CN114834191A

CN114834191A - Method for positioning and one-time hot stamping of multi-point non-equidistant patterns

Info

Publication number: CN114834191A
Application number: CN202210262819.XA
Authority: CN
Inventors: 董雯光; 李�瑞; 李坤东; 鲁维维; 杨春
Original assignee: Yuxi Globe Colour Printing Paper Box Co ltd
Current assignee: Yuxi Globe Colour Printing Paper Box Co ltd
Priority date: 2022-03-17
Filing date: 2022-03-17
Publication date: 2022-08-02
Anticipated expiration: 2042-03-17
Also published as: CN114834191B

Abstract

The invention provides a method for positioning and one-time hot stamping of multi-point non-equidistant patterns, relates to the technical field of hot stamping, and mainly aims at a special working scene of non-equidistant pattern hot stamping in the multi-splicing hot stamping process to specially improve the arrangement mode, the interval and the registration cursor of anti-counterfeiting marks on an alumite so as to realize the hot stamping of the multi-point non-equidistant patterns after one-time positioning. According to the requirements of multi-splicing gold stamping and the distribution rule of gold stamping parts on printing paper, the anti-counterfeiting marks on the electrochemical aluminum film are rearranged, the arrangement of the anti-counterfeiting marks on the original electrochemical aluminum film is optimized and improved, the redesign and production of the electrochemical aluminum film are completed, the change on the original design and production process is small, the positioning and one-time hot stamping of multi-splicing, multi-point and non-equidistant patterns is realized on the basis of minimum waste of the electrochemical aluminum film, the positioning is accurate, the production continuity is good, and the production efficiency is high.

Description

Method for positioning and one-time hot stamping of multi-point non-equidistant patterns

Technical Field

The invention relates to the technical field of gold stamping, in particular to a method for positioning and one-time hot stamping of multi-point non-equidistant patterns.

Background

The gold stamping is widely applied in the packaging production industry, and the application proportion of the gold stamping process is higher in the field of preparation of special printed matters, particularly in the cigarette production industry. In order to improve the gold stamping efficiency, when a printing enterprise carries out gold stamping on a specific position on a cigarette package, a multi-splicing and simultaneous-carrying mode is often adopted, namely, the operation of carrying out hot stamping on the same pictures and texts on a plurality of packages at one time is realized, the multi-splicing and hot stamping is commonly called as 'multi-splicing and hot stamping', the gold stamping efficiency can be greatly improved under the condition that the sizes and the intervals of the pictures and the texts to be hot stamped are completely consistent, and the gold stamping quality is stable; in addition, in the prior art, when multi-splicing hot stamping is carried out, registration of anti-counterfeiting images and texts on alumite and printing images and texts on printing paper is required, a cursor detection method is generally adopted in the registration method, the basic principle is that a system utilizes a scanning probe to carry out digital photography on overprint marks which are arranged beside printing contents and have certain shapes, and the system can accurately calculate the actual position of each overprint mark according to pictures. If the actual position deviates from the reference register mark within the system, a correction signal is generated to adjust the plate cylinder of the printing press axially and radially to match the reference value, thereby achieving automatic registration. The adopted cursor is usually a wedge-shaped cursor, the mark can be used for longitudinal registration and also can be used for transverse registration, the principle of the longitudinal registration of the mark is similar to that of a linear cursor, when the transverse registration is carried out, the scanning head aligns to the central line of the wedge-shaped mark, when a transverse error occurs, the scanning head is aligned to the central line, a signal is fed back to the motor, and the printing roller is transversely moved to register the mark.

