A tension device

Abstract

The utility model relates to tension control technical field, concretely relates to a tension device, the tension device includes tension generating unit and electric control board, the tension generating unit is installed in the shell, the tension generating unit is electrically connected in electric control board, and the work is controlled by the electric control board, the electric control board is installed in the shell, and is set up in the bottom of tension generating unit, the utility model provides a tension device, sets up the electric control board in the bottom of tension generating unit, and the design and extension of electric control board are convenient.

Description

Technical Field

[0001] This utility model relates to the field of tension control technology, specifically to a tension device. Background Technology

[0002] The warping machine is a very important piece of textile equipment. Its working principle is to draw multiple yarns parallel from the bobbin and wind them evenly onto the warp beam according to the process requirements, preparing them for the subsequent weaving process. In this process, the tension control of the yarn is particularly critical.

[0003] Currently, commonly used tension devices are mainly divided into mechanical and electromagnetic types. While mechanical tension devices are simple in structure and low in cost, they suffer from drawbacks such as low adjustment precision, slow response speed, and short service life. In contrast, electromagnetic tensioners offer superior performance. They incorporate tension generating units such as hysteresis loops and core components like an electronic control board within their housing. The hysteresis loop generates a controllable damping torque through electromagnetic induction, thereby achieving precise control of yarn tension.

[0004] However, existing electromagnetic tensioners have some limitations in their structural layout. The common layout currently involves placing the hysteresis coil inside the housing and vertically positioning the control board to the side of the hysteresis coil. While this design utilizes the unused space to the side of the hysteresis coil, achieving a compact structure, it also introduces several significant problems: First, this layout severely limits the size of the control board, restricting its functional expansion and component arrangement; second, due to space constraints, it is impossible to install a speed detection device near the hysteresis coil, making it difficult to monitor and provide real-time feedback on the hysteresis coil's operating status; furthermore, the control board itself generates heat, and its close proximity to the hysteresis coil leads to heat accumulation, affecting heat dissipation. Utility Model Content

[0005] To address the technical problem of size and functional limitations in the structural layout of existing electromagnetic tension devices, this invention proposes a tension device in which the control board is located at the bottom of the tension generating unit, facilitating the design and expansion of the control board.

[0006] The technical solution of this utility model:

[0007] A tensioning device, comprising:

[0008] A tension generating unit is installed inside a housing and is electrically connected to an electronic control board, which controls its operation.

[0009] An electronic control board is installed inside the housing and is located at the bottom of the tension generating unit.

[0010] Furthermore, the outer casing includes an upper shell and a bottom cover, the bottom of the upper shell has an opening, and the tension generating unit is installed inside the upper shell; the electronic control board is installed on the bottom cover, and the bottom cover covers the opening at the bottom of the upper shell for installation.

[0011] Furthermore, the bottom cover is made of metal; the upper shell is made of plastic.

[0012] Furthermore, the bottom surface of the bottom cover is provided with a number of nut posts, and the electronic control board is installed by being supported by the number of nut posts.

[0013] Furthermore, the bottom outer edge of the bottom cover is bent toward the upper shell to form a folded edge, and the inner side of the folded edge forms the mounting space for the electronic control board.

[0014] Furthermore, the folded edge is bent outward to form a mounting edge, and the mounting edge is provided with multiple mounting holes, and the upper shell is provided with multiple connecting posts accordingly.

[0015] Furthermore, the tension generating unit is vertically arranged, the electronic control board is horizontally arranged at the bottom of the tension generating unit, and a speed detection sensor is provided on the electronic control board corresponding to the tension generating unit.

[0016] Furthermore, the upper shell is also provided with a tension detection sensor for detecting the tension of the lead wire, and the tension detection sensor is electrically connected to the electronic control board.

[0017] Furthermore, the upper shell is also provided with a control switch and an indicator light, which are electrically connected to the electronic control board.

[0018] Furthermore, the tension device also includes a yarn guide wheel assembly, which is disposed above the tension generating unit and is provided with torque by the tension generating unit; the tension generating unit is a hysteresis device, which is suspended below the top surface of the upper shell by mounting screws, and the top surface of the upper shell is provided with countersunk holes for accommodating the mounting screws.

[0019] By adopting the above technical solution, the tension device provided by this utility model has the following advantages compared with the prior art: The tension device of this utility model places the control board at the bottom of the tension generating unit. The size of the control board can be set to be larger, allowing for functional expansion as needed and facilitating the arrangement of components on the control board. Furthermore, a speed detection sensor can be easily installed on the control board to detect the speed of the tension generating unit, thereby detecting problems such as wire breakage. In addition, space is reserved on the side of the tension generating unit, facilitating cable arrangement and the addition of other components. Attached Figure Description

[0020] Figure 1 This is a perspective view of the tension device of this utility model from a first-person perspective.

