SU650687A1 - Accumulator of wire take-off device - Google Patents

Description

The invention relates to the processing of metals by pressure and, in particular, can be used in workshops for the processing of wire.

A storage device is known that comprises two freely rotating storage drums located between a brake shaft and a common one, and a carrier with a lock fixed between the two and rigidly connected to the shaft. The necessary supply of wire is wound on the drums due to the energy imparted to it by the exhaust device of the thermo-chemical unit or the drawing mill 1.

However, such a device does not ensure the constant tension of the wire in the mode of its accumulation and discharge, which leads to a deterioration in the quality of the finished product. In addition, it is impossible to maintain two unwinders at the same storage device at the same time, and the use of two identical storage devices significantly complicates the design.

It is also known device containing pairs installed on common shafts, provided with clamps, storage drums and drove, rigidly mounted on the shafts between the drums of each pair 2.

In this double-threading device, the main and additional accumulative drums and the carrier mounted between them are designed for each strand of wire. Cumulative drums can be installed in pairs on two rollers supplied with clamps, and the carrier is rigidly fixed on these shafts between the drums of each pair.

The accumulation on the drum of the wire of one thread is combined with the dumping of the accumulated wire on the drum of the other. The wire moves through this device with a high tension (30 kg for side wire with a diameter of 1 mm), which creates conditions for its deformation when the drums and auxiliary rollers run around, for torsion on fillets and the occurrence of residual bends. The quality of the wire is reduced.

The aim of the invention is to eliminate the residual bending and twisting deformations of the wire by reducing its tension at. passing through the device.

This goal is achieved in that it is equipped with a pair of input and a pair of output grooved drums, the accumulative drums being connected to the grooved drums by means of mechanical gears, the drums being made with the ratio Oz D D2 Di,

where DS is the diameter of the input grooved drums;

D is the diameter of the first storage drums;

Da is the diameter of the output grooved drums;

DI is the diameter of the second storage drum at ii.

where1 | - the gear ratio of the mechanical gears connecting the input grooved drums with the first accumulating drums;

12 is the gear ratio of the mechanical gears associated with the first accumulative drums with output grooved drums;

or Oz Da Da DI with ii 1g with output grooved drums.

The mechanical connection between the first accumulator drum of each pair and the output grooved drum is made in the form of a planetary gear.

FIG. 1 shows a kinematic diagram of a storage device; in fig. 2 - kinematic scheme of accumulative drums of one thread; in fig. 3 - unwinders of both threads and storage device, plan; in fig. 4 is the same, view A of FIG. 3

The storage device for the unwinder of the wire contains mounted on the racks freely rotating, ies drums 1-4, grooved drums 5 and 6, interconnected by means of a chain transmission. 7, the hollow shaft 8, the gear wheels 9-11, the grooved drums 12 and 13 connected to each other through a chain transmission 14, the hollow shaft 15, gears 16-18.

On the hollow shaft 8, the drum 19, the chain drive sprocket 7 and the gear wheel 9 are rigidly fixed, and on the shaft 15, the drum 20, the chain gear sprocket 14 and the gear wheel 16.

The drums 21, 22, are mounted for free rotation.

Inside the hollow shaft 8, there is a shaft 23, on which the carrier 24 is rigidly fixed, the flywheel 25 and the drum 6, the shaft 8, the sprocket 26 and the sliding key 27 are loosely mounted. A shaft 28 passes through the hollow shaft 15, on which the carrier 29, the flywheel 30 and the drum 13, the shaft 15, the sprocket 31 and the sliding key 32 are loosely mounted.

The clutch 27 kinematically connects the shaft 23 with an asterisk 26, the clutch 32 — the shaft 28 with an asterisk 31.

Roller 33 is mounted on one end of the carrier 24, and roller 34 is mounted on the other. A freely rotating gear wheel 10 is mounted on the carrier axis 24. The carrier 29 has a roller 35 at one end, and roller 36 at the other. rotation mounted gear wheel 17.

When clutches 27 and 32 are engaged, the carriers 24 and 29 are interconnected by means of chain transmission 37, shaft 38, gear 39, 40, chain transmission 41 with a total gear ratio equal to one.

