Centerline alignment scale for yi embroidery symmetrical patterns

Abstract

The utility model relates to Yi embroidery technical field, concretely is Yi embroidery symmetrical pattern center line alignment scale, including caliper main part, the top surface of caliper main part is equipped with the scale line that sets up horizontally, the top surface of caliper main part is equipped with two positioning mechanism for the tight location of embroidery cloth, the positioning mechanism includes the L -shaped plate sliding connection in the top surface of caliper main part, the moving plate sliding connection in the vertical board end outer wall of L -shaped plate, the spring between the moving plate and the L -shaped plate horizontal plate end installation, the connecting rod fixed on the moving plate bottom surface, the locating plate fixed on the connecting rod bottom surface. The utility model discloses through setting up the caliper main part with scale line, the locating needle and fixed cylinder for fixing embroidery center point, the positioning mechanism of clamping embroidery cloth, the auxiliary alignment mechanism of locating pattern edge / node, solves the problem that the traditional Yi embroidery is difficult to find symmetrical pattern center line, and the size measurement is not accurate, and the embroidery cloth is easy to shift, and the symmetrical point is difficult to align, leads to the problem of low efficiency of poor quality of embroidery.

Description

Technical Field

[0001] This utility model relates to the field of Yi embroidery technology, specifically to a center line alignment ruler for symmetrical patterns in Yi embroidery. Background Technology

[0002] Yi embroidery, as the core representative of the traditional hand embroidery techniques of the Yi ethnic group in China, carries the history, culture, aesthetic taste and wisdom of life of the Yi people. Its patterns are mostly based on the sun, moon and stars, mountains, rivers and plants, birds and animals. Due to the needs of cultural connotation and visual aesthetics, symmetrical structure is the core feature of Yi embroidery pattern design and production. It is necessary to strictly follow the principle of symmetry along the central line. The accuracy of symmetry directly determines the artistic value and cultural expression of Yi embroidery works.

[0003] However, in the current Yi embroidery production process, the alignment of the center line of symmetrical patterns still relies on traditional manual operation methods, lacking special auxiliary tools, which leads to many pain points in actual production: First, it is difficult to locate the center point of the embroidery. Embroiderers mostly mark the center point by visual inspection, folding and comparison, etc., which is prone to deviation due to hand errors and fabric wrinkles. The subsequent drawing and embroidery of symmetrical patterns will be misaligned as a whole. Second, the stability of the embroidery fabric is insufficient. During embroidery, the embroidery frame or fabric is easily shifted due to the force of hand operation and the tension of the fabric. The previously marked center line and the symmetrical baseline will shift accordingly, requiring repeated adjustments, which greatly increases the working time.

[0004] Third, the alignment accuracy between the edges of symmetrical patterns and key pattern nodes is low. In the traditional method, embroiderers need to frequently compare the size of the patterns on both sides and rely solely on experience to judge whether they are symmetrical. It is difficult to accurately control the alignment error at the millimeter level. Especially for complex patterns with multiple sets of symmetrical nodes, it is easy for the patterns on both sides to be different in size and mismatched in position. Fourth, there is a lack of tools with integrated measurement and alignment functions. Existing ordinary rulers can only measure dimensions and cannot simultaneously fix the center point, limit the embroidery cloth, and locate the symmetrical nodes. The operation process is cumbersome, which not only reduces the efficiency of embroidery but also makes it difficult to guarantee the standardized quality of Yi embroidery works. It even affects the inheritance of traditional techniques and the market promotion. Against this background, we propose a center line alignment ruler for symmetrical patterns in Yi embroidery. Utility Model Content

