CN112660868A

CN112660868A - Radium-shine transfer membrane unwinding device

Info

Publication number: CN112660868A
Application number: CN202011516836.9A
Authority: CN
Inventors: 宋伟; 蒋崇贞; 杨宗前
Original assignee: Beijing Leigh Mardon Pacific Packaging Co ltd
Current assignee: Beijing Leigh Mardon Pacific Packaging Co ltd
Priority date: 2019-09-02
Filing date: 2019-09-02
Publication date: 2021-04-16
Anticipated expiration: 2039-09-02
Also published as: CN112660868B; CN110466247B; CN110466247A

Abstract

The invention discloses a laser transfer film unwinding device (210), wherein the laser transfer film unwinding device (210) comprises a first switching shaft (211), a first unwinding shaft (212), a second unwinding shaft (213), a third unwinding shaft (214), and a connecting roller (215) arranged between any two unwinding shafts, wherein the first switching shaft (211) is positioned among the first unwinding shaft (212), the second unwinding shaft (213) and the third unwinding shaft (214), the three unwinding shafts are arranged in an equilateral triangle shape and surround the first switching shaft and are arranged in parallel with the first switching shaft, and the rotation of the first switching shaft can drive the three unwinding shafts to synchronously rotate.

Description

Radium-shine transfer membrane unwinding device

RELATED APPLICATIONS

The application is a divisional application of Chinese patent application 2019108231562 filed on 9, 2 and 2019.

Technical Field

The invention relates to the field of machinery, in particular to a novel unwinding device for a laser transfer film.

Background

The laser stamping transfer process is widely applied to the packaging and printing industry. The process can copy a layer of flash and bright holographic pattern which is consistent with the surface pattern of the common laser film on the surface of a printed product through laser imprinting transfer, so that the surface of the package presents bright, colorful, invisible and vivid effects, and a novel aesthetic feeling is brought to people.

The existing laser transfer machine generally comprises an unwinding device, a pressing device, a photocuring device, a peeling device and a winding device, wherein the unwinding device, the pressing device, the photocuring device, the peeling device and the winding device are sequentially arranged along the conveying direction of a transfer film. The pressing device comprises an impression cylinder, a pressing roller and a pressing roller position switching mechanism, the pressing roller is connected with a power output end of the pressing roller position switching mechanism, and when the impression transfer is carried out, the pressing roller is pressed on the impression cylinder. When the transfer printing is carried out, the coiled transfer film is placed on the unreeling device, the transfer film is pressed with a printing stock coated with the photocuring adhesive in advance when passing through the pressing device, then the transfer film is cured by the photocuring device and then peeled by the peeling device, and the peeled plastic film is coiled by the reeling device, so that the pictures and texts on the transfer film are imprinted and transferred onto the paperboard, and the imprinting transfer of the pictures and texts is realized.

However, when the existing unwinding device is used for impression transfer, because laser transfer films are rolled, after one roll of transfer film is used up, the laser transfer films are required to be stopped for replacement, and even if a high-end imported machine type can be automatically replaced, the cost is high, so that the design of the unwinding device and the winding device of the laser transfer films with independent intellectual property rights and capable of automatically replacing rolls has important significance.

Disclosure of Invention

In view of the above situation, the present invention is to provide a novel laser transfer machine and a corresponding laser transfer film unwinding device, which can solve the above problems.

