Protective film conveying and tensioning device

Abstract

The utility model discloses a protective film conveying and tensioning device which comprises a tensioning frame, and spring tensioning wheel mechanisms are assembled and connected to the two sides of the tensioning frame respectively. The mechanism comprises a fixing rod shaft installed on a tensioning frame, a plurality of tensioning wheel assemblies are arranged on the fixing rod shaft in a hinged mode, and each tensioning wheel assembly comprises a wheel frame hinged to the fixing rod shaft; the outer end of the wheel carrier is rotationally connected with a tensioning wheel; the tensioning wheel assembly further comprises a tensioning spring; one end of the tension spring is fixedly connected to the wheel carrier; the spring tensioning wheel mechanism further comprises a fixing frame fixedly connected to the fixing rod shaft, a plurality of height-adjustable lifting rods are installed on the fixing frame, and the other end of the tensioning spring is fixedly connected to the lifting rods. By means of the device, in the conveying process, under the cooperation of the tensioning wheel and the tensioning spring, the tensioning wheel shakes up and down along with the uneven thin film material, in this way, the thin film material is tensioned in real time, and the thin film material is protected.

Description

Technical Field

[0001] This utility model belongs to the field of protective film processing technology, and in particular relates to a protective film transmission and tensioning device. Background Technology

[0002] A protective film is a film material used to protect the screens of electronic devices, such as mobile phone screens and television screens. Protective films are often made of composite materials, such as PVC composite film. Furthermore, the protective film itself is often a composite layer structure; during the production process, to improve the performance of the film material, multiple layers of film materials with different properties are often laminated together under heat to form the protective film.

[0003] Therefore, the production of protective films involves a large amount of membrane material processing, and membrane material transfer is a crucial step in the entire production process. Specifically, membrane materials are transferred to processing stations, such as the adhesive coating station, using transfer equipment. During membrane material transfer, due to the inherent properties of the membrane material, such as its flexibility, the membrane material is prone to insufficient tension, resulting in excessively loose material during transfer. This looseness not only affects the stability of the transfer but also makes the membrane material prone to misalignment during transport.

[0004] Therefore, existing technologies use tensioning rods and rollers to tighten the film material. However, these methods lack a fixed tensioning mechanism and cannot adjust the tension according to the film material's slack. In the transport of flexible film materials, the film material undulates vertically. If the tension is too high, further tensioning can easily lead to breakage or deformation. Conversely, if the film material is too slack, the tensioning rods and rollers cannot adequately contact the film, resulting in tension failure. While adjusting the height of the tensioning rods and rollers can achieve tension, the tension changes continuously with the high-speed transport of the film material. Therefore, traditional adjustment methods cannot provide real-time tension for high-speed film transport. Utility Model Content

[0005] Based on the above background, the purpose of this utility model is to provide a protective film transmission tensioning device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A protective film transmission tensioning device includes a tensioning frame, on both sides of which a spring tensioning wheel mechanism is respectively assembled and connected;

[0008] The spring tensioning wheel mechanism includes a fixed rod shaft mounted on a tensioning frame, and a plurality of tensioning wheel assemblies are hinged on the fixed rod shaft. Each tensioning wheel assembly includes a wheel frame hinged on the fixed rod shaft.

[0009] A tension wheel is rotatably connected to the outer end of the wheel frame, and the tension wheel assembly further includes a tension spring; one end of the tension spring is fixedly connected to the wheel frame.

[0010] The spring tensioning wheel mechanism also includes a fixed frame fixedly connected to the fixed rod shaft, and a number of height-adjustable lifting rods are installed on the fixed frame. The other end of the tensioning spring is fixedly connected to the lifting rods.

[0011] Preferably, the tensioning frame includes frame plates spaced apart at the front and rear, and the fixing rod shaft is fixedly connected between the frame plates;

[0012] The frame plate has several mounting holes.

[0013] Preferably, the front and rear ends of the fixing rod shaft are respectively threaded with fastening screws that are fastened to the frame plate;

[0014] The fastening screw has a hexagonal protrusion integrally formed on it.

[0015] Preferably, the inner end of the wheel frame is fixedly connected to a connecting short shaft, the connecting short shaft is fixedly connected to a hinge seat, and the hinge seat is hinged to the fixed rod shaft.

[0016] Preferably, the tensioning wheel assembly is distributed on the fixed rod shaft in a staggered left-right distribution pattern.

[0017] Preferably, the lifting rod is slidably connected to the fixed frame;

[0018] The lifting rod is slidably threaded and connected to a lower nut that is supported at the bottom of the fixed frame;

[0019] The upper end of the lifting rod is threaded with a locking nut for locking the top position of the fixing frame.

[0020] Preferably, a film cleaning and leveling mechanism is fixedly connected between the frame plates.

