Auxiliary material coil tensioning device

Abstract

The utility model relates to the field of coil material tension devices, in particular to an auxiliary material coil material tension device, which comprises a rotating shaft, a tension device, a tension device, a tension device and a tension device, and is characterized in that the rotating shaft is used for connecting auxiliary materials and is suitable for tensioning the auxiliary materials during rotation; the rotating shaft is rotationally connected with the base, and the rotating shaft is suitable for rotating around the axis of the rotating shaft; the pressing friction block is fixedly connected to one axial end of the rotating shaft; the friction plate is arranged in a manner of directly facing, contacting and pressing the friction block; the pressing mechanism is connected with the friction plate and used for adjusting the position of the friction plate in the axial direction of the rotating shaft. According to the technical scheme, friction force is adjusted through friction between the friction plate and the rotating shaft and pressure applied to the friction plate by the spring, so that tensioning force of a coil stock is adjusted; when the elastic force of the spring reaches the maximum, the maximum tensioning force can be provided, and the problems that a coil stock tensioning device used in equipment at the present stage cannot stably output the tensioning force and cannot provide large tensioning force are solved.

Description

Technical Field

[0001] The utility model relates to the field of coil tensioning devices, in particular to an auxiliary material coil tensioning device. Background Art

[0002] According to investigations and market feedback: At present, the tension of the coil tensioning device used in equipment is unstable and cannot meet the requirements of equipment use, resulting in loose or too tight feeding; some tensioning devices use torque motors to control the tension. Although it can solve the equipment problems, it increases the control points of the equipment and there is also a risk of motor burnout. Moreover, when a large tension is required, ordinary or small torque motors cannot meet this requirement, and a larger motor may need to be replaced to achieve torque control. Therefore, it is necessary to design a tensioning device that can stably control the tension and provide a large tension to meet the needs of the equipment. Content of the Utility Model

[0003] In view of this, the utility model provides an auxiliary material coil tensioning device to solve the problems that the tension of the coil tensioning device used in current equipment cannot be stably output and a large tension cannot be provided without using a large-volume torque motor.

[0004] The utility model provides an auxiliary material coil tensioning device, including:

[0005] A rotating shaft for connecting auxiliary materials and suitable for tensioning the auxiliary materials when rotating;

[0006] A base, the rotating shaft is rotatably connected to the base, and the rotating shaft is suitable for rotating around its own axis;

[0007] A pressing friction block fixedly connected to one end of the axial direction of the rotating shaft;

[0008] A friction plate arranged opposite to and in contact with the pressing friction block;

[0009] A pressing mechanism connected to the friction plate for adjusting the position of the friction plate along the axial direction of the rotating shaft.

[0010] Optionally, the auxiliary material coil tensioning device further includes a bearing, the bearing is arranged on the base, and the rotating shaft is rotatably connected to the base through the bearing.

[0011] Optionally, the rotating shaft passes through the inner ring of the bearing and is locked and connected to the pressing friction block.

[0012] Optionally, the bearing is an angular contact bearing.

[0013] Optionally, at least one anti-rotation plane is included on the side surface of the friction plate. The auxiliary material coil tensioning device further includes a position-fixed limiting plane that profiles the anti-rotation plane, and the limiting plane is in contact with the anti-rotation plane.

[0014] Optionally, the pressing mechanism includes a housing, a spring, and a tightening screw. The spring and the tightening screw are located on the side of the friction plate facing away from the pressing friction block. One end of the spring contacts the friction plate, and the other end points to the tightening screw. The housing is fixedly connected to the base. The end of the housing away from the rotating shaft is threadedly connected to the tightening screw. The tightening screw extends into the housing and presses against the end of the spring, and the other end of the spring presses against the friction plate to press the friction plate against the pressing friction block.

[0015] Optionally, the pressing mechanism further includes a locking nut that is threadedly connected to the tightening screw and is located outside the housing.

[0016] Optionally, the pressing mechanism further includes a spring pad block that is located between the spring and the tightening screw and is located inside the housing.

[0017] Optionally, both the pressing friction block and the friction plate are located inside the housing, and an observation hole is provided on the side wall of the housing for observing the wear degree of the pressing friction block and the friction plate.

[0018] Optionally, the housing is detachably fixedly connected to the base.

[0019] The technical solution of the present utility model has the following advantages:

[0020] 1. Utilize the friction between the friction plate and the rotating shaft, and then adjust the friction force by the pressure exerted by the spring on the friction plate, thereby adjusting the tension of the coil material. When the spring force reaches the maximum, the maximum tension can be provided, solving the problems that the tension of the coil material tensioning device used in the current equipment cannot be smoothly output and cannot provide a large tension.

