Vacuum skin packaging machine

Abstract

The utility model discloses a vacuum skin packaging machine which comprises a machine frame and a placing frame placed on the machine frame, a net plate is arranged in the placing frame, a rolled thin film is installed on one side of the machine frame through a supporting frame, and two hinged film covering frames are arranged on the side, away from the machine frame, of the net plate. A heating lamp is connected to the side, close to the film covering frames, of the rack through a fixing frame, fixing clamping pieces arranged at the positions, away from the hinged ends, of the two film covering frames are further included, and a limiting assembly used for limiting a film is arranged on the side, close to the sucking pump, of the two film covering frames; the other one of the two film covering frames is provided with a wrinkle removing assembly used for removing wrinkles on the film. Through the arrangement of the limiting assembly and the wrinkle removing assembly, the risk that the thin film in the film covering frame is wrinkled due to the fact that the thin film is pulled unevenly is reduced, and then the quality of vacuum skin packaging of products is improved.

Description

Technical Field

[0001] This utility model relates to the field of packaging machine technology, specifically a vacuum skin packaging machine. Background Technology

[0002] Vacuum skin packaging machines heat and soften skin packaging film, then use vacuum suction to shape the skin film according to the product and stick it to the surface of the packaging box. After packaging, the product is tightly wrapped and bound between the skin film and the packaging box. This not only provides a better three-dimensional effect and visual display, but also has the characteristics of food preservation, quality preservation, color preservation, shape preservation, and taste preservation.

[0003] When using a vacuum skin packaging machine, operators need to manually install the film into the laminating frame. Since the laminating frame consists of two hinged frames, when the film passes between the two frames, the operator needs to use one hand to pull the film while using the other hand to close the two frames. This uneven pulling can easily cause wrinkles in the film inside the laminating frame. Consequently, when the film inside the laminating frame is heated, the wrinkles cause uneven heating in certain areas, affecting the adhesion between the film and the product, thus reducing the packaging quality and sealing of the product.

[0004] Therefore, there is an urgent need for a vacuum skin packaging machine to solve the above problems. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vacuum skin packaging machine, comprising a frame and a placement frame placed on the frame. A mesh plate is provided within the placement frame. A roll-shaped film is mounted on one side of the frame via a support frame. Two hinged film-coating frames are provided on the side of the mesh plate away from the frame. A heating lamp is connected to the side of the frame near the film-coating frames via a fixing frame. The machine also includes fixing clips located on the two film-coating frames away from the hinge ends. The two fixing clips are located away from the film. Two symmetrically arranged push rod motors are provided on the inner wall of the frame. The two push rod motors are connected to one of the two film-coating frames near the frame via push rods. An air pump is provided inside the frame. The air pump is connected to the placement frame via an air pipe. One of the two film-coating frames near the air pump is provided with a limiting component for limiting the film's position. The other of the two film-coating frames is provided with a wrinkle-removing component for removing wrinkles from the film.

[0006] The limiting component includes two symmetrically arranged L-shaped plates fixedly connected to the side of the film-coating frame away from the film. The two L-shaped plates are connected to the limiting plate by an extrusion component on the side of the film-coating frame.

[0007] The two limiting plates have an inclined surface on the side near the heating lamp.

[0008] The extrusion assembly includes an extrusion tube fixedly connected to the side of the L-shaped plate near the limiting plate. An extrusion rod is slidably connected to the extrusion tube. One end of the extrusion rod is connected to the limiting plate. An extrusion plate is fixedly connected to one end of the extrusion rod located in the extrusion tube. A first spring is fixedly connected to the end of the extrusion plate away from the extrusion rod. The other end of the first spring is connected to the bottom wall of the extrusion tube.

[0009] The wrinkle removal component includes four symmetrically arranged fixing holes on the side of the film-coating frame away from the heating lamp. Rotating plates are rotatably connected to the four fixing holes. Two of the four rotating plates are arranged in a figure-eight shape, and a U-shaped plate is fixedly connected to the opposite end. Wrinkle removal rollers are connected to the four U-shaped plates through rotating shafts. The film-coating frame is provided with a return force component for returning the four wrinkle removal rollers.

