A spacer paper insertion mechanism

Abstract

The utility model relates to the technical field of film material winding, provide a spacer paper placement mechanism for conveying the spacer paper to each layer of film material between winding, and the spacer paper placement mechanism includes: the fixed frame, the both sides of fixed frame all are provided with a support, each support all rotatably sets up a sleeve, each sleeve all winds the spacer paper, wherein, the interval between two supports is adjustable to adapt to the film material of different width. Two spacer papers are arranged on the both sides of the film material width direction, and the outside edge of each spacer paper is kept in alignment with the corresponding side edge of the film material, and is continuously wound into each layer of film material along with the winding process. The film material is completed by the above -mentioned mode, because the spacer paper is arranged between each layer, makes the film layer keep the empty state, restrains the interlayer pressure accumulation and compression stress accumulation caused by the increase of the winding diameter, thereby prevents the soft coating on the film material surface to occur irreversible indentation, adhesion or deformation.

Description

Technical Field

[0001] This utility model belongs to the field of membrane material winding technology, specifically relating to a spacer paper insertion mechanism. Background Technology

[0002] For some thermoformable functional films, their surface coatings typically have flexible characteristics. The winding process is one of the key steps in production. During winding, the coating machine usually winds the film material directly onto a reel. A tension controller monitors the film tension (pull force) in real time and adjusts the speed or braking torque of the winding motor based on feedback signals to maintain constant tension.

[0003] However, as the roll diameter increases, the winding torque needs to be increased accordingly to maintain constant tension. This torque is transmitted layer by layer through the film, creating significant radial pressure near the core, resulting in large contact pressure between the film layers. This pressure, combined with the interlayer contact area, causes the frictional force to gradually increase and accumulates compressive stress within the roll material.

[0004] In flexible coating materials, such compressive stress can lead to irreversible plastic deformation of the coating through localized pressure or microslippage. This deformation is difficult to recover from during subsequent use, thus severely impacting the product's performance and appearance.

[0005] Existing technologies typically employ low-tension winding, which effectively reduces the overall tensile force and interlayer radial pressure of the film material. However, under conditions of high roll diameter or extremely soft coatings, sufficient compressive stress may still remain, leading to coating damage. Therefore, while this method can alleviate the problem, it cannot fundamentally eliminate the impact of compressive stress on the coating. Utility Model Content

[0006] To address the aforementioned shortcomings of existing technologies, the technical problem this invention aims to solve is to provide a spacer paper insertion mechanism. This mechanism involves simultaneously introducing the front ends of two spacer papers into the winding area at the beginning of the winding process, aligning the outer edges of the spacer papers with the corresponding edges of the film material throughout the winding process. Spacer papers are wound between each layer of film material, forming a width-direction separation structure that keeps adjacent film layers separated.

[0007] The technical solution adopted by this utility model to solve its technical problem is to propose a spacer paper insertion mechanism for conveying spacer paper between each layer of the wound film material. The spacer paper insertion mechanism includes:

[0008] Fixture;

[0009] The bracket has one bracket on each side of the fixing frame;

[0010] Each of the brackets is rotatably provided with a sleeve, and each sleeve is wound with the spacer paper for unwinding the spacer paper into the film winding area;

[0011] The spacing between the two supports is adjustable to adjust the distance between the two spacer sheets;

[0012] Two spacer sheets are respectively disposed on both sides of the width direction of the membrane material. The outer edge of each spacer sheet is aligned with the corresponding side edge of the membrane material and is continuously wound into the spacer sheets between each layer of the membrane material during the winding process, so as to keep the adjacent membrane layers in a state of separation.

[0013] In the aforementioned spacer paper insertion mechanism, each of the brackets is provided with a first guide wheel and a second guide wheel, and the spacer paper is sequentially wound around the first guide wheel and the second guide wheel.

[0014] In the aforementioned spacer paper insertion mechanism, a support rod is provided on the bracket, and a slider is provided on each bracket, the slider being connected to the support rod.

[0015] In the aforementioned spacer paper insertion mechanism, a lead screw is also provided on the fixing frame. The lead screw is arranged parallel to the support rod. An adjusting block is fixedly connected to each of the two brackets. Each adjusting block is provided with an internal threaded hole and is threadedly connected to the lead screw.

[0016] In the aforementioned spacer paper insertion mechanism, one end of the lead screw extends out of the fixed frame and is connected to an adjusting wheel, which is used to drive the lead screw to rotate.

