Top and bottom film forming mechanism

Abstract

The utility model relates to a top and bottom film forming mechanism in the field of pressed film forming, which comprises a support plate, a telescopic guide shaft is connected onto the support plate, one tail end of the guide shaft is connected with a pressed film plate, a reset elastic piece is arranged on the support plate, and a plurality of edge covering pressing plates are arranged on the support plate and distributed around the periphery of the pressed film plate. A plurality of edge covering pressing plates are arranged on the supporting plate, a driving part used for driving the edge covering pressing plates to be opened or closed relative to the periphery of the film pressing plate at the same time is connected to the supporting plate, and soft pressing strips are detachably connected to the inner sides, close to the film pressing plate, of the edge covering pressing plates. The wrapping forming effect and integrity of the top film or the bottom film are improved, and when the edge wrapping pressing plate is in an open state, the soft pressing strip is separated from the edge part of the film, so that the influence that the film is driven to deviate, fold or damage during resetting is prevented, and the qualified integrity and the production efficiency of top and bottom film forming are improved.

Description

Technical Field

[0001] This utility model relates to the field of pressure molding, specifically to a top and bottom film molding mechanism. Background Technology

[0002] Top and bottom films, as crucial components of the packaging industry, are widely used in the packaging of various products. These films are precisely cut, positioned, and fixed using specific forming mechanisms to ensure the integrity and protection of the product during the packaging process. In these applications, top and bottom films not only fulfill basic packaging functions but also often bear multiple protective responsibilities, including moisture protection, dust protection, and damage prevention. Meanwhile, the design and manufacturing of top and bottom film forming mechanisms are continuously being optimized to improve packaging efficiency and reduce costs.

[0003] Existing top-and-bottom film forming packaging mechanisms typically consist of multiple components, including a film conveying system, forming molds, cutting devices, and positioning mechanisms. These mechanisms, through precise mechanical transmission and electrical control, achieve automatic film conveying, cutting, forming, and positioning, thereby greatly improving the automation level and efficiency of packaging.

[0004] However, despite significant advancements in existing top and bottom film forming mechanisms, some shortcomings and deficiencies remain in practical applications. In existing technologies, the top and bottom films are typically formed by pressing a film against the top or bottom of the product and then rolling it with pressure rollers. However, during the repositioning process after pressing, the adhesive may not be fully dried, and some adhesive may seep out during the rolling process. This seepage can cause the film to warp, be carried away during repositioning, or become misaligned or wrinkled. In severe cases, it can even damage the film, affecting the forming effect and production efficiency of the top or bottom film. Utility Model Content

[0005] The purpose of this utility model is to solve the above defects and provide a top and bottom film forming mechanism to solve the technical problem in the prior art where the original path reset of the pressure rollers after the existing top and bottom film roll forming easily leads to the film material shifting, wrinkling, or lifting, thereby affecting the forming effect of the top and bottom film and the product and the production efficiency.

[0006] The objective of this utility model is achieved through the following means:

[0007] A top and bottom film forming mechanism includes a support plate, on which a retractable guide shaft is connected. One end of the guide shaft is connected to a pressure plate for pressing the top or bottom film. The pressure plate can move away from or closer to the support plate by the telescopic movement of the guide shaft. The support plate is provided with a reset elastic element for continuously providing elastic force to the pressure plate. The support plate is provided with multiple edge-sealing pressure plates distributed around the periphery of the pressure plate. The support plate is also connected with a driving element for simultaneously driving the multiple edge-sealing pressure plates to open or close relative to the periphery of the pressure plate. A soft pressure strip is detachably connected to the inner side of the edge-sealing pressure plate near the pressure plate.

[0008] Furthermore, as described above, a gap is formed between the outer surface of the pressure plate and the outer surface of the soft pressure strip.

[0009] When the pressure plate presses the film against the top or bottom of the product, the gap created allows the soft pressure strip to roll along the outer edge of the product, thereby further ensuring the film wraps around the top or bottom of the product. The gap also facilitates the movement and wrapping of the film during the forming process.

