SU759283A1 - Plant for automatic assembling and multispot welding - Google Patents

Description

The invention relates to mechanical engineering, in particular to installations for automatic assembly and multi-point welding of lattice-type products. .

There are installations for automatic assembly and multipoint welding of products of the type of grids (grids), containing bunkers for longitudinal and transverse parts, welding equipment and mechanisms for feeding parts for 10 assemblies and welding. Similar installations are automatically assembled, welded and; stack products £ ΐ! and th

However, the installation of known design can not be used for the manufacture of finger gratings of the combine, since the structures of the feed mechanisms and the bunkers of parts of takvbs / installations are adapted only for 20 rods, mainly of circular cross section. In addition, the possibility of storing welded gratings (grids) by winding on a drum, as well as the possibility of producing a grating of infinity of 25 finite lengths followed by cutting, leads to the Simple design of the removal mechanism for finished products, which is unacceptable in the manufacture of finger gratings. thirty

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Closest to the invention is an installation for automatic assembly and multipoint welding, containing mounted on the frame

a welding device, bunkers for longitudinal and transverse parts, a movable assembly table with a lodgment for transverse parts, a mechanism for feeding longitudinal parts with at least one grip and a mechanism for removing the finished product. The installation allows you to fully automate the process of assembling, welding and unloading shelves of the refrigerator {s],

The disadvantage of the known installation is the impossibility of automatic assembly and welding of finger gratings of the combine.

The purpose of the invention is the provision of manufacturers finger. Grating combine.

The goal is achieved by the fact that the feed mechanism of the longitudinal parts is provided with hinges; on the frame according to the Number of simultaneously supplied longitudinal parts by ejectors and clamp, made in the form of driving levers, the gripping of this mechanism is made in the form of clamping jaws connected with; the drive is hinged to the movable assembly

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the table can be rotated in a plane perpendicular to the plane of welding of the finger grid, while the bunker of longitudinal parts is made with grooves according to the number of simultaneously supplied longitudinal parts.

The unit is fitted with overhead guides attached to the frame. Bunker lateral parts configured as a platform mounted for reciprocating movement on ramps, ^- a transverse feed mechanism parts formed as fitted to a frame perpendicular to the traveling direction of the lattice and a suction guide mounted on a guide e reciprocating movement .

FIG. 1 shows the installation, appearance, 'in FIG. 2 - hopper for longitudinal cutters with a cutter and gripper in the initial position, longitudinal ₍ section, 'in Fig. 3 - inclined mounting angle, section A-A in Fig. 2; in Fig. 4 g a bunker for longitudinal parts with a cutter and. grip with parts clamped in it, longitudinal section; Fig. 5 - assembly table with grip, longitudinal section, 'in Fig. 6 - the same, in the gripping position in the middle position,' in Fig. 7 - bunker for transverse parts and feeder of these parts, side view? in Fig. 8 - Transmission mechanism of cross parts, rear view; in Fig. 9 - welded bar frontal lattice in isometry; in Fig. 10 a transverse part (cross member ') 7 in Fig. 11 is a longitudinal part (finger).

The installation includes “a welding device 2 installed on the frame 1, a hopper 3 for longitudinal parts (fingers of the finger grid) 4, a bunker 5 for transverse parts (cross member) b, a mechanism 7 for feeding longitudinal parts, a mechanism for feeding transverse parts and a mechanism for removing welded products.

The hopper 3 for longitudinal parts 4 is made in the form of an inclined slide 8 with grooves 9 according to the number of simultaneously (simultaneously) issued parts 4, equipped with a cut-off mechanism. The clipping mechanism (FIGS. 2 and 4) contains a vertically movable tapered cutter plate 10, carrying a copier 11 and a movable clamp 12, which holds the parts 4 on the 'inclined slide 8 in the initial position. The clamp 12 is made in the form of two shoulders of the lever 13, pivotally mounted on the frame 1 and interacting with the cam 11 by means of rollers 14. The plate-cutter 10 is connected by a system of levers 15 with the pneumatic cylinder 16.

The mechanism 7 of the filing of the longitudinal parts made in the form of a grip 17 mounted on an assembly table 18, and the grip 17 is installed, can be rotated in the longitudinal-transverse plane, and provided with a stepped rotation drive made in the form of a pneumatic cylinder 19 with a double stroke. The sponges 20 and 21 of the gripper 17 connect the yen with the rod and the pneumatic cylinder body 22. On the assembly table 18, in its front part there is a lodgment 23 for the transverse part 6. The assembly table 18 is mounted on the frame 1 movably in the longitudinal direction on the rollers 24 and is driven stepper displacement, made in the form of pneumatic cylinders 25 and 26. The total number of strokes of pneumatic cylinders 25 and 26 is equal to the number of rows of welding points.

The bunker 5 for transverse parts 6 is made in the form of a horizontal platform 27 movably mounted on inclined guides 28 mounted on the frame 1. The platform 27 is equipped with a drive made in the form of a pneumatic cylinder 29. The angle of inclination y) of the guides 28 is equal to the angle of inclination of p> foot parts 6 on the platform 27.

In the upper part of the bunker 5 there is an emphasis 30, which limits the vertical movement of the foot of the transverse parts 6.

The feed mechanism of the transverse parts 6 is made in the form of a pneumatic pump 31 mounted movably in the transverse direction on the guides 32 and provided with a drive for reciprocating movement in the form of a reversible rotor-reducer 33.

