Multi-seal-strip vacuum multi-layer linkage heat sealing device

Abstract

The utility model discloses a multi-seal-strip vacuum multi-layer linkage heat sealing device, which relates to the technical field of package heat sealing and comprises a packaging mechanism and a packaging layer, the packaging layer comprises a plurality of layers of drawer structures arranged in parallel, the packaging layer comprises an upper clamping plate assembly and a lower clamping plate assembly, and transmission rhombic pieces are arranged at the ends of an upper execution vertical plate and a lower execution vertical plate. A fixed hinge point is arranged in the middle of the transmission rhombus piece, and the two ends of the transmission rhombus piece are rotationally connected to the upper execution vertical plate and the lower execution vertical plate through crank wheels correspondingly and drive the upper execution vertical plate and the lower execution vertical plate to move in the opposite directions. The distance between a fixed hinge point in the middle of the transmission rhombus piece and the distance between rotary connecting points at the two ends are proportional; and the lower clamping plate assembly comprises a plurality of heating sheets which are arranged in parallel. The vacuum heat sealing technology and the multi-layer linkage heat sealing technology are combined, vacuum heat sealing is achieved, meanwhile, heat sealing efficiency is improved, and heat sealing quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of packaging heat sealing technology, specifically to a multi-seal vacuum multi-layer linkage heat sealing device. Background Technology

[0002] Heat sealing technology is a packaging method widely used in various industries such as food, pharmaceuticals, and cosmetics. It uses heat to bond two or more layers of thermoplastic materials together, creating a seal to protect products from external environmental influences and extend their shelf life. The basic principle of heat sealing is to use heat to soften the plastic material, then apply pressure to force the two layers together tightly, forming a stable seal upon cooling. This process typically involves thermoplastics such as polyethylene (PE), polypropylene (PP), and polyester (PET). Applications include the food, pharmaceutical, and cosmetic industries, as well as others. Commonly used in food packaging, such as snack bags, beverage boxes, and frozen food bags, to maintain freshness and hygiene; in pharmaceutical packaging, such as blister packs and bottle caps, to ensure the safety and efficacy of medicines; and in cosmetics, such as bottle caps and packaging bags, to protect products from contamination. It is also used in packaging for electronic products, stationery, toys, and other products. Traditional heat sealing machines are generally horizontally mounted and can only heat seal one sample at a time, limiting their efficiency. Furthermore, heat sealing typically uses a single heating element. If air leakage occurs along the entire length of the heat seal, the entire sealing structure will fail, making it difficult to control the heat seal quality and integrity. To effectively extend product shelf life and improve product quality, vacuum heat sealing technology has been introduced into packaging heat sealing. This technology removes air from the packaging to extend shelf life, prevent oxidation and moisture problems, and maintain product freshness and quality. Vacuum heat sealing is achieved by evacuating the heat sealing equipment before heat sealing. However, traditional vacuum heat sealing can only seal one sample at a time, resulting in low efficiency. Utility Model Content

[0003] Technical problem to be solved by the utility model

[0004] To address the technical problems of low working efficiency and difficulty in controlling heat sealing quality and seal integrity in existing packaging heat sealing equipment, this utility model provides a multi-seal vacuum multi-layer linkage heat sealing device. It combines vacuum heat sealing technology and multi-layer linkage heat sealing technology, which improves both heat sealing efficiency and heat sealing quality while performing vacuum heat sealing.

[0005] Technical solution

[0006] To solve the above problems, the technical solution provided by this utility model is as follows:

