JPH0360934B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention guides a separated fleece through two delivery rollers of a carding machine and forms a card sliver which is later stored in a can of the carding machine. Relating to a device for

[Conventional technology]

A card-fleece guide device is already known, for example from French patent no. 2384041 filed in the name of Trutzschler, dated March 16, 1978, which device is connected and installed in the immediate vicinity of the delivery roller. and has several guide members, such as flaps, with hollow guide surfaces arranged perpendicular to the direction of movement of the fleece, which guide surfaces almost completely surround the delivery rollers of the carding machine. There is. At least one of the several guide members has an exit hole for the card sliver formed when the fleece is collected.

[Problem that the invention seeks to solve]

However, in these known devices, the disadvantage of the concave surface surrounding the guide flap is that the air dynamically carried along the fleece cannot escape from the outlet of the delivery roller; The fleece expands, making it difficult for card slivers to form. On the other hand, if the fleece breaks, the sliver generation has to be started manually.

The object of the invention is to overcome these two disadvantages.

Research by the present applicant has already revealed that it is advantageous to take up the fiber fleece that has left the drawing machine and turn it into rovings using transverse guide members.
This transverse guide member, unlike known devices for guiding and forming rovings, which usually resembles a funnel or has a concave surface, is provided with an exit hole through which the roving exits, with a hole in the center. It consists of an open, nearly flat sheet of metal. This guide device with transverse plates is described in French patent application no. 7924188 filed by the applicant on September 28, 1979.

[Means for solving problems]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is a device consisting of several articulated flaps for guiding the fleece past the two delivery rollers of a carding machine and forming a card sliver.
Its surfaces are oriented approximately perpendicular to the plane of the carded fleece, one of which is provided with an exit guide hole through which the card sliver exits, and the device is characterized in that the guiding surface of the flap is approximately flat and that this The device incorporates another approximately flat movable flap which temporarily forms a bed for receiving the carded fleece once sliver production begins again;
This floor flap is articulated around a horizontal axis parallel to the axis of the delivery roller.

[Effect]

As mentioned above, the device according to the invention provides a guide member or an articulated flap with a substantially flat, unrecessed surface, which surface is oriented perpendicularly to the plane of the fleece and does not surround the delivery roller. It has been found that a wide range of carded fleece can be used and made into slivers. This allows the air carried by the fleece to escape. Furthermore, the retractable flap, which is retracted when the carging machine is in normal operating conditions, provides a bed for receiving the fleece once the sliver has been produced, thereby automatically restarting the sliver production without any manual intervention. You can start.

According to a preferred embodiment, the device comprises first and second lateral flaps and a third middle flap, the first and second flaps being connected to the carging machine by means of their respective ends near the edge of the delivery roller. The third middle flap is connected to a vertically fixed shaft integral with the frame, and the third middle flap is connected to each middle end of the first and second flaps, and is provided with a card sliver guide hole.

The other flap, the floor flap, is connected to the lower part of the middle flap by a horizontal axis, and according to the mechanical connection of these two parts, the third
The card sliver guide hole in the flap separates from the delivery roller at the same time as the floor flap is formed to support the fleece at the beginning of sliver production, but when the carding machine is in operation, the fleece The floor flap is adapted to approach the delivery roller at the same time as it retracts downward, so that the air carried by and agitated by the delivery roller can freely pass through.

〔Example〕

BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be more clearly understood from a consideration of the detailed description hereinafter presented and the accompanying drawings which show, by way of non-limiting example, embodiments of the invention.

1, 2 and 3 show the known essential parts of a carging machine, between which the device according to the invention is interposed. These elements conventionally consist of the delivery rollers 2, 2' of a carding machine which supplies the carded fleece 4. Once generated, the card sliver 6 passes through a capacitor 8,
At the exit of the condenser, the sliver 6 is captured by burnishing rollers 10, 10', where it becomes a burnished sliver 6' and is directed to a can (not shown) of a carging machine.

