Film coating device for a fresh-keeping container

Abstract

This utility model discloses a film-coating device for a food preservation container, comprising: a machine body; a station switching component, disposed on the top of the machine body and capable of switching the position of the container; a film-coating component, disposed on the top of the machine body and on the back of the station switching component; two sets of adjusting components, respectively disposed on both sides of the top of the machine body; and two sets of roller assemblies, respectively disposed on both sides of the machine body. Each adjusting component includes an adjusting roller capable of moving up and down and contacting the bottom surface of the food preservation film. When the food preservation film is pressed down to cover the container, the adjusting roller can move downward. This utility model, through the function of the adjusting components, can prevent the food preservation film from being torn.

Description

Technical Field

[0001] This utility model relates to the field of film covering device technology, specifically a film covering device for a food preservation container. Background Technology

[0002] Food and pharmaceutical products utilize a wide range of food preservation containers, and covering these containers with a film is a crucial step in enhancing their sealing and preservation performance. A good film not only effectively blocks external air, moisture, and microorganisms, extending the shelf life of the contents, but also provides protection during transportation and storage.

[0003] Chinese utility model patent (authorization announcement number CN221091406U) discloses an anti-fog film covering device for processing food preservation containers. The device uses an anti-fog film conveying assembly set on the frame to convey the anti-fog film through a straightening mechanism and then to the upper and lower molds of the hot pressing device and the support platform. The food preservation container is then placed on the lower mold of the support platform by a person. The hot pressing device is then activated, which drives the upper mold to press down to cover the container. The upper mold and the lower mold work together to cover the inner wall of the food preservation container with film.

[0004] The aforementioned prior art discloses an anti-fog film covering device for processing food preservation containers. By placing the container on a lower mold and activating a thermoforming device to move the upper mold downwards, the food preservation film is covered onto the inner wall of the container. However, because the food preservation film remains taut throughout the movement, it is subjected to forces from different directions when the upper mold moves the film downwards and covers the inner wall of the container. This continuous tension causes excessive stress in certain areas during bending, deformation, and contact with the container's inner wall, making the film more prone to tearing due to the inability to withstand the excessive tension. Utility Model Content

[0005] The purpose of this utility model application is to provide a film covering device for a food preservation container, which can prevent the food preservation film from being torn by setting an adjustment component.

[0006] To address the problems of existing technologies, this utility model application provides a film-coating device for a food preservation container, comprising: a machine body; a station switching component disposed on the top of the machine body and capable of switching the position of the container; a film-coating component disposed on the top of the machine body and on the back of the station switching component; two sets of adjusting components disposed on both sides of the top of the machine body; and two sets of roller assemblies disposed on both sides of the machine body. Each adjusting component includes an adjusting roller capable of moving up and down and contacting the bottom surface of the food preservation film. When the food preservation film is pressed down to cover the container, the adjusting roller can move downward.

[0007] Preferably, the adjusting assembly further includes connecting blocks disposed on both sides of the adjusting roller, and the adjusting assembly further includes a guide rod vertically disposed on the machine body, with the connecting blocks slidably connected to the guide rod, and the adjusting assembly further includes a support member for supporting the guide rod.

[0008] Preferably, the adjustment assembly further includes a spring sleeved on the guide rod and providing elastic force to the adjustment roller, one end of the spring being connected to the connecting block and the other end of the spring being connected to the machine body.

[0009] Preferably, the reel assembly includes a connecting frame mounted on the side of the machine body, and a reel body is rotatably disposed inside the connecting frame. The reel assembly also includes a rotary drive component mounted on the connecting frame for driving the reel body to rotate.

[0010] Preferably, the roll assembly further includes a guide roller rotatably mounted on the connecting frame and used to guide the plastic wrap.

[0011] Preferably, the workstation switching component includes a rotating disk that can be rotatably mounted on the machine body, and a plurality of fixtures for placing containers are evenly fixed on the top of the rotating disk.

[0012] Preferably, the film-coating assembly includes an upper mold that can move up and down and press the plastic wrap into the container. The upper mold has a cavity inside. The sides and bottom of the upper mold are provided with several through slots. The top of the upper mold is also provided with a heater for heating air. The top of the upper mold is also provided with a fan that can introduce air into the upper mold. The top of the upper mold is also provided with a lifting plate. The film-coating assembly also includes a fixed plate provided on the machine body. The fixed plate is also provided with a second telescopic drive for driving the lifting plate and the upper mold to move up and down.

[0013] Preferably, the upper mold is further provided with a film cutting assembly capable of removing excess film around the container. The film cutting assembly is provided in four sets on the upper mold. The upper mold includes a film cutting blade located at the bottom of the upper mold and capable of moving up and down. The top of the upper mold is also provided with a first telescopic drive member for driving the film cutting blade to move up and down. The film cutting blade is also provided with a slide rod that slides with the upper mold.

