A packaging bag heat sealing device and a packaging machine

Abstract

The utility model provides a kind of packaging bag heat sealing device and packing machine, the packaging bag heat sealing device includes first heat sealing module, second heat sealing module and drive module;The first heat sealing module, second heat sealing module are oppositely arranged;The first heat sealing module, second heat sealing module respectively include heating component, heat conducting component and heat sealing component;The heating component is embedded in the heat conducting component along Y direction;The heat sealing component is arranged on the surface of the temperature uniform region B region of the heat conducting component close to the opposite side heat sealing module side, and the heat conducting component can transfer heat to the heat sealing component;The length of the heat sealing component is adapted to the length of packaging bag seal;The first heat sealing module and / or second heat sealing module can be close to the opposite side heat sealing module along X direction under the drive of the drive module, so that the heat sealing components between the two are pressed to form heat sealing region, so that the sealing of packaging bag can be realized, and the sealing of packaging bag can be improved.

Description

Technical Field

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

[0002] Packaging bags play a vital role in modern industrial production and daily life, with a wide range of applications covering food, chemicals, pharmaceuticals, and many other fields. As the first line of defense between products and the external environment, packaging bags not only protect products from moisture, oxygen, and pollutants but also ensure their safety and freshness. In the pharmaceutical field, for example, well-sealed packaging bags better preserve the active ingredients of drugs, ensuring the safety of medication for patients.

[0003] When packaging products in bags, heat sealing is typically used to ensure airtightness. This involves heating the material at the sealing point until it reaches a viscous state, then applying pressure to seal it. Heat sealing creates a strong and irreversible seal at the bag's opening, effectively preventing leakage of contents or intrusion of external substances. This enhances the overall protective performance of the packaging, improves the reliability of the product packaging, and helps ensure product quality.

[0004] In existing technologies, the heat-sealing module in a heat-sealing device typically consists of a heating rod and a heating plate. The heating rod is embedded in the heating plate. First, the heating rod is energized and heated, and the resulting heat is conducted to the heating plate, bringing it to the heat-sealing temperature. Then, the material at the sealing point is heated by the heating plates on both sides and pressed together to achieve an effective seal on the packaging bag. However, this type of heat-sealing device has a significant problem: when the heating rod is energized and then conducts heat to the heating plate for direct heat sealing and pressing, a low-temperature zone easily forms at the end of the heating plate closest to the heating rod where it is powered on. This results in uneven temperature distribution across the heating plate, which affects the sealing quality and carries the risk of seal failure or burnt seal. For example, when the length of the heat-sealing module is the same as the length of the packaging bag's seal, the area of ​​the packaging bag's seal in contact with the low-temperature zone is prone to failure, affecting the sealing effect. When the low-temperature zone is avoided, i.e., the length of the heat-sealing module is designed to be greater than the length of the packaging bag's seal, for example… Figure 1 As shown, the length of the heat-sealing module is D, the length of the sealed portion of the packaging bag is C, and the low-temperature zone is DC. During continuous heat sealing of the packaging bags, the sealed area of ​​the packaging bag in contact with the low-temperature zone DC will be heated twice (i.e., once during the actual heat sealing of the packaging bag itself, and once during the heat sealing of the previous packaging bag). This can easily cause the seal to be damaged by heat, affecting the appearance quality of the seal. These problems will affect the heat sealing effect of the packaging bag, impacting its airtightness and hindering product quality control. Utility Model Content

[0005] This utility model provides a heat-sealing device for packaging bags, used for heat-sealing and pressing packaging bags, which can improve the sealing effect and facilitate product quality control. The specific solution is as follows:

[0006] A heat sealing device for packaging bags, used for heat sealing and pressing of packaging bags, includes a first heat sealing module, a second heat sealing module and a drive module;

[0007] The first heat sealing module and the second heat sealing module are arranged relative to each other, and the relative displacement direction between the first heat sealing module and the second heat sealing module is defined as the X direction, and the direction perpendicular to the X direction is defined as the Y direction;

[0008] The first heat-sealing module and the second heat-sealing module each include a heating component, a heat-conducting component, and a heat-sealing component. The heating component is embedded in the heat-conducting component along the Y direction, and one end of the heating component along the Y direction is an energized end. After being connected to a power source, the heating component can generate heat and transfer the heat to the heat-conducting component. The low-temperature region of the heat-conducting component near the energized end along the Y direction is region A, and the remaining uniformly heated region is region B. The heat-sealing component is disposed on the surface of region B of the heat-conducting component near the opposite side of the heat-sealing module, and the heat-conducting component can transfer heat to the heat-sealing component. The length of the heat-sealing component is adapted to the length of the packaging bag seal.

