Passive unwinding device of pre-coating film splitting machine

Abstract

The utility model relates to the technical field of related equipment of pre-coating film splitting machines, and one embodiment of the utility model provides a passive unwinding device of a pre-coating film splitting machine, the passive unwinding device comprises a frame body and a mounting shaft bracket, the mounting shaft bracket is rotatably connected in the frame body, a mounting limiting assembly is arranged on the frame body, and the mounting limiting assembly is arranged on the frame body. The first rotating roller, the second rotating roller and the third rotating roller are all rotationally connected to the surface of the frame body, the tension adjusting assembly is arranged outside the frame body and comprises a long hole, the long hole is formed in the surface of the frame body, a driving motor is installed on the outer surface of the frame body, a driving gear is arranged at the output end of the driving motor, and a fixing frame is fixedly connected to the outer surface of the frame body. A swing frame is rotationally connected into the fixing frame through a rotating shaft. According to the technical scheme, the technical problems that in the prior art, the unwinding tension cannot be well adjusted, the thin film is prone to deformation due to the fact that the unwinding tension is too large, the thin film is prone to deformation due to the fact that the unwinding tension is too small, and conveying and follow-up manufacturing of the thin film are not facilitated are solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of pre-coated film slitting machines, specifically to a passive unwinding device for a pre-coated film slitting machine. Background Technology

[0002] Pre-coated film refers to a process in which a thin film is pre-adhesive-coated, rewound, and then laminated with printed materials. First, a pre-coated film processing plant applies adhesive to the film according to the specifications and size required for the application, then rewound it for the user to choose from, and finally laminates it with the printed materials. Because of this thin, transparent film layer, the surface of the printed materials is smoother and glossier, thus improving the gloss and durability of the print, making the colors more vibrant and three-dimensional, while also providing waterproofing, stain resistance, abrasion resistance, crease resistance, and chemical corrosion resistance.

[0003] There are currently two main unwinding methods for pre-coated film slitting machines: active unwinding and passive unwinding. Compared to active unwinding, passive unwinding can guarantee a certain unwinding tension, thus ensuring stable unwinding operation. However, current passive unwinding devices cannot effectively adjust the unwinding tension. Too much unwinding tension can easily deform the film, while too little unwinding tension can also easily deform the film, which is detrimental to film transport and subsequent processing.

[0004] Therefore, improvements have been made to address the aforementioned issues. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a passive unwinding device for a pre-coated film slitting machine, which solves the technical problems in the prior art where the unwinding tension cannot be well adjusted, and where too much unwinding tension easily causes film deformation, while too little unwinding tension easily causes film deformation, which is not conducive to film transport and subsequent manufacturing.

[0006] According to one aspect, at least one embodiment of the present disclosure provides a passive unwinding device for a pre-coated film slitting machine, comprising:

[0007] The frame and the mounting bracket, wherein the mounting bracket is rotatably connected to the frame;

[0008] The installation limiting component is disposed on the frame;

[0009] The frame consists of a first rotating roller, a second rotating roller, a third rotating roller, and a tension adjusting assembly. The first rotating roller, the second rotating roller, and the third rotating roller are all rotatably connected to the surface of the frame, and the tension adjusting assembly is disposed outside the frame.

[0010] The tension adjustment component includes an elongated hole formed on the surface of the frame. A drive motor is mounted on the outer surface of the frame, and a drive gear is provided at the output end of the drive motor. A fixed frame is fixedly connected to the outer surface of the frame, and a swing frame is rotatably connected inside the fixed frame via a rotating shaft.

[0011] As a further technical solution, a transmission gear is provided on the rotating shaft of the swing frame, the drive gear meshes with the transmission gear, a telescopic cylinder is installed on the swing frame, and an anti-slip block is provided at the output end of the telescopic cylinder.

[0012] As a further technical solution, one end of the swing frame passes through the elongated hole and is located at the top of the first rotating roller. A base plate is provided at the bottom of the swing frame, and a pair of rolling pressure rods are rotatably connected to both opposite end faces of the base plate.