[0007] A multi-seal vacuum multi-layer linkage heat sealing device includes a frame; a box-shaped cavity with an opening and a slide rail, and a sealing mechanism inside the cavity; a sealing door mechanism with a sliding and translational connection to the opening, the sealing door mechanism including a door panel with a sealing structure between the door panel and the opening; and the sealing mechanism including multiple parallel drawer-shaped sealing layers, each sealing layer including an upper clamping plate assembly and a lower clamping plate assembly. The sealing mechanism also includes an upper execution plate and a lower execution plate that are laterally connected to each sealing layer, the upper execution plate being fixedly mounted. The upper clamping plate assembly with each encapsulation layer is attached, and the lower clamping plate assembly with each encapsulation layer is fixedly attached to the lower execution plate. The ends of the upper and lower execution plates are provided with transmission rhomboid members, and the middle of the transmission rhomboid member is provided with a fixed hinge point. The two ends of the transmission rhomboid member are respectively rotatably connected to the upper and lower execution plates through crank wheels and drive the upper and lower execution plates to move in opposite directions. The distance between the fixed hinge point in the middle of the transmission rhomboid member and the rotation connection points at both ends is proportional. The lower clamping plate assembly includes multiple heating plates arranged in parallel.

[0008] This solution combines vacuum heat sealing technology and multi-layer linkage heat sealing technology, enabling the simultaneous vacuum extraction and heat sealing of multiple packaging layers via the upper and lower execution plates and the overall packaging mechanism within a short time, significantly improving work efficiency. Traditional single-layer heat sealing machines can only process one package at a time, while this device can process multiple packages simultaneously, significantly increasing production speed.

[0009] Through a multi-layered, parallel drawer-style sealing layer design, each sealing layer is equipped with precisely controlled upper and lower clamping plate assemblies, ensuring that each package bag is heated evenly and sealed securely. In particular, the multiple heating elements in the lower clamping plate assembly provide a more uniform heat distribution, avoiding localized overheating or uneven cooling. This acts as a safety measure in case some areas of a single heating element are not heated sufficiently; the other heating elements can then be used to correct these areas. Theoretically, increasing the number of heating elements reduces the probability of all heating elements failing to heat in the same location, further improving the quality of the heat seal.

[0010] The device employs a unique transmission diamond-shaped component design, using a crank wheel to achieve opposite movements of the upper and lower execution plates, ensuring tight contact between the upper and lower clamping plate assemblies and thus improving sealing reliability. Furthermore, the sealing structure between the sealing door mechanism and the cavity opening is also meticulously designed to ensure no leakage occurs throughout the entire vacuum extraction process. The distance between the fixed hinge point in the middle of the transmission rhomboid component and the rotating connection points at both ends is proportional. This is because the sample to be heat-sealed is not exactly centered between the upper and lower clamping plate assemblies, and different samples (products) have different heat-sealing opening heights. Furthermore, to save space within the cavity, the sample-carrying pull plate is positioned between the upper and lower clamping plate assemblies. This means the lower clamping plate and the pull plate are almost on the same horizontal plane. If the lower clamping plate extends too far below the pull plate, the heat-sealing opening will be interfered with by the pull plate if it is too low, causing the heat-sealing opening to bend downwards and become non-horizontal, significantly reducing the heat-sealing effect. The upper and lower clamping plate assemblies will move in a closed manner. If the lower clamping plate extends too far above the pull plate, the heat-sealing opening will bend upwards, or the pull plate will occupy too much space to make room for the lower clamping plate's movement, reducing the number of encapsulation layers within the cavity and affecting heat-sealing efficiency. On the other hand, the smaller the volume of the encapsulation mechanism, the more tightly the cavity is wrapped around it, resulting in a smaller cavity and faster vacuuming, indirectly improving heat-sealing efficiency.

[0011] Thanks to its sliding rail and translational connection structure, the sealing door mechanism can be easily opened and closed, facilitating the placement or removal of packaged goods by operators. Furthermore, the multi-layered sealing design allows for individual repair or replacement of a single layer if a problem occurs, without affecting the normal operation of other layers, thus reducing maintenance costs.

[0012] Optionally, a groove and convex strip mating structure is provided between the door panel and the opening, and a rubber pressure strip is provided on the edge of the door panel.

[0013] By incorporating matching grooves and ridges between the door panel and the opening, a tight physical barrier is formed when the door is closed, effectively preventing outside air from entering the cavity. This mechanical sealing method is more reliable than simple planar contact, ensuring the stability of the vacuum environment. The rubber strips at the door panel edges are compressed when the door is closed, further filling the tiny gaps between the grooves and ridges, providing an additional sealing effect. The rubber material has good elasticity and weather resistance, maintaining excellent sealing performance even after repeated opening and closing.