[0009] Under the drive of the drive module, the first heat sealing module and / or the second heat sealing module can approach the opposite heat sealing module in the X direction, so that the heat sealing components of the two are pressed together to form a heat sealing area.

[0010] Furthermore, the heat-sealing component is detachably mounted on the heat-conducting component.

[0011] Furthermore, the heat-sealing component is composed of several heat-sealing units of different unit lengths.

[0012] Furthermore, the position of the heat-sealing component on the heat-conducting component can be adjusted along the Y direction.

[0013] Furthermore, the heat-sealing component is a heat-sealing knife made of superconducting thermal material, and the blade of the heat-sealing knife protrudes from the surface of the thermally conductive component.

[0014] Furthermore, the contact surfaces of the blades of the heat-sealing knives in the first heat-sealing module and the second heat-sealing module are adapted smooth curved surfaces, and the two can be pressed together to form a heat-sealing area.

[0015] Furthermore, the first heat-sealing module and the second heat-sealing module are respectively provided with temperature detection components, which can detect the temperature of the heat-sealing components; the heating temperature of the heating component is adjustable.

[0016] Furthermore, the drive module includes a linear drive component, a connecting rod, a connecting plate, a first slide rod, and a second slide rod; the linear drive component can provide a driving force for linear motion; the connecting rod is fixedly inserted through the middle of the connecting plate, and one end of the connecting rod is fixedly connected to the linear drive component, and the other end is fixedly connected to the side of the first heat sealing module away from the second heat sealing module; the first slide rod and the second slide rod are respectively movably inserted through the upper and lower parts of the connecting plate, and the ends of the first slide rod and the second slide rod near the first heat sealing module are both fixedly connected to the first heat sealing module.

[0017] Furthermore, a mounting base is provided on the side of the second heat-sealing module away from the first heat-sealing module, and the second heat-sealing module and the mounting base are connected by a buffer spring.

[0018] The packaging bag heat-sealing device provided by this utility model sets a heat-sealing component adapted to the length of the packaging bag seal on the surface of the temperature uniform region B of the heat-conducting components of the first and second heat-sealing modules. Then, through the heating and power supply of the heating component and the heat transfer of the heat-conducting component, the preheating effect on the heat-sealing component is good and the temperature is uniform. Then, through the drive module, the heat-sealing components of the first and second heat-sealing modules are pressed together to form a heat-sealing area, which can achieve the sealing of the packaging bag. Compared with the prior art, the heat-sealing pressing effect is better, which can reduce the risk of seal failure or seal damage, improve the sealing performance of the packaging bag, and facilitate product quality control.

[0019] In some embodiments, by detachably mounting the heat-sealing component onto the heat-conducting component, when it is necessary to heat-seal and press packaging bags of different sizes, it is easy to achieve this by simply replacing the heat-sealing component of the corresponding size, which can improve the versatility of the packaging bag heat-sealing device and make the operation more convenient.

[0020] In some embodiments, by breaking down the heat-sealing component into several heat-sealing units of different unit lengths, it can be applied to the heat-sealing and pressing of packaging bags of more different sizes and specifications, further improving the versatility of the packaging bag heat-sealing device, making it more convenient and flexible, and also reducing the production cost of the heat-sealing component.

[0021] In some embodiments, by setting the position of the heat-sealing component on the heat-conducting component to be adjustable along the Y direction, the position of the heat-sealing component on the heat-conducting component can be adjusted according to the position of the packaging bag seal during processing, so that the heat-sealing component is aligned with the packaging bag seal, which not only improves versatility but also enhances the heat-sealing effect.