[0010] Furthermore, as described above, the support plate is coaxially connected to the guide shaft via a bushing. The guide shaft can slide along the axial direction of the bushing, and one end of the guide shaft passes through the bushing and is connected to the pressure plate.

[0011] By setting the bushing and guide shaft to be coaxially connected, the guide shaft can drive the pressure plate to move along the axial direction of the bushing, which improves the stability of the pressure plate in pressing and forming and has a buffering effect on the pressure of the film, preventing the film from being damaged by squeezing.

[0012] Furthermore, as described above, the edge-binding pressure plate is provided with a snap-fit ​​groove, and the soft pressure strip is detachably snapped into the snap-fit ​​groove via a snap-fit ​​part.

[0013] The soft pressure strip is connected to the buckle groove through the plug part, which makes it easy to disassemble, repair or replace the soft pressure strip in the future, improving the convenience and flexibility of use.

[0014] Furthermore, as described above, the interior of the soft pressure strip has a hollow cavity structure.

[0015] The cavity design inside the soft pressure strip provides cushioning elasticity when the soft pressure strip squeezes the film along the periphery of the product, further enhancing the ability of the soft pressure strip to smoothly and tightly compress and wrap the film to the top or bottom of the product.

[0016] Furthermore, as described above, the soft pressure strip is arranged in an arc shape near the outer surface of the pressure plate.

[0017] The soft pressure strip has an arc-shaped extrusion surface for rolling the film, which is formed by the arc shape. This allows the film to contact the film and wrap around the product, improving the stability and reliability of the film rolling process and reducing the rolling wrinkles or damage to the film.

[0018] Furthermore, as described above, the soft pressure strip is made of silicone.

[0019] The soft pressure strip made of silicone material further improves the effect of film roll forming. The silicone soft pressure strip presses the film and product packaging more smoothly and tightly, and the silicone structure improves the durability of the soft pressure strip.

[0020] Furthermore, as described above, the driving component is made of a gripper cylinder, the driving component is mounted on a support plate, and the gripping end of the driving component is connected to the edge-sealing pressure plate through a connector. The edge-sealing pressure plate can be opened or closed by the opening or gripping action of the gripping end of the driving component.

[0021] Specifically, after the pressure plate presses against the top or bottom of the product, and the soft pressure strip rolls the film material to wrap the perimeter of the product, the clamping end of the gripper cylinder can drive the edge-wrapping pressure plate to expand outward. This prevents the edge-wrapping pressure plate from causing the soft pressure strip to return to its original path, which could lead to displacement, wrinkles, or damage to the edge-wrapping film. This improves the stability and reliability of the top and bottom film wrapping of the product.

[0022] The gripping end of the clamping cylinder can drive multiple edge-sealing plates to open or close, further ensuring that the soft pressure strips on the edge-sealing plates can contact or detach from the diaphragm.

[0023] Furthermore, as described above, the pressure plate is configured as a circle, rectangle, or polygon.

[0024] In some embodiments, a corresponding pressure plate is provided depending on the formation of the top or bottom of the product.

[0025] In some embodiments, the edge-sealing plates can be distributed around the periphery of the film-pressing plate according to the shape of the product, so that when the film-pressing plate presses the film against the top or bottom of the product, the multiple edge-sealing plates can be driven by the driving member to perform edge-sealing processing along the periphery of the product.

[0026] Furthermore, as described above, the reset elastic element is made of a spring, is sleeved with the guide shaft, and is disposed between the support plate and the pressure plate.

[0027] Specifically, the reset elastic element provides a continuous elastic force to the pressure plate away from the support plate. When the pressure plate is subjected to force and moves closer to the support plate, the reset elastic element is compressed. After the pressure plate is released, the reset elastic element can drive the pressure plate to reset.

