RU2467820C2 - Method of jointing sheet part, primarily, flanges and branch pipes, to air ducts, and device to this end - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming, particularly, to jointing of the parts. Opposite joints are made on sheet stack both sides by punching with the help of solid and split female dies arranged in equal-cross-section slots. Note here that said stack is punched to make bulges and recesses on section confined by female die slot and on that not confined by said slot, to be removed from the slot without punching. Proposed device comprises split and solid female dies with cutting edges, float set of male dies with extreme parts making different-length replaceable cutting plates to form cutting edges. Central part of said set is composed of the plate with ledge extending beyond the cones of extreme part plates. Note here that female dies allows replacing blunt cutting edges by sharp ones.

EFFECT: stronger joint, expanded performances.

11 cl, 12 dwg

Description

The invention relates to the processing of metals by pressure when one of the sheets is covered by two others or they are superimposed on each other, having an angular or L-shaped shape. It can be used, in particular, to methods and devices for joining several sheets, in mechanical engineering, the construction industry, in the energy sector, in the manufacture and installation of ventilation, aspiration, roof coatings, commercial equipment, as well as in the construction of a cover layer of insulating coatings and repair of agricultural technicians.

A known method and device for its implementation (see Av. St. No. 1286099, B21D 39/03, 1989). The sections of the working parts of the anvil and punch are solid, therefore, to implement the method, great efforts must be made, which requires the construction of hydroelectric power stations, the use of electric drives and excludes the creation of mobile tools with a manual drive.

A known method of connecting sheet metal parts by a device of the company TRUMPF, exhibited at the metalworking exhibition in 2002 in Moscow (see the catalog of TRUMPF). The known method and device for its implementation are successfully used everywhere, but require great effort, which excludes their use with a manual drive. In addition, using a known tool, it is impossible to mount branch pipes to the ventilation ducts and repeatedly change the blunt sections of the matrix to sharp sections.

A known method for connecting sheet metal parts and a device for its implementation (see RF Patent No. 2281827, B21D 39/03, 2004).

The implementation of the known method requires the operation of applying a light strike with a striker, performed on the slider of the device, according to the convexity of the connection with the aim of its output from the groove of the matrix and the subsequent extraction of the package of punches from it, which complicates the design of the slider. The pointed part of the disk segment of the middle part of the floating pack of punches does not contribute to the formation of the required anisotropy of the metal extruded into the cavity in terms of increasing the contact strength in the bottom of the cavity and between the sheets in the lateral surfaces of the bulge. The made conical edges of the cutting edges at an angle of 5 to 45 degrees do not provide when punching the input sheets and filling a sufficient amount of metal into the gaps to increase the bore in different directions relative to the middle part of the extreme parts of the floating punches package. As a result, the creation of interlocking friction forces necessary for the stable output of the convexity of the pack of punches made by the package is not ensured; connections from the groove of the matrix without the use of a strike with a brisk fixed on a slider.

The implementation of the known method involves the adjustment of the plates of the extreme parts in terms of preserving the cutting edges of the matrix from damage by the pressure regulator, however, it does not provide for the extension of the entire length of the cones of the plates of the extreme parts. This circumstance does not allow to dissolve the metal introduced under the edges of the cutting edges, and to cut into the sides of the hollow of the cutting edges of the steps of the plates of the extreme parts so as to form it in the form of a trapezoid, with the aim of placing punches in it after fastening the sheets, and pulling out the bulge from groove of the matrix by the reverse stroke of the punch package.

In a known manner and device, it is possible to fix the flange facing the inside of the nozzle to the duct of a duct with a diameter of at least 600 mm and a cross section of at least 600 × 600 mm. However, the design cross section will be underestimated by the amount of: flanging, which is facing the inside of the pipe. Often, in order to mount the pipe to the line, it is necessary to increase the diameter of the pipe itself by the amount of flanging. In a known method and device, it is impossible to fasten the flanging facing the outside of the pipe to the line sheet. In a known manner it is not possible to connect the punches directly or indirectly so that semicircular bulges from 2.0 mm to 3.0 mm in size are brought out onto the outside of the flange from the tires. The protruding inward convexity of the joints around the perimeter of the duct prevents the rotation of mechanisms, for example, ventilation fire damper flaps, which reduces the technological capabilities of the known method due to the impossibility of its application.

In a known manner, it is impossible to conduct bilateral opposed connections when a floating packet of punches must be introduced alternately, from the outside, then from the inside to connect the tire flange to the duct along the joint. This order of alternating joints is necessary to eliminate technologically unavoidable gaps up to 4.0 mm in size by compressing a sheet packet from two sides to increase the joint strength.

In the known method, the elements of the floating pack of punches are made in one plane. This circumstance does not allow to draw a line of depth of penetration of the package of punches beyond the outer edge of the third sheet beyond which the pressed metal is led out, that is, it is impossible to form a depression in the zone defined by the cutting edges of the die groove in order to obtain a denser metal in the depression.

Accordingly, in a known manner it is impossible to do without striking the bulge with an anvil to obtain the required density.

The disadvantages of this method include the impossibility of making connections from one installation of the device to a tire flange of size 20 × 20 × 8 mm and removing it from the flange without turning through an angle from 0 to 90 degrees. The method does not provide for fixing with offset from the plane relative to each other the cutting edges and cones of the plates of the extreme parts to prevent overcutting of the inclined flat springs of the flanges from the tires. In a known manner it is impossible to mount flanges from tires of size 15 × 15 × 8 mm, 35 × 35 × 10 mm. The cross-sectional size of the protruding part of the slider for attaching the punches package, centralizer and pressure regulator cannot be less than 5 mm or 6 mm due to the presence of threaded connections in it. For flanges of tires 15 × 15 × 8 mm, the section of the plane of the spring plate is too short, and for flanges of tires 35 × 35 × 10 mm, the transition from the plane of the spring plate to the U-shaped stiffener is too large, so the protruding part of the slider with a cross section of 5 mm up to 6 mm does not allow to arrange flat sections of tire flanges opposite the floating punch package. In addition, the protruding part of the slider and the pharynx do not allow to place a pipe flange with a main sheet for fastening the flanging sheet.

A known method of connecting sheet metal parts, mainly flanges to ducts, and a device for its implementation (see Patent No. 2395361, CL B21D 39/00, 2008). This method is the closest analogue. Using the method, flanges are successfully fastened from tires 20 × 20 × 8 mm and 30 × 30 × 10 mm with parallel and inclined arrangement of spring plates to air ducts from its outer and inner sides.

However, the protruding part of the slider, intended for fastening on it with a package of punches, a centralizer and a pressure regulator, does not allow under the conditions of ensuring the required strength to perform its cross section of less than 5-6 mm due to the presence of threaded connections in it. Accordingly, it does not allow to install flanges of tires with dimensions of 15 × 15 × 8 mm, 35 × 35 × 10 mm and arrange their flat sections in the throat opposite the floating packet of punches for connecting. The same is observed when installing a flange of tires 15 × 15 × 8 mm and 35 × 35 × 10 mm in the groove under the matrix. The jumper between the composite matrix and the groove for installing the U-shaped stiffener of the tire flange must be at least 5-6 mm in size, otherwise it will be pushed and damaged when the matrix stops are diluted during the connection. Therefore, it is impossible to arrange a place in the spring plate opposite the floating pack of punches for making connections from the inside of the duct. In one of the special cases, when using the known method for fastening parts up to 4.0 mm, the stops are secured from scam on the edge of the composite matrix, after which the matrix becomes one-piece, the truncated platform is advanced towards the matrix by a distance of not less than the thickness of the inclined sheet. In this particular case, the jumper between the matrix groove and the groove for installing the U-shaped stiffening ribs of the flanges from the tires 15 × 15 × 8 mm and 35 × 35 × 10 mm can be reduced to 3.0 mm, but the same cannot be done with the slider to reduce its cross-section to 3.0 mm, without changing its design for attaching a package of sheets. As a result, the execution of opposed connections from the outside, for example, the duct, is excluded. In addition, the use of the known method in other cases, for example, using an already composite, detachable matrix, will become impossible, since the dimensions of the cross sections of the groove of the matrix and the groove for installing the flanges from the tires are different, therefore, without special support, deflection and destruction of the jumper 3.0 mm can not be avoided. When fixing the end parts of the pack of punches displaced with respect to each other of the same length along the plates, for fixing the stack of sheets, when one of them is inclined, a gap is formed between the plane of the slider pusher and one of the plates of the end parts. To eliminate the displacement of the aforementioned plate, it is necessary to create a more powerful pressure regulator, which is impossible without increasing the overall dimensions of the device. To eliminate the gap, it is necessary to use inserts between the slider pusher and the sheet of steel sheet, since the pressure regulator does not always manage to keep it in the desired position.

The implementation of the known method allows you to do without applying a light blow with a hard place on the convexity of the connection, but only when fastening packs of sheets with a total thickness of 1.0 to 3.0 mm, in the General case of its use using a composite matrix. In other cases, with a package thickness of, for example, up to 4.5 mm, the device is removed from the bulge of the joints carefully by the handles with a slight angle rotation of 10 to 15 degrees, or they are knocked out with an anvil rib. When implementing the known method in one particular case of its use, the truncated area of the disk segment is advanced to the outside, beyond the cutting edges of the plates of the extreme parts of the punch package. But to extend the truncated area at a distance of 1.5 mm to 2.5 mm is not possible. In this case, there is a simultaneous excessive extension of the cone of the middle part, made at an angle of 80 degrees or less, respectively, it is impossible to form thickened bridges in the cavity and bulge, which leads to rupture of the connection. As a result, it is impossible to increase the penetration depth of the punches package for forcing and compacting the metal of the joined sheet package when forming a depression and bulge in the area bounded by the cutting edges of the die groove. Accordingly, to increase the contact strength and density in the bottom of the cavity and between sheets in the side surfaces of the metal, it is impossible to do without the operation of striking a bulge. The known method does not provide the creation of the necessary interlocking friction forces for reliable counter fastening with the spread of plates of the extreme parts with the walls of the section of the cavity, which is located beyond the limit of the groove of the matrix at the boundary of its cutting edges. That is, the method does not provide a kind of place for the anchor in the part of the cavity, not limited by the cutting edges of the matrix. It does not allow it to be formed in the form of, for example, a trapezoid, at the base of which the plates of the extreme parts of the punches pack would be placed with the scoop, with which the cavity and bulge could be pulled out of the groove of the matrix during the reverse stroke of the punches pack in the direction of the eccentric.

