CN111469575A

CN111469575A - Packaging printing film covering treatment method

Info

Publication number: CN111469575A
Application number: CN202010306534.2A
Authority: CN
Inventors: 郭东东
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2020-07-31

Abstract

The invention relates to a packaging printing film covering processing method, in particular to a packaging printing film covering processing device which comprises a rack, a conveying guide mechanism, a conveying mechanism, a pre-pressing mechanism, a hot-pressing mechanism and a plastic film trimming mechanism, wherein the plastic film trimming mechanism comprises a trimming roller rotatably mounted between two mounting side frames, a trimming knife assembly arranged on the trimming roller, a trimming driving motor fixedly mounted on the outer side wall of one of the mounting side frames, a gear ring and a pressing roller assembly positioned right above the trimming roller; the device related in the method provided by the invention can realize the streamlined automatic operation of film covering guiding, film covering prepressing, film covering hot pressing and film covering trimming, does not need multi-step operation, is more convenient to process, has higher processing efficiency, and solves the trouble of excessive manual operation.

Description

Packaging printing film covering treatment method

Technical Field

The invention relates to the technical field of packaging, and particularly provides a packaging printing film covering treatment method.

Background

In the field of packaging and printing, the film covering treatment of printing paper is mainly completed by a film covering machine, and the existing film covering machine can be divided into a ready-to-coat type film covering machine and a pre-coat type film covering machine, and is special equipment for paper and films. The instant coating type film laminating machine comprises three parts of gluing, drying and hot pressing, has wide application range and stable and reliable processing performance, and is a film laminating device widely used in China. The precoating type laminating machine has no gluing and drying parts, has small volume, low manufacturing cost and flexible and convenient operation, is suitable for laminating of large-batch printed matters, is suitable for laminating of small-batch and scattered printed matters such as an automatic desktop office system and the like, and has development prospect.

In terms of the precoating type film laminating machine, because the gluing part and the drying part are omitted, the structure is generally relatively simple, excessive manual operation is often needed in the film laminating process, and only simple film laminating operation can be generally carried out, but the excessive precoating plastic film cannot be trimmed and cut after the film laminating is finished, so that manual trimming is needed, the operation is divided into multiple steps, and the problem of obvious inconvenience in operation is caused.

Based on the problems, the invention provides a packaging printing film covering processing method, and particularly relates to a packaging printing film covering processing device which is used for replacing manual work to complete relevant forming processing operation of a stainless steel fork.

Disclosure of Invention

In order to solve the problems, the invention provides a processing method of a packaging printing film, and relates to a processing device of the packaging printing film, which can solve the problems in the background technology.

In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose: a processing method of packaging printing film covering specifically comprises the following steps:

s1, guiding and adjusting: adjusting the conveying guide mechanism according to the width of the packaging printing paper;

s2, adjusting the cutter spacing: correspondingly adjusting the distance between the two annular blades according to the width of the packaging printing paper;

s3, conveying printing paper: conveying the packaging printing paper forwards along a conveying path of the packaging printing film covering processing device;

s4, conveying the pre-coated plastic film: conveying the pre-coated plastic film forwards along a conveying path of a packaging printing film coating treatment device;

s5, pre-pressing of the coating film: prepressing the pre-coated plastic film in the conveying path on the printing paper on the conveying path, and evacuating air at the pressed part through prepressing;

s6, hot-pressing film coating: hot-pressing the pre-coating plastic film and the printing paper which pass through the gap between the hot-pressing roller and the matching roller and are subjected to the pre-pressing treatment in the step S5 to enable the pre-coating plastic film to be attached to the printing paper;

s7, plastic film trimming: cutting off the redundant plastic film on the printing paper coated with the film in the step S6;

