CN213533721U

CN213533721U - Die head of double-screw extruder

Info

Publication number: CN213533721U
Application number: CN202022342746.4U
Authority: CN
Inventors: 王靖程
Original assignee: Wuxi Tenglong Plastic Technology Co Ltd
Current assignee: Wuxi Tenglong Plastic Technology Co Ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-06-25
Anticipated expiration: 2030-10-20

Abstract

The utility model discloses a double screw extruder die head, including barrel and die head main part, one side of die head main part is provided with second die head and first die head to second die head and first die head are horizontal parallel arrangement, the second die head is in the top side position of first die head to the second valve is installed at the top of second die head, first valve is installed to the bottom of first die head, the top of die head main part and the lid clamp that the bottom is fixed respectively and is provided with two symmetry settings, two the inside of lid clamp all blocks and is equipped with the shield, the fixed surface of shield is connected with the string to the one end and the die head main part fixed connection of string, be provided with leak protection layer between die head main part and the barrel. In short, this double screw extruder die head through special structural design not only makes extrusion product shape variety, still has and is convenient for change and dismantles, and the guarantee leakproofness is good, has promoted the advantage of the efficiency that the die head was changed greatly.

Description

Die head of double-screw extruder

Technical Field

The utility model relates to an extruder die head technical field specifically is a double screw extruder die head.

Background

Extruder originated in the 18 th century, and the manual piston extruder manufactured by Joseph in 1795 was considered the first extruder in the world, since then, during the first 50 years of the 19 th century, extruders were basically only suitable for use in lead pipe production, macaroni and other food processing, brick making and ceramic industries, and in the development of a manufacturing process, the 1 st patent specifically filed by Broom in 1845 for the production of gute gel wire with an extruder, which was subsequently improved by gute corporation's h.bel and used in 1851 for wrapping over the copper wire of the 1 st submarine cable between the Dover and Calais, the 1879 th imperial m.gray made the first patent to the archimedes screw extruder, and in the following 25 years, the extrusion process became increasingly important and was rapidly replaced by a manually operated extruder, in 1935 German machine manufacturers Paul produced extruders for thermoplastics, which developed plastic extruders to a current stage, modern single screw extruders in 1939, while twin screw extruders developed on the basis of single screw extruders, have been widely used for shaping extruded products due to their good feeding, mixing and plasticizing, venting and extrusion stability, and are composed of several parts, such as transmission, feeding, barrel and screw, and the like, and the parts function similarly to single screw extruders, whose structure is shown in FIG. 1, and which differs from single screw extruders in that two parallel screws are placed in a barrel with an "∞" shaped cross section, and in that the die head of the extruder plays an important role in the function of the extruder, which function is to make the plastic melt from the extruder barrel, well distributed in the die runner to extrude and shape at uniform speed from the die, the shaping action of the extrusion die is critical in the overall extrusion (see plastics processing), and the dies of the existing twin-screw extruders have the following disadvantages:

firstly, the method comprises the following steps: the existing extruder die head is often single and can only extrude a product with one shape;

II, secondly: the existing extruder die head is troublesome to install, time-consuming, labor-consuming and inconvenient to replace in the using process, so that the replacing efficiency is low, and the working efficiency is reduced;

in view of the foregoing, it would be desirable to provide a novel twin screw extruder die.

SUMMERY OF THE UTILITY MODEL

The utility model provides a to prior art not enough, the utility model provides a double screw extruder die head has solved current extruder die head and has often more single, and the product that can only extrude a shape, installation are more troublesome, waste time and energy, and the change of being not convenient for the efficiency of change is very low, reduces work efficiency's problem.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the die head of the double-screw extruder comprises a machine barrel and a die head main body, wherein a second die head and a first die head are arranged on one side of the die head main body and are transversely arranged in parallel, the second die head is positioned at the top side of the first die head, a second valve is mounted at the top of the second die head, and a first valve is mounted at the bottom of the first die head.

Preferably, the top and the bottom of the die head main body are respectively and fixedly provided with two symmetrically-arranged cover clamps, the two covers clamp the interior of the dust cover, the surface of the dust cover is fixedly connected with a string, and one end of the string is fixedly connected with the die head main body.

Preferably, an anti-leakage layer is arranged between the die head main body and the machine barrel, and the surface of the die head main body and the surface of the machine barrel are jointly provided with a plurality of buckles.

Preferably, the surfaces of the first die head and the second die head are provided with threads, and the first die head, the second die head and the die head body are connected through the threads.

Preferably, the side of the second die head far away from the die head body is provided with a square extrusion opening.

Preferably, a circular extrusion opening is formed in one side of the first die head, which is far away from the die head body.

Advantageous effects

The utility model provides a double screw extruder die head. Compared with the prior art, the method has the following beneficial effects:

1: this twin-screw extruder die head is through being provided with first die head and the second die head of different shape extrusion mouths to first die head and second die head are all installed in the die head main part, and the cooperation has first valve and second valve, can the exclusive use, also can the used jointly, make product shape variety, and it is convenient to change.

