Positioning structure for printing of high-transparency wear-resistant PET decorative film

Abstract

The application provides a positioning structure for printing of high-transparency wear-resistant PET decorative film, which comprises a winding machine and a positioning shaft located at the front end of the winding machine, a film clamping rod movably arranged at the outer end of the positioning shaft, screw cylinders equally arranged at the two ends of the film clamping rod, two groups of positioning rings slidably arranged at the outer end of the film clamping rod, a penetrating hole and a linkage block penetrating through the inner end of each group of the positioning rings, a positioning screw connected to the inner end of the penetrating hole, a positioning assembly connected to the outer end of the positioning ring, a positioning rod connected between the positioning assembly and the positioning ring, and the positioning assembly comprising a linkage rod connected to the outer end of the positioning rod, a sliding outer cylinder used for expansion after winding of the decorative film, and a linkage outer rod. The application solves the problem of the design of the film positioning structure, the precise positioning cannot be performed during the use of the film positioning structure, the winding of the film has limitations after positioning, and the smoothing operation cannot be performed during the winding of the film.

Description

Technical Field

[0001] This utility model relates to the field of positioning structure technology for films, and more specifically, to a positioning structure for printing high-transparency and wear-resistant PET decorative films. Background Technology

[0002] The roll positioning structure of decorative film mainly involves the auxiliary positioning structure in the roll positioning clamping device and the pressing device. The roll positioning clamping device slides on the rewinding frame through the limiting bushing and adjusts the width to adapt to the positioning requirements of different sized rolls.

[0003] A search revealed a moisture-proof PET film assembly with authorization announcement number CN219602946U. This utility model includes a winding assembly and a film body wound on the winding assembly. The winding assembly includes a roll, with multiple grooves formed on the inner circumference of both ends of the roll. Insert tubes are inserted into both ends of the roll, and sliders that cooperate with the grooves are integrally formed on the outer circumference of each insert tube. Positioning rings are fixedly connected to the circumference of each insert tube, and multiple fixing holes are formed on one side of each positioning ring. This utility model utilizes the fixing holes on the positioning rings to facilitate the interconnection of multiple winding assemblies using pull ropes, avoiding damage to the film body and improving the safety of film transportation. At the same time, rubber stoppers can be used to seal both ends of the roll to prevent moisture from entering the roll. A dehumidifying bag inside the roll can absorb moisture from the roll, further improving the dryness of the roll and preventing roll deformation. However, during the positioning process, only the center position of the roll is positioned, not the entire roll.

[0004] In the existing technology, the positioning structure for film cannot achieve precise positioning, and after positioning, it has limitations in film winding and cannot perform a smoothing operation on the film during the winding process. Therefore, we have made improvements and proposed a positioning structure for printing high-transparency and wear-resistant PET decorative film. Utility Model Content

[0005] The purpose of this utility model is to address the problems of current membrane positioning structure designs, which cannot achieve precise positioning during use, have limitations in membrane winding after positioning, and cannot perform smoothing operations on the membrane during winding.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0007] A positioning structure for printing high-transparency and wear-resistant PET decorative film is provided to improve the above-mentioned problems.

[0008] The application is as follows:

[0009] A positioning structure for printing high-transparency and wear-resistant PET decorative film includes a winding machine and a positioning shaft located at the front end of the winding machine. A film clamping rod is movably attached to the outer end of the positioning shaft. Threaded cylinders are arranged at equal intervals at both ends of the film clamping rod. Two sets of positioning rings slide at the outer end of the film clamping rod. A through hole and a linkage block pass through the inner end of each set of positioning rings. A positioning screw is connected to the inner end of the through hole. A positioning component is connected to the outer end of the positioning ring. A positioning rod is connected between the positioning component and the positioning ring. The positioning component includes a linkage rod connected to the outer end of the positioning rod, a sliding outer cylinder for expansion after the decorative film is wound up, and a linkage outer rod. A sliding rod, a sliding cylinder, and a linkage spring are provided between the sliding outer cylinder and the linkage rod.

