Sheet production line quick changeover system featuring standardized operation, zero waste and data quantification

Abstract

A sheet production line quick changeover system featuring standardized operation, zero waste and data quantification. The quick changeover system comprises: a machine base (1), which is arranged on the ground and comprises: a first reference surface (11), which is a machined horizontal surface on the machine base (1), and a second reference surface (12), which is arranged on a machined side surface of the machine base (1) and is perpendicular to the first reference surface (11); a side reference line (6), which is parallel to or coplanar with the second reference surface (12); a functional movement component (3), which is arranged on the first reference surface (11); a first detection surface (32), which is a side surface on the functional movement component (3) that can be used for measurement or a side surface of a sheet workpiece; and an operation guide board dimension, which is the clearance distance between the first reference surface (11) and the second reference surface (12). In view of a design drawing, by controlling the operation guide board dimension, quick changeover between production lines for sheets of different specifications can be realized, and the changeover is accurate.

Description

Standardized operation and zero-waste data-driven rapid switchover system for sheet metal production lines Technical Field

[0001] This invention relates to the field of sheet metal production line processing technology, and in particular to a standardized operation, zero-waste data quantification and rapid switching system for sheet metal production lines. Background Technology

[0002] In sheet metal production lines, sheet metal workpieces undergo physical and chemical changes and are transferred between multiple continuous workstations. The positional accuracy of the workpieces relative to the equipment during this shuttle process is crucial. Existing production lines on the market suffer from numerous product quality issues due to the difficulty in ensuring accurate sheet metal positioning. This is particularly true in continuous sandwich panel production lines, where workers lack standard operating instructions (SOPs) for specification changes, relying on experience for adjustments. Without unified benchmarks and standardized dimensional adjustments, adjustments are time-consuming, carry significant quality risks, and result in sheet metal misalignment. Defective products frequently occur after changes, and sometimes products exhibit irregular and unusual defects that are difficult to diagnose and accurately detect. Regardless of whether it's a European or Chinese production line, all sheet metal production lines in the industry lack quick and convenient measurement SOPs. Currently, production lines rely on a central busbar for positioning. However, since the central busbar is on the ground, the positions of functional components and the central busbar are difficult to determine and measure accurately, leading to a significant decrease in the production line's functionality, efficiency, and quality. The specific reasons are as follows.

[0003] Reason 1: Lack of a reference plane. Currently, in the industry, sheet metal production lines do not have a side reference for the material's forward direction during component processing. When arranging the production line, they rely on pulling a center line. Since the pulling line method cannot be quantified with inspection tools, it can only be judged by sight. Due to differences in lighting, angle, and individual observation positions, the results expressed by each person will be inaccurate. In addition, the line is flexible, and when a line of more than 100 meters is stretched taut, airflow will cause a lot of interference to the line. The line cannot be guaranteed to be completely straight and will sway. It will be affected by factors such as wind. Therefore, the busbar drawn using this method will not be accurate. The superposition of various factors will result in a deviation of plus or minus 1 mm, which is normal.

[0004] Reason 2: After the busbar is selected, each machine is based on the busbar. At this time, since there is only one line on the ground, the installation of all equipment can only be determined by plumb line to determine the installation position of the machine base. This cannot be done by measuring tools, but by human eyes. It is impossible to quantify the data, and the values ​​observed by each person after plumb line are different.

[0005] Reason 3: In actual production, the relative position of the workpiece plate and its measuring surface inside the machine cannot be detected. This makes it impossible to adjust the machine base and guides into place in one go. The plate needs to be moved into the machine and then the position of the plate and center line needs to be measured by using a plumb line. Since the center plumb line on the ground and the plate are far apart, the measurement value is inaccurate and very inconvenient. When a deviation occurs, the steel plate has already been pressed into the machine. At this time, it is impossible to correct it and the steel plate can only be cut off and started again.

[0006] Reason 4: When further automation is improved and servo positioning is adopted, there is no original reference, and only arbitrarily defined references can be used. This is detrimental to the management, maintenance and operation of the entire machine.

[0007] Currently, no production line manufacturer can calculate the position of each sheet type at each workstation when delivering the production line, nor do they have a very good measurement method. They can only rely on workers to figure it out during the debugging process, generally relying on experience. They first use the plumb line method to find the position of the sheet workpiece. When the sheet type is adjusted to this position and the product comes out without problems, the worker will record this position. Although a qualified product is produced at this position, it may not be correct. Under such circumstances, it is very easy for problems to occur when making the next sheet type or changing materials. These positional dimensions, which are figured out by the on-site workers and management, may not be accurate, and these positional dimensions are also difficult to quantify, manage and save, which brings great trouble to future production management. When problems occur, it is difficult to find the real cause of the problem, just like driving in an unfamiliar city without a navigation system.

[0008] When the production line is delivered, all positions need to be fixed after actual production. It is impossible to calculate all the position dimensions of the panels at once and convert them into adjustment data on the production line during installation and delivery. This greatly prolongs the debugging time of the entire line and results in a large number of defective products.

[0009] Currently, there are two solutions in the industry: 1. Based on the project schedule, materials for a project are prepared all at once to reduce changeover time. This requires building a large inventory, tying up capital and space, and masking quality risks. 2. Divide the supply into two or three production lines to reduce changeover time, with each line dedicated to different products. The serious problem with this is that it requires investing in an additional production line, bringing the total investment, including workshops, factories, and equipment, to 30 million RMB, resulting in high costs.

[0010] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0011] To address the shortcomings of existing technologies, this invention discloses a standardized operation and zero-waste data quantification rapid switching system for sheet metal production lines, in order to solve the problem of the inability to rapidly quantify and switch the specifications of functional moving parts of sheet metal production lines with zero waste.

[0012] The technical solution adopted in this invention is as follows:

[0013] The standardized operation and zero-waste data quantification rapid switching system for the sheet metal production line includes: a base, set on the ground, including: a first reference plane, which is the horizontal plane processed on the base; a second reference plane, set on the processed side of the base, perpendicular to the first reference plane; and a side busbar, which is a laser scanning line, a taut thin straight line pulled from two points, or a line irradiated by an autocollimator or theodolite.

[0014] A functional motion component is disposed on the first reference surface; the first detection surface is the side of the functional motion component that can be used for measurement or the side of the sheet metal workpiece; the work instruction signboard size is the opening distance between the first detection surface and the second reference surface.

