Method for adjusting coil stock feeding straightness and coil stock feeding mechanism

Abstract

The invention provides a method for adjusting the feeding straightness of a coil stock and a coil stock feeding mechanism, the method is used for adjusting the straightness of the coil stock fed by a transmission roller structure, and the method comprises the following steps: determining whether the coil stock deviates towards a first deviation side or a second deviation side when moving, the first offset side and the second offset side are two opposite sides of the coil stock in the width direction; if the roll material deviates towards the first deviation side, the pressure applied to the side, away from the first deviation side, of the roll material by the conveying roller structure is larger than the pressure applied to the side, close to the first deviation side, of the roll material; and if the roll material deviates towards the second deviation side, the pressure applied to the side, away from the second deviation side, of the roll material by the conveying roller structure is larger than the pressure applied to the side, close to the second deviation side, of the roll material. That is to say, deviation correction can be conducted on the fed coil stock, control over the feeding straightness of the coil stock is achieved, and meanwhile the coil stock can be prevented from being damaged when deviation correction is conducted on the coil stock.

Description

Technical Field

[0001] The present invention belongs to the technical field of coil feeding, and more specifically, relates to a method for adjusting the straightness of coil feeding and a coil feeding mechanism. Background Art

[0002] Coil feeding generally involves clamping the coil with a pair of pressure rollers, and then driving the coil to continuously feed by rotating the pressure rollers. During the feeding process, due to factors such as uneven plate thickness, inconsistent left and right precision of the pressure rollers, or wear after long-term use, the coil cannot move straight forward.

[0003] Existing rectification methods such as Figure 1 As shown, generally, mechanical rectification wheels are added before and after the pressure rollers to limit the advancing direction of the coil. However, since the rectification wheels prevent the coil from deviating in a mechanical manner, when the deviation degree of the coil is relatively large, the mutual force between the rectification wheel on the deviation side and the coil becomes very large, which may cause deformation of the coil edge. Summary of the Invention

[0004] The present invention aims to provide a method for adjusting the straightness of coil feeding and a coil feeding mechanism. This method can rectify the feeding coil and achieve the control of the straightness of coil feeding. At the same time, it can also avoid damaging the coil when rectifying the coil.

[0005] The technical solution adopted by the present invention is a method for adjusting the straightness of coil feeding, which is used to adjust the straightness of the coil fed by a transmission roller structure. The method includes:

[0006] Determine whether the coil deviates towards the first deviation side or the second deviation side when moving, where the first deviation side and the second deviation side are the relative two sides of the coil in the width direction;

[0007] When the coil deviates towards the first deviation side, make the pressure applied by the transmission roller structure to the side of the coil far from the first deviation side greater than the pressure applied to the side close to the first deviation side;

[0008] When the coil deviates towards the second deviation side, make the pressure applied by the transmission roller structure to the side of the coil far from the second deviation side greater than the pressure applied to the side close to the second deviation side.

[0009] That is to say, in a method for adjusting the straightness of coil feeding in the present application, when the pressures exerted by the transmission roller structure on different sides of the coil are different, the coil will shift towards the side with the greater pressure. Therefore, first, it is determined whether the coil shifts towards the first offset side or the second offset side during movement. If the coil shifts towards the first offset side, the pressure exerted by the transmission roller structure on the side of the coil far from the first offset side can be made greater than the pressure exerted on the side close to the first offset side, so that the coil can shift towards the second offset side. If the coil shifts towards the second offset side, the pressure exerted by the transmission roller structure on the side of the coil far from the second offset side can be made greater than the pressure exerted on the side close to the second offset side, so that the coil can shift towards the first offset side, thereby correcting the advancing direction of the coil. This method can correct the deviation of the feeding coil and achieve the control of the straightness of coil feeding. At the same time, it can also avoid damaging the coil when correcting the deviation of the coil.