[0014] The advantages of this utility model application compared to the prior art are:

[0015] In the food preservation container coating device disclosed in this application, two sets of adjusting components are arranged at the bottom of the food preservation film. These adjusting components include adjusting rollers capable of vertical movement. In the initial stage of the coating operation, the adjusting rollers are positioned such that the food preservation film is higher than the container to be coated, while the guide rollers are lower. This height difference arrangement lays the foundation for the subsequent coating process. When the upper mold begins to move downwards, the food preservation film is gradually pressed into the container under pressure. During this process, the food preservation film exerts a pulling force on the adjusting rollers, causing them to move downwards. As the adjusting rollers move downwards, the effective length of the food preservation film increases accordingly, effectively preventing the film from being torn due to excessive stretching, ensuring the smooth progress of the coating process and the integrity of the film. Furthermore, to further improve the adhesion between the food preservation film and the inner wall of the container, through-grooves are provided on the sides and bottom of the upper mold, and a heater is also installed inside the upper mold. Under the action of a fan, external air is drawn into the upper mold, heated by the heater, and then evenly sprayed onto the food preservation film through the through-grooves. When heated, the plastic wrap adheres tightly to the inner wall of the container, significantly improving the quality and stability of the coating and providing a reliable technical guarantee for the production of food preservation containers. Attached Figure Description

[0016] Figure 1 This is a first three-dimensional structural schematic diagram of a film-coating device for a food preservation container according to this utility model application.

[0017] Figure 2 This is a second three-dimensional structural schematic diagram of a film-coating device for a food preservation container according to this utility model application.

[0018] Figure 3 This is a three-dimensional structural diagram of the station switching component and the film cutting component of a film covering device for a food preservation container according to this utility model application.

[0019] Figure 4 This utility model application relates to a film-coating device for a food preservation container. Figure 3 Enlarged structural diagram at point A in the middle.

[0020] Figure 5 This is a three-dimensional structural diagram of the adjusting component and the rolling wheel component of a film-coating device for a food preservation container according to this utility model application.

[0021] Figure 6 This utility model application relates to a film-coating device for a food preservation container. Figure 5 Enlarged structural diagram at point B.

[0022] The components in the diagram are labeled as follows: 1. Machine body; 2. Station switching assembly; 21. Rotary disk; 22. Fixture; 3. Film coating assembly; 31. Upper mold; 311. Through groove; 32. Film cutting assembly; 321. First telescopic drive component; 322. Film cutting knife; 323. Slide rod; 33. Lifting plate; 34. Second telescopic drive component; 35. Fan; 4. Adjustment assembly; 41. Adjustment roller; 411. Connecting block; 42. Support component; 43. Guide rod; 431. Spring; 5. Roller assembly; 51. Connecting frame; 52. Roller body; 53. Rotation drive component; 54. Guide roller. Detailed Implementation

[0023] To further understand the features, technical means, and specific objectives and functions achieved by this utility model application, the following detailed description of this utility model application is provided in conjunction with the accompanying drawings and specific embodiments.

[0024] Reference Figures 1-6 As shown, this utility model application provides a film covering device for a food preservation container, including: a machine body 1; a work position switching component 2, which is disposed on the top of the machine body 1 and can switch the position of the container; a film covering component 3, which is disposed on the top of the machine body 1 and on the back of the work position switching component 2; an adjustment component 4, which has two sets and is respectively disposed on both sides of the top of the machine body 1; and a roller assembly 5, which has two sets and is respectively disposed on both sides of the machine body 1; each adjustment component 4 includes an adjustment roller 41 that can move up and down and can contact the bottom surface of the food preservation film. When the food preservation film is pressed down to cover the container, the adjustment roller 41 can move downward.

[0025] When the film-coating device for food preservation containers is in operation, the container to be coated is first placed on the station switching component 2. The station switching component 2 is activated, moving the container to the film-coating station. At this time, the roller assembly 5 is divided into a winding assembly and an unwinding assembly. The unwinding assembly pulls the food preservation film from the winding assembly and moves the film to the bottom of the film-coating assembly 3. The film-coating assembly 3 is activated, pressing the food preservation film down to cover the container. At the same time, as the food preservation film is pressed down, the adjusting roller 41 moves downward to prevent the food preservation film from being torn. When one container is finished being coated, the station switching component 2 is activated again, moving the container to the film-coating station, and moving the next container to be coated to the film-coating station, repeating the above film-coating process, thereby achieving continuous and efficient film-coating operations for multiple food preservation containers.

