fastening device

Abstract

The utility model discloses a fixing device relates to coiled material automation production technical field, and fixing device includes positioning subassembly, support subassembly and telescopic subassembly, wherein, support subassembly is set up on positioning subassembly, telescopic subassembly is set up on positioning subassembly, and with support subassembly drive connection, and the telescopic end of telescopic subassembly is driven to connect with support subassembly, to drive support subassembly and stretch or contract along the radial of coiled material.

Description

Technical Field

[0001] This utility model relates to the field of automated production technology of rolled materials, and in particular to a fixing device. Background Technology

[0002] An LCM (LCD Module), also known as a liquid crystal display module, is an assembly that combines liquid crystal display devices, connectors, peripheral circuits such as control and drive systems, backlight, cover glass, and structural components. With the continuous development of automated production technology, in order to improve production efficiency, reduce labor costs, and ensure product quality stability, various materials required for LCM production, such as FPC, backlight film, and cover glass, are often supplied in roll form.

[0003] However, in actual production, the diameter of the core inside these rolls is often not uniform. For example, the same type of FPC roll may have an inner diameter of 75mm, 100mm, 150mm, or other sizes depending on the supplier and batch. This necessitates the use of specific roll fixing devices (such as roll shafts, chucks, etc.) to stably support or rotate the roll so that the material handling components on the equipment can accurately peel or cut the required length of material from the roll. Utility Model Content

[0004] The main purpose of this invention is to provide a fixing device that solves the problem that existing clamping devices cannot adapt to rolls of different sizes.

[0005] To achieve the above objectives, the present invention provides a fixing device, which includes:

[0006] Positioning components;

[0007] Support component, movably mounted on the positioning component; and

[0008] A telescopic component is disposed on the positioning component and slidably connected to the support component, wherein the telescopic end of the telescopic component is drivenly connected to the support component. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0010] Figure 1 A schematic diagram of the structure of an embodiment of the fixing device provided by this utility model;

[0011] Figure 2 A partial structural schematic diagram of another embodiment of the fixing device provided by this utility model;

[0012] Figure 3 A partial structural schematic diagram of another embodiment of the fixing device provided by this utility model;

[0013] Figure 4 A partial structural schematic diagram of another embodiment of the fixing device provided by this utility model;

[0014] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0015] Explanation of icon numbers:

[0016] 100. Fixing device; 1. Drive assembly; 21. Positioning assembly; 211. Positioning plate; 212. Guide rod; 22. Support assembly; 221. Main support rod; 2211. Limiting groove; 222. Side support rod; 23. Telescopic assembly; 231. Telescopic cylinder; 232. Movable plate; 233. Movable rod; 3. Transmission assembly; 31. Active rotating plate; 32. Driven rotating plate; 33. First magnetic block; 34. Second magnetic block.

[0017] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0018] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0019] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0020] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0021] In actual production, the diameter of the core inside these rolls is often not uniform. For example, the inner diameter of the same type of FPC roll may be 75mm, 100mm, 150mm, or other sizes depending on the supplier and batch. This necessitates the use of specific roll fixing devices (such as roll shafts, chucks, etc.) to stably support and rotate the roll so that the material picking components on the equipment can accurately peel or cut the required length of material from the roll.

[0022] This utility model proposes a fixing device for feeding and unloading roll materials.

[0023] Please see Figure 1 and Figure 2 In one embodiment of this utility model, the fixing device 100 includes:

[0024] Positioning component 21;

[0025] Support component 22 is movably mounted on positioning component 21; and

[0026] The telescopic component 23 is disposed on the positioning component 21 and is slidably connected to the support component 22. The telescopic end of the telescopic component 23 is driven to be connected to the support component 22 so as to drive the support component 22 to extend or retract along the radial direction of the roll material.

[0027] The technical solution of this utility model divides the fixing device 100 into a positioning component 21, a support component 22, and a telescopic component 23. The roll material is sleeved on the outer periphery of the support component 22. The telescopic component 23 drives the support component 22 to extend or retract in the radial direction of the roll material, adjusting the effective support outer diameter of the support component 22, which can flexibly adapt to roll materials with different inner diameters. Users do not need to replace different fixing devices 100 according to the inner diameter of the roll material, thus improving the compatibility of the device with roll materials of different specifications.