[0010] Optionally, determining whether the coil shifts towards the first offset side or the second offset side during movement includes:

[0011] Determining the initial position of the edge of the coil in the width direction when the coil moves along a straight line;

[0012] Determining whether the edge of the coil shifts towards the first offset side or the second offset side relative to the initial position during movement.

[0013] Optionally, before determining whether the coil shifts towards the first offset side or the second offset side during movement, it further includes:

[0014] Judging whether the coil shifts in the width direction during movement.

[0015] Optionally, judging whether the coil shifts in the width direction during movement includes:

[0016] Judging whether the edge of the coil shifts relative to the initial position during movement.

[0017] Optionally, judging whether the edge of the coil shifts relative to the initial position during movement further includes:

[0018] Real-time detecting the moving position of the edge of the coil;

[0019] Judging whether the moving position shifts relative to the initial position.

[0020] Optionally, judging whether the coil shifts in the width direction during movement further includes:

[0021] Respectively determining the initial positions of the edges on both sides of the coil in the width direction when the coil moves along a straight line;

[0022] Determine whether the edges on both sides of the coil material shift relative to their initial positions when moving;

[0023] If the edges on both sides of the coil material shift in the same direction when moving, it is determined that the coil material shifts.

[0024] Optionally, determining whether the edge of the coil material shifts towards the first offset side or the second offset side relative to the initial position when moving further includes:

[0025] If the edges on both sides of the coil material shift towards the first offset side relative to their initial positions when moving, it is determined that the coil material shifts along the first offset side when moving;

[0026] If the edges on both sides of the coil material shift towards the second offset side relative to their initial positions when moving, it is determined that the coil material shifts along the second offset side when moving.

[0027] Optionally, the conveying roller structure includes a first pressing roller and a second pressing roller, and the first pressing roller and the second pressing roller cooperate to press the coil material tightly and drive the coil material to move;

[0028] Making the pressure exerted by the conveying roller structure on the side of the coil material far from the first offset side greater than the pressure exerted on the side close to the first offset side includes:

[0029] Making the end of the first pressing roller far from the first offset side move towards the second pressing roller, and / or making the end of the first pressing roller close to the first offset side move away from the second pressing roller;

[0030] Making the pressure exerted by the conveying roller structure on the side of the coil material far from the second offset side greater than the pressure exerted on the side close to the second offset side includes:

[0031] Making the end of the first pressing roller far from the second offset side move towards the second pressing roller, and / or making the end of the first pressing roller close to the second offset side move away from the second pressing roller.

[0032] Optionally, the first pressing roller is an integral structure extending along the width direction of the coil material;

[0033] The second pressing roller is an integral structure extending along the width direction of the coil material.

[0034] A coil material feeding mechanism, comprising:

[0035] The transmission roller structure includes a first pressure roller and a second pressure roller. The first pressure roller and the second pressure roller are arranged oppositely and can rotate in opposite directions to cooperate with clamping the coiled material and driving the coiled material to move.

[0036] The position detection structure is arranged on the moving path of the coiled material to detect the moving position of the coiled material, so as to determine whether the coiled material deflects towards the first deflection side or the second deflection side when moving. Wherein, the first deflection side and the second deflection side are the relative two sides of the coiled material in the width direction.

[0037] The pressure adjustment structure is drivingly connected to the first pressure roller.

[0038] When the coiled material deflects towards the first deflection side, the pressure adjustment structure drives the end of the first pressure roller away from the first deflection side to move towards the second pressure roller, and / or the pressure adjustment structure drives the end of the first pressure roller close to the first deflection side to move away from the second pressure roller, so that the pressure applied by the first pressure roller to the side of the coiled material far from the first deflection side is greater than the pressure applied to the side close to the first deflection side.

[0039] When the coiled material deflects towards the second deflection side, the pressure adjustment structure drives the end of the first pressure roller away from the second deflection side to move towards the second pressure roller, and / or the pressure adjustment structure drives the end of the first pressure roller close to the second deflection side to move away from the second pressure roller, so that the pressure applied by the first pressure roller to the side of the coiled material far from the second deflection side is greater than the pressure applied to the side close to the second deflection side.

