Biaxially oriented BOPA (biaxially oriented polyamide) film production device

Abstract

The utility model relates to the technical field of BOPA (biaxially oriented polyamide) film production, and provides a biaxially oriented BOPA film production device which comprises a workbench, a rotating rod is rotatably connected in the workbench, a plurality of synchronous rods are fixedly connected to the top of the rotating rod, one end, far away from the rotating rod, of each synchronous rod is rotatably connected with a connecting rod, and the connecting rod is fixedly connected with the workbench. The end, away from the synchronous rod, of the connecting rod is rotationally connected with a connecting rod, the top of the workbench is fixedly connected with a pressure bearing table, a plurality of through grooves are formed in the pressure bearing table, the outer surface of the connecting rod is arranged in the through grooves, and the top of the connecting rod is rotationally connected with an outward extending rod. And a plurality of film clamps are fixedly connected to one side of the overhanging rod. According to the two-way synchronous stretching device, the two-way synchronous stretching function is achieved, the size change of the film in the two directions is more uniform and stable, in the using process, the film is not prone to deformation or shrinkage or expansion, the film can better meet the requirements for various packaging shapes and sizes, and the sealing performance and the appearance quality of packaging are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of BOPA film production, in particular to a biaxially stretched BOPA film production device. Background Art

[0002] BOPA film production equipment has the following main functions: Small biaxially oriented BOPA film production equipment can be used in the laboratory to conduct film forming experiments and determine the type and dosage of additives, thereby developing BOPA film products with better performance and lower costs. Advanced production equipment can achieve automated and continuous production, improve production efficiency, and reduce labor costs. Optimization of production equipment can improve the utilization rate of raw materials, reduce energy consumption and waste generation, and thus reduce production costs.

[0003] However, in the prior art, for example, China Publication No.: CN115302750A, "A film biaxial stretching device", the invention discloses a film biaxial stretching device, including a first and a second stretching device, the first stretching device including a first stretching mechanism, a traction mechanism and a driving device; the first diamond traction mechanism is located between the two first stretching mechanisms and is slidably connected thereto, and the first driving device is slidably connected to the first stretching mechanism; the second stretching device includes a second stretching mechanism, a diamond traction mechanism and a driving device; the second diamond traction mechanism is located between the second stretching mechanisms and is slidably connected thereto, and the second driving device is slidably connected to the second stretching mechanism; the first diamond traction mechanism has a first clamping portion, the second diamond traction mechanism has a second clamping portion, and the first and second clamping portions are used to clamp the film; the first diamond traction mechanism is slidably connected to the second stretching mechanism; the second diamond traction mechanism is slidably connected to the first stretching mechanism.

[0004] However, this device is not equipped with bidirectional synchronous stretching, and the dimensional changes of the film in two directions are not uniform and stable enough. During use, the film is prone to deformation, shrinkage or expansion, and cannot better adapt to various packaging shapes and size requirements, and cannot ensure the sealing and appearance quality of the packaging. The device is not equipped with a downward pressure heat setting structure. The device will produce wrinkles due to stress during the stretching process, and cannot keep the film flat during the heat setting process by applying a certain pressure, which brings difficulties to subsequent processing and affects production efficiency and product quality. Utility Model Content

[0005] The purpose of the utility model is to solve the problems in the prior art, such as the uneven and unstable dimensional changes of the film in two directions, the tendency of the film to deform, shrink or expand during use, the inability to better adapt to various packaging shapes and size requirements, the inability to ensure the sealing and appearance quality of the packaging, the device will produce wrinkles due to stress generated during the stretching process, and the film cannot be kept flat during the heat setting process by applying a certain pressure, which brings difficulties to subsequent processing and affects production efficiency and product quality.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a biaxially oriented BOPA film production device, comprising a workbench, the interior of the workbench is rotatably connected to a rotating rod, the top of the rotating rod is fixedly connected to a plurality of synchronization rods, the end of the synchronization rod away from the rotating rod is rotatably connected to a connecting rod, the end of the connecting rod away from the synchronization rod is rotatably connected to a connecting rod, the top of the workbench is fixedly connected to a pressure platform, a plurality of through grooves are provided on the pressure platform, the outer surface of the connecting rod is arranged inside the through groove, the top of the connecting rod is rotatably connected to an outrigger rod, and one side of the outrigger rod is fixedly connected to a plurality of film clamps, and the film clamp 9 is a clamp specifically for sheet objects.

