Device for weaving nets
(57) Abstract:Use: for the manufacture of wire materials. The inventive device for weaving nets contains a replaceable cartridge with blocks screw knife arranged in a row with a spacing equal to two grid steps, and together with the mechanism of reference coils mounted on the support, coupled with step-by-step mechanism of mixing back and forth to the grid spacing mechanism forming a spiral (caliper). The formation of a fragment of the mesh production in the guide, made in the form of an endless belt, on the outer surfaces of which are in increments of two grid steps, performed a series of guides scallops, located between them are fragments of this line and profiled so that they serve as guides and for spirals, intertwine in a spiral based on these spiral lines. At the end of each row made the stop and guide tight on the pulleys of the shift mechanism of the finished portion of the grid bias is ready a fragment of the mesh in such a position that in its first spiral weaves the last spiral of the newly generated fragment of the mesh. 6 C.p. f-crystals, 17 ill. The invention relates to the production of woven metal mesh, the tx2">A device for weaving metal mesh of spirals having a flattened cross-section , which contains the mechanism of reference coils, the mechanism of formation of the helix, including the knife and the screw, the cutting mechanism of the spiral and the mechanism of step motion, mounted on the frame and technologically interconnected.Moreover, the screw is made with a constant pitch and increasing the diameter of the hole along its axis, and a knife with a variable profile from round from the input end to the flattened at the other end.The disadvantages of this device are, first, the inability of the mesh netting of the coils of circular cross section, and secondly, the inability to weave fine mesh of cables with diameters less than 5 mm Therefore, this device is unsuitable for the manufacture of wire mesh of thin wires with a diameter of 0.12 mm ø 0.4 mm and the diameter of the helix D to the wire diameter D/d 8-10, used for the manufacture of the wire material.In addition, as in the manufacture of mesh on this device consistently intertwined spiral with the spiral, it is not productive enough.It is known as a device for the fences the ZM cutting spiral, guide to intertwine the spiral and the mechanism of the stepper displacement. The knife is designed with a tapered part of the oval cross-section at the inlet end of the wire is gradually turning into a cylindrical portion at the opposite end. The screw is made with a constant pitch with a round hole having a second knife conical and cylindrical portions, and guide cross-section has the shape of a channel, in which small gaps along its inner perimeter is round intertwine spiral and with a slight interference fit on the shelves turn of the spiral contact intertwine. Moreover, the tightness is ensured by appropriate profiling of the end sections channel racks.This device can produce a fine mesh with parameters suitable for the manufacture of the wire material.A disadvantage of this device is its low efficiency, due to the fact that the mesh is made consistent intertwining spirals (spiral after spiral).The aim of the proposed device is to increase productivity woven of fine and coarse metal mesh.This is achieved by Anne mechanism account of coils, the mechanism of formation of spirals, the cutting device spirals, the guide include spirals and step-by-step mechanism of displacement, the mechanism of formation of spirals includes a removable cassette with n blocks screw knife, placed in a number of increments equal to two grid steps. Under the grid here and below refers to the distance between the axes of two adjacent helices, which are in positions convenient for the mutual interweaving. This distance is less than the distance between the axes of two adjacent spirals in a stretched grid, when adjacent spirals entered into direct contact with each other, mounted on a rack, mounted in turn on the support together with the mechanism account of coils, and the caliper is mounted in guides on the frame with the possibility of its displacement along the end of the grid and connected to the actuating element of the mechanism of the stepper displacement, the displacement is adjustable limiters is limited by the step size of the grid (there and back), and the guide include spirals made in the form of a flexible endless belt, glued three layers - the outer metal, the average of the rubber and the inner magnetic rubber on the outer surface of which in the direction of the axes of the spirals made a series aiming the m the cavity between them is part of this line, and profiled so that the scallops form a sector of the nut thread for screwing the spiral and serve as guides for the spirals adjacent to that spiral, and at the end of each series of guides scallops made the ledge to the stop screw spiral.The device has a mechanism of displacement of the fragment of the mesh, the Executive