[0015] A further technical solution is as follows: a detection boss is set on the extension section of the second reference surface, extending upward to a measurable position; the detection boss includes three forms: the first is that the side of the detection boss is attached to the second reference surface, extending upward to be flush with the first detection surface; the second is that the detection boss is a right-angle ruler, fixed on the first reference surface, and the side end face of the detection boss is coplanar with the second reference surface, while the detection boss extends upward to be flush with the first detection surface; the third is that the detection boss is integrally formed on the machine base, extending the second reference surface upward to be flush with the first detection surface; each machine base has a plate input port, and the functional moving component at the input port is a laterally adjustable feeding guide roller or guide rail, and a second reference surface is set on the side corresponding to the feeding guide roller or guide rail to ensure that the position of the plate can be locked before feeding, ensuring quick and accurate switching of various specifications and sizes.

[0016] The further technical solution is as follows: the center of the machine base is the central generatrix of the production line, used to calculate the position of each plate type in the production line; 1) Determination of the central generatrix: with the side generatrix as the reference, the second reference plane is aligned to be parallel to the side generatrix, with the second reference plane as the reference, the central generatrix is ​​drawn by extending from the lower end of the detection boss to the ground, and then by drawing the scribe line blocks; 2) Determination of the position of the workpiece: with the central generatrix as the reference, or with the side generatrix as the reference, or any line parallel to the central generatrix or the side generatrix as the reference, the relative position of the plate processing parts on the production line is planned; 3) Determination of the position of the functional moving parts: based on the position of each workpiece in the plate processing process, the functional moving parts involved in each process are calculated, with the central generatrix as the reference, or with the side generatrix as the reference, or any line parallel to the central generatrix or the side generatrix as the reference line; 4) After the workpiece position is determined, the work instruction board size is calculated.

[0017] A further technical solution is that the base is an integral base; or the base is a frame structure, the base includes a platform disposed inside the base and a functional moving component disposed on the upper part of the platform, a first frame is disposed on both sides of the functional moving component, the upper surface of the platform is machined into a first reference surface, and the side of the first frame is a first detection surface.

[0018] A further technical solution is that the top surface of the machine base is machined into a first reference surface. The functional moving parts include track plates that reciprocate in the vertical plane toward the X-axis. The track plates are composed of two sets arranged symmetrically, forming a semi-closed, continuously operable open cavity in the middle. The functional moving parts also include side modules that reciprocate in the horizontal plane on both sides of the cavity. The side modules and the upper and lower track plates form a continuously operating, four-sided closed cavity. During operation, the chemical materials in the cavity will generate tension when reacting. In order to fix and resist the side modules to overcome the tension, second guide rails are provided on both sides of the side modules. When changing specifications, the second guide rails move left and right to change the width of the cavity. When it is necessary to change specifications, according to the dimensions on the marked work instruction board, the opening distance between the inner side of the second guide rail and the second reference surface can be quickly adjusted to the specified value to ensure the position of the side modules and ensure that the finished product is flawless.

[0019] A further technical solution is that, when the second reference surface is on a base and the length of the base X-axis / Y-axis is ≥1, at least two second reference surfaces are respectively provided on both sides of the base. During laser detection, the second reference surfaces on the same side of each base need to be made coplanar by padding blocks.

[0020] A further technical solution is that, during laser inspection, when the length of the X-axis of the machine base is less than 1, two third reference surfaces are respectively set along the Y-axis direction on the left or right end surface of the machine base. In this state, a three-dimensional laser scanner is required to scan and detect the third reference surfaces using the other Y-axis of the laser, so as to ensure that the third reference surfaces are perpendicular to the X-axis of the central generatrix.

[0021] A further technical solution is that the system also includes a landmark ruler, which is made of two standard 1000mm steel rulers. With the central generatrix as the reference, the 0 mark of both landmark rulers is placed on the central generatrix and installed side by side.

[0022] A further technical solution is that the functional motion component includes a second frame disposed on a first reference plane, the second frame moving relative to the first reference plane along the Y-axis, and a positioning pin disposed on the upper plane of the second frame; the functional motion component also includes a third frame, the third frame being a roll assembly, the lower connecting surface being provided with a positioning hole, so that the third frame and the second frame are positioned by the positioning pin engaging the positioning hole, and the roll assembly of the third frame with different shapes can be replaced to produce various specifications of plates. Each time the plate type is changed, as long as the size of the work instruction board is adjusted, the adjustment is very precise, ensuring that the product quality is flawless every time the plate type is changed.

[0023] A further technical solution is that an overhead beam is provided on the upper part of the machine base, including its functional moving parts. An upper machine base and functional moving parts are provided on the overhead beam. The upper machine base is an overhead structure. The functional moving parts include an upper plate forming machine mounted on the upper machine base. The second reference surface on the upper machine base is coplanar with the second reference surface of the lower machine base through laser detection.

[0024] A further technical solution is that a first reference surface is provided on the base of the uncoiler, and the functional moving parts include a shaft assembly set on the upper part of the first reference surface. After the steel coil is moved onto the shaft assembly by the loading trolley, the shaft assembly automatically tensions and fixes the steel coil. The distance from the side of the steel coil to the second reference surface is the size of the work instruction board. The size of the work instruction board is quickly adjusted according to the design drawing to achieve the coil being loaded in place.

[0025] The beneficial effects of the embodiments of the present invention are as follows:

[0026] (I) The standardized operation and zero-waste data quantification rapid switching system for sheet metal production lines according to this invention includes a base, production line equipment, and detection bumps. It ensures complete consistency between the relative positions of all sheet types, functional moving parts, and landmark lines on the entire production line design drawing and the actual production line. The dimensions of the design drawing and the operation instruction board are also completely consistent. Production line operators only need to adjust the production line according to the calculation drawings provided by the equipment supplier and the operation instruction board to achieve a 100% product qualification rate. This invention has minimal reliance on operator skills; it is entirely a visual, standardized operation (foolproof operation), making it very simple and reliable. When defective products come out of the production line, by simply checking the dimensions of the operation instruction board at each workstation against the design drawings, it is possible to quickly determine whether the product quality problem is caused by the production line operator, the purchased raw materials, the production process, or the quality inspectors. This allows for very quick and accurate identification of the source of the problem and the responsible party. This significantly improves the sense of responsibility among employees in all departments of a company, because once defective products appear on the production line, the responsible party can be quickly and accurately identified, greatly improving management efficiency. During initial installation of the production line, a side busbar parallel to the X-axis is drawn from the side of the sheet metal production line. Using the design drawings, the Y-axis distance between the second reference plane and the side busbar is measured and adjusted to perfectly match the design drawings. This ensures the machine base and the side busbar are completely parallel, allowing for quick and precise production line installation. When switching production line specifications after installation, the Y-axis distance between the second reference plane and the first detection plane is measured. Using the design drawings, the position of the production line equipment on the Y-axis is quickly locked, enabling rapid switching to any specification of the sheet metal production line with precise and zero-waste switching.

