CN223442787U - A double-screw plastic extruder - Google Patents

Abstract

The utility model discloses a twin-screw plastic extruder, belonging to the field of twin-screw plastic extruders, comprising an extruder body, a mounting frame, a discharge port, a spiral extrusion shaft, a power motor, a feeding hopper, an electric heating net, a connecting rod, a crank, a first bevel gear, and a second bevel gear. The utility model drives the spiral extrusion shaft to rotate by the power motor, thereby extruding the raw materials in the extruder body outward through the discharge port, and feeding the raw materials through the feeding hopper. The raw materials are preheated by the electric heating net and then fed into the extruder body. When the power motor is working, the power motor drives the crank to rotate, and the rotation of the crank drives the connecting rod to move. The movement of the connecting rod drives the electric heating net to reciprocate in the feeding hopper, thereby promoting the downward movement of the raw materials above the electric heating net, and preventing the heating net from clogging the raw materials.

Description

Double-screw plastic extruder

Technical Field

The utility model relates to the field of double-screw plastic extruders, in particular to a double-screw plastic extruder.

Background

In the plastic extruder molding equipment, the plastic extruder is usually called a host machine, and the plastic extruder molding machine of the subsequent equipment matched with the host machine is called an auxiliary machine, after the plastic extruder is developed for more than 100 years, the original single screw is used for deriving multiple types of double screws, multiple screws, even no screws and the like, and the plastic extruder (host machine) can be matched with various plastic molding auxiliary machines such as pipes, films, bars, monofilaments, flat wires, packing belts, extruding nets, plates (sheets), special-shaped materials, pelleting, cable coating and the like to form various plastic extruder molding production lines to produce various plastic products, so that the plastic extruder molding machine is one of the types widely applied in the plastic processing industry no matter in the present or in the future.

Among the prior art, patent publication number CN213472148U discloses a double helix plastic extruder, belong to plastics processing equipment field, a double helix plastic extruder, including the plastic extruder, the lower extreme four corners department fixedly connected with base of plastic extruder, the left side of plastic extruder is equipped with a pair of motor base, the motor is all installed to the upper end of motor base, the chisel has the rotary groove on the left side wall of plastic extruder, the power take off end fixedly connected with pivot of motor, and the pivot runs through the rotary groove and extends to in the plastic extruder, the one end fixedly connected with screw extrusion axle of motor is kept away from to the pivot, fixedly connected with heat preservation in the plastic extruder, and the heat preservation encircles in the outside of screw extrusion axle, the discharge gate has been seted up on the right side of plastic extruder, can realize preheating before the plastics raw materials feed cylinder, the temperature when increasing plastics raw materials and entering feed cylinder, enable the raw materials mix more evenly, the plastics shaping of extrusion is faster, the production quality of product is increased.

The technical scheme solves the problem of raw material preheating, but adopts a mode of installing a transverse heating pipe and a longitudinal heating pipe on a feeding port to heat raw materials, but the heating structure can cause obstruction to the operation of the raw materials and influence the discharging during feeding.

Disclosure of utility model

The utility model aims to solve the problems in the background art, and designs a double-screw plastic extruder.

The technical scheme includes that the double-screw plastic extruder comprises an extruder body, a mounting frame, a discharge hole, screw extrusion shafts, a power motor, a charging hopper, an electric heating net, a connecting rod, a crank, first umbrella teeth and second umbrella teeth, wherein the extruder body is mounted on the mounting frame, the discharge hole is mounted at the right end of the extruder body, the screw extrusion shafts are mounted in the extruder body, the screw extrusion shafts are two and are connected through gear engagement, the power motor is mounted on the mounting frame, the output end of the power motor is connected with the screw extrusion shafts, the charging hopper is mounted on the extruder body, a multi-layer electric heating net is inserted on the charging hopper in a sliding mode, the left end of the electric heating net is rotatably connected with the connecting rod, the crank is rotatably connected with the left end of the connecting rod, the crank is rotatably mounted on the extruder body, the first umbrella teeth are connected with the second umbrella teeth in an engaged mode, and the second umbrella teeth are fixedly sleeved on the output end of the power motor.

Further, the electric heating net is a grid-shaped structure formed by connecting electric heating pipes in a grid structure.

Further, the rotatable connection position of the left end of the connecting rod and the crank deviates from the rotation axis of the crank.

Further, the left side and the right side of the electric heating net are connected with plate-shaped structures which are embedded on the side wall of the charging hopper in a sliding way.

Further, the extruder body is an extrusion cylinder structure of the extruder.

The beneficial effects are that:

The utility model provides a double-screw plastic extruder which has the beneficial effects that through the structural design, the device drives a screw extrusion shaft to rotate through a power motor, so that raw materials in an extruder body are extruded outwards through a discharge hole, are fed through a feed hopper, are heated and preheated by an electric heating net and then are fed into the extruder body, when the power motor works, the power motor drives a crank to rotate, the crank rotates to drive a connecting rod to move, and the connecting rod moves to drive the electric heating net to reciprocate in the feed hopper, so that the raw materials above the electric heating net are promoted to descend, and the blockage of the raw materials by the heating net is avoided.

Drawings

FIG. 1 is a schematic view of a double screw plastic extruder according to the present utility model;

FIG. 2 is a schematic top view of the extruder body of the twin screw plastic extruder of the present utility model;

fig. 3 is a schematic top view of the electric heating net of the double screw plastic extruder of the present utility model.

