Film cutting device for film sealing equipment

Abstract

The utility model discloses a film cutting device for film sealing equipment, which belongs to the technical field of film sealing and comprises a base, a chopping mechanism and a lifting mechanism. The cutting mechanism comprises a cutting seat, a cutter and an elastic supporting piece, the cutting seat is fixedly connected to the base, the cutter is slidably connected relative to the cutting seat in the height direction, the elastic supporting piece is connected between the cutter and the cutting seat and used for providing elastic force enabling the cutter to be away from the cutting seat, and the lifting mechanism is fixedly connected to the base. And the cutter is used for executing the cutting action on the film material under the driving of the lifting mechanism. According to the film cutting device, the cutter slides relative to the cutting base in the height direction, when the cutter descends, the film can be cut off, in the film cutting process, the cutter moves horizontally downwards as a whole, and therefore the film cannot be affected by the cutter to deflect and turn over.

Description

Technical Field

[0001] The utility model relates to the technical field of film sealing, and particularly relates to a film cutting device for a film sealing device. Background Art

[0002] A film sealing device is a device used to connect a thin film to the surface of a product to be film-sealed by means of hot pressing, so as to seal the surface of the product to be film-sealed with the thin film.

[0003] In the prior art, the film sealing device mainly uses two rollers for feeding and winding. However, this feeding and winding method has certain disadvantages: since the winding roller is used for winding, and it is also necessary to ensure that the film material does not break during winding, the width dimension of the thin film must be larger than the actual use width, resulting in the need to reserve an extra sufficient margin for the width of the thin film, thus causing waste in the use of the thin film.

[0004] To solve this problem, some film sealing devices have improved the winding method. For example, in the Chinese invention patent with the publication number CN116331580A, the configured film cutting assembly shears the film material with scissors. However, when the scissors shear the film material, the scissors shear from one side to the other along the width direction of the film material, and the cutting edge of the scissors will cause the film material to deflect and flip, easily deforming the cut of the film material, and seriously resulting in local folding of the cut of the film material, thus affecting the film sealing operation. Summary of the Invention

[0005] Aiming at the problem that the film cutting assembly in the prior art film sealing device easily causes the film material to deflect and flip during film cutting, the purpose of the utility model is to provide a film cutting device for a film sealing device to at least partially solve the above problems.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A film cutting device for a film sealing device includes a base, a chopping mechanism, and a lifting mechanism; the chopping mechanism includes a chopping seat, a cutting knife, and an elastic support member. The chopping seat is fixedly connected to the base. The cutting knife is slidably connected to the chopping seat in the height direction. The elastic support member is connected between the cutting knife and the chopping seat. The elastic support member is used to provide an elastic force to move the cutting knife away from the chopping seat. The lifting mechanism is fixedly connected to the base. The cutting knife is used to perform a chopping action on the film material under the drive of the lifting mechanism.

[0008] In some preferred embodiments, a pressing mechanism is further included, and the pressing mechanism is arranged on the upstream side of the chopping mechanism; the pressing mechanism includes a pressing seat, rollers, roller seats and pressing springs; the pressing seat is fixedly connected relative to the base, the rollers are rotatably connected to the roller seats, the roller seats are slidably connected relative to the pressing seat in the height direction, the rotation axes of the rollers are horizontally arranged, and the rotation axes of the rollers are parallel to the conveying direction of the film material; the pressing springs are connected between the pressing seat and the roller seats, and the pressing springs are used to provide an elastic force for pressing the rollers against the pressing seat.

[0009] In some preferred embodiments, a guiding column is fixedly connected to the pressing seat, and a guiding hole adapted to the guiding column is formed in the roller seat, so that the roller seat is slidably connected relative to the pressing seat through the guiding column; the pressing spring is sleeved on the guiding column, the pressing spring is located on the upper side of the roller seat, and a limiting portion for preventing the pressing spring from falling off is provided on the guiding column.