the packaging printing film-covering processing method adopting the steps S1-S7 is adopted to carry out film-covering processing, and the packaging printing film-covering processing device is also concretely related to, which particularly comprises a frame, a conveying guide mechanism, a conveying mechanism, a pre-pressing mechanism, a hot-pressing mechanism and a plastic film trimming mechanism, the frame is provided with two mounting side frames, the conveying guide mechanism, the conveying mechanism and the plastic film trimming mechanism are sequentially arranged on the two mounting side frames, the conveying mechanism comprises two belt conveyors and a matching roller positioned between the two belt conveyors, the prepressing mechanism is positioned above the belt conveyor adjacent to the conveying guide mechanism, the prepressing mechanism is arranged between the two mounting side frames, the hot pressing mechanism is arranged between the two mounting side frames, and the hot pressing mechanism is positioned right above the matching rollers; wherein:

the hot pressing mechanism comprises a cross beam, a hot roller frame, vertical guide rails, adjusting screw rods, tension springs, a hot pressing roller and a hot roller driving motor, the cross beam is fixedly installed at the top ends of the two installation side frames, the vertical guide rails are arranged on the outer side walls of the two installation side frames, the hot roller frame is positioned below the cross beam and is vertically and slidably arranged on the vertical guide rails on the two sides, the adjusting screw rods are vertically and rotatably installed on the cross beam and are in threaded connection with the hot roller frame, the two tension springs are connected between the cross beam and the hot roller frame, the hot pressing roller is rotatably installed on the hot roller frame, the hot roller driving motor is fixedly installed on the side wall of the hot roller frame, and the output shaft of the hot roller driving motor is fixedly connected with the shaft ends of the hot pressing roller;

the plastic film trimming mechanism comprises trimming rollers rotatably arranged between two mounting side frames, trimming cutter assemblies arranged on the trimming rollers, trimming drive motors fixedly arranged on the outer side walls of the mounting side frames, gear rings and a press roller assembly positioned right above the trimming rollers, wherein each trimming roller comprises a hollow round roller barrel and two bearing ends fixedly arranged at two ends of the round roller barrel, two long-strip-shaped guide holes along the axial direction of the round roller barrel are formed in the round roller barrel, the two bearing ends are correspondingly and rotatably arranged on the two mounting side frames, each trimming cutter assembly comprises a bidirectional screw, two cutter seats and two annular blades correspondingly arranged on the two cutter seats, the bidirectional screw penetrates through the central shaft of the trimming roller, and the bidirectional screw is rotatably arranged between the two bearing ends, the two tool apron is located in the round roller, the tool apron is arranged on the two guide holes in a sliding mode, the two tool apron is in threaded connection with two thread sections which are arranged on the two-way screw in opposite rotating directions of threads, the round roller penetrates through the annular blade, the gear ring is fixedly connected to one of the shaft ends of the bearing end, and a driving gear meshed with the gear ring is arranged on an output shaft of the trimming driving motor.

Preferably, the conveying guide mechanism comprises two conveying support plates arranged oppositely, two transverse guide rods horizontally and fixedly connected between the two mounting side frames and a bidirectional screw rod horizontally and rotatably mounted between the two mounting side frames, the upper supporting surface of the conveying support plate is flush with the conveying plane of the belt conveyor, a limit baffle for laterally blocking printing paper is arranged on the conveying support plate, the two conveying support plates are horizontally arranged on the two transverse guide rods in a sliding manner, the two transverse guide rods are symmetrically distributed about the bidirectional screw rod, and the two conveying support plates are in threaded connection with thread sections of the bidirectional screw rod, wherein the two thread sections are oppositely arranged in a rotating direction.

Preferably, the conveying mechanism further comprises a conveying driving motor fixedly mounted on one of the outer side walls of the mounting side frames, a driving belt wheel fixedly connected with an output shaft of the conveying driving motor, two driven belt wheels and a conveying belt for synchronous transmission, the belt conveyor comprises a plurality of driving rollers which are horizontally and linearly and uniformly arranged and rotatably mounted between the two mounting side frames and a conveying belt driven by the driving rollers, the shaft ends of the two driving rollers adjacent to the matching rollers on the two belt conveyors are respectively connected with the driven belt wheels, and the two driven belt wheels are synchronously driven by the driving belt wheel through the conveying belt.