[0028] Specifically, the positioning component 21 can be a disc with a central hole for mounting the support component 22 and the telescopic component 23; thus, the rotation of the positioning component 21 can drive the support component 22 to rotate synchronously. The support component 22 can be a multi-jaw chuck structure, with three or more jaws driven by the telescopic component 23 at the center of the chuck. Under the drive of the telescopic component 23, the multiple jaws can synchronously open outward or retract inward, changing their effective support diameter to adapt to different sizes of roll material. Of course, the support component 22 can also be a metal or plastic sleeve with a longitudinal opening, the opening connected by an elastic element (such as a spring plate), giving it a tendency to contract. The telescopic component 23 can be a screw with external threads passing through the center of the sleeve. When the screw is rotated, the protrusions or threads on it force the opening of the sleeve to expand, increasing the support diameter; rotating in the opposite direction relaxes it, and the sleeve recovers its contraction due to the elastic force of the elastic element. The telescopic component 23 can be a combination of a lead screw and a nut, with the lead screw rotating due to the force transmitted from the positioning component 21, and the nut moving along the axis of the lead screw. The support assembly 22 is fixedly connected to the nut, so the movement of the nut can precisely drive the support assembly 22 to adjust its diameter in the radial direction.

[0029] The specific working principle is as follows: When a roll of material with a specific inner diameter needs to be fixed, the current state of the support component 22 should be able to accommodate the inner hole of the roll. When it is necessary to replace it with a new roll of material with a different inner diameter, the telescopic component 23 starts to work. Its telescopic end pushes or pulls the support component 22. Under the force of the telescopic component 23, the support component 22 will extend (expand outward) or contract (shrink inward) along the radial direction of the roll. When the support component 22 is adjusted to match the inner diameter of the new roll, it is inserted into the roll, and the outer periphery of the support component 22 can then tightly abut against the inner wall of the roll, thereby achieving stable support for the roll. When it is necessary to remove the roll, simply reverse the operation of the telescopic component 23.

[0030] In the embodiments of this utility model, please refer to Figure 2 and Figure 3 The telescopic component 23 includes:

[0031] Telescopic cylinder 231 is mounted on positioning assembly 21;

[0032] Movable plate 232 is located on one side of telescopic cylinder 231 and is fixedly connected to the piston rod of telescopic cylinder 231; and

[0033] Movable rod 233, one end of which is rotatably connected to movable plate 232, and the other end of which is rotatably connected to support assembly 22;

[0034] The movable plate 232 extends or retracts along with the piston rod to drive the movable rod 233 to move, causing the support assembly 22 to extend or retract radially. When the support assembly is in the retracted state, the inner diameter of the support assembly is in the range of 50-65mm.

[0035] Specifically, the movable plate 232 can be a flat plate structure with reinforcing ribs, and it has holes for connecting to the piston rod and holes for hinged connection to the movable rod 233. The two ends of the movable rod 233 are hinged structures, one end is connected to the movable plate 232 by a pin, and the other end is connected to the support assembly 22 by a pin. This can change the angle between the movable rod 233 and the movable plate 232, as well as between the movable rod 233 and the support assembly 22, thereby adapting to changes in the path of the movable rod 233. When a larger inner diameter roll material needs to be replaced, the telescopic cylinder 231 extends, and the movable plate 232, under the action of the piston rod, begins to extend outward. The movable plate 232 drives the movable rod 233 to move, and the other end of the movable rod 233 pushes the support assembly 22 to extend outward, increasing the effective support diameter. When a smaller inner diameter roll material needs to be replaced, the telescopic cylinder 231 retracts, and the piston rod drives the movable plate 232 to move inward and retract. The movable plate 232 drives the movable rod 233 to move in the opposite direction, and the other end of the movable rod 233 pulls the support assembly 22 inward to close (retract) until the outer diameter of the support assembly 22 is suitable for the inner core of the smaller inner diameter roll material. Furthermore, at this time, the inner diameter of the support assembly 22 can be retracted to a range of 50-65mm, resulting in a smaller overall volume, which can accommodate the installation of small-sized roll materials. After the roll material is inserted, the support assembly 22 automatically or slightly fills the gap between the extension and the inner wall of the roll material, thus providing stable support.

