RU2753560C2 - Method for clinching connection of profiles and profile produced by this method - Google Patents

Abstract

FIELD: building.

SUBSTANCE: invention relates to the technology of bulging in connection of profiles. A method for clinching connection wherein the connection is formed by overlapping paired U-shaped profiles interconnected by the bases forming a symmetrical cross-section and contacting each other by bulges. Guides attached to the support table on a single axis together with a stationary bulging machine are used to hold and align the profiles with each other. The guides are equipped with pneumatic cylinders and at least one positioning mark is made on the matrix of the bulging machine. Prior to bulging and fastening the profiles in the guides, marking holes corresponding in shape and size to the positioning mark are made in the profiles; the profiles are aligned with each other with the marking holes and profile ends coinciding. After the profiles are positioned they are fixed in the guides by pneumatic cylinders, then the profiles are bulged simultaneously at several points using the bulging machine and the process described above is repeated.

EFFECT: increased load capacity of a clinching connection.

5 cl, 9 dwg

Description

The invention relates to the technology of bulging and can be used when connecting profiles.

The industry entered a phase dominated by labor intensive welding, blind rivets, self tapping screws, screws and structural rivets. Workers were looking for easier ways to fulfill their duties. To date, hopping is one of the most common and effective procedures in the construction and industrial sphere [http://www.profstaldom.ru/lstk-articles/puklevka-detaley-lstk/].

Embossing is a designation of an embossing procedure, pressing for attaching small-sized parts (specific metal perforation). These elements are made in the form of knots (that is, in a round shape) and contain four holes designed to be fixed in the future. The process makes it easier to assemble the frames due to the fact that as a result the connection points become marked. In addition, this mechanism minimizes the cost of the lathing. The result of manipulating thin products is the creation of peculiar indentations on their surfaces, or, on the contrary, bulges. At subsequent stages, these recesses on the walls of the parts, which are connected, play the role of mating parts of a single lock connection. The classic version is a recess on the U-shaped profile and another one on the corresponding C-shaped thermoprofile. During fastening, the concavities enter each other and form the necessary lock to create an integral frame. To keep the connection strong, you just need to screw the bolt into this place with a screwdriver or other suitable tool.

Units that are equipped with connecting hubs can withstand more load and are distinguished by significant power. So, according to the results of many tests and experiments, as well as simple mathematical calculations, the following conclusions were made: standard self-tapping screws can carry a load of up to three tons, while the nodes connected by bullets can withstand from four to five thousand kilograms.

Frames that are equipped with these connections have a distinctive ability to be quickly assembled. It is much more comfortable and faster to combine parts into nodal connections along the grooves. This is considered a winning option. Details easily determine their unmistakable relationship.

Also, important is the issue of hygiene and safety of the work carried out. In this regard, the bulge increases the rigidity of the assembled unit, minimizes the effort, which acts on the cut of the self-tapping screw. Puklevka also has a wide range of applications: floor systems, trusses (including for windy areas), beams, lintels, formwork beams for concrete floors, wall fixing slabs.

Thus, the role of bulging provides: additional resistance to different loads; saving time and costs; ease of use and installation of an integral frame; the ability to create smooth surfaces.

Embossing improves the quality of the connection in terms of strength and durability, and is much cheaper than other types of fasteners. And yet the advantages of bulging are the absence of all kinds of damage on the surfaces, resistance to corrosion and the formation of rust of the joints.

The connection of sheet metal with a bullet (see: [http://niobium.ru/poleznaya-informacziya/soedinenie-listovogo-metalla-puklevkoj.html], publ. 25.01.2019.) Is possible using special equipment operating on the principle of mechanical connection cold formed metal sheets. The clinch connection does not involve the use of fasteners. The bulge has replaced the outdated fastening with rivets and welding. Metal elements are connected to each other without damage, providing the required strength and reliability. The worker can use stationary or hand tools, depending on the task at hand.

Round and rectangular connections are made thanks to the bagger. In the first case, increased tightness is achieved, in the second - reliability. The tool provides a predetermined pressure, leading to deformations that allow several sheets to be joined together. The main advantages of the bullet include: increased productivity and speed of work, no expenses for connecting elements, improved strength of the connection, excluding the release of harmful substances, elementary work with the tool, protection of connections from corrosion, no damage to elements, preservation of the original properties of materials.