[0021] 2. The function can be realized by several parts such as the base, the pressing friction block, the friction plate, and the pressing mechanism, solving the problem of the complex structure of the coil material tensioning device used in the current equipment.

[0022] 3. There is no need to use a torque motor, and the function can be realized through a pure mechanical mechanism, improving the service life and reducing the cost. Description of the Drawings

[0023] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the attached drawings required for use in the embodiments. It should be understood that the following attached drawings only show certain embodiments of the present utility model, and thus should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related attached drawings can also be obtained based on these attached drawings.

[0024] Figure 1 is the front view of the auxiliary material coil tensioning device in the embodiment;

[0025] Figure 2 is the exploded view of the auxiliary material coil tensioning device in the embodiment;

[0026] Figure 3 is Figure 1 the sectional view taken along the A-A direction of

[0027] In the figure: rotating shaft 1, base 2, pressing friction block 3, friction plate 4, anti-rotation plane 41, bearing 5, pressing mechanism 6, housing 61, observation hole 611, limiting plane 612, spring 62, top screw 63, locking nut 64, spring pad 65. Specific embodiments

[0028] The following will combine the attached drawings to describe the specific embodiments of the present utility model in detail. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the description of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by the present utility model.

[0029] Unless otherwise clearly specified and limited, terms such as "set", "install", "connect", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations.

[0030] The orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the attached drawings, or the orientation or positional relationship when the product of this utility model is habitually placed. It is only for the convenience of description and simplification of description, rather than indicating or implying 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 understood as a limitation of the present utility model.

[0031] The terms "first", "second", "third", etc. are only used to distinguish components with similar attributes, rather than indicating or implying relative importance or a specific order.

[0032] The term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion. In addition to the elements listed, it may also include other elements not expressly listed.

[0033] Please refer to Figure 1 and Figure 2 , the present utility model provides an auxiliary material coil tensioning device, which includes a rotating shaft 1, a base 2, a pressing friction block 3, a friction plate 4 and a pressing mechanism 6. The base 2 is fixed on the production equipment. The rotating shaft 1 is rotatably connected to the base 2. The rotating shaft 1 can only rotate around its own axis. The auxiliary material is wound around the rotating shaft 1. When the rotating shaft 1 rotates, the tensioning effect on the auxiliary material can be achieved.

[0034] Please refer to Figure 3 , one axial end of the rotating shaft 1 is fixedly connected to the pressing friction block 3. Preferably, the pressing friction block 3 is a columnar object and has an end face perpendicular to the axis of the rotating shaft 1. This end face faces and contacts the friction plate 4, and the friction plate 4 has a plane that adheres to this end face. The pressing mechanism 6 is connected to the friction plate 4 and is used to adjust the position of the friction plate 4 along the axis of the rotating shaft 1, so as to adjust the pressing degree of the friction plate 4 on the pressing friction block 3.

[0035] ]>When the production equipment unwinds, the tension on the auxiliary material is adjustable. For example, by adjusting the rotation speed of the unwinding roller shaft, the speed of the auxiliary material passing between a pair of unwinding roller shafts can be adjusted. The faster the unwinding speed, the greater the tension on the auxiliary material, and vice versa. When the friction force received by the rotating shaft 1 from the friction plate 4 is greater, the production equipment can adjust the tension force of the auxiliary material to be greater, without worrying about slipping between the rotating shaft 1 and the friction plate 4. Therefore, the magnitude of the friction force received by the rotating shaft 1 corresponds to the maximum tension value of the tension force of the rotating shaft 1. Therefore, reducing the friction force received by the rotating shaft 1 can reduce the maximum tension value of the rotating shaft 1, and increasing the friction force received by the rotating shaft 1 can increase the maximum tension value of the rotating shaft 1, so as to realize the adjustment of the tension force of the auxiliary material coil.

[0036] Please refer to Figure 3The auxiliary material coil tensioning device provided by the present invention utilizes friction generated by direct contact between the friction plate 4 and the end of the rotating shaft 1, or by contact between the friction plate 4 and the pressing friction block 3 fixed to the end of the rotating shaft 1. The friction force of the coil is then adjusted by the pressure applied to the friction plate 4 by the pressing mechanism 6. When the pressing mechanism 6 moves the friction plate 4 the maximum distance toward the rotating shaft 1, the positive pressure exerted by the friction plate 4 on the pressing friction block 3 is maximized, and the friction force of the friction plate 4 on the rotating shaft 1 is maximized. At this point, the rotating shaft 1 can provide the maximum tension. When the tension needs to be reduced, the pressing mechanism 6 moves the friction plate 4 in the opposite direction, reducing the friction force of the friction plate 4 on the rotating shaft 1. The previously high tension of the coil causes the rotating shaft 1 to slip relative to the friction plate 4 until the tension is reduced to a point where it is balanced with the friction force. Therefore, by adjusting the position of the friction plate 4 by the pressing mechanism 6, a smooth output of the coil tension can be achieved, and a high tension can be provided.