[0007] As a preferred embodiment, two wedge blocks are fixedly connected to the bottom of the outrigger rod, and a plurality of wedge grooves are provided on the pressure platform. The outer surfaces of the wedge blocks are movably embedded in the inside of the wedge grooves. Because the wedge blocks at the bottom of the outrigger rods can only move along the groove direction of the wedge grooves, the four outrigger rods will move outward along the groove direction of the wedge grooves at the same time.

[0008] As a preferred embodiment, the bottom of the rotating rod is fixedly connected to a worm wheel, and the outer surface of the worm wheel is meshedly connected to a worm. Under the meshing action of the worm on the worm wheel, the rotating rod is placed inside the workbench and rotates.

[0009] As a preferred embodiment, the outer surface of the worm is rotatably connected to two shaft plates and extends one end, the tops of the two shaft plates are fixedly connected to the bottom of the workbench, the bottom of the workbench is fixedly connected to a first motor, the output end of the first motor is fixedly connected to the end extending from the worm, and the worm can rotate inside the shaft plate.

[0010] As a preferred embodiment, two support plates are fixedly connected to the top of the workbench, and the tops of the two support plates are fixedly connected to a main casing, which is fixed above the workbench through the support plates.

[0011] As a preferred embodiment, the top of the main housing is rotatably connected to a threaded rod, the outer surface of the threaded rod is threadedly connected to a heating block, the outer surface of the heating block is movably embedded in the bottom of the main housing, and rotating the thread will drive the heating block.

[0012] As a preferred embodiment, one side of the heating block is fixedly connected to a follower rod, the end of the follower rod away from the heating block is fixedly connected to a limiting sleeve, the inner surface of the main housing is fixedly connected to the limiting rod, the outer surface of the limiting rod is movably embedded in the inner surface of the limiting sleeve, and the limiting sleeve connected to one side of the heating block through the follower rod can only move along the axial direction of the limiting rod.

[0013] As a preferred embodiment, two L-shaped plates are fixedly connected to the top of the main housing, a second motor is fixedly connected to the inner sides of the two L-shaped plates, the output end of the second motor is fixedly connected to the top of the threaded rod, and the second motor is fixed above the main housing through the L-shaped plates.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are:

[0015] The utility model is provided with a device for bidirectional synchronous stretching, and the dimensional changes of the film in two directions are more uniform and stable. During use, the film is not easy to deform, shrink or expand, and can better adapt to various packaging shapes and size requirements, ensuring the sealing and appearance quality of the packaging.

[0016] The utility model provides a device with a downward pressure heat setting structure to prevent wrinkles from being generated due to stress during the stretching process. By applying a certain pressure, the film can be kept flat during the heat setting process, avoiding difficulties in subsequent processing and not affecting production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of a biaxially oriented BOPA film production device provided by the utility model;

[0018] Figure 2 This is a schematic diagram of the top structure of a biaxially oriented BOPA film production device provided by the utility model;

[0019] Figure 3 This is a schematic diagram of the bottom structure of a biaxially oriented BOPA film production device provided by the utility model;

[0020] Figure 4 This is a schematic diagram of the disassembled structure of a biaxially oriented BOPA film production device provided by the utility model;

[0021] Figure 5 The utility model provides a schematic cross-sectional structure diagram of a main casing in a biaxially oriented BOPA film production device.

[0022] Legend:

