TWM638696U - Friction welding rebar coupler - Google Patents

Abstract

A friction-welded steel bar connector, used for continuous connection between two steel bars, which includes one or two male continuous joints and a female continuous joint that can be screwed together, and the male continuous joint and the female continuous joint can be respectively friction welded on the The ends of the two steel bars, or two male continuous joints are friction welded to the ends of the two steel bars respectively. During friction welding, the male continuous joints and the female continuous joints are respectively used to remove the coating on the end faces of the steel bars with the filing action surface of the friction welding part. At the same time, it can also remove the oxide layer or carbon deposit layer on the friction welding part of the male and female connectors, so that the male and female connectors can be friction welded with the steel bar Get better weld stability.

Description

Friction welding rebar coupler

The present invention relates to a rebar coupler, especially a friction welded rebar coupler which can be fixed on the ends of two rebars by friction welding so that the two rebars can be connected together.

The rebar coupler is an object used to connect two rebars. The currently known rebar coupler includes a male rebar connector and a female rebar connector. Internal friction welding, so that the two steel bars are continuously connected by screwing the male continuous joint and the female continuous joint. Alternatively, the steel bar connector can also be a combination of two male continuous joints and one female continuous joint, and the ends of the two male continuous joints are respectively friction welded to the ends of the two steel bars, so that the two steel bars are matched by the two male continuous joints A screw connection combination of a female connector for continuous connection.

The aforementioned steel bars and steel bar couplers are all prefabricated objects, stored in the workshop, and then transported to the construction site for use when they are used. However, in order to facilitate the identification of the material and specification of the steel bar, a paint marking layer is usually applied to the end of the steel bar, and the steel bar and the male and female joints of the steel bar coupler are easy to produce spots on the surface during the manufacturing process. Carbon layer, when the steel bar and the male and female joints of the steel bar coupler are in stock, the surface often generates an oxide layer, etc. Therefore, when the male and female joints of the steel bar coupler are friction-welded with the ends of the steel bar respectively, it is difficult to completely remove the paint marking layer and oxidation on the end surface of the steel bar due to the plane-to-plane friction between the two. layer or carbon deposit layer, as well as the oxide layer or carbon deposit layer on the friction welding parts of the male and female continuous joints, etc., resulting in the paint mark layer, oxide layer or carbon deposit layer remaining on the steel bar and the male and female continuous joints. In the welded body, it affects the consolidation effect of the friction welding between the male joint, the female joint and the steel bar, and even does not meet the standard of the tensile strength test.

The purpose of this new model is to provide a friction-welded steel bar connector, which solves the problem that it is difficult to completely remove the painted marking layer at the end of the steel bar when the male or female joint of the existing steel bar connector is friction-welded with the end of the steel bar. And the oxide layer or carbon deposit at the end of the steel bar and the friction welding part of the male continuous joint and the female continuous joint affects the welding effect between the male continuous joint, the female continuous joint and the steel bar.

In order to achieve the above-mentioned purpose, the friction-welded steel bar coupler proposed by this new model is used for the continuous connection between two steel bars. The friction-welded steel bar coupler includes: a public joint, which includes a screw joint and a friction welding portion at one end of the length direction of the male joint, the friction welding portion has a filing surface; Welding part, the friction welding part has a filing action surface; wherein, both the male continuous joint and the female continuous joint are respectively friction welded to the ends of the two steel bars by the friction welding part, and by means of the friction welding part The rasp-grinding action surface rasps the end face of the steel bar and melts it gradually to be integrated with the end of the steel bar.

In order to achieve the above-mentioned purpose, another friction-welded steel bar coupler proposed by this new model is used for continuous connection between two steel bars. The friction-welded steel bar coupler includes: two public joints, each of which is The two ends of the continuous joint in the length direction are respectively a screw joint and a friction welding part. The threads of the screw joints of the two public joints are mutually opposite threads, and the friction welding parts form a filing action surface. The two public joints are respectively friction-welded with the ends of the two steel bars by the friction welding parts, and are connected to the ends of the steel bars by filing and progressively melting the end faces of the steel bars by the filing action surface. and a female continuous joint, which includes two screw hole parts, the two screw hole parts are respectively extended inwardly from the two ends of the length direction of the female continuous joint, and the two screw hole parts are mutually opposite threads , and are respectively matched with the threaded parts of the two male continuous joints.

With the creation of this new type of friction welding rebar coupler, during friction welding, the male coupler and the female coupler respectively use the filing surface of the friction welding part to remove the painted marking layer, oxide layer or At the same time, it can also remove the oxide layer or carbon deposit on the friction welding parts of the male and female connectors, so that the male and female connectors can obtain better welding stability after friction welding with steel bars .

