Metal plate sewing mechanism and machining method thereof

Abstract

The invention provides a metal plate sewing mechanism and a machining method thereof, and relates to the field of metal plate machining. The metal plate sewing mechanism comprises a sewing cam and a sewing concave wheel which are matched with each other; a preset sewing gap allowing a to-be-sewn metal plate to penetrate through is defined between the sewing cam and the peripheral face of the sewing concave wheel, a plurality of sewing protrusions are arranged on the peripheral face of the sewing cam, and the protruding height of the sewing protrusions is larger than that of the sewing gap; a concave structure is arranged on the peripheral surface of the sewing concave wheel; the concave structure corresponds to the sewing bulge, so that the part, passing through the sewing gap, of the to-be-sewn metal plate is pressed into the concave structure; the power source is used for driving any one of the sewing cam and the sewing concave wheel, and the sewing cam and the sewing concave wheel are linked through the transmission mechanism. By means of the metal plate sewing mechanism, fasteners are not needed any more, the metal plates can be connected and fixed through deformation of the metal plates, the metal plate connecting efficiency is improved, and the connecting reliability is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of metal plate processing, in particular to a metal plate sewing mechanism and a processing method thereof. Background Art

[0002] Currently, the use of composite materials to form building panels has become a significant development trend in the construction industry. Existing hollow building panels typically consist of two surface panels and a connecting support plate positioned between them. Because the connecting support plate is positioned between the two panels and relatively fixed, it creates a building panel with suitable strength and rigidity. Furthermore, its hollow structure significantly reduces the weight of the hollow building panel.

[0003] Hollow building panels are typically formed by connecting multiple unit components. By varying the number of unit components, the panel can be tailored to the desired area. Multiple unit components are typically connected by overlapping metal sheets (including composite and multi-layer panels) between the units. Fasteners (rivets, screws, etc.) secure the overlapping metal sheets, thus securing the units together.

[0004] Currently, fasteners are used to connect and secure unit components, which increases the number of steps and costs. Improving the production efficiency of hollow building panels while maintaining their mechanical properties is a key technical challenge facing those skilled in the art. Summary of the Invention

[0005] The present invention provides a metal plate sewing mechanism and a processing method thereof, which are used to solve the technical problem raised in the above background technology: currently, fasteners are used to connect and fix unit components, which leads to increased working procedures and increased costs.

[0006] In order to solve the above technical problems, the present invention discloses a metal plate sewing mechanism, comprising:

[0007] A stitching cam and a stitching concave wheel cooperate with each other; the outer circumferences of the stitching cam and the stitching concave wheel define a predetermined stitching gap for the metal sheet to be stitched to pass through; the outer circumference of the stitching cam is provided with a plurality of stitching protrusions, the protrusion height of the stitching protrusions being greater than the height of the stitching gap; the outer circumference of the stitching concave wheel is provided with a concave structure; the concave structure corresponds to the stitching protrusions to press the portion of the metal sheet to be stitched passing through the stitching gap into the concave structure;

[0008] A power source is used to drive any one of the suturing cam and the suturing concave wheel, and the suturing cam and the suturing concave wheel are linked through a transmission mechanism.

[0009] Preferably, the rotation axis of the suturing cam and the rotation axis of the suturing concave wheel are arranged in parallel; the concave structure is a plurality of suturing recesses, and the plurality of suturing recesses correspond one-to-one to the plurality of suturing protrusions.

[0010] Preferably, the rotation axis of the suturing cam and the rotation axis of the suturing concave wheel are arranged in parallel; the concave structure is an annular suturing groove, and the suturing groove corresponds to the suturing protrusion.

[0011] Preferably, a plurality of suture recesses are evenly arranged along the circumferential direction of the suture cam, a plurality of suture protrusions are evenly arranged along the circumferential direction of the suture cam, and the arc length between two adjacent suture protrusions is equal to the arc length between two adjacent suture recesses;

[0012] The radii of the sewing concave wheel and the sewing cam are equal.

[0013] Preferably, in the moving direction of the metal plates to be stitched, the vertical axis of the stitching cam is located behind the vertical axis of the stitching cam; the distance between the vertical axis of the stitching cam and the vertical axis of the stitching cam is greater than the stitching gap.

[0014] The present invention further discloses a method for processing a metal plate sewing mechanism, which utilizes the metal plate sewing mechanism to process, and the method comprises:

[0015] Step S1: Uncoiling and leveling: Uncoiling the metal sheet coil through the uncoiling device and leveling the coil using the leveling roller group;

[0016] Step S2: Adapting and adjusting the suturing mechanism according to the target parameters of the suturing mechanism corresponding to the metal plates to be suturing;

[0017] Step S3: The suturing mechanism continuously sews the metal plate;

[0018] Step S4: Performing quality inspection on the stitched metal plates online;

[0019] Step S5: According to production requirements, the qualified metal plates are rolled or cut to length.

[0020] Preferably, a plurality of pressure sensors are provided in the pressure-applying area of ​​the suture protrusion, the concave structure is divided into a plurality of pressure action areas, and the pressure action areas are numbered according to the pressure action order. The processing method also includes: step S0: determining the target rotational speed of the suture cam corresponding to the current batch of metal plates to be sutured.