[0005] The purpose of this utility model is to provide a center line alignment ruler for symmetrical patterns in Yi embroidery. By setting a caliper body with scale lines, a positioning needle and fixing cylinder for fixing the center point of the embroidery, a positioning mechanism for clamping the embroidery cloth, and an auxiliary alignment mechanism for positioning the edge / node of the pattern, it solves the problems of poor embroidery quality and low efficiency caused by the difficulty in finding the center line of symmetrical patterns, inaccurate size measurement, easy displacement of embroidery cloth, and difficulty in aligning symmetrical points in traditional Yi embroidery.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] The Yi embroidery symmetrical pattern centerline alignment ruler includes a caliper body. The top surface of the caliper body has horizontally arranged scale lines. The top surface of the caliper body also has two positioning mechanisms for pressing and limiting the embroidery fabric. Each positioning mechanism includes an L-shaped plate slidably connected to the top surface of the caliper body, a movable plate slidably connected to the outer wall of the vertical end of the L-shaped plate, a spring installed between the movable plate and the horizontal end of the L-shaped plate, a connecting rod fixed to the bottom surface of the movable plate, a positioning plate fixed to the bottom surface of the connecting rod, and an anti-slip plate installed on the bottom surface of the positioning plate. It also includes:

[0008] Two auxiliary alignment mechanisms are slidably connected to the bottom surface of the caliper body for positioning the edges or key pattern nodes of symmetrical patterns. Each auxiliary alignment mechanism includes an auxiliary alignment block slidably connected to the bottom surface of the caliper body and a screw threadedly connected to the auxiliary alignment block. The front outer wall of the auxiliary alignment block is provided with a through groove communicating with its inner cavity. Part of the screw is located inside the through groove of the auxiliary alignment block on the same side. The auxiliary alignment mechanism also includes a fixing plate fixed to the screw and slidably connected to the auxiliary alignment block, and a friction plate fixed to the front surface of the fixing plate for positioning the auxiliary alignment block.

[0009] In a preferred embodiment, the top surface of the caliper body is provided with a horizontally arranged guide groove near the front end, and a guide block that is slidably connected to the guide groove on the top surface of the caliper body is fixed on the bottom surface of the vertical plate end of the L-shaped plate. The positioning mechanism also includes a pad fixed on the bottom surface of the horizontal plate end of the L-shaped plate, a pull rod fixed on the outer wall of the moving plate and shaped like an L, and the spring is installed between the pad on the same side and the moving plate on the same side.

[0010] In a preferred embodiment, a vertically arranged limiting groove is provided on the front surface of the vertical end of the L-shaped plate, a connecting block is fixed on the outer wall of the movable plate, and a limiting block that is slidably connected to the limiting groove on the outer wall of the vertical end of the L-shaped plate on the same side is fixed on the outer wall of the connecting block.

[0011] In a preferred embodiment, the longitudinal cross-sectional shape of the guide groove on the top surface of the caliper body is I-shaped, the shape of the guide block is I-shaped to match the shape of the guide groove on the top surface of the caliper body, the shape of the upper limit groove on the outer wall of the vertical end of the L-shaped plate is I-shaped, and the shape of the limit block is I-shaped to match the shape of the upper limit groove on the outer wall of the vertical end of the L-shaped plate.

[0012] In a preferred embodiment, the positioning mechanism further includes a movable rod fixed to the bottom surface of the movable plate and in the shape of an L-shape. The connecting rod is fixed to the bottom surface of the horizontal bar end of the movable rod on the same side near the front end. The connecting rod is located on the front side of the caliper body. The bottom surface of the anti-slip plate is provided with anti-slip texture. When the spring is in its original length state, both the positioning plate and the anti-slip plate are located below the caliper body.

[0013] These four features allow the L-shaped plate to slide stably along the guide groove for position adjustment, and the spring installation is more secure. The pull rod facilitates manual operation of the moving plate, improving the convenience and stability of the positioning mechanism. This ensures that the moving plate does not deviate when sliding along the vertical end of the L-shaped plate, guaranteeing the accuracy of the movement of subsequent components driven by the moving plate in the positioning mechanism. It also prevents the embroidery cloth from being pressed down due to sliding misalignment. Furthermore, it ensures that the guide block does not detach when sliding within the guide groove and the limit block does not detach within the limit groove, further enhancing the connection stability of each component in the positioning mechanism and preventing components from loosening during sliding. The installation position of the connecting rod is more reasonable, and the friction is greater when the anti-slip plate presses down on the embroidery cloth, ensuring that the embroidery cloth is fixed more firmly and preventing the ruler from shifting.