[0022] In some embodiments, the heat-sealing component employs a heat-sealing blade made of a superconducting thermal material, which enables efficient heat conduction and temperature control, making the heat-sealing process more stable and reliable. Simultaneously, the blade of the heat-sealing blade protrudes from the surface of the thermally conductive component, allowing it to preferentially contact the packaging bag and apply localized high pressure during the pressing process, causing the heat-sealing area to quickly reach a molten state, thereby improving sealing strength and sealing performance. This structure not only improves heat-sealing efficiency but also reduces the overall heating area, lowering energy consumption.

[0023] In some embodiments, by setting the contact surfaces of the blades of the heat-sealing knives of the first heat-sealing module and the second heat-sealing module to a smooth curved surface, it is beneficial to improve the uniformity of pressure and temperature distribution during the heat-sealing pressing process, improve the sealing quality, reduce damage to the packaging film, and extend the life of the heat-sealing knife.

[0024] In some embodiments, by setting temperature detection components that can detect the temperature of the heat-sealing component on the first heat-sealing module and the second heat-sealing module respectively, the temperature information of the heat-sealing areas on both sides can be obtained in real time, which is conducive to timely detection of temperature abnormalities (such as uneven heating, local overcooling / overheating), thereby enabling comprehensive and accurate monitoring of the heat-sealing temperature, which helps to improve the heat-sealing quality and enhance the stability of the equipment.

[0025] In some embodiments, by setting the heating temperature of the heating component to be adjustable, the heating parameters can be dynamically adjusted according to the type and thickness of the packaging material used, making it applicable to heat sealing and pressing of packaging bags of different materials and thicknesses, thus improving the versatility and flexibility of the packaging bag heat sealing device. At the same time, by precisely controlling the heating temperature, problems such as film scorching and melting due to excessively high temperature, or poor sealing and air leakage due to excessively low temperature, can be avoided, thus improving the consistency and stability of heat sealing quality.

[0026] In some embodiments, the driving module includes a linear driving component, a connecting rod, a connecting plate, a first slide rod, and a second slide rod. Through the cooperation between the linear driving component, the connecting rod, the connecting plate, the first slide rod, and the second slide rod, the first heat sealing module can be stably and reliably driven to perform linear motion, ensuring that the first heat sealing module always moves in a predetermined direction. This improves the alignment accuracy during the heat sealing process, avoids uneven sealing or leaks caused by misalignment, and enhances the stability and reliability of the packaging bag heat sealing device, thereby improving the consistency of the heat sealing quality.

[0027] In some embodiments, by providing a buffer spring between the second heat-sealing module and the mounting base for connection, when the first heat-sealing module approaches and presses against the second heat-sealing module in the X direction, the force can be buffered, avoiding damage to the heat-sealing components due to excessive collision rigidity, thereby improving the stability and reliability of the packaging bag heat-sealing device and increasing the lifespan of the packaging bag heat-sealing device.

[0028] This utility model also provides a packaging machine that can automatically realize product feeding, packaging, and heat sealing, which is highly efficient and reliable, and can improve the sealing effect, thus facilitating product quality control. The specific solution is as follows:

[0029] A packaging machine includes a film conveying device, a forming device, a feeding device, and a packaging bag heat sealing device as described in any one of the above.

[0030] The film conveying device can be used to convey packaging films;

[0031] The forming device can be used to transform a flat packaging film into a preset three-dimensional shape;

[0032] The feeding device can be used to store products to be packaged and quantitatively fill them into packaging bags;

[0033] The packaging bag heat sealing device can be used for heat sealing and pressing of packaging bags.

[0034] The packaging machine provided by this utility model, through the cooperation of the film conveying device, forming device, feeding device and packaging bag heat sealing device, can realize the feeding, packaging and heat sealing of products in a fully automated manner, which is more efficient and reliable. Moreover, compared with the prior art, the heat sealing effect is better, which can reduce the risk of sealing failure or sealing damage, improve the sealing performance of packaging bags, and facilitate product quality control. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the usage status of a heat-sealing device for packaging bags in the prior art.

[0036] Figure 2 This is a schematic diagram of the packaging bag heat sealing device provided in this embodiment.

[0037] Figure 3 Schematic diagram of the first and second heat-sealing modules provided in this embodiment Figure 1 (face).

[0038] Figure 4 Schematic diagram of the first and second heat-sealing modules provided in this embodiment Figure 2 (Looking down).