In the known method, the cone of the plates of the extreme parts and the cone of the middle part of the punch package do not extend the entire length beyond the clamp adjuster, which by its plane overlaps them, thereby limiting their spread, leaving only room for cutting into the connected packet of sheets. For this reason, the plates of the extreme parts cannot be divorced and cut into the sides of the cavity so as to form it, for example, in the form of a trapezoid. In a known manner, convexities are successfully heard by striking with the edge of the anvil in a prepared place for impact when fastening packs of sheets with a total thickness of 1.0 mm to 3.0 mm. However, the fastening in a known manner of a packet of sheets with a total thickness of 3.5 mm to 4.5 mm using a prototype device revealed that there is not enough energy for one blow created by a sharp spread of levers in different directions to distribute with one edge of the anvil to the place of impact a bulge with a bottom filled with metal from once. It is necessary to strike a bulge several times or increase the length of the device handles. The implementation of the known method provides for all kinds of options, the line for adjusting the depth of insertion of the plates of the extreme parts with steps and cutting edges is combined with the line of the outer edge of the third or fourth sheet from the connected sheet package. In this case, the cutting edges on the steps do not form a density on both sides of the bulge immediately upon crossing the boundary of the outer edge of the third or fourth sheet. That is, the formation of a depression in the area bounded by the cutting edges of the groove of the matrix, it is impossible to produce in a known manner and this type of floating pack of punches. Therefore, in a known manner, it is impossible to further increase the strength and density of the pressed metal in a depression located in the area bounded by the cutting edges of the matrix groove. For this reason, in a known manner it is impossible to do without striking with the rib of the anvil on the convexity of the connection.

The disadvantages of the method include the fact that the tolerance for sharpening a floating package of punches in length is determined by the stroke of the eccentric, which is in the range from 0.75 to 1.2 mm and cannot be increased without increasing the overall dimensions of the device. After that, the package of punches becomes short, does not provide a depth of cut, and it often has to be changed without further use to another, new, elongated one. In addition, in a known manner it is impossible to fix the flanging of the branch of a round or rectangular cross-section of the pipe facing the outside to the highway. For this, the device should be installed on the nozzle and position the flanging sheet with the line sheet opposite the punch package, and the handles should be placed along the body, which cannot be done in a known manner and device. In addition, the total thickness of the flanging sheet of the nozzle and the flat sheet of the duct of the duct according to the standards, for example, for diameters from 100 mm to 500 mm, is only from 1.2 mm to 1.4 mm, which requires reliable pairing of them with each other by clamps even before connections; otherwise, cuts and leaks of the connections are observed.

The disadvantages of this method include the presence of cases of damage to the plane for installing the gasket on the tire flange, that is, the mirror of the flange as a result of the operation of forcing into the holes of the mounting corners of the metal on one side of the U-shaped stiffener even when making the flange from the tire. This is due to the lack of a section in the form of a flat stop in the groove of the matrix from the side of the mirror plane of the flange. The disadvantages should also include the fact that the matrix, covering two cheeks, does not allow, due to the alternate installation of the liner between it and the cheek, to move more than two times the blunt edges of the groove into sharp ones that previously did not participate in the fastening of the sheets.

The task of implementing the claimed method is to eliminate the above disadvantages. Eliminate the operation of fast knocking out of the groove of the matrix cavity and the convexity of the connection. Eliminate the operation of striking a bulge when connecting sheet packets of thickness from 2.0 mm to 4.5 mm with replacing it with the operation of additional pressing of metal in the bottom and sides of the cavity in the area inside the groove bounded by the cutting edges of the matrix. Provide the ability to install and fasten a flange of tires of all basic sizes 15 × 15 × 8 mm, 20 × 20 × 8 mm, 30 × 30 × 10 mm, 35 × 35 × 10 mm, opposite, on the outside and inside of the duct, located in parallel or inclined to a spring plate, with a total thickness of sheet packets from 2.0 mm to 4.5 mm, a straight stroke elongated or shortened as a result of sharpening by a floating pack of punches.

Another task is to ensure the fastening of flanging sheets made on the outside of the round and rectangular branch pipes with adjoining from the outer and inner sides to the sheet of the plane of the highway with a diameter of 100 mm to 1000 mm and rectangular sections from 100 mm × 100 mm to 1000 mm × 1000 mm with a thickness of a package of sheets from 1.0 mm to 1.4 mm using a liner and using a composite matrix with special equipment and the manufacture of a floating package of punches. Namely, when steps with cones that have not undergone sharpening, two plates of the extreme parts and a truncated platform that has been subjected to repeated sharpening of one plate of the middle part of the floating punch package when secured in the punch holder, will be in the same plane, and the cutting edges will also be on the same level. but in a different plane. And also to ensure the safety of the mirror plane of the flange of the tires of the main types listed above when connecting the mounting corners with the U-shaped stiffening ribs of the tires. Ensure that at least more than two times the blunt sections of the integral matrix and the blunt cutting edges of the composite matrix are reinstalled on sharp sections that have not previously participated in fastening sheet packages. And also give the opportunity to constantly, reuse shortened to 3.0 mm as a result of sharpening floating packages of punches after overhaul.

The tasks are solved by using a device for connecting in a package with a total thickness from 2.0 mm to 4.5 mm three or four sheet metal parts of an angular U- or G-shape with a U-shaped stiffener and a dead-end spring plate, covering tightly or with a gap, a flat sheet located parallel or inclined to a spring plate containing a monolithic body, a fork, handles, an earring with nuts, a detachable matrix with cutting edges and an integral matrix having two longitudinal grooves with cutting edges and threads holes in the bottoms of the said grooves, a slider installed in the T-guides of the lower part of the monolithic body with a punch holder having a groove formed on the bottom, in which a floating package of punches is fixed, and a through cross-section with a longitudinal groove is made on one side of the monolithic housing earrings with nuts for installing the handles, and on the other hand - two equal in cross-section and separated by a jumper grooves for installing the mentioned dies in each of which, the extreme parts of the melt The package of punches is made in the form of reusable inserts forming cutting edges, one of which is 0.4-0.45 mm shorter than the other, having steps and cones protruding behind them, and its middle part is made in the form of a plate with a protrusion extending beyond the cones of the aforementioned plates of the extreme parts. Moreover, these matrices are made with the possibility of replacing blunt cutting edges with sharp ones.

In one particular case of execution, when the flat sheet is inclined to the spring plate, the bottom of the punch holder is made oblique, and the plates of the extreme parts of the floating punch package are located in a plane parallel to the plane of the inclined sheet and are offset from each other by 0.85-0.9 mm.

In other special cases: the device contains an insert in the form of a screw screwed into the groove between the cutting edges of the integral matrix, a jig containing a plate fixed in a monolithic body with the possibility of its alignment with screws along the height of the through cutout of the body, and a stop with a groove;

- a transverse groove and two chamfers are made in the case behind the through transverse cutout, and one nut is provided on the fork and earring to fix the handles in them in a horizontal position;

- the detachable matrix is made in the form of two plates of the extreme parts with four cutting edges, and the cutting edges of the plates of the extreme parts of the punch package are set outside the steps and cones by 0.2 mm and are located in the same plane;

- said jumper is made with a thickness of not more than 3.0 mm.

The method of joining in a bag with a total thickness from 2.0 mm to 4.5 mm three or four sheet metal parts of an angular U- or G-shape with a U-shaped stiffener and a dead-end spring plate, covering a flat sheet tightly or with a gap, located parallel or inclined to the spring plate, carry out the aforementioned device. In this case, the connected sheet parts are placed in the through cross-section of the monolithic body of the device or in the transverse groove under the jumper, an integral or detachable matrix is inserted onto the floating punch package and moved along the longitudinal axis of the body along the transverse groove, then the said sheet parts are connected to the punch by cutting, punching, stretching with the formation of a hollow with a bulge, after which the sheet metal parts connected in a package are removed from the slot of a detachable or one-piece matrix, then dilution m handle to lock the floating punch is withdrawn from the package made compounds.

In special cases, the implementation of the method:

- the joined sheets are placed opposite the package of punches in a transverse groove under the jumper and pressed to it;

- when the flat sheet is located obliquely to the spring plate, the elongated plate of the extreme parts of the floating punches package is pressed against the oblique bottom and installed in the groove of the puncheon over the middle part of the floating punches package, and the shortened one is pressed against the oblique bottom and installed in the groove of the punches below the middle part, providing an offset by 0.85 - 0.9 mm in the plane of the inclined sheet;

- when connecting a sheet of sheet metal parts of an angular U- or G-shape with a U-shaped stiffener in the form of a flange of tires and a mounting bracket with an opening in the threaded hole of the groove of the integral matrix, an insert in the form of a screw is placed at the level of the cutting edges to limit the bursting of П -shaped stiffeners in the hole of the mounting bracket, while the alignment between the package of punches and the hole of the mounting bracket is provided with a conductor, in the groove of which the mounting bracket is located, the hole of the mounting bracket is located opposite to the package of punches, when the handles are brought together, the metal of the sheet metal parts is pressed into the hole of the mounting bracket by a distance equal to the thickness of one flange of tires facing the package of punches before pairing with the other flange of the tires, the handles are brought fully against one another and one of the two mentioned sheet parts are pressed into the hole of the mounting bracket until they are mated to another sheet part, the tire flange is rotated 90 degrees and the operation is repeated around its perimeter;

- when connecting three sheet metal parts into a bag in the form of a nozzle with a flat section, an air duct and a flat liner, the flat section of the nozzle is located opposite the floating punches pack, and the detachable matrix with cutting edges is placed on the inside of the nozzle, while the handles are parallel to the horizontal axis of the device body.

