CN212449969U - Film cutting table and film cutting device - Google Patents

Abstract

The utility model belongs to the technical field of film cutting equipment, in particular to a film cutting table and a film cutting device, which comprises a cutting plate and two guide plates; two guide plates are symmetrically arranged on the upper end surface of the cutting plate, and a film guide channel is formed between the two guide plates and the cutting plate; the lower end surfaces of the two guide plates are recessed at the guide channel to form limiting grooves, and the limiting grooves penetrate through the front end and the rear end of each guide plate; the height of the limiting groove is equal to the thickness of the film, and the width of the limiting groove and the width of the guide channel of the two guide plates are equal to the width of the film; a plurality of film upper limiting mechanisms are further arranged above the guide channel, and the film upper limiting mechanisms are abutted against the upper end faces of the films to limit the upper parts of the films; the two limiting grooves have a limiting effect on the thin film, and the thin film is ensured to stably move along the guide channel; meanwhile, due to the fact that the film upper limiting mechanism is arranged, the film cannot be arched upwards during cutting and keeps a flat state, and the cut film is high in size precision.

Description

Film cutting table and film cutting device

Technical Field

The utility model belongs to the technical field of film cutting equipment, especially, relate to a film cutting bed and film cutting device.

Background

In the existing film production and processing, the film is generally uniformly wound on a roller, the length and the width of the film which is just produced are large, and the length of the film which is actually used has a standard, so that in order to meet the sales of the film, the film needs to be cut and wound again, and the film is wound on a winding drum so as to meet the use requirements of customers. The cutting table of the existing film cutting equipment comprises a cutting plate and two guide plates arranged on the cutting plate, and a film is matched and limited between the two guide plates, so that the film is positioned and conveyed along the guide plates. However, the two guide plates can only limit the left side and the right side of the film, the upper end face of the film is not limited, when a cutting knife of the film cutting equipment cuts the film on the cutting plate, the film is easy to slightly arch upwards under the action of the cutting force of the cutting knife, the film is not in a flat state when being cut, and the size error of the cut film is large.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a film cutting bed, two deflectors that aim at solving among the prior art cutting bed can only carry on spacingly to the film left and right sides, and the up end of film lacks spacingly, and when the cutting knife cut the film on the cutting board, under the effect of the cutting force of cutting knife, the film slightly hunches upwards easily, is not in the horizontality when causing the film to be cut, leads to the big technical problem of film size error that the cutting came out.

In order to achieve the purpose, the embodiment of the utility model provides a film cutting table, which comprises a cutting plate and two guide plates; the upper end face of the cutting plate is symmetrically provided with two guide plates, and a film guide channel is formed between the two guide plates and the cutting plate; the guide plate structure is characterized in that the lower end surfaces of the two guide plates are recessed at the guide channel to form limiting grooves, and the limiting grooves penetrate through the front end and the rear end of each guide plate; the height of the limiting groove is equal to the thickness of the film, and the width of the limiting groove and the width of the guide channel of the two guide plates are equal to the width of the film; and a plurality of film upper limiting mechanisms are further arranged above the guide channel and are abutted against the upper end faces of the films to limit the films upwards.

Optionally, the two ends of the cutting plate are respectively a film input end and a film output end, and an inclined plane is arranged on the lower side of the film output end.

Optionally, the head end of the limiting groove is provided with a triangular film inlet which is tapered from outside to inside.

Optionally, a plurality of first kidney-shaped grooves are arranged on the guide plate in a penetrating manner, and the first kidney-shaped grooves are perpendicular to the conveying direction of the film; the screw rod of the first screw movably penetrates through the first kidney-shaped groove to be in threaded connection with the cutting plate.

Optionally, the film upper limiting mechanism comprises two upper limiting installation seats, two connecting shafts and a plurality of limiting linear bearings; the limiting mounting seats are respectively mounted at the upper ends of the guide plates, the two limiting mounting seats are horizontally mounted between the two connecting shafts, the two connecting shafts are respectively provided with a plurality of limiting linear bearings, and the distance between the limiting linear bearings and the upper end face of the cutting plate is equal to the thickness of the film.

