Chain hand-drawing template ruler, hand-drawing method and template ruler design method

Abstract

The application provides a chain hand-drawing template ruler, a hand-drawing method and a template ruler design method, and the template ruler comprises a transparent ruler body, a first chain drawing area, a second chain drawing area, a third chain drawing area, a fourth chain drawing area and a fifth chain drawing area.The beneficial effects of the application are as follows: the basic shape of a jewelry chain can be quickly, accurately and efficiently drawn through the hollow area in the template ruler, the drawing steps of reference lines and auxiliary lines are omitted, and the drawing time is saved; the four reference lines and four positioning holes can accurately determine the position and inclination angle of the drawn chain unit structure, can assist the drawing of straight chain and can draw curved chain, save the drawing time, increase the drawing accuracy, reduce the positioning error in the drawing process, solve the problems of time-consuming drawing, low accuracy, chain diversity limitation and the like, and improve the efficiency and accuracy of drawing the jewelry chain.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of jewelry hand-drawing design, and particularly relates to a chain hand-drawing template ruler, a hand-drawing method and a template ruler design method. BACKGROUND

[0002] In the field of jewelry, jewelry hand-drawing is an important skill in jewelry design. Jewelry designers need to draw design drawings in advance to preview the finished product effect and ensure the accuracy of jewelry manufacturing. Jewelry hand-drawing template rulers are necessary tools for assisting jewelry designers to quickly draw. Chains play a crucial role in the field of jewelry design and are often used in jewelry styles such as bracelets, necklaces, earrings, and brooches as an important part of the design. Chain drawing is one of the core links in the process of jewelry hand-drawing design. Currently, the jewelry hand-drawing template rulers circulating in the market are mainly divided into two categories. One is the American Tami template ruler, which is used to draw mainstream gem cutting and shaping patterns. The other is the Japanese jewelry design and research institute template ruler, which includes mainstream gem cutting and shaping, gem cutting and shaping with facet lines, ring perspective and front view, and jewelry-related accessory buckles. There is currently a lack of a template ruler specifically for drawing jewelry chains.

[0003] Currently, existing jewelry drawing template rulers have wide applicability in many jewelry design applications and provide a variety of standard shapes and sizes to meet different design needs. However, when using these existing jewelry drawing template rulers to draw jewelry chains, there are the following limitations:

[0004] 1. The traditional chain drawing method requires drawing complex auxiliary lines before drawing the chain, which not only consumes a lot of time but also easily leads to confusion in the drawing process due to the large number of auxiliary lines. 2. When drawing the main part of the chain, the template ruler needs to be aligned to the previously drawn auxiliary lines one by one and used to draw the curve of the chain. However, due to factors such as the thickness of the template ruler or the angle of view, errors are easily introduced during the drawing process, affecting the accuracy of the drawing. 3. Considering the diversity of chains, the contour shape of some chains may not have a corresponding template ruler available, in which case they can only be drawn by hand, resulting in instability in terms of accuracy, fidelity, proportion control, and drawing efficiency. Overall, the method of using existing jewelry drawing template rulers to draw jewelry chains has the problems of time-consuming, low accuracy, and chain diversity limitations, which cannot meet the design needs of jewelry. SUMMARY

[0005] Therefore, in order to overcome the shortcomings of the prior art, the embodiments of the present application provide a chain hand-drawing template ruler, a hand-drawing method and a template ruler design method to solve the problems of time-consuming, low accuracy, and chain diversity limitations when using traditional jewelry drawing template rulers to draw jewelry chains in related technologies.

[0006] Embodiments of the present application provide a chain hand-drawing template ruler, comprising:

[0007] a transparent ruler body;

[0008] at least one first chain drawing area, each of the first chain drawing areas is arranged on the transparent ruler body, each of the first chain drawing areas comprises a first left drawing area and a first right drawing area, the first left drawing area comprises a first left hollow area and two first reference lines, the first right drawing area comprises a first right hollow area and two first reference lines, the first reference lines are cross lines and the intersection points are provided with first positioning holes, and each of the first reference lines is located on the same horizontal line, wherein the first left hollow area is a long circle and is provided with a first middle division connecting segment arranged horizontally in the middle part, the intersection point of one of the first reference lines on the first left drawing area is located at the midpoint of the first middle division connecting segment, and the other first reference line is located on the right side of the first left hollow area, the first right hollow area is an elliptical ring and is provided with a first horizontal division segment on the left side, the first horizontal division segment is located on the extension line of the first left hollow area and has the same width as the first left hollow area, and the intersection point of one of the first reference lines on the first right drawing area is located at the midpoint of the first right hollow area, and the other first reference line is located on the left side of the first right hollow area.

[0009] Further, at least one second chain drawing area is arranged on the transparent ruler body;

[0010] each of the second chain drawing areas comprises a second left drawing area and a second right drawing area, the second left drawing area comprises a second left hollow area and two second reference lines, the second right drawing area comprises a second right hollow area and two second reference lines, the second reference lines are cross lines and the intersection points are provided with second positioning holes, and each of the second reference lines is located on the same horizontal line, wherein the second left hollow area is a rectangle and is provided with a second middle division connecting segment arranged horizontally in the middle part, the intersection point of one of the second reference lines on the second left drawing area is located at the midpoint of the second middle division connecting segment, and the other second reference line is located on the right side of the second left hollow area, the second right hollow area is a rectangular ring and is provided with a second horizontal division segment on the left side, the second horizontal division segment is located on the extension line of the second left hollow area and has the same width as the second left hollow area, and the intersection point of one of the second reference lines on the second right drawing area is located at the midpoint of the second right hollow area, and the other second reference line is located on the left side of the second right hollow area.

[0011] Further, at least one third chain drawing area is arranged on the transparent ruler body;

[0012] Each of the third chain drawing areas comprises a third left drawing area and a third right drawing area, the third left drawing area comprises a third left hollow area and two third reference lines, the third right drawing area comprises a third right hollow area and two third reference lines, the third reference lines are cross lines and the intersection points are provided with third positioning holes, each of the third reference lines is located on the same horizontal line, wherein the third left hollow area is an oval, the long axis of the third left hollow area is inclinedly arranged, and an inclined split section extending inward from the higher end of the long axis of the third left hollow area is arranged in the third left hollow area, an inner convex part is arranged on the lower edge of the higher end of the long axis of the third left hollow area, the intersection point of one of the third reference lines on the third left drawing area is located at the midpoint of the third left hollow area, and the intersection point of the other third reference line is located in the inner convex part, and the third right drawing area is obtained by rotating the third left drawing area by 180 degrees.

[0013] Further, at least one fourth chain drawing area is arranged on the transparent ruler body.

