Needle plate structure of sewing equipment
By setting a detachable guide plate on the needle plate of the sewing equipment, the problems of low efficiency and unstable quality in surface stitching are solved, achieving fast, beautiful and economical sewing results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2026-04-14
AI Technical Summary
Current surface stitching operations rely on manual labor, resulting in low efficiency, easily crooked stitches, and unreliable product quality.
A detachable guide plate is installed on the needle plate structure of the sewing equipment. It is connected to the needle plate body through a connector. The guide plate extends along the length of the needle plate and forms a specific distance with the needle hole. A guide ramp is set at the guide end to realize the guiding function.
The guide plate helps prevent the visible stitch from going astray, ensuring the straightness and aesthetics of the stitches, and enabling fast and stable sewing. The guide plate can also be replaced as needed, saving costs.
Smart Images
Figure CN224119255U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sewing machine technology, and in particular to a needle plate structure for sewing equipment. Background Technology
[0002] In garment manufacturing, topstitching is commonly performed. For example, topstitching is done on the placket after the concealed stitching is completed (the placket needs to be turned inside out and ironed before topstitching). Alternatively, some trouser seams require a topstitch in the concealed groove to maintain the shape. Currently, topstitching mainly relies on manual labor. This requires repeated work of sorting the garment pieces, leading to frequent pauses and long processing times, resulting in reduced efficiency. Furthermore, the stitches are prone to crookedness, and the straightness, evenness, and aesthetics of the stitches cannot be guaranteed. Summary of the Invention
[0003] In view of the above situation and to overcome the defects of the prior art, the purpose of this utility model is to provide a needle plate structure for sewing equipment, which solves the technical problems of low efficiency and unreliable product quality in existing surface-stitch sewing operations.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] A needle plate structure for a sewing device includes: a needle plate body having mounting holes, tooth grooves, and needle holes; and a guide plate disposed on the upper surface of the needle plate body via a connector. The guide plate is disposed parallel to the front and rear tooth grooves along the length direction of the needle plate body, protrudes from the upper surface of the needle plate body and forms a height difference with the upper surface of the needle plate body, and a 0.5mm-1.5mm gap is formed between the guide end of the guide plate and the needle hole.
[0006] This utility model's needle plate structure incorporates a detachable guide plate on the needle plate body. On one hand, during the sewing process, the guide plate guides the stitches, preventing deviation and ensuring the finished thread remains in a straight line, resulting in a more aesthetically pleasing appearance and enabling fast and consistent quality sewing. On the other hand, the guide plate is detachable via a connector; when replacement is needed, only the guide plate itself needs to be replaced, effectively saving costs and simplifying the replacement process.
[0007] Optionally, a 1mm ± 0.2mm gap is formed between the guide end of the guide piece and the pinhole.
[0008] Optionally, the height H of the guide plate is 2-3 mm.
[0009] Optionally, the thickness T of the guide piece is 2-3 mm.
[0010] Optionally, the guide end of the guide piece is provided with a guide ramp, the high end of the guide ramp smoothly transitions with the upper surface of the guide piece, and the low end extends toward the pinhole.
[0011] Optionally, the connector is detachably connected to the needle plate body.
[0012] Optionally, the connector includes: a connecting piece, the upper surface of which is connected to the lower surface of the guide piece; wherein, both ends of the connecting piece extend toward both sides of the guide piece to form extension portions, the extension portions having through holes, and the connecting piece being connected to the needle plate body by a first fastener passing through the through holes.
[0013] Optionally, the needle plate body has a first mounting groove for accommodating the connecting piece.
[0014] Optionally, the length and / or width of the first mounting groove are greater than that of the connecting piece. The first mounting groove allows for adjustment of the connecting piece's mounting position, enabling the guide piece to be adjusted according to different usage requirements, further increasing the applicability of the pin plate structure.
[0015] Optionally, there are at least two connecting pieces, which are respectively disposed on the left and right sides of the guide piece along its length.
[0016] Optionally, a connecting piece is provided on the side of the guide piece away from the pin hole, and a positioning post is provided at the bottom of the other side of the guide piece. The needle plate body is provided with a positioning hole that matches the positioning post.