Specifically, the invention provides a laser transfer film unwinding device (210), which is characterized in that the laser transfer film unwinding device (210) comprises a first switching shaft (211), a first unwinding shaft (212), a second unwinding shaft (213), a third unwinding shaft (214), and a connecting roller (215) arranged between any two unwinding shafts, wherein the first switching shaft (211) is positioned among the first unwinding shaft (212), the second unwinding shaft (213) and the third unwinding shaft (214), the three unwinding shafts are arranged in an equilateral triangle shape and surround the first switching shaft and are arranged in parallel with the first switching shaft, the rotation of the first switching shaft can drive the three unwinding shafts to synchronously rotate,

the splicing roller is characterized in that a splicing tape is wound on each splicing roller (215), the splicing tape is wound on the splicing rollers and is divided into a plurality of sections, any two sections are connected discontinuously, most of the sections are disconnected, only a little of the sections are connected and can be pulled apart through a little of pulling force, the first side surface of the splicing tape is a smooth surface, the second side surface of the splicing tape is an adhesive surface, the adhesive surface of the splicing tape faces outwards, and each section of the splicing tape surrounds the splicing rollers for one circle so that each layer is independent of each other.

In another aspect, the present invention provides a laser transfer machine, including: radium-shine transfer membrane unwinding device, radium-shine transfer membrane coiling mechanism and impression transfer device, the impression transfer device is installed radium-shine transfer membrane unwinding device with between the radium-shine transfer membrane coiling mechanism, its characterized in that, radium-shine transfer membrane unwinding device includes that switching shaft, first reel, second are put the spool, the third is put the spool, arbitrary two are put and set up a linking roller between the spool, the switching shaft is located three first reel, second and put the spool, the third is put in the middle of the spool, the three is put the spool and is equilateral triangle and set up, around the switching shaft and with switching shaft parallel arrangement, the rotation of switching shaft can drive three and put the synchronous rotation of spool.

In a preferred implementation, each joining roller 215 is wound with a joining tape, the joining tape is wound on the joining roller and divided into a plurality of sections, any two sections are connected intermittently, most of the sections are disconnected, only a little connection is performed, the sections can be broken by a little pulling force, the first side surface of the joining tape is a smooth surface, the second side surface of the joining tape is a bonding surface, and the bonding surface of the joining tape faces outwards.

In another preferred implementation manner, the imprinting transfer device comprises an imprinting mechanism, an ultraviolet light oil curing mechanism and a stripping mechanism, and the stripping mechanism is arranged behind the imprinting mechanism.

In another preferred embodiment, each engagement roller extends from the side of the transfer machine frame through a movable strut into between the two unwinding shafts, the strut being operable by a drive motor to drive the engagement roller between the two positions.

In another preferred implementation mode, the paper-cutting machine further comprises a die-cutting device, the die-cutting device is arranged at the lower part of the impression transfer device and is used for conveying printed matters with the impression transfer device through a conveying belt, the die-cutting device comprises a paper conveying mechanism, a die-cutting action mechanism, a die-cutting plate and a waste removing mechanism, the die-cutting action mechanism comprises an upper die-cutting platform and a lower die-cutting platform, the die-cutting plate is arranged on the lower surface of the upper die-cutting platform and is fixedly connected with the upper die-cutting platform and can move along with the up-and-down reciprocating motion of the upper die-cutting platform, and redundant die-cutting blades are added to the cut-off area inside any paperboard.

In another preferred implementation mode, the laser unreeling device further comprises a die cutting device, one of the three unreeling shafts is located at the top and is approximately flush with the stamping transfer operation area of the stamping transfer device, the other two unreeling shafts are located at the bottom, the topmost unreeling shaft is in an operating state and is used for unreeling, and the laser reels on the other two unreeling shafts are in a standby state.

In another preferred implementation mode, the laser transfer film winding device comprises a second switching shaft, a first winding shaft and a second winding shaft, the second switching shaft is located between the first winding shaft and the second winding shaft, the two winding shafts are symmetrically arranged and are arranged in parallel to the switching shaft, the switching shaft can rotate to drive the two unwinding shafts to synchronously rotate, the first winding shaft and the second winding shaft work alternately, a bonding tape with a bonding surface facing outwards is pre-installed on the surface of the winding shaft in a standby state, and a cutting device is arranged between the first winding shaft and the second winding shaft. The arrangement in the subsequent embodiment is used as an example, the winding shaft in work is positioned on the left side and the other winding shaft is positioned on the right side in the initial state, when the winding shaft needs to be replaced, the clockwise rotating switching shaft enables the winding shaft on the right side to rotate clockwise, the winding shaft winds from the lower part and is bonded with the transfer film, and then the transfer film is cut along the edge of the new winding shaft by utilizing a cutting device through gas cutting or laser cutting, so that the replacement of the winding shaft is realized. Because the rolling is less important than unreeling, the rolling device can adopt the same structure as the unreeling device, also can adopt the above structure of only two rolling rollers, only sets up laser cutting or gas cutting equipment between two rolling rollers, cuts off when changing the rolling roller.

