阅读说明：本技术 自动调整横切机切刀角度的方法和横切机 (Method for automatically adjusting angle of cutter of transverse cutting machine and transverse cutting machine ) 是由 李奇 于 2019-03-25 设计创作，主要内容包括：本发明提供一种用于横切机的自动调整切刀角度的方法和横切机。用于横切机的自动调整切刀角度的方法包括：当通过感测色标确认横切机在正常工作时,对切刀角度进行调整,实现正常切割；当感测到两个相邻的色标时的存储的第一角度Deg1和第二角度Deg2都不在[D-μ,D+μ]范围内,若|Deg2-Deg1|≤μ,按照不超过所述电机根据最大转速和最大转矩驱动刀辊对所述切刀在位置同步的基础上一个切割周期内能够进行的最大的角度调整量进行调整；若|Deg2-Deg1|>μ,则修改Deg1的值,使得Deg1＝Deg2,并继续感测后续色标并重复上述操作。本发明能够根据电机的最大调整能力自动调整横切机的切刀角度,无需降低生产速度,能够提高生产效率,同时减轻操作工的工作负担。(The invention provides a method for automatically adjusting the angle of a cutter of a transverse cutting machine and the transverse cutting machine. The method for automatically adjusting the angle of the cutter of the transverse cutting machine comprises the following steps: when the transverse cutting machine is confirmed to work normally through the sensing color code, the angle of the cutter is adjusted to realize normal cutting; when two adjacent color marks are sensed, the stored first angle Deg1 and second angle Deg2 are not in the range of [ D-mu, D + mu ], if the | Deg2-Deg1| is less than or equal to mu, the adjustment is carried out according to the maximum angle adjustment amount which can be carried out by the motor to drive the knife roller according to the maximum rotating speed and the maximum torque in one cutting period on the basis of the position synchronization of the cutting knife; if | Deg2-Deg1| > μ, the value of Deg1 is modified so that Deg1 is Deg2 and the sensing of subsequent color patches continues and the above operation is repeated. The invention can automatically adjust the cutter angle of the transverse cutting machine according to the maximum adjusting capacity of the motor without reducing the production speed, can improve the production efficiency and simultaneously reduce the work load of operators.)

1. A method for automatically adjusting the angle of a cutter of a transverse cutting machine is characterized by comprising the following steps:

step 1: the color mark sensor (30) sends the first time point information to the controller after sensing a color mark on the cut material at a first time point, and the controller stores the cutter angle at the first time point, determined and recorded by the encoder, sent by the encoder as a first angle Deg1, and then turns to step 2;

step 2: the controller determines Deg1 a relationship to [ D- μ, D + μ ];

if Deg 1E [ D-mu, D + mu ], go to step 7;

if it is notTurning to step 3;

and step 3: the color mark sensor (30) sends the second time point information to the controller after sensing the next color mark on the cut material at a second time point, the controller stores the cutter angle at which the cutter (20) at the second time point is positioned, which is sent by the encoder and determined and recorded by the encoder, as a second angle Deg2, and the step 4 is switched;

and 4, step 4: the controller determines Deg2 relationships to [ D-mu, D + mu ] and to Deg1 relationships,

if Deg2 e [ D- μ, D + μ ], modify the value of Deg1 so that Deg1 is Deg2, go to step 7;

if it is not

if it is not

and 5:

if D-Deg2 ≦ Dmax, modify the value of Deg1 so that Deg1 ≦ Deg2, go to step 7;

if D-Deg2 is larger than Dmax, the controller controls the motor to adjust the angle of the cutter (20) on the basis of position synchronization, the angle adjustment amount is Dx, and Dx is smaller than or equal to Dmax; modify the value of Deg1 so that Deg1 ═ Deg2+ Dx, go to step 2;

step 6: the controller modifies the value of Deg1 so that Deg1 is Deg2 and goes to step 3;

and 7: the controller controls the motor to carry out angle adjustment on the cutter (20) on the basis of position synchronization, and the angle adjustment amount is D-Deg 1;

