CN216324301U - Device for straightening rolled material - Google Patents

Abstract

The utility model relates to a flexible material operating device, in particular to a device for straightening rolled materials, which comprises a straightening roller, wherein a protruded elastic element is arranged on the cylindrical wall of the straightening roller, wherein the apparatus comprises a work table and a trolley which unwinds the rolled material placed on a work surface of the work table while the trolley moves on the work table, wherein the straightening rollers are rotatably mounted in the trolley, the elastic elements of which interact with the material during unwinding, and the work table is equipped with a pressing unit for pressing the unwound material against at least a portion of the work surface of the work table, thus providing a device for straightening rolled material, it is characterized by a simplified structural design and easy operation, ensuring the achievement of technical results including an improvement in the efficiency of straightening rolled material.

Description

Device for straightening rolled material

Technical Field

The present invention relates to a flexible material handling device, usable in the light industry, most preferably in the textile, clothing, leather and footwear industries, and in particular to a device for straightening rolled material, i.e. eliminating material wrinkles and other irregularities which make the processing of such material difficult.

Background

An apparatus for straightening rolled material is known from russian federal patent No. 2291099, the operation of which is based on the fact that: the rolled material mounted on the non-driven rolls is fed under the surface of the intermediate non-driven roll and then introduced into the gap, after which it is guided between the delivery rolls towards the successively mounted process machines. In this case, the desired gap size between the structural element and the material tension is produced by the action of an adjustable elastic element having a non-linear characteristic corresponding to the desired law of variation of the normal pressure exerted by the gap element on the material. As the material unwinds from the roller, the latter reduces in weight, the elastic element reduces the cross-section of the gap through mechanical interaction and automatically increases the normal pressure exerted on the material, stabilizing its tension. The device is therefore characterized by a rather complex structural design, which complicates its operation and maintenance.

An apparatus for straightening rolled material described in soviet union author certification number 1493707 is known. The device comprises a fixed flexible beam with longitudinal notches, said beam being mounted on a spherical bearing, said beam comprising a self-sheath on the ring and the bearing. In the bending mechanism, a screw pair is provided, comprising a screw movable along a thread formed at the end of the beam, and an actuating element in the form of a set of flexible plates stacked in parallel in a longitudinal slot. The ends of the screws abut the ends of the plates, the axes of which extend parallel to the axis of the beam and are offset towards the plates. The spherical bearing is fixed in the bracket. Due to the moving web of material running over the shorter forming arc of the straightening roll and the longer arc running due to the adhesion between the jacket surface and the straightening web, the wrinkles are straightened out, in which case forces are generated which stretch the web in its direction of movement and eliminate the wrinkles.

The disadvantage of said device is also the complexity of its structural design. Furthermore, wrinkles are straightened only when the material is unwound from the roll, and wrinkles are not straightened when the material is wound, but instead wrinkles occur, wherein the width of the straightened material is limited by the width of the straightening roll.

The closest prior art to the present invention is the device for straightening material described in european application No. 1234907, whose operating principle is based on the material passing between a solid plane and a straightening roll, whose cylindrical wall is provided with a plurality of radially protruding elastic elements, in particular in the form of fingers made of a polymer material. As the material passes, the fingertips move, acting on the irregularities of the material being straightened and removing the folds, and then straightening due to their elasticity. The fingers may be arranged on the roller in rows or in a spiral at different intervals.

SUMMERY OF THE UTILITY MODEL

Although said structure considerably reduces the drawbacks of other prior art devices having the same purpose, it is not possible to fix the straightening effect by means of it. Thus, irregularities may appear again after straightening.

The utility model aims to produce a device for straightening and rolling materials of this type, which is characterized by simple structural design and convenient operation, and can ensure the achievement of technical achievements, including the improvement of the efficiency of straightening and rolling materials.

The problem is solved by providing a device for straightening a rolled material, comprising a straightening roll, the cylindrical wall of which has a protruding elastic element, wherein the device further comprises a table and a trolley for unrolling the rolled material placed on the working surface of the table when the trolley is moved over the table, wherein the straightening roll is rotatably mounted in the trolley, the elastic element of which interacts with the material during unrolling, and the table is provided with a pressing unit for pressing the unrolled material against at least a part of the working surface of the table.

The rolled material placed in the trolley is thus transported between the work surface of the table and the straightening rolls and, as the trolley moves, transmitted between said surface and the elastic elements of the straightening rolls, a tension-induced force is applied to the elastic elements, in which case the elastic elements are displaced so as to act on the irregularities of the material and straighten it. Meanwhile, a pressing unit for pressing the unwound material (which may be designed, for example, as a vacuum press or a static voltage press) is used to press the material to the working surface of the table, fixing the effect obtained due to the interaction of the material with the elastic member of the straightening roll, thereby significantly improving the straightening efficiency. It will also be seen from the description that the claimed device is easy to operate.