[0021] Figure 2 This is a schematic diagram of the upper shell and tension generating unit of this utility model;

[0022] Figure 3 This is a schematic diagram of the bottom cover and the electronic control board of this utility model;

[0023] Figure 4 This is a perspective view of the tension device of this utility model from a second perspective.

[0024] Figure 5 This is a front view of the tension device of this utility model;

[0025] Figure 6 for Figure 5 Sectional view along line AA;

[0026] Figure 7 for Figure 5 Sectional view along the BB direction.

[0027] in,

[0028] Outer shell 1, upper shell 11, connecting post 111, sensor mounting part 112, mounting plane 113, protruding ring 114, mounting inclined surface 1141, connecting seat 1142, countersunk hole 1143, bearing 1144, baffle 115, slot 116, pressing plane 1161, pressing arc surface 1162, clamping plate 117, pressing protrusion 1171, pressing pin 1172, bottom cover 12, folded edge 121, mounting edge 122, mounting hole 1221; tension generating unit 2, rotating shaft 21; electronic control Plate 3, nut column 31, control switch 32, indicator light 33; yarn guide wheel assembly 4, first yarn guide wheel seat 41, first yarn guide rod 411, first movable hole 412, first annular protrusion 413, second yarn guide wheel seat 42, second yarn guide rod 421, second movable hole 422, second annular protrusion 423; guide eye 5; pretension assembly 6, guide eye 61, U-shaped groove 611, first pressure plate 62, second pressure plate 63, pressure counterweight plate 64, fixing seat 65, U-shaped clip 66. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0030] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0031] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0032] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0033] like Figure 1-7 As shown, this embodiment provides a tension device, which includes a housing 1. A tension generating unit 2 and an electronic control board 3 are installed inside the housing 1. The tension generating unit 2 is a component that can provide a certain tension / torque, and can be, but is not limited to, a hysteresis device, a motor, etc. The electronic control board 3 is located at the bottom of the tension generator. The tension generating unit 2 is electrically connected to the electronic control board 3 via a cable and is controlled by the electronic control board 3 to operate in order to provide a suitable tension.

[0034] In existing tension devices, the electronic control board 3 is typically positioned vertically to the side of the tension generating unit 2, for example... Figure 6On the right side of the tension device in this embodiment, compared with the prior art, the control board 3 is located at the bottom of the tension generating unit 2. The size of the control board 3 can be set to be larger, which can expand the functions as needed and facilitate the arrangement of components on the control board 3. Furthermore, a speed detection sensor can be easily installed on the control board 3 to detect the speed of the tension generating unit 2, thereby detecting problems such as wire breakage. In addition, space is reserved on the side of the tension generating unit 2 to facilitate the arrangement of cables and the addition of other components.

[0035] In this embodiment, the outer casing 1 includes an upper shell 11 and a bottom cover 12. The bottom of the upper shell 11 has an opening, and the tension generating unit 2 is installed inside the upper shell 11. The electronic control board 3 is installed on the bottom cover 12 near the side of the upper shell 11. The bottom cover 12 and the upper shell 11 can be connected and installed using fasteners such as screws. During installation, the bottom cover 12 covers the opening at the bottom of the upper shell 11. This facilitates the installation of the tension generating unit 2 and the electronic control board 3, and the bottom cover 12 can be individually designed to match the structural dimensions of the electronic control board 3, facilitating subsequent expansion and upgrades. In other embodiments, the outer casing 1 can also be a single integral shell with an opening at the top, allowing the electronic control board 3 to be inserted and installed from the top.

[0036] The bottom cover 12 is preferably made of metal, and more preferably of a non-magnetic material such as aluminum, to reduce interference with the tension generating unit 2. The metal material of the bottom cover 12 allows heat from the tension device to dissipate quickly, especially the heat generated by the electronic control board 3 mounted on the bottom cover 12, which can be directly and rapidly dissipated through the bottom cover 12. Several nut posts 31 can be provided on the bottom surface of the bottom cover 12 to support the electronic control board 3, with corresponding through holes on the electronic control board 3 for installation with screws; the nut posts 31 can be fixed to the bottom cover 12 by riveting or other methods. The upper shell 11 is preferably made of plastic, which is lightweight, low-cost, and easy to manufacture.