[0017] Optionally, the needle plate body is provided with a second mounting groove, and a pinhole mounting plate is detachably disposed in the second mounting groove. The pinhole mounting plate is provided with pinholes. Different pinholes can be replaced by disassembling and replacing the pinhole mounting plate, avoiding the need to replace the entire needle plate. The operation is simple and convenient, which helps to save costs.
[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0019] This utility model's needle plate structure incorporates a detachable guide plate on the needle plate body. On one hand, during sewing, the guide plate guides the stitching, preventing deviation and ensuring the finished thread remains in a straight line, resulting in a more aesthetically pleasing appearance and enabling fast and consistent quality stitching. On the other hand, the guide plate is detachable via a connector; when replacement is needed, only the guide plate needs to be replaced, effectively saving costs and simplifying the replacement process. Furthermore, different needle holes can be replaced by disassembling and replacing the needle hole mounting plate, and the guide plate can be replaced or adjusted according to different usage requirements by replacing the connecting plate or adjusting its installation position. This needle plate structure has a wide range of applications, avoiding the need to replace the entire needle plate, thus saving costs and offering simple and convenient operation. Attached Figure Description
[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of one embodiment of the needle plate structure of this utility model.
[0022] Figure 2 This is a top view of one embodiment of the needle plate structure of this utility model.
[0023] Figure 3 This is a side view of one embodiment of the needle plate structure of this utility model.
[0024] Figure 4 This is a schematic diagram of the structure of Example 3.
[0025] Figure 5 This is a top view of Example 3.
[0026] Figure 6 This is a side view of Example 3.
[0027] Figure label:
[0028] 1. Needle plate body; 11. Mounting hole; 12. Tooth groove; 13. Needle hole; 14. First mounting groove; 15. Positioning hole;
[0029] 2. Guide plate; 2a. Guide end; 21. Guide ramp;
[0030] 3. Connecting component; 31. Connecting piece; 32. First fastener; 33. Positioning pin;
[0031] 4. Pinhole mounting plate; 5. Second fastener. Detailed Implementation
[0032] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the embodiments of this utility model application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.
[0033] In the description of the embodiments of this utility model application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", "end", "side" etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, are only for the convenience of describing the embodiments of this utility model application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this utility model application.
[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model application, "multiple" means two or more, unless otherwise explicitly specified.
[0035] In the embodiments of this utility model application, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model application according to the specific circumstances.
[0036] In the embodiments of this utility model application, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0037] The following disclosure provides many different implementations or examples for carrying out different structures of the embodiments of this utility model application. To simplify the disclosure of the embodiments of this utility model application, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of this utility model application. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of this utility model application; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.
[0038] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0039] Example 1
[0040] like Figures 1-3 As shown in the figure, the present utility model application provides a needle plate structure for a sewing device, including: a needle plate body 1, a guide piece 2, and a connector 3.
[0041] The needle plate body 1 is provided with mounting holes 11 for fixed installation, tooth grooves 12 for feeding the feed dog, and needle holes 13 located between the front and rear tooth grooves 12 for the needle to pass through.
[0042] The guide plate 2 is mounted on the upper surface of the needle plate body 1 via the connector 3. The guide plate 2 extends along the length of the needle plate body 1, that is, it extends along the X-axis of the needle plate body 1, and the needle plate body 1 is parallel to the front and rear tooth grooves 12. The guide plate 2 protrudes from the upper surface of the needle plate body 1, and its working surface forms a height difference with the upper surface of the needle plate body 1. The guide end 2a of the guide plate 2 forms a gap of 0.5-1.5mm with the needle hole 13.
[0043] Preferably, a 1mm ± 0.2mm gap is formed between the guide end 2a of the guide piece 2 and the pinhole 13.
[0044] Optionally, the guide piece 2 coincides with the central axis of the pinhole 13.
[0045] Optionally, the height H of the guide piece 2 is 2-3mm, and correspondingly, the height difference between the guide piece 2 and the needle plate body 1 is 2-3mm.
[0046] Optionally, the thickness T of the guide piece 2 is 2-3 mm.
[0047] Optionally, the guide end 2a of the guide piece 2 is provided with a guide ramp 21. The guide ramp 21 is inclined from top to bottom in the direction of the pinhole, that is, the high end of the guide ramp 21 smoothly transitions with the upper surface of the guide piece 2, and the low end extends in the direction of the pinhole 13.
