EP1096046A2 - Method for cleaning the yarn brakes of a creel and trolley equipped with blowing nozzles - Google Patents

Abstract

In known methods and blow wagons, a blow wagon constantly moves back and forth on one side of the gate and directs its air curtain-like blowing jets against the thread brakes. A separate fan with motor is required for this. Cleaning is noise-intensive and leads to high air throughput. The aim is to develop a method and a blow wagon which enable more effective cleaning, in particular by deliberately removing deposits which are located at certain points on the thread brakes. The blowing carriage (2) is stopped by appropriate means in front of each of the vertical rows in which the thread brakes (10) are arranged, and a small amount of compressed air is passed through one or more nozzles (25) of small nozzle openings () on each floor within a blowing interval. 50) blown onto the thread brakes (10). The cleaning is more effective; a separate compressed air supply can be saved. <IMAGE>

Description

The invention relates to a method for cleaning thread brakes of a gate according to the preamble of claim 1 and a blow wagon according to the Preamble of claim 5.

On the thread brakes of a gate, through which the threads drawn from the bobbins dust, abrasion and fluff are deposited. So that a trouble-free It is necessary to maintain the barrel and the same thread tension Clean thread brakes. The thread brakes also become thread tensioners called. In this context, the term thread brake is also intended to mean thread clamping elements include.

DE-A 31 41 727 describes a generic method and a Generic blow wagon for cleaning thread brakes of a gate known. The blow wagon has a rail-bound chassis on which one Air distribution unit with an air distributor pipe with blow-out elements is flanged on. For a creel on which the threads on the Are guided along the gate side, the blow-out elements are tubular Extension elements have been extended, the blow-out elements in the form of Blow nozzles end directly at the thread brakes (thread tensioners). While During operation, the blow wagon constantly moves back and forth on one side of the gate directs its air curtain-like blowing jets against the thread brakes. For Generation of the blowing jets has its own fan with a motor. The cleaning with this blower car is very easy thanks to the fan with motor noisy. The constant air outlet leads to a high air throughput. The Effectiveness of this cleaning process and the blow wagon in relation to that Removing deposits from the thread brakes is unsatisfactory. It will blown even in areas outside the thread brakes, resulting in a high Energy consumption and possibly leads to disturbances in the course of the thread.

The applicant is also aware of nozzles directly on the thread brakes in the creel to integrate. The nozzles are aligned against the direction of the thread. There a considerable draft caused by the high speed of the threads, this arrangement requires a higher one, as opposed to the air pressure of the nozzles Air pressure to achieve a cleaning effect. Due to the large number of nozzles and the extensive installation of compressed air hoses are the High flow losses. A valve must be provided at least every two rows the valves are controlled one after the other. A creel with Thread clamping elements (clamping devices) and integrated nozzles is from the DE-A 42 13 859 known.

The object of the invention is to provide a method for cleaning a thread brake Gate according to the preamble of claim 1 and a corresponding one Blower car according to the preamble of claim 5 to develop a higher Enable effectiveness of cleaning; especially by allowing the preferentially starting at certain points on the thread brakes Targeted removal of deposits.

The object is achieved by the characterizing features of claims 1 and 5 solved.

In a method according to the invention for cleaning thread brakes a Gates, which are arranged in vertical rows and levels in the gate a blowing wagon was guided along the side of the gate and in front of each of the vertical rows the thread brakes stopped. During stopping, it will be within one Blow interval on each floor a small amount of compressed air through one or more Nozzles which are arranged at the front ends of boom supports and which have small nozzle openings, blown.

The cross section of a nozzle opening is 0.2 to 30 mm ² , preferably 0.2 to 10 mm ² , in particular if there are several nozzles on each floor.

By stopping the blowing car, the nozzles stay in one position in front of the Thread brakes. The nozzles are designed so that nozzle openings of the nozzles are open the locations of the thread brakes at which deposits settle are. The small diameter of the nozzle openings creates in the blowing interval targeted nozzle jets on these deposit points of the thread brakes. This Targeted jet streams are required for safe cleaning of the deposits only a small amount of compressed air, i.e. in the blowing interval can with low pressure and compressed air is blown onto the thread brakes with a short duration. Therefore, it is possible to do without a separate fan with motor. A connection of the Compressed air device to the usually existing compressed air network, e.g. from 6 bar, is completely sufficient. Impairment of the thread run due to excessive, Blowing extending over the entire gate side is avoided.

