RU2387517C2 - Facility for package riveting - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: facility consists of manual hydro-press, of rod-catcher for installation into free hole in riveted package and of un-riveting device. The hydro-press consists of a case, of internal hydro-cylinder, of two dowels connected to a piston of the hydro-cylinder, of a journal with internal guiding surface for the said dowels and of an external hydro-cylinder. The dowels travel along axis of the hydro-press and in radial direction and fix the rod-catcher in the case of the hydro-press. The latter is made replaceable and smooth. The un-riveting device is also equipped with dowels having a guiding bell on an upper end.

EFFECT: simplified design with increased reliability, expanded process functionality and reduced time for re-setting.

5 dwg

Description

The invention relates to the field of riveting and assembling, in particular to the assembly of panels and thin shell structures.

A device for riveting packages containing a power cylinder with a rotation mechanism of the rod-catcher and support. The rotation mechanism is a sleeve with a helical groove on the side surface and a catcher rod having protrusions installed in the specified groove on the upper end and diametrically located milling cutters on the free end necessary to clamp it with support crackers [1].

The disadvantages of the known device are the rotation mechanism of the rod-catcher, complicating the process of replacing the rod-catcher in case of breakage, and diametrically located milling on the free end of the rod-catcher, which significantly weaken the structure of the rod.

The invention is aimed at simplifying the design of the device for riveting and reducing the time of replacement of the rod-catcher; expanding the range of diameters of riveted rivets; increase in reliability (separation of the functions of gripping the rod and riveting rivets); improved workability. This is achieved by the fact that a manual hydraulic press includes a housing, an internal hydraulic cylinder, two crackers connected to its piston with a guide bell at the upper end, a catch rod made with a replaceable and smooth, pin with an internal guide surface for crackers and an external hydraulic cylinder.

Figure 1 shows a device for riveting packages in a section, figure 2 shows a manual hydraulic press, figure 3 shows a thrust bearing, figure 4 shows a riveting device, figure 5 shows the position of the spools.

The device for riveting packages includes a manual hydraulic press and a riveting device.

The manual hydraulic press consists of the body of the internal hydraulic cylinder 1, the piston 2 and the cover 3. A boss is made on the body of the internal hydraulic cylinder 1, to which rigid pipelines 4, 5 are connected. The piston 2 is connected to the crackers 6, 7 through the clamp 8, which is screwed onto the piston 2. The clamp 8 is engaged with the crackers 6, 7 with the help of the radial grooves on the crackers 6,7 and the protrusion on the clamp 8, which simultaneously provide a rigid connection of the crackers 6, 7 and the clamp 8 with the joint longitudinal movement along the axis of the manual hydraulic press and free e moving suharikov 6, 7 relative to the clamp 8 with the compression (decompression of) rusks 6, 7. Suhariki 6, 7 are mated with internal conical guide surface 9 trunnion, is screwed onto the housing inner cylinder 1.

The housing of the external hydraulic cylinder 10, the piston 11, on which the housing of the internal hydraulic cylinder 1 is fixed, the cover 12, which serves as a guide for the internal hydraulic cylinder and the housing of the manual hydraulic press, are elements of the external hydraulic cylinder. A boss is also made on the body of the external hydraulic cylinder 10, to which rigid pipelines 13, 14 are welded. In the cover 12 there is a longitudinal groove necessary to ensure the assembly of the internal hydraulic cylinder and piston 11. On the outside, the hand press is closed by the cover 15.

The thrust bearing consists of a sleeve 16, to which the ribs 17 left and right 18 are welded, with a support 19, and an anchor bar 20, attached to the sleeve using two screws 41. The thrust bearing is put on the cover 12 and secured from the end by the cover 15.

Rigid pipelines 13, 14 are connected to spools 21, 22 using fittings 23.

At the ends of rigid pipelines 4, 5 there are also two fittings 23 necessary for connecting with flexible pipelines 24, 25, the second ends of which are connected to spools 21, 22. Moreover, the spool 21 connects the cavity above the piston 11 of the external hydraulic cylinder and the cavity under the piston 2 the internal hydraulic cylinder, and the spool 22 connects the cavity under the piston 11 of the external hydraulic cylinder and the cavity above the piston 2 of the internal hydraulic cylinder.

For the convenience of using the press, a handle 26 is provided that hides all rigid and flexible pipelines and spools 21, 22.

The manual press is powered by a multiplier through two hoses.

The riveting device is a thrust bearing, consisting of crimp 27 and ribs 28 welded to it, straps 29 and supports 30; the punch 31, and two crackers 32, 33, having the ability to move along the inner conical surface of the crimp; a catch rod 34 installed in a free hole of a riveted packet; a support bolt 35; a spring 36 necessary to compress the riveted packet 39 of the crimp riveting device 27; lids 37 with handle 38.

To ensure work with the press, an additional free hole in the bag is required (a catcher rod is installed in it).

In the initial position of the press, the piston 11 is in the lower position (the pin is lowered), and the piston 2 is in the upper position (crackers are unclenched). The rivet-catching rod is inserted into the second hole in the bag along the riveting (rivet 40 is inserted into the first hole). On the other side of the bag, the catch rod is introduced into the hand press.

The hand press and the riveting device are oriented so that the support support 30 and the support of the thrust bearing 19 are located along the riveting seam.

When the valve is opened on the multiplier, the working fluid enters the spool 21. It is in position I, in which the fluid is directed into the cavity above the piston 2, it lowers the crackers 6, 7 and compresses the catch rod 34. At the same time, the spool 22 is in position III in which the working fluid flows from the cavities under the piston 2 and above the piston 11.

After the catching rod is fixed with crackers 6, 7, excessive pressure is formed at which the spool 21 goes into position II, redirecting the working fluid into the cavity under the piston 11.

A working stroke occurs, during which the catcher rod extends the punch 31, which transfers force through the spring 36 to crimp the riveting device and compresses the bag 39, further movement of the crimp leads to riveting of the rivet.

The relative movement of the internal and external hydraulic cylinders and, accordingly, rigid pipelines 4, 5 and 13, 14 is perceived by flexible pipelines 24, 25.

After the closing head of the rivet is formed, an excess pressure will be created in the cavity under the piston 11, which changes the position III of the spool 22 to position I, the liquid starts to be pumped into the cavity above the piston 11. At the same time, the spool 21 moves to position III, thereby draining the liquid from the cavities above the piston 2 and under the piston 11. A reverse stroke occurs, until the crackers 6, 7 come into contact with the annular protrusion on the cover of the hand press 15. Overpressure will occur in the cavity above the piston 11, which leads to spool 22 to position 2 and the fluid starts to be supplied into the cavity under the piston 2, so the piston 2 is moving upwards, pulls crackers 6, 7, 9 of the stud, freeing the catcher rod 34.

The released support is transferred to the next free hole along the riveting and the cycle repeats.

Information sources

Riveting device. A.S. No. 1183274 dated 08/15/92, Bull. No. 30.

Claims (1)

A device for riveting packages containing a manual hydraulic press, a catch rod for installation in a free hole in the bag and a riveting device with crackers covering the catch rod, characterized in that the manual hydraulic press includes a housing, an internal hydraulic cylinder, two crackers connected to its piston, having the possibility displacement along the axis of the hydraulic press and in the radial direction and fixing in the hydraulic press body of the catch rod, which is removable and smooth, a pin with an internal guide surface for the mentioned two crackers and an external hydraulic cylinder, and the crackers of the riveting device are made with a guide bell at the upper end.

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