A packaging side film sealing mechanism and working method thereof

Abstract

The present invention provides a packaging side film sealing mechanism and a working method thereof, belonging to the technical field of packaging film sealing equipment, comprising a bottom plate (1), a side plate (2), a film pressing part (3) and a film cutting part (4), wherein the side plate (2) is vertically arranged on one side of the bottom plate (1), a support plate (21) is arranged on one side of the side plate (2), the film pressing part (3) is arranged on one side of the side plate (2), and the film cutting part (4) is arranged on one side of the side plate (2) and above the support plate (21). The packaging side film sealing mechanism has a simple structure, can directly perform side film sealing on the packaging film, can simplify the production line and operation steps, and save equipment costs; the packaging side film sealing mechanism has a simple working method, has a good side film sealing effect on the article, and is suitable for large-scale industrial promotion.

Description

Technical Field

[0001] The present invention belongs to the technical field of packaging film sealing equipment, and in particular, relates to a packaging side film sealing mechanism and a working method thereof. Background Art

[0002] Heat shrink film is used for the sale and transportation of various products. Its main function is to stabilize, cover and protect products. It has high flexibility, is not easy to break, has strong blasting resistance, strong impact resistance, strong tear resistance and strong tensile strength, and can replace box packaging. It has good transparency and a light transmittance of 80%, which can display products and promote products invisibly, while also reducing delivery errors in the logistics process. In addition, it is moisture-proof, waterproof and dust-proof, which can achieve packaging effects, beautify products and protect products. It is non-toxic, odorless and pollution-free and is an environmentally friendly packaging material. Application scope of heat shrink film: medicines, beverages, mineral water, beer, laminate flooring, palletizing, building materials, metal products, dairy products, glass bottles, industrial paper and other large equipment and items that need to be packaged.

[0003] When heat shrink film is used to cover and package items, many of them adopt a one-side sealing mode, that is, the packaging film is cut on one side of the packaged item, which is not only beautiful but also easy to operate. The heat shrink film packaging machine in the prior art often adopts a two-step operation when sealing the side of the item, that is, first cutting the film of the item covered with the packaging film, and then using an oven to heat the heat shrink film to shrink it, thereby completing the packaging operation. This operation not only has a long production line, but also has more equipment, which requires increased equipment costs. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a packaging side film sealing mechanism and a working method thereof. The packaging side film sealing mechanism has a simple structure and can directly seal the side of the packaging film, thereby simplifying the production line and operating steps and saving equipment costs. The packaging side film sealing mechanism has a simple working method and has a good side film sealing effect on articles, and is suitable for large-scale industrial promotion.

[0005] In order to achieve the above-mentioned purpose, the present invention is realized by the following technical scheme: a packaging side film sealing mechanism, comprising a bottom plate, a side plate, a film pressing part and a film cutting part, wherein the side plate is vertically arranged on one side of the bottom plate, a support plate is arranged on one side of the side plate, the film pressing part is arranged on one side of the side plate, and the film cutting part is arranged on one side of the side plate and above the support plate. After the packaging film passes through the film pressing part, the film cutting part performs a cutting and sealing operation.

[0006] Furthermore, the film pressing part includes an upper driving wheel, a lower driving wheel, an upper driven wheel, a lower driven wheel and a motor, the motor is arranged on the lower surface of the bottom plate through a fixed seat, the lower driving wheel is transmission-connected to the output end of the motor through a transmission chain, the upper driving wheel is arranged above the lower driving wheel and is meshed with the gear of the lower driving wheel, the lower driven wheel is arranged on one side of the side plate and is flush with the lower driving wheel, the upper driven wheel is arranged on one side of the side plate and is flush with the upper driving wheel, the upper driving wheel and the upper driven wheel are transmission-connected through an upper transmission belt, and the lower driving wheel and the lower driven wheel are transmission-connected through a lower transmission belt.

