SU984580A1 - Apparatus for connecting sheet parts - Google Patents

Description

(54) DEVICE FOR CONNECTING SHEET

DETAILS

-one

The invention relates to mechanical engineering, in particular to the processing of metals by pressure, and can be used for stitching together steel sheets in the manufacture of sheet coatings.

A device is known for joining sheet metal parts, containing plates and located on them a stretching and plush, wicked mechanism, equipped with a die and a punch 1.

The prior art device connects the sheets by means of local drawing and flattening of the lumps of the sheet sections to be joined, therefore the joining of the sheets cannot be airtight.

The purpose of the invention is to seal the seam.

This is achieved by the fact that in the device for joining sheet parts containing the plates and located on them a stretching and flattening mechanism equipped with a die and a punch, the die is made. The assembly is not composed of three parts, one of which is fixed, the other is movable in the horizontal direction, and a third is mounted below the first two and installed between them with a possibility of movement in the vertical plane, while the punch and the die are made with a length equal to the length of the plate.

FIG. 1 shows the device, side view; in fig. 2 - view along the stitched

5 sheets (perpendicular to the seam line); in fig. 3 - seam groove (chuck) at the moment after the first cycle of the device, cross section; in fig. 4 - seam at the moment after sminani puklevka from the sides (after the second cycle of the device),

O cross section; in fig. 5 - seam in finished form after the third cycle of operation of the device, cross section; Fig. 6 is a pneumatic device matching circuit of the actuators.

Thin lines in the diagram show air signal tubes for giving commands from end valves with control valves for opening air for various channels with power flow.

The device consists of main actuators I, 20 side pneumatic actuators 2 and lower actuators 3. To avoid distortions of each of these types of actuators, there must be at least two operating synchronously. Each of the actuators has a piston 4 and a rod 5. To the top (main) rods

pneumatic actuators attached plate 6, located above the fixed plate 7. In the upper plate for its entire length is fixed to it a punch 8 with grooves 9 at the base and symmetrical slopes 10, which, together with other elements, despite its seemingly insignificance, ensure the implementation of plastering and seam.

In the lower fixed plate there is a matrix 11 with a movable bottom 12 and a movable wall for the entire length of the matrix, respectively, to the punch. The rolling bottom has symmetric slopes 13, the side walls 14 and 15 of the die are inclined at 45 °, and at the upper edge there are small tides corresponding to the notches 9. On the bottom plate are sheet parts 16. A bracket on which the main pneumatic drives are located The bottom plate is equipped with a folding jumper 17, which serves as a support and is necessary for mixing large-diameter shells, which are put on the bracket (the arm of the bracket is not shown).

FIG. 6 shows an end valve 16 with a hand pedal (marked with a circle), which, driven by the supply air, sends a command to open control valve 20 through the signal tube 19. Air is passed through control valve 20 through the drain tube to the upper chamber of the main valve actuator 1. Similar 18 end valve 21 is installed with the interaction with the finger 22 on the top plate. Finger 22 mechanically interacts with the pedals or levers 23 and 24, which include end valves 21 and 25.

It should be noted that the pedal 23, which lifts the top plate with the punch through the end valve 25, the signal tube and the control valve 20 by passing air into the lower chamber of the main drives, has a backup pedal 23 located next to the valve pedal 18. These pedals are device control in the process of joining sheet metal parts. The end valve 25 is connected by a signal tube with an adjusting valve 26. The latter, by appropriate signals (commands), by-pass air from the main line simultaneously to two types of actuators (side and bottom). At the same time, when air is passed into the left (according to the figure) lateral chambers, it simultaneously passes (through the pipes / s of half the diameter) and into the upper chambers of the lower drives. When air is supplied to the right (side) air, it flows (through tubes of twice the diameter) simultaneously into the lower chambers of the lower actuators.

The device works as follows.

The sheet parts 16 are supplied to the punch with some overlap from the middle greater than the height and plus the half-thickness of the punch. Next, the worker presses the pedal with the valve 18. The punch is set in motion and pushes the puklevka.

At the end of this first stroke, finger 22 will turn on valve 23 through lever 23, which will send two signals: one to control valve 20 to bypass air into the lower chamber of the main drive (s) and the other to control valve 26 to supply air to the left side camera drive and the top - bottom drive. The main drive has power tubes of a larger diameter, so the punch has time to get out of the puklevka when the movable wall 14 of the matrix begins to compress the puklevka from the sides, together with the wall 15, which is stationary. This is the second cycle of operation, at the end of which the finger 22 presses the lever 22 and activates the operation of the end valve 21. The valve 21 will command the control valve 26, which will bypass the air into the right side drive and the lower chamber. The wall 14 of the matrix will go to the left (Fig. 5), and the movable bottom 12 up. Compressed - puklevka (Fig. 4) moves up to the level of the tides of the matrix. Next, the device will stop. The worker again presses the pedal against the valve 18, and the piston 4 goes down again, the punch 8 meets with the lateral pulling and compresses the seam. If necessary, crimping is repeated several times in short jerks with the help of the removed pedal 23 at the same end valve 18. By pressing the pedal 23 and then the pedal 18, the percussion punch is created; comes to the lever 23.

The effectiveness of the invention in comparison with the prototype is reduced to the tightness of the seam.

Claims (1)

1. USSR author's certificate No. 202858, cl. B 21 D 39/03, 17.01.66 (prototype). FIG. one 6 ten / 7 / g . 2 WU // XX / I Fig.Z RyL ix tx PUZ. & A c