[0014] Each of the fourth chain drawing areas comprises a fourth left drawing area and a fourth right drawing area, the fourth left drawing area comprises a fourth left hollow area and two fourth reference lines, the fourth right drawing area comprises a fourth right hollow area and two fourth reference lines, the fourth reference lines are cross lines and the intersection points are provided with fourth positioning holes, each of the fourth reference lines is located on the same horizontal line, wherein the fourth left hollow area is an oval ring and a fourth split section is arranged at the upper left corner of the fourth left hollow area, the intersection point of one of the fourth reference lines on the fourth left drawing area is located at the midpoint of the fourth split section, and the intersection point of the other fourth reference line is located on the right side of the fourth left hollow area, and the fourth right drawing area is obtained by rotating the fourth left drawing area by 180 degrees.

[0015] Further, at least one fifth chain drawing area is arranged on the transparent ruler body.

[0016] Each of the fifth chain drawing areas comprises a fifth left drawing area and a fifth right drawing area, the fifth left drawing area comprises a fifth left hollow area and two fifth reference lines, the fifth right drawing area comprises a fifth right hollow area and two fifth reference lines, the fifth reference lines are cross lines and the intersection points are provided with fifth positioning holes, each of the fifth reference lines is located on the same horizontal line, wherein the fifth left hollow area is a circle and a fifth middle split connecting section arranged horizontally is arranged in the middle of the fifth left hollow area, the intersection point of one of the fifth reference lines on the fifth left drawing area is located at the midpoint of the fifth middle split connecting section, and the intersection point of the other fifth reference line is located on the right side of the fifth left hollow area, and the fifth right drawing area is obtained by rotating the fifth left drawing area by 180 degrees.

[0017] In addition, the application also provides a chain hand drawing method for designing an O-shaped chain, using the chain hand drawing template ruler, and further comprising the following steps:

[0018] S101, draw the chain center axis L1 on the drawing paper;

[0019] S102, place the transparent ruler on the drawing paper, place the first positioning hole of the first reference line in the first left hollow area on the chain center axis L1, and make the first reference line in the first left hollow area tangent to the chain center axis L1, then use a drawing pen to trace the first left hollow area to draw the basic shape of its edge;

[0020] S103, use the drawing pen tip to press against the first positioning hole of the first reference line in the first left hollow area, and rotate the transparent ruler around this axis until another first positioning hole in the first left drawing area coincides with the chain center axis L1, then press the drawing pen tip against this first positioning hole and rotate the transparent ruler around this axis until the previous first positioning hole in the first left drawing area coincides with the chain center axis L1, and the intersection point after rotation cannot coincide with the previous position, then press the drawing pen tip against the first positioning hole that coincides with the chain center axis L1 and rotate the transparent ruler around this axis until the first reference line in the first left hollow area is tangent to the chain center axis L1, then use a drawing pen to trace the first left hollow area to draw the basic shape of its edge;

[0021] S104, continuously repeat the step S103 until the basic shape fills the chain center axis L1;

[0022] S105, place the first positioning hole of the first reference line in the first right hollow area on the chain center axis L1, and make it coincide with the coincidence point of the first positioning hole of the first reference line in the first left hollow area and the chain center axis L1, use the drawing pen tip to press against the first positioning hole of the first reference line in the first right hollow area, and rotate the transparent ruler around this axis,

[0023] make the first reference line in the first right hollow area tangent to the chain center axis L1, and use a drawing pen to trace the first right hollow area to draw the basic shape;

[0024] S106, use the drawing pen tip to press against the first positioning hole that coincides with the chain center axis L1, and rotate the transparent ruler around this axis until another first positioning hole of another first reference line in the first right drawing area coincides with the chain center axis L1, then press the drawing pen tip against this first positioning hole and rotate the transparent ruler around this axis until another first positioning hole in the first right drawing area coincides with the chain center axis L1, press the drawing pen tip against this coincidence point and rotate the transparent ruler around this axis until another first reference line in the first right hollow area is tangent to the chain center axis L1, then use a drawing pen to trace the first right hollow area to draw the basic shape;

[0025] S107, constantly repeating the step S106 until the basic shape drawn fills the chain center line L1;

[0026] S108, erasing the chain center line L1.

[0027] The application also provides a chain hand-drawing method for designing a box chain, using the chain hand-drawing template ruler described above, and further comprising the following steps:

[0028] S201, drawing the chain center line L2 on the drawing paper;

[0029] S202, placing the transparent ruler body on the drawing paper, placing the second positioning hole of the second reference line in the second left hollow area on the chain center line L2, and making the second reference line in the second left hollow area coincide with the chain center line L2, and then using a drawing pen to trace the second left hollow area to draw the basic shape of the edge;

[0030] S203, using the tip of the drawing pen to press against the second positioning hole outside the second left hollow area in the second left drawing area, and rotating the transparent ruler body about the second positioning hole until the second positioning hole of the second reference line in the second left hollow area coincides with the chain center line L2, and using a drawing pen to trace the second left hollow area to draw the basic shape;

[0031] S204, constantly repeating the step S203 until the basic shape drawn fills the chain center line L2;

[0032] S205, placing the transparent ruler body on the basic shape that has been drawn, making the second positioning hole outside the second right hollow area in the second right drawing area coincide with the second positioning hole in the second left hollow area on the chain center line L2, and using a drawing pen to trace the second right hollow area to draw the basic shape;

[0033] S206, using the tip of the drawing pen to press against the second positioning hole in the second right hollow area,

[0034] and rotating the transparent ruler body about the second positioning hole until the second positioning hole outside the second right hollow area in the second right drawing area coincides with the chain center line L2, and then rotating the transparent ruler body based on the coincidence point so that the second positioning hole in the second right hollow area after rotation coincides with the chain center line L2, and using a drawing pen to trace the second right hollow area to draw the basic shape;

[0035] S207, constantly repeating the step S206 until the basic shape drawn fills the chain center line L1;

[0036] S208, erasing the chain center line L2.

[0037]

[0037] The application also provides a chain hand-drawing method for designing Cuban chains, using the chain hand-drawing template ruler, and further comprising the following steps:

[0038] S301, drawing a chain center axis L3 on a drawing paper;

[0039] S302, placing the transparent ruler body on the drawing paper, placing a third positioning hole of a third reference line in the third left hollowed area on the chain center axis L3, and making the third reference line in the third left hollowed area tangent to the chain center axis L3, and then using a drawing pen to trace the third left hollowed area to draw the basic shape of the edge thereof;

[0040] S303, using the drawing pen tip to abut against the third positioning hole of the third reference line in the third left hollowed area, and rotating the transparent ruler body about the third positioning hole until another third positioning hole in the third left drawing area coincides with the chain center axis L3, after the coincidence, abutting the drawing pen tip against the third positioning hole, and rotating the transparent ruler body about the third positioning hole until the previous third positioning hole in the third left drawing area coincides with the chain center axis L3, requiring the intersection point after the rotation to not coincide with the previous position, and then using the drawing pen tip to abut against the third positioning hole coinciding with the chain center axis L3, and rotating the transparent ruler body about the third positioning hole until the third reference line in the third left hollowed area is tangent to the chain center axis L3, and then using the drawing pen to trace the third left hollowed area to draw the basic shape of the edge thereof;

