A mechanical film cutting mechanism

Abstract

The present invention relates to the field of logistics packaging equipment, and in particular to a mechanical film cutting mechanism. The present invention provides such a mechanical film cutting mechanism, which includes a mounting frame and a fixed shaft. Baffles and guide rails are respectively provided in front and behind the fixed shaft. First, the stretch film in the finishing work is pulled apart by the baffle rod on the guide rail, and then the stretch film head in the finishing work is isolated in front of the baffle. Then, the lifting slider drives the clamping claw to move downward along the guide rail, and the clamping claw pushes the pulled apart part of the stretch film downward to make the stretch film stick together tightly. At the same time, the clamping claw pushes the isolated stretch film head downward to pass through the cutting assembly at the lower end of the baffle, and the cutting assembly cuts the stretch film head from the ring wrapping machine at one time. The mechanical film cutting mechanism of the existing ring wrapping machine solves the technical problem that after completing the cutting process of the stretch film wrapped around the surface of the goods, a long section of unfixed film head will remain, causing the film head to fall off.

Description

Technical Field

[0001] The present invention relates to the field of logistics packaging equipment, and in particular to a mechanical film cutting mechanism. Background Art

[0002] On the logistics packaging line, a ring wrapping machine is required to continuously rotate around the surface of the goods, so that the sticky stretch film is wrapped around the goods from bottom to top for packaging. The mechanical film cutting mechanism of the existing ring wrapping machine consists of three main parts: film cutting, film sweeping and film clamping. It can automatically cut the stretch film after the packaging work is completed, so that the film head of the cut stretch film remains on the outside of the goods with the stretch film. When the packaged goods need to be stored for a long time, there is often a phenomenon that the film head falls off and then causes the rest of the stretch film to fall downward. When the length of the film head falls off is long, the packaging structure of the goods will be damaged, which will not only undermine the protection effect of the stretch film on the goods, but also affect the aesthetics of the packaging of the goods. Summary of the Invention

[0003] In order to overcome the disadvantage of the mechanical film cutting mechanism of the existing annular wrapping machine that after the wrapping film wrapped around the surface of the goods is cut, a long section of unfixed film head will remain, causing the film head to fall off, the present invention provides a mechanical film cutting mechanism.

[0004] A mechanical film cutting mechanism of the present invention includes a mounting frame, a fixed shaft, a guide rail, a movable lifting ear, a lifting slider, a clamping claw, a blocking rod, a baffle and a cutting assembly; the middle part of the mounting frame is fixedly connected to the fixed shaft; the rear end of the fixed shaft is rotatably connected to the guide rail; the fixed shaft is rotatably connected to the movable lifting ear; the movable lifting ear is fixed to the guide rail; the mounting frame is rotatably connected to the adjustment cylinder; the telescopic end of the adjustment cylinder is rotatably connected to the movable lifting ear; the lifting slider is slidably connected to the guide rail; the lifting slider is fixedly connected to two telescopic cylinders; each telescopic end of the telescopic cylinder is fixedly connected to a clamping claw; the left side of the guide rail is fixedly connected to the blocking rod; the front end of the fixed shaft is rotatably connected to the baffle; the lower end of the baffle is connected to the cutting assembly; the mounting frame is rotatably connected to the rotating cylinder; the telescopic end of the rotating cylinder is rotatably connected to the baffle.

[0005] Preferably, the left end and the right end of the mounting frame are each slidably connected to a slide rail; and the mounting frame is fixedly connected to a displacement cylinder.

[0006] Preferably, the blocking rod is configured as a cylindrical structure.

[0007] Preferably, a clamping groove structure is provided at the bottom of the clamping jaw.

[0008] Preferably, the cutting assembly includes a micro cylinder, a fixed block and a cutter; the baffle is mounted with the micro cylinder; the telescopic end of the micro cylinder is fixedly connected to the fixed block; and the cutter is provided on the fixed block.

[0009] Preferably, the upper end of the cutter is configured to be inclined downward from rear to front.

[0010] The present invention describes a mechanical film cutting mechanism, in which a fixed shaft is provided on a mounting frame, and baffles and guide rails are provided in front and behind the fixed shaft respectively. First, the stretch film in the finishing work is pulled apart separately by the baffle rod on the guide rail, and then the stretch film head in the finishing work is isolated in front of the baffle. Then, the lifting slider drives the clamping claw to move downward along the guide rail, and the clamping claw pushes the pulled-apart part of the stretch film downward to be tightly adhered together. At the same time, the clamping claw pushes the isolated stretch film head downward to pass through the cutting assembly at the lower end of the baffle, and the stretch film head is cut off from the ring winding machine at one time by the cutting assembly.

