CN215207642U - Tension adjusting device - Google Patents

Abstract

The utility model provides a tension adjusting device. The tension adjusting device comprises a bracket, a winding roller, a first roller, a second roller, a driving piece, a first compression roller, a second compression roller and a linkage mechanism; the first roller and the second roller are arranged on the bracket at intervals and are used for supporting materials; the driving piece is arranged on the bracket and can drive the winding roller to rotate, so that the material sequentially passes through the first roller and the second roller and is wound on the periphery of the winding roller; the first compression roller is used for abutting against the materials between the first rolling roller and the second rolling roller, the second compression roller is used for pressing the materials on the rolling roller, and the first compression roller and the second compression roller are both connected with the linkage mechanism. The utility model provides a tension adjusting device can realize the tapering tension control of rolling process, and simple structure, and is with low costs.

Description

Tension adjusting device

Technical Field

The utility model relates to a material is received and is unreeled equipment technical field, especially relates to a tension adjusting device.

Background

For film materials, in the winding process of the materials, along with the increase of the winding diameter of the winding, the tension of the winding needs to be gradually reduced so as to ensure the winding quality of the materials, and the process of controlling the tension to be reduced along with the increase of the winding diameter in the winding process is generally called taper tension control or taper control. Some existing devices for controlling taper tension generally need to use high-precision sensors and apply complex algorithms, and are also high in cost.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a tension adjusting device, this tension adjusting device can realize the tapering tension control of rolling process, and simple structure, and is with low costs.

According to the utility model discloses a tension adjusting device, include: a support; the winding roller is arranged on the bracket; a first roller; the first roller and the second roller are arranged on the bracket at intervals and are used for supporting the material, and the first roller and the second roller are in contact with the same side of the material; the driving piece is arranged on the bracket and connected with the winding roller, and the driving piece can drive the winding roller to rotate so that the material sequentially passes through the first roller and the second roller and is wound on the periphery of the winding roller; the first pressing roller is used for abutting against the material between the first roller and the second roller, and one side of the material, which is back to the first roller, is in contact with the first pressing roller; the second pressing roller is used for pressing and holding the material on the winding roller; the linkage mechanism, first compression roller with the second compression roller all with the linkage mechanism is connected, and follows the second compression roller is kept away from the wind-up roll, first compression roller is towards keeping away from first cross the roller with the direction motion of roller is crossed to the second, follows the second compression roller is close to the wind-up roll, first compression roller is towards being close to first cross the roller with the direction motion of roller is crossed to the second.

According to the utility model discloses tension adjusting device has following beneficial effect at least: along with the winding, the winding diameter of the material is gradually increased, and a second pressing roller for pressing and holding the material moves towards the direction far away from the center of the winding roller; in the process, the first pressing roller moves along with the movement of the second pressing roller, and the first pressing roller moves towards the direction away from the first roller and the second roller simultaneously so as to reduce the acting force exerted on the material by the first pressing roller, reduce the tension of the material and realize the winding taper tension control. The tension adjusting device provided by the utility model can reduce the acting force applied on the material along with the increase of the winding diameter of the material, thereby changing the tension of the material and realizing the taper tension control in the winding process; and the device has simple structure, does not need a high-precision sensor and a complex control algorithm, and has lower cost.

According to some embodiments of the invention, the linkage mechanism comprises: the sliding rail is arranged on the bracket; the sliding piece is mounted on the sliding rail in a sliding mode; one end of the first connecting rod is connected with the sliding piece, and the other end of the first connecting rod is connected with the first pressing roller; and one end of the second connecting rod is connected with the sliding piece, and the other end of the second connecting rod is connected with the second pressing roller.

According to some embodiments of the present invention, the tension adjusting device further comprises a first driving cylinder, the first driving cylinder comprises a first cylinder body and a first piston rod, the first piston rod is slidably connected to the first cylinder body, the first cylinder body is connected to the support, and the end of the first piston rod is connected to the first pressing roller.

According to some embodiments of the utility model, the tension adjusting device still includes the second driving cylinder, the second driving cylinder includes second cylinder body and second piston rod, the second piston rod with second cylinder body sliding connection, the second cylinder body with leg joint, the tip of second piston rod with the second compression roller is connected.