[0041] S304, continuously repeating the step S303 until the basic shape drawn fills the chain center axis L3;

[0042] S305, placing a third positioning hole of a third reference line in the third right hollowed area on the chain center axis L3, and making it coincide with the intersection point of the chain center axis L3 and the third positioning hole of the third reference line outside the third left hollowed area in the third left drawing area, using the drawing pen tip to abut against the third positioning hole of the third reference line in the third right hollowed area, and rotating the transparent ruler body about the third positioning hole until the third reference line in the third right hollowed area is tangent to the chain center axis L3, and using the drawing pen to trace the third right hollowed area to draw the basic shape;

[0043] S306, using the drawing pen tip to press against the third positioning hole coinciding with the chain axis L3, and rotating the transparent ruler body about the third positioning hole, until another third positioning hole of another third reference line in the third right hollow area coincides with the chain axis L3, then using the drawing pen tip to press against the third positioning hole, and rotating the transparent ruler body about the third positioning hole, until another third positioning hole of another third reference line in the third right drawing area coincides with the chain axis L3, using the drawing pen tip to press against the coinciding point, and rotating the transparent ruler body about the coinciding point, until another third reference line in the third right hollow area is tangent to the chain axis L3, then using the drawing pen to draw the third right hollow area, to draw a basic shape;

[0044] S307, repeatedly performing the step S306 until the basic shape is filled with the chain axis L3;

[0045] S308, erasing the chain axis L3 and the redundant lines.

[0046] In order to achieve the design of the chain hand-drawing template ruler, the embodiment of the present application further provides a design method of the chain hand-drawing template ruler, comprising the following steps:

[0047] S1, selecting a chain and extracting the contour line pattern of the constituent elements according to the drawing of the chain, to obtain a first pattern and a second pattern, the drawing of the chain comprising element one and element two, and the element one and the element two being in an alternating arrangement, the first pattern being the contour line pattern of the element one, the second pattern being the contour line pattern of the element two, and the first pattern and the second pattern being center-symmetric patterns;

[0048] S2, designing a first line drawing and a second line drawing according to the first pattern and the second pattern: horizontally arranging the first pattern and the second pattern, the first line drawing and the second line drawing each comprising two cross-shaped reference lines, all the reference lines being located on the same horizontal line, and the intersection of each reference line being provided with a positioning hole, one reference line of the first line drawing coinciding with the center-symmetric point of the first pattern, and the other reference line being close to the second pattern, one reference line of the second line drawing coinciding with the center-symmetric point of the second pattern, and the other reference line being close to the first pattern;

[0049] S3, determining a first hollow area and a second hollow area, the second hollow area being the area of the second pattern after removing the overlapping part with the first pattern;

[0050] The first hollow area and the first line drawing constitute a left drawing area, the second hollow area and the second line drawing constitute a right drawing area, and the left drawing area and the right drawing area constitute a first chain drawing area or a second chain drawing area.

[0051] Further, in the step S3, the first hollowed-out area is the area after the first pattern removes the part overlapping with the second pattern, and the left drawing area and the right drawing area constitute a third chain drawing area.

[0052] The technical scheme provided by the embodiment of the application has the beneficial effects that:

[0053] 1. The chain hand-drawing template ruler, hand-drawing method and template ruler design method can quickly, accurately and efficiently draw the basic shape of a jewelry chain through the hollowed-out area in the template ruler, and the process omits the drawing steps of reference lines and auxiliary lines, thereby greatly saving drawing time; the four reference lines and four positioning holes in the template ruler can accurately determine the position and inclination angle of the drawn chain unit structure, which can not only assist in drawing a straight chain, but also draw a curved chain, thereby saving drawing time, increasing drawing accuracy, reducing the problem of returning the drawing due to positioning errors in the drawing process, and solving the problems of time consumption, low accuracy and chain diversity limitation in the prior art, thereby improving the efficiency and accuracy of drawing a jewelry chain.

[0054] 2. The chain hand-drawing template ruler, hand-drawing method and template ruler design method include a plurality of chain drawing areas on the transparent ruler body, and the different chain drawing areas are provided with drawing lines and hollowed-out areas of different chain shapes and different sizes of the shapes, which can assist in drawing different chain types and sizes, and solve the problem that the traditional template ruler does not have a corresponding template available when drawing part of the chain. BRIEF DESCRIPTION OF DRAWINGS

[0055] Figure 1 is a schematic view of a chain hand-drawing template ruler of the present application;

[0056] Figure 2 is a schematic view of a first chain drawing area;

[0057] Figure 3 is a schematic view of a first left hollowed-out area and a first right hollowed-out area;

[0058] Figure 4 is a schematic view of drawing an O-shaped chain chain by using the first chain drawing area of the chain hand-drawing template ruler of the present application;

[0059] Figure 5 is a schematic view of a second chain drawing area;

[0060] Figure 6 is a schematic view of a second left hollowed-out area and a second right hollowed-out area;

[0061] Figure 7 is a schematic view of drawing a box chain chain by using the second chain drawing area of the chain hand-drawing template ruler of the present application;

[0062] Figure 8 is a schematic view of a third chain drawing area;

[0063] Figure 9 is a schematic view of a third left hollowed area and a third right hollowed area;

[0064] Figure 10 is a schematic view of a third chain drawing area of a chain hand-drawing template ruler according to the present application, which is used to draw a Cuban chain;

[0065] Figure 11 is a schematic view of a fourth chain drawing area;

[0066] Figure 12 is a schematic view of a fifth chain drawing area;

[0067] Figure 13 is a schematic view of a design process of a template ruler of an O-shaped chain according to the present application;

[0068] Figure 14 is a schematic view of a design process of a template ruler of a box chain according to the present application;

[0069] Figure 15 is a schematic view of a design process of a template ruler of a Cuban chain according to the present application.

[0070] In the figure: 1, transparent ruler body; 2, drawing area; 3, scale line; 4, chain name; 5, chain pattern; 6, first chain drawing area; 61, first left drawing area; 62, first right drawing area; 611, first left hollowed area; 621, first right hollowed area; 612 / 613 / 622 / 623, first reference line; 614 / 615 / 624 / 625, first positioning hole; 616, first middle-division connecting section; 626, first horizontal division section; 7, second chain drawing area; 71, second left drawing area; 72, second right drawing area; 711, second left hollowed area; 721, second right hollowed area; 712 / 713 / 722 / 723, second reference line; 714 / 715 / 724 / 725, second positioning hole; 716, second middle-division connecting section; 726, second horizontal division section; 8, third chain drawing area; 81, third left drawing area; 82, third right drawing area; 811, third left hollowed area; 821, third right hollowed area; 812 / 813 / 822 / 823, third reference line; 814 / 815 / 824 / 825, third positioning hole; 816, inclined division section; 817, inner protruding part; 9, fourth chain drawing area; 10, fifth chain drawing area; 11, sixth chain drawing area; 100, first pattern; 101 / 201, reference line; 102 / 202, positioning hole; 103, left drawing area; 200, second pattern; 203, right drawing area. DETAILED DESCRIPTION

[0071] For the purposes of the present invention, the term "coupled" is used to describe both an indirect coupling and a direct coupling between two entities, where coupling includes use of one or more intermediate couples between those entities. Coupling can further encompass physically touching of one entity by another entity as well as non-physically touching of one entity by another entity.