The closest analogue is a metal column (patent RU133161U, publ .: 10.10.2013), in which the body is made of paired U-shaped profiles, detachably connected by bases with each other to form a symmetrical cross-section and in contact with each other with bulges.

The technical problem of the prototype is the need to use additional fastening elements, in addition to the bulging, since it is quite difficult to manually perform the bulging with its symmetrical arrangement relative to the profile for a long profile. In addition, the conventional manual puffing process does not allow symmetrical puckering of long profiles due to the difficulty of positioning.

The objective of the invention is to eliminate these technical problems and to increase the load capacity of the clinch connection of the profiles.

The technical result is to increase the load capacity of the clinch connection of the profiles, the absence of the need for additional fasteners, the possibility of bulging long profiles.

The specified technical result is achieved due to the fact that the claimed method of clinching profiles, in which the connection is formed by the imposition of paired U-shaped profiles connected by bases with each other with the formation of a symmetrical cross-section and in contact with each other by bulges, characterized in that to hold and aligning the profiles with each other using guides, which are attached to the support table on a single axis together with a stationary buckling machine having the function of joining metal by cold welding, the guides are equipped with pneumatic cylinders, and at least one positioning mark is made on the matrix of the buckling machine; before bulging and fixing the profiles in the guides, the same type of marking holes are made in the profiles at a predetermined interval, which correspond to the shape and size of the positioning mark on the matrix; the profiles are aligned with each other in such a way that the marking holes and the ends of the profile coincide; after accurate positioning of the profiles, they are fixed with the help of pneumatic cylinders in the guides, then with the help of a bulking machine, the bulging of the profiles is performed at several points simultaneously, and the above-described process is repeated, each time shifting the profiles by a predetermined step relative to the positioning mark, until the completion of bulking for all points.

If there is a need for bulging in a checkerboard pattern, the guides are attached to the support table with the possibility of displacing a single axis relative to the center of the positioning mark of the matrix of the bulking machine, bulging is carried out at a given interval, after which the profiles are removed from the guides, rotated 180 degrees and fixed again in the guides, repeating bulging at a given interval.

Preferably, the displacement of the guides is carried out by fixing all the guides to a single support bar fixed to the table from its lower or upper part, and the support bar itself is displaced using a rack and pinion mechanism.

The above-described method makes it possible to carry out bulging of long profiles and to carry out symmetrical bulging of profiles. The latter provides an increase in the load capacity of the clinch connection of the profiles and the absence of the need for additional fasteners, since the symmetrical arrangement of the bulge gives a uniform application of the load on the formed profile, which reduces the likelihood of rupture of the bulge joints.

The profile obtained by the claimed method is formed on the basis of a clinch-connection of two profiles, made by overlaying paired U-shaped profiles connected by bases with each other to form a symmetrical cross-section and in contact with each other with bulges, where each of the connected profiles contains the same type of marking holes at a given interval , moreover, the profiles are aligned with each other in such a way that their marking holes and the ends of the profiles coincide, and the bulge is located between the marking holes on the same axis, which is located coaxially with the longitudinal axis of the profiles.

It is acceptable that the profile has a staggered or parallel bulge.

Brief Description of Drawings

1 shows a diagram of an installation for connecting profiles.

Figure 2 shows a diagram of an installation for connecting profiles with movable guides.

Figure 3 shows a diagram of the positioning of the profiles before bulging.

Figure 4 shows the principle of fixing the guide to the table and the mechanism of its displacement.

Figure 5 shows the mechanism for shifting the guide (view from the bottom of the table).

6 shows a close-up positioning mark.

Figure 7 shows the location of markings and bulges on the profile (top view of a separate section of the profile).

Fig. 8 shows an example of a staggered pattern (top view of a separate section of the profile).

In Fig.9 shows an example of the implementation of the bulge in parallel (top view of a separate section of the profile).

In the drawings: 1 - bed, 2 - electrical cabinet, 3 - button to turn off the pneumatic cylinder, 4 - pedal, 5 - bulking machine, 6 - pneumatic hydraulic cylinder, 7 - punch, 8 - rack, 9 - guide device for positioning, 10 - profile ( 10.1 - upper part of the profile, 10.2 - lower part of the profile), 11 - support bar for displacement of the guides, 12 - table, 13 - displacement zone of the guides, 14 - matrix, 15 - positioning mark, 16 - pneumatic cylinder, 17 - guide support, 18 - a gear wheel, 19 - a fastening bolt with a nut, 20 - a rotation shaft of a rack and pinion gear wheel, 21 - a rack and pinion gear rack, 22 - a marking hole, 23 - a bulge hole.