The rotational movement of the carrier 24 and 29 in different directions is carried out by means of a gear transmission -39, 40.

The gear 39, the double-sided ratchet wheel 42, the brake pulley 43 and the chain sprocket 37 are rigidly secured to the shaft 38. The ratchet wheel 42 is fitted with latches 44 and 45, which prevent it from rotating in both directions. The ratchet wheel 42 together with the latch 44 forms the shaft lock 23, and together with the latch 45 a shaft lock 28.

The drums 19 and 21 are made in two stages, with the main stages 46 and 47 having a larger diameter and length of the working surface than the auxiliary stages 48 and 49, respectively. The drums 20 and 22 are made similarly.

To transfer the wire from the auxiliary stage 48 of the drum 19 to the main stage 47 of the drum 21, roller 33 serves. To transfer the wire with. auxiliary stage of the drum 20 to the main stage of the drum 22, from the main stage 46 of the drum 19 to the auxiliary level 48, from the main stage of the drum 20 to the auxiliary of the same drum, from the main stage 47 of the drum 21 to the auxiliary 49, from the main stage of the drum 22 to the auxiliary the same drum serve rollers 35, 34, 36, 50 and 51, respectively.

Grooved drum 5 is rigidly connected with an asterisk of a chain of transmission 7, grooved drum 12 is rigidly connected with an asterisk of a chain transmission 14.

The gears 9, 11, 16 and 18 are made with the same number of teeth. The parameters of drums 5, 6, 12, 13, 19, 20, 21 and 22 are related as follows. If D is the diameter of the drums 19 and 20 on the fillet, DI is the diameter of the drums 21 and 22 on the fillet. Da is the diameter of the working surface of grooved drums 6 and 13, DS is the diameter of the working surface of grooved drums 5 and 12, then

(one)

(2) D Dv

(3) DS D (when the ratio of the whole gear 7, 9, 10, 11 and 14, 16, 17, 18, equal to one). The purpose of the invention is achieved if the linear speed of movement of the working surface of each previous drum in the direction of movement of the wire is greater than the speed of each subsequent drum. In accordance with another constructive solution of the device, with equal diameters of the drums 5, 6, 12, 13, 19, 20 and 22, this situation is achieved when the gear ratios of the chain drive 7 and the chain gear 14 are greater than the gear ratios of gear train 9, 10, 11 and gears 16, 17, 18 respectively. Wire unwinders contain gland 52, 53 and brake 54, 55 headstocks, which serve to create tension on the wire during unwinding, as well as to prevent the coil from running out in the event of its uneven rotation. Between the heads 52, 54 and 53, 55 coils 56, 57 are installed for the wire leading to the thermo-unit pull-out device or to the drawing mill. In front of the accumulator there are clips that serve to stop the thread (not shown in the figures). The device works as follows. Refueling mode. When refilling the first yarn (see Figs. 1, 2, 3, 4), the wire 58 is led from the coil 56 to unwind through a clip to the drums 5 and 1, where it is spiraled into each groove, a total of 8-10 turns. The wire is then fed to the main stage 46 of the drum 19, the roller 34, the auxiliary stage 48 of the drum 19 (where 2-4 turns are wound) and laid on the roller 33 of the carrier 24. From the roller 33 the wire is led to the main stage 47 of the drum 21, through the roller 50 - to the auxiliary stage 49 (where 2-4 turns are wound) and then placed in the grooves of the drums 3 and 6. From the drum 3, the wire is led to the exhaust device. The accumulation of the necessary wire stock is carried out on the main stages 46 and 47 of the reels 19 and 21, respectively, by rotating the carrier 24 using the flywheel 25. The unwind brake is disconnected, the clamp is decompressed and the sprocket 26 is disconnected from the shaft 23 (coupling 27 is off). During rotation of the carrier 24, the drums 3, 6, 21 are stopped, while rotating: the shaft 8 (by means of a gear 11, 10, 9, which when the gear 11 is stopped is planetary), and the drum 19, and also the drum 5 (by chain transfer 7), pulling the wire out of the unwinder. The drum 1 is rotated by the movement of the wire. Since the thread tension is loosened, the rotation of the carrier 24 occurs easily. The wire is evenly placed on the main stages 46 and 47 of the drums 19 and 21. Upon completion of the accumulation, the sprocket 26 is connected to the shaft 23 by means of the coupling 27, the unwinder brake and the brake tongue 43 are activated, the ratchet wheel 42 is held still by means of latches 44 and 45, after which the carrier 24 and 29 cannot rotate. In a similar way, the second thread is refilled on another part of the accumulator, however, there is no accumulation of wire on the drums. At their main stages only 4-6 turns of wire are laid. Thus, at the end of the refueling, the wire stock is accumulated on one thread and absent on the other. You can first thread the second strand and accumulate the wire, and then thread the first strand without producing any accumulation. Work mode. When the exhaust devices of the heat treatment units or the coating are turned on (after completion of the charging), the unwinding goes from the coils 56 and 57. The wire passes through the device without accumulating and without losing the available stock, because the carrier is held still by the brake 43 and also by means of latches 44 and 45. The drums 3, 6, 21, 19, 5, and 1 are driven by the first thread of the moving wire, and the drums 4, 13, 22, 20, 12, and 2 by the movement of the second wire. The required tension of the wire coming out of the storage ring is provided by braking the coils using brake heads 54 and 55. When the wire passes through the storage drive, the tension that it had at the entrance is divided into two power flows. The first of them (90-98% of the total tension force) passes from the drum 6, through a gear train 9, 10, 11, shaft 8 and chain gear 7 to the drum 5. Thus, the tension of the wire applied to the drum 6, through the mechanical part of the accumulator, the drum 5, which draws the wire from the coil, rotates. The second power flow (10-2% of the total tension force) is transmitted along the wire from the drum 5 to the drum 6. Without taking into account the efficiency of the force in the wire at the exit from the storage ring and at the entrance to it, the same. The wire passes through the drive as follows. The linear speed of the working surface of the grooved drum 5 with a diameter of DS is greater than the linear speed of the drum fillets 19 with a diameter of D by 1-2%.