[0014] Optionally, the sealing door mechanism includes a pressure plate, a fixing plate, and a door panel arranged in parallel in sequence. The fixing plate is slidably connected to the frame via a column. The pressure plate and the door panel are connected by a support rod assembly that passes through the fixing plate and extends and retracts. The pressure plate is fixed to the fixing plate. The pressure plate is provided with a telescopic cylinder, and the output end of the telescopic cylinder is connected to the door panel.

[0015] Precise control is achieved by driving the door panel's opening and closing motion using a telescopic cylinder. The telescopic cylinder provides stable and controllable power, ensuring consistent sealing pressure with each door closure, thus improving sealing consistency and reliability. The pressure plate and door panel are telescopically connected via a support rod assembly, allowing for the application of sealing pressure and ensuring a good seal under various conditions. The fixed plate acts as a translation element within the cavity opening, the pressure plate applies sealing pressure, and the door panel is the component that actually fits against the opening for sealing.

[0016] Optionally, a drawer plate is provided between the upper clamping plate assembly and the lower clamping plate assembly, and pulleys and guide rails are provided below the drawer plate, so that the drawer plate can be pulled out horizontally.

[0017] The drawer can be pulled out horizontally, allowing operators to easily place or remove items to be packaged without having to reach into confined spaces, thus improving safety and convenience. The pulleys and guide rails beneath the drawer ensure smoother movement, reducing friction and guaranteeing stability during extraction and retraction, preventing jamming or wobbling.

[0018] Optionally, a pressing plate is provided above the drawer, and the pressing plate is connected to a pressing cylinder.

[0019] The clamping cylinder provides a stable driving force, ensuring that the clamping plate firmly presses the item to be sealed, preventing displacement or deformation during heat sealing and improving the stability and reliability of the sealing process. Through the action of the clamping cylinder, the clamping plate can be evenly distributed across the item on the tray, ensuring that each part receives consistent pressure and avoiding poor sealing caused by uneven local pressure.

[0020] Optionally, the upper clamping plate assembly includes a silicone foam board, which is pressed together with the heating element, and a spring is provided inside the silicone foam board.

[0021] Silicone foam sheets offer excellent insulation and flexibility, enabling even heat transfer and ensuring the heating element's heat is evenly distributed across the packaging material, preventing localized overheating or uneven cooling. The silicone foam sheet and heating element are pressed together, ensuring tight contact and improving heat transfer efficiency, resulting in a more uniform and efficient heating process. Springs within the silicone foam sheet provide cushioning, absorbing some pressure during compression and preventing damage or deformation of the packaging material due to excessive compression. This is particularly suitable for sensitive or fragile items, ensuring they are not damaged during sealing. The flexibility of the silicone foam sheet and the added elasticity of the springs ensure a tight fit between the upper clamping assembly and the packaging material, improving the reliability and integrity of the seal. The flexibility of the silicone foam sheet combined with the spring's cushioning effect allows the upper clamping assembly to better adapt to packaging materials of varying thicknesses and shapes during compression, providing a more uniform pressure distribution.

[0022] Optionally, the distance between the fixed hinge point in the middle of the transmission rhomboid member and the rotating connection points at both ends are not proportional, and the ratio of the distance from the rotating connection point of the lower execution plate to the fixed hinge point to the distance from the rotating connection point of the upper execution plate to the fixed hinge point is in the range of 1:2-3:1.

[0023] The distances between the fixed hinge point in the middle of the transmission rhomboid component and the rotating connection points at both ends are not proportional. This design allows the upper and lower execution plates to achieve non-linear motion trajectories during movement, better adapting to the needs of different encapsulation layers. The ratio of the distance from the rotating connection point to the fixed hinge point of the lower execution plate to the distance from the rotating connection point to the fixed hinge point of the upper execution plate ranges from 1:2 to 3:1. Variations within this range allow for precise control of the movement speed and stroke of the upper and lower clamping plate assemblies, ensuring that the heat-sealing position is the same as or close to the original sample opening, avoiding interference and expanding the space, and achieving optimal heat-sealing results for each encapsulation layer.