Figure 1 shows a view of the device from the side.

Figure 2 is a top view of the device.

Figure 3 is a bottom view of the device.

Figure 4 is a view of the joined sheets in a package with fixed plates of the extreme parts in the side walls of the trapezoid cavity and the protrusion of the middle part, fixed in the bottom, ready for withdrawal from the groove of the matrix.

Figure 5 is a view of the finished connection with two narrow jumpers in the area of the cutting edges of the matrix.

Figure 6 is a view of the punch holder with an oblique bottom and a punch package fixed therein.

In Fig.7 is a section of an integral matrix with threaded and cross-shaped holes with a step equal to twice the length of the cutting edges of the plates of the extreme parts.

On Fig is a cross section of an integral matrix.

Figure 9 shows the time of the device on the nozzle with a flanging sheet made on the outside with a line sheet and a liner located on the flanging sheet.

Figure 10 is a view of the wound device on the pipe.

11. - view of an integral matrix with a liner in the form of a screw in it with cross-shaped through holes at the time of connecting the mounting bracket with the tire.

On Fig is a side view of the completed connection of the mounting bracket with the sheet of the tire.

A device for implementing the method comprises a monolithic metal case 1 with a through cutout and a longitudinal groove 2 made therein (see Figs. 1, 9).

In the groove 2 there is an earring 3 with nuts 4, 5 fixed on it for screwing the handle 6 into it, in the hole 7 there is an axis 8, which is mounted in the housing 1 by the disk 9 and the washer 10 (see Figs. 1, 2). On the other hand, the earring 3 is connected by a finger 11 to the plug 12. When using the device in a particular case, for example, when attaching a flat section of the L-shaped form with a total thickness of 2.0 mm to 4.5 mm, consisting of a flanging sheet of the pipe, An additional nut 4 is made on the sheet of the flat section of the duct and the liner sheet on the earring 3. The nut 14 is made on the plug 12 (see Fig. 1.). A nut 13 is fixed on the fork 12 for fixing the handle 15 in it, the fork 16 is connected to the slider 18 with a finger 16 in the hole 18. A T-shaped guide 19 is made in the lower part of the housing 1, in which the slider spikes 20, 21, 22 are longitudinally moved 18 (see Figs. 1, 3, 4). To eliminate the movement of the slider 18 in the vertical direction during travel along the T-shaped guide 19 in the housing 1, two guides 23, 24 are made in which the spikes 25, 26 of the slider 18 are tightly mounted. In order to tightly insert the spikes into the guides 23, 24, the extreme sections 27, 28 of the spikes 25, 26 are adjusted, for example, by grinding to form flat sections 29, 30 (see Figs. 1, 2, 7). On the slider 18, a punch holder 31 is made with a cutout, a groove 32 having a flat bottom is cut out on the same axis as the spikes 25, 26. In the groove 32 perform oblique bottom 33, offset from the flat bottom by 0.45 mm, it is used when using the device in a particular case. Steps 36, 37 are made on the plates of the extreme parts 34, 35 in their cross section of the punches package. Cones 38, 39 are arranged behind the steps, located at an angle of 50 to 60 degrees with respect to the steps, faces 49, 50 located at an angle of 50 up to 60 degrees (see Fig. 4, 5) to the cutting edges 40, 41 protruding beyond the steps, as well as one plate of the middle part 42 of the package of punches. On the middle part 42 of the punch package, a protrusion 43 is made, extending beyond its cone, made at an angle of 80 degrees, and extending beyond the cutting edges of the plates of the extreme parts. The plate of the middle part 42 can be made in the particular case of using the device and can have the properties of a flat spring with slight concavity and convexity on its planes. A slight concavity and convexity is given to it by bending in the plane of up to 0.15 mm due to its deformation, for example, during heat treatment. The dimensions of the cross section of the protrusion 43 and the truncated platform 44 made on it, the two sides of the plane of which are partially parallel and equipped with chamfers around the perimeter, are equal to the size of the length of the cutting edges of the plates of the extreme parts. When using the device in the particular case of its use on two sides of the truncated platform 44, two cutting edges 45, 46 are made at the ends of the cones, under which two concave chamfers 47, 48 are made (see Figs. 4, 6). On the other hand, on the plates of the extreme parts 34, 35 and the middle part 42, semicircles 51 are made, which are adjusted by sharpening to the stop without a gap into the plane of the oblique bottom 33 when the device is used in one of the special cases (see Fig. 6). By screwing the screws 52, 53 into the threaded holes 54, 55, passing them through the holes 56, 57 having grooves up to 6.0 mm long to allow the package of punches to move relative to the longitudinal axis, as well as by continuing to screw the screws 52, 53 into the following threaded holes 58 , 59 until it stops, the punch package is securely fixed in the punch holder 31 (see Fig. 2, 5). In this case, the cones of the plates of the extreme parts 34, 35 to increase their divorce during operation due to lateral springing from the middle part 42 in different directions will be led beyond the edges of the groove 32 of the punch holder 31.

To enable the installation and placement of angular-shaped parts, including U-shaped stiffeners with a dead end spring plate of flanges from tires 15 × 15 × 8 mm and 35 × 35 × 10 mm, a cutout 60 is made in the punch holder 31, two similar cutouts forming a through a cutout in the throat 61. To use the device in one of the special cases in the housing 1, a transverse groove 62 is made with chamfers 63 and 64 to be able to insert them and place in the groove 62 of sheet 66, pipe 65. And also for the possibility of placing flange sheet 66 opposite floating pack of punches 74 A fixing it with a flat sheet 67 of the duct and the liner sheet with a total thickness of 2 mm to 4.5 mm in one particular case of use of the device (see. Figures 1, 2, 9, 10). When using the device in the general case of its use, in the case of a slight deviation from parallel to each other from 1 to 5 degrees of sheets connected to the plate package of the extreme parts 34, 35 of the package of punches 74 are equal in length. Therefore, the bottom in the groove 32 of the punch holder 31 is flat, it is made in cross section perpendicular to the edges of the groove 32. When using the device in the particular case, when it is often necessary to re-arrange the package of punches for fastening the sheets in the bag, either with a parallel or inclined arrangement of sheets connected to the bag, in the groove 32 of the punch holder 31, an oblique bottom 33 is made. The plane of the oblique bottom 33 in the groove 32 is offset 0.45 mm from the vertical axis of the cross section of the groove 32. In the case of a parallel arrangement for the sheets are poured into the bag or their slight deviation is from 1 to 5 degrees using the plates of the extreme parts of various lengths, the device is readjusted in the following order. The plate of the extreme parts 34 is considered to be its first, shortened from 0.4 mm to 0.45 mm installed over the middle part 42, and the plate 35 is considered its second elongated from 0.4 mm to 0.45 mm, set under the middle part 42 (cm Fig. 6). As a result of the tight fit of their semicircles 51 to the plane shifted by 0.45 mm of the oblique bottom 33, their working parts of the cone 38, 39, steps 36, 37, cutting edges 40, 41, faces 49, 50 will be located in one plane (cm Fig. 1, 4, 6).

In the embodiment, when fastening sheet packs in a particular case with an inclined sheet position facing the punches pack, but with a slope away from the punches pack, including the dead end spring plate, the readjustment is carried out in the following order. A short plate 34, the first, reduced from 0.4 mm to 0.45 mm, is fixed in the groove 32 of the punch holder 31 under the middle part 42, and the second, extended from 0.4 mm to 0.45 mm, the plate 35 of the extreme parts is fixed above the middle part 42 floating packets of punches, that is, they are interchanged. As a result of reinstalling and fixing the plates of the end parts 34 and 35, their aforementioned working parts, the cutting edges are shifted by 0.85 to 0.9 mm along the horizontal axis. That is, to the difference in length from 0.4 mm to 0.45 mm of the plates of the extreme parts 34, 35, a difference of 0.45 mm, formed by the size of the deviation from the vertical axis of the plane of the oblique bottom 33, is added. Accordingly, the size of the offset from the working parts of one cutting edge 40 to the workers of the other cutting edge 41 will be (from 0.4 to 0.45 the difference between the inserts plus 0.45 the offset distance of the oblique bottom) from 0.85 mm to 0.9 mm. The fastening of three or four sheets, one of which, facing the package of punches, is not parallel, but with a slope with a thickness of 1.0 mm to 1.2 mm with such a changeover, it excludes its cutting and the creation of leaks between it and the sheet located behind it.

On the other side of the housing 1, a groove 68 is made for installing and fixing the integral matrix 69 therein, and in the particular case of using the split matrix device 70 (see Figs. 1, 2). Using a screw 71 passing through the hole 72 in the housing 1, in one of several through threaded holes 73 of the integral matrix 69, made in its bottoms, between the cutting edges of two grooves along the entire length of the integral matrix 69, with a step equal to twice the length of the cutting edges 40, 41 plates of the extreme parts of the package of punches 74, it is released for movement and secured from longitudinal movement (see Fig.1, 2, 7, 8). At least two or three screws 75, at least two or three in round, longitudinal or cross-shaped through holes 76 provide for the movement of the integral matrix 69 to 2.0 mm in the longitudinal and transverse directions, made at a distance from each other in increments equal to twice the length of the cutting edges 40, 41 of the inserts 34, 35 of the extreme parts of the punches pack 74. After adjusting the depth of insertion by inserting it onto the punches pack 74, the integral matrix 69 is fixed motionless in the grooves 77 made over the round, longitudinal and or with cruciform holes, screws 75 in the threaded holes of the housing 1. Additionally, the integral matrix 69 is fixed in the threaded holes of the bridge 78 with a thickness of not more than 3.0 mm, and then tightened with two screws 79, 80 in the threaded holes along the longitudinal axis of the housing 1. Screws 75 must not go beyond the outer edge of the jumper 78. Under the jumper 78 with three threaded holes, a groove 81 is made for installing one of the sides of the corner parts 82 (not shown in the drawings), including U-shaped stiffeners of the flanges from the tires 83 to ensure making opposite connections 84, that is, on the other side of the sheet package, between previously made connections, including flanges from tires of various sizes 15 × 15 × 8 mm, 20 × 20 × 8 mm, 30 × 30 × 10 mm and 35 × 35 × 10 mm (see Figure 1, 2, 9, 10). Having located the details of the above sizes in the groove 81 under the jumper 3.0 mm thick with a clip to it, they provide an arrangement of flat sections of sheets connected in a package, opposite the package of punches. If you increase the cross-sectional size of the jumper 78, then it will be impossible to arrange packs of sheets consisting of a duct sheet and flanges of tire sizes 15 × 15 × 8 mm, 35 × 35 × 10 mm, for fastening in a particular case, in places between previously made connections, opposite, on the back of the joint. In a straight run, the punch pack will extend above or below the flat portion of the sheet pack. In the general case of using the device, the handles are fixed in the nuts 5, 13 and placed in a plane perpendicular to the longitudinal axis of the housing 1.

