Thermal shrinkage plastic packaging device

Abstract

The utility model provides a thermal shrinkage plastic packaging device which comprises a shell, a hot air assembly, an air duct assembly and a supporting table. The hot air assembly and the air duct assembly are arranged in the shell. The hot air assembly is used for providing hot air. A hot air channel is formed in the air duct assembly, the air duct assembly is further provided with two ports communicated with the hot air channel, the air duct assembly is connected to the air outlet part of the hot air assembly through one port, hot air blown out by the hot air assembly enters the hot air channel, and the other port of the air duct assembly extends out of the shell and is used for outputting hot air in the hot air channel. The supporting table is located outside the shell and comprises a rotating part which is rotationally arranged, and the rotating part is used for supporting a product to be plastically packaged and located on a propagation path of hot air output by the air duct assembly. The thermal shrinkage plastic packaging device is small in size, small in occupied space and wide in application range.

Description

Technical Field

[0001] This application relates to heat shrink technology, and more particularly to a heat shrink sealing device. Background Technology

[0002] Heat shrink sealing technology can be applied to a variety of industries. For example, it can be used in the industrial field to protect the surface of items, or in the packaging industry to seal and package items.

[0003] Heat shrink sealing technology typically requires the use of a heat shrinking device. When sealing an item, a protective material needs to be wrapped around its surface. This protective material can be a plastic film or a heat shrink tube. The heat shrinking device heats the protective material on the surface, causing it to melt and shrink to adhere to the surface of the item, thus protecting it.

[0004] However, the heat shrink device in the relevant technology has a relatively complex structure, resulting in a large size and space occupation. In addition, the heat shrink device in the relevant technology generates a high temperature during the plastic sealing process, which limits its application range. Utility Model Content

[0005] This application provides a heat shrink sealing device to solve the problems of large size, large space occupation, and limited application range of heat shrink devices in related technologies.

[0006] This application provides a heat shrink sealing device, including a housing, a hot air assembly, an air duct assembly, and a support platform. Both the hot air assembly and the air duct assembly are disposed within the housing. The hot air assembly provides hot air. The air duct assembly has a hot air channel inside and two ports communicating with the hot air channel. One port of the air duct assembly is connected to the air outlet of the hot air assembly, allowing the hot air blown out by the hot air assembly to enter the hot air channel. The other port of the air duct assembly extends out of the housing to output the hot air from inside the hot air channel. The support platform is located outside the housing. The support platform includes a rotatable component for supporting the product to be sealed. The rotatable component is located in the propagation path of the hot air output from the air duct assembly. The air duct assembly includes an air inlet, a ventilation section, and an air outlet connected in sequence. The air inlet has an air inlet duct, the ventilation section has a ventilation duct, and the air outlet has an air outlet duct. The air inlet, the ventilation duct, and the air outlet duct are connected to form the hot air channel. An air outlet is formed at the end of the air outlet away from the air inlet, which is connected to the air outlet duct. An air inlet is formed at the end of the air inlet away from the air outlet, which is connected to the air inlet and is connected to the heat sealing assembly. The end of the air outlet away from the ventilation section is located outside the housing. The air duct assembly also includes a protective cover connected to the housing. The protective cover covers the end of the air outlet located outside the housing. There is a gap between the protective cover and the surface of the air outlet, and the gap between the protective cover and the air outlet is filled with a heat insulation component.

[0007] The heat shrink molding device provided in this application, by setting up a shell, a hot air assembly, and an air duct assembly, can achieve the molding of mobile phones by transmitting hot air from the hot air assembly. The structure is relatively simple, lightweight, and small in size, making it easy to manufacture and cost-effective. Furthermore, the support platform for supporting the mobile phone is located outside the shell, allowing the molding operation to be performed on the outside of the shell. Compared to molding in a closed environment, molding on the outside of the shell increases the heat dissipation space during molding, preventing the surface temperature of the mobile phone from becoming too high and effectively protecting the phone from high-temperature damage, thus broadening its application range. In addition, this application places the mobile phone on a rotating component, and rotating the component allows the entire periphery of the phone to be rotated into the hot air path for molding all parts of the phone. The cooperation of the air inlet, ventilation, and outlet creates a channel for the flow of hot air, guiding the heat seal to the predetermined position. The protective cover isolates the temperature of the outlet structure outside the shell, preventing injury from accidental contact with the hot air outlet. By setting gaps and filling the gaps with insulation, the heat insulation effect of the air outlet is improved.