[0036] In the embodiments of this utility model, please refer to Figure 4 The support components 22 are provided in at least two locations, and the at least two support components 22 are evenly spaced along the outer periphery of the positioning component 21. A single support component 22 may easily cause swaying or insufficient support when the roll material is radially adjusted or bears the weight of the roll material, especially when the roll material is heavy or has a large diameter. By using at least two (e.g., three or four) support components 22 and distributing them evenly, the inner core of the roll material can be supported simultaneously from multiple directions, and the weight of the roll material and any lateral forces that may exist can be evenly distributed. This multi-point support method greatly improves the stability of the roll material in a fixed state.

[0037] In the embodiments of this utility model, please refer to Figure 2 and Figure 4 Support component 22 includes:

[0038] The main support rod 221 is arranged along the length of the telescopic cylinder 231; and

[0039] Side support rods 222 are provided at both ends of the main support rod 221. The end of the side support rod 222 away from the main support rod 221 is rotatably connected to the positioning component 21. One end of the movable rod 233 is rotatably connected to the side support rod 222, and the other end of the movable rod 233 is rotatably connected to the movable plate 232.

[0040] Specifically, in this design, the support assembly 22 uses a frame structure formed by the main support rod 221 and the side support rod 222 to support the roll material. The movable rod 233 can be hinged to the middle or other positions of the side support rod 222. The connections between the main support rod 221 and the side support rod 222, as well as between the side support rod 222 and the movable rod 233, can all be achieved using a pin-connected rotating connection. Damping rings or similar structures can also be provided at the connection points to limit the rotation angle between the two, ensuring that the main support rod 221 and the side support rod 222 only extend and retract accordingly when the telescopic assembly 23 is in operation. In this design, the swinging of the movable rod 233 causes the main support rod 221 and the side support rod 222 to form a relatively defined motion trajectory. The movable rod 233, the main support rod 221, and the side support rod 222 can be made of cylindrical rods, rectangular tubes, or I-beams. The included angle between the main support rod 221 and the side support rod 222, as well as the included angle between the movable rod 233 and the side support rod 222, will dynamically change according to the specific extension and contraction states.

[0041] In the embodiments of this utility model, please refer to Figure 1 The fixing device 100 also includes a drive assembly 1, which is located on one side of the positioning assembly 21 and is drivenly connected to the positioning assembly 21. The drive assembly 1 can be a combination of a motor and gears. The motor shaft is connected to the positioning assembly 21 through a gear or worm gear assembly. When the motor rotates, it precisely drives the positioning assembly 21 to rotate a certain angle through gear transmission, thereby realizing the feeding and unloading of the roll material.

[0042] In the embodiments of this utility model, please refer to Figure 1 and Figure 2 The positioning assembly 21 includes a positioning plate 211, which is positioned close to the support assembly 22. Both the support assembly 22 and the telescopic assembly 23 are mounted on the positioning plate 211. The positioning plate 211 can be a circular or square plate with mounting holes. The side support rod 222 and the movable rod 233 can be fixed to the positioning plate 211 by pins. The fixed end of the telescopic cylinder 231 can be installed in the central area or edge of the positioning plate 211 by nuts and bolts, and its telescopic end is connected to the movable rod 233 by a connecting rod or directly.

[0043] In specific implementation, to improve the structural strength of the positioning component 21, the positioning plate 211 can be provided in two pieces, a front plate and a rear plate. The front plate is used for driving connection with the driving component 1, and the rear plate is set away from the driving component 1. A telescopic cylinder 231 is fixedly provided on the side of the rear plate facing the front plate. The piston rod of the telescopic cylinder 231 is drivenly connected to the movable rod 233, so that the movable plate 232 is movably positioned between the telescopic cylinder 231 and the front plate. In addition, multiple guide rods 212 can be provided to guide the movement of the movable plate 232. The two ends of the guide rods 212 are used to connect the front plate and the rear plate respectively, and the movable plate 232 passes through the guide rods 212. Under the drive of the piston rod, the movable plate 232 makes linear reciprocating motion along the axial direction of the guide rods 212.