[0014] In a preferred embodiment, the bottom surface of the caliper body is provided with a horizontally arranged sliding groove near the rear end. The auxiliary alignment block is slidably connected to the sliding groove on the bottom surface of the caliper body. The bottom surface of the auxiliary alignment block and the bottom surface of the caliper body are located on the same plane. Both the auxiliary alignment block and the caliper body are made of transparent acrylic material, and an auxiliary alignment line is provided at the middle position of the top surface of the auxiliary alignment block.

[0015] In a preferred embodiment, a rectangular groove is provided on the rear surface of the caliper body, which is connected to the sliding groove on its bottom surface. The screw passes through the rectangular groove on the rear surface of the caliper body and extends to the rear of the caliper body. Two movable grooves are provided on the inner bottom surface of the through groove on the front surface of the auxiliary alignment block. The auxiliary alignment mechanism also includes a movable column coaxially fixed on the front surface of the screw and located inside the through groove on the front surface of the auxiliary alignment block, a movable block fixed on the bottom surface of the fixing plate and slidably connected to the two movable grooves inside the auxiliary alignment block, and a turntable coaxially fixed on the rear surface of the screw. The movable column is fixed on the rear surface of the fixing plate on the same side.

[0016] In a preferred embodiment, the longitudinal cross-sectional shape of the groove on the bottom surface of the caliper body is convex, the shape of the auxiliary alignment block is convex and adapted to the shape of the groove on the bottom surface of the caliper body, the longitudinal cross-sectional shape of the moving groove inside the auxiliary alignment block is trapezoidal, and the shape of the moving block is trapezoidal and adapted to the shape of the moving groove inside the auxiliary alignment block.

[0017] These three features allow the auxiliary alignment block to slide smoothly, the transparent material facilitates observation of the embroidery pattern, the auxiliary alignment line helps to accurately locate key positions of the symmetrical pattern, improves alignment accuracy, and allows the screw to be easily rotated via the turntable, driving the fixed plate and friction plate to move, achieving rapid positioning and fixing of the auxiliary alignment block, making operation more convenient. The structure is more stable when the auxiliary alignment block slides in the slide groove and the moving block slides in the moving groove, preventing the auxiliary alignment mechanism components from detaching or misaligning during sliding, and ensuring the positioning effect of the symmetrical pattern.

[0018] In a preferred embodiment, the zero mark of the scale line on the top surface of the caliper body is located in the middle position, the unit of the scale line on the top surface of the caliper body is millimeters, the top surface of the caliper body is provided with an insertion hole, a fixed cylinder corresponding to the position of the insertion hole and adapted to the size is fixed on the top surface of the caliper body, a positioning pin is provided above the caliper body and slidably inserted into the fixed cylinder, and a fixed plate is fixed on the top surface of the positioning pin rod;

[0019] This feature allows the device to accurately measure the size of symmetrical patterns. The positioning pin can quickly fix the center point of the embroidery and can be pulled out after positioning, ensuring accurate center point positioning and avoiding affecting subsequent embroidery operations.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. This utility model, through the design of a caliper body, scale lines, insertion holes, fixing cylinder, positioning pin, and fixing plate, achieves precise positioning and measurement of the center line of symmetrical patterns in Yi embroidery; the scale lines, centered on the zero mark, allow for intuitive reading of the dimensions on both sides of the symmetrical pattern, ensuring symmetry accuracy; the insertion holes and fixing cylinder, in conjunction with the positioning pin, can quickly fix the center point of the embroidery, and removing the positioning pin after positioning avoids interfering with the embroidery operation, effectively solving the problems of difficulty in finding the center point and inaccurate size measurement in traditional alignment methods, thus improving the efficiency and accuracy of center line positioning and laying the foundation for subsequent symmetrical embroidery;