[0007] Furthermore, auxiliary wheels flush with each other are provided above the upper driving wheel and the upper driven wheel, and the auxiliary wheel, the upper driving wheel and the upper driven wheel are connected to each other through an upper transmission belt.

[0008] Furthermore, the film cutting part includes a cylinder, a first connecting block, a second connecting block and a cutter. The cylinder is arranged on the side opposite to the upper transmission belt of the side plate. The first connecting block is connected to the cylinder drive and arranged above the cylinder. The side of the second connecting block is connected to the side of the first connecting block through a first connecting rod. The cutter is arranged on the lower surface of the second connecting block. The support plate is provided with a first through hole and a bearing. The cutter can vertically pass through the first through hole. A heating tube is arranged in the second connecting block. The cylinder drives the first connecting block to move up and down, driving the cutter to move up and down, thereby cutting the packaging film. The heating tube can heat the cutter, causing the packaging film contacted by the cutter to shrink thermally, and automatically performing the film sealing operation.

[0009] Furthermore, a pair of buffer blocks are provided on the side of the side plate, and the film cutting part also includes a cover plate and a pressing plate. The cover plate and the pressing plate are connected at their corners by a second connecting rod. The pair of buffer blocks are respectively provided between the cover plate and the pressing plate near both ends. The second connecting rod is passed through the buffer block. The second connecting rod is provided on the lower surface section of the buffer block and is provided with a first spring. The top end of the first spring is connected to the lower surface of the buffer block, and the bottom end is passed through the pressing plate. The pressing plate is provided with a second through hole, and the cutter can vertically pass through the second through hole. When the cutter moves downward, the connecting block can press the pressing plate to move it downward, and the pressing plate can press the packaging film on the supporting plate to facilitate the cutter to cut the packaging film; the first spring can enhance the pressing effect of the pressing plate on the packaging film.

[0010] Furthermore, a clamping portion is provided on the side plate near the upper driven wheel side, and the clamping portion includes an upper clamping roller, a lower clamping roller, an upper connecting rod, a lower connecting rod and a fixing rod. The clamping portion is connected to the side surface of the side plate through a first fixing frame, the upper clamping roller is connected to the first fixing frame through an upper connecting rod, and the lower clamping roller is connected to the first fixing frame through a lower connecting rod. The upper clamping roller is arranged directly above the lower clamping roller, and the fixing rod is vertically penetrated through the upper connecting rod and the lower connecting rod in sequence. The fixing rod is arranged at the upper end of the upper connecting rod and is sleeved with a second spring on the outside. The packaging film is pressed by the upper pressing roller and the lower pressing roller, which makes it easier for the cutter to cut the packaging film, so that the packaging film can better package the articles; the distance between the upper pressing roller and the lower pressing roller can be adjusted by the upper connecting rod and the lower connecting rod, the fixing rod can further enhance the pressing effect between the upper pressing roller and the lower pressing roller, the second spring can make the fixing rod have an elastic force on the upper connecting rod to ensure the fixing effect between the upper connecting rod and the lower connecting rod, and a nut for fixing the second spring is provided on the top of the fixing rod.

[0011] Furthermore, a waste material receiving roller is provided on the side of the side plate near the lower driving wheel, and the waste material receiving roller is connected to the side of the side plate through a second fixing frame. The waste material part of the packaging film can be wound and collected, and the waste material receiving roller can be driven by an external machine to rotate automatically, or can be rotated manually to collect the material.

[0012] Furthermore, a lifting part is provided on the lower surface of the bottom plate, and the lifting part includes a connecting plate, a screw rod and a group of guide rods. The connecting plate is provided directly below the bottom plate, the top end of the screw rod is connected to the bottom plate through a nut block, the bottom end is passed through the connecting plate and connected to the connecting plate through a first connecting seat, the top end of the guide rod is connected to the bottom plate, and the bottom end is connected to the connecting plate through a second connecting seat, and the guide rod can move freely along the second connecting seat. By rotating the screw rod, the bottom plate can be moved up and down along the screw rod, thereby driving the film sealing mechanism to rise and fall as a whole, which is convenient for adjusting the film sealing operation of the object.

