RU1787080C - Apparatus for tinning pipes by pouring - Google Patents

Abstract

Usage: tin plating used in engineering, for example, when tinning tubes of radiators of vehicles. SUMMARY OF THE INVENTION: the device is equipped with a tube feeding mechanism, a control system and a shielding tray moving mechanism made in the form of an electromagnet with a core and a rod spring-loaded relative to the housing, the rod being connected to the shielding tray. The tube feeding mechanism comprises guides, a n-cylinder and rolls, a dog and a flag mounted on the rod, and mounted to move along the guide. The control system includes an electric circuit with a switch for controlling the pneumatic cylinder and the screen tray moving mechanism, a tube moving control unit containing a power circuit, a toggle switch, sensors located along the guide along the tubes moving and connected to the power supply circuit of the tube moving control unit, relays connected with sensors and with the corresponding power supply circuit, two additional relays, in which one of the contacts is connected to the power supply circuit and the other is connected to the toggle switch and to the contact E relays both pairs, wherein one terminal of the contact pairs is connected to the power circuit. 2 s.p. f-ly, 7 ill. W Ј

Description

The invention relates to soldering, in particular to tinning devices, and can be used in mechanical engineering, for example, in tinning of vehicle radiator tubes.

A device is known for manufacturing a tinned tube comprising a tape feed unit with guide frames, a tube forming machine, a fluxing unit, a tub for pudding the tube from the outer surface and a weld with devices for blowing excess solder air and for cooling the tube with water, automatic tube cutter.

The closest in technical essence and the achieved result is a device for tinning by pouring of radiator tubes, comprising a mechanism for moving radiator tubes, a solder melt bath, a pump with a pressure pipe, a supply tank with a bottom and an opening for feeding solder, a tin chamber with a screening tray .

The disadvantages of the known device include the fact that due to the lack of a sword

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with

The mechanism of movement of the radiator tubes, the supply of tubes to the tinning chamber can only be done manually, which affects the quality of the tinning, because the speed of tinning the worker has to adjust visually. Labor productivity is low, because continuous tinning requires at least two workers, one of which is engaged in tinning, and the second prepares and feeds the tubes.

Due to the lack of visibility of the position of the tube in the tinning chamber, the end of tinning or a break in tinning, it is possible to shorten the last tube or, on the contrary, partially tin the tube by which the last tube is pushed, which leads to overuse of the solder and rejection of the tubes.

The aim of the invention is to increase labor productivity.

Fig. 1 is a perspective view of a device for tinning tubes; figure 2 is a view of figure 1; in Fig.Z - roll mechanism, section; figure 4 is the same side view; see FIG. 5 — fluxing unit, section; Fig.6 is a node tinning tubes; Fig.7 is a schematic diagram of a system of automation of tinning tubes.

A device for tinning by pouring tubes includes a magazine store 1, where tubes 2 are loaded, a guide device 3. Next, along the tube, there is a roller mechanism 4 with an individual drive (not shown in the figures). All this is mounted on table 5. On the table 5, a tube feeding mechanism is mounted, which includes a pneumatic cylinder 6 with a rod 7 / A fluxing unit 8 of tubes 2 is placed on the same axis as the guiding device 3 and the roller mechanism A, the input of which is fixed to the table 5, and the output is connected to a tin box 9, which is mounted on a stand 10,

The magazine store 1 is made of two U-shaped sidewalls 11 and 12, connected at the top by a horizontal bar 13, and guides 14 and 15 are welded from above and below at the bottom, which are made of corners and do not allow tubes 2 to fall out of the store and guide them along the axis of movement of the tubes. The guides 14 and 15 included in the tube feeding mechanism, together with the sidewalls 11 and 1.2, form a guiding device 3 along a smooth curve, starting from the guides 14, 15 from a horizontal position and ending with a vertical one, which with a certain minimum number of tubes in the store-store provides vertical position of the major axis (with toril) of the tube. Store-drive is paired to fake feedback

. 16, which in turn is mounted on the table 5.

The pneumatic cylinder 6, which is included in the tube feeding mechanism, mounted on a stand 17, has at its rod end 7. a dog 18 and a flag 19 made of steel plates worn on the rod 7 and secured with a nut 20. The dog 18 is made of spring steel and has a length

0 sufficient for gripping the tube located in the guide device 3, The length and rigidity of the dog plate are selected from the condition of feeding the tube into the roller mechanism 4 and the possibility of the dog deviating

5 when rod 7 returns to its new grip position. The plate of the flag 19 is deployed in its peripheral part parallel to the movement of the rod.