[0039] Figure 5This is a schematic diagram of the usage status of the heat sealing device for packaging bags provided in this embodiment. Figure 1 .

[0040] Figure 6 This is a schematic diagram of the usage status of the heat sealing device for packaging bags provided in this embodiment. Figure 2 .

[0041] Figure 7 This is a schematic diagram of the packaging machine structure provided in this embodiment.

[0042] The reference numerals in the attached figures are as follows: 1 is the first heat-sealing module, 2 is the second heat-sealing module, 21 is the heating component, 22 is the heat-conducting plate, 23 is the heat-sealing plate, 3 is the driving module, 31 is the linear driving component, 32 is the connecting rod, 33 is the connecting plate, 34 is the first sliding rod, 35 is the second sliding rod, 4 is the temperature detection component, 5 is the mounting base, 6 is the buffer spring, 7 is the film conveying device, 8 is the forming device, 9 is the feeding device, 101 is the longitudinal sealing device, and 102 is the transverse sealing device. Detailed Implementation

[0043] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. For ease of explanation, the terms "front," "rear," "positive," "negative," "left," "right," "top," "bottom," "upper," "lower," "inner," "outer," and "inner" in this utility model indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model or limitations on the actual orientation of the product or device during production, use, sales, etc. In addition, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Furthermore, in the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," and "composition," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] This utility model provides a heat-sealing device for packaging bags, which can be used for heat sealing and pressing of packaging bags. It can reduce the risk of seal failure or seal damage, improve the sealing effect, and facilitate product quality control.

[0045] like Figure 2The diagram shown is a structural schematic of the packaging bag heat-sealing device. Specifically, the packaging bag heat-sealing device includes a first heat-sealing module 1, a second heat-sealing module 2, and a drive module 3, wherein:

[0046] like Figure 2 , Figure 3 , Figure 4 As shown, the first heat sealing module 1 and the second heat sealing module 2 are arranged opposite each other, that is, the first heat sealing module 1 and the second heat sealing module 2 are arranged face to face and correspond to each other;

[0047] In this patent, the relative displacement direction between the first heat-sealing module 1 and the second heat-sealing module 2 is defined (the relative displacement direction refers to the direction in which the first heat-sealing module 1 and the second heat-sealing module 2 move closer or further away from each other, i.e.) Figure 2 The horizontal direction in the diagram is the X direction, and the direction perpendicular to the X direction is the Y direction (i.e., the horizontal direction). Figure 2 (the vertical direction in the middle)

[0048] Specifically, such as Figure 2 , Figure 3 , Figure 4As shown, the first heat-sealing module 1 and the second heat-sealing module 2 each include a heating component 21, a heat-conducting component 22, and a heat-sealing component 23. The heating component 21 is an electrically heated component. In this embodiment, the heating component 21 is a heating rod; however, it can also be a heating plate, heating block, or other heating component, which is not limited here. The heat-conducting component 22 is a heat-transferring component that can transfer heat from the heating component 21 to the heat-sealing component 23. In this embodiment, the heat-conducting component 22 is a heat-conducting plate; however, it can also be a heat-conducting strip, heat-conducting block, or other heat-conducting material, which is not limited here. The heat-sealing component 23 is a plate-shaped or strip-shaped component, and the length of the heat-sealing component 23 is adapted to the length of the packaging bag seal. It can be used to apply heat and pressure to the packaging film during the heat-sealing process, causing it to melt and seal. The heating component 21 is embedded in the heat-conducting component 22 along the Y direction. Preferably, as shown in this embodiment, the... The length of the heating component 21 is the same as the length of the heat-conducting component 22; one end of the heating component 21 along the Y direction is the energized end (in this embodiment, the energized end is located at the lower end of the heating component 21). When the energized end is connected to the power supply, the heating component 21 can generate heat and transfer the heat to the heat-conducting component 22; the low-temperature region of the heat-conducting component 22 near the energized end along the Y direction is designated as region A, and the remaining temperature-uniform region is designated as region B; the heat-sealing component 23 is disposed on the surface of region B of the heat-conducting component 22 near the opposite heat-sealing module (i.e., the heat-sealing component 23 of the first heat-sealing module 1 is disposed on the surface of region B of the heat-conducting component 22 near the second heat-sealing module 2, while the heat-sealing component 23 of the second heat-sealing module 2 is disposed on the surface of region B of the heat-conducting component 22 near the first heat-sealing module 1), and the heat-conducting component 22 can transfer heat to the heat-sealing component 23.

