Sealing device of film packaging machine and film packaging machine

Abstract

The utility model discloses a sealing device of film packaging machine and film packaging machine, including hot cutter mechanism, also including guide rail, spacing subassembly and drive mechanism, hot cutter mechanism includes setting up the upper knife subassembly and lower knife subassembly that are opposite to each other, spacing subassembly is used for limiting the displacement distance of upper knife subassembly and lower knife subassembly, and drive mechanism is used for driving the guide rail. The motion trails of the upper cutter assembly and the lower cutter assembly are limited by the guide rail, and the upper cutter assembly and the lower cutter assembly are mutually and uniformly pressed under the joint cooperation of the driving mechanism and the limiting assembly, so that the upper cutter assembly and the lower cutter assembly can be tightly attached and are gapless during pressing, and therefore, all seals are heat-sealed, and the sealing efficiency is improved. The device is particularly suitable for the situation that the sealing length of the upper cutter assembly and the lower cutter assembly is large.

Description

Technical Field

[0001] The utility model relates to the technical field of film packaging machines, in particular to a sealing device of a film packaging machine and a film packaging machine. Background Art

[0002] Film packaging machines are often used to wrap a layer of transparent film on the outer surface of products to make the outer packaging of the products more beautiful, and are mainly applied to fields such as electronic products, food, cosmetics, and medical supplies.

[0003] At present, the upper hot cutting knife and the lower hot cutting knife of the sealing device of the film packaging machine are respectively pressed against each other under the driving mechanism formed by the cooperation of the air cylinder, the sliding rod and the guide sleeve, that is, the air cylinder drives the sliding rod to rise and fall in the guide sleeve to drive the upper hot cutting knife or the lower hot cutting knife fixed on the sliding rod to make corresponding movements. However, due to the relatively large lengths of the upper hot cutting knife and the lower hot cutting knife themselves, the sealing length is also relatively large. When pressed together, due to the stroke difference, the contact surfaces between the two hot cutting knives are prone to tilt and gaps appear, that is, the heat sealing uniformity at different positions is relatively poor, and further local heat sealing of the film sealing is not completed. Summary of the Utility Model

[0004] Therefore, to solve the above problems, the utility model provides a sealing device of a film packaging machine and a film packaging machine, which can ensure that the upper knife assembly and the lower knife assembly are closely attached and have no gaps when pressed together, thereby ensuring that the entire sealing is heat-sealed, and is particularly suitable for the scenario where the sealing lengths of the upper knife assembly and the lower knife assembly are relatively large.

[0005] To achieve the above object, the technical solution provided by the utility model is as follows:

[0006] The utility model provides a sealing device of a film packaging machine, which includes a hot cutting knife mechanism, and also includes a guide rail, a limiting component and a driving mechanism; the hot cutting knife mechanism includes an upper knife assembly and a lower knife assembly arranged oppositely; the limiting component is used to limit the moving distances of the upper knife assembly and the lower knife assembly; the movement tracks of the upper knife assembly and the lower knife assembly are limited by the guide rail, and under the common cooperation of the driving mechanism and the limiting component, the upper knife assembly and the lower knife assembly are uniformly pressed against each other.

[0007] Furthermore, the guide rail is arranged to be able to be raised and lowered and slid; the driving mechanism includes a driver; the limiting assembly includes a rocker arm fixedly connected to the rotating shaft of the driver and a first connecting rod and a second connecting rod hinged at both ends of the rocker arm; the upper knife assembly is fixedly connected to the guide rail and form a fixed end between each other; the first connecting rod is hinged to one end of the guide rail away from the upper knife assembly and form a hinged end between each other; the second connecting rod is hinged to the lower knife assembly; the lower knife assembly is slidably connected to the guide rail; the rotating shaft of the driver drives the rocker arm to rotate, so as to drive the first connecting rod to rise and fall, and then drives the hinged end to rise and fall, and at the same time drives the guide rail to rise and fall, so as to drive the upper knife assembly to rise and fall.

[0008] Furthermore, the lower knife assembly is fixedly equipped with a slider, the second connecting rod is hinged to the slider, the slider is slidably assembled on the guide rail, and the slider is located between the fixed end and the hinged end.

