SU1142244A1 - Line for manufacturing three-dimensional reinforcing cages - Google Patents

Abstract

1. LINE FOR MANUFACTURING SPATIAL ARMATURE FRAMEWORKS, containing spotting, welding with intermediate electrodes placed on the foundation, interposing guides for longitudinal reinforcement and a supply mechanism for transverse reinforcement, in front of them, in order to increase the production rate of frameworks and lines equipped with drive clamps fixed perpendicular to the spot-welding masks, perpendicular to the guide for the longitudinal reinforcement, feed mechanism transverse reinforcement is in the form disposed between the guide for the longitudinal reinforcement drive bogie with conductor mounted thereon with possibility of horizontal movement, maschiny for spot welding are mounted symmetrically on outer sides of said guide and jig provided with holes for driving the latches. 2. The lines for the manufacture of frameworks according to claim 1, characterized in that, in order to ensure the welding of bulk frameworks of different nomenclature, the working surfaces of the intermediate electrodes of each mask for spot welding are skewed. 3. The lines for the manufacture of carcasses under item 1, characterized in that the drive carriage is provided with axles mounted at its ends, and the jig is equipped with forks attached to it with the possibility of interaction with said axes.

Description

The invention relates to welding technology and can be used in the manufacture of bulk reinforcement cages of reinforced concrete products.

A known line for the manufacture of spatial reinforcement cages, comprising a machine for welding a flat mesh, a machine for welding a spatial framework with an intermediate electrode, step-feed mechanisms and a conveyor for mixing, cage elements assembly 1.

The known line is complex, energy intensive and metal consuming. When fabricating spatial frameworks on it, manual revision is required using welding tongs.

Closest to the invention is a line for the manufacture of spatial reinforcement cages, comprising a welding unit with an intermediate electrode placed on the foundation, guides for the longitudinal reinforcement located in front of the welding unit, and a transverse reinforcement supply mechanism 2.

On the well-known welding line, volumetric reinforcement blocks are made with a constant clamp of the transverse frames and it is impossible to weld blocks with openings, for example, with door frames. Therefore, the blocks obtained on these lines are semi-finished products and are additionally refined by hand with the HELP of welding tongs. This doubles the labor costs of manufacturing them and reduces the productivity of the line.

In addition, blocks with a constant distance between the upper and lower rods of the frameworks can be manufactured on known lines. The changeover of the lines to the production of other reinforcing blocks requires the replacement of all intermediate electrodes of the line, which is laborious and leads to an idle line.

The purpose of the invention is to increase productivity and reduce the labor intensity of making frames.

The goal is achieved by the fact that the lines for the manufacture of spatial reinforcement cages, containing spot welding machines with intermediate electrodes placed on the foundation, intermediate guides for the longitudinal reinforcement and transverse reinforcement mechanism, positioned on the foundation in front of the spot welding machines, positioned in front of them, perpendicular to the guides for the longitudinal reinforcement, the transverse reinforcement feed mechanism is designed as a spacer between the guides for longitudinal reinforcement of a driven carriage with a conductor mounted on it with the possibility of horizontal movement, spot welding machines are mounted

symmetrically on the outer sides of the said guides, and the condator is provided with openings for driving clips.

In addition, the working surfaces of the intermediate electrode electrodes of each spot welding machine are made1; e1 are skewed.

The drive carriage is equipped with axles mounted at its ends, and the jig is equipped with forks attached to it with the possibility of interaction with the said axles.

FIG. 1 shows the proposed line, a general side view; FIG. 2 - also in the plan; in fig. 3 is a view A of FIG. one; in fig. 4 shows the electrodes of the welding machine 5 in FIG. 5 shows the node I in FIG. one; in fig. 6-9 - flow chart; in fig. 10 is a section BB in FIG. 9; in fig. 11- section BB in FIG. 9.

The line is located on foundation 1 and consists of a welding unit 2, guides 3 for longitudinal reinforcement placed in front of the welding unit 2, a feed mechanism 5 for transverse reinforcement and clamps 7 and 8, mounted coaxially in front of the welding unit 2, perpendicular to the guides 3 .

Welding unit 2 includes two welding machines 9 and 10 with intermediate electrodes 11 located between the upper movable 12 and lower stationary 13 electrodes. The drive of the movable electrodes 12 consists of a pneumatic cylinder 14, on the rod of which the rocker arm 15 is pivotally fixed, in contact with the outer upper surface of the electrodes 12, which is spherical. To the bottom

the electrodes 13 summed electrical tires 16.

Intermediate electrodes 11 are pivotally attached to the frame of welding machines with the help of spring-loaded levers 17.

0 Electrodes 11 are made with beveled working surfaces to ensure constant contact during welding with the upper and lower reinforcing bars at different distances between them. The guides 3 are in the form of spring-loaded roller bearings 18 fixed on the uprights 19.