[0072] In all of the examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments can have different values.

[0073] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in great detail herein, but should be considered as part of the specification, where appropriate.

[0074] It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, it should not require further discussion in subsequent figures. It is to be understood that the figures are not necessarily drawn to scale.

[0075] It should be further understood that the terms "connected", "coupled", and "connected", or the like, should be interpreted broadly to include a direct or indirect coupling between entities, unless explicitly stated otherwise. For example, a connection can be mechanical, electrical, or magnetic, and can be direct or through an intermediary medium. It should also be understood that the terms "connected" and "coupled" can be used interchangeably, unless explicitly stated otherwise.

[0076] Reference is made to Figure 1 The embodiment of the present application provides a chain hand-drawing template ruler, which comprises a transparent ruler body 1 and at least one first chain drawing area 6, at least one second chain drawing area 7, at least one third chain drawing area 8, at least one fifth chain drawing area 9 and at least one fifth chain drawing area 10 arranged on the transparent ruler body 2.

[0077] As shown in Figure 1 The transparent ruler body 1 is generally made of transparent plastic, and the content on the drawing paper can be seen through the transparent ruler body 1 when the transparent ruler body 1 is placed on the drawing paper. The transparent ruler body 1 is generally rectangular, and the edge is provided with a length scale line 3.

[0078] The first chain drawing area 6, the second chain drawing area 7, the third chain drawing area 8, the fourth chain drawing area 9 and the fifth chain drawing area 10 can be designed according to actual design needs. The first chain drawing area 6, the second chain drawing area 7, the third chain drawing area 8, the fourth chain drawing area 9 and the fifth chain drawing area 10 can be set in equal proportions, such as three in this embodiment, and are arranged in the drawing area 2. Each chain drawing area has a corner with a chain specification size mark, and the left side of each chain drawing area has a chain name 4 and a chain pattern 5.

[0079] As shown in Figure 2 and 3 Each of the first chain drawing area 6 is used to design an O-shaped chain, and each of the first chain drawing area 6 includes a first left drawing area 61 and a first right drawing area 62. The first left drawing area 61 includes a first left hollow area 611 and two first reference lines 612, 613, and the first right drawing area 62 includes a first right hollow area 621 and two first reference lines 622, 623. The first reference lines 612, 613, 622, 623 are cross lines and the intersection points are provided with first positioning holes 614, 615, 625, 624. Each of the first reference lines 612, 613, 622, 623 is located on the same horizontal line.

[0080] In the first left drawing area 61: the first left hollow area 611 is a long circle and has a first middle connecting section 616 arranged horizontally in the middle. The first positioning hole 614 at the intersection point of one of the first reference lines 612 on the first left drawing area 61 is located at the midpoint of the first middle connecting section 616, i.e. in the first left hollow area 611. The other first reference line 613 on the first left drawing area 611 is located on the right side of the first left hollow area 611, i.e. outside the first left hollow area 611.

[0081] In the first right drawing area 62: the first right hollow area 621 is an elliptical ring and has a first horizontal dividing section 626 on the left side. The first horizontal dividing section 626 is located on the extension line of the first left hollow area 611 and has the same width as the first left hollow area 611. The first positioning hole 624 at the intersection point of one of the first reference lines 623 on the first right drawing area 62 is located at the midpoint of the first right hollow area 621, i.e. in the first right hollow area 621. The other first reference line 622 on the first right drawing area 62 is located on the left side of the first right hollow area 62, i.e. outside the first right hollow area 621.

[0082] The first positioning hole 624 at the intersection point of one of the first reference lines 623 on the first right drawing area 62 is located at the midpoint of the first right hollow area 621, i.e. in the first right hollow area 621. The other first reference line 622 on the first right drawing area 62 is located on the left side of the first right hollow area 62, i.e. outside the first right hollow area 621.

[0083] In addition, as Figure 4 The application also provides a chain hand-drawing method for designing a Cai Diya chain, using the first chain drawing area 6 of the chain hand-drawing template ruler, and further comprising the following steps:

[0084] S101, drawing a chain center line L1 on a drawing paper;

[0085] S102, placing the transparent ruler body 1 on the drawing paper, placing the first positioning hole 614 of the first reference line 612 in the first left hollow area 611 on the chain center line L1, and tangentially arranging the first reference line 612 in the first left hollow area 611 with the chain center line L1, and then using a drawing pen to draw the basic shape of the edge of the first left hollow area 611;

[0086] S103, using the tip of the drawing pen to press against the first positioning hole 614 of the first reference line 612 in the first left hollow area 611, and rotating the transparent ruler body 1 about the first positioning hole 614 to the other first positioning hole 615 in the first left drawing area 61 coinciding with the chain center line L1, after the coincidence, pressing the tip of the drawing pen against the first positioning hole 615, and rotating the transparent ruler body about the first positioning hole 615 to the previous first positioning hole 614 in the first left drawing area 61 coinciding with the chain center line L1, requiring that the intersection point after rotation cannot coincide with the previous position, and then using the tip of the drawing pen to press against the first positioning hole 614 coinciding with the chain center line L1, and rotating the transparent ruler body 1 about the first positioning hole 614 to the first reference line 612 in the first left hollow area 611 tangentially arranged with the chain center line L1, and then using the drawing pen to draw the basic shape of the edge of the first left hollow area 611;

[0087] S104, continuously repeating the step S103 until the basic shape drawn fills the chain center line L1;

[0088] S105, placing the first positioning hole 624 of the first reference line 623 in the first right hollow area 621 on the chain center line L1, and coinciding with the intersection point of the first positioning hole 614 of the first reference line 612 in the first left hollow area 611 and the chain center line L1, using the tip of the drawing pen to press against the first positioning hole 624 of the first reference line 623 in the first right hollow area 621, and rotating the transparent ruler body 1 about the first positioning hole 624 to tangentially arrange the first reference line 623 in the first right hollow area 621 with the chain center line L1, using the drawing pen to draw the basic shape of the first right hollow area 621;

[0089] S106, using the drawing pen tip against the first positioning hole 624 coinciding with the chain axis L1, and rotating the transparent ruler body 1 as the axis, rotating to the first positioning hole 624 of another first reference line 622 in the first right hollow area 621 coinciding with the chain axis L1, after coinciding, the drawing pen tip is pressed against the first positioning hole 624, and the transparent ruler body is rotated as the axis, rotating to another first positioning hole 625 in the first right drawing area 62 coinciding with the chain axis L1, using the drawing pen tip to press against the coinciding point and rotate the transparent ruler body as the axis, after rotating to another first reference line 623 in the first right hollow area 621 tangent to the chain axis L1, using the drawing pen to sketch the first right hollow area 621, and drawing the basic shape;

[0090] S107, continuously repeating the step S106 until the basic shape drawn fills the chain axis L1;

[0091] S108, erase the chain axis L1.

