Positioning tool for electric embroidery machine

Abstract

The utility model relates to a positioning tool for an electric embroidering machine, which comprises an outer frame, a first groove, a second groove, a first connecting rod, a second connecting rod, a first connecting rod, a second connecting rod and a second connecting rod, and is characterized in that the outer frame is arranged on a table top of the electric embroidering machine; the middle frame is arranged in the first groove, the size of the first groove is larger than that of the middle frame so that the middle frame and the outer frame can move relatively, and a second groove is formed in the upper surface of the middle frame; one end of the connecting plate is fixed to the upper surface of the middle frame, and the other end of the connecting plate is located above the outer frame; the locking assembly is used for locking the outer frame and the connecting plate; and the inner frame is arranged in the second groove, the inner frame is attached to the side wall of the second groove, a cross-shaped positioning line is arranged on the upper surface of the inner frame, and a fixing structure used for fixing a cutting piece is arranged on the inner frame. And the cross-shaped positioning line on the inner frame realizes high-precision correction with a needle point of an electric embroidery machine table, so that the embroidery precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of embroidery equipment, in particular to a positioning tool for an electric embroidery machine. Background Art

[0002] With the continuous improvement of embroidery technology, higher and higher requirements are put forward for the quality and efficiency of embroidery. Although electric embroidery machines can be used for automation, it is still difficult to complete some products with high requirements for refinement through mechanical equipment. At present, the pieces to be sewn are fixed on the bottom, generally by manually operating a flat-bed sewing machine to sew by positioning with a ruler, but this operation has many problems:

[0003] 1. Low production efficiency: Using a ruler for positioning requires the operator to constantly adjust and confirm the position of the cut piece, which may increase the production cycle and reduce production efficiency.

[0004] 2. Limited efficiency and accuracy: The operator's technical level and experience may affect the accuracy of sewing, especially in mass production, the operator's fatigue and concentration may lead to inconsistent sewing results. Utility Model Content

[0005] Therefore, it is necessary to provide a positioning tool for an electric embroidery machine to solve the problems raised in the background technology.

[0006] To achieve the above purpose, this embodiment provides a positioning tool for an electric embroidery machine, comprising:

[0007] An outer frame, the outer frame is used to be arranged on the table of the electric embroidery machine, and the upper surface of the outer frame is provided with a first groove;

[0008] a middle frame, the middle frame being arranged in the first groove, the size of the first groove being larger than the size of the middle frame, so that the middle frame and the outer frame can move relative to each other, and a second groove being arranged on the upper surface of the middle frame;

[0009] A connecting plate, one end of which is fixed to the upper surface of the middle frame, and the other end of which is located above the outer frame;

[0010] A locking assembly, the locking assembly being used to lock the outer frame and the connecting plate; and

[0011] An inner frame is arranged in the second groove, the inner frame fits the side wall of the second groove, a cross positioning line is arranged on the upper surface of the inner frame, and a fixing structure for fixing the cut piece is arranged on the inner frame.

[0012] Furthermore, the locking assembly includes multiple locking units, each of which includes a stud and a knob. The connecting plate is provided with multiple slots extending vertically therethrough, one slot corresponds to one stud, the bottom of the stud is provided on the outer frame, the stud passes through the slot and extends to the top of the connecting plate, and the knob is threadedly connected to the stud at a position above the connecting plate.

[0013] Furthermore, there are two connecting plates, and the two connecting plates are located on both sides of the middle frame in the length direction.

[0014] Furthermore, the locking assembly also includes a magnetic structure, and the magnetic structure is used to magnetically adsorb the middle frame and the connecting plate.

[0015] Furthermore, the magnetic structure includes a fixed plate, a first magnetic part and a second magnetic part. The fixed plate and the connecting plate are rotatably connected. The fixed plate can be flipped over to cover the upper surface of the middle frame. The fixed plate is provided with a first magnetic part, and the middle frame is provided with a second magnetic part. The first magnetic part and the second magnetic part are magnetically adsorbed to achieve locking of the middle frame, the fixed plate and the connecting plate.

[0016] Furthermore, the fixing plate is adhered to the connecting plate by means of an adhesive tape.

[0017] Furthermore, a side wall of the second groove in contact with the outer frame is provided with a limiting structure for preventing the middle frame and the inner frame from shifting.

[0018] Furthermore, a limiting groove is provided on the side wall of the second groove, and a limiting block is provided on the side wall of the outer frame. The limiting block can be inserted into the limiting groove, and the limiting groove and the limiting block form the limiting structure.