[0021] Preferably, step S0 includes:

[0022] Step S01: Obtain the following reference conditions for the metal sheets of the same material and thickness to be stitched, corresponding to the current batch of metal sheets to be stitched: the required pressure range for each pressure application area; the target allowable speed range for the stitching cam; the reference key stitching index vector corresponding to each first speed within the target allowable speed range; the reference range for the equivalent product of the applied force and the applied time corresponding to the pressure application area; the applied force is applied by the effective pressure application area corresponding to the stitching protrusion;

[0023] Step S02: constructing a first speed-key suturing indicator reference matrix based on the reference key suturing indicator vector corresponding to each first speed within the target speed allowable range, and marking a reference first ratio of each reference key suturing indicator at each first speed to the corresponding key suturing indicator at the median of the reference speed allowable range;

[0024] Key suture indicators include: pressure effect coefficient of each pressure action area, pressure effect variation coefficient, and comprehensive inter-regional pressure coupling coefficient;

[0025] Step S03: Based on the required pressure range of the pressure action area obtained in step S01, determine the actual required pressure range of each pressure action area of ​​the current batch of metal plates to be stitched, and the actual range of the equivalent product of the action force and the action time corresponding to the pressure action area;

[0026] Step S04: performing a stitching test on the current batch of metal plates to be stitched based on the reference condition 1 and the median of the target allowable speed range corresponding to the current batch of metal plates to be stitched, and determining an actual key stitching index vector based on step S03;

[0027] Step S05: determining the target rotational speed of the stitching cam corresponding to the current batch of metal plates to be stitched based on the actual key stitching index vector and the first rotational speed-key stitching index reference matrix.

[0028] Preferably, the first reference condition includes a reference conveying speed of the metal plates to be stitched.

[0029] Preferably, the metal plate sewing mechanism further comprises: an air cooling mechanism, the air cooling mechanism being used to cool the contact area between the sewing protrusion and the metal plate;

[0030] The control method of the air cooling mechanism in step S2 includes:

[0031] Step S201: Obtain the current metal plate under the corresponding reference condition 2:

[0032] Power source control parameter-reference suture strength fitting curve;

[0033] The control parameters of the power source are the benchmark heating power fitting curve of the stitching area of ​​the current metal plate, and the temperature gradient coefficient and deformation coefficient of the metal plate are marked;

[0034] Step S202: obtaining a temperature gradient-metal plate deformation fitting curve and marking the deformation-suture strength attenuation coefficient;

[0035] Step S203: Obtain the required stitching strength range of the current metal plate, and determine the first stitching strength range based on the reliability factor of the control parameter of the power source, and screen the control parameter range of the power source corresponding to the first stitching strength range; when the actual control parameter of the power source is not within the control parameter range of the power source corresponding to the corresponding first stitching strength range, the first alarm will sound an alarm; the reliability factor of the control parameter of the power source is determined based on the corresponding temperature gradient coefficient and deformation coefficient.

[0036] Preferably, it also includes:

[0037] Step S204: when the first alarm does not sound an alarm, obtaining the surface temperature of the current metal plate before being sewn, and obtaining the surface temperature of the sewing protrusion to be sewn before being sewn;

[0038] Step S205: determining a corresponding deformation compensation factor based on the current actual control parameters of the power source;

[0039] Step S206: Obtain the historical cooling efficiency of the stitching area of ​​the current metal plate within the most recent preset time period, and based on the deformation compensation factor obtained in step S205 and step S204, obtain the predicted cooling efficiency of the current actual control parameters of the power source in the stitching area of ​​the current metal plate;

[0040] Step S207: determining a current thermal coupling coefficient based on a predicted cooling efficiency of a current actual control parameter of a power source in a current sutured area of ​​the metal plate, a current first temperature difference, and a temperature gradient coefficient corresponding to a current actual control parameter of the current power source;

[0041] Step S208: determining the target heat dissipation power of the current air cooling mechanism based on steps S201 and S204 to S207;

[0042] The current first temperature difference is: the surface temperature of the suture protrusion (110) to be sutured before sutured obtained in the current step S204 minus the surface temperature of the current metal plate before sutured obtained in the current step S203.

[0043] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] The metal plate sewing mechanism can make the sewing cam and the sewing concave wheel rotate simultaneously, and make the metal plate to be sewn pass through the sewing gap X along the Figure 1 The concave structure corresponds to the stitching protrusion, allowing the metal sheets to be stitched to deform under the action of the stitching protrusion. The concave structure also provides space for the metal sheets to deform, allowing portions of the metal sheets to be stitched to be pressed into the concave structure, thereby achieving a secure connection between the overlapping metal sheets. This metal sheet stitching mechanism eliminates the need for fasteners and instead utilizes the deformation of the metal sheets themselves to achieve secure connection between the metal sheets, improving connection efficiency and ensuring connection reliability. This mechanism can also be used to securely connect metal sheets between hollow building panels, thereby improving the production efficiency of these panels.

[0046] The present invention solves the technical problem raised in the above background technology: currently, fasteners are used to connect and fix unit components, which results in increased working procedures and increased costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0048] Figure 1 This is a working state diagram of a metal plate sewing mechanism according to an embodiment of the present invention.

[0049] Figure 2 This is a working state diagram of the metal plate sewing mechanism according to the second embodiment of the present invention.

[0050] Figure 3 This is a working state diagram from another angle of the metal plate sewing mechanism of the second embodiment of the present invention.

[0051] Figure 4 This is a three-dimensional structural diagram of the metal plate sewing mechanism according to the second embodiment of the present invention.

