A coil material jump method and system for a roll-to-sheet device

Abstract

The present invention provides a coil jump method and system for a roll-to-sheet device, the coil jump method comprising an initialization step: the set value of Y is greater than a, and the default value of Y0 is Y-a; a determination step: according to X0, Y1, a, b, c, Y0, Y, S are obtained; an execution step: the Y+L1 coordinate information is transmitted to a cutter device, and when the sheet reaches the Y+L1 coordinate position, the cutter device cuts the sheet at the coordinate position. The beneficial effects of the present invention are: the present invention eliminates the shortcomings of the first generation: the waste of raw materials and the cost of rework; it also overcomes the shortcomings of the second and third generations of high waste, and minimizes the scope of waste as much as possible.

Description

Technical Field

[0001] The present invention relates to the field of electromechanical technology, and in particular to a coil jumping method and system for a roll-to-sheet device. Background Art

[0002] Roll-to-sheet equipment (RTP for short) is used to automatically attach roll-to-sheet film products to sheet modules. There are three main types of RTP:

[0003] a. Generally there is no SKIP (jump) function;

[0004] b. Equipped with a simple SKIP function, a defective piece can be excluded in advance before the piece is mounted;

[0005] c. It has a certain stretchable SKIP function, which can reduce SKIP loss to a certain extent.

[0006] The existing RTP has the following problems:

[0007] First generation technology: RTP without SKIP module: Once there is a defect, it will be directly attached to the sheet module; manual work is required to tear and attach the film, which is very time-consuming, and if there is a defect in one part of the film, the entire film will be scrapped, resulting in high loss.

[0008] Second generation technology: RTP with simple SKIP function: Once there is a defect, the entire film will be removed, resulting in high consumption, especially when the defects are dense, which will cause serious waste of machine time.

[0009] The third generation technology: takes into account the SKIP function to reduce extra waste, but in reality: more than 70% of the actual waste of SKIP exceeds the length of the entire film. Summary of the invention

[0010] The present invention provides a coil jump method of a roll-to-sheet device, comprising the following steps:

[0011] Initialization steps: The set value of Y is greater than a, and the default value of Y0 is Ya;

[0012] Determination steps: According to X0, Y1, a, b, c, we can get Y0, Y, S;

[0013] Execution steps: transmitting the Y+L1 coordinate information to the cutter device, and when the sheet reaches the Y+L1 coordinate position, the cutter device cuts the sheet at the coordinate position;

[0014] L1: The distance between the defect detection device and the cutter, Y: The last cutter position, Y0: The last cutter position, Y1: Temporary cutter position, X0: The defect position transmitted by the defect detection device, X1: The real-time position obtained from the encoder, S = 0 indicates normal flow, S = 1 indicates removal of the section, a: The length of the sheet in the direction of travel, b: The length of the minimum waste, c: The defect positioning tolerance range.

[0015] As a further improvement of the present invention, the determination step includes: If X0>Yc:

[0016] Y1 = max(X0 + c, Y + b);

[0017] When X0>Yc is not true, no action is taken and wait for the next scan cycle;

[0018] If X1>(Y+a+c):

[0019] If Y1>Y:

[0020] Y0=Y;

[0021] Y = Y1;

[0022] S = 1;

[0023] ELSE:

[0024] Y0=Y;

[0025] Y = Y + a;

[0026] S = 0;

[0027] When X1>(Y+a+c) is not true, no action is taken and wait for the next scan cycle; Y+a+c means updating the Y position coordinate.

[0028] As a further improvement of the present invention, in the execution step, the (S, Y0+L2) information is transmitted to the flow channel switch. When Y0+L2 is reached, the corresponding flow channel is opened according to the S value. L2: the distance between the defect detection device and the flow channel switch.

[0029] As a further improvement of the present invention, the coil jumping method also includes a zeroing step. In the zeroing step, after the encoder is zeroed, Y restores the initial setting value, and Y0 restores the default value to obtain a defective situation and a non-defective situation.

