A packaging apparatus with self-sealing zipper tape loading

Abstract

The utility model discloses a kind of packaging equipment with self-sealing zipper tape feeding, it is related to packaging equipment technical field, and the efficient, high-quality online automatic feeding of self-sealing zipper tape can be realized. Upper heat sealing device and lower heat sealing device are all including circulating rotation's rolling tape, heating part, guide mechanism and merging alignment mechanism, heating part is set to the inside of rolling tape to heat rolling tape, guide mechanism is oppositely set with the outside of rolling tape, so that rolling tape outside and guide mechanism between formation are used for heat sealing passage for common passage of adhesive tape and packaging bag blank tape. Through zipper tape feeding branch guide device, the automatic, continuous feeding and splitting of self-sealing zipper tape are realized, dynamic heat sealing passage is formed using the rolling tape of circulating rotation cooperation built-in heating part and guide mechanism, so that packaging bag blank tape and adhesive tape can be completed heat sealing in continuous progress, improve production speed;Meanwhile, rolling contact heating pressure is more uniform, improves the initial sealing quality of zipper and product yield.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment technology, and in particular to a packaging equipment with a self-sealing zipper and feeding mechanism. Background Technology

[0002] In the existing packaging industry, self-sealing zipper bags are widely used due to their convenience of resealing. These bags are typically manufactured by heat-sealing two interlocking self-sealing strips (i.e., self-sealing zippers) onto the inside of the bag opening during the bag-making process. Currently, there are two main processes for implementing self-sealing zipper feeding. One is offline operation, where the zipper and single-layer packaging film are heat-sealed on separate equipment, and then the laminated film roll is transported to the packaging machine for subsequent bag making and packaging. This method has a long production process, requires transfer and storage, occupies a large area, and carries the risk of film roll contamination or damage, resulting in low overall production efficiency. The other is online operation, which attempts to integrate zipper feeding into the packaging production line.

[0003] However, existing online feeding equipment still has many shortcomings. First, when guiding the two adhesive strips to the upper and lower layers of packaging blanks for heat sealing, traditional heat sealing devices are mostly static heating blocks. The packaging blanks and adhesive strips are briefly heated under pressure at the heat sealing station, which not only limits the production speed of the equipment, but also easily leads to poor adhesion of the adhesive strips, bubbles or wrinkles due to uneven heating or unstable pressure, affecting the sealing performance of the zipper and the yield rate.

[0004] Secondly, after merging and aligning the upper and lower layers of packaging blanks that have already undergone single-sided zipper heat sealing, and filling them with the product, the sides of the packaging bag need to be pressed and sealed. Traditional sealing devices typically have a fixed pressing module during heat pressing, which generates a momentary pulling force on the continuously moving packaging blank. This pulling force, especially at the connection points between adjacent packaging bag units, can stress the pre-sealed zipper structure in that area, potentially causing minor peeling or damage at the adhesive joint between the zipper and the bag body. After subsequent cutting into individual packaging bags, these damaged points become weak points in the seal, affecting the long-term sealing reliability of the packaging bag. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art by providing a packaging device with a self-sealing zipper tape feeding system. This system enables efficient and high-quality online automatic feeding of the self-sealing zipper tape, and ensures the adhesion of the zipper to the packaging bag and the overall sealing quality of the final packaging bag.

[0006] The technical solution of this utility model includes a product conveying device, a zipper tape feeding and guiding device, an upper heat sealing device, and a lower heat sealing device. The zipper tape feeding and guiding device is located upstream of the upper and lower heat sealing devices to provide and guide the self-sealing zipper blank tape to split into upper and lower adhesive strips. Both the upper and lower heat sealing devices include a rotating rolling belt, a heating element, a guiding mechanism, and a merging and aligning mechanism. The heating element is located inside the rolling belt to heat it. The guiding mechanism is located opposite to the outer side of the rolling belt, forming a heat sealing channel between the outer side of the rolling belt and the guiding mechanism for the adhesive strips and the packaging bag blank tape to pass through. The merging and aligning mechanism is located downstream of the heat sealing channel to guide and merge the upper and lower packaging bag blank tapes after the upper and lower adhesive strips have been heat-sealed. The product conveying device is located at the merging and aligning mechanism to feed the product to be packaged into the merging mechanism when the upper and lower packaging bag blank tapes are merged.