Preferably, the prepressing mechanism comprises a plastic film guide roller, a cross beam plate, a prepressing cylinder, a prepressing plate and vertical guide rods, the plastic film guide roller is rotatably installed between two installation side frames, the cross beam plate is fixedly connected between the two installation side frames, the cross beam plate is located between the plastic film guide roller and the hot pressing mechanism, the prepressing cylinder is vertically and fixedly installed at the top end of the cross beam plate, the prepressing plate is located below the cross beam plate and fixedly connected with the output end of the prepressing cylinder, the vertical prepressing plate top end is fixedly installed with two vertical guide rods in a sliding manner, and the prepressing thin roller horizontally arranged is rotatably installed at the bottom end of the prepressing plate.

Preferably, the compression roller assembly comprises a cross beam frame fixedly connected between the top ends of the two side mounting frames, a compression roller cylinder vertically and fixedly installed at the top end of the cross beam frame, a compression roller frame fixedly connected at the output end of the compression roller cylinder and a soft hair roller horizontally and rotatably installed on the compression roller frame, and the soft hair roller is located right above the trimming roller in the middle.

Preferably, both ends of two-way lead screw all are equipped with the hand wheel No. one, adjusting screw's top is equipped with the hand wheel No. two, the one end of two-way screw is equipped with the hand wheel No. three.

The technical scheme has the following advantages or beneficial effects:

the invention relates to a packaging printing film covering processing method, in particular to a packaging printing film covering processing device, wherein a pre-pressing mechanism can pre-press before hot-pressing film covering, so that air of pre-coated plastic films and printing paper is exhausted, better lamination after hot pressing is ensured, film covering wrinkles are avoided, the film covering quality is improved, a conveying guide mechanism can be matched with a plastic film trimming mechanism to complete conveying guide, and the plastic film trimming mechanism can cut off redundant plastic films after hot pressing.

Drawings

The invention and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. The drawings, in which like numerals refer to like parts throughout the several views and which are not necessarily drawn to scale, emphasis instead being placed upon illustrating the principles of the invention.

FIG. 1 is a flow chart of a method for processing a packaging printing film;

FIG. 2 is a schematic perspective view of a packaging printing film covering processing device provided by the present invention from one of the viewing angles;

FIG. 3 is an enlarged partial schematic view at A in FIG. 2;

FIG. 4 is a schematic perspective view of a packaging printing film covering processing device provided by the present invention from another perspective;

FIG. 5 is a top view of a package printing film coating processing device provided by the present invention;

FIG. 6 is a cross-sectional view B-B of FIG. 5;

FIG. 7 is a cross-sectional view C-C of FIG. 5;

fig. 8 is a cross-sectional view of D-D in fig. 5.

In the figure: 1. a frame; 11. installing a side frame; 2. a conveying guide mechanism; 21. conveying the supporting plate; 211. a limit baffle; 22. a transverse guide rod; 23. a bidirectional lead screw; 231. a first hand wheel; 3. a conveying mechanism; 31. a belt conveyor; 311. a driving roller; 312. a conveyor belt; 32. a mating roller; 33. a conveying drive motor; 34. a driving pulley; 35. a driven pulley; 36. a transmission belt; 4. a pre-pressing mechanism; 41. a plastic film guide roller; 42. a beam plate; 43. a pre-pressing cylinder; 44. pre-pressing a plate; 441. prepressing the fine roller; 45. a vertical guide rod; 5. a hot-pressing mechanism; 51. a cross beam; 52. a hot roll stand; 53. a vertical guide rail; 54. adjusting the screw rod; 541. a second hand wheel; 55. a tension spring; 56. a hot press roll; 57. a hot roller driving motor; 6. a plastic film trimming mechanism; 61. trimming rollers; 611. a round roller; 6111. a guide hole; 612. a bearing end; 62. a trimming blade assembly; 621. a bidirectional screw; 6211. a third hand wheel; 622. a tool apron; 623. an annular blade; 63. a trimming drive motor; 631. a drive gear; 64. a ring gear; 65. a press roll assembly; 651. a cross beam frame; 652. a compression roller cylinder; 653. a roller frame; 654. a fluff roll.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for the purpose of providing those skilled in the art with a more complete, accurate and thorough understanding of the concept and technical solution of the present invention, and to facilitate the implementation thereof, but not to limit the present invention.