Optionally, a plurality of third kidney-shaped grooves are arranged on the upper limiting mounting seat in a penetrating manner, and the third kidney-shaped grooves are perpendicular to the conveying direction of the film; and a screw rod of a third screw movably penetrates through the third kidney-shaped groove to be in threaded connection with the guide plate.

Optionally, a positioning portion vertically extends downwards from the head end of the guide plate, and the inner side of the positioning portion abuts against the side wall of the film input end of the cutting plate.

The film cutting device comprises a rack, an unreeling mechanism, a first cutting mechanism, a second cutting mechanism, a guide roller, a reeling roller, a waste collecting roller, a driving mechanism and the film cutting table; the guide roller, the film cutting table and the second cutting mechanism are sequentially arranged on the rack, and the second cutting mechanism is close to the tail end of the cutting plate; the unwinding mechanism is mounted on the rack above the guide roller, the first cutting mechanism is mounted on the rack above the cutting plate, and the cutting tracks of the first cutting mechanism and the second cutting mechanism are consistent; the lower side of the winding roller, the waste collecting roller and the driving mechanism are mounted on the rack below the film cutting table; place in film book on the unwinding mechanism walks around in proper order the guide roll the up end of cutting board with the downside of cutting board connect in the wind-up roll with receive the clout roller, the actuating mechanism drive the wind-up roll with receive the clout roller and rotate and drive the film and roll up the transport, first cutting mechanism with second cutting mechanism carries out cutting and secondary cutting to the film respectively.

Optionally, the first cutting mechanism includes a first mounting block, a first cylinder, a first mounting seat, and two first cutting blades; the first mounting block is mounted on the rack, the first air cylinder is vertically mounted on the first mounting block, and the first mounting seat is mounted on a driving rod of the first air cylinder; the two first cutting knives are symmetrically arranged at the lower end of the first mounting seat, and the first air cylinder drives the two first cutting knives to be tightly attached to the upper end face of the cutting plate at the guide channel.

Optionally, the second cutting mechanism comprises a second mounting block, a second cylinder, a second mounting seat and two second cutting knives; the second mounting block is mounted on the rack, the second air cylinder is horizontally mounted on the second mounting block, and the second mounting seat is mounted on a driving rod of the second air cylinder; the two second cutting knives are symmetrically arranged at the lower end of the second mounting seat, and the second air cylinder drives the two second cutting knives to be tightly attached to the tail end of the cutting plate

Compared with the prior art, the utility model discloses real film cutting bed and film cutting device have following technological effect:

1. the lower end surfaces of the two guide plates are recessed at the guide channel to form limiting grooves, and the limiting grooves penetrate through the front end and the rear end of the guide plates; the height of the limiting groove is equal to the thickness of the film, and the width of the limiting groove and the width of the guide channel of the two guide plates are equal to the width of the film. The left side and the right side of the film are accommodated in the two limiting grooves in a matched mode, the two limiting grooves limit the film, and the film can stably move along the guide channel. Meanwhile, a plurality of film upper limiting mechanisms are further arranged above the guide channel, the film upper limiting mechanisms abut against the upper end face of the film to limit the upper portion of the film, even under the action of cutting force of the cutting knife, the film cannot be arched upwards to keep a flat state during cutting due to the film upper limiting mechanisms, and the cut film is high in size precision.

