Thermal shrinkage film melt extruder

Abstract

The utility model discloses a heat shrink film melting extruder which comprises a support, an extrusion pipe is arranged on the front side of the support, an extrusion screw is rotatably connected to the inner wall of the rear side of the extrusion pipe, a hopper is arranged at the upper end of the rear side of the outer cambered surface of the extrusion pipe, and the heat shrink film melting extruder further comprises a melting mechanism. The melting mechanism comprises a melting bin, a mounting shaft, a spiral blade and an inclined blade, the melting bin is rotationally connected to the upper ends of the left inner wall and the right inner wall of the support, the top wall of the melting bin is rotationally connected with the mounting shaft, the spiral blade is arranged on the outer cambered surface of the mounting shaft, an inner barrel is arranged on the bottom wall of the melting bin, and the spiral blade and the inner barrel are arranged in a matched mode; according to the heat shrink film melt extruder, heat shrink film raw materials are efficiently mixed, the layering phenomenon caused by different densities is reduced, the stability of the quality of heat shrink film products is guaranteed, the production efficiency is improved, the production cost is reduced, and the production efficiency is improved. Therefore, the product quality of the thermal shrinkage film is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat shrink film processing technical field, concretely is a kind of heat shrink film melting extruder. BACKGROUND

[0002] Heat shrink film is a kind of plastic film that can shrink and tightly wrap on commodity under heating condition, and the raw material of heat shrink film is usually high molecular polymer, which is stretched and treated in the production process to make molecular chain in oriented stretching state, and the raw material of heat shrink film is usually plastic resin (such as polyethylene, polyolefin, etc.) in the form of particles, the first important role of melting extruder is to heat the solid plastic raw material to above its melting point, so that it changes into molten state, in this process, the rotation of screw plays a key role, the screw rotates in the cylinder, and pushes the plastic particles to move forward, while the heating device outside the cylinder provides heat for the material;

[0003] In the prior art, the patent with the authorized publication number CN 220180076 U discloses a kind of heat shrink film melting extruding mechanism, including: extruder;Feed pipe, the top left side of the extruder is fixedly installed with feed pipe;Melting mechanism, the top of the extruder is provided with melting mechanism, the melting mechanism includes cylinder, support block, melting tank, motor, shaft and stirring paddle, the right side of the extruder top and located feed pipe is fixedly connected with cylinder, the telescopic end of the cylinder is fixedly connected with support block, the left side of the support block is fixedly connected with melting tank, the top center of the melting tank is fixedly connected with motor, the output shaft of the motor is fixedly connected with shaft, the bottom of the shaft penetrates melting tank and extends to the inside of melting tank, the surface of the shaft is fixedly connected with stirring paddle;

[0004] In the above scheme, although the stirring paddle and the cylinder drive the melting tank to shake to play the stirring role, but for some heat shrink film raw materials with complex composition and extremely high requirement on mixing uniformity, the mixing effect may still be unsatisfactory, for example, when the density difference of different additives is large, stratification may occur during stirring, and the single stirring mode of stirring paddle cannot ensure that all raw materials can be fully contacted and mixed, there may be mixing dead angle, leading to uneven mixing of heat shrink film raw materials in some areas, which may cause batch difference of heat shrink film product quality in large-scale production, therefore, we propose a kind of heat shrink film melting extruder. UTILITY MODEL CONTENTS

[0005] The utility model wants to solve the technical problem of overcoming the defects of the prior art, provide a kind of hot shrinkable film melting extruder, the raw material of efficient mixed heat shrinkable film, reduce the occurrence of delamination phenomenon due to different densities, guarantee the stability of heat shrinkable film product quality, to increase the heat shrinkable film product quality, can effectively solve the problems in the background art.

[0006] To realize the above-mentioned purpose, the utility model provides following technical scheme: a kind of hot shrinkable film melting extruder, including support, the front side of the support is equipped with extrusion pipe, the rear side inner wall of extrusion pipe is rotatably connected with extrusion screw, the outer arc surface rear side upper end of extrusion pipe is equipped with hopper, further including melting mechanism;

[0007] Melting mechanism: it includes melting bin, mounting shaft, spiral blade and inclined blade, the left and right inner walls upper end of support is rotatably connected with melting bin, the top wall of melting bin is rotatably connected with mounting shaft, the outer arc surface of mounting shaft is equipped with spiral blade, the bottom wall of melting bin is equipped with inner bucket, spiral blade is cooperatively arranged with inner bucket, the front and back sides of the upper end of mounting shaft outer arc surface are equipped with inclined blade, the raw material of efficient mixed heat shrinkable film, reduce the occurrence of delamination phenomenon due to different densities, guarantee the stability of heat shrinkable film product quality, to increase the heat shrinkable film product quality.

