CN206277632U - A cable layer material layer dispersed extrusion feeding device - Google Patents

Abstract

The utility model discloses a distributed extrusion feeding device for a cable material layer, which comprises a feeder and a spiral feeder arranged at the lower end of the feeder and communicated with the feeder; the feeder comprises a shell, a feeding end and a discharging end are respectively formed at the upper end and the lower end of the shell, movable rotating shafts are arranged between the shell and the feeding end and between the shell and the discharging end, and one of the movable rotating shafts is connected with a driving motor; a cleaning opening is formed in the side wall of the second blanking channel, and a sealing cover is arranged on the cleaning opening; a feeding pipe which is inverted into an L shape integrally and has a circular cross section is arranged on the right side of the spiral feeder; the bottom end of the feeding pipe is connected with a feed inlet of a double-screw extruder, a fan is further arranged on the outer side of the left side of the feeding pipe, a rotating shaft is arranged in the pipe in the vertical direction of the feeding pipe, a scraper is welded on the rotating shaft, and the rotating shaft is further connected with a motor arranged on the outer side of the top of the feeding pipe.

Description

A cable layer material layer dispersed extrusion feeding device

technical field

The utility model relates to the technical field of electric cable manufacturing, in particular to a cable layer material layer distributed extrusion feeding device.

Background technique

Plastic extruder is also one of the types of plastic machinery. According to the flow direction of the head and the angle between the centerline of the screw, the extruder can divide the head into a right-angle head and an oblique head. The shell of the machine head is generally fixed on the fuselage with bolts. The mold inside the machine head contains a core seat, which is then fixed to the inlet port of the machine head with a nut. The core seat is also equipped with a The mold core, and the center of the mold core and the mold core seat have holes, which are used to pass the core wire. According to the different types of pressurization, the extrusion process can be divided into continuous extrusion and intermittent extrusion. The equipment used in the former is a screw extruder, and the equipment in the latter is a plunger extruder. Here, screw extruders can be roughly classified into single-screw extruders and multi-screw extruders by virtue of the number of screws.

The insulation layer of wire and cable is generally made of modified polyvinyl chloride material, polyvinyl chloride resin, non-polar filler, high-grade modifier and other raw materials are blended and extruded by twin-screw extruder, and the temperature of twin-screw extrusion is generally controlled At 160*~165°C. When raw materials such as polyvinyl chloride resin enter the twin-screw extruder from the hopper, the polyvinyl chloride resin is softened due to high temperature, and it is easy to adhere to the feeding port, resulting in uneven feeding, and even blocking the material to affect extrusion. Moreover, the moisture carried in the raw material is evaporated by the high temperature at the feeding port and then condenses when it meets the cold raw material, which makes feeding difficult.

Utility model content

The purpose of this utility model is to provide a cable layer material layer dispersed extrusion feeding device to solve the problems raised in the above background technology.

In order to achieve the above object, the utility model provides the following technical solutions:

A cable layer material layer dispersed extrusion feeding device, including a feeder and a screw feeder arranged at the lower end of the feeder and communicating with it; the feeder includes a shell, at the upper and lower ends of the shell A feed end and a discharge end are respectively formed, and a movable shaft is provided between the housing and the feed end and the discharge end, and one of the movable shafts is connected to the drive motor; the inside of the housing forms a The first cavity communicated with the end, and the second cavity communicated with the discharge end, the inside of the first cavity is provided with a first distribution feed ring and a second distribution feed ring, in the first cavity A plurality of distribution grooves are formed on the inner walls around the cavity, and horizontal distribution strips are arranged at the bottom of the distribution grooves, and the distribution grooves communicate with the second cavity; on the right side of the screw feeder, there is an inverted whole in the shape of " L"-shaped feeding pipe with a circular cross-section; the bottom end of the feeding pipe is connected to the feed port of the twin-screw extruder, and a fan is provided on the left side of the feeding pipe. A rotating shaft is arranged in the vertical pipe of the feeding pipe, and a scraper is welded on the rotating shaft, and the rotating shaft is also connected with a motor arranged on the outside of the top of the feeding pipe.

As a further technical solution of the present invention, the first distribution feed ring includes a plurality of first distribution feed bodies arranged in a ring, the first distribution feed bodies are provided with longitudinal slots, and inside the longitudinal slots are Slanted upward first distribution sheet.