[0092] As Figure 1 can be understood, the first right hollow area 621 can also be provided as an oblong ring, thereby forming the sixth chain drawing area 11 shown in Figure 1 . At this time, the sixth chain drawing area 11 is used to design a Goyard chain, and the hand-drawing method is the same as the above-mentioned O-shaped chain drawing method.

[0093] Continue as Figure 5 and 6 , each of the second chain drawing area 7 is used to design a box chain. Each of the second chain drawing area 7 includes a second left drawing area 71 and a second right drawing area 72, the second left drawing area 71 includes a second left hollow area 711 and two second reference lines 712, 713, the second right drawing area 72 includes a second right hollow area 721 and two second reference lines 722, 723, the second reference lines 712, 713, 722, 723 are cross lines and the intersection points are provided with second positioning holes 714, 715, 725, 724, and each of the second reference lines 712, 713, 722, 723 is located on the same horizontal line.

[0094] In the second left drawing area 71: the second left hollow area 711 is a rectangular ring and the middle part is provided with a second middle connecting section 716 arranged horizontally, the second positioning hole 714 at the intersection point of a second reference line 712 on the second left drawing area 71 is located at the midpoint of the second middle connecting section 716, and another second reference line 713 is located on the right side of the second left hollow area 711,

[0095] In the second right drawing area 72: the second right hollow area 721 is a rectangular ring and is provided with a second horizontal partition segment 726 on the left side, the second horizontal partition segment 726 is located on the extension line of the second left hollow area 711 and has the same width as the second left hollow area 711, a second positioning hole 724 at the intersection of a second reference line 723 on the second right drawing area 72 is located at the midpoint of the second right hollow area 721, and another second reference line 722 is located on the left side of the second right hollow area 721.

[0096] As shown in Figure 7 The application also provides a chain hand-drawing method for designing a box chain, using the second chain drawing area 7 of the chain hand-drawing template ruler, and further comprising the following steps:

[0097] S201, drawing a chain center axis L2 on a drawing paper;

[0098] S202, placing the transparent ruler body on the drawing paper, placing a second positioning hole 714 of a second reference line 712 in the second left hollow area 711 on the chain center axis L2, and making the second reference line 712 in the second left hollow area 711 coincide with the chain center axis L2, and then using a drawing pen to sketch the second left hollow area 711 to draw the basic shape of the edge;

[0099] S203, using the tip of the drawing pen to abut against a second positioning hole 715 outside the second left hollow area 711 in the second left drawing area 71, and rotating the transparent ruler body 1 about the second positioning hole 715 until the second positioning hole 714 of the second reference line 712 in the second left hollow area 711 coincides with the chain center axis L2, and then using the drawing pen to sketch the second left hollow area 711 to draw the basic shape;

[0100] S204, continuously repeating the step S203 until the basic shape is filled in the chain center axis L2;

[0101] S205, placing the transparent ruler body 1 on the basic shape that has been drawn, making a second positioning hole 725 outside the second right hollow area 721 in the second right drawing area 72 coincide with the intersection point of the second positioning hole 714 in the second left hollow area 711 on the chain center axis L2, and using the drawing pen to sketch the second right hollow area 721 to draw the basic shape;

[0102] S206, using the drawing pen tip against the second positioning hole 724 in the second right hollow area 821, and rotating the transparent ruler body, so that the second positioning hole 725 outside the second right hollow area 721 in the second right drawing area 72 coincides with the chain center axis L2, and then the transparent ruler body is rotated based on the coincidence point, so that the second positioning hole 724 in the second right hollow area 721 after rotation coincides with the chain center axis L2, and the second right hollow area 721 is drawn using the drawing pen, and a basic shape is drawn;

[0103] S207, continuously repeating the step S206 until the basic shape drawn fills the chain center axis L1;

[0104] S208, erasing the chain center axis L2.

[0105] Continue as shown in Figure 8 and 9 Each of the third chain drawing area 8 is used to design a Cuban chain chain. Each of the third chain drawing area 8 includes a third left drawing area 81 and a third right drawing area 82, the third left drawing area 81 includes a third left hollow area 811 and two third reference lines 812, 813, the third right drawing area 82 includes a third right hollow area 821 and two third reference lines 822, 823, the third reference line 812, 813, 822, 823 is a cross line and the intersection is provided with a third positioning hole 814, 815, 825, 824, and each of the third reference line 812, 813, 822, 823 is located on the same horizontal line.

[0106] In the third left drawing area 81: the third left hollow area 811 is an oval, and the major axis is inclined, such as inclined 45° in the embodiment. And the third left hollow area 811 is provided with an inclined split section 816 extending inward from the higher end of the major axis, and the third left hollow area 821 is provided with an inner convex part 817 near the lower edge of the higher end of the major axis, and the third positioning hole 814 at the intersection of a third reference line 812 on the third left drawing area 81 is located at the midpoint of the third left hollow area 811, and the other third reference line 813 is located in the inner convex part 817.

[0107] The third right drawing area 82 is obtained by rotating the third left drawing area 81 by 180°.

[0108] As shown in Figure 10 The application also provides a chain hand-drawing method for designing a Cuban chain, using the third chain drawing area 8 of the chain hand-drawing template ruler described above, and further comprising the following steps:

[0109] S301, drawing a chain center axis L3 on the drawing paper;

[0110] S302, place the transparent ruler on the drawing paper, place the third positioning hole 814 of the third reference line 812 in the third left hollow area 811 on the chain center axis L3, and make the third reference line 812 in the third left hollow area 811 tangent to the chain center axis L3, and then use a drawing pen to sketch the third left hollow area 811 to draw the basic shape of its edge;

[0111] S303, use the drawing pen tip to press against the third positioning hole 814 of the third reference line 812 in the third left hollow area 811, and rotate the transparent ruler about this axis until another third positioning hole 815 in the third left drawing area 81 coincides with the chain center axis L3, then press the drawing pen tip against the third positioning hole 815 and rotate the transparent ruler about this axis until the previous third positioning hole 814 in the third left drawing area 81 coincides with the chain center axis L3, and the intersection point after rotation cannot coincide with the previous position, then use the drawing pen tip to press against the third positioning hole 814 that coincides with the chain center axis L3, and rotate the transparent ruler about this axis until the third reference line 812 in the third left hollow area 811 is tangent to the chain center axis L3, then use a drawing pen to sketch the third left hollow area 811 to draw the basic shape of its edge;

[0112] S304, continuously repeat the step S303 until the basic shape drawn fills the chain center axis L3;

