Rapid line making method for paper box creasing

By using the software-designed nozzle movement path and UV curing point light source in the carton indentation technology, the problem of the indentation lines prone to match heads and thorns in the prior art is solved, and higher imprint quality and line uniformity are achieved.

WO2025107548A1PCT designated stage expired Publication Date: 2025-05-30HANGZHOU IECHO AUTOMATION TECHNOLOGY CO LTD
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Patent Information

Application Number
PCT/CN2024/093841
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-11-23
Filing Date
2024-05-17
Publication Date
2025-05-30

AI Technical Summary

Technical Problem

In the prior art, when manufacturing the indentation lines of the carton, match heads and thorns are prone to occur, resulting in uneven creases of the carton, and the accuracy and uniformity of the indentation lines are difficult to control.

Method used

The movement path of the nozzle is designed in advance by software, and the movement of the nozzle is carried out through the downward, upward and side movement of the nozzle, combined with the movement of the UV curing point light source, uniform extrusion and curing of the viscous indentation material is achieved, thereby avoiding the generation of match heads and thorns.

Benefits of technology

Improve the uniformity and accuracy of the indentation lines, avoid the appearance of match heads and thorns, and significantly improve the quality of the indentation.

✦ Generated by Eureka AI based on patent content.

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Abstract

A rapid line making method for paper box creasing, relating to the technical field of paper box packaging, comprising: S1: on the basis of an instruction pre-designed by software, a nozzle reaching a specified position, that is, a starting end where a viscous creasing material is sprayed; S2: the nozzle moving downwards to a position in contact with a placement surface, and at the same time extruding the viscous creasing material from a nozzle hole; S3: the nozzle immediately moving upwards to a height L away from the placement surface, and the nozzle moving in the P direction of a graphical trajectory on the placement surface; S4: after completing the movement instruction, the nozzle stopping the action, and the nozzle stopping extruding the viscous creasing material; S5: the nozzle moving downwards to the position in contact with the placement surface, and moving outwards a certain distance, and then lifting the nozzle on the basis of an instruction; and S6: a UV curing point light source moving along a path where the viscous creasing material is sprayed, and using the light source to cure the viscous creasing material. According to the method, the generation of match heads at the starting end and spurs at an ending end is avoided, the uniformity of creasing lines is greatly improved, and imprinting quality is improved.
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Description

A fast line making method for carton creasing

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on November 23, 2023, with application number 202311579808.5 and invention name “A rapid wire making method for paper box indentation”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of paper box packaging, and in particular to a rapid line making method for paper box indentation. Background Art

[0003] When producing cartons or boxes for packaging, indentations are required to ensure that the bending area of ​​the cardboard is neat and easy to bend during subsequent packaging. Traditional indentation molds are made of iron sheets, sponge, and rubber, inlaid on a special wood (plywood or bakelite). This results in a long production cycle and high costs.

[0004] For example, the invention patent with application number CN202010936975.0 discloses that by adding a thickener amorphous silica, the viscosity of the indentation material is increased (W substance), and by extruding the W substance, it is bonded to the cardboard in the shape of the nozzle to obtain a better line cross-sectional shape and a continuous cross-sectional line. After curing, it can replace traditional indentation.

[0005] However, considering the current state of the die-cutting and creasing industry, the current method for producing non-metallic indentation lines primarily relies on a screw to transmit power to output the indentation material. Using existing technology to produce indentation lines with varying regularities requires nozzles of various shapes, which is cumbersome to use. Furthermore, precision is difficult to control. For example, referring to Figure 1 of the specification, the starting and ending points of the indentation lines are prone to stacking (shaped like match heads 01), and the end points of the lines are prone to forming thorns 02 (caused by the stickiness of the indentation material and stringing), resulting in uneven folds on the paper box.

[0006] Therefore, in response to the above technical problems, how to improve the quality of the indentation lines is a technical problem that those skilled in the art need to solve.

[0007] Summary of the Invention

[0008] The purpose of this application is to provide a rapid line making method for paper box indentation, which avoids the generation of match heads and puncture points, greatly improves the uniformity of the indentation lines, and improves the embossing quality.

