the like, additives such as an auxiliary agent, a lubricant and the like, and mixing, kneading and extruding. The PVC cable material has low price and excellent performance, and plays an important role in the insulation protection materials of electric wires and cables for a long time, at present, the plastic accounts for 91 percent of the coating material, the polyvinyl chloride accounts for 80 percent of the plastic, the polyvinyl chloride is a chlorine-containing polymer, has better flame retardant performance and various performances required by the production and the use of cables, has low price, and is one of the most widely used plastics in the world.

In the prior art, when a cable is produced, a plurality of wires are generally wound to form the cable, the surfaces of the wires and the cable are wrapped with insulating layers, the insulating layers generally extrude a molten insulating layer while conveying the wires, and then are cooled, the cooled insulating layers wrap the wires, but when a molten insulator is extruded, the extrusion speed is generally set manually, the extrusion speed is generally unchanged during work, the change of the conveying speed of the wires can cause the accumulation or the local decrease of the extruded molten insulator, the quality of the produced wires is influenced, and the electric leakage of the wires can be caused.

Based on the technical scheme, the invention designs a high-resistance flame-retardant PVC cable production device and a use method thereof so as to solve the problems.

Disclosure of Invention

The invention aims to provide a high-resistance flame-retardant PVC cable production device and a use method thereof, and aims to solve the problems that in the prior art, when a cable is produced, a plurality of wires are generally wound into the cable, the surfaces of the wires and the cable are coated with an insulating layer, the insulating layer generally extrudes a molten insulating layer while conveying the wires, and then the insulating layer is cooled, the cooled insulating layer wraps the wires, but when a molten insulator is extruded, the extrusion speed is generally set manually, the extrusion speed is generally unchanged during working, the extruded molten insulator is accumulated or locally is less due to the change of the conveying speed of the wires, the quality of the produced wires is influenced, and the wires are subjected to electric leakage.

In order to achieve the purpose, the invention provides the following technical scheme: a high-resistance flame-retardant PVC cable production device comprises an extrusion cylinder, wherein the right end of the extrusion cylinder is an extrusion end, the right end of the extrusion cylinder is conical, the upper end and the lower end of the extrusion cylinder are communicated with storage boxes, the upper ends of the storage boxes are open, the right sides of the two storage boxes are communicated with an adding pipe, the left sides of the two storage boxes are provided with extrusion mechanisms, the extrusion mechanisms can adjust the extrusion speed of a molten insulator according to the wire conveying speed, a switching mechanism is arranged between the two extrusion mechanisms, the switching mechanism is used for switching the other extrusion mechanisms to work after the molten insulator in a single storage box is completely extruded, and the two extrusion mechanisms can alternately and continuously work;

as a further scheme of the invention, the extrusion mechanism comprises an extrusion plate, the extrusion plate is elastically and slidably connected to the inner wall surface of the storage box through a spring, the bottom of the storage box is provided with a plurality of one-way extrusion holes, the left side of the storage box is provided with a abdication groove, a telescopic barrier plate is fixedly connected between the extrusion plate and the bottom of the inner wall of the storage box, the abdication groove can be sealed by the barrier plate, the left side of the extrusion cylinder is fixedly connected with two first mounting plates, a first rotating shaft is rotatably connected between the two first mounting plates, the first rotating shaft penetrates through the first mounting plates at two sides, a roller is fixedly connected to the middle position of the surface of the first rotating shaft, the roller is attached to the surface of a wire, the roller can rotate under the action of the wire, the left side of the storage box is provided with four second mounting plates, and two second rotating shafts are rotatably connected between the four second mounting plates, the two second rotating shafts are respectively positioned at two sides of the abdicating groove, two ends of the surface of the second rotating shaft and the surface of the first rotating shaft are in transmission connection with a first synchronous belt, one end of the two second rotating shafts, which is close to the abdicating groove, is fixedly connected with a first gear, four third mounting plates are arranged at the left side of the storage box corresponding to the abdicating groove, two third rotating shafts are rotatably connected between the four third mounting plates, the two third rotating shafts are respectively positioned at the upper end and the lower end of the abdicating groove, two ends of the upper third rotating shaft are fixedly connected with a second gear, the two second gears are respectively meshed with the two first gears, the surfaces of the two third rotating shafts are in transmission connection with a second synchronous belt, the surfaces of the second synchronous belts are fixedly connected with a pushing plate, and the pushing plate can act on the extrusion plate when moving;