[0007] By adopting the above technical solution, the automatic and continuous feeding and splitting of self-sealing zipper tapes is achieved through a zipper tape feeding and guiding device, replacing the traditional offline operation. This integrates the zipper lamination and bag making and packaging process, improving production efficiency and reducing intermediate steps and space occupation. A dynamic heat-sealing channel is formed by a circulating rotating belt in conjunction with built-in heating elements and guiding mechanisms, allowing the packaging bag blank tape and adhesive strip to be heat-sealed during continuous movement. This overcomes the pause problem caused by traditional static heating blocks and improves production speed. At the same time, the rolling contact heating pressure is more uniform, effectively avoiding defects such as poor adhesive strip adhesion, bubbles, and wrinkles caused by uneven heating or unstable pressure, thus improving the initial sealing quality of the zipper and the product yield. The product conveying device is integrated into the merging and alignment mechanism, enabling the product to be filled at the same time as the bag blank is merged, ensuring the continuity and automation of the packaging process.

[0008] In one possible design, a flattening heat-sealing device is also included. The flattening heat-sealing device is located downstream of the merging and alignment mechanism. It includes at least one flattening edge-sealing module and a following drive mechanism. The following drive mechanism is connected to the flattening edge-sealing module to drive the flattening edge-sealing module to move synchronously along the conveying direction of the packaging bag blank. The flattening edge-sealing module includes an upper pressing block and a lower pressing block that can be closed and separated from each other. During the synchronous movement of the flattening edge-sealing module, the upper pressing block and the lower pressing block of the flattening edge-sealing module close together to heat-press the tape position between adjacent packaging bag units on the packaging bag blank.

[0009] By adopting the above design and setting a following drive mechanism, the flattening and sealing module is driven to move synchronously with the packaging bag blank during hot pressing. This eliminates the instantaneous pulling force generated by the traditional fixed sealing mechanism on the continuously moving blank, effectively protecting the heat-sealed zipper structure and the blank itself. It prevents minor peeling or damage at the zipper bonding point caused by stress concentration, thus improving the long-term sealing reliability of the final packaging bag. The hot pressing and sealing process during synchronous following movement makes the pressing process smoother and allows more time, thereby ensuring the sealing strength and consistency of the sealing positions between adjacent packaging bag units, especially the bag opening with zippers, further improving the overall packaging quality.

[0010] In one possible design, a heating unit is provided inside the upper and / or lower pressure blocks.

[0011] The above design provides the required temperature during the sealing process, allowing the plastic material at the sealing edge of the packaging bag blank to fully melt and bond, resulting in a sealing effect with higher strength and better sealing performance.

[0012] In one possible design, the follow-drive mechanism is a crank-connecting rod mechanism, a cam mechanism, or a linear motor drive mechanism.

[0013] With the above design, these mechanisms can precisely control the movement of the flattening and sealing module, making it move more stably and accurately along the conveying direction of the packaging bag blank. Different mechanisms can be selected according to actual production needs and equipment characteristics, providing diversified implementation methods to meet the requirements of motion control of the flattening and heat sealing device in different production scenarios, and ensuring the reliability and stability of the flattening and sealing process.

[0014] In one possible design, the zipper tape feeding and guiding device includes an inlet roller, a reversing roller, and two separating rollers for separating the integral parts of the self-sealing zipper blank tape. The self-sealing zipper blank tape is introduced from the inlet roller, and after the reversing roller adjusts its direction, it is separated into an upper adhesive strip and a lower adhesive strip, which are then led to the corresponding separating rollers.