[0024] Optionally, the lower clamping plate assembly includes a lower heating block, which has a slot arranged along its length, and the slot engages with the heating element.

[0025] The slots on the lower heating block are designed along the length to ensure that the heating element can be precisely inserted and fixed in the predetermined position, preventing displacement or loosening during use. The engaging design between the slots and the heating element allows the heating element to be firmly fixed to the lower heating block, ensuring stability during operation and improving the uniformity and consistency of heating.

[0026] Optionally, the heating element is connected to power-conducting posts at both ends and is energized.

[0027] The heating element is directly energized at both ends via energizing posts, enabling rapid and uniform heating. This method allows the heating element to quickly reach the set temperature and provides more precise temperature control.

[0028] Optionally, the packaging mechanism includes a support assembly, the upper clamping plate assembly includes an upper adapter plate that is slidably connected to the support assembly via a track, and the lower clamping plate assembly includes a lower adapter plate that is slidably connected to the support assembly via a track. The upper and lower adapter plates are located on the side of the packaging mechanism and are used to guide the clamping plate assembly.

[0029] The upper and lower adapter plates are slidably connected to the support assembly via rails, ensuring that the upper and lower clamping plate assemblies maintain linear movement during operation, preventing offset and wobbling, and improving the accuracy and stability of the movement. Located on the sides of the encapsulation mechanism, the upper and lower adapter plates provide additional lateral guidance, ensuring that the clamping plate assemblies remain vertical and flat during clamping and releasing, preventing tilting and deformation.

[0030] Beneficial effects

[0031] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0032] The technical solution provided by this utility model combines vacuum heat sealing technology and multi-layer linkage heat sealing technology. It can simultaneously complete the vacuum extraction and heat sealing of multiple packaging layers through the upper and lower execution plates and the overall packaging mechanism in a short time, greatly improving work efficiency. Traditional single-layer heat sealing machines can only process one package at a time, while this device can process multiple packages simultaneously, significantly increasing production speed.

[0033] Through a multi-layered, parallel drawer-style sealing layer design, each sealing layer is equipped with precisely controlled upper and lower clamping plate assemblies, ensuring that each package bag is heated evenly and sealed securely. In particular, the multiple heating elements in the lower clamping plate assembly provide a more uniform heat distribution, avoiding localized overheating or uneven cooling. This acts as a safety measure in case some areas of a single heating element are not heated sufficiently; the other heating elements can then be used to correct these areas. Theoretically, increasing the number of heating elements reduces the probability of all heating elements failing to heat in the same location, further improving the quality of the heat seal.

[0034] The device employs a unique transmission diamond-shaped component design, using a crank wheel to achieve opposite movements of the upper and lower execution plates, ensuring tight contact between the upper and lower clamping plate assemblies and thus improving sealing reliability. Furthermore, the sealing structure between the sealing door mechanism and the cavity opening is also meticulously designed to ensure no leakage occurs throughout the entire vacuum extraction process. The distance between the fixed hinge point in the middle of the transmission rhomboid component and the rotating connection points at both ends is proportional. This is because the sample to be heat-sealed is not exactly centered between the upper and lower clamping plate assemblies, and different samples (products) have different heat-sealing opening heights. Furthermore, to save space within the cavity, the sample-carrying pull plate is positioned between the upper and lower clamping plate assemblies. This means the lower clamping plate and the pull plate are almost on the same horizontal plane. If the lower clamping plate extends too far below the pull plate, the heat-sealing opening will be interfered with by the pull plate if it is too low, causing the heat-sealing opening to bend downwards and become non-horizontal, significantly reducing the heat-sealing effect. The upper and lower clamping plate assemblies will move in a closed manner. If the lower clamping plate extends too far above the pull plate, the heat-sealing opening will bend upwards, or the pull plate will occupy too much space to make room for the lower clamping plate's movement, reducing the number of encapsulation layers within the cavity and affecting heat-sealing efficiency. On the other hand, the smaller the volume of the encapsulation mechanism, the more tightly the cavity is wrapped around it, resulting in a smaller cavity and faster vacuuming, indirectly improving heat-sealing efficiency. This device not only solves the problems of low working efficiency, difficulty in controlling heat sealing quality and seal integrity of traditional heat sealing equipment, but also achieves efficient and high-quality vacuum heat sealing through technological innovation, which has high practical value and market prospects. Attached Figure Description