[0048] In this implementation scenario, the needle plate 1 is mounted on a sewing device (such as a sewing machine or flatbed sewing machine). The placket piece or similar item to be sewn with topstitching is placed against the guide plate 2. During sewing, the guide plate 2 provides guidance, preventing deviation and keeping the topstitching in a straight line, resulting in a more aesthetically pleasing appearance and achieving fast and consistent quality topstitching. In other implementation scenarios, it can also be used to sew pre-sewn trouser seams, etc.
[0049] In one embodiment, the guide piece 2 is mounted on the upper surface of the needle plate body 1 via a detachable connector 3. By detachably mounting the guide piece 2 onto the needle plate body 1, it can be temporarily removed during use to achieve free-curve sewing, or different needs can be met by replacing different guide pieces. This provides a wide range of applications, and during operation, it is not necessary to replace the entire needle plate; only the guide piece 2 needs to be replaced, saving costs and offering convenience. The specific dimensions of the guide piece 2 and the setting of the guide slope prevent it from obstructing sewing during guidance.
[0050] Example 2
[0051] Based on Example 1, continue to refer to Figure 1-3 As shown, the connector 3 includes a connecting piece 31 and a first fastener 32.
[0052] The upper surface of the connecting piece 31 is connected to the lower surface of the guide piece 2, and both ends of the connecting piece 31 extend towards both sides of the guide piece 2 to form extensions, i.e.: Reference Figure 2 As shown, the guide piece 2 is horizontally positioned along the X-axis, while the connecting piece 31 is positioned along the Y-axis, forming a perpendicular structure with the guide piece 2. Both extensions have through holes, and the connecting piece 31 is connected and fixed to the needle plate body 1 via a first fastener 32 passing through the through hole. Extending and fixing the connecting piece 31 to both ends of the guide piece 2 improves the stability of the guide piece installation.
[0053] Optionally, the needle plate body 1 is provided with a connecting hole corresponding to the through hole. In use, the first fastener 32 passes through the through hole and connects with the connecting hole, thereby fixing the connecting piece 31 on the needle plate body 1.
[0054] Optionally, the needle plate body 1 has a first mounting groove for accommodating the connecting piece 31. Optionally, a connecting hole is formed in the first mounting groove. In use, after the connecting piece 31 is placed in the first mounting groove, its upper surface is flush with the upper surface of the needle plate body 1. Then, the first fastener 32 passes through the through hole and connects to the connecting hole to connect the connecting piece 31 and the needle plate body 1. Of course, the connection and fixation can also be achieved by the first fastener 32 abutting against the first mounting groove.
[0055] In this implementation scenario, there are at least two connecting pieces 31, respectively located on the left and right sides of the guide piece 2 along its length. Figure 1 and Figure 2 As shown, the guide piece 2 is connected to the needle plate body 1 by two connecting pieces 31, which helps to improve the stability of the guide piece 2 installation.
[0056] In another implementation scenario, the connecting piece 31 is a single piece. This connecting piece 31 is located on the side of the guide piece 2 furthest from the pinhole 13. A positioning post is located on the bottom of the other side of the guide piece 2. The needle plate body 1 has a positioning hole that matches the positioning post. Therefore, in this implementation scenario, the connecting piece 3 also includes a positioning post connected to the guide piece 2. In use, the positioning post is inserted into the positioning hole, and then the connecting piece 31 on the other side is connected to the needle plate body 1, making the operation more convenient and faster.
[0057] Example 3
[0058] like Figures 4-6 As shown in the figure, this utility model application provides a needle plate structure for a sewing device. Based on embodiment 1 or embodiment 2, in this embodiment, a second mounting groove is further provided on the needle plate body 1, and a needle hole mounting plate 4 is detachably disposed in the second mounting groove. The needle hole mounting plate 4 has needle holes 13. In use, when it is necessary to replace different needle holes 13, the different needle holes 13 can be replaced by disassembling and replacing the needle hole mounting plate 4, avoiding the need to replace the entire needle plate. The operation is simple and convenient, which helps to save costs.
[0059] As an implementation scenario, in this scenario, the cross-section of the pinhole mounting plate 4 is T-shaped, and the second mounting groove is adapted to the pinhole mounting plate 4. That is, the second mounting groove has a mounting step that supports the upper part of the pinhole mounting plate 4. The upper part of the pinhole mounting plate 4 is provided with a threaded hole, and the step of the second mounting groove is provided with a connecting hole. During installation, the pinhole mounting plate 4 is fixed in the second mounting groove by passing the second fastener 5 through the threaded hole and the connecting hole.
