A film stretch tension pre-assembly

Abstract

The present application relates to the technical fields of film tension pre-preparation, and discloses a film stretching tension pre-preparation device, wherein the film drawing module, the bearing module and the film pressing module are reasonably arranged through the frame, the film drawing module first clamps and pre-stretches the film edges to provide a film basis with a certain tension for subsequent shaping operation, the bearing surface of the bearing module provides a stable bearing plane for further stretching and shaping of the film, when the film pressing die is lowered to press the film onto the bonding surface of the bonding structure, the extrusion of the film and the bonding structure by the bearing module and the film pressing module effectively bonds the film and the bonding structure, realizes the pre-preparation and shaping of the film pre-tension, and the film stretching tension pre-preparation device can realize the pre-preparation of the film tension, the size of the tension is adjustable and monitorable, and the film stretching size is adjustable and monitorable.

Description

Technical Field

[0001] This invention relates to the field of thin film tension preforming technology, and discloses a thin film tension preforming device. Background Technology

[0002] Pre-tensioned films have applications in numerous industries. Currently, most film-related equipment on the market is used for film product production and packaging, employing electromechanical and hydraulic automation to control film forming, batch production transfer, and production activities such as rolling, winding, and coiling. Most film manufacturers' equipment is primarily used for large-scale and general-purpose film production, with deliveries typically in rolls or large-area sheets. For pre-tensioned film preparation equipment, only some manual stretching and auxiliary stretching devices exist, resulting in relatively limited functionality and inability to guarantee dimensional accuracy and stretching precision. Summary of the Invention

[0003] The purpose of this invention is to provide a film tension preforming device that can realize the preforming and shaping of film pretension.

[0004] To achieve the above-mentioned technical effects, the technical solution adopted by the present invention is as follows: A thin film tensile tension preforming device, comprising: The frame has a film stretching module on its worktable. The film stretching module is used to clamp the edge of the film and stretch the film in a preset direction. A carrier module is connected to the frame and located below the film. The carrier module has a carrier surface for placing the adhesive structure of the film. A film pressing module is connected to the frame and located above the film. The film pressing module is equipped with a lifting and lowering film pressing mold. The film pressing mold is equipped with a film pressing curved surface that fits against the bonding surface of the adhesive structure. The film pressing surface of the film pressing mold is used to press the film onto the bonding surface of the adhesive structure so that the film is bonded to the adhesive structure.

[0005] Furthermore, the film stretching module includes a film clamping mechanism and at least three film stretching mechanisms. The film clamping mechanism and the film stretching mechanism are both fixed on the worktable and distributed around the film. The film stretching mechanism is used to clamp the edge of the film and stretch the film in a preset direction.

[0006] Furthermore, the film clamping mechanism is provided with a mounting clip, which includes a U-shaped seat, a fixed clamping plate, a movable clamping plate, and a clamping mold driving component. The U-shaped seat is fixed on the worktable, the fixed clamping plate is fixed on one side plate of the U-shaped seat, the movable clamping plate is slidably connected to the U-shaped seat, and the clamping mold driving component is connected to the movable clamping plate to drive the movable clamping plate closer to the fixed clamping plate to clamp the film.

[0007] Furthermore, the film stretching mechanism includes the mounting clamp and the film stretching drive. The film stretching drive is fixed on the worktable and is used to drive the mounting clamp to move in order to stretch the film along a preset direction.

[0008] Furthermore, the bearing module includes a bearing mold having the bearing surface and a bearing electric cylinder supporting the bearing mold. One end of the bearing electric cylinder is hinged to the frame, and the other end is hinged to the convex surface of the bearing mold.

[0009] Furthermore, the bearing mold is provided with a limiting mechanism for positioning the adhesive structure placed on the bearing surface.

[0010] Furthermore, the molding module includes a lifting drive mechanism, a lifting frame, and a transfer frame; the lifting drive mechanism is fixed on the frame, the lifting drive mechanism is connected to the lifting frame, and the lifting frame is connected to the molding die through the transfer frame; Furthermore, the molding module also includes a mold fine-tuning drive component. The lifting frame is slidably connected to the adapter frame, and the mold fine-tuning drive component is installed between the lifting frame and the adapter frame. The mold fine-tuning drive component is used to adjust the relative position of the molding mold relative to the supporting mold by driving the adapter frame to move along a preset direction.