[0030] As a further improvement of the present invention, the zeroing step includes:

[0031] Case A: No defect, there is no defect within the distance b+c from the last cutter. When the last cutter is greater than the distance Y+a+c, it can be concluded that there must be a complete piece length between the current cutting position and the last cutting position. After the piece is cut, it will flow normally to the offset process.

[0032] Case B: There is a defect case 1. When a defect appears within the distance [Y, Y+a], assuming that the distance between the defect position X0 and the last cutting position Y is ≥ (bc); then the segment to be scrapped is [Y, X0+c]; assuming that the distance between the defect position X0 and the last cutting position Y is < (bc); then the segment to be scrapped is [Y, Y+b];

[0033] Case C: There is one defect Case 2. When a defect appears in the range [Y+a, Y+a+c], the segment to be scrapped is [Y, X0+c]. At this time, Y+X0+c>Y+a+c; the length to be scrapped at one time>a;

[0034] Case D: There is one defect Case 3. When a defect appears in the range [Yc, Y], the segment that needs to be scrapped is [Y, Y+b]. At this time, the state of the previous interval must be scrapped;

[0035] Case E: There are multiple defects Case 1, when multiple defects appear in the [Y, Y+a] interval, the distance to be cut is continuously updated with the position of the new defect; the final scrapped segment is [Y, Y+Max(Xn+c,Y+b)], where Xn is the coordinate of the last defect;

[0036] Case F: There are multiple defects in Case 2. When defects appear in the interval [Y+a,Y+a+c], the segment that needs to be scrapped is [Y,Xn+c]; at this time, Y+Xn+c>Y+a+c; the length of one scrapping>a.

[0037] The present invention also provides a coil jump system of a roll-to-sheet device, comprising:

[0038] Initialization module: make the set value of Y greater than a, and set the default value of Y0 to Ya;

[0039] Determination module: used to obtain Y0, Y, S according to X0, Y1, a, b, c;

[0040] Execution module: used to transmit the Y+L1 coordinate information to the cutter device, and cut when it reaches the position;

[0041] L1: distance between defect detection device and cutter, Y: last cutter position, Y0: last cutter position, Y1: temporary cutter position, X0: defect position transmitted by defect detection device, X: real-time position obtained from encoder, S = 0 indicates normal flow, S = 1 indicates removal of this section, a: length of sheet in travel direction, b: minimum waste length, c: defect positioning tolerance range.

[0042] As a further improvement of the present invention, the determination module includes:

[0043] If X0>Yc:

[0044] Y1 = max(X0 + c, Y + b);

[0045] If X1>(Y+a+c):

[0046] If Y1>Y:

[0047] Y0=Y;

[0048] Y = Y1;

[0049] S = 1;

[0050] ELSE:

[0051] Y0=Y;

[0052] Y = Y + a;

[0053] S=0.

[0054] As a further improvement of the present invention, in the execution module, the (S, Y0+L2) information is transmitted to the flow channel switch. When Y0+L2 is reached, the corresponding flow channel is opened according to the S value. L2: the distance between the defect detection device and the flow channel switch.

[0055] As a further improvement of the present invention, the coil jumping system also includes a zeroing module. In the zeroing module, after the encoder is zeroed, Y restores the initial setting value and Y0 restores the default value to obtain a defective situation and a non-defective situation.

[0056] As a further improvement of the present invention, the zeroing module includes:

[0057] Case A: No defect, there is no defect within the distance b+c from the last cutter. When the last cutter is greater than the distance Y+a+c, it can be concluded that there must be a complete piece length between the current cutting position and the last cutting position. After the piece is cut, it will flow normally to the offset process.

[0058] Case B: There is a defect case 1. When a defect appears within the distance [Y, Y+a], assuming that the distance between the defect position X0 and the last cutting position Y is ≥ (bc); then the segment to be scrapped is [Y, X0+c]; assuming that the distance between the defect position X0 and the last cutting position Y is < (bc); then the segment to be scrapped is [Y, Y+b];

[0059] Case C: There is one defect Case 2. When a defect appears in the range [Y+a, Y+a+c], the segment to be scrapped is [Y, X0+c]. At this time, Y+X0+c>Y+a+c; the length to be scrapped at one time>a;