[0019] Furthermore, the fixing structure is a plurality of cylinders that can be inserted into the upper surface of the inner frame.

[0020] Furthermore, a plurality of cylinders fix a plurality of cut pieces on the inner frame.

[0021] Different from the prior art, the above technical solution has the following beneficial effects:

[0022] The user can easily move the middle frame as needed, adjust its position in the first slot, and quickly fix it with the locking assembly. This design makes the use of the positioning tooling very simple and convenient. Through the movable adjustment position and correction of the middle frame, combined with the cross positioning line on the inner frame, high-precision correction with the needle tip of the electric embroidery machine is achieved, greatly improving the accuracy of embroidery. Through precise positioning and correction, the error and rework rate in the embroidery process are reduced, thereby improving production efficiency. Because the positioning tooling is highly flexible and adjustable, it is suitable for pieces of different sizes and shapes, and can meet a variety of embroidery needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a top view of the outer frame in this embodiment;

[0024] Figure 2 is a top view of the outer frame and the middle frame in this embodiment;

[0025] Figure 3 is a top view of the connecting plate in this embodiment;

[0026] Figure 4 is a cross-sectional view of the outer frame, the middle frame and the connecting plate in this embodiment;

[0027] Figure 5 is a top view of the inner frame in this embodiment;

[0028] Figure 6 is a cross-sectional view of the outer frame, middle frame, connecting plate, inner frame and fixing plate in this embodiment;

[0029] Figure 7 for Figure 4 A magnified view of the middle A area;

[0030] Figure 8 A cross-sectional view of the outer frame, middle frame, connecting plate and fixing plate in this embodiment.

[0031] Description of reference numerals:

[0032] 1. Outer frame;

[0033] 11. First slot;

[0034] 2. Middle frame;

[0035] 21. Second slot;

[0036] 22. Limiting groove;

[0037] 3. Connecting plate;

[0038] 31. Slotting;

[0039] 4. Inner frame;

[0040] 41. Limit block;

[0041] 42. Cross positioning line;

[0042] 5. Locking assembly;

[0043] 51. Studs;

[0044] 52. Fixed plate;

[0045] 53. a first magnetic member;

[0046] 54. A second magnetic member;

[0047] 6. Fixed structure. DETAILED DESCRIPTION

[0048] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0049] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0050] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0051] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" logical relationship.

[0052] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0053] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0054] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0055] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0056] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "install", "connect", "connect", "fix", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0057] See also Figures 1 to 8 This embodiment provides a positioning tool for an electric embroidery machine, including:

[0058] A first groove 11, the first groove 11 is used to be arranged on the table of the electric embroidery machine, and the upper surface of the first groove 11 is provided with a first groove;

[0059] The middle frame 2 is arranged in the first groove. The size of the first groove is larger than that of the middle frame 2, so that the middle frame 2 and the first groove 11 can move relative to each other. The upper surface of the middle frame 2 is provided with a second groove 21;

[0060] A connecting plate 3, one end of which is fixed to the upper surface of the middle frame 2, and the other end of which is located above the first groove 11;

[0061] A locking assembly 5, which is used to lock the first groove 11 with the connecting plate 3; and

[0062] The inner frame 4 is arranged in the second groove 21, the inner frame 4 fits the side wall of the second groove 21, the upper surface of the inner frame 4 is provided with a cross positioning line 42, and the inner frame 4 is provided with a fixing structure 6 for fixing the cut piece (to be embroidered).

[0063] See also Figure 5 and Figure 6 The crosshairs 42 include the X-axis (along Figure 5 The horizontal direction) and the Y axis (along Figure 5 In the longitudinal direction, the center point has an accuracy of 0.05mm with the starting and ending points of the electric embroidery needle column, and the error with the needle tip correction of the electric embroidery machine is 0.1mm.

[0064] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 , the design of the connecting plate 3 forms a stable structural relationship between the middle frame 2 and the first slot 11, and also provides an installation basis for the locking assembly 5. The locking assembly 5 is installed between the connecting plate 3 and the first slot 11. When the position of the middle frame 2 needs to be fixed, the middle frame 2 can be firmly locked with the first slot 11 by operating the locking assembly 5 to prevent displacement during the embroidery process. Before the embroidery starts, the user can move the middle frame 2 as needed to adjust its position in the first slot. Once a suitable position is found, the middle frame 2 can be locked with the first slot 11 by the locking assembly 5. The inner frame 4 is accurately placed in the second slot 21 and fits the side wall of the second slot 21. The upper surface of the inner frame 4 is provided with clear cross positioning lines 42, which are crucial for accurate positioning during the embroidery process. The cross positioning lines 42 are corrected with the starting and starting points of the electric embroidery needle so that the cut piece coincides with the set position, so that the electric embroidery machine can accurately embroider the required pattern outline according to the preset program. In addition, a fixing structure 6 for fixing the cut piece is provided on the inner frame 4 to ensure that the cut piece can remain stable during the embroidery process.