In the particular case of a device for fastening sheets into a bag with a total thickness of 2.0 mm to 4.5 mm, configured for general use, it is possible to mount flat sections of the L-shaped parts of the pipe sheets with flat air duct sheets with or without a liner with a total thickness of 2.0 up to 4.5 mm. The liners are made of sheet steel with a size of 15 × 15 mm or a round shape with a diameter of up to 15 mm. Provided that two additional nuts 4, 14 of two chamfers 63, 64 on the housing 1 are made on the fork 12 and the earring 3, the transverse groove 62 is made behind the cutout of the housing, and the handles are reinstalled from one of the nuts 5, 13 to the other nuts 4, 14 in a position along the longitudinal it is possible to insert the aforementioned packs of sheets into the device’s axis and place them opposite the pack of punches 74. In this particular case, for the possibility of creating a round pipe, for example, with a diameter of 100 mm, the length of the integral matrix should not be larger than the size of the transverse reading of the case.

In the embodiment in the particular case when it is necessary to fix the liner sheet, the sheet 67 of the flat section of the duct and the flange sheet 66 of the nozzle 65 and the sheet of the liner 88 in the package with a total thickness of 1.2 mm to 1.4 mm, the device can be made in the following form . It is impossible to securely fix the aforementioned sheets into a bag using a pack of punches 74 and an integral matrix 69. To do this, a split matrix 70 is used in the device for this purpose. The split matrix 70 can be structurally equivalent to the prototype matrix used in the general case of using the device (see Patent No. 2395361, Fig.1, 8), its difference is only in that in the proposed device, the split matrix can be reinstalled at least 12 times and the blunt cutting edges can be moved to sharp edges over the entire length of the matrix in the transverse direction when mounting the nozzle of rectangular shape. Another difference is that in this particular case, the split matrix 70 can only be used using the integral matrix 69 and if two equal cross-sectional grooves 68, 81 separated by a jumper 78 with a thickness of at least 3.0 mm are made in the device’s body 1, the cross section of which cannot be increased. In this particular case, the cross-sectional size of the detachable matrix 70 is chosen equal to the cross-sectional size of the integral matrix 69. When using the detachable matrix 70 installed in the groove 68, when the sheets are joined, it cyclically expands in cross section and acts on the jumper 78. If the expansion of the detachable matrix is nothing limit from exposure to the thin jumper 78 from the side of the groove 81, it will bend and fail. To prevent this from happening, it is provided that the dimensions of the integral matrix 69 with the split matrix 70 and the groove 68 with the groove 81 in this particular case, the cross-section of the device is made equal, in the groove 81 the integral matrix 69 is fixed with screws 85, on which the jumper 78 is supported. B as a result, when attaching a round or rectangular pipe 87 through the insert 88, the support 86 from the integral matrix 69 will not allow the jumper 78 to bend. The split matrix 70 consists of two plates of the end parts 89, 90. Four cutting edges 91 are made on each of the plates, 92, 93, 94, concave chamfers 97, 98, into which the springs 99 are inserted. Between the plates of the extreme parts 89, 90, the middle part 100 is installed with a cross-sectional size smaller than the cross-sectional size of the plates 89, 90 of the extreme parts of the detachable matrix package 70. On the middle plate parts 100 of the detachable matrix 70 are made ribs 101, 102 (see Fig.9, 10). In the assembly of the plate of the outer parts 89, 90 and the plate of the ribs 100 form a groove 103. To reinstall the detachable matrix for the entire length, at least two or three short longitudinal grooves 104 are made of a circular, longitudinal or cross-shaped shape at a distance from each other in steps at least twice the length of the cutting edges of the plates of the extreme parts 40, 41 of the punch package 74. In the grooves 104, the matrix 70 is fixed with screws 75 so that it can be moved and fixed in two planes. A pack of punches 74, configured to mount three or four sheets with a total thickness of 2.0 mm to 4.5 mm for the general case of using the device, is converted into a special package of punches 105, designed for fastening thin-walled sheets, into a package with a total thickness of 1 , 2 mm to 1.4 mm. To this end (not shown in the drawing), the middle part 42, sharpened repeatedly to 3.0 mm, completely grind the protrusion 43 into the concave chamfers 47, 48. The truncated area 44 is shifted to the cones made at 80 degrees due to sharpening up to 3.0 mm . Thus, the working parts: the steps 36, 37 of the plates of the extreme parts 34, 35 and the truncated platform 44 will be located in the same plane, and the semicircles 51 are pressed against the plane of the groove 32. The special package of punches 105 differs from the package of the prototype punch (see Patent No. 3395361 , Fig. 8) only in that instead of four, he has two cutting edges 40, 41 that will be in the same plane relative to each other, however they will be shifted to the outside behind the edges of the steps 36, 37 by a distance of 0.2 mm, and also on the opposite side on each of their plates us semicircle 51. In this way they will not significantly cut into the bottom of the stack of sheets connected and reduce the quality of the connection. However, in this position, the cutting edges 40, 41, notching the sheets, will significantly reduce the applied force on the handles of the device. The semicircles 51 made on each of the plates of the punch package allow eliminating bias during load transfer by the oblique bottom 33 of the punch holder 31. In this form, the punch package 105 is fixed in the groove 32 of the punch holder 31.

In this particular case, in order to be able to insert a branch pipe sheet 65 into the mouth of the device, the handles are screwed into the nuts 4, 14 and positioned horizontally along the longitudinal axis of the housing.

In an embodiment, in a particular case, in order to maintain the plane of the flange from the tires onto which the gasket is installed, that is, the mirrors, the device has a special conductor in the form of a plate 106 fixed in the housing 1 and movable and fixing the stop 107 on it. The stop 107 has a groove 108 for installing a mounting corner 109, in which a hole 110 is made for forcing metal into it of one sheet of a U-shaped stiffener until it stops in another sheet thereof. The mounting bracket is pre-inserted inside the U-shaped stiffener 111 of the tire 112 (see Fig. 11, 12). In order to obtain a plane located opposite the hole 110, an insert in the form of a screw 115 is screwed into the threaded hole 73 of the bottom 113 of the groove 114 at the same level with the cutting edges 116 of the integral matrix 69 (see Fig. 7, 8, 11). The blunt sections of the cutting edges 116 are replaced with sharp sections of the integral matrix 69 by reinstalling them in the transverse direction of the body on one round, longitudinal or cross-shaped through hole 76 in one direction or another, as well as additional replacement of the edges due to its rotation by an angle from 0 to 180 degrees. For this, the integral matrix 69 is previously exempt from; fastening in the groove 68 from the fixing screws 77 and 71. In addition, reinstallation with the replacement of the above-mentioned edges is performed by turning the integral matrix 69 at an angle from 0 to 180 degrees around its axis.

In the same way, reinstalling the detachable matrix 70. The advantage here is that each plate of the extreme parts of the matrix 70 is additionally reinstalled with rotation around its axis relative to the middle part on both its sides, replacing at least 12 times the blunt cutting edges 91, 92, 93, 94 to sharp when attaching branch pipes of circular cross-section with a diameter of up to 100 mm.

To implement the method in the General case of its use when fastening three or four sheets in a package of angular U- or L-shaped with a U-shaped stiffener and a dead-end spring plate, covering tightly or with a gap a flat sheet located parallel or non-parallel to the spring plate with the total thickness of from 2.0 mm to 4.5 mm, the device is used as follows.

