A method for cutting irregular profiles

Abstract

This invention relates to the field of profile processing technology, specifically disclosing a method for cutting profiles. The method includes the following steps: determining the lengths of each side of the profile's cross-section; summing the lengths of all parallel sides to obtain the total length, defining them sequentially as a first group and a second group according to their total length; randomly selecting one side from the first group as the first side, and randomly selecting one side from the second group as the second side; determining the angle between the first and second sides as α; passing the profile through the fixed blade's fixed edge and the moving blade's moving edge; setting the first side parallel to the horizontal plane, and moving the moving blade relative to the fixed blade along a first direction to complete the cutting of the profile, wherein the angle between the first direction and the horizontal plane is half α. This method avoids deformation of the first and second sides, prevents burrs caused by deformation, avoids secondary shaping, saves costs, and helps ensure the strength and other properties of the profile.

Description

Technical Field

[0001] This invention relates to the field of profile processing technology, and in particular to a method for cutting profiles. Background Technology

[0002] Shelving is an important tool for improving efficiency in modern warehouses. To enhance the support capacity of shelving, it is generally made of special-shaped materials. The cross-section of special-shaped materials is not square or circular, but is composed of multiple sides with different angles. Common special-shaped materials include Sigma beams and double C-shaped beams.

[0003] In existing technologies, the cutting devices for profiles use a top-to-bottom straight cutting method. Due to the long vertical ribs and the small contact area between the moving blade and the ribs, severe deformation easily occurs at the vertical ribs. Furthermore, burrs easily appear on the cut surface of the deformed vertical ribs during the cutting process, requiring secondary shaping. Even if the secondary shaping can restore the shape of the profile, it increases costs and also has an adverse effect on the product's strength and other properties. Summary of the Invention

[0004] The purpose of this invention is to provide a method for cutting profiles, so as to solve the problems of increased costs and reduced product strength and other properties caused by secondary shaping after cutting profiles in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] On one hand, the present invention provides a method for cutting profiles, the method comprising:

[0007] S1. Determine the length of each side of the cross section of the profile; sum the lengths of all parallel sides to get the total length, and define them as the first group and the second group in order of the size of the total length. Select any side from the first group as the first side and select any side from the second group as the second side.

[0008] S2. Determine the angle between the first side and the second side as a;

[0009] S3. Pass the profile through the fixed blade and the moving blade of the moving blade;

[0010] S4. Set the first side to be parallel to the horizontal plane, and move the moving blade relative to the fixed blade along the first direction to complete the cutting of the profile. The angle between the first direction and the horizontal plane is half a.

[0011] As a preferred technical solution for cutting profiles, the first group, the second group, and the third group are defined in order of their total length. If the total length of the third group is less than or equal to the total length of the second group and greater than or equal to the thickness of the profile, any side in the third group is selected as the third side. The extension direction of the third side is parallel to the first direction. Then the moving blade moves along the second direction. The second direction is perpendicular to the first direction or the angle between the second direction and the horizontal plane is b, where b = 90 - 0.25a.

[0012] As a preferred technical solution for cutting profiles, the profiles are defined as the first group, the second group, the third group, and the fourth group according to their total length. If the total length of the fourth group is less than or equal to the total length of the third group and greater than or equal to the thickness of the profile, any side in the fourth group is selected as the fourth side. The extension direction of the fourth side is parallel to the second direction. Then, the moving blade moves along the third direction. The angle between the third direction and the second direction and the horizontal plane is c, where c = 135 - 0.625a. The angle between the second direction and the horizontal plane is b, where b = 90 - 0.25a.

[0013] As a preferred technical solution for cutting profiles, the profiles are defined as the first group, the second group, the third group, the fourth group, and the fifth group according to their total length. If the total length of the fifth group is less than or equal to the total length of the fourth group and greater than or equal to the thickness of the profile, any side in the fifth group is selected as the fifth side. The extension direction of the fifth side is parallel to the third direction. Then the moving blade moves along the fourth direction. The angle between the fourth direction and the third direction or the horizontal plane is d, where d = 157.5 - 0.8125a. The angle between the third direction and the horizontal plane is c, where c = 135 - 0.625a.