[0027] (ii) Further, the detection boss is fixed on the second reference surface and protrudes from the second reference surface at both the top and bottom, with the lower end extending to the ground plane. One end of the measuring block rests against the detection boss, and the other end is used to draw the center line of the production line.

[0028] (III) Furthermore, two steel rulers ≥ 1000mm in diameter are used as the reference rulers. One ruler is installed on each side, aligned with the center generatrix. The biggest advantage of the reference rulers is that they allow for more convenient and faster verification of the workpiece's position and dimensions on the production line. This is because the reference rulers are calculated based on the center generatrix and extend outwards. In the workpiece's transverse cross-section drawing, the width dimension is generally marked in the total width direction. To facilitate the use of the reference rulers, when designing the workpiece's plate shape drawing, in addition to marking the total width dimension, dimensions are also marked on both the left and right sides, using the center generatrix as the reference. The readings on the left and right sides are marked with the center generatrix as the boundary. The plumb line at the edge of the workpiece and the dimension indicated by the reference ruler in the drawing are completely consistent. The reading when the tip of the plumb bob is close to the reference ruler at the edge of the workpiece is the dimension marked on both sides of the plate shape drawing. They correspond perfectly without any conversion, making it very intuitive and clear.

[0029] (iv) Furthermore, anchor bolts are installed at the four corners of the lower end of the machine base. By rotating the anchor bolts, the distance between the four corners of the lower end of the machine base and the ground can be adjusted, thereby adjusting the height and level of the first reference surface and ensuring the accuracy of subsequent measurements of the position of the board production line equipment. Attached Figure Description

[0030] Figure 1 is a schematic diagram of the elevation structure of the sheet metal production line of the present invention.

[0031] Figure 2 is a top view of the sheet metal production line of the present invention when using the laser wire drawing / straightening instrument wire drawing detection method.

[0032] Figure 3 is a top view of the sheet metal production line of the present invention when using the thin steel wire straight-line pulling detection method.

[0033] Figure 4 is a front view of the structure of the standardized operation, zero-waste data quantification and rapid switching system for the sheet metal production line of the present invention when the frame is a fixed whole.

[0034] Figure 5 is a front view of the feed rack structure in the X-axis direction of the standardized operation and zero-waste data quantification rapid switching system of the sheet metal production line of the present invention.

[0035] Figure 6 is a side view of the feed rack in the Y-axis direction of the standardized operation and zero-waste data quantification rapid switching system for the sheet metal production line of the present invention.

[0036] Figure 7 is a front view of the structure of the detection boss in the standardized operation and zero-waste data quantification rapid switching system of the plate production line of the present invention when the first type is detected.

[0037] Figure 8 is a front view of the structure of the detection boss in the standardized operation and zero-waste data quantification rapid switching system of the plate production line of the present invention when the boss is of the second type.

[0038] Figure 9 is a front view structural diagram of the detection boss in the standardized operation and zero-waste data quantification rapid switching system of the sheet metal production line of the present invention when the boss is of the third type.

[0039] Figure 10 is a front view of the rock wool milling machine in the standardized operation and zero-waste data quantification rapid switching system of the board production line of the present invention.

[0040] Figure 11 is a side view of the rock wool milling machine in the standardized operation and zero-waste data quantification rapid switching system for the board production line of the present invention.

[0041] Figure 12 is a top view of the rock wool milling machine in the standardized operation and zero-waste data quantification rapid switching system for the board production line of the present invention.

[0042] Figure 13 is a front view schematic diagram of the rock wool milling machine adjusting the positioning roller state in the standardized operation, zero-waste data quantification and rapid switching system of the plate production line of the present invention.

[0043] Figure 14 is a front view of the rock wool milling machine adjusting the milling cutter state in the standardized operation, zero-waste data quantification and rapid switching system of the plate production line of the present invention.

[0044] Figure 15 is a front view of the tracked machine in the standardized operation, zero-waste data quantification and rapid switching system for the sheet metal production line of the present invention.

[0045] Figure 16 is a front view of the structure of the third frame being lifted and separated in the standardized operation, zero-waste data quantification and rapid switching system of the plate production line of the present invention.

[0046] Figure 17 is a front view of the structure of the third frame during docking in the standardized operation and zero-waste data quantification rapid switching system of the sheet metal production line of the present invention.

[0047] Figure 18 is a front view of the structure of the third frame being lifted and separated in the standardized operation, zero-waste data quantification and rapid switching system of the plate production line of the present invention.

[0048] Figure 19 is a front view of the structure of the third frame during docking in the standardized operation and zero-waste data quantification rapid switching system of the sheet metal production line of the present invention.

[0049] Figure 20 is a front view of the structure of the base in the standardized operation, zero-waste data quantification and rapid switching system of the sheet metal production line of the present invention when the base has two layers.

[0050] Figure 21 is a cross-sectional view of Figure 20 at point A, using the oscillation method for detection.

[0051] Figure 22 is a cross-sectional view of Figure 20 at point B, using the oscillation method for detection.

[0052] Figure 23 is a cross-sectional view of Figure 20 at point A, using the laser method for detection.

[0053] Figure 24 is a cross-sectional view of Figure 20 at point B, using the laser method for detection.

[0054] Figure 25 is a front view structural diagram of the standardized operation, zero-waste data quantification and rapid switching system for the sheet metal production line of the present invention when the base has two layers.

[0055] Figure 26 is a front view of the structure of the uncoiling machine when unloading the cold storage in the standardized operation, zero-waste data quantification and rapid switching system of the plate production line of the present invention.