[0013] As a further technical solution, a second cylinder is provided at both ends of the top of the swing frame, and a connecting plate is provided at the output end of the second cylinder. A pair of round rods are movably connected inside the connecting plate. A friction plate is provided at the lower end of the round rods. The friction plate is attached to the surface of the rolling pressure rod, and a spring is fitted on the round rod.

[0014] As a further technical solution, the installation limiting component includes a fixed sleeve, which is fixed to the surface of the frame. A third cylinder is provided inside the fixed sleeve, and a movable sleeve is provided at the output end of the third cylinder.

[0015] As a further technical solution, one end of the movable sleeve is movably fitted inside the fixed sleeve, the output end of the third cylinder is provided with a connecting block, the connecting block is inserted into the inner end face of the movable sleeve, and a connecting hole is opened on the outer end face of the movable sleeve.

[0016] As a further technical solution, a stud is inserted into the connecting hole, one end of the stud is screwed into the connecting block, one end of the movable sleeve is fixedly connected to a sleeve frame, and a rotating disk is rotatably connected to the surface of the sleeve frame.

[0017] As a further technical solution, both the sleeve and the rotating disk are circular ring structures.

[0018] As a further technical solution, the base plate has an arc-shaped transition structure, and the arc of the base plate surface is the same as the arc of the surface of the first rotating roller.

[0019] As a further technical solution, baffles are provided at both ends of the surface of the first rotating roller.

[0020] The beneficial effects of the embodiments disclosed herein are as follows:

[0021] 1. In this disclosure, the beneficial effect of the tension adjustment component is that the cooperation of the drive motor, drive gear and transmission gear allows the swing frame to swing flexibly and adjust its relative position with the first rotating roller. The telescopic cylinder and anti-slip block can fix the swing frame and ensure the stability of the adjusted position. The rolling pressure rod and the base plate assist in adjusting the tension between the pre-coated film and the first rotating roller. The second cylinder, round rod, friction plate and spring cooperate with each other to precisely control the tension by changing the pressure of the friction plate on the rolling pressure rod, so as to avoid the pre-coated film from deforming due to excessive or insufficient tension, and ensure the conveying quality of the pre-coated film and subsequent production.

[0022] 2. In this disclosure, the beneficial effect of the installation limiting component is that the combination of the fixed sleeve, the third cylinder and the movable sleeve can adjust the position of the sleeve frame and the rotating disk according to the size of the pre-coated film roll. The design of the connecting block, stud and connecting hole not only ensures the stability of the connection between the movable sleeve and the third cylinder, but also facilitates disassembly and maintenance. The annular sleeve frame and the rotating disk can be tightly fitted on the outside of the mounting shaft frame, effectively pressing the pre-coated film roll, enhancing the stability of the pre-coated film roll during the unwinding process, avoiding its shaking or deviation, and improving the reliability of the unwinding device. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0024] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0025] Figure 2 This is an isometric drawing of the present disclosure;

[0026] Figure 3 This is an isometric sectional view of the present disclosure;

[0027] Figure 4 Appendix to this disclosure Figure 1 Enlarged view of part A in the middle;

[0028] In the diagram: 1. Frame; 2. Mounting shaft bracket; 3. First rotating roller; 4. Second rotating roller; 5. Third rotating roller; 6. Tension adjustment assembly; 6-1. Elongated hole; 6-2. Drive motor; 6-3. Drive gear; 6-4. Fixed frame; 6-5. Swing frame; 6-6. Transmission gear; 6-7. Telescopic cylinder; 6-8. Anti-slip block; 6-9. Base plate; 6-10. Rolling pressure rod; 6-11. Second cylinder; 6-12. Connecting plate; 6-13. Round rod; 6-14. Friction plate; 6-15. Spring; 7. Mounting limit assembly; 7-1. Fixed sleeve; 7-2. Third cylinder; 7-3. Movable sleeve; 7-4. Connecting block; 7-5. Connecting hole; 7-6. Stud; 7-7. Sleeve frame; 7-8. Rotating disk; 8. Baffle. Detailed Implementation

[0029] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0030] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0031] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0032] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0034] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] like Figures 1-4 As shown, it illustrates a passive unwinding device for a pre-coated film slitting machine according to an embodiment of the present disclosure, comprising:

[0036] The frame 1 and the mounting bracket 2 are rotatably connected inside the frame 1;

[0037] Install limit component 7, which is set on frame 1;

[0038] The first rotating roller 3, the second rotating roller 4, the third rotating roller 5, and the tension adjusting component 6 are all rotatably connected to the surface of the frame 1, and the tension adjusting component 6 is located outside the frame 1.