In another preferred implementation mode, the device further comprises a waste cleaning mechanism, and the waste cleaning mechanism adopts a pneumatic-mechanical combination mode to clean waste.

The waste cleaning mechanism is arranged at the downstream of the die cutting action mechanism and used for receiving the die-cut paperboard and performing waste cleaning treatment.

In another preferred implementation, the die-cutting plate has a die-cutting edge corresponding to the die-cutting pattern.

Technical effects

The unwinding device for the laser transfer film can realize simple, robust and repeatedly-operated roll feeding continuous operation, can change rolls in the process of the transfer machine, and cannot damage workers. The invention has simple structure, can operate circularly, only slightly pause printing for several periods during switching, and saves time. The invention can realize low-cost continuous unreeling.

In addition, in a preferred implementation mode, the laser transfer machine further comprises a die cutting device for performing nondestructive cutting on the laser-transferred paperboard or other printing bearing plates, and the die cutting device can effectively avoid the edge scraping condition in the die cutting and waste removing process.

Drawings

Fig. 1 is a schematic structural diagram of a laser transfer machine in embodiment 1 of the present invention.

Fig. 2 is a schematic structural diagram of an unwinding device in embodiment 1 of the present invention;

FIG. 3 is a schematic view of the construction of a joining roller in embodiment 1;

fig. 4 is a schematic structural diagram of a laser transfer machine in embodiment 2 of the present invention

Fig. 5 is a schematic diagram of a cutting pattern of a full-cut area inside a paperboard by the die cutting device in embodiment 2 of the present invention, that is, a structural diagram of redundant die cutting edges added at positions corresponding to hollowed-out areas in the die cutting edges, of course, the shapes of the hollowed-out areas are often irregular, and for irregular shapes, two diagonal directions of the longest hollowed-out areas are firstly determined, and a substantially rectangular shape is formed by taking four vertexes (or positions close to the vertexes) of the longest diagonal directions as vertexes, in which the die cutting of the shapes in the drawing is increased;

FIG. 6 is a schematic structural view of a counter roller in the waste disposal mechanism in example 2 of the present invention;

fig. 7 shows a partially enlarged view of the opposite portion in the counter roll in example 2.

Detailed Description

The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.

As shown in fig. 1, the laser transfer machine of this embodiment includes a laser transfer film (or laser film) unwinding device 210, a laser transfer film winding device 220, and an embossing transfer device 230, where the embossing transfer device is installed between the laser transfer film unwinding device and the laser transfer film winding device, and the embossing transfer device may adopt a common embossing transfer device, and generally includes an embossing mechanism, an ultraviolet light oil curing mechanism, and a peeling mechanism, and the embossing transfer device is not described herein.

The focus of the embodiment is a laser transfer film (or laser film) unwinding device 210 and a laser transfer film winding device 220.

The laser transfer film unwinding device 210, the laser transfer film winding device 220 and the embossing transfer device 230 can guide the transfer film through a plurality of guide rollers, so that the transfer film winds above the transfer platform, and after embossing transfer is performed through the embossing transfer device, the laser pattern is transferred to a specific area of a product to be printed, and detailed description is omitted here. The product to be printed is conveyed by a conveyor belt 251.