[0056] Figure 27 is a front view of the structure of the band saw cutting corrugated board in the standardized operation, zero-waste data quantification and rapid switching system of the board production line of the present invention.

[0057] Figure 28 is a front view of the structure of the band saw cutting the cold storage lower plate in the standardized operation, zero-waste data quantification and rapid switching system of the plate production line of the present invention.

[0058] In the picture:

[0059] 1. Base; 101. Platform; 102. Anchor bolts; 11. First reference surface; 12. Second reference surface; 13. Shim; 14. Laser target; 15. Third reference surface; 2. Detection boss; 21. Pad; 3. Functional moving parts; 30. First frame; 31. Second frame; 32. First detection surface; 33. Third frame; 34. Overhead crossbeam; 35. Track plate; 36. Side module; 37. Shaft assembly; 301. First guide rail; 302. Second guide rail; 4. Landmark ruler; 5. Center generatrix; 6. Side generatrix. Detailed Implementation

[0060] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0061] To make the objectives, technical solutions, and advantages of this invention clearer, the device proposed by this invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, only for the purpose of conveniently and clearly illustrating the embodiments of this invention. Please refer to the accompanying drawings to make the objectives, features, and advantages of this invention more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives achieved by this invention, should still fall within the scope of the technical content disclosed in this invention.

[0062] First embodiment:

[0063] As shown in Figure 4, this embodiment discloses a standardized operation and zero-waste data quantification rapid switching system for a sheet metal production line, including a base 1, a side busbar 6, functional moving parts 3, and work instruction board dimensions.

[0064] In this embodiment, the production line is a sheet metal cold-formed steel and sandwich panel production line. Those skilled in the art will understand that the technical solutions disclosed in this invention can also be applied to other types of production lines that require cutting, bending, punching, stretching, and composite processing of sheet metal, such as coil leveling, slitting, and cross-cutting production lines, discontinuous and continuous sandwich panel production lines, electrical box housings, refrigerators, sheet metal housing production lines, etc.

[0065] The machine base 1 is set on the ground and includes a first reference surface 11 and a second reference surface 12. The first reference surface 11 is a machined horizontal surface on the machine base 1. The second reference surface 12 is set on a machined side surface of the machine base 1 and is perpendicular to the first reference surface 11. The side generatrix 6 is parallel to or coplanar with the second reference surface 12. The side generatrix 6 is a laser scanning line, a taut thin straight line drawn from two points, or a line illuminated by an autocollimator or theodolite. The functional motion component 3 is set on the first reference surface 11, and the first detection surface 32 is the side surface of the functional motion component 3 that can be used for measurement or the side surface of a sheet metal workpiece. The size of the work instruction signboard is the opening distance between the first detection surface 32 and the second reference surface 12.

[0066] As shown in Figures 1, 2, and 3, the machine base 1 comprises several units arranged along the X-axis, which is the forward direction of the production line. Specifically, it includes, in sequence, an uncoiler, a film-coating conveyor, a rib-pressing machine, a forming machine, a rock wool production line, a conveyor roller conveyor, a crawler conveyor, and a band saw. After the initial installation of the machine base 1, the present invention uses a 360° laser scan or a steel wire pulling method for fine-tuning to ensure that the second reference surface 12 on this frame is coplanar with the second reference surface 12 of other equipment.

[0067] Furthermore, anchor bolts 102 are installed at the four corners of the lower end of the base 1. By rotating the anchor bolts 102, the distance between the four corners of the lower end of the base 1 and the ground can be adjusted to adjust the height and level of the first reference plane 11, ensuring the accuracy of subsequent measurement of the position of the board production line equipment.

[0068] As shown in Figures 5 and 6, each base 1 further includes a plate input port. The functional moving part 3 at the input port is a movable feeding guide. A second reference surface 12 is set on the side corresponding to the feeding guide to ensure that the position of the plate can be locked before feeding, thus ensuring quick switching between various specifications.

[0069] Second embodiment:

[0070] As shown in Figures 7, 8, and 9, the detection boss 2 is disposed on the extension of the second reference surface 12, extending upward to a measurable position. The detection boss 2 includes the following three forms.

[0071] As shown in Figure 7, the first type is that the side of the detection boss 2 is attached to the second reference surface 12 and extends upward to be flush with the first detection surface 32.

[0072] As shown in Figure 8, the second type is that the detection boss 2 is a right-angle ruler, fixed on the first reference surface 11, and the side end face of the detection boss 2 is coplanar with the second reference surface 12. At the same time, the detection boss 2 extends upward to be flush with the first detection surface 32.

[0073] As shown in Figure 9, the third type is that the base 1 has an integrally formed detection boss 2, which extends the second reference surface 12 upward to be flush with the first detection surface 32.

[0074] Third embodiment:

[0075] The center of the base 1 is the central busbar 5 of the production line, which is used to calculate the position of each plate type in the production line.

[0076] 1) Determination of the center busbar 5: Using the side busbar 6 as the reference, calibrate the second reference plane 12 to be parallel to the side busbar 6. Using the second reference plane 12 as the reference, extend the detection boss 2 to the ground, and then draw the center busbar 5 using scribing blocks.

[0077] 2) Determining the position of the workpiece: Using the central generatrix 5 as a reference, or the side generatrix 6 as a reference, or any line parallel to the central generatrix 5 or the side generatrix 6 as a reference, plan the relative position of the sheet metal workpiece on the production line.

[0078] 3) Determining the position of the functional moving parts 3: Based on the position of each workpiece during the sheet metal processing, calculate the relative position of the functional moving parts 3 involved in each process, with the central generatrix 5 as the reference, the side generatrix 6 as the reference, or any line parallel to the central generatrix 5 or the side generatrix 6 as the reference line.

[0079] 4) After the workpiece position is determined, the dimensions of the work instruction board are calculated.

[0080] When switching production line specifications, simply use any one of the following: steel tape measure, depth vernier caliper, special measuring bar, and measuring block to measure the open-axis distance between the second reference surface 12 and the first detection surface 32, and adjust this distance to be the same as the size of the work instruction board.

[0081] Fourth embodiment:

[0082] As shown in Figure 4, the base 1 is an integral base, corresponding to the forming machine in the production line.

