Roll material printing production line and production method comprising same

Abstract

The invention discloses a reel material printing production line and a production method comprising the reel material printing production line, the reel material printing production line comprises an unwinding system and a winding system, a monitoring device and a traction device are arranged between the unwinding system and the winding system, the monitoring device is used for monitoring the position of a reel material released by the unwinding system, and the traction device is used for traction of the reel material released by the winding system. The traction device is arranged on the unwinding system and used for adjusting the position of the coil stock in the unwinding direction, and the monitoring device is electrically connected with the traction device. The monitoring device and the traction device are arranged to adjust the position of the coil stock released by the unwinding system relative to the winding system in the production line, and correction can be conducted when the position of the coil stock deviates from the preset position due to the fact that the unwinding speed is too high or too low according to the actual machining requirement; and the printing precision of the composite package is improved, so that the pattern of each layer of package is located in the target area and forms a new pattern after being composited.

Description

Technical Field

[0001] The invention relates to the technical field of positioning printing, and in particular to a web printing production line and a production method thereof. Background Art

[0002] Printing patterns on paper packaging to meet product identification needs is widely used. At present, the main printing method is stacking material printing, specifically, the material to be printed is released through a feeding device and the surface of the material to be printed is printed by a printing machine, and another material to be printed is released according to the feeding speed of the previous material to be printed, and the stacking of the packages to form a composite pattern package is completed. However, for the identification of paper packaging that requires window opening and multi-layer pattern superposition to form a new pattern, the stacking material printing method has the following defects: when multiple layers of paper packaging are stacked to form a composite packaging, the stacked composite packaging is misaligned due to the time difference in starting the feeding device, that is, the part of each layer of pattern in the composite packaging that overlaps to form a combined pattern is misaligned when superimposed, and even part of the pattern deviates from the target area, and the multi-layer packaging cannot be effectively overlapped on the basis of the misaligned pattern in the superposition, resulting in deviation in the window opening. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the defects in the prior art of poor printing accuracy of paper packaging and poor overlap of patterns in each layer of composite packaging formed by stacking multiple layers of paper packaging, and to provide a roll-to-roll printing production line and a production method thereof.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] A web printing production line, comprising an unwinding system and a rewinding system, wherein a monitoring device and a traction device are arranged between the unwinding system and the rewinding system, wherein the monitoring device is used to monitor the position of the web released by the unwinding system, the traction device is arranged on the unwinding system, the traction device is used to adjust the position of the web, and the monitoring device is electrically connected to the traction device;

[0006] When the monitoring device detects that the distance between the coil released by the unwinding system and the winding system is less than a preset value, the monitoring device controls the traction device to adjust the position of the unwinding system in a direction away from the winding system;

[0007] When the monitoring device detects that the distance between the coil released by the unwinding system and the winding system is greater than a preset value, the monitoring device controls the traction device to adjust the position of the unwinding system in a direction close to the winding system.

[0008] In the present scheme, a monitoring device and a traction device are provided so that the position of the coil released by the unwinding system in the production line can be monitored and the coil position can be adjusted accordingly, and the position of the coil can be corrected when it deviates from the predetermined position due to the unwinding speed being too fast or too slow, thereby improving the printing accuracy of the composite packaging, making the pattern of each layer of packaging located in the target area and forming a new pattern after compounding, thereby ensuring the aesthetics of the composite packaging, and at the same time reducing the process of disassembling and re-combining the composite packaging due to the misalignment of each layer of packaging in the composite packaging, thereby saving the processing time of the composite packaging and improving the production efficiency of the composite packaging.

[0009] Preferably, the unwinding system comprises a first unwinding device and a second unwinding device, and the first unwinding device and the second unwinding device are both provided with the monitoring device and the traction device.

[0010] In the present scheme, a first unwinding device and a second unwinding device are provided to discharge materials corresponding to each layer of packaging of the composite packaging. In addition, a monitoring device and a traction device are respectively provided on the first unwinding device and the second unwinding device, so as to control the position of the coiled material released by the first unwinding device and the position of the coiled material released by the second unwinding device in a relatively independent manner, thereby improving the discharge accuracy and the pattern accuracy of the composite packaging.

[0011] Preferably, the web printing production line also includes a printing device, which is respectively arranged on the first unwinding device and the second unwinding device and is used to print positioning marks at different positions on the web released from the first unwinding device and the second unwinding device.

[0012] In the present scheme, a printing device is provided to print patterns and positioning marks in the coils released from the first unwinding device and the second unwinding device. The positioning marks include various forms, so as to improve the pattern accuracy of each layer of the composite packaging. On the basis of ensuring the pattern accuracy of each layer of the composite packaging, the monitoring device and the traction device correspondingly adjust the positions of the coils released by the first unwinding device and the second unwinding device to achieve the accuracy of the composite pattern of the composite packaging when overlapping, thereby avoiding the situation where the pattern is misplaced or even offset out of the target area.

[0013] Preferably, the unwinding system further comprises a third unwinding device, wherein the third unwinding device is disposed between the first unwinding device and the second unwinding device and is used for releasing the isolation roll material.