[0060] Case D: There is one defect Case 3. When a defect appears in the range [Yc, Y], the segment that needs to be scrapped is [Y, Y+b]. At this time, the state of the previous interval must be scrapped;

[0061] Case E: There are multiple defects Case 1, when multiple defects appear in the [Y, Y+a] interval, the distance to be cut is continuously updated with the position of the new defect; the final scrapped segment is [Y, Y+Max(Xn+c,Y+b)], where Xn is the coordinate of the last defect;

[0062] Case F: There are multiple defects in Case 2. When defects appear in the interval [Y+a,Y+a+c], the segment that needs to be scrapped is [Y,Xn+c]; at this time, Y+Xn+c>Y+a+c; the length of one scrapping>a.

[0063] The beneficial effects of the present invention are as follows: the present invention eliminates the shortcomings of the first generation: waste of raw materials and rework costs; it also overcomes the shortcomings of the second and third generations of high waste and reduces the scope of waste as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1 is a schematic diagram of situation A;

[0065] Figure 2 is a schematic diagram of situation B;

[0066] Figure 3 is a schematic diagram of situation C;

[0067] Figure 4 is a schematic diagram of situation D;

[0068] Figure 5 is a schematic diagram of situation E;

[0069] Figure 6 This is a schematic diagram of situation F. DETAILED DESCRIPTION

[0070] The present invention discloses a coil jump method of a roll-to-sheet device, comprising the following steps:

[0071] Initialization steps: The set value of Y is greater than a. Explanation on the set value of Y: After changing the roll, the "last cutter position" has been cleared, and the initial value (that is, the set value) is required; the default value of Y0 is Ya, and Ya represents the length of the position coordinate relative to point O.

[0072] Determination steps: Based on X0, Y1, a, b, c, get Y0, Y, S.

[0073] Execution steps: transmit the Y+L1 coordinate information to the cutter device, and when the sheet reaches the Y+L1 coordinate position, the cutter device cuts the sheet at the coordinate position.

[0074] Definition: L1: distance between defect detection device and cutter, Y: last cutter position, Y0: last cutter position, Y1: temporary cutter position, X0: defect position transmitted by defect detection device, X1: real-time position obtained from encoder, S = 0 indicates normal flow, S = 1 indicates removal of the section, a: length in sheet travel direction, b: minimum waste length, c: defect positioning tolerance range.

[0075] The determination steps include:

[0076] If X0>Yc:

[0077] Y1 = max(X0 + c, Y + b);

[0078] When X0>Yc is not true, no action is taken and wait for the next scan cycle;

[0079] If X1>(Y+a+c):

[0080] If Y1>Y:

[0081] Y0=Y;

[0082] Y = Y1;

[0083] S = 1;

[0084] ELSE:

[0085] Y0=Y;

[0086] Y = Y + a;

[0087] S = 0;

[0088] When X1>(Y+a+c) is not true, no action is taken and wait for the next scan cycle; Y+a+c means updating the Y position coordinate.

[0089] The execution step also includes transmitting the (S, Y0+L2) information to the flow channel switch. When Y0+L2 is reached, the corresponding flow channel is opened according to the S value. L2: the distance between the defect detection device and the flow channel switch.

[0090] The coil jump method further includes a zeroing step, in which after the encoder is zeroed, Y is restored to an initial setting value, and Y0 is restored to a default value, including:

[0091] like Figure 1 As shown, situation A (no defect situation): there is no defect within the distance b+c from the last cutter. When the last cutter is greater than the distance Y+a+c, it can be concluded that there must be a complete piece length between the current (to be cut) position and the last cutter position. After the piece is cut, it flows normally to the offset process.

[0092] like Figure 2 As shown, situation B (one defect situation 1): when a defect appears within the distance [Y, Y+a], assuming that the distance between the defect position (X0) and the last cutting position (Y) is ≥ (bc); then the segment that needs to be scrapped is [Y, X0+c]; assuming that the distance between the defect position (X0) and the last cutting position (Y) is < (bc); then the segment that needs to be scrapped is [Y, Y+b].