The mechanism 5 for feeding transverse reinforcement 6 consists of a driving carriage 20 (actuator 21, for example, a chain). The trolley 20 has a ski 22, which interacts with the limit switch 23 of the mechanism for controlling the stopping of the trolley 20 fixed on the foundation 1.

On the trolley 20 mounted jig 24. Trolley 20 is made in the front and rear

5 parts with horizontal axles 25, and a jig 24 with forks 26 spanning the horizontal axes 25 of the carriage 20. Such a connection allows the inductor 24 to move relative to the carriage 20 by the length of the axles 25.

The jig 24 consists of two mirrored beams with forks 27, in which the stack-, transverse reinforcement 6.

The clips 7 and 8 are conical rods of the pneumatic cylinders mounted on racks 28 in front of the welding unit 2 perpendicular to the guide 3. The conductor beams 24 in the lower part are made with holes 29 for the rods of clamps 7 and 8. The distance between the holes 29 is selected in accordance with the pitch of transverse reinforcement 6.

Longitudinal and transverse reinforcement are prefabricated l-shaped longitudinal 4 and transverse 6 reinforcement cages.

Linie works as follows.

Before starting work, the carriage 20 is retracted to the extreme left position relative to welding unit 2 (Figs. 1 and 2). The guides 3 are laid with longitudinal reinforcement cages 4. Next, the extreme right forks 27 of the conductor 24 are laid across: rebar frameworks 6. Then the chain drive 21 of the trolley 20 is turned on, and the latter is mixed with the conductor 24 and the reinforcement 4 and b to the welding node 2 until the stop of the ski 22 in the limit switch 23. Thus, the transverse b and longitudinal 4 reinforcement cages fall into the welding zone. To ensure accurate adjustment of the reinforcement b, the welding electrodes automatically include clamps 8 and 7, and the tapered rods of the pneumatic cylinders slide forward into the corresponding holes 29 of the conductor 24, moving the latter along the trolley 20 to the right or left due to the length of the horizontal axes 25 along which the forks 26 of the conductor 24 move. Since the distances between the holes 29 are equal to the pitch of the transverse reinforcement cages 6, the welded assemblies exactly fall under the electrodes 11-13 of the welding machines 9 and 10.

The intermediate electrodes 11, under the deistriction of the springs, come into contact with the upper and lower branches of the reinforcement cages 4 and 6, resting abutted surfaces against them. The actuator 14 is turned on and welding is performed.

The upper electrodes 12 of both welding machines fall down and press on the upper connections of the rods of the longitudinal 4 and transverse reinforcement cages and also move down the intermediate electrodes 11, which in turn squeeze the lower connections of the longitudinal 4 and transverse 6 reinforcement cages. In this way, the welding circuit is closed and welding occurs when the current is switched on.

The welding mode is provided by the automatic welding unit 2. Next, turn off the drive 14 and turn on the drive 2G of the carriage 20, which moves in the longitudinal direction one step to the right, and the cycle repeats.

After the entire spatial frame has been fabricated, the carriage 20 with the conductor 24 is moved beyond the welding unit 2 where the frame is removed. Next, the mechanism 21 of the carriage 20 is turned on and it returns to its original position, moving to the left. In this line, the longitudinal movement of the spatial frame is carried out in the jig 24 when the latter moves only in one direction along the guides 30, the jig 24 with the trolley 20 returns to its original position only after the finished spatial frame has been removed. This is ensured by the presence in the line of the mechanism 5 for feeding the transverse reinforcement cages b and the actuator 21, for example chain, which have the possibility of large step movements in one direction (for example, the width of the door opening). The maximum displacement (schag) of the transverse reinforcement per cycle in the prototype is not more than 400 mm, in the proposed line this step is not limited within the dimension of the spatial framework. To change the distance between the upper and lower reinforcement cages 4, for example from 1820 mm to 2570 mm, in the proposed line, the guides 3 for the longitudinal reinforcement 4 are made duplicated on one side, and the machine 9 is made movable in the direction perpendicular to the displacement of the spatial reinforcement cage . The movement of the machine 9 is carried out on the carriage 31 from the pneumatic cylinder 32.

The welding of spatial frames with openings is ensured by the fact that the mechanism 5 for feeding the transverse reinforcement frames b consists of a drive carriage 20 (drive 21, for example, chain) and has the possibility of large (for example, door width) spacing movement of the carriage 20 with conductor 24 one side. In addition, it is possible to weld reinforced cages necessary for reinforcing the panel area at the doorway.

