Machine head of double-screw extruder

Abstract

The utility model relates to the technical field of extruder heads, and provides a double-screw extruder head which comprises a main body, a connecting body, an output port cover and a temperature control device, and the outer wall of the main body is fixedly connected with a plurality of fixed seats; a plurality of fixing bolts are rotationally connected to the inner wall of the connecting body, and the tail ends of the fixing bolts are in threaded connection to the inner wall of the fixing base; the outer wall of the connecting body is in threaded connection with an output port cover, and the outer walls of the main body, the connecting body and the output port cover are fixedly connected with temperature control devices. Through the arrangement of the output port cover, when the device adjusts the output shape, the device can be rapidly installed through threaded connection, the shape of output materials is changed, through the arrangement of the spoiler, the materials in spiral motion during input are converted into linear motion, through the arrangement of the temperature control device, the device can adjust the temperature of the machine head in time, and the temperature of the machine head can be adjusted in time. And unstable output caused by too fast or too slow material plasticizing process is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to extruder head technical field, concretely relates to a double screw extruder head. BACKGROUND

[0002] The extruder head is a key component of the extruder, responsible for extruding the molten material through a specific die shape to form a product with the required cross-section. It is composed of a feed inlet, a flow divider, a filter screen, a die head, a die, and a cooling system, among other parts. The design and structure of the extruder head are crucial to the quality, dimensional accuracy, and production efficiency of the extruded product. Depending on the different products and process requirements, the extruder head can have single-layer, multi-layer, special-shaped, blown film, and pipe types, among others. When designing, principles such as streamline, uniform distribution, easy cleaning, and temperature control should be considered.

[0003] A known patent with application number 202022708338.6 discloses a kind of assembled extruder head: including extruder head, the front side of the extruder head is provided with extrusion die, the inner sleeve of the extruder head is connected with discharge pipe, the rear surface of the extrusion die is fixedly connected with butt joint block, the butt joint block is movably sleeved on the outer surface of discharge pipe, the outer surface of the butt joint block is fixedly connected with first locking block, the inner ring of the extruder head is provided with sliding groove, the extruder head is provided with built-in movable slot, the built-in movable slot is rotatably connected with rotating block, the rotating block is provided with butt joint locking mechanism. The extruder head is assembled, the steps of the device during installation of extrusion die are relatively simple, reduce the complexity of extrusion die installation, thereby speeding up the installation speed of the staff during installation, improve the speed of extrusion die installation, improve the work efficiency during the whole work.

[0004] However, in the implementation of the related technology, the above technical scheme has the following problems: during use, due to the special structure of the butt joint locking mechanism, the device is prone to sealing leakage during continuous work, and the stability of the output end is difficult to guarantee if other shapes are used for output.

[0005] Therefore, a double screw extruder head is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0006] The utility model discloses a double screw extruder head, which solves the problem of sealing leakage during continuous work due to the special structure of the butt joint locking mechanism in the related technology, and the stability of the output end is difficult to guarantee if other shapes are used for output.

[0007] The technical scheme of the utility model is as follows: a double screw extruder head, comprising: a main body, a connecting body, an output port cover and a temperature control device, the outer wall of the main body is fixedly connected with a plurality of fixing seats;

[0008] The inner wall of the connecting body is rotationally connected with a plurality of fixing bolts, and the ends of the fixing bolts are threadedly connected to the inner wall of the fixing seat;

[0009] The outer wall of the connecting body is threadedly connected with an output port cover, and the outer walls of the main body, the connecting body and the output port cover are fixedly connected with temperature control devices.

[0010] Preferably, the shape of the input part of the output port cover is the same as that of the output channel, and then transitions to a preset shape.

[0011] Preferably, a plurality of conveying channels are formed in the main body, and an anti-overflow port is fixedly connected to the outer wall of the main body, and the position of the anti-overflow port corresponds to the conveying channels.

[0012] Preferably, an output channel is formed in the connecting body, and the output channel corresponds to the conveying channels.

[0013] Preferably, a spoiler is fixedly connected to the inner part of the main body, and a filter screen is fixedly connected to the inner part of the main body.

[0014] Preferably, a connecting device is fixedly connected to the end of the main body.

[0015] The working principle and beneficial effects of the utility model are as follows:

[0016] Through the setting of the output port cover, when the shape of the output is adjusted, the device can be quickly installed through threaded connection, the shape of the output material is changed, through the setting of the spoiler, the material in spiral motion is converted into straight line motion when input, through the setting of the temperature control device, the device can timely adjust the temperature of the head, and the output is not unstable due to too fast or too slow material plasticizing process. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0018] Figure 1 The utility model provides a three-dimensional structure schematic diagram;

[0019] Figure 2 The utility model provides a rear view three-dimensional structure schematic diagram;

[0020] Figure 3 The utility model provides a sectional structure schematic diagram;

[0021] Figure 4 The utility model provides a sectional three-dimensional structure schematic diagram.