[0026] The adjusting assembly 4 also includes connecting blocks 411 disposed on both sides of the adjusting roller 41, and a guide rod 43 vertically disposed on the machine body 1, with the connecting blocks 411 slidably connected to the guide rod 43. The adjusting assembly 4 also includes a support member 42 for supporting the guide rod 43. The adjusting assembly 4 also includes a spring 431 sleeved on the guide rod 43 and providing elastic force to the adjusting roller 41, with one end of the spring 431 connected to the connecting block 411 and the other end of the spring 431 connected to the machine body 1.

[0027] During the film coating process of the food preservation container, when the film is pressed down onto the container, it exerts downward pressure on the adjusting roller 41. Since the connecting blocks 411 on both sides of the adjusting roller 41 are slidably connected to the guide rod 43 vertically mounted on the machine body 1, the adjusting roller 41 moves downward along the guide rod 43. During this downward movement, the spring 431, sleeved on the guide rod 43, is compressed. One end of the spring 431 is connected to the connecting block 411, and the other end is connected to the machine body 1, thus generating an upward elastic force. This elastic force acts on the adjusting roller 41, ensuring that the adjusting roller 41 remains in contact with the bottom surface of the film. In this way, the adjusting assembly 4 ensures that the film remains flat and covers the container surface during the coating process, improving the coating quality.

[0028] The roll assembly 5 includes a connecting frame 51 mounted on the side of the machine body 1, and a roll body 52 is rotatably disposed inside the connecting frame 51. The roll assembly 5 also includes a rotary drive member 53 mounted on the connecting frame 51 for driving the roll body 52 to rotate. The roll assembly 5 also includes a guide roller 54 rotatably disposed on the connecting frame 51 for guiding the plastic wrap.

[0029] When the food preservation container coating device is working, the rotary drive 53 is activated, providing rotational power to the roll body 52. ​​Driven by the rotary drive 53, the roll body 52 begins to rotate, and the food preservation film wound on the roll body 52 unfolds accordingly. The unfolded food preservation film passes through the guide roller 54, which guides the food preservation film through its own rotation, changing the conveying direction of the food preservation film and ensuring that it is conveyed to the coating assembly 3 along the correct path.

[0030] The workstation switching assembly 2 includes a rotating disk 21 that can be rotatably mounted on the machine body 1, and a number of fixtures 22 for placing containers are evenly fixed on the top of the rotating disk 21.

[0031] When the food preservation container coating device is working, containers to be coated are placed sequentially on the fixtures 22 on top of the rotating disk 21. When a workstation switch is required, the rotating disk 21 starts to rotate. Since the fixtures 22 are fixed on the rotating disk 21, the containers rotate with the rotating disk 21. As the rotating disk 21 continues to rotate, the fixtures 22 with containers will sequentially reach the coating station. At the coating station, the coating component 3 performs the coating operation on the arriving containers. After a container is coated, the rotating disk 21 continues to rotate, moving the container out of the coating station, and simultaneously moving the next fixture 22 with a container to be coated to the coating station, ready for the next coating operation. By rotating the rotating disk 21 to drive the fixtures 22 and containers, automatic workstation switching is achieved, allowing multiple containers to be coated sequentially and orderly, ensuring the continuity and efficiency of the entire coating process.

[0032] The film-coating assembly 3 includes an upper mold 31 that can move up and down and press the plastic wrap into the container. The upper mold 31 has a cavity inside. Several through slots 311 are provided on the side and bottom surfaces of the upper mold 31. A heater for heating air is also provided on the top of the upper mold 31. A fan 35 for introducing air into the upper mold 31 is also provided on the top of the upper mold 31. A lifting plate 33 is also provided on the top of the upper mold 31. The film-coating assembly 3 also includes a fixed plate provided on the body 1. A second telescopic drive member 34 for driving the lifting plate 33 and the upper mold 31 to move up and down is also provided on the fixed plate.

[0033] After the upper mold 31 presses the plastic wrap into the container, the fan 35 starts, introducing outside air into the cavity inside the upper mold 31. At the same time, the heater starts working, heating the air in the cavity. The hot air flows out through the grooves 311 on the side and bottom of the upper mold 31, acting evenly on the plastic wrap, causing it to soften and adhere tightly to the inner wall of the container.

[0034] The upper mold 31 is also provided with a film cutting assembly 32 that can cut off the excess film around the container. There are four sets of film cutting assemblies 32 on the upper mold 31. The upper mold 31 includes a film cutting blade 322 that is located at the bottom of the upper mold 31 and can move up and down. The top of the upper mold 31 is also provided with a first telescopic drive member 321 for driving the film cutting blade 322 to move up and down. The film cutting blade 322 is also provided with a slide rod 323 that slides with the upper mold 31.