[0083] Adjustment of the moving part 3 of the forming machine:

[0084] The functional moving part 3 moves along the first guide rail 301, which is perpendicular to the central generatrix 5, via a power transmission lead screw and nut. During operation, it is adjusted to the correct dimension according to the theoretical calculations on the work instruction board. In the diagram, the distance from the second reference surface 12 to the first detection surface 32 corresponds to the work instruction board dimension of 88.3 mm. After adjusting to this dimension, locking the bolt completes the adjustment. During operation, the work instruction board dimensions can be checked at any time using a steel ruler or depth caliper to verify dimensional changes and ensure product quality stability.

[0085] As shown in Figures 10-12, the base 1 may be a frame structure, corresponding to the rock wool milling machine before bonding and curing in the production line. The base 1 includes a platform 101 disposed inside the base 1 and a functional motion component 3 disposed on the upper end of the platform 101. A first frame 30 is disposed on both sides of the functional motion component 3. The upper surface of the platform 101 is machined into a first reference surface 11, and the side of the first frame 30 is a first detection surface 32.

[0086] Milling cutter adjustment:

[0087] The milling cutter's functional moving part 3 is driven by a screw jack and moves horizontally left and right on the first guide rail 301, which is perpendicular to the central generatrix 5. During operation, it can be adjusted to the correct position according to the theoretically calculated dimensions on the work instruction board. The distance from the second reference surface 12 to the first inspection surface 32 corresponds to the work instruction board dimension of 458.7mm. After adjusting to this dimension using the handwheel, the handwheel is locked, and the adjustment is complete. During operation, the dimensions on the work instruction board can be checked at any time using a steel ruler or depth caliper to verify whether the dimensions have changed and to ensure the stability of product quality.

[0088] Due to the unique dimensions of the rock wool milling components, during laser inspection, when the second reference surface 12 is on a base 1 and the ratio of the X-axis length to the Y-axis length of the base 1 is ≥ 1, at least two second reference surfaces 12 are respectively set on both sides of the base 1.

[0089] During laser inspection, when the length of the X-axis of the base 1 is less than 1, two third reference surfaces 15 are set on the front or rear surface of the base 1 along the Y-axis. In this state, a three-dimensional laser scanner is required to scan and detect the third reference surfaces 15 using the other Y-axis of the laser to ensure that the third reference surfaces 15 are perpendicular to the X-axis of the central generatrix 5.

[0090] Fifth embodiment:

[0091] Milling sandwich panels is a very difficult piece of equipment. The difficulty lies in the fact that defective products are generated when switching specifications. The problems are as follows: First, if there is a large allowance, there is a lot of material waste and the dust removal power consumption is huge; second, the milling accuracy of the sides must be controlled within 0.2 mm; third, various specifications require a fast-moving milling cutter assembly to achieve rapid switching.

[0092] Take the milling of cold storage panels as an example.

[0093] After the initial installation of the base 1, the present invention makes fine adjustments by means of laser 360° scanning or pulling steel wire to ensure that the second reference surface 12 on this frame is coplanar with the second reference surface 12 of other equipment.

[0094] As shown in Figure 13, the positioning roller adjustment: The side guide roller is used to position the plate. It can move along the vertical center generatrix 5 on the first reference surface 11 of the frame via a handwheel. The outer side of the guide roller is set as the first detection surface 32. Calculations show that the distance from the second reference surface 12 to the first detection surface 32 is 430mm, which corresponds to the work instruction board dimension. After adjusting to this dimension using the handwheel, the handwheel is locked, completing the adjustment. During operation, the work instruction board dimension can be checked at any time using a steel ruler or depth caliper to verify whether the dimension has changed and to ensure the stability of product quality.

[0095] As shown in Figure 14, the milling cutter is adjusted as follows: The milling cutter assembly is mounted on the housing, i.e., the functional motion component 3. It can mill the sheet metal on the first reference surface 11, along the direction perpendicular to the central generatrix 5, by being pulled by a cylinder. The outermost surface of the basic milling cutter's outer diameter is designated as the first detection surface 32. The depth of cut can be changed by adjusting the movement of the two adjusting rollers on the housing. Calculations show that the distance from the second reference surface 12 to the first detection surface 32 corresponds to a work instruction board dimension of 430mm. After the first adjustment, the cylinder will automatically advance and retract the cutter during the next feed.

[0096] Sixth embodiment:

[0097] As shown in Figure 15, the top surface of the base 1 is machined into the first reference surface 11. The functional motion component 3 includes a set of track plates 35 that reciprocate in the vertical plane toward the X-axis. The track plates 35 are composed of two sets arranged symmetrically on the top and bottom, forming a semi-closed loop movable open cavity that can operate continuously. The functional motion component 3 also includes side modules 36 that reciprocate in the horizontal plane on both sides of the cavity. The side modules 36 and the upper and lower track plates 35 form a continuously operating closed cavity. During molding and curing, the chemical material in the cavity has tension. In order to fix and resist the side modules 36 with tension, the side modules 36 are provided with second guide rails 302 on both sides. When changing specifications, the second guide rails 302 move left and right to change the width of the cavity. When it is necessary to change specifications, according to the dimensions of the marked work instruction board, the opening distance between the inner side of the second guide rail 302 and the second reference surface 12 can be quickly adjusted to the specified value to ensure the position of the side module 36 and ensure that the finished product is flawless.

[0098] Seventh embodiment:

[0099] As shown in Figure 4, the system also includes a landmark ruler 4. The landmark ruler 4 uses two standard 1000mm steel rulers, with the central generatrix 5 as the reference. The 0 mark of the two landmark rulers 4 is placed on the central generatrix 5, and they are installed side by side.

[0100] Eighth embodiment:

[0101] As shown in Figures 16 and 17, the functional motion component 3 includes a second frame 31 disposed on the first reference surface 11. The second frame 31 moves relative to the first reference surface 11 along the Y-axis, and a positioning pin is provided on the upper plane of the second frame 31.

[0102] The functional moving part 3 also includes a third frame 33, which is a roll assembly. The lower end connecting surface is provided with positioning holes, so that the third frame 33 and the second frame 31 are positioned by positioning pins engaging the positioning holes. The roll assembly of the third frame 33 with different shapes can be replaced to produce various specifications of plates. Each time the plate type is changed, as long as the size of the work instruction board is adjusted, the adjustment is very precise, ensuring that the product quality is flawless every time the plate type is changed.