[0028] The beneficial effects of this utility model are as follows: The pressure plate achieves uniform pressure on the film, contributing to the formation of a smooth and consistent film sheet. The telescopic function of the guide shaft allows the pressure plate to move away from or closer to the support plate. The pressure plate effectively presses and releases the top or bottom film, improving the flexibility and stability of the film forming operation. Edge-sealing plates are distributed around the periphery of the pressure plate, effectively sealing the film edge to the product. The driving component can drive multiple edge-sealing plates to open or close relative to the periphery of the pressure plate. When the driving component drives the edge-sealing plates to close, the soft pressure strip contacts the edge of the film sheet, and under the drive of the external moving mechanism, the sealing effect between the film edge and the product is smoother and tighter, improving the wrapping effect and integrity of the top or bottom film. When the edge-sealing plates are opened under the drive of the driving component, the soft pressure strip disengages from the edge of the film sheet, preventing the edge-sealing plates from causing the film to shift, wrinkle, or be damaged during resetting. This is beneficial for improving the quality and integrity of the top and bottom film forming and increasing production efficiency. Attached Figure Description

[0029] Figure 1 This is a front view schematic diagram of the overall structure of the top and bottom membrane forming mechanism in this embodiment;

[0030] Figure 2 This is a rear view schematic diagram of the overall structure of the top and bottom membrane forming mechanism in this embodiment;

[0031] Figure 3 This is a partial structural diagram of the top and bottom membrane forming mechanism in this embodiment;

[0032] Figure 4 for Figure 3 A magnified schematic diagram of the structure of part A in the diagram;

[0033] Figure 5 This is a front view of the top and bottom membrane forming mechanism in this embodiment;

[0034] Figure 6 for Figure 5 Sectional view of BB;

[0035] Figure 7 This is a schematic diagram of the two-component molding mechanism in this embodiment;

[0036] Figure 8 This is a schematic diagram of the membrane forming process of the two forming mechanisms in this embodiment;

[0037] Figure 9 This is a front view connection and installation diagram of the membrane forming mechanism in this embodiment;

[0038] Figure 10 This is a rear view connection and installation diagram of the membrane forming mechanism in this embodiment;

[0039] Figure 11 This is a schematic diagram showing the connection and use of the top and bottom membrane forming mechanism in this embodiment;

[0040] The reference numerals in the figure are as follows: 1-Support plate, 2-Guide shaft, 3-Pressure film plate, 4-Reset elastic element, 5-Edge sealing pressure plate, 6-Drive element, 7-Soft pressure strip, 8-Shaft sleeve, 9-Snap-in groove, 10-Snap-in part, 11-Cavity structure, 12-Connector, 13-Pressure moving module, 14-Moving mechanism, 15-Pressure moving cylinder, 16-Film taking mechanism, 17-Cutter. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0042] In this embodiment, refer to Figures 1-11 The specific implementation of the top and bottom film forming mechanism includes a support plate 1, on which a telescopic guide shaft 2 is connected. One end of the guide shaft 2 is connected to a pressure plate 3 for pressing the top or bottom film. The pressure plate 3 can move away from or closer to the support plate 1 through the telescopic movement of the guide shaft 2. The support plate 1 is provided with a reset elastic element 4 for continuously providing elastic force to the pressure plate 3. The support plate 1 is provided with a plurality of edge-sealing pressure plates 5 distributed around the periphery of the pressure plate 3. In this embodiment, the packaged product is a rectangular structure, and four edge-sealing pressure plates 5 are provided. The support plate 1 is connected with a driving element 6 for driving the four edge-sealing pressure plates 5 to open or close relative to the periphery of the pressure plate 3. A soft pressure strip 7 is detachably connected to the inner side of the edge-sealing pressure plate 5 near the pressure plate 3.

[0043] A gap is formed between the outer surface of the pressure plate 3 and the outer surface of the soft pressure strip 7. When the pressure plate 3 presses the film against the top or bottom of the product, the soft pressure strip 7 can be rolled along the outer edge of the product through the gap, thereby further ensuring the wrapping of the film with the top or bottom of the product. The gap facilitates the movement and wrapping of the film during the forming process.

