Thermal shrinkage film device and sealing machine with same

Abstract

The utility model relates to a thermal shrinkage film device and a sealing machine with the same. The thermal shrinkage film device comprises a rack, a shrinkage chamber, a heating element and a conveying assembly, the shrinking chamber is arranged on the rack; the heating element is arranged in the shrinking chamber; the conveying assembly is arranged on the rack, penetrates through the contraction chamber and specifically comprises a conveying chain, a rotating shaft, a self-rotating gear, a rack and a driving part; the two conveying chains are oppositely arranged on the two sides of the rack. Two ends of the rotating shaft are fixed on the conveying chain; the autorotation gears sleeve the two ends of the rotating shaft and are located on one side of the conveying chain; the rack is arranged on the machine frame and connected with the rotation gear in a meshed mode. And the driving part is connected with the conveying chain. According to the scheme provided by the invention, the shrink film wrapping the product can be uniformly heated, so that the consistency of the thermal shrinkage performance of the shrink film is effectively improved, the shrink film can be tightly attached to the surface of the product, the shrink film can adapt to products of different sizes, and the shrink film is simple in structure and high in universality and practicability.

Description

Technical Field

[0001] This utility model relates to the field of heat shrink film technology, and in particular to a heat shrink film device and a sealing machine having the same. Background Technology

[0002] A heat shrink film device is a machine that wraps a product in shrink film, heats it to shrink the film, and then presses it tightly against the product surface using a sealing machine to form a tight seal. This protects the product, improves its appearance, and extends its shelf life. It belongs to the category of shrink wrapping packaging machinery. Products packaged with shrink film are not only aesthetically pleasing but also have sealing, dustproof, moisture-proof, and anti-theft properties. It is widely used in the single, collective, or combined packaging of products such as food, beverages, pharmaceuticals, daily chemicals, hardware, wood products, cultural and educational supplies, printed products, plastic products, glass products, and electronic components.

[0003] However, existing heat shrink film devices typically have heating modules positioned at a fixed location when shrinking the shrink film. For example, when the heating module is positioned above the product, the upper shrink film is exposed to a higher temperature, causing it to soften, fold, and shrink, resulting in uneven packaging and affecting the product's appearance. Conversely, the lower shrink film is exposed to a lower temperature, causing it to harden and become difficult to shrink, resulting in loose packaging and affecting the product's sealing and moisture-proof properties.

[0004] Therefore, there is an urgent need to design a brand-new heat shrink film device and a sealing machine with it, which can make the product rotate at a uniform speed, thereby ensuring that the heat shrink film wrapping the product is heated evenly, thus effectively improving the consistency of the heat shrink performance of the shrink film, ensuring that the shrink film can be tightly adhered to the product surface, improving the packaging quality and aesthetics of the product, effectively preventing external factors such as dust and moisture from damaging the product, and can also adapt to products of different sizes, with a simple structure, strong versatility and practicality. Utility Model Content

[0005] To overcome the problems existing in related technologies, this application provides a heat shrink film device and a sealing machine having the same. The heat shrink film device can make the product rotate at a uniform speed, thereby making the heat shrink film wrapping the product heat evenly heated, thus effectively improving the consistency of the heat shrink performance of the shrink film, ensuring that the shrink film can be tightly adhered to the product surface, improving the packaging quality and aesthetics of the product, effectively preventing external factors such as dust and moisture from damaging the product, and can also adapt to products of different sizes. Moreover, it has a simple structure and strong versatility and practicality.

[0006] The first aspect of this application is to provide a heat-shrinkable film apparatus, including a frame, a shrink chamber, a heating element, and a conveying assembly; the shrink chamber is disposed on the frame; the heating element is disposed within the shrink chamber; the conveying assembly is disposed on the frame and passes through the shrink chamber, specifically including a conveying chain, a rotating shaft, a self-rotating gear, a rack, and a drive unit; two conveying chains are disposed opposite each other on both sides of the frame; both ends of the rotating shaft are fixed to the conveying chains; the self-rotating gear is sleeved on both ends of the rotating shaft and located on one side of the conveying chains; the rack is disposed on the frame and can mesh with the self-rotating gear; the drive unit is connected to the conveying chains and is used to provide power to the conveying chains.

[0007] In a preferred embodiment of this application, a plurality of insert rods are provided on opposite sides of the two conveyor chains; the plurality of insert rods are equidistantly distributed on the conveyor chains, and one end of any one insert rod is connected to the conveyor chain, and the other end is inserted into the rotating shaft.