as a further scheme of the invention, the switching mechanism comprises two groups of limiting plates, two groups of limiting plates are arranged in each group, two groups of limiting plates are fixedly connected to the left sides of the two storage boxes respectively, a U-shaped sliding plate is slidably connected between each group of limiting plates from left to right, a first chute is arranged on the left surface of each storage box corresponding to the position of the sliding plate, four second mounting plates and four third mounting plates are fixedly connected to the surface of the sliding plate, a second chute is arranged on the inner wall surface of the first chute, the second chute is communicated with the abdicating groove, two pushing blocks are slidably connected in the second chute, the two pushing blocks are respectively positioned on two sides of the abdicating groove, the left end of each pushing block is an inclined surface, a first connecting rod is fixedly connected between the two pushing blocks, and the pushing plates can act on the first connecting rod, the front end and the rear end of the surface of the extrusion cylinder are jointly and rotatably connected with a switching ring, the upper end and the lower end of the switching ring can swing around a middle rotating point, the two pushing blocks move to act on the switching ring, the upper end and the lower end of the switching ring, which are close to one side of the storage box, are both hinged with second connecting rods, and one ends of the two second connecting rods, which are close to the sliding plate, are both hinged with the sliding plate;

as a further scheme of the invention, a sealing plate is slidably connected to the surface of the inner wall of the storage box, the sealing plate can seal the feeding pipe, a third chute and a fourth chute which are arranged in parallel are formed on one side of the sealing plate close to the feeding pipe, the third chute and the fourth chute are both chutes, a first slide bar is slidably connected to the third chute, a fifth chute is formed on the inner wall of the storage box corresponding to the position of the first slide bar, the first slide bar slides in the fifth chute, the first slide bar extends to the outer side of the sealing plate, the pressing plate moves downwards to act on the first slide bar, a second slide bar is slidably connected to the fourth chute, a sixth chute is formed on the inner wall of the storage box corresponding to the position of the second slide bar, the upper end of the sixth chute penetrates through the inner wall of the storage box, the second slide bar slides in the sixth chute, and the upper end of the second slide bar extends to the upper part of the pressing plate, the upper end of the second sliding rod is bent towards one side close to the extrusion plate, and the extrusion plate moves upwards to act on the second sliding rod;

as a further scheme of the invention, the second chute is a U-shaped groove, the upper end of the second chute extends to the upper side of the storage box, third slide bars are fixedly connected to the upper sides of the two pushing blocks, the two third slide bars slide in the second chute, triangular lifting blocks are fixedly connected to the upper ends of the two third slide bars, and the lifting blocks can act as sliding plates in a moving manner;

as a further scheme of the invention, seventh sliding grooves are formed in one sides, close to the abdicating groove, of the two pushing blocks, the seventh sliding grooves are inclined grooves, and the sliding plate slides in the seventh sliding grooves;

as a further scheme of the invention, the left side of the inner wall of the extrusion cylinder is fixedly connected with a protection cylinder;

a use method of a high-resistance flame-retardant PVC cable production device comprises the following specific steps:

the method comprises the following steps: putting the lead into a production device, and starting the production device;

step two: the wire is then fed to an extrusion device, which melts the insulation and extrudes it as it is fed;

step three: then cooling and drying the conducting wire wrapped with the insulating layer and detecting whether the insulating layer is damaged or not;

step four: finally, a plurality of wires are woven into a cable, and the surface of the cable is coated with a layer of insulator again.

