Multifunctional skin machine

Abstract

The utility model relates to a multifunctional body pasting machine which comprises a machine base, a lower die base and a vacuum cover, the vacuum cover is located above the lower die base, a die cavity used for containing a supporting box is formed in the lower die base, a guide rail is arranged on the machine base, the lower die base is arranged on the guide rail in a front-back sliding mode, and a first lifting power source is installed on the machine base. The first lifting power source can drive the vacuum cover to move up and down, vacuumizing holes are formed in the mold cavity and the vacuum cover, and the vacuumizing holes are communicated with the vacuum pump; the film sealing device is characterized in that a film sealing mechanism is installed on the vacuum cover and comprises a second lifting power source, a lifting plate, a heat sealing mold and an annular film cutter, the heat sealing mold and the annular film cutter are located below the lifting plate, and the annular film cutter is located on the periphery of the heat sealing mold; the second lifting power source is connected with the lifting plate, the annular film cutter is installed on the lifting plate, and the heat sealing mold is connected to the lifting plate through a limiting connecting rod in an up-down movable mode. The multifunctional body pasting machine not only can realize inner body pasting film sealing, but also can realize outer covering film sealing.

Description

Technical Field

[0001] The utility model relates to a packaging machine, in particular to a skin packaging machine. Background Art

[0002] A skin packaging machine is a packaging machine that places food in a tray (usually food that needs to be preserved fresh, and the tray is a PP tray), heats the skin film, and then tightly adheres to the food in the tray under the action of vacuum and seals with the inner surface of the tray. The skin packaging machine has the characteristics of flexible packaging method, high efficiency, being suitable for fragile or deformed products, being able to effectively protect the product quality, extend the product life, and low packaging cost. Existing skin packaging machines generally include a film feeding assembly, a cutting knife assembly, an upper die assembly, and a lower die assembly; for example, the utility model patent with the patent number 202122287025.2 discloses a skin packaging machine. For example, the utility model patent with the patent number 202122288617.6 discloses a film feeding and supplying mechanism for a skin packaging machine. It can be seen from the prior art that existing skin packaging machines only attach the film to the food, with only one layer of sealing film for skin packaging. If such packaged food is placed together with other items, this packaged food may be squeezed and scratched by other items, resulting in the film being damaged and affecting the packaging effect. In addition, for some foods with strong odors (such as durians), even with only one layer of sealing film for skin packaging, the odor will still escape, affecting normal sales in some places. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the utility model innovatively provides a multifunctional skin packaging machine that can achieve the effect of double film sealing.

[0004] This multifunctional skin-packing machine includes a machine base, a lower die base and a vacuum hood. The vacuum hood is located above the lower die base. The lower die base is provided with a die cavity for placing a tray. The machine base is provided with a guide rail, and the lower die base is slidably arranged on the guide rail in the front-back direction. A first lifting power source is installed on the machine base, and the first lifting power source can drive the vacuum hood to move up and down. When the vacuum hood descends, it can cover the die cavity. Vacuum holes are provided both in the die cavity and on the vacuum hood, and the vacuum holes are connected to a vacuum pump. It is characterized in that: A film sealing mechanism is installed on the vacuum hood. The film sealing mechanism includes a second lifting power source, a lifting plate, a heat sealing die and an annular film cutter. The heat sealing die and the annular film cutter are located below the lifting plate, and the annular film cutter is located on the periphery of the heat sealing die. The second lifting power source is installed on the upper part outside the vacuum hood, and the lifting plate, the heat sealing die and the annular film cutter are all installed inside the vacuum hood. The second lifting power source is connected to the lifting plate, the annular film cutter is installed on the lifting plate, the heat sealing die is connected to the lifting plate through a limiting connecting rod so as to be movable up and down, a spring is sleeved on the limiting connecting rod, one end of the spring acts on the upper part of the heat sealing die, and the other end of the spring acts on the bottom of the lifting plate. When the heat sealing die is not stressed, the bottom heat sealing edge of the heat sealing die is lower than the lower edge of the blade of the annular film cutter.

[0005] A film supply device is installed on one side of the machine base, and a waste edge collecting device is installed on the other side of the machine base.