[0008] In a preferred embodiment of this application, the rack is disposed at the front end of the conveying assembly.

[0009] In a preferred embodiment of this application, the drive unit includes a drive motor, a drive shaft, a driven shaft, and a gear set; the drive motor is mounted on the frame and connected to the drive shaft; the drive shaft and the driven shaft are respectively mounted at both ends of the frame; the gear set is respectively sleeved on the drive shaft and the driven shaft; and the transmission chain is respectively sleeved on the gear set.

[0010] In a preferred embodiment of this application, the shrink chamber includes an inlet and an outlet; the inlet and the outlet are disposed opposite to each other on two sides of the shrink chamber and are arranged sequentially along the conveying direction of the conveying assembly.

[0011] In a preferred embodiment of this application, the shrink chamber further includes an observation window; the observation window is disposed on the side wall of the shrink chamber and is transparent, so that the user can clearly observe the shrinkage of the product inside the shrink chamber.

[0012] In a preferred embodiment of this application, a fan is also included; the fan is disposed within the contraction chamber, and the axis of the fan is perpendicular to the conveying direction of the conveying assembly.

[0013] In a preferred embodiment of this application, an electrical control box is further provided on one side of the frame; the electrical control box includes a power switch button, an emergency stop button, a fan start / stop button, a heating knob, and a display screen; the power switch button, the fan start / stop button, the heating knob, and the emergency stop button are sequentially provided on the top of the electrical control box; the display screen is provided next to the heating knob and is used to display the heating temperature of the heating element in real time.

[0014] In a preferred embodiment of this application, a cooling box is further included; the cooling box is mounted on a frame and located at the end of the conveying assembly; a cooling fan is provided inside the cooling box.

[0015] A second aspect of this application is to provide a sealing machine, including the aforementioned heat shrink film device.

[0016] The technical solution provided in this application can include the following beneficial effects: The heat shrink film device provided in this application includes a frame, a shrink chamber, a heating element, and a conveying assembly. By installing a fan in the shrink chamber, the airflow around the product can be effectively accelerated, making the temperature in the shrink chamber more uniform. At the same time, by setting a combination structure of a rotating shaft, a self-transmitting gear, and a rack on the conveying assembly, the product can rotate while moving, thereby ensuring that the shrink film on the product is heated evenly. This allows the shrink film to adhere more tightly to the product during the heating process, avoiding poor adhesion caused by uneven heating. Moreover, by setting a plug rod to connect the rotating shaft to the conveying chain, the user can adjust the distance between the rotating shafts according to the product size to adapt to products of different sizes, improving versatility and practicality. Compared with existing heat shrink film devices, the solution proposed in this application enables the product to rotate at a uniform speed, thereby ensuring that the heat shrink film wrapping the product is heated evenly. This effectively improves the consistency of the heat shrink performance of the shrink film, ensuring that the shrink film can adhere tightly to the product surface, enhancing the packaging quality and aesthetics of the product. It also effectively prevents external factors such as dust and moisture from damaging the product, and can be adapted to products of different sizes. Furthermore, it has a simple structure and strong versatility and practicality.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0018] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0019] Figure 1This is a schematic diagram of the structure of the heat-shrinkable film device shown in the embodiments of this application;

[0020] Figure 2 This is a top view schematic diagram of the heat-shrinkable film device shown in the embodiments of this application;

[0021] Figure 3 This is a side view schematic diagram of the heat-shrinkable film device shown in the embodiments of this application;

[0022] Figure 4 This is a partial structural schematic diagram of the heat-shrinkable film device shown in the embodiments of this application;

[0023] Figure 5 yes Figure 4 A magnified view of A in the middle.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Frame; 2. Shrink chamber; 21. Inlet; 22. Outlet; 3. Conveyor assembly; 31. Conveyor chain; 32. Shaft; 33. Self-rotating gear; 34. Rack; 35. Insert rod; 36. Drive shaft; 37. Driven shaft; 38. Gear set; 4. Electrical control box; 41. Power switch button; 42. Emergency stop button; 43. Fan start / stop button; 44. Heating knob; 45. Display screen. Detailed Implementation

[0026] Preferred embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0027] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0028] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0029] In existing heat shrink film devices, the heating module is usually located in a fixed position during the shrinking process. For example, when the heating module is positioned above the product, the shrink film at the top receives a higher temperature, causing it to soften, fold, and shrink easily, resulting in uneven packaging and affecting the product's appearance. Conversely, the shrink film at the bottom receives a lower temperature, causing it to harden and become difficult to shrink, resulting in loose packaging and affecting the product's sealing and moisture-proof properties.