[0015] With the above design, the inlet roller provides initial guidance, the reversing roller adjusts the direction, and the separating roller separates the integral parts, ensuring that the self-sealing zipper blank belt is reliably split into two rubber strips. This provides accurate material input for the subsequent heat sealing operation of the upper and lower heat sealing devices, and improves the stability and reliability of the self-sealing zipper belt feeding process.

[0016] In one possible design, the guiding mechanism includes a guide plate, a plurality of pulleys rotatably mounted on the guide plate, and a guide roller; the guide plate has a long groove on the side facing the pulleys, each pulley has an annular wheel groove, and the guide roller has an annular roller groove; the long groove, the wheel groove, and the roller groove are connected and interlocked to form a guide channel for guiding and positioning the rubber strip protrusion.

[0017] The above design utilizes a guide channel formed by the continuous grooves on the guide plate, the pulley surface grooves, and the guide roller surface grooves to accurately accommodate and guide the protruding parts on the rubber strip. This achieves accurate positioning and smooth conveying of the rubber strip within the heat-sealing channel, preventing it from deviating or twisting and improving heat-sealing quality. Furthermore, the use of rotatable pulleys to form rolling contact with the rubber strip reduces frictional resistance and wear on the rubber strip surface during conveying, protecting the rubber strip structure and ensuring stable conveying.

[0018] In one possible design, the merging and alignment mechanism includes two return rollers and a pair of relatively rotating guide rollers; the two return rollers are respectively positioned downstream of the upper heat sealing device and the lower heat sealing device, for receiving and guiding the upper and lower packaging bag blanks that have been heat-sealed with single-sided adhesive strips; the output end of the product conveying device is located between the inlet sides of the two return rollers, for feeding the product between the upper and lower packaging bag blanks; the pair of guide rollers are positioned downstream of the return rollers, with their inlet sides receiving the packaging bag blanks guided by the return rollers, and merging and aligning the upper and lower packaging bag blanks.

[0019] By adopting the above design, two return rollers are set to guide the upper and lower packaging bag blanks respectively, and a clear intervention space is provided for the product conveying device between the two inlet sides. This ensures that the product to be packaged can be accurately and timely fed in before the upper and lower bag blanks are merged, without interfering with the path of the bag blanks, and achieves precise coordination of bag filling and bag closing actions. Furthermore, a pair of relatively rotating guide rollers are used to merge and align the upper and lower bag blanks after the product is fed in, ensuring the regular shape of the final formed packaging bag and the accuracy of the sealing edge position, creating favorable conditions for the downstream flattening and sealing process.

[0020] In one possible design, two sets of zipper tape feeding and guiding devices, upper heat sealing devices, and lower heat sealing devices are arranged in parallel. Each set of zipper tape feeding and guiding devices, upper heat sealing devices, and lower heat sealing devices processes one self-sealing zipper tape, so that the two self-sealing zipper tapes are heat-sealed onto the same packaging bag blank tape.

[0021] With the above design, the equipment can simultaneously heat-seal two self-sealing zippers on the same packaging bag blank at the same time, so as to meet the requirement of two zipper belts on the same packaging bag. Setting two self-sealing zippers on the same packaging bag can form double-sealed or double-chamber packaging. In this way, the production range is expanded, and two processing lines are integrated on a single machine, which helps to improve production efficiency and enhance the functionality and practicality of packaging bags. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a partial structural schematic diagram of the present invention;

[0024] Figure 3 This is a schematic diagram of part of the internal structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the zipper tape feeding and guiding device of this utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the heat sealing device of this utility model;

[0027] Figure 6 This is a partial structural schematic diagram of the heat sealing device of this utility model;

[0028] Figure 7 This is a schematic diagram of the guiding mechanism of this utility model;

[0029] Figure 8 This is a schematic diagram of the flattening heat sealing device of this utility model. Figure 1 ;

[0030] Figure 9 This is a schematic diagram of the flattening heat sealing device of this utility model. Figure 2 ;