d is the angle of the cutter (20) when the color mark sensor (30) detects the color mark under the condition that the cutter (20) and the color mark on the cut material are kept synchronous in position; mu is a preset angle value, mu is less than or equal to Dmax, and Dmax is the maximum angle adjustment amount which can be carried out by the motor according to the position synchronization of the cutter (20) in a cutting period when the motor drives the cutter roller (10) at a preset rotating speed according to the maximum rotating speed and the maximum torque; the cutter (20) is arranged on the circumferential outer edge surface of the cutter roller (10), and the cutter (20) is used for cutting cut materials.

2. The method of claim 1, wherein in step 1, if the color patch sensor (30) does not sense color patches on the cut material within a cutting cycle, the controller sets Deg1 such that Deg1 ═ D, goes to step 7.

3. The method according to claim 1, wherein in the step 5, if | D-Deg2| > Dmax, the controller controls the motor to perform an angle adjustment of the cutter (20), the angle adjustment Dx being Dmax.

4. The method of claim 1, wherein the controller stores at most only the first angle Deg1 and the second angle Deg2 simultaneously.

5. Automatic crosscut machine (H) of adjustment cutter angle, its characterized in that includes:

the cutter roll (10), the circumference outer fringe face of the cutter roll (10) is provided with a cutter (20), and the cutter (20) is used for cutting a cutting material;

a color patch sensor (30), the color patch sensor (30) for sensing a color patch on the cut material;

the motor is used for driving the knife roller (10) to rotate;

an encoder mounted on the motor for determining and recording the angle of the cutter (20);

a controller in signal communication with the color patch sensor (30), the motor, and the encoder;

wherein the crosscutter (H) automatically adjusts the angle of the cutting blade (20) using the method of any one of claims 1 to 4.

6. The crosscutting machine (H) according to claim 5, characterized in that it is a high-speed crosscutting machine.

7. The cross-cutting machine (H) according to any of the claims 5 and 6, characterized in that it is an inline compound cross-cutting machine.

Technical Field

The invention relates to the field of transverse cutting machines, in particular to a method for automatically adjusting the angle of a cutter of a transverse cutting machine and the transverse cutting machine.

Background

Typically, the cut of a cross-cut machine is a coil. After the previous roll is used up, it needs to be replaced with a new roll. At this time, joints must be formed between the rolls. Because of the introduction of the joint, the distance between the tail color scale of the previous roll and the head color scale of the following roll is no longer the standard cut length. In this case, the angle of the cross-cutter blade needs to be reset to restore positional synchronization of the blade and the color patch. The cutting length refers to the length between two adjacent color codes on the coil stock in a normal production state. The above position synchronization means that when the color mark sensor senses the color mark, the angle of the cutter should be as follows: when the color code reaches the cutting position along the feeding direction, the cutter just rotates to the cutting position.

In the traditional scheme, an operator is required to reduce the speed of the transverse cutting machine unit, and the angle of the cutter is manually adjusted according to the position of a new coil color code. This way will reduce the production speed of crosscut unit, influence production efficiency to greatly increased operative employee's work burden.

Disclosure of Invention

The following presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to determine the key or critical elements of the present invention, nor is it intended to limit the scope of the present invention. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later.

In view of the above, the present invention provides a method for automatically adjusting the angle of a cutter for a cross cutting machine and a cross cutting machine.

