Continuous tea bag sealing device

Abstract

The utility model discloses a continuous tea bag sealing device which comprises a tea bag forming assembly, a feeding device and a heat sealing assembly. The tea bag forming assembly comprises a first film belt disc frame, a second film belt disc frame and a guide roller set. A first film belt disc and a second film belt disc are assembled on the first film belt disc frame and the second film belt disc frame. The heat sealing assembly comprises a side edge hot-pressing wheel and a transverse edge hot-pressing cutting device; the two groups of side edge hot pressing wheels are correspondingly arranged on the two sides of the discharging side of the tea bag forming assembly; the transverse edge hot-pressing and cutting device is arranged on the lower portion of the side edge hot-pressing wheel and comprises a transverse hot-sealing edge clamp, and a cutting part is formed in the middle of the hot-sealing edge clamp; the feeding device is used for conducting feeding operation in the hollow tubular containing cavity with the closed bottom face after treatment of the transverse edge hot-pressing and cutting device. The continuous tea filling device can realize continuous tea filling, ensures that the filling amount of each tea bag is uniform and consistent, and greatly improves the production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of sealing equipment technology, and in particular to a continuous sealing device for tea bags. Background Technology

[0002] A tea bag is a portable tea product that wraps brewing ingredients in paper or cloth. It is convenient for people to carry and brew, and can also be stored for a long time. The brewing ingredients filled in a tea bag can be various teas, or a blend of teas with other spices or health ingredients.

[0003] Traditional tea bags typically use woven or non-woven fabrics as packaging materials. However, with continuous technological advancements, composite tea bags with multi-layered structures have also emerged. Most existing tea bag sealing technologies are based on a single-bag structure. After filling the bag with brewing ingredients, each tea bag needs to be individually sewn open or heat-sealed to create the finished product. This sealing method is well-suited for single-layer packaging materials, but it is inefficient and prone to incomplete sealing when sealing multi-layered composite materials. Furthermore, due to the small size of tea bags, traditional sealing methods struggle to achieve precise quantitative filling, making it difficult to control the amount of brewing ingredients inside the tea bag, thus affecting the brewing effect and user experience.

[0004] Therefore, designing a novel tea bag quantitative sealing structure to improve sealing efficiency and airtightness, while reducing material usage and increasing space utilization, is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The technical problem solved by this utility model is to provide a continuous tea bag sealing device, which can be used to solve the defects in the above-mentioned technical background.

[0006] The technical problem solved by this utility model is achieved by the following technical solution:

[0007] A continuous tea bag sealing device includes a frame, a tea bag forming assembly, a feeding device, and a heat sealing assembly formed on the frame.

[0008] The tea bag forming assembly includes a first film reel frame, a second film reel frame, and a guide roller assembly arranged opposite to each other. The first film reel frame and the second film reel frame are rotating frame structures, and the first film reel and the second film reel are respectively assembled in a detachable assembly manner. The front film material of the tea bag is correspondingly wound on the first film reel, and the back film material of the tea bag is correspondingly wound on the second film reel.

[0009] The heat-sealing package assembly includes side hot-pressing rollers and a transverse hot-pressing and cutting device. Two sets of side hot-pressing rollers are correspondingly positioned on the two discharge sides of the tea bag forming assembly, pressing against the outer edges of the stacked front / back film materials to perform continuous hot-pressing operations and form a continuous hollow tubular volume cavity. The transverse hot-pressing and cutting device is located below the side hot-pressing rollers and includes a horizontally positioned heat-sealing clamp, with a cutting section formed in the middle of the heat-sealing clamp.

[0010] The feeding device is used to feed materials into the hollow tubular volume cavity with a closed bottom surface after the horizontal hot-pressing and cutting device has been processed.

[0011] As a further limitation, the detachable assembly method of the first membrane reel on the first membrane reel frame and the second membrane reel on the second membrane reel frame is one or a combination of pin connection assembly, threaded connection assembly, air shaft connection assembly, and chuck assembly.