The handle of the earring 3 and the handle of the fork 12 are screwed into the nuts 5, 13, positioned across the housing 1 and the arms are moved apart in different directions. A sample of the aforementioned packet of sheets is placed in a through-cut formed by two cutouts in the pharynx 61 and a cut-out 60 under the punch holder 31, and a flat portion is placed opposite the floating packet of punches 74 and the previously set depth of cut on the sample is checked. Handles reduce towards each other to the stop. At this point, faces 49, 50 at an angle of 50 to 60 degrees to the cutting edges, cutting edges 40, 41, steps 36, 37 of the cone 38.39, made at an angle of 50 to 60 degrees to the steps of the plates of the end parts 34, 35, will go inside the cutting edges of the groove of the integral matrix 69 at a distance of up to 0.5 mm. If the line of the plane of the cutting edges of the groove of the integral matrix does not coincide with the line on the package of punches, the integral matrix is released from the fastening and moved with a groove along the package of punches until the above-mentioned lines are combined. If during external inspection there are gaps and cuts in the hollow of the connected specimen, the tolerance is adjusted to a greater or lesser side from the previously set penetration depth by measuring the total thickness of this particular specimen. To do this, the integral matrix 69 is freed from fastening with screws 71, 75, 79, 80 and moved to a position where the line of its cutting edges is next to the line marked on the package of punches 74. This will mean that the cutting edges 40, 41 are inward beyond the cutting edges of the groove of the matrix 69 to 0.5 mm with a tolerance in the greater or lesser side. The adjustment of the insertion depth on the samples is completed when there are no visible undercuts in the cavity, and there will be a visible gap between the cones 38, 39 and the cutting edges of the matrix groove 69. The aforementioned package 82, 83 of three or four sheets is placed in the throat and it is connected by a direct stroke with a floating package of punches 74 and an integral matrix 69 (see Figs. 1, 2). When this truncated platform 44, made on the protrusion 43, the metal is pressed and compacted in the bottom of the cavity. At the same time, the metal is pressed through with faces 49, 50, cutting edges 40, 41, steps 36, 37 inside behind the cutting edges in the groove of the matrix to a depth of 0.5 mm with a tolerance of greater or lesser side. In this case, the cones 38, 39 made behind the steps 36, 37 push the metal all the way through the metal, displaced from the bottom of the cavity into the cutting edges of the matrix 69 in different directions from the axis of symmetry. At the same time, above the groove of the matrix, when connecting a package of three sheets, the third sheet is notched, pressed and pulled out for the second, and the second for the first, and when connecting the package of four sheets, the fourth sheet is notched, pressed and pulled for the third, third for the second, second for the first in different directions from the axis of symmetry. At the same time, in the cavity section, not limited by the matrix groove due to the pressed metal into the openings between the middle part 42 and the faces 49, 50, and also due to the lateral springing of the plates of the extreme parts 34, 35, they are moved and cut into the sides of the cavity, shaping it in the form trapezoid. After that, the cross-sectional size of the punch package at the base of the molded cavity will exceed the cross-sectional size of the matrix groove. At this point, the plates of the extreme parts 34, 35 are fixed in the cavity of the molded trapezoid of the completed connection (see Figure 4,). The handles are spread apart, the bulge with the bottom and the hollow fixed to the plates of the extreme parts 35, 36 is removed from the groove of the matrix 69. Then, the connection made together with the connected sheets is moved all the way to the side of the through cutout of the pharynx 61 of the housing 1 until they stop. The final dilution of the handles in different directions from each other located under the edges 49, 50 of the plates of the extreme parts 34, 35, the pressed metal is left in the cavity. Released from fixing by springing to the center of the axis of symmetry in the plate formed as a trapezoidal cavity of the plate, the extreme parts 34, 35 are output without cutting its ends (see FIGS. 4, 5.). After that, the cross-sectional size of the package of punches again becomes equal to the size of the cross-section of the groove of the matrix. The device is moved to another location for similar connections.

In the particular case, when it is necessary to increase the strength of sheets connected in a package by additional opposed joints made on flat sections in places between previously made joints on the other side of the joint, the device is used in the following order. The device is rotated from 0 to 180 degrees, one part of the corner part of the package of three or four sheets is placed in the groove 81 and pressed to the jumper 78 of the housing 1, and the other part, having a flat section, is placed opposite the floating packet of punches 74 and the groove of the integral matrix 69 are then combined as described above.

Replacing the blunt sections of the integral matrix 69 with sharp cutting edges is as follows.

The matrix 69 is freed from fastening with a screw 71, screws 79, 80 and screws 75 in the groove 68 of the housing 1, then it is moved in the transverse direction to one side or the other at a distance of the adjacent through circular, longitudinal or cross-shaped hole 76 along the entire length of the matrix 69 with a length of no more the length of the housing, and then it is fixed with the aforementioned screws. When the cutting edges of the matrix 69 are blunted on one side along its entire length, the matrix 69 freed from the aforementioned screws is rotated by an angle from 0 to 180 degrees around its axis. A groove with sharp edges is placed along the entire length of the groove of the die 69 opposite the punches pack 74, and then it is fixed in the groove 68 by the above-mentioned screws.

In the particular case, when using the device to connect a package of three or four sheets, the first of which is a stiffener and the third or fourth is a dead end spring plate, including tire flanges 15 × 15 × 8 mm, 20 × 20 × 8 mm, 30 × 30 × 10 mm, 35 × 35 × 10 mm with a sheet of duct, while one sheet facing the package of punches is located obliquely to the side of the package of punches, the device is used in the following order. Choose a punch holder 31 with an oblique bottom in the groove 32, the offset of which is 0.45 mm from the plane of the groove 32, and install it in the housing 1. An elongated from 0.4 mm to 0.45 mm plate of the outer parts 35 is installed over the middle part 42, and a shortened from 0.4 mm to 0.45 mm plate of the extreme parts 34 is installed under the middle part 42 of the package of punches 74, which are fixed in the punch holder 31. The difference in the displacement of the working parts of the plates of the extreme parts 34, 35 in the presence of an oblique bottom deviated from the vertical axis at 0.45 mm, will be in the Lah from 0.85 mm to 0.9 mm. Accordingly, the plane of the working parts of the plates 34, 35 of the package of punches 74 in most cases will be located in a position parallel to the plane of the inclined sheet. At the same time, on the protrusion 43 of the middle part 42 of the package of punches 74 below the truncated platform 44 with the cutting edges 45, 46, two concave chamfers 47, 48 are performed (see FIG. 6).

The depth of penetration is determined in the order described when using the device in the general case of its use with moving the cutting edges of the groove of the matrix 69 to the cutting edge of the elongated plate 35 of the extreme parts to 0.5 mm with the levers 6 and 15 fully reduced. That is, the depth of penetration is counted by the cutting edge of the elongated plate of the extreme parts 35. Then, the aforementioned package of sheets is placed in the throat of the device and it is connected by direct travel of the package of punches 74 with an integral matrix 69 in the order of application of the device in all cases of its use knowledge. At the same time, the plates of the end parts are fixed in the form of a trapezoid in the connection of the sheets into the bag in the cavity, and the middle part 42 of the punch package 74 is fixed to the bottom of the cavity by the metal inserted into the concave bevels 47, 48. The metal introduced into the bevels 47, 48 from the bottom of the cavity , the joints are cut with cutting edges 45, 46 of the truncated pad 44 at the stage after the package of punches 74 is withdrawn from the joint during its reverse stroke and the middle part 42 is freed from fixing in the bottom of the joint. In the case of making connections from the back of the joined joint in the gaps of previously made connections, the first sheet facing the punch pack 74 will not be inclined. Therefore, the elongated plate 35 and the short plate 34 are interchanged relative to the middle portion 42 (see FIG. 6). In this case, the working parts of the plates of the extreme parts 34, 35 of the punch pack 74 will be aligned. U-shaped stiffening ribs of flanges from tires 15 × 15 × 8 mm; 20 × 20 × 8 mm; 30 × 30 × 10 mm; 35 × 35 × 10 mm are placed, pressing them to the jumper 78 in the groove 81, and additionally fix the sheets on the other side of the joint by the method and device made for use in the general case of its use.

In a particular case, for connecting straight sections of sheets into a package of three or four sheets with a total thickness of 2.0 mm to 4.5 mm L-shaped, one of which is a flange sheet 66 of the nozzle 65, the other is a sheet 67 of a flat duct section , the third is liner sheet 88, using a floating pack of punches 74 and an integral matrix 69. Depending on the tightness of the installation conditions of ventilation in the aforementioned flat section intended to be connected to the bag, the flanging sheet 66 may be superimposed on the duct sheet 67, and ozhet located on its inner side. A sheet 88 of the liner can be superimposed either on the flange sheet 66, or superimposed on the sheet 67 from the inside of the duct.

If a flat section of four sheets is equipped for connection to the bag, two inserts can be used simultaneously, one on top of flanging sheet 66, the other on sheet 67 from the inside of the duct.

On the lever, the handle 6 is fixed in the nut 4, and on the other lever, the handle 15 is fixed in the nut 14. As a result, they will be located along the longitudinal axis of the housing 1 and will make it possible to release the throat when introducing the handles 6, 15 into the pipe 65. Move the bag punches 74 in the extreme position (see Fig. 9) and, accordingly, install the device on the pipe 65. The throat device is placed on the pipe 65, turned to the side to the central axis of the pipe 65. The extreme part of the pipe 65 (see Figs. 1, 9, 10 ) pressed to two chamfers 63, 64, made in the pope the river groove 62 on the housing 1, and move along them until the aforementioned flat section is located opposite the package of punches 74 and the integral matrix 69. Then the handles are brought to the end towards each other and the aforementioned flat section is connected into the package by the direct course of the floating package punches, in a manner intended in the general case of its use. If necessary, with relatively large overall dimensions of ventilation, the connection of the pipe to the duct is made from its inner side and places in the gaps of previously made connections.

