CN110892101A

CN110892101A - Carding machine with adjusting device for carding gap

Info

Publication number: CN110892101A
Application number: CN201880036434.3A
Authority: CN
Inventors: 迪特玛·弗洛克; 亚历山大·霍恩
Original assignee: Truetzschler GmbH and Co KG
Current assignee: Trutschler Group Europe
Priority date: 2017-08-18
Filing date: 2018-07-12
Publication date: 2020-03-17
Anticipated expiration: 2038-07-12
Also published as: CN110892101B; WO2019034339A1; EP3669020A1; DE102017118884A1; EP3669020B1

Abstract

The invention relates to a carding machine having a device for adjusting the carding gap between a revolving carding element (14) and a cylinder (4), wherein the carding element (14) interacts with at least one arcuate sliding plate (18) which is arranged on the side panel on both sides of the cylinder (4), wherein each sliding plate (18) has at least one web (20) which is designed in the form of a wedge and which is arranged displaceably on wedge-shaped carrier elements (19) which are oriented toward one another, wherein the web (20) is adjustable and fixable on the carrier elements (19) by means of a device. The invention is characterized in that the device can be fixed on the lateral end side of the carrier element (19).

Description

Carding machine with adjusting device for carding gap

Technical Field

The invention relates to a carding machine having a device for adjusting the carding gap between a revolving carding element and a cylinder, wherein the carding element interacts with at least one arcuate sliding plate which is arranged on the side panel on both sides of the cylinder, wherein each sliding plate has at least one web which is designed in the form of a wedge and which is arranged movably on wedge-shaped carrier elements which are oriented toward one another, wherein the web is adjustable and fixable on the carrier elements by means of a device.

Background

With carding machines of today's configuration, for the carding process, a flat bar with a moving clothing (revolving flat) and/or a stationary carding element with an all-steel clothing is used as carding element. The cover bar has pins on its end side, which on the one hand cooperate with the drive belt for the encircling of the cover bar and on the other hand slide on sliding plates, which are arranged on both sides of the carding cylinder and by means of which the carding gap can be adjusted. The sliding plate can be adjusted by means of radial adjustment means in such a way that the carding nip is increased or decreased. For this purpose, adjusting drives or mechanical devices are used, by means of which the radius of the slide plate can be increased or decreased. Alternatively or additionally to this, the sliding plate is mounted in a wedge-shaped manner in the circumferential direction of the carding cylinder, as a result of which small and precise radius changes of the sliding plate are brought about by a large adjustment path. The device can also be operated mechanically or by a motor. In this case, the coarse adjustment of the slide plate is effected by means of a plurality of radially arranged adjustment spindles, whereas the fine adjustment is effected by means of wedge-shaped adjustment devices which act in the circumferential direction of the carding cylinder.

Since, as is the case today, the adjustment of the carding nip and thus of the slide plate takes place almost exclusively in the stationary state of the machine after the card clothing has been changed, it is sufficient for most applications to adjust the slide plate mechanically and manually by means of a wedge system.

Since the carding machine now operates with a very narrow carding gap from 1/100mm to 5/100mm, it is desirable that the surface of the slide bar on which the pins of the flat bar slide is a precisely rounded profile. This is not in accordance with practice, however, since the surface of the slide plate in the region of the point of action of the adjusting spindle has projections which deviate from a precisely circular shape. Thus, a greater combing distance is produced in this position, or a smaller combing distance is produced as a function of the adjustment between the points of action of the adjusting spindles.

DE19831139B4 describes a slide plate which is adjustable in radius by means of a movable wedge system. A groove is added to the interior of the slide plate, in which groove a gear drive is arranged. The gear drives require a relatively large installation space which weakens the strength of the slide plate and thus leads to additional deviations from the exact pitch circle shape.

Disclosure of Invention

The aim of the invention is to improve an adjusting device on a sliding plate of a carding machine, by means of which precise adjustability can be achieved and existing systems can be improved.

This object is achieved according to the preamble of claim 1 and the corresponding features of the characterizing portion. Advantageous further developments of the invention are specified in the dependent claims.

According to the invention, the carding machine has a device for adjusting the carding gap between the revolving carding element and the cylinder, wherein the carding element interacts with at least one arcuate sliding plate which is arranged on the side panel on both sides of the cylinder, wherein each sliding plate has at least one web which is designed in the form of a wedge and which is arranged movably on wedge-shaped carrier elements which are oriented toward one another, wherein the web is adjustable and fixable on the carrier elements by means of the device.

The invention comprises the technical teaching that by fastening the device on the lateral end sides of the carrier element, it is possible to construct a sliding plate with a higher moment of resistance and thus to bring the sliding surface traveled by the comb element closer to the ideal arcuate contour. In contrast to the prior art, the main functional elements are retrofitted onto the outer side of the slide plate so that the cross section of the slide plate is not excessively weakened.