[0013] Furthermore, a hand wheel is provided at the bottom end of the screw rod to facilitate the rotation of the screw rod.

[0014] The present invention also provides a working method of a packaging side film sealing mechanism, using the packaging side film sealing mechanism as described above, comprising the following steps:

[0015] (1) The packaging film is pressed between the upper pressing roller and the lower pressing roller, and then passes between the upper transmission belt and the lower transmission belt. The film on the side of the packaged article is on the support plate, and the waste part is wrapped around the outside of the waste receiving roller;

[0016] (2) After the items are packaged, the cylinder is started, and the cylinder drives the cutter to move downward. The second connecting block drives the pressing plate to move downward, pressing the film, and the cutter cuts the film on the supporting plate. At the same time, since a heating tube is provided in the second connecting block, the heating tube can heat the cutter, causing the film contacted by the cutter to shrink by heat, and automatically sealing the film on the side of the packaged item.

[0017] (3) Start the motor, the motor drives the lower driving wheel to rotate through the transmission chain, the lower driving wheel drives the upper driving wheel to rotate through gear meshing, the lower driving wheel drives the lower driven wheel to rotate through the lower transmission belt, the upper driving wheel drives the upper driven wheel to rotate through the upper transmission belt, thereby driving the passing packaging film to move.

[0018] Beneficial effects: Compared with the prior art, the present invention has the following advantages: the present invention provides a packaging side film sealing mechanism and a working method thereof, the packaging side film sealing mechanism has a simple structure, can directly perform side film sealing on the packaging film, can simplify the production line and operation steps, and save equipment costs; the packaging film is pressed by the upper pressing roller and the lower pressing roller, which can facilitate the cutting of the packaging film by the cutter, so that the packaging film can better package the article; by rotating the screw rod, the bottom plate can be moved up and down along the screw rod, thereby driving the overall lifting and lowering of the film sealing mechanism, and facilitating the adjustment of the film sealing operation on the article; the working method of the packaging side film sealing mechanism is simple, the side film sealing effect of the article is good, the efficiency is high, and it is suitable for large-scale industrial promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of a packaging side film sealing mechanism according to the present invention;

[0020] Figure 2 This is a structural diagram of a packaging side film sealing mechanism according to the present invention from another perspective;

[0021] Figure 3 This is a front view of the packaging side film sealing mechanism structure of the present invention;

[0022] Figure 4 for Figure 1 A magnified view of the local structure.

[0023] In the figure: 1 bottom plate, 2 side plate, 21 support plate, 211 first through hole, 212 bearing, 3 film pressing part, 31 upper driving wheel, 32 lower driving wheel, 33 upper driven wheel, 34 lower driven wheel, 35 upper transmission belt, 36 lower transmission belt, 37 motor, 371 fixed seat, 38 transmission chain, 39 auxiliary wheel, 4 film cutting part, 41 cylinder, 42 first connecting block, 43 first connecting rod, 44 second connecting block, 441 heating pipe, 45 cutting knife, 46 buffer Punch block, 47 cover plate, 48 pressure plate, 481 second through hole, 49 second connecting rod, 491 first spring, 5 clamping part, 51 upper clamping roller, 52 lower clamping roller, 53 first fixed frame, 54 upper connecting rod, 55 lower connecting rod, 56 fixed rod, 561 second spring, 6 lifting part, 61 connecting plate, 62 screw rod, 621 hand wheel, 622 first connecting seat, 63 guide rod, 631 second connecting seat, 7 waste material receiving roller, 71 second fixed frame. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more, unless otherwise clearly specified.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] The present invention is further described with reference to the accompanying drawings and specific embodiments.