[0011] Compared with the prior art, the beneficial effects of this invention are: This invention rationally arranges the film stretching module, the support module, and the pressing module within a frame. The film stretching module first clamps and pre-stretches the film edges, providing a film foundation with a certain tension for subsequent shaping operations. The support module provides a stable bearing surface for further film stretching and shaping. When the pressing mold descends and presses the film onto the bonding surface of the adhesive structure, the compression action of the support module and the pressing module effectively bonds the film to the adhesive structure, achieving pre-tensioning and shaping of the film. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the thin film tensile tension prefabrication device in the embodiment; Figure 2 This is a front view of the film tensile tension prefabrication device in the embodiment; Figure 3 This is a schematic diagram of the structure of the film stretching module in the embodiment; Figure 4 This is a schematic diagram of the structure of the membrane fixing mechanism in the embodiment; Figure 5 This is a schematic diagram of the membrane stretching mechanism in the embodiment; Figure 6 This is a schematic diagram of the structure of the load-bearing module in the embodiment; Figure 7 This is a schematic diagram of the pressure film module in the embodiment; Among them, 1-frame, 11-workbench, 2-film stretching module, 21-fixed film clamping mechanism, 211-installation clamp, 2111-U-shaped seat, 2112-fixed clamping plate, 2113-movable clamping plate, 2114-clamping drive component, 22-film stretching mechanism, 221-film stretching drive component, 3-bearing module, 31-bearing mold, 311-limiting protrusion, 312-limiting block, 32-bearing electric cylinder, 4-film pressing module, 41-film pressing mold, 42-lifting drive mechanism, 43-lifting frame, 44-transfer frame, 45-mold fine-tuning drive component. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the embodiments and accompanying drawings. However, this should not be construed as limiting the scope of the above-described subject matter of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0014] Example See Figures 1 to 7 A thin film tensile tension preforming device, comprising: The frame 1 has a worktable 11 on which a film stretching module 2 is provided. The film stretching module 2 is used to clamp the edge of the film and stretch the film in a preset direction. It should be noted that when the film stretching module 2 stretches the film, the preset stretching direction can be determined according to actual needs. For example, when it is necessary to stretch the film outward from the center of the film, the film stretching module 2 is arranged around the film and stretches the film outward after clamping the edge of the film.

[0015] The carrier module 3 is connected to the frame 1 and located below the film. The carrier module 3 is provided with a carrier surface for placing the adhesive structure of the film. A film pressing module 4 is connected to the frame 1 and located above the film. The film pressing module 4 includes a lifting and lowering film pressing mold 41, which has a curved pressing surface that conforms to the bonding surface of the adhesive structure. The pressing surface of the mold 41 is used to press the film onto the bonding surface of the adhesive structure, thus bonding the film to the adhesive structure. During film tension pre-forming, the film is first pre-stretched in a two-dimensional plane by the film stretching module 2, and then further stretched in three-dimensional space by the film pressing module 4. The bonding structure is then bonded to the stretched film using the bearing module 3, completing the film shaping. Simultaneously, the bonding structure maintains the tension of the stretched film, preventing shrinkage. The bonding structure can be a honeycomb structure or a sheet material capable of withstanding film tension shrinkage.

[0016] It should be noted that the worktable 11 on the frame 1 is provided with a clearance hole through which the film pressing mold 41 can pass, and the film stretching module 2 is located on the side of the clearance hole.

[0017] In this embodiment, the film stretching module 2, the bearing module 3, and the pressing module 4 are rationally arranged in the frame 1. The film stretching module 2 first clamps and pre-stretches the film edge, providing a film base with a certain tension for subsequent shaping operations. The bearing surface of the bearing module 3 provides a stable bearing plane for further stretching and shaping of the film. When the pressing mold 41 descends and presses the film onto the bonding surface of the adhesive structure, the compression action of the bearing module 3 and the pressing module 4 effectively bonds the film and the adhesive structure, realizing the pre-tensioning and shaping of the film. Moreover, this invention can be applied to the pre-tensioning of large-size films, such as the pre-tensioning of films in the 1.2m × 1.5m range.

[0018] When it is necessary to stretch the film outward from the center, such as Figures 3 to 5 The film stretching module 2 includes a fixed clamping mechanism 21 and at least three film stretching mechanisms 22. In this embodiment, taking a square film as an example, a film stretching module 2 with one fixed clamping mechanism 21 and three film stretching mechanisms 22 is used. The fixed clamping mechanism 21 and the film stretching mechanisms 22 are both fixed on the worktable 11 and distributed around the perimeter of the film, each corresponding to one side of the square film. During film stretching, the fixed clamping mechanism 21 and the film stretching mechanisms 22 clamp one side of the square film. The fixed clamping mechanism 21 positions the film, while the three film stretching mechanisms 22 stretch the film outwards, achieving pre-stretching of the film.