As shown in fig. 2-3, the laser transfer film unwinding device 210 includes a switching shaft 211, a first unwinding shaft 212, a second unwinding shaft 213, a third unwinding shaft 214, and a connecting roller 215 disposed between any two unwinding shafts, wherein the switching shaft 211 is disposed between the three first unwinding shafts 212, the second unwinding shaft 213, and the third unwinding shaft 214, the three unwinding shafts are disposed in an equilateral triangle shape and are disposed around the switching shaft and parallel to the switching shaft, and the rotation of the switching shaft can drive the three unwinding shafts to rotate synchronously. Each engagement roller 215 is wrapped with an engagement tape that is wrapped around the engagement roller, divided into multiple layers, each layer looped independently, the endless tape of each layer being provided with discontinuities, i.e., breaks upon pulling, such that the disengagement roller adheres to the transfer film, with a discontinuous bond meaning that most of the area is broken, only a few bonds, can be broken by a few pulls, but appears continuous before being broken. The connecting belt is an adhesive belt with an outward adhesive surface.

Each engagement roller 215 extends from the side of the transfer machine frame through a movable strut 216 into between the two unwinding shafts, the strut 216 being able to drive the engagement roller 215 between the two positions under the action of a drive motor. As shown in the figure, in this embodiment, the rightmost unreeling shaft is in a working state, unreels downwards, and unreels, and the laser reels on the other two unreeling shafts are in a standby state. Take the linking roller of clockwise low reaches of reel-off on the rightmost side as an example, when it was in the first position, lie in the reel-off below and lean on the left position, parallel with the reel-off, lean on left in order to avoid gluing the transfer film mistake, after accomplishing linking work, the linking roller can stretch under the drive of branch until being close to perpendicularly with the reel-off, reach its second position. The connecting roller can rotate around the shaft of the connecting roller, the rotation can be driven by a small motor, or the connecting roller can be driven by the transfer film to rotate without a driving device after the transfer film is bonded.

In this embodiment, the stamping mechanism adopts a common stamping device, for example, the stamping device includes a first conveying roller, a second conveying roller, and a stamping platform, and the stamping platform is disposed between the two conveying rollers. Wait to emboss cardboard or other products and get into from the left side one end of impression equipment and reach first transfer roller, reach the impression platform through first transfer roller conveying, laser transfer film is around waiting to emboss the cardboard from the impression platform top, sets up actuating mechanism above the impression platform to the pattern to on the laser transfer film is rendition. Laser transfer membrane can get into impression platform top from first transfer roller one side, and from the coiling of second transfer roller one side back to take-up device, the winding is on the rolling axle. The action mechanism may be an embossing roller or an embossing station, for example, embossing can be performed by an embossing roller arranged on the right side of the first conveying roller, or a conveying roller in the feeding direction can be used as the embossing roller, and ultraviolet curing is required on an embossing platform. The conveying roller and the platen roller may be driven by a drive motor.

When the imprinting transfer is carried out, firstly, a laser transfer film with laser patterns is placed on a laser transfer film unreeling device, and the laser pattern surface of the laser transfer film faces towards a printed matter; then, the imprinting transfer machine is connected with various printers through a printed matter input mechanism, so that printed matters printed with ultraviolet light-curing printing ink output by the printers can be transmitted to the imprinting mechanism of the imprinting transfer device through the printed matter input mechanism, and the imprinting mechanism presses the laser pattern surface of the laser transfer film and the ultraviolet light-curing printing ink or the gloss oil surface of the printed matters to enable the laser pattern to be imprinted on the ultraviolet light-curing printing ink or the gloss oil; then, the laser transfer film and the printed matter which are pressed together are conveyed to a stripping mechanism by a conveying mechanism, and during the conveying process of the conveying mechanism, an ultraviolet light oil curing mechanism above the conveying mechanism carries out ultraviolet light oil curing on the laser transfer film and the printed matter which are pressed together; after the ultraviolet light oil is solidified, the peeling mechanism peels the laser transfer film and the printed matter, so that the laser pattern on the laser transfer film is imprinted and transferred onto the printed matter, the peeled laser transfer film is recovered by the laser transfer film recovery and winding device, and the peeled printed matter is conveyed to the printed product intermediate conveying mechanism or the die cutting device by the printed product output mechanism; and (4) after die cutting, removing and recycling the die cutting scraps and collecting die cutting products. The process of transfer is well known in the art and will not be explained further herein.