[0044] Optionally, the support plate 1 is connected to the external pressure moving module 13, so that the pressure moving module 13 can drive the pressure plate 3 and multiple edge-sealing pressure plates 5 on the support plate 1 to move towards the top or bottom of the product.

[0045] Reference Figure 2 and Figure 6The support plate 1 is coaxially connected to the guide shaft 2 via a bushing 8. The guide shaft 2 can slide along the axial direction of the bushing 8, and one end of the guide shaft 2 passes through the bushing 8 and connects to the pressure plate 3. This coaxial connection between the bushing 8 and the guide shaft 2 allows the guide shaft 2 to drive the pressure plate 3 to move along the axial direction of the bushing 8, improving the stability of the pressure plate 3 during molding and providing a buffering effect against the pressure on the film, preventing damage to the film from compression.

[0046] Optionally, when the top and bottom film forming mechanism driven by the pressing and moving module 13 moves closer to the product, the connection between the guide shaft 2 and the pressure plate 3 causes the pressure plate 3 to be subjected to the reverse force of the product when pressing the film against the top or bottom of the product. Under the sliding of the guide shaft 2 along the bushing 8, the pressure plate 3 moves closer to the support plate 1, that is, the reset elastic element 4 is compressed. Conversely, when the top and bottom film forming mechanism driven by the pressing and moving module 13 moves away from the product, the reset elastic element 4 drives the pressure plate 3 to reset.

[0047] Reference Figure 3 and 4 The edge-sealing plate 5 is provided with a snap-fit ​​groove 9, and the soft pressure strip 7 is detachably snapped to the snap-fit ​​groove 9 via a snap-fit ​​part 10. The interior of the soft pressure strip 7 forms a hollow cavity structure 11. The soft pressure strip 7 is arc-shaped near the outer surface of the pressure plate 3. Specifically, in this embodiment, the soft pressure strip 7 is made of silicone.

[0048] The flexible pressure strip 7 is connected to the snap-fit ​​groove 9 via the snap-fit ​​part 10, facilitating subsequent disassembly, maintenance, or replacement, thus improving ease of use and flexibility. The internal cavity of the flexible pressure strip 7 provides cushioning elasticity when the strip compresses the film along the product's periphery, further enhancing the smooth and tight compression of the film to the top or bottom of the product. The flexible pressure strip 7 features an arc-shaped extrusion surface for rolling the film, allowing it to contact the film and wrap it around the product, improving the stability and reliability of the film rolling process and reducing wrinkles or damage. In this embodiment, the silicone-made flexible pressure strip 7 further enhances the film rolling effect, providing a more stable and tight compression of the film and product packaging. The silicone structure also improves the durability of the flexible pressure strip 7. Alternatively, in some embodiments, the soft pressure strip 7 may be made of other soft materials such as sponge.

[0049] Specifically, refer to Figure 2 , 3 and Figure 7In this embodiment, the driving component 6 is made of a four-jaw cylinder. The driving component 6 is mounted on the support plate 1, and the clamping end of the driving component 6 is connected to the edge-sealing pressure plate 5 through the connecting component 12. The opening or closing action of the clamping end of the driving component 6 can drive the edge-sealing pressure plate 5 to open or close. In this embodiment, the initial state is when the four-jaw cylinder drives the four edge-sealing pressure plates 5 to close.

[0050] Specifically, after the pressure plate 3 presses against the top or bottom of the product, and the soft pressure strip 7 rolls the film material to wrap the outer edge of the product, the four edge-wrapping pressure plates 5 can be driven to expand outward simultaneously through the clamping end of the four-jaw cylinder. This prevents the soft pressure strip 7 on the edge-wrapping pressure plate 5 from resetting along its original path, which could cause the edge-wrapping film to shift, wrinkle, or be damaged, thus improving the stability and reliability of the top and bottom film wrapping of the product.