[0039] The tension adjustment component 6 includes an elongated hole 6-1, which is formed on the surface of the frame 1. A drive motor 6-2 is mounted on the outer surface of the frame 1, and a drive gear 6-3 is provided at the output end of the drive motor 6-2. A fixed frame 6-4 is fixedly connected to the outer surface of the frame 1. A swing frame 6-5 is rotatably connected to the fixed frame 6-4 via a rotating shaft. A transmission gear 6-6 is provided on the rotating shaft of the swing frame 6-5, and the drive gear 6-3 meshes with the transmission gear 6-6. A telescopic cylinder 6-7 is mounted on the swing frame 6-5, and an anti-slip block 6-8 is provided at the output end of the telescopic cylinder 6-7. -5 One end passes through the elongated hole 6-1 and is located at the top of the first rotating roller 3. The bottom of the swing frame 6-5 is provided with a base plate 6-9. A pair of rolling pressure rods 6-10 are rotatably connected to the opposite end faces of the base plate 6-9. The top two ends of the swing frame 6-5 are provided with second cylinders 6-11. The output end of the second cylinder 6-11 is provided with a connecting plate 6-12. A pair of round rods 6-13 are movably connected inside the connecting plate 6-12. A friction plate 6-14 is provided at the lower end of the round rods 6-13. The friction plate 6-14 is attached to the surface of the rolling pressure rods 6-10. A spring 6-15 is fitted on the round rods 6-13.

[0040] In some examples, to achieve adjustable tension during the release of the pre-coated film, a tension adjustment component 6 is designed. This component includes an elongated hole 6-1 formed on the surface of the frame 1. A drive motor 6-2 and a drive gear 6-3 are mounted on the outside of the frame 1 as the basic power source. A fixed frame 6-4 is fixedly connected to the outer surface of the frame 1. Inside the fixed frame 6-4, a swing frame 6-5 is rotatably connected via a rotating shaft. A transmission gear 6-6 is provided on the rotating shaft of the swing frame 6-5, and the drive gear 6-3 meshes with the transmission gear 6-6. When the drive motor 6-2 operates, the drive gear 6-3 rotates, driving the transmission gear 6-6, which in turn allows the swing frame 6-5 to swing to the left and right. The rotation axes of the drive motor 6-2 and the swing frame 6-5 are on the same axis. The telescopic cylinder 6-7 installed on the swing frame 6-5 has an anti-slip block 6-8 at its output end. The telescopic cylinder 6-7 can control the anti-slip block 6-8 to support the frame body 1, thus fixing the swing frame 6-5. One end of the swing frame 6-5 passes through the elongated hole 6-1 and is located on top of the first rotating roller 3. The bottom plate 6-9 of the 6-5 has a pair of rolling pressure rods 6-10 rotatably connected to its two opposite ends. The rolling pressure rods 6-10 press the coating film onto the surface of the first conveying roller during transport, thus assisting in tension adjustment. The top of the swing frame 6-5 has two second cylinders 6-11 at both ends, with their output ends connected to a connecting plate 6-12. A pair of round rods 6-13 are movably fitted inside the connecting plate 6-12. Friction plates 6-14 at the lower ends of the round rods 6-13 are attached to the surface of the rolling pressure rods 6-10. The spring 6-15 mounted on the rod 6-13 provides pressure, and the friction plate 6-14 is attached to the surface of the rolling pressure rod 6-10. The friction increases the resistance, which slows down the rotation of the rolling pressure rod 6-10 and increases the gripping force on the coating film, thereby increasing the tension. The pressure can also be increased by the second cylinder 6-11, effectively controlling the tension changes during conveying. The swing frame 6-5 can also control the angle of the base plate 6-9. The larger the swing angle of the base plate 6-9, the higher the downward pressure on the coating film, and it can also increase the tension.

