Vertical sealing machine for plastic packaging bag processing

Abstract

The utility model discloses a vertical sealing machine for plastic packaging bag processing, including base, the support column is installed at the top of base, the bottom plate is installed at the upside of support column, the bottom plate includes first bottom plate and second bottom plate, the bottom of first bottom plate and second bottom plate all is equipped with support column, the utility model discloses a width adjusting limit component is set up, and the processing demand of adaptation different width plastic packaging bag is limited to plastic packaging bag, effectively avoid the offset of plastic packaging bag when heat -sealing, improve product pass rate, reduce material waste, reduce production cost, through set up cleaning component can remove the residual chippings in time, avoid chippings adhesion heat -conducting strip, reduce the air leakage, the liquid leakage risk of leakage caused by bad sealing, in addition, reduce the local overheating problem of heat -generating pressure strip because of chippings accumulation, make the service life of heat -sealing component key part prolong, reduce equipment maintenance cost, promote production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of plastic packaging equipment technology, specifically a vertical sealing machine for processing plastic packaging bags. Background Technology

[0002] With the booming development of the packaging industry, plastic packaging bags, with their advantages of being lightweight and low-cost, are widely used in many fields such as food, daily necessities, and industrial products. However, the sealing quality of seemingly simple plastic packaging bags directly affects the safety, sealing performance, and service life of products, making it one of the core aspects that cannot be ignored in the packaging production process. Currently, in the field of plastic packaging bag processing, vertical sealing machines are widely used in the sealing and cutting processes of plastic packaging bags.

[0003] Existing vertical sealing machines generally lack effective and flexible limiting devices before heat-sealing plastic packaging bags. Some machines use fixed-specification limiting structures, which can only adapt to plastic packaging bags of a single width, resulting in poor adaptability, cumbersome parts changes, and reduced efficiency. While some limiting structures with adjustable functions are difficult to precisely limit the plastic packaging bags during processing, they are prone to displacement or even cutting misalignment during heat sealing. This not only reduces the product qualification rate but also wastes materials and increases production costs. Heat sealing is a common sealing method for plastic packaging bags, which melts and seals the edges of the plastic film by heating and pressurizing. However, in actual production, cutting debris easily adheres to the bag surface and enters the heat sealing process, forming an isolation layer and sticking to the pressure strip. This leads to a decrease in sealing strength and a poorer sealing performance, affecting product quality and shelf life. Therefore, we need to propose a vertical sealing machine for processing plastic packaging bags. Utility Model Content

[0004] The purpose of this invention is to provide a vertical sealing machine for processing plastic packaging bags, which has the advantages of limiting the width of packaging bags and cleaning debris, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vertical sealing machine for processing plastic packaging bags, comprising a base and a support column, wherein the support column is vertically installed on the top of the base, and a base plate is installed on the top of the support column, the base plate comprising a first base plate and a second base plate, a bracket is installed on the upper side of the first base plate, and a front forming component for forming plastic film into plastic packaging bags is installed on the upper side of the bracket, and a width adjusting limiting component for limiting plastic packaging bags of different widths is installed below the front forming component;

[0006] The top of the first base plate (3) and the second base plate (4) are both equipped with heat sealing components for sealing the edges of plastic packaging bags;

[0007] A cleaning component for cleaning the heat-sealing assembly after edge sealing is installed on one side of the first base plate (3);

[0008] The bottom of the second base plate (4) is equipped with a take-up roller (6) and is located below the heat sealing assembly.

[0009] Preferably, the front-end forming component includes a mold, which is installed on one side of the top of the support, and a film roller is installed on the other side of the top of the support. Power rollers are provided on both sides of the mold, and a collar forming device is fixedly sleeved on the outside of the mold and located above the power rollers.