[0044] In the embodiments of this utility model, please refer to Figure 4 and Figure 5 For roll materials requiring loading and unloading, a limiting protrusion (not shown) can be provided on the inner wall. The main support rod 221 has a limiting groove 2211, which extends along the length of the main support rod 221, and the limiting protrusion is embedded in the limiting groove 2211. The limiting protrusion can be cylindrical, square, or triangular in shape. It can be a rigid structure integrally formed with the inner core of the roll material, or a flexible structure such as soft rubber or sponge adhered to the inner wall. The limiting groove 2211 is designed to match the limiting protrusion, and can be a continuous long strip groove or multiple discontinuous grooves. Through the cooperation of the limiting protrusion and the limiting groove 2211, a precise reference is provided for the axial (along the length of the roll material) positioning of the roll material on the support assembly 22, preventing axial movement or rotation of the roll material during the radial expansion and contraction of the support assembly 22, and ensuring that the roll material always remains in the correct position.

[0045] In the embodiments of this utility model, please refer to Figure 1 The fixing device 100 also includes a transmission assembly 3, which is located between the drive assembly 1 and the positioning assembly 21, and connects the drive assembly 1 and the positioning assembly 21. The transmission assembly 3 can be a synchronous belt drive, with a drive pulley mounted on the output shaft of the drive assembly 1 (e.g., a servo motor) and a driven pulley mounted on the connecting shaft of the positioning assembly 21, connected by a synchronous belt. The rotation of the drive pulley drives the synchronous belt, which in turn drives the driven pulley and the positioning assembly 21 to rotate. Alternatively, the transmission assembly 3 can also be a rack and pinion drive, with the drive assembly 1 (usually a motor) connected to a gear, and the positioning assembly 21 having a rack meshing with it on its circumference or side. The rotation of the gear drives the positioning assembly 21 to rotate.

[0046] In the embodiments of this utility model, please refer to Figure 2 and Figure 3 The transmission assembly 3 includes:

[0047] The active converter plate 31 is fixedly connected to the output end of the drive assembly 1; and

[0048] The driven rotating plate 32 is spaced apart from the driving rotating plate 31 on the side away from the driving component 1. The driven rotating plate 32 is connected to the driving rotating plate 31 in a transmission manner and is fixedly connected to the positioning component 21.

[0049] Specifically, in this embodiment, the transmission assembly 3 includes a driving rotating plate 31 and a driven rotating plate 32 connected by a drive mechanism, for example, by magnetic force. During operation, the drive assembly 1 is activated first, and its output drives the driving rotating plate 31, which is fixedly connected to it, to rotate. The rotating magnetic field generated by the driving rotating plate 31 attracts and drives the driven rotating plate 32, which is magnetically connected to it, to rotate synchronously. The driven rotating plate 32 is fixedly connected to the positioning assembly 21, so the positioning assembly 21 also rotates accordingly. The rotation of the positioning assembly 21 drives the evenly distributed support assemblies 22 on it to rotate together, thereby simplifying the loading and unloading process of the roll material. The driving rotating plate 31 can be a disc structure with a flange, directly fastened to the output shaft of the drive assembly 1 by bolts. The driven rotating plate 32 can be connected to the rotating shaft of the positioning assembly 21 through a keyway and a shoulder, ensuring coaxiality and reliable torque transmission.

[0050] It is worth noting that during the unloading process of the roll material, in addition to the drive assembly 1 driving the active rotating plate 31 and the driven rotating plate 32 to rotate synchronously, the traction force of the roll material is also required from external equipment to jointly achieve continuous unloading of the roll material; when the unloading of the roll material stops, the traction force of the external equipment on the material on the roll material stops, the driven rotating plate 32 stops rotating, and the continued rotation of the drive assembly 1 does not affect the stopping of the driven rotating plate 32.

[0051] In the embodiments of this utility model, please refer to Figure 2 and Figure 3 The transmission assembly 3 also includes a first magnetic block 33 disposed on the active rotating plate 31 and a second magnetic block 34 disposed on the driven rotating plate 32. Both the first magnetic block 33 and the second magnetic block 34 are arranged in an array, such as a circular array or a rectangular array, to enhance the magnetic attraction between them. Furthermore, the magnetic properties of the first magnetic block 33 and the second magnetic block 34 on their opposite sides are different. When the drive assembly 1 rotates, it drives the active rotating plate 31, which is fixedly connected to it, to rotate. The first magnetic block 33 on the active rotating plate 31 rotates accordingly. Because the magnetic properties of the first magnetic block 33 and the second magnetic block 34 on the driven rotating plate 32 are different, the strong magnetic attraction between them causes the driven rotating plate 32 to rotate as well. The first magnetic block 33 and the second magnetic block 34 can be permanent magnets, such as neodymium iron boron (NdFeB) or ferrite, and can be cylindrical, block-shaped, or tile-shaped, embedded in specific grooves in the active rotating plate 31 and the driven rotating plate 32.