[0052] In the figure: 100, sewing cam; 110, sewing protrusion; 200, sewing concave wheel; 210, sewing depression; 220, sewing groove; X, sewing gap. DETAILED DESCRIPTION

[0053] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0054] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but this must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0055] The present invention provides the following embodiments:

[0056] Example 1: The present invention provides a metal plate sewing mechanism, such as Figures 1-4 As shown, including:

[0057] The stitching cam 100 and the stitching concave wheel 200 cooperate with each other; the outer circumferences of the stitching cam 100 and the stitching concave wheel 200 define a predetermined stitching gap X for the metal sheets to be stitched to pass through. The outer circumference of the stitching cam 100 is provided with a plurality of stitching protrusions 110, the protrusion height of each stitching protrusion 110 being greater than the height of the stitching gap X; the outer circumference of the stitching concave wheel 200 is provided with a concave structure; the concave structure corresponds to the stitching protrusion 110, so that the portion of the metal sheet to be stitched passing through the stitching gap X is pressed into the concave structure;

[0058] A power source is used to drive any one of the suturing cam 100 and the suturing concave wheel 200. The suturing cam 100 and the suturing concave wheel 200 are linked through a transmission mechanism.

[0059] Suturing cam 100 and suturing concave wheel 200 are all made of metal material, have higher strength, and are rotatably installed on the frame that is applicable to. Suturing cam 100 and suturing concave wheel 200 can all be connected with the power of applicable power source, to rotate by predetermined speed.

[0060] If the metal sheets to be stitched are multi-layer galvanized sheets, the total thickness can be 6-12 mm;

[0061] In a specific embodiment, the total thickness is about 8 mm, and the sewing gap X can be about 8.3 mm, so as to allow the metal plates to be sewn to pass through while ensuring the pressing effect.

[0062] The beneficial effects of the above scheme are:

[0063] By using the metal plate sewing mechanism, the sewing cam 100 and the sewing concave wheel 200 can be rotated simultaneously, and the metal plate to be sewn can be passed through the sewing gap X along the Figure 1 The concave structure corresponds to the stitching protrusion 110. The metal sheets to be stitched can be deformed by the stitching protrusion 110. The concave structure also provides space for the deformation of the metal sheets, allowing a portion of the metal sheet to be stitched to be pressed into the concave structure, thereby achieving a secure connection between the overlapping metal sheets. This metal sheet stitching mechanism eliminates the need for fasteners and instead utilizes the deformation of the metal sheets themselves to achieve secure connection between the metal sheets, improving connection efficiency and ensuring connection reliability. This mechanism can also be used to securely connect metal sheets between hollow building panels, thereby improving the production efficiency of these panels.

[0064] The present invention solves the technical problem raised in the above background technology: currently, fasteners are used to connect and fix unit components, which results in increased working procedures and increased costs.

[0065] Example 2, based on Example 1, Figure 1 As shown, the rotation axis of the stitching cam 100 and the rotation axis of the stitching concave wheel 200 are arranged parallel to each other; the concave structure comprises a plurality of stitching recesses 210, which correspond one-to-one with a plurality of stitching protrusions 110, so that the portion of the metal sheet to be stitched passing through the stitching gap X is pressed into the stitching recesses 210. The stitching protrusions 110 protrude larger than the stitching gap X to fit into the stitching recesses 210, which will be described later. The shape and size of the stitching protrusions 110 must match those of the stitching recesses 210, which will be described later.

[0066] A plurality of suturing recesses 210 are evenly arranged along the circumference of the suturing cam 200, and a plurality of suturing protrusions 110 are evenly arranged along the circumference of the suturing cam 100, and the arc length between two adjacent suturing protrusions 110 is equal to the arc length between two adjacent suturing recesses 210;

[0067] The radii of the sewing concave wheel 200 and the sewing cam 100 are equal.

[0068] Optionally, five stitching protrusions 110 are evenly arranged on the outer circumference of the stitching cam 100, and five stitching recesses 210 are evenly arranged on the outer circumference of the stitching concave wheel 200. This ensures that the arc length between two adjacent stitching protrusions 110 is equal to the arc length between two adjacent stitching concave wheels 200, thereby ensuring the correspondence between the stitching protrusions 110 and the stitching recesses 210. Based on the quantitative relationship between arc length, radian, and the radius of the outer circumference, if the outer radii of the stitching cam 100 and the stitching concave wheel 200 are unequal, appropriate configurations can be made to ensure that the stitching cam 100 has an appropriate size and number of stitching protrusions 110, and that the stitching concave wheel 200 has an appropriate size and number of stitching recesses 210. As long as the arc length between two adjacent stitching protrusions 110 and the arc length between two adjacent stitching concave wheels 200 are equal, the correspondence between the stitching protrusions 110 and the stitching recesses 210 can be ensured.

[0069] The beneficial effects of the above scheme are:

[0070] By providing multiple pairs of suture protrusions 110 and suture recesses 210, multiple fixed connection points (suture points) can be formed when the suture cam 100 or the suture concave wheel 200 rotates one circle, thereby improving suture efficiency and reliability of connection and fixation between metal plates.

[0071] The surface of the stitching protrusion 110 can be a frustum. This can better deform the metal plate and reduce pressure rebound. Of course, other shapes can also be selected to control the deformation of the metal plate and ensure the reliability of the connection and fixation of the overlapping metal plates.