[0022] 2. This utility model achieves stable fixation of the embroidery fabric and precise alignment of key positions of symmetrical patterns through the setting of two positioning mechanisms and two auxiliary alignment mechanisms. The positioning mechanism uses a spring-driven anti-slip plate to press the embroidery fabric and prevent the ruler from shifting. The auxiliary alignment mechanism is adjustable and fixed by friction plates, which can accurately position the edge of the pattern or key pattern nodes and avoid pattern shifting during embroidery. The two mechanisms work together to solve the problems of unstable embroidery fabric fixation and difficulty in aligning symmetrical points of the pattern, thus ensuring the stability of the embroidery process and improving the overall neatness and quality of Yi embroidery symmetrical patterns. Attached Figure Description

[0023] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0024] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0025] Figure 3 This is a partial exploded view of the present invention;

[0026] Figure 4 This is a partial sectional view of the present invention;

[0027] Figure 5This is a schematic diagram of the overall structure of the positioning mechanism in this utility model;

[0028] Figure 6 This is one of the exploded partial views of the positioning mechanism in this utility model;

[0029] Figure 7 This is the second partial exploded view of the positioning mechanism in this utility model;

[0030] Figure 8 This is a schematic diagram of the overall structure of the auxiliary alignment mechanism in this utility model;

[0031] Figure 9 This is a partial cross-sectional view of the auxiliary alignment mechanism in this utility model;

[0032] Figure 10 This is a partial exploded view of the auxiliary alignment mechanism in this utility model;

[0033] The meanings of the labels in the diagram are as follows:

[0034] 1. Caliper body; 11. Fixed cylinder; 12. Positioning pin; 13. Fixed plate; 2. Positioning mechanism; 21. L-shaped plate; 22. Guide block; 23. Moving plate; 24. Spring; 25. Pad; 26. Moving rod; 27. Connecting rod; 28. Positioning plate; 29. ​​Anti-slip plate; 210. Connecting block; 211. Limiting block; 212. Pull rod; 3. Auxiliary alignment mechanism; 31. Auxiliary alignment block; 32. Screw; 33. Turntable; 34. Moving column; 35. Fixed plate; 36. Friction plate; 37. Moving block. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Please see Figures 1-2 , Figures 4-7The present invention provides a technical solution: a center line alignment ruler for symmetrical patterns of Yi embroidery, including a caliper body 1. The top surface of the caliper body 1 is provided with a horizontally arranged scale line. The top surface of the caliper body 1 is provided with two positioning mechanisms 2 for pressing and limiting the embroidery cloth. The positioning mechanism 2 includes an L-shaped plate 21 slidably connected to the top surface of the caliper body 1, a movable plate 23 slidably connected to the outer wall of the vertical end of the L-shaped plate 21, a spring 24 installed between the movable plate 23 and the horizontal end of the L-shaped plate 21, a connecting rod 27 fixed to the bottom surface of the movable plate 23, a positioning plate 28 fixed to the bottom surface of the connecting rod 27, and an anti-slip plate 29 installed on the bottom surface of the positioning plate 28.

[0037] By setting the caliper body 1 and setting scale lines on the top surface of the caliper body 1, the entire device can have the function of measurement. By setting two positioning mechanisms 2, the edge of the embroidery frame or fabric can be clamped to prevent the ruler from shifting, thereby achieving the positioning effect.

[0038] In this embodiment, the top surface of the caliper body 1 near the front end is provided with a horizontally arranged guide groove. The bottom surface of the vertical plate end of the L-shaped plate 21 is fixed with a guide block 22 that is slidably connected to the guide groove on the top surface of the caliper body 1. The positioning mechanism 2 also includes a pad 25 fixed on the bottom surface of the horizontal plate end of the L-shaped plate 21, a pull rod 212 fixed on the outer wall of the moving plate 23 and in the shape of an L, and a spring 24 installed between the pad 25 on the same side and the moving plate 23 on the same side.