[0023] 1. Workbench; 2. Rotating rod; 3. Synchronous rod; 4. Connecting rod; 5. Connecting rod; 6. Pressure platform; 7. Through slot; 8. Extending rod; 9. Film clamp; 10. Wedge block; 11. Wedge slot; 12. Worm gear; 13. Worm; 14. Shaft plate; 15. First motor; 16. Support plate; 17. Main housing; 18. Threaded rod; 19. Heating block; 20. Follow-up rod; 21. Limit sleeve; 22. Limit rod; 23. L-shaped plate; 24. Second motor. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figures 1 to 5 The utility model provides a technical solution: a biaxially oriented BOPA film production device, comprising a workbench 1, the workbench 1 is rotatably connected to a rotating rod 2 inside, a plurality of synchronous rods 3 are fixedly connected to the top of the rotating rod 2, the end of the synchronous rod 3 away from the rotating rod 2 is rotatably connected to a connecting rod 4, the end of the connecting rod 4 away from the synchronous rod 3 is rotatably connected to a connecting rod 5, the top of the workbench 1 is fixedly connected to a pressure platform 6, a plurality of through grooves 7 are provided on the pressure platform 6, the outer surface of the connecting rod 5 is arranged inside the through groove 7, the top of the connecting rod 5 is rotatably connected to an overhanging rod 8, and a plurality of film clamps 9 are fixedly connected to one side of the overhanging rod 8. The synchronous rod 3 that rotates with the rotating rod 2 will drive one end of the connecting rod 4, and the other end of the connecting rod 4 will allow the connecting rod 5 to be at one end inside the through groove 7.

[0026] like Figures 1 to 5 As shown, two wedge blocks 10 are fixedly connected to the bottom of the outrigger rod 8, and a plurality of wedge grooves 11 are provided on the pressure platform 6. The outer surface of the wedge block 10 is movably embedded in the inside of the wedge groove 11, and the wedge block 10 at the bottom of the outrigger rod 8 can only move along the slotting direction of the wedge groove 11.

[0027] like Figures 1 to 5 As shown, the bottom of the rotating rod 2 is fixedly connected to a worm wheel 12, and the outer surface of the worm wheel 12 is meshed with a worm 13. Under the meshing action of the worm 13 on the worm wheel 12, the rotating rod 2 is placed inside the workbench 1 and rotates.

[0028] like Figures 1 to 5As shown, the outer surface of the worm 13 is rotatably connected to two shaft plates 14 and extends one end. The tops of the two shaft plates 14 are fixedly connected to the bottom of the workbench 1. The bottom of the workbench 1 is fixedly connected to a first motor 15. The output end of the first motor 15 is fixedly connected to the end extending from the worm 13. When the first motor 15 is energized, it drives the worm 13 to rotate inside the shaft plate 14.

[0029] like Figures 1 to 5 As shown, two support plates 16 are fixedly connected to the top of the workbench 1 , and a main housing 17 is fixedly connected to the top of the two support plates 16 . The main housing 17 is fixed above the workbench 1 through the support plates 16 .

[0030] like Figures 1 to 5 As shown, the top of the main housing 17 is rotatably connected to a threaded rod 18, the outer surface of the threaded rod 18 is threadedly connected to a heating block 19, and the outer surface of the heating block 19 is movably embedded in the bottom of the main housing 17, and rotating the thread will drive the heating block 19.

[0031] like Figures 1 to 5 As shown, one side of the heating block 19 is fixedly connected to a follower rod 20, and the end of the follower rod 20 away from the heating block 19 is fixedly connected to a limiting sleeve 21. The inner surface of the main housing 17 is fixedly connected to the limiting rod 22, and the outer surface of the limiting rod 22 is movably embedded in the inner surface of the limiting sleeve 21. The limiting sleeve 21 connected to the follower rod 20 on one side of the heating block 19 can only move along the axial direction of the limiting rod 22, so the rotating thread can drive the heating block 19 to move downward along the axial direction of the limiting rod 22, and compact and iron the wrinkled film.

[0032] like Figures 1 to 5 As shown, two L-shaped plates 23 are fixedly connected to the top of the main housing 17, and a second motor 24 is fixedly connected to the inner side of the two L-shaped plates 23. The output end of the second motor 24 is fixedly connected to the top of the threaded rod 18. When the second motor 24 is energized, it will drive the threaded rod 18 to rotate at the top of the main housing 17.

