SU1690885A1 - Line for applying spiral fins to pipes - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular to equipment for the manufacture of silver pipes by spiral winding of a tape. The purpose of the invention is to increase productivity, reduce material costs and improve the quality of the resulting tubes. The face includes a loading device 1 installed in the course of the process, a device for stripping pipes 2, a knurling device 3, a device for shaping and winding the fins 4, a device for securing the fins on the pipe 5, a device for notching and bending the fins 6, an additional device for driving pipe 7, belt breaking device 8, receiving device 9, chamfering and cutting machine 10, bay holder 11 Introduction to the line of the device for notching and bending the ribs improves the quality of ribbed pipes by increasing the coefficient their heat transfer. The presence of an additional device for driving the pipe reduces the length of the Preform, and the presence of a device for breaking the tape reduces the consumption of the belt. 4 hp ff. 8 il. C / 1

Description

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The invention relates to the processing of metals by pressure, in particular to equipment for the manufacture of silver pipes by spiral winding of a tape.

The purpose of the invention is to increase productivity, reduce material consumption and improve the quality of silver pipes.

FIG. 1 schematically shows a line; in fig. 2 - the same, top view; in fig. 3 - kinematic line diagram; in fig. 4 - additional pipe drive device; in fig. 5 is a view A of FIG. four; in fig. 6 is a section BB in FIG. five; in fig. 7 is a section bb of FIG. one; in fig. 8 - section G-Y in FIG. 2

The line contains along the process and along the axis of movement of the pipe, connected kinematically, electrically and vehicles with a loading device 1, a device 2 for stripping the carrier pipes, a rolling device 3, a device for forming and winding the ribs 4, an anchoring device 5, a notch device and bending the ribs 6, an additional device 7 for driving the pipe, a device for breaking the tape 8, a receiving device 9, a bevel cutting machine 10, a stand for the bay tape 11.

The boot device is made in the form of a rack with a mechanism 12 piece delivery of pipes and feed rollers 13 with a drive.

The device for stripping the carrier tubes includes two rotating brushes 14 with the actuator 15 mounted with the possibility of radial movement relative to the carrier tube.

The rolling device has three driven profiled rolling rollers 16 installed with the possibility of radial movement relative to the pipe and the spiral ribs turned at the elevation angle. Rolling unit 3 receives rotation from the main drive 17 through wedge and chain drives, gears and drive shafts. The device for forming and winding the ribs consists of a hollow drive roll 18 and a non-drive roll 19.

The fixing device is made in the form of a free rotating roller, installed with the possibility of radial movement relative to the pipe and turned at the angle of elevation of the spiral ribs. The device for cutting and bending the ribs comprises a milling cutter 20 sandwiched between the disks 21 and 22 mounted on the sleeve 23 moving along the axis with the shoulders. On both sides, the shoulders interact with elastic elements 24, for example, springs. Springs 24 and V1ulke 23 installed on the axis

25 bearing bracket 26 fixed

movably on a common frame behind the device 5.

Additional drive unit

pipe contains base 27, gear 28

and carriage 29 mounted on

27 with axial movement

relative to the bed 30 in the guides

31, The gearbox 28 is fixed on the base 27.

The gearbox 28 houses the drive shaft 0 32 and the driving screw 33. are kinematically connected to each other and through the overrunning clutch 34 to the main drive 17.

The movable carriage 29 has a hollow rotating spindle 35 mounted on the 5th axis of the finned tube and kinematically connected by means of gear 36 and sliding gear 37 to the drive shaft.

32. On the spindle 35, hingedly mounted petals 38 of the collet chuck interacting with the control coupling 39 movably mounted in the slots of the carriage body 29 and the lever 40. In order to ensure the longitudinal movement of the carriage 29 during the working stroke, it is connected to the chassis

5 by means of a screw 33 by means of a controlled detachable uterine nut 41.

The device for breaking the ribbon is made in the form of an overrunning clutch, the hub 42 of which is mounted on the drive shaft 32, and

0, the yoke 43, via the lever 44, is connected to the actuator 45 (for example, a pneumatic cylinder), which provides rotation of the silver pipe with the main actuator of the 17th line disconnected.