[0010] As a preferred technical solution of this application, the inner side of the clamping rod is provided with a trapezoidal groove, and the trapezoidal groove is used for the clamping rod to clamp one end of the decorative film for winding. The clamping rod and the positioning ring are movably connected by a threaded cylinder and a positioning screw.

[0011] As a preferred technical solution of this application, the through hole passes through the outer end of the positioning ring, the linkage block is embedded in the through hole, and one end of the linkage block is in contact with the clamping rod, and the positioning screw passes through both ends of the linkage block.

[0012] As a preferred technical solution of this application, the positioning component and the positioning ring are fixedly connected by a positioning rod, the positioning rod and the linkage rod are vertically distributed, and the positioning rod and the linkage rod are fixedly connected.

[0013] As a preferred technical solution of this application, the two ends of the linkage rod are respectively fixed to the slide rod. The slide rod is used to slide along the inner limit of the slide cylinder. The slide cylinder is fixed to one end of the sliding outer cylinder. The center of the sliding outer cylinder is a through cylinder, which wraps around the outer end of the linkage rod.

[0014] As a preferred technical solution of this application, both the linkage outer rod and the sliding outer cylinder are provided with three sets. The three sets of linkage outer rods are rolled and attached to the outer end of the wound decorative film roll, and the sliding outer cylinder slides along the linkage outer rods. The three sets of linkage outer rods move synchronously.

[0015] As a preferred technical solution of this application, a linkage ring and a groove are provided between the positioning ring and the positioning rod. The linkage ring and the groove are provided so that the position of the positioning rod remains unchanged when the positioning shaft rotates. A limiting rod is provided at the outer end of the positioning ring, and a limiting groove is provided at the outer end of the limiting rod. The limiting groove is embedded in the winding machine.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] In the scheme of this application:

[0018] 1. Through the adaptive expansion and contraction mechanism of three sets of linked outer rods, the decorative film is kept in a concentric state during the winding process, avoiding deviation or wrinkles caused by uneven tension, thus improving printing accuracy and finished product quality.

[0019] 2. The dual limiting structure of limiting rod, limiting groove and linkage ring, and ring groove is adopted to ensure that the positioning component moves only along the axial direction when the positioning shaft rotates, and will not rotate with the shaft, thereby avoiding film material distortion or positioning failure and improving stability during high-speed winding.

[0020] 3. Through the dynamic adjustment mechanism of the slide bar, slide cylinder, and linkage spring, the linkage outer rod can automatically adjust its position according to the change of the decorative film roll diameter, ensuring that the film material is always in the best clamping state, avoiding loosening or excessive tension, and improving winding efficiency. Attached Figure Description

[0021] Figure 1 A schematic diagram of the overall structure of a positioning structure for printing high-transparency and wear-resistant PET decorative film provided in this application;

[0022] Figure 2 This application provides a winding machine and a decorative film separation structure diagram for a positioning structure used in printing high-transparency and wear-resistant PET decorative film;

[0023] Figure 3 This application provides an enlarged side section schematic diagram of a positioning ring for a positioning structure used in printing high-transparency and wear-resistant PET decorative film.

[0024] Figure 4 A schematic diagram of the slide bar side section of a positioning structure for printing high-transparency and wear-resistant PET decorative film provided in this application;

[0025] Figure 5 A schematic diagram of the positioning axis cross-section of a positioning structure for printing high-transparency and wear-resistant PET decorative film provided in this application;

[0026] Figure 6 This application provides a positioning structure for printing high-transparency and wear-resistant PET decorative films. Figure 5 A magnified structural diagram of B in the diagram;

[0027] Figure 7 This application provides a positioning structure for printing high-transparency and wear-resistant PET decorative films. Figure 4 A magnified structural diagram of A in the diagram.