2. The film roll placed on the unwinding mechanism sequentially bypasses the guide roller, the upper end face of the cutting plate and the lower side of the cutting plate and is connected to the winding roller and the waste collecting roller, the driving mechanism drives the winding roller and the waste collecting roller to rotate to drive the film roll to convey, the first cutting mechanism and the second cutting mechanism respectively cut the film for the first time and the second time, and due to the fact that dust can be attached to the film or a cutting knife or the cutting knife is abraded, when the cutting knife of the first cutting mechanism occasionally fails to completely cut the film, the film which is not completely cut off passes through the second cutting mechanism, the film can be cut for the second time by the cutting knife of the second cutting mechanism, so that the film is completely cut off, and cutting and winding are smoothly completed. Therefore, the utility model discloses a film cutting device can effectively solve under the state that current film did not cut off completely, the film can be torn by force under the pulling of rolling, leads to the film to warp, and forms the defective products.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural diagram of the film cutting table of the present invention.

Fig. 2 is the utility model discloses a deflector structure schematic diagram of film cutting bed.

Fig. 3 is a schematic structural diagram of the film cutting apparatus of the present invention.

Fig. 4 is an exploded view of the film cutting apparatus of the present invention.

Fig. 5 is a partial schematic view of the film cutting apparatus of the present invention.

Fig. 6 is an exploded view of the first cutting mechanism of the film cutting apparatus according to the present invention.

Wherein, in the figures, the respective reference numerals:

the film cutting machine comprises a frame 100, an unreeling mechanism 200, an unreeling bracket 210, an unreeling shaft 220, a guide rod 230, a guide roller 240, a film roll 250, a cutting plate 300, an upper end surface 301, a film input end 302, a film output end 303, an inclined plane 304, a connecting seat 310, a second guide roller 311, a guide plate 320, a first kidney-shaped groove 321, a first screw 322, a limit groove 323, a triangular film inlet 324, a positioning part 325, a guide channel 330, a film upper limit mechanism 340, an upper limit mounting seat 341, a third kidney-shaped groove 341a, a third screw 341b, a connecting shaft 342, a limit linear bearing 343, a first cutting mechanism 400, a first mounting block 410, a first air cylinder 420, a first mounting seat 430, a second kidney-shaped groove 431, a second screw 432, an inverted T-shaped groove 433, a first cutting knife 440, an inverted T-shaped connecting part 441, a second cutting mechanism 500, a second mounting block 510, a second air cylinder 520 and a second mounting seat 530, the cutting device comprises a second cutting knife 540, a guide roller 600, a winding roller 700, a positioning block 710, a threaded hole 711, a winding disc 720, a waste collecting roller 800, a driving mechanism 900, a driving motor 910 and a gear box 920.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary and intended to explain the embodiments of the present invention and are not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, referring to fig. 1 and 2, a film cutting table 30 is provided, which includes a cutting board 300 and two guide boards 320. The up end 301 of cutting board 300 is the horizontal plane, two are installed to the up end 301 symmetry of cutting board 300 the deflector 320, and two the deflector 320 with form film guide path 330 between the cutting board 300.

Referring to fig. 1 and 2, the lower end surfaces of the guide plates 320 are recessed to form a limiting groove 323 at the guide passage 330, and the limiting groove 323 penetrates through the front and rear ends of the guide plates 320. The height of the limiting groove 323 is equal to the thickness of the film, and the width of the limiting groove 323 and the width of the guide channel of the two guide plates 320 are equal to the width of the film, so that the left end and the right end of the film are accommodated in the two limiting grooves 323 in a matching manner. The two limiting grooves 323 have a limiting effect on the film, and ensure that the film stably moves along the guide channel 330. A plurality of upper film limiting mechanisms 340 are further arranged above the guide channel 330, and the upper film limiting mechanisms 340 are abutted to the upper end faces of the films to limit the upper portions of the films. Meanwhile, under the cutting force action of the cutting knife, the film cannot be arched upwards to keep a flat state when being cut due to the film upper limiting mechanism 340, and the cut film is high in size precision.