[0008] Further, the right side of the support is equipped with control switch group, the input end of control switch group is electrically connected with external power supply, and is stably controlled.

[0009] Further, the melting mechanism further includes feed pipe and blade, the upper side of the melting bin is equipped with feed pipe, the inner arc surface of feed pipe is equipped with evenly distributed blade, the upper side wall of feed pipe is hingedly connected with the addition door, when raw material enters from the feed pipe, fixed blade will hinder and guide the flow of raw material when passing through feed pipe.

[0010] Further, the melting mechanism further includes filter plate, the discharge port of the lower side wall of the melting bin is equipped with discharge pipe, the inside upper end of the discharge pipe is equipped with filter plate, the middle part of the discharge pipe is connected with electric valve, the input end of electric valve is electrically connected with the output end of control switch group, to facilitate discharging.

[0011] Further, the melting mechanism further includes electric heating wire, the arc-shaped side wall of the melting bin is internally provided with cavity, the inside of the cavity is equipped with electric heating wire, the input end of electric heating wire is electrically connected with the output end of control switch group, for heating.

[0012] Further, the melting mechanism further includes adjusting motor, the adjusting motor is installed on the upper side of the melting bin, the output shaft of adjusting motor is fixedly connected with the upper end surface center of mounting shaft, the input end of adjusting motor is electrically connected with the output end of control switch group, and is stably driven.

[0013] Further, the melting bin and the support are connected through a rotating shaft, a motor is installed on the left side of the support, the output shaft of the motor is fixedly connected with the center of the left end surface of the rotating shaft, the input end of the motor is electrically connected with the output end of the control switch group, and the stable driving makes the melting bin shake.

[0014] Further, the lower end of the left and right inner walls of the support is provided with a mounting plate, the upper side of the mounting plate is provided with a motor, the output shaft of the motor is fixedly connected with the center of the rear end surface of the extrusion screw, and the input end of the motor is electrically connected with the output end of the control switch group.

[0015] Compared with the prior art, the hot shrinkable film melting extruder has the following advantages:

[0016] The adjusting motor drives the mounting shaft to rotate, the helical blade on the shaft pushes the hot shrinkable film to move axially, forms up-down circulating flow, and promotes the hot shrinkable film to fully mix in the vertical direction; the inclined blade pushes the hot shrinkable film to move radially, forms horizontal circulating flow, and promotes the hot shrinkable film to flow between the center and the edge, so that the complex three-dimensional stirring flow field is constructed by combination of the two, and the mixing effect is greatly improved; wherein, the hot shrinkable films with different components, densities and viscosities behave differently in the mixing process, the helical blade has good promotion and dispersion effect on the hot shrinkable film with poor flowability and easy to accumulate, can prevent the hot shrinkable film from caking at the bottom, and the inclined blade has remarkable mixing effect on the hot shrinkable film with large density difference, and can reduce the stratification phenomenon caused by different densities through horizontal circulating flow. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the front end of the utility model;

[0018] Figure 2 It is a structural schematic view of the right side surface of the extrusion pipe of the utility model;

[0019] Figure 3 It is a structural schematic view of the enlarged A of the utility model;

[0020] Figure 4 It is a structural schematic view of the melting mechanism of the utility model;

[0021] Figure 5 It is a structural schematic view of the right side surface of the melting bin of the utility model;

[0022] Figure 6 It is a structural schematic view of the mounting shaft of the utility model;

[0023] Figure 7 It is a structural schematic view of the mounting shaft of the utility model;