In the section of the drum 19 having a diameter D, the wire goes without skidding due to (several turns of it). Constantly protruding between the drum 5 and the section 19 of the drum 19 with a diameter D, the loop is selected due to the wire sliding in the grooved drums 5 and 1 towards the unwinding Tension; the wire branch emerging from the drum 5 is controlled by the number of turns on the brook drum 5 (for a bead wire with a diameter of 1 mm, it is set within -2 kg).

The linear speeds of the working surfaces of the drums 6 and 19 also do not coincide by 1-2% due to the difference in their diameters. When the wire passes from the drum 19 to the drum 6, a loop occurs due to the fact that more wire is output from the drum 19 and there is no skipping on it. This loop is selected when the wire slides along the grooved surface of the reels 6 and 3 towards the exhaust device.

The force in the wire branch, running off from the self-level 48 of the drum 19, is equal to the force in the branch that hits the main level 47 of the drum 21, in the branch that runs away from the auxiliary level 49 of this drum, and in the branch that runs on the drum 6. The last force (1-2 kg of the bead wire with a diameter of 1 mm) is set by winding the appropriate number of turns on the drum 6.

A force in the branch moving onto the main stage (. Kg) turns the wire along the drum, because the force in the branch escaping from the main stage is small (, 1 kg for bead wire 1 mm in diameter). Its value is set by winding on an auxiliary step of the appropriate number of turns and is determined by the turn stiffness.

Due to the difference in diameters between the steps 46, 48 and 47, 49, the loops are chosen due to the slip (within 1-2%) of the wire on the auxiliary steps.

In the wire branch leaving the drum 6, the first and second power fluxes are summed up, and the tension on the wire as it enters and leaves the storage ring becomes equal.

The twisting of the wire on the fillets of the drums and the occurrence of permanent deformation during bending on the auxiliary rollers during its passage through the drive is prevented by creating a small tension, and when entering and leaving the drive by using grooved drums, 5, b, 3, in each groove of which one turn of wire is laid.

With simultaneous pulling through the second thread accumulator, similar processes occur.