According to one aspect of the present invention there is provided a method for automatically adjusting the angle of a cutter for a cross-cutting machine, the method comprising the steps of:

step 1: the color mark sensor sends the information of the first time point to the controller after sensing a color mark on the cut material at the first time point, the controller stores the cutter angle at the first time point, which is sent by the encoder and determined and recorded by the encoder, as a first angle Deg1, and the operation goes to step 2;

step 2: the controller determines Deg1 a relationship to [ D- μ, D + μ ];

if Deg 1E [ D-mu, D + mu ], go to step 7;

if it is not

Turning to step 3;

and step 3: the color mark sensor sends the second time point information to the controller after sensing the next color mark on the cut material at a second time point, the controller stores the cutter angle at the second time point, determined and recorded by the encoder, sent by the encoder as a second angle Deg2, and the step goes to step 4;

and 4, step 4: the controller determines Deg2 relationships to [ D-mu, D + mu ] and to Deg1 relationships,

if Deg2 e [ D- μ, D + μ ], the value of Deg1 is modified so that Deg1 is Deg 2; go to step 7;

if it is not

And | Deg2-Deg1| is less than or equal to mu, turning to the step 5;

if it is not

And | Deg2-Deg 1->μ, go to step 6;

and 5:

if D-Deg2 ≦ Dmax, modify the value of Deg1 so that Deg1 ≦ Deg2, go to step 7;

if D-Deg2 is larger than Dmax, the controller controls the motor to adjust the angle of the cutter on the basis of position synchronization, the angle adjustment amount is Dx, and Dx is smaller than or equal to Dmax; modify the value of Deg1 so that Deg1 ═ Deg2+ Dx, go to step 2;

step 6: the controller modifies the value of Deg1 such that Deg1 ═ Deg 2; turning to step 3;

and 7: the controller controls the motor to adjust the angle of the cutter on the basis of position synchronization, and the angle adjustment amount is D-Deg 1;

d is the cutter angle of the cutter when the color mark sensor detects the color mark when the cutter and the color mark on the cut material keep synchronous in position; mu is a preset angle value, mu is less than Dmax, and Dmax is the maximum angle adjustment amount which can be carried out by the motor in a cutting cycle on the basis of the position synchronization of the cutter under the maximum rotating speed and the maximum torque drive of the cutter roller under the preset rotating speed; the cutter is disposed on the peripheral outer edge surface of the cutter roller, and the cutter is configured to cut a cut material.

When the transverse cutting machine works, the ideal condition is that the transverse cutting machine is always in a position synchronization state, namely the cutter and a color code on a cut material always keep the position synchronization. Under the synchronous state of position, when the color mark sensor sensing color mark, cutter angle is D. The cutter angle here refers to an angle from a cutting position to a position of the cutter in a direction opposite to a rotating direction of the cutter roll. In actual production, the value of D is determined using the following method: if the distance from the sensing point of the color patch sensor to the cutting position is L, the feeding speed of the cutting material is v, and the time taken for completing one cutting cycle is T, the time T1 required by a color patch from the sensing point to the cutting position is equal to L/v, the time T2 of the cutter rotating from the angle D to the cutting position is equal to T multiplied by D/360, and the time T1 is equal to T2 when the position is synchronous, so that D is equal to 360 multiplied by L/VT. A cutting cycle is defined herein as the time from one cutting by the cutting blade to the next cutting. The cutter roller drives the cutter to rotate 360 degrees in one cutting period. The color patch sensor sensing point is the point at which the color patch sensor can sense the color patch when the color patch reaches this sensing point. The cutting position refers to the position where the cutting knife can complete the operation of cutting the cut material.

In actual production, the color codes on the cutter and the cut material deviate from the position synchronization due to external factors such as tension fluctuation, slippage and the like. Typically, such deviations are of relatively small magnitude. To cope with this, a predetermined angle value μ is introduced. And at the time point when the color code sensor senses the color code, if the cutter angle determined and sent by the encoder is in the [ D-mu, D + mu ] area, the controller judges that the cutter and the color code on the cutting material are synchronous in position, and performs angle adjustment and cutting under the state of position synchronization.

The value of μ can be preset according to actual production requirements. In order to synchronously adjust the deviation positions of the color marks on the cutter and the cut material due to external factors such as tension fluctuation, slippage and the like when the transverse cutting machine works normally, the deviation positions can be synchronously adjusted at one time, and the value of mu is required to meet the condition that mu is less than or equal to Dmax.