As a further technical solution of the utility model, the second distribution feeding ring includes a plurality of second distribution feeding bodies arranged in a ring, and the second distribution feeding bodies are provided with longitudinal slots, and inside the longitudinal slots A second distributing sheet inclined downward is provided.

As a further technical solution of the present invention, at least two grids are arranged in the horizontal direction of the feeding pipe.

As a further technical solution of the present invention, a cooling fin is connected to the upper end of the rotating shaft, and the cooling fin is consistent with the central position of the fan.

Compared with the prior art, on the one hand, during the feeding process of the utility model, the moisture carried in raw materials such as polyvinyl chloride resin is evaporated and floated due to the high temperature at the feed port of the twin-screw extruder, and is affected by the wind force of the upper fan. The feeding pipe is directly blown out, which prevents the condensation of water vapor and makes it difficult for the threaded feeder to discharge. The feeder can effectively disperse the feed material evenly, improve the circulation efficiency, and the use effect is good.

Description of drawings

Fig. 1 is a structural schematic diagram of a cable layer material layer dispersed extrusion feeding device of the present invention.

detailed description

The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

Please refer to Fig. 1, a cable layer material layer dispersion extrusion feeding device, the feeder 1 includes a housing 11, the upper and lower ends of the housing 11 respectively form a feed end 12 and a discharge end 13 , a movable shaft 14 is arranged between the housing 11 and the feed end 12 and the discharge end 13, and one of the movable shafts 14 is connected to the drive motor; the inside of the housing 11 is formed to communicate with the feed end 12 The first cavity 15 of the first cavity 15, and the second cavity 16 communicated with the discharge end 13, the inside of the first cavity 15 is provided with a first distribution feed ring and a second distribution feed ring, at the A plurality of distribution grooves 17 are formed on the inner wall around the cavity 15, and horizontal distribution strips 18 are arranged at the bottom of the distribution grooves 17. The distribution grooves 17 communicate with the second cavity 16, and the first distribution feeding ring includes multiple A first distribution feed body 19 arranged in a ring, the first distribution feed body 19 is provided with a longitudinal slot 111, and a first distribution sheet inclined upward is arranged in the longitudinal slot 111; the second distribution feed body The material ring includes a plurality of second distribution feed bodies 112 arranged in a ring, and the second distribution feed body 112 is provided with a longitudinal slot 110, and a second distribution sheet inclined downward is provided in the longitudinal slot 110; The number of distribution sheets on the first distribution feed body 19 is 3, and the number of distribution sheets on the second distribution feed body 112 is 2.

In the actual operation process, the material enters from the feed end 12, passes through the first cavity 15 and the second cavity 16, and finally exits from the discharge end 13; when the material enters the first cavity 15, the entire shell will be affected by the The driving motor drives the movable rotating shaft 14 to rotate at a high speed, so that the material will be chopped by the first distribution feed ring and the second distribution feed ring in the first cavity 15, and the condensed material blocks are evenly distributed, while the first distribution feed ring Both the distribution feed body 19 and the second distribution feed body 112 are provided with longitudinal slots 110, and the distribution body 11 provided on the slots 10 will chop and distribute the materials evenly, and then the materials pass through the distribution slots 17, After passing through the distribution strip 18, the material enters the second cavity 16, and finally the material will be mixed and distributed evenly when it goes out from the discharge end 13;

On the right side of the screw feeder 20, there is provided a feed pipe 3 which is "L" shaped as a whole and has a circular cross section.

The bottom end of the feeding pipe 3 is connected to the feeding port of the twin-screw extruder 4, and a fan 5 is also provided on the left side of the feeding pipe 3, and in the vertical direction of the feeding pipe 3 A rotating shaft 6 is provided, and a scraper 7 is welded on the rotating shaft 6. The rotating shaft 6 is also connected with a motor 8 arranged outside the top of the feeding pipe 3. The polyvinyl chloride resin in the feeder 1, etc. The raw material enters the screw feeder 2 from the bottom, slowly falls into the feeding pipe 3, and then enters the twin-screw extruder 4 for extrusion and granulation. The moisture carried in raw materials such as polyvinyl chloride resin is evaporated due to high temperature, and is blown out of the feeding pipe 3 from the horizontal pipe of the feeding pipe 3 under the action of the fan 5, and the polyvinyl chloride resin adhered to the inner wall of the feeding pipe 3 The powder raw materials enter the twin-screw extruder 4 smoothly due to the action of the scraper 7;

At least two grids 9 are arranged in the pipe of the horizontal direction of the feeding pipe 3 to stop the raw materials from being taken out due to the action of the fan 5 and reduce the harm to the working environment; the scraper 7 and the feeding The gap on the inner wall of the tube 3 is 0.3*1 mm to ensure that the scraper 7 can rotate and work normally in the feeding tube 3 . When the scraper 7 is fully in contact with the inner wall of the feeding pipe 3, due to the adhered substance, the rotation resistance is relatively large.