[0014] In the present scheme, a third unwinding device is provided for releasing an isolation roll material, and the isolation roll material is used to isolate the material coated on the roll material released by the first unwinding device and to isolate the material coated on the roll material released by the second unwinding device, thereby improving the cleanliness of the roll material released by the first unwinding device and the roll material released by the second unwinding device.

[0015] Preferably, the web printing production line further comprises a back coating device and a first curing device which are arranged in sequence, and the back coating device and the first curing device are arranged between the first unwinding device and the printing device.

[0016] In this solution, a back coating device and a first curing device are provided so that the surface of the coil released by the first unwinding device is coated with a certain amount of glue, so that it can be successfully compounded with the coil released by the second unwinding device.

[0017] Preferably, the web printing production line further comprises a window opening device and a gluing device which are arranged in sequence, and the window opening device and the gluing device are arranged between the printing device corresponding to the second unwinding device and the first unwinding device.

[0018] In the present scheme, a window opening device is provided to meet the window opening demand of the composite packaging. The window opening device opens a window for the coil released by the second unwinding device. When the number of packaging layers of the composite packaging is subsequently increased, the window opening can also play a positioning role to improve the positioning accuracy of each layer of the composite packaging, so that the accuracy of the pattern on each layer of packaging is correspondingly improved when it is superimposed. In addition, the gluing device glues the coil released by the second unwinding device so that it can be smoothly compounded with the coil released by the first unwinding device.

[0019] Preferably, the web printing production line further comprises a compound device, a second curing device and a cooling device which are arranged in sequence, and the compound device, the second curing device and the cooling device are arranged between the third unwinding device and the winding system.

[0020] In the present scheme, a compounding device, a second curing device and a cooling device are provided to compound the coils released by the first unwinding device, the second unwinding device and the third unwinding device as a whole, thereby achieving effective compounding of the coil released by the first unwinding device with patterns and positioning marks, the isolation roll released by the third unwinding device, and the coil released by the second unwinding device with windows and patterns, thereby improving the printing accuracy of the composite packaging and reducing the number of steps in the composite packaging processing.

[0021] Preferably, the winding system includes a first winding device and a second winding device, the first winding device is used to wind up the superimposed roll of rolls released by the first unwinding device, the second unwinding device and the third unwinding device, and the second winding device is arranged corresponding to the first unwinding device and is used to wind up the isolation roll released by the first unwinding device.

[0022] In the present scheme, a first winding device is provided to uniformly wind up the coils released by the first unwinding device, the third unwinding device and the second unwinding device after compounding, and a second winding device is used to peel off the isolation roll material in the compounded coil material when the composite packaging needs to be compounded again, that is, to increase the number of composite packaging layers, and to wind up the isolation roll material, so that the compounded coil material can be further compounded to form a new composite packaging.

[0023] A production method of a web printing production line, the production method of the web printing production line is implemented by using the above-mentioned web printing production line, and the production method of the web printing production line comprises the following steps:

[0024] S1. A monitoring device monitors a first positioning mark on a coil released by a first unwinding device of an unwinding system. When the position of the first positioning mark and the winding system is less than a preset value, the monitoring device controls the traction device to adjust the position of the first unwinding device in a direction away from the winding system. When the position of the first positioning mark and the winding system is greater than a preset value, the monitoring device controls the traction device to adjust the position of the first unwinding device in a direction close to the winding system.

[0025] S2, the monitoring device monitors the second positioning mark on the coil released by the second unwinding device of the unwinding system, and when the position of the second positioning mark and the first positioning mark is greater than a preset value, the monitoring device controls the traction device to adjust the position of the second unwinding device in a direction close to the first positioning mark, and the monitoring device also controls the traction device to make the second positioning mark coincide with the first positioning mark; when the position of the second positioning mark and the first positioning mark is less than a preset value, the monitoring device controls the traction device to adjust the position of the second unwinding device in a direction away from the first positioning mark, and the monitoring device also controls the traction device to make the second positioning mark coincide with the first positioning mark;

[0026] S3, releasing the isolation coil of the third unwinding device of the unwinding system between the coils released by the first unwinding device and the second unwinding device, combining them into a whole and winding them through the winding system.

[0027] In this scheme, by monitoring the first positioning mark on the coil released by the first unwinding device, the positional relationship between the first unwinding device and the winding system is adjusted accordingly according to the first positioning mark, so that the position of the coil released by the first unwinding device in the production line is guaranteed, and the positioning mark on the coil released by the first unwinding device is used as a reference, and then the second positioning mark on the coil released by the second unwinding device is monitored, and the second positioning mark is aligned with the first positioning mark according to the first positioning mark to achieve the coincidence of the positioning marks, and the unwinding positions of the first unwinding device and the second unwinding device are adjusted by the monitoring device and the traction device, so that each layer of the composite packaging is always located in the same target area when overlapping and the pattern positioning accuracy is guaranteed, thereby reducing the procedures and processing time required for subsequent adjustment of the pattern of the composite packaging, and in addition, the isolation roll released by the third unwinding device is used to isolate the glue coated on the coil released by the first unwinding device and the second unwinding device from overflowing through the window, so as to ensure the cleanliness of the composite packaging after compounding and facilitate further increasing the number of packaging layers of the composite packaging for the next compounding process.

