CN217729612U

CN217729612U - Electromagnetic heating ring for die head of extruder

Info

Publication number: CN217729612U
Application number: CN202122173700.9U
Authority: CN
Inventors: 刘拥军; 苏俊平
Original assignee: Zhejiang Yalante New Material Technology Co ltd
Current assignee: Zhejiang Yalante New Material Technology Co ltd
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2022-11-04
Anticipated expiration: 2031-09-09

Abstract

The utility model provides an extruder die head electromagnetic heating circle, it has solved the uneven scheduling problem of extruder die head heating, it is including the extrusion molding aircraft nose that is the tube-shape, extrusion molding aircraft nose outside cover has a heat conduction section of thick bamboo, the inside heat conduction chamber and the heat conduction intracavity packing that is provided with of heat conduction section of thick bamboo have heat conduction liquid, the heat conduction section of thick bamboo outside is arranged along the axial and distributes and has a plurality of mounting grooves and the relative heat conduction section of thick bamboo circumference of mounting groove to encircle, the mounting groove bottom is coiled there is the vortex induction ring, the vortex induction ring outside is coiled there is the electromagnetic heating circle, the electromagnetic heating circle outside is covered by the lag, vortex induction ring and heat conduction section of thick bamboo distribute and be equipped with temperature sensor. The utility model has the advantages of high discharging quality, stable operation and the like.

Description

Electromagnetic heating ring for die head of extruder

Technical Field

The utility model belongs to the technical field of extruder equipment, concretely relates to extruder die head electromagnetic heating circle.

Background

The screw extruder depends on the pressure and the shearing force generated by the rotation of the screw, so that materials can be fully plasticized and uniformly mixed and are molded through a die head. Plastics extruders can be classified basically into twin-screw extruders, single-screw extruders and, less frequently, multi-screw extruders and also screwless extruders. The formed parts of the extruder are also called extrusion die head and extrusion machine head. The function of this is to distribute the plastic melt from the extruder barrel well in the die runner for extrusion and shaping from the die at a uniform velocity. The shaping action of the extrusion die is critical throughout the extrusion process. However, in the actual use process, the discharging is not smooth. In addition, the electric heating mechanism of the existing extruder die head heats unevenly, so that the discharging quality of the extruder die head is reduced.

In order to solve the defects of the prior art, people have long searched for and put forward various solutions. For example, chinese patent literature discloses a die head for an extruder and an extruder having the same [201721699344.1], which includes a transition block, a tail end of the die head is connected to the transition block, a transition block discharging through hole is formed on the transition block along an axial direction of the extruder, the tail end of the die head includes a material contact surface corresponding to the transition block discharging through hole, a plurality of die head discharging through holes are formed on the die head, a front end of each die head discharging through hole extends to a front end surface of the die head and is opened, and a tail end of each die head discharging through hole communicates with the material contact surface and is opened, wherein the material contact surface is an arc surface recessed toward an inside of the die head, and an axis of the die head discharging through hole is along a radial direction of a spherical surface where the material contact surface is located.

The scheme solves the problem of unsmooth discharging of the extruder to a certain extent, but the scheme still has a plurality of defects, such as uneven heating of materials in the extruder and the like.

Disclosure of Invention

The utility model aims at the above-mentioned problem, provide a reasonable in design, the even extruder die head electromagnetic heating circle of heating.

In order to achieve the above purpose, the utility model adopts the following technical proposal: this extruder die head electromagnetic heating circle, including the extrusion molding aircraft nose that is the tube-shape, extrusion molding aircraft nose outside cover has a heat conduction section of thick bamboo, the inside heat conduction chamber and the heat conduction intracavity packing that is provided with of heat conduction section of thick bamboo have heat-conducting liquid, the heat conduction section of thick bamboo outside is arranged to distribute along the axial and is had a plurality of mounting grooves and the relative heat conduction section of thick bamboo circumference of mounting groove to encircle, the mounting groove bottom is coiled there is the vortex induction ring, the vortex induction ring outside is coiled there is the electromagnetic heating circle, the electromagnetic heating circle outside is covered by the lag, vortex induction ring and heat conduction section of thick bamboo distribute and are equipped with temperature sensor. The eddy current induction ring generates heat under the eddy current induction effect, the heat is uniformly conducted by the heat conducting cylinder and the heat conducting liquid inside the heat conducting cylinder, and the temperature is accurately controlled by matching with an independent temperature sensor, so that the discharging effect of the eddy current induction ring is ensured.