However, when multi-splicing and registration gold stamping is performed on cigarette carton packages, if the front and the back of each carton needs to be hot stamped with the same mark, and N-splicing gold stamping is performed, the number of anti-counterfeiting electrochemical aluminum marks needs to be 2N, if the distance between every two marks on the same or adjacent cartons is consistent, and the distance between the anti-counterfeiting marks on the electrochemical aluminum is set to be a fixed value, continuous hot stamping can be realized by sequentially stepping; but the actual situation in a particular production is: the interval between two marks on same barrel is unanimous, but owing to be provided with the cutting part between two adjacent barrels, consequently will cause the interval between 2 nd mark on the 1 st barrel and the 1 st mark on the 2 nd barrel to be greater than the interval between two marks on arbitrary barrel, that is to say, the interval between the 2N mark of carrying out the thermoprint simultaneously is inconsistent, if the interval between the anti-fake mark on the electrochemical aluminium still sets for the fixed value this moment, then can have the unable problem of registering of follow-up thermoprint.

The traditional method of 'one mark corresponds to one cursor' needs to add a process of setting the cursor, so that the production cost is increased, and the method is adopted for registration gold stamping, and each registration needs to detect a specific fixed cursor, so that the use cost is also increased; secondly, the registration methods adopt a method of detection after printing, namely, after hot stamping, a cursor on a product is detected, so that whether an error is in a range is judged, if the error is not qualified, information is fed back for adjustment, and larger hysteresis exists; in addition, if arrange the position and the interval one-to-one at the position of waiting to scald the position on the paper completely according to the undertaking with anti-fake label on the electrochemical aluminium membrane, really can make things convenient for the registration when carrying out the thermoprint, single thermoprint also only needs to advance setting and the recognition of location cursor in proper order, but greatly increased the degree of difficulty of electrochemical aluminium membrane production, and because the interval between the anti-fake label is too big, still cause the very big waste of electrochemical aluminium material, and, the distance greatly increased that electrochemical aluminium membrane need remove in thermoprint in-process unit interval, also be a great test to the stability of technology and the operating life of equipment.

Disclosure of Invention

Aiming at the special working scene of non-equidistant pattern gold stamping in the multi-splicing hot stamping process, the invention specially improves the arrangement mode, the interval and the registration cursor of the anti-counterfeiting mark on the alumite, so that the hot stamping of the multi-point non-equidistant pattern can be simultaneously finished after the one-time positioning.

In order to achieve the purpose, the invention adopts the following technical scheme: a method for positioning and one-time hot stamping of multi-point non-equidistant patterns is suitable for a synchronous hot stamping process of a plurality of non-equidistant patterns, and is characterized by comprising the following steps:

firstly, determining the number of pieces of single gilt and the positions and the intervals of icons to be gilt on printing paper:

1. detecting the longitudinal length of a single piece of printing paper to determine the longitudinal typesetting number of single hot stamping of a flat-pressing gilding press, namely taking the quotient obtained by dividing the longitudinal length of the gilding plate of the flat-pressing gilding press and the longitudinal length of the single piece of printing paper as the longitudinal typesetting number of the single hot stamping, and obtaining the number of the single piece of printing paper which can be accommodated by the single hot stamping according to the longitudinal typesetting number, namely the number of so-called 'multi-piecing gilding';

2. detecting the longitudinal distance between hot stamping marks on a single piece of printing paper, taking the geometric center line of each hot stamping mark as a detection end point of the distance, wherein each printing paper is provided with two or more hot stamping marks, the distance between the hot stamping marks on the same piece of printing paper is marked as L1, the distance between the last hot stamping mark of a first piece and the first hot stamping mark of a second piece of adjacent printing paper is marked as L2, the L2 has a cutting part of the adjacent printing paper, so that L2 is more than L1 and has constant numerical value, and the numerical value of L2 which is more than L1 is the same as the width of the cutting part arranged between the two pieces of printing paper;