[0051] The clamping end of the four-jaw cylinder can drive the four edge-sealing pressure plates 5 to open or close, further ensuring that the soft pressure strips 7 on the edge-sealing pressure plates 5 can contact or detach from the diaphragm.

[0052] Optionally, the exemplary drive unit 6 can be other cylinders such as two-claw, three-claw, four-claw, and five-claw.

[0053] The pressure plate 3 has a rectangular structure. The four edge-sealing plates 5 can be distributed around the periphery of the product according to its shape, so that when the pressure plate 3 presses the film against the top or bottom of the product, the driving component 6 can drive the four edge-sealing plates 5 to perform edge-sealing treatment along the periphery of the product.

[0054] The reset elastic element 4 is made of a spring and is sleeved with the guide shaft 2. The reset elastic element 4 is disposed between the support plate 1 and the pressure plate 3. The reset elastic element 4 provides the pressure plate 3 with a continuous elastic force that moves it away from the support plate 1. When the pressure plate 3 is forced to move closer to the support plate 1, the reset elastic element 4 is compressed. After the force on the pressure plate 3 is released, the reset elastic element 4 can drive the pressure plate 3 to reset.

[0055] The reset elastic element 4 provides continuous elastic support for the pressure plate 3, ensuring that the pressure plate 3 can quickly and stably reset after each pressure operation, preparing for the next operation and improving work efficiency and equipment stability.

[0056] In this embodiment, refer to Figure 7 and Figure 8 The top and bottom film forming mechanism is provided in two sets, and the two sets of top and bottom film forming mechanisms are symmetrically arranged on both sides of the product with the product as the central axis, so that the two sets of film forming mechanisms are used to match the film forming packaging of the top and bottom of the product.

[0057] The specific structure in this embodiment differs from the prior art in that: two sets of film forming mechanisms are symmetrically distributed on both sides of the product, and each set of film forming mechanisms is connected to two sets of moving mechanisms 14, allowing the film forming mechanisms to move relatively closer to or away from the top or bottom of the product via the moving mechanisms 14. For example, see [reference needed]. Figure 11 The two film forming mechanisms can simultaneously move closer to or further away from the product through the drive of the two moving mechanisms 14.

[0058] As an example, the molding mechanism is connected to the sliding plate of the pressing and moving module 13 via the support plate 1, so that the pressing and moving module 13 can drive the molding mechanism to move as a whole by the extension and retraction of the pressing and moving cylinder 15.

[0059] For example, refer to Figure 8 In this embodiment, the film forming mechanism is applied to the packaging of the top and bottom films of the cylindrical combination fireworks box. Specifically, the support plate 1 is connected to the sliding plate of the pressure moving module 13, so that the forming mechanism can be driven to move the entire box body closer to one side under the extension and retraction drive of the pressure moving cylinder 15. Specifically, the fireworks box body is a cuboid structure and is in a folded state, with the top and bottom of the fireworks box body located on the left and right sides when folded.

[0060] Reference Figures 7-11 The forming mechanism is provided in two sets and is respectively installed on the left / right moving mechanism 14 via the pressing moving module 13. The left / right moving mechanism 14 is connected to the pressing moving module 13 via the moving seat and can drive the forming mechanism to move relative to the left / right sides of the fallen fireworks box.

[0061] The specific forming actions of the top and bottom films in this embodiment are as follows: the film is conveyed by the external film feeding mechanism and passes through the film taking mechanism 16 set on the left / right moving mechanism 14. The film taking mechanism 16 is vertically installed on the moving base. The film is stretched between the fireworks box and the forming mechanism through the mold taking mechanism. At this time, the four edge-sealing pressure plates 5 in this embodiment drive the soft pressure strip 7 to the initial closed state. The support plate 1 is provided with a cutter 17 for cutting the film. The pressing moving module 13 drives the forming mechanism to move towards the top and bottom of the fireworks box at the same time, and makes the two forming mechanisms press the film on both sides against the top and bottom of the fireworks box respectively. At the same time, under the drive of the pressing moving module 13, the cutter 17 cuts the film to form a film for wrapping the top and bottom of the fireworks box.