The automatic roll changing of the unwinding device is realized in this way. First, under normal operating conditions, any one of the three unreeling shafts is in an operating position, for example, on the rightmost side or the side closest to the platen. For example, when the first unwinding shaft 212 is in the working position, the other two unwinding shafts are in a standby state, the first engaging roller 215 between the first unwinding shaft 212 and the second unwinding shaft 213 is in a standby state, and the outside of the first engaging roller is wound with an engaging tape, which may be a single-layer ring with an opening or a multi-layer weak connection. The front end of the transfer film on the second unwinding shaft 213 is adhered to the rear half of the splicing tape. When the use of the transfer film on the first unwinding shaft 212 is finished (for example, when a finishing mark at the end of the transfer film is detected by a sensor or the tension of the transfer film exceeds a predetermined value by a tension sensor, different transfer films need to be set in a targeted manner, which is easily realized by those skilled in the art and will not be described in detail herein), the driving mechanism for driving the switching shaft 211 controls the switching shaft to rotate counterclockwise by a predetermined angle, so that the joining roller 215 moves upward, the front half part of the adhesive tape thereon is pressed against and bonded to the transfer film, so that the front half part of the adhesive tape on the joining roller is bonded to the previous transfer film, and the rear half part of the adhesive tape is bonded to the second transfer film, so as to connect the front and rear transfer films. The transfer film that has been bonded together is positioned inside the splice roller, and then the splice roller 215 is driven to unwind and straighten (e.g., the splice roller 215 is substantially perpendicular or nearly perpendicular to the axis of the switch roller when unwound as shown in fig. 3) to its second position, which is broken by only a small amount of tension due to the weak bond (intermittent bond) between any two sections of the adhesive tape on the splice roller 215, so that the adhesive tape that has been bonded to the transfer film is released from the splice roller during the unwinding of the driven splice roller. If the tail end of the laser transfer film on the first unwinding shaft is pressed on the roller of the transfer film in a virtual mode, cutting is not needed, the residual transfer film is attached to the transfer film on the second unwinding shaft and continuously moves to the end and is wound on the recovery roller because the residual transfer film is positioned above the second unwinding shaft, and imprinting is paused for a plurality of cycles during switching, but the transfer film does not stop. If the transfer film is fixed to its roll, a laser cutting or gas cutting device is provided between the first unwinding roll 212 and the joining roll 215 in order to detach the transfer film from the used unwinding roll, but this is less so.

Next, further rotate the switching axle, drive three and unreel the axle anticlockwise rotation, thereby make the second unreel the axle and reach operating position, first unreel the axle and get back to the upper left position of changing a roll, the shell of laser transfer machine sets up the apron that can open in the position of changing a roll, the staff lifts the apron and just can change a roll the operation, when changing a roll, draw out one section with the front end portion of transfer film, bond the back half section of the splicing tape on the linking roller between first unreeling axle and the third unreeling axle, and will launch (or will call rotatory near 90 degrees) linking roller when changing a roll and withdrawing to be parallel with the switching axle, get back to its first position. The unfolding of the joining roller can be realized by the movement of a support rod 218 connected between the root of the support rod 216 and the side connecting rod 217 on the side connecting rod 217, a sliding groove is arranged on the side connecting rod 217, one end of the support rod 218 is positioned in the sliding groove, the other end of the support rod 218 is fixed with the joining roller, when the unfolding is needed, the side connecting rod 217 is driven by a driving motor or other driving equipment to move towards one side close to the joining roller (upwards moving in the figure 3), and vice versa when the folding is needed. It should be noted that during the change of the roll, it is necessary to pause the printing for several cycles, restart the printing when the transfer film on the new roll completely covers the transfer station, and during the change of the roll, the transfer roller can be adjusted to increase the distance between the transfer roller and the transfer table properly, to allow a smoother change of the roll and to avoid the adhesive tape from getting stuck in the transfer roller gap.