[0052] In the embodiments of this utility model, please refer to Figure 2 and Figure 3 The first magnetic blocks 33 are arranged in a circular array along the end face of the active rotating plate 31 towards the driven rotating plate 32. Similarly, the second magnetic blocks 34 are also arranged in a circular array along the end face of the driven rotating plate 32 towards the active rotating plate 31. The driven rotating plate 32 is fixedly connected to the positioning component 21, for example, by bolting or welding. The number of the first magnetic blocks 33 and the second magnetic blocks 34 can be set to be equal, both arranged in a circular array and corresponding one-to-one. In this way, the magnetic force between the active rotating plate 31 and the driven rotating plate 32 is no longer point-to-point or line-to-line, but a uniform attraction between surfaces. This circular array distribution greatly increases the effective contact area and the distribution range of magnetic lines of force, enabling a more stable and uniform transmission of the torque of the driving component 1 to the positioning component 21.

[0053] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A fixing device, characterized in that, The fixing device includes: Positioning components; Support component, movably mounted on the positioning component; and A telescopic component is disposed on the positioning component and slidably connected to the support component, wherein the telescopic end of the telescopic component is drivenly connected to the support component.

2. The fixing device as described in claim 1, characterized in that, The telescopic component includes: A telescopic cylinder is mounted on the positioning assembly; A movable plate, located on one side of the telescopic cylinder, is fixedly connected to the piston rod of the telescopic cylinder; and A movable rod, one end of which is rotatably connected to the movable plate, and the other end of which is rotatably connected to the support assembly; The movable plate extends or retracts along with the piston rod to drive the movable rod to move, causing the support assembly to extend or retract radially. When the support assembly is in the retracted state, the inner diameter of the support assembly is in the range of 50-65mm.

3. The fixing device as described in claim 2, characterized in that, The support components are provided in at least two, and the at least two support components are evenly spaced along the outer periphery of the positioning component.

4. The fixing device as described in claim 3, characterized in that, The support components include: The main support rod is arranged along the length of the telescopic cylinder; and A side support rod is provided at each end of the main support rod. The end of the side support rod away from the main support rod is rotatably connected to the positioning assembly. One end of the movable rod is rotatably connected to the side support rod, and the other end of the movable rod is rotatably connected to the movable plate.

5. The fixing device as described in claim 4, characterized in that, The main support rod is provided with a limiting groove, which extends along the length of the main support rod.

6. The fixing device as described in claim 1, characterized in that, The fixing device further includes a driving component, which is located on one side of the positioning component and is driven to the positioning component.

7. The fixing device as described in claim 6, characterized in that, The fixing device further includes a transmission assembly, which includes: An active converter plate is fixedly connected to the output end of the drive component; and The driven rotating plate is spaced apart on the side of the active rotating plate away from the driving component. The driven rotating plate is connected to the active rotating plate in a transmission manner and is fixedly connected to the positioning component.

8. The fixing device as described in claim 7, characterized in that, The transmission assembly further includes a first magnetic block disposed on the active rotating plate and a second magnetic block disposed on the driven rotating plate. The first magnetic block and the second magnetic block are arranged in an array. The magnetism of the side of the first magnetic block facing the second magnetic block is different from the magnetism of the side of the second magnetic block facing the first magnetic block.

9. The fixing device as described in claim 8, characterized in that, The first magnetic blocks are arranged in a circular array along the end face of the active rotating plate toward the driven rotating plate; and / or, the second magnetic blocks are arranged in a circular array along the end face of the driven rotating plate toward the active rotating plate, and the driven rotating plate is fixedly connected to the positioning component.

10. The fixing device as described in any one of claims 1 to 9, characterized in that, The positioning component includes a positioning plate, which is disposed close to the support component, and both the support component and the telescopic component are mounted on the positioning plate.

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