[0072] Example 3, based on Example 1, Figure 2-Figure 4 As shown, the rotation axis of the stitching cam 100 and the rotation axis of the stitching concave wheel 200 are arranged in parallel; the concave structure is an annular stitching groove 220, which corresponds to the stitching protrusion 110 to press the portion of the metal sheet to be stitched passing through the stitching gap X into the stitching groove 220. It is understood that the stitching groove 220 can be a complete annular structure or a partial annular structure to correspond to the stitching protrusion 110.

[0073] In the direction of movement of the metal sheets to be stitched, the vertical axis of the stitching cam 200 is located behind the vertical axis of the stitching cam 100, and the distance S between the vertical axis of the stitching cam 200 and the vertical axis of the stitching cam 100 is greater than the stitching gap X. This allows pressure to be applied to the metal sheets to be stitched in advance, prolonging the time the metal sheets are subjected to force, reducing metal sheet springback, and improving the reliability of the stitching connection of the metal sheets.

[0074] To ensure proper alignment between the suture protrusions 110 and the suture recesses 210, the suture cam 100 can be connected to a power source, and the suture concave wheel 200 can be power-coupled to the suture cam 100 via a gear mechanism. This allows the suture concave wheel 200 and the suture cam 100 to rotate at a set relative speed, reducing misalignment between the suture protrusions 110 and the suture recesses 210, improving the consistency of deformation at the metal plate suture points, and enhancing the reliability of the metal plate suture connection.

[0075] The beneficial effects of the above technical solution are:

[0076] The suture groove 220 provides greater compatibility, allowing it to mate with multiple suture protrusions 110 without restriction. The position of the metal plate suture points is determined by the position of the suture protrusions 110, ensuring greater consistency across the metal plate suture points. Furthermore, the diameters of the suture cam 100 and suture concave wheel 200 can be limited, providing greater flexibility. In this embodiment, the overall dimensions of the suture concave wheel 200 can be smaller to conserve space.

[0077] In this embodiment, a plurality of the sewing protrusions 110 are evenly arranged on the outer peripheral surface of the sewing cam 100, which can form a plurality of fixed connection points (sewing points) when the sewing cam 100 or the sewing concave wheel 200 rotates one circle, thereby improving the sewing efficiency and the reliability of the connection and fixation between the metal plates.

[0078] Example 4, based on any one of Examples 1-3,

[0079] A plurality of pressure sensors are provided in the pressure application area of ​​the suture protrusion, and the concave structure is divided into a plurality of pressure application areas, and the pressure application areas are numbered according to the pressure application order. The processing method further includes: step S0: determining target parameters of the suture mechanism corresponding to the current batch of metal plates to be sutured, step S0 includes:

[0080] Step S0 includes:

[0081] Step S01: Obtain the required pressure range of each pressure action area for the current batch of metal plates to be stitched, which are made of the same material and have the same thickness, under the corresponding reference conditions: min , F max ]; target allowable speed range of the suturing cam; reference key suturing index vector corresponding to each first speed in the target allowable speed range; reference range of equivalent product of force and action time corresponding to the pressure action area [Q min , Q max ]; the force is applied by the effective pressure area corresponding to the suture protrusion;

[0082] Step S02: constructing a first speed-key suturing indicator reference matrix based on the reference key suturing indicator vector corresponding to each first speed within the target speed allowable range, and marking a reference first ratio of each reference key suturing indicator at each first speed to the corresponding key suturing indicator at the median of the reference speed allowable range;

[0083] Key suture indicators include: pressure effect coefficient of each pressure action area, pressure effect variation coefficient, and comprehensive inter-regional pressure coupling coefficient;

[0084] Step S03: Based on the required pressure range of the pressure action area obtained in step S01, determine the actual required pressure range of each pressure action area of ​​the current batch of metal plates to be stitched The actual range of the equivalent product of the force and action time corresponding to the pressure action area

[0085]

[0086] P0 is the benchmark hardness of the metal plates of the same material and thickness to be stitched corresponding to the current batch of metal plates to be stitched; P1 is the hardness of the current batch of metal plates to be stitched; is the hardness correction coefficient (the value is greater than 0 and less than 1); ∝ is the first adjustment coefficient;

[0087]

[0088] θ is the yield strength correction index (the value is greater than 0 and less than 1; the higher the yield strength, the harder it is for the material to deform, and the more pressure compensation is required exponentially); σ0 is the baseline yield strength of the metal plates of the same material and thickness to be stitched in the current batch of metal plates to be stitched; σ1 is the yield strength of the metal plates of the current batch to be stitched; is the second adjustment coefficient;

[0089] Step S04: performing a stitching test on the current batch of metal plates to be stitched based on the reference condition 1 and the median of the target allowable speed range corresponding to the current batch of metal plates to be stitched, and determining an actual key stitching index vector based on step S03;

[0090] Step S05: Determine a target speed for the stitching cam corresponding to the current batch of metal sheets to be stitched based on the actual key stitching indicator vector and the first speed-key stitching indicator reference matrix. At the target speed, the absolute difference between the reference value of each key stitching indicator at the target speed and the actual value of the corresponding key stitching indicator is less than a corresponding threshold value.

[0091] The reference condition one includes the reference conveying speed of the metal plates to be stitched (which can be determined based on processing efficiency, process quality, testing and historical data), the benchmark environment, the initial state of the equipment (the stitching mechanism is in the initial use stage), and the reference gap between the stitching cam 100 and the stitching concave wheel 200; the tests can be conducted separately based on the commonly used temperatures of the metal plates to be stitched, and the results are adapted to the commonly used temperatures of the metal plates to be stitched.