3. setting an electrochemical aluminum film:

firstly, recording a first hot stamping mark on a first piece of printing paper as AT1, recording a second hot stamping mark as AT2, and repeating the steps, wherein the Nth hot stamping mark is ATN; then, continuously setting a first hot stamping mark BT1, a second hot stamping mark BT2, and the like on a third piece of printing paper, and setting an Nth hot stamping mark BTN, wherein a first hot stamping mark BT N +1, a second hot stamping mark BTN +2, and the like on a fourth piece of printing paper;

specific positions are set as follows: firstly, determining a first positioning cursor to be followed by first hot stamping on an alumite, setting anti-counterfeiting hot stamping marks AT1 AT positions corresponding to the first positioning cursor, and then sequentially setting anti-counterfeiting hot stamping marks AT2 to ATN AT N L1 intervals; anti-counterfeiting hot stamping marks ATN +1 are arranged at intervals L2, and anti-counterfeiting hot stamping marks ATN +2 are sequentially arranged at intervals N L1 till the intervals N + N; the hot stamping of even number of printing paper sheets can be completed by the first hot stamping according to the first positioning cursor; and then, continuously setting the anti-counterfeiting hot stamping cursor for the second time till the Nth hot stamping according to the rule of setting the anti-counterfeiting hot stamping mark by the first hot stamping, and repeating the steps.

4. When the automatic stamping machine works, the first positioning cursor is read by first hot stamping, AT1, AT2 and 2N anti-counterfeiting marks are hot stamped on a first certificate and a second piece of printing paper according to the set fixed distance, then the electrochemical aluminum film moves forwards for a specific distance L3, the second positioning cursor is made to move to the position of the first positioning cursor, the subsequent anti-counterfeiting marks are hot stamped on a third piece of printing paper and a fourth piece of printing paper according to the fixed distance, and the hot stamping is continuously carried out by the same analogy.

Preferably, in step 3, two hot stamping marks are arranged on each piece of printing paper, and the steps are as follows:

marking a first hot stamping mark on a first piece of printing paper as AT1, a second hot stamping mark as AT2, a first hot stamping mark on a second piece of printing paper as AT3 and a second hot stamping mark as AT 4; then, continuously setting a first hot stamping mark BT1 and a second hot stamping mark BT2 on a third piece of printing paper according to the rule, and marking a first hot stamping mark BT3 and a second hot stamping mark BT4 on a fourth piece of printing paper;

specific positions are set as follows: firstly, determining a first positioning cursor to be followed by first hot stamping on an alumite, setting an anti-counterfeiting hot stamping mark AT1 AT a position corresponding to the first positioning cursor, then setting an anti-counterfeiting hot stamping mark AT2 AT an interval L1, setting an anti-counterfeiting hot stamping mark AT3 AT an interval L2, and setting an anti-counterfeiting hot stamping mark AT4 AT an interval L1; and then continuously setting anti-counterfeiting hot stamping cursors BT1, BT2, BT3 and BT4 for secondary hot stamping according to the rule that the anti-counterfeiting hot stamping marks are set by the first hot stamping, and repeating the steps.

Preferably, when the number of the printing paper sheets capable of being accommodated by single hot stamping is determined, a quotient obtained by dividing the axial width of the hot stamping plate of the flat-pressing flat-stamping press by the axial width of the single printing paper sheet is taken as the axial typesetting number of the single hot stamping in the axial direction, and then the number of the single printing paper sheets capable of being accommodated by the single hot stamping is obtained according to the parallel combination of the longitudinal typesetting number and the axial typesetting number, wherein the longitudinal typesetting number, the axial typesetting number and the final number of the multi-gilding are even numbers.

Has the advantages that:

the invention provides a method for positioning multi-point non-equidistant patterns and carrying out one-time hot stamping, which comprises the steps of arranging printing paper, setting a positioning cursor and an anti-counterfeiting mark on a corresponding electrochemical aluminum film, and walking the electrochemical aluminum film during hot stamping, and mainly aims at solving the problems that multi-splicing and registration hot stamping are carried out on cigarette carton packaging, more than one hot stamping pattern is required on a single carton, multi-splicing and hot stamping are required for improving the efficiency, but the distances among a plurality of marks which are subjected to hot stamping at the same time are inconsistent, the subsequent hot stamping cannot be registered or the process difficulty is increased, the production cost is improved, a large amount of raw materials are wasted, and the like; this application is according to piecing together gilt requirement more to and the distribution law at gilt position on the undertaking paper, rearrange the setting to the false proof mark on the electrochemical aluminium membrane, optimize the improvement to the setting of false proof mark on the former electrochemical aluminium membrane, the redesign and the production of having accomplished the electrochemical aluminium membrane, change to former design and production technology is less, realized piecing together more on the basis of the minimum waste of electrochemical aluminium membrane, the multiple spot, the location of non-equidistance pattern closes thermoprint, the location is accurate, the production continuity is good, high production efficiency.