[0103] As shown in Figures 18 and 19, specifically, the third frame 33 is the forming roller mold assembly box. Its lower end and the upper end of the second frame 31 have concentric positioning holes, housing matching male and female positioning pins. This ensures direct and rapid positioning when switching the forming roller mold assembly box. Through the movement of the second frame 31, it can move along the vertical center generatrix 5 on the first reference surface 11 of the frame. The outer surface of the mold assembly box is set as the first inspection surface 32. Calculations show that the distance from the first inspection surface 32 of the left mold assembly box to the second reference surface 12 is 90.2 mm. Adjusting to this size completes the process. During operation, the dimensions of the work instruction board can be checked at any time using a steel ruler or depth caliper to verify whether the dimensions have changed and to ensure the stability of product quality.

[0104] Ninth embodiment:

[0105] When producing composite panels, some areas require the installation of two layers of equipment that are suspended above each other. In this case, the two layers of equipment need to have the same positional accuracy to ensure product quality. Otherwise, misalignment of the upper and lower panels will occur, causing serious quality problems. Therefore, the installation position of the upper and lower layers of equipment needs to meet a very high precision requirement.

[0106] As shown in Figures 20 to 24, an overhead beam 34 is provided on the upper part of the base 1, including its functional moving parts 3. An upper base 1 and functional moving parts 3 are provided on the overhead beam 34. The upper base 1 is an overhead structure. The functional moving parts 3 include an upper plate forming machine mounted on the upper base 1. The second reference surface 12 on the upper base 1 is coplanar with the second reference surface 12 of the lower base 1 through laser detection.

[0107] There are several methods for adjusting the position of this type of equipment.

[0108] Wire swing test:

[0109] As shown in Figures 21 and 22, the side busbar 6 is defined by stretching a taut, 2mm diameter thin steel wire between two points: the second reference surface 12 of the front base 1 in the entire production line arrangement and the outermost second reference surface 12 of the last base 1. To eliminate errors during initial adjustment, after tightening the side busbar 6 at both ends using a tensioner, a 1mm thick iron sheet is placed at each of the first and last second reference surfaces 12. The steel wire is then pressed against the shims 13 placed on the second reference surfaces 12, thus creating a 1mm gap between the second reference surface 12 and the side busbar 6. The gap is designed to prevent the side busbar 6 from touching the middle second reference surface 12 and affecting the straightness of the steel wire. At the same time, there is a 1mm gap between the side busbar 6 and the middle second reference surface 12. The gap can be checked with a 1mm measuring gauge. This method allows a gap of 0.05mm to be seen with the naked eye. This means that on a 200m long production line, the parallelism of the second reference surface 12 of all machine bases 1 can be controlled to 0.05mm by pulling the wire. Its accuracy has exceeded that of lasers because most lasers on the market cannot reach a detection length of 200m.

[0110] After the second reference surface 12 of the lower frame 1 is aligned to be coplanar, the upper frame 1 uses the oscillation method to ensure parallelism and coaxiality with the lower frame 1. During oscillation, the line is oscillated on the second reference surface 12 of the upper frame 1. The second reference surfaces 12 of the upper and lower frame 1 are required to be in the same position so that the positional dimensions of the second reference surface 12 and the line can be measured. The detection method is to place a 1mm shim 13 on the second reference surface 12 of the upper frame 1, and let the line hang down. The oscillation line and the second reference surface 12 of the lower frame should maintain the same distance of 1mm. The detection points should be at least two points at both ends.

[0111] Laser detection method:

[0112] As shown in Figures 23 and 24, it is first necessary to ensure that the second reference plane 12 of the lower base 1 is in a coplanar detection state, and then adjust the position of the lower equipment. Place the laser detector in a fixed position. If there is a need to detect the Y-axis on the production line, the laser emitter is generally placed at the intersection of the Y-axis side generatrix 6 and the X-axis target, that is, the position of the three-dimensional laser detector on the third reference plane 15 in Figure 2. Then, place the laser targets 14 on different second reference planes 12 of the lower equipment base 1 respectively. Adjust the position of the base 1 and read the value of the laser target 14. If it meets the design requirements, it means that the second reference plane 12 is coplanar. The laser detection head generally does not need to be moved and is placed in place. Use the same method to adjust the second reference plane 12 of the upper base 1 to be coplanar with the second reference plane 12 of the lower base 1. If the laser scanning line of the upper base 1 is blocked by the support, the laser can move to avoid the support column for detection.

[0113] Tenth embodiment:

[0114] As shown in Figures 25 and 26, the uncoiler in a sandwich panel production line is taken as an example. An uncoiler is a mechanical device that automatically unwinds coiled metal sheets, and is widely used in sheet metal processing, packaging, and transportation. During loading, the steel coil may be misaligned, resulting in defective products.

[0115] The base 1 of the uncoiler is provided with a first reference surface 11. The functional moving parts 3 include a shaft assembly 37 located on the upper end of the first reference surface 11. After the steel coil is moved onto the shaft assembly 37 by the loading trolley, the shaft assembly 37 automatically tensions and fixes the steel coil. The distance from the side of the steel coil to the second reference surface 12 is the size of the work instruction board. The size of the work instruction board can be quickly adjusted according to the design drawing to achieve the coil loading in place.

[0116] As shown in Figure 25, when loading cold storage steel coils:

[0117] The first step is to guide the steel coil onto the main shaft using a traction device, then tighten the main shaft and reset the auxiliary support.

[0118] The second step involves activating the Y-axis moving cylinder according to the dimensions in the design drawings. Adjusting the size to 494.6mm according to the work instruction board, the installation of the cold storage steel coil is completed, and the steel coil feeding is very precise and convenient.

[0119] As shown in Figure 26, when feeding corrugated steel coils:

[0120] The first step is to guide the steel coil onto the main shaft using a traction device, then tighten the main shaft and reset the auxiliary support.

[0121] The second step involves activating the Y-axis moving cylinder according to the dimensions in the design drawings. Adjust the size to 496mm according to the work instruction board. The installation of the corrugated steel coil is then complete, and the positioning of the steel coil is very convenient.

[0122] The second reference surface 12 on the same side of each base 1 needs to be coplanar. When the Y-axis dimension of the base 1 is insufficient, it is made coplanar by using a pad 21.