[0093] like Figure 3 As shown, case C (case 2 with 1 defect): when a defect appears in the range [Y+a, Y+a+c], the segment that needs to be scrapped is [Y, X0+c]; at this time, Y+X0+c>Y+a+c; the length of one scrapping>a. The probability of this situation is c / a; when c is adjusted to a smaller value, the probability of this situation will decrease.

[0094] like Figure 4 As shown, case D (case 3 with 1 defect): When a defect appears in the range [Yc, Y], the segment that needs to be scrapped is [Y, Y+b]. At this time, the state of the previous interval must be scrapped. In other words, after this situation occurs, the total scrap length will be > a+b. In this case, no more than b materials may be wasted. The probability of this situation occurring is c / a; when c is adjusted to a smaller value, the probability of this situation will decrease.

[0095] like Figure 5 As shown, situation E (situation 1 with multiple defects): when multiple defects appear in the interval [Y, Y+a], the distance to be cut is continuously updated with the position of the new defect; the final scrap segment is [Y, Y+Max(Xn+c,Y+b)], Note: Xn is the coordinate of the last defect.

[0096] like Figure 6As shown, situation F (situation 2 with multiple defects): when defects appear in the interval [Y+a, Y+a+c], the segment that needs to be scrapped is [Y, Xn+c]; at this time, Y+Xn+c>Y+a+c; the length of one scrapping>a. The probability of this situation occurring is c / a; when c is adjusted to a smaller value, the probability of this situation will decrease.

[0097] The present invention eliminates the shortcomings of the first generation: waste of raw materials and rework costs; it also overcomes the shortcomings of the second and third generations of high waste and reduces the scope of waste as much as possible.

[0098] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A coil-to-sheet device coil-to-sheet jump method, It is characterized in that The steps include: Initialization steps: The set value of Y is greater than a, and the default value of Y0 is Ya; Determination steps: According to X0, Y1, a, b, c, get Y0, Y, S; Execution steps: transmitting the Y+L1 coordinate information to the cutter device, and when the sheet reaches the Y+L1 coordinate position, the cutter device cuts the sheet at the coordinate position; L1: distance between defect detection device and cutter, Y: last cutter position, Y0: last cutter position, Y1: temporary cutter position, X0: defect position transmitted by defect detection device, X1: real-time position obtained from encoder, S = 0 indicates normal flow, S = 1 indicates removal of this section, a: length of sheet in the direction of travel, b: minimum length of waste, c: defect positioning tolerance range; The determination step comprises: If X0>Yc: Y1=max(X0+c,Y+b); When X0>Yc is not true, no action is taken and wait for the next scan cycle; If X1>(Y+a+c): If Y1>Y: Y0=Y; Y=Y1; S=1； ELSE: Y0=Y; Y = Y + a; S=0； When X1> (Y+a+c) is not true, no action is taken and wait for the next scan cycle; Y+a+c means updating the Y position coordinate.

2. The coil jumping method according to claim 1, It is characterized in that In the execution step, the (S, Y0+L2) information is transmitted to the flow channel switch. When it reaches Y0+L2, the corresponding flow channel is opened according to the S value. L2: the distance between the defect detection device and the flow channel switch.

3. The coil skipping method according to any one of claims 1 to 2, It is characterized in that The coil jump method also includes a zeroing step. In the zeroing step, after the encoder is zeroed, Y is restored to the initial setting value, and Y0 is restored to the default value, so as to obtain a defective situation and a non-defective situation.

