Sewing device based on L-shaped needle

Abstract

The utility model discloses an L-shaped sewing device, which belongs to the technical field of sewing and comprises a frame. The limiting block is arranged on the rack, and an arc-shaped groove is formed in the limiting block; the L-shaped needle group comprises a sliding shaft and an L-shaped needle, and the sliding shaft is in sliding connection with the arc-shaped groove; when the sliding shaft moves close to the fabric along the contour direction of the arc-shaped groove, the needle tip of the L-shaped needle gradually penetrates into the fabric; when the sliding shaft slides to the tail end of the arc-shaped groove, the needle point of the L-shaped needle is perpendicular to the plane of the fabric. The L-shaped needle is matched with the arc-shaped groove, so that the L-shaped needle can move on a curve path, and the L-shaped needle can penetrate through the thick fabric more smoothly and is suitable for the thick fabric.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing, in particular to a sewing device based on an L-shaped needle. Background Art

[0002] In today's fabric sewing industry, manual operations are not only inefficient but also difficult to ensure consistent finished products. To address these issues, the development of automated, simple sewing machines is urgent. While existing sewing machines use straight needles, which are suitable for thinner fabrics, their limitations become apparent when sewing thicker fabrics. Straight needles often have difficulty penetrating thick fabrics, resulting in unsatisfactory efficiency and results.

[0003] Therefore, exploring more efficient suturing solutions is crucial. The L-shaped needle, due to its unique design, demonstrates its advantages in sewing thick fabrics or multi-layered fabrics. Its structure enables it to penetrate thick fabrics more easily, reducing resistance and damage during penetration, thereby improving suturing quality and efficiency.

[0004] To fully exploit the potential of the L-shaped needle, sewing machine design must be adjusted and optimized accordingly. This means adapting the machine to the L-shaped needle's unique shape and motion to ensure smooth needle penetration and effective stitching in thick fabrics. This improvement allows new sewing machines to improve the efficiency of sewing thick fabrics. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0006] In view of the above problems and / or the problems existing in the prior art, the present utility model is proposed.

[0007] Therefore, the purpose of the present invention is to provide a sewing device based on an L-shaped needle, which can replace a straight needle to sew thick fabrics.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: an L-shaped sewing device, comprising a frame; a limit block, which is arranged on the frame and has an arc-shaped groove on the limit block; an L-shaped needle group, comprising a sliding shaft and an L-shaped needle, and the sliding shaft is slidably connected to the arc-shaped groove; when the sliding shaft moves closer to the fabric along the contour direction of the arc-shaped groove, the needle tip of the L-shaped needle gradually penetrates the fabric; and when the sliding shaft slides to the end of the arc-shaped groove, the needle tip of the L-shaped needle is perpendicular to the fabric plane.

[0009] As a preferred solution of the sewing device based on the L-shaped needle of the utility model, it also includes a reference plane, the central axis of the needle column of the L-shaped needle coincides with the reference plane, the needle tip is located on one side of the reference plane, and the center of the arc groove is located on the same side of the reference plane.

[0010] As a preferred solution of the sewing device based on the L-shaped needle of the present invention, the upper end point of the arc-shaped groove in the contour direction is located on the reference plane.

[0011] As a preferred solution of the sewing device based on the L-shaped needle of the present invention, the angle between the lines connecting the upper end point and the lower end point in the contour direction of the arcuate groove and the center of the arcuate groove is 90°.

[0012] As a preferred solution of the sewing device based on L-shaped needles of the present invention, the L-shaped needle group further includes a pressure rod and a connecting block, the pressure rod passes through the connecting block, and the sliding shaft is arranged on the connecting block.

[0013] As a preferred solution of the sewing device based on L-shaped needles of the utility model, the L-shaped needle group also includes an intermediate block and a track shaft, the intermediate block is fixedly connected to the pressure rod, the track shaft is horizontally arranged, and a sliding block is slidably installed on the track shaft, and a connecting key is provided between the sliding block and the intermediate block, and the two ends of the connecting key are respectively rotatably connected to the sliding block and the intermediate block.

[0014] As a preferred solution of the sewing device based on L-shaped needles of the utility model, the L-shaped needle group further includes a clamping block, which is fixedly connected to the sliding block. Two clamping blocks are provided, and the L-shaped needle is arranged between the two clamping blocks, and the two clamping blocks cooperate with each other and tighten the L-shaped needle.