In the particular case when it is necessary to fix a flat section of three or four with a total thickness of 1.2 mm to 1.4 mm of L-shaped sheets, the package includes one flanging sheet 66, another sheet 67 of the duct plane, a third or the fourth sheet 88 of the liner, the device is used in the following order. In the housing 1, two cross-sectional equal grooves 68 and 81 are made, separated by a jumper 78. In the groove 68, a detachable matrix 70 is installed and fixed. The protrusion 43 is sharpened on the middle part of the package of punches 74, the truncated platform 44 is shifted to the cones made at an angle of 80 degrees, steps and a truncated platform are set in one plane, and the cutting edges of the plates of the extreme parts are set in one plane with a shift of 0.2 mm beyond the steps and a package of punches 105 is obtained. If such assembly or sharpening is impossible, a special package 105 make. In the groove 81 under the jumper 78 with a thickness of not more than 3.0 mm, an integral matrix 69 is fixed and used as a support 86, on which the jumper 78 is supported to protect it from deflection by breeding the plates of the extreme parts 89, 90 of the matrix 70 when attaching the aforementioned sheet package ( see Figs. 9, 10). To select the depth of insertion, the detachable matrix 70 is moved by a groove on the package of punches 105 to a depth of 0.5 mm to 1.0 mm to fit snugly against the rib of the middle part 100 of the matrix 70 with the levers 6, 12 fully brought together. To enable the device to be inserted into the nozzle 65 lever handles 6, 15 are fixed in nuts 4, 14 on the yoke 12 and earring 3 so that they are located along the axis of the housing 1. Behind the handles of the device with the extended arms 6, 15, the throat formed by a through cutout in the housing 1, is inserted onto the pipe sheet 65 and move it along two chamfers 63, 64 in the housing in the transverse groove 62, located behind the through cutout of the housing 1. Next, the device is turned with the center of the nozzle 65 into the transverse groove 62 and installed in a position parallel to the wall of the nozzle 65. In this case, a specially made or converted package of punches 105 will be located opposite : a flat section of a packet of sheets with a total thickness of 1.2 to 1.4 mm. The flat portion consists of a flanging sheet 66 and located behind the sheet 66 or under the sheet 67 of the duct. The flange sheet 66 of the pipe 65 can be located either below the sheet 67 of the duct, improving the aesthetic appearance of the connection and simplifying the hole for the pipe 65 or above the sheet 67 of the duct. If necessary, an insert with a thickness of 0.5 mm to 0.7 mm of a rectangular or round shape with a size not exceeding the flanging sheet 66 is installed on a formed package of two sheets with a thickness of 1.0 mm to 1.4 mm, and the package is connected directly during the course of the punch package 105 and the detachable matrix 70 with the presence of an integral matrix 69, on which the jumper 78 is supported. When attaching the nozzle 65 of a round shape, for example, with a diameter of up to 100 mm with an air duct, it is impossible to change the blunt sections of the cutting edges in the transverse direction, t since the protruding parts of the matrix 70 on the outside of the housing will prevent the nozzle 65 from being installed. Therefore, the blunt cutting edges are changed to sharp by turning the plates of the outer parts 89, 90 around their axis by 180 degrees and sharp cutting edges are placed in the groove of the matrix 70. When attaching rectangular nozzles 65 with a cross section from 100 mm × 100 mm to 1000 mm × 1000 mm, the blunt cutting edges are changed to sharp by moving in the transverse direction of the split matrix 70 in groove 68 by at least one of three circular longitudinal or cross different through holes 76 in one direction or another. Or by reinstalling with rotation of the plates of the extreme parts 89.90 around its axis, followed by their fastening in the groove 68 in the manner described above (see Figs. 9, 10).

In the particular case of the manufacture of tire flanges, the device is used in the following order. A conductor is installed on the housing 1, the plate 106 of which is fixed with two screws 85 in the threaded holes of the housing 1 and onto which a stop 107 with a groove 108 is inserted for installation of a mounting angle 109 with an opening 110 for pushing metal of one sheet of U-shaped stiffener into it focus in another sheet thereof (see Fig. 8, 11, 12).

In the groove 108 of the stop 107, a mounting bracket 109 is installed with an opening 110, which is pre-inserted into the U-shaped stiffener. The hole 110 of the mounting bracket is aligned with the adjustment of the plate 106 in height by screws 85 located opposite the package of punches 74.

After that, the plate 106 and the limiter 107 are fixed. In the groove of the integral matrix 69, a screw insert 115 is screwed into one of several threaded holes 73, screwed at the level of the cutting edges 116 of the matrix 69, and form a plane that is opposite the hole 110 of the mounting corner 109 with a thickness of 2.0 mm to 4.0 mm , then the matrix 69 is fixed. Handles are placed across the body. The depth of insertion of the truncated platform 44 of the package of punches 74 into a package of sheets consisting of two sheets with a thickness of 0.7 mm to 1.0 mm of a U-shaped stiffener is adjusted in the following order.

For example, a mounting angle 109 with a thickness of 2.0 mm with an opening 110 is introduced into a U-shaped stiffening rib and installed in a conductor. By a truncated pad 44 of the pack of punches 74, one sheet of the U-shaped stiffener is pressed into the hole 110 of the mounting bracket all the way into the other sheet of the U-shaped stiffener (see Figs. 11, 12). If there is no bulge and unevenness on the back side of the non-extruded sheet of the U-shaped stiffener, that is, the flange mirror, the adjustment of the depth of cut is considered complete.

Similarly, the insertion depth adjustment is selected when using fixing angles 109 with a thickness of 4.0 mm, in which an opening 110 with a diameter of 6.0 mm is used. In this case, it becomes possible to push the metal into the hole 110 in a straight stroke not only with a truncated platform 44 of the middle part of the punches pack 74, but also with the plates of the extreme parts 34, 35, as well as the punches pack 105.

A device is known (see A.s. No. 1286099, 1989), in which the extreme parts of the split matrix are spring-loaded, made with two pairs of cutting edges parallel to each other, making cuts in the form of two straight parallel lines. In the device, one sheet is inserted behind the second sheet in a plane parallel to the working part of the polished plane of the integral punch. However, it is impossible to fix the sheets in a bag with a total thickness of 2.0 mm to 4.5 mm by a known device with a manual drive due to the application of large forces to an incomplete punch. This requires a machine drive. In addition, the plates of the extreme parts of the matrix in the known device are not moved in order to increase the number of reinstallations in the transverse direction to the axis of the device, which reduces the life of the matrix. They can turn over when their cutting edges are worn, and if the second pair is dull, they can be replaced by others. However, in the known device, the cutting edges of each of the plates of the extreme parts cannot be reinstalled more than four times, and this amount is not enough during operation. In a known manner and device it is impossible to mount the sheets of pipes to a flat sheet of the duct due to the fact that it is impossible to bring in the pipe in order to accomplish this. In addition, in the known device, the punch is non-integral, respectively, when punching it cannot expand in the transverse direction from the axis of symmetry.

A device is known (see Patent No. 2281827), the working parts of the package of punches of which are displayed in one plane. Known floating bag of punches (see Figure 3.) is close to the proposed package of punches intended for fastening sheets in a bag thickness, in particular, from 1.2 mm to 1.4 mm However, the absence of a truncated platform in its middle part does not allow reliable fastening of thin-sheet parts in a package that experience tensile load without impacting the bulge by the reverse stroke of the punches package. In addition, the plates of the extreme parts, slightly moving in the transverse direction, are not able to move in the transverse direction from the axis of symmetry so as to securely fasten in the cavity of the connection, therefore, to remove the bulge from the groove of the matrix on the slide, a striker is provided for applying a light blow to bulges.

A device is known (see RF Patent No. 239361), which is the closest in technical essence to the described device. The device connects the sheets without striking the bulge and freely releases the connection made from the groove of the matrix with a total thickness of 2.5 to 3.0 mm. However, when fastening bags up to 4.5 mm thick, the loads applied to the device handles increase. In addition, when fastening parts with increased convex strength, it is necessary to strike with the edge of the anvil, and with a thickness of the sheet pack, for example, 4.5 mm, the strike has to be applied several times.

The disadvantages of the device include the impossibility of connecting sheets to a package within the boundaries of flat sections of three or four sheets with the smallest and largest sizes of P- or G-shape with a U-shaped stiffener and a dead end spring plate, for example, 15 × 15 tire flanges × 8 mm; 35 × 35 × 10 mm. The device also cannot fix tire flanges with dimensions of 15 × 15 × 8 mm; 35 × 35 × 10 mm with a flat sheet of duct from the opposite side of the joint in the places between previously made joints. Additional disadvantages include the inability to translate blunt cutting edges sharper more than two times due to reinstalling the insert between the cheeks and both sides of the matrix without increasing the overall dimensions of the matrix and the number of inserts in the form of plates. In the known device, the task of changing the package of punches with the displacement of its plates of the extreme parts relative to the middle part in the desired position for a given load is successfully solved. However, often in arrhythmic production it is often impossible to quickly re-arrange the device for fastening sheets into a bag, one of which, facing the bag of punches, is inclined, and the next batch of sheets connected to the bag is parallel to each other. In such cases, it is often necessary to readjust with a displacement of the working parts a package of punches with a calculation of the depth of cut, which is made with the possibility of its fixed and movable fastening on the slider. In this case, the displacement of the above-mentioned details of the punches pack should be reliably fixed on the slider, since gaps are formed between at least one of the two plates of the extreme parts of the punches pack due to their displacement and the ram pusher.

It is impossible to securely fasten one sheet after another into a pack of three or four sheets up to 4.5 mm thick in the area above the cutting edges of the matrix groove. At the same time, at the same time, securely fasten in the cavity of the plates formed in the form of a trapezoid the extreme parts of the punch package, in order to withdraw the finished connection from the die groove during the reverse stroke of the punch package. At the same time, at the same time, seal the metal of the bottom of the cavity inside the portion beyond the cutting edges of the die of the matrix, in the section of the formed bulge by the limited groove of the die in the forward stroke of the punches pack to obtain such mechanical properties that there is no need to strike the bulge with the reverse stroke of the punches pack.

A floating bag of punches of the known device due to the readjustment of its component working parts can be set and fixed in a position in which it is quite possible to connect the sheets into a bag with a total thickness of 1.2 mm to 1.4 mm. However, it is not possible with the known device to fasten sheets into an L-shaped bag, for example, a flange sheet facing the outside of the nozzles, the length of which can be from 50 mm to 120 mm or more, with a flat sheet of the duct due to the inability to arrange devices of the aforementioned sheet packages. Or, conversely, insert a device onto the aforementioned L-shaped parts, so that their flat section with a thickness of 2.0 to 4.5 mm is located opposite the package of punches and the integral matrix. Or place a flat section with a thickness of 1.2 mm to 1.4 mm opposite the rearranged special package of punches and a split die. The device does not provide readjustment of the handles fixed in the same nuts on the earring and fork for the location of the handles parallel to the longitudinal axis of the housing. These additional nuts or other places for fixing the handles in the known device are absent.

Accordingly, it is impossible to mount the nozzles with the aforementioned flat sections of an L-shaped form with the duct plane, independently, with or without an insert in the bag with a total thickness of 1.2 to 1.4 mm and a total thickness of 2.0 mm to 4.5 mm

The inability to save from crushing the surface of the tire flange as a result of forcing the metal into the hole of the mounting bracket due to the lack of a flat portion in the groove of the die and reliably ensuring alignment of the punch package with the hole of the mounting bracket.