element of which is the guide include spirals, which are put on the pulleys and tensioned tensioning mechanism, the driving pulley mechanism with a disk having a circular slot concentric with the axis of the pulley, the Central angle of which determines the length of the step of moving the grid is mounted on the drive shaft and rigidly pressed against the flange tacks mounted on the pulley inside of the drive shaft has a brake, consisting of a collet clamp securing the shaft, and the controlling cylinder, a drive shaft is located inside the other of the shaft, outside of which a brake, also consisting of a collet clamp securing the shaft, and the controlling cylinder. At the end of the shaft made a flange to which is attached a disc pressed with your fingers within a circular slot of the drive pulley. Both shafts are installed in the terminal connection or lead the same gear so that the tooth of one wheel is a continuation of another tooth, and the output shaft of the reduction gear drive mechanism with vozmozhnostyu offset along the axis of the shaft worn gear, consistently included in engagement with each of the gear wheels and located between the prongs of the fork, shifting the gear position of the new gearing connected with the cylinder, managing engagement and to the free end of the grid of the suspended load, which is located either in an inclined tray or in a freely suspended condition.In addition, to ensure the production of woven metal mesh with spljusnutymi profile of the spiral, at the outlet of the tray device can be mounted rollers with the drive.To simplify manufacturing techniques guide include spirals for the coarse mesh on the outer surface of the guide in the direction of the axes of the spirals on the whole of its width is made triangular scallops, located in increments equal to the grid step, and of such size that they are with a small clearance fit in a space formed by two intersecting cylinders, described around two contacting helices of the grid.To increase the strength of the guide e is Gnanou rubber - of the magnetic wire.To simplify the production technology block screw knife can be made of thin-walled tubes, and part of the knife at the entrance of the wire with one or two sides of the tube is crushed for five to six steps of the spiral in such a way that in each section of this part of the perimeter of the spiral wound wire is less than the perimeter (or equal to) a coil of wire, namatanai on round cylindrical part of the knife (undeformed), located at the exit of the spiral, which gradually becomes deformed section of the knife and auger, made in the form of a sleeve with a helical cutting groove with a constant pitch, folded from a flat strip with beveled edges and a hole in the auger profiled in such a way that the length of the working part of the knife is the minimum value of the clearance between the auger and knife less than half the diameter of the wire.In addition, other variants of embodiment of the proposed device.For example, the mechanism of formation of spirals is in the form of two racks of cassettes with blocks screw knife fixed directly on the frame on both sides of the table for meshing and offset relative to each other on the grid spacing, Clucene drive, alternately, resulting in a rotation of the knives of one or the other of the rack and the mechanism for cutting spirals made in the form of two guillotine shears, placed on both sides of the table.Naturally, in this case, the mechanism step mechanism for the formation of the spiral is not needed.Each hour of the mechanism of formation of the spiral may have a drive and their mechanism of reference coils.Weave mesh of the circular spiral allows you to weave once a fragment of the mesh, and achieved an increase in productivity in comparison with the known solutions.As the blocks screw knife cannot be placed in increments of the grid, it is necessary to place them in increments of two grid steps, and weave a fragment of the mesh in two stages.In this case, the formation of the grid can only happen in the guide matrix.Prior to each stage in the mechanism of formation of the spiral or the guide should be accurately repositioned on the grid spacing (there and back).The proposed design, it is a step-by-step mechanism shift mechanism forming a spiral.Before each shift of the formed spiral must be circumcised,became, located along the helix spiral, due to the small diameter of the spiral wire mesh, as in this case can be performed with sufficient height, providing a safe direction and fixation helices.The guide is made in the form of a flexible endless belts for organization of continuous process manufacturing grid. She is also an Executive element of the mechanism of movement of the finished portion of the grid.In the manufacture of wire mesh displacement finished fragment of the mesh should be made with high accuracy. Therefore, in the design of the shift mechanism of a fragment of the mesh these shifts is limited by the limiter, which each time before the new offset is