[0065] The positioning tooling of the present application has the following beneficial effects:

[0066] The user can easily move the middle frame 2 as needed, adjust its position in the first slot, and quickly fix it with the locking assembly 5. This design makes the use of the positioning tool very simple and convenient. Through the movable adjustment position and correction of the middle frame 2, combined with the cross positioning line 42 on the inner frame 4, high-precision correction with the needle tip of the electric embroidery machine is achieved, greatly improving the accuracy of embroidery. Through precise positioning and correction, the error and rework rate in the embroidery process are reduced, thereby improving production efficiency. Since the positioning tool is highly flexible and adjustable, it is suitable for pieces of different sizes and shapes, and can meet a variety of embroidery needs.

[0067] See also Figure 4 and Figure 7 In this embodiment, the locking assembly 5 includes a plurality of locking units, and the locking units include studs 51 and knobs. The connecting plate 3 is provided with a plurality of slots 31 extending vertically, and one slot 31 corresponds to one stud 51. The bottom of the stud 51 is provided on the first slot 11, and the stud 51 passes through the slot 31 and extends above the connecting plate 3. The knob is threadedly connected to the portion of the stud 51 located above the connecting plate 3. Optionally, the diameter of the stud 51 is 3 mm and the length is 20 mm, and the knob can be a horn nut matching the stud 51. In some embodiments, the stud 51 can be fixed on the table, and a corresponding slot can also be provided on the first slot 11, that is, the slot on the first slot 11 is located directly below the slot of the connecting plate 3, and the two are opposite to each other.

[0068] When the position of the middle frame 2 needs to be fixed, the user rotates the knob to move the knob downward along the thread of the stud 51. Since the stud 51 is fixed on the first slot 11, the downward movement of the knob will press the connecting plate 3, and then apply downward pressure to the middle frame 2 through the connecting plate 3, pressing the connecting plate 3 downward. When the position of the middle frame 2 needs to be adjusted, the user only needs to rotate the knob in the opposite direction to move the knob upward to reduce the pressure on the connecting plate 3. At this time, since there is a certain gap between the middle frame 2 and the first slot, the user can easily move the middle frame 2 to a new position. The middle frame 2 can move in four directions: forward, backward, left, and right. The slot allows the middle frame 2 to achieve the above-mentioned movement. After the movement is completed, rotate the knob again to fix the middle frame 2 in the new position.

[0069] The user can lock and unlock the middle frame 2 by a simple rotation action without using complicated tools or performing tedious operations.

[0070] See also Figure 4 In this embodiment, there are two connecting plates 3, and the two connecting plates 3 are located on both sides of the length direction of the middle frame 2. This design ensures the stability of the middle frame 2 in the length direction and prevents it from shaking or shifting left and right during the embroidery process. The shapes of the two connecting plates 3 can be the same or different.

[0071] In this embodiment, the slot 31 extends along the length direction of the connecting plate 3 , and the connecting plate 3 extends along the width direction of the middle frame 2 .

[0072] See also Figure 3 and Figure 4 In this embodiment, there are four slots 31 on one connecting plate 3, and there are eight slots in total on two connecting plates 3. Each slot 31 corresponds to a locking unit formed by a stud 51 and a knob. This design makes the locking of the middle frame 2 more uniform and stable, because multiple locking units can apply pressure from different positions of the middle frame 2, effectively preventing any slight movement of the middle frame 2 during the embroidery process.

[0073] In this embodiment, the positioning tool further includes a magnetic structure, which is used to lock the middle frame 2 and the connecting plate 3. The design of the magnetic structure is to further ensure the stable connection between the middle frame 2 and the connecting plate 3, so as to improve the stability of the entire positioning tool and the embroidery accuracy.