[0021] Preferably, the film material cleaning and leveling mechanism includes rod seats arranged at intervals between the upper and lower parts, and a sponge sleeve is sleeved on the rod seats;

[0022] After the membrane material rubs through the sponge sleeves, it is cleaned and leveled by the sponge sleeves.

[0023] Preferably, the longitudinal cross-sectional shape of the fixing frame is U-shaped, and the front and rear ends of the fixing frame are fixedly installed on the fixing rod shaft.

[0024] This utility model has the following beneficial effects:

[0025] 1. During operation, under normal circumstances, the tensioning wheel contacts the membrane being transported, using its own gravity to press and tension the membrane material. When the membrane material becomes too loose, the tensioning wheel-wheel frame structure overcomes the spring's tension and flips down to continue pressing and tensioning the membrane material under its own gravity.

[0026] When the tension of the film material is too high, the tensioning wheel is raised upwards under the action of the film material's resistance. At this time, under the action of the spring, the tensioning wheel can be raised with a smaller resistance of the film material, reducing the contact pressure of the tensioning wheel and avoiding excessive contact pressure from the tensioning wheel, which could cause deformation or breakage of the film material.

[0027] During transmission, the uneven film material comes into contact with the tensioning wheel. With the help of the spring on the tensioning wheel, the tensioning wheel moves up and down with the uneven film material. In this way, the film material is tensioned in real time, and the film material is protected from excessive tension, which could cause deformation or breakage.

[0028] 2. The film material cleaning and leveling mechanism includes rods spaced at intervals, with a sponge sleeve fitted on each rod. After the film material rubs through the sponge sleeves, it is cleaned and leveled by the sponge sleeves. Attached Figure Description

[0029] 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.

[0030] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model;

[0031] Figure 2 This is a schematic diagram of the spring tensioning wheel mechanism in an embodiment of the present invention;

[0032] Figure 3 This is an embodiment of the present utility model. Figure 1 A structural diagram from another perspective;

[0033] Figure 4 This is an embodiment of the present utility model. Figure 1 The top view in the image.

[0034] 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

[0035] 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 protection scope of the present utility model.

[0036] 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.

[0037] Furthermore, in this utility model, descriptions involving "first," "second," etc., 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 that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0038] Example 1

[0039] like Figure 1-4 As shown, a protective film transmission tensioning device includes a tensioning frame 1 (the tensioning frame 1 includes frame plates arranged at intervals in front and behind, and each frame plate is provided with a plurality of mounting holes, and the frame plates are installed on the transmission frame in a conventional manner, such as by bolts).

[0040] In order to achieve real-time tensioning of the high-speed transported membrane material and to adjust the tension according to the tension of the membrane material itself, spring tensioning wheel mechanisms 4 are respectively installed and connected to both sides of the tensioning frame 1.

[0041] The spring tensioning wheel mechanism 4 includes a fixed rod shaft 45 mounted on the tensioning frame 1 (the fixed rod shaft 45 is fixedly connected between the frame plates; specifically, the front and rear ends of the fixed rod shaft 45 are respectively threaded with fastening screws 451 that are fastened to the frame plates; the fastening screws 451 have hexagonal protrusions integrally formed on them, and the fixed rod shaft 45 is installed on the frame plate by turning the fastening screws).

[0042] Meanwhile, several tensioning wheel assemblies are hinged on the fixed rod shaft 45 (the tensioning wheel assemblies are distributed in a staggered left-right manner on the fixed rod shaft 45). Each tensioning wheel assembly includes a wheel frame 42 hinged on the fixed rod shaft 45. The hinge method is as follows: a connecting short shaft is fixedly connected to the inner end of the wheel frame 42, and a hinge seat 44 is fixedly connected to the connecting short shaft. The hinge seat 44 is hinged on the fixed rod shaft 45.

[0043] Specifically, a tensioning wheel 43 is rotatably connected to the outer end of the wheel frame 42, and the tensioning wheel 43 assembly also includes a tensioning spring 46; one end of the tensioning spring 46 is fixedly connected to the wheel frame 42; the spring tensioning wheel mechanism 4 also includes a fixed frame 3 (the longitudinal cross-sectional shape of the fixed frame 3 is U-shaped, and the front and rear ends of the fixed frame 3 are fixedly installed on the fixed rod shaft 45) fixedly connected to the fixed rod shaft 45, and a number of height-adjustable lifting rods 41 are installed on the fixed frame 3, and the other end of the tensioning spring 46 is fixedly connected to the lifting rods 41.