automatically set to the desired position. Moreover, the provision which establishes the limiter hard coded its previous position (the length of the slot on the master pulley).Moving the same delimiter after each fragment offset grid to a new position determined by the need to offset these fragments to one side.The selection of the geometry of a non-circular cross sections of a knife, you can ensure that when forming the spiral ostatok the latter under the action of residual stresses bending will not be twisted around the axis and the flatness of the grid will increase, ie will improve the quality of the grid.In Fig. 1 shows a device for weaving nets, General view; Fig. 2 - the mechanism of formation of the spiral (front view) with a fragment of the table on which the woven mesh of Fig. 3 - section a-a in Fig. 2; Fig. 4 - section b-B in Fig. 3; Fig. 5 - section b-b of Fig. 3; Fig. 6 - section G-G in Fig. 3; Fig. 7 - section d-D in Fig. 3; Fig. 8 - drive knife mechanism forming a spiral, front view; Fig. 9 is a fragment of the guide bottom view of Fig.10 - section e-E in Fig. 9; Fig. 11 - the mechanism of fragment offset grid,General view; Fig. 12 - section f-F in Fig. 11; Fig. 13 is a view along arrow And Fig. 12; Fig. 14 - tensioner guide to the reception of the shift mechanism of a fragment of the mesh of Fig. 15 - section K-K in Fig. 14, in Fig. 16 - the mechanism of spiral cutting (guillotine), and Fig. 17 is an embodiment of the guide for the coarse grid (section e-E in Fig. 9).Device for weaving nets (see Fig.1) comprises a frame 1, which is equipped with technologically interconnected mechanism 2 reference coils, mechanism 3 forming spirals, the mechanism 4 step motion of the mechanism of formation of spirals (grid step back and forth), the lower 5 and upper 6 stakely guide 8 include spirals and mechanism 9 of the tension guide the cutting device spirals (see Fig.16), the rack 10 with coils 11 with the wire 12.Engine 2 readout coils and mechanism 3 forming spirals mounted on the support plate 13, which is connected to the mechanism 4 step motion of mechanism 3 and can be displaced in the guide rails 14 mounted on the frame.Engine 2 readout coils contains the actuator 15 is connected by a coupling 16 with the gear 17 on the output shaft 18 which is installed brake, made for example in the form of a solenoid, the braking gear of the output shaft when the drive is off 15. At the end of the output shaft 18 is mounted a gear wheel 19 which engages with a flexible endless rail 20 (see Fig. 1 and 8), resulting in a rotation of the knife mechanism 3 forming spirals.Mechanism 3 forming spirals (see Fig. 2) consists of a rack 21 mounted on the support plate 13, on which are fixed the cassette 22 in which a number of increments equal to two grid steps, placed blocks screw knife 23 (Fig.3), pairwise fixed by screws 24 and nuts 25.Accurate installation of the rack 21 on the support plate 13 and a replaceable cartridge 22 on the rack 21 is provided with pins 26 and 27 (Fig. 2). On the rack 21 has multiple pairs of pins 27 to install once the flight tests with continuous helical groove with a constant pitch, equal to the pitch of the helix. The hole in the auger is made round and the length of the profiled so that in any cross section of the minimum value of the clearance between the screw 28 and the knife 29 is less than half the diameter of the wire.For fine mesh made of wire with d=0.12 to 0.4 mm and D/d=8-10, auger technologically convenient to make a strand of flat strips with beveled edges (see Fig.4). In this case, you can provide end-to-end helical grooves with a width of the slits, for example, respectively 0,15-0,45 mmThe knife 29 (see Fig. 4-7) made of tubes and parts at the entrance of the wire has a dent (length 5 and 6 steps of the spiral), gradually turning into a cylindrical portion at the other end of the knife.With the collapse of the cross-section of the tube at the initial part of dents (on the input side of the wire) is made in such a way that arising in the circuit of the spiral residual tensile stress greater residual stresses bending, obtained by forming a spiral.At the end of each knife 29 is pressed toothed wheel 30, is additionally fixed by cerite-top. In turn, at the other end of each roller gear 30 is made of the flange retaining ring, installed in the groove of the roller wheels 30 on the other side of the bearing, is fixed knife 29 against axial displacement.Because gears is unable to be placed in one row, knives 29 are made of different lengths, and the gear wheels 30 are arranged in two rows (see Fig. 1).Endless flexible rail 20 with one hand tight on the gear wheel 19 on the other side - gear 31, mounted on the axis 32 (see Fig. 1) rotating in bearings 33, placed in the rack 21. The rail 20 (see Fig. 8) is pressed against each toothed wheel 30 with the two sides of the skis 34 and 35, mounted on the cassette 22 through the elastic strip 36, with nuts 37 and pins 38, placed in the slots 39 of the skis 34 and 35. This mount provides, firstly, the