[0010] In some preferred embodiments, there are two roller seats which are arranged at intervals along the direction of the roller axis, and the rollers are rotatably connected to each roller seat, and the two rollers are respectively used for pressing both sides of the film material in the length direction.

[0011] In some preferred embodiments, the pressing mechanism further includes a guiding plate and a bearing plate. The two ends of the guiding plate are respectively fixedly connected to the two roller seats, the bearing plate is fixedly connected relative to the base, and a gap for the film material to pass through is reserved between the bearing plate and the guiding plate.

[0012] In some preferred embodiments, the pressing mechanism further includes a pressing rod and a receiving plate. The pressing rod is fixedly connected to the guiding plate, a through hole for the pressing rod to pass through is formed in the cutter, the receiving plate is fixedly connected to the cutter, and a gap for the film material to pass through is reserved between the pressing rod and the receiving plate.

[0013] In some preferred embodiments, the upstream end of the guiding plate is configured in a bent shape suitable for the input of the film material.

[0014] In some preferred embodiments, the cutter includes an arc-shaped cutting edge, the arc-shaped cutting edge is arranged perpendicular to the conveying direction of the film material, and both ends of the arc-shaped cutting edge in the length direction are at low points.

[0015] By adopting the above technical solutions, the beneficial effects of the present utility model are as follows: in the present utility model, the cutter slides relative to the chopping seat in the height direction. When the cutter descends, the film material can be cut off. And during the process of cutting the film material, the cutter moves downward in a translational manner as a whole. Therefore, the film material will not be deflected and flipped under the influence of the cutter. Description of the Drawings

[0016] Figure 1 This is a schematic structural diagram of the film cutting device for the film sealing equipment in the first embodiment of the present utility model.

[0017] Figure 2 This is a side view of the film cutting device for the film sealing equipment in the first embodiment of the present utility model.

[0018] Figure 3 This is a front view of the film cutting device for the film sealing equipment in the first embodiment of the present utility model.

[0019] Figure 4 This is a schematic structural diagram of the film cutting device for the film sealing equipment in the second embodiment of the present utility model.

[0020] Figure 5 This is a side view of the film cutting device for the film sealing equipment in the second embodiment of the present utility model.

[0021] Figure 6 This is a top view of the film cutting device for the film sealing equipment in the second embodiment of the present utility model.

[0022] Figure 7 This is a schematic structural diagram of the film cutting device (including the guide plate) for the film sealing equipment in the second embodiment of the present utility model.

[0023] Figure 8 This is another schematic structural diagram of the film cutting device (including the guide plate) for the film sealing equipment in the second embodiment of the present utility model.

[0024] Figure 9 This is a side view of the film cutting device (including the guide plate) for the film sealing equipment in the second embodiment of the present utility model.

[0025] Figure 10 This is a schematic structural diagram of the receiving plate in the second embodiment of the present utility model.

[0026] In the figure: 1 - base, 2 - chopping mechanism, 21 - chopping seat, 22 - cutting knife, 23 - elastic support member, 24 - fastening screw, 3 - pressing mechanism, 31 - pressing seat, 32 - roller seat, 33 - roller, 34 - pressing spring, 35 - guide post, 36 - guide plate, 37 - bearing plate, 38 - pressing rod, 39 - receiving plate, 30 - notch. Detailed Description of the Invention

[0027] The following further describes the specific embodiments of the present utility model in conjunction with the accompanying drawings. It should be noted here that the description of these embodiments is used to help understand the present utility model, but does not constitute a limitation to the present utility model. In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0028] It should be noted that in the description of the present utility model, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc. is the description of the structure of the present utility model based on the accompanying drawings. It is only for the convenience of describing the present utility model simply, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0029] For the "first" and "second" in this technical solution, it is only a title distinction for the same or similar structures, or corresponding structures with similar functions, and is not an arrangement of the importance of these structures, nor does it have an order, or compare sizes, or other meanings.

[0030] In addition, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, the connection 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two structures. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the general idea of the present utility model and in connection with the specific context of this solution.