[0015] As a preferred solution of the sewing device based on the L-shaped needle of the utility model, in which: during the process of the needle tip of the L-shaped needle gradually penetrating the fabric, the intermediate block can drive the two clamping blocks through the connecting key and the sliding block to release the tightening state of the L-shaped needle, and the L-shaped needle can move axially relative to the clamping block.

[0016] The beneficial effects of the utility model are as follows: the L-shaped needle is used in combination with the arc-shaped groove to enable the L-shaped needle to move on a curved path, so that the L-shaped needle can penetrate thick fabrics more smoothly and adapt to thick fabrics. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0018] Figure 1 It is a front view of the initial state of the L-shaped sewing device.

[0019] Figure 2 This is an axonometric view of the initial state of the L-shaped sewing device.

[0020] Figure 3 This is a left view of the initial state of the L-shaped sewing device. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, cross-sectional views of device structures may be partially enlarged and not to scale when describing embodiments of the present invention. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0024] Furthermore, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0025] Example 1

[0026] Reference Figures 1 to 3, which is the first embodiment of the present utility model, provides an L-shaped sewing device, including a frame 100, a limit block 200 and an L-shaped needle group 300; the frame 100 is used to install the limit block 200 and the L-shaped needle group 300; the limit block 200 is used to adjust the movement trajectory of the L-shaped needle column 300 and adapt to the special shape of the L-shaped needle; the L-shaped needle column is used for sewing thick fabrics.

[0027] Specifically, the frame 100 includes a back panel 101, a side panel 102 and a bottom panel 103. The back panel 101 and the side panel 102 are vertically arranged, the bottom panel 103 is horizontally arranged, and there are two side panels 102, which are respectively located on the left and right sides of the back panel 101. The bottom panel 103 is arranged at the bottom of the back panel 101 and is connected to the two side panels 102; an accommodating space is formed between the back panel 101, the side panel 102 and the bottom panel 103, and the L-shaped needle group 300 is located in the accommodating space.

[0028] Preferably, two limit blocks 200 are provided, and the two limit blocks 200 are respectively set on the two side plates 102 by bolts, and the projections of the two limit blocks 200 on the side plates 102 coincide with each other. An arc groove 201 is opened on the limit block 200, and the arc groove 210 converts the vertical movement of the L-shaped needle group 300 into an arc motion.

[0029] Preferably, the L-shaped needle assembly 300 includes a sliding shaft 301 and an L-shaped needle 302 , wherein the sliding shaft 301 is slidably connected to the arcuate groove 201 ; the vertical movement of the L-shaped needle assembly 300 is converted into an arcuate movement through the sliding fit between the sliding shaft 301 and the arcuate groove 201 .

[0030] Preferably, the angle between the upper end point and the lower end point in the contour direction of the arc groove 201 and the line connecting the center of the arc groove 201 is 90°, which is adapted to the special shape of the L-shaped needle 302. When the sliding shaft 301 slides to the end of the arc groove 201, the needle tip 302a of the L-shaped needle 302 is just transformed from a horizontal state to a state perpendicular to the fabric plane.

[0031] When the sliding shaft 301 moves closer to the fabric along the contour direction of the arc groove 201, the needle tip 302a of the L-shaped needle 302 gradually penetrates the fabric; and when the sliding shaft 301 slides to the end of the arc groove 201, the needle tip 302a of the L-shaped needle 302 is perpendicular to the fabric plane.

[0032] Example 2

[0033] See Figures 1 to 3, which is the second embodiment of the present utility model. This embodiment is basically the same as the first embodiment, except that the angles between the upper and lower end points of the arc groove 201 in the contour direction and the line connecting the center of the arc groove 201 are 95°. When the sliding shaft 301 slides to the end of the arc groove 201, the needle tip 302a of the L-shaped needle 302 can also complete the transformation from a horizontal state to a state perpendicular to the fabric plane and pierce the fabric.

[0034] Example 3

[0035] See Figures 1 to 3 , which is the third embodiment of the present utility model, and this embodiment is based on embodiment 1 or embodiment 2.

[0036] Specifically, it also includes a reference plane A, the central axis of the needle column 302b of the L-shaped needle 302 coincides with the reference plane A, the needle tip 302a is located on one side of the reference plane A, and the center of the arc groove 201 and 302a are located on the same side of the reference plane A; this setting is to make the arc movement of the L-shaped needle group 300 and the arc movement of the needle tip 302a of the L-shaped needle 302 in the same direction and synchronously.