When guiding the blow car along the gate, the need to Boom brackets attach nozzles a certain distance from the vertical Tension bars on which the thread brakes are attached so that they are securely attached to the Tension bars can be moved past. As a result, the lateral distance is the Nozzles limited to the thread brakes. With those attached to the boom supports Nozzles are only possible on the side of the thread brakes.

According to claim 2, the positions of the nozzles during the stopping of the Blowing car before and after the blowing interval of driving positions in blowing positions the blowing interval can be adjusted back into driving positions. This adjustment of the Allows nozzle positions in blowing positions, with the nozzle openings of the nozzles to get closer to the deposit points of the thread brakes. The Positions of the nozzles can be in positions in front of, above or below the thread brakes can be adjusted so that the nozzle jets depending on the requirements of the Deposits of the thread brakes in various directions these can be addressed.

According to claim 3, the positions of the nozzles can be adjusted by compressed air and this compressed air is blown through the nozzles onto the thread brakes in the blowing interval become. This has the advantage that only one compressed air device and Use of compressed air both for adjusting the nozzles and for blowing the Thread brakes require only a small amount of compressed air.

In addition, according to claim 4, the blow wagon on eyelets of the gate be stopped and compressed air through parallel to the boom supports Blow pipes with blowing openings distributed over their lengths on the thread holding elements of the gate are blown. This also allows the thread holding elements getting cleaned.

A blow wagon for cleaning thread brakes of a gate has, according to the preamble of claim 5, a rail-bound undercarriage with a drive, a vertical support, horizontal boom supports arranged in tiers, at the front ends of which at least one nozzle is arranged and with a compressed air device with the nozzles leading air lines. According to the invention, the blowing carriage has means for stopping in front of the vertical rows of the thread brakes and nozzles with nozzle openings with cross sections of 0.2 to 30 mm ² each.

This blow wagon is particularly suitable for carrying out the method according to claim 1. As already mentioned, the cross sections of the nozzle openings can preferably each be 0.2 to 10 mm ² .

The means for stopping in front of the vertical rows of thread brakes can also be used connected to the drive, program-controlled switching means that drive control the blow wagon just in front of the vertical rows of thread brakes stops. These means can also be one or more, on the vertical support attached sensors that determine the location of the vertical rows of thread brakes, for example, using the tension bars, and using the sensors connected switching means of the drive. Through these means it is possible stop the blow wagon just in front of the vertical rows of thread brakes.

For the targeted cleaning of the thread brakes at, usually several, deposition points, it is advantageous to have the appropriate number of nozzles, namely at least two nozzles on each floor. For example, up to about ten nozzles can be used. The cross sections of the nozzle openings in the case of a plurality of nozzles on one floor are preferably 0.2 to 10 mm ^{2 in} each case.

According to claim 7, the blow wagon has means for adjusting the positions of the Nozzles between driving positions and blowing positions with adjustment elements and with Adjustment means that are connected to the adjustment elements. The Adjustment elements can be the nozzles themselves or elements that come with the nozzles are connected and by adjusting the nozzles are also adjusted to For example, the boom girder, the vertical girder or additional elements. The adjusting means are connected to the adjusting elements, e.g. pneumatic and / or mechanical means. The adjustment means can Adjustment elements depending on the design of the blow car and location of the driving and Blow positions of the nozzles in all possible directions, vertically, horizontally perpendicular to the direction of movement or in the direction of movement of the blowing car moved, for example moved or rotated. This blow car enables a more targeted. Blowing the thread brakes; he is especially for Suitable for carrying out a method according to claim 2.

The adjustment elements can according to claim 8 by at the front ends of the Cantilever beams arranged nozzle body can be formed with at least two nozzles. When adjusting the nozzle body, several nozzles can be in the blowing position at the same time be adjusted. This simplifies the adjustment of the nozzles and causes one less construction effort than adjusting individual nozzles. Training the nozzle body with the nozzles can thus on the respective thread brakes be coordinated that the nozzle openings in the blowing position on the Deposit points of the thread brakes are directed.