[0031] The components include: 1. Zipper belt feeding and guiding device; 11. Introducing roller; 12. Directional roller; 13. Separating roller; 2. Upper heat sealing device; 21. Rolling belt; 22. Heating element; 23. Guiding mechanism; 231. Guide plate; 232. Pulley; 233. Guide roller; 234. Guide channel; 2341. Plate surface long groove; 2342. Wheel surface groove; 2343. Roller surface groove; 24. Merging and alignment mechanism; 241. Return roller; 242. Guide roller; 25. Heat sealing channel; 3. Lower heat sealing device; 4. Flattening heat sealing device; 41. Flattening edge sealing module; 411. Upper pressure block; 412. Lower pressure block; 42. Following drive mechanism; 51. Zipper blank belt; 52. Packaging bag blank belt. Detailed Implementation

[0032] like Figures 1 to 9 The packaging equipment shown is a self-sealing zipper tape feeding device. This equipment mainly comprises a product conveying device, a zipper tape feeding and guiding device 1, an upper heat sealing device 2, a lower heat sealing device 3, and a flattening heat sealing device 4. Through the coordinated operation of each part, efficient and high-quality online automatic feeding of the self-sealing zipper tape is achieved, ensuring the strong adhesion of the zipper to the packaging bag and the overall sealing quality of the final packaging bag.

[0033] like Figure 4As shown, the zipper tape feeding and guiding device 1 is located upstream of the upper heat-sealing device 2 and the lower heat-sealing device 3. The zipper tape feeding and guiding device 1 includes an inlet roller 11, a reversing roller 12, and two separating rollers 13. The self-sealing zipper blank tape 51 is composed of two interlocking rubber strips joined together at the top. The rolled self-sealing zipper blank tape 51 is drawn out from the inlet roller 11 and its direction of travel and tension are adjusted by the reversing roller 12. Subsequently, the self-sealing zipper blank tape 51 is guided to the two separating rollers 13 rotating in opposite directions. Through this process, the joined blank tape is smoothly and continuously separated into independent upper and lower rubber strips, which are then conveyed to the corresponding upper heat-sealing device 2 and lower heat-sealing device 3, respectively.

[0034] like Figures 2 to 7 As shown, the upper heat-sealing device 2 and the lower heat-sealing device 3 have the same structure and are arranged symmetrically. Each heat-sealing device includes a rotating rolling belt 21, a built-in heating element 22, and a cooperating guide mechanism 23. The rolling belt 21 is preferably a high-temperature resistant metal belt, which is driven by a drive component to rotate continuously. The heating element 22 is fixedly installed on the inner side of the rolling belt 21 to uniformly and continuously heat it when the rolling belt 21 rotates. The heating element 22 generates heat after being energized, heating the rolling belt 21 to a suitable temperature, which is determined according to the material of the self-sealing zipper tape and the packaging bag blank tape 52, and is generally between 150-200℃. The heating element 22 can be connected by an elastic mechanism to elastically press it onto the rolling belt 21.

[0035] like Figures 5 to 6 As shown, the guide mechanism 23 and the outer working surface of the rolling belt 21 are positioned opposite each other, forming a narrow heat-sealing channel 25 between them. One side of the rolling belt 21 can be adjusted in position via a lifting mechanism, thereby adjusting the height of the heat-sealing channel 25 to accommodate packaging bag blanks 52 of different thicknesses or to adjust the tightness of the fit. The packaging bag blank 52 (upper or lower layer) and the corresponding adhesive strip are introduced into this heat-sealing channel 25. Within this channel, the heated rolling belt 21 applies pressure and heat to the passing packaging bag blank 52 and adhesive strip, causing the back of the adhesive strip to heat-melt and firmly adhere to the inner edge of the packaging bag blank 52, completing the heat sealing of the single-sided zipper.