The device includes first and second lateral flaps 12, 14, each flap being connected to the carging machine frame 19.
are connected to vertical fixed shafts 16, 18 which are integral with the carging machine, so that these flaps can be pivoted in the downstream direction of the carging machine to positions 12', indicated by dashed lines in FIG.
It can reach up to 14'.

Flap 1 on the opposite side of the fixed axes 16, 18
The ends 20, 22 of the flaps 2, 14 are connected to each other by a third or middle flap 24, in which both ends are connected to a vertical axis joint 26.
This is because they are connected by (joint 2
6 will be explained in more detail in connection with FIG. ).

The middle flap 24 is provided with an exit hole for the card sliver, to which a substantially conical slide guide 28 facing the capacitor 8 is connected. In the retracted state 12', 14' of the flaps 12, 14, the middle flap 24 and the sliver guide 28 are in the positions 24', 28' indicated by broken lines in FIG.

The three flaps 12, 14, 24 are elongated rectangular flaps having a substantially flat surface 30 oriented substantially perpendicular to the plane of the fleece 4. The shape of this surface for flap 24 can be seen in FIG. 2, and the other two flaps 12, 14 are generally of the same shape. These three flaps may be provided with short curved rims 32 (FIG. 3), which serve above all to make them rigid. This is because these flaps are only slightly high (below the diameter of the rollers 2, 2') and do not surround these rollers.

The device of the invention also has another flat flap 3.
4, i.e. a horizontal axis 36 in which the floor flap is incorporated and which is parallel to the axis XX of the delivery rollers 2, 2'.
It is attached so that it can rotate freely around the . As best seen in FIGS. 2 and 3, the shaft 36 is supported by the lower portion of the middle flap 24.

When viewed in plan, the floor flap 34 has an approximately elongated trapezoidal shape, as can be seen in FIG.
4' and 24'.

At each line on the side of the carger, the flap 34 supports a rod 38 or similar slide member as a runway, which slide member has a substantially vertical sliding surface 4 integral with the frame 19 of the carrer.
0 (see Figures 1 and 3).

The floor flap 34 pivots about an axis 36 from a substantially vertical retracted state (FIG. 2) to a raised state 3.
4' (FIG. 3), and when a sliver begins to be produced in this state, the fleece 4 is collected and supported.

Floor flap 34 from this one state to the other
The rotation of the flap may be controlled by hand or by means of two hydraulic jacks 42, preferably mounted at each end of said flap, the fixing points of which are connected to the frame 19 of the carging machine. .

The device according to the invention also incorporates an air blowing nozzle (not shown) for blowing air in the direction of the arrow 44 (FIG. 1) approximately parallel to the flaps 12, 14, which are connected to a conical sliver. It is better to incorporate it into the guide 28. Since the condenser 8 is provided with a suction device as in the prior art, the sliver guided by the sliver guide 28 is absorbed by the condenser.

The operating modes of this device will be explained. When the carging machine is operating normally at production speed,
Each member is in the position shown in FIG.
It is located at the position indicated by the dashed line in the figure. The middle flap 24 is located at a distance d away from the delivery roller,
The floor flap 34 is folded downwards.
The fleece 4 meets the flat surfaces 30 of the flaps 12, 14, 24 and is guided by the air blow 44 towards the holes in the sliver guide 28.

The flaps 12, 14, 24 are substantially flat;
Since it is not arranged against the rollers 2, 2' and does not surround these rollers, and also because the floor flap 34 is retracted downwards, there are The air can escape vertically without any hindrance through wide passages. The collection of the fleece is therefore not hindered by local turbulence or overpressure, and this therefore reduces the frequency of fleece breakage and makes it possible to produce the fleece at high speeds.

Furthermore, it can be seen in FIG. 2 that in this state there is a significant gap E between the outlet of the sliver guide 28 and the inlet of the condenser 8. This gap helps the air dynamically carried by the fleece to escape, resulting in the formation of a sliver, thus preventing it from swelling and facilitating its entry into the capacitor.