[0074] See also Figure 2 and Figure 6 In this embodiment, the magnetic structure includes a fixed plate 52, a first magnetic member 53 and a second magnetic member 54. The fixed plate 52 and the connecting plate 3 are rotatably connected. The fixed plate 52 can be flipped and covered on the upper surface of the middle frame 2. The fixed plate 52 is provided with a first magnetic member 53, and the middle frame 2 is provided with a second magnetic member 54. The first magnetic member 53 and the second magnetic member 54 are magnetically adsorbed to achieve locking of the middle frame 2, the fixed plate 52 and the connecting plate 3. Optionally, the first magnetic member 53 or the second magnetic member 54 is a strong magnet with a diameter of 10 mm and a thickness of 2 mm.

[0075] A first magnetic member 53 is provided on the fixing plate 52, and these magnetic members can be magnets or other magnetic components. Correspondingly, a second magnetic member 54 is provided at the corresponding position of the middle frame 2, and they can also be magnets or other magnetic components. When the fixing plate 52 is flipped and covered on the middle frame 2, a magnetic adsorption force will be generated between the first magnetic member 53 and the second magnetic member 54, thereby realizing the firm locking of the middle frame 2 and the connecting plate 3. When working, the user first places the middle frame 2 in the first slot 11 and preliminarily adjusts its position. Then, by flipping the fixing plate 52, it covers the upper surface of the middle frame 2. In this process, the first magnetic member 53 and the second magnetic member 54 gradually approach each other. When the distance between the two is close enough, the magnetic adsorption force between them will play a role, and the fixing plate 52 will be firmly adsorbed on the middle frame 2, thereby realizing the locking of the middle frame 2, the fixing plate 52 and the connecting plate 3. This locking method is simple and efficient, and does not require complex mechanical structures or operating steps. At the same time, due to the existence of magnetic adsorption force, the connection between the middle frame 2, the fixing plate 52 and the connecting plate 3 is very firm, which can effectively prevent displacement or shaking during the embroidery process.

[0076] In this embodiment, the fixed plate 52 is attached to the connecting plate 3 by means of an adhesive tape. The user only needs to attach the adhesive tape to the corresponding positions of the fixed plate 52 and the connecting plate 3 to achieve a firm connection between the two. As an adhesive, the working principle of the adhesive tape mainly depends on its viscosity and adhesion. When the adhesive tape is attached to the corresponding positions of the fixed plate 52 and the connecting plate 3, its viscosity can ensure a close fit between the two. In some embodiments, a hinge can be provided to achieve a rotatable connection between the fixed plate 52 and the connecting plate 3.

[0077] In this embodiment, the side wall of the second groove 21 in contact with the first groove 11 is provided with a limiting structure for preventing the displacement of the middle frame 2 and the inner frame 4. These limiting structures form a physical barrier, thereby limiting the movement of the middle frame 2 and the inner frame 4 in a specific direction.

[0078] See also Figure 2 , Figure 5 and Figure 6 In this embodiment, a limiting groove 22 is provided on the side wall of the second groove 21, and a limiting block 41 is provided on the side wall of the first groove 11. The limiting block 41 can be inserted into the limiting groove 22, and the limiting groove and the limiting block 41 form a limiting structure. Figure 2 It is shown that the front and rear side walls of the second slot 21 of the middle frame 2 are respectively provided with trapezoidal limiting slots. Figure 5 It is shown that trapezoidal limiting blocks 41 are respectively provided on the front and rear side walls of the inner frame 4 .

[0079] When assembling the positioning tool, first place the middle frame 2 on the inner frame 4, and align the first slot 11 with the corresponding positions of the middle frame 2 and the second slot 21. Then, insert the limit block 41 into the limit slot to tightly connect the first slot 11 with the middle frame 2 and the second slot 21. Due to the interaction between the limit block 41 and the limit slot, the movement of the middle frame 2 and the inner frame 4 during the embroidery process is effectively restricted, thereby ensuring the stability of the positioning tool.

[0080] See also Figure 5 In this embodiment, the fixing structure 6 is a plurality of cylinders that can be inserted into the upper surface of the inner frame 4. The material of the inner frame 4 that can be inserted by the cylinders, such as a fiber resin board, has a thickness of 1.5 mm and a hardness of 95 HBa, which provides a good foundation for fixing the cylinders.

[0081] See also Figure 5 In this embodiment, the cylinder is a hanging needle, and multiple cylinders fix multiple cut pieces on the inner frame 4, so that multiple cut pieces can be operated at the same time. There are multiple electric embroidery machines, and multiple electric embroidery machines share a table, that is, multiple electric embroidery machines are arranged in sequence along the length direction of the table, and a positioning tool is correspondingly provided on the lower table of each electric embroidery machine.