[0014] As a preferred technical solution for cutting profiles, the profiles are defined sequentially as the first group, the second group, the third group, the fourth group, the fifth group, and the sixth group according to their total length. If the total length of the sixth group is less than or equal to the total length of the fifth group, and greater than or equal to the thickness of the profile, any side in the sixth group is selected as the sixth side. The extension direction of the sixth side is parallel to the fourth direction, and the moving blade moves along the fifth direction. The angle between the fifth and fourth directions and the horizontal plane is e, where e = 168.75 - 0.90625a. The angle between the fourth direction and the horizontal plane is d, where d = 157.5 - 0.8125a. If the length of the sixth side is less than the thickness of the profile, the moving blade moves along the fourth direction.

[0015] As a preferred technical solution for cutting profiles, the shape of the fixed cutting edge needs to be determined before step S4. The method for determining the shape of the fixed cutting edge includes the following steps:

[0016] S41. First, based on the cross-sectional outline of the profile, leave a gap of 1mm-2mm to draw the initial drawing of the fixed cutting edge;

[0017] S42. Move the cross-sectional profile of the profile to the cutting position according to the moving direction of the moving blade;

[0018] S43. Adjust the initial drawing to form the intermediate drawing of the fixed blade, so that the cutting edges of the intermediate drawing of the fixed blade fit the cross-sectional contour of the profile.

[0019] As a preferred technical solution for cutting profiles, the shape of the moving blade needs to be determined before step S4. The method for determining the shape of the moving blade includes the following steps:

[0020] S44. First, based on the cross-sectional shape of the profile, reserve a gap of 1mm-2mm to draw the initial dynamic drawing of the moving blade.

[0021] S45. Move the initial drawing along the direction of the moving blade until all sides of the profile cross-section are cut.

[0022] S46. Adjust the initial moving drawing to form the moving cutting drawing, so that the cutting edges of the moving cutting drawing fit the cross-sectional contour of the profile.

[0023] As a preferred technical solution for a method of cutting profiles, after step S46, the following steps are also included:

[0024] S47. Move the moving blade diagram to the position before cutting, and increase the gap in the intermediate diagram of the fixed blade to form the fixed blade diagram. The gaps at corresponding points of the fixed blade diagram and the moving blade diagram are the same.

[0025] In a preferred embodiment of a method for cutting profiles, the gap size of the fixed blade is smaller than the corresponding gap size of the moving blade.

[0026] As a preferred technical solution for cutting profiles, when the opening of the profile is facing upward, the cutting direction of the moving blade is from the upper left to the lower right or from the upper right to the lower left.

[0027] The beneficial effects of this invention are as follows:

[0028] This invention provides a method for cutting profiles. The method includes the following steps: determining the length of each side of the profile's cross-section; summing the lengths of all parallel sides to obtain the total length, defining them as a first group and a second group according to their total length; randomly selecting one side from the first group as the first side, and randomly selecting one side from the second group as the second side; determining the angle between the first and second sides as 'a'; passing the profile through the fixed blade and the moving blade of a fixed blade; setting the first side parallel to the horizontal plane; and moving the moving blade relative to the fixed blade along a first direction to complete the cutting of the profile. The angle between the first direction and the horizontal plane is half 'a'. This process ensures that the sidewalls of both the first and second sides can contact the corresponding cuts of the fixed blade, resulting in a large support area. Throughout the cutting process, neither the first nor the second side will deform, and there will be no burrs caused by deformation, avoiding subsequent secondary shaping processing, saving costs, and helping to ensure the strength and other properties of the profile. Attached Figure Description

[0029] Figure 1 This is a flowchart of the method for cutting profiles in an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the cutting direction of the moving blade in an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the adjustment structure of the fixed blade edge in an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure before adjustment of the moving blade edge in an embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the structure after the moving blade is adjusted at the corner edge in an embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the adjusted moving blade and fixed blade resetting structure in an embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the secondary adjustment of the fixed blade edge in an embodiment of the present invention.