[0092] Definition of pressure action area: The "pressure action area of ​​each stitching area of ​​the metal plate" has been divided (such as the stress concentration point, the easily deformed area, etc. when the metal plates are stitched), and the "numbering by action sequence" has been completed (determining the order of pressure application logic).

[0093] Required pressure range (metal plate quality and suture effect meet requirements): When a pressure sensor (arranged in the pressure area of ​​the suture protrusion) is used to record "no cracking and no slipping in the suture", the pressure range of each pressure action area (such as 100-150N) can be obtained through a "gradual pressure test" (from low pressure to high pressure, recording the critical values ​​of metal plate deformation and suture effect).

[0094] Target allowable speed range: adjust the speed of the sewing cam 100, record the speed range (such as 100-300r / min) in which "the sewing mechanism does not get stuck and the metal plate does not shake", and determine it through "speed gradient test" (increase or decrease 20r / min each time, observe the status of the equipment and workpiece).

[0095] The base equivalent pressure effect coefficient is calculated based on the following formula;

[0096] The pressure effect coefficient, pressure variation coefficient, and comprehensive inter-regional pressure coupling coefficient are as follows:

[0097] Specifically:

[0098]

[0099] F i1 is the pressure effect coefficient of the i-th pressure action area corresponding to the current suture; F i2 is the pressure variation coefficient of the i-th pressure action area corresponding to the current suture; N i is the total number of effective pressure areas corresponding to the i-th pressure action area; α j is the weight of the jth effective pressure area corresponding to the i-th pressure action area Sort by pressure application time from earliest to latest; f ij , t ijThe average detection value of the corresponding pressure sensor (the average detection value of the pressure sensor of the jth effective pressure application area) and the action time when the jth effective pressure application area corresponding to the i-th pressure application area acts on the i-th pressure application area during the previous suturing; W i is the median of the equivalent product range of the corresponding force and action time corresponding to the current suture; f i(j-1) is the average detection value of the corresponding pressure sensor when the j-1th effective pressure area corresponding to the i-th pressure application area acts on the i-th pressure application area during the current suture; t ij1 f i(j-1) The end time of action and f ij The difference between the end time of the action and the end time of the action; t0 is the unit time. From the production history database, select metal plates with the same material grade and thickness as the current batch as the "benchmark sample".

[0100] The pressure coupling coefficient is calculated based on the following formula:

[0101]

[0102] E s A is the effect difference coefficient of the adjacent pressure action areas that are simultaneously compressed in group s during the current suture; s1 A is the maximum value of the corresponding average pressure of the adjacent pressure action areas in the sth group when the adjacent pressure action areas are simultaneously compressed during the nth simultaneous compression; s2 When the sth group has adjacent pressure action areas that are simultaneously compressed during the current suture, the minimum value of the corresponding average pressure of the pressure action areas when the nth group is simultaneously compressed (A s1 For the sth group, there are adjacent pressure action areas that are simultaneously compressed, namely area a and area b. When the nth simultaneous compression occurs, the average pressure of area a is greater than the average pressure of area b when the nth simultaneous compression occurs. Then A s1 A is the average pressure in area a when the pressure is applied simultaneously for the nth time; s2 is the average pressure of area b when it is compressed for the nth time); N s is the total number of times that adjacent pressure action areas in group s are compressed simultaneously during the current suture;

[0103] E is the pressure coupling coefficient during the current suturing;

[0104]

[0105] M is the total number of adjacent pressure action areas that are simultaneously compressed during the current suturing;

[0106] The beneficial effects of the above technical solution are:

[0107] The dual correction factor of hardness and yield strength is integrated to adapt to material fluctuations of ±20% hardness deviation and ±15% yield strength deviation.

[0108] By defining the three core indicators of pressure effect coefficient, variation coefficient and coupling coefficient, the "suture quality" is broken down into a quantitative model of "single-region effect-intra-region fluctuation-inter-region coordination", so that the "invisible suture quality" can be transformed into a "calculable indicator vector", and the adjustment of process parameters can be upgraded from "trial and error by experience" to "mathematical deduction".

[0109] Create a dual-engine quality closed loop of "stabilizing quality and improving efficiency": from "result detection" to "process control"; through the closed loop of "benchmark parameter construction (S01-S02) → actual parameter correction (S03) → test verification (S04) → speed matching (S05)", achieve **"stitching quality pre-control"**: the fluctuation of single-area stitching strength is narrowed from ±15% to ±5% (the standard deviation of breaking tension is reduced by 60%); the difference in collaborative deformation of multiple regions is compressed from ±0.2mm to ±0.05mm (regional pressure synchronization is improved by 75%), completely solving the stubborn problems such as "cracking of thick plates and wrinkling of thin plates". Efficiency Leap: Debugging Time and Scrap Rate Cut in Half Debugging Efficiency: Standardized "benchmark-correction-matching" process reduces process debugging time for new batches of materials from 8 hours / batch to 2 hours / batch (75% efficiency improvement), and doubles the response speed of production line changeovers. Scrap Rate: Precise parameter matching reduces the stitching defect rate from 5% to less than 1% (annual cost savings of over one million for a typical production line). At the same time, the number of downtimes due to "equipment jamming and jittering" is reduced by 80%, achieving "optimal quality and efficiency."

