Extrusion screw

Abstract

The utility model discloses an extrusion screw. The problems that an existing extrusion screw is only a simple spiral prism, and the extrusion efficiency is not high are mainly solved. The improved structure is characterized in that each rib further comprises a homogenizing section (22), and a chip cutting groove (221) is formed in the front end face, with the material advancing direction as the reference, of each homogenizing section; and the melting section (23) is arranged behind the homogenizing section and is provided with a through groove (231) which is arranged in a penetrating manner. The utility model provides an extrusion screw which is provided with a chip groove and a through groove, so that circulation of grinding materials is facilitated, and the extrusion efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of extruders, in particular to an extrusion screw. Background Art

[0002] Extruders are used to fully mix and extrude a variety of granular raw materials and then output them. They are mainly used in the field of plastic or rubber manufacturing machinery. At present, in the domestic plastic processing industry, the output of the extruder determines the efficiency of the production line, and the energy consumption of the extruder accounts for most of the energy consumption of the production line.

[0003] The extrusion screw is an important component in the extruder, which greatly affects the extrusion efficiency and extrusion quality of the extruder. The existing extrusion screw is just a simple spiral prism, and the extrusion efficiency is not high. Utility Model Content

[0004] In order to overcome the shortcomings of the background technology, the utility model provides an extrusion screw, which mainly solves the problem that the existing extrusion screw is just a simple spiral prism and the extrusion efficiency is low.

[0005] The technical solution of the utility model is:

[0006] An extrusion screw comprises a rod body and a spiral ridge arranged on the rod body, the ridge comprises a feed section and a discharge section, the ridge also comprises a homogenizing section, a front end surface of the homogenizing section based on the material forward direction is provided with a chip groove; a melting section is arranged behind the homogenizing section and is provided with a through groove arranged therethrough.

[0007] The convex ridge and the rod body are an integral structure made of 15CrMoV6 steel.

[0008] The edge of the chip groove is provided with a cutting edge for extruding and cutting materials.

[0009] The rod body also includes a connecting section arranged before the feeding section, and the connecting section is provided with a keyway for linkage connection with a coupling.

[0010] The circumferential outer wall of the connecting section is provided with a plurality of grooves extending along the length direction, and also includes an intermediate sleeve made of elastic material, the intermediate sleeve is arranged between the inner wall of the coupling and the outer wall of the connecting section, and the inner wall of the intermediate sleeve is provided with a second ridge that is engaged with the groove.

[0011] The beneficial effects of the utility model are as follows: the utility model provides an extrusion screw rod, which has a chip groove and a through groove, is convenient for the circulation of the grinding material, and increases the extrusion efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of an embodiment of the utility model.

[0013] Figure 2 for Figure 1 A magnified schematic diagram of center A.

[0014] Figure 3 The figure is a cross-sectional schematic diagram of an embodiment of the utility model when installed with a coupling. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings: As shown in the figure, an extrusion screw includes a rod body 1 and a spiral convex rib 2 provided on the rod body, the convex rib includes a feed section 21 and a discharge section 24, and the convex rib also includes a homogenizing section 22, and the front end surface of the homogenizing section is provided with a chip groove 221 based on the material forward direction; the melting section 23 is provided after the homogenizing section and is provided with a through groove 231. The cutting groove cuts the material at the same time when rotating, so that the material is dispersed in blocks, and the through groove is added in the melting section to make it easier for the material to pass through, thereby increasing the extrusion efficiency.

[0016] In this embodiment, as shown in the figure, the convex ridge and the rod body are an integral structure made of 15CrMoV6 steel.

[0017] In this embodiment, as shown in the figure, the edge of the chip groove is provided with a cutting edge 222 for squeezing and cutting materials. The materials are cut at the same time during rotation to disperse the materials into blocks.

[0018] In this embodiment, as shown in the figure, the rod body further includes a connecting section 20 arranged before the feeding section, and the connecting section is provided with a key groove 201 for linkage connection with a coupling.

[0019] In this embodiment, as shown in the figure, the circumferential outer wall of the connecting section is provided with a plurality of grooves 202 extending in the length direction, and further includes an intermediate sleeve 4 made of elastic material, the intermediate sleeve is arranged between the inner wall of the coupling and the outer wall of the connecting section, and the inner wall of the intermediate sleeve is provided with a second ridge 41 that is engaged with the groove. The gap between the connecting section and the coupling is filled by the elastic member to prevent shaking.

[0020] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0022] The embodiments described with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention. The embodiments should not be regarded as limiting the present invention, but any improvements based on the spirit of the present invention should be within the scope of protection of the present invention.

Claims

1. An extrusion screw, comprising a rod body (1) and a spiral ridge (2) provided on the rod body, wherein the ridge comprises a feed section (21) and a discharge section (24), characterized in that: The ridges also include A homogenizing section (22), wherein a chip groove (221) is provided on a front end surface of the homogenizing section based on the material advancing direction; The melting section (23) is arranged after the homogenizing section and is provided with a through groove (231) extending therethrough.

2. An extrusion screw according to claim 1, characterized in that: The convex ridge and the rod body are an integral structure made of 15CrMoV6 steel.

3. An extrusion screw according to claim 2, characterized in that: The edge of the chip groove is provided with a cutting edge (222) for extruding and cutting materials.

4. An extrusion screw according to claim 3, characterized in that: The rod body also includes a connecting section (20) arranged before the feeding section, and the connecting section is provided with a key groove (201) for linkage connection with a coupling.

5. An extrusion screw according to claim 4, characterized in that: The circumferential outer wall of the connecting section is provided with a plurality of grooves (202) extending in the length direction, and also includes an intermediate sleeve (4) made of elastic material, the intermediate sleeve is arranged between the inner wall of the coupling and the outer wall of the connecting section, and the inner wall of the intermediate sleeve is provided with a second ridge (41) that is engaged with the groove.

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