Referring to fig. 1-8, a method for processing a packaging printing film includes the following steps:

s1, guiding and adjusting: the conveying guide mechanism 2 is adjusted according to the width of the packaging printing paper;

s2, adjusting the cutter spacing: the distance between the two annular blades 623 is correspondingly adjusted according to the width of the packaging printing paper;

s6, hot-pressing film coating: the pre-coating plastic film and the printing paper which pass through the gap between the hot pressing roller 56 and the matching roller 32 and are pre-pressed in the step S5 are subjected to hot pressing treatment, so that the pre-coating plastic film is attached to the printing paper;

the packaging printing film-covering processing method adopting the steps S1-S7 is adopted to carry out film-covering processing, and the packaging printing film-covering processing device is also concretely related to, the device specifically comprises a rack 1, a conveying guide mechanism 2, a conveying mechanism 3, a pre-pressing mechanism 4, a hot-pressing mechanism 5 and a plastic film trimming mechanism 6, wherein two mounting side frames 11 are arranged on the rack 1, the conveying guide mechanism 2, the conveying mechanism 3 and the plastic film trimming mechanism 6 are sequentially arranged on the two mounting side frames 11, the conveying mechanism 3 comprises two belt conveyors 31 and a matching roller 32 positioned between the two belt conveyors 31, the pre-pressing mechanism 4 is positioned above the belt conveyor 31 adjacent to the conveying guide mechanism 2, the prepressing mechanism 4 is arranged between the two mounting side frames 11, the hot pressing mechanism 5 is arranged between the two mounting side frames 11, and the hot pressing mechanism 5 is positioned right above the matching roller 32; wherein:

the hot pressing mechanism 5 comprises a cross beam 51, hot roller frames 52, vertical guide rails 53, adjusting screws 54, tension springs 55, hot pressing rollers 56 and hot roller driving motors 57, the cross beam 51 is fixedly welded at the top ends of the two installation side frames 11, the vertical guide rails 53 are welded on the outer side walls of the two installation side frames 11, the hot roller frames 52 are positioned below the cross beam 51 and are vertically and slidably arranged on the vertical guide rails 53 on the two sides, the adjusting screws 54 are vertically and rotatably installed on the cross beam 51, the adjusting screws 54 are in threaded connection with the hot roller frames 52, the two tension springs 55 are connected between the cross beam 51 and the hot roller frames 52, the hot pressing rollers 56 are rotatably installed on the hot roller frames 52, the hot roller driving motors 57 are fixedly installed on the side walls of the hot roller frames 52 through bolts, and output shafts of the hot roller driving motors 57 are fixedly connected with shaft;

before the hot-pressing coating is performed in step S6, the hot-pressing roller 56 needs to be preheated in advance, and after the printing paper and the pre-coating film both pass through the gap between the hot-pressing roller 56 and the mating roller 32, the hot-pressing gap needs to be adjusted, specifically by rotating the second hand wheel 541, thereby driving the adjusting screw 54 to rotate, the adjusting screw 54 will drive the hot roller frame 52 to slide downwards along the vertical guide rails 53 at both sides, thereby adjusting the hot pressing gap between the hot pressing roller 56 and the mating roller 32, so that the gap is proper, the pressure is proper, in the process of hot-pressing the pre-coated film in step S6, the hot roller driving motor 57 drives the hot press roller 56 to rotate, on the one hand, the hot press roller 56 melts the pre-coating glue on the pre-coated film, the pre-coat film is applied to the printing paper to form a coating film, and the hot press roller 56 and the registration roller 32 rotate at the same speed and rotate in opposite directions, and the printing paper, which is driven together to form the coating film, is conveyed forward.