[0006] A film detection device is installed on one side of the waste edge collecting device. The film detection device includes a support, a photoelectric eye, a lifting roller, a guide roller, a gear and a rack. The support has a guide groove extending up and down. Both ends of the lifting roller are slidably arranged in the guide groove up and down. Gears are installed at both ends of the lifting roller, the rack is installed on the support up and down, and the gears at both ends of the lifting roller are respectively engaged with the rack. The photoelectric eye is located at the middle position of the support.

[0007] The first lifting power source is a first lifting cylinder, and the telescopic rod of the first lifting cylinder is connected to the vacuum hood.

[0008] The second lifting power source is a second lifting cylinder, and the telescopic rod of the second lifting cylinder is connected to the lifting plate.

[0009] The lower die base is in transmission connection with a pushing power source, and the pushing power source can drive the lower die base to move back and forth on the guide rail.

[0010] A support ring for supporting the edge of the tray is arranged in the die cavity.

[0011] According to a multifunctional skin-packing machine provided by the present invention, not only can inner skin-packing film sealing be realized, but also outer covering film sealing can be realized, and the packaging effect is significantly improved. Description of the Drawings

[0012] Figure 1 is a perspective view of the present utility model;

[0013] Figure 2 is a partial view of the present utility model Figure 1 ;

[0014] Figure 3 is a partial view of the present utility model Figure 2 ;

[0015] Figure 4 is a partial view of the present utility model Figure 3 ;

[0016] Figure 5 is a perspective view of the film detection device;

[0017] Figure 6 is a side cross-sectional view of the film thickness of the tray; Detailed implementation method

[0018] As Figure 6 shown, food B is placed in tray A. First, the food B is completely covered by the first layer of film A1 (abbreviated as inner body-fitting film sealing), and the edge of the first layer of film A1 is attached to the inner side surface of tray A; then, the second layer of film A2 is covered above tray A (abbreviated as outer covering film sealing), and the edge of the second layer of film A2 is heat-sealed on the edge of tray A.

[0019] As Figure 1 shown, such a body-fitting machine can perform inner body-fitting film sealing on tray A and can also perform outer covering film sealing. The body-fitting machine includes a machine base 1, a lower die base 2 and a vacuum cover 3. The vacuum cover 3 is located above the lower die base 2. A die cavity 20 for placing tray A is provided on the lower die base 2, and tray A is placed in the die cavity 20; as Figure 1 shown, a guide rail 10 is provided on the machine base 1, and the lower die base 2 is slidably arranged on the guide rail 10 in the front and back directions; a first lifting power source 7 is installed on the machine base 1, and the first lifting power source 7 can drive the vacuum cover 3 to move up and down. When the vacuum cover 3 descends, it can cover the die cavity 20. Vacuum holes are provided in both the die cavity 20 and the vacuum cover 3, and the vacuum holes are connected to a vacuum pump. As Figure 2 and Figure 3 shown, a film sealing mechanism is installed on the vacuum cover 3. The film sealing mechanism includes a second lifting power source 6, a lifting plate 60, a heat-sealing die 4 and an annular film cutter 5. The heat-sealing die 4 and the annular film cutter 5 are located below the lifting plate 60. As Figure 4As shown, the annular film cutter 5 is located on the periphery of the heat-sealing die 4; the second lifting power source 6 is installed on the upper part outside the vacuum hood 3. The lifting plate 60, the heat-sealing die 4 and the annular film cutter 5 are all installed inside the vacuum hood 3. The second lifting power source 6 is connected to the lifting plate 60. The annular film cutter 5 is installed on the lifting plate 60. The heat-sealing die 4 is connected to the lifting plate 60 in a vertically movable manner through a limiting connecting rod 40 (a limiting block is provided at the top of the limiting connecting rod 40, and the limiting block is located above the lifting plate 60. The limiting block is hung on the lifting plate 60 to prevent the heat-sealing die 4 from falling). A spring (not shown) is sleeved on the limiting connecting rod 40. One end of the spring acts on the upper part of the heat-sealing die 4, and the other end of the spring acts on the bottom of the lifting plate 60. When the heat-sealing die 4 is not stressed, the bottom heat-sealing edge of the heat-sealing die 4 is lower than the lower cutting edge of the annular film cutter 5. When the bottom of the heat-sealing die 4 is stressed, the heat-sealing die 4 moves upward. When it is no longer stressed, the spring drives the heat-sealing die 4 to reset and move downward.