[0028] Preferably, when the number of stacked layers of the coiled material is greater than three, the following steps are further included after step S3:

[0029] S4, installing the coil after the first winding on the first unwinding device, installing the roll material to be stacked again on the second unwinding device, and winding the isolation roll material released by the first unwinding device through the second winding device of the winding system, identifying the positioning mark on the coil after the first winding by the monitoring device, and when the position of the positioning mark on the coil after the first winding and the first winding device of the winding system is less than a preset value, turning on the traction device and adjusting the position of the first unwinding device in a direction away from the first winding device; when the positioning mark on the coil after the first winding and the position of the first winding device are greater than a preset value, turning on the traction device and adjusting the position of the first unwinding device in a direction close to the first winding device, after the position of the first unwinding device is adjusted, repeating the processes of steps S2 and S3 in sequence.

[0030] In the present scheme, when the number of stacked layers of roll material is greater than three, that is, after the first composite packaging, the paper packaging and the composite packaging continue to be composited, so that the pattern of the composite packaging is further enriched, and even an anti-counterfeiting layer can be added to make the composite packaging have an anti-counterfeiting function, and the composite packaging after the previous composite is repeatedly placed in the first unwinding device. The positioning mark existing in the composite packaging does not need to be printed again to further reduce the process, and the roll material installed on the second unwinding device to be stacked again is printed with the positioning mark and its roll position in the production line is adjusted accordingly according to the positioning mark existing in the composite packaging to meet the processing accuracy of the composite packaging.

[0031] The positive progressive effect of the present invention is that the present invention adjusts the position of the coil released by the unwinding system relative to the winding system in the production line by arranging a monitoring device and a traction device, that is, the position of the coil along the winding direction of the winding system is adjusted, so that the coil released by the unwinding system can be corrected according to actual processing needs before winding when the position of the coil is offset from the predetermined position due to the unwinding speed being too fast or too slow, thereby improving the printing accuracy of the composite packaging, so that the pattern of each layer of packaging is located in the target area and forms a new pattern after compounding, thereby ensuring the aesthetics of the composite packaging, and at the same time reducing the process of subsequently disassembling and re-combining the composite packaging due to the misalignment of each layer of packaging in the composite packaging, saving the processing time of the composite packaging, and improving the production efficiency of the composite packaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of a web printing production line according to an embodiment of the present invention.

[0033] Figure 2 It is a schematic diagram of the first layer packaging structure in a composite packaging according to an embodiment of the present invention.

[0034] Figure 3 It is a schematic diagram of the structure of the composite packaging of the first layer of packaging and the second layer of packaging in one embodiment of the present invention.

[0035] Figure 4 It is a schematic diagram of the structure of the composite packaging of the first layer packaging, the second layer packaging and the third layer packaging in one embodiment of the present invention.

[0036] Figure 5 This is a schematic diagram of the finished product structure of a composite package according to an embodiment of the present invention.

[0037] Figure 6 The present invention is a production flow chart of a web printing production line according to an embodiment of the present invention.

[0038] Description of reference numerals:

[0039] Unwinding system 1

[0040] The first unwinding device 11

[0041] The second unwinding device 12

[0042] The third unwinding device 13

[0043] Winding system 2

[0044] The first winding device 21

[0045] The second winding device 22

[0046] Traction device 3

[0047] Printing device 4

[0048] Positioning mark 41

[0049] Back coating device 5

[0050] First curing device 6

[0051] Window opening device 7

[0052] Window 71

[0053] Gluing device 8

[0054] Composite device 9

[0055] The second curing device 10

[0056] Cooling device 20 DETAILED DESCRIPTION

[0057] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0058] This embodiment provides a web printing production line, the specific structure of which is as follows Figure 1 As shown, the web printing production line includes an unwinding system 1 and a rewinding system 2, wherein the unwinding system 1 is used to release the web, and the rewinding system 2 is used to rewind the web released by the unwinding system 1 to form a web for further composite processing, wherein a monitoring device (not shown in the figure) and a traction device 3 are provided between the unwinding system 1 and the rewinding system 2, wherein the monitoring device is used to monitor the position of the web released by the unwinding system 1 relative to the rewinding system 2 in the production line, the traction device 3 is provided on the unwinding system 1 and the traction device 3 is used to adjust the position of the web along the unwinding direction, and the monitoring device is electrically connected to the traction device 3.