[0008] In one possible implementation, the hot air assembly includes a heating element and a fan, the heating element being located between the fan and the port of the air duct assembly, with the fan's outlet blowing air directly onto the heating element. The fan and heating element work together to heat the airflow blown by the fan, allowing the hot air to flow along the hot air channel inside the air duct assembly to the product to be plastic-sealed on the outside of the housing.

[0009] In one possible implementation, the hot air assembly further includes a housing disposed within the outer shell. An air cavity is provided within the housing, and both the heating element and the fan are disposed within the air cavity. The air cavity has an opening at at least one end, and the port of the air duct assembly is connected to the opening of the air cavity. By providing a housing with an air cavity inside, the fan and heating element can be housed within the air cavity. The air cavity provides a confined space, limiting the outward diffusion of the fan's airflow and ensuring that the fan's airflow can be directed towards the heating element. It also ensures that the hot air heated by the heating element can flow sufficiently into the air duct assembly.

[0010] In one possible implementation, the dimension of the end of the air inlet duct furthest from the ventilation section is larger than the dimension of the end of the air inlet duct closest to the ventilation section, and the dimension of the air inlet duct gradually decreases from the end furthest from the ventilation section to the end closest to the ventilation section. This allows the air inlet duct to form a constricted structure, where the flow velocity of hot air entering the air inlet duct is lower than the flow velocity of hot air exiting the air inlet duct, which helps to increase the flow velocity of hot air.

[0011] In one possible implementation, the air outlet is oriented towards the rotating component, and the size of the air outlet is larger than the thickness of the product to be sealed. The inner wall of the air outlet has a relatively inclined slope or a curved surface bending in opposite directions. Orienting the air outlet towards the rotating component ensures that hot air flows directly onto the product to be sealed on the rotating component. By setting the inner wall of the air outlet as a relatively inclined slope or a curved surface bending in opposite directions, the hot air can be concentrated, preventing it from easily diffusing outwards after it flows out.

[0012] In one possible implementation, the housing is further provided with a mounting position, and the support platform includes a platform body fixedly connected to the mounting position, with the rotating member rotatably connected to the platform body. Thus, by mounting the platform body to the mounting position, the entire support platform can be fixed to the surface of the housing.

[0013] In one possible implementation, the support platform further includes a driving member, the driving end of which is rotatably disposed, and a rotating member connected to the driving end of the driving member. The rotating member also has a protruding support member. By providing the driving member, the rotating member can be automatically driven to rotate, which helps to maintain the rotating member in a continuous rotating state. Attached Figure Description

[0014] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0015] Figure 1 This is a schematic diagram of the structure of a heat shrink sealing device provided in an embodiment of this application;

[0016] Figure 2 This is a schematic diagram of a heat shrink sealing device provided in an embodiment of this application.

[0017] Explanation of reference numerals in the attached figures:

[0018] 10-Outer casing; 11-Air inlet; 12-Accommodation cavity; 13-Mounting position;

[0019] 20-Hot air assembly; 21-House; 211-Air cavity; 22-Heating element; 23-Fan;

[0020] 30 - Air duct assembly; 31 - Air inlet; 311 - Air inlet; 312 - Air inlet duct; 32 - Ventilation section; 321 - Ventilation duct; 33 - Air outlet; 331 - Air outlet; 332 - Air outlet duct; 34 - Protective cover; 35 - Heat insulation component;

[0021] 40-Support platform; 41-Platform body; 42-Drive component; 43-Rotating component; 431-Support component.