[0049] Under the drive of the drive module 3, the first heat-sealing module 1 and / or the second heat-sealing module 2 can move closer to the opposite heat-sealing module in the X direction, so that the heat-sealing components 23 of the two modules are pressed together to form a heat-sealing area. For example, the first heat-sealing module 1 can operate alone, that is, the first heat-sealing module 1 moves closer to the second heat-sealing module 2 under the drive of the drive module 3, so that the heat-sealing components 23 of the two modules are pressed together to form a heat-sealing area; or the second heat-sealing module 2 can operate alone, that is, the second heat-sealing module 2 moves closer to the first heat-sealing module 1 under the drive of the drive module 3, so that the heat-sealing components 23 of the two modules are pressed together to form a heat-sealing area; or the first heat-sealing module 1 and the second heat-sealing module 2 can operate simultaneously, that is, the first heat-sealing module 1 and the second heat-sealing module 2 move closer to each other under the drive of the drive module 3, so that the heat-sealing components 23 of the two modules are pressed together to form a heat-sealing area. There is no limitation here.

[0050] In use, the heating element 21 is first energized and heated. Heat is transferred from the heating element 21, then through the heat-conducting element 22 to the heat-sealing element 23. After the first heat-sealing module 1 and the second heat-sealing module 2 have both been preheated, the driving module 3 causes the heat-sealing elements 23 of the first heat-sealing module 1 and the second heat-sealing module 2 to be pressed together to form a heat-sealing area. Figure 5 As shown, only the heat-sealing component 23 contacts the sealing area of ​​the packaging bag, and the packaging bag can be sealed by the heat-sealing and pressing of the heat-sealing component 23.

[0051] The packaging bag heat-sealing device with the above structure sets a heat-sealing component 23 adapted to the length of the packaging bag seal on the surface of the temperature uniform region B of the heat-conducting component 22 of the first heat-sealing module 1 and the second heat-sealing module 2. Then, through the heating and power supply of the heating component 21 and the heat transfer of the heat-conducting component 22, the preheating effect on the heat-sealing component 23 is good and the temperature is uniform. Then, through the drive module 3, the heat-sealing components 23 of the first heat-sealing module 1 and the second heat-sealing module 2 are pressed together to form a heat-sealing area, which can achieve the sealing of the packaging bag. Compared with the prior art, the heat-sealing pressing effect is better, which can reduce the risk of seal failure or seal damage, improve the sealing performance of the packaging bag, and facilitate product quality control.

[0052] In some embodiments, the heat-sealing component 23 is detachably mounted on the heat-conducting component 22. For example, in this embodiment, a groove for mounting the heat-sealing component 23 is provided on the heat-conducting component 22, and a protrusion at the root of the heat-sealing component 23 is provided that matches the shape of the groove. In use, the heat-sealing component 23 is inserted into the groove from the opening at the upper end of the heat-conducting component 22 to form a fixed position, thereby achieving detachable mounting. Of course, other detachable mounting methods can be implemented, and no limitation is made here.

[0053] The packaging bag heat-sealing device with the above structure, by detachably mounting the heat-sealing component 23 onto the heat-conducting component 22, allows for easy heat sealing of packaging bags of different sizes by simply replacing the heat-sealing component 23 with the corresponding size; for example... Figure 5 , Figure 6 As shown, the original heat-sealing component 23 of length C is suitable for heat sealing of packaging bags of length C. When it is necessary to change to heat sealing of packaging bags of length F, it is only necessary to remove the original heat-sealing component 23 of length C from the heat-conducting component 22 and install the heat-sealing component 23 of length F. This can improve the versatility of the packaging bag heat-sealing device and make the operation more convenient.

[0054] In some embodiments, the heat-sealing component 23 can be broken down into several heat-sealing units of different lengths. For example, several heat-sealing units with lengths of 1mm, 2mm, 5mm, 10mm, 20mm, 50mm, and 100mm can be provided. When the length of the packaging bag to be heat-sealed is 370mm, three 100mm + one 50mm + one 20mm heat-sealing units can be selected to form the heat-sealing component 23 with a total length of 370mm.