Referring to fig. 1 and 2, the two ends of the cutting plate 300 are respectively a film input end 302 and a film output end 303, and the lower side of the film output end 303 is provided with an inclined plane 304. The lower end of the cutting plate 300 is provided with a connecting seat 310, a second guide roller 311 is arranged below the inclined plane 304 of the connecting seat 310, and the film bypasses the film output end 303 of the cutting plate 300 along the upper end surface of the cutting plate 300 and then bypasses the upper side of the second guide roller 311. The second guide roller 311 holds the film against the upper end surface 301 of the cutting board 300 and the inclined plane 304.

Referring to fig. 1 and 2, a triangular film inlet 324 which is tapered from outside to inside is formed at the head end of the limiting groove 323, so that the film can enter the limiting groove 323 from the triangular film inlet 324 to be guided.

Referring to fig. 1 and 2, a plurality of first kidney-shaped slots 321 are formed through the guide plate 320, and the first kidney-shaped slots 321 are arranged perpendicular to the feeding direction of the film roll. The screw of the first screw 322 passes through the first slot 321 and is connected with the cutting board 300. The first slot 321 has an adjusting function, and the two guide plates 320 can be moved by loosening the first screw 322, so as to adjust the distance between the two guide plates 320, so as to adapt to films with different widths. When the adjustment is completed, the first screw 322 is locked, so that the guide plate 320 can be fixed on the cutting plate 300.

Referring to fig. 1 and 2, the two upper film limiting mechanisms 340 are provided, and the two upper film limiting mechanisms 340 are respectively close to the middle of the cutting plate 300 and the film output end of the cutting plate 300. The cutting area of the cutting plate 300 is the area between the two film upper limiting mechanisms 340.

Referring to fig. 1 and 2, the film upper limiting mechanism 340 includes two upper limiting installation seats 341, two connecting shafts 342, and a plurality of limiting linear bearings 343. The limiting installation seats 341 are respectively installed at the upper ends of the two guide plates 320, the two connecting shafts 342 are horizontally installed between the two upper limiting installation seats 341, the two connecting shafts 342 are both provided with a plurality of limiting linear bearings 343, and the distance between the limiting linear bearings 343 and the upper end surface 301 of the cutting plate 300 is equal to the thickness of the film, so that the limiting linear bearings 343 just press against the upper end surface of the film. Under the cutting force of the cutting knife, the limit linear bearing 343 can abut against the upper end face of the film to play a role in limiting the film, so that the film is prevented from arching upwards when being cut, and the film is ensured to be in a flat state.

Referring to fig. 1 and 2, a plurality of third slots 341a are formed through the upper limiting mount 341, and the third slots 341a are perpendicular to the film feeding direction. The screw of the third screw 341b passes through the third slot 341a and is connected with the guide plate 320 by screw thread. The position adjustment principle of the upper limit mounting seat 341 is consistent with that of the guide plate 320, and the upper limit mounting seat 341 is adjusted following the adjustment of the guide plate 320.

Referring to fig. 1 and 2, a positioning portion 325 extends vertically downward from the head end of the guide plate 320, and the inner side of the positioning portion 325 abuts against the sidewall of the film input end of the cutting plate 300 to perform a positioning function, so as to ensure that the guide plate 320 is positively adjusted along the first kidney-shaped groove 321.

The film cutting apparatus, referring to fig. 3 to 6, includes a frame 100, an unwinding mechanism 200, a first cutting mechanism 400, a second cutting mechanism 500, a guide roller 600, a winding roller 700, a waste collecting roller 800, a driving mechanism 900, and the film cutting table 300.