[0022] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0023] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0024] This application provides a heat shrink sealing device. The heat shrink sealing device heats the protective material of the outer packaging of a product to be protected, causing the protective material to shrink and thus protecting the surface of the product. Many products require heat shrink sealing, such as cables or wire harnesses, or electronic devices. This application uses the heat shrink sealing of electronic devices as an example.

[0025] The electronic devices in this application include, but are not limited to, mobile phones and tablets. This application specifically uses the example of wrapping a mobile phone displayed on a counter for protection. The display unit is shown on the counter for customers to experience. During use, customers may cause some wear and tear on the surface of the phone. To prevent wear and tear on the surface of the display unit, a plastic film needs to be wrapped around the outside of the display unit to protect the surface of the phone.

[0026] It should be noted that if the plastic film is not properly sealed after being wrapped around the phone, it will be too loose, making it inconvenient for customers and affecting their experience. Therefore, a heat-shrink sealing device is needed to heat the plastic film on the phone's surface, causing it to shrink and adhere to the phone's surface.

[0027] However, the heat shrink sealing devices in related technologies are mainly designed for cables or wire harnesses, primarily used for industrial heat shrink sealing. They are relatively large and occupy a lot of space, making them inconvenient for sealing mobile phones. Furthermore, to ensure sufficient sealing temperature, these heat shrink sealing devices typically place the product inside a sealed cavity. While this increases the sealing temperature, such high temperatures can be very damaging to mobile phones, easily causing damage to internal components.

[0028] Based on the above problems, this application provides a heat shrink sealing device that can perform heat shrink sealing on mobile phones. It is small in size and occupies little space, and can be compatible with both large and small space operations. Moreover, during the sealing process, the mobile phone is less likely to overheat, which helps to ensure that the mobile phone is not damaged by high temperature.

[0029] See Figure 1 and Figure 2 As shown in the embodiments of this application, the heat shrink sealing device mainly includes a housing 10, a hot air assembly 20, an air duct assembly 30, and a support platform 40. The housing 10 is the main structure of the entire device, which mainly provides support and protection, and the housing 10 also provides an installation environment.

[0030] The housing 10 has an internal cavity 12, within which the hot air assembly 20 and the air duct assembly 30 are both housed. The hot air assembly 20 provides hot air, which is blown out from its outlet 33. The air duct assembly 30 has an internal hot air channel and two ports connected to the hot air channel. One port of the air duct assembly 30 is connected to the outlet 33 of the hot air assembly 20, allowing the hot air blown out by the hot air assembly 20 to enter the hot air channel. The other port of the air duct assembly 30 extends out of the housing 10, through which the hot air in the hot air channel can be output.

[0031] The support platform 40 is located outside the housing 10. The support platform 40 includes a rotatable member 43, which is used to support the product to be plastic-sealed. The rotatable member 43 is located on the propagation path of the hot air output from the air duct assembly 30.

[0032] After the product to be sealed is wrapped with a sealing film, it can be placed on the rotating part 43. Hot air blown out from the hot air channel can flow through the rotating part 43, thereby sealing the product to be sealed on it.

[0033] This application embodiment achieves mobile phone plastic sealing simply by setting up a shell 10, a hot air assembly 20, and an air duct assembly 30. The air duct assembly 30 can transmit hot air from the hot air assembly 20. The structure is relatively simple, lightweight, and small in size, making it easy to manufacture and cost-effective. Furthermore, the support platform 40 for supporting the mobile phone is located outside the shell 10, allowing the plastic sealing operation to be performed outside the shell 10. Compared to plastic sealing in a closed environment, this application increases the heat dissipation space during plastic sealing, preventing the surface temperature of the mobile phone from becoming too high and effectively protecting the mobile phone from high-temperature damage, thus broadening its application range. Additionally, this application also places the mobile phone on a rotating component 43, and by rotating the rotating component 43, easily rotates all sides of the mobile phone into the hot air path, thereby sealing all parts of the mobile phone's periphery.