If the color scale sensor senses the color scale at the first time point, the controller stores the cutter angle, which is sent by the encoder and determined and recorded by the encoder, of the cutter at the first time point as a first angle Deg 1. If the first angle Deg1 is in the region of [ D-mu, D + mu ], namely Deg1 epsilon [ D-mu, D + mu ], the controller judges that the crosscut machine is in a position synchronization state, and carries out angle adjustment and cutting in the position synchronization state, wherein the angle adjustment amount is D-Deg 1.

If the first angle Deg1 is not [ D- μ, D + μ]In, i.e.The color patch sensor will continue to sense the next color patch. If the color patch sensor senses the next color patch at a second time point, the controller stores the cutter angle at which the cutter is located at the second time point, which is sent by the encoder and determined and recorded by the encoder, as a second angle Deg2. If the second angle Deg2 is [ D-mu, D + mu ]]In the region, i.e., Deg2 ∈ [ D-mu, D + mu]If the cutter and the next color code are in position synchronization, modifying the value of the first angle Deg1 to make Deg1 equal to Deg2, and adjusting and cutting in a position synchronization state, wherein the angle adjustment amount is D-Deg 1. Here, since Deg1 is Deg2, the angle adjustment amount also corresponds to D-Deg2.

If both the first angle Deg1 and the second angle Deg2 occur at other than [ D- μ, D + μ]Areas, i.e.

And is

The controller determines that the cutter and the color markings on the cut material have lost positional synchronization, which is often more likely to occur when a new roll is replacedAnd (4) generating. To cope with this, in such a manner as described above, the controller makes a judgment according to the following different situations and performs different steps to restore the positional synchronization of the cutter and the color patches on the cut material.

If | Deg2-Deg1| ≦ μ, determining that the two adjacent color codes sensed correspond to valid color codes, and the controller will control the motor to perform cutter angle adjustment, and if D-Deg2 ≦ Dmax, the motor may complete cutter angle adjustment within one cutting cycle, modify the value of Deg1 so that Deg1 equals Deg2, go to step 7, where, since Deg1 equals Deg2, the angle adjustment amount in step 7 also corresponds to D-Deg 2; if D-Deg2> Dmax, the motor can not complete the cutter angle adjustment in one cutting period, the angle adjustment amount is Dx, Dx is less than or equal to Dmax, the value of Deg1 is modified, so that Deg1 is Deg2+ Dx, and the step 2 is carried out. Dmax is the maximum angle adjustment amount which can be carried out by the motor in a cutting cycle on the basis of position synchronization of the cutter under a certain rotating speed according to the maximum rotating speed and the maximum torque driving cutter roller.

If | Deg2-Deg1| > μ, it is determined that at least one of the two adjacent color patches sensed is not a valid color patch, the controller modifies Deg1 so that Deg1 is Deg2, and goes to step 3.

By the method, the angle of the cutter can be automatically adjusted in the production process of the transverse cutting machine, so that the transverse cutting machine can be continuously produced at normal production speed without reducing the production speed for manual adjustment, the production efficiency is improved, and the workload of operators is greatly reduced.

It should be noted that, since the cutting production of the cross cutting machine is a continuous and cyclic process, the above method is also cyclically implemented in the production process of the cross cutting machine, and after the position synchronization is realized by adjusting the color scale according to the above steps, the method will start from step 1 again in the subsequent production process.

Optionally, in an example of the above aspect, in step 1, if the color patch sensor does not sense the color patch on the cut material in one cutting cycle, the controller sets Deg1 such that Deg1 ═ D, goes to step 7.

In such a manner, if the color code sensor does not sense the color code on the cut material in a cutting period, the controller judges that the color code in the cutting period is missing, and at the moment, the cutter angle is set to be the cutter angle when the position is synchronous, namely, the cutter angle is not adjusted, and the cutting action is finished. Therefore, unnecessary adjustment of the cutter in the absence of color marks can be avoided, and loss is reduced.