[0035] After the upper mold 31 presses the plastic wrap into the container and completes the basic covering action, the film-cutting assembly 32 begins to work. The first telescopic drive 321 activates, driving the film-cutting blade 322 to move downwards. Because the film-cutting blade 322 is equipped with a slide bar 323 that slides with the upper mold 31, guided by the slide bar 323, the film-cutting blade 322 can move downwards in a straight line, accurately contacting the excess plastic wrap around the container. As the film-cutting blade 322 continues to move downwards, it cuts off the excess plastic wrap. After completing the cutting operation, the first telescopic drive 321 reverses its operation, driving the film-cutting blade 322 upwards. Guided by the slide bar 323, the film-cutting blade 322 returns to its initial position, awaiting the next cutting operation. Through the coordinated work of the four film-cutting assemblies 32, excess plastic wrap around the container can be efficiently removed.

[0036] The above embodiments only illustrate one or more implementation methods of this utility model application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model application, and these all fall within the protection scope of this utility model application. Therefore, the protection scope of this utility model application should be determined by the appended claims.

Claims

1. A film covering device for a fresh-keeping container, characterized by: include: Body (1); The workstation switching component (2) is located on the top of the machine body (1) and can switch the position of the container; The film coating assembly (3) is located on the top of the machine body (1) and on the back of the workstation switching assembly (2); The adjustment assembly (4) has two sets and is respectively located on both sides of the top of the body (1); The reel assembly (5) has two sets and is respectively arranged on both sides of the body (1); Each adjustment component (4) includes an adjustment roller (41) that can move up and down and can contact the bottom surface of the plastic wrap. The adjustment roller (41) can move downward when the plastic wrap is pressed down to cover the container.

2. The film coating device for a fresh-keeping container according to claim 1, characterized in that: The adjustment assembly (4) further includes connecting blocks (411) disposed on both sides of the adjustment roller (41), the adjustment assembly (4) further includes a guide rod (43) vertically disposed on the machine body (1), and the connecting blocks (411) are slidably connected to the guide rod (43), the adjustment assembly (4) further includes a support member (42) for supporting the guide rod (43).

3. The film coating apparatus for a fresh-keeping container according to claim 2, characterized in that: The adjustment assembly (4) also includes a spring (431) sleeved on the guide rod (43) and providing elastic force to the adjustment roller (41). One end of the spring (431) is connected to the connecting block (411), and the other end of the spring (431) is connected to the machine body (1).

4. The film coating device for a fresh-keeping container according to claim 1, characterized in that: The reel assembly (5) includes a connecting frame (51) mounted on the side of the machine body (1), and a drum body (52) is rotatably disposed inside the connecting frame (51). The reel assembly (5) also includes a rotary drive (53) mounted on the connecting frame (51) and used to drive the drum body (52) to rotate.

5. The film coating apparatus for a fresh-keeping container according to claim 4, characterized in that: The roll assembly (5) also includes a guide roller (54) that is rotatably mounted on the connecting frame (51) and is used to guide the plastic wrap.

6. The film-coating device for a food preservation container according to claim 1, characterized in that: The workstation switching component (2) includes a rotating disk (21) that can be rotatably mounted on the machine body (1), and a number of fixtures (22) for placing containers are evenly fixed on the top of the rotating disk (21).

7. The film coating apparatus for a fresh-keeping container according to claim 1, characterized in that: The film-coating assembly (3) includes an upper mold (31) that can move up and down and press the plastic wrap into the container. The upper mold (31) has a cavity inside. The sides and bottom of the upper mold (31) are provided with several through slots (311). The top of the upper mold (31) is also provided with a heater for heating air. The top of the upper mold (31) is also provided with a fan (35) that can pass air into the upper mold (31). The top of the upper mold (31) is also provided with a lifting plate (33). The film-coating assembly (3) also includes a fixed plate provided on the body (1). The fixed plate is also provided with a second telescopic drive (34) for driving the lifting plate (33) and the upper mold (31) to move up and down.

8. The film coating apparatus for a fresh-keeping container according to claim 7, characterized in that: The upper mold (31) is also provided with a film cutting assembly (32) capable of cutting off excess film around the container. The film cutting assembly (32) is provided in four sets on the upper mold (31). The upper mold (31) includes a film cutting blade (322) located at the bottom of the upper mold (31) and capable of moving up and down. The top of the upper mold (31) is also provided with a first telescopic drive member (321) for driving the film cutting blade (322) to move up and down. The film cutting blade (322) is also provided with a slide rod (323) that slides with the upper mold (31).

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