When the carging machine is started, or when the fleece or sliver is torn, the jack 40 is moved manually or automatically to extend into the position shown in FIG. 3, depending on the detection of a break.

The floor flap 34 thus rises to a position 34' in which it can receive and support the fleece 4. At this point, the cardin machine's feed member, dosing pad, and feed roller rotate slowly.

While the flap 34 is in the upright state, the slide member 38 supported by the flap 34 is forced to follow the linear sliding surface 40, so the flap 24 supports the shaft 36 for rotating the flap 34. is driven to the right (Figures 2 and 3).
), distance D from rollers 2, 2' (longer than distance d)
I can be up to. Due to this retraction of the flaps 24, the transverse flaps 12, 14 are pivoted into an inclined position 12', 14' (FIG. 1), so that the fleece is aligned along the transverse flaps at the beginning of sliver production. Can be easily held and slid. In order for flap 24 to retract to position 24', sliver guide 28 approaches the inlet of capacitor 8 (going to position 28' in FIG. 3), and the gap e between these two members is less than E. This facilitates the initiation of sliver production and also facilitates the sliver 6 being sucked into the capacitor 8. At this point, due to the low production rate, it is not necessary to evacuate a significant amount of air between the guide 28 and the condenser 8, as in normal speed operation.

The fleece does not fall down due to the floor flaps 34, is guided by the inclined flaps 12, 14 and the air blow 44, and is strongly sucked into the capacitor 8, so that the fleece does not need to be placed on the card without any manual intervention. Sliver generation can be restarted automatically, but hitherto it has not been possible to generate such a sliver.

As the sliver begins to form inside the capacitor,
The carging machine returns to its production speed, but at the same time controls the jack 42 to remove the floor flap 34.
to the lower position (Fig. 2) and flap 1
2, 14, 24 from the rollers 2, 2',
Allow free passage of air carried by the fleece and delivery rollers. As a result of this movement, the sliver guide 28 moves a distance E (FIG. 2) away from the inlet of the capacitor 8 and operates at normal speed.

Furthermore, in the position shown in FIG.
Since the distance between and rollers 2 and 2' is D,
Fleece is generated and gathered in the sliver guide 28
It is easy to see that the sliver is passing through the carving machine and to check whether the sliver has started to form properly in the carging machine. Even in normal operating conditions, the gap d is sufficient to monitor the production status and the condition of the fleece. This is because the guide flaps do not surround the rollers 2, 2'.

FIG. 4 shows, by way of example, an embodiment of a device 26 for connecting the transverse flap 12 to the middle flap 24.

This articulation device may consist of a first fork 46 attached to the transverse flap 12 and supporting an axle 48, and a second fork 50 attached to the middle flap 24 and supporting an axle 52.

The axes 48 and 52 are connected by at least one link 54 connecting the two flaps, so that when the middle flap is translated by the pivot axis 36 of the flap 34 in accordance with the arrow F' It can be rotated around the axis 16 in the direction of .

Of course, the middle flap 24 and the horizontal flap 12-
A deformable connection device with 14, for example a flexible spring plate or other similar deformable elastic member connection device, may be used.

〔effect〕

As mentioned above, in the present invention, the carded fleece is guided and accumulated into a sliver by the side flaps and middle flaps at the outlet of the delivery roller of the carding machine, and the sliver begins to be produced at a separate floor flap. Since the fleece is sometimes picked up, it has the remarkable effect that the generation of card slivers can be started automatically without manual operation.

[Brief explanation of drawings]

1 is a plan view of the device according to the invention, FIGS. 2 and 3 are cross-sectional views of the device in the vertical plane Y of FIG. 1, and FIG. 4 is a detail showing the connection of the transverse and middle flaps. It is a diagram. 2, 2'...Feed roller, 4...Fleece, 6,
6'...Sliver, 8...Capacitor, 12,1
4...Horizontal flap, 19...Frame, 24...
Middle flap, 28...Sliver guide, 34...
floor flap.