Optionally, in an example of the above aspect, in step 5, when | D-Deg2| > Dmax, the controller controls the motor to perform angle adjustment on the cutting knife, where an angle adjustment amount Dx is Dmax.

In such a manner, when the angle adjustment amount to be adjusted exceeds Dmax, that is, cannot be adjusted in place in one cutting cycle, the maximum angle adjustment amount Dmax of the motor in one cutting cycle is used for adjustment. Therefore, in the subsequent cutting period, the cutter can be adjusted to the position as soon as possible, so that the cutter and the color code on the cut material can be restored to be synchronous in position as soon as possible, the cutter returns to a normal production state, and the loss of the cut material is reduced.

Optionally, in one example of the above aspect, the controller stores at most only the first angle Deg1 and the second angle Deg2 simultaneously.

In this way, the controller only needs to store the first angle Deg1 and the second angle Deg2 at most, and the redundant angle values will be released in time, specifically, the controller releases Deg2 after the step 4 is executed under Deg2 e [ D- μ, D + μ ]; after the steps 5 and 6 are completed, the Deg2 will be released by the controller respectively; upon completion of step 7, both Deg1 and Deg2 will be released by the controller. In the actual production process, particularly in the high-speed production process, the angle of the cutter is automatically adjusted by repeatedly and circularly using the method, so that the accumulation of data can be avoided, the data amount processed by the controller is reduced, and the rapid and accurate calculation and the corresponding operation are more favorably carried out.

According to another aspect of the present invention, there is provided a cross cutting machine which automatically adjusts an angle of a cutting blade, including: a cutter roll having a cutter disposed on a circumferential outer edge surface thereof, the cutter being configured to cut a cut material; a color patch sensor configured to sense a color patch on a cut material; a motor configured to drive the knife roller to rotate; an encoder mounted on the motor configured to determine and record the angle of the cutting blade; the controller is in signal connection with the color code sensor, the motor and the encoder; wherein the crosscutting machine automatically adjusts the angle of the cutting blade using the method of any one of claims 1 to 4.

In such a way, the transverse cutting machine can automatically adjust the angle of the cutter and perform production cutting, and manual adjustment is performed without reducing the production speed, so that the production speed and efficiency can be improved, and the workload of operators is reduced.

Optionally, in one example of the above aspect, the cross-cutting machine is a high speed cross-cutting machine.

Since the method according to any one of claims 1 to 4 is based on the fact that the motor adjusts the maximum angle adjustment Dmax that can be made by the cutting blade in a cutting cycle on the basis of the position synchronization of the cutting blade as a function of its maximum rotational speed, maximum torque and rotational speed during operation, the motor is not overloaded or unable to perform the cutting task because of too fast a blanking feed speed or too short a duration of a cutting cycle, the transverse cutting machine is particularly suitable for high-speed transverse cutting machines in this way.

Optionally, in one example of the above aspect, the cross-cutting machine is an inline composite cross-cutting machine.

The on-line composite transverse cutting machine is a device for on-line working of a composite machine and a transverse cutting machine. For example, in the printing industry, the compounding of the laser film and the paperboard, the peeling of the laser film and the transverse cutting of the paperboard after the laser film is peeled can be completed at one time by using a corresponding online compounding transverse cutting machine.

In the above manner, the cross cutting machine is particularly suitable for an inline composite cross cutting machine. Because the transverse cutting machine combines the compound machine and the transverse cutting machine into a whole, if the traditional mode is used, the production speed of the transverse cutting machine is reduced, and the angle of the cutter is manually adjusted, so that the cutting speed is reduced, and the operation of a compound part is influenced, thereby influencing the whole compound transverse cutting production. Meanwhile, due to the addition of the composite part, the difficulty of restoring the original production speed after the manual adjustment is finished is increased. The online composite transverse cutting machine using the method can automatically complete the adjustment of the angle of the cutter without reducing the production speed, and can effectively overcome the problems.

Drawings

A further understanding of the nature and advantages of the present disclosure may be realized by reference to the following drawings. In the drawings, similar components or features may have the same reference numerals.

