Laser cladding reinforced alloy screw

Abstract

The invention relates to a laser cladding reinforced alloy screw which comprises a rod body, a screw head fixedly screwed at one end of a screw section and a tail key groove, the rod body comprises a core rod and a screw base layer made of metal alloy, and the metal alloy layer can cover iron-based, nickel-based and cobalt-based alloy or metal ceramic. The metal alloy forms a spiral base layer on the surface of the core rod through laser cladding, and the thickness of the spiral base layer on the cylindrical surface of the core rod is 3-5 mm; the core rod is of a cylindrical structure, a thread is fixedly arranged on the cylindrical surface of the screw base layer, and the thread is cladded on the cylindrical surface of the screw base layer through metal alloy by laser cladding; the screw head is screwed at the front end of the rod body, and the tail key groove is screwed at the rear end of the rod body, so that an assembled structure is formed, maintenance, disassembly, assembly and use are convenient, and use and installation are flexible.

Description

Technical Field

[0001] The invention relates to the technical field of screw rods, and in particular to a laser cladding strengthened alloy screw rod. Background Art

[0002] The screw is one of the important components of the extruder. Its structure and material directly affect its service life and the plasticizing effect of the material.

[0003] The existing utility model patent CN202120718870.8 is a laser-clad alloy screw with an integrated structure, which is not convenient for replacing the screw head and tail groove according to use needs, is not convenient for maintenance and installation, and cannot be used flexibly, which increases the trouble of use and installation. Summary of the invention

[0004] In order to solve the problems in the prior art, the present invention provides a laser cladding strengthened alloy screw.

[0005] The specific technical scheme of the present invention is as follows: a laser cladding strengthened alloy screw, comprising a rod body, a screw head fixedly screwed on one end of a screw segment and a tail groove, the rod body comprising a core rod and a screw base layer made of a metal alloy, the metal alloy layer may include an iron-based, nickel-based, cobalt-based alloy, or a metal ceramic, the metal alloy is laser clad on the surface of the core rod to form a screw base layer, the thickness of the screw base layer on the cylindrical surface of the core rod is 3-5mm; the core rod is cylindrical in structure, the cylindrical surface of the screw base layer is fixedly provided with a thread, the thread is laser clad on the cylindrical surface of the screw base layer through a metal alloy, characterized in that: the rod body comprises a main screw segment and an extended screw segment connected to the front end of the main screw segment, the screw head is screwed on the extended screw segment, and a thread segment is provided at the front end of the extended screw segment; The screw head includes a screw tip and a matching screw section, a polygonal connecting section is arranged between the screw tip and the matching screw section, the screw head is sealingly screwed together through the matching screw section and the threaded section, and the tail groove is sealingly screwed together through the connection part and the rear end of the main screw section.

[0006] Preferably, the extended screw segment has multiple rows of protrusions arranged along its circumference, and the rear end of the extended screw segment is provided with an integral portion connected to the main screw segment to form an integral structure.

[0007] Preferably, the convex particles are round or square in shape.

[0008] Preferably, the screw tip is provided with a plurality of protrusions along its circumference, and grooves are formed between the protrusions.

[0009] Preferably, a screw-mounted connecting pipe is provided at the rear end of the main screw section, and a screw-mounted connecting pipe which cooperates with the screw-mounted connecting pipe is provided at the connecting portion.

[0010] The technical effect of the present invention: The present invention screws the screw head on the front end of the rod body, and screws the tail groove on the rear end of the rod body, forming an assembled structure, which is convenient for maintenance, disassembly, and use, and is flexible to use and install. It solves the problem that the existing utility model patent CN202120718870.8, a laser cladding alloy screw, adopts an integrated structure, which is not convenient for replacing the screw head and the tail groove according to the needs of use, is not convenient for maintenance and installation, and cannot be used flexibly, which increases the trouble of use and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the rod structure; Figure 3 It is a schematic diagram of the screw head structure; Figure 4 1 is a schematic diagram of the extended screw segment structure; Figure 5 Schematic diagram of the tail groove structure; In the figure: rod body 1, main screw section 11, extended screw section 2, convex particle 21, integral part 23, screw head 3, protrusion 32, groove 33, matching screw section 34, polygonal connecting section 35, tail groove 4, connecting part 41, screw-mounted connecting pipe 42, screw-mounted connecting pipe 43. Implementation

[0012] The present invention will be further described below in conjunction with the accompanying drawings. Example

[0013] like Figures 1 to 5 As shown, a laser cladding strengthened alloy screw of the present embodiment includes a rod body 1, a screw head 3 fixedly screwed on one end of the rod body 1 and a tail key groove 4, the rod body 1 includes a core rod and a screw base layer made of a metal alloy, the metal alloy layer may include an iron-based, nickel-based, cobalt-based alloy, or a metal ceramic, the metal alloy is laser clad on the surface of the core rod to form a screw base layer, and the thickness of the screw base layer on the cylindrical surface of the core rod is 3-5mm; the core rod and the tail key groove are an integrally formed structure, the core rod is a cylindrical structure, the cylindrical surface of the screw base layer is fixedly provided with a thread, and the thread is laser clad on the cylindrical surface of the screw base layer through a metal alloy, which has been disclosed in the existing patent CN201920098822.6 A laser cladding strengthened alloy screw.