[0009] Furthermore, the first connecting rod and the second connecting rod are set to be of equal length.

[0010] Furthermore, the first connecting rod and the second connecting rod are detachable.

[0011] Furthermore, the guide rail is equipped with a frame, and the guide rail can be slidably assembled on the frame.

[0012] Furthermore, the number of guide rails is 3, wherein the first guide rail and the second guide rail are arranged horizontally, and the second guide rail and the third guide rail are arranged laterally perpendicular to the horizontal direction to form an L-shaped arrangement to provide stable support for the hot cutting knife mechanism; the upper knife assembly includes an upper horizontal sealing knife and an upper lateral sealing knife connected to each other, and the lower knife assembly includes a lower horizontal sealing knife and a lower lateral sealing knife connected to each other.

[0013] The utility model provides a film packaging machine, which at least comprises the sealing device of the film packaging machine mentioned above.

[0014] The technical solution provided by the utility model has the following beneficial effects:

[0015] The movement trajectories of the upper knife assembly and the lower knife assembly are limited by the guide rail and the driving mechanism and the limit assembly cooperate with each other, so that the contact surfaces of the upper knife assembly and the lower knife assembly are tightly fitted and have no gap when pressed together, so as to ensure uniform pressing with each other, and then ensure that the seal is fully heat-sealed, which is particularly suitable for the situation where the sealing length of the upper knife assembly and the lower knife assembly is large. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1The figure shows a schematic structural diagram of a sealing device of a film packaging machine in the first embodiment;

[0017] Figure 2 Shown Figure 1 A magnified schematic diagram of area A in the middle;

[0018] Figure 3 The figure shows the appearance of the sealing device of the film packaging machine in the first embodiment. DETAILED DESCRIPTION

[0019] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0020] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0021] Embodiment 1

[0022] Reference Figures 1 to 3 As shown, embodiment 1 provides a sealing device of a film packaging machine (hereinafter referred to as the sealing device), which is used for sealing the film of the product to be packaged. The sealing device includes a hot cutter mechanism, and also includes a guide rail, a limit assembly 5 and a driving mechanism. The hot cutter mechanism includes an upper knife assembly 1 and a lower knife assembly 2 that are relatively arranged. The limit assembly 5 is used to limit the moving distance of the upper knife assembly 1 and the lower knife assembly 2. The movement trajectory of the upper knife assembly 1 and the lower knife assembly 2 is limited by the guide rail, and under the cooperation of the driving mechanism and the limit assembly 5, the upper knife assembly 1 and the lower knife assembly 2 are evenly pressed against each other.

[0023] In this embodiment, the driving mechanism includes a driver 4. For example, the driver 4 is a motor. The limiting assembly 5 includes a rocker arm 51 fixedly connected to the rotating shaft of the driver 4 and a first connecting rod 52 and a second connecting rod 53 hinged at both ends of the rocker arm 51, and the first connecting rod 52 and the second connecting rod 53 are set to be of equal length.

[0024] The upper knife assembly 1 is fixedly connected to the upper end of the guide rail and forms a fixed end 34 therebetween. The first connecting rod 52 is hinged to the lower end of the guide rail away from the upper knife assembly 1 and forms a hinged end 35 therebetween.

[0025] The second connecting rod 53 is hinged to the lower knife assembly 2, and the lower knife assembly 2 is slidably connected to the guide rail, that is, the lower knife assembly 2 is fixedly equipped with a slider 6, the second connecting rod 53 is hinged to the slider 6, the slider 6 is slidably assembled on the guide rail, and the slider 6 is located between the fixed end 34 and the hinged end 35.

[0026] The guide rail is arranged to be liftable and slidable, that is, the guide rail is provided with a frame 7, and the guide rail is slidably assembled on the frame 7.

[0027] As Figure 2 shown, the first connecting rod 52 and the swing rod 51 are hinged to form a first hinge point 81, the first connecting rod 52 and the guide rail are hinged to form a second hinge point 82, the second connecting rod 53 and the swing rod 51 are hinged to form a third hinge point 83, and the second connecting rod 53 and the slider 6 are hinged to form a fourth hinge point 84.