[0036] In the picture:

[0037] 111. First horizontal side; 112. Second vertical side; 113. Third corner side;

[0038] 210. First fixed horizontal side; 220. Second fixed vertical side; 230. Third fixed horizontal side;

[0039] 310. Corner. Detailed Implementation

[0040] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0044] like Figures 1 to 7 As shown, Figure 1 This is a flowchart of the method for cutting profiles in an embodiment of the present invention. Figure 2 This is a schematic diagram of the cutting direction of the moving blade in an embodiment of the present invention. Figure 3 This is a schematic diagram of the adjustment structure of the fixed blade edge in an embodiment of the present invention. Figure 4 This is a schematic diagram of the structure before adjustment of the moving blade edge in an embodiment of the present invention. Figure 5 This is a schematic diagram of the structure after the moving blade is adjusted at the corner edge in an embodiment of the present invention. Figure 6 This is a schematic diagram of the adjusted moving blade and fixed blade reset structure in an embodiment of the present invention. Figure 7 This is a schematic diagram of the secondary adjustment of the fixed blade edge in an embodiment of the present invention. This embodiment provides a method for cutting irregular profiles, which includes the following steps:

[0045] S1. Determine the length of each side of the cross section of the profile; sum the lengths of all parallel sides to get the total length, and define them as the first group and the second group in order of the size of the total length. Select any side from the first group as the first side and select any side from the second group as the second side.

[0046] S2. Determine the angle between the first side and the second side as 'a'.

[0047] S3. Pass the profile through the fixed blade and the moving blade of the fixed blade.

[0048] S4. Set the first side to be parallel to the horizontal plane. The moving blade moves relative to the fixed blade along the first direction to complete the cutting of the profile. The angle between the first direction and the horizontal plane is half an angle (α). In this embodiment, the first direction is the cutting direction of the moving blade. Half an angle (α) is 0.5α. In this embodiment, the profiles are arranged sequentially according to their total length and defined as the nth group (n is a positive integer). First, the two groups with the longest and second longest total lengths are selected as references.

[0049] In other words, in the cross section of the profile, all parallel sides are defined as groups, and the total length of all sides in each group is used as the comparison object. Among them, the two groups of sides with the longest total length and the second longest total length are the primary considerations. In the group with the longest total length, one side is randomly selected as the first side; and in the group with the second longest total length, one side is randomly selected as the second side. Preferably, the first side and the second side are adjacent to facilitate the measurement of the angle between the first side and the second side.

[0050] By using the above method, the longest sidewall of the first side and the second longest sidewall of the second side can both contact the corresponding cut of the fixed blade. This results in a large support area for both the first and second sides. Since the cutting direction differs from both the extension direction of the first and second sides, no deformation occurs on either side during the entire cutting process, and no burrs are generated due to deformation. This avoids the need for secondary shaping of the first and second sides later, saving costs and ensuring the strength and other properties of the profile. The method described in this embodiment is applicable to the cutting of double-C-shaped beams. In this embodiment, the moving blade cuts from the upper right to the lower left or from the upper left to the lower right.

[0051] Furthermore, in some embodiments, the cross-section of the profile has three extending directions among all its edges, namely the first edge, the second edge, and the third edge, wherein the extending direction of the third edge is different from that of the first and second edges. The cutting direction of the moving blade needs to be redefined. The cutting method for the profile includes the following steps: The profile is sequentially defined as a first group, a second group, and a third group according to its total length. If the total length of the third group is less than or equal to the total length of the second group, and greater than or equal to the thickness of the profile, any edge in the third group is selected as the third edge. The extending direction of the third edge is parallel to the first direction, and the moving blade moves along the second direction. The second direction is perpendicular to the first direction or forms an angle b with the horizontal plane, where b = 90 - 0.25a. By using the above method, the analysis of each edge in the third group of the profile is achieved, ensuring that each edge in the third group receives comprehensive support during the cutting process. This avoids deformation of the edges in the third group during cutting, as well as burrs caused by deformation. It also avoids secondary shaping of the edges in the third group later, saving costs and helping to ensure the strength and other properties of the profile. The method described in this embodiment is applicable to cutting double-C-shaped beams, wherein one of the opening edges of the double-C-shaped beam is not parallel to the bottom edge; in other words, the double-C-shaped beam has at least three edges whose extension directions are not parallel. In this embodiment, the determination of the included angle needs to be combined with the movement direction of the cutting tool. In this embodiment, when the aforementioned third edge exists, the cutting direction is the second direction. In the implementation where the second direction is perpendicular to the first direction, the cutting tool cuts from the upper left to the lower right. If the cutting direction is still from the upper right to the lower left, the angle between the cutting direction and the horizontal plane is b = 90 - 0.25a. The specific calculation method can be based on the fact that the sum of the interior angles of a triangle is 180°, specifically b = 180 - a - (180 - 1.5a) / 2.