Preferably, the device has two guide portions arranged crosswise to one another, wherein one guide portion is designed as an arcuate slot in which the guide element is movably arranged. The adjustment device and the fastening device can be retrofitted on the outer side of the sliding plate by means of guide portions arranged crosswise to one another. The guide is arranged as an arcuate slot in the side wall of the carrier element.

Drawings

Further measures which improve the invention are shown below together with a description of preferred embodiments of the invention with reference to the drawing. In the figure:

FIG. 1 is a schematic side view of a carding machine having a device according to the invention;

FIG. 2 is a schematic view of a wedge strip with an adjustment device according to the invention

FIG. 3 is a cross-sectional view through FIG. 2;

fig. 4 is a view of a spindle drive of the apparatus.

Detailed Description

Fig. 1 shows a prior art carding machine in which a fibre bundle is guided through a shaft to a feed roller 1, a feed plate 2, over a plurality of

lickerin rollers

3a,3b,3c to a cylinder 4 or main cylinder. The fibers of the fiber bundles are arranged in parallel and cleaned on the cylinder 4 by means of a row of circumferential carding elements 14 which are fixed and arranged on a revolving flat system 17. The formed loose fibers are then conveyed by the

doffers

5, 6 and a plurality of press rollers 7, 8 to a web guide element 9, which deforms the loose fibers into fiber strands by means of a flare 10, which are transferred to a subsequent processing machine or sliver can 15 by means of

stripping rollers

11, 12. The adjustment of the comb element 14 relative to the cylinder 4 (comb gap) is effected by means of a sliding plate 18, which sliding plate 18 has elements oriented toward one another in a wedge-like manner.

Fig. 2 schematically shows the principle of action of the sliding plate 18, which is fastened on the machine frame, not shown, on each side of the carding machine by means of a substantially semicircular rigid side apron.

The sliding plate 18 comprises at least one carrier element 19 and one web 20, respectively, which are arranged on both sides in the region of the side panel. The carrier element 19 is of arcuate design and can be rigidly connected to the side panel. Alternatively, the carrier element 19 can also be arranged to be adjustable on the side panel and radially adjustable by means of a plurality of adjusting means 22, wherein the carrier element 19 is slightly curved in this case. The carrier element 19 has a convex outer surface 19a and an underside 19 b. Above the carrier element 19, a web 20 is arranged which can be moved in an arcuate manner, which web 20 can be made of a slidable plastic, for example. The comb element 14, not shown here, slides on the strip 20 on the outer surface 20a with its pins projecting from the lateral end faces. The outer surface has a radius r 1. If the radius r1 is increased, the carding gap is increased, since the cover strip is guided with a greater distance from the cylinder 4. The slats 20 have a convex outer surface 20a and a concave inner surface 20 b. The concave inner surface 20b rests on the convex surface 19a, wherein the carrier element 19 and the slats 20 are both wedge-shaped and oriented obliquely to one another. The slats 20 can be guided laterally by the carrier element 19, for example by means of a raised side plate, so that the slats 20 are arranged in recesses of the carrier element 19 (fig. 3). The relative movement of the two

elements

19, 20 causes a change in the outer diameter or radius r1, thus changing the spacing between the comb element 14 and the cylinder 4 (the comb gap). The wedge system shown here has the advantage that a small change in the radius r1 is brought about by a large adjustment path arranged in the radial circumferential direction. The relative movement of the two

elements

19, 20 can be effected by manual adjustment or by an adjustment drive in the form of a motor, as will be described below.

According to fig. 2 and 3, the carrier element 19 has an arcuate guide in the area of the lateral end faces, which may be configured as an elongated hole 19c, wherein the guide extends over the circumferential surface of the carrier element 19 over an arc length of approximately 20 °. The elongated hole 19c extends with its depth only up to approximately the center of the cross section of the carrier element 19. A guide element 21 is arranged in a sliding manner inside the elongated hole 19c, which can be fixed in a clamping manner with a fixing element 23 by means of a pin 25. The guide element 21 can be configured, for example, as a slider. The guide element 21 can likewise be slightly curved in correspondence with the arcuate slot 19c in order to prevent jamming. Inside the bracket element 19, a further elongated hole 19d is arranged perpendicular to the elongated hole 19c, said elongated hole 19d extending from the outer surface 19a to the elongated hole 19 c. The

oblong holes

19c, 19d are arranged in a cross shape, which intersect in a cross section of the center of the carrier element 19 and end there, whereby the resistance torque of the carrier element 19 is only insignificantly reduced. Adjusting the carrier element 19 by means of the adjustment means 22 and thereby bending it causes little deviation of the outer surface 19a from the ideal arcuate shape, since the cross section is only insignificantly weakened. The elongated hole 19d extends over the same arc length or circumference as the elongated hole 19c and accommodates a catch 24, which is fixed in the guide element 21 and guided in the elongated hole 19 d. The driver 24 projects with its head from the outer surface 19 a. The head 24a of the driver 24 engages in the receptacle or opening of the slat 20 again without play. The head 24a of the driver 24 may be designed as a spherical segment or as a ball head. In order to reduce the deflection of the guide element 21, two drivers 24 can also be connected to and arranged at a distance from each other inside the elongated hole 19d with respect to the guide element 21.

