EP1057904A1 - Apparatus for bearing and positioning of stationary flats on carding machines - Google Patents

Abstract

The apparatus to hold and position static flats has a swing frame for the flats which can move them clear of the drum for cleaning and inspection and return without setting adjustments. The apparatus to hold and position static flats (12) in a carding machine, has at least one moving frame (7,8) to secure the flats (12). When the frame (7,8) is opened, all the flats (12) are lifted clear of the carding drum. The flats (12) are held rigidly at a tangent to the carding drum, and can slide radially. In the closed position of the frame (7,8), the flats (12) lie on a supporting curve (2). The flats (12) are pressed by a spring against the supporting curve (2) which has one end at the frame (7,8) and the other end at the flats (12). The frame (7,8) swings on a shaft (6), with its rotary axis at least 200 mm to one side of the nearest flat (12) and at least 150 mm above it. Two frame sections (7,8) grip over each other crosswise, and are mounted to swing on a Y-shaped carrier (5). The frame can also slide along a linear guide. The frame (7,8) has slits (20) aligned radially to the card drum, to take a screw (21) with a fitting shoulder and the like at the flat (12). The spring is a pressure spring to support the flat (12) against tilting while the flat (12) is not in contact with the support curve (2), and the spring can be a rubber unit. The frame (7,8) is pressed away from the card drum by springs (13) and balancing weights (33). The frame (7,8) has a locking mechanism with a rotating shaft (14) with a rigidly fixed cam disk (17) and a lever (15). In the closed position, the cam disk (17) grips at a fixed bolt (18). Rotation of the locking mechanism locks and releases the frame (7,8). An initiator can be at the lever to control the locking and release actions. An elastic seal is between the static flats, in a U-shape, held in place by a U-shaped mounting clip and clamping screws at a flat (12). The seal is of rubber or foam rubber.

Description

This invention relates to a device for storing and Positioning of stationary lids in cards with at least one movably mounted bracket on which the lid is mounted, being in open state of the bracket all lids are lifted off the reel are.

The actual carding work on cards is often done by moving covers rendered. These revolving lids slowly move the lid arches along and require a complex drive mechanism. This type of lid construction is expensive and requires a high one Maintenance expense and dirty.

Modern cards are increasingly used with stationary lids equipped. This measure enables better removal of Dirt from the cotton and a reduction of nits in the yarn. This enables both the quality and productivity of the carding process increase in a desired manner.

The latest developments in fittings and dirt separators allow even the complete elimination of the revolving cover together with their well-known disadvantages: high purchase costs and maintenance, susceptibility to failure, excretion of good fibers.

Revolving lids show compared to stationary lids of previous construction however also benefits. These benefits are broad ensured by the present invention for stationary lid.

One of the advantages of traveling covers desired in spinning practice consists in the possibility of visual control of the condition the lid and its trimmings. Regular checks of the lid sets are appropriate and necessary to ensure the carding quality to deliver. In the previously known versions of stationary Capping is not this simple way of visual inspection given. To check the set on stationary lids are more or less complex dismantling work necessary and during assembly the important distance between cover and drum is again accurate to adhere to.

Another disadvantage of the known stationary cover is the type of their impractical attachment to the machine frame. The Distance of the cover to the drum in the range of usually 0.25 to 0.35 millimeters must be used individually or in small groups ± 0.01 millimeters) can be set to. This work is appropriate time consuming and therefore costly.

Another advantage of the well-known construction for revolving covers is that revolving lids can give way in the radial direction, since they only lie loosely on the cover sheet. This is why of Advantage, because thick spots are always drawn into the card and the revolving cover evade it in the radial direction can. This option would be particularly useful for stationary lids with their rigid all-steel fittings very desirable. This would the sets are spared, their wear is reduced and the whole Relieved structure of blows.

Finally, it should be noted that revolving covers on cover sheets lie on it and therefore not in the worst case on the drum can fall. It is safe to avoid this probably rare case very important, since such accidents cause considerable damage to property and in the worst case, injuries to people being able to lead.

A simple way of fastening stationary lids is, for example described in EP 0 152 053 A. The individual lids are grouped in holders. The connections of the lids to the holder and the holder to the card is done by means of rigid Screw connections. Special precautions for hiring and Checks are not listed. In this case there are screw connections to solve what the operators in the spinning mill is not reasonable.