[0059] Specifically, the monitoring device selects a structure used in the prior art to monitor the position of the coil, such as an image monitoring device, a speed sensor, etc. The traction device selects a structure used in the prior art to adjust the position of the unwinding system 1, such as a drive motor to drive the unwinding system 1 to move, or a carrier carrying the unwinding system 1 on the assembly line module along the unwinding direction, etc. This is the prior art and will not be elaborated on here. The monitoring device is used to monitor the position of the coil and transmit the signal to the main control board of the production line. The main control board starts the traction device 3 according to the different information of the signal, and the traction device 3 adjusts the position of the coil accordingly. The monitoring device can be arranged directly above the unwinding system 1. Of course, in other implementations of the present embodiment, it can also be arranged directly below the unwinding system 1. The surface of the coil released by the unwinding system 1 is monitored to achieve the positioning of the position of the coil in the production line. The traction device 3 is used to move along the extension direction of the production line. According to the data of the monitoring device, the position of the unwinding system 1 is adjusted along the extension direction of the production line accordingly to achieve correction when the position of the coil is offset from the predetermined position when the unwinding speed of the unwinding system 1 is too fast or too slow. The offset between the position of the coil and the predetermined position mainly includes that the coil is too close to the winding system 2, or the coil is too far away from the winding system 2. When the monitoring device detects that the distance between the coil released by the unwinding system 1 and the winding system 2 is less than the preset value, the monitoring device controls the traction device 3 to move along the extension direction away from the winding system 2. Directionally adjust the position of the unwinding system 1. When the monitoring device detects that the distance between the coil released by the unwinding system 1 and the winding system 2 is greater than a preset value, the monitoring device controls the traction device 3 to adjust the position of the unwinding system 1 in the direction close to the winding system 2. The preset value is obtained through multiple experiments to be used as a reference for producing composite packaging. This is a prior art and will not be described in detail here. The monitoring device and the traction device 3 adjust the position of the coil so that when processing paper packaging, the production line can compound each layer of packaging in the composite packaging by superimposing the pattern on each layer of packaging to form a composite pattern. The accuracy is improved accordingly, avoiding the problem of misalignment between the layers of packaging in the target area of ​​the composite pattern due to different unwinding speeds, and even the pattern of some single-layer packaging deviates from the target area, resulting in the composite pattern printing failing to meet the standards and poor yield rate. At the same time, the process of dislocation of each layer of packaging in the composite packaging and subsequent disassembly and re-combination of the composite packaging is reduced, saving the processing time of the composite packaging and improving the production efficiency of the composite packaging.

[0060] In this embodiment, the unwinding system 1 includes a first unwinding device 11 and a second unwinding device 12 , and the first unwinding device 11 and the second unwinding device 12 are both provided with a monitoring device and a traction device 3 .

[0061] Specifically, the first unwinding device 11 and the second unwinding device 12 are both non-stop double-sided winding devices. The non-stop double-sided winding device is a structure for releasing coils in the prior art, which specifically includes two rollers, one of which is used to release the coil, and the other roller guides the released coil so that the coil can smoothly flow out of the first unwinding device 11 or the second unwinding device 12. The traction device 3 is arranged between the two rollers and is connected to the base supporting the two rollers. The traction device 3 drives the base to move along the unwinding direction to thereby adjust the position of the coil released by the first unwinding device 11 and the second unwinding device 12 in the production line along the unwinding direction. In this embodiment, the coil released by the first unwinding device 11 is the first layer of packaging in the composite packaging, and the coil released by the second unwinding device 12 is The material is the second layer of packaging in a composite package as an example for explanation, by setting a first unwinding device 11 and a second unwinding device 12 to discharge the material corresponding to each layer of packaging of the composite package, and in addition, a monitoring device and a traction device 3 are respectively set on the first unwinding device 11 and the second unwinding device 12, so as to control the position of the coiled material released by the first unwinding device 11 and the position of the coiled material released by the second unwinding device 12 in a relatively independent manner, thereby improving the material discharge accuracy and the pattern accuracy of the composite package, and avoiding the situation that the coiled material released by the second unwinding device 12 still cannot meet the composite pattern processing accuracy of the composite package after the traction device 3 in the second unwinding device 12 is adjusted due to the coiled material released by the first unwinding device 11 being too close or too far relative to the winding system 2.

[0062] Furthermore, the web printing production line also includes a printing device 4, which is respectively arranged on the first unwinding device 11 and the second unwinding device 12 and is used to print positioning marks 41 at different positions on the web released from the first unwinding device 11 and the second unwinding device 12.

[0063] Specifically, the printing device 4 on the first unwinding device 11 is arranged between the first unwinding device 11 and the winding system 2, and the printing device 4 on the second unwinding device 12 is arranged between the second unwinding device 12 and the winding system 2. The printing device 4 selects a structure used in the prior art for printing patterns on roll materials, such as a water-based ink printer, and realizes the desired target pattern printed on the roll material by pre-setting the color and shape of the printed pattern. This is the prior art and will not be elaborated on here. The printing device 4 arranged on the first unwinding device 11 is used for printing a first positioning mark and a pattern on the coil released by the first unwinding device 11, and the printing device 4 arranged on the second unwinding device 12 is used for printing a second positioning mark and a pattern on the coil released by the second unwinding device 12. In this embodiment, the first positioning mark and the second positioning mark are collectively referred to as positioning marks 41 because they are superimposed on each other during the composite processing of the composite packaging. In fact, when the first layer of packaging is composited with the second layer of packaging, the first positioning mark coincides with the second positioning mark. Only when the second layer of packaging has not yet been composited with the first layer of packaging, the position of the second unwinding device 12 in the production line is adjusted accordingly by monitoring the position of the first positioning mark. The positioning mark 41 includes a positioning line and a positioning point, as well as a correction line for correcting the deviation of the coil along the same horizontal plane and in the vertical direction as the unwinding direction. The positioning mark 41 is monitored by the monitoring device to adjust the position of the first unwinding device 11 in the production line accordingly, that is, the position of the winding system 2, to prevent the first unwinding device 11 from unwinding. Too fast or too slow affects the unwinding of the second unwinding device 12 and causes each layer of packaging in the composite packaging to be misaligned. Similarly, by arranging a printing device 4 on the second unwinding device 12, not only can the required pattern be printed, but also a positioning mark 41 can be printed on the coil during the unwinding process. The positioning mark 41 includes a positioning line, a positioning point and a correction line. The positioning mark 41 is monitored by a monitoring device to adjust the position of the second unwinding device 12 in the production line accordingly, that is, the position of the winding system 2, so that the positioning mark 41 on the coil released by the second unwinding device 12 coincides with the positioning mark 41 on the coil released by the first unwinding device 11, that is, the positioning mark 41 is registered, thereby improving the pattern accuracy of each layer of packaging in the composite packaging. On the basis of ensuring the pattern accuracy of each layer of packaging, the positioning mark 41 is identified by a monitoring device so that the composite pattern in the composite packaging is registered in the target area. The registered composite pattern meets the needs of users and avoids the situation where the pattern is misaligned or even offset from the target area.