According to some embodiments of the invention, the second cylinder body is connected with the support rotates.

According to some embodiments of the present invention, the second pressing roller comprises a second roller shaft and a second roller, the second roller is sleeved on the outer periphery of the second roller shaft, and the second roller can rotate around the second roller shaft; one end of the second connecting rod is rotatably connected with the second roller shaft, and the other end of the second connecting rod is rotatably connected with the sliding piece.

According to some embodiments of the invention, the first piston rod is arranged to be displaced in a first direction.

According to some embodiments of the utility model, first compression roller with the second compression roller is the rubber roller, just the hardness of first compression roller is greater than the hardness of second compression roller.

According to some embodiments of the invention, the first connecting rod and the second connecting rod are connected with both ends of the slider, respectively.

According to some embodiments of the utility model, tension adjusting device still includes the third roller of crossing, the third cross the roller install in on the support, follow on the direction of delivery of material, the third cross the roller be located the second cross the roller with between the wind-up roll, the third cross the roller support to be located the wind-up roll with the second cross between the roller the material, just the wind-up roll with the second cross the roller all with same one side contact of material, the material is back to the second cross one side of roller with the third cross the roller contact. Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention will be further described with reference to the following drawings and examples, in which:

fig. 1 is a schematic view of an initial state of a tension adjusting device according to an embodiment of the present invention;

FIG. 2 is a schematic view of one of the states of the take-up process of the tensioning device of FIG. 1 (the stand not shown);

fig. 3 is a schematic view of a tension adjusting apparatus (bracket not shown) in another embodiment.

Reference numerals: 101-bracket, 102-wind-up roll, 103-first roller, 104-second roller, 105-third roller, 106-first roller, 107-material, 108-second roller, 109-linkage mechanism, 110-first roller shaft, 111-first roller, 112-second roller shaft, 113-second roller, 114-first connecting rod, 115-sliding rail, 116-sliding part, 117-second connecting rod, 201-first driving cylinder, 202-first cylinder body, 203-first piston rod, 204-second driving cylinder, 205-second cylinder body and 206-second piston rod.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, and a plurality of means are two or more. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Referring to fig. 1, the utility model provides a tension adjusting device, tension adjusting device include support 101, wind-up roll 102, first roller 103, second roller 104, driving piece, first compression roller 106, second compression roller 108 and link gear 109. Wherein, the winding roller 102, the first roller 103, the second roller 104, the driving element and the linkage mechanism 109 are all arranged on the bracket 101. It should be noted that the shape of the support 101 is not limited to the form shown in fig. 1, for example, in other embodiments, the support 101 may specifically include a plurality of sub-support bodies, each of which is provided with different components, and the sub-support bodies are arranged in a certain position so that the components of the wind-up roll 102, the first pass roll 103, the second pass roll 104, the first press roll 106, the second press roll 108, the linkage mechanism 109, and the like are distributed as shown in fig. 1.

Referring to fig. 1, the first roller 103 and the second roller 104 are arranged at intervals, the first roller 103 and the second roller 104 are both used for supporting the material 107, and the first roller 103 and the second roller 104 both contact the same side of the material 107, taking fig. 1 as an example, the tops of the first roller 103 and the second roller 104 both contact the lower side of the material 107. The driving member is not shown in the figure, and may be specifically configured as a motor, an output shaft of the motor is connected with the wind-up roll 102, and the driving member is configured to drive the wind-up roll 102 to rotate, so that the material 107 sequentially passes through the first roller 103 and the second roller 104, and is finally wound around the outer periphery of the wind-up roll 102. The first pressing roller 106 is used for abutting against the material 107 between the first roller 103 and the second roller 104, and the first pressing roller 106 is in contact with one side of the material 107, which is opposite to the first roller 103; the second press roller 108 is used for pressing and holding the material 107 on the wind-up roller 102. Both the first pressure roller 106 and the second pressure roller 108 are connected to a linkage 109. With reference to fig. 1 and fig. 2, after the first pressing roller 106 and the second pressing roller 108 are connected by the linkage 109, as the second pressing roller 108 moves away from the wind-up roller 102, the first pressing roller 106 moves in a direction away from both the first roller 103 and the second roller 104; as second pressure roller 108 approaches wind-up roller 102, first pressure roller 106 moves in a direction to approach both first pass roller 103 and second pass roller 104. The distance between the two rollers is based on the distance between the centers of the two rollers.