[0010] Preferably, the front-end forming assembly further includes a first servo electric cylinder mounted on one side of the bracket. A first mounting plate is provided on the side of the bracket near the mold. A first limiting rod is provided through the side of the bracket. One end of the first limiting rod is connected to the working end of the first servo electric cylinder, and the other end of the first limiting rod is connected to the first mounting plate. A first heat insulation strip is provided parallel to one side of the first mounting plate. A first heat conducting strip is installed on one side of the first heat insulation strip. A first heating pressure strip is installed on the side of the first heat conducting strip facing the mold surface.

[0011] Preferably, the width adjustment limiting component includes a mounting bracket, which is mounted on one side of the support and located at the bottom of the mold. A bidirectional threaded rod is rotatably mounted inside the mounting bracket, and a servo motor is mounted outside the mounting bracket. One end of the bidirectional threaded rod extends rotatably to the outside of the mounting bracket and is connected to the power output end of the servo motor. A movable block is symmetrically threaded onto the surface of the bidirectional threaded rod, and a limiting groove is formed on the inner side of the movable block.

[0012] Preferably, the heat sealing assembly includes a fixing plate, which is mounted on the top of the first base plate. A second servo electric cylinder is mounted on the outer side of the fixing plate, and a second mounting plate is mounted on the inner side of the fixing plate.

[0013] Preferably, the heat sealing assembly further includes a second limiting rod, which is disposed through the side of the fixed plate. One end of the second limiting rod is connected to the working end of the second servo electric cylinder, and the other end of the second limiting rod is connected to the second mounting plate. A second heat insulation strip is arranged parallel to one side of the second mounting plate, and a second heat conducting strip is installed on one side of the second heat insulation strip. A second heating pressure strip is slidably inserted into one side of the second heat conducting strip, and a serrated sealing knife is slidably inserted into the inside of the second heat conducting strip and is located above the second heating pressure strip.

[0014] Preferably, the cleaning component includes an electric slide table, which is installed on one side of the first base plate. The power output end of the electric slide table is connected to a connecting rod, and a scraper is provided on the top of the connecting rod. The two sides of the scraper slide in contact with the surface of the second heat-conducting strip.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model, by setting a width adjustment limiting component, adapts to the processing requirements of plastic packaging bags of different widths, limits the plastic packaging bags, effectively prevents the plastic packaging bags from shifting during heat sealing, improves the product qualification rate, reduces material waste, and lowers production costs.

[0017] 2. This utility model can remove residual debris in a timely manner by setting a cleaning component, which can prevent debris from sticking to the heat-conducting strip and reduce the risk of air and liquid leakage caused by poor sealing. In addition, it reduces the problem of local overheating caused by debris accumulation in the heating strip, extends the service life of key components of the heat sealing component, reduces equipment maintenance costs, and improves production efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the front-end molding component of this utility model;

[0020] Figure 3 This is a schematic diagram of the width adjustment and limiting component of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the cleaning component of this utility model;

[0022] Figure 5 This utility model Figure 1 Enlarged view of a portion of area A in the middle;

[0023] Figure 6 This is a schematic diagram of the structure of the movable block of this utility model.

[0024] In the diagram: 1. Base; 2. Support column; 3. First base plate; 4. Second base plate; 5. Bracket; 6. Take-up roller; 7. Mold; 8. Film roll holder; 9. Power roller; 10. Collar forming device; 11. First servo electric cylinder; 12. First mounting plate; 13. First limiting rod; 14. First heat insulation strip; 15. First heat conduction strip; 16. First heating pressure strip; 17. Mounting frame; 18. Bidirectional threaded rod; 19. Servo motor; 20. Moving block; 21. Fixed plate; 22. Second servo electric cylinder; 23. Second mounting plate; 24. Second limiting rod; 25. Second heat insulation strip; 26. Second heat conduction strip; 27. Second heating pressure strip; 28. Serrated sealing knife; 29. ​​Electric slide table; 30. Connecting rod; 31. Scraper; 32. Limiting groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-6 This utility model provides a technical solution: a vertical sealing machine for processing plastic packaging bags, including a base 1 and support columns 2. The support columns 2 are vertically installed on the top of the base 1, and a base plate is installed on the top of the support columns 2. Support columns 2 are installed at the bottom of both the first base plate 3 and the second base plate 4. The symmetrical distribution of the support columns 2 forms a stable support frame, providing reliable support for the upper components. The base plate includes a first base plate 3 and a second base plate 4, and a bracket 5 is installed on the upper side of the first base plate 3.