[0064] In this embodiment, the unwinding system 1 further includes a third unwinding device 13, which is also a non-stop double-winding device. The third unwinding device 13 is disposed between the first unwinding device 11 and the second unwinding device 12 and is used to release the isolation roll material.

[0065] Specifically, the isolation roll material is actually a roll material used to isolate the roll material released by the first unwinding device 11 and the roll material released by the second unwinding device 12. Its function is to prevent the glue applied on the roll material released by the first unwinding device 11 and the roll material released by the second unwinding device 12 from mixing with each other, and at the same time prevent the applied glue from flowing into the window 71 of the roll material during processing in the second unwinding device 12, so as to improve the cleanliness of the paper packaging and avoid affecting the subsequent processing of the composite packaging.

[0066] In addition, in other embodiments of the present implementation, a monitoring device and a traction device 3 may also be provided on the third unwinding device 13. The unwinding position of the isolation roll material can also be adjusted through the monitoring device and the traction device 3, so that the position of the isolation roll material is consistent with the position of the roll material released by the first unwinding device 11 and the second unwinding device 12, so as to better protect the roll material released by the first unwinding device 11 and the second unwinding device 12, so as to facilitate the composite packaging to be composited again.

[0067] In this embodiment, the web printing production line also includes a correction mechanism (not shown in the figure), which is used to adjust the position of the web along the side of the unwinding system 1 to prevent the web from shifting along the side direction of the unwinding system 1 and causing the composite packaging yield to deteriorate. The correction mechanism uses a structure used in the prior art for correcting the web, and will not be described in detail here.

[0068] In this embodiment, the web printing production line further includes a back coating device 5 and a first curing device 6 which are arranged in sequence. The back coating device 5 and the first curing device 6 are arranged between the first unwinding device 11 and the printing device 4 .

[0069] Specifically, the back coating device 5 is used to apply glue on the upper surface of the coil released by the first unwinding device 11, and the first curing device 6 is used to cure the applied glue. The back coating device 5 and the first curing device 6 are structures used for applying glue and curing on paper packaging in the prior art. Gluing and curing are existing processing technologies for paper packaging, and will not be described in detail here. By providing the back coating device 5 and the first curing device 6, a certain amount of glue is applied to the surface of the coil released by the first unwinding device 11, so that it can be successfully compounded with the coil released by the second unwinding device 12 later.

[0070] At the same time, the web printing production line also includes a window opening device 7 and a glue coating device 8 which are arranged in sequence. The window opening device 7 and the glue coating device 8 are arranged between the printing device 4 corresponding to the second unwinding device 12 and the first unwinding device 11 .

[0071] Specifically, the window opening device 7 is used to perform a window opening 71 on the upper surface of the coil released by the second unwinding device 12, that is, to punch holes in the paper packaging in a designated area, and the gluing device 8 is used to apply glue on the upper surface of the coil released by the second unwinding device 12, wherein the gluing device 8 should avoid applying glue at the window opening 71 when applying glue, so as to avoid the applied glue overflowing from the window opening 71 part onto the surface of the coil, affecting the compounding of the composite packaging and causing certain difficulties for subsequent cleaning. The window opening device 7 and the gluing device 8 select structures used for gluing and opening windows on paper packaging in the prior art. Gluing and window opening 71 are existing processing technologies for paper packaging and will not be elaborated on here. By setting the window opening device 7 to meet the window opening 71 demand of the composite package, the window opening device 7 opens a window 71 for the coil released by the second unwinding device 12, so that when the number of packaging layers of the composite package is increased later, the window 71 can also play a positioning role and improve the positioning accuracy of each layer of the composite package, so that the accuracy of the pattern on each layer of the package is correspondingly improved when it is superimposed. In addition, the gluing device 8 glues the coil released by the second unwinding device 12, so that it can be smoothly compounded with the coil released by the first unwinding device 11 later.

[0072] Furthermore, in this embodiment, the web printing production line also includes a composite device 9, a second curing device 10 and a cooling device 20 which are arranged in sequence, and the composite device 9, the second curing device 10 and the cooling device 20 are arranged between the third unwinding device 13 and the winding system 2.