[0039] The guide groove on the top surface of the caliper body 1, the guide block 22 of the L-shaped plate 21, the pad 25 of the positioning mechanism 2, and the pull rod 212 make the L-shaped plate 21 slide more stably, the spring 24 be installed more securely, and the pull rod 212 facilitates the operation of the moving plate 23, greatly improving the convenience and stability of the adjustment of the positioning mechanism 2 and reducing operational obstacles.

[0040] In addition, a vertically arranged limiting groove is provided on the front surface of the vertical end of the L-shaped plate 21, and a connecting block 210 is fixed on the outer wall of the movable plate 23. A limiting block 211 is fixed on the outer wall of the connecting block 210 and is slidably connected to the limiting groove on the outer wall of the vertical end of the L-shaped plate 21 on the same side.

[0041] By using the vertical end limiting groove of the L-shaped plate 21, the connecting block 210 and the limiting block 211 of the moving plate 23, the moving plate 23 does not deviate when sliding along the L-shaped plate 21, ensuring the precise movement of subsequent components of the positioning mechanism 2, avoiding sliding misalignment that would lead to a poor pressing effect on the embroidery cloth, and ensuring reliable fixing of the embroidery cloth.

[0042] Furthermore, the longitudinal section shape of the guide groove on the top surface of the caliper body 1 is I-shaped, the shape of the guide block 22 is I-shaped to match the shape of the guide groove on the top surface of the caliper body 1, the shape of the upper limit groove on the outer wall of the vertical end of the L-shaped plate 21 is I-shaped, and the shape of the limit block 211 is I-shaped to match the shape of the upper limit groove on the outer wall of the vertical end of the L-shaped plate 21.

[0043] By using the guide groove of the I-shaped caliper body 1 and the guide block 22, and the limiting groove of the L-shaped plate 21 and the limiting block 211, the guide block 22 and the limiting block 211 do not detach when sliding, thereby strengthening the connection stability of the positioning mechanism 2 components, preventing the components from loosening during sliding, and ensuring the normal operation of the mechanism.

[0044] Specifically, the positioning mechanism 2 also includes a moving rod 26 fixed on the bottom surface of the moving plate 23 and in the shape of an L, a connecting rod 27 fixed on the bottom surface of the horizontal end of the moving rod 26 on the same side near the front end, the connecting rod 27 is located on the front side of the caliper body 1, and the bottom surface of the anti-slip plate 29 is provided with anti-slip texture. When the spring 24 is in its original length state, the positioning plate 28 and the anti-slip plate 29 are both located below the caliper body 1.

[0045] By using the L-shaped moving rod 26 of the moving plate 23, the anti-slip texture of the anti-slip plate 29, and the position of the positioning plate 28 and the anti-slip plate 29 when the spring 24 is at its original length, the connecting rod 27 is installed reasonably, the anti-slip plate 29 presses the embroidery cloth with greater friction, the embroidery cloth is fixed more firmly, and the ruler displacement is effectively avoided from affecting the alignment.

[0046] like Figures 1-2 , Figure 4 , Figures 8-10 As shown, it is worth noting that it also includes: two auxiliary alignment mechanisms 3, which are slidably connected to the bottom surface of the caliper body 1, for positioning the edges or key pattern nodes of the symmetrical pattern. The auxiliary alignment mechanism 3 includes an auxiliary alignment block 31 slidably connected to the bottom surface of the caliper body 1, and a screw 32 threadedly connected to the auxiliary alignment block 31. The front outer wall of the auxiliary alignment block 31 is provided with a through groove communicating with its inner cavity. Part of the screw 32 is located inside the through groove of the auxiliary alignment block 31 on the same side. The auxiliary alignment mechanism 3 also includes a fixing plate 35 fixed to the screw 32 and slidably connected to the auxiliary alignment block 31, and a friction plate 36 fixed on the front surface of the fixing plate 35 for positioning the auxiliary alignment block 31.

[0047] By setting two auxiliary alignment mechanisms 3, the edges or key pattern nodes of symmetrical patterns can be located.