5 The overrunning clutch is installed in such a way that it slips when the shaft 32 rotates and jams when the yoke 43 rotates in the direction of rotation of the driving shaft 32. This causes the drive shaft 32 to rotate, the spindle 35 and the finned tube, and the overrunning clutch 34 slips. The receiving device is made in the form of a detachable tray with mechanisms for axial movement and transfer of pipes.

5 Fasnochno-cutting machine is installed parallel to the receiving device and contains a drive disk milling cutter 46 and a chamfer 47.

The line can work in the adjustment mode when controlling the mechanisms from the console and in the working automatic mode. Before switching on the line it is necessary to bring all the mechanisms and devices to their original position - pipe-blank

5 is located in the store of the loading device 1, the pipe-cleaning device 2 is turned off, the knurling rollers 16 are retracted from the pipe, the tape is loaded into mill rolls 18 and 19, the fixing device 5 is retracted, the device for cutting and bending the ribs

retracted, the auxiliary pipe drive device 7 is in the rear position, the collet chuck is decompressed, the uterine nut 41 is turned off, and the disk milling cutter 46 and the chamfer head 47 are retracted.

In automatic mode, the line works as follows.

When starting the button on the control panel of the line, the tubular billet is fed by the mechanism 12 by piece issuing from the rack to the initial position in the tray and turns on the microswitch that commands the feed and rotation of the feed rollers 13. In this case, the feed rollers 13 provide rotation and axial feed of the tube stock. On the control panel turns on the device 2 of the stripping pipe. The tube stock passes through a stripping device, where the outer surface is cleaned with brushes 14. The cleaned workpiece is moved through the rolling device 3 until it touches the stop equipped with a limit switch (not shown) that ensures that the end of the billet ends behind the rolling rollers by the amount of a smooth (non-ribbed) end. The limit switch gives the command for supplying the knurling rollers 16 to the pipe, turning off and discharging the feed rollers 13, as well as retraction of the stop. After 0.5–1.5 s after the time limit switch trips, the time relay switches on the main drive 17. There is a knurling on the outer surface of the spiral groove pipe, longitudinal scratches or another profile with rotation and axial feeding of the tube blank in accordance with the specified step.

The pipe, moving along the axis, passes the hollow mill roll 18 by the amount of the smooth end and presses the limit switch flag, which instructs the pneumatic cylinder 48 to turn on the rotational drive coupling 49 and connect the working element of the fixing device 5 to the pipe.

The tape fed from the coil, fixed on stand 11, and clamped in rollers 18 and 19, is rolled unevenly in height (a large degree of deformation at the apex and smaller at the base), is formed into a spiral and is wound on a pipe, forming spiral ribs, mounted on the tube device 5.

3-5 seconds after the end switch is triggered, a device 6 for cutting and bending the ribs is brought to the pipe through a time relay. His driving disc 21 enters the intercostal space, and the milling cutter 20, touching with the knives of the rib tops, begins to rotate, cut the ribs and bend the dissected petals in accordance with the specified parameters.

Thus, the finning of the pipe is carried out in the main section.

50-100 mm before the end of application of the profile with knurled rollers 16 at the required length are coarse, its front end presses the limit switch flag on the receiving device 9, which gives the command to turn on the device 7 of the auxiliary pipe drive.

Pneamocylinder 45 through the orchag 44 engages the mat nut 41 41 into engagement with the running zint 33, together with the carriage 29 translational motion, and the coupling 39 moves the levers 40 from the pneumatic jig 50 s in which the petals 38 clamp the silver tube along the outer one; a meter.

Thus, the pipe on the 5G mm track segment receives rotation and axial movement from the rolling rollers 16, as well as from the auxiliary drive device 7. In this case, the overrunning clutch 34 compensates for the difference in revolutions received by the tube from the rolling rollers 16 and from the drive shaft 32 through gears 36 and 37.

When the required length of knurling of the profile is reached, the front end of the pipe “marks the flag of the second limit switch installed on the receiving device 9, which gives a command to retract the rolling rollers 16. The pipe continues rotational and translational motion now only from the additional drive device. it rotates from the main drive 17 through the overrunning clutch 34, gear 36, sliding gear 37 and hollow spindle 35 carrying the collet chuck.