[0017] When the lead screw rotates, it causes the adjusting blocks on both sides to move closer to or further apart from each other.

[0018] In the aforementioned spacer paper insertion mechanism, the external threads on both sides of the lead screw have opposite directions of rotation, while the internal threads of the two adjusting blocks have the same direction of rotation.

[0019] In the aforementioned spacer paper insertion mechanism, the external threads on the lead screw have the same direction of rotation, while the internal threads of the two adjusting blocks have opposite directions of rotation.

[0020] In the aforementioned spacer paper insertion mechanism, each of the brackets is fixed with a rotating shaft, and the sleeve is sleeved on the rotating shaft to provide support for the sleeve.

[0021] In the aforementioned spacer paper insertion mechanism, the sleeve is made of nylon.

[0022] In the aforementioned spacer paper insertion mechanism, the first guide wheel and the second guide wheel are made of polytetrafluoroethylene.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) At the beginning of the winding stage, the structural design ensures that the front ends of the two spacer sheets are introduced into the winding area simultaneously with the initial end of the membrane material, and the outer edges of the spacer sheets are continuously aligned with the corresponding edges of the membrane material during the winding process. Spacer sheets are wound between each layer of membrane material to form a separation structure in the width direction, keeping adjacent membrane layers in a state of separation. This structure effectively avoids direct contact between layers, significantly reduces interlayer friction and pressure transmission, and suppresses the accumulation of compressive stress caused by the increase in roll diameter, thereby preventing irreversible indentation, adhesion or deformation of the soft coating on the membrane material surface, and improving the quality and storage stability of the roll material.

[0025] (2) The precise adjustment of the distance between the two supports is achieved through the screw drive of the lead screw and the adjusting block. This structure allows for flexible adjustment of the support position according to the actual width of the membrane material, ensuring that the outer edges of the spacers on both sides are always precisely aligned with the corresponding edges of the membrane material. Therefore, this mechanism can be adapted to various specifications of membrane materials, improving the equipment's versatility and winding consistency.

[0026] (3) Each support is fixedly equipped with a rotating shaft, and the sleeve is detachably fitted onto the rotating shaft to form a modular unwinding structure. This design supports quick replacement of the spacer roll without disassembling the support or guide components, significantly improving maintenance efficiency. At the same time, the sleeve is made of nylon material, which has self-lubricating properties and a low coefficient of friction, enabling smooth rotation and reducing unwinding resistance and tension fluctuations; its wear-resistant and corrosion-resistant properties extend its service life, while its low noise and insulation properties improve the operating environment and reduce the risk of static electricity, further ensuring the cleanliness of the membrane surface and the stability of the transport. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this scheme.

[0028] Figure 2 yes Figure 1 A schematic diagram of the structure facing another direction.

[0029] Figure 3 yes Figure 2 A lateral view of the diagram.

[0030] Figure 4 This is a schematic diagram of the membrane material structure after it is rolled up in this scheme.

[0031] In the figure, 1 is the fixing frame; 2 is the bracket; 3 is the sleeve; 4 is the spacer paper; 5 is the first guide wheel; 6 is the second guide wheel; 7 is the support rod; 8 is the slider; 9 is the lead screw; 10 is the adjusting block; 11 is the adjusting wheel; 12 is the rotating shaft; and 13 is the gap between the film layers. Detailed Implementation

[0032] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] like Figures 1 to 4 As shown, this solution provides a spacer paper insertion mechanism for conveying spacer paper 4 between each layer of the wound film material. The spacer paper insertion mechanism includes: a fixed frame 1; a support 2, with a support 2 on each side of the fixed frame 1; and a sleeve 3, with a sleeve 3 rotatably mounted on each support 2, and spacer paper 4 wound on each sleeve 3 for unwinding spacer paper 4 into the film material winding area. The spacing between the two supports 2 is adjustable to adjust the spacing between the two spacer papers 4. The two spacer papers 4 are respectively disposed on both sides of the width direction of the film material, with the outer edge of each spacer paper 4 aligned with the corresponding side edge of the film material, and are continuously wound into each layer of the film material during the winding process to maintain a gap between adjacent film layers.

