Special screw for high-precision deep wear-resistant steel large molding machine

Abstract

The utility model discloses a special high-precision deep wear-resistant steel screw rod for a large-scale molding machine, which comprises a main body section, a tail section and a connecting part, the main body section is provided with screw flights, the rear end of the main body section is provided with a connecting stud, the front end of the tail section is embedded with an inner screw tube for connecting the stud, and the inner screw tube and the tail section are in screw joint with each other. Extension threads are respectively arranged on the peripheral wall of the rear end of the main body section and the peripheral wall of the front end of the tail section, and the connecting part is screwed on the extension threads; according to the utility model, the main body section and the tail end are screwed and matched, so that the assembly and the maintenance are convenient, and the connecting part is connected to the outside to increase the mounting compatibility. And the characteristics of wear resistance, corrosion resistance and oxidation resistance are added for the multi-layer structure, the structure is reasonable, the whole is firm, and the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of screws, and particularly relates to a special screw for a large plastic machine made of high-precision deep wear-resistant steel. Background Art

[0002] The existing high-precision screws specially used for large plastic machines on the market have a fixed structure. For example, the screw of Xuanhao Machinery, model XHJX, due to its single structure, has poor wear resistance and is prone to damage as a whole. Therefore, it needs to be replaced as a whole, which is very troublesome. Content of the Utility Model

[0003] The purpose of the utility model is to provide a special screw for a large plastic machine made of high-precision deep wear-resistant steel, so as to solve the problems put forward in the above background art.

[0004] The utility model provides the following technical scheme: a special screw for a large plastic machine made of high-precision deep wear-resistant steel, which is characterized in that: it includes a main body section, a tail section and a connecting component. The main body section is provided with screw edges, a connecting stud is arranged at the rear end of the main body section, and an internal screw tube for connecting the stud is embedded at the front end of the tail end, and they are screwed together. Extension threads are respectively arranged on the peripheral walls of the rear end of the main body section and the front end of the tail section, and the connecting component is screwed on the extension threads;

[0005] The main body section, the tail section and the connecting component all include a multi-layer structure, which are respectively a base alloy and a surface alloy. The surface alloy covers the outside of the base alloy, and the surface alloy is respectively a wear-resistant and corrosion-resistant alloy and a self-fusing alloy from the inside to the outside.

[0006] Preferably, the length of the connecting stud is the same as the length of the internal screw tube.

[0007] Preferably, the extension threads include extension thread one and extension thread two, and the connecting component includes an internal screw connection sleeve and a baffle arranged along the outer periphery of the internal screw connection sleeve.

[0008] Preferably, the threads arranged inside the internal screw connection sleeve are screwed and assembled with the extension thread one and the extension thread two.

[0009] Preferably, the wear-resistant and corrosion-resistant alloy is tungsten carbide.

[0010] Preferably, the self-fusing alloy is nickel-based alloy and cobalt-based alloy.

[0011] The beneficial effect of the utility model is: the screwing fit of the main body section and the tail end is convenient for assembly and maintenance, and the connecting component is connected externally to increase the matching of installation. And the application has the characteristics of wear resistance, corrosion resistance and oxidation resistance due to its multi-layer structure, with reasonable structure, firm as a whole, and improved service life. Description of the Drawings

[0012] Figure 1Schematic structural view of the utility model

[0013] Figure 2 Schematic structural view of the main body section

[0014] Figure 3 Schematic structural view of the tail section

[0015] Figure 4 Schematic structural view of the connecting component

[0016] Figure 5 is Figure 1 Schematic structural view of the multi-layer structure of

[0017] In the figure: main body section 1, spiral rib 11, connecting stud 12, tail section 2, internal screw tube 21, extended thread one 22, extended thread two 23, connecting component 3, internal screw connection sleeve 31, baffle 32, multi-layer structure 4, base alloy 41, surface alloy 42, wear-resistant and corrosion-resistant alloy 43, self-fusing alloy 44. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0019] Please refer to Figures 1-5 , the technical solution provided by the present utility model: a special screw for a large-scale plastic machine made of high-precision deep wear-resistant steel. Aiming at the problem that the special high-precision screw for large-scale plastic machines in the existing market has a fixed structure, due to the single internal structure of this screw, the wear resistance is poor and the whole is easy to be damaged. Therefore, it needs to be replaced as a whole, which is very troublesome. This application not only improves the fixed structure of the whole screw, but also shapes the whole screw into a more wear-resistant and corrosion-resistant characteristic. Therefore, the screw of this application includes a main body section 1, a tail section 2 and a connecting component 3. The main body section 1 is provided with spiral ribs 11, a connecting stud 12 is arranged at the rear end of the main body section 1, and an internal screw tube 21 for connecting the stud 12 is embedded at the front end of the tail section 2, and they are screwed together. The length of the connecting stud 12 is the same as the length of the internal screw tube 21. A screwed structure is formed.

