SU893457A1 - Automatic machine for assembling arm welding to chain link - Google Patents

Description

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The invention relates to the welding industry, in particular to contact relief welding and can be used in the manufacture of chain conveyors.

An automatic machine for assembling and welding scrapers with a chain link, mounted on a frame a movable electrode holder with an electrode, a stationary electrode, a chain feeding mechanism and a mechanism for fixing and orienting the chain 1.

A disadvantage of the known automaton is the placement of the mechanism of fixation and orientation outside the weld zone, which requires separate execution of operations and reduces productivity.

Also known is a machine for assembling and welding a bracket with a chain link. The machine contains chain feed mechanisms mounted on the frame, made in the form of drive carriages with grippers, a brake device for tensioning the chain, an electrode device, a welding pressure drive, a slide device for feeding the bracket, and a locking mechanism and orientation of the chain 21.

Yedoe tkrm izvestnogo automaton is that the mechanism of fixation and orientation of the chain is equipped with punches installed on the spring-loaded traverse, alternately (depending on the sign of the opening chain in step), coming into contact with the two closest to the welded, equally oriented links chain, which worsens the conditions of assembling and welding of the bracket with the chain link, since when the total deviation exceeds the production of chain links located between

15 adjacent brackets of the size of the rounded section of the link, possibly when the mechanism of fixation and orientation of the chain is triggered, the punches hit the level of the link current and not the rounded part of the link, which leads to jamming of the mechanism of fixation and orientation of the chain, with assembly of the chain impossible because of the need for additional

25, the quality control of the assembly is reduced by the amount of water;

The purpose of the invention is to improve the quality of assembly and welding of the bracket with a chain link and increase productivity.

The goal is achieved by the fact that in an automatic machine for assembling and welding a bracket with a chain link, there is a chain feed mechanism installed in the frame, made in the form of drive carriages with grippers, a brake device for feeding the bracket and a fixing and orientation mechanism, a fixing mechanism and orientation of the chain in the form of zakradplennukh on the frame on both sides of the electrode device of the pair of clamps, between which are placed interacting with them adjustable screw stops and installed with the possibility reciprocating movement along the longitudinal axis of the chain the sliders interacting through the friction clutches with the driving carriages, and the clamps are fixed to the mentioned naked slider.

FIG. 1 shows schematically the proposed welding machine; in fig. 2 shows a section A-A in FIG.

The welding machine and the bracket assembly with a chain link contains the chain feed mechanism 2 installed on the base 1, the brake device 3, the electrode device 4, the welding pressure drive 5, the slide valve b for feeding the bracket to the welding zone (not shown conventionally in Fig. 1) , the mechanism 7 for fixing and orientation of the chain, the mechanism 8 for chain cutting, the guide roller 9 and the tray 10.

The chain feed mechanism 2 is designed to move the chain to the step of welding the brackets and consists of a drive 11, which is capable of moving with a rail 12 mounted on one of the drive (for example, left) carriages 13 rigidly interconnected by a pull 14. On the carriages 13 there are fixed rails 15, meshing with gears 16 fixed on the shafts 17 on which the gears 18 freely interacting with the halves Ftam 19 through the brake linings 20. The left of the semi-couplings 19 are mounted on the shafts 17 on the keys with the possibility of axial movement and are pressed : Springs 21 and nuts 22 and 23 to the gear 18. Nuts 22 m and 23 serve to control the force of engagement between the brake pads 20. Pinions 1B are engaged with; slats 24, mounted on the right 25 and left 26 sliders.

The locking mechanism and the orientation of the chain 7 consists of sliders 25 and 26 mounted in guides 27 mounted on the frame 1. On the slide 25 and 26, spring-loaded chain grips 28 and adjustable screw stops 29 interacting with the clamps 30 mounted on the frame are installed one.

The braking device 3 is designed to create the force required to eliminate the chain sagging as it is moved by the mechanism.

2 chain feeds. The proposed machine for assembling and welding the bracket with a chain link works in the following way.

Pre-weldable chain charged to brake

3 on the spring-loaded grippers 28, the guide roller 9. The brackets are loaded into the hopper of the slide gate device 6.

After switching on the automatic device, the gate device 6 is activated and delivers the bracket to the welding zone on the electrode device 4. The welding pressure drive 5 actuates, the chain and the bracket are clamped in the electrode pressure. device 4, welding is performed.

During welding, the slide blocks 25 and 26 by the chain feed mechanism 2 are moved to the extreme right position, while the grippers 28 slide along the chain.

After welding is completed, the drive 11 of the chain feeding mechanism 2 is turned on and moves the carriages 13 to the extreme right position. In this case, gears 12 rotate gears 16 with shafts 17 and coupling half 19. With springs 21 and nuts 22 and 23, the torque is transmitted through brake pads 20 to gears 18, which through rails 24, in guides 27 move the sliders 25 and 26 to the leftmost position In this case, the grippers 28 capture the chain, and move it to the step of welding the brackets.

The torque values transmitted through the brake linings 20 to the gear wheels 18 are adjusted by springs 21 and nuts 22 and 23, while the force on the right slider 25 is greater than the force of the chain in the brake device 3, and on the left 26 it is less than what is provided chains per step with the right slider 25 and tension of the chain in the weld zone with the left slider 26. The stroke of the sliders 25 and 26 is adjusted by screw stops 29, which interact with the latches 30. At a constant movement of the carriages 13, the stroke of the sliders 25 and 26 due to the gear 18 slipping relative to the coupling halves 19 defines em with the position of adjustable screw stops 29, clamps 30 and, for the left slider 26, the actual size of the welded chain, taking into account the deviation of the manufacture of chain links between adjacent welded brackets.

The right retainer 30 and the adjustable screw stop 29 for the right slide 25 are installed depending on the number of chain links between adjacent welded brackets.

Claims (2)

The position of the right slider 25 in the edges is located within the mean deviation of the production of the chain link. The ability to adjust the position of the sliders with hooks for the chain relative to the electrode device, through clamps and adjustable screw stops, and to correct the stroke of the sliders depending on the actual welding step of the brackets, by means of friction clutches, allows for precise orientation of the chain link relative to the welded grub and an electrode device, which eliminates the possibility of emergency situations, improves the quality of assembly and welding, and improves productivity. The use of the proposed automaton dp assembly and welding of an arm with a chain link allows to improve the quality of assembly and welding, eliminate the possibility of emergency situations and increase productivity by 1012%. The invention of an assembly and welding machine for an arm with a chain link, comprising a chain feeding mechanism mounted on a frame, spreaded as drive carriages with grippers, a chain tensioning brake device, an electrode device, a welding pressure drive, a slide gate device for feeding the bracket and a locking mechanism and chain orientation, characterized in that., in order to increase productivity and quality, the mechanism of fixation and orientation. of the chain is made in the form of paired clips fixed on the frame on both sides of the electrode device, between which are placed interacting with them adjustable screws and stops installed with the possibility of reciprocating movement along the longitudinal axis of the chain sliders interacting through friction clutches with driving carriages, and clamps mounted on the crawlers mentioned. Sources of information taken into account in the examination 1. The author's certificate of the USSR 551142, cl. B 23 K 11 / 10,12.08.75, 2. USSR author's certificate number 649524, cl. B 23 K 11/10, 14.12.77 (prototype ;. / 7 -