The slats 20 can thus be moved on the carrier element 19 by loosening the fixing elements 23 and moving the guide elements 21 within the elongated holes 19 c. Thereby changing the radius r1 and thus the size of the carding nip. The carding nip can thus be changed by the slats 20 moving arcuately on the carrier elements 19, for example by changing the carding nip of 10mm by 0.025 mm. The advantage of the invention over the prior art is that the weakening of the cross section of the carrier element 19 is smaller and thus the deviation of the outer contour of the outer surface 20a from the ideal bow shape is smaller. Thus, here, the combing gap can be adjusted more precisely. The securing element 23 can be connected to the carrier element 19 in a form-fitting manner to prevent displacement. A display scale 26 is arranged on the side of the carrier element 19 below the elongated hole 19c, said scale interacting with a marking or arrow on the fastening element 23.

Alternatively to the manual adjustability, the guide element 21 can also be adjusted in a motorized manner, for example by means of a spindle drive as shown in fig. 4. The guide element 21 can be connected to a spindle nut 31, which interacts with one end of the spindle 30, by means of a pin 25 or a fastening element. The spindle nut 31 is rotatably connected with the pin 25 or the fixing element. The other end of the main shaft 30 is rotatably disposed within a bearing 32. The bearing 32 is also arranged rotatably at a fixed point, for example at the carrier element 19. Since the guide element 21 can be moved along an arc inside the elongated hole, the rotatable connection between the spindle nut 31 and the pin 25 and the rotatable arrangement of the bearing 32 ensure that the spindle does not bend as the position of the spindle 30 changes when the spindle is manipulated. The rotatable actuation of the spindle 30 can be effected by means of an electric motor drive 33 or by means of an action point of a tool for manual actuation, for example a ratchet wheel with an internal hexagonal head. The device is secured against displacement and can be secured by self-locking of the spindle 30 and/or by additional form-locking securing (for example, according to the embodiment of fig. 3).

List of reference numerals

1 feed roller

2 feeding plate

3a,3b,3c licker-in

4 Cylinder

5 doffer

6 doffer

7 compression roller

8 press roll

9 web guide element

10 horn mouth

11 strip-discharging roller

12 strip-discharging roller

13 carding element

14 combing element

15 can

17 revolving cover plate system

18 sliding plate

19 bracket element

19a outer surface

19b lower side

19c long hole

19d long hole

20 lath

20a outer surface

20b inner surface

21 guide element

22 regulating device

23 fixing element

24 driving part

24a head

25 pin

26 display scale

30 spindle

31 spindle nut

32 bearing

33 driver

r1 radius

Claims

1. A carding machine with a device for adjusting the carding nip between a revolving carding element (14) and a cylinder (4), wherein the carding element (14) interacts with at least one arcuate sliding plate (18) which is arranged on the side panel on both sides of the cylinder (4), wherein each sliding plate (18) has at least one web (20) which is designed in the form of a wedge and which is arranged displaceably on wedge-shaped carrier elements (19) oriented toward one another, wherein the web (20) is adjustable and fixable on the carrier elements (19) by means of a device, characterized in that the device is fixable on the end side of the carrier elements (19).

2. A carding machine as in claim 1, characterised in that the device has two guides arranged crosswise to each other, wherein one guide is configured as an arcuate slot (19c) in which the guide element (21) is movably arranged.

3. A carding machine as in claim 2, characterised in that the other guide is configured as a long hole (19d) arranged along the outer surface (19a) of the carrier element (19).

4. A carding machine as in claim 2, characterised in that the guide element (21) is of arcuate configuration.

5. A carding machine as in claim 2, characterised in that said device can be fixed by means of a fixing element (23) directly or indirectly connected to the guide element (21).

6. A carding machine as in any of the preceding claims 2 to 5, characterised in that the position of the guide rail element (21) is transmitted to the slats (20) by means of at least one driver (24).

7. A carding machine as in claim 6, characterised in that said at least one driver (24) is guided by a slot (19 d).

8. A carding machine as in any of claims 6 to 7, characterised in that said driver (24) has a head (24a) which cooperates with the blade (20).

9. A carding machine as in any of the preceding claims, characterised in that the adjustability of the device is achieved by means of a spindle drive or an adjusting drive.

10. A carding machine as in any of the preceding claims 2 to 7, characterised in that the elongated holes (19c, 19d) intersect substantially in the centre of the cross section of the carrier element (19) and terminate there.