[0020] The circumferential walls at the rear end of the main body section 1 and the front end of the tail section 2 are respectively provided with extended threads, and the connecting component 3 is screwed on the extended threads; the extended threads include an extended thread one 22 and an extended thread two 23, and the connecting component 3 includes an internal screw connection sleeve 31 and a baffle 32 arranged along the outer circumference of the internal screw connection sleeve 31. The threads arranged inside the internal screw connection sleeve 31 are screwed and assembled with the extended thread one 22 and the extended thread two 23.

[0021] Furthermore, the screw rod in the present application has a structure with high-precision deep wear resistance and is also corrosion-resistant, making it more durable in use. Specifically, it lies in the multi-layer structure 4 of the screw rod. The main body section 1, the tail section 2, and the connecting component 3 all include the multi-layer structure 4, which are respectively a base alloy 41 and a surface alloy 42. The surface alloy 42 covers the outside of the base alloy 41. The base alloy 41 can be made of stainless steel. The surface alloy 42 is respectively a wear-resistant and corrosion-resistant alloy 43 and a self-fusing alloy 44 from the inside to the outside. The wear-resistant and corrosion-resistant alloy 43 is made of tungsten carbide. Tungsten carbide can enhance wear resistance, corrosion resistance, and increase the service life. The self-fusing alloy 44 is made of nickel-based alloy and cobalt alloy. The nickel-based alloy has high strength and certain oxidation and corrosion resistance at high temperatures. The cobalt alloy has characteristics such as high bending strength, compressive strength, impact toughness, and elastic modulus.

[0022] The working principle of the present application is that during use, the connecting component is screwed onto the main body section. The main body section is screwed and assembled through the connecting stud and the internal screw tube at the tail end, and then the connecting component is screwed onto the tail section backward. The screw rod of the present application has a multi-layer structure, which is firm and has structures such as high-precision deep wear resistance. It is convenient to install and easy to maintain.

[0023] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A special screw for large plastic injection molding machines made of high-precision deep wear-resistant steel, characterized in that: It includes a main body section, a tail section and a connecting component. The main body section is provided with screw ribs, a connecting stud is arranged at the rear end of the main body section, and an internal screw tube for connecting the stud is embedded at the front end of the tail end. They are screwed together with each other. Extended threads are respectively arranged on the peripheral wall at the rear end of the main body section and the peripheral wall at the front end of the tail section. The connecting component is screwed on the extended threads; The main body section, the tail section and the connecting component all include a multi-layer structure, which are respectively a base alloy and a surface alloy. The surface alloy covers the outside of the base alloy. The surface alloy is respectively a wear-resistant and corrosion-resistant alloy and a self-fluxing alloy from the inside to the outside.

2. The high-precision deep wear-resistant steel special screw for large plastic machines according to claim 1, characterized in that: The length of the connecting stud is the same as the length of the internal screw tube.

3. The high-precision deep wear-resistant steel special screw for large plastic machines according to claim 1, wherein: The extended threads include extended thread one and extended thread two. The connecting component includes an internal screw connection sleeve and a baffle arranged along the outer periphery of the internal screw connection sleeve.

4. The high-precision deep wear-resistant steel large plastic machine special screw according to claim 3, characterized in that: The threads arranged inside the internal screw connection sleeve are screwed and assembled with the extended thread one and the extended thread two.

5. The high-precision deep wear-resistant steel large plastic machine special screw according to claim 1, characterized in that: The wear-resistant and corrosion-resistant alloy used is tungsten carbide.

6. The high-precision deep wear-resistant steel large plastic machine special screw according to claim 1, characterized in that: The self-fluxing alloy used is a nickel-based alloy and a cobalt-based alloy.

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