[0060] Optionally, both the first fastener 32 and the second fastener 5 can be screws.
[0061] In one embodiment, the needle plate body 1 has a first mounting groove 14 for accommodating the connecting piece 31. The length and / or width of the first mounting groove 14 are greater than the length and width of the connecting piece 31. In use, the position of the guide piece 2 can be adjusted by fixing the connecting piece 31 at any position in the first mounting groove 14. When it is necessary to adjust the distance between the guide end 2a of the guide piece 2 and the needle hole 13, the connecting piece 31 is moved along the X-axis to the designated position and then fixed by the first fastener 32. When it is necessary to adjust the relative position of the guide piece 2 and the needle hole 13, the connecting piece 31 is moved along the Y-axis to the designated position and then fixed by the first fastener 32. Adjusting the position of the guide piece 2 can improve the applicability of the needle plate. For example, adjusting the distance between the guide end 2a and the needle hole 13 can adapt to different fabric thicknesses.
[0062] In one implementation scenario, when two connecting pieces 31 are used, there are also two corresponding first mounting slots 14.
[0063] In another implementation scenario, when there is only one connecting piece 31, and the bottom of the guide piece 2 on the side away from the connecting piece 31 is provided with a positioning post 33, refer to Figures 4-6 The needle plate body 1 has multiple positioning holes 15 that are adapted to the positioning pins 33. In use, when it is necessary to adjust the position of the connecting piece 31, the positioning pins 33 can be inserted into different positioning holes, which is simple and convenient to operate.
[0064] It should be noted that the dimensions of the needle plate body 1, the guide plate 2, and the connector 3 in the accompanying drawings of this utility model are all schematic (especially the thickness), and the positions of the holes and slots are also schematic. They are only used to express the concept of this technical solution and do not involve the limitation of the specific positions and sizes in the actual embodiments.
[0065] Any aspects not described in detail in this embodiment are techniques known in the art.
[0066] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A needle plate structure for a sewing device, characterized in that, include: The needle plate body is provided with mounting holes, tooth grooves and needle holes; A guide plate is disposed on the upper surface of the needle plate body via a connector. The guide plate is disposed parallel to the front and rear tooth grooves along the length direction of the needle plate body. The guide plate protrudes from the upper surface of the needle plate body and forms a height difference with the upper surface of the needle plate body. A 0.5mm-1.5mm gap is formed between the guide end of the guide plate and the needle hole. The connector is detachably connected to the needle plate body.
2. The needle plate structure according to claim 1, characterized in that, The guide end of the guide piece forms a gap of 1mm ± 0.2mm with the pinhole.
3. The needle plate structure according to claim 1, characterized in that: The height H of the guide plate is 2-3mm; And / or, the thickness T of the guide piece is 2-3 mm.
4. The needle plate structure according to claim 1, characterized in that, The guide plate has a guide ramp at its guide end. The high end of the guide ramp smoothly transitions to the upper surface of the guide plate, and the low end extends toward the pinhole.
5. The needle plate structure according to claim 1, characterized in that, The connector includes: The connecting piece has its upper surface connected to the lower surface of the guide piece; The connecting piece extends from both ends toward the sides of the guide piece to form an extension portion, and the extension portion has a through hole. The connecting piece is connected to the needle plate body through a first fastener passing through the through hole.
6. The needle plate structure according to claim 5, characterized in that, The needle plate body has a first mounting groove for accommodating the connecting piece.
7. The needle plate structure according to claim 6, characterized in that, The length and / or width of the first mounting groove are greater than the connecting piece.
8. The needle plate structure according to claim 5, characterized in that: There are at least two connecting pieces, which are respectively disposed on the left and right sides of the guide piece along its length. or, A connecting piece is provided on the side of the guide plate away from the pin hole, and a positioning post is provided at the bottom of the other side of the guide plate. The needle plate body is provided with a positioning hole that matches the positioning post.
9. The needle plate structure according to claim 1, characterized in that, The needle plate body is provided with a second mounting groove, and a needle hole mounting plate is detachably provided in the second mounting groove. The needle hole mounting plate is provided with needle holes.