[0055] The packaging bag heat sealing device with the above structure breaks down the heat sealing component 23 into several heat sealing units of different unit lengths, which can be applied to the heat sealing and pressing of packaging bags of more different sizes and specifications, further improving the versatility of the packaging bag heat sealing device, making it more convenient and flexible, and also reducing the production cost of the heat sealing component 23.

[0056] In some embodiments, the position of the heat-sealing component 23 on the heat-conducting component 22 can be adjusted along the Y direction; for example, in this embodiment, such as Figure 2 , Figure 3 As shown, the heat-sealing component 23 can be adjusted upwards or downwards on the heat-conducting component 22, depending on the actual processing needs.

[0057] The packaging bag heat sealing device with the above structure, by setting the position of the heat sealing component 23 on the heat conducting component 22 to be adjustable along the Y direction, can adjust the position of the heat sealing component 23 on the heat conducting component 22 according to the position of the packaging bag seal during processing, so that the heat sealing component 23 is aligned with the packaging bag seal, which not only has better versatility, but also improves the heat sealing and pressing effect.

[0058] In some embodiments, the heat-sealing component 23 is a heat-sealing knife made of a superconducting thermal material, and the blade of the heat-sealing knife protrudes from the surface of the heat-conducting component 22.

[0059] The packaging bag heat-sealing device with the above structure uses a heat-sealing blade made of superconducting thermal material as the heat-sealing component 23, which enables efficient heat conduction and temperature control, making the heat-sealing process more stable and reliable. Simultaneously, the blade of the heat-sealing blade protrudes from the surface of the heat-conducting component 22, allowing it to preferentially contact the packaging bag and apply localized high pressure during the pressing process, causing the heat-sealing area to quickly reach a molten state, thereby improving sealing strength and sealing performance. This structure not only improves heat-sealing efficiency but also reduces the overall heating area, lowering energy consumption.

[0060] In some embodiments, preferably, the contact surfaces of the blades of the heat-sealing knives of the first heat-sealing module 1 and the second heat-sealing module 2 are adapted smooth curved surfaces, and the two can be pressed together to form a heat-sealing area; of course, in addition, the contact surfaces of the blades of the heat-sealing knives of the first heat-sealing module 1 and the second heat-sealing module 2 can also be planes, and the two can be pressed together to form a heat-sealing area through planar contact; or the contact surfaces of the blades of the heat-sealing knives of the first heat-sealing module 1 and the second heat-sealing module 2 can also be serrated surfaces, and the two can be fitted together to form a heat-sealing area.

[0061] The packaging bag heat sealing device with the above structure, by setting the contact surfaces of the heat sealing blades of the first heat sealing module 1 and the second heat sealing module 2 to a smooth curved surface, helps to improve the uniformity of pressure and temperature distribution during the heat sealing process, improves the sealing quality, reduces damage to the packaging film, and extends the life of the heat sealing blade.

[0062] In some embodiments, such as Figure 2 , Figure 3 As shown, the first heat-sealing module 1 and the second heat-sealing module 2 are respectively provided with temperature detection components 4, which can detect the temperature of the heat-sealing component 23.

[0063] The packaging bag heat sealing device with the above structure can obtain the temperature information of the heat sealing area on both sides in real time by setting temperature detection components 4 on the first heat sealing module 1 and the second heat sealing module 2 respectively. This is conducive to timely detection of temperature abnormalities (such as uneven heating, local overcooling / overheating), thereby realizing comprehensive and accurate monitoring of heat sealing temperature, which helps to improve heat sealing quality and enhance equipment stability.

[0064] In some embodiments, the heating temperature of the heating element 21 can be adjusted according to actual processing needs.

[0065] The packaging bag heat sealing device with the above structure, by setting the heating temperature of the heating component 21 to be adjustable, can dynamically adjust the heating parameters according to the type and thickness of the packaging material used. It can be applied to heat sealing and pressing of packaging bags of different materials and thicknesses, improving the versatility and flexibility of the packaging bag heat sealing device. At the same time, by precisely controlling the heating temperature, it can avoid problems such as film scorching and melting due to excessive temperature, or poor sealing and air leakage due to excessively low temperature, thus improving the consistency and stability of heat sealing quality.