[0034] See Figure 1 and Figure 2 As shown in this embodiment, the hot air assembly 20 includes a heating element 22 and a fan 23. The heating element 22 generates the heat required for encapsulation, and the fan 23 generates airflow to transfer heat to the air duct assembly 30. Specifically, the heating element 22 is located between the fan 23 and the port of the air duct assembly 30. The fan 23 draws airflow from inside the housing 10 and blows it out through the air outlet 33 of the fan 23. The air outlet 33 of the fan 23 blows air directly onto the heating element 22. The heating element 22 can heat the airflow blown out by the fan 23. The airflow blown out by the fan 23 can flow through the port of the air duct assembly 30 into the air duct assembly 30, thereby transmitting hot air into the hot air channel of the air duct assembly 30.

[0035] It should be noted that an air inlet 11 is also provided on the outer casing 10. The air inlet 11 is positioned directly opposite the fan 23. The air inlet 11 can connect the housing cavity 12 of the outer casing 10 with the external environment in order to balance the air pressure inside the outer casing 10.

[0036] For example, in this application, the heating element 22 can be a heating wire, a thermistor, or a heating film, etc., and the fan 23 can be an axial flow fan 23 or a vortex fan 23, etc.

[0037] It should be noted that when the fan 23 blows air onto the heating element 22, the airflow path after being heated by the heating element 22 may be dispersed, preventing some of the hot air from entering the hot air channel. In order to ensure that the hot air is fully transferred into the hot air channel, the heating element 22 can be placed as close as possible to the port of the air duct assembly 30. For example, the heating element 22 can be placed directly inside the air duct assembly 30 and close to the port. In this way, as long as the airflow generated by the fan 23 can flow into the air duct assembly 30, it can generate heat under the action of the heating element 22.

[0038] In another embodiment, the heating element 22 can be disposed in a pipe with openings at both ends. One end of the pipe is connected to the air duct assembly 30, and the other end of the pipe is connected to the air outlet 33 of the fan 23. This allows the airflow generated by the fan 23 to flow through the pipe to the air duct assembly 30 and be heated by the heating element 22 during the flow.

[0039] See Figure 1 and Figure 2 As shown in this embodiment, the hot air assembly 20 further includes a housing 21, which is disposed within the outer casing 10. An air cavity 211 is provided inside the housing 21. The heating element 22 and the fan 23 are both disposed within the air cavity 211. At least one end of the air cavity 211 is open, and the port of the air duct assembly 30 is connected to the opening of the air cavity 211. The port size of the air duct assembly 30 is adapted to the opening size of the air cavity 211. The air cavity 211 serves as a structure to restrict airflow, allowing the airflow generated by the fan 23 to flow along the opening path of the air cavity 211 to the air duct assembly 30. The heating element 22 is disposed along the airflow path to heat the airflow. Thus, the airflow generated by the fan 23 can not only be sufficiently heated by the heating element 22 but also fully transmitted to the air duct assembly 30.

[0040] For example, the housing 21 is provided with another opening connected to the air cavity 211 at the end away from its connection with the air duct assembly 30, so as to balance the pressure inside the air cavity 211 and provide airflow to the fan 23.

[0041] See Figure 1 and Figure 2As shown in the embodiment of this application, the air duct assembly 30 includes an air inlet 31, a ventilation section 32, and an air outlet 33 connected in sequence. The air inlet 31 has an air inlet duct 312 extending through it along its length. The ventilation section 32 has a ventilation duct 321 extending through it along its length. The air outlet 33 has an air outlet duct 332 extending through it along its length. The two ends of the ventilation duct 321 are respectively connected to the air outlet duct 332 and the air inlet duct 312 to form a hot air channel. An air outlet 331 is formed at the end of the air outlet 33 away from the air inlet 31, which is connected to the air outlet duct 332. An air inlet 311 is formed at the end of the air inlet 31 away from the air outlet 33, which is connected to the air inlet 31. The air inlet 311 is connected to the heat sealing assembly.