Since the scraper 7 and the rotating shaft 6 are in the feeding process, due to the heat transfer temperature will increase, a cooling fin 10 is connected to the upper end of the rotating shaft 6, and the central position of the cooling fin 10 is consistent with the fan 5 , the cooling fin 10 is within the scope of action of the fan 5, the heat on the scraper 7 and the rotating shaft 6 is taken out of the feeding pipe 3 by the wind due to the cooling fin 10, which reduces the temperature of the scraper 7 and the rotating shaft 6 itself, preventing Raw materials such as polyvinyl chloride resin are adhered on the scraper 7 and the rotating shaft 6 .

In the utility model, an inverted "L"-shaped feeding pipe is arranged between the screw feeder and the feeding port of the twin-screw extruder, and a fan is arranged on the left side of the feeding pipe, and a scraper is arranged in the feeding pipe. During the feeding process, the moisture carried in raw materials such as polyvinyl chloride resin evaporates and floats up due to the high temperature at the feed inlet of the twin-screw extruder, and is directly blown out of the feeding pipe by the wind force of the upper fan to prevent water vapor from condensing. The screw feeder is difficult to discharge. On the other hand, the setting of the feeder has achieved good anti-blocking treatment for the early entry of materials during use.

The preferred implementation of this patent has been described in detail above, but this patent is not limited to the above-mentioned implementation. Within the scope of knowledge of those of ordinary skill in the art, various implementations can be made without departing from the purpose of this patent. kind of change.

Claims (5)

1. A cable layer material layer dispersed extrusion feeding device, characterized in that it comprises a feeder and a screw feeder arranged at the lower end of the feeder and communicated with it; the feeder includes a housing, The upper and lower ends of the casing form a feed end and a discharge end respectively, and a movable shaft is arranged between the casing, the feed end, and the discharge end, and one of the movable shafts is connected to a driving motor; the inside of the casing A first cavity communicated with the feed end and a second cavity communicated with the discharge end are formed, and a first distribution feed ring and a second distribution feed ring are arranged inside the first cavity A plurality of distribution grooves are formed on the inner wall around the first cavity, horizontal distribution strips are arranged at the bottom of the distribution grooves, and the distribution grooves communicate with the second cavity; There is a feeding tube which is in the shape of an "L" and has a circular cross-section; the bottom end of the feeding tube is connected to the feed port of the twin-screw extruder, and there is a set on the left side of the feeding tube There is a fan, a rotating shaft is arranged in the vertical pipe of the feeding pipe, a scraper is welded on the rotating shaft, and the rotating shaft is also connected with the motor arranged on the outside of the feeding pipe top. 2. A kind of cable layer material layer dispersion extrusion feeding device according to claim 1, characterized in that, the first distribution feed ring comprises a plurality of first distribution feed bodies arranged in a ring, the first The distribution feed body is provided with a longitudinal slot, and a first distribution sheet inclined upward is arranged in the longitudinal slot. 3. A cable layer material layer dispersed extrusion feeding device according to claim 1, characterized in that, the second distribution feed ring comprises a plurality of second distribution feed bodies arranged in a ring, The second distribution feed body is provided with a longitudinal slot, and a second distribution sheet inclined downward is arranged in the longitudinal slot. 4. A cable layer material layer dispersed extrusion feeding device according to claim 1, characterized in that, the second distribution feed ring comprises a plurality of second distribution feed bodies arranged in a ring, The second distribution feed body is provided with a longitudinal slot, and a second distribution sheet inclined downward is arranged in the longitudinal slot. 5. A cable layer material layer dispersed extrusion feeding device according to claim 1, characterized in that a cooling fin is connected to the upper end of the rotating shaft, and the central position of the cooling fin and the fan is be consistent.