[0024] In the figure: 1 control switch group, 2 melting mechanism, 21 melting bin, 22 electric heating wire, 23 filter plate, 24 adjusting motor, 25 feeding pipe, 26 blade, 27 mounting shaft, 28 helical blade, 29 inclined blade, 3 electric valve, 4 adding door, 5 extrusion pipe, 6 extrusion screw, 7 support, 8 rotating shaft, 9 motor, 10 hopper, 11 mounting plate, 12 motor, 13 inner barrel. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] Please refer to Figures 1-7 The embodiment provides a technical scheme: a hot shrinkable film melting extruder, which comprises a support 7, the right side surface of the support 7 is provided with a control switch group 1, the input end of the control switch group 1 is electrically connected with an external power supply, the front side of the support 7 is provided with an extrusion pipe 5, the rear side inner wall of the extrusion pipe 5 is rotatably connected with an extrusion screw 6, the left and right inner walls of the support 7 are provided with mounting plates 11 at the lower ends, the upper side surfaces of the mounting plates 11 are installed with motors 12, the output shafts of the motors 12 are fixedly connected with the rear end surfaces of the extrusion screw 6, the input ends of the motors 12 are electrically connected with the output ends of the control switch group 1, the outer arc rear side upper end of the extrusion pipe 5 is provided with a hopper 10, the melted hot shrinkable film raw material enters the inside of the extrusion pipe 5 through the hopper 10, a worker controls the control switch group 1 to make the motor 12 operate, the output shaft of the motor 12 drives the extrusion screw 6 to rotate, (the extrusion screw 6 is a rotating shaft, the surface of the rotating shaft is provided with helical blades, when the rotating shaft rotates, the helical blades also synchronously rotate, the shape of the helical blades is similar to that of a propeller, in the rotating process, the helical blades generate an axial thrust on the melted hot shrinkable film raw material), the hot shrinkable film raw material is extruded, which is convenient for processing, and the hot shrinkable film melting extruder further comprises a melting mechanism 2.

[0027] The melting mechanism 2 comprises a melting bin 21, a mounting shaft 27, a spiral blade 28 and an inclined blade 29, the melting bin 21 is rotationally connected to the upper end of the left and right inner walls of the support 7, the melting bin 21 is rotationally connected with the support 7 through the rotating shaft 8, the left side of the support 7 is provided with the motor 9, the output shaft of the motor 9 is fixedly connected with the center of the left end surface of the rotating shaft 8, the input end of the motor 9 is electrically connected with the output end of the control switch group 1, the top wall of the melting bin 21 is rotationally connected with the mounting shaft 27, the outer arc surface of the mounting shaft 27 is provided with the spiral blade 28, the bottom wall of the melting bin 21 is provided with the inner barrel 13, the spiral blade 28 is arranged in cooperation with the inner barrel 13 (the spiral blade 28 is located in the inner barrel 13, the edge of the spiral blade 28 is in contact with the inner wall of the inner barrel 13, and the inner barrel 13 is arranged on the bottom wall of the melting bin 21 through three mounting columns, and there is a gap between the upper end of the inner barrel 13 and the top wall of the melting bin 21), the front and rear sides of the upper end of the outer arc surface of the mounting shaft 27 are both provided with the inclined blade 29, and the melting mechanism 2 further comprises a feeding pipe 25 and a blade 26, the upper side of the melting bin 21 is provided with the feeding pipe 25,The inner arc surface of the feeding pipe 25 is provided with evenly distributed blades 26, the upper side wall of the feeding pipe 25 is hingedly connected with the adding door 4, the melting mechanism 2 further comprises a filter plate 23, the lower side wall of the melting bin 21 is provided with a discharge port, the inner upper end of the discharge pipe is provided with the filter plate 23, the middle part of the discharge pipe is connected with the electric valve 3, the input end of the electric valve 3 is electrically connected with the output end of the control switch group 1, the melting mechanism 2 further comprises an electric heating wire 22, the arc-shaped side wall of the melting bin 21 is internally provided with a cavity, the inner part of the cavity is provided with the electric heating wire 22, the input end of the electric heating wire 22 is electrically connected with the output end of the control switch group 1, the melting mechanism 2 further comprises an adjusting motor 24, the adjusting motor 24 is installed on the upper side of the melting bin 21, the output shaft of the adjusting motor 24 is fixedly connected with the center of the upper end surface of the mounting shaft 27, the input end of the adjusting motor 24 is electrically connected with the output end of the control switch group 1, the worker opens the adding door 4 to put the heat shrink film raw material into the inner part of the feeding pipe 25, when the raw material enters from the feeding pipe 25, passes through the blades 26, the blades 26 will hinder the flow of the raw material, the raw material particles of different particle sizes and densities will change the flow direction and speed when passing through the blade gap, and then collide, rub and mix with each other, which can provide a certain degree of premixing effect for the raw material before entering the melting bin 21, then the worker closes the adding door 4, controls the control switch group 1 to make the adjusting motor 24, the motor 9 and the electric heating wire 22 start working, when the electric heating wire 22 is powered on, it will generate heat, the heat will first be conducted through the contact between the electric heating wire 22 and the inner wall of the cavity, after a period of time, the heat is conducted from the inner wall of the cavity to the arc-shaped side wall of the melting bin 21, starts to heat the heat shrink film raw material, at the same time, the output shaft of the adjusting motor 24 drives the whole composed of the mounting shaft 27, the spiral blade 28 and the inclined blade 29 to rotate, the spiral blade 28 cooperates with the inner barrel 13 when rotating, pushes the heat shrink film raw material flowing into the inner part of the inner barrel 13 to move along the axial direction, flows out from the upper end of the inner barrel 13, makes the heat shrink film raw material produce up-down circulating flow, which is helpful to lift the bottom heat shrink film raw material to the top, and convey the top heat shrink film raw material to the bottom, so as to promote the heat shrink film raw material to be fully mixed in the vertical direction, the inclined blade 29 pushes the heat shrink film raw material to move in the radial direction, makes the heat shrink film raw material form horizontal direction circulation in the melting bin 21, promotes the heat shrink film raw material to flow from the center to the edge and from the edge to the center, the combination of the two builds a complex and three-dimensional stirring flow field in the melting bin 21, so that the heat shrink film raw material can be fully mixed in the axial and radial directions, greatly improves the mixing effect, at the same time, the output shaft of the motor 9 drives the melting bin 21 to constantly rotate by 45 degrees forward and backward through the rotating shaft 8, makes the melting bin 21 shake with the heat shrink film raw material, further improves the mixing uniformity of the heat shrink film raw material, and better mixes the heat shrink film raw material.