regulation pressure of the ski to the rail 20 and therefore, the pressing of Reiki the gears 30 and, secondly, the regulation of the tension rail 20 through a mutual displacement of the ski within the slots 39.Gear 30 of the first knife has a cylindrical engaging protrusion located along the axis of a stud (for example, this role could be played by a thin wire attached to a spike) and over the spike (see Fig.8) is the sensor 40 number of formed coils, mounted on the top of the ski 34, so that when the offset of the th sensor can be applied to any sensor, reacting to changes in the gap, such as eddy-current sensor.The initial threading of the wire 12 in block screw knife 23 is performed manually (by winding in a spiral groove with an interference fit), after which the blocks 23 are installed in the cassette 22 and fixed.For the production of the coarse grid auger 28 and the knife 29 may be made of the same design as the prototype.On the input side wire this knife has a groove, which is Packed end of the wire before working on the device.Mechanism 4 step motion mechanism 2 forming spirals (see Fig. 1) consists of a cylinder 31, mounted on the frame 1, the rod 42 of the piston which is rigidly connected to the support plate 13.On the rod 42 motionless strengthened emphasis 43 included with the gap is exactly equal to the grid spacing, adjustable gap between the limiters, made in the form of screws 44 with micrometer thread, wrapped in thread racks 45 fixedly mounted on the frame 1. In adjusted position, the screws 44 are fixed by nuts 46.Guide 8 intertwine spirals made in the form of an endless belt (see Fig. 1,10), glued three layers - an inner layer 47 of magnetic rubber, the middle layer 48 iza may be missing.The layer of magnetic rubber 47, first, provides a good fit of the guide 8 to the plane of the top of table 6, which ensures the free movement of spirals in the direction of the width of the guide 8 and, secondly, it ensures that with proper selection of the tension guide, offset without parasitic slip relative to the pulley mechanism 7 displacement finished fragment of the mesh, which can lead to the inability of the mesh netting.On the outer layer 49 (see Fig. 9, 10) in the direction of the axes of the spirals made a series of guides scallops 50 in increments of two grid steps, arranged in pairs along the helix of the spiral so that the depression is part of this line, and profiled so that the scallops form a sector of the nut thread for screwing spirals 51 (see Fig. 9,10) and serve as guides for cables 52, and at the end of each series of guides scallops 50 made the protrusions 53, limiting progression of spirals 51.Mechanism 7 offset the finished portion of the grid contains (see Fig. 1) actuator 54 is connected by a coupling 55 to the shaft 56 of the gear 57, with brake (Fig. not specified) on the output shaft 58 which is connected by a coupling 59 to the shaft 60 mounted in the bearing 61 in corpulently axial displacement worn gear wheel 65, placed in the groove of the fork 66, fixed to the piston rod 67 of the cylinder piston 60. A gear wheel 65 with cylinder 68 sequentially injected into engagement with the gears 69 and 70 with the same toothed crowns.Gears 69 and 70 mounted on concentric spaced shafts 71 and 72 (see Fig. 12) so that the tooth of one wheel is a continuation of another tooth of the wheel.The shaft 71 is supported by bearings 73, accommodated in the housing 62, and the shaft 72 in the bearings 74, accommodated in the housing 75. The housing 75 is fastened to the frame 1 (see Fig. 1 and 11) and the housing 62 to the housing 75.Inside the shaft 71 posted by brake, consisting of a cylinder 76 electropneumatically inlet and air bleed rigidly mounted on the frame, a split collet 77, rigidly fixed on the body of the cylinder 76, the petals 78 which may with the braking force against the inner surface of the shaft 71, the rod 79 with the piston having at one end a conical portion 80 acting on the petals 78, and the spring 81 mounted on the shaft 79 with a focus in the piston and the bottom gripper 77.On the outside of the shaft 72 also ustanovlen brake, containing the cylinder 82 with solenoids intake and grazing attached to the housing 75. Collet 83, braking the shaft 72 in a compressed Palouse on the collet 83. The rod 85 with emphasis in the cylinder body 82 and the piston 87 is mounted a spring 88.Drive pulley 89 mechanism 7 displacement finished fragment of the mesh together with the disc 90 having an annular slot 91 (see Fig. 13) concentric with the axis of the pulley, the Central angle of which determines the length of the step offset mesh, attached to the shaft 71 (see Fig.12) and still pressed against the flange 92 tacks 93 (see Fig. 13) by means of pins 94 installed on the pulley 89, nuts 95, spring 96 and supports 97 sticking.At the end of the shaft 72 is made flange 98 to which screws are attached disk 99, which pressed the finger 100, which is annular slot 91 of the driving pulley 89.Driven pulley 101 (see Fig.11 and 14) using