Furthermore, the design of the device is significantly simplified compared to similar devices: the desired effect is achieved without the need for additional structural elements, such as conveyor rolls, elastic elements for adjusting the size of the gap, etc., by combining a table designed for pressing the unwound material into its working surface with a straightening roll of some type mounted on a trolley movable over the working surface of the table.

Preferably, the press unit is designed for adjusting the pressing force. For example, when vacuum pressing is used (in which case the pressing means is a pneumatic system, creating a negative pressure under the material being straightened), this is achieved by adjusting the suction force.

In the most preferred embodiment of the claimed invention, the resilient elements of the straightening roll are designed in the form of lugs of the same length, evenly distributed over the surface of the straightening roll and directed from the middle of the roll to its edges, wherein the resilient elements in different directions form the same angle with the roll axis. Alternatively, the angle of inclination between the elastic element and the roller axis may vary, for example from 90 ° in the middle of the roller to 45 ° at the edge. This design of the rolls improves the efficiency of material straightening and also provides the tentering effect of the latter. The above does not exclude embodiments in which the resilient elements are designed as fingers extending radially from the cylindrical wall of the roller, for example.

In a preferred embodiment, the straightening roll comprises a cross beam and a set of hollow cylindrical elements (the walls of which have elastic elements projecting from the outside) placed on the cross beam and detachably connected to each other. For example, the cylindrical elements may be designed to be inserted into each other when placed on the beam, thereby ensuring that a single assembled variable-size straightening roll is created, depending on the length of the beam and the number of cylindrical elements placed on the beam. This structural design of the roll allows it to be adapted to straighten materials of various widths. For example, the resilient element may be connected to the wall of the cylindrical element in any suitable manner, or it may be integral with the cylindrical element.

Most preferably, the trolley is designed to wind the material unwound on the work surface of the worktable into a roll when the trolley moves over the worktable in a direction opposite to the unwinding direction. In this case, the elastic element of the straightening roll is displaced in the same way as during unwinding, but in the opposite direction, so as to act on the irregularities of the material. Therefore, when the material is unwound from and wound onto the roll, the straightening effect is achieved, thereby further improving the straightening efficiency.

Most preferably, the claimed apparatus operates automatically through the use of an automated electronic control system.

The claimed device can also be equipped with means for performing other operations than straightening, using materials well known to those skilled in the art, which can also be performed automatically.

Drawings

The structure of the claimed device is explained in more detail using the drawing, in which

FIG. 1 is a partial general view of an apparatus for straightening rolled materials according to one of the preferred embodiments of the present invention;

FIG. 2 is a schematic longitudinal and cross-sectional view of a straightening roll according to one of the preferred embodiments of the present invention;

FIG. 3 is a schematic view illustrating movement of an elastic member of a straightening roll under a material action according to one of preferred embodiments of the present invention;

fig. 4 to 8 are schematic side views of an apparatus for straightening rolled materials according to one of the preferred embodiments of the present invention at various stages of its operation.

Detailed Description

Figure 1 shows a partial general view of a preferred embodiment of the claimed device for straightening rolled material. The apparatus comprises a table 1, the table 1 being equipped with a pneumatic system (not shown in the figures under consideration) for vacuum pressing a rolled material on a work surface of the table 1; a trolley 2, which spreads the rolled material on the working surface of the table 1 (in the figure considered, the trolley 2 is empty, i.e. there is no rolled material therein) while it moves along the guide rails above the table 1; and a straightening roll 3 installed in the carriage 2. Fig. 1 shows that the straightening roll 3 is mounted to be movable up and down. The downward and upward positions of the roller 3 are its active and inactive positions, respectively.

Fig. 2 is a schematic longitudinal section and a cross-sectional view of a straightening roll 3 region according to one of the preferred embodiments of the utility model. The straightening roll 3 comprises a plurality of cylindrical elements 4 placed on a beam 5, the walls of which have elastic elements 6 projecting from the outside. The figure considered shows that the elastic element 6 is integral with the wall of the cylindrical element 4.

Fig. 2 also shows that the elastic elements 6 are designed in the form of lugs of the same length, evenly distributed over the surface of the straightening roll 3 and directed from the middle thereof to the edges. The inclination angle between the elastic element 6 and the straightening roll 3 axis is the same.