In the electromagnetic heating ring of the extruder die head, the end of the extrusion molding machine head is connected with a discharge head through a locking mechanism, and the inner side of the extrusion molding machine head is in a conical surface shape. The inner side of the extrusion molding machine head is a conical surface, so that the material is extruded, and the gaps in the material are reduced.

In foretell extruder die head electromagnetic heating circle, locking mechanism is including setting up the locking step in extrusion molding aircraft nose end department outside, goes out stub bar and the relative one end of extrusion molding aircraft nose and locking step threaded connection, is provided with the sealing washer between locking step and the extrusion molding aircraft nose inboard. Locking mechanism improves the leakproofness of being connected of stub bar and extrusion molding aircraft nose.

In the above electromagnetic heating ring for the extruder die head, the center of the discharging head is provided with a discharging hole, the outer side of the discharging hole is provided with a discharging barrel, and a plurality of radiating fins are distributed on the discharging barrel along the circumferential direction. The discharge barrel realizes quick heat dissipation, ensures that the temperature of the material is quickly reduced, and ensures smooth discharge.

In the extruder die head electromagnetic heating ring, the outer side of the heat conducting cylinder is sleeved with a plurality of limiting rings, an axial limiting mechanism is arranged between the limiting rings and the heat conducting cylinder, and the mounting groove is positioned between the limiting rings. The limiting ring separates the eddy current induction ring from each other, and the eddy current induction ring and the electromagnetic heating ring are convenient to assemble and fix.

In the above-mentioned extruder die head electromagnetic heating ring, the axial stop mechanism includes the stopper of fixed heat conduction section of thick bamboo outside, and the spacing inslot side is opened and is supplied the spacing groove that the stopper passed, and spacing inslot side is opened and is supplied the stopper to rotate the spacing breach that the card is gone into. The axial limiting mechanism realizes the axial fixation of the limiting ring, and the disassembly and the assembly are simpler and more convenient.

In foretell extruder die head electromagnetic heating circle, the lag includes the main cover body and the auxiliary cover body, and the main cover body is symmetrical with the relative extrusion molding aircraft nose center axis of auxiliary cover body, passes through screw thread spare fixed connection between the main cover body and the auxiliary cover body limit mouth. The protection sleeve plays a role in protecting the eddy current induction ring and the electromagnetic heating ring.

In foretell extruder die head electromagnetic heating circle, the lag inboard covers has insulating layer and insulating layer, is provided with fixed slot and fixed bolt between lag and the extrusion molding aircraft nose. The heat insulating layer and the insulating layer effectively reduce heat loss, and simultaneously ensure the electricity utilization safety of the electromagnetic heating ring.

In the extruder die head electromagnetic heating ring, the outer side of the electromagnetic heating ring is coated with a heat insulation sleeve. The heat insulating sleeve avoids the influence of the overhigh temperature of the electromagnetic heating ring on the normal conduction of the electromagnetic heating ring.

In the electromagnetic heating ring of the extruder die head, the eddy current induction ring is formed by winding metal sheets, and conductive paint is coated between the metal sheets. The whole eddy current induction ring is conductive, so that the eddy current induction ring has higher eddy current heating efficiency.

Compared with the prior art, the utility model has the advantages of: the heat conducting cylinder is matched with the plurality of eddy current induction rings, so that the heat is uniformly transferred, and the discharging effect is improved; the heat insulation effect is better, and the use safety is ensured; the discharge head realizes the quick cooling of the material during the discharge, and the discharging smoothness is further improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a structural sectional view of the present invention;

fig. 3 is a partial cross-sectional view of the present invention;

in the figure, an extrusion molding machine head 1, a heat conducting cylinder 2, a heat conducting cavity 21, a mounting groove 22, a limiting ring 23, an eddy current induction ring 3, a metal sheet 31, an electromagnetic heating ring 4, a heat insulating sleeve 41, a protective sleeve 5, a heat insulating layer 51, an insulating layer 52, a fixing groove 53, a fixing bolt 54, a main sleeve body 55, an auxiliary sleeve body 56, a locking mechanism 6, a locking step 61, a sealing ring 62, a discharging head 7, a discharging hole 71, a discharging cylinder 72, a radiating fin 73, an axial limiting mechanism 8, a limiting block 81, a limiting groove 82 and a limiting notch 83.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-3, this extruder die head electromagnetic heating circle, including being the extrusion molding aircraft nose 1 of tube-shape, extrusion molding aircraft nose 1 outside cover has heat conduction section of thick bamboo 2, heat conduction section of thick bamboo 2 inside is provided with heat conduction chamber 21 and heat conduction chamber 21 intussuseption is filled with heat-conducting liquid, heat conduction section of thick bamboo 2 outside is arranged along the axial and is distributed and has a plurality of mounting grooves 22 and the relative heat conduction section of thick bamboo 2 circumference of mounting groove 22 and encircle, the vortex induction ring 3 has been coiled to mounting groove 22 bottom, the electromagnetic heating circle 4 has been coiled in the vortex induction ring 3 outside, the electromagnetic heating circle 4 outside is covered by lag 5, vortex induction ring 3 and heat conduction section of thick bamboo 2 distribute and are equipped with temperature sensor. 4 circular telegrams of electromagnetic heating circle, 3 production heats of vortex induction ring under the vortex effect and monitor its temperature by temperature sensor, and the heat of generation is by heat conduction section of thick bamboo 2 and inside heat conduction liquid uniform conduction to extrusion molding aircraft nose 1 in, and a plurality of vortex induction ring 3 independently generate heat, can realize 2 temperature accurate regulation of heat conduction section of thick bamboo.