FIG. 1 is a flow diagram of a method for automatically adjusting the angle of a cutter for a cross-cutting machine according to one embodiment of the present invention;

fig. 2 is a cross cutting machine using a method of automatically adjusting the angle of a cutting blade according to one embodiment of the present invention.

Reference numerals:

10: knife roller

20: cutting knife

30: color code sensor

C1: conditions are as follows: deg 1E [ D-mu, D + mu ]

C2: conditions are as follows:

c3: conditions are as follows:

c4: conditions are as follows:and | Deg2-Deg1| is less than or equal to mu

C5: conditions are as follows:

and | Deg2-Deg 1->μ

C6: conditions are as follows: dmax is less than or equal to D-Deg2

C7: conditions are as follows: D-Deg2> Dmax

Detailed Description

The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thereby implement the subject matter described herein, and are not intended to limit the scope, applicability, or examples set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as needed. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with respect to some examples may also be combined in other examples.

As used herein, the term "include" and its variants mean open-ended terms in the sense of "including, but not limited to. The term "based on" means "based at least in part on". The terms "one embodiment" and "an embodiment" mean "at least one embodiment". The term "another embodiment" means "at least one other embodiment". The terms "first," "second," and the like may refer to different or the same object. Other definitions, whether explicit or implicit, may be included below. The definition of a term is consistent throughout the specification unless the context clearly dictates otherwise.

The invention provides a method for automatically adjusting the angle of a cutter of a transverse cutting machine and the transverse cutting machine. A method according to one embodiment of the invention, comprising the steps of:

step 1: the color mark sensor 30 sends information of a first time point to a controller after sensing a color mark on the cut material at the first time point, the controller stores the cutter angle at the first time point, determined and recorded by the encoder, sent by the encoder as a first angle Deg1, and the step 2 is switched to;

step 2: the controller determines Deg1 a relationship to [ D- μ, D + μ ];

if Deg 1E [ D-mu, D + mu ], go to step 7;

if it is not

Turning to step 3;

and step 3: the color mark sensor 30 sends the second time point information to the controller after sensing the next color mark on the cut material at a second time point, and the controller stores the cutter angle at which the cutter 20 is located at the second time point, which is sent by the encoder and determined and recorded by the encoder, as a second angle Deg2, and goes to step 4;

and 4, step 4: the controller determines Deg2 relationships to [ D-mu, D + mu ] and to Deg1 relationships,

if Deg2 e [ D- μ, D + μ ], the value of Deg1 is modified so that Deg1 is Deg 2; go to step 7;

if it is notAnd | Deg2-Deg1| is less than or equal to mu, turning to the step 5;

if it is not

And | Deg2-Deg 1->μ, go to step 6;

and 5: the controller controls the motor to perform angle adjustment on the basis of position synchronization of the cutter 20,

if D-Deg2 ≦ Dmax, modify the value of Deg1 so that Deg1 ≦ Deg2, go to step 7;

if D-Deg2 is larger than Dmax, the angle adjustment amount is Dx, and Dx is less than or equal to Dmax; modify the value of Deg1 so that Deg1 ═ Deg2+ Dx, go to step 2;

step 6: the controller modifies the value of Deg1 such that Deg1 ═ Deg 2; turning to step 3;

and 7: the controller controls the motor to carry out angle adjustment on the cutter 20 on the basis of position synchronization, and the angle adjustment amount is D-Deg 1;

wherein D is an angle of the cutter 20 when the color mark sensor 30 detects the color mark when the cutter 20 and the color mark on the cut material are kept in position synchronization; mu is a preset angle value, mu is less than or equal to Dmax, and Dmax is the maximum angle adjustment amount which can be carried out by the motor in a cutting cycle on the basis of the position synchronization of the cutter 20 under the maximum rotating speed and the maximum torque drive of the cutter roller 10; the cutter 20 is disposed on the circumferential outer peripheral surface of the cutter roller 10, and the cutter 20 is configured to cut a cut material.