An electric air distributor 21 is mounted on table 5 (P-RE2 (16) is used in the installation, which is connected by pipelines 2-2, 23 to pneumatic cylinder 6 (the entire compressed air system is not shown in the drawings). 5 also

5, four sensors are installed (slot transducers PISCH-6-1 TU-25-0,2 550114-81 are used in the installation). The first sensor 24 is installed in front of the roller mechanism 4 so that

0 the tube supplied to the roller mechanism passed through the sensor slit. The second sensor 25 is installed so that when the rod is pulled all the way to the cylinder 6, the flag 19 enters the sensor slit.

5 The third sensor 26 is installed so that when the rod .-. 7 of the pneumatic cylinder 6 is extended, the dog 18 is ready to feed the tube, and the flag 19 enters the slot of the sensor 26.

0 The fourth sensor 27 is installed between the sensors 25 and 26 so that the flag 19 during the movement of the rod 7 passed through the slot of the sensor. The axis of the fourth sensor 27 is set from the axis of the hole for

5 supply of solder at a distance L I -p + a, I is the length of the tube to be tinned, equal to the distance between the inner surfaces of the U-shaped sides of the drive;

P. - the number of tubes between the fourth

0 sensor and axis of the solder hole; .

a - the length of the unattended section from each end of the tube is 10-15 mm. In the manufactured device, p 4, and 10 mm.

5 The axis of the sensor 25 is removed from the axis of the sensor 27 by a distance of 2a to 20 mm. The roll mechanism 4 has two rolls, the lower 28 and the upper 29, located respectively on the axis 30 and 31. The axis of the rolls are placed in the racks 32 and 33, which are mounted on the table 5

bolts (not shown). Each roll 28 and 29 has two surfaces located at an angle to one another and forming a cavity. A notch is made on these surfaces. The holes in the uprights 32 and 33 under the axis 31 of the upper roll 29 are made oval so that the axis 31 can move up and down, which makes it possible to press the tube 29 through its own mass to the roll 28. The rolls 28 and 29 are driven into rotation using its own electric drive (not shown in Fig.), and the speed of their rotation is selected from the conditions of high-quality tinning.

The fluxing unit 8 is made in the form of a rectangular tube 34, inside of which there are horizontal frames 35 and vertical rods 36, which allow the tube to pass through the chamber when its major axis is in a vertical position. At the top, in its middle part, there is a nozzle 37 for supplying a gas fluxing medium, and at the bottom of the pipe there is a nozzle 38 for discharging the spent gas fluxing medium. On the roll mechanism side, the tube of the assembly 8 is covered by a plate (not shown) in which there is an opening for passage of the tube. At the other end, a flange 39 is welded to the fluxing unit 8, by which the unit 8 is attached to the tinning unit 9.

The tinning unit 9 is a closed container, at the bottom of which there is a molten bath of solder 40, in which a pump 41 is mounted, which supplies solder to the consumable tank 42 with a hole 43 for supplying solder, through which the tubes are doused with solder. A shield is installed at the bottom of the hole 43. tray 44 connected to the rod 45. At the end of the rod 45, the core 46 of the EM-1 electromagnet EM-1 is fixed. The rod 45 is spring-loaded relative to the housing by a compression spring 48, which, when the electromagnet is de-energized, removes the solder flowing from the hole 43 with the help of the shielding tray 44 from the zone of passage of the tube, and when power is supplied to the electromagnet, the shielding tray 44 is removed and the solder from the hole 43 is poured into the zone of passage of the tube. For the passage of the tube in the housing of the tinplate assembly 9 there is an inlet. 49 and an outlet (not shown in Fig.).

To ensure the operation of the automatic tube tinning system, there is a control system that includes an electric circuit for controlling the pneumatic cylinder and the screen tray movement mechanism and the tube movement control unit. The first is connected to

electric line voltage of 220 V. and the unit is powered by a voltage of 24 V. The control unit for the movement of tubes includes sensors 24, 25, 26, 27, one terminal 5 of which is connected to one bus circuit 24 V, and the second terminal through the relay coil P1 , P2, PZ, P4, respectively, to the second bus of this circuit. In the same. circuit in parallel connected windings of two additional

0 relays P5 and RB. In series with the coil of relay 5, a closing contact pair K2 of relay P2 is connected, and parallel to contact pair K2, a disconnecting contact pair of KZ short-circuit of relay PZ and a closing contact5 of pair K5 of relay P5 are connected. In series with relay RB, a closing contact pair K2 of relay P2 and a toggle switch T2 (tinning automation) are connected. Parallel to the contact pair K2 and the T2 toggle switch are connected

0 NC contact pair K4 of relay F4 and NC contact pair KB of relay RB. In parallel to the contact pair K4 of the relay P4, a closing contact pair K5 of the relay P5 is connected.