[0041] like Figures 1-4 As shown, this embodiment proposes an installation limiting component 7 including a fixed sleeve 7-1, which is fixed to the surface of the frame 1. A third cylinder 7-2 is provided inside the fixed sleeve 7-1. A movable sleeve 7-3 is provided at the output end of the third cylinder 7-2. One end of the movable sleeve 7-3 is movably fitted into the fixed sleeve 7-1. A connecting block 7-4 is provided at the output end of the third cylinder 7-2. The connecting block 7-4 is inserted into the inner end face of the movable sleeve 7-3. A connecting hole 7-5 is opened on the outer end face of the movable sleeve 7-3. A stud 7-6 is inserted into the connecting hole 7-5. One end of the stud 7-6 is screwed into the connecting block 7-4. A sleeve frame 7-7 is fixedly connected to one end of the movable sleeve 7-3. A rotating disk 7-8 is rotatably connected to the surface of the sleeve frame 7-7.

[0042] In some examples, to enhance the stability of the pre-coated film roll rotation, a mounting limiting component 7 is designed. This component includes a fixed sleeve 7-1 fixed to the surface of the frame 1. The fixed sleeve 7-1 is located directly below the mounting shaft bracket 2. A third cylinder 7-2 is installed inside the fixed sleeve 7-1. The output end of the third cylinder 7-2 is connected to a movable sleeve 7-3. One end of the movable sleeve 7-3 is movably fitted inside the fixed sleeve 7-1, allowing it to extend and retract under the drive of the third cylinder 7-2. A connecting block 7-4 is also provided at the output end of the third cylinder 7-2. The connecting block 7-4 is inserted into the inner end face of the movable sleeve 7-3. A connecting hole 7-5 is provided on the outer end face of the movable sleeve 7-3. A stud 7-6 is inserted into the connecting hole 7-5. One end of the stud 7-6 is screwed into the connecting block 7-4. The movable sleeve 7-3 is securely connected to the output end of the third cylinder 7-2 using a split connection method, which also facilitates disassembly, maintenance or replacement when needed. The other end of the movable sleeve 7-3 is fixedly connected to the sleeve frame 7-7. A rotating disk 7-8 is rotatably connected to the surface of the sleeve frame 7-7. The sleeve frame 7-7 and the rotating disk 7-8 are fitted onto the outside of the mounting shaft frame 2, which can press the pre-coated film roll onto the mounting shaft frame 2. When loading and unloading the coating film roll by rotating the rotating disk 7-8 with the coating film roll, the rotating disk 7-8 can be controlled by the third cylinder 7-2 to move away from the mounting shaft frame 2.

[0043] For example, such as Figure 3 As shown, both the sleeve 7-7 and the rotating disk 7-8 are circular ring structures.

[0044] In some examples, the annular structure allows it to fit over the outside of the mounting bracket 2, facilitating adjustment according to the size of the pre-coated film roll.

[0045] For example, such as Figure 1 As shown, the base plate 6-9 has an arc-shaped transition structure, and the surface curvature of the base plate 6-9 is the same as the surface curvature of the first rotating roller 3.

[0046] In some examples, the arc-shaped transition structure allows the two rolling pressure bars 6-10 to remain pressed down, keeping the pre-coated film in contact with the surface of the first rotating roller 3.

[0047] For example, such as Figure 1 As shown, baffles 8 are provided at both ends of the surface of the first rotating roller 3.

[0048] In some examples, baffles 8 are provided to limit the pre-coated film and prevent skewing during transport.