The plastic film trimming mechanism 6 comprises a trimming roller 61 rotatably mounted between two mounting side frames 11, a trimming knife assembly 62 arranged on the trimming roller 61, a trimming drive motor 63 fixedly mounted on the outer side wall of one of the mounting side frames 11 through bolts, a gear ring 64 and a press roller assembly 65 positioned right above the trimming roller 61, wherein the trimming roller 61 comprises a hollow round roller barrel 611 and two bearing ends 612 fixedly mounted at two ends of the round roller barrel 611 in a welding manner, two strip-shaped guide holes 6111 along the axial direction of the round roller barrel 611 are arranged on the round roller barrel 611, the two bearing ends 612 are correspondingly and rotatably mounted on the two mounting side frames 11, the trimming knife assembly 62 comprises a bidirectional screw 621, two knife holders 622 and two annular blades 623 correspondingly mounted on the two knife holders 622, the bidirectional screw 621 penetrates along the central axis of the trimming roller 61, and the bidirectional screw 621 is rotatably mounted between the two bearing ends 612, the two tool holders 622 are positioned in the circular roller barrel 611, the tool holders 622 are slidably arranged on the two guide holes 6111, the two tool holders 622 are correspondingly and threadedly connected with two threaded sections arranged on the bidirectional screw 621 in opposite thread directions, the circular roller barrel 611 penetrates through the annular blade 623, the gear ring 64 is welded at the shaft end of one of the bearing end heads 612, and the output shaft of the trimming driving motor 63 is provided with a driving gear 631 meshed with the gear ring 64.

When the knife distance is adjusted in step S2, the third hand wheel 6211 is rotated to drive the two knife bases 622 to move towards or away from each other along the guide holes 6111 through the bidirectional screw 621, so as to drive the two annular blades 623 to move towards or away from each other along with the knife bases 622 synchronously, and then the relative distance between the two annular blades 623 is adjusted to enable the two annular blades 623 to fall at the edge trimming position of the pre-coating film; when the plastic film is trimmed in step S7, after the trimming driving motor 63 is started, the driving gear 631 drives the gear ring 64 to rotate, so that the trimming roller 61 rotates along with the gear ring, the trimming knife assembly 62 arranged on the trimming roller 61 rotates along with the gear ring, and the annular blade 623 aligns with the trimming position to cut off the redundant pre-coated plastic film; note that the horizontal upper tangent plane of the edge-trimmer roller 61 is not higher than the conveying plane of the conveyor belt 312.

Further, the conveying guide mechanism 2 comprises two conveying support plates 21 arranged oppositely, two transverse guide rods 22 horizontally welded between the two mounting side frames 11 and a bidirectional screw 23 horizontally and rotatably mounted between the two mounting side frames 11, the upper supporting surface of the conveying support plate 21 is flush with the conveying plane of the belt conveyor 31, a limit baffle 211 for laterally blocking printing paper is arranged on the conveying support plate 21, the two conveying support plates 21 are horizontally arranged on the two transverse guide rods 22 in a sliding manner, the two transverse guide rods 22 are symmetrically distributed relative to the bidirectional screw 23, and the two conveying support plates 21 are correspondingly in threaded connection with two thread sections on the bidirectional screw 23, wherein the thread sections are oppositely arranged in the screwing direction.

The conveying guide mechanism 2 is matched with the plastic film trimming mechanism 6, so that the mirror symmetry planes of the two conveying supporting plates 21 are superposed with the mirror symmetry planes of the two annular blades 623; when the guiding adjustment is performed in step S1, according to the width of the printing paper, after the printing paper is flatly placed on the conveying pallet 21, the first hand wheel 231 is rotated, so that the two conveying pallets 21 are moved toward each other by rotating the bidirectional screw 23, and the printing paper is confined between the two limit baffles 211.