[0027] The support frame 5 has a front-end forming component installed on its upper side for forming plastic bags from plastic film. This component includes a mold 7, which is mounted on one side of the top of the support frame 5. A film roll holder 8 is installed on the other side of the top of the support frame 5. The film roll holder 8 carries and secures the rolled plastic film, releasing the film material by rotation. Power rollers 9 are installed on both sides of the mold 7, using friction to pull the film forward, controlling the film's conveying speed and tension to ensure continuous processing. A collar forming device 10 is fixedly sleeved on the outside of the mold 7, located above the power rollers 9. The collar forming device 10 folds the flat film into a cylindrical shape through a specific "collar" structure. Both the mold 7 and the collar forming device 10 can be replaced with different models to adapt to different types of plastic bags.

[0028] Meanwhile, the front-end forming assembly also includes a first servo electric cylinder 11 installed on one side of the bracket 5. A first mounting plate 12 is provided on the side of the bracket 5 near the mold 7. A first limiting rod 13 is provided through the side of the bracket 5. One end of the first limiting rod 13 is connected to the working end of the first servo electric cylinder 11, and the other end of the first limiting rod 13 is connected to the first mounting plate 12. A first heat insulation strip 14 is provided parallel to one side of the first mounting plate 12. A first heat conducting strip 15 is installed on one side of the first heat insulation strip 14. A first heating pressure strip 16 is installed on the side of the first heat conducting strip 15 facing the surface of the mold 7.

[0029] It is worth mentioning that when the front forming component of the plastic packaging bag is working, the rolled plastic film is installed on the film roll frame 8, the rolled plastic film is released, and the power rollers 9 on both sides of the mold 7 are driven to pull the film forward by friction. The conveying speed and tension are adjusted by the motor to match the rhythm of the subsequent process and keep the film flat. After being pulled by the power rollers 9, the film is folded into a cylindrical shape and attached to the surface of the mold 7 under the guidance of the curved structure of the collar forming device 10, forming the basic shape of the packaging bag. At the same time, the first servo electric cylinder 11 is started. Under the drive of the first servo electric cylinder 11, the edge of the folded cylindrical film is heat-sealed by the first heating pressure strip 16 to form the back sealing edge of the packaging bag.

[0030] In particular, a width adjustment limiting component for limiting plastic packaging bags of different widths is installed below the front forming component; the width adjustment limiting component includes a mounting frame 17, which is installed on one side of the bracket 5 and located at the bottom of the mold 7. A bidirectional threaded rod 18 is rotatably installed inside the mounting frame 17, and a servo motor 19 is installed outside the mounting frame 17. One end of the bidirectional threaded rod 18 extends rotatably to the outside of the mounting frame 17 and is connected to the power output end of the servo motor 19. A moving block 20 is symmetrically threaded on the surface of the bidirectional threaded rod 18, and a limiting groove 32 is opened on the inner side of the moving block 20.

[0031] Furthermore, by setting a bidirectional threaded rod 18, the surface of which has two sections of threads with opposite directions of rotation, when the bidirectional threaded rod 18 rotates, the two moving blocks 20 that are threadedly engaged with it will move in opposite or opposite straight lines along the rod. The inner side of the vertical part of the moving block 20 is provided with a limiting groove 32 that matches the edge of the packaging bag. The groove width is slightly larger than the thickness of the packaging bag, which allows the equipment to adapt to plastic packaging bags of different widths, prevents displacement, and eliminates the need for manual replacement of the limiting parts, thereby improving production efficiency. The mounting frame 17 has a slot inside that matches the moving block 20. The moving block 20 is slidably connected inside the slot, which can limit the movement trajectory of the moving block 20 and provide stable support for the moving block 20.