[0014] In view of the existing utility model patent CN202120718870.8, a laser cladding alloy screw adopts an integrated structure, which is not convenient for replacing the screw head 3 and the tail groove 4 according to the needs of use, is not convenient for maintenance and installation, and cannot be used flexibly, which increases the trouble of use and installation. This application uses a screw-mounted connection installation structure to facilitate the assembly of the screw head 3 and the tail groove 4 at the front and rear ends of the rod body 1, thereby facilitating maintenance and installation and replacement, and increasing the flexibility of selecting different screw heads 3 and tail grooves 4 for different usage scenarios.

[0015] The innovation of this application is that the structure of the laser cladding strengthened alloy screw is improved. The rod body 1 includes a main screw segment 11 and an extension screw segment 2 connected to the front end of the main screw segment 11. The screw head 3 is sealed and screwed on the extension screw segment 2 for easy disassembly. The front end of the extension screw segment 2 is provided with a threaded segment; the extension screw segment 2 has multiple rows of convex particles 21 arranged along its circumference. The multiple rows of convex particles 21 are circular or square. The present application adopts a circular shape. The rear end of the extension screw segment 2 is provided with an integral part 23 connected to the main screw segment 11 as an integral structure, which forms an integral structure with the main screw segment 11.

[0016] The screw head 3 includes a screw tip and a matching screw connection section 34, a polygonal connection section 35 is arranged between the screw tip and the matching screw connection section 34, a plurality of protrusions 32 are arranged along the circumference of the screw tip, and a groove 33 is formed between the protrusions 32, and the screw tip can be designed as a protrusion 32 and a groove 33 in a shape. The screw head 3 is connected to the threaded section 34 by screwing and sealing, and the tail health groove 4 is connected to the rear end of the main screw section 11 through the connecting part 41, and the rear end of the main screw section 11 is provided with a screw connection pipe 42, and the connecting part 41 is provided with a screw connection pipe 43 that is screwed with the screw connection pipe 42. A detachable tail health groove 4 structure is formed.

[0017] In the installation of the present application, the screw head 3 is screwed on the front end of the rod body 1 by screwing, wherein the main screw section 11 and the extension screw section 2 are an integral structure, and the tail groove 4 is screwed on the rear end of the rod body 1. The tail groove 4 and the driving mechanism are coupled to each other for transmission. Its working principle is the same as that of the existing patent, and will not be described in detail here.

[0018] This application is based on the principle of first application and then product. If you have samples, please contact the applicant or inventor. It should be pointed out that the above preferred embodiments are only for illustrating the technical concept and features of the present invention. The purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A laser cladding strengthened alloy screw, comprising a rod body, a screw head fixedly screwed at one end of a screw segment and a tail groove, the rod body comprising a core rod and a screw base layer made of a metal alloy, the metal alloy layer may include an iron-based, nickel-based, cobalt-based alloy, or a metal ceramic, the metal alloy is clad on the surface of the core rod by laser to form a screw base layer, the thickness of the screw base layer on the cylindrical surface of the core rod is 3-5 mm; the core rod is cylindrical in structure, the cylindrical surface of the screw base layer is fixedly provided with a thread, the thread is clad on the cylindrical surface of the screw base layer by laser through a metal alloy, and the characteristics are: The rod body includes a main screw section and an extended screw section connected to the front end of the main screw section, the screw head is screwed on the extended screw section, and a threaded section is arranged at the front end of the extended screw section; the screw head includes a screw tip and a matching screw section, a polygonal connecting section is arranged between the screw tip and the matching screw section, the screw head is sealingly screwed connected by the matching screw section and the threaded section, and the tail health groove is sealingly screwed by setting a connecting part and the rear end of the main screw section.

2. The laser cladding strengthened alloy screw according to claim 1, characterized in that: The extended screw segment is provided with a plurality of rows of protrusions along its circumference, and an integral part connected with the main screw segment to form an integral structure is arranged at the rear end of the extended screw segment.

3. The laser cladding strengthened alloy screw according to claim 2, characterized in that: The convex particles are circular or square.

4. The laser cladding strengthened alloy screw according to claim 1, characterized in that: The screw tip is provided with a plurality of protrusions along its circumference, and grooves are formed between the protrusions.

5. The laser cladding strengthened alloy screw according to claim 1, characterized in that: A screw-mounted connecting pipe is arranged at the rear end of the main screw section, and a screw-mounted connecting pipe which is matched and connected with the screw-mounted connecting pipe is arranged at the connecting portion.

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