[0031] Embodiment 1

[0032] A film cutting device for a film sealing device, as Figure 1-3 shown, includes a base 1, a chopping mechanism 2 and a lifting mechanism.

[0033] The chopping mechanism 2 specifically includes a chopping seat 21, a cutting knife 22 and an elastic support member 23.

[0034] The chopping seat 21 is fixedly connected to one side of the top surface of the base 1 by screws. The top surface of the chopping seat 21 is provided with a groove along the front-rear direction and a groove along the left-right direction. The front-rear direction is the conveying direction of the film material, and the front side refers to the side facing the unwinding roller. The front-rear groove is for the film material to pass through, and the left-right groove is for installing the cutting knife 22.

[0035] In this embodiment, the cutting knife 22 is configured as a long strip and has an "n"-shaped structure, including two sliding blocks and a cutting edge located between the two sliding blocks. Fastening screws 24 are threadedly connected to both ends of the left-right groove. Corresponding screw holes for the fastening screws 24 to pass through are provided on the two sliding blocks of the cutting knife 22, so that the cutting knife 22 can be slidably connected relative to the chopping seat 21 in the height direction with the support of the fastening screws 24. The cutting edge is integrally arc-shaped, and the arc-shaped cutting edge is arranged perpendicular to the film conveying direction (i.e., the left-right direction). The two ends of the arc-shaped cutting edge in the length direction are at low points. Thus, when the cutting knife 22 descends under pressure, the two ends of the cutting edge first contact both sides of the film in the length direction, and then the cutting edge cuts the film from both sides to the middle. During the cutting process, the film is symmetrically stressed and will not skew or flip.

[0036] The elastic support member 23 is configured as a helical compression spring. There are two of them and they are respectively sleeved on the two fastening screws 24. At the same time, the elastic support member 23 is located between the bottom surface of the cutting knife 22 and the bottom of the left-right groove. The elastic support member 23 is used to provide an elastic force to keep the cutting knife 22 away from the chopping seat 21, so that there is a spacing for the film to pass between the cutting knife 22 and the bottom of the front-back groove.

[0037] The lifting mechanism (not shown in the figure) is fixedly connected to the base 1. For example, it is configured as a cylinder or a hydraulic cylinder. The output end of the lifting mechanism is connected to the cutting knife 22 by screws, so that the cutting knife 22 can perform the chopping action on the film under the drive of the lifting mechanism.

[0038] It is easy to understand that the hot pressing head (or hot pressing plate) in the film sealing device is also configured with a driving mechanism for driving it to perform reciprocating lifting motion. A protrusion can be provided on the output end (or the hot pressing head / hot pressing plate) of the driving mechanism. The protrusion extends above the cutting knife 22, or directly makes a corner of the hot pressing head / hot pressing plate located above the cutting knife 22. Thus, when the driving mechanism drives the hot pressing head / hot pressing plate to perform the hot pressing operation on the film, the protrusion (or a corner of the hot pressing head / hot pressing plate) can synchronously press the cutting knife 22 to descend, thereby cutting the film. Therefore, there is no need to additionally set up a lifting mechanism. Since the left-right groove has a certain depth to accommodate the cutting knife 22, the cutting knife 22 does not affect the working stroke of the hot pressing head / hot pressing plate.

[0039] The working process of the film cutting device for the film sealing device provided by the embodiment of the present utility model is as follows:

[0040] During use, the film material is released from the unwinding roller of the film sealing device, passes through from the upstream (front) side of the film cutting device, and after passing under the cutting knife 22, exits from the downstream (rear) side of the film cutting device. When the required length of the film material exits, the cutting knife 22 moves downward driven by the lifting mechanism, thereby cutting the film material under the cutting knife 22. When cutting, the two ends of the cutting knife 22 first contact both sides in the length direction of the film material, and then the blade cuts the film material from both sides to the middle. During the cutting process, the film material is symmetrically stressed and will not deflect or flip.