Compared with the prior art, the invention has the beneficial effects that:

1. the pressing speed of the extrusion plate can be changed according to the conveying speed of the wire in the working process, the pressing speed of the extrusion plate determines the speed of the extrusion cylinder for extruding the insulator, so that the wire can be wrapped by the extruded insulator when the conveying speed of the wire is changed, the phenomenon that the extruding speed of the insulator is constant, and when the conveying speed of the wire is changed, the insulator on the surface of the wire is stacked more or stretched less to cause larger diameter change of the wire and possible electric leakage of the wire, so that danger is caused when the wire is used; and two storage boxes can alternate continuous operation, are favorable to adapting to continuous and uninterrupted work, avoid when continuous work, the melting insulator in the storage box is consumed and is accomplished and need shut down the interpolation, influence the working process, and direct interpolation in the course of the work can influence the extrusion capacity to influence the wire quality.

2. According to the wire storage box, the sealing plate, the first sliding rod and the second sliding rod are arranged, so that the quantity of the melting insulator added into the material storage box by the adding pipe can be automatically controlled, the workload of workers is reduced, the uncertainty of injection quantity during manual adding can be avoided, the added melting insulator can flow out of the one-way extrusion hole due to the fact that the adding quantity is large, the quantity of the melting insulator extruded by the extrusion cylinder is influenced, and the quality of wire production is influenced due to the fact that the extrusion plate moves to the bottom of the material storage box due to the fact that the extruding quantity is small.

3. In the working process of the feeding device, the pushing plate can push the first connecting rod and the two pushing blocks to move downwards, the two pushing blocks can drive the third sliding rod and the lifting block to move downwards together, the lifting block can move to the bottom of the sliding plate, the sliding plate can stably slide towards the left side under the action of the switching ring and the lifting block, so that the pushing plate can move out of the abdicating groove and be separated from the extrusion plate, the left side of the sliding plate can be kept vertical when moving, the phenomenon that the sliding plate is inclined due to single-side pulling is avoided, the pushing plate cannot be separated from the extrusion plate, and the phenomenon that the feeding pipe feeds a melting insulator into the material storage box is influenced.

Drawings

FIG. 1 is a flow chart of the method of the present invention;

FIG. 2 is a schematic diagram of the overall structure of the present invention;

FIG. 3 is a schematic view of the present invention taken generally from a first perspective;

FIG. 4 is a schematic view of the structure at A in FIG. 3;

FIG. 5 is a schematic view of the present invention taken generally from a second perspective;

FIG. 6 is a schematic view of the structure at B in FIG. 5;

FIG. 7 is a schematic structural view of the connection between the cartridge and the barrel according to the present invention;

FIG. 8 is a schematic view showing the construction of the sliding panel according to the present invention (hiding the first timing belt at the front side);

FIG. 9 is a schematic view showing the structure of the right side of the sliding plate according to the present invention;

FIG. 10 is a schematic view showing the connection between the slide plate and the switching ring according to the present invention;

FIG. 11 is a schematic view of the structure of FIG. 10 at C;

FIG. 12 is a schematic structural view of the connection relationship between the pushing block, the first connecting rod, the third sliding rod and the lifting block in the present invention;

FIG. 13 is a schematic view of the interior of the magazine of the present invention;

FIG. 14 is a schematic structural view of the position relationship between the fifth chute and the sixth chute of the present invention;

FIG. 15 is a schematic structural view of a sealing plate, a first slide bar and a second slide bar according to the present invention;

FIG. 16 is a schematic view showing the structure of the lower sliding plate in the present invention after it is shifted to be pulled to the left.

In the drawings, the components represented by the respective reference numerals are listed below:

the device comprises an extrusion cylinder 1, a storage box 2, an adding pipe 3, an extrusion plate 4, a spring 5, a one-way extrusion hole 6, a relief groove 7, a blocking plate 8, a first mounting plate 9, a first rotating shaft 10, a roller 11, a second mounting plate 12, a second rotating shaft 13, a first synchronous belt 14, a first gear 15, a third mounting plate 16, a third rotating shaft 17, a second gear 18, a second synchronous belt 19, a pushing plate 20, a limiting plate 21, a sliding plate 22, a first sliding chute 23, a second sliding chute 24, a pushing block 25, a first connecting rod 26, a switching ring 27, a second connecting rod 28, a sealing plate 29, a third sliding chute 30, a fourth sliding chute 31, a first sliding rod 32, a fifth sliding chute 33, a second sliding rod 34, a sixth sliding chute 35, a third sliding rod 36, a lifting block 37, a seventh sliding chute 38 and a protection cylinder 39.