[0020] The working principle of this blister packaging machine is as follows: At the beginning, the tray A is placed in the cavity 20 of the lower mold base 2, and then the lower mold base 2 is pushed along the guide rail 10 to directly below the vacuum hood 3. The film passes through directly below the vacuum hood 3. First, for the inner blister packaging film sealing, the vacuum hood 3 evacuates the air to make the film adsorbed on the heat-sealing die 4. The heat-sealing die 4 heats and softens the film. Then the first lifting power source 7 drives the vacuum hood 3 to move downward, so that the vacuum hood 3 covers the lower mold base 2 to form a vacuum chamber. Then the vacuum hood 3 releases the air, and the cavity 20 evacuates the air. In this way, the film is sucked downward and adheres to the food B. At the same time, the edge of the film adheres to the inner side surface of the tray A. Then the second lifting power source 6 drives the lifting plate 60 to move downward. The heat-sealing die 4 presses the film against the edge of the tray A. When the second lifting power source 6 continues to drive the lifting plate 60 to move downward, the heat-sealing die 4 moves upward. When the position of the heat-sealing die 4 is higher than the position of the annular film cutter 5, the annular film cutter 5 cuts the film, thus completing the inner blister packaging film sealing of the first layer of film A1. Then, for the outer covering film sealing, another part of the continuous film comes to below the vacuum hood 3. The second lifting power source 6 drives the lifting plate 60 to move downward. The heat-sealing die 4 presses the film against the edge of the tray A, and the heat-sealing die 4 presses the film against the edge of the tray A, thereby heat-sealing the film on the edge of the tray A. When the second lifting power source 6 continues to drive the lifting plate 60 to move downward, the heat-sealing die 4 moves upward. When the position of the heat-sealing die 4 is higher than the position of the annular film cutter 5, the annular film cutter 5 cuts the film, thus completing the outer covering film sealing of the second layer of film A2. With this structure, not only can the inner blister packaging film sealing be realized, but also the outer covering film sealing can be realized, significantly improving the freshness preservation and odor prevention effects of the food.

[0021] As Figure 1As shown, a film supply device 9 is installed on one side of the machine base 1, and a waste edge collecting device 90 is installed on the other side of the machine base 1. The film supply device 9 includes a film roll, which can provide film, and the waste edge collecting device 90 can reel up the waste edge left after the film is cut. The film provided by the film supply device 9 passes through the bottom of the vacuum cover 3 and then winds around the waste edge collecting device 90, which can realize continuous film supply.

[0022] In order to detect whether the film is too tight or too loose, Figure 1 As shown, a film detection device 8 is installed on one side of the waste edge collecting device 90. Figure 5 As shown, the film detection device 8 includes a support 80, a photoelectric eye 86, a lifting roller 81, a guide roller 85, a gear 82 and a rack 83. The support 80 is provided with a guide groove 84 extending up and down. Both ends of the lifting roller 81 are movably arranged in the guide groove 84 up and down. Gears 82 are installed at both ends of the lifting roller 81. The rack 83 is installed up and down on the support 80. The gears 82 at both ends of the lifting roller 81 are respectively engaged with the rack 83 (the rack 83 can make the two ends of the lifting roller 81 always keep horizontal, so that the lifting roller 81 can move up and down stably), and the photoelectric eye 86 is located in the middle position of the support 80. The film is guided by the guide roller 85 and wrapped around the lifting roller 81. When the photoelectric eye 86 detects that the lifting roller 81 is located in the middle position of the support 80, the surface film is just tensioned and can work normally. When the film is too loose, the lifting roller 81 cannot provide support for the lifting roller 81, and the lifting roller 81 will drop due to its own weight. When the photoelectric eye 86 cannot detect the lifting roller 81, an alarm will be issued or the machine will be shut down directly. Of course, when the film is too tight, the film will provide excessive support to the lifting roller 81, and the lifting roller 81 will move up. When the photoelectric eye 86 cannot detect the lifting roller 81, an alarm will be issued or the machine will be shut down directly.

[0023] like Figure 3 As shown, the first lifting power source 7 is a first lifting cylinder, and the telescopic rod of the first lifting cylinder is connected to the vacuum cover 3. In addition, the second lifting power source 6 is a second lifting cylinder, and the telescopic rod of the second lifting cylinder is connected to the lifting plate 60. Of course, the first lifting power source 7 and the second lifting power source 6 can also be motors.