Drawings

FIG. 1 is a schematic diagram of the distribution structure of an electrochemical aluminum film in an embodiment.

Fig. 2 is a schematic diagram of the separation of the single-sided strip case from the anti-counterfeit mark on the electrochemical aluminum film in the specific embodiment.

Fig. 3 is a schematic view of the superposition of the 4-piece strip case and the anti-counterfeit mark on the electrochemical aluminum film in the specific embodiment.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

As shown in fig. 1, 2, and 3, in this embodiment, a certain type of carton package of cigarettes sold in the market is taken as an example, a single carton of the package is rectangular and is folded into a rectangular package box, laser anti-counterfeiting marks AT1 and AT2 need to be respectively hot-stamped AT positions of labels on the front and back sides of the folded carton of the package in the production process, that is, hot stamping is performed on a plane of rectangular paper which is not folded, the anti-counterfeiting marks arranged on the corresponding conventional electrochemical aluminum film are arranged AT equal intervals, and if the distance between the two hot stamping positions on the carton is constant, a plurality of anti-counterfeiting marks can be equidistantly arranged in the corresponding constant distance on the electrochemical aluminum film, so that the anti-counterfeiting marks on the electrochemical aluminum film can be hot stamped one by one AT the hot stamping position on the carton, thereby realizing high-speed hot stamping and saving the electrochemical aluminum film to the greatest extent; however, due to the requirement of the production process, the packaging barrel is subjected to continuous gravure and gold stamping by using a roll paperboard during production, and then die cutting is performed, so that a plurality of barrels are connected together during gold stamping, a cutting part which needs to be discarded during die cutting is reserved between the printing pattern of each barrel and the printing pattern of the adjacent barrel, and thus the distance L2 between the hot stamping positions of two adjacent anti-counterfeiting marks AT1 and AT2 on the two continuous barrel patterns is larger than the distance L1 between the two hot stamping positions on the same barrel, so that the anti-counterfeiting marks on the electrochemical aluminum film cannot be arranged AT equal intervals, and a large amount of waste of the electrochemical aluminum film can be caused no matter the single hot stamping is performed according to the previous continuous hot stamping or the hot stamping positions on the barrels, and the production cost is too high when the technical transformation of the whole set of equipment is performed again, which is not applicable.

The method for positioning and hot stamping the multi-point non-equidistant pattern at one time in the embodiment adopts the following steps:

firstly, determining the size, wherein the distance L1=135.9mm between two hot stamping marks arranged on each piece of printing paper, the distance L2=159mm between the adjacent printing paper, the second hot stamping mark of the first piece and the first hot stamping mark of the second piece, and determining the number of two rows of printing paper which can contain 4 pieces of printing paper in total, namely four-splicing hot stamping, according to the size.

In the longitudinal direction, the first hot stamping mark on the first printing paper in the upper row is marked as AT1, the second hot stamping mark is marked as AT2, the first hot stamping mark on the second printing paper is marked as AT3, and the second hot stamping mark is marked as AT 4; the whole hot stamping process of the two pieces of printing paper in the lower row is completely consistent with that of the two pieces of printing paper in the upper row, so that the two pieces of printing paper are not marked independently; determining a first positioning cursor to be followed by first hot stamping on an alumite, setting an anti-counterfeiting hot stamping mark AT1 AT a position corresponding to the first positioning cursor, then setting an anti-counterfeiting hot stamping mark AT2 AT an interval L1, setting an anti-counterfeiting hot stamping mark AT3 AT an interval L2, and setting an anti-counterfeiting hot stamping mark AT4 AT an interval L1; and the first hot stamping according to the first positioning cursor can finish the hot stamping of two or all four longitudinal printing papers.