Detailed Description

Referring to fig. 1-16, the present invention provides a technical solution: a high-resistance flame-retardant PVC cable production device comprises an extrusion cylinder 1, wherein the right end of the extrusion cylinder 1 is an extrusion end, the right end of the extrusion cylinder 1 is conical, the upper end and the lower end of the extrusion cylinder 1 are both communicated with storage boxes 2, the upper ends of the storage boxes 2 are open, the right sides of the two storage boxes 2 are both communicated with an addition pipe 3, the left sides of the two storage boxes 2 are both provided with an extrusion mechanism, the extrusion mechanism can adjust the extrusion speed of a molten insulator according to the wire conveying speed, a switching mechanism is arranged between the two extrusion mechanisms, the switching mechanism is used for switching the work of the other extrusion mechanisms after the molten insulator in a single storage box 2 is completely extruded, and the two extrusion mechanisms can alternately and continuously work;

the extruding mechanism comprises an extruding plate 4, the extruding plate 4 is elastically and slidably connected to the surface of the inner wall of the storage box 2 through a spring 5, a plurality of one-way extruding holes 6 are formed in the bottom of the storage box 2, a abdicating groove 7 is formed in the left side of the storage box 2, a telescopic barrier plate 8 is fixedly connected between the extruding plate 4 and the bottom of the inner wall of the storage box 2, the abdicating groove 7 can be sealed by the barrier plate 8, two first mounting plates 9 are fixedly connected to the left side of the extruding cylinder 1, a first rotating shaft 10 is rotatably connected between the two first mounting plates 9, the first rotating shaft 10 penetrates through the first mounting plates 9 at two sides, a roller 11 is fixedly connected to the middle position of the surface of the first rotating shaft 10, the roller 11 is attached to the surface of a wire, the roller 11 can rotate under the action of the wire, four second mounting plates 12 are arranged on the left side of the storage box 2, and two second rotating shafts 13 are rotatably connected between the four second mounting plates 12, the two second rotating shafts 13 are respectively positioned at two sides of the abdicating groove 7, the two ends of the surfaces of the two second rotating shafts 13 and the surface of the first rotating shaft 10 are respectively in transmission connection with a first synchronous belt 14, one end of each of the two second rotating shafts 13, which is close to the abdicating groove 7, is fixedly connected with a first gear 15, four third mounting plates 16 are arranged at the left side of the storage box 2 corresponding to the abdicating groove 7, two third rotating shafts 17 are rotatably connected between the four third mounting plates 16, the two third rotating shafts 17 are respectively positioned at the upper end and the lower end of the abdicating groove 7, two ends of the upper third rotating shaft 17 are respectively and fixedly connected with a second gear 18, the two second gears 18 are respectively meshed with the two first gears 15, the surfaces of the two third rotating shafts 17 are jointly in transmission connection with a second synchronous belt 19, the surface of the second synchronous belt 19 is fixedly connected with a pushing plate 20, and the pushing plate 20 can act on the squeezing plate 4 when moving;

the switching mechanism comprises two groups of limiting plates 21, two groups of limiting plates 21 are arranged in each group, two groups of limiting plates 21 are respectively and fixedly connected to the left sides of two storage boxes 2, a U-shaped sliding plate 22 is connected between each group of limiting plates 21 in a left-right sliding manner, a first sliding chute 23 is formed in the left side surface of each storage box 2 corresponding to the position of the sliding plate 22, four second mounting plates 12 and four third mounting plates 16 are respectively and fixedly connected to the surface of the sliding plate 22, a second sliding chute 24 is formed in the inner wall surface of the first sliding chute 23, the second sliding chute 24 is communicated with the abdicating groove 7, two pushing blocks 25 are connected in the second sliding chute 24 in a sliding manner, the two pushing blocks 25 are respectively positioned on two sides of the abdicating groove 7, the left end of each pushing block 25 is an inclined surface, a first connecting rod 26 is fixedly connected between the two pushing blocks 25, the pushing plate 20 can act on the first connecting rod 26, and the front and rear ends of the surface of the extrusion cylinder 1 are jointly and rotatably connected with a switching ring 27, the upper end and the lower end of the switching ring 27 can swing around a middle rotating point, the two pushing blocks 25 move to act on the switching ring 27, the upper end and the lower end of the switching ring 27, which are close to one side of the storage box 2, are hinged with second connecting rods 28, and one ends of the two second connecting rods 28, which are close to the sliding plate 22, are hinged with the sliding plate 22;

