Preservative film cutting device for food packaging

Abstract

The utility model discloses a preservative film cutting device for food packaging, and belongs to the technical field of food packaging. A preservative film cutting device for food packaging comprises a protection box, a supporting shaft is arranged in the protection box, a preservative film body is installed on the supporting shaft, a film outlet is formed in one side of the protection box, an upper clamping block and a lower clamping block which can slide relatively are arranged on the upper side and the lower side of the film outlet, and a cutter assembly is arranged on the outer wall of the protection box. According to the preservative film cutting device for food packaging, the clamping mechanism is triggered in a linkage mode through the cutting action, the automatic operation of'sealing once cutting 'is achieved, the upper clamping block and the lower clamping block automatically clamp the end of a preservative film after cutting is completed and retract into the protection box, the problem that the end of the preservative film is exposed after being cut by a traditional device is effectively solved, and the service life of the preservative film is prolonged. The completely closed storage mode prevents dust and impurities from polluting the cut end of the preservative film, and prevents the end part of the preservative film from being affected with damp and adhered due to exposure.

Description

Technical Field

[0001] This utility model relates to the field of food packaging technology, and more specifically, to a food packaging film cutting device. Background Technology

[0002] Traditional plastic wrap cutting devices generally have the problem of exposed plastic wrap ends after cutting, leading to the following defects: the exposed plastic wrap ends are prone to absorbing dust and impurities, affecting food hygiene and safety; the plastic wrap ends are prone to getting damp and sticking due to changes in environmental humidity, affecting future use; existing sealing solutions mostly use an additional cover structure, which is cumbersome to operate and has poor sealing effect; the cutting and sealing actions are separated, requiring users to perform multiple operation steps, which is inconvenient to use. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a food packaging film cutting device to solve the above-mentioned deficiencies.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0005] This utility model discloses a food packaging cling film cutting device, including a protective box, a support shaft inside the protective box, a cling film body mounted on the support shaft, a film outlet on one side of the protective box, an upper clamping block and a lower clamping block that can slide relative to each other on the upper and lower sides of the film outlet, a cutting blade assembly on the outer wall of the protective box, and sliding grooves on the upper and lower sides of the film outlet, with a guide rod and a first spring inside the sliding grooves. The upper clamping block and the lower clamping block are slidably connected to the guide rod through a slider.

[0006] Preferably, the cutter assembly includes a cutter holder, a square rod, a cutter body, and a second spring. The second spring is sleeved on the square rod, the lower end of the square rod is connected to the cutter holder, the lower end of the cutter holder is provided with the cutter body, the upper end of the square rod is provided with a pressure plate, and the second spring provides a reset force.

[0007] Preferably, the cutter holder is provided with a first pushing surface and the upper clamping block is provided with a corresponding second pushing surface. After the two pushing surfaces come into contact, the downward pressure of the cutter can be converted into the lateral movement force of the clamping block.

[0008] Preferably, the protective box is provided with a blade groove and a limiting member that cooperate with the cutter body, and the cutter body is provided with a positioning hole that matches the limiting member.

[0009] Preferably, the limiting component includes a positioning block, a pull rod, a pull ring, and a third spring. The positioning block is placed inside the protective box, the pull rod passes through the side wall of the protective box, the third spring is sleeved on the position of the pull rod inside the protective box, and a pull ring is provided on the pull rod outside the protective box.

[0010] Preferably, the upper clamping block and the lower clamping block are provided with limiting strips at their ends, and the limiting strips are staggered to achieve linkage.

[0011] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0012] This utility model discloses a food packaging cling film cutting device. The cutting action triggers a clamping mechanism, achieving automated "one cut, one seal" operation. After cutting, the upper and lower clamping blocks automatically clamp the end of the cling film and retract it into the protective box, effectively avoiding the problem of exposed cling film ends after cutting with traditional devices. The completely sealed storage method prevents dust and impurities from contaminating the cut end of the cling film, avoids moisture and sticking due to exposure, and keeps the cut end clean and hygienic, meeting food packaging hygiene requirements. By adjusting the pressing depth, continuous packaging and sealing can be selected, completing both cutting and sealing functions without additional steps, simplifying the usage process. A spring reset mechanism ensures automatic return of all components to their positions, a pushing surface linkage mechanism achieves effective force transmission and conversion, and misaligned limit strips ensure synchronous movement of the clamping blocks. Multiple limit designs guarantee precise coordination of all components. Attached Figure Description

[0013] Figure 1 This is a packaging state diagram of the food packaging cling film cutting device of this utility model;

[0014] Figure 2 This is a structural diagram showing the connection between the upper clamping block, lower clamping block, and cutter assembly of this utility model;

[0015] Figure 3 This is an exploded view of the upper clamping block and the lower clamping block of this utility model;

[0016] Figure 4 This is a diagram showing the sealed state of the food packaging cling film cutting device of this utility model;

[0017] Figure 5 This is an enlarged view of section A of this utility model.

