Double-helix plastic extruder

Abstract

The utility model discloses a double-helix plastic extruder, which belongs to the field of double-helix plastic extruders and comprises an extruder body, a mounting frame, a discharge port, a spiral extrusion shaft, a power motor, a feed hopper, an electric heating net, a connecting rod, a crank, a first bevel gear and a second bevel gear. The screw extrusion shaft is driven by the power motor to rotate, so that raw materials in the extruder body are extruded outwards through the discharge port, the raw materials are fed through the feeding hopper, the raw materials are heated and preheated through the electric heating net and then fed into the extruder body, when the power motor works, the power motor drives the crank to rotate, and the crank rotates to drive the connecting rod to move; the connecting rod moves to drive the electric heating net to reciprocate in the feeding hopper, so that raw materials above the electric heating net are promoted to move downwards, and the raw materials are prevented from being blocked by the heating net.

Description

TECHNICAL FIELD

[0001] The utility model relates to double helix plastic extruder field especially a double helix plastic extruder. BACKGROUND

[0002] In the plastic extruder forming equipment, the plastic extruder is usually called the main machine, and the subsequent equipment plastic extruder forming machine matched with it is called the auxiliary machine. The plastic extruder has been derived from the original single screw to double screw, multiple screw and even screwless etc. various models after 100 years of development. The plastic extruder (main machine) can be matched with various plastic forming auxiliary machines such as pipe, film, strand, monofilament, flat wire, packing belt, extrusion net, plate (sheet) material, profile, granulation, cable covering etc. to form various plastic extruder forming production lines to produce various plastic products. Therefore, the plastic extruder forming machine is one of the widely used models in the plastic processing industry at present or in the future.

[0003] In the prior art, patent publication number CN213472148U discloses a double helix plastic extruder, which belongs to the field of plastic processing equipment. The double helix plastic extruder comprises a plastic extruder, a base fixedly connected to the lower end of the plastic extruder, a pair of motor bases provided on the left side of the plastic extruder, a motor installed on the upper end of each motor base, a rotating groove opened on the left side wall of the plastic extruder, a rotating shaft fixedly connected to the power output end of the motor and extending into the plastic extruder through the rotating groove, a spiral extrusion shaft fixedly connected to the end of the rotating shaft away from the motor, a heat preservation layer fixedly connected to the plastic extruder and surrounding the outer side of the spiral extrusion shaft, and a discharge port provided on the right side of the plastic extruder. The double helix plastic extruder can preheat the plastic raw material before it enters the feeding cylinder, increase the temperature of the plastic raw material when it enters the feeding cylinder, make the raw material mixing more uniform, extrude the plastic faster, and increase the production quality of the product.

[0004] The above technical solution solves the problem of preheating the raw material. However, the above technical solution adopts the way of installing a horizontal heating pipe and a vertical heating pipe on the feeding port to heat the raw material. However, the above heating structure itself will hinder the operation of the raw material and affect the feeding. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the problems in the background art and designs a double helix plastic extruder.

[0006] The utility model discloses a technical scheme for realizing the above object, a double helix plastic extruder, including extruder body, mounting bracket, discharge gate, spiral extrusion axle, power motor, feeding hopper, electric heating net, connecting rod, crank, no.

[0007] Further, the electric heating net is a grid structure connected by electric heating pipes.

[0008] Further, the rotatable connecting position of the connecting rod left end and the crank deviates from the rotation axis of the crank.

[0009] Further, the left and right sides of the electric heating net are connected with plate structures, and the plate structures are slidably embedded in the sidewall of the feeding hopper.

[0010] Further, the extruder body is an extrusion barrel structure of an extruder.

[0011] Beneficial effects:

[0012] The double helix plastic extruder has the following beneficial effects. Through the structural design, the power motor drives the spiral extrusion axle to rotate, and then the raw materials in the extruder body are extruded outward through the discharge gate. The feeding hopper is used for feeding. After the raw materials are heated and preheated by the electric heating net, they are fed into the extruder body. When the power motor works, the power motor drives the crank to rotate. 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 avoiding the blockage of the raw materials caused by the heating net. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 is a structural schematic view of the double helix plastic extruder of the utility model;

[0014] Fig. 2 is a top view structural schematic view of the extruder body of the double helix plastic extruder of the utility model;

[0015] Fig. 3It is the electric heating net overhead structure schematic view of the double helix plastic extruder.

[0016] In the figure, 1, extruder body; 2, mounting bracket; 3, discharge port; 4, spiral extrusion shaft; 5, power motor; 6, feeding hopper; 7, electric heating net; 8, connecting rod; 9, crank; 10, No. 1 bevel gear; 11, No. 2 bevel gear. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiments of the present application will be described clearly and completely 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 work fall within the scope of the present application.