[0024] In order to automatically push the lower die base 2 to move on the guide rail 10 , the lower die base 2 is transmission-connected to a pushing power source 21 . The lower die base 2 can move forward and backward on the guide rail 10 through the driving of the pushing power source 21 .

[0025] In order to enable the heat sealing mold 4 to press on the edge of the tray box, a support ring 22 for supporting the edge of the tray box A is provided in the mold cavity 20. After the tray box A is placed in the mold cavity 20, the support ring 22 is supported under the edge of the tray box A, so that the heat sealing mold 4 can act on the edge of the tray box A, so that the film and the edge of the tray box can be tightly attached together.

Claims

1. A multifunctional body-sticking machine, comprising a machine base (1), a lower mold base (2) and a vacuum cover (3), wherein the vacuum cover (3) is located above the lower mold base (2), and the lower mold base (2) is provided with a mold cavity (20) for placing a tray, the machine base (1) is provided with a guide rail (10), and the lower mold base (2) can be slid forward and backward on the guide rail (10), and the machine base (1) is installed with a first lifting power source (7), and the first lifting power source (7) can drive the vacuum cover (3) to move up and down, and the vacuum cover (3) can be lowered to cover the mold cavity (20), and vacuum holes are provided in the mold cavity (20) and on the vacuum cover (3), and the vacuum holes are connected to a vacuum pump; characterized in that: A film sealing mechanism is installed on the vacuum cover (3), and the film sealing mechanism comprises a second lifting power source (6), a lifting plate (60), a heat sealing mold (4) and an annular film cutter (5), wherein the heat sealing mold (4) and the annular film cutter (5) are located below the lifting plate (60), and the annular film cutter (5) is located outside the heat sealing mold (4); the second lifting power source (6) is installed on the upper part of the outer surface of the vacuum cover (3), and the lifting plate (60), the heat sealing mold (4) and the annular film cutter (5) are all installed inside the vacuum cover (3). The second lifting power source (6) is connected to the lifting plate (60), the annular film cutter (5) is mounted on the lifting plate (60), and the heat sealing mold (4) is movably connected to the lifting plate (60) via a limit connecting rod (40). A spring is sleeved on the limit connecting rod (40), one end of the spring acts on the upper part of the heat sealing mold (4), and the other end of the spring acts on the bottom of the lifting plate (60). When the heat sealing mold (4) is not subjected to force, the bottom heat sealing edge of the heat sealing mold (4) is lower than the lower blade of the annular film cutter (5).

2. A multifunctional body-fitting machine according to claim 1, characterized in that: A film supply device (9) is installed on one side of the machine base (1), and a waste edge collection device (90) is installed on the other side of the machine base (1).

3. A multifunctional body-fitting machine according to claim 2, characterized in that: A film detection device (8) is installed on one side of the waste edge collecting device (90). The film detection device (8) includes a support (80), a photoelectric eye (86), a lifting roller (81), a guide roller (85), a gear (82) and a rack (83). The support (80) is provided with a guide groove (84) extending up and down. Both ends of the lifting roller (81) are movably arranged in the guide groove (84) up and down. Both ends of the lifting roller (81) are equipped with gears (82). The rack (83) is installed up and down on the support (80). The gears (82) at both ends of the lifting roller (81) are respectively meshed with the rack (83). The photoelectric eye (86) is located in the middle of the support (80).

4. The multifunctional body-fitting machine according to claim 1, characterized in that: The first lifting power source (7) is a first lifting cylinder, and the telescopic rod of the first lifting cylinder is connected to the vacuum cover (3).

5. The multifunctional body-fitting machine according to claim 1, characterized in that: The second lifting power source (6) is a second lifting cylinder, and the telescopic rod of the second lifting cylinder is connected to the lifting plate (60).

6. The multifunctional body-fitting machine according to claim 1, characterized in that: The lower die base (2) is in transmission connection with a pushing power source (21), and the pushing power source (21) can drive the lower die base (2) to move forward and backward on the guide rail (10).

7. The multifunctional body-fitting machine according to claim 1, characterized in that: A support ring (22) for supporting the edge of the tray is provided in the mold cavity (20).

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