A method for automatically adjusting a cutter angle for a cross cutting machine and a cross cutting machine according to embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a flow diagram of a method for automatically adjusting the cutter angle for a cross-cutting machine according to one embodiment of the present invention.

As shown in fig. 1, step 1 is first performed resulting in a first angle Deg1 of the cross-cut machine. Then, step 2 is executed, and when the condition C1 is met, the step 7 is switched to; if the condition C2 is satisfied, go to step 3. Step 3 is performed to obtain a second angle Deg2. Step 4 is executed, if the condition C3 is satisfied, the value of Deg1 is modified so that Deg1 is Deg2, and the process goes to step 7; if the condition C4 is met, go to step 5; if condition C5 is satisfied, go to step 6. In step 5, if the condition C6 is satisfied, modify the value of Deg1 so that Deg1 is Deg2, go to step 7; if the condition C7 is satisfied, after the angle adjustment with the adjustment amount Dx is performed, the value Deg1 is modified so that Deg1 becomes Deg2+ Dx, and the process proceeds to step 2. In this step 6, the value of Deg1 is modified so that Deg1 is Deg2 and the process goes to step 3.

In step 1, if the crosscut machine does not sense the color mark on the cut material in one cutting cycle, and the controller determines that the color mark on the cut material in the cutting cycle is missing, the value of the first angle Deg1 is set, so that Deg1 is D, and the process goes to step 7. Under this condition, the cutter need not do any adjustment, avoids unnecessary loss.

The value of mu is preset according to production requirements and is not strictly limited, and in principle, in order to synchronously adjust the position deviation of color marks on a cutter and a cut material at one time due to external factors such as tension fluctuation, slippage and the like under the normal working condition of a transverse cutting machine, the value of mu should meet the condition that mu is less than or equal to Dmax. For example, in the case of a roll with a spacing of 500 mm between the two patches, if the cut is a stretch-stretch material, the value of μ is typically 10.8 ° or 14.4 °; if the cut material is a material that is not readily stretchable, the value of μ is typically 7.2 °. Considering also μ ≦ Dmax, in both cases the value of μ takes on the smaller values between 14.4 °, 10.8 ° or 7.2 ° and Dmax, i.e. μ ═ min {14.4 °, Dmax } or μ ═ min {10.8 °, Dmax }, and μ ═ min {7.2 °, Dmax }. In practice, Dmax is usually larger than the angle in the above example.

Dmax is related to the maximum rotational speed and the maximum torque of the motor, and is also related to the production speed of the cross cutting machine. For example, the maximum speed of the motor is 3000 rpm, and the redundant speed is 200 rpm if the production speed is 2800 rpm, and 1000 rpm if the production speed is 2000 rpm. Accordingly, the Dmax of the latter is larger than that of the former at the two rotation speeds. If the angle difference between the cutter angle and the angle difference D of the cutter when the color mark is sensed is larger than Dmax, namely the cutter angle cannot be adjusted to be synchronous with the color mark in one cutting period, angle adjustment can be performed once at first, the adjustment amount Dx is less than or equal to Dmax, and then the adjustment is continued in the subsequent cutting period until the adjustment is in place. Alternatively, in this case, the adjustment amount Dx of the angle adjustment is Dmax. Therefore, the cutter can be adjusted in place as soon as possible, the loss of cut materials is reduced,

in the method, during the continuous working process of the transverse cutting machine, a color mark sensor can sense a plurality of color marks, an encoder can correspondingly determine a plurality of cutting knife angle values and send the cutting knife angle values to a controller, and the controller can correspondingly record and store a plurality of angles and execute corresponding steps according to the angles. Alternatively, the controller may store only two angles at most, the first angle Deg1 and the second angle Deg2, respectively. Specifically, in the case of Deg2 ∈ [ D- μ, D + μ ] in step 4, after the execution is completed, the controller releases Deg 2; after the steps 5 and 6 are completed, Deg2 will be released by the controller respectively; upon completion of step 7, both Deg1 and Deg2 will be released by the controller. Therefore, the data amount processed by the controller can be reduced as much as possible, and quick and accurate calculation and operation are facilitated in the actual production process, particularly in the high-speed production process.