The mode of dumping the accumulated wire from the drums of the first thread and accumulating it on the drums of the second thread.

To replace the first wheel located in the first thread, the spool 56 retracts the latch 45, clamp the wire with a clamp located in front of the accumulator, and release the brake 43. The spool 56 and the drums 5, 1 and 19 stop. The speed of the drums 21, 6 and 3 remains unchanged. The rotation, slowed down by the brake headstock 55 of the coil 57, of the drums 12 and 20, is carried out by the force of the first thread coming out of the wire accumulator. From the drum 6, the rotation is transmitted through the gears 11, 10, 9 to the carrier 24 (when the gear 9 is stationary, the wheel 10 rolls around it). The carrier 24, in turn, rotates the carrier 29 through the shaft 23, the chain transmission 37, the shaft 38, the gear transmission 39, 40, the chain transmission 4 and the shaft 28. The carrier 29 attaches additional rotation to the drum 12 through the fifth gear 16, 17, 18 , shaft 15, chain transmission 14. Wheel 17, running in opposite directions around wheel 18, rapidly rotates wheel 16.

When rotating, the carrier 24 removes the coils from the drums 19 and 21, discharging the accumulated wire to feed the first thread, and the carrier 29 accumulates the second thread on the drums 20 and 22, simultaneously outputting the second wire to the exhaust device at a constant speed. 5 Accumulated by the carrier 29 on the reels 20 and 22, the wire is pulled from the unwinder by the drum 12.

When operating in this mode, the cutter is replaced and the wire ends are welded. The wires of the first and second threads exit the accumulator at a constant speed, and the forces in the branches entering into the accumulator and in the branches leaving it from it remain unchanged.

The process of dividing the force in the thread entering the accumulator into two force flows proceeds in a similar way to the operating mode, however the main force flow (90-98 / o from the tension of the wire when entering the accumulator) passes through the mechanical part of the accumulator differently: a gear wheel 9 fixedly held through the shaft 8, the chain transmission 7, the drum 5, the rotation of which is stopped by the wire held (by means of a clamp located in front of the drive). The drum 6, rotating, drives the carrier 24 through the gears W and 11, the wheel 10 rolling on the fixed wheel 9. The carrier 24 transmits the torque to the carrier 29 through the shaft 23, the chain transmission 37, the shaft 38, the gear 39, 40, chain transfer 41. The rotational speed of the carrier 29 is transmitted in this manner and is summed with the rotational speed of the drum 20. The latter is simultaneously driven by the drum 13 of the second thread. The drum 20, rotating at a total speed, through chain transmission 4, increases the speed of rotation of the drum 12, pulling ripOBOvioKy from the unwinder.

The gears 9, 10, 11 and 16, i7, 18 form a differential gear, in which the wheels 9, 11, 16 and 18 have the same number of teeth.

When the accumulation of the accumulation of wire of the first thread is rejected, the drum 19 remains stationary, and the carrier 24 rotating from the drum 6 at each turn removes a coil of wire from the drums 19 and 21. Since () and D2 is DI (2), 2Ds. D + DI (4). Such a ratio of the diameters of the drums creates a relaxed portion of the wire in the branches of the roller 33 of the carrier. The resulting loop in the branches of the carrier is selected by sliding the wire in the grooved drums 6 and 3.

With simultaneous pulling through the accumulator of the wire of the second thread and accumulating it on the drums 20 and 22, the drums 2, 12, 20 and the carrier 29 rotate with increased speed. At each turn of the carrier 29, one turn of wire is laid on the drums 20 and 22. On the reel 12, there is an overlap of wire sliding along it and over the reel 2 towards the unwinder. Clogging and wire breakage when laying turns on drums 20 and 22 is prevented, based on the following ratio of drum diameters: 2D D-fDi (5). In this case, the carrier pulls the wire more than it puts on the drums 20 and 22, and the loop is chosen by sliding the wire in the drums 13 and 4.

After replacing the coil or roll on the first thread and welding the ends of the wire, at the same time, the clamp is smoothly released and the brake latch 43 is actuated, and after stopping the carrier, the latch 45 is released. Next, the winding is carried out in the operating mode, and this happens. the accumulated stock of wire is only on the second thread.