Further, the conveying mechanism 3 further includes a conveying driving motor 33 fixedly mounted on the outer side wall of one of the mounting side frames 11 through a fixing seat, a driving pulley 34 fixedly connected with an output shaft of the conveying driving motor 33, two driven pulleys 35 and a transmission belt 36 for synchronous transmission, the belt conveyor 31 includes four transmission rollers 311 and a transmission belt 312, the transmission rollers 311 and the transmission belt 312 are horizontally, linearly and uniformly arranged and rotatably mounted between the two mounting side frames 11, the shaft ends of the two transmission rollers 311 adjacent to the matching rollers 32 on the two belt conveyors 31 are respectively connected with the driven pulleys 35, and the two driven pulleys 35 are synchronously driven by the driving pulley 34 through the transmission belt 36.

The conveying mechanism 3 is used for conveying printing paper (including before and after film coating), during film coating treatment, the conveying driving motor 33 is started, the matching roller 32 rotates along with the conveying driving motor, the driving belt wheel 34 drives the two driven belt wheels 35 to synchronously rotate along with the driving belt wheel through the driving belt 36, synchronous driving of the two belt conveyors 31 is achieved, and therefore conveying of the matching roller 32 and the two conveying belts 312 is achieved synchronously.

Further, the prepressing mechanism 4 includes a plastic film guide roller 41, a cross beam plate 42, a prepressing cylinder 43, a prepressing plate 44 and a vertical guide rod 45, the plastic film guide roller 41 is rotatably installed between the two installation side frames 11 (the plastic film guide roller 41 is used for conveying and guiding the pre-coated plastic film), the cross beam plate 42 is welded between the two installation side frames 11, the cross beam plate 42 is located between the plastic film guide roller 41 and the hot press mechanism 5, the prepressing cylinder 43 is vertically and fixedly installed at the top end of the cross beam plate 42 through a bolt, the prepressing plate 44 is located below the cross beam plate 42 and fixedly connected with the output end of the prepressing cylinder 43, the top end of the prepressing plate 44 is vertically and fixedly installed with the two vertical guide rods 45 which are slidably installed with the cross beam plate 42, and the bottom end of the prepressing plate 44 is rotatably installed.

When the pre-pressing of the film covering is performed in step S5, the printing paper and the pre-pressing film on the conveying path pass through the lower part of the pre-pressing thin roller 441, and in order to pre-press the pre-pressing film and the printing paper and evacuate air to achieve better adhesion, the pre-pressing cylinder 43 needs to be started to drive the pre-pressing plate 44 to move downwards, so that the pre-pressing thin roller 441 presses down the pre-pressing film, and the pre-pressing thin roller 441 achieves pre-pressing and evacuation air during the forward synchronous conveying of the pre-pressing film and the printing paper, and the purpose of adopting the pre-pressing thin roller 441 is to achieve the effects of rolling without affecting conveying, and achieving the effect of a scraper on the other hand, which is beneficial to.

Further, the press roll assembly 65 includes a cross frame 651 welded between the top ends of the two mounting side frames 11, a press roll cylinder 652 vertically and fixedly mounted on the top end of the cross frame 651 by bolts, a press roll frame 653 fixedly connected to the output end of the press roll cylinder 652 by bolts, and a soft hair roll 654 horizontally and rotatably mounted on the press roll frame 653, wherein the soft hair roll 654 is centrally located right above the trimming roll 61.

When the step S7 is performed to trim the plastic film, the pressure roller cylinder 652 drives the fluff roller 654 to press the plastic film, on one hand, the fluff roller 654 can form a flexible guide, and on the other hand, the compression of the fluff roller 654 facilitates the trimming of the plastic film.

Furthermore, the two ends of the bidirectional screw 23 are both provided with a first hand wheel 231, the top end of the adjusting screw 54 is provided with a second hand wheel 541, and one end of the bidirectional screw 621 is provided with a third hand wheel 6211.

