RU198164U1 - Device for surfacing curved surfaces - Google Patents

Abstract

The utility model relates to welding production, in particular to installations for surfacing bimetallic wear-resistant bandages, used to protect against abrasive wear of the surfaces of mill rolls, in the mining, cement and other industries. A device for surfacing curved surfaces contains a surfacing head 8, mounted with the possibility of movement with a given step. The objective of the utility model is to create a universal, simple in design, mobile surfacing device that allows the use of various power sources and surfacing with a given displacement step. The surfacing head 8 is fixed with the possibility of replacement in the mounting unit 7. The mounting unit of the welding head is located on the free end of the retractable device made in the form of a hollow shaft 6. The retractable device is located in the housing 1 of the welding device. The mechanism for moving the drawer is made in the form of a lead screw 4 with a nut 5. The lead screw is connected to the drawer by means of a flywheel 3. The predetermined step of moving the drawer is not more than 500 mm. The technical result from the use of the proposed device for surfacing curved surfaces is to simplify the design and operation of the device, the possibility of deposition on various planes and the possibility of using various power sources, as well as to ensure the use of any type of feed device for the welding wire (on different welding heads) and the possibility of surfacing with wire feed from large-volume packaging, which allows for the continuity of the surfacing process. 3 ill.

Description

The utility model relates to welding production, in particular to installations for surfacing of bimetallic wear-resistant bandages used to protect against abrasive wear of the surfaces of mill rolls, in the mining, cement, metallurgical industries, etc.

The prior art devices for surfacing, for example, an installation for the manufacture of rolls and plates having a carbide coating according to patent No. 2424350 IPC С23С 4/18; B23K 28/02, published on 07.20.2011, The installation includes surfacing means in the coating area, support means for supporting the base onto which the metal coating is applied using surfacing means in the coating area, and a milling device installed for machining surface. The device has a complex structure and allows surfacing only on cylindrical surfaces.

There is also known a device for surfacing cylindrical parts on a lathe according to the patent No. 2699605 IPC B23P 6/00, published 06.09.2019, where the machine is equipped with a device for surfacing cylindrical parts. The device is used for surfacing on the surface of small-sized cylindrical products with subsequent turning. The disadvantage of this device is also the complexity of the design and the limited range of processed products.

A device for surfacing curved surfaces according to the patent for utility model No. 16092, IPC VK 9/00, publ. 12.12.2000, in which there is a rotator, an electric motor for feeding the electrode wire, an electric motor for changing the position of the welding-surfacing head, a temporary relay, and a movable stand, on which a self-aligning elastic roller that acts as a movable sensor is mounted. The disadvantage of this device is the design complexity and the ability to move the welding head along the guide in only one direction.

A number of surfacing installations are also known, for example, a universal surfacing installation (of the IZRM-5 type) for surfacing of cylindrical parts with self-shielding wire. The installation consists of: a surfacing table on which a universal rotator is installed with a chuck from a lathe for fixing and rotation with the welding speed of the surfaced parts; a rotary column, along the console of which the surfacing machine moves with marching and welding speed; a back rack (headstock) for preloading and holding the surfaced part. The swivel column is equipped with a manual locking mechanism and an electric drive mechanism for vertical movement of the console. (http://www.weldcom.ru/catalog/ustanovki_dlya_naplavki/universalnaya_naplavochnaya_ustanovka_tipa_izrm5/) The disadvantage of this installation is also the design complexity and

The closest in technical essence is the technical solution presented in utility model No. 152597, IPC V23K 9/04, publ. 06/10/2015, (prototype) according to which, the installation provides automatic deposition of a wear-resistant layer on the base in the form of a rotating cylindrical shell, which is then straightened. The installation comprises a rotator, surfacing heads, movable carriages and a carriage guide, while the surfacing filler heads are mounted on movable carriages, which are located on the guide with the ability to move parallel to the axis of the built-in cylindrical shell discretely with a given step or specified speed. The disadvantage of the presented device is that it can only be used stationary, as well as the complexity of the design and the inability to replace the welding head.