[0028] When the rotating shaft of the driver 4 drives the swing rod 51 to rotate, it synchronously drives one end of the first connecting rod 52 to rotate around the first hinge point 81, the other end to rotate around the second hinge point 82, and drives one end of the second connecting rod 53 to rotate around the third hinge point 83, and the other end to rotate around the fourth hinge point 84. Then, relying on the same length of the first connecting rod 52 and the second connecting rod 53, it is ensured that the moving distances of the second hinge point 82 and the fourth hinge point 84 in the vertical direction are equal, so as to ensure that the contact surfaces between the upper knife assembly 1 and the lower knife assembly 2 can always be parallel to each other within the preset spacing range, and then gradually approach until they are closely fitted and have no gap.

[0029] Among them, the rotating shaft of the driver 4 drives the swing rod 51 to rotate, so as to drive the first connecting rod 52 to rise and fall, and then drive the hinged end 35 to rise and fall, and at the same time drive the guide rail to rise and fall, so as to drive the upper knife assembly 1 to rise and fall.

[0030] When the second hinge point 82 and the fourth hinge point 84 rise and fall, the fixed end 34, the hinged end 35 and the guide rail form an integral body and rise and fall and slide on the frame 7 together. At the same time, the slider 6 makes corresponding slides on the guide rail (such as sliding upward or downward) to cooperate with the upper knife assembly 1 and the lower knife assembly 2 to move away from or close to each other.

[0031] Through the movement trajectories of the upper knife assembly 1 and the lower knife assembly 2 being restricted by the guide rail and the common cooperation of the driving mechanism and the limiting component 5, the contact surfaces of the upper knife assembly 1 and the lower knife assembly 2 are closely fitted and have no gap when pressed, so as to ensure uniform pressing or the uniformity of the pressing force meets the production specification requirements, and then ensure that all the seals are heat-sealed, especially suitable for the scenario where the sealing length of the upper knife assembly 1 and the lower knife assembly 2 is relatively large.

[0032] Of course, in other embodiments, one of the upper knife assembly 1 and the lower knife assembly 2 is fixedly arranged, and the other is slidably connected to the guide rail, and uniform pressing is achieved through the cooperation of the limiting component 5.

[0033] In another preferred embodiment, the number of guide rails is 3, wherein the first guide rail and the second guide rail are arranged horizontally in the left and right directions, and the second guide rail and the third guide rail are arranged laterally perpendicular to the horizontal direction, and the lateral direction is parallel to the front and rear directions to form an L-shaped arrangement to provide stable support for the hot cutting knife mechanism, the upper knife assembly 1 includes an upper horizontal sealing knife and an upper lateral sealing knife connected to each other, and the lower knife assembly 2 includes a lower horizontal sealing knife and a lower lateral sealing knife connected to each other.

[0034] More specifically, the side of the frame 7 is also equipped with a clamping assembly for clamping the film.

[0035] In this specific embodiment, the number of drivers 4 is 1, the number of rocker arms 51 is 3, and they are respectively matched with corresponding first connecting rods 52 and second connecting rods 53, and two of the rocker arms 51 are connected to the driver 4 through a transmission belt assembly, and the third rocker arm 51 is directly fixed to the rotating shaft of the driver 4.

[0036] The three guide rails are respectively equipped with corresponding sliders 6, and the three guide rails are the first guide rail 31, the second guide rail 32 and the third guide rail 33, and the second guide rail 32 is between the first guide rail 31 and the third guide rail 33, the first guide rail 31 and the second guide rail 32 are arranged horizontally, and the second guide rail 32 and the third guide rail 33 are arranged laterally.

[0037] The upper transverse sealing knife and the upper lateral sealing knife are rigidly connected and arranged in an L shape, and the lower transverse sealing knife and the lower lateral sealing knife are rigidly connected and arranged in an L shape.

[0038] The left end of the upper transverse sealing knife facing away from the upper lateral sealing knife is fixed to the first guide rail 31 through a connector, and the front and rear ends of the upper lateral sealing knife are fixed to the second guide rail 32 and the third guide rail 33 through connectors respectively.