Specifically, the end of the extrusion molding machine head 1 is connected with a discharge head 7 through a locking mechanism 6, and the inner side of the extrusion molding machine head 1 is in a conical surface shape. The conical surface at the inner side of the extrusion molding machine head 1 plays a role in compressing materials, and the overall sealing performance is kept through the locking mechanism 6.

Deeply, locking mechanism 6 is including setting up the locking step 61 in extrusion molding aircraft nose 1 end department outside, and the one end that ejection of compact head 7 is relative with extrusion molding aircraft nose 1 and locking step 61 threaded connection is provided with sealing washer 62 between locking step 61 and the extrusion molding aircraft nose 1 inboard. The locking step 61 cooperates with the sealing ring 62 to improve the sealing performance at the joint.

Furthermore, a discharge hole 71 is formed in the center of the discharge head 7, a discharge barrel 72 is arranged outside the discharge hole 71, and a plurality of cooling fins 73 are circumferentially distributed on the discharge barrel 72. The cooling fins 73 keep the temperature of the discharge barrel 72 lower than the internal temperature of the extrusion molding machine head 1, so that the material can be rapidly shaped when extruded conveniently.

Furthermore, a plurality of limiting rings 23 are sleeved on the outer side of the heat conducting cylinder 2, an axial limiting mechanism 8 is arranged between the limiting rings 23 and the heat conducting cylinder 2, and the mounting groove 22 is located between the limiting rings 23. The spacing rings 23 are uniformly arranged on the outer side of the heat conducting cylinder 2, so that the eddy current induction rings 3 and the electromagnetic heating ring 4 can be conveniently separated.

In addition, the axial limiting mechanism 8 comprises a limiting block 81 at the outer side of the fixed heat conducting tube 2, a limiting groove 82 for the limiting block 81 to pass through is formed in the inner side of the limiting ring 23, and a limiting notch 83 for the limiting block 81 to rotate and be clamped in is formed in the inner side of the limiting groove 82. The axial limiting mechanism 8 limits the position of the limiting rings 23 and keeps the distance between the limiting rings 23 equal.

Meanwhile, the protective sleeve 5 comprises a main sleeve body 55 and an auxiliary sleeve body 56, the main sleeve body 55 and the auxiliary sleeve body 56 are symmetrical relative to the central axis of the extrusion molding machine head 1, and the edge openings of the main sleeve body 55 and the auxiliary sleeve body 56 are fixedly connected through threaded parts. The main sleeve body 55 and the auxiliary sleeve body 56 are mutually spliced to play a role in sealing the electromagnetic heating ring 4.

It can be seen that the inside of the protection cover 5 is covered with a heat insulating layer 51 and an insulating layer 52, and fixing grooves 53 and fixing pins 54 are provided between the protection cover 5 and the extrusion head 1. The heat insulation layer 51 and the insulation layer 52 are laminated, so that the eddy current induction ring 3 and the electromagnetic heating coil 4 have long service life.

Obviously, the electromagnetic heating ring 4 is covered with a heat insulating sleeve 41. The heat insulation sleeve 41 further improves the heat insulation effect of the electromagnetic heating ring 4, and avoids the resistance of the electromagnetic heating ring 4 from being improved due to temperature rise.

Preferably, the eddy current induction ring 3 is formed by winding metal sheets 31, and conductive paint is coated between the metal sheets 31. The conductive paint fills the gaps of the metal sheet 31 and the metal particles in the conductive paint ensure that eddy currents are generated properly in the eddy current sensor ring 3.