[0073] Specifically, Figure 1 , Figure 2 and Figure 3As shown, the compounding device 9 and the second curing device 10 are arranged between the third unwinding device 13 and the first unwinding device 11, the cooling device 20 is arranged between the first unwinding device 11 and the winding system 2, the coiled material released by the first unwinding device 11 is processed by the back coating device 5, the first curing device 6 and the printing device 4 to form the first layer of packaging of the composite packaging, the isolation roll material released by the third unwinding device 13 is located between the coiled material released by the first unwinding device 11 and the second unwinding device 12, the coiled material released by the second unwinding device 12 is processed by the printing device 4, the window opening device 7 and the gluing device 8 to form the second layer of packaging of the composite packaging, The isolation roll material and the second layer packaging are transferred to the compounding device 9, the second curing device 10 and the cooling device 20 in sequence to composite the first layer packaging, the second layer packaging and the isolation roll material released by the third unwinding device 13 as a whole, and are rolled up by the rolling system 2 to achieve effective composite of the first layer packaging with the pattern and the positioning mark 41 and the second layer packaging with the window 71 and the pattern and the positioning mark 41. The first layer packaging and the second layer packaging are accurately positioned. According to multiple experiments, the pattern overlap accuracy is controlled within ±0.35mm, which improves the printing accuracy of the composite packaging and reduces the process of composite packaging processing when the pattern is misaligned.

[0074] In this embodiment, the winding system 2 includes a first winding device 21 and a second winding device 22. The first winding device 21 and the second winding device 22 adopt the structure used for winding in the prior art, which will not be described in detail herein. The first winding device 21 is located at one end of the production line and is used to wind up the superimposed rolls of rolls released by the first unwinding device 11, the second unwinding device 12 and the third unwinding device 13, that is, a composite package after the first layer of packaging, the isolation roll material and the second layer of packaging are combined. The second winding device 22 is arranged on the side of the first unwinding device 11 and is arranged corresponding to the discharge port of the first unwinding device 11 and is used to wind up the isolation roll material released by the first unwinding device 11.

[0075] Specifically, Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, when processing composite packaging, for some composite packaging, the number of composite packaging layers is greater than or equal to three, that is, the number of packaging layers excluding the isolation roll material is greater than or equal to three. In this case, it is necessary to increase the number of composite packaging layers again, through the above-mentioned pre-processing of the composite packaging to form a composite packaging with a first layer of packaging and a second layer of packaging, and then place the paper packaging to be added on the second unwinding device 12, and place the composite packaging with the first layer of packaging and the second layer of packaging on the first unwinding device 11, and repeat the processing steps of the composite packaging, that is, gluing, curing and printing positioning marks 41 and opening windows 71, etc. It should be noted that because the composite packaging with the first layer of packaging and the second layer of packaging has been printed with positioning marks 41, when it is composited with the newly added paper packaging, it is only necessary to print the positioning marks 41 on the newly added paper packaging and reposition it through the monitoring device and the traction device 3, and there is no need to reposition the original paper packaging on the original paper packaging. The positioning mark 41 is printed on the composite package again, which saves the processing steps of the composite package and improves the processing accuracy of the composite package. For the composite package with the first layer of packaging and the second layer of packaging, it also includes an isolation roll material. When the composite package is placed on the first unwinding device 11, the isolation roll material is rolled up by the second winding device 22, so that the composite package only has the first layer of packaging and the second layer of packaging, and the newly added paper packaging is the third layer of packaging. After the composite package with only the first layer of packaging and the second layer of packaging is composited with the newly added paper packaging on the production line, a new composite package with the first layer of packaging, the second layer of packaging, the third layer of packaging and the isolation roll material is formed. If it is necessary to further increase the number of layers of the composite package to form a more complex combination pattern, the above steps can be repeated. In addition, the extraction of the isolation roll material after the composite package is processed belongs to the scope of the prior art and will not be elaborated here. The first winding device 21 is provided to uniformly wind up the coils released by the first unwinding device 11, the third unwinding device 13 and the second unwinding device 12 after compounding, and the second winding device 22 peels off the isolation roll material in the compounded coil material when the composite package needs to be compounded again, that is, when the number of composite packaging layers is increased, and winds up the isolation roll material, so that the compounded coil material can be further compounded to form a new composite package.

[0076] In addition, this embodiment further provides a production method of a web printing production line. The production method of the web printing production line is implemented by using the above-mentioned web printing production line. The production method of the web printing production line includes the following steps:

[0077] S1, the monitoring device monitors the first positioning mark on the coil released by the first unwinding device 11 of the unwinding system 1, when the position of the first positioning mark and the winding system 2 is less than a preset value, the monitoring device controls the traction device 3 to adjust the position of the first unwinding device 11 in a direction away from the winding system 2, and when the position of the first positioning mark and the winding system 2 is greater than a preset value, the monitoring device controls the traction device 3 to adjust the position of the first unwinding device 11 in a direction close to the winding system 2;

[0078] S2, the monitoring device monitors the second positioning mark on the coil released by the second unwinding device 12 of the unwinding system 1. When the position of the second positioning mark and the first positioning mark is greater than a preset value, the monitoring device controls the traction device 3 to adjust the position of the second unwinding device 12 in a direction close to the first positioning mark, and the monitoring device also controls the traction device 3 to make the second positioning mark coincide with the first positioning mark; when the position of the second positioning mark and the first positioning mark is less than a preset value, the monitoring device controls the traction device 3 to adjust the position of the second unwinding device 12 in a direction away from the first positioning mark, and the monitoring device also controls the traction device 3 to make the second positioning mark coincide with the first positioning mark;

[0079] S3, releasing the isolation coil of the third unwinding device 13 of the unwinding system 1 between the coils released by the first unwinding device 11 and the second unwinding device 12, combining them into a whole and winding them through the winding system 2.