[0035] Figure 1 A schematic diagram of the structure of the multi-seal vacuum multi-layer linkage heat sealing device proposed in the embodiments of this utility model;

[0036] Figure 2 A schematic diagram of the back of the multi-seal vacuum multi-layer linkage heat sealing device proposed in an embodiment of this utility model;

[0037] Figure 3 A side view of the multi-seal vacuum multi-layer linkage heat sealing device proposed in an embodiment of this utility model;

[0038] Figure 4 A schematic diagram of the sealing door mechanism of the multi-seal vacuum multi-layer linkage heat sealing device proposed in an embodiment of this utility model;

[0039] Figure 5 A cross-sectional view of the sealing door mechanism of the multi-seal vacuum multi-layer linkage heat sealing device proposed in an embodiment of this utility model;

[0040] Figure 6A schematic diagram of the packaging mechanism of the multi-seal vacuum multi-layer linkage heat sealing device proposed in an embodiment of this utility model;

[0041] Figure 7 A cross-sectional schematic diagram of the packaging mechanism of the multi-seal vacuum multi-layer linkage heat sealing device proposed in an embodiment of this utility model;

[0042] Figure 8 A partial cross-sectional view of the packaging mechanism of the multi-seal vacuum multi-layer linkage heat sealing device proposed in an embodiment of this utility model;

[0043] Figure 9 A partial schematic diagram of the packaging mechanism of the multi-seal vacuum multi-layer linkage heat sealing device proposed in an embodiment of this utility model;

[0044] Figure 10 A schematic diagram of the actuator cylinder and other components of the multi-seal vacuum multi-layer linkage heat sealing device proposed in the embodiments of this utility model;

[0045] Figure 11 A partial schematic diagram of the transmission rhomboid component of the multi-seal vacuum multi-layer linkage heat sealing device proposed in an embodiment of this utility model;

[0046] Figure 12 An enlarged view of the transmission rhomboid component of the multi-seal vacuum multi-layer linkage heat sealing device proposed in an embodiment of this utility model;

[0047] Figure 13 A partial schematic diagram of the lower heating block of the multi-seal vacuum multi-layer linkage heat sealing device proposed in an embodiment of this utility model;

[0048] 1. Frame; 2. Cavity; 201. Molecular pump interface; 202. Pre-evacuation valve port; 3. Sealing door mechanism; 301. Fixing plate; 302. Pressure plate; 303. Telescopic cylinder; 304. Support rod assembly; 305. Door panel; 306. Pressing plate; 4. Sealing mechanism; 401. Support assembly; 402. Upper clamping plate assembly; 403. Lower clamping plate assembly; 404. Track; 405. Upper actuating plate; 406. Lower actuating plate; 407. Transmission diamond-shaped component; 408. Upper crank wheel ; 409. Lower crank wheel; 4010. Draw plate; 4011. Pull handle; 4012. Silicone foam board; 4013. Lower heating block; 4014. Pressing plate; 4015. Heating element; 4016. Upper adapter plate; 4017. Lower adapter plate; 5. Column; 6. Sliding seat; 7. Slide rail; 8. Slider; 9. Sample; 10. Actuating cylinder; 1001. Actuating connecting rod; 11. Pressing cylinder; 1101. Pressing connecting rod; 1102. Pressing slide; 12. Cylinder fixing bracket. Detailed Implementation

[0049] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0050] Example 1

[0051] Combined with appendix Figure 1 A multi-seal vacuum multi-layer linkage heat sealing device includes a frame 1, which is rectangular. A box-shaped cavity 2 has an opening with a slide rail 7. A sealing mechanism 4 is located inside the cavity 2. The cavity 2 is located below the frame 1. The sealing mechanism 4 is arranged in a drawer-like structure within the cavity 2, and the pull plate 4010 in the sealing mechanism 4 can be pulled out like a drawer. Reinforcing ribs are provided on the exterior of the cavity 2.