[0042] It should be noted that the air inlet 31, ventilation section 32, and air outlet 33 can be integrally molded to facilitate manufacturing and processing, and to improve the overall integrity of the air duct assembly 30. In the embodiments of this application, the air inlet 31, ventilation section 32, and air outlet 33 are independently arranged, and the three can be connected together by adhesive, or they can be detachably connected together by snap-fit ​​structures, fastening structures, screws, etc.

[0043] By independently setting the air inlet 31, ventilation 32 and air outlet 33, the shape of the three parts is more flexible, and any part can be disassembled and replaced for repair if it is damaged, which facilitates maintenance and repair.

[0044] In some feasible implementations, the end of the air inlet 31 away from the ventilation section 32 is connected to the housing 21 to receive hot air flowing out of the air cavity 211 of the housing 21. The size of the end of the air inlet duct 312 away from the ventilation section 32 is larger than the size of the end of the air inlet duct 312 near the ventilation section 32, and the size of the air inlet duct 312 gradually decreases from the end away from the ventilation section 32 to the end near the ventilation section 32. This can increase the airflow velocity inside the air inlet duct 312, so that the airflow velocity flowing into the air inlet duct 312 from the housing 21 is less than the airflow velocity flowing out of the air inlet duct 312.

[0045] It should be noted that, in order to reduce the material used in the air inlet 31, the shape of the air inlet 31 can be set to match the shape of the air inlet duct 312, so that the size of the air inlet 31 gradually decreases from the end near the housing 21 to the end near the ventilation section 32.

[0046] In some feasible implementations, the end of the air outlet 33 away from the ventilation section 32 is located outside the housing 10, so that hot air can flow out of the housing 10 from the air outlet 331 on the air outlet 33. Because the temperature of hot air can be harmful to the human body, in order to prevent the human body from being burned by contacting the air outlet 33 outside the housing 10, the embodiment of this application also isolates the end of the air outlet 33 away from the ventilation section 32, so that its temperature is isolated and no damage will be caused to the human body even if the human body touches it accidentally.

[0047] Specifically, the air duct assembly 30 also includes a protective cover 34, which is connected to the housing 10. The protective cover 34 covers the end of the air outlet 33 located outside the housing 10. The protective cover 34 has an opening that communicates with its internal space. The air outlet 331 on the air outlet 33 is positioned opposite the opening of the protective cover 34, so that hot air can flow out smoothly.

[0048] For example, the protective cover 34 can be made of heat insulation material. By setting the protective cover 34, the air outlet 33 can be covered inside to prevent the human body from directly contacting the air outlet 33, which can effectively prevent the human body from accidentally touching the air outlet 33 and causing injury.

[0049] For example, a gap can be provided between the surfaces of the protective cover 34 and the air outlet 33. By providing a gap, the protective cover 34 and the air outlet 33 are isolated, making it difficult for heat from the air outlet 33 to be transferred into the protective cover 34, thus effectively isolating the heat from the air outlet 33. Alternatively, a heat insulation component 35, such as asbestos or rock wool, can be filled into the gap between the protective cover 34 and the air outlet 33. By filling the gap between the protective cover 34 and the air outlet 33 with a heat insulation component 35, the heat from the air outlet 33 can be effectively blocked.

[0050] In some feasible ways, the rotating part 43 is used to place the product to be plasticized. In order to ensure that the hot air flowing out of the air outlet 331 can fully plasticize the product, the air outlet 331 is set to face the rotating part 43, so that the hot air flowing out of the air outlet 331 can flow directly to the product to be plasticized.

[0051] It should be noted that the size of the air outlet 331 in terms of the thickness of the product to be sealed is larger than the thickness of the product to be sealed, so that the product to be sealed is within the range of the air outlet 331. In this way, the hot air blown out of the air outlet 331 can wrap the product to be sealed, so that the parts of the product to be sealed can receive the hot air for sealing.