The inability to move the package of punches to a distance of more than 1.2 mm using an eccentric without increasing the overall dimensions of the device as a whole.

The inability to use the package of punches of the known device in one of the special cases, with the aim of further fixing its middle part in the bottom of the cavity as a result of the direct stroke of the package of punches. In order to simultaneously with the plates of the extreme parts fixed in the molded non-isosceles trapezoid fixed in the side walls of the cavity together, pull out the convexity of the connection made from the groove of the matrix.

It should be noted that due to the fact that in the packet of sheets one sheet is inclined relative to the other, the sides of the molded cavity in the form of a trapezoid are not equal to each other, respectively, the efforts applied when outputting the outer parts to each plate are different. Therefore, there is a need for additional fixing of the middle part in the bottom during the process of fastening the sheets in a package in which one sheet is inclined.

Part of the above disadvantages are eliminated by a special device when implementing the method in all cases of its use.

A device for connecting sheet metal parts in a package of three or four sheets, superimposed or covering each other, in the form of an angular U- or L-shaped with a U-shaped stiffener and a dead-end spring plate, covering a flat sheet tightly or with a gap, located in parallel or inclined to the spring plate, contains a monolithic body with a through-cutout, in the longitudinal groove of which is placed an earring with a hole in which an axis is pivotally connected to the body, with a fixed nut for fastening one hand in it yatki. The earring is connected by an axis to the fork, with a similar nut made on it, for attaching another handle in it. The plug is connected to a slider containing spikes tightly inserted into two guide bodies of the housing, under which a T-shaped guide is made to accommodate two other studs of the slider having a T-shaped section. The slider contains a punch holder with a cutout to accommodate a U-shaped stiffening rib with a dead end spring plate, a groove with a flat bottom, in the threaded holes of which two screws are secured in the grooves of the floating pack of punches with cones extended outside it with the possibility of movement and fixing in their grooves in the groove punch holder. The middle part of the package of punches for use in one of the special cases can be made with a slight bulge and a hollow, in the form of a flat spring, the deflection is obtained, for example, as a result of heat treatment. In addition, a protrusion is made on it, extending beyond a cone made at an angle of up to 80 degrees with a cross section equal to the size of the length of the cutting edges of the punch package. A truncated area is made on the ledge. On the other hand, two transverse grooves are made in the housing, separated by a jumper. In one groove above the jumper, an integral matrix is placed with a length size of not more than the length of the housing. The integral matrix along the axis of symmetry contains two longitudinal grooves with two cutting edges in each, at the bottoms of which are spaced from each other at a distance equal to twice the size of the cutting edges of the plates of the extreme parts, at least two or three threaded holes. And also made perpendicular to them with the same step, at least two or three round, longitudinal or cross-shaped through holes. In the aforementioned through holes, the matrix is secured or released to move with at least two or three screws in the threaded holes of the housing and in the jumper. In this case, the screws do not extend beyond the outer edge of the jumper and do not prevent the insertion of U- or L-shaped parts into the groove under the jumper. Along the longitudinal axis in the threaded holes of the housing, if necessary, the matrix is moved or limited from moving by at least two or three screws and secured by one screw from longitudinal movement in one of at least two or three of the aforementioned threaded holes in the bottom between the cutting edges groove of an integral matrix.

In a variant of use in one particular case, when fastening flat portions of a pipe sheet with a duct sheet and a liner with a total thickness of 1.2 mm to 1.4 mm, the device can be made with two equal grooves along the cross-section on both sides of the body bridge. In two equal grooves in the cross-section, one-piece and detachable matrices of equal cross-section can be placed. The split matrix is made in the form of two plates of the extreme parts with four cutting edges on each, two on each of the opposite sides and two concave annular chamfers to accommodate the annular two springs. The cross-sectional size of the middle part of the split matrix is smaller than the cross-sectional size of the plates of the extreme parts, the difference is from 0.5 mm to 1.0 mm. On two opposite sides of the middle part, two ribs are made along the entire length of the matrix. When assembled as a whole, the plates of the extreme parts and the middle part covered by placed ring springs in concave chamfers together form a groove with a depth of 0.5 mm to 1.0 mm. At least two or three through circular, longitudinal or cross-shaped holes are made along the entire length of the matrix at a distance equal to twice the size of the cutting edges of the plates of the extreme parts of the punch package, which are used in the general case of the device, adapted for use when connecting sheets in package using a split matrix. To change the package of punches used in tandem with an integral matrix from its middle part, by sharpening up to 3.0 mm to the border of a cone made at an angle of 80 degrees, sharpen the protrusion by placing the steps and the truncated platform in the same plane. And the two cutting edges of the plates of the extreme parts are located in the same plane, but with an offset of 0.2 mm beyond the outer side of the steps. In this form, the re-arranged bag of punches is ready for fastening thin-walled sheets in a bag with a thickness of 1.2 mm to 1.4 mm. In order to preserve the jumper from destruction in the groove underneath it is placed an integral matrix in this embodiment, the joints of the flanging sheet with the duct sheet are cyclically expanded by a detachable matrix, on which the body bridge is supported, keeping it from bending.

In the particular case, in the case of frequent change in the process of work of packs of sheets with parallel arrangement relative to each other on packs of sheets in which one sheet is inclined, use a pre-prepared slider with a punch holder. As a result of the displacement of the sides of the groove of the punch holder relative to the longitudinal axis by 0.45 mm, an oblique bottom is formed. Prepare in advance various from 0.4 mm to 0.45 mm along the length of the plate of the extreme parts. As a result of the reinstallation of the above parts relative to the middle part, the accommodations of their working parts are achieved at a distance of 0.8 mm to 0.9 mm. It was found that when fastening flanges from tires 15 × 15 × 8 mm, 20 × 20 × 8 mm, 30 × 30 × 10 mm, 35 × 35 × 10 mm with a duct sheet, in which the sheet of the spring plate is inclined in most cases, with the aforementioned displacement of the plates of the extreme parts, no undercuts are formed in the cavity of the joint. In this case, on the protrusion of the middle part of the plate, made in the form of a flat spring below a truncated platform, equipped with two cutting edges, two concave chamfers are made. Concave chamfers in the process of joining push the metal through and fix the middle part of the punch package in the bottom of the cavity. Thus, the convexity from the groove of the matrix after the connection with the forward stroke of the punch package is pulled out by the middle part together with the fixed plates of the extreme parts by the reverse stroke of the punch package. After moving and stopping the sheets connected into the package as a result of restricting its movement by the throat of the housing and further advancement of the punch package by the cutting edges of the truncated platform, the pressed metal in the concave chamfers of the protrusion is cut and the middle part is freed from fastening in the bottom of the cavity.

The presence in the device of the above characteristics ensures the achievement of the following technical results.

The presence of a cutout under the groove in the punch holder, a through transverse cutout in the body forming the pharynx, makes it possible to install angular parts, including U-shaped stiffening ribs of the flanges from tires 15 × 15 × 8 mm, 35 × 35 × 10 mm so that the punches pack will be located opposite the flat portion of the joined sheet pack.

The presence of two nuts on the fork and earring, fixed perpendicular to each other, allows you to place the handles across the device, mount the flanges from the tires with the air duct and place the handles along the device when attaching flanging sheets with flat sheets of air ducts.

The presence of a T-shaped guide ensures the execution of a monolithic body instead of a detachable one in the form of two cheeks covered by a matrix, significantly reduces the cost of manufacturing the device, eliminates due to stiffness shifts and deviations when moving the slider, and simplifies the alignment adjustment between the punches and the matrix.

The presence of a punch holder allows you to make a cutout on it to establish a U-shaped stiffener and a groove for attaching punch packages without a pressure adjuster and centralizer. At the same time, three semicircles on the details of the punches package are always tightly pressed to the plane of the oblique bottom, which ensures reliable transfer of efforts to cut sheets into the package.

In addition, the cones of the punch package can be pulled out of the punch holder.

The presence of a groove in the case above the jumper with a thickness of not more than 3.0 mm allows you to place an alternately one-piece and detachable matrix in it and move them in two planes up to 2.0 mm when setting the depth of cut. Allows you to reinstall the matrix with an angle of 0 to 180 degrees around its axis and move it to one or more cross-shaped through holes in the transverse direction in different directions from the longitudinal axis of the housing. As a result, the blunted cutting edges are replaced by sharp ones and placed in front of the punches pack. In addition, the platinum of the extreme parts with four cutting edges of the split matrix can be rotated around its axis by an angle from 0 to 180 degrees and thereby change the blunt cutting edges to sharp.

The presence of a groove under the jumper, equal in cross section to the groove above the jumper, allows you to install an integral matrix in it and use it as a support at the time of fastening the flanging sheet of the pipe with the duct sheet, protecting the jumper from destruction when expanding the plates of the extreme parts of the split matrix.

The presence of a jumper with a thickness of not more than 3.0 mm allows you to make a groove under it with the ability to place U-shaped stiffeners in it of the flanges of their tires 15 × 15 × 8 mm, 35 × 35 × 10 mm, place the plane of the spring plates to one-piece and detachable matrix and provide the ability to make connections with a package of punches when fastening sheet packages with opposite connections from the opposite side in the places between previously made connections. The presence of at least two or three clamp screws along the longitudinal axis of the housing provides release, movement of at least a distance of at least 2.0 mm and fixation of one-piece or detachable dies after setting the depth of cut.

The presence of faces made at an angle from 50 to 60 degrees to the cutting edges provides an increase in the pressed metal beneath them when the sheet package is pressed, which in turn provides more intensive cutting of the extreme parts with extended cones beyond the punch holder into the sides of the cavity of the punch, shaping it in the form of a trapezoid, which fix the package of punches in the cavity of the connection.

The presence of a flat spring, made by heat treatment in the middle part, allows you to enter the package of punches with a cross section equal to the cross section of the matrix groove, when adjusting the depth of cut and in the process of making joints, to compensate for the forces of constant deflection of the cones of the plates of the extreme parts, which increases their durability, as well as in the spring state fix the punch package in the punch holder without a gap.