[0080] Specifically, Figure 2 As shown, the first unwinding device 11 releases the first layer of packaging, and the first layer of packaging is coated with glue and cured by the back coating device 5 and the first curing device 6, and then printed by the printing device 4, so that different positions on the first layer of packaging have first positioning marks, and the monitoring device and the traction device 3 readjust the position of the first unwinding device 11 in the production line according to the first positioning mark and the position of the winding system 2, so as to avoid the situation where the first unwinding device 11 releases the coil too quickly or too slowly, resulting in the subsequent second layer of packaging being unable to overlap with the first layer of packaging.

[0081] like Figure 3As shown, the second unwinding device 12 releases the second layer of packaging, and the second positioning mark is printed on the second layer of packaging by the printing device 4, and the window opening device 7 and the gluing device 8 are used for window opening 71 and gluing. When gluing, the applied glue should be prevented from flowing into the window opening 71. The monitoring device and the traction device 3 adjust the position of the second unwinding device 12 in the production line according to the position of the second positioning mark and the first positioning mark, so that the second positioning mark coincides with the first positioning mark and forms a positioning mark 41 at the same position, thereby realizing precise processing of the composite pattern of the composite packaging and avoiding the situation that the second layer of packaging released by the second unwinding device 12 cannot coincide with the positioning mark 41 of the first layer of packaging after the position of the first unwinding device 11 in the production line is adjusted.

[0082] In addition, the isolation roll material released by the third unwinding device 13 is released between the first layer of packaging and the second layer of packaging to isolate the glue applied on the first layer of packaging and the second layer of packaging. The first layer of packaging, the isolation roll material and the second layer of packaging are compounded in the production line to form a "three-in-one" composite package, and finally reeled by the first reeling device 21 of the reeling system 2 and cured for 24 hours. Curing means making the composite package still for the next processing and use. By adjusting the position of the first unwinding device 11 in the production line and taking the first positioning mark on the first layer of packaging as a reference, the second positioning mark on the second layer of packaging is aligned with it to overlap to form a positioning mark 41, and the unwinding position of the first unwinding device 11 and the second unwinding device 12 is adjusted through the monitoring device and the traction device 3, so that each layer of pattern of the composite package is always located in the same target area when overlapping and the pattern positioning accuracy is guaranteed, thereby reducing the subsequent steps and processing time required for adjusting the pattern of the composite package. In addition, the isolation roll material is used to isolate the glue applied on the first layer of packaging and the second layer of packaging from overflowing through the window 71, thereby ensuring the cleanliness of the composite package after compounding and facilitating further increasing the number of packaging layers of the composite package for the next compounding process.

[0083] like Figure 4 , Figure 5 and Figure 6 As shown, when the number of stacked layers of the coil material is greater than three, the following steps are further included after step S3:

[0084] S4, installing the coil after the first winding on the first unwinding device 11, installing the roll material to be stacked again on the second unwinding device 12, and winding the isolation roll material released by the first unwinding device 11 through the second winding device 22 of the winding system 2, identifying the positioning mark 41 on the coil after the first winding by the monitoring device, and when the position of the positioning mark 41 on the coil after the first winding and the first winding device 21 of the winding system 2 is less than a preset value, connecting the traction device 3 and adjusting the position of the first unwinding device 11 in a direction away from the first winding device 21; when the position of the positioning mark 41 on the coil after the first winding and the first winding device 21 is greater than a preset value, connecting the traction device 3 and adjusting the position of the first unwinding device 11 in a direction close to the first winding device 21, and repeating the processes of step S2 and step S3 in sequence after the position of the first unwinding device 11 is adjusted.

[0085] Specifically, when the number of stacked layers of the composite packaging roll is greater than three, that is, after the first composite packaging, the paper packaging and the composite packaging are continuously composited, so that the pattern of the composite packaging is further enriched to form a new composite packaging, the new composite packaging includes the first layer packaging, the second layer packaging, and the newly added third layer packaging, the roll material of the third layer packaging is installed on the second unwinding device 12, the previous composite packaging having the first layer packaging, the second layer packaging and the isolation roll material is installed on the first unwinding device 11, and the isolation roll material is reeled by the second reeling device 22, so that the previous composite packaging only has the first layer packaging, the second layer packaging and the isolation roll material. The first layer of packaging and the second layer of packaging do not need to print the positioning mark 41 again when they are composited with the third layer of packaging to save processing steps. The positioning mark 41 is printed on the third layer of packaging and is aligned and positioned with the first layer of packaging and the second layer of packaging through the monitoring device and the traction device 3 to form a new composite packaging. The new composite packaging can even add an anti-counterfeiting layer to make the composite packaging have an anti-counterfeiting function. The coil position of the second unwinding device 12 used to install the third layer of packaging in the production line is adjusted accordingly according to the positioning mark 41 existing in the previous composite packaging to meet the processing accuracy of the composite packaging.

