RU54846U1 - MACHINE FOR CONTACT SPOT WELDING OF THE ARMATURE - Google Patents

Abstract

The utility model relates to the field of welding, and more specifically to machines for resistance spot welding of reinforcement. The essence of the utility model is that, in order to increase productivity, the feeding mechanism is equipped with an additional pneumatic cylinder located in the contact zone at an angle to the horizontal plane, and the cutting mechanism contains a stop and is located in such a way that the distance from the central technological axis to the edge of the knife is the distance from the central technological axis to the stop. 1 s.p. f-ly; 4 ill.

Description

The utility model relates to the field of welding, and more specifically to machines for resistance spot welding of reinforcement. It can be used to make gratings.

A well-known automatic line for the manufacture of gratings containing a frame, a bay holder, a correct device, a welding unit, a feed mechanism in the form of a pneumatic cylinder with a gripper and a cutting mechanism with a chopping knife (see, for example, patent RU 2062676 according to class B 21 F 27/10, for 1996).

It is closest to the proposed utility model in terms of technical nature and the number of common features, which is why it is accepted as the closest analogue.

The disadvantages of the known device are: low productivity, significant technological time for the manufacture of the frame.

The problem, the solution of which the presented utility model is aimed at, is: increasing productivity, reducing the technological time of manufacturing the frame, and improving the quality of products.

Technical result: from the use of a utility model is to increase productivity to one welding cycle in 2 seconds, which is 30 welds per minute

The technical result is achieved due to the fact that in a machine containing a frame, a bay holder, a correct device, a welding unit, a feed mechanism in the form of a pneumatic cylinder with a grip and a cutting mechanism with a chopping knife, according to the proposal, the feed mechanism is equipped with an additional pneumatic cylinder located in the contact area at an angle to the horizontal plane, and the cutting mechanism contains a stop and is located in such a way that the distance a from the central technological axis to the chopping edge of the knife is equal to state b from the central technological axis to the stop.

The applicant has not found sources of information containing the same general set of features specified in the utility model formula.

The utility model is illustrated by drawings, where

Figure 1 - shows a top view of the machine;

Figure 2 is the same side view;

Figure 3 - shows the zone of cutting and welding from above;

Figure 4 is also a side view.

The machine for contact spot welding of valves includes a frame 1, a leveling device 2, a bay holder 3, a feeding mechanism 4, a cutting mechanism 5, a welding unit 6, a collet gripper 7, a limit stop 8, a gripper 9, mounted on the rod of an additional pneumatic cylinder 10, located at an angle to the horizontal plane, the guides 11, the electrodes 12 of the welding unit 6 and the gripper 13 for the transverse bars of the reinforcement, the guides 14. The feed mechanism 4 includes a pneumatic cylinder 15 for removing the finished reinforcing mesh. The machine has a central technological axis 16.

Machine for spot welding reinforcement works as follows.

The reinforcing wire from the bay holder 3, with the help of the feeding mechanism 4, gets into the correct device 2, located on the frame 1, where it is straightened with the help of rolls. Then, with the collet grips 7, the reinforcement is stretched to the limit stop 8. After that, the fastening in the gripper 9 is made by a pneumatic cylinder 10, located at an angle to the horizontal plane. Through guides 11 transverse reinforcing bars are fed into the welding zone. The cutting mechanism 5 is located in the contact zone, so that the distance a from the central technological axis 16 to the stop 8 corresponds to the distance b from the central technological axis 16 to the chopping edge of the knife. This ensures the production of workpieces of the required size. Capture 9 moves the severed reinforcing billet under the electrodes 12, they are lowered and the welding process occurs. As soon as the electrodes are lowered, the gripper 9 returns to its original position and the cycle of feeding the reinforcing wire is repeated. The grip 13 of the feeding device 4, after raising the electrodes 12, moves along the guides 14 a portion of the welded frame by a predetermined step, after which the grip 13 returns to its original position. At this point, the billet of the reinforcing wire has already been chopped off and fed by a gripper 9 under the electrodes 12 - the welding cycle is repeated again.

Thus, a combination of two technological operations is achieved:

- dressing, cutting and supply of reinforcement to the contact zone is carried out simultaneously with welding and moving the welded section of the frame.

Thus, a significant reduction in the production time of manufactured frames is achieved and their quality is improved.

Using the proposed utility model will improve productivity in the manufacture of reinforcing bars.

Claims (1)

A machine for resistance spot welding of reinforcement, comprising: a frame, a bay holder, a straightening device, a welding unit, a feeding mechanism in the form of a pneumatic cylinder with a grip and a cutting mechanism with a chopping knife, characterized in that the feeding mechanism is equipped with an additional pneumatic cylinder located in the contact zone under angle to the horizontal plane, and the cutting mechanism contains a stop and is located so that the distance from the Central technological axis to the chopping edge of the knife is equal to the distance from ntral technological axis to the stop.