[0030] Example 1

[0031] like Figure 1-4 As shown, a packaging side film sealing mechanism includes a bottom plate 1, a side plate 2, a film pressing part 3 and a film cutting part 4, wherein the side plate 2 is vertically arranged on one side of the bottom plate 1, a support plate 21 is arranged on one side of the side plate 2, the film pressing part 3 is arranged on one side of the side plate 2, and the film cutting part 4 is arranged on one side of the side plate 2 and above the support plate 21.

[0032] Among them, the film pressing part 3 includes an upper driving wheel 31, a lower driving wheel 32, an upper driven wheel 33, a lower driven wheel 34 and a motor 37. The motor 37 is arranged on the lower surface of the bottom plate 1 through a fixed seat 371. The lower driving wheel 32 is connected to the output end of the motor 37 through a transmission chain 38. The upper driving wheel 31 is arranged above the lower driving wheel 32 and is connected to the lower driving wheel 32 by gear meshing. The lower driven wheel 34 is arranged on one side of the side plate 2 and is flush with the lower driving wheel 32. The upper driven wheel 33 is arranged on one side of the side plate 2 and is flush with the upper driving wheel 31. The upper driving wheel 31 and the upper driven wheel 33 are connected to each other through an upper transmission belt 35, and the lower driving wheel 32 and the lower driven wheel 34 are connected to each other through a lower transmission belt 36.

[0033] In addition, the film cutting part 4 includes a cylinder 41, a first connecting block 42, a second connecting block 44 and a cutter 45. The cylinder 41 is arranged on the side of the side plate 2 opposite to the upper transmission belt 35. The first connecting block 42 is driven and connected to the cylinder 41 and is arranged above the cylinder 41. The side of the second connecting block 44 is connected to the side of the first connecting block 42 through the first connecting rod 43. The cutter 45 is arranged on the lower surface of the second connecting block 44. The support plate 21 is provided with a first through hole 211 and a bearing 212. The cutter 45 can vertically pass through the first through hole 211. A heating tube 441 is provided in the second connecting block 44.

[0034] The working method of the packaging side film sealing mechanism comprises the following steps:

[0035] (1) The packaging film passes between the upper conveyor belt 35 and the lower conveyor belt 36, and the film on the side of the article to be packaged is on the support plate 21;

[0036] (2) After the items are packaged, the cylinder 41 is started, and the cylinder 41 drives the cutter 45 to move downward, and the cutter 45 cuts the film on the support plate 21. At the same time, since the second connecting block 44 is provided with a heating tube 441, the heating tube 441 can heat the cutter 45, so that the film contacted by the cutter 45 is thermally shrunk, and the film on the side of the packaged items is automatically sealed;

[0037] (3) The motor 37 is started. The motor 37 drives the lower driving wheel 32 to rotate through the transmission chain 38. The lower driving wheel 32 drives the upper driving wheel 31 to rotate through gear meshing. The lower driving wheel 32 drives the lower driven wheel 34 to rotate through the lower transmission belt 36. The upper driving wheel 31 drives the upper driven wheel 33 to rotate through the upper transmission belt 35, thereby driving the passing packaging film to move.

[0038] Example 2

[0039] like Figure 1-4 As shown, a packaging side film sealing mechanism includes a bottom plate 1, a side plate 2, a film pressing part 3 and a film cutting part 4, wherein the side plate 2 is vertically arranged on one side of the bottom plate 1, a support plate 21 is arranged on one side of the side plate 2, the film pressing part 3 is arranged on one side of the side plate 2, and the film cutting part 4 is arranged on one side of the side plate 2 and above the support plate 21.