[0082] See also Figure 5 In this embodiment, the sheet structure fixed by the fixing structure 6 is a cut piece, and the electric embroidery contour is that the upper and lower layers of cut pieces are fixed and locked at the same time with a 1.5mm margin on the edge of the upper and lower layers of cut pieces, and the edge of the upper and lower layers of cut pieces is precisely fixed and locked without displacement. According to this scheme, the electric embroidery fixing method after the cut pieces are manually pasted on the machine according to the positioning line by spraying self-adhesive glue is broken, and the accurate positioning electric embroidery 1.5-3mm contour error is improved. This innovation realizes refined quality, improved efficiency, intelligent tooling, reduced cost processes, and environmental protection and energy saving.

[0083] In this embodiment, the first groove 11 can pass through the upper and lower sides of the outer frame 1, that is, the first groove 11 is recessed from the upper surface of the outer frame 1 to the lower surface, and the structure is as follows: Figure 1 The second groove 21 can pass through the upper and lower sides of the middle frame 2, that is, the second groove 21 is recessed from the upper surface of the middle frame 2 to the lower surface, and the structure is as follows Figure 2 described.

[0084] It should be noted that although the above embodiments have been described in this article, this does not limit the scope of patent protection of the utility model. Therefore, based on the innovative concept of the utility model, changes and modifications to the embodiments described in this article, or equivalent structural or equivalent process changes made using the contents of the utility model specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields are all included in the scope of protection of the utility model patent.

Claims

1. A positioning tool for an electric embroidery machine, It is characterized in that include: An outer frame, the outer frame is used to be arranged on the table of the electric embroidery machine, and the upper surface of the outer frame is provided with a first groove; a middle frame, the middle frame being arranged in the first groove, the size of the first groove being larger than the size of the middle frame, so that the middle frame and the outer frame can move relative to each other, and a second groove being arranged on the upper surface of the middle frame; A connecting plate, one end of which is fixed to the upper surface of the middle frame, and the other end of which is located above the outer frame; A locking assembly, the locking assembly being used to lock the outer frame and the connecting plate; as well as An inner frame is arranged in the second groove, the inner frame fits the side wall of the second groove, a cross positioning line is arranged on the upper surface of the inner frame, and a fixing structure for fixing the cut piece is arranged on the inner frame.

2. The positioning tool according to claim 1, It is characterized in that The locking assembly includes a plurality of locking units, each of which includes a stud and a knob. The connecting plate is provided with a plurality of slots extending vertically therethrough, one slot corresponding to one stud. The bottom of the stud is provided on the outer frame, the stud passes through the slot and extends above the connecting plate, and the knob is threadedly connected to the stud at a position above the connecting plate.

3. The positioning tool according to claim 2, It is characterized in that There are two connecting plates, and the two connecting plates are located on both sides of the middle frame in the length direction.

4. The positioning tool according to claim 1, It is characterized in that The locking assembly also includes a magnetic structure, and the magnetic structure is used to magnetically adsorb the middle frame and the connecting plate.

5. The positioning tool according to claim 4, It is characterized in that The magnetic structure includes a fixed plate, a first magnetic part and a second magnetic part. The fixed plate and the connecting plate are rotatably connected. The fixed plate can be flipped to cover the upper surface of the middle frame. The fixed plate is provided with a first magnetic part, and the middle frame is provided with a second magnetic part. The first magnetic part and the second magnetic part are magnetically adsorbed to achieve locking of the middle frame, the fixed plate and the connecting plate.

6. The positioning tool according to claim 5, It is characterized in that The fixing plate is adhered to the connecting plate by means of an adhesive tape.

7. The positioning tool according to claim 1, It is characterized in that A side wall of the second groove in contact with the outer frame is provided with a limiting structure for preventing the middle frame and the inner frame from shifting.

8. The positioning tool according to claim 7, It is characterized in that The side wall of the second groove is provided with a limiting groove, and the side wall of the outer frame is provided with a limiting block, the limiting block can be inserted into the limiting groove, and the limiting groove and the limiting block form the limiting structure.

9. The positioning tool according to claim 1, It is characterized in that The fixing structure is a plurality of cylinders which can be inserted into the upper surface of the inner frame.

10. The positioning tool according to claim 9, It is characterized in that A plurality of cylinders fix a plurality of cut pieces on the inner frame.

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