Sewing device and sewing method based on L-shaped needle

Abstract

The invention discloses an L-shaped sewing device and a sewing method, and belongs to the technical field of sewing. The L-shaped sewing device comprises a rack; 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 invention relates to the technical field of sewing, in particular to a sewing device and a sewing method based on an L-shaped needle. Background Art

[0002] In today's fabric sewing field, manual operation is not only inefficient, but also difficult to ensure the consistency of the finished product. In order to solve these problems, it is particularly urgent to develop an automated simple sewing machine. Although the existing sewing machines use straight needles, which are suitable for processing thinner fabrics, the limitations of straight needles are obvious when facing thicker fabrics. It is often difficult for straight needles to pierce thick fabrics, and the efficiency and effect are not satisfactory.

[0003] Therefore, it is crucial to explore more efficient suturing solutions. Due to its unique design, the L-type needle shows its advantages in sewing thick fabrics or multi-layer fabrics. The structure of the L-type needle enables it to penetrate thick fabrics more easily, reducing resistance and damage during penetration, and improving the quality and efficiency of suturing.

[0004] In order to fully exploit the potential of the L-shaped needle, the design of the sewing machine must be adjusted and optimized accordingly. This means that the machine needs to adapt to the special shape and movement trajectory of the L-shaped needle to ensure smooth penetration and effective sewing of the needle in thick fabrics. Through improvements, the new sewing machine can improve the efficiency of sewing thick fabrics. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot 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 invention is proposed.

[0007] Therefore, a first object of the present invention is to provide a sewing device based on an L-shaped needle that 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 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; 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 present invention, 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 arc-shaped groove and the center of the arc-shaped 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 present invention, 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, a sliding block is slidably installed on the track shaft, a connecting key is provided between the sliding block and the intermediate block, and both ends of the connecting key are rotatably connected to the sliding block and the intermediate block respectively.

[0014] As a preferred solution of the sewing device based on L-shaped needle of the present invention, wherein: the L-shaped needle group also includes a clamping block, the clamping block is fixedly connected to the sliding block, two clamping blocks are provided, the L-shaped needle is arranged between the two clamping blocks, and the two clamping blocks cooperate and tighten the L-shaped needle.

[0015] As a preferred solution of the sewing device based on the L-shaped needle of the present invention, in which: when the needle tip of the L-shaped needle gradually penetrates into the fabric, the middle block can drive the two clamping blocks to release the tightening state of the L-shaped needle through the connecting key and the sliding block, and the L-shaped needle can move axially relative to the clamping block.

[0016] A second object of the present invention is to provide a sewing method which can avoid the breakage of the L needle and sew thick fabrics.

[0017] In order to solve the above technical problems, the present invention provides the following technical solutions: a sewing method, comprising the above sewing device, and the bottom of the frame is in contact with the surface of the fabric; the L-shaped needle group moves in a direction close to the fabric, and the needle head of the L-shaped needle gradually penetrates into the fabric, and at this time the clamping block is in a state of tightening the L-shaped needle; when the sliding shaft slides to the end of the arc groove, the needle tip of the L-shaped needle penetrates the fabric and is perpendicular to the fabric plane; the pressure rod is lifted, the clamping block tightens the L-shaped needle again, and drives the L-shaped needle to be pulled out of the fabric, completing one sewing; and the above sewing process is repeated.

[0018] As a preferred embodiment of the sewing method of the present invention, when the resistance encountered by the needle head of the L-shaped needle in the fabric becomes larger, the connecting key and the sliding block drive the two clamping blocks to release the tightening state of the L-shaped needle; and the L-shaped needle group continues to move toward the direction approaching the fabric, and the needle head of the L-shaped needle continues to penetrate the fabric.

[0019] The beneficial effects of the present invention 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

[0020] 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 ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0021] Figure 1 It is a front view of the initial state of the L-shaped sewing device.

[0022] Figure 2 This is an axonometric view of the initial state of the L-shaped sewing device.

[0023] Figure 3 It is a left view of the initial state of the L-shaped sewing device. DETAILED DESCRIPTION

[0024] 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 in conjunction with the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and 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.

[0026] Secondly, the present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0027] Furthermore, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in 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.

[0028] Example 1

[0029] Reference Figure 1 to Figure 3 , which is the first embodiment of the present invention, and this embodiment 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 to sew thick fabrics.

[0030] 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 both vertically arranged, the bottom panel 103 is horizontally arranged, two side panels 102 are provided, and the two side panels 102 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.

[0031] 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 overlap. 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.

[0032] Preferably, the L-shaped needle assembly 300 includes a sliding shaft 301 and an L-shaped needle 302 , and the sliding shaft 301 is slidably connected to the arc groove 201 ; the vertical movement of the L-shaped needle assembly 300 is converted into an arc movement through the sliding cooperation between the sliding shaft 301 and the arc groove 201 .

[0033] 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.

[0034] When the sliding shaft 301 moves toward 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.

[0035] Example 2

[0036] See also Figure 1 to Figure 3 , which is the second embodiment of the present invention, is basically the same as the first embodiment, except that the angles between the upper end point and the lower end point of the arc groove 201 in the contour direction and the line connecting the center of the arc groove 201 are 95°, 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 can also complete the action of transforming from a horizontal state to a state perpendicular to the fabric plane and piercing the fabric.