The second positioning cursor used for the second hot stamping is arranged at a position which is apart from the first positioning cursor by L3=240mm, and then the anti-counterfeiting hot stamping cursors BT1, BT2, BT3 and BT4 for the second hot stamping are continuously arranged according to the rule that the anti-counterfeiting hot stamping mark is arranged by the first hot stamping, so that the hot stamping is repeatedly and continuously carried out; except the 1 st, 3 rd and 5 th anti-counterfeiting marks which can be missed in the beginning of hot stamping, the hot stamping can be completed by the anti-counterfeiting marks at intervals in sequence, and the waste of the electrochemical aluminum film is greatly reduced.

Claims

1. A method for positioning and one-time hot stamping of multi-point non-equidistant patterns is characterized by being suitable for a synchronous hot stamping process of a plurality of non-equidistant patterns, and comprising the following steps of:

A. detecting the longitudinal length of a single piece of printing paper to determine the longitudinal typesetting number of single hot stamping of a flat pressing flat stamping machine, namely taking the quotient obtained by dividing the longitudinal length of a stamping plate of the flat pressing flat stamping machine and the longitudinal length of the single piece of printing paper as the longitudinal typesetting number of the single hot stamping, and obtaining the number of the single piece of printing paper which can be accommodated by the single hot stamping according to the longitudinal typesetting number, namely the number of so-called 'multi-piecing hot stamping';

B. detecting the longitudinal distance between hot stamping marks on a single piece of printing paper, taking the geometric center line of each hot stamping mark as a detection end point of the distance, wherein each printing paper is provided with two or more hot stamping marks, the distance between the hot stamping marks on the same piece of printing paper is marked as L1, the distance between the last hot stamping mark of a first piece and the first hot stamping mark of a second piece of adjacent printing paper is marked as L2, the L2 has a cutting part of the adjacent printing paper, so that L2 is more than L1 and has constant numerical value, and the numerical value of L2 which is more than L1 is the same as the width of the cutting part arranged between the two pieces of printing paper;

C. setting an electrochemical aluminum film:

specific positions are set as follows: firstly, determining a first positioning cursor according to which the first hot stamping on an alumite needs to be carried out, setting anti-counterfeiting hot stamping marks AT1 AT positions corresponding to the first positioning cursor, and then sequentially setting anti-counterfeiting hot stamping marks AT2 AT N L1 intervals till ATN; anti-counterfeiting hot stamping marks ATN +1 are arranged at intervals L2, and anti-counterfeiting hot stamping marks ATN +2 are sequentially arranged at intervals N L1 till the intervals N + N; the hot stamping of even number of printing paper sheets can be completed by the first hot stamping according to the first positioning cursor; then, continuously setting an anti-counterfeiting hot stamping cursor for the second time till the Nth hot stamping according to the rule of setting the anti-counterfeiting hot stamping mark by the first hot stamping, and repeating the steps;

D. when the thermoprinting machine works, a first positioning cursor is read by thermoprinting for the first time, AT1, AT2 and 2N anti-counterfeiting marks are thermoprinted on a first certificate and a second piece of printing paper according to the set fixed distance, then the electrochemical aluminum film moves forwards for a specific distance L3, so that the second positioning cursor is shifted to the position of the first positioning cursor, the subsequent anti-counterfeiting marks are thermoprinted on a third piece of printing paper and a fourth piece of printing paper according to the fixed distance, and the like, and thermoprinting is continuously carried out.

2. The method for positioning and hot stamping the multi-point non-equidistant patterns once according to claim 1, wherein two hot stamping marks are arranged on each printing paper in the step C, and the steps are as follows:

3. The method for multi-point non-equidistant pattern positioning one-time hot stamping according to claim 1 or 2, wherein the number of the longitudinal typesetting and the number of the axial typesetting in the step one are both even.