[0009] To achieve the above objectives, the present application provides a rapid line making method for carton indentation, comprising:

[0010] S1: The nozzle reaches the designated position according to the pre-designed instructions of the software, which is the starting point of spraying the viscous indentation material;

[0011] S2: the nozzle moves downward to a position where it contacts the placement surface, and the viscous indentation material is extruded from the nozzle hole;

[0012] S3: the nozzle immediately moves upward to a height L from the placement surface, and the nozzle moves along the graphic track P on the placement surface;

[0013] S4: After the nozzle completes the movement instruction, the nozzle stops moving and stops extruding the viscous indentation material;

[0014] S5: The nozzle moves downward to a position where it contacts the placement surface, moves outward for a certain distance, and then raises the nozzle according to the instruction;

[0015] S6: The UV curing point light source moves along the path of spraying the viscous indentation material, and uses the light source to cure the viscous indentation material.

[0016] Preferably, the nozzle in S3 moves once in the P direction, thus completing the movement instruction. At this time, L=1.5d, where d is the nozzle aperture.

[0017] Preferably, after the nozzle in S3 moves once in the direction P, the nozzle immediately rises to a height H again, and returns along the original path and exceeds the length M of the starting end, thereby completing the movement instruction. At this time, L=d, H=1.5d, M=1.5d, and d is the nozzle aperture.

[0018] Preferably, a substrate to be coated is placed on the placement surface, and the contact position in S2 and S5 means that when the nozzle is working, there is a distance h from the surface of the substrate to be coated, and h is 0-0.5d, and d is the nozzle aperture.

[0019] Preferably, the P direction includes the X direction and the Y direction, and the nozzle is driven by a moving module and a head assembly, the moving module is located on one side of the placement surface and is movable relative to the placement surface in the Y direction; the head assembly is slidably arranged on the moving module, and the nozzle is arranged on the head assembly;

[0020] The moving module is used to drive the nozzle to move along the Y direction of the placement surface; the head assembly is used to drive the nozzle to move along the X direction of the placement surface.

[0021] Preferably, the head assembly includes a sliding plate slidably arranged with the movable module and a lifting plate slidably arranged on the sliding plate and moving toward or away from the placement surface, and the nozzle is provided on a side of the lifting plate facing the placement surface;

[0022] The lifting plate is used to drive the nozzle to rise or fall so that the nozzle reaches a specified height.

[0023] Preferably, the nozzle is connected to the rubber cylinder through a delivery channel, the other end of the rubber cylinder is connected to an external compressed air source, and the lifting plate is further provided with a cylinder, the valve core pull rod of the cylinder extends into the delivery channel;

[0024] The valve core pull rod is used to control the on-off of the delivery channel to control whether the viscous indentation material is extruded from the nozzle.

[0025] Preferably, a motor is fixedly provided on the sliding plate, a screw rod is connected to the power end of the motor, the screw rod cooperates with the slider, and the slider is fixedly connected to the lifting plate;

[0026] The motor drives the lifting plate to move so as to control the lifting movement of the nozzle.

[0027] Preferably, the UV curing point light source is rotatably arranged on the head assembly so that the light beam emitted by the UV curing point light source can always correspond to the viscous indentation material extruded by the nozzle.

[0028] Preferably, the placement surface is a placement plane or a rotating roller;

[0029] When the placement surface is a placement plane, both ends of the movable module are slidably arranged relative to the placement surface in the Y direction via linear modules;

[0030] When the placement surface is a rotating roller, the rotating roller rotates to cause the movable module to move in the Y direction relative to the placement surface.

[0031] Compared with the above background technology, the nozzle of the present application reaches the starting end of spraying the viscous indentation material according to the software instruction, and at this position the nozzle moves down to the contact position with the placement surface, and at the same time the viscous indentation material is uniformly extruded from the nozzle; at this time, the nozzle immediately moves up a distance, and during the upward movement of the nozzle, the viscous indentation material has been in contact with the substrate, which is equivalent to stretching the viscous indentation material upward from the upper surface of the substrate for a distance, thereby reducing the stacking of the viscous indentation material here and avoiding the appearance of match heads. After the nozzle completes the movement instruction, it stops moving and stops extruding the viscous indentation material. At this time, the nozzle moves down to the contact position with the placement surface and moves outward for a distance, and then raises the nozzle according to the instruction. This action is equivalent to wiping the residual viscous indentation material on the nozzle on the placement surface, and at the same time can cut off the wire drawing formed at the end of the indentation line; finally, the UV curing point light source moves along the spraying path of the viscous indentation material to solidify the sprayed viscous indentation material to keep its shape stable.