the nuts 102 and locking washer 103 is attached to the axis 104 installed in the bearing 105 of the rack 106 which is installed in the guide rail 107 (see Fig. 15), mounted on the frame 1 and secured therein by screws 108 and nuts 109.The rack 106 (see Fig.14) screw 110 and a nut 111 is attached mechanism 9 of the tension guide containing dynamometer 112 measuring tension, compression nut 113 to secure the dynamometer to the screws 110 and 114, lead screw 115 made integral whole with a bearing support, the bearing 116 mounted in them the finger 117, in which th 120, which secondline round nut 121.The mechanism of spiral segments (see Fig. 16) is attached to the guide 14 between the rack 21 and table 5. It is made in the form of guillotine shears and consists of the lower knife 122, the upper knife 123, rotating on an axis 124, the fingers 125, pressed into the blades 122 and 123, on which is mounted a spring 126, decompresses the knives of the cylinder 127, which is located under the frame 1 and fixed thereto. The rod 128 of the cylinder 127 is fixed in the groove 129 of the upper knife 123 using the ball joint 130, which from unscrewing secondline pin 131. The length of the groove 129 are selected in such a way that provides the required angle of rotation of the upper knife 123.In the support plate 13 has a groove 132,through which passes the rod 128 with a gap sufficient for the free displacement of the caliper 13.For tensioning the finished grid 133 (see Fig.1) by the end of the grid suspended load 134, which in the beginning of the manufacturing grid is on an inclined tray 135, and then freely suspended.If the mesh is passed through the rolls, cargo 135 just lies on the hanging grid between the tray and rolls.When reconfiguring the device to the new size of the grid are replaced by guide 8 include spirals, di 6 and by means of adjustable stops 44 installed a new step shifting mechanism 3 forming spirals, and (if required) new number of turns in the form of a spiral.Device for weaving nets works as follows. Included in the operation mechanism 2 accounts coils, the transmitting rotation from the actuator 15 through the flexible rack gear (rail 20 and the gear wheel 19,31, 30) to the blades 29 of the mechanism 3 forming a spiral.Wire 12, sativas with coils 11, reeled up on the knives 29 and deformed in a spiral 51, which in the beginning of the knife have a non-circular shape (and therefore can not rotate relative to the knife), and along the knife gradually acquire a round shape.The spiral 51 go with knives 29, rotating and moving along the lower table 5, are threaded on the helical line formed by the scallops guide 50 8 intertwine spirals until it stops in the projections 53.This creates a small pressure of coils to the scallops 50. In the spiral 51 are recorded accurately in the guide 8, is plotted in increments of two grid steps along the generatrix of the guide 8.Further, the actuator 15 to the sensor signal 40 number of formed coils off and de-energization of the windings of the actuator solenoid brake output shaft 18 of the gear 17 is practically mg the La in which the cylinder 127 is supplied the air pressure and the rod 128 creates the desired force on the knife 123, which cuts the spiral 51.After cutting spirals pressure from the cylinder 127 is discharged and the knife 123 spring 126 is in its original position.Further mechanism 4 step motion mechanism 2 forming spirals displaces the caliper 13 to the grid spacing, which is pressure in the cylinder 41 (existing pressure on the other side of the piston while venting) and the piston rod 42 and the support plate 13) is shifted in the desired direction until it stops 43 into the bracket 44 and is held in this position by the pressure in the cylinder 41.Then turned on the engine 2 account turns, restoratives output shaft 18 of the gear 17 and the knives 29 thermoabrasion helix 52, which, coming down with knives and rotating, are woven in a spiral 51, forming a grid. Moreover, scallops 50 serve as guides for these spirals and provide qualitatively the formation of the grid.When shaping coils 52 of the desired length is completed, the sensor 40 off mechanism 2 accounts coils. Then the mechanism for cutting spiral cut spiral 52.And ready a fragment of the mesh ends of the coil 52 (last spiral - helix, which connects new fragment).Then the mechanism 3 formoosnastki and shifts the grid at exactly the specified value in this situation, when the last spiral of the fragment of the mesh (spiral 52) will take place, in which it can be weaved with the first coil 51 of a new fragment of the mesh.Mechanism 7 operates as follows. The air pressure in the cylinder 68, the piston rod 67 (fork 66) introduces the gear 65 engages with the toothed wheel 69 mounted on the shaft 71.Venting air pressure from the cylinder 76 and the spring 81 moves the rod 79 and frees the petals 80 collet 77 and restorative shaft 71. Enables the actuator 54 and simultaneously restoratives output shaft gear 58, which begins to rotate, result