[0010] The return assembly includes a T-shaped rod rotatably connected to the side of the film-coating frame away from the placement frame. One end of the T-shaped rod is connected to the inner wall of the fixing hole. The rotating plate is connected to the T-shaped rod. A torsion spring is sleeved on the side wall of the T-shaped rod. The two ends of the torsion spring are respectively connected to the film-coating frame and the side wall of the T-shaped rod.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention, through the setting of a limiting component, achieves the limiting of the film under the squeezing action of the extrusion component, thereby freeing the operator's hands to fasten the two laminating frames. During the fastening process of the two laminating frames, the four corners of the film are squeezed and stretched under the wrinkle-removing action of the four sets of wrinkle-removing components, thereby reducing the risk of wrinkles in the film inside the laminating frame due to uneven stretching of the film, thus reducing the probability of uneven heating of the film when heated, and thus improving the quality of vacuum skin packaging of products. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the frame of this utility model;

[0015] Figure 3 This is a schematic diagram of the heating of the film by lifting the film-coating frame according to this utility model;

[0016] Figure 4 This is a schematic diagram showing the location and internal structure of the wrinkle-removing component of this utility model;

[0017] Figure 5 This is a schematic diagram of the limiting component of this utility model;

[0018] Figure 6 for Figure 4 Enlarged view of point A in the middle.

[0019] In the diagram: 101, frame; 102, placement frame; 103, screen plate; 104, film; 105, laminating frame; 106, heating lamp; 2, fixing clip; 3, push rod motor; 4, vacuum pump; 5, air pipe; 601, L-shaped plate; 602, limiting plate; 603, inclined plane; 701, extrusion tube; 702, extrusion rod; 703, extrusion plate; 704, first spring; 801, fixing hole; 802, rotating plate; 803, U-shaped plate; 804, wrinkle removal roller; 901, T-shaped rod; 902, torsion spring. Detailed Implementation

[0020] 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.

[0021] Example 1

[0022] Please see Figures 1-6 The illustrated vacuum skin packaging machine includes a frame 101 and a placement frame 102 placed on the frame 101. A mesh plate 103 is provided inside the placement frame 102. A roll-shaped film 104 is mounted on one side of the frame 101 via a support frame. Two hinged covering frames 105 are provided on the side of the mesh plate 103 away from the frame 101. A heating lamp 106 is connected to the side of the frame 101 near the covering frames 105 via a fixing frame. The machine also includes fixing clips 2 located on the two covering frames 105 away from the hinge ends. The card 2 is positioned away from the film 104. The inner wall of the frame 101 is provided with two push rod motors 3 arranged symmetrically. The two push rod motors 3 are connected to one of the two film-coating frames 105 near the frame 101 via push rods. The frame 101 is provided with an air pump 4. The air pump 4 is connected to the placement frame 102 via an air pipe 5. One of the two film-coating frames 105 near the air pump 4 is provided with a limiting component for limiting the film 104. The other of the two film-coating frames 105 is provided with a wrinkle-removing component for removing wrinkles from the film 104.

[0023] The limiting component includes two symmetrically arranged L-shaped plates 601 fixedly connected to the side of the film frame 105 away from the film 104. The two L-shaped plates 601 are connected to a limiting plate 602 by an extrusion component on the side of the film frame 105.

[0024] It should be noted that the limiting component, under the squeezing action of the extrusion component, limits the film 104, freeing the operator's hands to fasten the two laminating frames 105. During the fastening process of the two laminating frames 105, the four corners of the film 104 are squeezed and stretched by the wrinkle-removing components, thereby reducing the risk of wrinkles in the film 104 inside the laminating frame 105 due to uneven stretching. This reduces the probability of uneven heating of the film 104 when heated, thus improving the quality of vacuum skin packaging of the product.

[0025] It is worth noting that the specific structure and working principle of vacuum skin packaging machines are already known to those in the field, and will not be elaborated upon here.

[0026] Please see Figure 4 and Figure 5 The two limiting plates 602 in the figure have inclined surfaces 603 on the side near the heating lamp 106;

[0027] It should be noted that the inclined surface 603 is used to guide the insertion of the film 104 between the limiting plate 602 and the film-covering frame 105.