Referring to fig. 3 and 4, the guide roller 600, the film cutting table 30, and the second cutting mechanism 500 are sequentially installed at the frame 100, and the second cutting mechanism 500 is adjacent to the end of the cutting plate 300. The horizontal rotation of guide roll 600 connect in frame 100, the guide roll 600 top install in frame 100 unwinding mechanism 200, cutting board 300 top install in frame 100 first cutting mechanism 400, first cutting mechanism 400 is located two between stop gear 340 on the film, just first cutting mechanism 400 with the cutting orbit of second cutting mechanism 500 is unanimous, ensures first cutting mechanism 400 with the position that second cutting mechanism 500 cut the film is unanimous. The film cutting table 30 is arranged below the film cutting table and is provided with the winding roller 700, the waste collecting roller 800 and the driving mechanism 900, the winding roller 700 and the waste collecting roller 800 are horizontally and rotatably connected to the frame 100, and the driving mechanism 900 drives the winding roller 700 and the waste collecting roller 800 to rotate. The film roll placed on the unwinding mechanism 200 sequentially bypasses the lower side of the guide roller 600, the upper end face 301 of the cutting plate 300 and the lower side of the cutting plate 300 and is connected to the winding roller 700 and the waste collecting roller 800, the driving mechanism 900 drives the winding roller 700 and the waste collecting roller 800 to rotate to drive the film roll to be conveyed, and the first cutting mechanism 400 and the second cutting mechanism 500 respectively cut the film once and cut the film twice. In a normal environment, because dust can be attached to the film or the cutting knife, or the cutting knife is worn, when the cutting knife of the first cutting mechanism 400 occasionally fails to completely cut off the film, the film which is not completely cut off passes through the second cutting mechanism 500, and is cut by the cutting knife of the second cutting mechanism 500 for a second time, so that the film is completely cut off, and the cutting and the winding are smoothly completed. Therefore, film cutting device can effectively solve under the state that current film did not cut off completely, the film can be torn by force under the pulling of rolling, leads to the film to warp, and forms the defective products.

Referring to fig. 5 and 6, the first cutting mechanism 400 includes a first mounting block 410, a first cylinder 420, a first mounting seat 430, and two first cutting blades 440. The first mounting block 410 is mounted on the frame 100, the first cylinder 420 is vertically mounted on the first mounting block 410, and the first mounting seat 430 is mounted on the driving rod of the first cylinder 420. The two first cutting knives 440 are symmetrically arranged at the lower end of the first mounting seat 430, and the first cylinder 420 drives the two cutting knives 440 to cling to the upper end surface 301 of the cutting board 300. When the film is conveyed along the cutting plate 300, the first cutter 440 cuts the film on the cutting plate 300, thereby cutting the film.

Further, referring to fig. 5 and 6, a pair of second slots 431 is formed through the first mounting seat 430, and the screws of every two second screws 432 respectively and movably pass through the two second slots 431 to be in threaded connection with the upper end of the first cutter 440. The second slot 431 has an adjusting function, the two first cutters 440 can be moved by loosening the second screw 432, the distance between the two first cutters 440 is adjusted, and the two first cutters 440 can cut films with different sizes and widths. When the adjustment is completed, the second screw 432 is locked, so that the first cutting knife 440 can be fixed on the first mounting seat 430.

Further, referring to fig. 5 and 6, an inverted "T" shaped groove 433 is dug in the lower end surface of the first mounting seat 430, and the inverted "T" shaped groove 433 penetrates through the left end and the right end of the first mounting seat 430. An inverted T-shaped connecting part 441 extends from the upper end of the first cutting knife 440, and the inverted T-shaped connecting part 441 is in sliding connection with the inverted T-shaped groove 433 in a matching mode, so that the position of the first cutting knife 440 can be conveniently adjusted, and the cutting knife 440 can be conveniently positioned and installed.

Referring to fig. 5, the second cutting mechanism 500 includes a second mounting block 510, a second cylinder 520, a second mounting seat 530 and two second cutting knives 540. The second mounting block 510 is mounted on the frame 100, the second cylinder 520 is horizontally mounted on the second mounting block 510, and the second mounting seat 530 is mounted on a driving rod of the second cylinder 520. The two second cutters 540 are symmetrically installed at the lower end of the second installation seat 530, and the second cylinder 520 drives the two second cutters 540 to be tightly attached to the tail ends of the cutting board 300, so that the two second cutters 540 can perform secondary cutting on films which are not completely cut off and are discharged from the tail ends of the cutting board 300, and the films are completely cut off. The two second cutters 540 correspond to the two first cutters 440 one by one. Specifically, the structure of the second cutting mechanism 500 substantially corresponds to the structure of the first cutting mechanism 400, except that the first cutting mechanism 400 is vertically disposed and the second cutting mechanism 500 is horizontally disposed.