[0049] In actual use: The pre-coated film roll is installed on the mounting frame 2. The third cylinder 7-2 is activated to retract the movable sleeve 7-3. The sleeve 7-7 and the rotating disk 7-8 press the pre-coated film roll tightly on the mounting frame 2. The pre-coated film passes sequentially around the first rotating roller 3, the second rotating roller 4, and the third rotating roller 5. The drive motor 6-2 is activated, and the drive gear 6-3 drives the transmission gear 6-6 to swing the swing frame 6-5. After adjusting the position of the swing frame 6-5, the telescopic cylinder 6-7 is activated to support the anti-slip block 6-8 on the surface of the frame 1 to fix the swing frame 6-5. As needed, the second cylinder 6-11 is activated to adjust the pressure of the friction plate 6-14 on the rolling pressure rod 6-10. The tension between the pre-coated film and the first rotating roller 3 is adjusted by using the rolling pressure rod 6-10 and the base plate 6-9. During the unwinding process, the conveying tension of the coated film is adjusted by the pressure to ensure stable conveying of the pre-coated film.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A passive unwinding device for a pre-coated film slitting machine, characterized in that, include: The frame (1) and the mounting bracket (2) are rotatably connected inside the frame (1); Installation limiting component (7), which is disposed on the frame (1); The first rotating roller (3), the second rotating roller (4), the third rotating roller (5), and the tension adjusting component (6) are rotatably connected to the surface of the frame (1), and the tension adjusting component (6) is disposed outside the frame (1). The tension adjustment component (6) includes an elongated hole (6-1) which is formed on the surface of the frame (1). A drive motor (6-2) is installed on the outer surface of the frame (1). A drive gear (6-3) is provided at the output end of the drive motor (6-2). A fixed frame (6-4) is fixedly connected to the outer surface of the frame (1). A swing frame (6-5) is rotatably connected inside the fixed frame (6-4) via a rotating shaft.

2. The passive unwinding device of a pre-coated film slitting machine according to claim 1, characterized in that, The swing frame (6-5) has a transmission gear (6-6) on its rotating shaft. The drive gear (6-3) meshes with the transmission gear (6-6). The swing frame (6-5) is equipped with a telescopic cylinder (6-7), and the output end of the telescopic cylinder (6-7) is equipped with an anti-slip block (6-8).

3. The passive unwinding device of a pre-coated film slitting machine according to claim 2, characterized in that, One end of the swing frame (6-5) passes through the elongated hole (6-1) and is located at the top of the first rotating roller (3). The bottom of the swing frame (6-5) is provided with a base plate (6-9), and a pair of rolling pressure rods (6-10) are rotatably connected to the opposite end faces of the base plate (6-9).

4. The passive unwinding device of a pre-coated film slitting machine according to claim 3, characterized in that, The swing frame (6-5) is equipped with a second cylinder (6-11) at both ends of its top. The output end of the second cylinder (6-11) is equipped with a connecting plate (6-12). A pair of round rods (6-13) are movably connected inside the connecting plate (6-12). A friction plate (6-14) is provided at the lower end of the round rod (6-13). The friction plate (6-14) is attached to the surface of the rolling pressure rod (6-10). A spring (6-15) is fitted on the round rod (6-13).

5. The passive unwinding device of a pre-coated film slitting machine according to claim 1, characterized in that, The installation limiting component (7) includes a fixed sleeve (7-1), which is fixed to the surface of the frame (1). A third cylinder (7-2) is provided inside the fixed sleeve (7-1), and a movable sleeve (7-3) is provided at the output end of the third cylinder (7-2).

6. The passive unwinding device of a pre-coated film slitting machine according to claim 5, characterized in that, One end of the movable sleeve (7-3) is movably fitted inside the fixed sleeve (7-1). The output end of the third cylinder (7-2) is provided with a connecting block (7-4). The connecting block (7-4) is inserted into the inner end face of the movable sleeve (7-3). The outer end face of the movable sleeve (7-3) is provided with a connecting hole (7-5).

7. The passive unwinding device of a pre-coated film slitting machine according to claim 6, characterized in that, A stud (7-6) is inserted into the connecting hole (7-5). One end of the stud (7-6) is screwed into the connecting block (7-4) by a thread. One end of the movable sleeve (7-3) is fixedly connected to a sleeve frame (7-7). A rotating disk (7-8) is rotatably connected to the surface of the sleeve frame (7-7).

8. The passive unwinding device of a pre-coated film slitting machine according to claim 7, characterized in that, Both the sleeve (7-7) and the rotating disk (7-8) are circular ring structures.

9. The passive unwinding device of a pre-coated film slitting machine according to claim 3, characterized in that, The base plate (6-9) has an arc-shaped transition structure, and the surface curvature of the base plate (6-9) is the same as the surface curvature of the first rotating roller (3).

10. The passive unwinding device of a pre-coated film slitting machine according to claim 1, characterized in that, Baffles (8) are provided at both ends of the surface of the first rotating roller (3).

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