The laser transfer film recovery device can be the same as the unwinding device in structure, but the recovery process does not need to be as complicated as the connection of two transfer films does not need to be considered. For example, laser transfer membrane coiling mechanism includes second switching axle, first rolling axle, second rolling axle, and the second switching axle is located between first rolling axle and the second rolling axle, and two rolling axles are the symmetry and set up, and with second switching axle parallel arrangement, the rotation of second switching axle can drive two and unreel the synchronous rotations of axle, and first rolling axle and second rolling axle alternate work, and the rolling axle surface that is in standby state is pre-installed and is bonded the outside bonding area of face, sets up cutting device between first rolling axle and the second rolling axle. The arrangement in the subsequent embodiment is used as an example, the winding shaft in work is positioned on the left side and the other winding shaft is positioned on the right side in the initial state, when the winding shaft needs to be replaced, the clockwise rotating switching shaft enables the winding shaft on the right side to rotate clockwise, the winding shaft winds from the lower part and is bonded with the transfer film, and then the transfer film is cut along the edge of the new winding shaft by utilizing a cutting device through gas cutting, mechanical cutting or laser cutting, so that the replacement of the winding shaft is realized. In addition, two winding devices can be arranged to respectively recycle the two parts of the transfer film after being peeled.

The key of continuous unreeling lies in the unreeling device, and each reeling shaft can be wound with more transfer films, so even if a common reeling device is adopted, as long as unreeling is continuous, reeling can be continuously carried out as long as the reeling shaft is allowed to wind for more circles, but unreeling is different, the specification of each roll of transfer film is standard, and the transfer films need to be replaced when being used up.

Example 2

As shown in fig. 4, the laser transfer machine of the present embodiment includes a laser transfer film (or laser film) unwinding device 210, a laser transfer film winding device 220, an embossing transfer device 230, and a die cutting device.

Laser transfer film unwinding device 210 includes that switching shaft 211, the first reel 212 of putting, the second is put reel 213, the third is put reel 214, arbitrary two are put and are set up one and link up roller 215 between the reel, and switching shaft 211 is located the three middle of putting the reel, and the three reel of putting is equilateral triangle and sets up, around the switching shaft and with switching shaft parallel arrangement, the rotation of switching shaft can drive three reel synchronous revolution of putting.

The unwinding device and the winding device in this embodiment are the same as those in embodiment 1, except that an additional die cutting device is further added in this embodiment. The die cutting device is arranged at the lower stream of the impression transfer device and is used for conveying printed matters with the impression transfer device through a conveying belt, the cutting device comprises a die cutting action mechanism 241, a die cutting plate 242 and a waste removing mechanism 243, the paper boards output by a second conveying roller are directly or conveyed to a position between the die cutting action mechanism 241 and a die cutting substrate through the conveying belt, the die cutting action mechanism can be driven by another motor and comprises an upper die cutting platform and a lower die cutting platform, the die cutting plate is arranged on the lower surface of the upper die cutting platform and is fixedly connected with the upper die cutting platform and can move along with the up-and-down reciprocating motion of the upper die cutting platform, and redundant die cutting edges are added to the cut area inside any paper board in the die cutting plate.

Front, side and/or rear gauges may be provided around the lower platform to enable the target sheet to be brought to a predetermined position, a number of reports exist in the prior art of such constructions and are not described in detail herein.

The waste removing mechanism 243 is disposed downstream of the die cutting platform, and after waiting for the die cutting to be completed, the die-cut paper boards or other cut paper boards are conveyed to the waste removing mechanism 243 downstream by the conveyor belt.