1: Friction welding steel bar connector

10: Male connector

11: screw joint

12: Friction welding part

121: Filing and grinding action surface

20: Female connector

21: screw hole

22: Friction welding part

221: File grinding action surface

1A: Friction-welded rebar coupler

10A: male connector

11A: screw joint

12A: Friction welding part

121A: Filing and grinding action surface

10B: male connector

11B: screw joint

12B: Friction welding part

121B: Filing and grinding action surface

20A: female connector

21A: Screw hole

21B: screw hole

3A: Rebar

30A: end

3B: steel bars

30B: end

4: Push drive mechanism

5: Rotary drive mechanism

Fig. 1 is a three-dimensional schematic diagram of the first embodiment of the new friction welding steel bar coupler.

Fig. 2 is a three-dimensional schematic diagram of the second embodiment of the new friction-welded steel bar coupler.

Fig. 3 is an end plan view of the friction welding part of the female connector in the first embodiment of the friction-welded steel bar connector shown in Fig. 1 .

Fig. 4 is an end plan view of the friction-welded part of the female connector in the second embodiment of the friction-welded steel bar connector shown in Fig. 2 .

FIG. 5 is a schematic flow diagram of the friction welding process between the male joint and the steel bar of the first embodiment of the friction-welded steel bar coupler shown in FIG. 1 .

Fig. 6 is a schematic flow diagram of the friction welding process between the female connector and the steel bar of the first embodiment of the friction-welded steel bar coupler shown in Fig. 1 .

Fig. 7 is a schematic diagram of the process of connecting the steel bar after the male joint and the female joint are respectively friction-welded with the steel bar in the first embodiment of the friction-welded steel bar connector shown in Fig. 1 .

Fig. 8 is a three-dimensional schematic view of the third embodiment of the new friction welding steel bar coupler.

Fig. 9 is a schematic diagram of the third embodiment of the friction-welded steel bar connector shown in Fig. 8, in which the male joint is friction-welded with the steel bar and then combined with the female joint for screw connection to continue the steel bar.

As shown in Fig. 1, Fig. 2 and Fig. 8, it discloses several embodiments of the new friction welding type steel bar adapter 1, 1A. It can be seen from the embodiments disclosed in these drawings that the friction welding type Rebar connector 1, 1A is composed of a male connector 10 and a female connector 20, or two male connectors 10A, 10B and a female connector 20A, and enables two steel bars 3A, 3B to pass through the friction welding The steel bar coupler 1 and 1A are continuously connected together. The specific structures of the various embodiments of the new friction-welded steel bar adapter 1 and 1A will be further described below.

As shown in Figure 1 and Figure 2, the friction welded rebar coupler 1 includes a male connector 10 and a female connector 20, the male connector 10 includes a threaded part 11 and a friction welded part 12. The threaded part 11 is located at one end of the male joint 10 in the length direction, the friction welding part 12 is located at the other end of the male joint 10 in the length direction, and the female joint 20 includes a screw hole part 21 and a friction welding part 22. The screw hole portion 21 extends from one end of the female connector 20 in the longitudinal direction to the other end (ie extends inward), and the friction welding portion 22 is located at the other end of the female connector 20 in the longitudinal direction.

As shown in Fig. 1 to Fig. 4, the friction welding parts 12, 22 of the male continuous joint 10 and the female continuous joint 20 all form the filing action surfaces 121, 221, and the filing action surfaces 121, 221 can be Through rolling extrusion, cutting, or molding and other processing methods, a large number of concave-convex straight lines or cross lines (also known as knurling, knurling, embossing) are formed, and the friction welding part 12 , 22 to form the structure of the filing action surface 121, 221, so that it has the properties of the filing material like a file or sandpaper. Preferably, the depth of the roll pattern is set according to the diameter and material of the friction-welded steel bar. In addition, the concave and concave filing action surfaces 121, 221 formed by the friction welding parts 12, 22 can reduce the carbon deposit and oxide layer on the surface of the friction welding parts 12, 22 of the male joint 10 and the female joint 20 themselves. .

As shown in Figures 1, 5 and 6, the friction welding part 12 of the male joint 10 is friction welded to the end of a steel bar 3A, and the friction welding part 22 of the female joint 20 is friction welded to another steel bar 3B. During friction welding, the male continuous joint 10 and the female continuous joint 20 are installed on the rotary drive mechanism 5 respectively, the steel bars 3A, 3B are installed on the push drive mechanism 4, and the ends of the steel bars 3A, 3B 30A, 30B are Push to the friction welding part 12, 22 of the male continuous joint 10 or the female continuous joint 20, and at the same time the male continuous joint 10, the female continuous joint 20 is driven to rotate at a high speed, and is pushed to the male joint 3A, 3B ends 30A, 30B. When the friction welding part 12, 22 of the joint 10 or the female joint 20 is used, the ends 30A, 30B of the steel bar 3A, 3B are applied to the concave-convex structure of the filing action surface 121, 221 of the friction welding part 12, 22. Filing action, and use the high temperature generated by the friction between the two to gradually melt the friction welding parts 12, 22 and the ends 30A, 30B of the steel bars 3A, 3B to weld and consolidate them into one. Afterwards, as shown in FIG. 7 , the two steel bars 3A, 3B are connected together through the friction-welded steel bar coupler 1 through the screw connection combination of the male joint 10 and the female joint 20 .