[0032] Furthermore, by starting the servo motor 19, the bidirectional threaded rod 18 is driven to rotate, which drives the two moving blocks 20 on both sides to move inward synchronously. The spacing is adjusted to match the width of the plastic packaging bag. After moving into place, the limiting groove 32 on the inner side of the moving block 20 fits with the bag edge after the back is sealed, forming a physical barrier to prevent the plastic packaging bag from shifting laterally during processing.

[0033] Based on this, heat sealing components for sealing the plastic packaging bags are installed on the top of both the first base plate 3 and the second base plate 4; the heat sealing components include a fixing plate 21, which is installed on the top of the first base plate 3, a second servo electric cylinder 22 is installed on the outside of the fixing plate 21, and a second mounting plate 23 is installed on the inside of the fixing plate 21.

[0034] Furthermore, the heat-sealing assembly also includes a second limiting rod 24, which is disposed through the side of the fixing plate 21. One end of the second limiting rod 24 is connected to the working end of the second servo electric cylinder 22, and the other end is connected to the second mounting plate 23. A second heat insulation strip 25 is arranged parallel to one side of the second mounting plate 23, and a second heat-conducting strip 26 is installed on one side of the second heat insulation strip 25. A second heating pressure strip 27 is slidably inserted into one side of the second heat-conducting strip 26. A serrated sealing knife 28 is slidably inserted into the interior of the second heat-conducting strip 26 and is located above the second heating pressure strip 27. The interior of the second heat-conducting strip 26 has slots extending along its length and adapted to the second heating pressure strip 27 and the serrated sealing knife 28.

[0035] More notably, by activating the second servo electric cylinder 22, the extension and retraction of its push rod drives the second limit rod 24 to slide along the fixed plate 21, causing the connected second mounting plate 23 and its components to move synchronously, bringing the heat-sealing assembly closer to the packaging bag to be processed. At this time, the second heat-conducting strip 26 is energized and heats up, the second heating pressure strip 27 quickly conducts heat to the sealing position of the packaging bag, and the second heat insulation strip 25 prevents heat from diffusing to other parts of the assembly, ensuring that the heat energy is concentrated for sealing the edges. When the temperature reaches the set value, the second servo electric cylinder 22 continues to push, the serrated sealing knife 28 and the second heating pressure strip 27 move inward, using heat melting and pressure to fuse the two edges of the packaging bag, while the serrated structure completes the cutting, forming a sealed and neat bag edge. After heat sealing is completed, the second servo electric cylinder 22 retracts, driving the assembly to reset.

[0036] Furthermore, a cleaning assembly for cleaning the heat-sealing components after edge sealing is installed on one side of the first base plate 3. The cleaning assembly includes an electric slide 29, which is mounted on one side of the first base plate 3. A connecting rod 30 is connected to the power output end of the electric slide 29, and a scraper 31 is mounted on the top of the connecting rod 30. The two sides of the scraper 31 slide in contact with the surface of the second heat-conducting strip 26. After the heat-sealing assembly equipment has finished operating, the electric slide 29 is activated, driving the scraper 31 to continuously scrape away residual debris on the surface of the second heat-conducting strip 26, thus cleaning it and preventing localized accumulation of debris that could lead to excessively high local temperatures on the second heat-conducting strip 26, ensuring the heat-sealing effect.

[0037] In addition, a take-up roller 6 is installed at the bottom of the second base plate 4 and is located below the heat sealing assembly. After the plastic packaging bag is heat-sealed, the take-up roller 6 rotates, and one end of the sealed plastic packaging bag is fixed to the surface of the take-up roller 6. As the roller body of the take-up roller 6 rotates, the packaging bag is continuously wound around the take-up roller 6 under the action of friction. When the preset roll diameter or weight is reached, the plastic packaging bag is cut, completing the winding of a roll of packaging material, which is convenient for subsequent storage and transportation.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vertical sealing machine for processing plastic packaging bags, comprising a base (1) and a support column (2), wherein the support column (2) is vertically installed on the top of the base (1), and a base plate is installed on the top of the support column (2), the base plate comprising a first base plate (3) and a second base plate (4), wherein a bracket (5) is installed on the upper side of the first base plate (3), characterized in that: The upper side of the bracket (5) is equipped with a front-end forming component for making plastic film into plastic packaging bags, and a width adjustment limiting component for limiting plastic packaging bags of different widths is installed below the front-end forming component. The top of the first base plate (3) and the second base plate (4) are both equipped with heat sealing components for sealing the edges of plastic packaging bags; A cleaning component for cleaning the heat-sealing assembly after edge sealing is installed on one side of the first base plate (3); The bottom of the second base plate (4) is equipped with a take-up roller (6) and is located below the heat sealing assembly.