[0019] In this embodiment, as Figures 3 to 4The film clamping mechanism 21 is equipped with mounting clips 211. The mounting clips 211 can be one that matches the size of the film to be stretched. For example, if the film size is 180cm*180cm, the mounting clips 211 should be sized to hold a 180cm wide film. Alternatively, the mounting clips 211 can be smaller; for example, if the film size is 180cm*180cm and the length of the mounting clips 211 is 60cm, then three mounting clips 211 are needed to hold the film. In this embodiment, the film clamping mechanism 21 uses four mounting clips 211. Each mounting clip 211 includes a U-shaped base 2111, a fixed clamping plate 2112, a movable clamping plate 2113, and a clamping drive component 2114. U-shaped base 2111 is fixed on workbench 11, and fixed clamping plate 2112 is fixed on one side plate of U-shaped base 2111. A guide rod is provided inside U-shaped base 2111, and movable clamping plate 2113 is slidably connected to U-shaped base 2111 through the guide rod. Clamping drive component 2114 is a bolt, telescopic electric cylinder, or motor-driven lead screw. In this embodiment, clamping drive component 2114 is a clamping drive bolt. The clamping drive bolt is installed on the threaded hole of the side plate of U-shaped base 2111, and the end of the clamping drive bolt is rotatably connected to movable clamping plate 2113. When it is necessary to clamp the film, the clamping drive bolt is rotated to drive movable clamping plate 2113 to move along the guide rod and approach fixed clamping plate 2112 to clamp the film; when it is necessary to release the film, the clamping drive bolt is rotated in the opposite direction to drive movable clamping plate 2113 to move along the guide rod and away from fixed clamping plate 2112.

[0020] In this embodiment, as Figure 3 and Figure 5 The film stretching mechanism 22 includes mounting clamps 211 and a film stretching drive component 221. The film stretching drive component 221 is a linear module driven by a motor, with guide rails and a slider. The linear module is fixed on the worktable 11, and the mounting clamps 211 are mounted on the slider of the linear module. In this embodiment, a single film stretching mechanism 22 has four mounting clamps 211, each corresponding to one linear module. After the mounting clamps 211 clamp the edge of the film, the linear module drives the mounting clamps 211 to move, thereby pre-stretching the film. After uniform stretching of the large-size film, the film is left to stand still.

[0021] It should be noted that the present invention includes a force sensor on the mounting clamp 211 of the film stretching module 2 to monitor the pre-tension of the film stretching, thereby achieving the monitoring of the film pre-tension. Furthermore, in the film stretching mechanism 22, the present invention uses a linear module to drive the mounting clamp 211 to stretch the film, and by controlling the motor, the pre-tension of the film and the film stretching dimensions can be adjusted.

[0022] In this embodiment, as Figure 1 and Figure 6The bearing module 3 includes a bearing mold 31 with the bearing surface and a bearing electric cylinder 32 supporting the bearing mold 31. The bearing electric cylinder 32 is a commercially available telescopic electric cylinder. One end of the bearing electric cylinder 32 is hinged to the frame 1, and the piston rod of the bearing electric cylinder 32 is hinged to the convex surface of the bearing mold 31. In this embodiment, three bearing electric cylinders 32 are used to support the bearing mold 31. At the same time, the angle of the bearing mold 31 can be adjusted by adjusting the extension and retraction of the piston rod of each bearing electric cylinder 32, so that the bonding structure on the bearing surface of the bearing mold 31 can be accurately matched and bonded to the stretch film corresponding to the pressing surface of the pressing mold 41.

[0023] In this embodiment, as Figure 6 The bearing mold 31 is provided with a limiting mechanism, which includes a limiting protrusion 311 located at the edge of the bearing surface and an upper limit block 312 installed on the bearing mold 31. When the adhesive structure is placed on the bearing surface of the bearing mold 31, the limiting protrusion 311 and the limiting block 312 are used to determine the position of the adhesive structure on the bearing surface so that the adhesive structure can be accurately bonded to the stretch film.

[0024] In this embodiment, as Figure 1 and Figure 7 The film pressing module 4 includes a lifting drive mechanism 42, a lifting frame 43, and a transfer frame 44. The lifting drive mechanism 42 is a telescopic electric cylinder and fixed on the frame 1. Alternatively, a linear module or other lifting drive mechanism 42 capable of lifting can be used. The piston rod of the telescopic electric cylinder is connected to the lifting frame 43, the lifting frame 43 is connected to the transfer frame 44, and the transfer frame 44 is connected to the film pressing mold 41. The lifting frame 43 is slidably connected to the frame 1 via a guide rail slider to ensure that the lifting frame 43 maintains a preset straightness during linear lifting to ensure accurate bonding of the adhesive structure and the stretched film.