[0032] When an indentation line is completed, due to the stickiness of the indentation material, it will not break immediately, but will form a thin thread, called stringing. Stringing can reduce the quality of the indentation line and form puncture points. This method, by stretching and sitting the nozzle and wiping after spraying, overcomes the problem of the starting end of the indentation line being prone to stacking (shaped like a match head) and the end of the line being prone to puncture points (caused by stringing due to the sticky indentation material), thereby improving the quality of the indentation line. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0034] FIG1 is a schematic diagram of the shape of an indentation line in the prior art;

[0035] FIG2 is a schematic diagram of a movement path of a nozzle provided in an embodiment of the present application;

[0036] FIG3 is a schematic diagram of another movement path of the nozzle provided in an embodiment of the present application;

[0037] FIG4 is a schematic structural diagram of a wire making device provided in an embodiment of the present application;

[0038] FIG5 is a schematic diagram of the structure of the head assembly provided in an embodiment of the present application.

[0039] In the figure: 01, match head 02, thorn head 1, placement surface 2, mobile module 3, drag chain 4, head assembly 5, sliding plate 6, motor 7, slider 8, screw 9, lifting plate 10, cylinder 11, valve core pull rod 12, conveying channel 13, nozzle 14, rubber cylinder 15, UV curing point light source. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0041] It should be noted that in this embodiment, the directions or positional relationships indicated by "upper," "lower," "front," and "back" are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on this application. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0043] As shown in FIG2 , in this embodiment, a rapid line making method for a carton indentation is provided, the method comprising:

[0044] S1: The nozzle reaches the designated position according to the pre-designed instructions of the software, which is the starting point of spraying the viscous indentation material;

[0045] S2: The nozzle moves down to the position where it contacts the placement surface, and the viscous indentation material is squeezed out of the nozzle;

[0046] S3: The nozzle immediately moves upward to a height L from the placement surface, and moves along the graphic trajectory P on the placement surface. The P direction here includes the X direction and the Y direction. For details, please refer to Figure 4. The nozzle moves along the X direction on the placement surface, or the nozzle moves along the Y direction of the placement surface;

[0047] S4: After the nozzle completes the movement instruction, it stops moving and stops extruding the viscous indentation material;

[0048] S5: The nozzle moves down to the position where it contacts the placement surface, moves outward for a certain distance, and then raises the nozzle according to the command;

[0049] S6: The UV curing point light source moves along the path of spraying the viscous indentation material, and uses the light source to cure the viscous indentation material.

[0050] It should be noted that this method requires the use of a wire-making device, which includes a mobile module 2, a head assembly 4, and a UV curing point light source 15. The mobile module 2 is located on one side of the placement surface 1 and is arranged to move in the Y direction relative to the placement surface 1. The placement surface 1 is used to place the substrate to be coated.

[0051] The head assembly 4 is slidably set on the movable module 2 and is moved along the X direction of the placement surface 1; it should be noted that, referring to Figure 4, the X direction and Y direction of the placement surface 1 are perpendicular to each other, and the movement of both the movable module 2 and the head assembly 4 can meet the effect of spraying in any direction on the placement surface 1.

[0052] The head assembly 4 includes a sliding plate 5 that slides with the movable module 2 and a lifting plate 9 that slides on the sliding plate 5. The lifting plate 9 can move toward or away from the placement surface 1 to adjust the distance between the nozzle 13 and the placement surface 1 or the substrate. A nozzle 13 is provided on the side of the lifting plate 9 facing the placement surface 1. The nozzle 13 is connected to a rubber cylinder 14 via a delivery channel 12. The other end of the rubber cylinder 14 is connected to an external compressed air source. This utilizes pneumatic transmission to extrude the viscous indentation material, overcoming the disadvantage of uneven viscous indentation material extrusion caused by mechanical transmission.