Referring to fig. 3 and 4, the unwinding mechanism 200 includes an unwinding bracket 210, an unwinding shaft 220, a guide lever 230, and a guide roller 240. The unwinding bracket 210 is mounted at the upper end of the frame 100, the unwinding shaft 220 is horizontally rotatably connected to the unwinding bracket 210, and the film roll 250 is placed on the unwinding shaft 220. The lower end of the guide rod 230 is installed on the unwinding bracket 210, the upper end of the guide rod 230 is rotatably connected with the guide roller 240, and the guide roller 240 and the unwinding shaft 220 are arranged in parallel. The film of the film roll sequentially passes around the upper side of the guide roller 600, the lower side of the guide roller 600, the upper end surface 301 of the cutting plate 300 and the lower side of the cutting plate 300 and is connected to the take-up roller 700 and the discard collecting roller 800.

Referring to fig. 3 and 4, one end of the wind-up roll 700 is rotatably connected to the frame 100, and the wind-up roll 700 is horizontally disposed. Two positioning blocks 710 are movably sleeved on the winding roller 700, and the winding disc 720 is placed between the two positioning blocks 710 in an adaptive manner. Each positioning block 710 is provided with a threaded hole 711 in a penetrating manner. A fastening screw is screwed into the threaded hole 711, and a screw of the fastening screw abuts against the wind-up roll 700. Two positioning blocks 710 are arranged to fix and position the winding disc 720, and meanwhile, the winding disc 720 can be conveniently mounted or dismounted. As described below, the fastening screw is loosened, that is, the positioning block 710 on the outer side can be removed from the wind-up roll 700, at this time, the wind-up roll 720 wound with a full film can be removed from the wind-up roll, the empty wind-up roll 720 is mounted on the wind-up roll 700, the positioning block 710 is sleeved on the wind-up roll 700, and the fastening screw is locked.

Referring to fig. 3 and 4, the driving mechanism 900 includes a driving motor 910 and a gear box 920 mounted on the frame 100. The driving motor 910 is connected with the winding roller 700 and the waste collecting roller 800 through the gear box 920, so that the driving motor 910 drives the winding roller 700 and the waste collecting roller 800 to rotate. Wherein, gear box 920 is ripe prior art, driving motor 910 with gear box 920's input is connected, gear box 920's two outputs respectively wind-up roll 700 with receipts clout roller 800 connects.

The film cutting device includes an electric control device (not shown), and the first cutting mechanism 400, the second cutting mechanism 500, and the driving mechanism 900 are all electrically connected to the electric control device. In this embodiment, electrically controlled device can adopt PLC or integrated chip to set up according to the actual production needs, because electrically controlled device belongs to technical shaping and ripe technique among the prior art, the event is right how electrically controlled device controls film cutting device work principle should be familiar and can master for technical staff in the field, so the utility model discloses it is no longer repeated here to its control principle.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of the ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, its framework form can be nimble changeable, can derive series of products. But merely as a matter of simple deductions or substitutions, should be considered as belonging to the scope of patent protection of the present invention as determined by the claims submitted.

Claims (10)

1. The film cutting table comprises a cutting plate and two guide plates; the upper end face of the cutting plate is symmetrically provided with two guide plates, and a film guide channel is formed between the two guide plates and the cutting plate; the guide plate structure is characterized in that the lower end surfaces of the two guide plates are recessed at the guide channel to form limiting grooves, and the limiting grooves penetrate through the front end and the rear end of each guide plate; the height of the limiting groove is equal to the thickness of the film, and the width of the limiting groove and the width of the guide channel of the two guide plates are equal to the width of the film; and a plurality of film upper limiting mechanisms are further arranged above the guide channel and are abutted against the upper end faces of the films to limit the films upwards.