when the cable production device works, the cable production device can convey a wire to move, the wire can penetrate through the extrusion cylinder 1, the two rollers 11 can be attached to the wire, the two rollers 11 and the first rotating shaft 10 can be driven to rotate in the wire conveying process, the first synchronous belt 14 and the second rotating shaft 13 can rotate together, the first gear 15 and the second rotating shaft 13 can rotate together, the second gear 18 and the third rotating shaft 17 can rotate together under the action of the first gear 15, the second synchronous belt 19 and the pushing plate 20 can move together, the pushing plate 20 can move downwards in the abdicating groove 7, the pushing plate 20 can push the extrusion plate 4 to move downwards together, the extrusion plate 4 can extrude a molten insulator in the storage box 2 of the storage box 2 into the extrusion cylinder 1 through the one-way extrusion hole 6, the molten insulator in the extrusion cylinder 1 can be extruded together with the wire from the extrusion end, so that the wire is wrapped, and the pressing speed of the extrusion plate 4 can be changed according to the wire conveying speed, the pressing speed of the extrusion plate 4 determines the speed of the extrusion cylinder 1 for extruding the insulator, so that the extruded insulator can still wrap the wire when the conveying speed of the wire is changed, the phenomenon that the diameter of the wire is changed greatly and the wire is possibly leaked to cause danger when the diameter of the wire is changed greatly and the conveying speed of the wire is changed because the insulator on the surface of the wire is accumulated more or stretched less when the conveying speed of the wire is changed is avoided; when the push plate 20 moves to the bottom of the storage box 2, the push plate 20 pushes the first connecting rod 26, the first connecting rod 26 drives the two push blocks 25 to move downwards together, then the push blocks 25 act on the upper end of the switching ring 27, the switching ring 27 rotates under the action of the push blocks 25, the upper end of the switching ring 27 moves towards the left side, the switching ring 27 pulls the sliding plate 22 to slide towards the left side through the second connecting rod 28, the push plate 20 is separated from the extrusion plate 4, the extrusion plate 4 moves upwards under the action of the spring 5, the adding pipe 3 adds a molten insulator into the storage box 2, when the switching ring 27 rotates, the bottom of the switching ring 27 rotates towards the side close to the storage box 2, the sliding plate 22 is pushed into the first chute 23, the push blocks 25 slide in the second chute 24 under the extrusion of the sliding plate 22, and the push plate 20 moves back into the relief groove 7, the pushing plate 20 can act on the stripper plate 4 again, and two storage boxes 2 can be continuous work in turn, are favorable to adapting to continuous uninterrupted work, avoid when continuous work, and the fused insulator in the storage box 2 consumes and has to be shut down and add, influence the working process, and direct adding in the working process then can influence the extrusion capacity to influence the wire quality.