[0052] For example, the size of the air outlet 331 can be set to be smaller than the size of the air outlet 332 to accelerate the flow rate of heat from the air outlet 331. For instance, the inner wall of the air outlet 331 can be set to have a relatively inclined slope or an arc surface that bends in opposite directions. This can achieve a narrowing structure between the air outlet 331 and the air outlet 332, which can not only increase the airflow velocity but also play a converging role.

[0053] See Figure 1 and Figure 2 As shown in the embodiment of this application, an opening can be made through the outer shell 10, and the opening is connected to the inside of the outer shell 10. The air outlet 33 can extend out of the outer shell 10 through the opening. In order to ensure airtightness, a sealing ring can also be provided at the opening to seal the air outlet 33 and the opening.

[0054] Alternatively, in another embodiment, an opening extends through the outer casing 10, and the air outlet 33 and the ventilation section 32 are separately disposed. The end of the ventilation section 32 away from the air inlet 31 can abut against the side of the outer casing 10 where the opening is located inside the outer casing 10, and the end of the air outlet 33 away from its air outlet 331 abuts against the side of the outer casing 10 where the opening is located outside the outer casing 10, so that the opening of the outer casing 10 is sandwiched between the air outlet 33 and the ventilation section 32. In this way, the ventilation section 32 and the air outlet 33 can be installed on the outer casing 10 respectively, which facilitates the disassembly and replacement of both.

[0055] In some feasible implementations, the housing 10 is further provided with a mounting position 13, and a support platform 40 is disposed on the mounting position 13 of the housing 10. The support platform 40 includes a platform body 41, which is fixedly connected to the mounting position 13, and a rotating component 43 is rotatably connected to the platform body 41. When the rotating component 43 rotates, it can drive the mobile phone located on it to rotate, so that the side of the mobile phone can pass through the hot air flow path blown out from the air outlet 331 360°, so as to seal the side of the mobile phone 360°.

[0056] It should be noted that the mounting position 13 can be a region defined at the top of the housing 10, and the support platform 40 can be directly installed in this region by screws. Alternatively, the mounting position 13 can also be a mounting base protruding from the top of the housing 10, and the platform 41 of the support platform 40 can be installed on the mounting base.

[0057] In this embodiment, the mounting position 13 is a mounting groove recessed from the top of the outer shell 10 into the interior of the outer shell 10. The platform 41 can be accommodated in the mounting groove, so that part of the structure of the platform 41 is located inside the outer shell 10, so as to make full use of the internal space of the outer shell 10 and minimize the size of the platform 41 protruding outside the outer shell 10, thereby reducing the space occupancy rate.

[0058] In this embodiment of the application, the support platform 40 further includes a drive member 42, which is located inside the platform body 41. The drive end of the drive member 42 is rotatably configured. The drive member 42 can be a motor, and the output shaft of the motor is the drive end. The rotating member 43 is connected to the drive end of the drive member 42, so that the rotation of the rotating member 43 can be controlled by the drive member 42.

[0059] In addition, to ensure sufficient adhesion between the plastic sealant and the phone surface, the contact area between the phone surface and the support member 431 should be as small as possible. This allows a larger area of ​​the phone surface to be exposed to the hot air path. Therefore, in this embodiment, the rotating member 43 also has a protruding support member 431. Multiple support members 431 are provided, and the phone can be directly placed on the support member 431. By using the support member 431 to support the phone, compared to placing the phone directly on the rotating member, the contact area between the support member 431 and the phone is smaller, resulting in a larger exposed surface area of ​​the phone, which is beneficial for fully sealing the phone surface.

[0060] In some feasible ways, in order to facilitate the control of the opening and closing of the fan 23, the heating element 22 and the drive element 42, multiple control buttons can be provided on the outer wall of the housing 10. The fan 23, the heating element 22 and the drive element 42 are each provided with at least one control button. By pressing the control button, the fan 23, the heating element 22 and the drive element 42 can be controlled to open and close.