A simple design of the adjustment means for adjusting the nozzle body are pneumatic displacement means with horizontal Pneumatic tubes and pistons connected to the nozzle bodies, the horizontal pneumatic tubes are formed by the bracket beams Connection lines from the boom supports to the nozzle bodies according to Claim 10 are particularly for a method according to claim 3, wherein the Compressed air is used to move and to blow the thread brakes, suitable.

Further simple adjustment means for adjusting the nozzle body are in accordance with Claim 11 mechanical rotating means connected to shafts of the nozzle bodies. This enables an alternative to the horizontal and, if necessary, vertical displacement of the Nozzle body rotations, e.g. from oblique or vertical positions in horizontal positions. The waves of the nozzle body can, for example, on the be attached to the rear ends of the boom supports. The turning means for turning the Nozzle bodies can e.g. Levers and adjustable chains that engage the shafts exhibit.

According to claim 12 is an adjustment element by a vertical adjustment support formed on which the boom support 23 and thus the nozzles or the nozzle body are attached with the nozzles. The adjustment bracket can be on or in the vertical bracket be led. Adjustment means connected to the adjustment support can be vertical Have displacement means, for example with a pressure cylinder.

In addition, blowpipes can be made parallel to the boom supports with blowing openings distributed over its length for cleaning the thread holding elements be arranged. Such a blow wagon is particularly suitable for carrying out a Suitable method according to claim 4.

The invention is illustrated schematically in the drawing using two Examples further explained. In Figures 1 to 5, the first example is one Blowing car and in Figures 6 and 7 the second example of a blowing car shown.

Figure 1 shows a side view of a gate with the blow car of the first Example, Figure 2 is a, from the perspective of the gate, vertical cross section through the Blow wagon and the gate in front of an eyelet with thread holding elements, Figure 3 a corresponding, somewhat enlarged cross section through the blow wagon and the gate in front of a tension bar with thread brakes, Figure 4 shows how it works the pneumatic displacement device for horizontal displacement of the Nozzle body based on horizontal cuts through a boom support in Driving position (Figure 4a) and in blowing position (Figure 4b) and the vertical displacement the nozzle body using a vertical section (Figure 4c) perpendicular to the Cross sections and Figure 5 shows the structure of the blowpipe using a vertical Cut through the boom support and the blowpipe.

Figure 6 shows the blow wagon of the second example using a Figures 2 and 3 corresponding cross-section through the blow car and the gate and FIG. 7 using a vertical section corresponding to FIG. 4c.

Example 1 (Figures 1 to 5):

Figure 1 shows a gate 1 with a blow wagon 2 according to the invention in one Side view in front of gate 1 and in front of blowing car 2. Gate 1 extends in Figure 1 from left to right starting from the gate beginning at the one Control cabinet 3 is arranged at the gate end. The gate 1 has one cuboidal support frame with horizontal and vertical struts 4, 5, whereby the vertical struts 5 extend to the bottom 6.

On the support frame is a coil holder frame, not shown in the drawing Coil holders 7 for receiving coils 8 attached. The coil holder 7 and so the coils 8 are arranged in vertical and horizontal rows, the horizontal rows are called floors below. In Figure 1 are only those Outline of the coils 8 and shown in Figure 2 coil holder 7 and 8 coils.

On the support frame is a tensioner frame with in front of the coils 8, vertical strips, called tensioning strips 9, on which thread brakes are installed on several floors 10 are arranged. The tension bars 9 are in the area of outer, vertical struts 5 of the support frame and are equipped with this of gate 1 can be moved outwards.

On the outer, vertical struts of the support frame are horizontal strips, Called eyelet strips 11 on which thread holding elements 12, e.g. Ceramic eyelets, are attached, arranged. The number of juxtaposed Thread holding elements 12 and thus the length of the eyelet strips 11 increases Gate start. Figures 2 and 3 show eyelets 11 near the Gate start.

To accommodate the blowing car 2 is on the upper horizontal cross members 13 of the Support frame that extends sideways outwards through the horizontal and vertical Struts 4, 5 protrude, a perpendicular to the struts 5, horizontal carriage support 14 attached. The carriage carrier 14 extends along of gate 1 from the start of the gate to beyond the end of the gate. The area behind the gate end serves as the parking position of the blower car 2.