The objective of the proposed utility model is to create a universal, simple in design, mobile surfacing device that provides the ability to use various power sources and the possibility of surfacing in vertical and horizontal planes with a given step of surfacing.

The problem is solved by placing a universal welding head in the mount, mounted on the shaft of a retractable device mounted inside the body of the device for surfacing, as well as due to the hinged installation of the body of the device for surfacing on a stand.

The technical result from the use of the proposed device for surfacing curved surfaces is to simplify the design and operation of the device, the possibility of deposition in various planes, the ability to use various power sources, in addition, to ensure the use of any kind of feed device for the welding wire (on different welding heads) and the possibility of surfacing with the filing of wire from large-volume packaging, which allows for the continuity of the surfacing process.

The device for surfacing curved surfaces is illustrated with graphic materials.

In FIG. 1 - shows a diagram of a device for surfacing;

In FIG. 2 - shows a diagram of the head mount, front view;

In FIG. 3 is a diagram of a head attachment unit, side view.

The device for surfacing curved surfaces is a rectangular housing 1, inside of which there is a lead screw 2, with a threaded thread and a retractable device 3. Using a nut 4, the screw 2 is rigidly connected to the retractable device 3, which is a hollow shaft (pipe). The flywheel 5, by means of a bevel gear 6, is connected to the lead screw 2, on which the nut 4 is fixed. The nut moves freely along the spindle when the screw rotates and moves the drawer 3. A universal mount 7 of the welding head 8 is fixed on the free end of the shaft 8. The mount 7 of the head 8 is equipped with an intermediate adapter for fastening the head to the flange of the drawer (Fig. 2,3) that provides the possibility of replacing the head, as well as fixing the welding heads of various types, which allows you to use any source of welding power (welding machine). An arm 9 is rigidly fixed to the body of the surfacing device, on which, in turn, a hopper with flux 10 is fixed (Fig. 1). The body of the surfacing device is mounted on a stand 11, which allows the positioning of the welding head 7 in 3 planes. The stand is mounted on hinges on (Fig. Not shown) and has 3 degrees of freedom, which makes it possible to rotate the device in 3 planes: horizontal, vertical and rotation around the axis. The body 1 of the surfacing device is fixed to the bed using a fastener, for example, using bolts or a clamp (not shown in FIG.).

A device for surfacing curved surfaces works as follows.

The housing 1 of the device is mounted on the frame using the mount. The flywheel 5 through the lead screw 2, with the help of the nut 4 fixed on it, moves the drawer 3 with the welding head fixed on it 8. The welding head is moved in the specified (handwheel) mode 0-500 mm, which is the optimal step distance for small mobile surfacing installations producing surfacing, for example, surfaces of roll bandages.

The drawer is fixed by stopping the rotation of the handwheel 5. The maximum step of 500 mm is ensured by the maximum movement of the drawer with the overlay head due to the rotation of the handwheel. The welding head 8 is positioned in the desired position. At the same time, a flux is supplied from the hopper 10, a welding wire is supplied from the drive located outside the device (not shown in FIG.) And a welding operation is performed. In this case, the device for surfacing, pivotally mounted on the stand 11 carries out rotations in the desired direction, and produces surfacing of the surface of the product. The increased stiffness of the retractable device eliminates the vibration of the welding head when moving up to 500 mm. Rigidity is provided by the design of the retractable device, due to the rigidity of the hollow shaft.

The proposed device for surfacing curved surfaces can be mounted on any support, in any desired place and use various types of surfacing (welding heads), as well as produce surfacing with the ability to rotate the head in three planes.

Thus, the task posed to the utility model is solved.

Claims (1)

A device for surfacing curved surfaces, comprising a housing, a surfacing head mounted with the ability to move with a given step, and a mechanism for moving the surfacing head, characterized in that the surfacing head is fixed with the possibility of replacement in the mount located on the free end of the retractable device, made in the form a hollow shaft located in the housing, and the mechanism of its movement is made in the form of a lead screw with a nut rigidly fixed to it, connected to the sliding device by means of a flywheel, while the specified movement step of the sliding device is not more than 500 mm.

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