After the finning of the pipe at a predetermined length, the front end of the pipe presses the third limit switch on the receiving device 9, which gives the command to turn off the main actuator 17, retract from the pipe of the fixing device 5 and the edge cutting and bending device 6. When this cutter 20 with the sleeve 23 under the influence of elastic elements 24 returns to its original position, broken after the full finning of the entire pipe as a result of the accumulated error of fin pitch. 2-3 seconds after the time switch trips, the time switch switches on the pneumatic cylinder51 of the tape breaking device, which through the lever 52, the holder 43, the hub 42, the drive shaft 32 and gears 37 and 36 rotates the hollow spindle 35 through an angle of 15-20 °. Driving this, the drive shaft 32 rotates freely in the overrunning clutch 34 associated with the main drive 17.

Since the tape is clamped in rollers 18 and 19, turning the cut pipe causes a belt break at the exit from rollers 18 and 19. 5-6 seconds after the last limit switch was triggered via a time relay, a command was given to unclamp the collet clamp, disconnecting the separable uterine nut 41 from the suspension screw 33, and after 7-8 seconds a command is given to return the carriage 29 to its original position by a pneumatic cylinder 53. At the same time, the finished pipe is driven forward by the mechanism 54 of the receiving device 9 forwards from the auxiliary drive device 7 and lifting skis 55 is provided in the rear end of the chamfer of the carved-off- position processing machine 10.

In this position, the pipe is fed along the axis until it touches the front end of the anvil 56, its rear end is clamped and cut by a disk cutter 46 at a predetermined size, and then the shaped head 47 removes the chamfers on the inner and outer edges of the pipe end. Thereafter, the pipe is opened and transferred to the accumulator 57.

During the finning process, after finishing the profile rolling at the required length of the pipe and withdrawing the knurling rollers 16, the next machine is fed to the initial position from the rack of the loading device 1, which is fed through the rollers 13 and the rolling device 3 until it stops.

Then, at the moment the previous ribbed pipe is withdrawn from the auxiliary drive device 7, the subsequent pipe is clamped by the knurled rollers 16, the stop is retracted and the main drive 17 is turned on. The process of pipe finning is repeated.

Claims (5)

Claims 1. Spiral-wound ribbing lines for a tape, containing a loading device, a main drive, a forming and waving ribs, a device for securing the ribs on the pipe, installed along the process and connected with kinematically, electrically and vehicles receiving device, cutting device, belt holder for tape, characterized in that. that, in order to increase productivity, reduce material consumption and improve the quality of pipes, it is equipped with a pipe stripper installed behind the charging device and electrically connected with it, a device for cutting and bending ribs mounted behind the device for securing the edges on the pipe and connected with it electrically and kinematically by an additional device for the translational and rotational movement of the pipe placed successively behind the device for cutting and bending the edges and electrically connected with a receiving device, as well as with a device for breaking the winding tape, installed behind an additional device for driving the pipe and kinematically connected with it. 2. Line according to claim 1, characterized with 0 in that the additional pipe drive device is made in the form of a carriage mounted on the base with axial reciprocating movement of the carriage, the drive shaft, the lead screw, 5 kinematically connected to each other and to the main drive, placed on the carriage along the feed axis of the hollow spindle pipe, kinematically connected to the drive shaft and mounted on the spindle of the collet chuck to fix the pipe to the outer diameter of the ribs. 3. Lini on PP.1 and 2, characterized in that, the additional device drive the translational and rotational 5 pipe movements are connected to the main drive by means of an overrunning clutch. 4. Lines on PP.1-3, characterized in that the device for breaking the ribbon is made in the form of an overrunning clutch, lever 0 and the power cylinder, with the coupling hub mounted on the drive shaft of the additional pipe driving device, and the sleeve is connected with the power cylinder by means of a lever. five 5. Line according to claims 1-4, characterized in that the device for notching and bending the ribs is made in the form of a movably mounted bracket, carrying an axis with a sleeve with end faces placed on it 0 shoulders, a milling cutter, two discs and elastic elements, wherein the sleeve is mounted on an axis with the possibility of axial movement, the cutter is placed between the disks mounted on the sleeve, and the elastic elements are mounted on the axis with the possibility of interaction with the shoulders of the sleeve. / LO CO CC About 0% tc 51 I bud A g 50 40 5 H 15 in-in 15 + 7 g g