The tension adjusting process in the winding process will be briefly described with reference to fig. 1 and 2. As the winding proceeds, the winding diameter of the material 107 gradually increases, and the second pressing roller 108 that presses the material 107 moves in a direction away from the center of the winding roller 102 (in conjunction with fig. 1 and 2, the second pressing roller 108 in fig. 2 is rotated counterclockwise by a certain angle with respect to the state in fig. 1). In this process, the first pressing roller 106 moves along with the movement of the second pressing roller 108, and the first pressing roller 106 moves in a direction away from the first roller 103 and the second roller 104 at the same time (in conjunction with fig. 1 and fig. 2, the slider 116 and the first pressing roller 106 in fig. 2 are moved upward by a certain distance relative to the state in fig. 1), so as to reduce the force applied by the first pressing roller 106 on the material 107, thereby reducing the tension of the material 107, and thus realizing the winding taper tension control. The tension adjusting device provided by the utility model can reduce the acting force applied on the material 107 along with the increase of the rolling diameter of the material 107, thereby changing the tension of the material 107 and realizing the taper tension control in the rolling process; and the device has simple structure, does not need a high-precision sensor and a complex control algorithm, and has lower cost.

Referring to fig. 1, in some embodiments, the tension adjusting device further includes a third passing roller 105, the third passing roller 105 is located between the second passing roller 104 and the wind-up roller 102 along the conveying direction of the material 107, the third passing roller 105 abuts against the material 107, and the third passing roller 105 contacts with a side of the material 107 opposite to the second passing roller 104. The third roller 105 is mainly arranged to provide enough tension to the material 107 between the second roller 104 and the wind-up roller 102, so as to prevent the material 107 from loosening and affecting the winding quality.

Referring to fig. 1, the first pressing roller 106 includes a first roller shaft 110 and a first roller 111, the first roller 111 is sleeved on the periphery of the first roller shaft 110, the first roller 111 is used as a component directly contacting with the material 107, and the first roller 111 can rotate around the first roller shaft 110. Similarly, the second pressing roller 108 comprises a second roller shaft 112 and a second roller 113, the second roller 113 is sleeved on the periphery of the second roller shaft 112, the second roller 113 is used as a part directly contacting with the material 107, and the second roller 113 can rotate around the second roller shaft 112.

Referring to fig. 1, the linkage 109 includes a slide rail 115, a slider 116, a first link 114, and a second link 117. The sliding rail 115 is arranged on the bracket 101, and the sliding part 116 is arranged on the sliding rail 115 in a sliding way; one end of the first link 114 is connected to the slider 116, and the other end of the second link 117 is connected to the first roller shaft 110; one end of the second link 117 is connected to the slider 116, and the other end of the second link 117 is connected to the second roller 112. Therefore, the movement of the second pressing roller 108 drives the sliding part 116 to slide on the sliding rail 115, and the sliding of the sliding part 116 drives the first pressing roller 106 to move, so that the linkage between the second pressing roller 108 and the first pressing roller 106 is realized. The arrangement mode has the advantages of relatively simple structure and low cost. The first link 114 and the second link 117 are respectively connected to two ends of the sliding member 116, so that the size of the sliding member 116 can be reduced, the cost can be saved, and the structure of the device can be more compact.

Referring to fig. 2, in some embodiments, the tension adjusting apparatus further includes a first driving cylinder 201, the first driving cylinder 201 includes a first cylinder 202 and a first piston rod 203, the first cylinder 202 is connected to the bracket 101 (the connection point of the two is the area a in fig. 2), the first piston rod 203 is slidably connected to the first cylinder 202, the first piston rod 203 can extend or retract relative to the first cylinder 202, and the end of the first piston rod 203 is connected to the first roller shaft 110. The first driving cylinder 201 may be specifically configured as an air cylinder, and may also be configured as a hydraulic cylinder, and it should be noted that, in the air cylinder and the hydraulic cylinder, an assembly relationship between the cylinder body and the piston rod belongs to a well-known technology, and is not described in detail here.