[0011] The mechanical film cutting mechanism described in the present invention solves the technical problem that after the mechanical film cutting mechanism of the existing annular winding machine completes the cutting process of the winding film wrapped around the surface of the goods, a long section of unfixed film head will remain, causing the film head to fall off. In addition, the mechanical film cutting mechanism has a simple structure, is easy to manufacture and install, and has stable operation, safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of a three-dimensional structure of the present invention is described according to an embodiment;

[0013] Figure 2 A schematic diagram of the three-dimensional structure of the adjustment cylinder of the present invention is described according to an embodiment;

[0014] Figure 3 A schematic diagram of a fixed shaft three-dimensional structure of the present invention is described according to an embodiment;

[0015] Figure 4 The figure is a schematic diagram of the three-dimensional structure of the clamping jaw according to the embodiment of the present invention.

[0016] The meaning of the reference numerals in the figure: 1-mounting frame, 11-slide rail, 12-displacement cylinder, 2-fixed shaft, 3-guide rail, 31-movable lifting ear, 32-adjusting cylinder, 4-lifting slider, 41-telescopic cylinder, 42-clamping claw, 420-clamping groove, 5-stop rod, 6-baffle, 61-rotating cylinder, 7-micro cylinder, 71-fixed block, 72-cutter. DETAILED DESCRIPTION

[0017] Reference herein to an embodiment means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present invention. The appearance of such a phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0018] Example

[0019] A mechanical film cutting mechanism, such as Figures 1-4 As shown, it includes a mounting frame 1, a fixed shaft 2, a guide rail 3, a movable lifting ear 31, a lifting slider 4, a clamping claw 42, a blocking rod 5, a baffle 6 and a cutting assembly; the left and right ends of the mounting frame 1 are each slidably connected to a slide rail 11; the left and right ends of the mounting frame 1 are each bolted to a displacement cylinder 12; the middle part of the mounting frame 1 is fixedly connected to the fixed shaft 2; the rear end of the fixed shaft 2 is rotatably connected to the guide rail 3; the middle part of the fixed shaft 2 is rotatably connected to the movable lifting ear 31; the movable lifting ear 31 is fixed to the guide rail 3; the left side of the mounting frame 1 is rotatably connected to the adjustment cylinder 32 through the rotating shaft; the telescopic end of the adjustment cylinder 32 is rotatably connected to the movable Lifting ear 31; a lifting slider 4 is slidably connected to the guide rail 3; a telescopic cylinder 41 is bolted to the left and right sides of the lifting slider 4; the telescopic ends of the two telescopic cylinders 41 are each fixed with a clamping claw 42; the bottom of the clamping claw 42 is provided with a plurality of clamping grooves 420 structures; the left side of the guide rail 3 is bolted to the baffle 5; the front end of the fixed shaft 2 is connected to the baffle 6 through a rotating shaft, and the two telescopic cylinders 41 are respectively located on the left and right sides of the baffle 6; the lower end of the baffle 6 is connected to the cutting assembly; the right side of the mounting frame 1 is connected to the rotating cylinder 61 through a rotating shaft; the telescopic end of the rotating cylinder 61 is connected to the baffle 6 through a rotating shaft.

[0020] A rubber layer is adhered to the clamping position of the clamping jaws 42 to avoid damaging the stretch film.

[0021] like Figure 3 As shown, the baffle rod 5 is configured as a cylindrical structure to reduce the contact area between the baffle rod 5 and the stretch film, so that the clamping jaws 42 can smoothly push the stretch film downward along the outer surface of the baffle rod 5 .

[0022] like Figure 3 As shown, the cutting assembly includes a micro cylinder 7, a fixed block 71 and a cutter 72; the micro cylinder 7 is installed at the lower end of the baffle 6; the telescopic end of the micro cylinder 7 is fixedly connected to the fixed block 71; the cutter 72 is provided on the fixed block 71; the upper end of the cutter 72 is set to a structure inclined downward from the back to the front.

[0023] The fixing block 71 and the cutter 72 are detachably connected, so that the cutter 72 can be quickly replaced.

[0024] A mechanical film cutting mechanism of the present invention is installed on a fixed frame of an external annular wrapping machine through two slide rails 11, and two displacement cylinders 12 are also installed on the fixed frame. The annular wrapping machine wraps the wrapping film around the goods from bottom to top, and wraps the first layer of wrapping film on the goods. When the annular wrapping machine controls the wrapping film to finish packaging the goods, the annular wrapping machine first pauses and drives the wrapping film to rotate around the goods. At this time, the displacement cylinder 12 pushes the mounting frame 1 along the slide rail 11 backward to the front and upper part of the goods, so that the baffle 5 is on the front side of the goods. At the same time, the rotating cylinder 61 pushes the baffle 6 to drive the cutting assembly to rotate counterclockwise around the axis of the fixed shaft 2 at a forward viewing angle, so that the baffle 6 is rotated upward.