The straightening roll 3 is described in relation to the table 1 and the material 7.

Fig. 3 is a schematic diagram showing the elastic elements 6 of the straightening roll 3 (not shown) moving through Δ h and Δ l when acted upon by the force P1 of the material 7 being spread on the working surface of the table 1.

Fig. 4-7 show schematic side views of an apparatus for straightening rolled material according to one of the preferred embodiments of the present invention at various stages of its operation. As shown in the above figures, reference numeral 1 denotes a work table, reference numeral 2 denotes a dolly, reference numeral 3 denotes a straightening roll, and reference numeral 7 denotes a material (rolled and unwound). Reference numeral 8 denotes the trolley 2 actuator in the figure under consideration. The arrow indicates the direction of rotation or movement of the corresponding structural element and the dashed line indicates the new position of the structural element relative to the previous element after movement.

The operation of the claimed apparatus is described below with reference to the accompanying drawings.

Fig. 4 shows the initial position of the straightening roll 3 mounted in the trolley 2. In this position, the straightening rollers 3 are up, i.e. in their rest position, the trolley 2 is not moved, and the pneumatic system for vacuum pressing the material on the working surface of the table 1 is not active.

When receiving the operation start signal, the actuator 8 of the trolley 2 is opened, thereby moving along the guide rail to the position of the rolled material 7 wound on the reel (see fig. 5). In this case, the straightening roll 3 is held in its upward position.

When the trolley 2 approaches the reel containing the rolled material 7, the reel is transferred into the trolley 2 by means of the manipulator, after which the straightening rollers 3 are moved downwards, i.e. set to their working position (see fig. 6).

Subsequently, the trolley 2 carrying the reel and the rolled material 7 is moved in the opposite direction, unwinding the material 7 and straightening by the straightening rolls 3, with the straightening rolls 3 in the downward position and moving due to friction when the elastic elements 6 contact the material 7 (see fig. 7).

In this case, the material 7 exerts a force P (P ═ constant) on the elastic element 6, which is caused by the tension P of the material 7, and the elastic element 6 subjected to said force bends Δ h, displaces Δ l, tending to straighten the material 7 (see fig. 3).

During the straightening the material 7 runs over the next elastic element 6, accumulating the straightening effect. Furthermore, at this stage, the pneumatic system is activated, vacuum pressing the material 7 on the work surface of the table 1, to fix the straightening effect.

After the straightening is completed, the carriage 2 carrying the reel is moved in the direction opposite to the unwinding direction, whereby the material 7 unwound on the work surface of the table 1 is wound into a roll (i.e. the material 7 is wound onto the reel), the straightening roll 3 still being in the downward position, as shown in fig. 8. Thus, a process similar to that described above with reference to fig. 3 is actuated upon winding.

After the winding is completed, the straightening roll 3 is moved upwards (i.e. set to its rest position) and the reel wound with straightening material 7 is removed from the trolley 2 by means of the manipulator.

Thus, an apparatus for straightening rolled material is provided, which is characterized by a simplified structural design and easy operation, ensuring achievement of technical results including an improvement in the efficiency of straightening rolled material.

Claims (9)

1. An apparatus for straightening rolled material comprising

A straightening roller, wherein the cylindrical wall of the straightening roller is provided with a protruding elastic element,

the device comprises a work table and a trolley which unwinds the rolled material placed on the work surface of the work table while the trolley moves on the work table,

wherein the straightening rollers are rotatably mounted in the trolley, the elastic elements of which interact with the material during unwinding, and the worktable is equipped with a pressing unit for pressing the unwound material against at least a portion of the working surface of the worktable.

2. The device according to claim 1, characterized in that the press unit is designed for vacuum pressing or electrostatic pressing.

3. The device according to claim 1, characterized in that the press unit is designed for adjusting the press force.

4. Device as claimed in claim 1, characterized in that the elastic element of the straightening roller is designed in the form of a lug.

5. Device as claimed in claim 1, characterized in that the elastic elements of the straightening rollers have the same length.

6. Device as claimed in claim 1, characterized in that the elastic elements are evenly distributed over the surface of the straightening roll.

7. Device as claimed in claim 1, characterized in that the elastic element of the straightening roller is directed from the middle of the roller to its edge.

8. The apparatus according to claim 1, wherein the straightening roll comprises a beam and a set of hollow cylindrical elements placed on the beam and detachably connected to each other.

9. The apparatus according to claim 1, wherein the trolley is designed to roll the material unwound on the working surface of the worktable into a roll when the trolley moves over the worktable in a direction opposite to the unwinding direction.

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