Those skilled in the art will appreciate that variations may be implemented by those skilled in the art in combination with the prior art and the above-described embodiments, and will not be described in detail herein. Such variations do not affect the essence of the present invention and are not described herein.

The above description is of the preferred embodiment of the invention. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; it will be understood by those skilled in the art that various changes and modifications may be made, or equivalents may be modified, without departing from the spirit of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.

Claims

1. A packaging printing film covering processing method is characterized in that: the processing method specifically comprises the following steps:

s1, guiding and adjusting: the conveying guide mechanism (2) is adjusted according to the width of the packaging printing paper;

s2, adjusting the cutter spacing: correspondingly adjusting the distance between the two annular blades (623) according to the width of the packaging printing paper;

s6, hot-pressing film coating: hot-pressing the pre-coating plastic film and the printing paper which pass through the gap between the hot-pressing roller (56) and the matching roller (32) and are subjected to the pre-pressing treatment in the step S5 to enable the pre-coating plastic film to be attached to the printing paper;

the packaging printing film covering treatment process adopting the packaging printing film covering treatment method of the steps S1-S7 further specifically relates to a packaging printing film covering treatment device, which specifically comprises a rack (1), a conveying guide mechanism (2), a conveying mechanism (3), a pre-pressing mechanism (4), a hot-pressing mechanism (5) and a plastic film trimming mechanism (6), wherein two mounting side frames (11) are arranged on the rack (1), the conveying guide mechanism (2), the conveying mechanism (3) and the plastic film trimming mechanism (6) are sequentially arranged on the two mounting side frames (11), the conveying mechanism (3) comprises two belt conveyors (31) and a matching roller (32) positioned between the two belt conveyors (31), the pre-pressing mechanism (4) is positioned above the belt conveyor (31) adjacent to the conveying guide mechanism (2), the pre-pressing mechanism (4) is arranged between the two mounting side frames (11), the hot-pressing mechanism (5) is arranged between the two mounting side frames (11), and the hot-pressing mechanism (5) is positioned right above the matching roller (32); wherein:

the hot pressing mechanism (5) comprises a cross beam (51), a hot roller frame (52), a vertical guide rail (53), an adjusting screw rod (54), a tension spring (55), a hot pressing roller (56) and a hot roller driving motor (57), wherein the cross beam (51) is fixedly arranged at two ends of the installation side frame (11) and is arranged on the outer side wall of the installation side frame (11) and is provided with the vertical guide rail (53), the hot roller frame (52) is positioned below the cross beam (51) and is vertically and slidably arranged on the vertical guide rail (53) at two sides, the adjusting screw rod (54) is vertically and rotatably arranged on the cross beam (51), the adjusting screw rod (54) is in threaded connection with the hot roller frame (52), the cross beam (51) and the hot roller frame (52) are connected with two tension springs (55), and the hot pressing roller (56) is rotatably arranged on the hot roller frame (52), the hot roller driving motor (57) is fixedly arranged on the side wall of the hot roller frame (52), and an output shaft of the hot roller driving motor (57) is fixedly connected with the shaft end of the hot pressing roller (56);

the plastic film trimming mechanism (6) comprises a trimming roller (61) rotatably mounted between two mounting side frames (11), a trimming cutter component (62) arranged on the trimming roller (61), a trimming driving motor (63) fixedly mounted on one of the outer side walls of the mounting side frames (11), a gear ring (64) and a pressing roller component (65) positioned right above the trimming roller (61), wherein the trimming roller (61) comprises a hollow round roller (611) and two bearing ends (612) fixedly mounted at two ends of the round roller (611), two long-strip-shaped guide holes (6111) along the axial direction of the round roller (611) are formed in the round roller (611), the two bearing ends (612) are correspondingly and rotatably mounted on the two mounting side frames (11), the trimming cutter component (62) comprises a bidirectional screw (621), two cutter seats (622) and two annular blades (623) correspondingly mounted on the two cutter seats (622), the two-way screw (621) passes along the center shaft of edging roller (61), and two-way screw (621) rotate to be installed between two bearing end (612), two blade holders (622) are located in circle roller section (611), and blade holder (622) slide and set up on two guiding hole (6111), two blade holders (622) with two screw thread sections that the opposite setting was revolved to the screw thread on two-way screw (621) correspond threaded connection, circle roller section (611) follow pass in annular blade (623), ring gear (64) fixed connection is in one of them the axle head of bearing end (612), be equipped with on the output shaft of deburring driving motor (63) with drive gear (631) the meshing of ring gear (64).