The existing waste cleaning mechanism has the biggest defect that due to the fact that roller jacking or large wind force direct blowing is adopted, in the waste cleaning process, due to the fact that die cutting edges are cut neatly in the paperboard die cutting process, the edges of medium and thick paperboards with high hardness are relatively sharp, when waste is cleaned, cut-off portions are outwards separated along the direction perpendicular to a paper surface under the action of pressure, scraping can be formed on the edges of reserved portions of the paperboards, the edges of target products in the paperboards can be scraped frequently, edge burrs or layering can occur, and product quality is affected. The edge scraping has little influence on products needing to be sealed at the edge inside subsequently, but has adverse influence on customer experience for hollow products or other products needing to be exposed at the edge.

In view of the above problem, the applicant of the present embodiment proposes a waste removing mechanism, which is tested to effectively reduce the problem of edge scraping during the waste removing process.

Specifically, in the present embodiment, in order to reduce the edge scraping phenomenon during the waste cleaning process, an improvement is first made in the design of the die cutting plate. Firstly, on the basis of a normal design of a die cutting plate, redundant die cutting edges are added in the range of a die cutting blade corresponding to the area in the die cutting plate for the cut area or the cut area of an important part in any paperboard, the redundant die cutting edges are provided with a first part and a second part, the first part is a quadrangle or a pentagon, a gap is formed between two adjacent sides of the quadrangle or the pentagon, the second part is a plurality of radial edges, the radial edges extend outwards from the side edges of the quadrangle or the pentagon in a radiation mode, and every two radial edges form a certain included angle with each other.

As shown in fig. 5, which is a schematic structural diagram of redundant die cutting edges added at positions corresponding to the hollowed-out areas in the die cutting edge in embodiment 2, certainly, the shapes of the hollowed-out areas are often irregular, and for irregular shapes, the longest two diagonal directions of the hollowed-out areas are determined first, and a substantially rectangular or rectangular shape is formed by using four vertexes or positions close to the vertexes of the longest diagonal directions as vertexes (or positions close to the vertexes, mainly to form a regular shape). The adjacent sides of the quadrilateral have a gap therebetween (which is reserved to be large enough to avoid snapping) that subtends a diagonal position (i.e., a relatively long region in the cut-away portion), and a plurality of radial edges that extend radially outward from the sides of the quadrilateral, the radial edges pointing toward the short sides in the cut-away region.

When carrying out clear useless, clear useless mechanism includes transmission board, a pair of major diameter gyro wheel, fan, mesh, waste product collection box. The circumference of the large-diameter roller is equal to or slightly greater than the length of the paper boards, the conveying speed of the paper boards is controlled so that the roller just presses one paper board per rotation (or a part of blank rotating area is reserved in consideration of conveying clearance between adjacent paper boards, namely, the length of each rotation of the roller is equal to the length of the paper boards plus the length of the paper board clearance), the upper roller is provided with a protrusion matched with the shape of the first part of the redundant die-cutting blade at a corresponding position, the lower roller is provided with a recess at a corresponding position of the cut-off area, the recess corresponds to the cut-off area, the planar size of the recess is greater than that of the protrusion, and the recess depth is matched with that of the corresponding protrusion. If there are multiple cut-out regions, there are multiple pairs of protrusions and depressions.

When the waste removing mechanism works, firstly, in the die cutting process, redundant die cutting is carried out on the integral elimination area in the paperboard, so that the area needing integral elimination is die-cut into the non-integral paperboard, and an area which is provided with a central part and four corner parts and is connected with the central part in the diagonal direction is formed. Then, the paper boards after die cutting are transferred to a waste removing mechanism through a conveying platform, a pair of large-diameter rollers which are distributed up and down are used for conveying the paper boards, as shown in figures 6-7, the central part of the area to be removed is jacked, the four corners are pulled through the residual connecting parts between the central part and the four corners, after the paper boards are output from the roller parts, the part to be removed is basically disconnected with the rest parts of the paper boards, most of the area to be removed is carried by the lower rollers along with the rolling of the rollers and rotates downwards to fall into a waste recycling box below the rollers, if part of the area remains on the paper boards, the paper boards are further conveyed to a conveying area with meshes below, and the area to be removed is further removed through wind power from the upper part to the lower part through a powerful fan. The cut-off portion is caused to fall off through the mesh and into the used paper recovery box.