The presence of cones made at an angle of 50 to 60 degrees behind the steps allows you to push the package of sheets into the cavity in the area with a limited groove of the matrix, that is, inside the groove, with the formation of two jumpers made of metal between the cones and the cutting edges of the matrix, providing a tight connection with a simultaneous increase metal density in the bottom and sides of the cavity and under the faces. In addition, the cones ensure the separation of the plates of the extreme parts in different directions from the axis of symmetry into the walls of the cavity without their expansion in the cutting edges of the groove of the matrix. At the same time, in the cavity, in the area not limited by the groove of the integral matrix, when connecting a package of three sheets, the third sheet is cut, pressed and pulled out for the second, and the second for the first, and when connected to a package of four sheets, the fourth sheet is cut, pressed and pulled for the third, third - for the second, second - for the first in different directions from the axis of symmetry of the cavity, which increases the tensile strength of the joint. And forcing the bottom into the hollows in the area limited by the groove by the protrusion with a truncated platform increases the strength of the shear joint.

The above allows you not to hit the bulge in order to increase the density of the pressed metal, since it is pressed at least half the third or fourth sheet in the bottom of the cavity compared with the prototype.

The presence of a transverse groove in the casing behind the through cutout, chamfers on the casing allows you to place in the device the sphere of a sheet of a round pipe on one side and its L-shaped sheet superimposed on a flat sheet of the duct with an insert on the other hand, opposite the punches pack. And also to place the aforementioned package of sheets opposite the one-piece matrix with a total thickness of the package of sheets from 2.0 mm to 4.5 mm and a detachable matrix with a total thickness of the package from 1.2 mm to 1.4 mm.

The presence of the conductor and the plane in the groove of the integral matrix created by the insert in the form of a screw screwed into the groove, while forcing the metal of one sheet of the U-shaped stiffener into the hole of the mounting corners until it stops in its second sheet, ensures the safety of the tire flange mirror and the installation of gaskets on it.

The presence of uneven plates of the extreme parts, differing in length from 0.4 mm to 0.45 mm, allows simultaneously with the plane of the oblique bottom, offset by 0.45 mm from the vertical axis, to reinstall them for fastening sheets in a package of three or four sheets with parallel or an inclined arrangement of sheets, with a displacement of the plates from 0.8 to 0.9 mm, which makes it possible to readjust the device more quickly.

The presence of equal distances between the cutting edges in the cross section of the groove of the integral and detachable dies and the equal size of the cross section of the package of punches, measured above the cones, provide a spacer in the process of forcing sheets connected into the package.

The proposed device can be performed in the variant in the General case of its use. For example, for fastening flat sections of three or four sheets with a total thickness of 2.0 to 4.5 mm, U- and L-shaped, by direct travel of a floating packet of punches, it is identical and equivalent to the claims.

The proposed device can be made in the embodiment for fastening flat sections of three or four sheets with a total thickness of 2.0 mm to 4.5 mm in the general case of its use and, at the same time, if necessary, in the particular case of its use, by the direct course of the punch package. For example, for fastening sheets on one side and the other side in the gaps of previously made joints when fastening a flat sheet of air ducts with flanges of tire sizes 15 × 15 × 8 mm; 20 × 20 × 8 mm; 30 × 30 × 10; 35 × 35 × 10; identical and equivalent to the claims.

The proposed device can be made in the embodiment for fastening flat sections of three or four sheets with a total thickness of 2.0 mm to 4.5 mm in the general case of its use, in one particular case of its use in mounting, for example, a duct sheet with flanges from tire sizes 15 × 15 × 8 mm; 20 × 20 × 8 mm; 30 × 30 × 10 mm; 35 × 35 × 10 mm. And if necessary, in another special case, for example, when attaching a flat section from 2.0 mm to 4.5 mm thick, a flanging sheet of a L-shaped pipe, an air duct sheet, a liner sheet with a direct stroke of the punches package and an integral matrix, in the third particular case and when fastening parts of flanges from tire sizes 15 × 15 × 8 mm; 20 × 20 × 10 mm; 30 × 30 × 10 mm; 35 × 35 × 10 mm with mounting angles in the forward stroke of the punch package and one-piece matrix, identical and equivalent to the claims.

The proposed device can be performed in the variant in the general case of its use for fastening flat sections of three or four sheets with a total thickness of 2.0 mm to 4.5 mm, in another particular case of its use for fastening flanges from tire sizes 15 × 15 × 8 mm; 20 × 20 × 8 mm; 30 × 30 × 10 mm; 35 × 35 × 10 mm with a duct sheet with a total thickness of 2.0 mm to 4.5 mm. In the third particular case, when attaching a flat section consisting of a flanging sheet for a pipe, a duct sheet, a sheet with a liner with a total thickness of 1.2 mm to 1.4 mm in a straight stroke using a converted pack of punches, a split die and a jumper supported by an integral die . And also in the fourth particular case when attaching flange parts from tires 15 × 15 × 8 mm; 20 × 20 × 8 mm; 30 × 30 × 10 mm; 35 × 35 × 10 mm with mounting angles in the forward direction of the punches pack.

Claims (11)

1. A device for connecting in a bag with a total thickness from 2.0 mm to 4.5 mm three or four sheet metal parts of an angular U- or G-shape with a U-shaped stiffener and a dead-end spring plate, covering tightly or with a gap flat a sheet located parallel or inclined to the spring plate, comprising a monolithic body, a fork, handles, an earring with nuts, a detachable matrix with cutting edges and an integral matrix having two longitudinal grooves with cutting edges and threaded holes in the bottoms of the said grooves, installed a slider in the T-guides of the lower part of the monolithic body with a punch holder having a grooved bottom, in which a floating package of punches is fixed, and a through cross-section with a longitudinal groove is made on one side of the monolithic body to accommodate the above earrings with nuts for installing handles, and on the other hand - two equal in cross section and separated by a jumper grooves for installation in each of the mentioned matrices, the extreme parts of the floating package of punches are made in the form of forming cutting edges pitches of reinstallable inserts, one of which is shorter than the other, having steps and protruding cones, and its middle part is made in the form of a plate with a protrusion extending beyond the cones of said plates of the extreme parts, said matrices being made possible to replace blunt cutting edges with sharp ones . 2. The device according to claim 1, characterized in that when the flat sheet is inclined to the spring plate, the bottom of the punch holder is made oblique, and the plates of the extreme parts of the floating punch package are located in a plane parallel to the plane of the inclined sheet and are offset by 0.85- 0.9 mm. 3. The device according to claim 1, characterized in that it contains an insert in the form of a screw screwed into the groove between the cutting edges of the integral matrix, a conductor containing a plate fixed in a monolithic case with the possibility of its alignment with screws along the height of the through cutout of the case, and a limiter with a groove. 4. The device according to claim 1, characterized in that a transverse groove and two chamfers are made in the housing behind the through cross-section, and one nut is provided on the fork and earring to fix the handles in them in a horizontal position. 5. The device according to claim 1, characterized in that the detachable matrix is made in the form of two plates of the extreme parts with four cutting edges, and the cutting edges of the plates of the extreme parts of the punch package are set outside the steps and cones by 0.2 mm and are located in the same plane . 6. The device according to claim 1, characterized in that the said jumper is made of a thickness of not more than 3.0 mm 7. The method of joining in a bag with a total thickness from 2.0 mm to 4.5 mm three or four sheet metal parts of an angular U- or G-shape with a U-shaped stiffener and a dead-end spring plate, covering a flat sheet tightly or with a gap located parallel or inclined to the spring plate, characterized in that the connection of the parts in the package is carried out by means of the device according to any one of claims 1 to 6, while the parts are placed in the through cross-section of the monolithic body of the device or in the transverse groove under the jumper, the removable or detachable matrix onto the floating punch package and is moved along the longitudinal axis of the housing along the transverse groove, then said sheet parts are joined into the package by a punch by cutting, punching, drawing to form a hollow with a bulge, after which the sheet parts connected into the package are removed from the slot of a detachable or one-piece matrix, then, by breeding the handles all the way, the floating packet of punches is removed from the connection made. 8. The method according to claim 7, characterized in that the U-shaped stiffener of the sheets of an angular U- or G-shape and a dead-end spring plate are located opposite the pack of punches in the transverse groove under the jumper and pressed against it. 9. The method according to claim 7, characterized in that when the flat sheet is inclined to the spring plate, the elongated plate of the extreme parts of the floating punches package is pressed against the oblique bottom and installed in the groove of the puncheon holder above the middle part of the floating punches package, and the shortened one is pressed against the oblique bottom and installed in the groove of the punch holder under the middle part with a displacement of 0.85 - 0.9 mm in the plane of the inclined sheet. 10. The method according to claim 7, characterized in that when connecting in a package of sheet parts angular P- or G-shaped with a U-shaped stiffener in the form of a flange of tires and a mounting bracket with a hole in the threaded hole in the groove of the integral matrix at the level cutting edges place a liner in the form of a screw to limit the punching of the U-shaped stiffener into the hole of the mounting bracket, while the alignment between the package of punches and the hole of the mounting bracket is provided by a conductor, in the groove of which the mounting bracket is located, The mounting bracket is positioned opposite the punches pack, with the handles brought together, the metal of the sheet metal parts is pressed into the mounting bracket hole by a distance equal to the thickness of one tire flange facing the punches pack before pairing with the other tire flange, the handles are brought against each other and one of the two sheet parts mentioned, they are pressed into the hole of the mounting bracket until they mate with another sheet part, the tire flange is rotated 90 ° and the operation is repeated around its perimeter. 11. The method according to claim 7, characterized in that when connecting to the package of three sheet parts in the form of a pipe with a flat section, an air duct and a flat liner, a flat section of the pipe is located opposite the floating pack of punches, and a detachable matrix with cutting edges is started from the inside pipe, while the handles are parallel to the horizontal axis of the device.

Images