Implementation of the invention

The method of clinching the profiles is realized due to the fact that the connection is formed by the superposition of paired U-shaped profiles connected by bases to each other with the formation of a symmetrical cross-section and in contact with each other by beads (see Fig. 1).

The novelty is that guides 9 are used to hold and align the profiles with each other, which are attached to the support table 12 (Fig. 2) on a single axis together with the stationary buckling machine 5. The buckling machine 5 has the function of joining metal by cold welding. The guides 9 are equipped with pneumatic cylinders 16. On the matrix 14 of the buckling machine 5, at least one positioning mark 15 is made (see Fig. 3, Fig. 6).

Before bulging and fixing the profiles 10.1, 10.2 in the guides 9, in the profiles 10.1, 10.2 themselves, the same type of marking holes are made at a given interval, which correspond to the shape and size of the positioning mark 15 on the matrix 14.

Profiles 10.1, 10.2 are aligned with each other so that the marking holes and profile ends match.

After precise positioning of the profiles 10.1, 10.2, they are fixed using pneumatic cylinders 16 in the guides 9, then with the buckling machine 5, the buckling of the profiles 10.1, 10.2 is carried out at several points simultaneously, and the above-described process is repeated, each time shifting the profiles by a given step relative to the positioning mark 15, up to completion of bulging for all points.

If there is a need for bulging in a staggered manner, the guides 9 are attached to the support table 12 with the possibility of displacing the single axis relative to the center of the positioning mark 15 of the matrix 14 of the bulking machine 5, bulging is carried out at a predetermined interval, after which the partially bulged profile 10 is removed from the guides, rotated 180 degrees and fix it again in the guides, repeating the bulging at a given interval.

The displacement of the guides 9 is carried out by fixing all the guides 9 to a single support bar 11, fixed to the table 12 from its lower or upper part, and the support bar 11 itself is displaced using a rack and pinion mechanism.

The support strip 11 for displacing the guides within the displacement zone 13 can be attached to the table 12 as shown in FIG. 4. The support 17 of the guide, which holds the pneumatic cylinder 16, can be fixed to the table 12 with a fastening bolt and nut 19.

This displacement mechanism can be realized, for example, by installing the toothed rack 21 from the end of the support bar and applying to the toothed rack the gear 18, the rotation of which is set by the motor or manually through the rotation shaft 20 (see Fig. 5).

In this way, it is possible to simultaneously shift all guides 9 within the displacement zone 13 by a predetermined interval. This possibility of displacing the axis of the guides relative to the center of the positioning mark of the matrix of the punching machine allows puffing in a checkerboard pattern, which makes it possible to poke profiles of different thicknesses with one matrix, as well as enhance the fixation profiles with additional bulging. The latter provides an increase in the load capacity of the produced profile.

The profile 10 formed by the above-described method is formed on the basis of the clinch-connection of two profiles (see Fig. 7), made by superposition of paired U-shaped profiles 10.1, 10.2, connected by bases with each other to form a symmetrical cross-section and in contact with each other by beads 22.

What is new is that each of the connected profiles contains the same type of marking holes 23 at a predetermined interval, and the profiles are aligned with each other in such a way that their marking holes 23 and the ends of the profiles coincide, and the bulge 22 is located between the marking holes on the same axis, which is located coaxially with the longitudinal axis of the profiles.

The profile can have a bump in a checkerboard pattern (see Fig. 8) or parallel (see Fig. 9).

The bulking process is carried out in this way.

The guides 9 are equipped with pneumatic cylinders 16. The prepared profile 10.2 of the required cross-section and length is placed with “horns” down into the guides 9. The profile 10.2 is laid in such a way that the first mark (in the example in the drawings - an oval hole in profile 10.2) visually coincides with the positioning one (also on drawings - oval) mark 15 on the matrix 14.

The mark 15, like the holes in the profiles 10.1, 10.2, can have a different shape, not necessarily oval.

On top of the first profile 10.2, the second profile 10.1 is laid with its back, so that the oval holes and the ends of the profile coincide.

After precise positioning, using the off button 3, the pneumatic cylinders 16 on the guides 9 are turned on, which allow the profiles to be clamped in the guides 9 and to avoid their displacement relative to each other.