[0048] It is worth noting that the bottom surface of the caliper body 1 is provided with a horizontally arranged sliding groove near the rear end. The auxiliary alignment block 31 is slidably connected to the sliding groove on the bottom surface of the caliper body 1. The bottom surface of the auxiliary alignment block 31 and the bottom surface of the caliper body 1 are on the same plane. Both the auxiliary alignment block 31 and the caliper body 1 are made of transparent acrylic material, and an auxiliary alignment line is provided at the middle position of the top surface of the auxiliary alignment block 31.

[0049] The sliding groove on the bottom of the caliper body 1, the auxiliary alignment block 31, the transparent material of the caliper body 1 and the auxiliary alignment block 31, and the alignment line of the auxiliary alignment block 31 make the auxiliary alignment block 31 slide smoothly. The transparent material makes it easy to observe the pattern, and the alignment line helps to accurately position and improve the alignment accuracy of symmetrical patterns.

[0050] It is worth emphasizing that a rectangular groove is provided on the rear surface of the caliper body 1, which is connected to the sliding groove on its bottom surface. The screw 32 passes through the rectangular groove on the rear surface of the caliper body 1 and extends to the rear side of the caliper body 1. Two movable grooves are provided on the inner bottom surface of the through groove on the front surface of the auxiliary alignment block 31. The auxiliary alignment mechanism 3 also includes a movable column 34 coaxially fixed on the front surface of the screw 32 and located inside the through groove on the front surface of the auxiliary alignment block 31, a movable block 37 fixed on the bottom surface of the fixing plate 35 and slidably connected to the two movable grooves inside the auxiliary alignment block 31, and a turntable 33 coaxially fixed on the rear surface of the screw 32. The movable column 34 is fixed on the rear surface of the fixing plate 35 on the same side.

[0051] The rectangular groove on the rear side of the caliper body 1, the screw 32, the moving groove of the auxiliary alignment block 31, the moving column 34, the moving block 37 and the turntable 33 make the screw 32 easy to rotate and can quickly drive the fixing plate 35 and the friction plate 36 to fix the auxiliary alignment block 31, making the positioning operation more efficient.

[0052] Furthermore, the longitudinal section shape of the groove on the bottom surface of the caliper body 1 is convex, the shape of the auxiliary alignment block 31 is convex and matches the shape of the groove on the bottom surface of the caliper body 1, the longitudinal section shape of the moving groove inside the auxiliary alignment block 31 is trapezoidal, and the shape of the moving block 37 is trapezoidal and matches the shape of the moving groove inside the auxiliary alignment block 31.

[0053] The sliding groove of the caliper body 1 with the convex shape and the auxiliary alignment block 31, and the moving groove and moving block 37 of the trapezoidal auxiliary alignment block 31, ensure that the auxiliary alignment block 31 and the moving block 37 do not detach or misalign when sliding, thereby enhancing the stability of the auxiliary alignment mechanism 3 and ensuring the positioning effect of the symmetrical pattern.

[0054] like Figure 1 , Figure 3As shown, more specifically, the zero mark of the scale line on the top surface of the caliper body 1 is located in the middle position. The unit of the scale line on the top surface of the caliper body 1 is millimeters. The top surface of the caliper body 1 is provided with an insertion hole. A fixed cylinder 11 corresponding to the position of the insertion hole and matching the size is fixed on the top surface of the caliper body 1. A positioning pin 12 that is slidably inserted into the fixed cylinder 11 is provided above the caliper body 1. A fixed plate 13 is fixed on the top surface of the rod of the positioning pin 12.

[0055] The device achieves precise measurement through the zero-gradient scale line on the top surface of the caliper body 1, the millimeter unit, the insertion hole, the fixing cylinder 11, the positioning pin 12, and the fixing plate 13. The positioning pin 12 can quickly fix the center point of the embroidery and can be pulled out, ensuring accurate positioning without affecting subsequent embroidery.