The mode of dumping the accumulated wire from the drums of the second thread and its accumulation on the drums of the first thread.

For a change, the coils 57 remove the latch 44, stop the wire with a clamp located in front of the accumulator, and release the brake jaw 43. The coil 57, the drums 2, 12 and 20 stop. The drums 22, 13 and 4 continue to rotate at a constant speed. The coil 56, which is slowed down by the trading grandmother 54, the drums 5 and 19 receive an additional rotational impulse due to the force of the wire coming out of the second thread accumulator.

Damaging is transmitted from the drum 13 through the gears 18, 17, 16 to the carrier 29 (with the stationary toothed wheel 16, the wheel 17 rolls around it). The carrier 29 rotates the carrier 24 through the shaft 28, the chain transmission 41, the gear transmission 40, 39, the shaft 38, the chain transmission 37 and the shaft 23. The carrier 24 provides additional rotation to the drum 5 through the gear transmission 9, 10, 11, the shaft 8, the chain transmission 7. Wheel 10, rolling in opposite direction on the wheel .11, rapidly rotates the wheel 9. When rotating, the carrier 29 removes the turns from the drums 20 and 22, supplying the second thread with wire. Drove 24 spinning produces accumulation

in the first thread on the drums 9 and 21 with simultaneous feeding at a constant speed of the wire from the first thread to power the suction device. Going to the accumulation of the wire, laid by the planet carrier 24 on the drums 19 and 21, is pulled out from the unwinder by the drum 5.

When operating in this mode,

Changing the spool and welding the ends of the wire.

During the dump accumulated on the drum

The first thread of the wire 11 is accumulated on the second, and the speeds of exit from the accumulator of the first and second threads are constant, and the forces in the branches x entering and leaving the branch X remain unchanged.

After replacing the coil or coil of the second thread and welding its ends, the wire is smoothly released with a clamp and at the same time activates the brake pulley 43. After stopping, the carrier releases the latch 44.

Then, the razmotny process proceeds in the operating mode, and the accumulated wire is stored only on the first thread drum.

Claims (2)

The separation of the tension force., With which 5 the wire enters the accumulator, into various sized power flows summed up at the output of the accumulator, distinguishes the proposed double-thread accumulator from the known ones. B. Thanks to this factor, continuous unwinding of the wire without its twisting on the drums of the drums and residual deformation after bending on the auxiliary rollers and, therefore, improving the quality of the wire, especially its special grades (bead 5 and stringed concrete). Conditions are maintained for the normal unwinding process and the fulfillment of technological requirements when pulling the wire through thermal processing units or a drawing mill. An increase in the yield of high-quality wire will make it possible to obtain an economic effect from the use of one unwinding unit equipped with the proposed storage device in the amount of 30,500 rubles per year. Claim I. Cumulative device for unwinding wire, containing pairs installed on common shafts with clamps accumulative drums and drove, rigidly mounted on the shafts between the first and second drums of each pair, characterized in that, in order to eliminate residual bending deformation and torsion the wire by reducing its tension when passing through the device, it is equipped with a pair of input and a pair of output grooved drums, the accumulative drums are connected with the grooved drums Mechanism of mechanical gears, in this case the drums are made with the ratio of the diameters Dj D Da Dt, where Oz is the diameter of the input grooved drums; D is the diameter of the first storage drums; DS is the diameter of the output grooved drums; DI is the diameter of the second storage drum at 11–12, where h is the gear ratio of the mechanical gears, coupling (their input grooved drums with the first storage drums, 1a is the gear ratio of the mechanical gears connecting the storage drums to output grooved drums, or DJ D Od Di, with it iz with output grooved drums. 2. The device according to claim 1, characterized in that the mechanical connection between the first accumulation drum of each pair and the output grooved drum is made in the form of a planetary gear Aci. Sources of information received into consideration 1.Avtorskoe examination certificate № 259037, cl. B 21 C 47/00, 1970. 2. Certificate of author number 422495, cl. B 21 C 47/20, 1974. -TTJ-ff Vui.r " l “If g four 47 Lt 2S 0 ; :  I 50 four Chig.g Visa SB