A blow wagon 2 according to the invention has a rail-bound running gear Castors 15 and, in this example two, drive rollers 16 and one Drive 17, e.g. an electric motor, the shaft of which with the drive rollers 16th is connected to.

The driving rollers 15 and the drive rollers 16 are on the correspondingly shaped Carriage carrier 14 out. The directions of movement of the chassis and thus the Blowing car 2 along gate 1 are indicated by arrows 18 and 19 characterized. On the chassis are on the sides to the directions of movement 18, 19 attached limit switch 20. On carriage carrier 14 are on its start above the gate start and its end behind the gate end Sloping slopes 21 built-in sheets installed in the appropriate position of the blowing car 2 with sensors of the limit switches 20 are in contact.

At the bottom of the undercarriage there is a connecting element and possibly vertical beam 22, of the horizontal cantilever beam arranged in tiers 23 going out. At the front ends of the boom bracket 23 are Nozzle body 24 with at least two nozzles 25, here with five nozzles 25, is arranged. The blow wagon 2 has a compressed air device with the nozzle bodies 24 and air lines leading to the nozzles 25. In or on Connecting elements are, not shown in the drawing, feed elements Compressed air equipment, e.g. a compressed air connection, a pressure reducer and a Valve to which one is connected to air lines leading to the nozzle bodies 24 Air distribution device is connected, and possibly switching elements of the drive 17th arranged. The connecting element can be designed as a housing. In In this example, the connecting element has a connecting plate 26 and one Switch box 27 on. An energy chain 28 guided in the carriage carrier 14 includes to the control cabinet 27 leading power lines and one to the compressed air connection leading compressed air line.

The blowing car 2 has means for stopping in front of the vertical rows of the Thread brakes 10 and means for stopping on the eyelets 11 of the gate 1 on. The means for stopping in front of the vertical rows of thread brakes 10 have in this example one in the upper region of the vertical support 22 arranged proximity sensor 29 on when reaching the vertical Tensioner strips 9 emits switching pulses and with the switching means of the drive 17th connected is. The means for stopping the blower car 2 on the eyelet strips 11 can also have this proximity sensor 29, which also when the outer vertical struts 5 of the support frame with the eyelets 11th Can give switching impulses to the switching means of the drive 17.

In this example, the means for adjusting the nozzles 25 with the Nozzle bodies 24 connected horizontal displacement means and with a Adjustment support 30 connected, vertical displacement means; i.e. the Adjustment elements are through the nozzle body 24 and the adjustment bracket 30 and the adjustment means are formed by the horizontal and vertical displacement means. The Directions of movement of the nozzles 24 through the horizontal and vertical Arrows A and B in FIG. 3 and arrows a and b in FIG 4, the lengths of arrows a and b in FIG. 4 being the lengths of the displacements correspond.

The adjustment bracket 30 is guided by guides 31 on the vertical bracket 22 Tube to which the boom supports 23 are attached. The with the adjustment bracket 30 connected vertical displacement means are in Figure 2 (the clarity however, for the sake of pneumatic means not indicated in Figure 3) with a Pneumatic cylinder 32.

The horizontal displacement means connected to the nozzle bodies 24 are pneumatic displacement means with the bracket 23 formed by the boom Pneumatic tubes, the pressure spaces 33 are provided with a compressed air connection 34 and in the area of the front ends of the boom support 23 in front of the Compressed air connection 34 are closed by pistons 35. The pistons 35 are over Square tubes 36 connected to the nozzle bodies 24. At the front ends of the Boom supports 23 are stoppers 37 through which the square tubes 36 are guided are and which serve as locking of the piston 35 in the blowing positions (Figure 4 b). The pneumatic displacement means continue to point in the pressure spaces 33 extending tension springs 38, e.g. at their front ends in openings 39 of fasteners 40 attached to piston 35 and at their rear ends in in the bracket beams 23 attached transverse pins 41 are suspended.

The adjustment bracket 30 is also a pneumatic tube that is in operative connection with the stands as pneumatic tubes designed boom beams 23, formed. By a pressure space 42 of the adjustment support 30 is available in total standing pressure chamber volume increased.