[0041] Embodiment 2

[0042] It is easy to understand that after the film material is cut, the cut will be at the cutting knife 22. When film sealing needs to be performed again, the traction component in the film sealing device will clamp and traction the cut of the film material towards the hot pressing component. Therefore, in order to enable the cut of the film material to be clamped by the traction component, it is also necessary to ensure that the cut of the film material does not drift towards the unwinding roller side.

[0043] Therefore, in this embodiment, as Figure 4-6 shown, the configured film cutting device further includes a pressing mechanism 3. The pressing mechanism 3 is arranged on the upstream side of the chopping and cutting mechanism 2. The pressing mechanism 3 specifically includes a pressing seat 31, a roller seat 32, a roller 33, and a pressing spring 34.

[0044] Among them, the pressing seat 31 is fixedly connected to the base 1. For example, the pressing seat 31 is fixedly connected to the front side of the chopping seat 21 by screws.

[0045] The roller seat 32 is located on one side of the top surface of the pressing seat 31, and the roller seat 32 is slidably connected to the pressing seat 31 in the height direction. For example, a guiding column 35 is fixedly connected to one side of the top surface of the pressing seat 31, and a guiding hole adapted to the guiding column 35 is provided on the roller seat 32 to facilitate the roller seat 32 to slide relative to the pressing seat 31 in the height direction along the guiding column 35. The pressing spring 34 is configured as a helical compression spring, which is sleeved on the guiding column 35. The pressing spring 34 is located on the upper side of the roller seat 32, and a limiting portion for preventing the pressing spring 34 from falling off is provided at the top of the guiding column 35. The diameter of the limiting portion is larger than the diameter of the pressing spring 34. For example, the guiding column 35 is configured as a screw, on the one hand, the screw is threadedly connected to the pressing seat 31, and on the other hand, the roller seat 32 will not easily slip off.

[0046] The roller 33 is rotatably connected to the roller seat 32. The rotation axis of the roller 33 is horizontally arranged, and the rotation axis of the roller 33 is parallel to the conveying direction of the film material, that is, the axis of the roller 33 is parallel to the left - right direction. The pressing spring 34 is used to provide an elastic force that presses the circumferential surface of the roller 33 against the top surface of the pressing seat 31, so that the film material passing through the top surface of the pressing seat 31 can be subjected to the pressure given by the roller 33, thereby preventing the film material from drifting towards the unwinding roller side after being cut.

[0047] In this embodiment, two roller seats 32 are provided and arranged at intervals in the left - right direction. A roller 33 is rotatably connected to each roller seat 32. The two rollers 33 are respectively used to press both sides of the film material in the length direction. Of course, each roller seat 32 is also provided with a compression spring 34.

[0048] In this embodiment, as Figure 7-9 shown, the pressing mechanism 3 further includes a guide plate 36 and a bearing plate 37. The left and right ends of the middle part of the guide plate 36 are respectively fixedly connected to the two roller seats 32 by screws. The bearing plate 37 is fixedly connected relative to the base 1. For example, the bearing plate 37 is fixedly connected to the pressing seat 31 by screws or welding. The bearing plate 37 is located on the front side of the pressing seat 31, and a gap for the film material to pass through is reserved between the bearing plate 37 and the guide plate 36. It is easy to understand that the upstream end (i.e., the front end) of the guide plate 36 is configured as a bent structure suitable for the input of the film material, and this bent structure bends upward.

[0049] In this embodiment, the rear end of the guide plate 36 extends backward above the cutter 22. The pressing mechanism 3 further includes a pressing rod 38 and a receiving plate 39. As Figure 7-9 shown, the pressing rod 38 is fixedly connected to the rear end of the guide plate 36. A through - hole for the pressing rod 38 to pass through is correspondingly formed on the cutter 22. The receiving plate 39 is fixedly connected to the cutter 22 by screws or welding, and a spacing for the film material to pass through is reserved between the lower end of the pressing rod 38 and the receiving plate 39.

[0050] In addition, the pressing rod 38 and the receiving plate 39 are arranged on the front side of the cutting edge in the cutter 22. With such a setting, when the film material is cut, the cut end of the film material will fall on the receiving plate 39, and under the restriction of the pressing rod 38, the film material will not turn up, so that the cut end of the film material is restricted, facilitating the clamping and traction of the cut end of the film material by the traction component of the film sealing device.