Referring to fig. 1, a first driving cylinder 201 is provided to adjust the tension of the material 107 in the initial state (before the driving member drives the wind-up roll 102 to rotate and wind up): the first piston rod 203 extends out to enable the first pressing roller 106 to move towards the direction close to the first roller 103 and the second roller 104 simultaneously, so that the tension of the material 107 is increased; the retraction of the first piston rod 203 can move the first press roller 106 in a direction away from both the first roller 103 and the second roller 104, thereby reducing the tension of the material 107. Subsequently, as the winding-up proceeds, the first pressing roller 106 moves and brings the first piston rod 203 to gradually retract.

Referring to fig. 1, the center line of the first piston rod 203 and the center line of the slide rail 115 are parallel to each other (both center lines extend in the up-down direction). In this arrangement, the sliding member 116 and the first pressing roller 106 move in the same direction and at the same distance, and the first connecting rod 114 and the sliding member 116, and the first connecting rod 114 and the first pressing roller 106 are conveniently connected without being rotatably connected by some rotating connecting members, so that the whole device is more convenient to assemble.

Referring to fig. 2, in some embodiments, to facilitate adjustment of the initial state position of the second platen roller 108, the tension adjustment device further includes a second drive cylinder 204. The second driving cylinder 204 includes a second cylinder 205 and a second piston rod 206, the second cylinder 205 is connected to the bracket 101 (the region B in fig. 2 is the connection point of the two), the second piston rod 206 is slidably connected to the second cylinder 205, the second piston rod 206 can extend or retract relative to the second cylinder 205, and the end of the second piston rod 206 is connected to the second roller shaft 112. In some embodiments, the second cylinder 205 may be rotatably connected to the support 101, and a relative angle between the second driving cylinder 204 and the support 101 changes as the winding diameter of the material 107 changes, in which case, the second piston rod 206 may not extend or contract during the winding process, so as to prevent a deviation of tension control caused by a change in the pressing position of the second pressing roller 108 on the material 107.

Referring to fig. 1 and 2, when the second cylinder 205 is rotatably connected to the frame 101, the second press roller 108 is located above and to the right of the wind-up roller 102, and the connection point of the second cylinder 205 and the frame 101 is located below and to the right of the second press roller 108, and the second press roller 108 rotates in a direction approaching the wind-up roller 102 around the connection point of the second cylinder 205 and the frame 101 by the gravity of the second press roller 108, thereby maintaining the pressing state of the material 107 on the wind-up roller 102. In addition, in the case that the second cylinder 205 is rotatably connected to the bracket 101, one end of the second connecting rod 117 is rotatably connected to the second roller 112, and the other end of the second connecting rod 117 is rotatably connected to the sliding member 116 (specifically, the second connecting rod can be rotatably connected by a connecting member such as a hinge), so that the sliding member 116 is driven by the movement of the second pressing roller 108 to slide. In the case where the length of the second link 117 is not changed, if neither the connection between the second link 117 and the slider 116 nor the connection between the second link 117 and the second pressure roller 108 is rotational connection, the second link 117 is easily broken when the second pressure roller 108 moves, and the linkage 109 is disabled.

Referring to fig. 3, in other embodiments, the second driving cylinder 204 may be installed in a manner similar to the first driving cylinder 201, that is, the second cylinder 205 is fixedly connected to the bracket 101, and the second piston rod 206 extends in the up-down direction; this arrangement is simple and the second drive cylinder 204 is difficult to mount, and in this arrangement, neither the connection between the second link 117 and the slider 116 nor the connection between the second link 117 and the second pressure roller 108 need to be a rotational connection.