[0012] As a further limitation, the rotating frame structure of the first and second film reels is designed to rotate synchronously, ensuring the synchronous supply of the front and back film materials, thereby guaranteeing the continuity and consistency of tea bag forming.

[0013] As a further limitation, the guide roller group includes at least one set of tension rollers and at least one set of guide rollers, used to adjust the tension of the film belt during the feeding process to ensure the stability of the film belt and the accuracy of tea bag forming under continuous operation.

[0014] As a further limitation, the front membrane material and the back membrane material are one of non-woven fabric, paper, woven mesh bag, water-permeable membrane material or water-permeable composite membrane material; and the front membrane material and the back membrane material can be the same or different membrane materials.

[0015] As a further limitation, the width of the front film material is the same as that of the back film material; after lamination, the width of the pressing portion of the side hot pressing roller on the outer edges of the front film material and the back film material is set to between 1 / 10 and 1 / 8 of the width of the front film material.

[0016] As a further limitation, the front membrane material has a width greater than that of the back membrane material, and the excess width is used to wrap the back membrane material on both outer sides; after lamination, the width of the pressing portion of the front membrane material and the back membrane material on both outer edges of the side hot pressing roller is set to between 1 / 30 and 1 / 10 of the width of the front membrane material.

[0017] As a further limitation, the front membrane and the back membrane are pre-formed with guide holes on both sides. The guide holes are evenly arranged along the length of the membrane and match the guide holes on the front membrane and the back membrane after being stacked. The side hot press roller is formed with guide teeth that are adapted to the guide holes. The guide teeth are evenly formed on the annular wheel surface of the side hot press roller. When the membrane passes through, the guide teeth can smoothly pass through the guide holes and run stably with the membrane.

[0018] As a further limitation, the feeding device includes a feeding tube and a feeder, the lower part of the feeding tube extending into the hollow tubular volume cavity, and the feeder connected to the upper part of the feeding tube to intermittently feed the feeding tube;

[0019] The feeder is linked to the horizontal hot-pressing and cutting device via a time relay. That is, the feeder performs intermittent feeding operations after the horizontal hot-pressing and cutting device has finished its operation, so as to ensure the quantitative filling of the brewing components in the tea bag.

[0020] Beneficial Effects: This utility model discloses a continuous tea bag sealing device. Through independently assembled first and second film belt reels and a rotating frame structure, the front and back film materials are supplied synchronously, ensuring the continuity and consistency of tea bag forming. Furthermore, the tension and guidance of the guide roller group ensures the tension and stability of the film belt during feeding, thereby improving the accuracy of tea bag forming. The widths of the front and back film materials can be the same or different. Precise pressing by the side hot press rollers ensures a tight seal, avoiding the sealing problems that may occur in traditional sealing techniques. The matching of the guide holes for the front and back film materials with the guide teeth on the side hot press rollers further improves the stability and accuracy of the sealing process. The intermittent feeding of the feeding device and the linkage control of the transverse hot press cutting device ensure quantitative filling of the brewing components inside the tea bag, thereby improving the brewing effect and user experience. Attached Figure Description

[0021] Figure 1 This is an assembly diagram of a preferred embodiment of the present invention.

[0022] Figure 2 for Figure 1 A schematic diagram of the cross-section of the hot press roller on the middle side.

[0023] Figure 3 for Figure 1 A schematic diagram of the hot-press cutting device.