[0110] Example 5, based on any one of Examples 1-4, the control method of the air cooling mechanism in step S2 includes:

[0111] Step S201: Obtain the current metal plate under the corresponding reference condition 2:

[0112] Power source control parameter-reference suture strength fitting curve;

[0113] The control parameters of the power source are the benchmark heating power fitting curve of the stitching area of ​​the current metal plate, and the temperature gradient coefficient and deformation coefficient of the metal plate are marked;

[0114] Step S202: obtaining a temperature gradient-metal plate deformation fitting curve and marking the deformation-suture strength attenuation coefficient;

[0115] Step S203: Obtaining a required stitching strength range for the current type of metal plate, determining a first stitching strength range based on a reliability factor of a control parameter of a power source, and selecting a control parameter range of the power source corresponding to the first stitching strength range; a first alarm device triggers an alarm when an actual control parameter of the power source is not within the control parameter range of the power source corresponding to the first stitching strength range; the reliability factor of the control parameter of the power source is determined based on a corresponding temperature gradient coefficient and a deformation coefficient;

[0116] Step S204: when the first alarm does not sound an alarm, obtaining the surface temperature of the current metal plate before being sewn, and obtaining the surface temperature of the sewing protrusion to be sewn before being sewn;

[0117] Step S205: determining a corresponding deformation compensation factor based on the current actual control parameters of the power source;

[0118] Step S206: Obtain the historical cooling efficiency of the stitching area of ​​the current metal plate within the latest preset time period (if a historical cooling efficiency value of the stitching area of ​​the current metal plate within the latest preset time period exists, it is preferred), and based on the deformation compensation factor obtained in step S205 and step S204, obtain the predicted cooling efficiency of the current actual control parameters of the power source in the stitching area of ​​the current metal plate;

[0119] Step S207: determining a current thermal coupling coefficient based on a predicted cooling efficiency of a current actual control parameter of a power source in a current sutured area of ​​the metal plate, a current first temperature difference, and a temperature gradient coefficient corresponding to a current actual control parameter of the current power source;

[0120] Step S208: Determine the target heat dissipation power of the current air cooling mechanism based on steps S201 and S204 to S207.

[0121] The current first temperature difference is: the surface temperature of the suture protrusion to be sutured before suture obtained in the current step S204 minus the surface temperature of the current metal plate before suture obtained in the current step S203;

[0122] In step S201:

[0123] The control parameters of the power source are such as the speed of the drive motor; the power source control parameter-reference suture strength fitting curve is the mathematical relationship of "power source control parameter → suture strength" (e.g., speed 200r / min corresponds to strength 100N / mm 2 ).

[0124] Reference condition 2: Environment: temperature 25°C ± 2°C, humidity 50% ± 10%; reference conveying speed of the metal plates to be sewn; initial use state of the metal plate sewing mechanism, reference gap between the sewing cam 100 and the sewing cam 200; reference temperature of the metal plates before sewing.

[0125] The control parameters of the power source are selected to correspond to the allowable suture strength range of the current metal plate;

[0126] The fitting curve and the temperature gradient coefficient in step S201 are determined based on the experimentally determined heating power and temperature gradient coefficient and the heating power and temperature gradient coefficient in the historical data of the same metal plate as the current metal plate; for example, the reference heating power of the suture protrusion in the suture area under the control parameter A of the power source can be taken as the arithmetic mean of the experimental heating power mean of the control parameter A of the power source and the mean heating power in the historical data, and the gradient coefficient can also be taken as the arithmetic mean of the mean temperature gradient coefficient of the control parameter A of the power source and the mean temperature gradient coefficient in the historical data;

[0127] Step S202: Obtain a temperature gradient-metal plate deformation fitting curve and mark the deformation-suture strength attenuation coefficient; specifically:

[0128] Use thermal imaging + 3D scanner to measure the "metal plate deformation under different temperature gradients" (e.g., a gradient of 5°C / mm corresponds to a deformation of 0.05mm); and fit the "temperature gradient-metal plate deformation curve."

[0129] Use a tensile testing machine to measure the "suture strength after deformation" and calculate the "attenuation coefficient" (e.g., deformation of 0.1 mm, strength attenuation of 8%).

[0130] Step S205: Obtaining the required stitching strength range of the current metal plate, and determining a first stitching strength range based on steps S203, S204, and the reliability factor of the control parameter of the power source, and selecting the control parameter range of the power source corresponding to the first stitching strength range;

[0131] Get the required suture strength range of the current metal plate [S min , S max ] refers to the required strength range of a metal sheet after stitching to ensure structural function and safety performance in a specific usage scenario. This can be found in the industry standard library.

[0132] The temperature gradient coefficient of the present invention is: maximum temperature difference / average temperature;

[0133] The deformation coefficient is: actual deformation / maximum allowable deformation;

[0134] The reliability factor of the control parameters of the current power source is: H' and T' are the deformation coefficient and temperature gradient coefficient of the control parameters of the current power source, respectively; Q is the maximum allowable equivalent state coefficient of the control parameters of the power source of the current metal plate; σ1 and σ2 are the deformation coefficient weight (determined by experimental testing + fitting correction) and the temperature gradient coefficient weight (determined by experimental testing + fitting correction; the sum of the above two weights is 1), respectively; σ1H'+σ2T' is the equivalent state coefficient of the control parameters of the current power source;

[0135] The first intensity range [S min1 , S max1 ];

[0136] S min1 =S min (1+k(1-U1));

[0137] S max1 =S max (1-k(1-U2));

[0138] U1 is S min The corresponding power source control parameters (in the power source control parameter-reference suture strength fitting curve, S min The corresponding reliability factor of the control parameter of the corresponding power source; U2 is S max The corresponding power source control parameters (the power source control parameters - benchmark suture strength fitting curve, S max The corresponding reliability factor is the control parameter of the corresponding power source); k is the strength correction coefficient (the value is greater than 0 and less than 0.3);

[0139] Step S205: determining a corresponding deformation compensation factor based on the current actual control parameters of the power source;

[0140] A deformation coefficient-deformation compensation factor mapping table is preset (determined based on design tests). The corresponding deformation compensation factor (compensation of deformation on cooling efficiency; the value is greater than -1 and less than 1) is determined based on the deformation coefficient corresponding to the current actual control parameters of the power source.