[0035] The fixing frame 1 is installed on the winding device of the coating machine. At the beginning of winding, the operator simultaneously introduces the front ends of the two spacer papers 4 into the winding area along with the initial end of the film material. After winding starts, the spacer papers and the film material are wound in synchronously to form the initial layer, and are continuously wound into the spacer paper between each layer of film material during the winding process; and the outer edge of the spacer paper 4 is always aligned with the corresponding edge of the film material. The film material wound in this way maintains a gap between each layer of film material due to the spacer paper 4 in the width direction. This significantly reduces interlayer friction and pressure transmission, suppresses the accumulation of compressive stress caused by the increase in roll diameter, thereby preventing irreversible indentation, adhesion or deformation of the soft coating on the film material surface, and improving the quality and storage stability of the roll material. The spacing between the two supports 2 can be flexibly adjusted according to the actual width of the film material to ensure that the outer edges of the spacer paper 4 on both sides are always precisely aligned with the corresponding edge of the film material. Therefore, the spacer paper insertion mechanism in this solution can be adapted to various specifications of film materials, improving the equipment's versatility and winding consistency.

[0036] "Spacer paper 4" is a common industry term; the actual material can be non-paper materials such as PET film. Spacer paper 4 uses PET film (polyethylene terephthalate film) as the material, which has excellent mechanical strength and tensile properties. It can withstand a certain tension during unwinding and winding without breaking, stretching, or tearing at the edges, ensuring its structural integrity and positional stability during continuous winding into the film layers. At the same time, the PET film has uniform thickness and a smooth surface, preventing localized indentations or misalignments caused by defects in the spacer material itself.

[0037] PET film has excellent dimensional stability, is less affected by temperature and humidity changes, and is not prone to heat shrinkage or moisture absorption deformation. Even during long-term winding or storage, it can maintain its original width and shape, thereby ensuring that the outer edge of the spacer paper 4 is always precisely aligned with the corresponding side edge of the film, improving winding neatness and yield.

[0038] PET film also has good temperature resistance (long-term operating temperature can reach above 120℃), making it suitable for coating, drying, and high-temperature winding processes. It is not easily softened, deformed, or releases impurities. It is chemically inert, resistant to acids, alkalis, solvents, and oils, and does not easily age. It is easy to clean and reuse, reducing production costs and meeting the requirements of green manufacturing and sustainable development.

[0039] In order to maintain the tension of the spacer paper 4 during the conveying process and ensure the consistency of its output path, each bracket 2 is provided with a first guide wheel 5 and a second guide wheel 6, and the spacer paper 4 passes around the first guide wheel 5 and the second guide wheel 6 in sequence.

[0040] By setting a first guide wheel 5 and a second guide wheel 6 on each support 2, the spacer paper 4 forms a stable transport path during unwinding. This structure helps maintain the tension uniformity of the spacer paper 4 during transport, reduces tension fluctuations caused by sudden path changes or dynamic disturbances, and avoids slackness, wrinkles, or misalignment. Simultaneously, the layout of the first guide wheel 5 and the second guide wheel 6 can be optimized according to the winding direction of the membrane material, ensuring that the output direction of the spacer paper 4 is consistent with the travel direction of the membrane material, thereby guaranteeing synchronous introduction and alignment of both during winding. Under the combined effect of stable tension and a consistent path, the outer edge of each spacer paper 4 can always remain aligned with the corresponding side edge of the membrane material, preventing deviation even during high-speed operation or start-stop phases, significantly improving the stability and edge neatness of the winding process.

[0041] To allow the bracket 2 to be adjustablely connected to the fixed frame 1, the fixed frame 1 is provided with a support rod 7 extending along the width direction of the membrane material; each bracket 2 is provided with a slider 8, which is slidably connected to the support rod 7 to form a guide structure, so that the bracket 2 can slide smoothly along the axial direction of the support rod 7, thereby realizing the guiding and supporting functions of position adjustment.

[0042] More preferably, the fixed frame 1 is also provided with a lead screw 9, which is arranged in a direction parallel to the support rod 7 and is rotatably installed on the fixed frame 1. An adjusting block 10 is fixedly connected to each of the two brackets 2. The adjusting block 10 is provided with an internal thread hole, and both adjusting blocks 10 are threadedly connected to the lead screw 9 to form a screw drive pair.