[0030] To address the aforementioned issues, this application provides a heat shrink film device that enables the product to rotate at a uniform speed, thereby ensuring that the heat shrink film wrapping the product is heated evenly. This effectively improves the consistency of the heat shrink performance of the shrink film, ensuring that the shrink film adheres tightly to the product surface, enhancing the packaging quality and aesthetics of the product. It also effectively prevents external factors such as dust and moisture from damaging the product, and can be adapted to products of different sizes. Furthermore, it has a simple structure and strong versatility and practicality.

[0031] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0032] Example 1

[0033] Please see Figures 1-5The heat shrink film device of this application includes a frame 1, a shrink chamber 2, a heating element, and a conveying assembly 3. The shrink chamber 2 is mounted on and fixedly connected to the frame 1, providing a space for heat shrinking the shrink film. The heating element is located inside the shrink chamber 2 and is used to heat the shrink film to a suitable temperature. For example, the heating element is an electric heating wire or an infrared heater. The conveying assembly 3 is mounted on the frame 1 and passes through the shrink chamber 2, conveying the product into the shrink chamber 2 to facilitate the adhesion of the shrink film to the product. To facilitate cleaning and improve stability, both the frame 1 and the shrink chamber 2 are made of stainless steel or aluminum alloy. Furthermore, the heat shrink film device also includes casters and feet, both located at the bottom of the frame 1. The casters facilitate movement of the entire heat shrink film device, and the feet effectively improve the stability of the entire device.

[0034] like Figures 1-3 As shown, the shrink chamber 2 includes an inlet 21 and an outlet 22. The inlet 21 and outlet 22 are arranged opposite each other on both sides of the shrink chamber 2 and are sequentially arranged along the conveying direction of the conveying assembly 3. This allows the product to enter the shrink chamber 2 through the inlet 21 under the conveying of the conveying assembly 3, be heated by the heating element inside the shrink chamber 2 and adhered to the product, and then exit from the outlet 22. Furthermore, to make the temperature inside the shrink chamber 2 more uniform, the heat shrink film device also includes a fan. The fan is located inside the shrink chamber 2, and the axis of the fan is perpendicular to the conveying direction of the conveying assembly 3, so that the fan air can blow towards the product location, accelerating the airflow around the product and thus equalizing the temperature around the product. To facilitate real-time observation of the shrinkage status by the user, the shrink chamber 2 also includes an observation window. The observation window is located on the side wall of the shrink chamber 2 and is transparent, allowing the user to clearly observe the shrinkage of the product inside the shrink chamber 2.

[0035] like Figures 4-5As shown, the conveying assembly 3 includes a conveying chain 31, a rotating shaft 32, and a drive unit. The two conveying chains 31 are arranged opposite each other on both sides of the frame 1. The two ends of the rotating shaft 32 are fixed on the conveying chains 31. The drive unit is connected to the conveying chains 31 and is used to provide power to the conveying chains 31. Specifically, the drive unit includes a drive motor, a drive shaft 36, a driven shaft 37, and a gear set 38. The drive motor is mounted on the frame 1 and connected to the drive shaft 36. The drive shaft 36 and the driven shaft 37 are respectively located at both ends of the frame 1. The gear set 38 is respectively sleeved on the drive shaft 36 and the driven shaft 37. The transmission chain 31 is respectively sleeved on the gear set 38. When the drive motor starts, it drives the gear set 38 to rotate, which in turn drives the drive shaft 36, the driven shaft 37, and the transmission chain 31 to rotate, thereby driving the rotating shaft 32 connected to the transmission chain 31 to move, and thus driving the product located on the rotating shaft 32 to move.

[0036] Furthermore, to ensure uniform force on the shrink film of the product on the conveyor chain 31, the conveying assembly 3 also includes a self-rotating gear 33 and a rack 34. The self-rotating gear 33 is sleeved at both ends of the rotating shaft 32 and located on one side of the conveyor chain 31. The rack 34 is disposed on the frame 1 and can mesh with the self-rotating gear 33, that is, the rack 34 is located directly below the self-rotating gear 33. It should be noted that the length of the rack 34 can be the same as the length of the frame 1 or different. When the length of the rack 34 is different from the length of the frame 1, the rack 34 is located at the front end of the conveying assembly 3. When the conveying assembly 3 conveys the product, driven by the conveying chain 31, the rotating shaft 32 moves towards the end of the conveying assembly 3. When the self-transfer gear 33 on the rotating shaft 32 meshes with the rack 34, the self-transfer gear 33 rotates, thereby driving the rotating shaft 32 connected to it to rotate, and in turn driving the product located on the rotating shaft 32 to rotate. This allows the shrink film wrapped around the product to be heated evenly, effectively avoiding the problem of poor adhesion caused by uneven heating of the shrink film. It should be noted that the conveying direction of the conveying assembly is from the front end to the end end.