[0052] Furthermore, the cross-section of the profile has four extending directions among all its edges, namely the first edge, the second edge, the third edge, and the fourth edge, where the extending directions of the first edge, the second edge, the third edge, and the fourth edge are all different. The cutting direction of the moving blade needs to be redefined. The cutting method for the profile includes the following steps: The profile is sequentially defined as the first group, the second group, the third group, and the fourth group according to its total length. If the total length of the fourth group is less than or equal to the total length of the third group, and greater than or equal to the thickness of the profile, any edge in the fourth group is selected as the fourth edge. The extending direction of the fourth edge is parallel to the second direction. Then, the moving blade moves along the third direction. The angle between the third direction and the second direction, or between the third direction and the horizontal plane, is c, where c = 135 - 0.625a. The angle between the second direction and the horizontal plane is b, where b = 90 - 0.25a. By using the above method, the analysis of each side in the fourth group of the profile is realized, so that each side in the fourth group can also be fully supported during the cutting process. This avoids deformation of each side in the fourth group during the cutting process, as well as burrs caused by deformation, avoiding secondary shaping of each side in the fourth group in the later stage, saving costs, and helping to ensure the strength and other properties of the profile. The method involved in this embodiment is applicable to the cutting of double C-joint beams or sigma beams. In the double C-joint beam, the two sides at two openings are not parallel and are not parallel to the bottom edge. In other words, the double C-joint beam has at least four sides with non-parallel extension directions. In the sigma beam, the middle side is not parallel to the two side sides and has an opening side that is not parallel to the bottom edge. In other words, the sigma beam has at least four sides with non-parallel extension directions. In this embodiment, when the above-mentioned fourth side exists, in the implementation where the third direction is perpendicular to the second direction, the moving blade cuts from the upper left to the lower right, where the cutting direction of the second direction is from the upper right to the lower left. If the cut is still made from the upper right to the lower left, the angle between the cutting direction and the horizontal plane is c = 135 - 0.625a. The specific calculation method can be referenced from the fact that the sum of the interior angles of a triangle is 180°, specifically c = 180 - a - (180 - 1.5a) / 4.

[0053] Furthermore, the cross-section of the profile has five extending directions among all its edges, namely the first edge, the second edge, the third edge, the fourth edge, and the fifth edge, each with a different extending direction. The cutting direction of the moving blade needs to be redefined. The cutting method for the profile includes the following steps: Groups are defined sequentially according to their total length as the first group, the second group, the third group, the fourth group, and the fifth group. If the total length of the fifth group is less than or equal to the total length of the fourth group, and greater than or equal to the thickness of the profile, any edge in the fifth group is selected as the fifth edge. The extending direction of the fifth edge is parallel to the third direction. The moving blade then moves along the fourth direction. The angle between the fourth direction and the third direction, or between the fourth direction and the horizontal plane, is d, where d = 157.5 - 0.8125a. The angle between the third direction and the horizontal plane is c, where c = 135 - 0.625a. By using the above method, the analysis of each side in the fifth group of the profile is realized, so that each side in the fifth group can also be fully supported during the cutting process. This avoids deformation of each side in the fifth group during the cutting process, as well as burrs caused by deformation, avoiding secondary shaping of each side in the fifth group in the later stage, saving costs, and helping to ensure the strength and other properties of the profile. The method involved in this embodiment is applicable to the cutting of sigma beams, wherein the middle side of the sigma beam is not parallel to the two side sides, and has an opening side that is not parallel to the bottom side. In other words, the sigma beam has at least five sides with non-parallel extension directions. In this embodiment, when the above-mentioned fifth side exists, in the implementation where the cutting direction is the fourth direction perpendicular to the third direction, the moving blade cuts from the upper left to the lower right, wherein the cutting direction of the third direction is from the upper right to the lower left. If the cutting is still from the upper right to the lower left, the angle between the cutting direction and the horizontal plane is d = 157.5 - 0.8125a. The specific calculation method can be referenced from the fact that the sum of the interior angles of a triangle is 180°, specifically d = 180 - a - (180 - 1.5a) / 8.