[0123] Eleventh Example:

[0124] As shown in Figures 27 and 28, take the band saw in the sandwich panel production line as an example.

[0125] Band saw cutting production process: It is difficult to measure the original reference position of the band saw blade and the position of the workpiece plate because the bottom module, bottom module support plate, band saw base, etc., cover the center generatrix 5. Since the reference cannot be found, it is impossible to plan the optimal cutting scheme for irregular plate shapes. When the production speed is 5000mm / min, there is no optimal cutting path, and the band saw blade cutting path is very different from the optimal cutting path. When the production line speed is 5m, assuming the shortest plate length is L1, the cutting cycle is T1 = L1 / 5000*60S. The functional motion component 3 can move left and right on the Y axis at a speed of 100mm / s to cut a plate with a stroke of 1271mm, which takes 1271 / 100 = 12.71s. The functional motion component 3 can track and move on the X axis at a rapid traverse speed of 280mm / s, and the return time is t1 = L1 / 280. The total working time is 12.71s + t1. Based on the working principle T1 = 312.84s + t2, which is L1 / 5000 * 60 / (312.71s + L1 / 280), L1 is approximately 1500mm. In summary, when the production speed is 5 meters per second, the shortest board length to be cut is 1500mm, and the cycle time for one cut is approximately 18 seconds.

[0126] In this invention, one side of the base 1 is set as the second reference surface 12. When the entire line is initially installed, the second reference surface 12 is coplanar with all the subsequent second reference surfaces 12 through the side bus 6. Because the second reference surface 12 of the saw blade is fixed, while the functional moving parts 3 on the base 1 can move left and right on the Y-axis.

[0127] As shown in Figure 27, taking the production of corrugated boards as an example, the zero point position of the saw blade is determined according to the dimensions of the board being processed, using the dimensions on the work instruction board. The saw blade starts working from the zero point, which is 121679mm from the second reference plane, i.e., 627mm on the right side of the steel ruler. It then advances rapidly at a speed of 180mm / s for 0.53s, covering 95mm, quickly approaching the board being cut, with the right side of the steel ruler reading at 532mm. Afterwards, it advances slowly at a speed of 75mm / s for 1.2s, covering 91mm, cutting into the board, with the right side of the steel ruler reading at 532mm. The first cutter travels 441mm, then feeds at 120mm / s for 8.1s, covering 968mm. The left steel ruler reads 526mm. It then feeds slowly at 75mm / s for 0.4s, covering 30mm to cut out the board. The left steel ruler reads 557mm. It then feeds rapidly at 180mm / s for 0.48s, covering 87mm to quickly move to the stop position. The left steel ruler reads 644mm. The total travel from zero to the stop position is 1271mm, taking approximately 10.69s.

[0128] When the production line speed is 5m / s, assuming the shortest board length is L2, the cutting cycle time is T2 = L2 / 5000 * 60s. The functional motion component 3 can track and move along the X-axis at a rapid traverse speed of 280mm / s, with a return time t2 = L2 / 280. The total working time is 10.69 + t2. Based on the working principle, T2 = 310.69s + t2, which is equivalent to L2 / 5000 * 60s = 310.69s + L2 / 280, thus L2 is approximately 1261mm. In summary, when the production line is 5 meters long, i.e., the shortest board length is 1261mm, the cutting cycle time is approximately 15.1s.

[0129] As shown in Figure 28, taking the production of cold storage panels as an example, the zero point position of the saw blade is determined according to the panel size and the dimensions on the work instruction board. The saw blade starts working from the zero point, which is 121679mm away from the second reference plane, i.e., 627mm on the right side of the steel ruler. It then advances rapidly at a speed of 180mm / s for 0.32s, covering 59mm, quickly approaching the panel to be cut. The right side of the steel ruler reads 568mm. After that, it advances slowly at a speed of 75mm / s for 0.48s, covering 36mm, cutting into the panel. The right steel ruler reading is 532mm. The cutting process then proceeds at a speed of 120mm / s, advancing 1083mm in 9 seconds. The left steel ruler reading is 551mm. The cutting process then proceeds at a slow speed of 75mm / s for 0.42s, advancing 32mm to cut out the material. The left steel ruler reading is 583mm. The cutting process then proceeds at a fast speed of 180mm / s for 0.34s, advancing 110mm to the stop position. The left steel ruler reading is 644mm. The total travel from zero to the stop position is 1271mm, taking approximately 10.6s. When the production line speed is 5m / s, assuming the shortest board length is L3, the cutting cycle is T3 = L3 / 5000 * 60s. The functional motion component 3 can track the movement on the X-axis at a fast traverse speed of 280mm / s. The return time is t3 = L2 / 280, and the total working time is 10.6s + t3. Based on the working principle T3 = 10.6s + t3, which is L3 / 5000 * 60 / (310.6s + L3 / 280), L3 is approximately 1261mm. Therefore, the shortest production board length is 1261mm, and the cutting cycle time is approximately 15 seconds.

[0130] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0131] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A standardized operation and zero-waste data-driven rapid switchover system for sheet metal production lines, characterized by: include: The base (1), set on the ground, includes: The first reference surface (11) is the horizontal surface that has been machined on the base (1); The second reference surface (12) is disposed on the machined side of the base (1) and is perpendicular to the first reference surface (11); Side busbar (6), the side busbar (6) is parallel or coplanar with the second reference plane (12), the side busbar (6) is a laser scanning line or a taut thin straight line pulled from two points, or a line irradiated by an autocollimator or theodolite; A functional moving part (3) is disposed on the first reference surface (11); The first detection surface (32) is the side surface of the functional moving part (3) that can be used for measurement or the side surface of the sheet metal workpiece; The size of the work instruction signboard is the opening distance between the first detection surface (32) and the second reference surface (12).