In the figure, 1, an extruder body, 2, a mounting rack, 3, a discharge hole, 4, a spiral extrusion shaft, 5, a power motor, 6, a charging hopper, 7, an electric heating net, 8, a connecting rod, 9, a crank, 10, a first umbrella tooth, 11 and a second umbrella tooth.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the terms "upper/lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured/arranged," "coupled," "connected," and the like are to be construed broadly and include, for example, "connected," either permanently or detachably, or integrally, mechanically or electrically, or directly or indirectly via an intermediate medium, as well as in communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-3, the utility model provides a technical scheme that the double-screw plastic extruder comprises an extruder body 1, a mounting frame 2, a discharge port 3, a screw extrusion shaft 4, a power motor 5, a charging hopper 6, an electric heating net 7, a connecting rod 8, a crank 9, a first umbrella tooth 10 and a second umbrella tooth 11, wherein the extruder body 1 is mounted on the mounting frame 2, the discharge port 3 is mounted at the right end of the extruder body 1, the screw extrusion shaft 4 is mounted in the extruder body 1, the two screw extrusion shafts 4 are connected through gear engagement, the power motor 5 is mounted on the mounting frame 2, the output end of the power motor 5 is connected with the screw extrusion shaft 4, the charging hopper 6 is mounted on the extruder body 1 in a sliding manner, the multi-layer electric heating net 7 is inserted on the charging hopper 6, the left end of the electric heating net 7 is rotatably connected with the connecting rod 8, the crank 9 is rotatably connected with the left end of the connecting rod 8, the crank 9 is rotatably mounted on the extruder body 1, the lower end of the crank 9 is connected with the first umbrella tooth 10, the second umbrella tooth 11 is engaged on the first umbrella tooth 10, and the second umbrella tooth 11 is fixedly sleeved on the power output end of the power motor 5.

In the utility model, the electric heating net 7 is a grid-shaped structure formed by connecting electric heating pipes in a grid structure, so that the contact area with raw materials is larger, and the heating effect is better.

In the utility model, the rotatable connection position of the left end of the connecting rod 8 and the crank 9 deviates from the rotation axis of the crank 9, and the connecting rod 8 can be driven to move through the rotation of the crank 9.

In the utility model, the left side and the right side of the electric heating net 7 are connected with plate-shaped structures, the plate-shaped structures are embedded on the side wall of the charging hopper 6 in a sliding way, and then the electric heating net 7 is contacted with the side wall of the charging hopper 6 through the plate-shaped structures, so that the electric heating net is prevented from carrying raw materials outwards.

In the utility model, the extruder body 1 is an extrusion cylinder structure of an extruder, and the extruder body 1 has a heating function and is an extruder body in the prior art.

All electric parts and the adaptive power supply are connected through wires by the person skilled in the art, and a proper controller is selected according to actual conditions so as to meet control requirements, specific connection and control sequence, and the electric connection is completed by referring to the following working principles in the working sequence among the electric parts, wherein the detailed connection means are known in the art, and the following main description of the working principles and processes is omitted.

In this embodiment:

During operation, the spiral extrusion shaft 4 is driven to rotate through the power motor 5, then raw materials in the extruder body 1 are extruded outwards through the discharge hole 3, the raw materials are fed through the charging hopper 6, the raw materials are preheated through the electric heating net 7, then the raw materials are fed into the extruder body 1, during operation of the power motor 5, the power motor 5 drives the crank 9 to rotate through the first umbrella tooth 10 and the second umbrella tooth 11, the crank 9 rotates to drive the connecting rod 8 to move, the connecting rod 8 moves to drive the electric heating net 7 to reciprocate in the charging hopper 6, and then the raw materials above the electric heating net 7 are promoted to descend, and the electric heating net 7 is prevented from blocking the raw materials.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, 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. Without more in the limited case. The term "comprising" an element defined by the term "comprising" does not exclude the presence of other identical elements in a process, method, article or apparatus that comprises the element.

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

Claims (5)

1. The utility model provides a double helix plastics extruder, includes extruder body (1), mounting bracket (2), discharge gate (3), spiral extrusion axle (4), power motor (5), loading hopper (6), electrical heating net (7), connecting rod (8), crank (9), umbrella tooth (10) No. two, umbrella tooth (11), its characterized in that, install extruder body (1) on mounting bracket (2), discharge gate (3) are installed to extruder body (1) right-hand member, install spiral extrusion axle (4) in extruder body (1), spiral extrusion axle (4) are two and connect through the gear interlock, install power motor (5) on mounting bracket (2), power motor (5) output and spiral extrusion axle (4) are connected, install loading hopper (6) on extruder body (1), slide cartridge is equipped with multilayer electrical heating net (7) on loading hopper (6), electrical heating net (7) left end rotatable coupling has connecting rod (8), rotatable connecting rod (9) are connected with one crank (9) and are connected at crank end (9), the first umbrella tooth (10) is meshed with the second umbrella tooth (11), and the second umbrella tooth (11) is fixedly sleeved on the output end of the power motor (5).

2. A twin-screw plastic extruder according to claim 1, characterised in that the electric heating net (7) is a grid-like structure of electric heating pipes connected in a grid structure.

3. A twin-screw plastic extruder according to claim 1, characterised in that the rotatable connection of the left end of the connecting rod (8) and the crank (9) is offset from the rotational axis of the crank (9).

4. A twin-screw plastic extruder according to claim 1, characterised in that the electric heating net (7) is connected to the left and right side with plate-like structures which are slidingly embedded on the side walls of the hopper (6).

5. A twin screw plastic extruder according to claim 1, characterised in that the extruder body (1) is the barrel structure of the extruder.