[0054] In some embodiments, the cross-section of the profile has six extending directions among all its edges, namely the first edge, the second edge, the third edge, the fourth edge, the fifth edge, and the sixth edge, wherein the extending directions of the first edge, the second edge, the third edge, the fourth edge, the fifth edge, and the sixth edge are all different. The cutting direction of the moving blade needs to be redefined. The cutting method for the profile includes the following steps: The profile is sequentially defined as the first group, the second group, the third group, the fourth group, the fifth group, and the sixth group according to its total length. If the total length of the sixth group is less than or equal to the total length of the fifth group, and greater than or equal to the thickness of the profile, any edge in the sixth group is selected as the sixth edge. The extending direction of the sixth edge is parallel to the fourth direction, and the moving blade moves along the fifth direction. The angle between the fifth direction and the fourth direction or the horizontal plane is e, where e = 168.75 - 0.90625a. The angle between the fourth direction and the horizontal plane is d, where d = 157.5 - 0.8125a. If the length of the sixth edge is less than the thickness of the profile, the moving blade moves along the fourth direction. By using the above method, the analysis of each side in the sixth group of the profile is achieved. If the length of each side in the sixth group is large, it is cut according to the fifth direction, so that each side in the sixth group can be fully supported during the cutting process. This avoids deformation of each side in the sixth group during the cutting process, as well as burrs caused by deformation, avoiding secondary shaping of each side in the sixth group later, saving costs, and helping to ensure the strength and other properties of the profile. The method involved in this embodiment is applicable to the cutting of sigma beams or other beams with more complex cross-sectional structures. In other words, the sigma beam or other beam has at least six sides with non-parallel extension directions. If the total length of each side in the sixth group is small, less than the thickness of the profile, there is no need to consider supporting the sidewalls of the sixth group. Due to the small length, even if the cutting direction is the same as the length direction of the sixth side, and the support surface is the end face of the sixth side, no deformation will occur, and there is no need to continue analyzing the seventh side. In this embodiment, when the sixth side exists, in the implementation where the cutting direction is perpendicular to the fifth and fourth directions, the moving blade cuts from the upper left to the lower right, where the cutting direction of the fourth direction is from the upper right to the lower left. If the cutting is still from the upper right to the lower left, the angle between the cutting direction and the horizontal plane is e = 168.75 - 0.90625a. The specific calculation method can be based on the fact that the sum of the interior angles of a triangle is 180°, specifically e = 180 - a - (180 - 1.5a) / 16.

[0055] In some embodiments, the shape of the fixed cutting edge needs to be determined before step S4. The method for determining the shape of the fixed cutting edge includes the following steps:

[0056] S41. First, based on the cross-sectional profile of the profile, leave a gap of 1mm-2mm to draw the initial drawing of the fixed cutting edge.

[0057] S42. Move the cross-sectional profile of the profile to the cutting position according to the direction of the moving blade.

[0058] S43. Adjust the initial drawing to form the intermediate drawing of the fixed blade, so that the cutting edges of the intermediate drawing of the fixed blade fit the cross-sectional contour of the profile. This setting ensures that all positions of the profile can be supported by the fixed blade, avoiding the situation where the profile is suspended in a certain place and deformed during the cutting process, thus improving the appearance of the cut.