As shown in the embodiment shown in FIG. 8 , the friction-welded steel bar connector 1A includes two male connectors 10A, 10B and a female connector 20A, and the two male connectors 10A, 10B each include a threaded portion 11A, 11B. And a friction welding part 12A, 12B, the threaded part 11A, 11B is located at one end of the length direction of the male joint 10A, 10B, and the friction welding part 12A, 12B is located in the length direction of the male joint 10A, 10B At the other end, the threaded parts 11A, 11B of the two male joints are reverse threads, and the end faces of the friction welding parts 12A, 12B form filing surfaces 121A, 121B. The female connector 20A includes two coaxially opposite screw hole portions 21A, 21B. The two screw hole portions 21A, 21B respectively extend inwardly from both ends of the female connector 20A in the longitudinal direction. The two screw hole portions 21A, 21B are mutually opposite threads, and are respectively matched with the threaded parts 11A, 11B of the two male connectors 10A, 10B.

As shown in the embodiment shown in FIG. 8 , the filing surfaces 121A, 121B of the friction welding parts 12A, 12B can be processed by rolling extrusion, cutting, or molding to form a plurality of concave-convex straight lines or cross lines, etc. The rolling pattern (also known as knurling, knurling, embossing), and the concave-convex structure of the filing action surface 121A, 121B is formed by the friction welding part 12A, 12B, so that it has a filing like a file or sandpaper Material properties, preferably, the depth of the roll pattern is set according to the diameter and material of the steel bar to be friction welded.

As shown in Fig. 8, the embodiment of the friction welding steel bar connector 1A is that the friction welding parts 12A, 12B of the two public joints 10A, 10B are respectively friction welded to the ends of the two steel bars 3A, 3B, and the friction welding The method is generally shown in Figure 5. It is the same as the friction welding method between the friction welding joint and the steel bar of the friction welding type steel bar connector disclosed earlier, that is, during friction welding, the public joint is installed on the rotary drive mechanism. The steel bar is installed in the push drive mechanism, the end of the steel bar is pushed to the friction welding part of the public joint, and at the same time the public joint is driven to rotate at a high speed, and when the end of the steel bar is pushed to the friction welding part of the public joint , using the structure of the filing action surface of the friction welding part to apply filing action to the end of the steel bar, and using the high temperature generated by the friction between the two to gradually melt the friction welding part and the end of the steel bar to weld and consolidate them into one. Afterwards, as shown in Figure 9, the two steel bars 3A, 3B are connected by the screw connection combination of the two male continuous joints 10A, 10B and the female continuous joint 20A, so that the two steel bars 3A, 3B are connected through the friction welding steel bar joint 1A connect together.

Through the above description, with the creation of the aforementioned friction welding steel bar coupler, during the friction welding, the male joint and the female joint are respectively used to file the filing surface of the friction welding part to remove the paint marking layer on the end surface of the steel bar. At the same time, it can also remove the oxide layer or carbon deposit on the friction welding parts of the male and female joints, so that the male and female joints can be friction-welded with steel bars to obtain better Welding stability.

1: Friction welding steel bar connector

10: Male connector

11: screw joint

12: Friction welding part

121: Filing and grinding action surface

20: Female connector

21: screw hole

22: Friction welding part

221: File grinding action surface

Claims (4)

A friction-welded steel bar coupler is used for the continuous connection between two steel bars. The friction-welded steel bar coupler includes: a male connector comprising a threaded portion and a friction welded portion at one end of the male connector in the longitudinal direction, the friction welded portion having a filing surface; and A female continuous joint, which includes a screw hole portion and a friction welding portion located at one end of the female continuous joint in the length direction, the friction welding portion has a filing action surface; wherein, Both the male joint and the female joint are respectively friction-welded with the ends of the two steel bars by the friction welding part, and the end faces of the steel bars are filed and gradually melted by the filing action surface to be connected with each other. The ends of the steel bars are welded together. The friction-welded steel bar coupler according to claim 1, wherein the filing action surface forms a plurality of concave-convex straight-grained or cross-grained roll lines. A friction-welded steel bar coupler is used for the continuous connection between two steel bars. The friction-welded steel bar coupler includes: Two public joints, the two ends of the length direction of each of the public joints are respectively a threaded part and a friction welding part, the threads of the threaded parts of the two public joints are opposite threads, and the friction The welding parts all form a filing action surface, and the two public joints are respectively friction-welded with the ends of the two steel bars by the friction welding part, and the ends of the steel bars are filed through the filing action surface. end faces and progressive melting to be integrally welded to said bar ends; and A female continuous joint, which includes two screw hole parts, the two screw hole parts respectively extend inwardly from the two ends of the length direction of the female continuous joint, and the two screw hole parts are opposite threads to each other, and are respectively connected to the The threaded parts of the two male continuous joints match. The friction-welded steel bar coupler according to claim 1, wherein the filing action surface forms a plurality of concave-convex straight-grained or cross-grained roll lines.

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