[0024] The components include: 1. First membrane reel frame; 2. First membrane reel; 3. Front membrane material; 4. Premixing device; 5. Feeder; 6. Second membrane reel frame; 7. Second membrane reel; 8. Back membrane material; 9. Tension roller; 10. Side hot press roller; 11. Feeding pipe; 12. Hollow tubular volume cavity; 13. Hot press cutting device; 14. Guide teeth; 15. Fixed clamping block; 16. Hot press panel; 17. Cutting groove; 18. Telescopic cutter; 19. Movable clamping block; 20. Cylinder. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0026] See Figures 1-3 A preferred embodiment of a continuous tea bag sealing device is provided. In this embodiment, the working components of the continuous tea bag sealing device include a tea bag forming assembly, a feeding device, and a heat sealing assembly. The above three components are fixedly assembled on the equipment frame and can be adjusted according to equipment requirements and workflow. Specifically, the tea bag forming assembly is responsible for forming the front and back film materials into the outer layer of the tea bag, the feeding device is responsible for filling tea leaves or other brewing components into the formed semi-formed tea bag, and the heat sealing assembly completes the sealing of the tea bag, ensuring the airtightness and integrity of the tea bag.

[0027] In this embodiment, the tea bag forming assembly includes a first film reel frame 1, a second film reel frame 6, and a guide roller assembly. The first film reel frame 1 and the second film reel frame 6 are arranged opposite each other and have similar structures, both including a frame body. The frame body is connected to a drive motor via a base and can be driven to rotate by the drive motor. The frame body has an assembly part that allows for detachable fixing of the corresponding first film reel 2 and second film reel 7. This detachable fixing assembly method can be one of pin connection, threaded connection, air shaft connection, or chuck assembly in different embodiments. The first film reel 2 mounted on the corresponding first film reel frame 1 and the second film reel 7 mounted on the second film reel frame 6 can be continuously fed by the rotation of the drive motor. During continuous feeding, the first film reel frame 1 and the second film reel frame 6 rotate synchronously, ensuring the synchronous supply of the front and back film materials, thereby guaranteeing the continuity and consistency of tea bag forming.

[0028] In this embodiment, the first membrane reel 2 and the second membrane reel 7 are detachably assembled using a pin connection, which facilitates quick replacement and maintenance of the membrane reels. The membrane material on the first membrane reel 2 is the front membrane material 3 corresponding to the tea bag, while the membrane material on the second membrane reel 7 is the back membrane material 8 corresponding to the tea bag.

[0029] During the tea bag forming process, the front film material 3 and the back film material 8 are positioned by the guide roller group and enter the heat-sealing assembly area in an axially aligned overlapping state, thereby ensuring the accuracy of tea bag forming. The guide roller group includes a set of tension rollers 9 and a set of guide rollers, which adjust the tension of the film belt during feeding to ensure the stability of the film belt and the accuracy of tea bag forming under continuous operation.

[0030] The front membrane material 3 and the back membrane material 8 can be the same or different membrane materials. The membrane material selection can be non-woven fabric, paper, woven mesh bag, permeable membrane material, or a permeable composite membrane material. The lengths of the corresponding front membrane material 3 and back membrane material 8 on the first membrane reel 2 and the second membrane reel 7 should be consistent, while the widths of the front membrane material 3 and back membrane material 8 can be designed to be the same or different depending on the specific requirements of the tea bag design.

[0031] In this embodiment, the widths of the front membrane 3 and the back membrane 8 are the same; during the pressing and forming process after stacking, a lower forming cost is achieved while obtaining a stable outer edge. In this state, the width of the pressing edge is between 1 / 10 and 1 / 8 of the width of the front membrane.

[0032] In another embodiment, the front membrane 3 has a width greater than that of the back membrane 8. During subsequent stacking, the front membrane 3 is aligned with the axis while being folded outwards on both sides to wrap the back membrane 8. In this state, a narrower pressing edge can be obtained while obtaining a stable outer edge. The width of the pressing edge can be controlled to be between 1 / 30 and 1 / 10 of the width of the front membrane.

[0033] In this embodiment, the heat-sealing assembly located on the discharge side of the tea bag forming component is used to form the stacked front film 3 and back film 8 into a tea bag. Specifically, it includes a side hot-pressing roller 10 and a transverse hot-pressing and cutting device 13. The side hot-pressing roller 10 is used to hot-press the outer edges of the stacked front film 3 / back film 8 to form a hollow tubular volume cavity 12 with continuously sealed edges on both sides. The transverse hot-pressing and cutting device 13 is used to perform intermittent operation along the length of the hollow tubular volume cavity 12 to obtain an independent tea bag that is cut to a fixed length after feeding and sealed at both ends.