[0025] Then the annular wrapping machine continues to drive the wrapping film to rotate around the cargo at the same height to carry out the second layer of wrapping film winding work, so that the second layer of wrapping film wrapped on the cargo is not less than two circles. At this time, the front side area of ​​the wound multiple circles of the second layer of wrapping film is pulled forward by the baffle 5 and will not be tightly attached to the first layer of wrapping film on the front side of the cargo, and the front side area of ​​the wound multiple circles of the second layer of wrapping film forms a wrapping film stacking structure on the baffle 5. Then the rotating cylinder 61 pulls the baffle 6 to drive the cutting assembly to rotate in the opposite direction around the axis of the fixed shaft 2 until it is reset. At the same time, the annular wrapping machine continues to drive the wrapping film to rotate around the cargo at the same height to carry out the third layer of wrapping film winding work, so that the wrapping film continues to be wrapped around the cargo for one circle. At this time, the front side area of ​​the wound third layer of wrapping film is recorded as the film head of the wrapping film, and the front area of ​​the third layer of wrapping film is isolated by the baffle 6, so that the film head of the wrapping film will not be tightly attached to the second layer of wrapping film stacking structure, and then the annular wrapping machine stops working.

[0026] The edges on both sides of the baffle 6 are arc structures to avoid damaging the stretch film.

[0027] When the clamping jaws 42 pass downward through the film head of the third layer of stretch film, the clamping jaws 42 push the film head of the third layer of stretch film to move toward the cutter 72 of the fixed block 71, and the micro cylinder 7 drives the cutting blade 72 on the fixed block 71 to move. The knife 72 moves back and forth in the up and down directions, and the cutter 72 cuts the left area of ​​the film head of the third layer of stretch film from the ring wrapping machine. Since the right area of ​​the film head of the third layer of stretch film is in a state of being pressed against the outer surface of the goods backward, the right area of ​​the film head of the third layer of stretch film will be tightly fitted together with the laminated structure of the second layer of stretch film when the clamp 42 pulls it downward. In addition, since the left area of ​​the film head of the third layer of stretch film is in a state of being pulled to the left by the ring wrapping machine before being cut, the left area of ​​the film head of the third layer of stretch film will not be tightly fitted together with the laminated structure of the second layer of stretch film when the clamp 42 pulls it downward, thereby completing the cutting and tight bonding of the film head area of ​​the stretch film in one step, making it less likely for the film head area of ​​the stretch film wrapped around the goods to fall off.

[0028] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A mechanical film cutting mechanism, comprising: a mounting frame (1); Its characteristics are: It also includes a fixed shaft (2), a guide rail (3), a movable lifting lug (31), a lifting slide (4), a clamping claw (42), a baffle (5), a baffle (6) and a cutting assembly; The middle part of the mounting frame (1) is fixedly connected to a fixed shaft (2); the rear end of the fixed shaft (2) is rotatably connected to a guide rail (3); the fixed shaft (2) is rotatably connected to a movable lifting lug (31); the movable lifting lug (31) is fixedly connected to the guide rail (3); the mounting frame (1) is rotatably connected to an adjusting cylinder (32); the telescopic end of the adjusting cylinder (32) is rotatably connected to the movable lifting lug (31); a lifting slider (4) is slidably connected to the guide rail (3); the lifting slider (4) is fixedly connected to two telescopic cylinders (41); the telescopic ends of the telescopic cylinders (41) are each fixedly connected to a clamping claw (42); a blocking rod (5) is fixedly connected to the left side of the guide rail (3); the front end of the fixed shaft (2) is rotatably connected to a baffle (6); the lower end of the baffle (6) is connected to a cutting assembly; the mounting frame (1) is rotatably connected to a rotating cylinder (61); the telescopic end of the rotating cylinder (61) is rotatably connected to the baffle (6); A clamping groove (420) structure is provided at the bottom of the clamping jaw (42), and the laminated structure of the wrapping film is tightly adhered together under the downward pressure of the clamping groove (420) of the clamping jaw (42), forming a wrapping film pressed and pasted structure that is not easy to fall off; The clamping groove (420) is arranged in a rectangular structure, so that the pressing and pasting structure of the stretch film is more regular and beautiful; The cutting assembly includes a micro cylinder (7), a fixed block (71) and a cutter (72); the baffle (6) is equipped with the micro cylinder (7); the telescopic end of the micro cylinder (7) is fixedly connected to the fixed block (71); the cutter (72) is provided on the fixed block (71); The fixed block (71) and the cutter (72) are detachably connected, facilitating quick replacement of the cutter (72); The upper end of the cutter (72) is configured to be inclined downward from the rear to the front.

2. A mechanical film cutting mechanism according to claim 1, characterized in that: The left and right ends of the mounting frame (1) are each slidably connected to a slide rail (11); the mounting frame (1) is fixedly connected to a displacement cylinder (12).

3. A mechanical film cutting mechanism according to claim 1, characterized in that: The edges on both sides of the baffle (6) are arc structures to avoid damaging the stretch film.

4. A mechanical film cutting mechanism according to claim 1, characterized in that: A rubber layer is adhered to the clamping position of the clamping jaw (42) to avoid damaging the stretch film.

5. A mechanical film cutting mechanism according to claim 1, characterized in that: The baffle (5) is configured as a cylindrical structure to reduce the contact area between the baffle (5) and the stretch film.

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