[0056] In this embodiment, during actual use, the positioning pin 12 on the top surface of the caliper body 1 is first inserted into the center point of the embroidery, and the center point is positioned in conjunction with the fixing cylinder 11. Then, the positioning pin 12 is pulled out to avoid interfering with the embroidery. Then, the lever 212 of the positioning mechanism 2 is pulled, which moves the moving plate 23 upward to compress the spring 24, and slides the L-shaped plate 21 along the guide groove of the caliper body 1 to a suitable position. The lever 212 is released, the spring 24 is reset, and the moving plate 23 is pushed downward, so that the anti-slip plate 29 at the bottom of the positioning plate 28 presses the embroidery cloth, thereby fixing the caliper.

[0057] Then, slide the auxiliary alignment block 31 of the auxiliary alignment mechanism 3 so that its top auxiliary alignment line is aligned with the edge or key node of the symmetrical pattern. Rotate the turntable 33 to drive the screw 32 to rotate, causing the fixed plate 35 to move forward, so that the friction plate 36 presses tightly against the auxiliary alignment block 31 to complete the positioning. Finally, with the help of the scale line on the top surface of the caliper body 1 centered on the zero mark, the size of the symmetrical pattern on both sides can be read to ensure the alignment accuracy and complete the alignment operation of the center line of the symmetrical pattern.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A caliper for aligning the center line of a symmetrical pattern in Yi embroidery, comprising a caliper body (1), characterized in that, The caliper body (1) has horizontally arranged scale lines on its top surface. The top surface of the caliper body (1) also has two positioning mechanisms (2) for pressing and limiting the embroidery fabric. Each positioning mechanism (2) includes an L-shaped plate (21) slidably connected to the top surface of the caliper body (1), a movable plate (23) slidably connected to the outer wall of the vertical end of the L-shaped plate (21), a spring (24) installed between the movable plate (23) and the horizontal end of the L-shaped plate (21), a connecting rod (27) fixed to the bottom surface of the movable plate (23), a positioning plate (28) fixed to the bottom surface of the connecting rod (27), and an anti-slip plate (29) installed on the bottom surface of the positioning plate (28). It also includes: Two auxiliary alignment mechanisms (3) are slidably connected to the bottom surface of the caliper body (1) for positioning the edge of the symmetrical pattern or key pattern node. The auxiliary alignment mechanism (3) includes an auxiliary alignment block (31) slidably connected to the bottom surface of the caliper body (1) and a screw (32) threadedly connected to the auxiliary alignment block (31). The front outer wall of the auxiliary alignment block (31) is provided with a through groove communicating with its inner cavity. Part of the screw (32) is located inside the through groove of the auxiliary alignment block (31) on the same side. The auxiliary alignment mechanism (3) also includes a fixing plate (35) fixed to the screw (32) and slidably connected to the auxiliary alignment block (31) and a friction plate (36) fixed on the front surface of the fixing plate (35) for positioning the auxiliary alignment block (31).

2. The center line alignment ruler for the symmetrical pattern of Yi embroidery according to claim 1, characterized in that: The top surface of the caliper body (1) near the front end is provided with a guide groove arranged horizontally. The bottom surface of the vertical plate end of the L-shaped plate (21) is fixed with a guide block (22) that is slidably connected to the guide groove on the top surface of the caliper body (1). The positioning mechanism (2) also includes a pad (25) fixed on the bottom surface of the horizontal plate end of the L-shaped plate (21), a pull rod (212) fixed on the outer wall of the moving plate (23) and shaped like an L, and the spring (24) is installed between the pad (25) on the same side and the moving plate (23) on the same side.

3. The center line alignment ruler for the symmetrical pattern of Yi embroidery according to claim 2, characterized in that: The front surface of the vertical end of the L-shaped plate (21) is provided with a vertically arranged limiting groove. A connecting block (210) is fixed on the outer wall of the movable plate (23), and a limiting block (211) is fixed on the outer wall of the connecting block (210) and is slidably connected to the limiting groove on the outer wall of the vertical end of the L-shaped plate (21) on the same side.