[0034] The structure of its side hot press roller 10 is as follows Figure 2As shown, the side hot pressing rollers 10 include two sets arranged in pairs. The two sets of side hot pressing rollers 10 are respectively arranged on the outer edges of the front membrane 3 / back membrane 8 after being stacked. The two sets of side hot pressing rollers 10 have hot pressing surfaces formed on the roller surfaces on opposite sides. By heating and holding the hot pressing surfaces and continuously rolling the side hot pressing rollers 10, the front membrane 3 / back membrane 8 after being stacked can be continuously sealed on both sides to obtain the hollow tubular volume cavity 12 structure as described above.

[0035] In this embodiment, to improve the stability of the front film 3 / back film 8 after lamination at the side hot press roller position, guide holes are pre-formed on both sides of the front film 3 / back film 8. The corresponding guide holes are evenly arranged along the length direction of the film, and the guide holes on the front film 3 and back film 8 coincide and match after lamination. In addition, guide teeth 14 adapted to the guide holes and tooth grooves accommodating the guide teeth 14 are formed on the side hot press roller 10. The guide teeth 14 and tooth grooves are respectively formed on the wheel surfaces of two side hot press rollers in the same group and opposite positions, so that when the film passes through, the guide teeth 14 can smoothly pass through the guide holes and run stably with the film.

[0036] The structural style of the transverse hot pressing and cutting device 13 is as follows: Figure 3 As shown, its main body is a horizontally placed heat-sealing clamp, which includes a fixed clamping block 15 and a movable clamping block 19 arranged opposite each other. The movable clamping block 19 is driven by a cylinder 20 on the back side so that the movable clamping block 19 fits against the surface of the fixed clamping block 15. The fixed clamping block 15 and the movable clamping block 19 have matching heat-pressed panels 16 formed on their mating surfaces on opposite sides. The heat-pressed panels 16 have a horizontally penetrating cutting groove 17 and a telescopic cutter 18 that matches the cutting groove 17 formed in the middle position.

[0037] The working process of the horizontal edge hot pressing and cutting device 13 is as follows: when the hollow tubular volume cavity 12 obtained by sealing the edges on both sides through the side hot pressing rollers 10 is continuously fed into the clamping area of ​​the horizontal edge hot pressing and cutting device 13, the movable clamping block 19 can be pushed to the fixed clamping block 15 side by the cylinder 20 and clamped. During the clamping process, the hot pressing and sealing panel 16 is operated to complete the hot sealing. After the hot sealing is completed, the telescopic cutter 18 is started to cut the hot sealed edge from the middle position.

[0038] The feeding device in this embodiment includes a feeding pipe 11 and a feeder 5. The upper part of the feeder 5 is connected to the premixing device 4 to obtain the premixed brewing components from the premixing device 4. The feeder 5 can dispense the corresponding brewing components by weight or volume and then feed them into the feeding pipe 11. The lower part of the feeding pipe 11 is inserted into the hollow tubular volumetric cavity 12 with sealed edges on both sides to perform the feeding operation on the hollow tubular volumetric cavity 12.