[0040] Optionally, there are two sets of the position detection structures, and the two sets of the position detection structures are respectively arranged on both sides of the coiled material to respectively detect the edges on both sides of the coiled material. Description of the Drawings

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0042] Figure 1 It is a schematic structural diagram of the prior art;

[0043] Figure 2 It is one of the flow charts of the method for adjusting the straightness of the coiled material feeding provided by the embodiment of the present invention;

[0044] Figure 3 The second flowchart of the method for adjusting the straightness of coil material feeding in the implementation provided by the present invention;

[0045] Figure 4 The third flowchart of the method for adjusting the straightness of coil material feeding in the implementation provided by the present invention;

[0046] Figure 5 The structural schematic diagram of the coil material feeding mechanism in the implementation provided by the present invention.

[0047] Reference numerals:

[0048] 100, transmission roller structure; 110, first pressure roller; 120, second pressure roller;

[0049] 200, position detection structure; 300, pressure adjustment structure; 400, deviation rectifying wheel; 500, coil material. Specific embodiments

[0050] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clear and understandable, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0051] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0052] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the method and coil material feeding mechanism or element for adjusting the straightness of coil material feeding must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0053] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of some inventions, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0054] The present application provides a method for adjusting the straightness of coil feeding, which adjusts the straightness of the coil fed by the transmission roller structure so that the coil fed by the transmission roller structure can move in a straight line direction.

[0055] Refer to Figure 2 , a method for adjusting the straightness of coil feeding, comprising the following steps:

[0056] Step S200, determining whether the coil deflects towards the first deflection side or the second deflection side during movement, wherein the first deflection side and the second deflection side are opposite sides of the coil in the width direction.

[0057] It can be understood that the transmission roller structure generally drives the coil to feed by pressing the coil with two pressure rollers and rotating the pressure rollers. Therefore, when the transmission roller feeds the coil, due to factors such as uneven coil thickness, inconsistent precision at both ends of the transmission roller structure, or wear after long-term use, the coil cannot move straight forward, and the coil may deflect towards the first deflection side or the second deflection side during transmission. As Figure 5 shown, the first deflection side can be the left side in the advancing direction of the coil, and the second deflection side can be the right side in the advancing direction of the coil. Therefore, by determining whether the coil deflects towards the first deflection side or the second deflection side, it is convenient to adjust the moving direction of the coil subsequently.

[0058] Step S400, when the coil deflects towards the first deflection side, making the pressure applied by the transmission roller structure to the side of the coil away from the first deflection side greater than the pressure applied to the side close to the first deflection side. When the coil deflects towards the second deflection side, making the pressure applied by the transmission roller structure to the side of the coil away from the second deflection side greater than the pressure applied to the side close to the second deflection side.

[0059] It can be understood that when the pressures on different sides of the coil are different, the coil will deflect along different positions during movement. For example, when the pressure applied by the transmission roller structure on one side of the coil is greater than the pressure on the other side of the coil, the coil will deflect towards the side with greater pressure.

[0060] Therefore, when the coil deflects towards the first deflection side, the pressure applied by the transmission roller structure to the side of the coil away from the first deflection side can be made greater than the pressure applied to the side close to the first deflection side, so that the coil can deflect towards the second deflection side, thereby correcting the advancing direction of the coil and making the coil move in a straight line direction. When the coil deflects towards the second deflection side, the pressure applied by the transmission roller structure to the side of the coil away from the second deflection side can be made greater than the pressure applied to the side close to the second deflection side, so that the coil can deflect towards the first deflection side, thereby correcting the advancing direction of the coil and making the coil move in a straight line direction.