2. The film cutting table of claim 1, wherein: the two ends of the cutting plate are respectively a film input end and a film output end, and the lower side of the film output end is provided with an inclined plane.

3. The film cutting table of claim 2, wherein: the head end of the limiting groove is provided with a triangular film inlet which is gradually reduced from outside to inside.

4. The film cutting table of claim 3, wherein: a plurality of first kidney-shaped grooves are arranged on the guide plate in a penetrating manner, and the first kidney-shaped grooves are perpendicular to the conveying direction of the film; the screw rod of the first screw movably penetrates through the first kidney-shaped groove to be in threaded connection with the cutting plate.

5. The film cutting table of claim 4, wherein: the film upper limiting mechanism comprises two upper limiting installation seats, two connecting shafts and a plurality of limiting linear bearings; the limiting mounting seats are respectively mounted at the upper ends of the guide plates, the two limiting mounting seats are horizontally mounted between the two connecting shafts, the two connecting shafts are respectively provided with a plurality of limiting linear bearings, and the distance between the limiting linear bearings and the upper end face of the cutting plate is equal to the thickness of the film.

6. The film cutting table of claim 5, wherein: a plurality of third kidney-shaped grooves are arranged on the upper limiting mounting seat in a penetrating manner, and the third kidney-shaped grooves are perpendicular to the conveying direction of the film; and a screw rod of a third screw movably penetrates through the third kidney-shaped groove to be in threaded connection with the guide plate.

7. The film cutting table of claim 6, wherein: the head end of the guide plate vertically extends downwards to form a positioning part, and the inner side of the positioning part is abutted to the side wall of the film input end of the cutting plate.

8. The film cutting device is characterized by comprising a rack, an unreeling mechanism, a first cutting mechanism, a second cutting mechanism, a guide roller, a reeling roller, a waste collecting roller, a driving mechanism and the film cutting table of any one of claims 1 to 7; the guide roller, the film cutting table and the second cutting mechanism are sequentially arranged on the rack, and the second cutting mechanism is close to the tail end of the cutting plate; the unwinding mechanism is mounted on the rack above the guide roller, the first cutting mechanism is mounted on the rack above the cutting plate, and the cutting tracks of the first cutting mechanism and the second cutting mechanism are consistent; the lower side of the winding roller, the waste collecting roller and the driving mechanism are mounted on the rack below the film cutting table; place in film book on the unwinding mechanism walks around in proper order the guide roll the up end of cutting board with the downside of cutting board connect in the wind-up roll with receive the clout roller, the actuating mechanism drive the wind-up roll with receive the clout roller and rotate and drive the film and roll up the transport, first cutting mechanism with second cutting mechanism carries out cutting and secondary cutting to the film respectively.

9. The film cutting apparatus according to claim 8, wherein: the first cutting mechanism comprises a first mounting block, a first air cylinder, a first mounting seat and two first cutting knives; the first mounting block is mounted on the rack, the first air cylinder is vertically mounted on the first mounting block, and the first mounting seat is mounted on a driving rod of the first air cylinder; the two first cutting knives are symmetrically arranged at the lower end of the first mounting seat, and the first air cylinder drives the two first cutting knives to be tightly attached to the upper end face of the cutting plate at the guide channel.

10. The film cutting apparatus according to claim 9, wherein: the second cutting mechanism comprises a second mounting block, a second air cylinder, a second mounting seat and two second cutting knives; the second mounting block is mounted on the rack, the second air cylinder is horizontally mounted on the second mounting block, and the second mounting seat is mounted on a driving rod of the second air cylinder; the two second cutting knives are symmetrically arranged at the lower end of the second mounting seat, and the second air cylinder drives the two second cutting knives to be tightly attached to the tail end of the cutting plate.

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