[0061] In other possible implementations, the control buttons can be replaced with a control screen that can be touched. The control screen has a touch area for controlling the fan 23, the heating element 22 and the drive element 42 to turn on and off. By touching the corresponding touch area of ​​the control screen, the fan 23, the heating element 22 and the drive element 42 can be turned on and off.

[0062] In addition to buttons for controlling the opening and closing of the fan 23, heating element 22, and drive element 42, knobs can also be provided for controlling the power of the three components. Adjusting the knobs allows for control of their power levels. For example, the knobs can adjust the heating power of the heating element 22, enabling it to heat the airflow to different temperatures; adjusting the power of the fan 23 adjusts the airflow speed and force; and adjusting the power of the drive element 42 adjusts the speed at which it rotates the rotating element 43.

[0063] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0064] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A heat shrink sealing device, characterized in that, This includes the outer casing, hot air assembly, air duct assembly, and support platform; Both the hot air assembly and the air duct assembly are disposed within the housing, and the hot air assembly is used to provide hot air; The air duct assembly has a hot air channel inside, and the air duct assembly is also provided with two ports connected to the hot air channel. The air duct assembly is connected to the air outlet of the hot air assembly through one of the ports, so that the hot air blown out by the hot air assembly enters the hot air channel. The other port of the air duct assembly extends out of the outer shell and is used to output the hot air inside the hot air channel. The support platform is located outside the housing. The support platform includes a rotatable component for supporting the product to be plastic-sealed. The rotatable component is located on the propagation path of the hot air output from the air duct assembly. The air duct assembly includes an air inlet, a ventilation section, and an air outlet connected in sequence. The air inlet is provided with an air inlet duct, the ventilation section is provided with a ventilation duct, and the air outlet is provided with an air outlet duct. The air inlet, the ventilation duct, and the air outlet duct are connected to form the hot air channel. An air outlet connected to the air outlet duct is formed at the end of the air outlet away from the air inlet. An air inlet connected to the air inlet is formed at the end of the air inlet away from the air outlet. The air inlet is connected to the hot air assembly. The end of the air outlet furthest from the ventilation section is located outside the housing. The air duct assembly also includes a protective cover, which is connected to the housing and covers the end of the air outlet located outside the housing. There is a gap between the surface of the protective cover and the air outlet, and the gap between the protective cover and the air outlet is filled with heat insulation material.

2. The heat shrink sealing device according to claim 1, characterized in that, The hot air assembly includes a heating element and a fan. The heating element is located between the port of the fan and the air duct assembly, and the air outlet of the fan blows air directly onto the heating element.

3. The heat shrink sealing device according to claim 2, characterized in that, The hot air assembly further includes a housing, which is disposed within the outer shell. An air cavity is provided inside the housing. The heating element and the fan are both disposed within the air cavity. The air cavity is open at at least one end, and the port of the air duct assembly is connected to the opening of the air cavity.

4. The heat shrink sealing device according to claim 1, characterized in that, The size of the end of the air inlet duct away from the ventilation section is larger than the size of the end of the air inlet duct near the ventilation section, and the size of the air inlet duct gradually decreases from the end away from the ventilation section to the end near the ventilation section.

5. The heat shrink sealing device according to claim 1, characterized in that, The air outlet is oriented toward the rotating component, and the size of the air outlet is larger than the thickness of the product to be plastic-sealed. The inner wall of the air outlet has a relatively inclined slope or an arc surface that bends in opposite directions.

6. The heat shrink sealing device according to claim 1, characterized in that, The outer casing is also provided with a mounting position, and the support platform includes a platform body, which is fixedly connected to the mounting position, and the rotating component is rotatably connected to the platform body.

7. The heat shrink sealing device according to claim 6, characterized in that, The support platform also includes a driving component, the driving end of the driving component is rotatably disposed, the rotating component is connected to the driving end of the driving component, and the rotating component is also provided with a supporting component protruding therefrom.

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