[0037] Preferably, the upper end point of the arc-shaped groove 201 in the contour direction is located on the reference plane A, thereby maximizing the utilization space of the arc-shaped groove 201 .

[0038] Preferably, the L-shaped needle group 300 also includes a pressure rod 303 and a connecting block 304, the pressure rod 303 is arranged vertically, the connecting block 304 is arranged horizontally, the pressure rod 303 passes through the connecting block 304, and the pressure rod 303 is threadedly connected to the connecting block 304; there are two sliding shafts 301, and the two sliding shafts 301 are respectively arranged on the left and right sides of the connecting block 304, and the sliding shafts 301 are threadedly connected to the connecting block 304.

[0039] Preferably, the L-shaped needle group 300 also includes an intermediate block 305 and a track shaft 306. The intermediate block 305 is connected to the pressure rod 303 by a threaded connection, and the intermediate block 305 and the pressure rod 303 move synchronously; the track shaft 306 is horizontally arranged, and a sliding block 307 is slidably installed on the track shaft 306. A connecting key 308 is provided between the sliding block 307 and the intermediate block 305, and the two ends of the connecting key 308 are rotatably connected to the sliding block 307 and the intermediate block 305 respectively; the sliding block 307 can slide left and right on the track shaft 306, and the sliding block 307 can also be connected through the connecting key 308, so that the intermediate block 305 and the sliding block 307 move synchronously.

[0040] Preferably, the L-shaped needle assembly 300 further includes a clamping block 309, which is fixedly connected to a sliding block 307. The sliding block 307 can drive the clamping block 309 to slide left and right. Two clamping blocks 309 are provided, and the L-shaped needle 302 is positioned between the two clamping blocks 309. The two clamping blocks 309 cooperate to tighten the L-shaped needle 302. Initially, the L-shaped needle 302 is tightened. When the two clamping blocks 309 move apart, the L-shaped needle 302 is relaxed, allowing axial movement.

[0041] Preferably, in the process of the needle tip of the L-shaped needle 302 gradually penetrating into the fabric, when the resistance to the needle tip penetration becomes greater and the penetration is blocked, the middle block 305 can drive the two clamping blocks 309 through the connecting key 308 and the sliding block 307 to release the tightening state of the L-shaped needle 302, and the L-shaped needle 302 can move axially relative to the clamping block 309. When the L-shaped needle 302 is relaxed, it is easier to pass through the fabric. If the L-shaped needle 302 is tightened, it may be more difficult to pass through due to friction with the fabric, especially when the fabric is thicker or denser; if the L-shaped needle 302 tries to pass through thick fabric in a tightened state, it may bend or break due to resistance. By loosening the L-shaped needle 302 first, this risk can be reduced; and different fabrics and sewing conditions may require different needle tightness. By designing a tightening block 309 to loosen the L-shaped needle 302, the machine can adapt to a wider range of sewing conditions. In addition, loosening the L-shaped needle 302 can provide a mechanism that allows the operator to adjust the tightness of the L-shaped needle 302 according to the thickness of the fabric and the desired sewing effect.

[0042] Example 4

[0043] See Figures 1 to 3 , which is the fourth embodiment of the present invention, and is based on the above embodiment. This embodiment provides a sewing method.

[0044] S100: The bottom plate 103 at the bottom of the frame 100 is in contact with the surface of the fabric;

[0045] S200: The L-shaped needle assembly 300 moves toward the fabric, and the needle head of the L-shaped needle 302 gradually penetrates the fabric. At this time, the clamping block 309 is in a state of tightening the L-shaped needle 302;

[0046] S201: When the resistance of the needle head of the L-shaped needle 302 in the fabric becomes greater, the connecting key 308 and the sliding block 307 drive the two clamping blocks 309 to release the tightening state of the L-shaped needle 302;

[0047] S202: The L-shaped needle assembly 300 continues to move toward the fabric, and the needle head of the L-shaped needle 302 continues to penetrate the fabric;

[0048] S300: When the sliding shaft 301 slides to the end of the arc-shaped groove 201, the needle tip 302a of the L-shaped needle 302 pierces the fabric and is perpendicular to the fabric plane;

[0049] S400: Lift the pressing rod 303, the clamping block 309 re-tightens the L-shaped needle 302, and drives the L-shaped needle 302 to be pulled out from the fabric, completing one sewing operation;

[0050] S500: Repeat the above sewing process.