Constructions simplifying the lid adjustment are in the EP 0 364 861 A and in US 4,001,917 A. The ones shown there Constructions each individual lid can be positioned from the outside become. However, the lids are still individually in place bring to. It is not possible to simply open the system.

EP 0 195 756 A describes a radially elastic cover bearing shown. Each stationary lid is individually adjustable and the opening of the system is by unscrewing each individual lid only possible with great effort.

The generic US 5,005,260 A shows stationary lid, which in a group of four grouped together in a frame with arms are. The system is rotatably mounted on these arms and is by Panning open. The lids are adjusted individually using screws, nuts and lock nuts for each lid separately. When closed, the entire system is by means of Screw connections on a front cover bend ("front concentric bend "). The system represents progress, it must however continue to be screwed to open the system. Consequently are used to check and clean the sets on the stationary Capping tool and considerable time required. Furthermore, they are The lid is rigid and cannot avoid thick spots. in the In the event of breakage or even loosening of a fastening element the lid falls on the drum, causing an accident.

The present invention is based on the object of cards for the most part or to be equipped exclusively with stationary lids, these covers for the operator for inspection and cleaning quickly, easily and without subsequent adjustment work make sure that the lids are positioned quickly, securely and precisely to the drum, to allow the escape in the radial direction and a To prevent lids from falling onto the drum.

This task is solved with a device with the features of claim 1.

Devices with stationary lids according to the present invention largely take on the desired advantages of the revolving cover. she therefore offer a significant advance for spinning practice.

Figur 1 eine Seitenansicht der Vorrichtung zeigt,

Figur 2 einen Querschnitt durch die Karde mit der erfindungsgemässen Vorrichtung zeigt,

Figur 3 den Verriegelungsmechanismus von der Seite zeigt,

Figur 4 die Abdichtung der stationären Deckel zeigt,

Figur 5 die Seitenansicht einer anderen erfindungsgemässen Gestaltung der Vorrichtung zeigt und

Figur 6 die Seitenansicht einer weiteren erfindungsgemässen Gestaltung der Vorrichtung zeigt.

Preferred embodiments of the invention are explained by way of example with reference to the following schematic figures, in which:

FIG. 1 shows a side view of the device,

FIG. 2 shows a cross section through the card with the device according to the invention,

Figure 3 shows the locking mechanism from the side,

FIG. 4 shows the sealing of the stationary cover,

Figure 5 shows the side view of another inventive design of the device and

FIG. 6 shows the side view of a further design of the device according to the invention.

Figure 1 shows a side view of a card. On the side plate 1 is a cover sheet 2 is attached in a conventional manner. This cover bow 2 can move in the radial direction by means of set screws 3 become. In conventional cards 2 run on this cover sheet the revolving cover. By adjusting the cover sheet 2 in a radial All revolving lids on conventional cards are exactly in the direction positioned. This simple and proven process is for revolving lids best introduced in spinning practice.

On the side plate 1 by means of screws 4 on each side of the machine a Y-beam 5 attached. These two Y-beams 5 hold two waves 6. The axis of rotation of the shafts 6 is preferably at least 200 mm to the side and at least 150 mm above the nearest stationary Cover 2 arranged. On a shaft 6 is a bracket 7 and on the another shaft 6 a bracket 8 pivotally mounted. The bracket 7 is in Shown closed position, bracket 8, however, in the open position. The two brackets 7, 8 can be opened independently of one another and be closed. A first cross connection 9 and a second Cross connection 10 connect two side parts of the brackets 7 and 8. These cross connections 9, 10 and the side parts of the respective Brackets 7, 8 are held together by means of screws 11, for example. Every other positive and positive connection is the same permissible, e.g. Welding. The bracket / cross connection system results in a stable framework. Within this framework are stationary Lid 12 hung.

The brackets 7, 8 are shown in the cross-section in the Y-beam 5th stored. This means that the left bracket 7 on the right Side of the Y-beam 5 is rotatably mounted. With this overarching Arrangement results in a favorable location of the fulcrum at Open the bracket 7, 8 in the sense that the opened bracket all stationary cover 12 lifts sufficiently far from the drum 22 and thus makes accessible. This means that all covers 12 are for the operating personnel easily accessible without having to lift the brackets 7, 8 excessively high.