[0037] Example 3

[0038] See also Figure 1 to Figure 3 , which is the third embodiment of the present invention, and is based on embodiment 1 or embodiment 2.

[0039] 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 arrangement 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.

[0040] Preferably, the upper end point of the arc-shaped groove 201 in the contour direction is located on the reference plane A, so as to maximize the utilization space of the arc-shaped groove 201.

[0041] Preferably, the L-shaped needle group 300 also includes a pressure rod 303 and a connecting block 304, the pressure rod 303 is vertically arranged, the connecting block 304 is horizontally arranged, 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, the two sliding shafts 301 are respectively arranged on the left and right sides of the connecting block 304, and the sliding shaft 301 is threadedly connected to the connecting block 304.

[0042] 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 threads, 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, and 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.

[0043] Preferably, the L-shaped needle assembly 300 further includes a clamping block 309, which is fixedly connected to the sliding block 307, and the sliding block 307 can drive the clamping block 309 to slide left and right; there are two clamping blocks 309, and the L-shaped needle 302 is arranged between the two clamping blocks 309, and the two clamping blocks 309 cooperate and tighten the L-shaped needle 302. In the initial state, the L-shaped needle 302 is in a tightened state, and when the two clamping blocks 309 move away from each other, the L-shaped needle 302 is in a relaxed state, and the L-shaped needle 302 can move axially.

[0044] Preferably, in the process of the needle tip of the L-shaped needle 302 gradually penetrating into the fabric, when the resistance to the penetration of the needle tip 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.

[0045] Example 4

[0046] See also Figure 1 to Figure 3 , which is the fourth embodiment of the present invention, and is based on the above embodiment. This embodiment provides a sewing method.

[0047] S100: The bottom plate 103 at the bottom of the frame 100 is in contact with the surface of the fabric;

[0048] S200: the L-shaped needle group 302 moves towards the direction close to the fabric, and the needle head of the L-shaped needle 302 gradually penetrates into the fabric. At this time, the clamping block 309 is in a state of tightening the L-shaped needle 302;

[0049] S201: When the resistance of the needle head of the L-shaped needle 302 in the fabric becomes larger, 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;

[0050] S202: the L-shaped needle group 300 continues to move toward the direction close to the fabric, and the needle head of the L-shaped needle 302 continues to pierce the fabric;

[0051] 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;

[0052] S400: lift the pressure 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;

[0053] S500: Repeat the above sewing process.

[0054] Based on the above, the beneficial effects of the present invention are:

[0055] 1. By adopting L-shaped needles instead of existing straight needles, thick fabrics can be sewn.

[0056] 2. First, the design of the arc groove 201 allows the sliding shaft 301 to perform non-linear motion therein. This design enables the sliding shaft 301 to move on a smooth curved path rather than a simple straight line. Such a motion trajectory helps the L-shaped needle 302 to penetrate the fabric in a manner that is more consistent with its shape. Since the puncture path of the L-shaped needle 302 is not completely straight, the arc groove 201 provides the necessary guidance to ensure that the L-shaped needle 302 can penetrate the fabric at the best angle and strength.

[0057] Furthermore, the design of the arc groove 201 helps to reduce the friction and resistance of the L-shaped needle 302 during the puncture process. The curved path allows the L-shaped needle 302 to penetrate thick fabrics more smoothly, reducing the direct friction between the L-shaped needle 302 and the fabric, thereby reducing the risk of needle breakage and improving sewing efficiency.

[0058] In summary, the design of the arc groove 201 not only perfectly matches the shape and movement trajectory of the L-shaped needle 302, but also provides the necessary technical support for achieving efficient, precise and durable sewing operations.

[0059] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. 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.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0060] Additionally, in order to provide a concise description of exemplary 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.

[0061] It will be appreciated that in the development of any actual implementation, 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 be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0062] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. 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, which should all 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 arranged on the frame (100), and an arc-shaped groove (201) is formed 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 into 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 as claimed in 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 groove (201) and (302a) are located on the same side of the reference plane (A).

3. The sewing device based on 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 included angles of the lines connecting the upper end point and the lower end point of the arc-shaped groove (201) in the contour direction and the center of the arc-shaped groove (201) are 90°.

5. The sewing device based on 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 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 arranged between the sliding block (307) and the intermediate block (305), and 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 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, 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 L-shaped needle according to claim 7, characterized in that: When the needle tip of the L-shaped needle (302) gradually penetrates into 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).

9. A sewing method, characterized in that: include: The sewing device according to any one of claims 6 to 8; and The bottom of the frame (100) is in contact with the fabric surface; The L-shaped needle group (300) moves towards the direction approaching the fabric, and the needle head of the L-shaped needle (302) gradually penetrates into the fabric. At this time, the clamping block (309) is in a state of tightening the L-shaped needle (302); 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; The pressing rod (303) is lifted, and 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; Repeat the above sewing process.

10. The sewing method according to claim 9, characterized in that: When the resistance encountered by the needle head of the L-shaped needle (302) in the fabric increases, 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); and the L-shaped needle group (300) continues to move in the direction approaching the fabric, and the needle head of the L-shaped needle (302) continues to penetrate the fabric.

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