[0051] Based on the above, the beneficial effects of the present invention are:

[0052] 1. By adopting L-shaped needles instead of existing straight needles, thick fabrics can be sewn.

[0053] 2. First, the design of the curved groove 201 allows the sliding shaft 301 to move non-linearly within it. This allows the sliding shaft 301 to move along a smooth, curved path rather than a simple straight line. This motion helps the L-shaped needle 302 penetrate the fabric in a manner more consistent with its shape. Since the puncture path of the L-shaped needle 302 is not a completely straight line, the curved groove 201 provides the necessary guidance, ensuring that the L-shaped needle 302 penetrates the fabric at the optimal angle and force.

[0054] Furthermore, the design of the arcuate groove 201 helps reduce friction and resistance during the penetration process of the L-shaped needle 302. The curved path allows the L-shaped needle 302 to penetrate thick fabrics more smoothly, reducing direct friction between the L-shaped needle 302 and the fabric, thereby reducing the risk of needle breakage and improving sewing efficiency.

[0055] In summary, the design of the arcuate groove 201 not only perfectly matches the shape and motion trajectory of the L-shaped needle 302, but also provides the necessary technical support for achieving efficient, precise and durable sewing operations.

[0056] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also an equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0057] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0058] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A sewing device based on an L-shaped needle, characterized in that: include: Rack(100); A limit block (200) is provided on the frame (100), and an arc-shaped groove (201) is provided on the limit block (200); An L-shaped needle assembly (300) comprises a sliding shaft (301) and an L-shaped needle (302), wherein the sliding shaft (301) is slidably connected to the arc-shaped groove (201); When the sliding shaft (301) moves toward the fabric along the contour direction of the arc-shaped groove (201), the needle tip (302a) of the L-shaped needle (302) gradually penetrates the fabric; and when the sliding shaft (301) slides to the end of the arc-shaped groove (201), the needle tip (302a) of the L-shaped needle (302) is perpendicular to the fabric plane.

2. The sewing device based on an L-shaped needle according to claim 1, characterized in that: It also includes a reference plane (A), the central axis of the needle column (302b) of the L-shaped needle (302) coincides with the reference plane (A), the needle tip (302a) is located on one side of the reference plane (A), and the center of the arc-shaped groove (201) and the needle tip (302a) are located on the same side of the reference plane (A).

3. The sewing device based on an L-shaped needle according to claim 1, characterized in that: The upper end point of the arc-shaped groove (201) in the contour direction is located on the reference plane (A).

4. The sewing device based on an L-shaped needle according to claim 2 or 3, characterized in that: The angle between the lines connecting the upper end point and the lower end point in the contour direction of the arc-shaped groove (201) and the center of the arc-shaped groove (201) is 90°.

5. The sewing device based on an L-shaped needle according to claim 4, characterized in that: The L-shaped needle assembly (300) further comprises a pressing rod (303) and a connecting block (304), wherein the pressing rod (303) passes through the connecting block (304), and the sliding shaft (301) is arranged on the connecting block (304).

6. The sewing device based on an L-shaped needle according to claim 5, characterized in that: The L-shaped needle assembly (300) further comprises an intermediate block (305) and a track shaft (306), wherein the intermediate block (305) is fixedly connected to the pressure rod (303), the track shaft (306) is arranged horizontally, a sliding block (307) is slidably mounted on the track shaft (306), a connecting key (308) is provided between the sliding block (307) and the intermediate block (305), and the two ends of the connecting key (308) are rotatably connected to the sliding block (307) and the intermediate block (305), respectively.

7. The sewing device based on an L-shaped needle according to claim 6, characterized in that: The L-shaped needle assembly (300) further comprises a clamping block (309), wherein the clamping block (309) is fixedly connected to the sliding block (307), two clamping blocks (309) are provided, and the L-shaped needle (302) is arranged between the two clamping blocks (309), and the two clamping blocks (309) cooperate with each other and tighten the L-shaped needle (302).

8. The sewing device based on an L-shaped needle according to claim 7, characterized in that: When the needle tip of the L-shaped needle (302) gradually penetrates the fabric, the intermediate block (305) can drive the two clamping blocks (309) to release the tightening state of the L-shaped needle (302) through the connecting key (308) and the sliding block (307), and the L-shaped needle (302) can move axially relative to the clamping blocks (309).

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