[0036] like Figure 7As shown, the guiding mechanism 23 specifically includes a guide plate 231, multiple pulleys 232 rotatably mounted on the guide plate 231, and a guide roller 233. To accurately guide the rubber strip with its raised structure, a long groove 2341 is formed on the side of the guide plate 231 facing the pulleys 232. Each pulley 232 has an annular groove 2342, and the guide roller 233 has an annular groove 2343. These grooves are interconnected, forming a continuous guide channel 234. The raised engagement portion of the rubber strip is constrained to slide within this guide channel 234, thereby ensuring precise positioning and smooth transport of the rubber strip during the heat sealing process. Simultaneously, the rolling contact between the pulleys 232 and the rubber strip effectively reduces frictional resistance.

[0037] like Figure 3 As shown, the merging and alignment mechanism 24 is located downstream of the upper and lower heat-sealing devices 3. The merging and alignment mechanism 24 includes two return rollers 241 and a pair of relatively rotating guide rollers 242. The two return rollers 241 are respectively positioned downstream of the upper heat-sealing device 2 and the lower heat-sealing device 3, serving to receive and guide the upper and lower packaging bag blanks 52 that have undergone single-sided adhesive strip heat sealing. The output end of the product conveying device is located between the inlet sides of the two return rollers 241. The product conveying device can be, for example, one or more combinations of a conveyor belt, a robotic arm, or a pushing mechanism. When the product conveying device transports the product to be packaged to a designated position, the upper and lower packaging bag blanks 52 are guided to that position by the return rollers 241, and the product is accurately fed between the upper and lower packaging bag blanks 52. The pair of guide rollers 242 are located downstream of the return rollers 241, and their inlet sides receive the packaging bag blanks 52 guided by the return rollers 241. Guide rollers 242, through speed control and relative position setting, merge and align the upper and lower layers of packaging bag blanks 52, ensuring neat edges on both layers and preparing for subsequent flattening and sealing operations. Thus, the merging and alignment mechanism 24 completes the heat-sealing of the upper and lower layers of packaging bag blanks 52 with upper and lower adhesive strips, which are then received and guided by the corresponding return rollers 241. The output end of the product conveying device is located between the inlet sides of the two return rollers 241. When the upper and lower layers of packaging bag blanks 52 are guided by the return rollers 241 to a point where they are about to converge, the product conveying device activates, precisely delivering the product to be packaged between the two layers of bag blanks. Subsequently, the upper and lower layers of bag blanks carrying the product are conveyed to a pair of downstream guide rollers 242. These guide rollers 242, through relative rotation, clamp and smoothly merge and align the two layers of bag blanks, forming a continuous bag containing the product.

[0038] like Figures 8 to 9As shown, the flattening heat-sealing device 4 is located downstream of the merging and aligning mechanism 24. This device includes at least one flattening and sealing module 41 and a following drive mechanism 42. The flattening and sealing module 41 includes an upper pressing block 411 and a lower pressing block 412 that can be closed and separated from each other. The upper pressing block 411 and / or the lower pressing block 412 are embedded with heating units, such as miniature heating wires or heating plates. The heating units can heat the temperature of the upper and lower pressing blocks 412 to a temperature range suitable for hot pressing, generally between 180-220°C. The following drive mechanism 42 is connected to the flattening and sealing module 41 and can be a crank-connecting rod mechanism, a cam mechanism, or a linear motor drive mechanism. Taking a linear motor drive mechanism as an example, it includes a motor and a lead screw pair. The lead screw pair converts the circular motion output by the motor into linear motion, thereby driving the flattening and sealing module 41 to move synchronously along the conveying direction of the packaging bag blank belt 52. When heat sealing is required, the follow-drive mechanism 42 first drives the entire flattening and sealing module 41 to move synchronously along the conveying direction of the packaging bag blank belt 52. During this brief synchronous movement, the upper pressure block 411 and the lower pressure block 412 quickly close due to cylinder drive, heat-sealing the preset positions between adjacent packaging bag units on the packaging bag blank belt 52. After sealing is completed, the pressure blocks separate, and the module resets under the drive of the follow-drive mechanism 42, ready for the next work cycle. This dynamic following pressing method heat-presses the tape position between adjacent packaging bag units on the packaging bag blank belt 52, allowing the tape to better bond with the packaging bag blank belt 52, avoiding the pulling damage caused by traditional fixed pressing to the continuously moving bag blank, protecting the heat-sealed zipper structure, and ensuring the sealing integrity of the final packaging bag.