[0040] The film pressing part 3 includes an upper driving wheel 31, a lower driving wheel 32, an upper driven wheel 33, a lower driven wheel 34 and a motor 37. The motor 37 is arranged on the lower surface of the bottom plate 1 through a fixed seat 371. The lower driving wheel 32 is connected to the output end of the motor 37 through a transmission chain 38. The upper driving wheel 31 is arranged above the lower driving wheel 32 and is connected to the lower driving wheel 32 by gear meshing. The lower driven wheel 34 is arranged on one side of the side plate 2 and is flush with the lower driving wheel 32. The upper driven wheel 33 is arranged on one side of the side plate 2 and is flush with the upper driving wheel 31. The upper driving wheel 31 is connected to the upper driven wheel 33 through an upper transmission belt 35. The lower driving wheel 32 is connected to the lower driven wheel 34 through a lower transmission belt 36. Auxiliary wheels 39 that are flush with each other are arranged above the upper driving wheel 31 and the upper driven wheel 33. The auxiliary wheels 39, the upper driving wheel 31 and the upper driven wheel 33 are connected to each other through an upper transmission belt 35.

[0041] In addition, the film cutting part 4 includes a cylinder 41, a first connecting block 42, a second connecting block 44 and a cutter 45. The cylinder 41 is arranged on the side of the side plate 2 opposite to the upper transmission belt 35. The first connecting block 42 is driven and connected to the cylinder 41 and is arranged above the cylinder 41. The side of the second connecting block 44 is connected to the side of the first connecting block 42 through the first connecting rod 43. The cutter 45 is arranged on the lower surface of the second connecting block 44. The support plate 21 is provided with a first through hole 211 and a bearing 212. The cutter 45 can vertically pass through the first through hole 211. A heating tube 441 is provided in the second connecting block 44. A pair of buffer blocks 46 are also provided on the side of the side plate 2, and the film cutting part 4 also includes a cover plate 47 and a pressure plate 48. The corners of the cover plate 47 and the pressure plate 48 are connected by a second connecting rod 49. A pair of buffer blocks 46 are respectively arranged between the cover plate 47 and the pressure plate 48 near both ends. The second connecting rod 49 is penetrated through the buffer block 46. The second connecting rod 49 is provided on the lower surface section of the buffer block 46 and a first spring 491 is provided. The top end of the first spring 491 is connected to the lower surface of the buffer block 46, and the bottom end is penetrated through the pressure plate 48. The pressure plate 48 is provided with a second through hole 481, and the cutter 45 can vertically pass through the second through hole 481.

[0042] In addition, the side plate 2 is provided with a clamping part 5 near the upper driven wheel 33, and the clamping part 5 includes an upper clamping roller 51, a lower clamping roller 52, an upper connecting rod 54, a lower connecting rod 55 and a fixing rod 56. The clamping part 5 is connected to the side of the side plate 2 through a first fixing frame 53, the upper clamping roller 51 is connected to the first fixing frame 53 through an upper connecting rod 54, and the lower clamping roller 52 is connected to the first fixing frame 53 through a lower connecting rod 55. The upper clamping roller 51 is arranged directly above the lower clamping roller 52, and the fixing rod 56 is vertically penetrated through the upper connecting rod 54 and the lower connecting rod 55 in sequence. The fixing rod 56 is arranged at the upper end of the upper connecting rod 54 and is sleeved with a second spring 561 on the outside. A waste material receiving roller 7 is provided on the side of the side plate 2 near the lower driving wheel 32, and the waste material receiving roller 7 is connected to the side of the side plate 2 through a second fixing frame 71.

[0043] Again, the bottom surface of the bottom plate 1 is further provided with a lifting part 6, and the lifting part 6 includes a connecting plate 61, a screw rod 62 and a group of guide rods 63. The connecting plate 61 is provided directly below the bottom plate 1. The top end of the screw rod 62 is connected to the bottom plate 1 through a nut block, and the bottom end is passed through the connecting plate 61 and connected to the connecting plate 61 through a first connecting seat 622. The top end of the guide rod 63 is connected to the bottom plate 1, and the bottom end is connected to the connecting plate 61 through a second connecting seat 631. The guide rod 63 can move freely along the second connecting seat 631. A hand wheel 621 is provided at the bottom end of the screw rod 62.