4. The center line alignment ruler for the symmetrical pattern of Yi embroidery according to claim 3, characterized in that: The longitudinal section shape of the guide groove on the top surface of the caliper body (1) is I-shaped. The shape of the guide block (22) is I-shaped and matches the shape of the guide groove on the top surface of the caliper body (1). The shape of the upper limit groove on the outer wall of the vertical plate end of the L-shaped plate (21) is I-shaped, and the shape of the limit block (211) is I-shaped and matches the shape of the upper limit groove on the outer wall of the vertical plate end of the L-shaped plate (21).

5. The center line alignment ruler for the symmetrical Yi embroidery pattern according to claim 1, characterized in that: The positioning mechanism (2) also includes a moving rod (26) fixed on the bottom surface of the moving plate (23) and in the shape of an L. The connecting rod (27) is fixed on the bottom surface of the horizontal bar end of the moving rod (26) on the same side, near the front end. The connecting rod (27) is located on the front side of the caliper body (1). The bottom surface of the anti-slip plate (29) is provided with anti-slip texture. When the spring (24) is in its original length state, the positioning plate (28) and the anti-slip plate (29) are both located below the caliper body (1).

6. The center line alignment ruler for the symmetrical pattern of Yi embroidery according to claim 1, characterized in that: The bottom surface of the caliper body (1) is provided with a horizontally arranged sliding groove near the rear end. The auxiliary alignment block (31) is slidably connected to the sliding groove on the bottom surface of the caliper body (1). The bottom surface of the auxiliary alignment block (31) and the bottom surface of the caliper body (1) are located on the same plane. Both the auxiliary alignment block (31) and the caliper body (1) are made of transparent acrylic material, and an auxiliary alignment line is provided at the middle position of the top surface of the auxiliary alignment block (31).

7. The center line alignment ruler for the symmetrical pattern of Yi embroidery according to claim 6, characterized in that: The rear surface of the caliper body (1) is provided with a rectangular groove that communicates with the sliding groove on its bottom surface. The screw (32) passes through the rectangular groove on the rear surface of the caliper body (1) and extends to the rear side of the caliper body (1). The inner bottom surface of the through groove on the front surface of the auxiliary alignment block (31) is provided with two moving grooves arranged in a front-to-back manner. The auxiliary alignment mechanism (3) also includes a moving column (34) coaxially fixed on the front surface of the screw (32) and located inside the through groove on the front surface of the auxiliary alignment block (31), a moving block (37) fixed on the bottom surface of the fixing plate (35) and slidably connected to the two moving grooves inside the auxiliary alignment block (31), and a turntable (33) coaxially fixed on the rear surface of the screw (32). The moving column (34) is fixed on the rear surface of the fixing plate (35) on the same side.

8. The center line alignment ruler for the symmetrical pattern of Yi embroidery according to claim 7, characterized in that: The longitudinal section shape of the groove on the bottom surface of the caliper body (1) is convex, the shape of the auxiliary alignment block (31) is convex and matches the shape of the groove on the bottom surface of the caliper body (1), the longitudinal section shape of the moving groove inside the auxiliary alignment block (31) is trapezoidal, and the shape of the moving block (37) is trapezoidal and matches the shape of the moving groove inside the auxiliary alignment block (31).

9. The center line alignment ruler for the symmetrical pattern of Yi embroidery according to claim 1, characterized in that: The zero mark of the scale line on the top surface of the caliper body (1) is located in the middle position. The unit of the scale line on the top surface of the caliper body (1) is millimeters. The top surface of the caliper body (1) is provided with an insertion hole. A fixed cylinder (11) corresponding to the position of the insertion hole on the top surface of the caliper body (1) and matching in size is fixed on the top surface of the caliper body (1). A positioning pin (12) that slides into the fixed cylinder (11) is provided above the caliper body (1). A fixed plate (13) is fixed on the top surface of the rod of the positioning pin (12).

Images