[0039] To further improve production efficiency or achieve specific packaging functions, this packaging equipment adopts a parallel dual-station design. Specifically, two sets of zipper tape feeding and guiding devices 1, upper heat sealing devices 2, and lower heat sealing devices 3 are provided. The first set of zipper tape feeding and guiding devices 1 and the second set of zipper tape feeding and guiding devices 1 are arranged side by side. They respectively introduce self-sealing zipper blank tape 51 from their respective feed rolls and independently split it into upper and lower adhesive strips. Subsequently, the split adhesive strips are guided to the corresponding first and second sets of upper and lower heat sealing devices 3. The structure and working principle of these heat sealing devices are the same as those in the aforementioned embodiment. They all heat seal the adhesive strips onto the continuously fed packaging bag blank tape 52 through the heat sealing channel 25 formed by the circulating rolling belt 21 and the guiding mechanism 23. In addition, these two sets of heat sealing devices can share certain mechanisms, such as the merging alignment mechanism 24, guide plate 231, guide roller 233, or drive components that drive the rolling belt 21. Next, the combined blank strips enter the flattening and sealing device. The flattening and sealing module 41 needs to be configured or supplemented accordingly so that it can heat-press the corresponding zipper strips. Finally, the packaging bag blank strip 52 will form two parallel zipper strips. These two zipper strips can both be set at the opening of the packaging bag to form a double seal, or they can form two product chambers in the packaging bag to form the final double-chamber packaging bag.

[0040] The packaging equipment also includes a sealing and edge-sealing device and a cutting device. The sealing and edge-sealing device is used to seal the corresponding positions of the packaging bag, usually the four rectangular sides of the packaging bag, to form a completely closed packaging bag. The cutting device cuts the sealed packaging bag blank 52 into individual packaging bag units. These are mentioned in the prior art and will not be repeated here.

[0041] In summary, the self-sealing zipper blank 51 is separated into upper and lower adhesive strips by the zipper bag feeding and guiding mechanism, and then enters the heat sealing channels 25 of the upper and lower heat sealing devices 3 respectively, where it is heated together with the packaging bag blank 52 to complete the heat sealing of the adhesive strips. Subsequently, the product conveying device sends the product to be packaged between the upper and lower packaging bag blank 52, which are merged and aligned by the merging and alignment mechanism 24. Finally, the flattening and sealing module 41 of the flattening and sealing device, driven by the following drive mechanism 42, heat-presses the adhesive strip positions between adjacent packaging bag units of the packaging bag blank 52, completing the entire packaging process.

Claims

1. A packaging device with a self-sealing zipper and feeding mechanism, comprising a product conveying device, characterized in that: It also includes a zipper belt feeding and guiding device (1), an upper heat sealing device (2), and a lower heat sealing device (3). The zipper tape feeding and guiding device (1) is located upstream of the upper heat sealing device (2) and the lower heat sealing device (3) to provide and guide the self-sealing zipper blank tape (51) to be split into upper and lower adhesive strips; The upper heat sealing device (2) and the lower heat sealing device (3) both include a rotating rolling belt (21), a heating element (22), a guiding mechanism (23), and a merging and aligning mechanism (24). The heating element (22) is located inside the rolling belt (21) to heat the rolling belt (21). The guiding mechanism (23) is located opposite to the outer side of the rolling belt (21), so that a heat sealing channel (25) is formed between the outer side of the rolling belt (21) and the guiding mechanism (23) for the adhesive strip and the packaging bag blank belt (52) to pass through together. The merging and aligning mechanism (24) is located downstream of the heat sealing channel (25) to guide and merge the upper and lower packaging bag blank belts (52) after the upper and lower adhesive strips have been heat sealed respectively. The product conveying device is located at the merging and aligning mechanism (24) to send the product to be packaged into the space when the upper and lower packaging bag blank belts (52) are merged.