[0037] Furthermore, in this embodiment, the outer edge of the bottom surface of the bottom cover 12 is bent towards the upper shell 11 to form a flange 121. The inner side of the flange 121 and the bottom surface of the bottom cover 12 form an installation space for the electronic control board 3. In this way, in addition to the bottom of the electronic control board 3, the heat around the electronic control board 3 can also be dissipated outwards more quickly. The flange 121 is also bent outwards to form an installation edge 122. The installation edge 122 is provided with multiple installation holes 1221. Multiple connecting posts 111 are correspondingly formed inside the upper shell 11. The upper shell 11 can be connected to the connecting posts 111 by screws passing through the installation holes 1221 for installation.

[0038] like Figure 6As shown, in this embodiment, the tension generating unit 2 is vertically positioned, meaning its axis is vertical; the electronic control board 3 is horizontally positioned at the bottom of the tension generating unit 2. A speed detection sensor is also provided on the electronic control board 3. This speed detection sensor can be, but is not limited to, a Hall switch, a proximity switch, etc., and a corresponding triggering element needs to be provided on the rotating component of the tension generating unit 2. This allows for convenient speed detection, enabling real-time determination of issues such as wire breakage.

[0039] like Figure 5 As shown, the upper shell 11 is also provided with a sensor mounting part 112 at the yarn exit position, which is used to install a tension detection sensor to detect the yarn exit tension; the tension detection sensor can be electrically connected to the electronic control board 3 through a cable, thereby realizing tension feedback and adjustment, and ensuring stable yarn exit tension.

[0040] In this embodiment, a control switch 32 and an indicator light 33 are also provided on the upper shell 11. The control switch 32 is used to control the opening of the tension device, and the indicator light 33 is used to indicate the working status of the tension device. The control switch 32 and the indicator light 33 are directly or indirectly electrically connected to the electronic control board.

[0041] like Figure 7 As shown, the tension device in this embodiment also includes a yarn guide wheel assembly 4, which is disposed above the tension generating unit 2 and is supplied with torque by the tension generating unit 2. In this embodiment, the tension generating unit 2 is preferably a hysteresis device, which is suspended below the top surface of the upper shell 11 by mounting screws. The top surface of the upper shell 11 has countersunk holes 1143 for accommodating the mounting screws, which does not affect the installation of components such as the second yarn guide wheel seat 42 in the yarn guide wheel assembly 4.

[0042] Furthermore, the top surface of the upper shell 11 is formed as a mounting plane 113, and a convex ring 114 is formed on the mounting plane 113. The inner and outer sidewalls of the convex ring 114 are preferably arc surfaces. The yarn guide wheel assembly 4 is installed inside the convex ring 114. The yarn guide wheel assembly 4 includes a first yarn guide wheel seat 41 and a second yarn guide wheel seat 42 arranged vertically. The first yarn guide wheel seat 41 and the second yarn guide wheel seat 42 are preferably circular plates. A plurality of yarn guide rods are provided between the first yarn guide wheel seat 41 and the second yarn guide wheel seat 42. The yarn is wound around the outer periphery of these yarn guide rods. The upper surface of the second yarn guide wheel seat 42 is coplanar with the upper surface of the convex ring 114.

[0043] In this embodiment, a convex ring 114 is provided on the mounting plane 113. A mounting space of a certain size is formed inside the convex ring 114, and the upper surface of the convex ring 114 is coplanar with the upper surface of the second guide wheel seat 42 in the guide wheel assembly 4. There is only a small rotational gap between the second guide wheel seat 42 and the convex ring 114. When the warp beam of the warping machine suddenly stops, the guide wheel assembly 4 will continue to operate for a period of time. During this time, even if the yarn wrapped around the outer periphery of the guide wheel assembly 4 becomes loose, it will not move below the second guide wheel seat 42. When the warp beam starts again, the yarn can continue to move around the guide wheel assembly 4 without breaking. Furthermore, this embodiment only provides a small convex ring 114, which is easy to manufacture using molds or other methods.

[0044] Preferably, in this embodiment, the upper surface of the convex ring 114 and the upper surface of the second yarn guide wheel seat 42 are both inclined at a certain angle towards the yarn inlet side, for example, 2-3 degrees. This facilitates the smooth entry of the yarn from the inlet side into the yarn guide wheel assembly 4, and prevents the yarn from contacting the top edge of the convex ring 114 near the yarn inlet side, thus preventing damage to the yarn and affecting its tension. Furthermore, by setting the inclination angle, impurities such as lint and fibers can slide directly off or slide off onto the mounting plane 113 outside the convex ring 114 during vibration. Since the convex ring 114 occupies a small proportion of the mounting plane 113, the mold structure can be simplified, making manufacturing easier, and allowing impurities such as lint and fibers to fall onto the mounting plane 113 outside the convex ring 114 more quickly. Preferably, as... Figure 5 As shown, the mounting surface 113 may also protrude a portion toward the control switch 32 and indicator light 33, thereby preventing impurities from falling onto the control switch 32 and indicator light 33.