[0022] In the figure: 1, main body; 2, connecting body; 3, temperature control device; 4, connecting device; 5, fixing seat; 6, fixing bolt; 7, filter screen; 8, spoiler; 9, conveying channel; 10, anti-overflow opening; 11, output channel; 12, output port cover. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are involved in the protection scope of the utility model.

[0024] EMBODIMENT

[0025] Please refer to Figure 1 -4, a double screw extruder head, comprising: main body 1, connecting body 2, output port cover 12 and temperature control device 3, the outer wall of main body 1 is fixedly connected with a plurality of fixing seats 5;

[0026] The inner wall of connecting body 2 is rotatably connected with a plurality of fixing bolts 6, and the distal end of fixing bolt 6 is threadedly connected to the inner wall of fixing seat 5;

[0027] The outer wall of connecting body 2 is threadedly connected with output port cover 12, and the outer wall of main body 1, connecting body 2 and output port cover 12 is fixedly connected with temperature control device 3.

[0028] The technical scheme provided by the embodiment is: first, the main body 1 is installed at the output end of the extruder through the connecting device 4, then the connecting body 6 is fixed with the main body 1 through the fixing bolt 6, and when fixing, the output channel 11 should correspond to the conveying channel 9, then the output port cover 12 with the same output shape is selected, and when working, first, the temperature control device 3 is started, the temperature is controlled within the preset range, the output material first contacts the filter screen 7, the filter screen 7 filters out the impurities in the material, then the spoiler 8 is passed through, the spiral movement of the material is converted into straight line movement, then the material is conveyed to the inside of the output channel 11 through the conveying channel 9, then the dispersedly conveyed material is gathered through the connecting body 11, and finally the material is output through the output port cover 12.

[0029] Further, the shape of the input part of the output port cover 12 should be the same as that of the output channel 11, and then transition to the preset shape.

[0030] Specifically, the gradual transition to the preset shape is set to avoid the influence of the vertical edges on the output of the material.

[0031] Further, the inside of the main body 1 is provided with a plurality of conveying channels 9, and the outer wall of the main body 1 is fixedly connected with an anti-overflow port 10, and the position of the anti-overflow port 10 corresponds to the conveying channel 9.

[0032] Specifically, the anti-overflow port 10 is arranged to avoid accidental leakage of the material during operation of the device, thereby increasing the sealing property of the device.

[0033] Further, the inside of the connecting body 2 is provided with an output channel 11, and the output channel 11 corresponds to the conveying channel 9.

[0034] Specifically, the output channel 11 corresponds to the output channel 9, so that the output is smoother, and the influence of the turbulence of the edges and corners on the output effect is avoided.

[0035] Further, the inside of the main body 1 is fixedly connected with a spoiler 8, and the inside of the main body 1 is fixedly connected with a filter screen 7.

[0036] Specifically, the filter screen 7 can isolate the impurities in the material, so that the output material is more pure.

[0037] Further, the end of the main body 1 is fixedly connected with a connecting device 4.

[0038] Specifically, the connecting device 4 enables the device to be quickly installed at the output end of the extruder.

[0039] The above is only a preferred embodiment of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A twin-screw extruder head, comprising: The body (1), the connecting body (2), the output port cover (12) and the temperature control device (3) are characterized in that the outer wall of the body (1) is fixedly connected with a plurality of fixing seats (5); The inner wall of the connecting body (2) is rotatably connected with a plurality of fixing bolts (6), and the distal end of the fixing bolt (6) is threadedly connected to the inner wall of the fixing seat (5); The outer wall of the connecting body (2) is threadedly connected with the output port cover (12), and the outer walls of the body (1), the connecting body (2) and the output port cover (12) are all fixedly connected with the temperature control device (3).

2. A twin screw extruder head according to claim 1, characterized in that: The shape of the input part of the output port cover (12) should be the same as that of the output channel (11), and then transition to a predetermined shape.

3. A twin screw extruder head according to claim 1, characterized in that: A plurality of conveying channels (9) are formed in the body (1), the outer wall of the body (1) is fixedly connected with an anti-overflow port (10), and the position of the anti-overflow port (10) corresponds to the conveying channel (9).

4. A twin screw extruder head according to claim 1, characterized in that: The connecting body (2) is internally provided with an output channel (11), and the output channel (11) corresponds to the conveying channel (9).

5. A twin screw extruder head according to claim 1, characterized in that: The inner wall of the body (1) is fixedly connected with a spoiler (8), and the inner wall of the body (1) is fixedly connected with a filter screen (7).

6. A twin screw extruder head according to claim 1, characterized in that: The distal end of the body (1) is fixedly connected with a connecting device (4).

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