[0043] More preferably, one end of the lead screw 9 extends out of the fixed frame 1 and is connected to an adjusting wheel 11, which drives the lead screw 9 to rotate. When the adjusting wheel 11 is manually rotated, the lead screw 9 rotates accordingly. Under the limiting action of the threaded engagement and the bracket 2, the adjusting block 10 cannot rotate with the lead screw 9, but can only move along the axial direction of the lead screw 9, thereby driving the bracket 2 to slide along the support rod 7 via the slider 8, realizing the adjustment of the distance between the two brackets 2. As a result, the relative position between the spacer paper 4 wound on the two sleeves 3 is adjusted accordingly, so that its outer edge can be aligned with the corresponding side edge of the membrane material of different widths, realizing the adaptation of various specifications of membrane materials.

[0044] In one embodiment, the lead screw 9 is a counter-threaded lead screw 9, with its two external threads rotating in opposite directions, and the two adjusting blocks 10 having the same internal thread direction. When the lead screw 9 is rotated by the adjusting wheel 11, because the threads on both sides of the lead screw 9 rotate in opposite directions, the two adjusting blocks 10 will move synchronously in opposite directions, thereby achieving relative movement that brings them closer or further apart. This structure has the advantages of good synchronization, high adjustment accuracy, and simple operation, and is suitable for most application scenarios.

[0045] In another embodiment, the lead screw 9 can be configured with a one-way thread, and the internal threads of the two adjusting blocks 10 can be rotated in opposite directions. When the lead screw 9 is rotated by the adjusting wheel 11, since the internal threads of the two adjusting blocks 10 rotate in opposite directions, a reverse axial movement will be generated on the one-way thread lead screw 9, thereby realizing the relative movement of the bracket 2.

[0046] In another embodiment, two independent lead screws 9 can be provided on the fixing frame 1, each lead screw 9 having an adjusting block 10 threadedly connected to it, and each adjusting block 10 being fixedly connected to a corresponding bracket 2. By rotating the two lead screws 9 respectively, the positions of the brackets 2 on both sides can be adjusted independently, thereby accommodating membrane materials of different widths.

[0047] More preferably, each bracket 2 is fixedly provided with a rotating shaft 12, and a sleeve 3 is fitted onto each rotating shaft 12. By fixing the rotating shaft 12 to the bracket 2 and rotatably fitting the sleeve 3 onto the rotating shaft 12, the quick installation and replacement of the spacer paper roll 4 is achieved. When the spacer paper 4 is exhausted or needs to be changed to a different specification, simply pull out the empty roll along the axial direction or remove it entirely to insert a new roll of spacer paper 4, without disassembling other parts, significantly improving maintenance efficiency and operational convenience.

[0048] This structure allows the sleeve 3 and the spacer paper 4 rolls to rotate freely around the fixed rotating shaft 12, forming a stable rotation fulcrum. This effectively ensures coaxiality and rotational stability during the unwinding process, and avoids vibration, shaking, or tension fluctuations caused by eccentric rotation.

[0049] In addition, the rotating shaft 12 is fixed on the bracket 2, bearing the entire weight of the spacer paper roll 4 and the unwinding tension, and directly transferring the load to the bracket 2 and the fixed frame 1, which avoids the sleeve 3 or the core from bending, deforming or axially moving due to uneven force, thus improving the structural rigidity and operational reliability.

[0050] More preferably, the sleeve 3 is made of nylon material, which has excellent mechanical strength and toughness, and can withstand the weight of the spacer paper roll 4 and the radial pressure during unwinding, avoiding poor rotation or jamming due to compression deformation. At the same time, the low density of nylon material makes the sleeve 3 lightweight, which not only reduces the moment of inertia, which is beneficial to the dynamic response during start-up and shutdown, but also reduces the load on the rotating shaft 12 and the bracket 2, thus improving the structural durability.

[0051] Nylon material itself has self-lubricating properties and a low coefficient of friction, which can achieve smooth relative rotation between the sleeve 3 and the rotating shaft 12 without additional lubrication. This effectively reduces unwinding resistance and prevents tension fluctuations or stretching deformation of the spacer paper 4 caused by excessive friction. It is especially suitable for the stable conveying of thin and fragile spacer paper 4.

[0052] Furthermore, nylon possesses excellent wear resistance, and even under prolonged, frequent assembly / disassembly and continuous rotation conditions, it is not prone to producing wear debris or surface peeling, ensuring a long service life for sleeve 3 and reducing maintenance and replacement frequency. Its superior corrosion resistance also protects against the effects of moisture, weak acids and alkalis, or cleaning agents in the environment, making it suitable for various production environments and enhancing equipment adaptability.