The pneumatic displacement means also have a along the Adjustment carrier 30 guided compressed air line 43, which is located in levels on the Compressed air connections 34 of the boom supports 23 guided compressed air lines 44 branches. The compressed air lines 43, 44 are, as is apparent from Figure 4, on the the thread brakes 10 side of the boom bracket 23 attached. they are in the view of Figure 3 covered by the adjustment bracket 30 and therefore dashed drawn.

The nozzle bodies 24 have housings, e.g. Pipe sections 45 at their front Ends are closed by cover 46. The square tubes 36 are on the Lids 46 screwed.

In the driving position (Figure 4a), the pipe sections 45 envelop the front ends of the Cantilever beam 23, the interior 47 of the pipe sections 45 completely through the boom supports 23 are filled. The inner cross sections of the pipe sections 45 are dimensioned so that they can be moved on the boom supports 23. In in this example are the cross sections of the boom beams 23 and the pipe sections 45 round (Figure 4c).

The pistons 35 of the pneumatic displacement means are in the blowing position (FIG. 4b) moved by the distance (arrow a) to the thread brakes 10 and touch the Plug 37. The nozzle bodies 24 protrude beyond the front ends of the boom supports 23, their interiors 47 are free except for the square tubes 36. Close to the front ends of the boom supports 23 lead to these interiors 46 Compressed air connections 48 attached.

The nozzle bodies 24 each have two rows of nozzles 25, specifically an upper row with three nozzles 25 arranged next to one another in the direction of extension of the boom supports 23 and a lower row with two nozzles 25 likewise arranged next to one another. The nozzles 25 are formed from tubes 49 inserted into the tube sections 45 and running at an obtuse angle, with nozzle openings 50 directed towards the thread brakes 10. The cross sections of the nozzle openings 50 each amount to 0.2 to 30 mm ² , in particular 0.2 to 10 mm ² . In this example, the diameters of the nozzle openings 50 are each 1.2 mm and their cross sections are each approximately 1.13 mm ² . The sum of the cross sections of the nozzle openings 50 of the five nozzles 25 in one storey is approximately 5.65 mm ² .

The arrangement of the nozzle openings 50 of the nozzles 25 is on the respective one Thread brakes 10 matched. In this example there are thread brakes 10 with two Plates 51 with deposits on the side of the plates 51 and between the Plates 51 and inserted below the plate 51. On these deposits aim the nozzle openings 50 in the blowing position.

The pneumatic displacement means can one to the existing, the nozzle 25th supplying compressed air device separate compressed air connection to which the along of the adjustment bracket 30 extending compressed air line 43 is connected. In such a case, the air lines of the compressed air device would be directly to the Compressed air connections 48 of the nozzle body 24 connected.

In this example, the existing compressed air device forms at the same time Compressed air supply of the nozzles 25 the pneumatic, horizontal Displacement means. For this purpose, the vertical compressed air line 43 is the pneumatic one Shifting means connected to the supply elements of the compressed air device and serves the compressed air device as an air distribution device. The one to the Nozzle bodies 24 leading air lines are through the compressed air lines 44, the boom bracket 23 and lockable connecting lines 52, which are by the Compressed air connections 34 of the boom support 23 to the compressed air connections 48 of the Nozzle body 24 are guided, formed. The compressed air connections 34 of the Cantilever beams 23 are designed as valves, each with the corresponding Compressed air lines 44, the pressure chambers 33 of the boom support 23 and the Connecting lines 52 are connected and through which the connecting lines 52 are closable, with the valves in the compressed air lines 44 adjacent compressed air the outputs to the connecting lines Close 52 and if the pressure in the compressed air lines drops 44 open the outputs to the connecting lines 52.

The pneumatic means with the pneumatic cylinders 32 for vertical Moving the adjustment bracket 30 can also on the feed elements existing compressed air equipment must be connected.

On the cantilever beams 23 extend parallel to the cantilever beams 23 Blow pipes 53 are arranged with blow openings 54 distributed over their lengths. they are each provided with a compressed air connection 55, possibly with the corresponding one Compressed air line 44 is connected. You can via connecting elements 56 to the Cantilever beams 23 are attached.

In operation, the thread brakes are cleaned by the blow wagon 2 with in Driving position located nozzle bodies 24 is guided along the side of the gate 1 and stopped in front of each of the vertical rows of the thread brakes 10 by the proximity sensor 29 of the means for stopping detects the respective tension bar 9 and its switching pulses trigger the switching means of the drive 17.