[0059] Prepare the cutting edge of the fixed blade according to the outline of the intermediate diagram of the fixed blade described above. During the cutting process, the support area for the profile should be as large as possible to improve the cutting effect and prevent the profile from being deformed by pressure or tension in the suspended part.

[0060] During the cutting process, if the third side is cut off prematurely, the profile will form a third fixed part and a third moving part at the third side. The third fixed part will contact the fixed cutting edge and remain stationary, while the third moving part will contact the moving cutting edge. In subsequent cutting processes, the third moving part will continue to move, causing tearing at the cut of the first, second, or other sides connected to the third side. To solve this problem, the shape of the moving cutting edge needs to be determined before step S4. The method for determining the shape of the moving cutting edge includes the following steps:

[0061] S44. First, based on the cross-sectional shape of the profile, leave a gap of 1mm-2mm to draw the initial dynamic drawing of the moving blade.

[0062] S45. Move the initial drawing along the direction of the moving blade until all edges of the profile cross-section are cut.

[0063] S46. The initial moving drawing is modified to form the moving cutting drawing, so that the cutting edges of the moving cutting drawing fit the cross-sectional contour of the profile. Ultimately, all edges of all profiles can be cut simultaneously.

[0064] S47. Move the moving blade diagram to the position before cutting, and increase the gap in the middle of the fixed blade diagram to form a fixed blade diagram. The gaps at corresponding points on the fixed blade diagram and the moving blade diagram are the same. In this embodiment, the contour of the fixed blade diagram that supports the profile is not adjusted during the adjustment process. In other words, once the cutting direction is determined, for example from the upper left to the lower right, all the right and lower edges of the fixed blade are fixed cutting edges, and all the left and upper edges of the moving blade are moving cutting edges. In step S43, the structure of the fixed cutting edge is mainly adjusted; in step S46, the structure of the moving cutting edge is mainly adjusted. In step S47, no further adjustment is made to the fixed cutting edge.

[0065] The moving blade edge is prepared according to the outline of the moving blade diagram described above. This ensures that all edges of the profile, such as the first, second, and third edges, are cut simultaneously as much as possible, preventing the edges cut first from affecting the uncut edges in subsequent cutting processes, thereby improving the cutting effect. In step S45, the movement direction can be the first, third, fourth, or fifth direction, depending on the specific structure of the profile and the direction of blade movement.

[0066] The gap size of the fixed cutting edge is smaller than the corresponding gap size of the moving cutting edge. This setting prevents interference during material feeding. In this embodiment, the initial dynamic drawing of the moving cutting edge is drawn based on the cross-sectional shape of the profile, with a gap of 1.5mm-2mm reserved.

[0067] In some embodiments, when the opening of the profile faces upward, the cutting direction of the moving blade is from the upper left to the lower right or from the upper right to the lower left. This arrangement ensures that the profile's insertion process, i.e., the process of the profile entering the fixed and moving blades, maintains maximum strength as much as possible, preventing bending of the edges at the profile's opening due to compression.

[0068] In some embodiments, even if the third side and the first direction are not parallel, the first direction can be appropriately adjusted to a first adjustment direction to maximize the angle between the first adjustment direction and the third side. Preferably, the edges of each extension direction are not parallel to the cutting direction.

[0069] refer to Figures 1 to 6 As shown, taking a double-C-shaped clamping beam as an example, according to the diagram of the cross-section of the double-C-shaped clamping beam, it can be seen through measurement that the sum of the lengths of all horizontal sides is the longest, and the sum of the lengths of all vertical sides is the second longest. Therefore, all horizontal sides are defined as the first group, and all vertical sides are defined as the second group. In the first group, any horizontal side is randomly selected as the first horizontal side 111, and any vertical side is randomly selected as the second vertical side 112. Through measurement, it is found that the angle between the first horizontal side 111 and the second vertical side 112 is α, where α = 90°. Therefore, when the profile is passed through the fixed blade and the moving blade, and the first horizontal side 111 is set to be parallel to the horizontal plane, the moving blade moves relative to the fixed blade along the first direction to complete the cutting of the profile. The angle between the first direction and the horizontal plane is 45°.