[0037] Furthermore, to accommodate products of different sizes, several insertion rods 35 are provided on opposite sides of the two conveyor chains 31. These insertion rods 35 are equidistantly distributed on the conveyor chains 31, with one end connected to the conveyor chain 31 and the other end inserted into the rotating shaft 32. Specifically, the insertion rods 35 are inserted into the conveyor chains 31, and the rotating shaft 32 is fitted onto the insertion rods 35. When it is necessary to change the distance between the rotating shafts 32 to accommodate products of different sizes, simply remove the rotating shaft 32 or the insertion rod 35 and reinsert it onto a different insertion rod 35 or a different node of the conveyor chain 31.

[0038] To prevent damage to the shrink film at high temperatures, the heat shrink film device also includes a cooling box, which is mounted on the frame 1 and located at the end of the conveying assembly 3. A cooling fan is installed inside the cooling box. After the product is conveyed out of the outlet 22 of the shrink chamber 2 by the conveying assembly 3, it enters the cooling box, where the fan blows air onto the product, thereby cooling the shrink film on the product.

[0039] like Figures 1-2 As shown, the heat shrink film device also includes an electrical control box 4 disposed on one side of the frame 1; the electrical control box 4 includes a power switch button 41, an emergency stop button 42, a fan start / stop button 43, a heating knob 44, and a display screen 45; the power switch button 41, the fan start / stop button 43, the heating knob 44, and the emergency stop button 42 are sequentially disposed on the top of the electrical control box 4; wherein, the power switch button 41 is used to turn the power on / off and start or stop the drive motor; the emergency stop button 42 is used to stop the operation of the heat shrink film device in case of a malfunction; the fan start / stop button 43 is used to turn the fan on or off; the heating knob 44 is used to adjust the set temperature of the heating element; the display screen 45 is disposed next to the heating knob 44 and is used to display the heating temperature of the heating element in real time.

[0040] Working principle:

[0041] The product is placed on the rotating shaft 32 of the conveying assembly 3. The rotating shaft 32 moves towards the shrink chamber 2 under the movement of the conveying chain 31. When the self-rotating gear 33 on the rotating shaft 32 meshes with the rack 34, it begins to rotate, thereby driving the rotating shaft 32 and the self-rotating gear to rotate synchronously. At this time, the rotating shaft 32 is in a state of self-rotation while moving towards the shrink chamber 2, and the product is in a state of rotating between two adjacent rotating shafts 32. In this state, the product is conveyed into the shrink chamber 2. The heating element heats the shrink film, and the fan makes the temperature in the shrink chamber 2 more uniform. Because the product is constantly rotating, the shrink film on the product can be heated evenly. When the product moves to the outlet 22 of the shrink chamber 2, the temperature drops, and the shrink film tightly wraps around the product and adheres tightly to the product. Then it enters the cooling box, and the fan blows air towards the product to accelerate the cooling of the shrink film, thereby completing the heat shrink sealing and packaging operation of the product.

[0042] In this first embodiment, the heat shrink film device provided in this application includes a frame, a shrink chamber, a heating element, and a conveying assembly. By installing a fan inside the shrink chamber, the airflow around the product can be effectively accelerated, resulting in a more uniform temperature within the shrink chamber. Simultaneously, by incorporating a combination structure of a rotating shaft, a self-transmitting gear, and a rack on the conveying assembly, the product can rotate while moving, ensuring uniform heating of the shrink film on the product. This allows the shrink film to adhere more tightly to the product during heating, avoiding poor adhesion caused by uneven heating. Furthermore, by providing insert rods to connect the rotating shaft to the conveying chain, users can adjust the distance between the rotating shafts according to the product size to accommodate products of different dimensions, improving versatility and practicality. Compared with existing heat shrink film devices, the solution proposed in this application enables the product to rotate at a uniform speed, thereby ensuring that the heat shrink film wrapping the product is heated evenly. This effectively improves the consistency of the heat shrink performance of the shrink film, ensuring that the shrink film can adhere tightly to the product surface, enhancing the packaging quality and aesthetics of the product. It also effectively prevents external factors such as dust and moisture from damaging the product, and can be adapted to products of different sizes. Furthermore, it has a simple structure and strong versatility and practicality.