4. The coil jumping method according to claim 3, It is characterized in that The zeroing step comprises: Case A: No defect, there is no defect within the distance b+c from the last cutter. When the last cutter is greater than the distance Y+a+c, it can be concluded that there must be a complete piece length between the current cutting position and the last cutter position. After the piece is cut, it will flow normally to the offset process. Case B: There is a defect case 1. When a defect appears within the distance [Y, Y+a], assuming that the distance between the defect position X0 and the last cutting position Y is ≥ (bc); then the segment to be scrapped is [Y, X0+c]; assuming that the distance between the defect position X0 and the last cutting position Y is < (bc); then the segment to be scrapped is [Y, Y+b]; Case C: There is one defect Case 2. When a defect appears in the range [Y+a, Y+a+c], the section that needs to be scrapped is [Y, X0+c]; at this time, Y+X0+c>Y+a+c; the length of one scrapping>a; Case D: There is one defect Case 3. When a defect appears in the range [Yc, Y], the segment that needs to be scrapped is [Y, Y+b]. At this time, the state of the previous interval must be scrapped; Case E: There are multiple defects Case 1, when multiple defects appear in the [Y, Y+a] interval, the distance to be cut is continuously updated with the position of the new defect; the final scrapped segment is [Y, Y+Max(Xn+c,Y+b)], where Xn is the coordinate of the last defect; Case F: There are multiple defects in Case 2. When defects appear in the interval [Y+a,Y+a+c], the segment that needs to be scrapped is [Y,Xn+c]; at this time, Y+Xn+c>Y+a+c; the length of one scrapping>a.

5. A coil-to-sheet equipment coil-jumping system, It is characterized in that include: Initialization module: make the set value of Y greater than a, and set the default value of Y0 to Ya; Determination module: used to obtain Y0, Y, S according to X0, Y1, a, b, c; Execution module: used to transmit the Y+L1 coordinate information to the cutter device, and cut when it reaches the position; L1: distance between defect detection device and cutter, Y: last cutter position, Y0: last cutter position, Y1: temporary cutter position, X0: defect position transmitted by defect detection device, X1: real-time position obtained from encoder, S = 0 indicates normal flow, S = 1 indicates removal of this section, a: length of sheet in the direction of travel, b: minimum length of waste, c: defect positioning tolerance range; The determination module comprises: If X0>Yc: Y1=max(X0+c,Y+b); When X0>Yc is not true, no action is taken and wait for the next scan cycle; If X1>(Y+a+c): If Y1>Y: Y0=Y; Y=Y1; S=1； ELSE: Y0=Y; Y = Y + a; S=0； When X1> (Y+a+c) is not true, no action is taken and wait for the next scan cycle; Y+a+c means updating the Y position coordinate.

6. The coil skipping system according to claim 5, It is characterized in that In the execution module, the (S, Y0+L2) information is transmitted to the flow channel switch. When it reaches Y0+L2, the corresponding flow channel is opened according to the S value. L2: the distance between the defect detection device and the flow channel switch.

7. The coil skipping system according to any one of claims 5 to 6, It is characterized in that The coil jump system also includes a zeroing module. In the zeroing module, after the encoder is zeroed, Y is restored to the initial setting value, and Y0 is restored to the default value to obtain a defective situation and a non-defective situation.

8. The coil skipping system according to claim 7, It is characterized in that The zeroing module comprises: Case A: No defect, there is no defect within the distance b+c from the last cutter. When the last cutter is greater than the distance Y+a+c, it can be concluded that there must be a complete piece length between the current cutting position and the last cutter position. After the piece is cut, it will flow normally to the offset process. Case B: There is a defect case 1. When a defect appears within the distance [Y, Y+a], assuming that the distance between the defect position X0 and the last cutting position Y is ≥ (bc); then the segment to be scrapped is [Y, X0+c]; assuming that the distance between the defect position X0 and the last cutting position Y is < (bc); then the segment to be scrapped is [Y, Y+b]; Case C: There is one defect Case 2. When a defect appears in the range [Y+a, Y+a+c], the section that needs to be scrapped is [Y, X0+c]; at this time, Y+X0+c>Y+a+c; the length of one scrapping>a; Case D: There is one defect Case 3. When a defect appears in the range [Yc, Y], the segment that needs to be scrapped is [Y, Y+b]. At this time, the state of the previous interval must be scrapped; Case E: There are multiple defects Case 1, when multiple defects appear in the [Y, Y+a] interval, the distance to be cut is continuously updated with the position of the new defect; the final scrapped segment is [Y, Y+Max(Xn+c,Y+b)], where Xn is the coordinate of the last defect; Case F: There are multiple defects in Case 2. When defects appear in the interval [Y+a,Y+a+c], the segment that needs to be scrapped is [Y,Xn+c]; at this time, Y+Xn+c>Y+a+c; the length of one scrapping>a.

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