The waste cleaning mechanism adopts a waste cleaning mode of accurately bearing force in the center and moving in four corners for the exposed hollow area, gives sufficient deformation space for the removed area, removes the waste from the whole material in a non-vertical manner, and basically eliminates the problem of scraping the edge of a thicker material.

While the principles of the invention have been described in detail in connection with the preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing embodiments are merely illustrative of exemplary implementations of the invention and are not limiting of the scope of the invention. The details of the embodiments are not to be interpreted as limiting the scope of the invention, and any obvious changes, such as equivalent alterations, simple substitutions and the like, based on the technical solution of the invention, can be interpreted without departing from the spirit and scope of the invention.

Claims

1. A laser transfer film unwinding device (210) is characterized in that the laser transfer film unwinding device (210) comprises a first switching shaft (211), a first unwinding shaft (212), a second unwinding shaft (213), a third unwinding shaft (214), and a connecting roller (215) arranged between any two unwinding shafts, wherein the first switching shaft (211) is positioned among the first unwinding shaft (212), the second unwinding shaft (213) and the third unwinding shaft (214), the three unwinding shafts are arranged in an equilateral triangle shape and surround the first switching shaft and are arranged in parallel with the first switching shaft, the rotation of the first switching shaft can drive the three unwinding shafts to synchronously rotate,

2. The laser transfer film unwinding device (210) according to claim 1, wherein each joining roller (215) extends from a side of the transfer machine frame to between two unwinding shafts through a movable support bar, and the support bar can drive the joining roller (215) to switch between two positions under the action of a driving motor.

3. The laser transfer film unwinding device (210) according to claim 1, further comprising a die cutting device, wherein the die cutting device is disposed at a downstream of the impression transfer device where the laser transfer film unwinding device (210) is mounted, and is configured to transmit printed matters with the impression transfer device through a transmission belt, the die cutting device comprises a paper conveying mechanism, a die cutting action mechanism, a die cutting plate and a waste removing mechanism, the die cutting action mechanism comprises an upper die cutting platform and a lower die cutting platform, the die cutting plate is mounted on a lower surface of the upper die cutting platform and is fixedly connected with the upper die cutting platform and can move along with the up-and-down reciprocating movement of the upper die cutting platform, and redundant die cutting edges are added to a cut area inside any one paperboard in the die cutting plate.

4. The laser transfer film unwinding device (210) of claim 1, wherein one of the three unwinding shafts is located at the top and is substantially flush with the embossing transfer operation area of the embossing transfer device, the other two unwinding shafts are located at the bottom, the uppermost unwinding shaft is in a working state for unwinding, and the laser rolls on the other two unwinding shafts are in a standby state.

5. The utility model provides a laser transfer membrane coiling mechanism (220), its characterized in that, laser transfer membrane coiling mechanism (220) include second switching axle, first rolling axle, second rolling axle, and the second switching axle is located between first rolling axle and the second rolling axle, and two rolling axles are the symmetry and set up, and second switching axle parallel arrangement, and the rotation of second switching axle can drive two rolling axle synchronous rotations, and first rolling axle and second rolling axle alternate work are installed in advance on the rolling axle surface that is in standby state and are bonded the outside bonding area of face, sets up cutting device between first rolling axle and the second rolling axle.

6. A laser transfer film winding and unwinding device, comprising the unwinding device (210) of claim 1 and the laser transfer film winding device (220) of claim 5, which are oppositely arranged on two sides and above the stamping device.