Then the hands are removed from the bulging zone (between the matrix 14 and the punch 7).

Using pedal 4, they turn on the stationary punching machine 5, designed for joining metal by cold welding, for example, [https://svr-online.ru/masterclinch], which, using a pneumatic hydraulic cylinder 6, lowers the punch 7 and fixes (puffs) profiles 10.1, 10.2 at several points simultaneously, preferably at least four points.

At the first moment of time, before the punch touches the profile 10.1, pneumatics works, then the hydraulic cylinder 6 works. After that, the automation of the pneumatic cylinders 16 is triggered and the guides 9 move to the upper position, raising the profiles 10.1, 10.2.

After the first bulging, the profiles 10.1, 10.2 are shifted by one hole and the above-described process is repeated until the bulging is completed for all points.

Positioning block - matrix 14 with mark 15 can be replaced with a block of a different size with different sizes and shapes of marks 15.

The number of bulging points between two adjacent holes can be at least one, but it can also be two, three, four, etc.

The claimed method makes it possible to use a different arrangement of profiles when puckering, both along one line and in a checkerboard pattern, for example.

In addition, the formed profile can have a large length, which can be limited only by the dimensions of the production room.

The matching profiles 10.1, 10.2 can be different in size and metal thickness, as well as have different perforation sizes. The material of the profiles can also be of various types of metal: black, galvanized, stainless steel.

If there is a need for bulging in a checkerboard pattern, the guides are attached to the support table with the possibility of displacing a single axis relative to the center of the positioning mark of the matrix of the bulking machine, bulging is carried out at a given interval, after which the profiles are removed from the guides, rotated 180 degrees and fixed again in the guides, repeating bulging at a given interval.

The above-described puffing process is not limited to the possibilities reflected in the examples of the description and in the drawings.

The claimed solution also makes it possible to carry out bulking with the superposition of bullets on top of each other, which will form one large “spot” of bullets.

Also, bulging is possible at an angle of 15-30 degrees or at another angle. It is also possible to bullet one at a time - "snake", as well as staggered like a snake, but two bullets.

In addition, it is possible not only to mechanically feed the profile and positioning only with the help of holes, but it is possible to poke the profile in automatic mode, when the machine itself is oriented towards orientation by the mark.

Claims (5)

1. The method of clinching profiles, in which the connection is formed by the imposition of paired U-shaped profiles connected by bases with each other with the formation of a symmetrical cross-section and in contact with each other with bulges, characterized in that guides are used to hold and align the profiles with each other , which are attached to the support table on a single axis together with a stationary buckling machine, which has the function of joining metal by cold welding, and the guides are equipped with pneumatic cylinders, and at least one positioning mark is made on the matrix of the buckling machine; before bulging and fixing the profiles in the guides, the same type of marking holes are made in the profiles at a predetermined interval, which correspond in shape and size to the positioning mark on the matrix; the profiles are aligned with each other so that the marking holes and profile ends match; after accurate positioning of the profiles, they are fixed with the help of pneumatic cylinders in the guides, then with the help of a bulking machine, the bulging of the profiles is performed at several points simultaneously and the above process is repeated, each time shifting the profiles by a predetermined step relative to the positioning mark, until the completion of bulking for all points. 2. The method according to claim 1, characterized in that, if there is a need for bulging in a checkerboard pattern, the guides are attached to the support table with the possibility of displacing a single axis relative to the center of the positioning mark of the matrix of the bulking machine, bulging is carried out at a predetermined interval, after which the profiles are removed from the guides, unfold by 180 ° and fix them again in the guides, repeating bulging at a given interval. 3. The method according to claim 2, characterized in that the displacement of the guides is carried out by fixing all the guides to a single support bar fixed to the table from its lower or upper part, and the support bar itself is displaced using a rack and pinion mechanism. 4. A profile obtained by the method according to claim 1, formed on the basis of a clinch-connection of two profiles, made by overlaying paired U-shaped profiles connected by bases with each other to form a symmetrical cross-section and in contact with each other by bulges, characterized in that each of the connected profiles contains the same type of marking holes at a predetermined interval, and the profiles are aligned with each other in such a way that their marking holes and the ends of the profiles coincide, and the bulge is located between the marking holes on the same axis, which is located coaxially with the longitudinal axis of the profiles. 5. The profile according to claim 4 has a bulge in a checkerboard pattern or in parallel.

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