To compensate for the weights of the brackets 7, 8 with all attached Elements can be provided with springs 13 (bracket 7). These springs 13 are known as gas pressure springs, for example executed. The spring force of these springs 13 is dimensioned in such a way that the weight of the bracket 7, 8 is somewhat overcompensated. Consequently the springs 13 hold the open brackets 7, 8 securely in the upper one Position and the operator only need a small force to pull the brackets 7, 8 down and bring them into the working position. To compensate for the weight instead of springs 13 or in In addition, one or more counterweights 33 are used be (bracket 8).

The bracket 7, 8 each still carry a locking mechanism. This consists of a shaft 14 which extends from one side of the Carding extends to the opposite side. At both ends a shaft 15 is rigidly attached to the shaft 14. Outdoors At the end, the lever 15 carries a handle 16. Likewise, at both ends the cam 14 each has a cam 17 rigidly attached. The entire system of shaft 14 with the elements rigidly attached to it is rotatably mounted in the brackets 7, 8. By turning the shaft 14 on the handle 16, the cam 17 with a stationary bolt 18 are engaged. Due to the bilateral arrangement of the Lever 15 it is possible to use the locking mechanism of any Open and close the side of the card. Thus a single Person from a single and any side of the card open, inspect the entire system of stationary lids 12, clean and close again. Unlock to Opening and locking to close is done with a single Rotation of the handle 16 without any special effort.

The already mentioned bolts 18 for locking are by means of a Holder 19 attached to the side plate 1.

The stationary cover 12 are preferably by means of a Fit shoulder screw 21 in slots 20 in the brackets 7, 8 out. Instead of a shoulder screw 21, other elements such as Pins, ordinary screws, etc. are used. The leadership in Slits 20 ensures rigid guidance of the stationary Cover 12 in the tangential direction and allows at the same time radial evasion of the stationary cover 12.

In the closed state of the brackets 7, 8 are stationary Cover 12 on the cover sheet 2. On the one hand, that the stationary cover 12 by moving the cover sheet 2 set together and quickly in their position relative to the drum 22 (FIG. 2) will and on the other hand never fall into the drum 22 can. When the bracket is open, the stationary hang Lid 12 in the slots 20. In this according to the invention Device, the stationary cover 12 in the working position, So with closed arms 7, 8, through the precisely manufactured and set cover sheet 2 positioned while accuracy and the position of the bracket 7, 8 are irrelevant. This allows one comparatively imprecise and therefore inexpensive manufacture of the entire ironing apparatus. Furthermore, the bracket 7, 8 as often as you want are opened and closed without the stationary cover 12 must be positioned separately. This is crucial for the user-friendliness of the system.

The type of suspension of the stationary cover 12 is shown in FIG. 2 explained in more detail. The elements already mentioned can be seen: stationary lid 12, closed bracket 7, side plate 1, decorative arch 2, slot 20, fitting shoulder screw 21. In addition the drum 22 is shown. The stationary lid 12 is in contact its ends in direct contact on the cover sheet 2. Any Movement of the stationary cover 12 in the direction of drum 22 is thus impossible. The shoulder screw 21 is through the slot 20 in screwed the stationary cover 12 into it. Between one on the bracket attached bracket 23 and the stationary lid 12 is an elastic Spring element 24 arranged. This spring element 24 can for example be a rubber element. The angle 23 is for example by screwing or welding rigidly to the bracket 7, 8 connected. The elastic element 24 is slightly biased and always pushes the stationary cover 12 down. In the open State leads the elastic spring element 24 to the stationary Cover 12 and places it properly on the cover sheet when it is closed 2 on. Should there be a thick spot between the drum 22 and the stationary one Cover 12 pass, the cover can in the radial direction dodge. The cover 12 is in the tangential direction, as already explained, passed through the shoulder screw 21 in the slot 20. Each stationary lid 12 can be loosened by the shoulder screw 21 and the attachment 25 of the elastic spring element 24 on Angle 23 removed individually and independently of the other lids become.

FIG. 3 shows a side view of the locking mechanism in FIG closed and locked position. By turning the lever 15 in the direction of rotation 26, the cam 17 is rotated and lost contact with the fixed bolt 18. The bracket 7, 8 can be thus open or the spring 13 or the counterweight 33 (FIG 1) lift the bracket 7, 8 independently upwards.

An initiator or sensor 27 is also shown in FIG. in the the system is properly closed and locked lies this initiator 27 of the lever 15. So that from the Control electronics of the card (not shown) are queried whether the system is properly closed and locked. Only in In this case the machine can be started up. This measure is important for the safety of personnel and equipment.