[0113] S305, place the third positioning hole 824 of the third reference line 823 in the third right hollow area 82 on the chain center axis L3, and make it coincide with the intersection point of the chain center axis L3 and the third positioning hole of the third reference line 815 outside the third left hollow area 811 in the third left drawing area 81, use the drawing pen tip to press against the third positioning hole 824 of the third reference line 823 in the third right hollow area 821, and rotate the transparent ruler about this axis until the third reference line 823 in the third right hollow area 821 is tangent to the chain center axis L3, then use a drawing pen to sketch the third right hollow area 821 to draw the basic shape;

[0114] S306, using the drawing pen tip against the third positioning hole 824 coinciding with the chain axis L3, and rotating the transparent ruler body as the axis, rotating to the third positioning hole 825 of another third reference line 822 in the third right hollow area 821 coinciding with the chain axis L3, after coinciding, the drawing pen tip is against the third positioning hole 825, and the transparent ruler body is rotated as the axis, rotating to another third positioning hole 824 in the third right drawing area 82 coinciding with the chain axis L3, using the drawing pen tip against the coinciding point and rotating the transparent ruler body as the axis, after rotating to another third reference line 823 in the third right hollow area 821 tangent to the chain axis L3, using the drawing pen to sketch the third right hollow area 821, and drawing the basic shape;

[0115] S307, repeatedly performing the step S306 until the basic shape is filled with the chain axis L3;

[0116] S308, erasing the chain axis L3 and the redundant lines.

[0117] Similarly, continue as shown in Figure 11 Each of the fourth chain drawing area 9 is used to design a lock ring chain. Each of the fourth chain drawing area 9 includes a fourth left drawing area and a fourth right drawing area, the fourth left drawing area includes a fourth left hollow area and two fourth reference lines, the fourth right drawing area includes a fourth right hollow area and two fourth reference lines, the fourth reference line is a cross line and the intersection is provided with a fourth positioning hole, and each of the fourth reference line is located on the same horizontal line.

[0118] In the fourth left drawing area: the fourth left hollow area is an oval ring and a fourth broken section is provided at the upper left corner, one of the fourth reference lines is located at the midpoint of the fourth broken section, and the other fourth reference line is located on the right side of the fourth left hollow area.

[0119] The fourth right drawing area is obtained by rotating the fourth left drawing area by 180°.

[0120] Continue as shown in Figure 12 Each of the fifth chain drawing area 10 is used to design a pearl chain. Each of the fifth chain drawing area 10 includes a fifth left drawing area and a fifth right drawing area, the fifth left drawing area includes a fifth left hollow area and two fifth reference lines, the fifth right drawing area includes a fifth right hollow area and two fifth reference lines, the fifth reference line is a cross line and the intersection is provided with a fifth positioning hole, and each of the fifth reference line is located on the same horizontal line, wherein the fifth left hollow area is circular and a fifth middle connecting section is provided in the middle portion, one of the fifth reference lines is located at the midpoint of the fifth middle connecting section, and the other fifth reference line is located on the right side of the fifth left hollow area.

[0121] The fifth right drawing area is obtained by rotating the fifth left drawing area by 180°.

[0122] And, as shown in Figure 13 , 14 and 15, in order to achieve the design of the chain hand-drawing template ruler described above, the embodiments of the present application further provide a design method of a chain hand-drawing template ruler, comprising the following steps:

[0123] S1, selecting a chain and extracting the contour line pattern of the constituent elements according to its drawing, obtaining a first pattern 100 and a second pattern 200, the drawing of the chain comprising element one and element two, and the element one and element two are presented in the form of alternating arrangement, the first pattern 100 is the contour line pattern of the element one, the second pattern 100 is the contour line pattern of the element two, and the first pattern 100 and the second pattern 100 are center-symmetric patterns;

[0124] S2, designing a first line and a second line according to the first pattern 100 and the second pattern 200: arranging the first pattern and the second pattern horizontally, the first line and the second line each comprising two cross-shaped reference lines 101, 201, all the reference lines 101, 201 being located on the same horizontal line, the intersection of each reference line 101, 201 being provided with a positioning hole 102, 202, one reference line 101 of the first line coinciding with the center-symmetric point of the first pattern 100, and the other reference line 101 being close to the second pattern 200, one reference line 201 of the second line coinciding with the center-symmetric point of the second pattern 200, and the other reference line 201 being close to the first pattern;

[0125] S3, determining a first hollow area and a second hollow area, the second hollow area being the area of the second pattern after removing the overlapping part with the first pattern;

[0126] The first hollow area and the first line constitute a left drawing area 103, the second hollow area and the second line constitute a right drawing area 203, and the left drawing area 103 and the right drawing area 203 constitute a first chain drawing area 6 or a second chain drawing area 7.

[0127] The embodiments of the present application provide a design method of a chain hand-drawing template ruler for drawing an O-shaped chain, i.e. a design method of a first chain drawing area 6, as shown in Figure 12 The specific steps are as follows:

[0128] S1: select the O-shaped chain and extract the outline pattern of its constituent elements according to the drawing to obtain a first pattern 100 and a second pattern 200, the first pattern 100 is a long circle, and the second pattern 200 is an elliptical ring.

[0129] S2: design the first and second lines according to the first and second patterns 100 and 200: set the first and second patterns horizontally, the first and second lines each include two cross-shaped reference lines 101 and 201, all the reference lines 101 and 201 are located on the same horizontal line, the intersection of each reference line 101 and 201 is provided with a positioning hole 102 and 202, the positioning hole of one reference line 101 of the first line coincides with the center symmetry point of the first pattern 100, that is, coincides with the midpoint of the first pattern 100, and the other reference line 101 is close to the second pattern 200, the positioning hole 202 of one reference line 201 of the second line coincides with the center symmetry point of the second pattern 200, that is, coincides with the midpoint of the second pattern 200, and the other reference line 201 is close to the first pattern 100.

[0130] S3, determine the first and second hollow areas, the second hollow area is the area of the second pattern 200 after removing the overlapping part with the first pattern 100, that is, the elliptical ring of the second pattern 200 removes the overlapping part with the long circle of the first pattern 100;

[0131] The first hollow area and the first line form a left drawing area 103, the left drawing area 103 is a first left drawing area 61, the first hollow area is a first left hollow area 611, and the two reference lines 101 of the first line form two first reference lines 612 and 613 in the first left drawing area 616. The second hollow area and the second line form a right drawing area 203, the second hollow area is a first right hollow area, and the two reference lines 201 of the second line form two first reference lines 622 and 623 in the first right drawing area 62, so that the left drawing area 103 and the right drawing area 203 form a first chain drawing area 6.

[0132] As shown in Figure 14 It can be understood that the same chain hand-drawing template ruler design method can also be used to complete the design method of the second chain drawing area 7 to realize the design of the box chain chain hand-drawing template ruler.