[0070] Furthermore, in the cross-section of the double-C-shaped clamping beam, there exists a third side, as referenced. Figure 2 If the length of the third side is less than that of the second side, the length of the third side is greater than the thickness of the profile, and the extension direction of the third side is parallel to the first direction, then the moving direction of the adjusting blade is the second direction. The angle between the second direction and the first direction or the horizontal plane is b, where b = 90 - 0.25a. Since a = 90, b = 67.5.

[0071] Regarding the adjustment of the fixed and moving blades, specifically, firstly, based on the cross-sectional contour of the profile, a fixed initial drawing of the fixed blade is drawn with a 1mm-2mm gap. In other words, the fixed initial drawing is obtained by offsetting the cross-sectional contour of the profile outward by 1mm-2mm. Therefore, the diameter of each corner of the fixed initial drawing is different from the diameter of the corresponding corner of the cross-sectional contour of the profile. The cross-sectional contour of the profile is moved in the first direction so that the first horizontal edge 111 and the second vertical edge 112 contact the first fixed horizontal edge 210 and the second fixed vertical edge 220 of the fixed initial drawing, respectively. At this time, there is a gap between the contour line at the corner between the third fixed horizontal edge 230 and the second fixed vertical edge 220 and the third corner edge 113 of the profile cross-section. The fixed initial drawing is then adjusted to form a fixed blade intermediate drawing, so that the corner of the fixed blade intermediate drawing fits with the third corner edge 113 of the profile, and the opening direction of the third corner edge 113 is the same as the moving direction of the moving blade. Of course, in the supporting direction, all the fixed cutting edges of the fixed blades abut against the profile; the contours of the fixed blades that do not perform cutting during the cutting process do not need to abut against the profile. In other words, according to the middle diagram of the fixed blades, all the edges located on the right and bottom sides of the profile abut against the profile. In this embodiment, the moving blade moves from the upper left to the lower right.

[0072] Based on the cross-sectional shape of the profile, a 1mm-2mm gap is reserved when drawing the initial moving drawing of the moving blade. In other words, the initial moving drawing is obtained by offsetting the cross-sectional profile of the profile outward by 1mm-2mm. Therefore, the diameter of each corner in the initial moving drawing is different from the diameter of the corresponding corner in the cross-sectional profile of the profile.

[0073] The moving initial drawing is moved in the first direction until the first horizontal edge 111 and the second vertical edge 112 of the cross section of the profile are cut. At this time, there is a gap between the outer contour of the corner edge 310 of the moving initial drawing and the third corner edge 113 of the cross section of the profile.

[0074] The initial moving cutter diagram is modified to form a moving cutter diagram, such that the corner edge 310 of the moving cutter diagram fits into the third corner edge 113 of the cross-section of the profile. Of course, in the cutting direction, all moving cutting edges of the moving cutter are in contact with the profile. In other words, all edges of the moving cutter diagram located on the left and top sides of the profile are in contact with the profile. In this embodiment, the moving cutter moves from the upper left to the lower right.

[0075] The cutting direction is the direction in which the moving blade moves, and the cutting direction is opposite to the supporting direction.

[0076] Reference Figure 5 and Figure 6The moving blade diagram is moved to its pre-cutting position, and the gap in the fixed blade intermediate diagram is increased to form the fixed blade diagram. The gaps at corresponding points in the fixed blade diagram and the moving blade diagram are the same. The above process does not adjust the fixed cutting edge that was previously adjusted in the fixed blade intermediate diagram, otherwise it would affect the support effect of the fixed blade.

[0077] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A method for cutting irregular profiles, characterized in that, Includes the following steps: S1. Determine the length of each side of the cross section of the profile; sum the lengths of all parallel sides to get the total length, and define them as the first group and the second group in order of the size of the total length. Select any side from the first group as the first side and select any side from the second group as the second side. S2. Determine the angle between the first side and the second side as a; S3. Pass the profile through the fixed blade and the moving blade of the moving blade; S4. Set the first side to be parallel to the horizontal plane, and move the moving blade relative to the fixed blade along the first direction to complete the cutting of the profile. The angle between the first direction and the horizontal plane is half a. The three groups are defined sequentially according to their total length. If the total length of the third group is less than the total length of the second group, and greater than or equal to the thickness of the profile, any side in the third group is selected as the third side. The extension direction of the third side is parallel to the first direction. Then the moving tool moves along the second direction. The second direction is perpendicular to the first direction or the angle between the second direction and the horizontal plane is b, where b = 90 - 0.25a.