2. The packaging printing film-covering processing method according to claim 1, characterized in that: carry guiding mechanism (2) including two transport layer board (21), two horizontal fixed connection that set up relatively two horizontal guide rod (22) between installation side frame (11) and horizontal rotation install two-way lead screw (23) between installation side frame (11), the pop-up surface of transport layer board (21) with the conveying plane of belt conveyor (31) flushes, be equipped with limit baffle (211) that the side kept off the printing paper on transport layer board (21), two transport layer board (21) horizontal slip sets up two on horizontal guide rod (22), two horizontal guide rod (22) about two-way lead screw (23) symmetric distribution, two transport layer board (21) with two screw threads on two-way lead screw (23) are revolved to the opposite screw thread section that sets up and are corresponded threaded connection.

3. The packaging printing film-covering processing method according to claim 1, characterized in that: the conveying mechanism (3) further comprises a conveying driving motor (33) fixedly mounted on the outer side wall of one of the mounting side frames (11), a driving belt wheel (34) fixedly connected with an output shaft of the conveying driving motor (33), two driven belt wheels (35) and a conveying belt (36) used for synchronous transmission, the belt conveyor (31) comprises a plurality of driving rollers (311) which are horizontally and linearly and uniformly arranged and rotatably mounted between the two mounting side frames (11) and a conveying belt (312) driven by the driving rollers (311), shaft ends of the two driving rollers (311) adjacent to the matching rollers (32) on the two belt conveyors (31) are respectively connected with the driven belt wheels (35), and the two driven belt wheels (35) are synchronously driven by the driving belt wheel (34) through the conveying belt (36).

4. The packaging printing film-covering processing method according to claim 1, characterized in that: the pre-pressing mechanism (4) comprises a plastic film guide roller (41), a beam plate (42), a pre-pressing cylinder (43), a pre-pressing plate (44) and a vertical guide rod (45), the plastic film guide roller (41) is rotatably arranged between the two mounting side frames (11), the beam plate (42) is fixedly connected between the two mounting side frames (11), the beam plate (42) is positioned between the plastic film guide roller (41) and the hot-pressing mechanism (5), the pre-pressing cylinder (43) is vertically and fixedly arranged at the top end of the cross beam plate (42), the prepressing plate (44) is positioned below the cross beam plate (42) and is fixedly connected with the output end of the prepressing cylinder (43), the top end of the prepressing plate (44) is vertically and fixedly provided with two vertical guide rods (45) which are arranged with the cross beam plate (42) in a sliding way, and a horizontally arranged fine prepressing roller (441) is rotatably arranged at the bottom end of the prepressing plate (44).

5. The packaging printing film-covering processing method according to claim 1, characterized in that: the press roll assembly (65) comprises a cross beam frame (651) fixedly connected between the top ends of the two mounting side frames (11), a press roll cylinder (652) vertically and fixedly mounted at the top end of the cross beam frame (651), a press roll frame (653) fixedly connected at the output end of the press roll cylinder (652) and a soft hair roll (654) horizontally and rotatably mounted on the press roll frame (653), wherein the soft hair roll (654) is centrally positioned right above the trimming roll (61).

6. The packaging printing film-covering processing method according to claim 2, characterized in that: the two ends of the bidirectional screw rod (23) are respectively provided with a first hand wheel (231), the top end of the adjusting screw rod (54) is provided with a second hand wheel (541), and one end of the bidirectional screw rod (621) is provided with a third hand wheel (6211).