When the storage box 2 is charged, the charging is generally manually controlled, and a large amount of charging can cause the charged molten insulator to flow out from the one-way extrusion hole 6, as a further scheme of the present invention, a sealing plate 29 is slidably connected to the surface of the inner wall of the storage box 2, the sealing plate 29 can seal the charging pipe 3, one side of the sealing plate 29, which is close to the charging pipe 3, is provided with a third chute 30 and a fourth chute 31 which are arranged in parallel, the third chute 30 and the fourth chute 31 are both chute grooves, the third chute 30 is slidably connected with a first slide bar 32, the inner wall of the storage box 2 is provided with a fifth chute 33 at a position corresponding to the first slide bar 32, the first slide bar 32 slides in the fifth chute 33, the first slide bar 32 extends to the outer side of the sealing plate 29, the extrusion plate 4 moves downwards to act on the first slide bar 32, the fourth chute 31 is slidably connected with a second slide bar 34, the inner wall of the storage box 2 is provided with a sixth chute 35 at a position corresponding to the second slide bar 34, the upper end of the sixth chute 35 penetrates through the inner wall of the storage box 2, the second slide bar 34 slides in the sixth chute 35, the upper end of the second slide bar 34 extends to the upper part of the extrusion plate 4, the upper end of the second slide bar 34 is bent towards one side close to the extrusion plate 4, and the extrusion plate 4 moves upwards to act on the second slide bar 34; when the extrusion plate 4 moves downwards to extrude the fused insulator, when the extrusion plate 4 moves to the bottom of the storage box 2, the extrusion plate 4 can push the first slide bar 32 to move downwards together, the first slide bar 32 can slide in the third chute 30 and the fifth chute 33, the sealing plate 29 can move to one side under the action of the first slide bar 32 and the third chute 30, the second slide bar 34 can slide in the fourth chute 31 and the sixth chute 35 under the action of the sealing plate 29, then the extrusion plate 4 can move upwards under the action of the spring 5, the adding pipe 3 can add the fused insulator into the storage box 2 in the process that the extrusion plate 4 moves upwards, then when the extrusion plate 4 moves to the top of the storage box 2, the extrusion plate 4 can drive the second slide bar 34 to move upwards together, the sealing plate 29 can reseal the adding pipe 3 under the action of the second slide bar 34 and the fourth chute 31, which is beneficial to automatically control the amount of the adding pipe 3 adding the fused insulator into the storage box 2, artificial workload is reduced, uncertainty of injection amount during manual addition can be avoided, the more fused insulation that can lead to adding of addition can flow out from one-way extrusion hole 6, the influence is extruded a 1 volume of extruding fused insulation, extrude less then can lead to the extrusion plate to remove to storage box 2 bottom, the fused insulation that extrudes is less, influences the quality of wire production.

When the switching ring 27 pulls the sliding plate 22 to move leftwards, the sliding plate 22 is inclined due to the single-side pulling of the sliding plate 22, the pushing plate 20 cannot be completely separated from the extrusion plate 4, and the movement of the extrusion plate 4 is affected, as a further scheme of the invention, the second chute 24 is a U-shaped chute, the upper end of the second chute 24 extends to the upper part of the storage box 2, third sliding rods 36 are fixedly connected to the upper parts of the two pushing blocks 25, the two third sliding rods 36 slide in the second chute 24, triangular lifting blocks 37 are fixedly connected to the upper ends of the two third sliding rods 36, and the lifting blocks 37 can act on the sliding plate 22; in the working process, the push plate 20 can push the first connecting rod 26 and the two push blocks 25 to move downwards, the two push blocks 25 can drive the third sliding rod 36 and the lifting block 37 to move downwards together, the lifting block 37 can move to the bottom of the sliding plate 22, the sliding plate 22 can stably slide towards the left side under the action of the switching ring 27 and the lifting block 37, so that the push plate 20 can move out of the abdicating groove 7 and be separated from the extrusion plate 4, the left side of the sliding plate 22 can be kept vertical when moving, the sliding plate 22 is prevented from being inclined due to single-side pulling, the push plate 20 cannot be separated from the extrusion plate 4, and the adding of the melting insulator into the storage box 2 by the adding pipe 3 is influenced.

When the sliding plate 22 moves towards one side close to the storage box 2, the sliding plate 22 needs to extrude the pushing blocks 25 to return to the original position, so that the difficulty in rotating the switching ring 27 is increased, as a further scheme of the invention, the seventh sliding grooves 38 are formed in one sides of the two pushing blocks 25 close to the abdicating groove 7, the seventh sliding grooves 38 are inclined grooves, and the sliding plate 22 slides in the seventh sliding grooves 38; in the working process, the switching ring 27 pushes the sliding plate 22 to move towards the rotating end close to one side of the storage box 2, the pushing block 25 moves under the action of the sliding plate 22 and the seventh sliding groove 38, which is beneficial to reducing the friction force between the sliding plate 22 and the pushing block 25, and avoids the problem that the friction force between the sliding plate 22 and the pushing block 25 is large, which can affect the rotation of the switching ring 27, so that the sliding plates 22 on the two sides can not move to the working position, thereby affecting the normal production work.