[0018] In the description of the present application, it should be noted that the terms "upper / lower end", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "provided / surrounded", "sleeved", "connected" and the like should be broadly understood, for example, "connected" can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0020] Please refer to Figs. 1-3The utility model provides a technical scheme: a double helix plastic extruder, including extruder body 1, mounting bracket 2, discharge gate 3, spiral extrusion axle 4, power motor 5, feeding hopper 6, electric heating net 7, connecting rod 8, crank 9, first bevel gear 10, second bevel gear 11, mounting bracket 2 is installed extruder body 1, and extruder body 1 right -hand member is installed with discharge gate 3, and extruder body 1 is installed with spiral extrusion axle 4 in, and spiral extrusion axle 4 is two and is connected through gear engagement, and mounting bracket 2 is installed with power motor 5, and power motor 5 output end and spiral extrusion axle 4 are connected, and extruder body 1 is installed with feeding hopper 6, and feeding hopper 6 is slidably inserted with multilayer electric heating net 7, and electric heating net 7 left end rotatable connecting has connecting rod 8, and connecting rod 8 left end rotatable connecting has crank 9, and crank 9 rotatable installation is in extruder body 1, and the lower end of crank 9 is connected with first bevel gear 10, and first bevel gear 10 is engaged with second bevel gear 11, and second bevel gear 11 fixed sleeve is on power motor 5 output end.

[0021] In the utility model, electric heating net 7 is the grid structure that electric heating pipe presents grid structure connection, and then the contact area of raw material is larger, and heating effect is better.

[0022] In the utility model, the rotatable connecting position of connecting rod 8 left end and crank 9 deviates from the rotation axis of crank 9, and then the movement of connecting rod 8 can be driven through the rotation of crank 9.

[0023] In the utility model, the left side and the right side of electric heating net 7 are connected with plate structure, the plate structure is slidably embedded on the side wall of feeding hopper 6, and then electric heating net 7 contacts with the side wall of feeding hopper 6 through the plate structure, avoiding that electric heating net carries raw material outward.

[0024] In the utility model, extruder body 1 is the extrusion cylinder structure of extruder, and extruder body 1 has heating function, which is the extruder body in the prior art.

[0025] Through the personnel of the field, all electrical components in the case and the power supply matched with them are connected through wires, and appropriate controllers should be selected according to actual conditions to meet the control requirements, and the specific connection and control sequence should be completed according to the working order between the electrical components in the following working principle, and the detailed connection means is the known technology in the field, and the working principle and process are mainly introduced below, and the electrical control is not described.

[0026] In the embodiment:

[0027] In work, through power motor 5 drive screw extrusion shaft 4 rotation, and then to the extruder body 1 in the raw material through discharge port 3 extrusion, through the feeding hopper 6 is added, raw materials after heating by electric heating net 7 preheating to extruder body 1 feeding, in power motor 5 work, power motor 5 through a number of bevel gear 10, two bevel gear 11 drive crank 9 rotation, crank 9 rotation drive connecting rod 8 movement, connecting rod 8 movement drive electric heating net 7 reciprocating motion in feeding hopper 6, and then promote the raw material above electric heating net 7 downlink, avoid electric heating net 7 to the raw material caused by blockage.

[0028] It should be noted that in this document, relationship terms such as first and second are used merely to distinguish one entity or action from another, without necessarily requiring or implying that these entities or actions are in any way mutually exclusive or in any way arranged or ordered in a particular manner. Also, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, so that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, the statement "comprises one... limited element, does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the stated element.

[0029] Although the embodiments of the present application have been shown and described, it is understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A twin-screw plastic extruder, comprising an extruder body (1), a mounting frame (2), a discharge port (3), a spiral extrusion shaft (4), a power motor (5), a feeding hopper (6), an electric heating net (7), a connecting rod (8), a crank (9), a first bevel gear (10), and a second bevel gear (11), characterized in that: The mounting frame (2) is provided with an extruder body (1), a discharge port (3) is provided at the right end of the extruder body (1), a spiral extrusion shaft (4) is provided in the extruder body (1), two spiral extrusion shafts (4) are connected by gear engagement, a power motor (5) is provided on the mounting frame (2), an output end of the power motor (5) is connected to the spiral extrusion shaft (4), a feeding hopper (6) is provided on the extruder body (1), and the feeding hopper (6) is provided on the extruder body (1). A multi-layer electric heating net (7) is slidably inserted on the hopper (6), the left end of the electric heating net (7) is rotatably connected to a connecting rod (8), the left end of the connecting rod (8) is rotatably connected to a crank (9), the crank (9) is rotatably mounted on the extruder body (1), the lower end of the crank (9) is connected to a No. 1 bevel gear (10), the No. 1 bevel gear (10) is engaged with a No. 2 bevel gear (11), and the No. 2 bevel gear (11) is fixedly sleeved on the output end of the power motor (5).

2. The twin-screw plastic extruder according to claim 1, characterized in that The electric heating network (7) is a grid-like structure formed by connecting electric heating tubes in a grid structure.

3. The twin-screw plastic extruder according to claim 1, characterized in that: The rotatable connection position between the left end of the connecting rod (8) and the crank (9) deviates from the rotation axis of the crank (9).

4. The twin-screw plastic extruder according to claim 1, characterized in that: The left and right sides of the electric heating net (7) are connected with plate-like structures, and the plate-like structures are slidably embedded in the side walls of the feeding hopper (6).

5. The twin-screw plastic extruder according to claim 1, characterized in that: The extruder body (1) is the extrusion barrel structure of the extruder.

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