[0037] The clamping mechanism 6 can be any type of mechanism that can controllably push the friction plate 4 to move axially along the rotating shaft 1, such as an electric cylinder, a hydraulic cylinder, etc. A preferred type of clamping mechanism 6 is described below.

[0038] Please refer to Figure 3 The preferred clamping mechanism 6 includes a cover 61, a spring 62 and a tightening screw 63. The clamping friction block 3, the friction plate 4 and the spring 62 are all located in the cover 61; the end of the cover 61 away from the rotating shaft 1 is threadedly connected to the tightening screw 63, the spring 62 and the tightening screw 63 are located on the side of the friction plate 4 facing away from the clamping friction block 3, the spring 62 is located between the friction plate 4 and the tightening screw 63, one end of the spring 62 contacts the friction plate 4, and the other end points to the tightening screw 63; the central axis of the tightening screw 63 is parallel to or coincides with the central axis of the rotating shaft 1.

[0039] The cover 61 is cylindrical in shape. One end of the cover 61, axially adjacent to the rotating shaft 1, has an opening that covers the base 2. The other axial end of the cover 61 is closed. A threaded hole is provided at the center of the closed end, into which a tightening screw 63 is connected. A portion of the tightening screw 63 is located outside the cover 61, while the remaining portion extends through the threaded hole into the cover 61 to press against the end of the spring 62. The cover 61 is fixedly connected to the base 2 and forms an inner cavity. A spring 62 is disposed within the inner cavity. The axis of the spring 62 coincides with the axis of the rotating shaft 1. The spring 62 is located on the side of the friction plate 4 facing away from the compression friction block 3. One end of the spring 62 is used to press against the friction plate 4, while the other end contacts the tightening screw 63. Under the pressure of the spring 62, the friction plate 4 is pressed tightly against the compression friction block 3.

[0040] Further, to improve the pressing effect of the tightening screw 63 on the spring 62 and the pressing effect of the spring 62 on the friction plate 4, flat surfaces are cut at both ends of the spring 62. Further still, inside the housing 61, a spring spacer 65 is provided between the spring 62 and the tightening screw 63. The tightening screw 63 presses on the spring spacer 65, and the spring 62 is pressed through the spring spacer 65.

[0041] Further, the pressing mechanism 6 further includes a locking nut 64. The locking nut 64 is located outside the housing 61, specifically between the nut of the tightening screw 63 and the end face of the housing 61. A threaded hole is also provided at the center of the locking nut 64 to connect with the tightening screw 63. After adjusting to the appropriate tension by rotating the locking nut 64, by tightening the locking nut 64, the locking nut 64 presses on the end face of the housing 61. Under the action of the static friction force between the locking nut 64 and the end face of the housing 61, it is very difficult for the locking nut 64 to overcome the static friction force and reverse and loosen, thus achieving the purpose of locking the tightening screw 63.

[0042] Please refer to Figure 3 , further, the auxiliary material coil tensioning device further includes a bearing 5. The rotating shaft 1 is rotatably connected to the base 2 through the bearing 5. The base 2 is provided with mounting holes for the bearing 5 to be inserted. One end of the rotating shaft 1 passes through the mounting hole and is connected to the pressing friction block 3. The bearing 5 is required to be able to withstand a large axial force, such as an axial force of 43 kg. Ordinary deep groove ball bearings 5 generally cannot meet this requirement, so angular contact bearings are preferably used.

[0043] Further, the housing 61 and the base 2 are detachably fixed by screws. One side of the mounting hole on the base 2 has a step to block the bearing 5, and the other side has no step to facilitate the smooth insertion of the bearing 5 into the mounting hole. When the housing 61 is installed on the base 2, the housing ৬১ blocks the axial movement of the bearing 5. To prevent the rotating shaft 1 from axially moving, a step is designed at the position of the rotating shaft 1 close to the bearing 5. The part of the rotating shaft 1 inserted into the inner ring of the bearing 5 is a thinner shaft end. After this shaft end extends from the other end of the bearing 5, it is fixedly connected to the pressing friction block 3. The side surface of the pressing friction block 3 also presses on the outer side surface of the inner ring of the bearing 5, thereby realizing the fixed connection of the rotating shaft 1, the bearing 5, and the pressing friction block 3.