[0066] In some embodiments, such as Figure 2As shown, the drive module 3 includes a linear drive component 31, a connecting rod 32, a connecting plate 33, a first slide rod 34, and a second slide rod 35. The linear drive component 31 can be a drive device such as a pneumatic cylinder, hydraulic cylinder, or oil cylinder, which can provide driving force for linear motion. The connecting rod 32 is fixedly inserted through the middle of the connecting plate 33, and one end of the connecting rod 32 is fixedly connected to the linear drive component 31, while the other end is fixedly connected to the side of the first heat sealing module 1 away from the second heat sealing module 2. This allows the linear motion generated by the linear drive component 31 to be transmitted to the connecting plate 33 and the first heat sealing module 1, thereby driving the first heat sealing module 1 to move. The first slide rod 34 and the second slide rod 35 are respectively movably inserted through the upper and lower parts of the connecting plate 33 via sleeves, and the ends of the first slide rod 34 and the second slide rod 35 near the first heat sealing module 1 are fixedly connected to the first heat sealing module 1. This provides additional support and guidance for the first heat sealing module 1, ensuring that it moves smoothly along a predetermined path.

[0067] The packaging bag heat sealing device with the above structure, through the cooperation between the linear drive component 31, connecting rod 32, connecting plate 33, first slide rod 34 and second slide rod 35, can stably and reliably drive the first heat sealing module 1 to perform linear motion, ensuring that the first heat sealing module 1 always moves in a predetermined direction. This can improve the alignment accuracy during the heat sealing process, avoid uneven sealing or leakage caused by misalignment, improve the stability and reliability of the packaging bag heat sealing device, and enhance the consistency of the heat sealing quality of the packaging bag heat sealing device.

[0068] In some embodiments, such as Figure 2 As shown, the second heat-sealing module 2 is provided with a mounting base 5 on the side away from the first heat-sealing module 1, and the second heat-sealing module 2 and the mounting base 5 are connected by a buffer spring 6.

[0069] The packaging bag heat sealing device with the above structure uses a buffer spring 6 to connect the second heat sealing module 2 and the mounting base 5. When the first heat sealing module 1 approaches and presses against the second heat sealing module 2 in the X direction, it can buffer the force and avoid damage to the heat sealing component 23 due to excessive collision rigidity. This can improve the stability and reliability of the packaging bag heat sealing device and increase its service life.

[0070] like Figure 7 As shown, this utility model also provides a packaging machine that can automatically realize product feeding, packaging, and heat sealing. Specifically, the packaging machine includes a film conveying device 7, a forming device 8, a feeding device 9, and a packaging bag heat sealing device as described in any one of the above-mentioned components, wherein:

[0071] The film conveying device 7 is responsible for continuously conveying the packaging film, so that the packaging film can be stably transported and pass through each station at a constant speed and tension.

[0072] The forming device 8 can transform a flat packaging film into a preset three-dimensional shape, such as a tube or a cylinder, to facilitate subsequent filling and sealing operations.

[0073] The feeding device 9 can be used to store products to be packaged and quantitatively fill them into packaging bags;

[0074] The packaging bag heat sealing device can be used for heat sealing and pressing of packaging bags, that is, sealing the packaging film by heating and pressurizing to form a closed packaging bag, so as to ensure that the product inside the packaging can be effectively protected and prevent the entry of external air, moisture or other contaminants. In this embodiment, preferably, the packaging bag heat sealing device includes both a longitudinal sealing device 101 for longitudinal heat sealing and a transverse sealing device 102 for transverse heat sealing and pressing, making the packaging machine more applicable and flexible. Of course, in practical applications, the packaging bag heat sealing device may also include only the longitudinal sealing device 101 or only the transverse sealing device 102, which is not limited here.

[0075] The packaging machine with the above structure, through the cooperation between the film conveying device 7, the forming device 8, the feeding device 9 and the packaging bag heat sealing device, can realize the feeding, packaging and heat sealing of products in a fully automated manner, which is more efficient and reliable. Moreover, compared with the existing technology, the heat sealing effect is better, which can reduce the risk of sealing failure or sealing damage, improve the sealing performance of the packaging bag, and facilitate product quality control.