5 Three electromagnets are connected in parallel to the electric circuit for controlling the pneumatic cylinder and the mechanism for moving the screening tray: EM-1, screening control electromagnet

0 by a tray, and two electromagnets EM-2, EM-3 of an electro-pneumatic distributor 21. EM-2 - an electromagnet for controlling the air supply into the cavity of the pneumatic cylinder 6 to extend the rod 7. EM-3 - an electromagnet for controlling the supply of air into the cavity of the pneumatic cylinder 6 to retract the rod 7. In series with the winding of the electromagnet EM-1, a closing contact pair KB of the relay RB is connected, in series with

With the EM-3 electromagnet winding, a disconnecting contact pair K1 of relay P1 and a closing contact pair KZ of relay RZ are connected. A circuit breaker T1 is installed in the power supply circuit of the electromagnets.

5 The device operates as follows ..

In the starting position, the store is neko. the hopper 1 is filled with tubes 2. and in the guide device 3 there is a tube.

0 The piston rod 7 of the pneumatic cylinder 6 is extended and the pawl 18 is engaged with the tube 2. The flag 19 is located in the slit of the sensor 26. The drive of the roller mechanism 4 is turned on and the rollers 28 and 29 are rotated. In gas / ie flux 5 or 8 there is a gas fluxing medium. In the site of the tin pool 9, the solder is molten, the installation is ready for operation.

The shielding tray 44 under the action of the spring 48 is under the hole 43. and the solder does not fall into the passage zone

tube. When turning on the switches T1, tk. in the initial position, the relay coil of the relay relay is energized, a short-circuit contact pair is closed in the EM-3 electromagnet circuit, which moves the valve of the solenoid valve (EPR) 21, and air from the pneumatic network enters the right cavity of the pneumatic cylinder 6. The rod 7 will be retracted. The tube 2 with the help of the dog 18 will move forward into the roller mechanism 4 and with the help of the rolls 28, 29 it will be fed into the fluxing unit 8 and then to the tinning unit 9. After the flag 19 is released from the sensor slot 26, the relay coil of the relay relay is de-energized and the contact pair A short circuit in the EM-3 electromagnet circuit will open and the winding of the EM-3 electromagnet will be de-energized. But air will enter the right cavity of the pneumatic cylinder 6, because spool EPR 21 remains in the same position. If the T2 toggle switch is not turned on, the EM-1 electromagnet will always be de-energized and no solder will be supplied to the tube. When the T2 toggle switch is on, when the rod 7 of the pneumatic cylinder 6 takes the leftmost position and the flag 19 enters the sensor slot 25, a voltage is applied to the coil of relay P2 and contact pair K2 closes. Contact pair K2 in the electromagnetic circuit EM-2 is closed. The contact pair K2 is closed in the winding circuit of relay P5 and the winding will be energized. Contact pair K5 is closed in the winding circuit of relay P5 itself and in the winding circuit of relay P6, The windings of relay P5 and relay P6 will be blocked. The contact pair KB is closed in the EM-1 electromagnet circuit, the shielding tray is moved away, and the solder from the hole 9 will be poured into the tube passage zone. If there is a tube there, tinning occurs. If a tube passes through the slit of the sensor 24 in front of the roller mechanism, then the coil of relay P1 is energized, and the opening contact pair K1 will be opened. The EM-3 electromagnet chain will not be ready to turn on until the tube exits the sensor gap 24. When the contact pair K2 is closed in the EM-2 electromagnet circuit, the EPR spool will shift and air will enter the left cavity of cylinder 6, air will flow into the right cavity will be shut off and it will communicate with the atmosphere.

The rod 7 will extend beyond the next tube to its original position. After the flag 19 leaves the slot 25 of the sensor 25, the coil of relay P2 is de-energized, contact pair K2 in the EM-2 electromagnet circuit is opened, but air will continue to flow into the left cavity of the pneumatic cylinder 6, because the EPR 21 spool will remain in its former position, the relay coil Рb remains energized, although the contact pair K2 in its circuit will open, but the relay coil P5 is blocked by the contact pairs КЗ and

K5. Contact pair K2 will open in the winding circuit of relay P6, but the winding will remain energized because the circuit is blocked by contact pairs K4, K5. Kb When passing the flag 19 through the slit of the sensor 27

0 voltage is applied to the relay coil P4, and contact pair K4 in the relay coil circuit P6 is opened, but relay coil P6 will remain energized, because it remains blocked by contact pairs K5 and Kb.