[0039] The left end of the lower horizontal sealing knife facing away from the upper lateral sealing knife is fixed to the slider 6 corresponding to the first guide rail 31, and the front and rear ends of the lower lateral sealing knife are respectively fixed to the sliders 6 corresponding to the second guide rail 32 and the third guide rail 33, and the three sliders 6 are respectively hinged to the corresponding second connecting rods 53, and the three first connecting rods 52 are respectively hinged to the lower ends of the first guide rail 31, the second guide rail 32 and the third guide rail 33.

[0040] The same driver 4 synchronously drives the limit assembly 5, the upper knife assembly 1 and the lower knife assembly 2 to make corresponding movements, so as to achieve simultaneous heat sealing of the transverse sealing and the lateral sealing of the film.

[0041] Further preferably, the first connecting rod 52 and the second connecting rod 53 are detachably arranged, and the sizes of different products to be coated can be matched by replacing the first connecting rod 52 and the second connecting rod 53 of different lengths.

[0042] Example 2

[0043] Example 2 provides a film packaging machine, which at least includes the sealing device of the film packaging machine in Example 1.

[0044] Although the present utility model is specifically shown and introduced in combination with the preferred embodiments, those skilled in the art should understand that various changes can be made to the present utility model in terms of form and details without departing from the spirit and scope of the present utility model defined by the appended claims, and all of them fall within the protection scope of the present utility model.

Claims

1. A sealing device for a film packaging machine, including a hot cutting knife mechanism, characterized in that: It also includes guide rails, limiter components and drive mechanisms; The hot cutting knife mechanism comprises an upper knife assembly and a lower knife assembly which are arranged opposite to each other; The limiting assembly is used to limit the moving distance of the upper knife assembly and the lower knife assembly; The motion tracks of the upper knife assembly and the lower knife assembly are limited by the guide rail, and the upper knife assembly and the lower knife assembly are pressed evenly against each other under the cooperation of the driving mechanism and the limiting assembly; The driving mechanism includes a driver; the limiting assembly includes a swing rod fixedly connected to the rotating shaft of the driver and a first connecting rod and a second connecting rod hinged at both ends of the swing rod; the guide rail is arranged to be able to rise and fall and slide; the upper knife assembly is fixedly connected to the guide rail and forms a fixed end between them; the first connecting rod is hinged to one end of the guide rail away from the upper knife assembly and forms a hinged end between them; The number of guide rails is 3, wherein the first guide rail and the second guide rail are arranged transversely, and the second guide rail and the third guide rail are arranged laterally perpendicular to the transverse direction to form an L-shaped arrangement to provide stable support for the hot cutter mechanism.

2. The sealing device of the film packaging machine according to claim 1, wherein: The second connecting rod is hinged to the lower knife assembly; the lower knife assembly is slidably connected to the guide rail; the rotating shaft of the driver drives the swing rod to rotate, so as to drive the first connecting rod to rise and fall, thereby driving the hinged end to rise and fall, and at the same time driving the guide rail to rise and fall, so as to drive the upper knife assembly to rise and fall.

3. The sealing device of the film packaging machine according to claim 2, characterized in that: The lower knife assembly is fixedly equipped with a slider, the second connecting rod is hinged to the slider, the slider is slidably assembled on the guide rail, and the slider is located between the fixed end and the hinged end.

4. The sealing device of the film packaging machine according to claim 2 or 3, characterized in that: The first connecting rod and the second connecting rod are arranged to be of equal length.

5. The sealing device of the film packaging machine according to claim 2 or 3, characterized in that: The first connecting rod and the second connecting rod are detachably arranged.

6. The sealing device of the film packaging machine according to claim 2 or 3, characterized in that: The guide rail is equipped with a frame, and the guide rail can be slidably assembled on the frame.

7. The sealing device of the film packaging machine according to claim 6, characterized in that: The upper knife assembly comprises an upper transverse sealing knife and an upper lateral sealing knife connected to each other, and the lower knife assembly comprises a lower transverse sealing knife and a lower lateral sealing knife connected to each other.

8. A film wrapping machine, characterized in that: At least comprising the sealing device of the film packaging machine described in any one of claims 1-7.

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