[0053] In addition, a cylinder 10 is provided on the lifting plate 9, and a valve core pull rod 11 of the cylinder 10 extends into the conveying channel 12. The cylinder 10 is controlled to move by the solenoid valve, so that the valve core pull rod 11 controls the on and off of the conveying channel 12.

[0054] The UV curing point light source 15 is provided on the head assembly 4 and moves with the sliding plate 5 , and can irradiate the viscous indentation material extruded by the nozzle 13 , thereby curing it and maintaining a stable shape.

[0055] In summary of the above embodiments, the line making device utilizes the movable module 2 and the head assembly 4 to realize the X-direction and Y-direction spraying of the placement surface 1, that is, the movable module 2 can move in the Y direction relative to the placement surface 1, and the head assembly 4 can move in the X direction relative to the placement surface 1, and when the movable module 2 and the head assembly 4 both move at the same time, the effect of spraying in any direction on the placement surface 1 can be satisfied, thereby providing a combination of various indentation lines. In addition, the present application uses pneumatic transmission extrusion instead of traditional mechanical transmission. The viscosity of air is very small, so the flow loss is small, the efficiency is high, the power output is more stable, the extrusion amount of viscous indentation material is uniform, and the medium is clean, the pipeline is not easy to be blocked, and maintenance is simpler. A solenoid valve is also provided. When the power is on, the valve core pull rod 11 moves upward to open the conveying channel 12; when the power is off, the valve core pull rod 11 moves downward to close the conveying channel 12. From the beginning to the end of printing the indentation line, the length error of the line can be accurately controlled within 0.5mm. After spraying of an indentation line is completed, the indentation line is cured by using a UV curing point light source 15 to keep its shape permanently stable.

[0056] The placement surface 1 can be a placement plane or a rotating roller, and the substrate to be coated with glue can be laid on the placement plane or sleeved on the rotating roller according to the condition of the placement surface 1.

[0057] When the placement surface 1 is a placement plane, both ends of the movable module 2 can be set to slide in the Y direction relative to the placement surface 1 through the linear module, and maintain the smoothness of the movement to ensure the quality of the spray indentation line.

[0058] When the placement surface 1 is a rotating roller, as the rotating roller rotates, the movable module 2 can naturally move in the Y direction relative to the placement surface 1, which will not be described in detail here.

[0059] The sliding plate 5 can also be slidably set on the moving module 2 through a linear module. Please refer to Figure 5. The linear module is set at the contact point between the sliding plate 5 and the moving module 2 to keep the sliding plate 5 moving along the X direction of the placement surface 1.

[0060] As shown in Figure 5 , a motor 6 is fixedly mounted on the sliding plate 5. The power end of the motor 6 is connected to a screw 8, which rotates with the power end of the motor 6. The screw 8 cooperates with a slider 7, which is fixed to the lifting plate 9. The screw-slider connection structure drives the lifting plate 9 to move. It should be noted that there are many ways to control the movement of the lifting plate 9, including but not limited to the method described in this embodiment, as well as the use of a linear module. These methods will not be described in detail here, as they all fall within the scope of protection of this application.

[0061] On the basis of the above embodiment, in order to improve the smoothness of the movement of the slider 7, the slider 7 can be set to slide along the wall of the sliding plate 5, and a limiting member can be set on the sliding plate 5, so that the limiting slider 7 only moves toward or away from the placement surface 1.

[0062] The rubber cylinder 14 is filled with a viscous indentation material, which is pushed along the conveying channel 12 by the air pressure of the compressed air source, and is extruded in the nozzle 13 to form an indentation line. The compressed air pressure is 0.5±0.02Mpa, and the viscous indentation material is maintained within the range of 25±0.5°C. The viscosity of the viscous indentation material is 45000-46000Mpa·s. It should be noted that the above parameters are specific implementation parameters and can also be adjusted according to actual conditions. There are no excessive restrictions here. A drag chain 3 is also provided between the head assembly 4 and the mobile module 2 for placing the cables of the motor 6 and the cylinder 10.

[0063] In addition, the UV curing point light source 15 can be rotatably set on the head assembly 4, and the irradiation angle of the UV curing point light source 15 can be appropriately adjusted to ensure that the light beam emitted by the UV curing point light source 15 can always correspond to the viscous indentation material extruded by the nozzle 13, thereby improving the curing effect.