[0028] The working principle of the hot shrinkage film melting extruder is as follows: firstly, the worker opens the adding door 4 and pours the hot shrinkage film raw material into the inside of the feeding pipe 25, when the raw material enters from the feeding pipe 25 and passes through the blade 26, the blade 26 will hinder the flow of the raw material, the raw material particles with different particle sizes and densities will change the flow direction and speed when passing through the blade gap, and then collide, rub and mix with each other, this way can provide a certain degree of premixing effect for the raw material before entering the melting bin 21, then the worker closes the adding door 4, controls the control switch group 1 to make the adjusting motor 24, the motor 9 and the electric heating wire 22 start working, when the electric heating wire 22 is electrified, it will generate heat, the heat will be conducted through the contact between the electric heating wire 22 and the cavity inner wall at first, after a period of time, the heat is conducted from the cavity inner wall to the arc-shaped side wall of the melting bin 21, starts to heat the hot shrinkage film raw material, and the output shaft of the adjusting motor 24 drives the whole composed of the mounting shaft 27, the spiral blade 28 and the inclined blade 29 to rotate, the spiral blade 28 cooperates with the inner barrel 13 when rotating, pushes the hot shrinkage film raw material flowing into the inside of the inner barrel 13 to move along the axial direction, and the hot shrinkage film raw material flows out from the upper end of the inner barrel 13, so that the hot shrinkage film raw material generates up-down circulating flow, which is helpful to lift the bottom hot shrinkage film raw material to the top, and the top hot shrinkage film raw material is conveyed to the bottom, thereby promoting the hot shrinkage film raw material to be fully mixed in the vertical direction, and the inclined blade 29 pushes the hot shrinkage film raw material to move in the radial direction, so that the hot shrinkage film raw material forms horizontal direction circulation in the melting bin 21, promotes the hot shrinkage film raw material to flow from the center to the edge and from the edge to the center, and the combination of the two builds a complex and three-dimensional stirring flow field in the melting bin 21, so that the hot shrinkage film raw material can be fully mixed in the axial and radial directions, greatly improves the mixing effect, meanwhile, the output shaft of the motor 9 drives the melting bin 21 to continuously rotate by 45 degrees through the rotating shaft 8, so that the melting bin 21 shakes with the hot shrinkage film raw material, and the mixing uniformity of the hot shrinkage film raw material is further improved, after a period of time, the worker controls the control switch group 1 to make the motor 9 rotate, the output shaft of the motor 9 drives the melting bin 21 to rotate to the vertical state with the ground through the rotating shaft 8, then controls the control switch group 1 to make the electric valve 3 open, the melted hot shrinkage film raw material flows out through the filter plate 23, enters the inside of the extrusion pipe 5 through the hopper 10, and the hot shrinkage film raw material which is not melted is separated by the filter plate 23 and continues to be heated, then the worker controls the control switch group 1 to make the electric motor 12 rotate, the output shaft of the electric motor 12 drives the extrusion screw 6 to rotate, the extrusion screw 6 is a rotating shaft with spiral blades on the surface, when the rotating shaft rotates, the spiral blades also rotate synchronously, the shape of the spiral blade is similar to that of a propeller, and in the rotating process, the spiral blade will generate an axial thrust on the melted hot shrinkage film raw material, and the hot shrinkage film raw material is extruded.