Claims (1)

Claims: 1 consisting of several articulated flaps, the surfaces of which are oriented approximately perpendicular to the plane of the carded fleece, one of which is provided with an exit hole for guiding the carded sliver; In a device for forming fleece guides and slivers in a carging machine after exiting the two delivery rollers of the carging machine, the guiding surfaces 3 of the flaps 12, 14, 24
0 is substantially flat and the device incorporates another substantially flat movable flap 34 which temporarily forms a floor for the carded fleece 4 once the sliver 6 begins to form;
Fleece guide and sliver forming device in a carging machine, characterized in that the fleece guide and sliver forming device are connected around a horizontal axis 36 parallel to the axis XX of the delivery rollers 2, 2'. 2. The articulated flaps consist of two transverse flaps 12, 14, each end of which is rotatably mounted on a fixed vertical shaft 16, 18 integral with the carging machine frame 19; It consists of an intermediate flap 24 connected to the ends 20, 22 by a vertical axis articulation device 26, which is provided with a sliver outlet hole connected to a sliver guide 28 aligned with the sliver condenser 8 of the carging machine. Fleece guide and sliver forming device in a carging machine according to claim 1, characterized in that the fleece guide and sliver forming device are sagging. 3. Fleece guide and sliver forming device in a carging machine according to claim 2, characterized in that the pivot axis 36 of the floor flap 34 is carried by the lower part of the middle flap 24. 4. Control means 40 are connected to the floor-type flap 34 for bringing this flap into a raised position 34' for starting fleece collection, or for moving it away from the feed roller 2'. Device for forming fleece guides and slivers in a carging machine according to any one of claims 1 to 3, characterized in that it is designed to go into a retracted state (34) of a carging machine. 5 The flap 34 moves the guide flaps 12, 14, 24 by raising the floor flap.
Claim 3 or 4 is characterized in that it is provided with a guide device that causes the rollers to move a distance D away from the delivery rollers 2, 2' and vice versa.
A device for forming fleece guides and slivers in a carging machine as described in paragraphs. 6. According to claim 5, the floor flap 34 carries at its ends a mechanical guide member 38 which slides on a substantially vertical sliding surface 40 which is integral with the carging machine frame 19. Fleece guiding and sliver forming equipment in carging machines. 7. Fleece in a carging machine according to claim 5 or 6, characterized in that by raising the floor flap the sliver guide 28 approaches the condenser by a distance e and vice versa. A device for forming guides and slivers. 8. Claim 2, characterized in that the blowing means blows airflows 44, 44 substantially parallel to the flaps 12, 14 toward the middle flap 24.
A device for forming a fleece guide and sliver in a carging machine according to any one of items 7 to 8. 9. Fleece guide in a carging machine according to any one of claims 2 to 8, characterized in that the height of the flaps 12, 14, 24 is smaller than the diameter of the delivery rollers 2, 2'. and sliver forming equipment. 10 In the normal operating state of the carging machine, the flaps 12, 14, 24 are at a distance from the delivery rollers 2, 2', the distance d being carried by the fleece 4 and the delivery rollers 2, 2'. Fleece guide and sliver forming device in a carging machine according to any one of claims 2 to 9, characterized in that the spacing is such that air can escape freely. 11 Each side flap 12, 14 and middle flap 24
Claims characterized in that the direct device consists of two vertical shafts 48, 52 integral with the flaps 12, 14 and 24 and at least one connecting link 54 connected to these vertical shafts. A device for forming a fleece guide and sliver in a carging machine according to any one of items 2 to 10. 12 Each side flap 12, 14 and middle flap 24
12. Fleece guide and sliver forming device in a carging machine as claimed in claim 11, characterized in that the connecting device with the shaft consists of a spring plate or other elastic connection instead of a shaft and a link.