In summary, the principle of the present embodiment is: the heat that heat-conducting tube 2 generated a plurality of vortex induction rings 3 and electromagnetic heating circle 4 evenly conducts to extrusion molding aircraft nose 1 in, every vortex induction ring 3 is equipped with temperature sensor respectively and controls heat generation through adjusting the electric current size to realize the accurate regulation of 2 temperatures of heat-conducting tube.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the extrusion molding head 1, the heat conducting cylinder 2, the heat conducting cavity 21, the mounting groove 22, the limiting ring 23, the eddy current induction ring 3, the metal sheet 31, the electromagnetic heating ring 4, the heat insulating sleeve 41, the protecting sleeve 5, the heat insulating layer 51, the insulating layer 52, the fixing groove 53, the fixing bolt 54, the main sleeve body 55, the auxiliary sleeve body 56, the locking mechanism 6, the locking step 61, the sealing ring 62, the discharging head 7, the discharging hole 71, the discharging cylinder 72, the heat radiating fin 73, the axial limiting mechanism 8, the limiting block 81, the limiting groove 82, the limiting notch 83 and the like are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides an extruder die head electromagnetic heating circle, is including extrusion molding aircraft nose (1) that is the tube-shape, extrusion molding aircraft nose (1) outside cover have a heat-conducting tube (2), a serial communication port, heat-conducting tube (2) inside be provided with heat-conducting chamber (21) just heat-conducting chamber (21) intussuseption be filled with heat-conducting liquid, heat-conducting tube (2) outside distribute along axial arrangement have a plurality of mounting grooves (22) just mounting groove (22) encircle to heat-conducting tube (2) circumference relatively, mounting groove (22) bottom coil vortex induction ring (3), vortex induction ring (3) outside coil electromagnetic heating circle (4), electromagnetic heating circle (4) outside covered by lag (5), vortex induction ring (3) and heat-conducting tube (2) distribution be equipped with temperature sensor.

2. The electromagnetic heating ring of the extruder die head according to claim 1, characterized in that the end of the extrusion molding head (1) is connected with a discharge head (7) through a locking mechanism (6), and the inner side of the extrusion molding head (1) is conical.

3. The electromagnetic heating ring of the extruder die head according to claim 2, characterized in that the locking mechanism (6) comprises a locking step (61) arranged at the outer side of the end of the extrusion molding head (1), the end of the discharging head (7) opposite to the extrusion molding head (1) is in threaded connection with the locking step (61), and a sealing ring (62) is arranged between the locking step (61) and the inner side of the extrusion molding head (1).

4. The electromagnetic heating ring of the die head of the extruder according to claim 3, wherein a discharge hole (71) is formed in the center of the discharge head (7), a discharge barrel (72) is arranged outside the discharge hole (71), and a plurality of cooling fins (73) are distributed on the discharge barrel (72) in a circumferential arrangement manner.

5. The electromagnetic heating ring for the die head of the extruder according to claim 1, wherein a plurality of limiting rings (23) are sleeved outside the heat conducting cylinder (2), an axial limiting mechanism (8) is arranged between the limiting rings (23) and the heat conducting cylinder (2), and the mounting groove (22) is positioned between the limiting rings (23).

6. The extruder die head electromagnetic heating ring according to claim 5, wherein the axial limiting mechanism (8) comprises a limiting block (81) fixed on the outer side of the heat conducting cylinder (2), a limiting groove (82) for the limiting block (81) to pass through is formed in the inner side of the limiting ring (23), and a limiting notch (83) for the limiting block (81) to be clamped in a rotating manner is formed in the inner side of the limiting groove (82).

7. The electromagnetic heating ring for the die head of the extruder as claimed in claim 1, wherein the protective sleeve (5) comprises a main sleeve body (55) and a sub sleeve body (56), the main sleeve body (55) and the sub sleeve body (56) are symmetrical relative to the central axis of the extrusion molding head (1), and the edge openings of the main sleeve body (55) and the sub sleeve body (56) are fixedly connected through a threaded member.

8. The extruder die head electromagnetic heating coil according to claim 7, characterized in that the inner side of the protective sleeve (5) is covered with a heat insulating layer (51) and an insulating layer (52), and a fixing groove (53) and a fixing bolt (54) are arranged between the protective sleeve (5) and the extrusion molding head (1).

9. The electromagnetic heating ring of the extruder die head according to claim 1, characterized in that the electromagnetic heating ring (4) is coated with a heat insulating sleeve (41).

10. The electromagnetic heating ring of the extruder die head according to claim 1, characterized in that the eddy current induction ring (3) is formed by winding metal sheets (31), and conductive paint is coated between the metal sheets (31).