in rotation through gears 65 and 69 of the shaft 71 with the drive pulley 89. Is turning the pulley 89 is fully inserted in the finger 100, i.e., within the Central angle of the slot 91.In Vremya this displacement of the finger 100 is rigidly in place as the shaft 72 retarded.As the mechanism 9 previously created such tension guide 8 that when turning the pulley 89 she shifted without parasitic slip on the pulleys 89 and 101, while rotation of the guide pulleys 8 accurately shifted by the specified amount, and scallops 50 will shift on the value of the finished grid 133. Under the influence of cargo 134 grid all the time will be in the tense with the al 71 is retarded, for what purpose is served by air pressure in the cylinder 76. At the same time turns off the actuator 54 and is inhibited by the output shaft of the gearbox 58. Further, the cylinder 68 enters the gear 65 engages with the toothed wheel 70.The shaft 72 restoratives, which is venting air pressure from the cylinder 82 and the spring 88 pushes the rod 85 with collet 83, freeing the shaft. Then enable the actuator 54 and restoratives output shaft gear 58 and the rotation of the shaft 72 to lock the finger 100 in the wall of the slot 91 which provides a new exact offset of the finished portion of the grid.Further, the actuator 54 is turned off, the output shaft of the gearbox 58 is retarded and at the same time retards the shaft 72, which is supplied air pressure in the cylinder 82. The gear wheel 65 is again translated into engagement with the wheel 69 and the mechanism 7 is again ready to offset the new fragment of the mesh.While there is a training mechanism 7, is the production of a new fragment of the mesh and the cycle repeats.During operation of the device, you may need to adjust the tension of the guide 8 intertwine spirals.This freed hour 106 from tightening the screws 108 and screw 115 is created adding to the tension strut 106 is fixed by screws 108 and nuts 109.The proposed device with the appropriate settings actuators can automatically weave as fine mesh, suitable for the manufacture of wire material and other needs, and the coarse grid.Depending on the number of blocks screw knife 23 in the cassette 22 the performance of the proposed device may dozens of times to exceed the performance of the known devices of the same destination (including the prototype) that will reduce the cost of manufacture of the grid and its products. 1. DEVICE FOR WEAVING NETS containing installed downstream on the frame of the mechanism of reference coils, the mechanism of formation of the spiral with a knife and the screw, the cutting device spirals, characterized in that it is provided with a shifting mechanism is ready fragment of the mesh, the guide include spirals, step-by-step mechanism of displacement and mechanism of formation of spirals and the load hanging from the free end of the grid, and the mechanism of formation of spirals includes a removable cassette with n blocks screw-knife, placed in a number of increments equal to two grid steps mounted on the carriage together with the mechanism of reference coils, and caliper set e is connected with the actuating element of the mechanism step-by-step offset, reciprocating displacement is adjustable limiters is limited by the step size of the grid, and the shifting mechanism is ready fragment of the mesh is made in the form of a drive with a gearbox having an output shaft and two bearings, one of which is placed on it driven shaft and put on it a pulley connected to the tensioning mechanism, and in the bearings of the other posted a shaft connected with the output shaft of the reducer is installed with the possibility of displacement along its axis, a gear wheel placed, in turn, into the slots of the plug connected to the cylinder, managing toothed gearing, the bearing shaft with a flange on the end with the installed brake having a collet Chuck for fixing the shaft and managing them with the cylinder, and a drive shaft with a flange on the end located inside the rotor shaft and having individual brake, inside it that contains also the Chuck, the locking shaft and managing them additional cylinder, and the flange of the drive shaft is attached the pulley and the disk with concentric slot, the Central angle of which determines the amount of displacement of the finished slice of the grid and to the flange of the rotor shaft attached disk pressed with a finger at him, razmeshannye gears of the same diameter, moreover, the tooth of one wheel is a continuation of another tooth, and the toothed wheel is mounted with the possibility of successive engagement with each of the additional gears, pulleys worn guide include spirals, which is also an Executive member of the gear shift finished fragment of the mesh, made in the form of a flexible endless belt, glued three layers: outer - metal, medium rubber and the inside is made of magnetic rubber on the outer surface of which in the direction of the axes of the spirals made a series of guides scallops in increments of