2. The standardized operation and zero-waste data quantification rapid switching system for sheet metal production lines according to claim 1, characterized in that: A detection boss (2) is provided on the extension of the second reference surface (12) and extends upward to a measurable position; the detection boss (2) includes three forms: The first type is that the side of the detection boss (2) is attached to the second reference surface (12) and extends upward to be flush with the first detection surface (32); The second type is that the detection boss (2) is a right angle ruler, fixed on the first reference surface (11), and the side end face of the detection boss (2) is coplanar with the second reference surface (12), while the detection boss (2) extends upward to be flush with the first detection surface (32); The third type is that the base (1) is integrally formed with a detection boss (2), and the second reference surface (12) is extended upward to be flush with the first detection surface (32); Each base (1) has a plate input port. The functional moving part (3) at the input port is a movable feeding guide. A second reference surface (12) is set on the side corresponding to the feeding guide to ensure that the plate position can be locked before feeding and to ensure quick switching of various specifications.

3. The standardized operation and zero-waste data quantification rapid switching system for sheet metal production lines according to claim 2, characterized in that: The center of the base (1) is the center busbar (5) of the production line, which is used to calculate the position of each plate type in the production line; 1) Determination of the central busbar (5): Taking the side busbar (6) as the reference, the second reference plane (12) is aligned to be parallel to the side busbar (6). Taking the second reference plane (12) as the reference, the central busbar (5) is drawn by extending from the lower end of the detection boss (2) to the ground and then by drawing the line block. 2) Determining the position of the workpiece: Using the central generatrix (5) as a reference, or the side generatrix (6) as a reference, or any line parallel to the central generatrix (5) or the side generatrix (6) as a reference, plan the relative position of the sheet metal processing part on the production line; 3) Determining the position of the functional moving parts (3): Based on the position of each workpiece during the plate processing, calculate the relative position of the functional moving parts (3) involved in each process with the central generatrix (5) as the reference, or with the side generatrix (6) as the reference, or with any line parallel to the central generatrix (5) or the side generatrix (6) as the reference line; 4) After the workpiece position is determined, the dimensions of the work instruction board are calculated.

4. The standardized operation and zero-waste data quantification rapid switching system for sheet metal production lines according to claim 3, characterized in that: The base (1) is an integral base; Alternatively, the base (1) may be a frame structure, the base (1) may include a platform (101) disposed inside the base (1) and a functional motion component (3) disposed on the upper end of the platform (101), the functional motion component (3) may have a first frame (30) disposed on both sides, the upper surface of the platform (101) may be machined into a first reference surface (11), and the side of the first frame (30) may be a first detection surface (32).

5. The standardized operation and zero-waste data quantification rapid switching system for sheet metal production lines according to claim 4, characterized in that: The base (1) has its top surface machined into a first reference surface (11). The functional motion component (3) includes a set of track plates (35) that reciprocate in the vertical plane toward the X-axis. The track plates (35) are composed of two sets arranged symmetrically on the top and bottom, forming a semi-closed, continuously operable open cavity in the middle. The functional motion component (3) also includes side modules (36) that reciprocate in the horizontal plane on both sides of the cavity. The side modules (36) on both sides and the upper and lower track plates (35) form a continuously operating, enclosed structure. During the molding and curing process, the chemical material inside the cavity has a tensile force. In order to fix and hold the side module (36) in place, the side module (36) is provided with a second guide rail (302) on both sides. When switching specifications, the second guide rail (302) moves left and right, which can change the width of the cavity. When it is necessary to change the specifications, according to the size of the marked work instruction board, the opening distance between the inner side of the second guide rail (302) and the second reference surface (12) can be quickly adjusted to the specified value to ensure the position of the side module (36) and ensure that the finished product is flawless.

6. The standardized operation and zero-waste data quantification rapid switching system for sheet metal production lines according to claim 1, characterized in that: When the second reference surface (12) is on a base (1) and the length of the X-axis / Y-axis of the base (1) is ≥1, at least two second reference surfaces (12) are respectively provided on both sides of the base (1). During laser detection, the second reference surface (12) on the same side of each base (1) needs to be shimmed to be coplanar by pads (21). During laser inspection, when the length of the X-axis of the base (1) is less than 1, two third reference surfaces (15) are set on the left or right end surface of the base (1) along the Y-axis. In this state, a three-dimensional laser scanner is required to scan and detect the third reference surface (15) along the other Y-axis of the laser to ensure that the third reference surface (15) is perpendicular to the X-axis of the central generatrix (5).

7. The standardized operation and zero-waste data quantification rapid switching system for sheet metal production lines according to claim 3, characterized in that: The system also includes a landmark ruler (4), which is made of two standard 1000mm steel rulers. The 0 mark of the two landmark rulers (4) is placed on the central generatrix (5) with the central generatrix (5) as the reference. They are installed with the left and right sides facing each other.

8. The standardized operation and zero-waste data quantification rapid switching system for sheet metal production lines according to claim 4, characterized in that: The functional motion component (3) includes a second frame (31) disposed on the first reference surface (11), the second frame (31) moves along the Y-axis relative to the first reference surface (11), and a positioning pin is provided on the upper plane of the second frame (31); The functional moving part (3) also includes a third frame (33), which is a roll assembly. The lower end connecting surface is provided with a positioning hole, so that the third frame (33) and the second frame (31) are positioned by the positioning pin being engaged in the positioning hole. The roll assembly of the third frame (33) with different shapes can be replaced to produce various specifications of plates. Each time the plate type is changed, as long as the size of the work instruction board is adjusted, the adjustment is very precise, ensuring that the product quality is perfect every time the plate type is changed.

9. The standardized operation and zero-waste data quantification rapid switching system for sheet metal production lines according to claim 4, characterized in that: An overhead beam (34) is provided on the upper part of the base (1) including its functional moving parts (3). An upper base (1) and functional moving parts (3) are provided on the overhead beam (34). The upper base (1) is an overhead structure. The functional moving parts (3) include an upper plate forming machine mounted on the upper base (1). The second reference surface (12) on the upper base (1) is coplanar with the second reference surface (12) of the lower base (1) by laser detection.

10. The standardized operation and zero-waste data quantification rapid switching system for sheet metal production lines according to claim 4, characterized in that: The base (1) of the uncoiler is provided with a first reference surface (11). The functional motion component (3) includes a shaft assembly (37) located on the upper end of the first reference surface (11). After the steel coil is moved onto the shaft assembly (37) by the loading trolley, the shaft assembly (37) automatically tightens and fixes the steel coil. The distance from the first detection surface (32) on the side of the steel coil to the second reference surface (12) is the size of the work instruction board. The size of the work instruction board is quickly adjusted according to the design drawing to achieve the coil in place.

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