[0028] Please see Figure 4 and Figure 5 The extrusion assembly shown in the figure includes an extrusion tube 701 fixedly connected to the side of the L-shaped plate 601 near the limiting plate 602. An extrusion rod 702 is slidably connected to the extrusion tube 701. One end of the extrusion rod 702 is connected to the limiting plate 602. An extrusion plate 703 is fixedly connected to one end of the extrusion rod 702 located in the extrusion tube 701. A first spring 704 is fixedly connected to one end of the extrusion plate 703 away from the extrusion rod 702. The other end of the first spring 704 is connected to the bottom wall of the extrusion tube 701.

[0029] It should be noted here that by setting the extrusion component, the surface of the limiting plate 602 abuts against the film 104, thereby improving the fixing effect on one end of the film 104.

[0030] Working principle: When packaging products, the product is first placed on a tray, and then the tray is placed in the placement tube 102. After the product is placed in the placement frame 102, the film 104 can be pulled to pass between the two film frames 105, and one end of the film 104 is pulled to one side of the fixing clip 2.

[0031] When the film 104 is pulled close to the fixing clip 2, one end of the film 104 can be inserted between the limiting plate 602 and the film-covering frame 105 under the guidance of the inclined surface 603. At this time, under the elastic action of the extrusion component, the limiting plate 602 will be pushed to abut against the surface of the film 104, thereby limiting the film 104. At this time, the operator can free their hands to fasten the two film-covering frames 105. During the fastening process of the two film-covering frames 105, the four corners of the film 104 will be squeezed and stretched under the wrinkle removal action of the four sets of wrinkle removal components, thereby reducing the risk of wrinkles in the film 104 inside the film-covering frame 105 due to uneven pulling of the film 104. This reduces the probability of uneven heating of the film 104 when heated, thereby improving the quality and sealing of the product packaging.

[0032] After the film 104 is installed into the film-coating frame 105, the two push rod motors 3 can be used to move the film-coating frame 105 closer to the heating lamp 106. After the film-coating frame 105 is at an appropriate distance from the heating lamp 106, the heating lamp 106 is turned on to preheat the film 104. After preheating, the push rod motors 3 are used again to move the heated film closer to the placement frame 102. When the heated film 104 comes into contact with the end face of the placement frame 104, the vacuum pump 4 can be started. The vacuum suction force is used to make the heated and softened film 104 tightly adhere to the surface of the product and the tray, thereby forming a skin packaging for the product.

[0033] Example 2

[0034] Please see Figure 4 and Figure 6 This embodiment further illustrates Example 1. The wrinkle removal component shown in the figure includes four symmetrically arranged fixing holes 801 on the side of the film-coating frame 105 away from the heating lamp 106. The four fixing holes 801 are rotatably connected to rotating plates 802. The two opposite rotating plates 802 are arranged in a figure-eight shape, and a U-shaped plate 803 is fixedly connected to the end that is far away from each other. Wrinkle removal rollers 804 are connected to the four U-shaped plates 803 through rotating shafts. The film-coating frame 105 is provided with a return component for returning the four wrinkle removal rollers 804.

[0035] It should be noted here that: by setting up the wrinkle removal component, when the two film frames 105 are closed, the film frame 105 near the heating lamp 106 can be rotated to drive the closing operation of the film frame 105. In addition, as the upper film frame 105 rotates closer to the lower film frame 105, the four wrinkle removal rollers 804 will be moved closer to the film 104 simultaneously.

[0036] As the upper coating frame 105 continues to rotate, when the two wrinkle-removing rollers 804 located at the hinge point abut against the film 104, under the squeezing and pushing force and the support of the lower coating frame 105, the two wrinkle-removing rollers 804 will move away from each other. During the movement of the two wrinkle-removing rollers 804 away from each other, they will rotate on the surface of the film 104, thereby squeezing and stretching the film 104. When the two wrinkle-removing rollers 804 near the fixing clip 2 abut against the film 104, they will also squeeze and stretch the film 104 under the same principle. Thus, under the squeezing and stretching action of the four sets of wrinkle-removing rollers 804, the four corners of the film 104 are stretched and wrinkled, thereby reducing the risk of wrinkles appearing on the film 104 within the coating frame 105.