[0076] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of implementation of the present utility model. All equivalent changes made in accordance with the shape, structure and principle of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A packaging bag heat sealing device for heat seal press bonding of a packaging bag, characterized by, It includes a first heat-sealing module (1), a second heat-sealing module (2), and a drive module (3); The first heat sealing module (1) and the second heat sealing module (2) are arranged relative to each other. The relative displacement direction between the first heat sealing module (1) and the second heat sealing module (2) is defined as the X direction, and the direction perpendicular to the X direction is defined as the Y direction. The first heat-sealing module (1) and the second heat-sealing module (2) respectively include a heating component (21), a heat-conducting component (22) and a heat-sealing component (23); the heating component (21) is embedded in the heat-conducting component (22) along the Y direction, and one end of the heating component (21) along the Y direction is an energized end. After being connected to a power source, the heating component (21) can generate heat and transfer the heat to the heat-conducting component (22); the low-temperature region of the heat-conducting component (22) near the energized end along the Y direction is region A, and the remaining uniform temperature region is region B; the heat-sealing component (23) is disposed on the surface of region B of the heat-conducting component (22) near the opposite side of the heat-sealing module, and the heat-conducting component (22) can transfer heat to the heat-sealing component (23); the length of the heat-sealing component (23) is adapted to the length of the packaging bag seal; The first heat sealing module (1) and / or the second heat sealing module (2) can approach the opposite heat sealing module along the X direction under the drive of the drive module (3), so that the heat sealing components (23) of the two are pressed together to form a heat sealing area.

2. The packaging bag heat sealing apparatus according to claim 1, wherein The heat-sealing component (23) is detachably mounted on the heat-conducting component (22).

3. The packaging bag heat sealing apparatus according to claim 2, wherein The heat-sealing component (23) is composed of several heat-sealing units of different unit lengths.

4. The heat-sealing device for packaging bags according to claim 1, characterized in that, The position of the heat-sealing component (23) on the heat-conducting component (22) can be adjusted along the Y direction.

5. The packaging bag heat sealing apparatus according to claim 1, wherein The heat-sealing component (23) is a heat-sealing knife made of superconducting thermal material, and the blade of the heat-sealing knife protrudes from the surface of the heat-conducting component (22).

6. The packaging bag heat sealing apparatus according to claim 5, wherein The contact surfaces of the blades of the heat sealing knives in the first heat sealing module (1) and the second heat sealing module (2) are smooth curved surfaces that can be pressed together to form a heat sealing area.

7. The packaging bag heat sealing apparatus according to claim 1, wherein Temperature detection components (4) are respectively provided on the first heat sealing module (1) and the second heat sealing module (2). The temperature detection components (4) can detect the temperature of the heat sealing component (23); the heating temperature of the heating component (21) is adjustable.

8. The apparatus of any one of claims 1-7, wherein, The drive module (3) includes a linear drive component (31), a connecting rod (32), a connecting plate (33), a first slide rod (34), and a second slide rod (35); the linear drive component (31) can provide a driving force for linear motion; the connecting rod (32) is fixedly inserted through the middle of the connecting plate (33), and one end of the connecting rod (32) is fixedly connected to the linear drive component (31), and the other end is fixedly connected to the side of the first heat sealing module (1) away from the second heat sealing module (2); the first slide rod (34) and the second slide rod (35) are respectively movably inserted through the upper and lower parts of the connecting plate (33), and the ends of the first slide rod (34) and the second slide rod (35) near the first heat sealing module (1) are both fixedly connected to the first heat sealing module (1).

9. The packaging bag heat sealing apparatus according to claim 8, wherein The second heat sealing module (2) is provided with a mounting base (5) on the side away from the first heat sealing module (1), and the second heat sealing module (2) and the mounting base (5) are connected by a buffer spring (6).

10. A packaging machine characterized in that, It includes a film conveying device (7), a forming device (8), a feeding device (9), and a packaging bag heat sealing device as described in any one of claims 1-9 above; The film conveying device (7) can be used to convey packaging film; The forming device (8) can be used to transform a flat packaging film into a preset three-dimensional shape; The feeding device (9) can be used to store products to be packaged and quantitatively fill them into packaging bags; The packaging bag heat sealing device can be used for heat sealing and pressing of packaging bags.

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