[0044] Please refer to Figure 2 and Figure 3 , further, to prevent the friction plate 4 from rotating in the same direction as the rotating shaft 1, at least one anti-rotation plane 41 is included on the side surface of the friction plate 4. A limiting plane 612 corresponding to the position of the anti-rotation plane 41 is provided on the inner wall of the housing 61. The limiting plane 612 is shaped like the anti-rotation plane 41, and the limiting plane 612 is in contact with the anti-rotation plane 41. The contour of the friction plate 4 can be designed as a polygon such as a triangle or a square.

[0045] Please refer to Figure 2, Further, an observation hole 611 is provided on the side wall of the housing 61. The observation hole 611 is circumferentially distributed on the side wall of the housing 61 in the form of multiple waist-shaped holes, and is used to observe the wear degree of the pressing friction block 3 and the friction plate 4. The pressing friction block 3 is preferably made of 304 stainless steel, and the friction plate 4 is preferably made of 45 steel. The pressing friction block 3 wears relatively fast, so the pressing friction block 3 is a consumable material. If it is observed from the observation hole 611 that the consumable material is severely worn, the housing 61 is removed from the base 2 to replace the consumable material. The observation hole 611 also has a chip removal function, and the debris of the pressing friction block 3 can be discharged from the observation hole 611 in time, avoiding blockage inside the housing 61 after accumulation and causing obstruction to the movement of components.

[0046] In summary, the technical solution of the present utility model has the following advantages: By utilizing the friction between the friction plate 4 and the rotating shaft 1, and then adjusting the friction force by the pressure exerted by the spring 62 on the friction plate 4, the tension force of the coiled material is adjusted; when the elastic force of the spring 62 reaches the maximum, the maximum tension force can be provided, solving the problems that the tension force of the coiled material tensioning device used in the current equipment cannot be stably output and cannot provide a large tension force. The function can be realized by several parts such as the base 2, the pressing friction block 3, the friction plate 4 and the pressing mechanism 6, solving the problem of the complex structure of the coiled material tensioning device used in the current equipment. There is no need to use a torque motor, and the function can be realized through a pure mechanical mechanism, improving the service life and reducing the cost.

[0047] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A tensioning device for auxiliary material coils, characterized in that: include: A rotating shaft, used for connecting auxiliary materials and suitable for tightening the auxiliary materials during rotation; a base, the rotating shaft being rotatably connected to the base, and the rotating shaft being adapted to rotate about its own axis; A pressing friction block is fixedly connected to one axial end of the rotating shaft; A friction plate is arranged facing and contacting the pressing friction block; A clamping mechanism is connected to the friction plate and is used to adjust the position of the friction plate along the axial direction of the rotating shaft.

2. The auxiliary material coil tensioning device according to claim 1, characterized in that: The auxiliary material coil tensioning device further includes a bearing, which is arranged on the base, and the rotating shaft is rotatably connected to the base through the bearing.

3. The auxiliary material coil tensioning device according to claim 2, characterized in that: The rotating shaft passes through the inner ring of the bearing and is locked with the pressing friction block.

4. The auxiliary material coil tensioning device according to claim 3, characterized in that: The bearing is an angular contact bearing.

5. The auxiliary material coil tensioning device according to claim 1, characterized in that: The side surface of the friction plate includes at least one anti-rotation plane, and the auxiliary material coil tensioning device also includes a fixed position limiting plane, which imitates the anti-rotation plane and is in contact with the anti-rotation plane.

6. The auxiliary material coil tensioning device according to any one of claims 1 to 5, characterized in that: The clamping mechanism includes a cover, a spring and a tightening screw, the spring and the tightening screw are located on the side of the friction plate facing away from the clamping friction block, one end of the spring contacts the friction plate, and the other end points to the tightening screw; the cover is fixedly connected to the base, and the end of the cover away from the rotating shaft is threadedly connected to the tightening screw, the tightening screw extends into the cover and presses the end of the spring, and the other end of the spring presses against the friction plate so that the friction plate is pressed on the clamping friction block.

7. The auxiliary material coil tensioning device according to claim 6, characterized in that: The clamping mechanism further includes a locking nut, which is threadably connected to the jacking screw and is located outside the housing.

8. The auxiliary material coil tensioning device according to claim 7, characterized in that: The pressing mechanism further includes a spring washer, wherein the spring washer is located between the spring and the tightening screw, and the spring washer is located inside the cover shell.

9. The auxiliary material coil tensioning device according to claim 8, characterized in that: The pressing friction block and the friction plate are both located in the housing, and an observation hole is provided on the side wall of the housing for observing the degree of wear of the pressing friction block and the friction plate.

10. The auxiliary material coil tensioning device according to claim 9, characterized in that: The cover shell is detachably fixedly connected to the base.

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