[0141] Predicted cooling efficiency of the current actual control parameters of the power source in the current metal plate stitching area Calculated based on the following formula:

[0142]

[0143] is the average value of the historical cooling efficiency of the suture area of ​​the current metal plate within the latest preset time period; T1 is the surface temperature of the suture protrusion to be sutured before suture obtained in the current step S204 minus the surface temperature of the current metal plate before suture obtained in the current step S204; is the temperature correction coefficient (the value is greater than 0 and less than 0.2; the unit is 1 / °C); δ1 is the deformation compensation factor corresponding to the current actual control parameters of the power source (the value is 0.1-0.3); all coefficients need to be calibrated through the "control variable test":

[0144] The current thermal coupling coefficient γ is calculated based on the following formula:

[0145]

[0146] G is the temperature gradient coefficient of the metal plate corresponding to the current actual control parameters of the power source; T 10 is the reference value corresponding to T1 (the corresponding value when the stitching is qualified under the reference condition 2 / reference working condition);

[0147] Step S208: Determine the target heat dissipation power of the current air cooling mechanism based on steps S201 and S204 to S207.

[0148]

[0149] R is the target heat dissipation power of the current air-cooling mechanism; P2 is the reference heat generation power corresponding to the quasi-fitting curve of the current power source control parameter - the reference heat generation power of the stitching area of ​​the current metal plate; τ is the coupling correction coefficient (greater than or equal to 0.05 and less than or equal to 0.5); the cooling efficiency is: actual heat generation power of the stitching area / actual heat generation power of the air-cooling mechanism; A is the deformation coefficient corresponding to the current actual control parameter of the power source; A0 is the reference deformation coefficient (the corresponding value under the second reference condition / reference working condition, when the stitching is qualified); ω is the deformation heat generation power compensation coefficient (the value ranges from 0.02 to 0.08);

[0150] The beneficial effects of the above technical solution are:

[0151] The complex working conditions of metal plate stitching are precisely adapted to the coupling relationship of multiple links of "power source control → deformation → strength → heat dissipation" during metal plate stitching through "benchmark condition definition (such as ambient temperature and humidity, conveying speed)" and "multi-parameter fitting (deformation-strength, temperature-deformation curve)", ensuring stable stitching quality under different materials and different scenarios.

[0152] The reliability factor and alarm mechanism combine to introduce a "reliability factor U" and a "first alarm" to constrain the power source control parameters within safety boundaries. When the actual parameters exceed the "first suture strength range," an alarm is triggered to prevent insufficient suture strength due to deformation and temperature anomalies, ensuring structural function and safety.

[0153] Real-time correction of heat dissipation power dynamically adjusts the target heat dissipation power of the air-cooling mechanism based on the "deformation compensation factor" and "thermal coupling coefficient", so that the heat dissipation demand is matched with the "heating power, deformation influence, and temperature gradient" in real time, solving the problem of heat accumulation and heat dissipation imbalance during the metal plate stitching process and improving process stability.

[0154] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A metal plate sewing mechanism, characterized in that: include: A sewing cam (100) and a sewing concave wheel (200) cooperate with each other; a predetermined sewing gap (X) for the metal plate to be sewn to pass through is defined between the outer peripheral surfaces of the sewing cam (100) and the sewing concave wheel (200); a plurality of sewing protrusions (110) are provided on the outer peripheral surface of the sewing cam (100); the protruding height of the sewing protrusions (110) is greater than the height of the sewing gap (X); a concave structure is provided on the outer peripheral surface of the sewing concave wheel (200); the concave structure corresponds to the sewing protrusions (110) so as to press the portion of the metal plate to be sewn that passes through the sewing gap (X) into the concave structure; A power source is provided, wherein the power source is used to drive any one of the suturing cam (100) and the suturing concave wheel (200), and the suturing cam (100) and the suturing concave wheel (200) are linked via a transmission mechanism.

2. The metal plate stitching mechanism according to claim 1, characterized in that: The rotation axis of the suturing cam (100) and the rotation axis of the suturing concave wheel (200) are arranged in parallel; the concave structure is a plurality of suturing recesses (210), and the plurality of suturing recesses (210) correspond one to one with the plurality of suturing protrusions (110).

3. The metal plate stitching mechanism according to claim 1, characterized in that: The rotation axis of the suturing cam (100) and the rotation axis of the suturing concave wheel (200) are arranged in parallel; the concave structure is an annular suturing groove (220), and the suturing groove (220) corresponds to the suturing protrusion (110).

4. The metal plate stitching mechanism according to claim 2, characterized in that: A plurality of suturing recesses (210) are evenly arranged along the circumferential direction of the suturing cam (200), and a plurality of suturing protrusions (110) are evenly arranged along the circumferential direction of the suturing cam (100), and the arc length between two adjacent suturing protrusions (110) is equal to the arc length between two adjacent suturing recesses (210); The radii of the sewing concave wheel (200) and the sewing cam (100) are equal.