[0044] The working method of the packaging side film sealing mechanism comprises the following steps:

[0045] (1) The packaging film is pressed between the upper pressing roller 51 and the lower pressing roller 52, and then passes between the upper transmission belt 35 and the lower transmission belt 36. The film on the side of the packaged article is on the support plate 21, and the waste part is wound around the outside of the waste receiving roller 7;

[0046] (2) After the items are packaged, the cylinder 41 is started, and the cylinder 41 drives the cutter 45 to move downward. The second connecting block 44 drives the pressing plate 48 to move downward to press the film, and the cutter 45 cuts the film on the supporting plate 21. At the same time, since the second connecting block 44 is provided with a heating tube 441, the heating tube 441 can heat the cutter 45, so that the film contacted by the cutter 45 is heat-shrunk, and the film on the side of the packaged item is automatically sealed.

[0047] (3) The motor 37 is started. The motor 37 drives the lower driving wheel 32 to rotate through the transmission chain 38. The lower driving wheel 32 drives the upper driving wheel 31 to rotate through gear meshing. The lower driving wheel 32 drives the lower driven wheel 34 to rotate through the lower transmission belt 36. The upper driving wheel 31 drives the upper driven wheel 33 to rotate through the upper transmission belt 35, thereby driving the passing packaging film to move. The waste material is collected by the waste material collection roller 7, and the next product packaging and film sealing operation is carried out.

[0048] The above are only several embodiments of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principles of the present invention. These improvements should also be regarded as within the scope of protection of the present invention.

Claims

1. A packaging side film sealing mechanism, characterized in that: The film pressing part (3) comprises a bottom plate (1), a side plate (2), a film pressing part (3) and a film cutting part (4), wherein the side plate (2) is vertically arranged on one side of the bottom plate (1), a support plate (21) is arranged on one side of the side plate (2), the film pressing part (3) is arranged on one side of the side plate (2), and the film cutting part (4) is arranged on one side of the side plate (2) and above the support plate (21); The film pressing part (3) comprises an upper driving wheel (31), a lower driving wheel (32), an upper driven wheel (33), a lower driven wheel (34) and a motor (37); the motor (37) is arranged on the lower surface of the bottom plate (1) via a fixing seat (371); the lower driving wheel (32) is connected to the output end of the motor (37) via a transmission chain (38); the upper driving wheel (31) is arranged above the lower driving wheel (32) and is connected to the gear meshing of the lower driving wheel (32); the lower driven wheel (34) is arranged on one side of the side plate (2) and is flush with the lower driving wheel (32); the upper driven wheel (33) is arranged on one side of the side plate (2) and is flush with the upper driving wheel (31); the upper driving wheel (31) and the upper driven wheel (33) are connected to each other via an upper transmission belt (35); the lower driving wheel (32) and the lower driven wheel (34) are connected to each other via a lower transmission belt (36); The film cutting part (4) comprises a cylinder (41), a first connecting block (42), a second connecting block (44) and a cutter (45); the cylinder (41) is arranged on the side of the side plate (2) opposite to the upper transmission belt (35); the first connecting block (42) is connected to the cylinder (41) by driving and is arranged above the cylinder (41); the side surface of the second connecting block (44) is connected to the side surface of the first connecting block (42) through a first connecting rod (43); the cutter (45) is arranged on the lower surface of the second connecting block (44); the support plate (21) is provided with a first through hole (211) and a bearing (212); the cutter (45) can vertically pass through the first through hole (211); and a heating pipe (441) is arranged in the second connecting block (44); A pair of buffer blocks (46) are also provided on the side of the side plate (2), and the film cutting part (4) also includes a cover plate (47) and a pressure plate (48), and the cover plate (47) and the pressure plate (48) are connected at the corners by a second connecting rod (49), and the pair of buffer blocks (46) are respectively arranged between the cover plate (47) and the pressure plate (48) near both ends, and the second connecting rod (49) is penetrated through the buffer block (46), and the second connecting rod (49) is provided with a first spring (491) on the lower surface section of the buffer block (46), and the top end of the first spring (491) is connected to the lower surface of the buffer block (46), and the bottom end is penetrated through the pressure plate (48), and the pressure plate (48) is provided with a second through hole (481), and the cutter (45) can vertically pass through the second through hole (481); The bottom surface of the bottom plate (1) is further provided with a lifting part (6), the lifting part (6) comprising a connecting plate (61), a screw rod (62) and a group of guide rods (63), the connecting plate (61) being arranged directly below the bottom plate (1), the top end of the screw rod (62) being connected to the bottom plate (1) via a nut block, the bottom end of which is passed through the connecting plate (61) and connected to the connecting plate (61) via a first connecting seat (622), the top end of the guide rod (63) being connected to the bottom plate (1), the bottom end of which is connected to the connecting plate (61) via a second connecting seat (631), and the guide rod (63) being freely movable along the second connecting seat (631).