[0061] That is to say, in a method for adjusting the straightness of coil feeding in the present application, when the pressures exerted by the transmission roller structure on different sides of the coil are different, the coil will shift towards the side with greater pressure. Therefore, first, it is determined whether the coil shifts towards the first offset side or the second offset side during movement. If the coil shifts towards the first offset side, the pressure exerted by the transmission roller structure on the side of the coil away from the first offset side can be made greater than the pressure exerted on the side close to the first offset side, so that the coil can shift towards the second offset side. If the coil shifts towards the second offset side, the pressure exerted by the transmission roller structure on the side of the coil away from the second offset side can be made greater than the pressure exerted on the side close to the second offset side, so that the coil can shift towards the first offset side, thereby correcting the advancing direction of the coil. This method can correct the deviation of the feeding coil and achieve the control of the straightness of coil feeding, and at the same time, it can also avoid damaging the coil when correcting the deviation of the coil.

[0062] Refer to Figure 3 , in an embodiment, step S200, determining whether the coil shifts towards the first offset side or the second offset side during movement, may include the following steps:

[0063] Step S210, determining the initial position of the edge of the coil in the width direction when the coil moves along a straight line.

[0064] Step S220, determining whether the edge of the coil shifts towards the first offset side or the second offset side relative to the initial position during movement.

[0065] It can be understood that by the change of the edge of the coil relative to its initial position, it is convenient to determine whether the coil shifts towards the first offset side or the second offset side.

[0066] Refer to Figure 4 , in an embodiment, in order to improve the adjustment accuracy of the straightness of coil feeding, before step S200, it may further include:

[0067] Step S100, determining whether the coil shifts in the width direction during movement.

[0068] It can be understood that before determining whether the coil shifts towards the first offset side or the second offset side, it is first determined whether the coil has shifted during movement, so as to reduce the misinterpretation of the deviation caused by the structure of the coil itself and other reasons.

[0069] Specifically, step S100, determining whether the coil shifts in the width direction during movement, may include:

[0070] Step S110a, determining whether the edge of the coil shifts relative to the initial position during movement.

[0071] It can be understood that through the above method, it is easy to judge whether the coil stock is offset by the change in the position of the edge of the coil stock.

[0072] Further, in order to correct the offset coil stock in real time and quickly, in step S110, it is judged whether the edge of the coil stock is offset relative to the initial position when moving, which may specifically include:

[0073] Step S111a, detect the moving position of the edge of the coil stock in real time.

[0074] For example, the moving position of the edge of the coil stock can be detected in real time by a displacement detection device. Among them, the displacement detection device can be a position detection sensor or an angle detection sensor, etc.

[0075] Step S112a, judge whether the moving position is offset relative to the initial position.

[0076] It can be understood that by detecting the moving position of the edge of the coil stock in real time and comparing it with the initial position, it can be judged in real time whether the coil stock is offset, so that the offset coil stock can be corrected in time to ensure the straightness of the coil stock feeding.

[0077] In an embodiment, in order to further improve the adjustment accuracy of the straightness of the coil stock feeding, in step S100, it is judged whether the coil stock is offset in the width direction when moving, which may specifically include:

[0078] Step S111b, respectively determine the initial positions of the edges on both sides of the coil stock in the width direction when the coil stock moves along a straight line.

[0079] That is to say, when the coil stock moves along a straight line, the initial positions of the edges on both sides of the coil stock in the width direction are determined simultaneously.

[0080] Step S112b, judge whether the edges on both sides of the coil stock are offset relative to their initial positions when moving.

[0081] That is to say, when judging whether the coil stock is offset, the above method reduces or avoids the misjudgment of offset caused by reasons such as the structure of the coil stock itself by judging whether the edges on both sides of the coil stock are offset relative to their initial positions.

[0082] Step S113b, if the offset directions of the edges on both sides of the coil stock are the same when moving, it is determined that the coil stock is offset.

[0083] It can be understood that the above method can reduce or avoid the misjudgment of offset caused by reasons such as the structure of the coil stock itself.