[0025] Furthermore, the molding module 4 also includes a mold fine-tuning drive component 45. The lifting frame 43 is slidably connected to the adapter frame 44 via a guide rail slider. The mold fine-tuning drive component 45 uses a motor-driven lead screw, and the lead screw nut is connected to the adapter frame 44 via a connector. When it is necessary to fine-tune the position of the supporting mold 31, the motor drives the lead screw to rotate, thereby driving the adapter frame 44 to move in a preset direction to adjust the relative position of the molding mold 41 relative to the supporting mold 31. It should be noted that the motor used in the mold fine-tuning drive component 45 is a servo motor with a braking function to ensure that the position of the adapter frame 44 does not change after adjustment.

[0026] It should be noted that the electric cylinders of the bearing module and the pressing module in this invention are equipped with triple protection: software protection, limit switch contact protection, and mechanical protection. The first protection is that the maximum speed limit can be set in the software program. The second protection is that limit switches and sensing blocks can be set on the module. When the limit switch senses the sensing block, the controller automatically cuts off the power supply to the corresponding module. The third protection is that stops can be set at both ends of the module to limit its displacement. The device also has protection against heat dissipation, overvoltage, and short circuit during its movement. The device realizes digital control of the film stretching tension prefabrication process through a digital contact screen. It has a compact structure, is easy to operate, simple to maintain, and is safe and reliable.

[0027] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A thin film tensile tension prefabrication device, characterized in that, include: A frame (1) is provided with a film stretching module (2) on the worktable (11) of the frame (1). The film stretching module (2) is used to clamp the edge of the film and stretch the film in a preset direction. The film stretching module (2) includes a fixed film clamping mechanism (21) and at least three film stretching mechanisms (22). The fixed film clamping mechanism (21) and the film stretching mechanism (22) are both fixed on the worktable (11) and distributed around the film. The film stretching mechanism (22) is used to clamp the edge of the film and stretch the film in a preset direction. The support module (3) is connected to the frame (1) and located below the film. The support module (3) has a support surface for placing the adhesive structure of the film. The support module (3) includes a support mold (31) with the support surface and a support electric cylinder (32) supporting the support mold (31). One end of the support electric cylinder (32) is hinged to the frame (1), and the other end is hinged to the convex surface of the support mold (31). A film pressing module (4) is connected to the frame (1) and located above the film. The film pressing module (4) is provided with a lifting mold (41). The film pressing mold (41) is provided with a pressing curved surface that fits against the bonding surface of the adhesive structure. The pressing curved surface of the film pressing mold (41) is used to press the film onto the bonding surface of the adhesive structure so that the film is bonded to the adhesive structure. The film pressing module (4) includes a lifting drive mechanism (42), a lifting frame (43), and a transfer frame (44). The lifting drive mechanism (42) is fixed on the frame (1). The lifting drive mechanism (42) is connected to the lifting frame (43). The lifting frame (43) is connected to the film pressing mold (41) through the transfer frame (44).

2. The film tensile tension preforming device according to claim 1, characterized in that, The film clamping mechanism (21) is provided with a mounting clip (211). The mounting clip (211) includes a U-shaped seat (2111), a fixed clamping plate (2112), a movable clamping plate (2113), and a clamping drive (2114). The U-shaped seat (2111) is fixed on the worktable (11). The fixed clamping plate (2112) is fixed on one side plate of the U-shaped seat (2111). The movable clamping plate (2113) is slidably connected to the U-shaped seat (2111). The clamping drive (2114) is connected to the movable clamping plate (2113) and is used to drive the movable clamping plate (2113) to approach the fixed clamping plate (2112) to clamp the film.

3. The film tensile tension preforming device according to claim 2, characterized in that, The film stretching mechanism (22) includes the mounting clamp (211) and the film stretching drive (221). The film stretching drive (221) is fixed on the worktable (11) and is used to drive the mounting clamp (211) to move so as to stretch the film along a preset direction.

4. The film tensile tension preforming device according to claim 1, characterized in that, The bearing mold (31) is provided with a limiting mechanism for positioning the adhesive structure placed on the bearing surface.

5. The film tensile tension preforming device according to claim 1, characterized in that, The pressing module (4) also includes a mold fine-tuning drive (45). The lifting frame (43) is slidably connected to the adapter frame (44), and the mold fine-tuning drive (45) is installed between the lifting frame (43) and the adapter frame (44). The mold fine-tuning drive (45) is used to drive the adapter frame (44) to move along a preset direction to adjust the relative position of the pressing mold (41) and the supporting mold (31).

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