[0028] The image shows:

[0029] 1. Wrapping machine; 2. Positioning shaft; 3. Clamping rod; 4. Threaded cylinder; 5. Positioning screw; 6. Positioning ring; 7. Through hole; 8. Linkage block; 9. Positioning rod; 10. Linkage rod; 11. Slide rod; 12. Slide cylinder; 13. Linkage spring; 14. Linkage outer rod; 15. Sliding outer cylinder. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0031] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely illustrates some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model. It should be noted that, unless otherwise specified, the embodiments, features, and technical solutions in the embodiments of this utility model can be combined with each other.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] like Figure 1-7 As shown, this embodiment proposes a positioning structure for printing high-transparency and wear-resistant PET decorative film, including a winding machine 1 and a positioning shaft 2 located at the front end of the winding machine 1. A film clamping rod 3 is movably attached to the outer end of the positioning shaft 2. Threaded cylinders 4 are arranged at equal intervals at both ends of the film clamping rod 3. Two sets of positioning rings 6 slide on the outer end of the film clamping rod 3. A through hole 7 and a linkage block 8 pass through the inner end of each set of positioning rings 6. A positioning screw 5 is connected to the inner end of the through hole 7. A positioning component is connected to the outer end of the positioning ring 6. A positioning rod 9 is connected between the positioning component and the positioning ring 6. The positioning component includes a linkage rod 10 connected to the outer end of the positioning rod 9, a sliding outer cylinder 15 for expansion after the decorative film is wound up, and a linkage outer rod 14. A sliding rod 11, a sliding cylinder 12, and a linkage spring 13 are provided between the sliding outer cylinder 15 and the linkage rod 10.

[0034] The inner side of the clamping rod 3 is provided with a trapezoidal groove, which is used to clamp one end of the decorative film for winding. The clamping rod 3 and the positioning ring 6 are movably connected by the threaded cylinder 4 and the positioning screw 5.

[0035] The through hole 7 passes through the outer end of the positioning ring 6, the linkage block 8 is embedded in the through hole 7, and one end of the linkage block 8 is in contact with the clamping rod 3. The positioning screw 5 passes through both ends of the linkage block 8.

[0036] The positioning component and the positioning ring 6 are fixedly connected by the positioning rod 9. The positioning rod 9 and the linkage rod 10 are vertically distributed and fixedly connected.

[0037] The two ends of the linkage rod 10 are fixed to the slide rod 11 respectively. The slide rod 11 is used to slide along the inner limit of the slide cylinder 12. The slide cylinder 12 is fixed to one end of the sliding outer cylinder 15. The center of the sliding outer cylinder 15 is a through cylinder, which wraps around the outer end of the linkage outer rod 14.

[0038] Both the linkage outer rod 14 and the sliding outer cylinder 15 are provided with three sets. The three sets of linkage outer rods 14 are rolled and attached to the outer end of the wound decorative film roll. The sliding outer cylinder 15 slides along the linkage outer rod 14, and the three sets of linkage outer rods 14 move synchronously.

[0039] A linkage ring and a ring groove are provided between the positioning ring 6 and the positioning rod 9. The outer end of the positioning ring 6 is provided with a limiting rod, and the outer end of the limiting rod is provided with a limiting groove. The limiting groove is embedded in the winding machine 1.

[0040] One embodiment is used for the initial installation and rewinding operation of a positioning structure for printing high-transparency, abrasion-resistant PET decorative films:

[0041] The starting end of the high-transparency, wear-resistant PET decorative film to be printed is embedded into the trapezoidal groove of the clamping rod 3. The clamping force at both ends of the clamping rod 3 fixes the starting end of the film material, ensuring that the film material does not slip during the winding process. The two sets of positioning rings 6 are slid along the outer end of the clamping rod 3 to the predetermined positions at both ends of the decorative film. The positioning rings 6 are locked onto the clamping rod 3 by the cooperation of the threaded cylinder 4 and the positioning screw 5, so that the positioning rings 6 and the clamping rod 3 form a rigid connection, ensuring the stability of the positioning rings 6 during the winding process. The winding machine 1 is started, and the motor drives the positioning shaft 2 to rotate, which drives the clamping rod 3 and the decorative film fixed on it to rotate synchronously. During the winding process, the decorative film gradually expands outward, pushing the three sets of linkage outer rods 14 to move outward. The linkage outer rods 14 slide along the slide cylinder 12 through the slide rod 11, compressing the linkage spring 13 to achieve adaptive expansion. Positioning rod 9 serves as the central positioning reference, ensuring the synchronous movement of the linkage outer rod 14 and preventing film material winding deviation. During the winding process, the limiting rod cooperates with the limiting groove in the winding machine 1 to limit the radial displacement of the positioning ring 6 and the positioning assembly. The linkage ring and the ring groove structure further constrain the relative position of the positioning assembly and the positioning shaft 2, ensuring that the positioning assembly only undergoes axial displacement with the change of the decorative film roll diameter, and does not rotate with the positioning shaft 2, thereby maintaining the concentricity of the film material winding.

[0042] Another embodiment is used for the reverse laying operation of high-transparency and abrasion-resistant PET decorative film:

[0043] When the decorative film needs to be laid outwards in reverse, stop the winding machine 1 and disengage the motor drive. At this time, the tension of the decorative film is released, and the linkage outer rod 14 retracts inwards under the rebound force of the linkage spring 13. The slide rod 11 slides inwards and resets along the slide cylinder 12. The synchronous retraction of the linkage outer rod 14 is transmitted to the positioning ring 6 through the positioning rod 9 to ensure that the retraction action of the three sets of linkage outer rods 14 is consistent, so as to avoid wrinkles or displacement of the film material due to uneven local stress and maintain the stability of the reverse laying process.

[0044] Another embodiment is used for anti-rotation limiting design of positioning components:

[0045] The positioning ring 6 and the positioning shaft 2 are radially limited by a limiting rod and a limiting groove, while the linkage ring is embedded in the ring groove to form an axial sliding constraint. This design allows the positioning component to move only along the axial direction of the positioning shaft 2 when the positioning shaft 2 rotates (adjusting its position according to the change in the diameter of the decorative film roll), and will not rotate synchronously with the positioning shaft 2, thereby avoiding film material distortion or positioning failure caused by relative rotation between the positioning component and the decorative film.

[0046] When this application is used:

[0047] Before using the positioning structure for printing high-transparency and wear-resistant PET decorative film, first clamp the starting end of the high-transparency and wear-resistant PET decorative film to be printed into the clamping rod 3, and then move the corresponding positioning ring 6 to both ends of the high-transparency and wear-resistant PET decorative film. Use the positioning screw 5 to fix the positioning ring 6 in the corresponding threaded cylinder 4 to ensure the stability of the positioning ring 6. During the process of ensuring the stability of the positioning ring 6, the winding machine 1 starts to operate. The motor inside the winding machine 1 drives the positioning shaft 2 to rotate. The rotation of the positioning shaft 2 pushes the high-transparency and wear-resistant PET decorative film to be collected. During the collection process, the linkage outer rod 14 is driven by the high-transparency and wear-resistant PET decorative film to expand outward. During the movement, the two sliding cylinders 12 connected to each sliding outer cylinder 15 slide against each other with the corresponding sliding rod 11. The internal linkage springs 13 all generate compression and contraction. During this process, the sliding rod 11 is driven to move along the inside of the sliding cylinder 12. The positioning rod 9 connected in the center of the sliding rod 11 serves as the center positioning until the high-transparency and wear-resistant PET decorative film is wound up.

[0048] When the high-transparency and wear-resistant PET decorative film needs to be laid outwards in the reverse direction, the linkage outer rod 14 retracts inwards, and the slide rod 11 moves inwards along the corresponding slide cylinder 12, thereby ensuring the overall stability.