[0084] For example, assume that the current position of the edge of the coil material near the first offset side is P1, the initial position of the edge near the first offset side when the coil material moves in a straight line is P10, and the offset amount when this edge offsets is D1. When this edge offsets towards the first offset side, P1 = P10 + D1; when this edge offsets towards the second offset side, P1 = P10 - D1.

[0085] Assume that the current position of the edge of the coil material near the second offset side is P2, the initial position of the edge near the first offset side when the coil material moves in a straight line is P20, and the offset amount when this edge offsets is D2. When this edge offsets towards the first offset side, P2 = P20 + D2; when this edge offsets towards the second offset side, P2 = P20 - D2.

[0086] Specifically, when P1 = P10 and P2 = P20 ± D2, it should be considered as the influence of the change in the edge of the coil material itself, and the coil material does not offset during the actual feeding process.

[0087] When P1 = P10 ± D1 and P2 = P20, it should be considered as the influence of the change in the edge of the coil material itself, and the coil material does not offset during the actual feeding process.

[0088] When P1 = P10 + D1 and P2 = P2 - D2, it should be considered as the influence of the change in the edge of the coil material itself, and the coil material does not offset during the actual feeding process.

[0089] When P1 = P10 - D1 and P2 = P2 + D2, it should be considered as the influence of the change in the edge of the coil material itself, and the coil material does not offset during the actual feeding process.

[0090] That is, in the above four cases, it can be considered that the offset of the edge of the coil material is only the change in the structure of the edge of the coil material itself, and the coil material does not offset during the actual feeding process.

[0091] When P1 = P10 + D1 and P2 = P2 + D2, it should be considered that the coil material offsets towards the first offset side.

[0092] When P1 = P10 - D1 and P2 = P2 - D2, it should be considered that the coil material offsets towards the second offset side.

[0093] That is, from the above two cases, it can be known that only when the edges on both sides of the coil material offset in the same direction simultaneously, it is considered that the coil material offsets during the actual feeding process.

[0094] That is, in step S220, to determine whether the edge of the coil material offsets towards the first offset side or the second offset side relative to the initial position during movement, specifically, it may include:

[0095] If the edges on both sides of the coil material shift towards the first offset side relative to their initial positions during movement, it is determined that the coil material shifts along the first offset side during movement.

[0096] If the edges on both sides of the coil material shift towards the second offset side relative to their initial positions during movement, it is determined that the coil material shifts along the second offset side during movement.

[0097] Refer to Figure 5 , in an embodiment, the transmission roller structure may include a first pressing roller and a second pressing roller. The first pressing roller and the second pressing roller cooperate to press the coil material tightly and drive the coil material to move.

[0098] In step S400, making the pressure exerted by the transmission roller structure on the side of the coil material away from the first offset side greater than the pressure exerted on the side close to the first offset side may specifically include:

[0099] Moving the end of the first pressing roller away from the first offset side towards the second pressing roller, and / or moving the end of the first pressing roller close to the first offset side away from the second pressing roller. That is, by increasing the clamping force on the coil material between the end of the first pressing roller away from the first offset side and the second pressing roller, the pressure on the side of the coil material away from the first offset side can be increased.

[0100] In step S400, making the pressure exerted by the transmission roller structure on the side of the coil material away from the second offset side greater than the pressure exerted on the side close to the second offset side may specifically include:

[0101] Moving the end of the first pressing roller away from the second offset side towards the second pressing roller, and / or moving the end of the first pressing roller close to the second offset side away from the second pressing roller. That is, by increasing the clamping force on the coil material between the end of the first pressing roller away from the second offset side and the second pressing roller, the pressure on the side of the coil material away from the second offset side can be increased.

[0102] In addition, in an embodiment, the first pressing roller is an integral structure extending along the width direction of the coil material. The second pressing roller is an integral structure extending along the width direction of the coil material.