[0018] In the diagram: 1. Protective box; 11. Support shaft; 12. Protective cover; 13. Film outlet; 131. Slide groove; 132. Guide rod; 133. First spring; 14. Knife groove; 15. Limiting component; 151. Positioning block; 152. Pull rod; 153. Pull ring; 154. Third spring; 2. Plastic wrap body; 3. Upper clamping block; 31. Slider; 32. Limiting strip; 33. Second pushing surface; 4. Lower clamping block; 5. Cutter assembly; 51. Knife holder; 511. First pushing surface; 52. Square rod; 521. Pressure plate; 53. Cutter body; 531. Positioning hole; 54. Second spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0021] Combination Figures 1-5 This utility model discloses a food packaging cling film cutting device, including a protective box 1, a support shaft 11 inside the protective box 1, a cling film body 2 sleeved on the support shaft 11, and a protective cover 12 on the upper end face of the protective box 1. By opening the protective cover 12, the cling film body 2 can be disassembled and assembled. The support shaft 11 passes through the center of the cling film body 2 and is used to support the cling film body 2, so that the cling film body 2 can rotate around the support shaft 11.

[0022] Specifically, a film outlet 13 is provided on one side of the protective box 1. The upper and lower sides of the film outlet 13 are both inclined structures. An upper clamping block 3 and a lower clamping block 4 are respectively provided on the inclined structures. Slide grooves 131 are symmetrically provided on the upper and lower sides of the film outlet 13. A guide rod 132 is fixedly connected in the slide groove 131. A first spring 133 is sleeved on the guide rod 132.

[0023] More specifically, the upper clamping block 3 and the lower clamping block 4 are attached to the side wall of the film outlet 13 near the guide rod 132. The upper clamping block 3 and the lower clamping block 4 are each provided with a slider 31 that is sleeved with the guide rod 132. The first spring 133 abuts against the slider 31. The first spring 133 pushes the slider 31, causing the upper clamping block 3 and the lower clamping block 4 to move towards the outside of the film outlet 13. During packaging, one end of the plastic wrap body 2 passes between the upper clamping block 3 and the lower clamping block 4, leaving a gap between the upper clamping block 3 and the lower clamping block 4 for the plastic wrap to pass through.

[0024] It should be noted that both the upper clamping block 3 and the lower clamping block 4 are provided with limiting strips 32 at their ends. The limiting strips 32 at both ends of the upper clamping block 3 and the lower clamping block 4 are staggered. When the upper clamping block 3 moves along the slide groove 131, the lower clamping block 4 is pushed to move in the same direction in sync through the limiting strips 32. The gap between the upper clamping block 3 and the lower clamping block 4 is reduced until the upper clamping block 3 and the lower clamping block 4 clamp the plastic wrap tightly and drive one end of the plastic wrap to move into the protective box 1, so as to prevent the end of the cut plastic wrap from being exposed and to prevent the end of the plastic wrap from getting contaminated.

[0025] In this embodiment, a fixing plate is provided on the outer wall of the protective box 1 near the membrane outlet 13. A cutter assembly 5 is installed on the fixing plate. The cutter assembly 5 includes a cutter holder 51, a square rod 52, a cutter body 53, and a second spring 54. The square rod 52 is symmetrically arranged on the upper end of the cutter holder 51. The second spring 54 is sleeved on the upper end of the square rod 52. The cutter body 53 is provided on the lower surface of the cutter holder 51.

[0026] In addition, a pressure plate 521 is fixedly connected to the upper end of the square rod 52. The second spring 54 lifts the pressure plate 521, causing the knife holder 51 and the cutter body 53 to be suspended in the air. The height of the cutter body 53 is higher than that of the plastic wrap. When the plastic wrap needs to be cut, the pressure plate 521 is pressed manually to compress the second spring 54, and the cutter body 53 moves down to cut the plastic wrap.