2. The method for cutting profiles according to claim 1, characterized in that, The four groups are defined sequentially according to their total length. If the total length of the fourth group is less than that of the third group, and greater than or equal to the thickness of the profile, then any side of the fourth group is selected as the fourth side. The extension direction of the fourth side is parallel to the second direction. Then the moving tool moves along the third direction. The angle between the third direction and the second direction, or between the third direction and the horizontal plane, is c, where c = 135 - 0.625a. The angle between the second direction and the horizontal plane is b, where b = 90 - 0.25a.

3. The method for cutting profiles according to claim 2, characterized in that, The groups are defined sequentially according to their total length: Group 1, Group 2, Group 3, Group 4, and Group 5. If the total length of Group 5 is less than that of Group 4, but greater than or equal to the thickness of the profile, any side of Group 5 is selected as the fifth side. The extension direction of the fifth side is parallel to the third direction, and the moving tool moves along the fourth direction. The angle between the fourth direction and the third direction or the horizontal plane is d, where d = 157.5 - 0.8125a. The angle between the third direction and the horizontal plane is c, where c = 135 - 0.625a.

4. The method for cutting profiles according to claim 3, characterized in that, The groups are defined sequentially according to their total length: Group 1, Group 2, Group 3, Group 4, Group 5, and Group 6. If the total length of Group 6 is less than that of Group 5, but greater than or equal to the thickness of the profile, any side of Group 6 is selected as the sixth side. The extension direction of the sixth side is parallel to the fourth direction, and the moving cutter moves along the fifth direction. The angle between the fifth and fourth directions and the horizontal plane is e, where e = 168.75 - 0.90625a. The angle between the fourth direction and the horizontal plane is d, where d = 157.5 - 0.8125a. If the length of the sixth side is less than the thickness of the profile, the moving cutter moves along the fourth direction.

5. The method for cutting profiles according to any one of claims 1-4, characterized in that, Before step S4, the shape of the fixed cutting edge needs to be determined. The method for determining the shape of the fixed cutting edge includes the following steps: S41. First, based on the cross-sectional outline of the profile, leave a gap of 1mm-2mm to draw the initial drawing of the fixed cutting edge; S42. Move the cross-sectional profile of the profile to the cutting position according to the moving direction of the moving blade; S43. Adjust the initial drawing to form the intermediate drawing of the fixed blade, so that the cutting edges of the intermediate drawing of the fixed blade fit the cross-sectional contour of the profile.

6. The method for cutting profiles according to claim 5, characterized in that, Before step S4, the shape of the moving blade needs to be determined. The method for determining the shape of the moving blade includes the following steps: S44. First, based on the cross-sectional shape of the profile, reserve a gap of 1mm-2mm to draw the initial dynamic drawing of the moving blade. S45. Move the initial drawing along the direction of the moving blade until all sides of the profile cross-section are cut. S46. Adjust the initial moving drawing to form the moving cutting drawing, so that the cutting edges of the moving cutting drawing fit the cross-sectional contour of the profile.

7. The method for cutting profiles according to claim 6, characterized in that, Following step S46, the following steps are also included: S47. Move the moving blade diagram to the position before cutting, and increase the gap in the intermediate diagram of the fixed blade to form the fixed blade diagram. The gaps at corresponding points of the fixed blade diagram and the moving blade diagram are the same.

8. The method for cutting profiles according to claim 6, characterized in that, The gap dimension of the fixed cutting edge is smaller than the corresponding gap dimension of the moving cutting edge.

9. The method for cutting profiles according to claim 1, characterized in that, When the opening of the profile is facing upward, the cutting direction of the moving blade is from the upper left to the lower right or from the upper right to the lower left.

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