two grid steps, arranged in pairs along the helix spirals so, the cavity between them is part of this line, and profiled so that the scallops form a sector of the nut thread for screwing spirals and serve as guides for the spirals adjacent to that spiral, and at the end of each series of guides scallops made the bench for the stop screw spiral.2. The device under item 1, characterized in that it has installed at the outlet of the tray device rollers with the drive, the first pair of which in the course of the technological process profiled so that R is on p. 1, characterized in that on the outer surface of the guide in the direction of the axes of the spirals on the whole of its width is made triangular scallops, located in increments equal to the grid step, and of such size that they are with a small clearance fit in a space formed by two intersecting cylinders described without gap around the two contacting helices of the grid.4. The device under item 1, characterized in that the said rubber blocks guide include spirals reinforced: a layer of rubber and wire material made of non-magnetic wire, and a layer of magnetic rubber - magnetic wire.5. The device under item 1, characterized in that the knife is made of thin-walled tubes, and part of the knife on the input side of the wire with one or two sides of the tube is crushed for five to six steps of the spiral so that in each section of this part of the perimeter of the spiral wound wire is less than the perimeter of a coil of wire wound on a cylindrical round part of the knife, located at the exit of the spiral, which gradually becomes deformed plot of a knife or equal to him, and auger, made in the form of a sleeve with a helical cutting groove with a constant pitch, folded from a flat strip with the clearance between the auger and knife less than half the diameter of the wire.6. The device under item 1, characterized in that the mechanism of formation of spirals made in the form of two racks with blocks "auger-knife, fixed directly on the frame on both sides of the table for meshing and offset one with respect to another on the grid spacing, and the mechanism of reference of coils, mounted directly on the frame, provides a means of switching of the actuator, in turn resulting in a rotation of the knives of one or the other of the rack and the mechanism for cutting spirals made in the form of two guillotine shears, placed on both sides of the table.7. The device according to PP.1 - 6, characterized in that each hour of the mechanism of formation of spirals is individually driven by their mechanism of reference coils.
SUBSTANCE: invention is related to protective nets, intended for reinforcement of slope against fall, and to methods of their manufacturing. Net is made with diagonal plaiting and is woven of twisted wire strands bent in the shape of spirals, armature bundles or cords, which comprises two or more wires or twisted wire strands of steel. Method for manufacturing of protective net consists in the fact that twisted wire strand, cord or armature bundle is fed with a certain angle of lift at least to one bending mandrel of device and is bent at a certain length around bending mandrel approximately by 180°, then repeatedly moved along their longitudinal axis to bending mandrel at a certain length, bent accordingly around bending mandrel by 180° until this twisted wire strand, cord or armature bundle does not achieve shape of spiral, besides wire strand bent in the form of spiral, cord or armature bundle are woven together with the second twisted wire strand, cord or armature bundle bent in the form of spiral, and this is repeated until net is made with diagonal plaiting of desired value.
EFFECT: optimal fixation of slope is achieved, as well as damage danger is reduced.
9 cl, 4 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to machine building and may be used for producing braided gauzes. Proposed method comprises forming first unit helices by set of blades to preset length at preset pitch and expending them by expansion mechanism in helix axes to preset pitch defined by claimed relationship. forming second unit helices by second set of blades arranged opposite the first set at opposite side of produced gauze with shift relative to first unit helices through gauze pitch to ensure preset pitch in continuous rotation of helices. Said helices slide from blades to get braided into expanded helices of the first set to make gauze fragment. Length of said helices is selected appropriately. First unit helices are released from expansion mechanism and shifted to open the zone. Second unit helices are cut in said zone to cut finished gauze fragment to be displaced for connection with the next fragment. Gauze next fragment and connection helix are made, for the latter to be braided in the last helix of the next fragment and to the first helix of previous fragment over the entire length of all helices. Cycle is reiterated unless required length of gauze is produced.
EFFECT: production of fine gauzes.
4 cl, 2 dwg