[0033] Working principle: First, place the film to be stretched on the top of the pressure table 6, and then fix the outside of the film with the film clamp 9. The film clamp 9 is a clamp specially designed for sheet objects. Then start the external power supply of the first motor 15. The model of the first motor 15 is DOY106, and the rated power is 750W. After the first motor 15 is energized, it will drive the worm 13 to rotate inside the shaft plate 14. At the same time, under the meshing action of the worm 13 on the worm wheel 12, the rotating rod 2 will be placed inside the workbench 1 to rotate. The synchronous rod 3 that rotates with the rotating rod 2 will drive one end of the connecting rod 4. The other end of the connecting rod 4 will allow the connecting rod 5 to be at one end inside the through groove 7. Because the wedge block 10 at the bottom of the outrigger rod 8 can only move along the slotting direction of the wedge groove 11, the four outrigger rods 8 will simultaneously move along the wedge groove 1 1 moves outward in the slotting direction and performs biaxial stretching on the film. After stretching, wrinkles will be generated in the film. Then the external power supply of the second motor 24 is started. The model of the second motor 24 is BYG, and the rated power is 220W. The second motor 24 is fixed on the top of the main casing 17 through the L-shaped plate 23. The main casing 17 is fixed on the top of the workbench 1 through the support plate 16. After the second motor 24 is energized, it will drive the threaded rod 18 to rotate on the top of the main casing 17. The rotating thread will drive the heating block 19. The limiting sleeve 21 connected to the follower rod 20 on one side of the heating block 19 can only move along the axial direction of the limiting rod 22. Therefore, the rotating thread can drive the heating block 19 to move downward along the axial direction of the limiting rod 22, and compact and iron the wrinkled film.

[0034] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A biaxially oriented BOPA film production device, comprising a workbench (1), characterized in that: The workbench (1) is rotatably connected to a rotating rod (2) inside, and a plurality of synchronous rods (3) are fixedly connected to the top of the rotating rod (2), and the end of the synchronous rod (3) away from the rotating rod (2) is rotatably connected to a connecting rod (4), and the end of the connecting rod (4) away from the synchronous rod (3) is rotatably connected to a connecting rod (5), and the top of the workbench (1) is fixedly connected to a pressure platform (6), and a plurality of through grooves (7) are provided on the pressure platform (6), and the outer surface of the connecting rod (5) is arranged inside the through grooves (7), and the top of the connecting rod (5) is rotatably connected to an extension rod (8), and a plurality of film clamps (9) are fixedly connected to one side of the extension rod (8).

2. The biaxially oriented BOPA film production device according to claim 1, characterized in that: Two wedge blocks (10) are fixedly connected to the bottom of the extension rod (8), a plurality of wedge grooves (11) are provided on the pressure platform (6), and the outer surfaces of the wedge blocks (10) are movably embedded in the inside of the wedge grooves (11).

3. The biaxially oriented BOPA film production device according to claim 2, characterized in that: The bottom of the rotating rod (2) is fixedly connected to a worm wheel (12), and the outer surface of the worm wheel (12) is meshingly connected to a worm (13).

4. The biaxially oriented BOPA film production device according to claim 3, characterized in that: The outer surface of the worm (13) is rotatably connected to two shaft plates (14) and extends out at one end. The tops of the two shaft plates (14) are fixedly connected to the bottom of the workbench (1). The bottom of the workbench (1) is fixedly connected to a first motor (15). The output end of the first motor (15) is fixedly connected to the end extending out of the worm (13).

5. The biaxially oriented BOPA film production device according to claim 4, characterized in that: Two support plates (16) are fixedly connected to the top of the workbench (1), and a main housing (17) is fixedly connected to the top of the two support plates (16).

6. The biaxially oriented BOPA film production device according to claim 5, characterized in that: The top of the main housing (17) is rotatably connected to a threaded rod (18), the outer surface of the threaded rod (18) is threadably connected to a heating block (19), and the outer surface of the heating block (19) is movably embedded in the bottom of the main housing (17).

7. The biaxially oriented BOPA film production device according to claim 6, characterized in that: A follower rod (20) is fixedly connected to one side of the heating block (19), and an end of the follower rod (20) away from the heating block (19) is fixedly connected to a limiting sleeve (21). The inner surface of the main housing (17) is fixedly connected to the limiting rod (22), and the outer surface of the limiting rod (22) is movably embedded in the inner surface of the limiting sleeve (21).

8. The biaxially oriented BOPA film production device according to claim 7, characterized in that: Two L-shaped plates (23) are fixedly connected to the top of the main housing (17), a second motor (24) is fixedly connected to the inner sides of the two L-shaped plates (23), and an output end of the second motor (24) is fixedly connected to the top of the threaded rod (18).

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