[0051] Among them, more than one pressing rod 38 can be provided. For example, three pressing rods 38 are provided and arranged at intervals. In order to further facilitate the clamping and traction of the cut end of the film material by the traction component of the film sealing device, in this embodiment, two notches 30 are provided at the rear end of the receiving plate 39. As Figure 10 shown, the two notches 30 are respectively located between two adjacent pressing rods 38. There is no pressing rod 38 blocking on the upper side of the notch 30 and no receiving plate 39 blocking on the lower side, thus facilitating the clamping and traction of the cut end of the film material by the traction component of the film sealing device through the notch 30.

[0052] The embodiments of the present utility model have been described in detail in conjunction with the accompanying drawings, but the present utility model is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present utility model, various changes, modifications, substitutions, and variations made to these embodiments still fall within the protection scope of the present utility model.

Claims

1. A film cutting device for film sealing equipment, characterized in that: It includes a base, a chopping mechanism and a lifting mechanism; the chopping mechanism includes a chopping seat, a cutting knife and an elastic support member, the chopping seat is fixedly connected to the base, the cutting knife is slidably connected relative to the chopping seat along the height direction, the elastic support member is connected between the cutting knife and the chopping seat, the elastic support member is used to provide an elastic force to keep the cutting knife away from the chopping seat, the lifting mechanism is fixedly connected to the base, and the cutting knife is used to perform a chopping action on the film material under the drive of the lifting mechanism.

2. The film cutting device for film sealing equipment according to claim 1, characterized in that: It also includes a clamping mechanism, which is arranged on the upstream side of the chopping mechanism; the clamping mechanism includes a clamping seat, a roller, a roller seat and a clamping spring; the clamping seat is fixedly connected to the base, the roller is rotatably connected to the roller seat, the roller seat is slidably connected to the clamping seat along the height direction, the rotation axis of the roller is horizontally arranged, and the rotation axis of the roller is parallel to the conveying direction of the film material; the clamping spring is connected between the clamping seat and the roller seat, and the clamping spring is used to provide an elastic force to press the roller on the clamping seat.

3. The film cutting device for film sealing equipment according to claim 2, characterized in that: A guide column is fixedly connected to the clamping seat, and a guide hole adapted to the guide column is opened on the roller seat, so that the roller seat can be slidably connected relative to the clamping seat through the guide column; the clamping spring is sleeved on the guide column, the clamping spring is located on the upper side of the roller seat, and a limiting portion is provided on the guide column to prevent the clamping spring from falling off.

4. The film cutting device for film sealing equipment according to claim 2, characterized in that: There are two roller seats which are arranged at intervals along the direction of the roller axis. Each roller seat is rotatably connected to the roller, and the two rollers are respectively used to press the two sides of the film material in the length direction.

5. The film cutting device for film sealing equipment according to claim 4, characterized in that: The clamping mechanism also includes a guide plate and a bearing plate. The two ends of the guide plate are fixedly connected to the two roller seats respectively. The bearing plate is fixedly connected to the base. A gap is reserved between the bearing plate and the guide plate for the film material to pass through.

6. The film cutting device for film sealing equipment according to claim 5, characterized in that: The clamping mechanism also includes a pressure rod and a receiving plate. The pressure rod is fixedly connected to the guide plate. The cutter is provided with a through hole for the pressure rod to pass through. The receiving plate is fixedly connected to the cutter. A gap is reserved between the pressure rod and the receiving plate for the film material to pass through.

7. The film cutting device for film sealing equipment according to claim 5, characterized in that: The upstream end of the guide plate is configured as a bent structure suitable for film material input.

8. The film cutting device for film sealing equipment according to claim 1, characterized in that: The cutter comprises an arc-shaped blade, which is arranged perpendicular to the conveying direction of the film material, and both ends of the arc-shaped blade along the length direction are at low points.

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