[0103] It can be understood that the above structure enables the first pressing roller to tilt as a whole towards one side when increasing the pressure on one side edge of the coil material, so that the pressure received by the coil material in its width direction is linearly changed. For example, when the pressure exerted by the first pressing roller on the side of the coil material close to the first offset side is greater than that on the second offset side, the pressure received by the coil material gradually decreases in the direction away from the first offset side. This method can improve the stability and smoothness of the movement of the coil material when correcting the movement direction of the coil material, and at the same time can also prevent the pressure difference between the two sides of the coil material from being too large and damaging the coil material during the corrective movement.

[0104] In addition, refer toFigure 5 , this application also provides a coil feeding mechanism, including a transmission roller structure 100, a position detection structure 200, and a pressure adjustment structure 300.

[0105] The transmission roller structure 100 may include a first pressure roller 110 and a second pressure roller 120. The first pressure roller 110 and the second pressure roller 120 are oppositely arranged and can rotate in opposite directions to cooperate to clamp the coil 500 and drive the coil 500 to move.

[0106] The position detection structure 200 is arranged on the moving path of the coil 500 to detect the moving position of the coil 500 to determine whether the coil 500 deviates towards the first offset side or the second offset side during movement. Among them, the first offset side and the second offset side are the relative two sides of the coil 500 in the width direction. Among them, the displacement detection structure can be a position detection sensor or an angle detection sensor, etc.

[0107] The pressure adjustment structure 300 is drivingly connected to the first pressure roller 110. Among them, the pressure adjustment structure 300 can be a pneumatic adjustment device or a worm mechanism, etc.

[0108] When the coil 500 deviates towards the first offset side, the pressure adjustment structure 300 drives the end of the first pressure roller 110 away from the first offset side to move towards the second pressure roller 120, and / or the pressure adjustment structure 300 drives the end of the first pressure roller 110 close to the first offset side to move away from the second pressure roller 120, so that the pressure exerted by the first pressure roller 110 on the side of the coil 500 away from the first offset side is greater than the pressure exerted on the side close to the first offset side.

[0109] When the coil 500 deviates towards the second offset side, the pressure adjustment structure 300 drives the end of the first pressure roller 110 away from the second offset side to move towards the second pressure roller 120, and / or the pressure adjustment structure 300 drives the end of the first pressure roller 110 close to the second offset side to move away from the second pressure roller 120, so that the pressure exerted by the first pressure roller 110 on the side of the coil 500 away from the second offset side is greater than the pressure exerted on the side close to the second offset side.

[0110] Further, in some embodiments, in order to improve the adjustment accuracy of the straightness of the coil 500 feeding, two sets of position detection structures 200 may be provided. The two sets of position detection structures 200 are respectively arranged on both sides of the coil 500 to respectively detect the edges on both sides of the coil 500, so as to determine whether the edges on both sides of the coil 500 have deviated.

[0111] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for adjusting the straightness of coil material feeding, which is used to adjust the straightness of the coil material fed by the transmission roller structure, is characterized in that The method includes: Determining whether the coil material deflects towards the first deflection side or the second deflection side during movement, where the first deflection side and the second deflection side are opposite sides of the coil material in the width direction; When the coil material deflects towards the first deflection side, causing the conveying roller structure to apply a greater pressure to the side of the coil material away from the first deflection side than to the side close to the first deflection side; When the coil material deflects towards the second deflection side, causing the conveying roller structure to apply a greater pressure to the side of the coil material away from the second deflection side than to the side close to the second deflection side.

2. The method for adjusting the straightness of coil material feeding according to claim 1, wherein The determining whether the coil material deflects towards the first deflection side or the second deflection side during movement includes: Determining the initial position of the edge of the coil material in the width direction when the coil material moves in a straight line; Determining whether the edge of the coil material deflects towards the first deflection side or the second deflection side relative to the initial position during movement.

3. The method for adjusting the straightness of coil material feeding according to claim 2, characterized in that, Before determining whether the coil material deflects towards the first deflection side or the second deflection side during movement, it further includes: Judging whether the coil material deflects in the width direction during movement.