[0064] Based on the above embodiment, this method can achieve an indentation line with a stable cross-sectional shape by only one application of glue. Referring to Figure 2, when the head assembly 4 starts to execute the "instructions" of the software, the nozzle 13 first moves down to the position just touching the placement surface 1, that is, point O in Figure 2; at the same time, the solenoid valve is opened, the cylinder 10 is actuated, the valve core pull rod 11 rises, the conveying channel 12 is opened, and the viscous indentation material is affected by the air pressure (this air pressure is a pre-set value), and will flow out of the nozzle 13 at a uniform speed.

[0065] The nozzle 13 then moves upward to a height L (L = 1.5d), where d is the nozzle 13 aperture, from the placement surface 1 (segment OA in Figure 2). Then, driven by the sliding plate 5 or the moving module 2, the nozzle 13 moves at a constant speed in the X or Y direction. The distance the head assembly 4 moves corresponds to the length of the indentation line (segment AB in Figure 2). When an indentation line is completed, the solenoid valve closes, the cylinder 10 returns, and the sliding plate 5, according to a pre-programmed procedure, lowers the nozzle 13 again to a point just touching the placement surface 1 (segment BC in Figure 2). The nozzle 13 then moves to a point approximately 2 mm to the side of the tabletop (segment CD in Figure 2). This effectively wipes any remaining sticky indentation material from the nozzle 13 onto the placement surface 1, simultaneously cutting off any strands of material formed at the end of the indentation line. The head then moves upward, as shown in segment DE in Figure 2, completing the indentation of the line. Finally, the head assembly 4 drives the UV curing point light source 15 to cure the entire indentation line, so that the written indentation line is pre-cured to maintain its shape stability.

[0066] This method can also change the gluing process according to actual conditions, that is, adopt two stacking gluing. After the sliding plate 5 slides only once in the X direction on the moving module 2, or after the moving module 2 moves only once in the Y direction, the nozzle 13 immediately rises again to a height H, and returns along the original path and exceeds the starting end M length, thus completing the movement instruction. Please refer to Figure 3. When the head assembly 4 starts to execute the "instructions" of the software, the nozzle 13 first moves down to the position A1. The distance between A1 and the placement surface 1 is L=d, and d is the aperture of the nozzle 13. At the same time, the solenoid valve is opened, the cylinder 10 actuates the valve core pull rod 11 to rise, and the conveying channel 12 is opened. The viscous indentation material is affected by the air pressure (this air pressure is a pre-set value) and will flow out of the nozzle 13 at a uniform speed.

[0067] Under the action of the sliding plate 5 or the moving module 2, the nozzle 13 moves at a constant speed along the X or Y direction. When it moves to the B1 position, the nozzle 13 immediately rises to a height of H, H = 1.5d, and at this height, returns to the A2 position at the same speed, and the position of A2 exceeds the length of the A1 position M, M = 1.5d. At this point, the double-layer stacking glue is completed. After completing the moving instruction, the nozzle 13 is moved down again to the position just touching the placement surface 1, that is, the A2C1 section in Figure 3. And it moves to a point about 2mm next to it on the table, that is, the C1D1 section in Figure 3, and then the head moves up, that is, the D1E1 section in Figure 3, to complete the writing of the line. Finally, the head assembly 4 drives the UV curing point light source 15 to cure the entire indentation line.

[0068] It should be noted that within 10 seconds of starting to print the indentation line (for longer lines, we will stop printing around 8 seconds to pre-cure the line before continuing to print the unfinished line, with a printing speed of 0.15m / s), we use a specific wavelength UV curing point light source 15 for real-time pre-curing, which can effectively maintain the cross-sectional shape of the line. The point light source power is selected as 5W, the distance between the point light source and the indentation line is controlled at 35-40mm, and the point light source movement speed is 50mm / s. Finally, the entire indentation mold is cured with a surface light source to maintain the permanent stability of the line shape.

[0069] The contact position in S2 and S5 and the above-mentioned contact position means that the nozzle 13 is at a distance h from the surface of the substrate to be coated when working, and h is 0-0.5d, and d is the aperture of the nozzle 13.