[0044] Specifically, the lifting rod 41 is slidably connected to the fixed frame 3; a lower nut 411, supporting the bottom of the fixed frame 3, is threadedly connected to the lifting rod 41; a locking nut A for locking the top of the fixed frame 3 is threadedly connected to the upper end of the lifting rod 41. The function of the lifting rod 41 is also to adjust the tension. Specifically, when the lifting rod 41 is raised, the tension wheel 43 flips upward, reducing the contact pressure with the film material. Conversely, when the lifting rod 41 is lowered, the tension is further increased.

[0045] The specific method is as follows: loosen the locking nut A, lower nut 411, and then adjust the height.

[0046] During operation, under normal circumstances, the tensioning wheel 43 contacts the membrane being transported, using its own gravity to press and tension the membrane material. When the membrane material becomes too loose, the tensioning wheel 43-wheel frame 42 structure overcomes the spring tension and flips down to continue pressing and tensioning the membrane material under its own gravity.

[0047] When the tension of the film material is too high, the tensioning wheel 43 is raised upwards under the action of the film material's resistance. At this time, under the action of the spring, the tensioning wheel 43 can be raised with a smaller resistance, reducing the contact pressure of the tensioning wheel 43 and preventing the tensioning wheel 43 from being too tightly pressed, which could cause deformation or breakage of the film material.

[0048] During transmission, the uneven film material comes into contact with the tensioning wheel 43. With the help of the spring on the tensioning wheel 43, the tensioning wheel 43 moves up and down with the uneven film material. In this way, the film material is tensioned in real time, and the film material is protected from excessive tension, which may cause deformation or breakage.

[0049] Example 2

[0050] like Figure 1-4 As shown, this embodiment, based on the structure of Embodiment 1, includes a film material cleaning and leveling mechanism fixedly connected between the aforementioned frame plates. This mechanism levels the transported film material while simultaneously removing dust, thus achieving film processing.

[0051] Specifically, the film material cleaning and leveling mechanism includes rod seats 21 arranged at intervals between the upper and lower parts, and a sponge sleeve 2 is sleeved on the rod seat 21; after the film material rubs through the sponge sleeve 2, the film material is cleaned by the sponge sleeve 2 and leveled at the same time.

[0052] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A protective film transmission tensioning device, characterized in that, It includes a tensioning frame, and spring tensioning wheel mechanisms are respectively assembled and connected to both sides of the tensioning frame; The spring tensioning wheel mechanism includes a fixed rod shaft mounted on a tensioning frame, and a plurality of tensioning wheel assemblies are hinged on the fixed rod shaft. Each tensioning wheel assembly includes a wheel frame hinged on the fixed rod shaft. A tension wheel is rotatably connected to the outer end of the wheel frame, and the tension wheel assembly further includes a tension spring; one end of the tension spring is fixedly connected to the wheel frame. The spring tensioning wheel mechanism also includes a fixed frame fixedly connected to the fixed rod shaft, and a number of height-adjustable lifting rods are installed on the fixed frame. The other end of the tensioning spring is fixedly connected to the lifting rods.

2. The protective film transmission tensioning device according to claim 1, characterized in that, The tensioning frame includes frame plates spaced apart at the front and rear, and the fixing rod shaft is fixedly connected between the frame plates; The frame plate has several mounting holes.

3. The protective film transmission tensioning device according to claim 2, characterized in that, The front and rear ends of the fixed rod shaft are respectively threaded with fastening screws that are fastened to the frame plate; The fastening screw has a hexagonal protrusion integrally formed on it.

4. The protective film transmission tensioning device according to claim 1, characterized in that, The inner end of the wheel frame is fixedly connected to a connecting short shaft, and the connecting short shaft is fixedly connected to a hinge seat, which is hinged to the fixed rod shaft.

5. The protective film transmission tensioning device according to claim 1, characterized in that, The tensioning wheel assembly is distributed on the fixed rod shaft in a staggered left-right pattern.

6. The protective film transmission tensioning device according to claim 1, characterized in that, The lifting rod is slidably connected to the fixed frame; The lifting rod is slidably threaded and connected to a lower nut that is supported at the bottom of the fixed frame; The upper end of the lifting rod is threaded with a locking nut for locking the top position of the fixing frame.

7. The protective film transmission tensioning device according to claim 2, characterized in that, A film cleaning and leveling mechanism is fixedly connected between the frame plates.

8. The protective film transmission tensioning device according to claim 7, characterized in that, The film material cleaning and leveling mechanism includes rod seats arranged at intervals on the upper and lower sides, and a sponge sleeve is sleeved on the rod seats; After the membrane material rubs through the sponge sleeves, it is cleaned and leveled by the sponge sleeves.

9. The protective film transmission tensioning device according to claim 7, characterized in that, The longitudinal cross-sectional shape of the fixing frame is U-shaped, and the front and rear ends of the fixing frame are fixedly installed on the fixing rod shaft.

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