5. The metal plate stitching mechanism according to claim 3, characterized in that: In the moving direction of the metal plates to be stitched, the vertical axis of the stitching cam (200) is located behind the vertical axis of the stitching cam (100); and the distance between the vertical axis of the stitching cam (200) and the vertical axis of the stitching cam (100) is greater than the stitching gap (X).

6. A method for processing a metal plate stitching mechanism, characterized in that: Using a metal plate stitching mechanism according to any one of claims 1 to 5, the processing method includes: Step S1: Uncoiling and leveling: Uncoiling the metal sheet coil through the uncoiling device and leveling the coil using the leveling roller group; Step S2: Adapting and adjusting the suturing mechanism according to the target parameters of the suturing mechanism corresponding to the metal plates to be suturing; Step S3: The suturing mechanism continuously sews the metal plate; Step S4: Performing quality inspection on the stitched metal plates online; Step S5: According to production requirements, the qualified metal plates are rolled or cut to length.

7. The method for processing a metal plate stitching mechanism according to claim 6, characterized in that: A plurality of pressure sensors are provided in the pressure application area of ​​the stitching protrusion (110), the concave structure is divided into a plurality of pressure action areas, and the pressure action areas are numbered according to the pressure action sequence. The processing method further comprises: step S0: determining the target rotation speed of the stitching cam (100) corresponding to the current batch of metal plates to be stitched.

8. The method for processing a metal plate stitching mechanism according to claim 7, characterized in that: Step S0 includes: Step S01: Obtain the following reference conditions for the metal plates to be stitched of the same material and thickness corresponding to the current batch of metal plates to be stitched: the required pressure range of each pressure action area; the target allowable speed range of the stitching cam (100); the reference key stitching index vector corresponding to each first speed in the target speed allowable range; the reference range of the equivalent product of the action force and the action time corresponding to the pressure action area; the action force is applied by the effective pressure application area corresponding to the stitching protrusion (110); Step S02: constructing a first speed-key suturing indicator reference matrix based on the reference key suturing indicator vector corresponding to each first speed within the target speed allowable range, and marking a reference first ratio of each reference key suturing indicator at each first speed to the corresponding key suturing indicator at the median of the reference speed allowable range; Key suture indicators include: pressure effect coefficient of each pressure action area, pressure effect variation coefficient, and comprehensive inter-regional pressure coupling coefficient; Step S03: Based on the required pressure range of the pressure action area obtained in step S01, determine the actual required pressure range of each pressure action area of ​​the current batch of metal plates to be stitched, and the actual range of the equivalent product of the action force and the action time corresponding to the pressure action area; Step S04: performing a stitching test on the current batch of metal plates to be stitched based on the reference condition 1 and the median of the target allowable speed range corresponding to the current batch of metal plates to be stitched, and determining an actual key stitching index vector based on step S03; Step S05: determining the target rotational speed of the stitching cam (100) corresponding to the current batch of metal plates to be stitched based on the actual key stitching index vector and the first rotational speed-key stitching index reference matrix.

9. The method for processing a metal plate stitching mechanism according to claim 6, characterized in that: The metal plate sewing mechanism further comprises: an air cooling mechanism, the air cooling mechanism being used to cool the contact area between the sewing protrusion (110) and the metal plate; The control method of the air cooling mechanism in step S2 includes: Step S201: Obtain the current metal plate under the corresponding reference condition 2: Power source control parameter-reference suture strength fitting curve; The control parameters of the power source are the benchmark heating power fitting curve of the stitching area of ​​the current metal plate, and the temperature gradient coefficient and deformation coefficient of the metal plate are marked; Step S202: obtaining a temperature gradient-metal plate deformation fitting curve and marking the deformation-suture strength attenuation coefficient; Step S203: Obtain the required stitching strength range of the current metal plate, and determine the first stitching strength range based on the reliability factor of the control parameter of the power source, and screen the control parameter range of the power source corresponding to the first stitching strength range; when the actual control parameter of the power source is not within the control parameter range of the power source corresponding to the corresponding first stitching strength range, the first alarm will sound an alarm; the reliability factor of the control parameter of the power source is determined based on the corresponding temperature gradient coefficient and deformation coefficient.

10. The method for processing a metal plate stitching mechanism according to claim 9, characterized in that: Also includes: Step S204: when the first alarm does not sound an alarm, obtaining the surface temperature of the current metal plate before suturing, and obtaining the surface temperature of the suturing protrusion (110) to be suturing before suturing; Step S205: determining a corresponding deformation compensation factor based on the current actual control parameters of the power source; Step S206: Obtain the historical cooling efficiency of the stitching area of ​​the current metal plate within the most recent preset time period, and based on the deformation compensation factor obtained in step S205 and step S204, obtain the predicted cooling efficiency of the current actual control parameters of the power source in the stitching area of ​​the current metal plate; Step S207: determining a current thermal coupling coefficient based on a predicted cooling efficiency of a current actual control parameter of a power source in a current sutured area of ​​the metal plate, a current first temperature difference, and a temperature gradient coefficient corresponding to a current actual control parameter of the current power source; Step S208: determining the target heat dissipation power of the current air cooling mechanism based on steps S201 and S204 to S207; The current first temperature difference is: the surface temperature of the suture protrusion (110) to be sutured before sutured obtained in the current step S204 minus the surface temperature of the current metal plate before sutured obtained in the current step S203.

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