The first pressing roller 106 and the second pressing roller 108 can be both arranged as rubber rollers (i.e. the first roller 111 and the second roller 113 are arranged as rubber materials), so that the friction force between the first pressing roller 106 and the material 107 and the friction force between the second pressing roller 108 and the material 107 are increased, and the slip of the material 107 is reduced. In the case where both the first pressing roller 106 and the second pressing roller 108 are provided as rubber rollers, the hardness of the first pressing roller 106 may be set to be greater than that of the second pressing roller 108, and the hardness of the first roll 111 may be set to be greater than that of the second roll 113. For the hardness of the rubber, the shore hardness can be used, and in some embodiments, the shore hardness of the first roller 111 can be set to 80HA, and the shore hardness of the second roller 113 can be set to 40 HA. The second roller 113 is used for pressing and holding the material 107 on the winding roller 102, and the hardness of the second roller 113 is not too high, otherwise obvious wrinkles or indentations of the wound material 107 are easily caused; the first roller 111 is used for adjusting the tension of the material 107, the hardness of the first roller 111 can be set to be higher, the first roller 111 with higher hardness has smaller deformation amount relatively, and the tension of the material 107 is not easily influenced by the elastic force generated by the deformation of the first roller 111, so that the error of taper tension control is favorably reduced.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.

Claims (10)

1. Tension adjusting device for adjust the tension of material, its characterized in that includes:

a support;

the winding roller is arranged on the bracket;

a first roller;

the first roller and the second roller are arranged on the bracket at intervals and are used for supporting the material, and the first roller and the second roller are in contact with the same side of the material;

the driving piece is arranged on the bracket and connected with the winding roller, and the driving piece can drive the winding roller to rotate so that the material sequentially passes through the first roller and the second roller and is wound on the periphery of the winding roller;

the first pressing roller is used for abutting against the material between the first roller and the second roller, and one side of the material, which is back to the first roller, is in contact with the first pressing roller;

the second pressing roller is used for pressing and holding the material on the winding roller;

the linkage mechanism, first compression roller with the second compression roller all with the linkage mechanism is connected, and follows the second compression roller is kept away from the wind-up roll, first compression roller is towards keeping away from first cross the roller with the direction motion of roller is crossed to the second, follows the second compression roller is close to the wind-up roll, first compression roller is towards being close to first cross the roller with the direction motion of roller is crossed to the second.

2. The tension adjustment device of claim 1, wherein the linkage mechanism comprises:

the sliding rail is arranged on the bracket;

the sliding piece is mounted on the sliding rail in a sliding mode;

one end of the first connecting rod is connected with the sliding piece, and the other end of the first connecting rod is connected with the first pressing roller;

and one end of the second connecting rod is connected with the sliding piece, and the other end of the second connecting rod is connected with the second pressing roller.

3. A tension adjusting device as claimed in claim 2, further comprising a first driving cylinder, the first driving cylinder comprising a first cylinder body and a first piston rod, the first piston rod being slidably connected to the first cylinder body, the first cylinder body being connected to the bracket, and an end of the first piston rod being connected to the first press roller.

4. A tension adjusting device as claimed in claim 3, further comprising a second driving cylinder, the second driving cylinder comprising a second cylinder body and a second piston rod, the second piston rod being slidably connected to the second cylinder body, the second cylinder body being connected to the bracket, and an end of the second piston rod being connected to the second pressing roller.

5. A tensioning device according to claim 4, characterized in that the second cylinder is rotatably connected to the bracket.

6. The tension adjusting device of claim 5, wherein the second press roller comprises a second roller shaft and a second roller, the second roller is sleeved on the periphery of the second roller shaft, and the second roller can rotate around the second roller shaft; one end of the second connecting rod is rotatably connected with the second roller shaft, and the other end of the second connecting rod is rotatably connected with the sliding piece.

7. A tensioning device according to claim 3, characterized in that the centre line of the first piston rod is parallel to the centre line of the slide.

8. The tension adjusting apparatus according to claim 2, wherein the first press roller and the second press roller are both rubber rollers, and the hardness of the first press roller is greater than that of the second press roller.

9. The tension adjustment device of claim 2, wherein the first link and the second link are connected to both ends of the slider, respectively.

10. A tension adjusting device as claimed in any one of claims 1 to 9, further comprising a third roller mounted on the bracket, the third roller being located between the second roller and the take-up roller in the conveying direction of the material, the third roller abutting against the material located between the take-up roller and the second roller, and both the take-up roller and the second roller contacting the same side of the material, the side of the material opposite to the second roller contacting the third roller.

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