When the extrusion cylinder 1 works, the contact area between the wire in the extrusion cylinder 1 and the fused insulator is large, and the conveying speed of the wire is influenced, and as a further scheme of the invention, a protection cylinder 39 is fixedly connected to the left side of the inner wall of the extrusion cylinder 1; when the extrusion cylinder 1 works, the wire can pass through the protection cylinder 39, so that the contact area between the wire and the melting insulator is reduced, the contact area between the wire and the melting insulator is large, and the phenomenon that the conveying speed of the wire is influenced by the viscous insulator, so that the production efficiency is influenced is avoided.

Claims

1. The utility model provides a fire-retardant PVC cable apparatus for producing of high resistance, includes an extrusion section of thick bamboo (1), its characterized in that: the right-hand member of extruding cylinder (1) is for extruding the end and extruding cylinder (1) right-hand member and be the toper, the upper and lower both ends of extruding cylinder (1) all communicate there are storage box (2), the upper end opening of storage box (2), two the right side of storage box (2) all communicates and has add pipe (3), two storage box (2) left side all is equipped with extruding means, extruding means can adjust the extrusion rate of melting insulator according to wire transport speed, two be equipped with switching mechanism between the extruding means, switching mechanism is used for after the melting insulator in single storage box (2) is extruded completely, switches other extruding means work, two extruding means can be continuous operation in turn.

2. The production device of the high-resistance flame-retardant PVC cable according to claim 1, characterized in that: the extruding mechanism comprises an extruding plate (4), the extruding plate (4) is elastically and slidably connected with the inner wall surface of the storage box (2) through a spring (5), a plurality of one-way extruding holes (6) are formed in the bottom of the storage box (2), a yielding groove (7) is formed in the left side of the storage box (2), a telescopic barrier plate (8) is fixedly connected between the extruding plate (4) and the inner wall bottom of the storage box (2), the yielding groove (7) can be sealed by the barrier plate (8), two first mounting plates (9) are fixedly connected to the left side of the extruding cylinder (1), a first rotating shaft (10) is rotatably connected between the two first mounting plates (9), the first rotating shaft (10) penetrates through the first mounting plates (9) on two sides, and idler wheels (11) are fixedly connected to the middle position of the surface of the first rotating shaft (10), the roller (11) is attached to the surface of a wire, the roller (11) can rotate under the action of the wire, the left side of the storage box (2) is provided with four second mounting plates (12), four second mounting plates (12) are rotatably connected with two second rotating shafts (13), the two second rotating shafts (13) are respectively positioned at two sides of the abdicating groove (7), the two surfaces of the second rotating shafts (13) and two ends of the surface of the first rotating shaft (10) are respectively in transmission connection with a first synchronous belt (14), one end of each second rotating shaft (13) close to the abdicating groove (7) is fixedly connected with a first gear (15), the left side of the storage box (2) is provided with four third mounting plates (16) corresponding to the abdicating groove (7), the four third mounting plates (16) are rotatably connected with two third rotating shafts (17), the two third rotating shafts (17) are respectively positioned at the upper end and the lower end of the abdicating groove (7), top the equal fixedly connected with second gear (18), two in both ends of third pivot (17) second gear (18) mesh with two first gears (15) respectively, two the common transmission in third pivot (17) surface is connected with second hold-in range (19), the fixed surface of second hold-in range (19) is connected with slurcam (20), slurcam (20) remove can act on stripper plate (4).