[0133] It should be noted that in step S1, when there are two overlapping areas by extracting the outline pattern of its constituent elements from the drawing to obtain the first pattern 100 and the second pattern 200, in step S3, the first hollow area is the area of the first pattern 100 after removing the overlapping part with the second pattern 200, and the left drawing area 103 and the right drawing area 203 form a third chain drawing area 7.

[0134] Specifically, such as Figure 15 As shown, in designing the hand-drawn template ruler for drawing a Cuban chain, in step S3, it is necessary to simultaneously remove the overlapping portion of the first graphic 100 with the second graphic 200, and the overlapping portion of the second graphic 200 with the first graphic 100. This is necessary to obtain the accurate first and second hollow areas, thereby forming the third chain drawing area 8. Similarly, the same procedure is required when designing the hand-drawn template ruler for drawing a chain link.

[0135] In this document, the directional terms such as front, back, top, and bottom are defined based on the position of the components in the accompanying drawings and their relative positions to each other, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that these are relative concepts and can vary depending on different methods of use and placement; the use of these directional terms should not limit the scope of protection claimed in this application.

[0136] Where there is no conflict, the embodiments and features described above can be combined with each other. The above descriptions are merely preferred embodiments of the present invention and are not intended to limit the invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A chain hand-drawn template ruler, characterized in that, include: Transparent ruler; At least one first chain drawing area is provided on the transparent ruler. Each first chain drawing area includes a first left drawing area and a first right drawing area. The first left drawing area includes a first left hollow area and two first reference lines. The first right drawing area includes a first right hollow area and two first reference lines. The first reference lines are cross lines and the intersection point is provided with a first positioning hole. Each first reference line is located on the same horizontal line. The first left hollow area is an oblong shape and has a horizontally arranged first mid-section connecting segment in the middle. The intersection point of one first reference line on the first left drawing area is located at the midpoint of the first mid-section connecting segment, and the other first reference line is located on the right side of the first left hollow area. The first right hollow area is an elliptical ring and has a first horizontal segment on the left side. The first horizontal segment is located on the extension line of the first left hollow area and has the same width as the first left hollow area. The intersection point of one first reference line on the first right drawing area is located at the midpoint of the first right hollow area, and the other first reference line is located on the left side of the first right hollow area. It also includes at least one second chain drawing area disposed on the transparent ruler; Each of the second chain drawing areas includes a second left drawing area and a second right drawing area. The second left drawing area includes a second left hollow area and two second reference lines. The second right drawing area includes a second right hollow area and two second reference lines. The second reference lines are cross lines and the intersection points are provided with second positioning holes. Each of the second reference lines is located on the same horizontal line. The second left hollow area is rectangular and has a horizontally arranged second mid-section connecting segment in the middle. The intersection point of one of the second reference lines on the second left drawing area is located at the midpoint of the second mid-section connecting segment, and the other second reference line is located on the right side of the second left hollow area. The second right hollow area is a rectangular ring and has a second horizontal segment on the left side. The second horizontal segment is located on the extension line of the second left hollow area and has the same width as the second left hollow area. The intersection point of one of the second reference lines on the second right drawing area is located at the midpoint of the second right hollow area, and the other second reference line is located on the left side of the second right hollow area.

2. The chain hand-painted template ruler as described in claim 1, characterized in that: It also includes at least one third chain drawing area disposed on the transparent ruler; Each of the third chain drawing areas includes a third left drawing area and a third right drawing area. The third left drawing area includes a third left hollow area and two third reference lines. The third right drawing area includes a third right hollow area and two third reference lines. The third reference lines are cross lines and the intersection points are provided with third positioning holes. All the third reference lines are located on the same horizontal line. The third left hollow area is elliptical with its major axis inclined. The third left hollow area has an inclined segment extending inward from the higher end of its major axis. The lower edge of the third left hollow area near the higher end of its major axis has an inward protrusion. The intersection point of one third reference line on the third left drawing area is located at the midpoint of the third left hollow area, and the other third reference line is located inside the inward protrusion. The third right drawing area is obtained by rotating the third left drawing area by 180°.

3. A chain hand-drawn template ruler as described in claim 2, characterized in that: It also includes at least one fourth chain drawing area disposed on the transparent ruler; Each of the fourth chain drawing areas includes a fourth left drawing area and a fourth right drawing area. The fourth left drawing area includes a fourth left hollow area and two fourth reference lines. The fourth right drawing area includes a fourth right hollow area and two fourth reference lines. The fourth reference lines are cross lines with a fourth positioning hole at their intersection. All the fourth reference lines are located on the same horizontal line. The fourth left hollow area is an elliptical ring with a fourth segment at its upper left corner. The intersection of one fourth reference line on the fourth left drawing area is located at the midpoint of the fourth segment, and the other fourth reference line is located to the right of the fourth left hollow area. The fourth right drawing area is obtained by rotating the fourth left drawing area by 180°.

4. A chain hand-drawn template ruler as described in claim 3, characterized in that: It also includes at least one fifth chain drawing area disposed on the transparent ruler; Each of the fifth chain drawing areas includes a fifth left drawing area and a fifth right drawing area. The fifth left drawing area includes a fifth left hollow area and two fifth reference lines. The fifth right drawing area includes a fifth right hollow area and two fifth reference lines. The fifth reference lines are cross lines and the intersection point is provided with a fifth positioning hole. All the fifth reference lines are located on the same horizontal line. The fifth left hollow area is circular and has a horizontally arranged fifth mid-section connecting segment in the middle. The intersection point of one fifth reference line on the fifth left drawing area is located at the midpoint of the fifth mid-section connecting segment, and the other fifth reference line is located on the right side of the fifth left hollow area. The fifth right drawing area is obtained by rotating the fifth left drawing area by 180°.

5. A method for hand-painting chains, characterized in that: Using a chain hand-drawn template ruler as described in claim 1, and further comprising the following steps: S101. Draw the chain's central axis L1 on the drawing paper; S102. Place the transparent ruler on drawing paper, place the first positioning hole of the first reference line in the first left hollow area on the chain central axis L1, and make the first reference line in the first left hollow area tangent to the chain central axis L1. Then use a drawing pen to trace the first left hollow area and draw the basic shape of its edge. S103. Use the tip of the drawing pen to press against the first positioning hole of the first reference line in the first left hollow area, and rotate the transparent ruler with this as the axis until the other first positioning hole in the first left drawing area coincides with the chain central axis L1. After the coincidence, press the tip of the drawing pen against the first positioning hole, and rotate the transparent ruler with this as the axis until the previous first positioning hole in the first left drawing area coincides with the chain central axis L1. It is required that the intersection point through hole after rotation should not coincide with the previous position. Then, use the tip of the drawing pen to press against the first positioning hole that coincides with the chain central axis L1, and rotate the transparent ruler with this as the axis until the first reference line in the first left hollow area is tangent to the chain central axis L1. Then, use the drawing pen to trace the first left hollow area and draw the basic shape of its edge. S104. Repeat step S103 continuously until the basic shape drawn fills the chain's central axis L1; S105. Place the first positioning hole of the first reference line in the first right hollow area on the chain's central axis L1, and make it coincide with the point where the chain's central axis L1 coincides with the first positioning hole of the first reference line in the first left hollow area. Use the tip of a drawing pen to press against the position of the first positioning hole of the first reference line in the first right hollow area, and rotate the transparent ruler around this axis. Make the first reference line in the first right hollow area tangent to the chain central axis L1, and use a drawing pen to trace the first right hollow area to draw the basic shape; S106. Using the tip of a drawing pen, press it against the first positioning hole that coincides with the central axis L1 of the chain, and rotate the transparent ruler around this axis until the first positioning hole of the other first reference line in the first right hollow area coincides with the central axis L1 of the chain. After the coincidence, press the tip of the drawing pen against the first positioning hole and rotate the transparent ruler around this axis until the other first positioning hole in the first right drawing area coincides with the central axis L1 of the chain. Press the tip of the drawing pen against the point of coincidence and rotate the transparent ruler around this axis until the other first reference line in the first right hollow area is tangent to the central axis L1 of the chain. Then, use the drawing pen to trace the first right hollow area and draw the basic shape. S107. Repeat step S106 continuously until the basic shape drawn fills the chain's central axis L1; S108, Wipe the chain centerline L1.