[0086] Similarly, when the number of layers of the composite packaging is further increased, it is only necessary to roll up the isolation roll material in the composite packaging having the first layer packaging, the second layer packaging, the third layer packaging and the isolation roll material and install it on the first unwinding device 11, install the newly added paper packaging on the second unwinding device 12 and repeat the above steps.

[0087] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A web printing production line, characterized in that: The web printing production line includes an unwinding system and a rewinding system, a monitoring device and a traction device are provided between the unwinding system and the rewinding system, the monitoring device is used to monitor the position of the web released by the unwinding system, the traction device is provided on the unwinding system, the traction device is used to adjust the position of the web, and the monitoring device is electrically connected to the traction device; When the monitoring device detects that the distance between the coil released by the unwinding system and the winding system is less than a preset value, the monitoring device controls the traction device to adjust the position of the unwinding system in a direction away from the winding system; When the monitoring device detects that the distance between the coil released by the unwinding system and the winding system is greater than a preset value, the monitoring device controls the traction device to adjust the position of the unwinding system in a direction close to the winding system.

2. The web printing production line according to claim 1, characterized in that: The unwinding system comprises a first unwinding device and a second unwinding device, and the first unwinding device and the second unwinding device are both provided with the monitoring device and the traction device.

3. The web printing production line according to claim 2, characterized in that: The web printing production line also includes a printing device, which is respectively arranged on the first unwinding device and the second unwinding device and is used to print positioning marks at different positions on the web released from the first unwinding device and the second unwinding device.

4. The web printing production line according to claim 2, characterized in that: The unwinding system further includes a third unwinding device, which is disposed between the first unwinding device and the second unwinding device and is used for releasing the isolation roll material.

5. The web printing production line according to claim 3, characterized in that: The web printing production line further includes a back coating device and a first curing device which are arranged in sequence, and the back coating device and the first curing device are arranged between the first unwinding device and the printing device.

6. The web printing production line according to claim 3, characterized in that: The web printing production line also includes a window opening device and a gluing device which are arranged in sequence. The window opening device and the gluing device are arranged between the printing device corresponding to the second unwinding device and the first unwinding device.

7. The web printing production line according to claim 4, characterized in that: The web printing production line also includes a compound device, a second curing device and a cooling device which are arranged in sequence. The compound device, the second curing device and the cooling device are arranged between the third unwinding device and the winding system.

8. The web printing production line according to claim 4, characterized in that: The winding system includes a first winding device and a second winding device. The first winding device is used to wind up the superimposed roll of rolls released by the first unwinding device, the second unwinding device and the third unwinding device. The second winding device is arranged corresponding to the first unwinding device and is used to wind up the isolation roll released by the first unwinding device.

9. A production method of a web printing production line, the production method of the web printing production line is implemented by using the web printing production line according to any one of claims 1 to 8, characterized in that: The production method of the web printing production line comprises the following steps: S1. A monitoring device monitors a first positioning mark on a coil released by a first unwinding device of an unwinding system. When the position of the first positioning mark and the winding system is less than a preset value, the monitoring device controls the traction device to adjust the position of the first unwinding device in a direction away from the winding system. When the position of the first positioning mark and the winding system is greater than a preset value, the monitoring device controls the traction device to adjust the position of the first unwinding device in a direction close to the winding system. S2, the monitoring device monitors the second positioning mark on the coil released by the second unwinding device of the unwinding system, and when the position of the second positioning mark and the first positioning mark is greater than a preset value, the monitoring device controls the traction device to adjust the position of the second unwinding device in a direction close to the first positioning mark, and the monitoring device also controls the traction device to make the second positioning mark coincide with the first positioning mark; when the position of the second positioning mark and the first positioning mark is less than a preset value, the monitoring device controls the traction device to adjust the position of the second unwinding device in a direction away from the first positioning mark, and the monitoring device also controls the traction device to make the second positioning mark coincide with the first positioning mark; S3, releasing the isolation coil of the third unwinding device of the unwinding system between the coils released by the first unwinding device and the second unwinding device, combining them into a whole and winding them through the winding system.

10. The production method of the web printing production line according to claim 9, characterized in that: When the number of stacked layers of the coil material is greater than three, the following steps are further included after step S3: S4, installing the coil after the first winding on the first unwinding device, installing the roll material to be stacked again on the second unwinding device, and winding the isolation roll material released by the first unwinding device through the second winding device of the winding system, identifying the positioning mark on the coil after the first winding by the monitoring device, and when the position of the positioning mark on the coil after the first winding and the first winding device of the winding system is less than a preset value, turning on the traction device and adjusting the position of the first unwinding device in a direction away from the first winding device; when the positioning mark on the coil after the first winding and the position of the first winding device are greater than a preset value, turning on the traction device and adjusting the position of the first unwinding device in a direction close to the first winding device, after the position of the first unwinding device is adjusted, repeating the processes of steps S2 and S3 in sequence.

Images