According to the method for automatically adjusting the angle of the cutting blade of the cross cutting machine of one embodiment of the present invention, in step 1, if the color mark sensor 30 does not sense the color mark on the cut material in one cutting cycle, the controller sets the value of the first angle Deg1 so that Deg1 is D, and goes to step 7.

According to the method for automatically adjusting the angle of the cutting knife of the cross cutting machine, in step 5, when | D-Deg2| > Dmax, the controller controls the motor to adjust the angle of the cutting knife 20, and the angle adjustment amount Dx is Dmax.

In the method for automatically adjusting the angle of the cutting blade of the cross-cutting machine according to one embodiment of the present invention, the controller records and stores only at most the angles Deg1 and Deg2 at which the cutting blade is located when the color patch sensor 30 determined and recorded by the encoder senses two adjacent color patches.

Fig. 2 is a cross cutting machine using a method of automatically adjusting the angle of a cutting blade according to one embodiment of the present invention.

As shown, the crosscut machine H includes: the cutter roll 10, there are cutters 20 on the peripheral surface of the circumference of the cutter roll 10; a color patch sensor 30.

Wherein the cross cutting machine H automatically adjusts the angle at which the cutting knife 20 is positioned using the method of any one of claims 1 to 4.

The cross-cutting machine H using this method may be various types of cross-cutting machines. Optionally, since the angle adjustment of the cross cutting machine H to the cutting knife is based on the motor performance and capability and can be adjusted accordingly, the overload does not exceed the motor performance and capability, and therefore, the cross cutting machine H can be a high-speed cross cutting machine with a high speed, for example, a high-speed cross cutting machine with a production speed of more than 100-.

Alternatively, the crosscutter H using this method may be an in-line compound crosscutter. The on-line composite transverse cutting machine is characterized in that the material compounding operation and the transverse cutting operation are continuously completed, and once the production speed is reduced, the operation speed of the transverse cutting part is influenced, and the operation of the material compounding part is also influenced. The transverse cutting machine H can better overcome the problems without reducing the production speed to adjust the angle of the cutter.

The cutter 20 is used to cut the cut material.

The color patch sensor 30 is used to sense the color patch of the cut material.

A motor (not shown) is used to drive the knife roller 10 to rotate, and the rotation of the knife roller 10 drives the cutter 20 to rotate and complete the cutting of the cut material at the cutting position.

An encoder (not shown) is mounted on the motor for determining and recording the angle of the cutter 20.

The controller (not shown) is in signal connection with the color code sensor 30, the motor and the encoder, and the motor is controlled to execute corresponding steps according to information sent by the color code sensor and the encoder.

According to an embodiment of the invention, the crosscutting machine is a high speed crosscutting machine.

According to an embodiment of the invention, the crosscutting machine is an inline composite crosscutting machine.

In the above embodiment, if the material to be compounded is the laser film and the cardboard, after the laser film and the cardboard are compounded and the laser film is peeled off, there is a possibility that some color patch is not attached to the cardboard or some pattern attached from the laser film to the cardboard is mistaken as a color patch by the color patch sensor, and the crosscutting machine using the method of the present invention is particularly suitable for cutting such a cut material. Moreover, the laser film and the paperboard are thin blanks, and are suitable for being cut by a high-speed transverse cutting machine.

The detailed description set forth above in connection with the appended drawings describes exemplary embodiments but does not represent all embodiments that may be practiced or fall within the scope of the claims. The term "exemplary" used throughout this specification means "serving as an example, instance, or illustration," and does not mean "preferred" or "advantageous" over other embodiments. The detailed description includes specific details for the purpose of providing an understanding of the described technology. However, the techniques may be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described embodiments.

The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.