6. A method for hand-painting chains, characterized in that: Using a chain hand-drawn template ruler as described in claim 1, and further comprising the following steps: S201. Draw the chain's central axis L2 on the drawing paper; S202. Place the transparent ruler on the drawing paper, place the second positioning hole of the second reference line in the second left hollow area on the chain central axis L2, and make the second reference line in the second left hollow area coincide with the chain central axis L2. Then use a drawing pen to trace the second left hollow area and draw the basic shape of its edge. S203. Use the tip of the drawing pen to press against the second positioning hole outside the second left hollow area in the second left drawing area, and rotate the transparent ruler around this axis until the second positioning hole of the second reference line in the second left hollow area coincides with the chain central axis L2. Use the drawing pen to trace the second left hollow area and draw the basic shape. S204. Repeat step S203 continuously until the basic shape drawn fills the chain's central axis L2; S205. Place the transparent ruler on the already drawn basic shape. The second positioning hole outside the second right hollow area in the second right drawing area coincides with the second positioning hole in the second left hollow area on the chain central axis L2. Use a drawing pen to trace the second right hollow area and draw the basic shape. S206. Use the tip of a drawing pen to press against the second positioning hole within the second right hollow area. Rotate the transparent ruler around this axis so that the second positioning hole outside the second right hollow area in the second right drawing area coincides with the chain central axis L2. Then rotate the transparent ruler based on this coincidence point so that the second positioning hole in the second right hollow area after rotation coincides with the chain central axis L2. Use a drawing pen to trace the second right hollow area and draw the basic shape. S207. Repeat step S206 continuously until the basic shape drawn fills the chain's central axis L1; S208, Wipe the chain centerline L2.

7. A method for hand-painting chains, characterized in that: Using a chain hand-drawn template ruler as described in claim 2, and further comprising the following steps: S301. Draw the chain centerline L3 on the drawing paper; S302. Place the transparent ruler on the drawing paper, place the third positioning hole of the third reference line in the third left hollow area on the chain central axis L3, and make the third reference line in the third left hollow area tangent to the chain central axis L3. Then use a drawing pen to trace the third left hollow area and draw the basic shape of its edge. S303. Using the tip of a drawing pen, press the pen against the third positioning hole of the third reference line in the third left hollow area, and rotate the transparent ruler around this axis until another third positioning hole in the third left drawing area coincides with the chain's central axis L3. After the coincidence, press the pen tip against the third positioning hole and rotate the transparent ruler around this axis until the previous third positioning hole in the third left drawing area coincides with the chain's central axis L3. It is required that the intersection point after rotation should not coincide with the previous position. Then, press the pen tip against the third positioning hole that coincides with the chain's central axis L3 and rotate the transparent ruler around this axis until the third reference line in the third left hollow area is tangent to the chain's central axis L3. Then, use the drawing pen to trace the third left hollow area and draw the basic shape of its edge. S304. Repeat step S303 continuously until the basic shape drawn fills the chain's central axis L3; S305. Place the third positioning hole of the third reference line in the third right hollow area on the chain central axis L3, and make it coincide with the third positioning hole of the third reference line outside the third left hollow area in the third left drawing area. Use the tip of the drawing pen to touch the position of the third positioning hole of the third reference line in the third right hollow area, and rotate the transparent ruler with this as the axis to make the third reference line in the third right hollow area tangent to the chain central axis L3. Use the drawing pen to trace the third right hollow area and draw the basic shape. S306. Using the tip of a drawing pen, press it against the third positioning hole that coincides with the chain's central axis L3, and rotate the transparent ruler around this axis until the third positioning hole of another third reference line in the third right hollow area coincides with the chain's central axis L3. After the coincidence, press the tip of the drawing pen against this third positioning hole, and rotate the transparent ruler around this axis until the other third positioning hole in the third right drawing area coincides with the chain's central axis L3. Press the tip of the drawing pen against this coincidence point, and rotate the transparent ruler around this axis until the other third reference line in the third right hollow area is tangent to the chain's central axis L3. Then, use the drawing pen to trace the third right hollow area and draw its basic shape. S307. Repeat step S306 continuously until the basic shape drawn fills the chain's central axis L3; S308, Wipe away the chain centerline L3 and excess loose wires.

8. A design method for a chain hand-drawn template ruler, characterized in that: The method for designing a chain hand-drawn template ruler as described in claim 1 includes the following steps: S1. Select a chain and extract the outline of its constituent elements according to its drawing to obtain a first graphic and a second graphic. The drawing of the chain includes element one and element two, and element one and element two are presented in an alternating arrangement. The first graphic is the outline of element one, and the second graphic is the outline of element two. The first graphic and the second graphic are centrally symmetrical graphics. S2. Design a first line and a second line based on the first and second graphics: Set the first and second graphics horizontally. Both the first line and the second line include two cross-shaped reference lines. All reference lines are located on the same horizontal line. A positioning hole is set at the intersection of each reference line. The positioning hole of one reference line of the first line coincides with the center symmetry point of the first graphic, and the other reference line is close to the second graphic. The positioning hole of one reference line of the second line coincides with the center symmetry point of the second graphic, and the other reference line is close to the first graphic. S3. Determine the first cutout area and the second cutout area, wherein the second cutout area is the area after removing the part of the second graphic that overlaps with the first graphic; The first hollow area and the first drawn line form the left drawing area, the second hollow area and the second drawn line form the right drawing area, and the left drawing area and the right drawing area form the first chain drawing area or the second chain drawing area.

9. The design method of a chain hand-drawn template ruler as described in claim 8, characterized in that: In step S3, the first hollow area is the area after removing the overlapping part of the first graphic with the second graphic, and the left drawing area and the right drawing area form the third chain drawing area.

Images