2. The vertical sealing machine for processing plastic packaging bags according to claim 1, characterized in that: The front-end forming component includes a mold (7), which is installed on one side of the top of the bracket (5). A film roller (8) is installed on the other side of the top of the bracket (5). Power rollers (9) are provided on both sides of the mold (7). A collar forming device (10) is fixedly sleeved on the outside of the mold (7) and located on the upper side of the power roller (9).

3. The vertical sealing machine for processing plastic packaging bags according to claim 2, characterized in that: The front-end forming assembly also includes a first servo electric cylinder (11) installed on one side of the bracket (5). A first mounting plate (12) is provided on the side of the bracket (5) near the mold (7). A first limiting rod (13) is slidably provided through the side of the bracket (5). One end of the first limiting rod (13) is connected to the working end of the first servo electric cylinder (11), and the other end of the first limiting rod (13) is connected to the first mounting plate (12). A first heat insulation strip (14) is provided parallel to one side of the first mounting plate (12). A first heat conducting strip (15) is installed on one side of the first heat insulation strip (14). A first heating pressure strip (16) is installed on the side of the first heat conducting strip (15) facing the surface of the mold (7).

4. A vertical sealing machine for processing plastic packaging bags according to claim 3, characterized in that: The width adjustment limiting component includes a mounting bracket (17), which is mounted on one side of the bracket (5) and located at the bottom of the mold (7). A bidirectional threaded rod (18) is rotatably mounted inside the mounting bracket (17), and a servo motor (19) is mounted on the outside of the mounting bracket (17). One end of the bidirectional threaded rod (18) extends rotatably to the outside of the mounting bracket (17) and is connected to the power output end of the servo motor (19). A moving block (20) is symmetrically threaded onto the surface of the bidirectional threaded rod (18), and a limiting groove (32) is opened on the inner side of the moving block (20).

5. A vertical sealing machine for processing plastic packaging bags according to claim 1, characterized in that: The heat sealing assembly includes a fixing plate (21) which is mounted on the top of the first base plate (3). A second servo electric cylinder (22) is mounted on the outside of the fixing plate (21), and a second mounting plate (23) is mounted on the inside of the fixing plate (21).

6. A vertical sealing machine for processing plastic packaging bags according to claim 5, characterized in that: The heat sealing assembly also includes a second limiting rod (24), which is disposed through the side of the fixed plate (21). One end of the second limiting rod (24) is connected to the working end of the second servo electric cylinder (22), and the other end of the second limiting rod (24) is connected to the second mounting plate (23). A second heat insulation strip (25) is arranged parallel to one side of the second mounting plate (23). A second heat conducting strip (26) is installed on one side of the second heat insulation strip (25). A second heating pressure strip (27) is slidably inserted into one side of the second heat conducting strip (26). A serrated sealing knife (28) is slidably inserted into the inside of the second heat conducting strip (26) and is located on the upper side of the second heating pressure strip (27).

7. A vertical sealing machine for processing plastic packaging bags according to claim 6, characterized in that: The cleaning assembly includes an electric slide (29) which is mounted on one side of the first base plate (3). The power output end of the electric slide (29) is connected to a connecting rod (30). A scraper (31) is provided on the top of the connecting rod (30). The two sides of the scraper (31) slide against the surface of the second heat-conducting strip (26).

Images