2: this double screw extruder die head is through being provided with leak protection layer between die head main part and barrel, cooperates the connected form of buckle for this extruder die head is convenient for change and dismantles, and has ensured that the leakproofness is good, has promoted the efficiency that the die head was changed greatly.

In short, this double screw extruder die head through special structural design not only makes extrusion product shape variety, still has and is convenient for change and dismantles, and the guarantee leakproofness is good, has promoted the advantage of the efficiency that the die head was changed greatly.

Drawings

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

fig. 2 is a schematic view of the thread structure of the first die and the second die of the present invention;

FIG. 3 is a schematic structural view of a square extrusion port of the present invention;

FIG. 4 is a schematic structural view of the circular extrusion opening of the present invention;

in the figure: 1. a barrel; 2. a die head body; 3. a first valve; 4. a first die head; 5. a second die head; 6. a second valve; 7. a string; 8. a dust cover; 9. a cover clip; 10. a leakage-proof layer; 11. buckling; 12. a thread; 13. a square extrusion port; 14. a circular extrusion opening.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, the present invention provides a technical solution: a double-screw extruder die head comprises a machine barrel 1 and a die head body 2, wherein a second die head 5 and a first die head 4 are arranged on one side of the die head body 2, the second die head 5 and the first die head 4 are transversely arranged in parallel, the second die head 5 is arranged on the top side of the first die head 4, a second valve 6 is arranged on the top of the second die head 5, a first valve 3 is arranged on the bottom of the first die head 4, and in the using process, the second valve 6 and the first valve 3 can be opened simultaneously, so that the second die head 5 and the first die head 4 work simultaneously, or only the first valve 3 can be opened to enable the first die head 4 to work, or only the second valve 6 is opened to enable the second die head 5 to work.

Further, the top and the bottom of die head main part 2 are the fixed lid that is provided with two symmetries respectively and press from both sides 9, two inside all blocks that the lid pressed from both sides 9 are equipped with shield 8, shield 8's fixed surface is connected with string 7, and the one end and the die head main part 2 fixed connection of string 7, at the in-process of work, can set up shield 8 inside the lid presss from both sides 9, in equipment stop work, can cover shield 8 on the surface of second die head 5 and first die head 4, prevent that the dust from piling up, and increase of service life saves the time of cleaning.

Further, be provided with leak protection layer 10 between die head main part 2 and the barrel 1 to die head main part 2 is provided with a plurality of buckles 11 with the surface of barrel 1 jointly, and such setting has better convenience when making the change, and has ensured that the leakproofness is good.

Further, the surfaces of the first die head 4 and the second die head 5 are provided with the threads 12, the first die head 4, the second die head 5 and the die head body 2 are in threaded connection through the threads 12, and the first die head 4 and the second die head 5 are replaced more conveniently and quickly through the threaded connection.

Further, the side of the second die 5 away from the die main body 2 is provided with a square extrusion port 13, so that a square product can be extruded.

Further, a circular extrusion port 14 is provided on the side of the first die 4 away from the die body 2, and a circular product can be extruded.

And those not described in detail in this specification are well within the skill of those in the art.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A die head of a double-screw extruder comprises a machine barrel (1) and a die head main body (2), and is characterized in that: one side of the die head main body (2) is provided with a second die head (5) and a first die head (4), the second die head (5) and the first die head (4) are transversely arranged in parallel, the second die head (5) is positioned at the top side of the first die head (4), a second valve (6) is installed at the top of the second die head (5), and a first valve (3) is installed at the bottom of the first die head (4).

2. The twin screw extruder die of claim 1, wherein: the die head is characterized in that two cover clamps (9) which are symmetrically arranged are fixedly arranged at the top and the bottom of the die head main body (2) respectively, two dust covers (8) are clamped inside the cover clamps (9), the surface of each dust cover (8) is fixedly connected with a string (7), and one end of each string (7) is fixedly connected with the die head main body (2).

3. The twin screw extruder die of claim 1, wherein: a leakage-proof layer (10) is arranged between the die head main body (2) and the machine barrel (1), and a plurality of buckles (11) are arranged on the surfaces of the die head main body (2) and the machine barrel (1) together.

4. The twin screw extruder die of claim 1, wherein: the surface of the first die head (4) and the surface of the second die head (5) are both provided with threads (12), and the first die head (4), the second die head (5) and the die head body (2) are in threaded connection through the threads (12).

5. The twin screw extruder die of claim 1, wherein: and a square extrusion opening (13) is formed in one side, away from the die head main body (2), of the second die head (5).

6. The twin screw extruder die of claim 1, wherein: and a circular extrusion opening (14) is formed in one side, away from the die head main body (2), of the first die head (4).