4. The method for adjusting the straightness of coil material feeding according to claim 3, characterized in that The judging whether the coil material deflects in the width direction during movement includes: Judging whether the edge of the coil material deflects relative to the initial position during movement.

5. The method for adjusting the straightness of coil material feeding according to claim 4, characterized in that, The judging whether the edge of the coil material deflects relative to the initial position during movement further includes: Real-time detecting the moving position of the edge of the coil material; Judging whether the moving position deflects relative to the initial position.

6. The method for adjusting the straightness of coil material feeding according to claim 3, wherein The judging whether the coil material deflects in the width direction during movement further includes: Respectively determining the initial positions of the edges on both sides of the coil material in the width direction when the coil material moves in a straight line; Judging whether the edges on both sides of the coil material deflect relative to their initial positions during movement; If the deflection directions of the edges on both sides of the coil material are the same during movement, it is determined that the coil material deflects.

7. The method for adjusting the straightness of coil material feeding according to claim 6, characterized in that, The determining whether the edge of the coil material deflects towards the first deflection side or the second deflection side relative to the initial position during movement further includes: If the edges on both sides of the coil material deflect towards the first deflection side relative to their initial positions during movement, it is judged that the coil material deflects along the first deflection side during movement; If the edges on both sides of the coil material deflect towards the second deflection side relative to their initial positions during movement, it is judged that the coil material deflects along the second deflection side during movement.

8. The method for adjusting the straightness of coil material feeding according to any one of claims 1 to 7, characterized in that The conveying roller structure includes a first pressing roller and a second pressing roller, and the first pressing roller and the second pressing roller cooperate to press the coil material tightly and drive the coil material to move; The causing the conveying roller structure to apply a greater pressure to the side of the coil material away from the first deflection side than to the side close to the first deflection side includes: Causing the end of the first pressing roller away from the first deflection side to move towards the direction close to the second pressing roller, and / or, causing the end of the first pressing roller close to the first deflection side to move away from the direction of the second pressing roller; The pressure applied by the transmission roller structure to the side of the coil material far from the second offset side is greater than the pressure applied to the side close to the second offset side, including: Moving the end of the first pressure roller far from the second offset side towards the second pressure roller, and / or moving the end of the first pressure roller close to the second offset side away from the second pressure roller.

9. The method for adjusting the straightness of coil material feeding according to claim 7, wherein, The first pressure roller is an integral structure extending along the width direction of the coil material; The second pressure roller is an integral structure extending along the width direction of the coil material.

10. A coil feeding mechanism, characterized in that, Including: A transmission roller structure, including a first pressure roller and a second pressure roller, which are oppositely arranged and can rotate in opposite directions to cooperate to clamp the coil material and drive the coil material to move; A position detection structure, arranged on the moving path of the coil material, to detect the moving position of the coil material to determine whether the coil material offsets towards the first offset side or the second offset side when moving, where the first offset side and the second offset side are the opposite sides of the coil material in the width direction; A pressure adjustment structure, drivingly connected to the first pressure roller; If the coil material offsets towards the first offset side, the pressure adjustment structure drives the end of the first pressure roller far from the first offset side towards the second pressure roller, and / or the pressure adjustment structure drives the end of the first pressure roller close to the first offset side away from the second pressure roller, so that the pressure applied by the first pressure roller to the side of the coil material far from the first offset side is greater than the pressure applied to the side close to the first offset side; If the coil material offsets towards the second offset side, the pressure adjustment structure drives the end of the first pressure roller far from the second offset side towards the second pressure roller, and / or the pressure adjustment structure drives the end of the first pressure roller close to the second offset side away from the second pressure roller, so that the pressure applied by the first pressure roller to the side of the coil material far from the second offset side is greater than the pressure applied to the side close to the second offset side.

11. The coil material feeding mechanism according to claim 10, wherein, There are two groups of the position detection structures, and the two groups of the position detection structures are respectively arranged on both sides of the coil material to respectively detect the edges on both sides of the coil material.

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