[0045] In this embodiment, the tension generating unit 2 is installed inside the convex ring 114. The center of the first yarn guide wheel seat 41 is connected to the rotating shaft 21 of the tension generating unit 2, for example, by direct fixation or by means of pins, keys, etc. A mounting inclined surface 1141 is recessed on the mounting plane 113 inside the convex ring 114. A connecting seat 1142 is installed on the mounting inclined surface 1141. The second yarn guide wheel seat 42 is connected to the connecting seat 1142 via a bearing 1144, such that the centerline of the second yarn guide wheel seat 42 is inclined at a certain angle relative to the centerline of the first yarn guide wheel seat 41. Through holes are provided on the connecting seat 1142 and the mounting plane 113 to allow the rotating shaft 21 to pass through. The tension generating unit 2 is installed on the bottom of the mounting plane 113 inside the convex ring 114 by means of mounting screws. A countersunk hole 1143 is formed on the mounting plane 113 inside the convex ring 114 corresponding to the mounting screws; this does not affect the setting of the connecting seat 1142. The mounting plane 113 on the inner side of the convex ring 114 can be recessed to a certain depth as needed to facilitate the installation of various parts.

[0046] Furthermore, the yarn guide rod includes a plurality of first yarn guide rods 411 and second yarn guide rods 421 arranged sequentially at intervals. For example, each first yarn guide rod 411 has two adjacent sides that are second yarn guide rods 421, and each second yarn guide rod 421 has two adjacent sides that are first yarn guide rods 411. The first yarn guide rods 411 are distributed circumferentially along the first yarn guide wheel seat 41. One end of each first yarn guide rod 411 is fixedly connected to the first yarn guide wheel seat 41, and the other end of each first yarn guide rod 411 is inclined outward at the same preset angle, for example, 3-7 degrees. A second movable hole 422 is correspondingly provided on the second yarn guide wheel seat 42, and the other end of each first yarn guide rod 411 extends into the second movable hole 422 on the second yarn guide wheel seat 42. The second yarn guide rods 421 are distributed circumferentially along the second yarn guide wheel seat 42. One end of each second yarn guide rod 421 is fixedly connected to the second yarn guide wheel seat 42, and the other end is inclined inward at a set angle, for example, 3-7 degrees. A first movable hole 412 is correspondingly provided on the first yarn guide wheel seat 41, and the other end of the second yarn guide rod 421 extends into the first movable hole 412 on the first yarn guide wheel seat 41. In this way, when the yarn moves, it can spiral upward along the outer circumference of each yarn guide rod, and it can ensure that when the yarn is wound around the outer circumference of each yarn guide rod, it will not directly detach from above or below.

[0047] Furthermore, a second annular protrusion 423 is formed on the inner side of each yarn guide rod on the second yarn guide wheel seat 42, facing the first yarn guide wheel seat 41. A first annular protrusion 413 is formed on the inner side of each yarn guide rod on the first yarn guide wheel seat 41, facing the second yarn guide wheel seat 42. The second annular protrusion 423 extends into the first annular protrusion 413. This prevents impurities such as lint and fibers from entering the inner rotating shaft 21 and bearing 1144, reducing their impact on rotation, and preventing them from falling downwards from the central through hole of the connecting seat 1142.

[0048] The tension device in this embodiment also includes an inlet eyelet 5 and a pretension assembly 6. A baffle 115 is integrally formed on the upper shell 11, and the inlet eyelet 5 is disposed in the middle of the baffle 115. The yarn enters the guide wheel assembly 4 after passing through the inlet eyelet 5 and the pretension assembly 6, then winds around the guide wheel assembly 4 before being led out. Figure 5 As shown, the yarn is introduced through the inlet eye 5 and the pretension assembly 6, and wound around the guide wheel assembly 4 for 1-10 turns, preferably 3-4 turns, in a clockwise or counterclockwise direction; the angle α between the yarn exit direction and the inlet direction is 0-90 degrees, preferably 90 degrees, to facilitate the yarn being led out to the warping machine.