2. The packaging equipment with self-sealing zipper and feeding mechanism according to claim 1, characterized in that: It also includes a flattening heat sealing device (4), which is located downstream of the merging and alignment mechanism (24). It includes at least one flattening sealing module (41) and a following drive mechanism (42). The following drive mechanism (42) is connected to the flattening sealing module (41) to drive the flattening sealing module (41) to move synchronously along the conveying direction of the packaging bag blank belt (52). The flattening sealing module (41) includes an upper pressing block (411) and a lower pressing block (412) that can be closed and separated from each other. During the process of driving the flattening sealing module (41) to move synchronously, the upper pressing block (411) and the lower pressing block (412) of the flattening sealing module (41) close together to heat press the tape position between adjacent packaging bag units on the packaging bag blank belt (52).

3. The packaging equipment with self-sealing zipper and feeding mechanism according to claim 2, characterized in that: Heating units are provided inside the upper pressure block (411) and / or the lower pressure block (412).

4. The packaging equipment with self-sealing zipper and feeding mechanism according to claim 2, characterized in that: The following drive mechanism (42) is a crank-connecting rod mechanism, a cam mechanism, or a linear motor drive mechanism.

5. The packaging equipment with self-sealing zipper and feeding mechanism according to claim 1 or 2, characterized in that: The zipper tape feeding and guiding device (1) includes an inlet roller (11), a reversing roller (12), and two separating rollers (13) for separating the integral part of the self-sealing zipper blank tape (51). The self-sealing zipper blank tape (51) is introduced from the inlet roller (11), and after the reversing roller (12) adjusts its direction, it is separated into an upper adhesive strip and a lower adhesive strip, and is respectively led to the corresponding separating rollers (13).

6. The packaging equipment with self-sealing zipper and feeding mechanism according to claim 1 or 2, characterized in that: The guiding mechanism (23) includes a guide plate (231), a plurality of pulleys (232) rotatably mounted on the guide plate (231), and a guide roller (233). The guide plate (231) has a plate surface groove (2341) on the side facing the pulleys (232), each pulley (232) has an annular wheel surface groove (2342), and the guide roller (233) has an annular roller surface groove (2343). The plate surface groove (2341), the wheel surface grooves (2342) of each pulley (232), and the roller surface grooves (2343) are connected and joined together to form a guide channel (234) for guiding and positioning the rubber strip protrusion.

7. The packaging equipment with self-sealing zipper and feeding mechanism according to claim 1 or 2, characterized in that: The merging and alignment mechanism (24) includes two return rollers (241) and a pair of relatively rotating guide rollers (242); the two return rollers (241) are respectively arranged downstream of the upper heat sealing device (2) and the lower heat sealing device (3) to receive and guide the upper and lower packaging bag blanks (52) that have been heat-sealed with single-sided adhesive strips; the output end of the product conveying device is located between the inlet sides of the two return rollers (241) to send the product between the upper and lower packaging bag blanks (52); the pair of guide rollers (242) are arranged downstream of the return rollers (241), and their inlet sides receive the packaging bag blanks (52) guided by the return rollers (241) and merge and align the upper and lower packaging bag blanks (52).

8. The packaging equipment with self-sealing zipper and feeding mechanism according to claim 1 or 2, characterized in that: The zipper tape feeding and guiding device (1), upper heat sealing device (2), and lower heat sealing device (3) are all arranged in two sets in parallel. Each set of zipper tape feeding and guiding device (1), upper heat sealing device (2), and lower heat sealing device (3) processes one self-sealing zipper blank tape (51) to heat seal the two self-sealing zipper tapes onto the same packaging bag blank tape (52).

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