[0052] The sealing door mechanism 3 is connected to the opening by a sliding and translational structure. The sealing door mechanism 3 includes a door panel 305, and a sealing structure is provided between the door panel 305 and the opening. The sealing door mechanism 3 is located above the frame 1 and parallel to the opening. After the sealing door mechanism 3 moves down, it can cover the opening to form a sealed cavity 2.

[0053] Combined with appendix Figure 2 The back of the frame 1 is equipped with a molecular pump interface 201 and a pre-evacuation valve port 202. The molecular pump interface 201 connects to the molecular pump. The working principle of the molecular pump is based on molecular dynamics, using high-speed rotating blades or magnetic levitation technology to give gas molecules sufficient kinetic energy, thereby expelling them from the vacuum chamber 2. The pre-evacuation valve port 202 connects to the pre-evacuation valve, a commonly used valve in vacuum systems. It is mainly used to quickly reduce the system pressure during the initial startup of the vacuum pump, so that the main vacuum pump can reach its operating range more quickly. The pre-evacuation valve is usually used in conjunction with the backing pump (such as a rotary vane pump, dry pump, etc.) and the main vacuum pump (such as a turbomolecular pump, diffusion pump, etc.) to improve the overall efficiency and stability of the system.

[0054] Combined with appendix Figure 3-5 The sealing door mechanism 3 includes a pressure plate 302, a fixed plate 301, and a door panel 305 arranged in parallel sequence. The fixed plate 301 is slidably connected to the frame 1 via a column 5. The pressure plate 302 and the door panel 305 are connected by a support rod assembly 304 that passes through the fixed plate 301 and extends and retracts. The pressure plate 302 is fixed to the fixed plate 301. A telescopic cylinder 303 is provided on the pressure plate 302, and the output end of the telescopic cylinder 303 is connected to the door panel 305. A flange linear bearing is fixed to the fixed plate 301 and slidably connected to the column 5 to provide guidance. The flange linear bearing and the column 5 have a symmetrical structure to provide balanced guidance. A slide rail 7 and a slider 8 are also provided at the opening between the fixed plate 301 and the cavity 2. A sensor is provided in the slider 8 to detect the position of the sealing door mechanism 3 and whether the cavity 2 is sealed. A drive mechanism is connected to the top of the sealing door mechanism 3 to provide power. The door panel 305 has a groove and convex strip mating structure between it and the opening, and the edge of the door panel 305 has a rubber pressure strip.

[0055] Combined with appendix Figure 6 The packaging mechanism 4 includes multiple parallel drawer-shaped packaging layers. Each packaging layer includes an upper clamping plate assembly 402 and a lower clamping plate assembly 403. The packaging mechanism 4 also includes an upper execution plate 405 and a lower execution plate 406 that are laterally connected to each packaging layer. The upper clamping plate assembly 402 of each packaging layer is fixedly connected to the upper execution plate 405, and the lower clamping plate assembly 403 of each packaging layer is fixedly connected to the lower execution plate 406. The ends of the upper execution plate 405 and the lower execution plate 406 are provided with transmission rhomboid members 407. The middle part of the transmission rhomboid member 407 is provided with a fixed hinge point. The two ends of the transmission rhomboid member 407 are respectively rotatably connected to the upper execution plate 405 and the lower execution plate 406 through crank wheels, driving the upper execution plate 405 and the lower execution plate 406 to move in opposite directions, forming a lever structure. The support assembly 401 of the packaging mechanism 4 is a multi-layered structure similar to a bookshelf, with each packaging layer located on each layer. In this embodiment, two support assemblies 401 are arranged side by side and connected together. The support assembly 401 has a safety barrier on the front side to block the pull-out plate 4010 of the encapsulation layer. The safety barrier is rotatably set and has induction adapter blocks connected to both ends. Heat sealing will only be started when the safety barrier is in place, that is, when all pull-out plates 4010 are in place, thus improving safety.