[0062] And under the drive of the pressure moving module 13, the four edge-sealing pressure plates 5 respectively contact and roll the periphery of the film along the outer side of the fireworks box body through the four soft pressure strips 7, so that the edge part of the film can be wrapped around the outer side of the fireworks box body to complete the edge-sealing process.

[0063] After the edge wrapping process is completed, the four edge wrapping pressure plates 5 are opened simultaneously by the four-claw cylinder, so that the soft pressure strips 7 on the four edge wrapping pressure plates 5 are separated from the outer side of the fireworks box. At this time, under the reset drive of the pressure moving module 13, the problem of the film being displaced, wrinkled or damaged during the reset can be prevented, thereby improving the quality integrity of the top and bottom film forming and production efficiency.

[0064] In summary, the pressure plate 3 acts directly on the top or bottom film, and the driving component 6 can drive the edge-sealing pressure plate 5 to close or open. When closed, the soft pressure strip 7 makes the edge of the film and the edge-sealing effect of the product smoother and tighter, improving the wrapping effect and integrity of the top or bottom film. When opened, the soft pressure strip 7 separates from the edge of the film, thereby preventing the edge-sealing pressure plate 5 from causing the film to shift, wrinkle or be damaged when it is reset. The soft pressure strip 7 made of silicone material makes the edge of the film and the edge-sealing effect of the product smoother and tighter, improving the wrapping effect and integrity of the top or bottom film.

[0065] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A top and bottom film forming mechanism, including a support plate, characterized in that: The support plate is connected to a retractable guide shaft, and one end of the guide shaft is connected to a pressure plate for pressing against the top or bottom film. The pressure plate can move away from or closer to the support plate by the telescopic movement of the guide shaft. The support plate is provided with a reset elastic element for continuously providing elastic force to the pressure plate. The support plate is provided with multiple edge-sealing pressure plates distributed around the periphery of the pressure plate, and the support plate is connected with a driving element for simultaneously driving the multiple edge-sealing pressure plates to open or close relative to the periphery of the pressure plate. A soft pressure strip is detachably connected to the inner side of the edge-sealing pressure plate near the pressure plate.

2. The top and bottom film forming mechanism according to claim 1, characterized in that: A gap is formed between the outer surface of the pressure plate and the outer surface of the soft pressure strip.

3. The top and bottom film forming mechanism according to claim 2, characterized in that: The support plate is coaxially connected to the guide shaft via a bushing. The guide shaft can slide along the axial direction of the bushing, and one end of the guide shaft passes through the bushing and is connected to the pressure plate.

4. The top and bottom film forming mechanism according to claim 1, characterized in that: The edge-binding pressure plate is provided with a buckle groove, and the soft pressure strip is detachably buckled to the buckle groove through the insertion part.

5. The top and bottom film forming mechanism according to claim 4, characterized in that: The soft pressure strip has a hollow cavity structure inside.

6. The top and bottom film forming mechanism according to any one of claims 1-5, characterized in that: The soft pressure strip is arranged in an arc shape near the outer surface of the pressure plate.

7. The top and bottom film forming mechanism according to any one of claims 1-5, characterized in that: The soft pressure strip is made of silicone.

8. The top and bottom film forming mechanism according to any one of claims 1-5, characterized in that: The driving component is made of a gripper cylinder. The driving component is mounted on a support plate, and the gripping end of the driving component is connected to the edge-sealing plate through a connector. The edge-sealing plate can be opened or closed by the opening or gripping action of the gripping end of the driving component.

9. The top and bottom film forming mechanism according to claim 8, characterized in that: The pressure plate is configured as a circle, rectangle, or polygon.

10. The top and bottom film forming mechanism according to claim 8, characterized in that: The reset elastic element is made of a spring, and is sleeved with the guide shaft. The reset elastic element is located between the support plate and the pressure plate.

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