High-wear-resistance machine barrel screw

Abstract

The utility model discloses a high-wear-resistance machine barrel screw. The problems that an existing machine barrel screw is not high in abrasion resistance, and the service life is affected are mainly solved. The corrugated pipe is characterized in that the first section comprises a first wave-shaped surface (221) opposite to the second section, the second section comprises a second wave-shaped surface, and the first wave-shaped surface and the second wave-shaped surface are oppositely arranged. According to the high-wear-resistance machine barrel screw, the smooth curved wavy surface is in contact with materials, no sharp part exists, the stress concentration condition is reduced, and the wear resistance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of screw rod machine, concretely relates to a high wear -resisting machine cylinder screw rod. BACKGROUND

[0002] Screw rod is an important part of extruder, the function of extruder is to add raw material and additive to the cylinder according to proportion, and the mixture becomes molten polymer through the rotation of screw rod in the cylinder and the heating of the cylinder, then the rotation of screw rod drives the mixture to move forward to extrude from the head continuously with certain pressure and speed, and becomes the required plastic part.

[0003] The commonly used screw rod is provided with mixing section, and oil wiping through groove is arranged on the screw rib for better mixing, and the conventional through groove is directly provided with straight groove on the screw rib, and the sharp part on the screw rib is prone to stress concentration, which affects service life. UTILITY MODEL CONTENT

[0004] In order to overcome the insufficient of the background art, the utility model provides a high wear -resisting machine cylinder screw rod, mainly solves the problem of weak wear resistance of the current machine cylinder screw rod, and affects service life.

[0005] The technical scheme of the utility model provides,

[0006] A high wear -resisting machine cylinder screw rod, including the pole body, the pole body is equipped with the convex rib of helical shape, the convex rib includes mixing section, the mixing section includes oppositely arranged first section and second section, interval groove is equipped between the first section and the second section, the first section includes the first wave -shaped surface opposite the second section, the second section includes the second wave -shaped surface, and the first wave -shaped surface and the second wave -shaped surface are oppositely arranged.

[0007] The pole body includes detachably connected first pole body and second pole body, the first pole body is equipped with the mixing section, and the second pole body is equipped with melting section.

[0008] The first pole body is equipped with the boss, and the second pole body is equipped with the groove that is screwed with the boss.

[0009] The circumferential outer wall of the convex rib is equipped with wear -resisting layer.

[0010] The wear -resisting layer is made of tungsten carbide.

[0011] The thickness of the wear -resisting layer is 1mm~1.2mm.

[0012] The pole body is made of 20CrMnTi alloy steel.

[0013] The utility model discloses a high wear -resisting machine cylinder screw rod, through smooth curved wave -shaped surface to contact with material, there is no sharp part, reduce the stress concentration condition, increase wear resistance. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the schematic view of one embodiment of the utility model.

[0015] Figure 2 It is Figure 1 It is the enlarged schematic view of A in the middle.

[0016] Figure 3 It is the partial explosion schematic view of one embodiment of the utility model.

[0017] Figure 4 It is the partial structure schematic view of one embodiment of the utility model. DETAILED DESCRIPTION

[0018] The utility model discloses a high wear -resisting machine cylinder screw rod, through smooth curved wave -shaped surface to contact with material, there is no sharp part, reduce the stress concentration condition, increase wear resistance.

[0019] In this embodiment, as shown in the drawing, the rod body includes detachably connected first rod body 11 and second rod body 12, the first rod body is equipped with the mixing section, and the second rod body is equipped with a melting section.

[0020] In this embodiment, as shown in the drawing, the first rod body is equipped with boss 111, and the second rod body is equipped with recess 121 that is threadedly connected with the boss. It can be replaced, and it is not necessary to replace the whole.

[0021] In this embodiment, as shown in the drawing, the circumferential outer wall of the convex rib is equipped with a wear -resisting layer. Further increase the force of wear -resisting.

[0022] In this embodiment, as shown in the drawing, the wear -resisting layer is made of tungsten carbide.

[0023] In this embodiment, as shown in the drawing, the thickness of the wear -resisting layer is 1mm~1.2mm.

[0024] In this embodiment, as shown in the drawing, the rod body is made of 20CrMnTi alloy steel.

[0025] In the description of the utility model, it is understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0026] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0027] The embodiments described with reference to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as limiting the utility model. The embodiments should not be regarded as limiting the utility model, but any improvement made on the basis of the spirit of the utility model should be within the protection scope of the utility model.

Claims

1. A high-wear-resistance barrel screw, comprising a rod body (1) provided with helical ribs (2), the ribs comprising a mixing section (21) comprising oppositely arranged first and second sections (22, 23) with a spacing groove (24) therebetween, characterized in that: the first section comprises a first wave-shaped surface (221) opposite the second section, and the second section comprises a second wave-shaped surface (231), the first and second wave-shaped surfaces being oppositely arranged. The rod body comprises a first rod body (11) and a second rod body (12) detachably connected, the first rod body being provided with the mixing section, and the second rod body being provided with a melting section.

2. A high wear resistant barrel screw as claimed in claim 1, characterized in that: The first rod body is provided with a boss (111), and the second rod body is provided with a groove (121) threadedly connected with the boss.

3. A high wear resistant barrel screw as claimed in claim 2, characterised in that: The circumferential outer wall of the ribs is provided with a wear-resistant layer.

4. A high wear resistant barrel screw as claimed in claim 3 wherein: The wear-resistant layer is made of tungsten carbide.

5. A high wear resistant barrel screw as claimed in claim 4 wherein: The thickness of the wear-resistant layer is 1mm-1.2mm.

6. A high wear resistant barrel screw as claimed in claim 5 wherein: The rod body is made of 20CrMnTi alloy steel.

7. A high wear resistant barrel screw as claimed in claim 6 wherein: ​

Images