2. A packaging side film sealing mechanism according to claim 1, characterized in that: Auxiliary wheels (39) flush with each other are provided above the upper driving wheel (31) and the upper driven wheel (33); the auxiliary wheel (39), the upper driving wheel (31) and the upper driven wheel (33) are connected to each other by an upper transmission belt (35).

3. A packaging side film sealing mechanism according to claim 1, characterized in that: A clamping portion (5) is provided on the side of the side plate (2) close to the upper driven wheel (33), and the clamping portion (5) comprises an upper clamping roller (51), a lower clamping roller (52), an upper connecting rod (54), a lower connecting rod (55) and a fixing rod (56). The clamping portion (5) is connected to the side of the side plate (2) via a first fixing frame (53). The upper clamping roller (51) is connected to the first fixing frame (53) via an upper connecting rod (54), and the lower clamping roller (52) is connected to the first fixing frame (53) via a lower connecting rod (55). The upper clamping roller (51) is arranged directly above the lower clamping roller (52). The fixing rod (56) is vertically penetrated through the upper connecting rod (54) and the lower connecting rod (55) in sequence. The fixing rod (56) is arranged at the upper end of the upper connecting rod (54) and is sleeved with a second spring (561) on the outside.

4. A packaging side film sealing mechanism according to claim 3, characterized in that: A waste material receiving roller (7) is provided on the side surface of the side plate (2) near the lower driving wheel (32), and the waste material receiving roller (7) is connected to the side surface of the side plate (2) via a second fixing frame (71).

5. A packaging side film sealing mechanism according to claim 1, characterized in that: A hand wheel (621) is provided at the bottom end of the screw rod (62).

6. A method for operating a packaging side film sealing mechanism, using a packaging side film sealing mechanism as claimed in any one of claims 1 to 5, characterized in that: The steps include: (1) The packaging film is compressed between an upper compression roller (51) and a lower compression roller (52), and then passes between an upper transmission belt (35) and a lower transmission belt (36). The film on the side of the article to be packaged is on a support plate (21), and the waste part is wound around the outside of a waste receiving roller (7); (2) After the items are packaged, the cylinder (41) is started, the cylinder (41) drives the cutter (45) to move downward, the second connecting block (44) drives the pressing plate (48) to move downward, the film is pressed, and the cutter (45) cuts the film on the support plate (21). At the same time, since the second connecting block (44) is provided with a heating tube (441), the heating tube (441) can heat the cutter (45), so that the film contacted by the cutter (45) is thermally shrunk, and the film on the side of the packaged item is automatically sealed; (3) The motor (37) is started. The motor (37) drives the lower driving wheel (32) to rotate via the transmission chain (38). The lower driving wheel (32) drives the upper driving wheel (31) to rotate via gear meshing. The lower driving wheel (32) drives the lower driven wheel (34) to rotate via the lower transmission belt (36). The upper driving wheel (31) drives the upper driven wheel (33) to rotate via the upper transmission belt (35), thereby driving the passing packaging film to move.

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