In front of a tension bar 9, i.e. while the blowing car 2 is stopped the positions of the nozzles 25 by the means for adjusting the nozzles 25 from Driving positions adjusted in blowing positions. For this purpose, the adjustment carrier 30 is first by the pneumatic means with the pneumatic cylinder 32 in the direction of the arrow B (Figure 3) shifted vertically upwards by the amount according to arrow b (Figure 4c).

Then the nozzle body 24 by the pneumatic displacement means in the direction of arrow A (FIG. 3) by the amount according to arrow b (FIG. 4b) pushed horizontally forward by the pressure chambers 33 of the cantilever beams 23 and the pressure chamber 42 of the adjustment bracket 30 via the compressed air lines 43, 44 are filled with compressed air and the pistons 35 and thus over the Square tubes 36 forward the nozzle body 24 against the force of the tension springs 38 be pushed. Now the nozzle body 24 and thus the Nozzles 25 in the blowing position, the nozzle openings 50 of the nozzles 25 on the Thread brakes 10, namely on their deposit points, are directed.

In the following blowing interval, a small amount of compressed air is blown through on each floor the nozzles 25 of small nozzle openings 50 are blown onto the thread brakes 10, by switching off the compressed air supplied to the compressed air lines 43, 44 and which in the pressure chambers 33 of the boom support 23 and in the pressure chamber 42 of the Adjustment carrier 30 accumulated compressed air from these through the Pressure drop switching valves of the compressed air connections 34 and over the Connecting lines 52 into the interior 47 of the nozzle body 24 and from there is blown onto the thread brakes 10 through the nozzle openings 50.

As soon as the air pressure in the pressure chambers 33 of the boom carrier 23 is less than the spring force, the nozzle body 24 through the tension springs 38 in their moved back to the original positions. Then the adjustment bracket 30 in lowered its original position so that the nozzle body 24 and thus the nozzles 25 are again in the driving position.

In addition, the blow wagon 2 on the vertical, the eyelets 11 carrying Struts 5 of the support frame of the gate 1 stopped and compressed air through the Blown tubes 53 and their blown openings 54 blown onto the thread holding elements 12.

Example 2:

Example 2 corresponds to Example 1 except for those described below Differences.

The means for adjusting the nozzles 25 between driving positions and blowing positions have as the adjusting elements nozzle body 57 with a, at the front ends of the Boom bracket 23 attached shaft 58 and mechanical as an adjusting means with the Shaft 58 connected and, if necessary pneumatic, rotating means. The mechanical Rotating means have chains 59 which are connected to the shafts 58 via first ones Sprockets 60 and second at the rear ends of the boom brackets 23 arranged sprockets 51 are guided on. The second sprockets 61 are with Lever 62 connected. The levers 62 are articulated on one on the vertical support 22 guided rod 63 arranged. The rod 63 is by mechanical means or as shown here, by pneumatic means with a pressure cylinder 64 vertically slidable. The pneumatic means can on the existing Compressed air device must be connected. The straight to the nozzle bodies 57 leading air lines of the compressed air device are not in Figures 5 and 6 shown.

The chain wheels 60 can also have friction linings with the nozzle bodies 57 allow the nozzle body 57 to deflect when hitting obstacles, be connected.

The nozzle bodies 57 can each be formed, for example, from a plastic block with a lever section 65 and a nozzle section 66. The nozzle section 66 has two rows of nozzles 25 and is L-shaped, with in the blowing position (FIG. 6) one leg 67 of the L ' having the upper nozzle rows with three nozzles 25 vertically and the other, the lower nozzle row with two nozzles 25 leg 68 extends horizontally. In the blowing position, the vertically extending leg 67 is in front of the thread brake 10 and the horizontally extending leg 68 projects under the thread brake 10. Both legs 67, 68 have approximately the same leg length; the width of both legs 67, 68 corresponds approximately to the width of the thread brake 10. At the upper end of the vertically extending leg 67 there is in its interior a bore 69 running parallel to its upper edge, of which three lead horizontally outwards to the thread brake 10, which three upper nozzles 25 form nozzle bores 70. At the front end of the horizontally extending leg 68 of the L, which projects under the thread brake 10, there is in its interior a bore 71 running parallel to its front edge, from which two vertically upwards to the thread brake 10 and outwards, the two lower nozzles 25 outgoing nozzle bores 72. The nozzle bores 70 and 72 form the nozzle openings of the nozzles 25 at their outlets from the nozzle body 57. The bores 69 and 71 are connected to one another and to a compressed air connection 76 by further bores 73, 74, 75. The corresponding air line of the existing compressed air device is connected to this compressed air connection 76.