. Pneumoprime 31 mounted on the frame 1 in such a way that its lower

the part is in the plane of the stop 30, limiting the vertical movement of the stack of parts with platform 27.

The mechanism for removing welded products consists of levers 34 pivotally mounted in the upper part of frame 1. Levers 34 are driven by a backward rotational movement, made in the form of a rack and pinion, the rail 35 of which is connected to the rod 36 of the pneumatic cylinder 37, and the gear wheel 38 is fixed on the shaft of the levers 34. Above the removal mechanism, on frame 1, there is an inclined storage device 39 of welded products. Welding is carried out by movable upper and lower electrodes 40. The interaction of all the drive elements is carried out by the general scheme of automation, including limit switches, etc. elements (fig. not shown).

Before starting work, the bins 3 and 5 are loaded with parts 4 and 6. Transverse. parts 6 are stacked on the platform 27 stop at each other,

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and the longitudinal 4 are installed in the slots 9 of the inclined plane 8. In this case, the longitudinal parts 4 occupy a vertical position, hanging on the flat flange they have (Fig. 11). _five

The following describes the operation of the installation in automatic mode.

When turned on, the pneumatic cylinder 29 moves the platform 27 with the foot of the transverse parts 6 previously laid on it along the guide rails 28 up to the stop 30 and the pneumatic pump 31. The pneumopump 31 starts working simultaneously with the activation of the pneumatic cylinder 29. The upper part 6 in the foot, touching the pneumo pump 31, ^ 5 is grabbed by it ^ while the pneumatic cylinder 29 is turned off and the platform 27 with a foot of parts b returns to its original position, and the gearmotor 33 is switched on by moving the pneumatic actuator 20 with 31 part with the guides 32 along the guides 32. Having reached the required position, the pneumatic pump 31 is turned off, and the part 6 falls into the cradle 23, the assembly table 18, assuming an orientation 25 position.

In parallel with the feeding of the transverse part 6 to the assembly table 18, the longitudinal parts 4 are fed and the grip 17 is taken from the bunker 3. Simultaneously with the activation of the pneumatic cylinder 29, the pneumatic cylinder 16 is activated, which moves the plate-cutter 10 down through the system of levers 15. Together with the plate-cutter 10, the copiers 11 are moved, which take the clamp 12 away from the first row of longitudinal parts 4, freeing them. The released parts 4 slide off the inclined slip 8 and, under the action of their own weight and the continuing downward movement of the slam-shut plate 10, with their lower ends fall between the gripping jaws 20 and 21 of the gripper 17. This engages the cylinder 22 clamping the jaws 20 and 21 , fixing the parts ⁴³ | 4 and the grip 17. Simultaneously with the compression of the jaws 20 and 21, the pneumatic cylinder 16 is removed, returning the slam-shut plate and the clamp 12 interacting with it to its original position. ' 50

In the future, the pneumatic cylinder 19, which rotates the grip 17 with the parts 4 clamped in it in a horizontal position, stacks the parts 4 on the transverse part 55 6 and squeezes them together. After laying the parts 4 and b, the pneumatic cylinders 25 and 26 are successively switched on and the assembled parts 4 and 6 with the assembly table 18 are moved to the welding zone for the required number of steps. The number of steps of the assembly table 18 corresponds to the number of rows of welding points.

In each row, welding parts 4 and b occurs simultaneously. 65

After welding, the assembly table 18 is retracted to its original position. This turns on the pneumatic cylinder 19 and turns the grip 17 together with the product clamped in it in the opposite direction with an intermediate stop in the middle position.

After that, the cylinder 22 expands the jaws 20 and 21 of the gripper 17, freeing the welded product. Simultaneously with the start of operation of the cylinder 22, the cylinder 37 is turned off, which rotates the levers 34 of the removal mechanism, picking up the welded product. In the future, the levers 34 raise the product and drop it onto the accumulator 39. In the final position of the levers 34, the command is given to return the levers and to turn on the pneumatic cylinders 29 and 16, and the next cycle of the installation begins.

The use of the proposed device in combine plants will automate the process of manufacturing finger combine grids.

The calculated economic effect from the use of one installation amounted to 66 thousand rubles.

Claims (2)

Claim 1. Installation for automatic assembly and multi-point welding, containing a welding device mounted on a frame, bunkers for longitudinal and transverse parts, a movable assembly table with a lodgment for transverse parts, a longitudinal part feed mechanism with at least one grip and a mechanism for removing the finished product O and l with the fact that, in order to ensure the manufacture of the combine finger grid, the feed mechanism of the longitudinal parts is provided with articulated hinges on the frame according to the number of simultaneously fed longitudinal etaley fireproof and clamp, made in the form of drive arms, seizure of this mechanism is formed as a clamping. sponges associated with the drive, and mounted on a movable assembly table can be rotated in a plane perpendicular to the plane of welding of the finger grid, and the hopper of longitudinal parts is made with grooves according to the number of simultaneously supplied longitudinal parts. 2. Installation according to claim 1, in which it is provided with inclined guides mounted on the frame, and the transverse parts bin is made in the form of a platform installed with the possibility of reciprocating movement on the inclined guides, Mehahadem feed cross parts you 759283 filled in the form fixed on the frame perpendicular to the direction of movement of the guides and pneumatic convector mounted on the guides with the possibility of reciprocating movement.