[0056] Combined with appendix Figure 7-10 A drawer plate 4010 is provided between the upper clamping plate assembly 402 and the lower clamping plate assembly 403. A pulley and guide rail are provided below the drawer plate 4010, allowing it to be pulled out horizontally. The sample 9 is located on the drawer plate 4010. A clamping plate 4014 is provided above the drawer plate 4010, and a clamping cylinder 11 is connected to the clamping plate 4014. A handle 4011 is extended and fixed to the drawer plate 4010. A silicone foam plate 4012 and a lower heating block 4013 are provided on the right side of the drawer plate 4010. These two are positioned correspondingly to allow for heat sealing. A heating element 4015 is provided on the lower heating block 4013. The encapsulation mechanism 4 includes a support assembly 401, an upper clamping plate assembly 402 including an upper adapter plate 4016, which is slidably connected to the support assembly 401 via a track 404, and a lower clamping plate assembly 403 including a lower adapter plate 4017, which is slidably connected to the support assembly 401 via the track 404. The upper adapter plate 4016 and the lower adapter plate 4017 are located on the side of the encapsulation mechanism 4 and are used to guide the clamping plate assembly. The two ends of the silicone foam board 4012 are fixed to the upper adapter plate 4016, and the two ends of the lower heating block 4013 are fixed to the lower adapter plate 4017.

[0057] Combined with appendix Figure 10The top of the upper execution plate 405 is connected to the execution cylinder 10 via the execution connecting rod 1001. Each layer of the clamping plate 4014 is fixed to the side clamping slide 1102. The top of the clamping slide 1102 is connected to the clamping cylinder 11 via the clamping connecting rod 1101. Both the execution cylinder 10 and the clamping cylinder 11 are fixed to the cylinder fixing bracket 12. This part of the system has a symmetrical structure and is set on both sides of the encapsulation mechanism 4.

[0058] Combined with appendix Figure 11-12 The transmission rhomboid component 407 has a fixed hinge point in the middle. The two ends of the transmission rhomboid component 407 are rotatably connected to the upper execution plate 405 and the lower execution plate 406 respectively through crank wheels, driving the upper execution plate 405 and the lower execution plate 406 to move in opposite directions, forming a lever structure. The distance between the fixed hinge point in the middle and the rotational connection points at both ends is proportional.

[0059] The distances between the fixed hinge point in the middle of the transmission rhomboid component 407 and the rotating connection points at both ends are not proportional. The ratio of the distance from the rotating connection point to the fixed hinge point of the lower execution plate 406 to the distance from the rotating connection point to the fixed hinge point of the upper execution plate 405 is in the range of 1:2-3:1. In this embodiment, the ratio of the distance from the rotating connection point to the fixed hinge point of the lower execution plate 406 to the distance from the rotating connection point to the fixed hinge point of the upper execution plate 405 can be 1:2, 2:1, or 3:1. Figure 12 As shown, the ratio is 2:1.

[0060] Combined with appendix Figure 13 The lower clamping plate assembly 403 includes a lower heating block 4013, which has a slot along its length that engages with a heating element 4015. The lower clamping plate assembly 403 includes multiple heating elements 4015 arranged in parallel. Each heating element 4015 has an energizing post connected to both ends. The energizing post is connected to a controller. In this embodiment, two heating elements 4015 are used.

[0061] Example 2

[0062] Combined with appendix Figure 1-4 The multi-seal vacuum multi-layer linkage heat sealing device of this embodiment can be improved as follows compared with the technical solution of Embodiment 1:

[0063] The two ends of the transmission rhomboid component 407 can be replaced with telescopic rods of adjustable length. This allows the distance between the fixed hinge point in the middle of the transmission rhomboid component 407 and the rotating connection points at both ends to be adjusted to accommodate the heat sealing height of sample 9, thus improving the applicability of the equipment. Simultaneously, the bottom ends of the upper execution plate 405 and the lower execution plate 406 are replaced with horizontally rotating hinge seats. These hinge seats are limited in the length direction of the upper execution plate 405 and the lower execution plate 406, preventing them from moving. This ensures that the upper execution plate 405 and the lower execution plate 406 are still controlled only by the upper crank wheel 408 and the lower crank wheel 409 in the length direction, but the distance ratio can be adjusted.