In operation, the nozzle bodies 57 are stopped while the blower car 2 is stopped in front of the tension bars 9 first from their driving positions, in which their Nozzle sections 66 face down to the blowing position where the vertical Leg 67 of their nozzle sections 66 in front of the thread brakes 10 and horizontal legs 68 of their nozzle sections 66 under the thread brakes 10 are arranged, rotated in the direction of arrow C. To do this, use the Compressed air cylinder 64 the rod 63 and with it the lever 62, here down, moved and over the sprockets 60, 61 and the chain 59, the shafts 58 of the Nozzle body 57 rotated. In the blowing positions, the Compressed air is fed directly into the nozzle body 57 and through the nozzle bores 70, 72 blown onto the thread brakes 10.

Claims (13)

Process for cleaning thread brakes of a gate in vertical Rows and floors are arranged in the gate, in which a blowing car compressed air is routed along the side of the gate and on each floor at least one, at the front ends of boom carriers of the blowing car arranged nozzle is blown onto the thread brakes, characterized in that the blowing carriage (2) is in front of each of the vertical rows the thread brakes (10) is stopped and within a blowing interval a small amount of compressed air on each floor through one or more nozzles (25) small nozzle openings (50) is blown onto the thread brakes (10). A method according to claim 1, characterized in that during the Stopping the blow car (2) before the blow interval the positions of the Nozzles (25) can be adjusted from driving positions to blowing positions and after Blow interval the positions in driving positions are adjusted. Method according to claim 1 or 2, characterized in that the positions the nozzles (25) are adjusted by compressed air and this compressed air in the blowing interval is blown through the nozzles (25) onto the thread brakes (10). Method according to one of claims 1 to 3, characterized in that the Blow car (2) on eyelets (11) of the gate (1) is stopped and Compressed air through blow pipes (53) running parallel to the boom supports (23) with blowing openings (54) distributed over its length on thread holding elements (12) is blown. Blow wagon for cleaning thread brakes of a gate, which are arranged in vertical rows and in stages in the gate, with a rail-bound running gear with a drive, with a vertical support, with horizontal, in stages arranged boom supports, at the front ends of which at least one nozzle is arranged, and with a compressed air device with air lines leading to the nozzles, characterized by means for stopping the blowing carriage (2) in front of the vertical rows of the thread brakes (10) and by nozzles (25) with nozzle openings (50) with cross sections of 0.2 to 30 mm ² . Blowing car according to claim 5, characterized by at least two to the nozzles (25) arranged at the front ends of the boom supports (23). Blowing car according to one of claims 5 or 6, characterized by means for adjusting the position of the nozzles (25) with adjusting elements and with the adjusting means connected to the adjusting elements. Blowing car according to claim 7 characterized by at the front ends of the Boom support (23) arranged nozzle body (24) with at least two nozzles (25), which form adjusting elements. Blowing car according to claim 8, characterized in that the adjusting means pneumatic displacement device with horizontal pneumatic tubes and with with the pistons (35) connected to the nozzle bodies (24), the horizontal pneumatic tubes are formed by the boom support (23). Blowing car according to claim 9, characterized in that the to Lockable connecting lines (52) guiding air lines leading to nozzles (25) from the boom supports (23) to the nozzle bodies (24). Blowing car according to claim 8, characterized in that the nozzle body (24) shafts (58) and the adjustment means mechanical with the Have shafts (58) connected rotating means. Blowing car according to one of claims 5 to 11, characterized in that an adjustment element is formed by a vertical adjustment support (30) on which the boom supports (23) are attached. Blowing car according to one of claims 5 to 12, characterized by itself blowing tubes (53) extending along the cantilever beams (23) with a blowing openings (54) distributed over their length.

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