[0053] Furthermore, the first guide wheel 5 and the second guide wheel 6 are made of polytetrafluoroethylene (PTFE), which has an extremely low coefficient of surface friction. This significantly reduces the conveying resistance of the spacer paper 4 as it passes around the guide wheels, avoiding the risk of tension fluctuations, stretching deformation, or tearing caused by excessive friction. Especially during high-speed winding or start-stop operations, the low friction characteristics help maintain the stability of the tension of the spacer paper 4, ensuring its smooth and continuous introduction into the winding area.

[0054] Polytetrafluoroethylene (PTFE) material has excellent non-stick properties, which can effectively prevent wrinkles or shifts on the surface of the spacer paper 4 due to adsorption and adhesion, avoid the "stick-slip" phenomenon between the guide wheel and the paper surface, and thus improve the smoothness and path consistency of the conveying process.

[0055] Furthermore, polytetrafluoroethylene (PTFE) possesses excellent chemical stability and corrosion resistance, enabling it to withstand the long-term effects of cleaning agents, solvents, and ambient moisture. It is not prone to aging or performance degradation, ensuring that the first guide wheel 5 and the second guide wheel 6 maintain smooth surfaces and dimensional stability during prolonged operation, extending their service life and reducing maintenance and replacement frequency. Its good temperature resistance also ensures that the equipment can operate reliably under different ambient temperatures or continuous heat generation conditions.

[0056] Polytetrafluoroethylene (PTFE) material has a smooth and dense surface with moderate hardness, which can provide sufficient support rigidity without causing mechanical damage such as scratches or indentations to the surface of the spacer paper 4. It is especially suitable for lightweight, fragile or high surface quality spacer paper 4 materials, effectively protecting their integrity and functional characteristics.

[0057] The materials for sleeve 3, first guide wheel 5, and second guide wheel 6 are not limited to nylon and polytetrafluoroethylene; other engineering plastics or metals with low coefficient of friction, wear resistance, and corrosion resistance can also be used.

[0058] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is 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 as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0059] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0060] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A spacer paper insertion mechanism for conveying spacer paper between each layer of wound film material, characterized in that, The spacer paper insertion mechanism includes: Fixture; The bracket has one bracket on each side of the fixing frame; Each of the brackets is rotatably provided with a sleeve, and each sleeve is wound with the spacer paper for unwinding the spacer paper into the film winding area; The spacing between the two supports is adjustable to adjust the distance between the two spacer sheets; Two spacer sheets are respectively disposed on both sides of the width direction of the membrane material. The outer edge of each spacer sheet is aligned with the corresponding side edge of the membrane material and is continuously wound into the spacer sheets between each layer of the membrane material during the winding process, so as to keep the adjacent membrane layers in a state of separation.

2. The spacer paper insertion mechanism as described in claim 1, characterized in that, Each of the brackets is provided with a first guide wheel and a second guide wheel, and the spacer paper is sequentially wrapped around the first guide wheel and the second guide wheel.

3. The spacer paper insertion mechanism as described in claim 1, characterized in that, The bracket is provided with a support rod, and each bracket is provided with a slider, which is connected to the support rod.

4. The spacer paper insertion mechanism as described in claim 3, characterized in that, The fixed frame is also provided with a lead screw, which is arranged parallel to the support rod. An adjustment block is fixedly connected to each of the two brackets. Each adjustment block is provided with an internal threaded hole and is threadedly connected to the lead screw.

5. The spacer paper insertion mechanism as described in claim 4, characterized in that, One end of the lead screw extends out of the fixed frame and is connected to an adjusting wheel, which is used to drive the lead screw to rotate; When the lead screw rotates, it causes the adjusting blocks on both sides to move closer to or further apart from each other.

6. The spacer paper insertion mechanism as described in claim 4, characterized in that, The external threads on both sides of the lead screw have opposite directions of rotation, while the internal threads of the two adjusting blocks have the same direction of rotation.

7. The spacer paper insertion mechanism as described in claim 4, characterized in that, The external threads on the lead screw have the same direction of rotation, while the internal threads of the two adjusting blocks have opposite directions of rotation.

8. The spacer paper insertion mechanism as described in claim 1, characterized in that, Each of the brackets is fixed with a rotating shaft, and the sleeve is sleeved on the rotating shaft to provide support for the sleeve.

9. The spacer paper insertion mechanism as described in claim 1, characterized in that, The sleeve is made of nylon.

10. The spacer paper insertion mechanism as described in claim 2, characterized in that, The first and second guide wheels are made of polytetrafluoroethylene.

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