[0049] Furthermore, the pretension assembly 6 in this embodiment includes a yarn guide ceramic eye 61 fixed on the upper shell 11, on which a U-shaped groove 611 is formed; a first pressing sheet 62, a second pressing sheet 63, and a pressing counterweight sheet 64 are sequentially fitted on the yarn guide ceramic eye 61, and the yarn is pressed between the first pressing sheet 62 and the second pressing sheet 63 at a certain height and passes through the U-shaped groove 611 on the yarn guide ceramic eye 61, thereby providing a certain pretension as needed. A fixing seat 65 is also provided on the upper shell 11, and a U-shaped clip 66 is connected between the fixing seat 65 and the yarn guide ceramic eye 61. The second pressing sheet 63 and the pressing counterweight sheet 64 can also be flipped along the U-shaped clip 66 onto the fixing seat 65 to adjust the pretension as needed.

[0050] Furthermore, in this embodiment, a protrusion extends from the outer wall of the convex ring 114 corresponding to the yarn exit position, forming the aforementioned sensor mounting part 112.

[0051] Furthermore, in this embodiment, a slot 116 is formed on the upper shell 11, and a pressing plane 1161 is formed on the inner bottom surface of the slot 116. A pressing arc surface 1162 is also formed in the middle of the pressing plane 1161. A retaining plate 117 is also provided on the side of the slot 116 opposite to its inner bottom surface. One end of the retaining plate 117 is hinged to the upper shell 11, and the other end is detachably connected to the upper shell 11 by a screw. A pressing protrusion 1171 is formed on the inner side of the retaining plate 117, and a pressing pin 1172 is threaded onto the pressing protrusion 1171. The tensioning device can be clamped onto vertical pipe fittings. If the pipe fitting is a square pipe, it is clamped by the clamping plane 1161 and the clamping protrusion 1171 on the inner side of the clamping plate 117; if the pipe fitting is a round pipe, it is clamped by the clamping arc surface 1162 and the clamping pin 1172 on the clamping plate 117. Thus, it can be adapted to various pipe fittings for installation.

[0052] As can be seen from the above, the tension device provided in this embodiment has the electronic control board located at the bottom of the tension generating unit, which facilitates the design and expansion of the electronic control board.

[0053] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A tensioning device, characterized in that include: Tension generating unit (2), which is installed inside the housing (1) and electrically connected to the control board (3), and is controlled by the control board (3) to work; The control board (3) is installed inside the housing (1) and is located at the bottom of the tension generating unit (2).

2. The tension device of claim 1, wherein, The outer shell (1) includes an upper shell (11) and a bottom cover (12). The bottom of the upper shell (11) has an opening. The tension generating unit (2) is installed inside the upper shell (11). The electronic control board (3) is installed on the bottom cover (12). The bottom cover (12) covers the opening at the bottom of the upper shell (11) for installation.

3. The tension device according to claim 2, characterized in that, The bottom cover (12) is made of metal; the top shell (11) is made of plastic.

4. The tension device according to claim 3, characterized in that, The bottom surface of the bottom cover (12) is provided with a number of nut posts (31), and the electrical control board (3) is installed by being supported by the number of nut posts (31).

5. The tension device according to claim 3 or 4, characterized in that, The bottom edge of the bottom cover (12) is bent toward the upper shell (11) to form a folded edge (121), and the inner side of the folded edge (121) forms the mounting space for the electronic control board (3).

6. The tension device according to claim 5, characterized in that, The folded edge (121) is also bent outward to form an installation edge (122), and the installation edge (122) is provided with a plurality of installation holes (1221), and the upper shell (11) is provided with a plurality of connecting posts (111).

7. The tension device according to claim 1, characterized in that, The tension generating unit (2) is vertically arranged, and the electronic control board (3) is horizontally arranged at the bottom of the tension generating unit (2). The electronic control board (3) is provided with a speed detection sensor corresponding to the tension generating unit (2).

8. The tension device according to claim 2, characterized in that, The upper shell (11) is also provided with a tension detection sensor for detecting the tension of the lead wire, and the tension detection sensor is electrically connected to the electronic control board (3).

9. The tension device according to claim 2, characterized in that, The upper shell (11) is also provided with a control switch (32) and an indicator light (33), which are electrically connected to the electronic control board (3).

10. The tension device according to claim 2, characterized in that, The tension device also includes a yarn guide wheel assembly (4), which is located above the tension generating unit (2) and is provided with torque by the tension generating unit (2). The tension generating unit (2) is a hysteresis device, which is suspended below the top surface of the upper shell (11) by mounting screws. The top surface of the upper shell (11) is provided with a countersunk hole (1143) for accommodating the mounting screws.

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