[0029] It is worth noting that the motor 12 disclosed in the above embodiment can be of Model MSME021SU, the adjusting motor 24 is suggested to use a high-temperature-resistant explosion-proof motor, the motor 9 can be a servo motor of HG-KN series, the electric heating wire 22 is a conventional electric heating wire, the electric valve 3 can be a high-temperature-resistant O-shaped floating ball valve, and the control switch group 1 is provided with control buttons corresponding to the motor 9, the electric heating wire 22, the electric valve 3, the motor 12 and the adjusting motor 24 respectively and used for controlling the switches thereof.

[0030] The above description is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which is made by using the content of the present application specification and drawings, is also included in the patent protection range of the present application.

Claims

1. A heat-shrinkable film melt extruder comprising a support (7), the front side of the support (7) being provided with an extrusion tube (5), the rear side inner wall of the extrusion tube (5) being rotatably connected with an extrusion screw (6), the outer arc surface rear side upper end of the extrusion tube (5) being provided with a hopper (10), characterized in that: Also include melting mechanism (2); The melting mechanism (2) comprises a melting bin (21), a mounting shaft (27), a spiral blade (28) and an inclined blade (29), the melting bin (21) is rotatably connected to the left and right inner walls of the bracket (7), the top wall of the melting bin (21) is rotatably connected with the mounting shaft (27), the outer arc surface of the mounting shaft (27) is provided with the spiral blade (28), the bottom wall of the melting bin (21) is provided with an inner barrel (13), the spiral blade (28) is arranged in cooperation with the inner barrel (13), and the front and rear sides of the upper end of the outer arc surface of the mounting shaft (27) are provided with the inclined blade (29).

2. A heat shrinkable film melt extruder according to claim 1, characterized in that: The right side of the bracket (7) is provided with a control switch group (1), and the input end of the control switch group (1) is electrically connected with an external power supply.

3. A heat shrinkable film melt extruder as defined in claim 1, characterized in that: The melting mechanism (2) further comprises a feeding pipe (25) and a blade (26), the upper side of the melting bin (21) is provided with the feeding pipe (25), the inner arc surface of the feeding pipe (25) is provided with uniformly distributed blades (26), and the upper side wall of the feeding pipe (25) is hingedly connected with an adding door (4).

4. A heat shrinkable film melt extruder as defined in claim 2, characterized in that: The melting mechanism (2) further comprises a filter plate (23), a discharge pipe is arranged at the discharge port of the lower side wall of the melting bin (21), the inner upper end of the discharge pipe is provided with the filter plate (23), and the middle part of the discharge pipe is connected with an electric valve (3), and the input end of the electric valve (3) is electrically connected with the output end of the control switch group (1).

5. A heat shrinkable film melt extruder as defined in claim 2, characterized in that: The melting mechanism (2) further comprises an electric heating wire (22), a cavity is formed in the arc-shaped side wall of the melting bin (21), the electric heating wire (22) is arranged in the cavity, and the input end of the electric heating wire (22) is electrically connected with the output end of the control switch group (1).

6. A heat shrinkable film melt extruder as defined in claim 2, characterized in that: The melting mechanism (2) further comprises an adjusting motor (24), the adjusting motor (24) is installed on the upper side of the melting bin (21), the output shaft of the adjusting motor (24) is fixedly connected with the center of the upper end surface of the mounting shaft (27), and the input end of the adjusting motor (24) is electrically connected with the output end of the control switch group (1).

7. A heat shrinkable film melt extruder as defined in claim 2, characterized in that: The melting bin (21) and the bracket (7) are rotatably connected through a rotating shaft (8), a motor (9) is installed on the left side of the bracket (7), the output shaft of the motor (9) is fixedly connected with the center of the left end surface of the rotating shaft (8), and the input end of the motor (9) is electrically connected with the output end of the control switch group (1).

8. A heat shrinkable film melt extruder as defined in claim 2, characterized by: The left and right inner walls of the bracket (7) are provided with mounting plates (11), the upper side of the mounting plate (11) is provided with an electric motor (12), the output shaft of the electric motor (12) is fixedly connected with the center of the rear end surface of the extrusion screw (6), and the input end of the electric motor (12) is electrically connected with the output end of the control switch group (1).

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