[0070] When spraying viscous indentation material in the Y direction, for the placement plane, it is only necessary to move the module horizontally to cooperate with the placement plane to move a certain distance, and the viscous indentation material is evenly extruded along the Y direction by the nozzle 13; for the roller, it is only necessary to rotate the roller at a certain angle, and the nozzle 13 is evenly extruded in the Y direction relative to the placement surface 1 as the roller rotates.

[0071] If the X-direction writing is continued, the moving module 2 stops moving according to the program instruction, and the head assembly 4 moves along the guide rail on the moving module 2, that is, moves along the X-direction.

[0072] In order to improve the adhesion between the indentation line and the substrate and increase the service life, this design selects a relatively low-viscosity ultraviolet light-sensitive curing agent, and extrude the viscous indentation material through the nozzle 13. Since the viscous indentation material has the characteristics that the lower the viscosity, the faster the surface activity and migration speed, the viscous indentation material extruded from the nozzle 13 is bonded to the substrate into a nearly circular columnar strip, which will flow over time and gradually become flat. The curing of this application occurs before the indentation line becomes flat, that is, in order to obtain the ideal cross-sectional shape of the indentation line without reducing the adhesion between the indentation line and the substrate, a UV curing point light source 15 is installed. After the indentation line is made, pre-curing is immediately performed to maintain the cross-section of the indentation line. In this way, it is possible to avoid using an amorphous silica thickener to maintain the shape of the indentation line, overcoming the problems of reduced adhesion between the indentation line and the substrate and short extrusion life.

[0073] In summary of the above embodiments, the method is implemented using the above-mentioned wire making device, that is, the head assembly 4 reaches the starting end of spraying the viscous indentation material according to the software instruction, the lifting plate 9 drives the nozzle 13 to move down to the contact position with the placement surface 1 according to the instruction, and at the same time the cylinder 10 is actuated to drive the valve core pull rod 11 to rise, the conveying channel 12 is connected, and the viscous indentation material is uniformly extruded from the nozzle 13; at this time, the lifting plate 9 immediately moves up a distance, and during the upward movement of the nozzle, the viscous indentation material has already contacted the substrate, which is equivalent to stretching the viscous indentation material upward from the upper surface of the substrate for a distance, thereby reducing the stacking of the viscous indentation material here and avoiding the appearance of match heads. The sliding plate 5 slides along the X direction on the moving module 2, or the moving module 2 moves along the Y direction of the placement surface 1, thereby completing the X-direction or Y-direction spraying. When the spraying is completed, the valve core pull rod 11 moves down to close the conveying channel 12, and the lifting plate 9 drives the nozzle 13 down to the contact position of the placement surface 1 again, and the sliding plate 5 or the moving module 2 drives the lifting plate 9 to a certain distance to the outside, and then the lifting plate 9 is raised. This action is equivalent to wiping the residual sticky indentation material on the nozzle 13 on the placement surface 1, and at the same time can cut off the wire drawing formed at the end of the indentation line; finally, the UV curing point light source 15 moves along the spraying path of the sticky indentation material, so that the photosensitive material on the surface of the indentation line is pre-cured, so that the indentation line maintains a stable shape.

[0074] When an indentation line is drawn, the viscosity of the viscous indentation material prevents it from breaking immediately, and a thin thread will form, called stringing. Stringing can reduce the quality of the indentation line and form puncture points. This method, through precise control of the air pressure transmission and wiping action after spraying, overcomes the problems of the starting end of the indentation line (shaped like a match head) and the end of the line (caused by stringing due to the viscosity of the viscous indentation material), thereby improving the quality of the indentation line.

[0075] In general, this application utilizes pneumatic transmission to overcome the disadvantage of uneven extrusion of viscous indentation materials caused by mechanical transmission; the addition of a UV curing point light source 15 and the use of a high-power ultraviolet lamp for curing eliminate the need for an amorphous silica thickener to increase the viscosity of the viscous indentation material, thereby improving the shape retention of the indentation line and overcoming the problems of reduced adhesion between the line and the substrate and short extrusion life; and optimizing the spraying process path to overcome the problem of easy stacking at the starting and ending points of the indentation line and easy thorns at the end of the line, thereby improving the quality of the indentation line. After completing the combined indentation line spraying in multiple steps, it can be used to produce indentation lines for boxes such as coated paper and corrugated paper.