[0037] Please see Figure 4 and Figure 6 The pullback assembly shown in the figure includes a T-shaped rod 901 rotatably connected to the side of the film-covering frame 105 away from the placement frame 102. One end of the T-shaped rod 901 is connected to the inner wall of the fixing hole 801. The rotating plate 802 is connected to the T-shaped rod 901. A torsion spring 902 is sleeved on the side wall of the T-shaped rod 901. The two ends of the torsion spring 902 are respectively connected to the film-covering frame 105 and the side wall of the T-shaped rod 901.

[0038] It should be noted here that: by setting up the return component, while resetting the wrinkle removal roller 804, the wrinkle removal roller 804 can react with the surface of the film 104 when it is subjected to pressure, thereby achieving the stretching of the film 104.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A vacuum skin packaging machine, comprising: The frame (101) and the placement frame (102) placed on the frame (101) are provided with a mesh plate (103) inside the placement frame (102). A roll-shaped film (104) is installed on one side of the frame (101) through a support frame. Two hinged film-coating frames (105) are provided on the side of the mesh plate (103) away from the frame (101). A heating lamp (106) is connected to the side of the frame (101) near the film-coating frames (105) through a fixing frame. Its characteristic is that it further includes: Fixing clips (2) are provided on the two laminating frames (105) away from the hinge end. The two fixing clips (2) are located away from the film (104). The inner wall of the frame (101) is provided with two push rod motors (3) arranged symmetrically. The two push rod motors (3) are connected to one of the two laminating frames (105) near the frame (101) through push rods. The frame (101) is provided with an air pump (4). The air pump (4) is connected to the placement frame (102) through an air pipe (5). One of the two laminating frames (105) near the air pump (4) is provided with a limiting component for limiting the film (104). The other of the two laminating frames (105) is provided with a wrinkle-removing component for removing wrinkles from the film (104).

2. The vacuum skin packaging machine according to claim 1, characterized in that: The limiting component includes two symmetrically arranged L-shaped plates (601) fixedly connected to the side of the film-coating frame (105) away from the film (104), and the two L-shaped plates (601) are connected to a limiting plate (602) by an extrusion component on the side of the film-coating frame (105).

3. A vacuum skin packaging machine according to claim 2, characterized in that: The two limiting plates (602) have a slope (603) on the side near the heating lamp (106).

4. A vacuum skin packaging machine according to claim 3, characterized in that: The extrusion assembly includes an extrusion tube (701) fixedly connected to the side of the L-shaped plate (601) near the limiting plate (602). An extrusion rod (702) is slidably connected to the extrusion tube (701). One end of the extrusion rod (702) is connected to the limiting plate (602). An extrusion plate (703) is fixedly connected to one end of the extrusion rod (702) located on the extrusion tube (701). A first spring (704) is fixedly connected to one end of the extrusion plate (703) away from the extrusion rod (702). The other end of the first spring (704) is connected to the bottom wall of the extrusion tube (701).

5. A vacuum skin packaging machine according to claim 4, characterized in that: The wrinkle-removing component includes four symmetrically arranged fixing holes (801) on the side of the film-coating frame (105) away from the heating lamp (106). The four fixing holes (801) are rotatably connected to rotating plates (802). Two of the four rotating plates (802) are arranged in a figure-eight shape, and a U-shaped plate (803) is fixedly connected to the ends that are far apart from each other. Wrinkle-removing rollers (804) are connected to the four U-shaped plates (803) through rotating shafts. The film-coating frame (105) is provided with a return force component for returning the four wrinkle-removing rollers (804).

6. A vacuum skin packaging machine according to claim 5, characterized in that: The return assembly includes a T-shaped rod (901) rotatably connected to the side of the film-coating frame (105) away from the placement frame (102). One end of the T-shaped rod (901) is connected to the inner wall of the fixing hole (801). The rotating plate (802) is connected to the T-shaped rod (901). A torsion spring (902) is sleeved on the side wall of the T-shaped rod (901). The two ends of the torsion spring (902) are respectively connected to the side wall of the film-coating frame (105) and the side wall of the T-shaped rod (901).

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