Bent L-shaped transverse reinforcement cages 6 are placed with one shelf in paired forks 27 in the same way as flat reinforcement cages. The second shelf of the L-shaped reinforcement cage remains free (Fig. 1). In Fig. Figures 2 and 3 show how longitudinal bent L-shaped reinforcement cages 4 are placed in roller supports 18 placed on racks 19 of guides 3. Fixed longitudinal reinforcement cages 4 are thus provided by the mutual arrangement of roller supports 18. To ensure the placement of frameworks with variable diameter longitudinal branches of the roller bearings are spring-loaded and adjustable in size of the gap between them. The changeover of the line to other sizes is carried out by moving the skis 22 to the places of the supposed stopping of the trolley 20 with a conductor 24 carrying welded curved L-shaped cages. The openings 29 of the beams 33 of the conductor 24 are arranged accordingly. In the manufacture of the beams 33 of the conductor 24, the holes 29 should be placed according to the general nomenclature of the spatial frameworks and are located opposite the transverse reinforcement cages 6 to ensure their welding with the longitudinal reinforcement 4 frameworks for installing them under the electrodes 11-13 (welding machines 9 and 10). In this case, it is possible to overlap the holes 29, as well as their frequent location too, which can make it impossible to manufacture the beams 33. In this case, the beams 33 can be made, for example, interchangeable. The welding of spatial frames with openings is ensured, firstly, by the presence of forks 27 on the conductor 24, arranged according to the wire of the transverse reinforcement frames 6, including those reinforcing into the area of the panel near the doorway; secondly, due to the presence of a mechanism 5 for moving transverse reinforcement cages 6 with a drive 21, for example chain, which has the possibility of a large schagovogo movement in the direction of movement of the welded spatial frame; thirdly, the ability to accurately install the jig 24 under the electrodes 11-13 of the welding machines 9 and 10, since the jig 24 is connected to the trolley 20 via forks 26 and axles 25 belonging to the trolley 20 and allowing the jig 24 to move by the difference of the axle length 25 and the thickness of the forks 26 (40 mm in the working drawings) When a command is sent to move the conductor 24 with reinforcement cages 4 and 6 to the weld zone, the latter stops using the stop of the ski 22 and the limit switch 23 with a certain tolerance. The exact installation under the welding electrodes 11-13 of the machines 9 and 10 is carried out by automatic drive clamps 8 and 7, including pneumatic cylinders with conical brushes. When extending the rods forward, they interact (| with their conical part with the holes 29 in the beams 33 of the conductor 24 and shift the latter to the right or left relative to the bed level 20 due to the specified movable node (axis 25 - fork 26) connecting the carriage 20 and the conductor 24. V In the proposed line, the passage of branches of the longitudinal reinforcement cages of different diameter is ensured that the supports 18 are spring-loaded and the distance between them is adjustable. The transverse reinforcement cages 6 of a certain length are fed to the paired forks 27 and under the electrodes 11-1 3 mashin 9 and 10 are frontal, the frontal supply provides better line performance, since the frame feeding path is shorter, simpler and more reliable in operation. In addition, the transverse rods in the bent frameworks do not prevent it from being fed under the electrodes. the lines of the conductor being moved on the carriage and the drive clamps allow the manufacture of spatial reinforcement frames of full readiness with other doorway armature that do not require additional welding with welding tongs, which is significant to increase the productivity of the line. The longitudinal placement of the transverse reinforcement feed mechanism on the drive carriage increases the productivity of the line by combining the time of its laying and welding, and also allows the production of a unified reinforcement of bent frameworks. Making the surfaces of the intermediate electrodes fast speeds reduces the time required for readjustment of the welding unit, to release reinforcement cages of another size, and provides free entry of the intermediate electrode into the welded elements, which significantly reduces the labor intensity. The connection of the conductor with the trolley through an axle-fork assembly creates the possibility of some longitudinal mutual displacement for precise fixing of the conductor in the welding assembly. To reduce the cost of retooling the conductor and ensuring the quality of the reinforcement cage, the distance between the conductor openings for the drive locks corresponds to the distance between the transverse reinforcement frames.

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Claims (3)

1. LINE FOR PRODUCTION OF SPATIAL REINFORCED FRAMES, containing placed on the foundation machines for the spot. welding with intermediate electrodes, guides for longitudinal reinforcement located in front of them and a feed mechanism for transverse reinforcement, characterized in that, in order to increase the productivity of manufacturing frames, the line is equipped with FIG. / wife mounted on the foundation in front of the machine for spot welding drive clamps perpendicular to the guides for longitudinal reinforcement, the feed mechanism of the transverse reinforcement is made in the form of a drive car placed between the guides for longitudinal reinforcement of the trolley with a conductor mounted on it with the possibility of horizontal movement welds are mounted symmetrically from the outer sides of the said rails, and the conductor is made with holes for drive clamps. 2. Line for the manufacture of frames according to π. 1, characterized in that, in order to ensure welding of volumetric frames of various nomenclature, the working surfaces of the intermediate electrodes of each spot welding machine are made beveled. 3. Line for the manufacture of frames according to π. 1, characterized in that the drive trolley is equipped with axes mounted at its ends, and the conductor is equipped with forks mounted on it with the possibility of interaction with these axes.