[0076] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0077] This document uses specific examples to illustrate the principles and implementation methods of this application. The description of the above examples is only intended to help understand the method and core ideas of this application. It should be noted that for those skilled in the art, without departing from the principles of this application, various improvements and modifications can be made to this application, and such improvements and modifications also fall within the scope of protection of the claims of this application.

Claims

1. A fast wire making method for carton creasing, characterized in that: include: S1: The nozzle reaches the designated position according to the pre-designed instructions of the software, i.e., the starting end of spraying the viscous indentation material; S2: the nozzle moves downward to a position where it contacts the placement surface, and the viscous indentation material is extruded from the nozzle hole; S3: the nozzle immediately moves upward to a height L from the placement surface, and the nozzle moves along the graphic track P on the placement surface; S4: After the nozzle completes the movement instruction, the nozzle stops moving and stops extruding the viscous indentation material; S5: the nozzle moves down to a position where it contacts the placement surface, moves outward for a certain distance, and then raises the nozzle according to the instruction; S6: The UV curing point light source moves along the path of spraying the viscous indentation material, and the viscous indentation material is cured by the light source.

2. The rapid wire making method for carton creasing according to claim 1, characterized in that: In S3, the nozzle moves once in the P direction, and the movement instruction is completed. At this time, L=1.5d, where d is the nozzle aperture.

3. The rapid wire making method for carton creasing according to claim 1, characterized in that: After the nozzle in S3 moves once in the direction P, the nozzle immediately rises to a height of H again, returns along the original path and exceeds the starting end by a length of M, thus completing the movement instruction. At this time, L=d, H=1.5d, M=1.5d, and d is the nozzle aperture.

4. The rapid wire making method for carton creasing according to any one of claims 1 to 3, characterized in that: A substrate to be coated with glue is placed on the placement surface, and the contact position in S2 and S5 means that when the nozzle is working, there is a distance h from the surface of the substrate to be coated with glue, and h is 0-0.5d, and d is the nozzle aperture.

5. The rapid wire making method for carton creasing according to claim 1, characterized in that: The P direction includes the X direction and the Y direction. The nozzle is driven by a moving module and a head assembly. The moving module is located on one side of the placement surface and is arranged to move relative to the placement surface in the Y direction. The head assembly is slidably arranged on the moving module, and the nozzle is arranged on the head assembly. The moving module is used to drive the nozzle to move along the Y direction of the placement surface; the head assembly is used to drive the nozzle to move along the X direction of the placement surface.

6. The rapid wire making method for carton creasing according to claim 5, characterized in that: The head assembly includes a sliding plate slidably arranged with the moving module and a lifting plate slidably arranged on the sliding plate and moving toward or away from the placement surface, and the nozzle is arranged on a side of the lifting plate facing the placement surface; The lifting plate is used to drive the nozzle to rise or fall so that the nozzle reaches a specified height.

7. The rapid wire making method for carton creasing according to claim 6, characterized in that: The nozzle is connected to the rubber cylinder through a delivery channel, the other end of the rubber cylinder is connected to an external compressed air source, and the lifting plate is also provided with a cylinder, and the valve core pull rod of the cylinder extends into the delivery channel; The valve core pull rod is used to control the on-off of the delivery channel to control whether the viscous indentation material is extruded from the nozzle.

8. The rapid wire making method for carton creasing according to claim 7, characterized in that: A motor is fixedly arranged on the sliding plate, a screw rod is connected to the power end of the motor, the screw rod cooperates with the slider, and the slider is fixedly connected to the lifting plate; The motor drives the lifting plate to move so as to control the lifting movement of the nozzle.

9. The rapid wire making method for carton creasing according to claim 8, characterized in that: The UV curing point light source is rotatably arranged on the head assembly so that the light beam emitted by the UV curing point light source can always correspond to the viscous indentation material extruded by the nozzle.

10. The rapid wire making method for carton creasing according to any one of claims 5 to 9, characterized in that: The placement surface is a placement plane or a rotating roller; When the placement surface is a placement plane, the two ends of the moving module are slidably arranged relative to the placement surface in the Y direction through a linear module; When the placement surface is a rotating roller, the rotating roller rotates to make the moving module move in the Y direction relative to the placement surface.

Citation Information

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