3. The production device of the high-resistance flame-retardant PVC cable according to claim 2, characterized in that: the switching mechanism comprises two groups of limiting plates (21), two groups of limiting plates (21) are arranged in each group, two groups of limiting plates (21) are respectively and fixedly connected to the left sides of the two storage boxes (2), a U-shaped sliding plate (22) is respectively and horizontally slidably connected between the limiting plates (21) in each group, a first chute (23) is formed in the surface of the left side of each storage box (2) corresponding to the position of the sliding plate (22), the four second mounting plates (12) and the four third mounting plates (16) are respectively and fixedly connected to the surface of the sliding plate (22), a second chute (24) is formed in the surface of the inner wall of the first chute (23), the second chute (24) is communicated with the abdicating groove (7), two pushing blocks (25) are slidably connected in the second chute (24), and the two pushing blocks (25) are respectively positioned on two sides of the abdicating groove (7), the left end of each pushing block (25) is an inclined plane, a first connecting rod (26) is fixedly connected between the two pushing blocks (25), the pushing plate (20) can act on the first connecting rods (26), the front end and the rear end of the surface of the extruding cylinder (1) are jointly and rotatably connected with a switching ring (27), the upper end and the lower end of the switching ring (27) can swing around a middle rotating point, the two pushing blocks (25) can move to act on the switching ring (27), the upper end and the lower end, close to one side of the storage box (2), of the switching ring (27) are respectively hinged with a second connecting rod (28), and one end, close to the sliding plate (22), of the two second connecting rods (28) is hinged with the sliding plate (22).

4. The production device of the high-resistance flame-retardant PVC cable according to claim 2, characterized in that: the surface of the inner wall of the storage box (2) is connected with a sealing plate (29) in a sliding manner, the sealing plate (29) can seal the adding pipe (3), one side, close to the adding pipe (3), of the sealing plate (29) is provided with a third sliding chute (30) and a fourth sliding chute (31) which are arranged in parallel, the third sliding chute (30) and the fourth sliding chute (31) are inclined chutes, the third sliding chute (30) is connected with a first sliding rod (32) in a sliding manner, the inner wall of the storage box (2) is provided with a fifth sliding chute (33) corresponding to the position of the first sliding rod (32), the first sliding rod (32) slides in the fifth sliding chute (33), the first sliding rod (32) extends to the outer side of the sealing plate (29), the extrusion plate (4) moves downwards to act on the first sliding rod (32), the fourth sliding chute (31) is connected with a second sliding rod (34) in a sliding manner, the inner wall of the storage box (2) is provided with a sixth sliding chute (35) corresponding to the position of the second sliding rod (34), the upper end of the sixth chute (35) penetrates through the inner wall of the storage box (2), the second sliding rod (34) slides in the sixth chute (35), the upper end of the second sliding rod (34) extends to the upper side of the extrusion plate (4), the upper end of the second sliding rod (34) is bent towards one side close to the extrusion plate (4), and the extrusion plate (4) moves upwards to act on the second sliding rod (34).

5. The production device of the high-resistance flame-retardant PVC cable according to claim 3, characterized in that: the second sliding chute (24) is a U-shaped groove, the upper end of the second sliding chute (24) extends to the upper side of the storage box (2), third sliding rods (36) are fixedly connected to the upper sides of the two pushing blocks (25), the two third sliding rods (36) slide in the second sliding chute (24), triangular lifting blocks (37) are fixedly connected to the upper ends of the two third sliding rods (36), and the lifting blocks (37) move to act on the sliding plates (22).

6. The production device of the high-resistance flame-retardant PVC cable according to claim 3, characterized in that: and seventh sliding grooves (38) are formed in one sides, close to the abdicating grooves (7), of the two pushing blocks (25), the seventh sliding grooves (38) are inclined grooves, and the sliding plate (22) slides in the seventh sliding grooves (38).

7. The production device of the high-resistance flame-retardant PVC cable according to claim 1, characterized in that: the left side of the inner wall of the extrusion cylinder (1) is fixedly connected with a protection cylinder (39).

8. The use method of the high-resistance flame-retardant PVC cable production device is suitable for the high-resistance flame-retardant PVC cable production device of any one of claims 1 to 7, and is characterized in that: the method comprises the following specific steps: