Device for welding the flat surfaces

 

(57) Abstract:

The invention relates to welding, namely, devices for welding to restore worn flat surfaces. The underlying platform device provided with a bearing plate mounted movably in the horizontal guides that are perpendicular to the horizontal guides. The drive mechanism for reciprocating movement of the base plate is made in the form of a rod. At the free end of the rod is fixed roller with the possibility of contact interaction with a drive Cam mounted on the output shaft of the actuator. The profile of the drive Cam is made in the form of two symmetrical segments of a spiral of Archimedes, joined on the line passing through the starting point of the spiral of Archimedes. This embodiment of the device enables the welding of the flat surfaces with a uniform thickness of the fused layer. 1 C.p. f-crystals, 2 Il.

The invention relates to welding, namely, devices for welding to restore worn flat surfaces.

A device for welding the flat surfaces containing the mechanism of the transverse oscillation elenim planet carrier, connected to the plunger (see and.with. THE USSR 671951, 23 TO 9/04).

In this device surfacing the head, appearing in the work of a crank mechanism, makes the pendulum oscillating movement relative to the clean surface of the product, which does not allow to provide a uniform thickness of the fused layer of metal.

It is also known a device for automatic welding, containing the basic platform for fixing surfaced products installed in horizontal guides with the possibility of a reciprocating spring-loaded movement relative to the welding head by means of the drive mechanism kinematically connected to the base platform (see and.with. THE USSR 729012, 23 TO 9/04).

The disadvantage of this device is the limited functionality, in particular, the inability of the cladding flat surfaces due to the absence of this device, mechanism for moving the product in the step of welding.

The technical result of the claimed device is the possibility of welding the flat surfaces while providing a uniform thickness of the fused layer of metal.

This is achieved what I surfaced products installed in horizontal guides with the possibility of a reciprocating spring-loaded movement relative to the welding head by means of the drive mechanism kinematically connected to the base platform, the base platform is equipped with a bearing plate mounted movably in the horizontal guides mounted on the base platform can be moved by the movement mechanism in the step of welding, horizontal guides of the carrier plate are perpendicular to the horizontal rails to the underlying platform, the drive mechanism for reciprocating movement of the base plate is made in the form of a rod, one end of which is rigidly associated with the base platform, at the free end of the rod is fixed roller with the possibility of contact interaction with a drive Cam, fixed to the output shaft of the actuator. In addition, the profile of the drive Cam is made in the form of two symmetrical segments of a spiral of Archimedes, joined on the line passing through the starting point of the spiral of Archimedes.

Mobility surfaced products relative to the welding head in two mutually perpendicular garmarna the thickness of the fused layer of metal.

Comparative analysis of the prototype shows that the proposed device for welding of the flat surfaces is characterized by the fact that the underlying platform is equipped with a bearing plate mounted movably in the horizontal guides mounted on the base platform, with the ability to move through the mechanism move surfacing, with horizontal guides for the carrier plates are perpendicular to the horizontal rails to the underlying platform, the drive mechanism for reciprocating movement of the base plate is made in the form of a rod, one end of which is rigidly associated with the base platform, at the free end of the rod is fixed roller with the possibility of contact interaction with a drive Cam, fixed to the output shaft of the actuator. In addition, the profile of the Cam is made in the form of two symmetrical segments of a spiral of Archimedes, joined on the line passing through the starting point of the spiral of Archimedes. This difference from the prototype provides an opportunity to talk about the relevance of the proposed solutions to the patentability criteria of "novelty". The comparison of the proposed device is not only the prototype, but also with other technical Reto allows to make a conclusion on compliance with the conditions of patentability of an invention - "inventive step".

In Fig. 1 shows a General view of a device for welding the flat surfaces of Fig.2 - profile of the drive Cam.

Device for welding the flat surfaces contains the base platform 1 (Fig.1) installed with the possibility of reciprocating movement relative to the welding head 2 horizontal rails 3, mounted on the frame 4. The base platform 1 provided with a bearing plate 5 to secure it surfaced products 6. The carrier plate 5 mounted movably by means of the mechanism 7 to move the cladding relative to the welding head 2 horizontal rails 8 mounted on the base platform 1 and perpendicular to the horizontal guide rails 3 for the base platform 1. Mechanism 7 to move the carrier plate 5 to the step of welding is performed in a pair of "lead screw - nut". To the base platform 1 is rigidly attached to the rod 9, is placed in the guide sleeve 10, mounted on the frame 4. At the free end of the rod 9 is fixed roller 11 with the possibility of contact interaction with a drive Cam 12 mounted on the output shaft 13 of the actuator 14. On the rod 9 between the roller 11 is of the roller 11 with a drive Cam 12. At the same time to ensure uniform speed surfaced articles 6 relative to the torch head 2 profile of the drive Cam 12 is in the form of two 12.1 and 12.2 (Fig.2) symmetrical segments of a spiral of Archimedes, United along the line A-A1passing through the initial point Of the spiral of Archimedes.

Device for welding of the flat surfaces is as follows.

On the carrier plate 5 (Fig.1) fix designed for surfacing product 6. Include the actuator 14. The output shaft 13 of the actuator 14 rotates the drive Cam 12 in the direction of the arrow, thereby driving the Cam 12, the contact interacting with their section 12.1 (Fig.2) increasing the radius of curvature through the roller 11 with the rod 9, moves uniformly along the horizontal rails 3 base platform 1 together with the carrier plate 5 and fixed on it by article 6, clutching placed on the rod 9 between the roller 11 and the guide sleeve 10, the compression spring 15.

Surfacing the head 2, while the deposition process is stationary and at a given level relative to the plane surfaced products, produces the cladding metal layer in the form of longitudinal equal thickness and the required length is authorized on the product 6 to be moved along the horizontal guide rails 8 on a necessary step for applying the next longitudinal seam welding. The drive Cam 12, making the second right away, contact begins to interact with his rod section 12.2 of decreasing radius of curvature, while under the influence of a spring 15, which begins to spring up, the rod 9 is moved in its guide sleeve 10 in the opposite direction and pulls the base platform 1 and fixed thereto the carrier plate 5 with the product 6. In the process of this movement, which is completed with a second right away of the Cam 12, surfacing head 2 performs overlaying another longitudinal seam, even thickness and any length. In further cycles subsequent welding of longitudinal seams on a flat surface 6 again.

1. Device for welding the flat surfaces containing a basic platform for fixing surfaced products installed in horizontal guides with the possibility of a reciprocating spring-loaded movement relative to the welding head by means of the drive mechanism kinematically connected to the base platform, wherein the base platform is equipped with a bearing plate mounted movably in the horizontal guides mounted on the base platform guides for the carrier plates are perpendicular to the horizontal rails to the underlying platform, the drive mechanism for reciprocating movement of the base plate is made in the form of a rod, one end of which is rigidly associated with the base platform, at the free end of the rod is fixed roller with the possibility of contact interaction with a drive Cam mounted on the output shaft of the drive.

2. The device under item 1, characterized in that the profile of the drive Cam is made in the form of two symmetrical segments of a spiral of Archimedes, joined on the line passing through the starting point of the spiral of Archimedes.

 

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FIELD: processes for making large-size thick-sheet orthotropic plates of carbon low-alloy steels in different branches of industry, particularly for bridge building.

SUBSTANCE: method comprises steps of relative orienting members of orthotropic plates; tack welding oriented members by means of non-consumable tungsten electrode in mixture of shield gases Ar (95 - 97)% + (3 - 5%) CO2 ; performing automatic continuous-seam welding and then trimming surface of welded seam. It allows simplify method for making welded large-size thick-sheet orthotropic plates of carbon low-alloy steels.

EFFECT: lowered labor consumption, shortened time cycle for making enhanced-quality plates, improved reliability of welded structures.

6 dwg, 1 ex

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