[0027] It should be noted that the blade holder 51 has a first pushing surface 511 on the side near the upper clamping block 3, and the upper clamping block 3 has a second pushing surface 33 on the side near the first pushing surface 511. When the blade holder 51 continues to move downward, the first pushing surface 511 contacts the second pushing surface 33, and the blade holder 51 pushes the upper clamping block 3 and the lower clamping block 4 to move inward toward the film outlet 13, thereby eliminating the gap between the upper clamping block 3 and the lower clamping block 4, clamping the plastic wrap and moving it inward. The continuous downward movement of the blade holder 51 also drives the cutting blade. As the main body 53 continues to move downward, a blade groove 14 matching the cutter body 53 is provided on the protective box 1. A limiting member 15 is provided on one side of the blade groove 14, and a positioning hole 531 is provided on one side of the cutter body 53. When the cutter body 53 is inserted into the blade groove 14, the limiting member 15 is inserted into the positioning hole 531 to fix the position of the cutter body 53. The first pushing surface 511 fits one end of the upper clamping block 3 and the lower clamping block 4 together, sealing the gap between the upper clamping block 3 and the lower clamping block 4 and protecting the plastic wrap from being exposed.

[0028] The limiting component 15 includes a positioning block 151, a pull rod 152, a pull ring 153, and a third spring 154. The positioning block 151 is placed inside the protective box 1. The pull rod 152 passes through the side wall of the protective box 1. The third spring 154 is sleeved on the position of the pull rod 152 inside the protective box 1. The pull ring 153 is provided on the outside of the protective box 1. By pulling the pull ring 153, the third spring 154 can be compressed, causing the positioning block 151 to disengage from the positioning hole 531. After the cutter body 53 is no longer fixed by the positioning block 151, the second spring 54 pushes the cutter body 53 to reset.

[0029] Working process: The user pulls out the required length of cling film from the film outlet 13, and the free end of the cling film passes through the gap between the upper clamping block 3 and the lower clamping block 4. After the food packaging is completed, the user presses the pressure plate 521 of the cutter assembly 5, and the cutter body 53 moves down to complete the cutting action. When all the food packaging is completed, the user presses the pressure plate 521, and as the cutter body 53 continues to move down, the first pushing surface 511 contacts the second pushing surface 33, pushing the upper clamping block 3 and the lower clamping block 4 to move into the box. The upper clamping block 3 and the lower clamping block 4 eliminate the gap and clamp the end of the cling film, pulling it into the protective box 1. The cutter body 53 is inserted into the blade groove 14, and at the same time, the limiting member 15 locks the cutter position. When used next time, the user pulls the pull ring 153 to release the cutter assembly 5. All parts are reset under the action of the spring, and the upper clamping block 3 and the lower clamping block 4 drive the clamped cling film to move outward from the film outlet 13 for easy film removal.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A food packaging cling film cutting device, comprising a protective box (1), characterized in that, The protective box (1) is provided with a support shaft (11), and a plastic wrap body (2) is installed on the support shaft (11). The protective box (1) has a film outlet (13) on one side. The upper and lower sides of the film outlet (13) are provided with an upper clamping block (3) and a lower clamping block (4) that can slide relative to each other. The outer wall of the protective box (1) is provided with a cutter assembly (5). The upper and lower sides of the film outlet (13) are provided with a sliding groove (131). The sliding groove (131) is provided with a guide rod (132) and a first spring (133). The upper clamping block (3) and the lower clamping block (4) are slidably connected to the guide rod (132) through a slider (31).

2. The food packaging cling film cutting device according to claim 1, characterized in that, The cutting assembly (5) includes a blade holder (51), a square rod (52), a cutting body (53), and a second spring (54). The square rod (52) is fitted with the second spring (54). The lower end of the square rod (52) is connected to the blade holder (51). The lower end of the blade holder (51) is provided with the cutting body (53). The upper end of the square rod (52) is provided with a pressure plate (521). The second spring (54) provides a reset force.

3. The food packaging cling film cutting device according to claim 2, characterized in that, The tool holder (51) is provided with a first pushing surface (511), and the upper clamping block (3) is provided with a corresponding second pushing surface (33).

4. The food packaging cling film cutting device according to claim 3, characterized in that, The protective box (1) is provided with a blade groove (14) and a limiting member (15) that cooperate with the cutter body (53). The cutter body (53) is provided with a positioning hole (531) that matches the limiting member (15).

5. The food packaging cling film cutting device according to claim 4, characterized in that, The limiting component (15) includes a positioning block (151), a pull rod (152), a pull ring (153), and a third spring (154). The positioning block (151) is placed inside the protective box (1). The pull rod (152) passes through the side wall of the protective box (1). The third spring (154) is sleeved on the position of the pull rod (152) inside the protective box (1). The pull ring (153) is provided on the outside of the protective box (1) of the pull rod (152).

6. The food packaging cling film cutting device according to claim 1, characterized in that, The upper clamping block (3) and the lower clamping block (4) are provided with limiting strips (32) at their ends, and the limiting strips (32) are misaligned to achieve linkage.

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