[0039] The entire sealing process in this embodiment is as follows: the front film material 3 and the back film material 8 are stacked and fed into the heat-sealing assembly area. After entering the heat-sealing assembly area, the stacked front film material 3 / back film material 8 are first sealed on both sides using the side hot pressing rollers 10, and then enter the horizontal hot pressing and cutting device area for the first working cycle. After the working cycle, the bottom edge sealing and cutting are completed. After the cutting is completed, the feeding pipe 11 delays feeding, and the position of the hollow tubular volume cavity 12 continues to move down until the horizontal hot pressing and cutting device performs the second working cycle. At this time, the top edge sealing and cutting of the lower tea bag and the bottom edge sealing of the upper tea bag are completed. The aforementioned delayed feeding, the downward movement of the hollow tubular volume cavity 12 and the working cycle of the horizontal hot pressing and cutting device are repeated until the equipment stops / shuts down or the film material / brewing components are exhausted.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical content of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A continuous tea bag sealing device, characterized in that, Includes a frame and tea bag forming components, a feeding device, and a heat-sealing package assembly formed on the frame: The tea bag forming assembly includes a first film reel frame, a second film reel frame, and a guide roller assembly arranged opposite to each other. The first film reel frame and the second film reel frame are rotating frame structures, and the first film reel and the second film reel are respectively assembled in a detachable assembly manner. The front film material of the tea bag is correspondingly wound on the first film reel, and the back film material of the tea bag is correspondingly wound on the second film reel. The heat-sealing package assembly includes side hot-pressing rollers and a transverse hot-pressing and cutting device. Two sets of side hot-pressing rollers are correspondingly positioned on the two discharge sides of the tea bag forming assembly, pressing against the outer edges of the stacked front / back film materials to perform continuous hot-pressing operations and form a continuous hollow tubular volume cavity. The transverse hot-pressing and cutting device is located below the side hot-pressing rollers and includes a horizontally positioned heat-sealing clamp, with a cutting section formed in the middle of the heat-sealing clamp. The feeding device is used to feed materials into the hollow tubular volume cavity with a closed bottom surface after the horizontal hot-pressing and cutting device has been processed.

2. The continuous tea bag sealing device according to claim 1, characterized in that, The detachable assembly methods of the first membrane reel on the first membrane reel frame and the second membrane reel on the second membrane reel frame are one or a combination of pin connection assembly, threaded connection assembly, air shaft connection assembly, and chuck assembly.

3. The continuous tea bag sealing device according to claim 1, characterized in that, The rotating frame structure of the first and second membrane tape reels is a synchronous rotating structure.

4. The continuous tea bag sealing device according to claim 1, characterized in that, The front membrane material and the back membrane material are one of non-woven fabric, paper, woven mesh bag, water-permeable membrane material or water-permeable composite membrane material; and the front membrane material and the back membrane material can be the same or different membrane materials.

5. The continuous tea bag sealing device according to claim 1, characterized in that, The width of the front membrane material is the same as that of the back membrane material; after lamination, the width of the pressing portion of the front membrane material and the back membrane material on both sides of the side hot pressing roller is set to between 1 / 10 and 1 / 8 of the width of the front membrane material.

6. The continuous tea bag sealing device according to claim 1, characterized in that, The front membrane material has a width greater than the back membrane material, and the excess width is used to wrap the back membrane material on both outer sides; after lamination, the width of the pressing portion of the front membrane material and the back membrane material on both outer edges of the side hot pressing roller is set to between 1 / 30 and 1 / 10 of the width of the front membrane material.

7. The continuous tea bag sealing device according to claim 1, characterized in that, The front and back membrane materials have pre-formed guide holes on both sides. The guide holes are evenly arranged along the length of the membrane material, and the guide holes on the front and back membrane materials match after being stacked. The side hot press rollers have guide teeth formed to match the guide holes. The guide teeth are evenly formed on the annular wheel surface of the side hot press rollers. When the membrane material passes through, the guide teeth can smoothly pass through the guide holes and run stably with the membrane material.

8. The continuous tea bag sealing device according to claim 1, characterized in that, The feeding device includes a feeding tube and a feeder. The lower part of the feeding tube extends into a hollow tubular volume cavity, and the feeder is connected to the upper part of the feeding tube to intermittently feed the feeding tube.

9. The continuous tea bag sealing device according to claim 8, characterized in that, The feeder is linked to the horizontal hot-pressing and cutting device via a time relay, meaning that the feeder performs intermittent feeding operations after the horizontal hot-pressing and cutting device has completed its operation.

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