[0064] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A multi-seal vacuum multi-layer linkage heat sealing device, characterized in that, include frame; The cavity is box-shaped, with an opening and a slide rail, and a sealing mechanism is provided inside the cavity; A sealing door mechanism is provided with a sliding and translational connection to the opening. The sealing door mechanism includes a door panel, and a sealing structure is provided between the door panel and the opening. The packaging mechanism includes a multi-layered, parallel drawer-structured packaging layer. Each packaging layer includes an upper clamping plate assembly and a lower clamping plate assembly. The packaging mechanism also includes an upper execution plate and a lower execution plate that are laterally connected to each packaging layer. The upper clamping plate assembly of each packaging layer is fixedly connected to the upper execution plate, and the lower clamping plate assembly of each packaging layer is fixedly connected to the lower execution plate. The ends of the upper and lower execution plates are provided with transmission diamond-shaped components, and the middle of the transmission diamond-shaped components is provided with a fixed hinge point. The two ends of the transmission diamond-shaped components are respectively rotatably connected to the upper and lower execution plates via crank wheels and drive the upper and lower execution plates to move in opposite directions. The distance between the fixed hinge point in the middle and the rotating connection points at both ends of the transmission diamond-shaped component is proportional; The lower clamping plate assembly includes multiple heating elements arranged in parallel.

2. The multi-seal vacuum multi-layer linkage heat sealing device according to claim 1, characterized in that, The door panel and the opening are provided with a groove and convex strip mating structure, and the edge of the door panel is provided with a rubber pressure strip.

3. The multi-seal vacuum multi-layer linkage heat sealing device according to claim 2, characterized in that, The sealing door mechanism includes a pressure plate, a fixing plate, and a door panel arranged in parallel in sequence. The fixing plate is slidably connected to the frame via a column. The pressure plate and the door panel are connected by a support rod assembly that passes through the fixing plate and extends and retracts. The pressure plate is fixed to the fixing plate. The pressure plate is provided with a telescopic cylinder, and the output end of the telescopic cylinder is connected to the door panel.

4. The multi-seal vacuum multi-layer linkage heat sealing device according to claim 1, characterized in that, A drawer plate is provided between the upper clamping plate assembly and the lower clamping plate assembly. A pulley and a guide rail are provided below the drawer plate, and the drawer plate can be pulled out horizontally.

5. The multi-seal vacuum multi-layer linkage heat sealing device according to claim 4, characterized in that, A pressing plate is provided above the drawer, and the pressing plate is connected to a pressing cylinder.

6. The multi-seal vacuum multi-layer linkage heat sealing device according to claim 1, characterized in that, The upper clamping plate assembly includes a silicone foam board, which is pressed together with the heating element, and a spring is provided inside the silicone foam board.

7. The multi-seal vacuum multi-layer linkage heat sealing device according to claim 1, characterized in that, The distances between the fixed hinge point in the middle of the transmission rhomboid component and the rotating connection points at both ends are not proportional. The ratio of the distance from the rotating connection point of the lower execution plate to the fixed hinge point to the distance from the rotating connection point of the upper execution plate to the fixed hinge point is in the range of 1:2-3:

1.

8. The multi-seal vacuum multi-layer linkage heat sealing device according to claim 1, characterized in that, The lower clamping plate assembly includes a lower heating block, which has a slot along its length, and the slot engages with the heating element.

9. The multi-seal vacuum multi-layer linkage heat sealing device according to claim 8, characterized in that, The heating element is connected to power-conducting posts at both ends and is powered on.

10. The multi-seal vacuum multi-layer linkage heat sealing device according to claim 1, characterized in that, The packaging mechanism includes a support assembly, the upper clamping plate assembly includes an upper adapter plate, the upper adapter plate is slidably connected to the support assembly via a track, the lower clamping plate assembly includes a lower adapter plate, the lower adapter plate is slidably connected to the support assembly via a track, the upper adapter plate and the lower adapter plate are located on the side of the packaging mechanism and are used to guide the clamping plate assembly.

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