Figure 4 shows another detail of the system, the sealing of the stationary lid 12. During the carding process, large Lots of dust and fiber fragments released. this is the Main task of the card. It is now important for the spinning mill that this outlet properly through the intended suction elements is dissipated and not in an uncontrolled manner from the Card comes out. It is inevitable that between individuals stationary lids 12 gaps 28 are present. By these spaces 28 can leak dust and fiber fragments. It it is therefore necessary to effectively seal these gaps 28. According to the invention, this is done by means of a U-shaped attachment 29, which is clamped to the stationary cover 12 by means of clamping screws 30 becomes. At one end of the U-shaped attachment 29 is one Rubber seal firmly connected, for example a rubber tab 31 or a strip of foam rubber 32. By loosening the clamping screws 30 the seal can be removed quickly.

Figure 5 shows a possible variant of the bracket system and its Articulation on the card. A single bracket 34 now holds everyone stationary lid 12. The attachment of this stationary lid 12 is still carried out by means of shoulder screws 21 in slots 20. A carrier 35 is attached to the side plate 1 and in turn holds the bracket 34 in the manner already described by means of a shaft 6. FIG. 5 shows the closed state (full line) of the bracket 34 and the open state (dashed line). By means of the spring 13 or by means of a counterweight (not shown) Weight of the bracket 34 together with all elements attached, such as already described, can be compensated.

Figure 6 shows a further possible configuration of the bracket and his movement. The bracket 36 holds the stationary in the manner described Lid 12. A carrier 38 is attached to side plate 1. The bracket 36 slides up and down in a linear guide 37 and thus opens the system. The weight is determined, for example Springs 13 compensated. A locking and locking mechanism as already described, provision can be made (not shown).

Claims (14)

Device for storing and positioning stationary covers (12) in cards with at least one movably mounted Bracket (7, 8, 34, 36) on which the covers (12) are mounted, with all in the open state of the bracket (7, 8, 34, 36) Cover (12) are lifted off the drum (22), characterized in that that the cover (12) on the bracket (7, 8, 34, 36) with respect of the drum (22) rigid in the tangential direction, in the radial In contrast, are guided so that the Lid (12) in the closed state of the bracket (7, 8, 34, 36) rest on a cover sheet (2) and that the cover (12) of a spring element (24), which on the one hand on the bracket (7, 8, 34, 36) and on the other hand engages the lid (12) against the lid arch (2) be charged. Apparatus according to claim 1, characterized in that the Bracket (7, 8, 34) is pivotally mounted on a shaft (6). Device according to claim 1 or 2, characterized in that that the axis of rotation of the shaft (6) is at least 200 mm to the side and at least 150 mm above the nearest cover (12) is arranged. Device according to one of claims 1 to 3, characterized by two brackets (7, 8) which cross over each other. Apparatus according to claim 4, characterized in that the two brackets (7, 8) on a Y-shaped support (5) pivotable are stored. Apparatus according to claim 1, characterized in that the Bracket (36) is displaceable along a linear guide (37). Apparatus according to claim 1, characterized in that the Bracket (7, 8, 34, 36) has slots (20) which are radial extend to the drum (22) and in which the cover (12), e.g. by means of a shoulder screw (21) or the like are. Device according to one of claims 1 to 7, characterized in that that the spring element (24) is a compression spring and the The cover (12) supports against tipping as soon as the cover (12) is out Contact with the cover sheet (2) comes. Apparatus according to claim 8, characterized in that the Spring element (24) is a rubber element. Device according to one of claims 1 to 9, characterized in that that the bracket (7, 8, 34, 36) by springs (13) from Reel (22) is pressed away. Device according to one of claims 1 to 9, characterized in that that the bracket (7, 8, 34) by counterweights (33) is pushed away from the drum (22). Device according to one of claims 1 to 11, characterized in that that the bracket (7, 8, 34) has a locking mechanism with a rotatable shaft (14), one rigidly attached to it Has cam (17) and with a lever (15), that the cam (17) in the closed state on one stationary bolt (18) engages, and that the bracket (7, 8, 34) by means of a rotary movement of the locking mechanism and locked. Apparatus according to claim 12, characterized by a Lever assigned initiator (27), through which the proper Close the bracket (7, 8, 34) and lock the lever (15) is checked. Device according to one of claims 1 to 13, characterized in that that between the stationary lids an elastic one Seal (31, 32) is provided, and that this seal (32) using a U-shaped mounting bracket (29) and clamping screws (30) is clamped to a cover (12).

Images