[0049] In addition, as the positioning ring 6 moves outward along the positioning shaft 2, it is limited by the limiting rod and the limiting groove, which ensures that the positioning component and the positioning shaft 2 do not move relative to each other during the rotation of the positioning shaft 2. When the positioning shaft 2 rotates, the positioning component is limited to the outer end of the positioning shaft 2 by the setting of the linkage ring and the ring groove.

[0050] It should be understood that in this application, all rotating, sliding, meshing, belt-driven and other moving parts are well lubricated and not prone to slippage or wear, and each part is provided with a corresponding protective shell. However, in the accompanying drawings of this application, the connection state of each moving part is not shown. It should also be understood that all parts in this application are made of metal or plastic materials with suitable strength in the relevant field to ensure that their structural rigidity meets the actual requirements.

[0051] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.

Claims

1. A positioning structure for printing high-transparency and wear-resistant PET decorative film, comprising a winding machine (1) and a positioning shaft (2) located at the front end of the winding machine (1), characterized in that, The outer end of the positioning shaft (2) is movably connected to a clamping rod (3). Threaded cylinders (4) are arranged at equal intervals at both ends of the clamping rod (3). Two sets of positioning rings (6) slide at the outer end of the clamping rod (3). Each set of positioning rings (6) has a through hole (7) and a linkage block (8) passing through its inner end. A positioning screw (5) is connected to the inner end of the through hole (7). A positioning component is connected to the outer end of the positioning ring (6). A positioning rod (9) is connected between the positioning component and the positioning ring (6). The positioning component includes a linkage rod (10) connected to the outer end of the positioning rod (9), a sliding outer cylinder (15) for expansion after the decorative film is rolled up, and a linkage outer rod (14). A slide rod (11), a slide cylinder (12), and a linkage spring (13) are provided between the sliding outer cylinder (15) and the linkage rod (10).

2. The positioning structure for printing high-transparency and wear-resistant PET decorative film according to claim 1, characterized in that, The inner side of the clamping rod (3) is provided with a trapezoidal groove, and the trapezoidal groove is used for the clamping rod (3) to clamp one end of the decorative film for winding. The clamping rod (3) and the positioning ring (6) are movably connected by a threaded cylinder (4) and a positioning screw (5).

3. The positioning structure for printing high-transparency and wear-resistant PET decorative film according to claim 2, characterized in that, The through hole (7) passes through the outer end of the positioning ring (6), the linkage block (8) is embedded in the through hole (7), and one end of the linkage block (8) is in contact with the clamping rod (3). The positioning screw (5) passes through both ends of the linkage block (8).

4. The positioning structure for printing high-transparency and wear-resistant PET decorative film according to claim 3, characterized in that, The positioning component and the positioning ring (6) are fixedly connected by a positioning rod (9). The positioning rod (9) and the linkage rod (10) are vertically distributed and fixedly connected.

5. The positioning structure for printing high-transparency and wear-resistant PET decorative film according to claim 4, characterized in that, The two ends of the linkage rod (10) are respectively fixed to the slide rod (11). The slide rod (11) is used to slide along the inner limit of the slide cylinder (12). The slide cylinder (12) is fixed to one end of the sliding outer cylinder (15). The center of the sliding outer cylinder (15) is a through cylinder. The through cylinder is wrapped around the outer end of the linkage outer rod (14).

6. The positioning structure for printing high-transparency and wear-resistant PET decorative film according to claim 5, characterized in that, The linkage outer rod (14) and the sliding outer cylinder (15) are each provided in three sets. The three sets of linkage outer rods (14) are rolled and attached to the outer end of the wound decorative film roll. The sliding outer cylinder (15) slides along the linkage outer rod (14). The three sets of linkage outer rods (14) move synchronously.

7. The positioning structure for printing high-transparency and wear-resistant PET decorative film according to claim 6, characterized in that, A linkage ring and a ring groove are provided between the positioning ring (6) and the positioning rod (9). A limiting rod is provided at the outer end of the positioning ring (6), and a limiting groove is provided at the outer end of the limiting rod. The limiting groove is embedded in the winding machine (1).

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