[0043] Example 2

[0044] Corresponding to the aforementioned heat shrink film device, this application also proposes a sealing machine; please refer to [link / reference needed]. Figures 1-5 Specifically:

[0045] Based on the structure of Embodiment 1 above, the sealing machine provided in Embodiment 2 of this application includes the heat shrink film device described above.

[0046] The specific structure of the heat-shrinkable film device is detailed in Embodiment 1 above, and will not be repeated here.

[0047] In the description of this application, directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship, which are generally based on the orientation or positional relationship shown in the accompanying drawings. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this application.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A heat-shrinkable film device, characterized in that, Includes a frame (1), a shrink chamber (2), a heating element, and a conveyor assembly (3); The shrink chamber (2) is mounted on the frame (1); The heating element is disposed inside the contraction chamber (2); The conveying assembly (3) is mounted on the frame (1) and passes through the shrink chamber (2), and specifically includes a conveying chain (31), a rotating shaft (32), a self-transmitting gear (33), a rack (34) and a drive unit; The two conveyor chains (31) are arranged opposite each other on both sides of the frame (1); Both ends of the rotating shaft (32) are fixed on the transmission chain (31); The self-transmission gear (33) is sleeved on both ends of the rotating shaft (32) and located on one side of the transmission chain (31); The rack (34) is mounted on the frame (1) and meshes with the self-transmission gear (33); The drive unit is connected to the transmission chain (31) and is used to provide power to the transmission chain (31).

2. The heat-shrinkable film apparatus according to claim 1, characterized in that, Several insert rods (35) are provided on opposite sides of the two conveyor chains (31); Several of the insert rods (35) are equidistantly distributed on the conveyor chain (31), and one end of any one of the insert rods (35) is connected to the conveyor chain (31), while the other end is inserted into the rotating shaft (32).

3. The heat-shrinkable film apparatus according to claim 1, characterized in that, The rack (34) is disposed at the front end of the conveying assembly (3).

4. The heat-shrinkable film apparatus according to claim 1, characterized in that, The drive unit includes a drive motor, a drive shaft (36), a driven shaft (37), and a gear set (38); The drive motor is mounted on the frame (1) and connected to the drive shaft (36); The drive shaft (36) and the driven shaft (37) are respectively disposed at both ends of the frame (1); The gear set (38) is respectively sleeved on the drive shaft (36) and the driven shaft (37); The transmission chains (31) are respectively sleeved on the gear sets (38).

5. The heat-shrinkable film apparatus according to claim 1, characterized in that, The contraction chamber (2) includes an inlet (21) and an outlet (22); The inlet (21) and the outlet (22) are arranged opposite to each other on both sides of the contraction chamber (2) and are arranged sequentially along the conveying direction of the conveying assembly (3).

6. The heat-shrinkable film apparatus according to claim 1, characterized in that, The contraction chamber (2) also includes an observation window; The observation window is located on the side wall of the shrinkage chamber (2) and is transparent, so that the user can clearly observe the shrinkage of the product inside the shrinkage chamber (2).

7. The heat-shrinkable film apparatus according to claim 1, characterized in that, It also includes fans; The fan is located inside the contraction chamber (2), and the axis of the fan is perpendicular to the conveying direction of the conveying assembly (3).

8. The heat-shrinkable film apparatus according to claim 1, characterized in that, It also includes an electrical control box (4) located on one side of the frame (1); The electrical control box (4) includes a power switch button (41), an emergency stop button (42), a fan start / stop button (43), a heating knob (44), and a display screen (45); The power switch button (41), the fan start / stop button (43), the heating knob (44), and the emergency stop button (42) are sequentially arranged on the top of the electrical control box (4); The display screen (45) is located next to the heating knob (44) and is used to display the heating temperature of the heating element in real time.

9. The heat-shrinkable film apparatus according to claim 1, characterized in that, It also includes a cooling box; the cooling box is mounted on the frame (1) and located at the end of the conveying assembly (3); The cooling box is equipped with a cooling fan.

10. A sealing machine, characterized in that, Includes the heat-shrinkable film apparatus according to any one of claims 1-9.

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