5 The electromagnet EM-1 of the shielding tray remains energized and the solder flows into the passage zone of the tube.

When the stock reaches the extreme right position, flag 19 will enter the slot

0 of the sensor 26, and voltage will be applied to the relay coil of the relay. The contact pair KZ in the winding circuit of relay P5 is opened and it is de-energized. The contact pair K5 in the circuit of the relay coil P6 opens, but the relay coil P6

5 will remain energized because the circuit is blocked by contact pairs K4 and Kb. The short-circuit contact pair in the EM-3 electromagnet circuit is closed. If the tube is still in the slit of the sensor 24, then the contact pair

0 K1 in the EM-3 electromagnet circuit will be open, and there will be no voltage on the winding of the EM-3 electromagnet, the rod 7 will remain in the extreme right position. The automation system will wait for

5, the tube leaves the slot of the sensor 24. After the tube leaves the slot of the sensor 24 into the guide 3 under the action of the mass of the packet of tubes, the next tube enters, the relay coil P1 is de-energized, and closes

0 contact pair K1 and the EM-3 electromagnet will be energized, the EPR 21 spool will move, and air will enter the right cavity of the pneumatic cylinder 6. The rod 7 with the paw 18 will move the tube c.

5 into the greedy pitch. A new cycle begins. When the flag 19 enters the gap of the sensor 27, the voltage is applied to the coil of relay P4 and the contact pair K4 in the circuit of the coil of relay P6 is opened. The relay coil P6 is de-energized,

0 and the contact pair KB in the circuit of the electromagnet EM-1 will open and de-energize the winding of the electromagnet EM-1. Under the action of the spring 48, the shield tray 44 extends and deflects the solder stream out of the zone

5 tube movements. At this moment, the end of the tinned tube has not yet reached the axis of the hole 43 by 10-15 mm. After the flag 19 exits from the slit of the sensor 27, the relay coil is de-energized. and contact pair K4 in the winding circuit of relay P6 is closed, but the voltage

not fed to the winding, as the KB contact pair is open, the EM-1 electromagnet remains de-energized, no solder enters the tube tin zone. After the rod 7 reaches the leftmost position, the flag 19 will enter the slot of the sensor 25, and the coil of relay P2 will be energized. Contact pairs K2 are closed in the EM-2 electromagnet circuit, in the relay winding circuit P5 and the relay winding circuit P6, The relay windings P5 and P6 will be energized. The contact pair K5 is closed in the winding circuit of the relay P5 and, together with the closed contact pair KZ, will block the contact pair K2. Contact pair K5 is closed in relay circuit P6 and blocks contact pair K4. The KB contact pair in the EM-1 electromagnet circuit is closed, and the electromagnet withdraws the shielding tray from under the solder stream. Tinning of the new tube will begin. At this point, the front edge of the new tube will be in front of the axis of the hole 43 at a distance of 10-15 mm. Next, the cycle repeats.

.If it is necessary to turn off the tinning automatics (toggle switch T2), the tube and tinning cycle will continue until the valve 19 of the rod 7, having returned from the extreme right position, enters the sensor gap 27. At this moment, the coil of relay P5 is de-energized. Contact pairs K5, K2 and tumbler T2 are open. A voltage is applied to the coil of relay P4, contact pair K4 in the winding circuit of relay P6 is opened, and the winding circuit of relay P6 is de-energized. The KB contact pair in the EM-1 electromagnet circuit is open, and the shielding tray 44 will block the supply of solder to the tube passage zone. At this moment, the axis of the hole 43 will be ahead of the tube end at a distance of 10-15 mm, i.e. the handset will be fully serviced. No solder will be supplied to the next tube, as when the T2 toggle switch is off, the voltage on the winding of relay P6 will not be applied, and the contact pair KB of relay P6 will be open, and therefore

no solder will be fed into the tin zone of the tube.

Claims (3)

SUMMARY OF THE INVENTION 1. An apparatus for tin-plating with a tin tube, comprising a tin-plating assembly including a consumable container in the bottom of which a hole for supplying solder, a window for supplying tubes, a shielding tray located between the hole for feeding solder and the window for feeding tubes, about Including that, in order to increase productivity, it is equipped with a tube feeding mechanism, a control system and a screen tray moving mechanism, made in the form of an electromagnet with a core and a rod, spring-loaded from relative to the housing, and the rod is connected to the shielding tray. 2. The device according to claim 1, with the proviso that the tube feed mechanism comprises guides, a non-cylinder and rolls, a dog and a flag mounted on a rod mounted to move along the guide , 3. The device according to claim 1, with the proviso that the control system includes an electric circuit with a switch for controlling the pneumocylinDrom and the screen tray moving mechanism, a tube moving control unit comprising a power circuit, a toggle switch, sensors located along the guide along the movement of tubes and connected along the guide along the movement of tubes and connected to the power supply circuit of the tube movement control unit, relays connected to the sensors and the corresponding power supply circuit, two additional GOVERNMENTAL relay in which one of the contacts connected to the power circuit, and the other - with a tumbler and with contact grooves both relays, one of the contacts of the contact pairs is connected to the power circuit. & 4 I // L, hl .. i, .g. . 3 /. zsh Fcrz ri /: 5 //: & & "G. 7