Tangent lockstitch sewing equipment

Abstract

The utility model discloses thread cutting and flat sewing equipment which comprises a machine body and a rack, the machine body is installed on the rack, and a hole for a sewing thread to pass through is formed in the portion, below a sewing needle of the machine body, of the rack; the fixing structure is arranged on the bottom surface of the rack and is used for fixing a sewing thread; the thread cutting structure is installed on the bottom face of the rack and located on one side of the fixing structure, the thread cutting structure comprises a thread cutting part, and the thread cutting part is connected with the fixing structure in a sliding mode and used for cutting a sewing thread fixed by the fixing structure. The sewing thread is fixedly clamped through the fixing structure, it can be guaranteed that the position of the sewing thread cannot deviate due to the shearing action of the cutter in the thread cutting process, and the shearing quality is effectively improved.

Description

Technical Field

[0001] This application belongs to the technical field of garment sewing equipment, and in particular relates to a tangential sewing equipment. Background Technology

[0002] The clutch motor of a flatbed sewing machine is mounted on the bottom of its table. Different sewing speeds can be obtained by controlling the tightness of the clutch by pressing the pedal. After sewing a single piece of material, the thread attached to that material needs to be cut before sewing a new piece of material. In the past, both automatic and manual flatbed sewing machines required manual cutting with scissors. During operation, because the distance between the thread connection point of the flatbed sewing machine's telescopic end and the machine table is relatively short, manual cutting often requires alignment. Furthermore, improper operation during the cutting process can cause the scissors to tilt, and there is also the possibility of the thread getting stuck in the scissor blades, resulting in poor operation convenience.

[0003] To address the aforementioned issues, Chinese Patent Application No. CN202321311738.0 discloses a thread-cutting mechanism for a flat sewing machine. The mechanism includes a flat sewing machine, a long plate fixed to one end of the bottom of its telescopic table, a mounting plate fixed to the long plate, and multiple gears fixed to the side of the mounting plate away from the machine. An auxiliary housing is located on the side of the mounting plate away from the telescopic table, with a first connecting rod rotatably connected between its front and rear inner walls. A drive gear adapted to the gears is fixed to the outer side of the first connecting rod, with one end of the drive gear near the mounting plate extending out of the auxiliary housing. A fixed shear plate is fixed inside the auxiliary housing, and a movable shear plate is mounted on the fixed shear plate. This mechanism achieves automatic thread cutting through the cooperation of the fixed and movable shear plates, eliminating the need for manual alignment by holding scissors.

[0004] Although the above solution can achieve the effect of automatically aligning and cutting the suture, it does not cut and fix the suture. As a result, the suture may shift in position due to the cutting action of the blade, which reduces the cutting quality. Utility Model Content

[0005] In view of this, the main objective of this application is to provide a tangential flat sewing device capable of cutting and fixing the suture thread.

[0006] The technical solution adopted in this application is as follows: a tangential flat seam device, comprising,

[0007] The machine body and the stand are provided, wherein the machine body is mounted on the stand, and the machine body has a hole on the stand below the sewing needle for the sewing thread to pass through;

[0008] A fixing structure is provided on the bottom surface of the frame for fixing the stitches;

[0009] A tangent structure is installed on the bottom surface of the frame and located on one side of the fixed structure. The tangent structure includes a tangent part, which is slidably connected to the fixed structure and is used to cut the sutures fixed by the fixed structure.

[0010] Furthermore, the fixing structure includes a first clamping part and a second clamping part located on both sides of the suture, and a clamping cavity for clamping the suture is formed between the first clamping part and the second clamping part.

[0011] Furthermore, the first clamping part is provided with a groove for inserting the tangent part.

[0012] Furthermore, the second clamping part is provided with a groove for the tangent part to pass through, and the tangent part and the second clamping part are slidably connected through the groove. The tangent part of the tangent structure cuts the suture in the clamping cavity.

[0013] Furthermore, the tangential structure also includes a drive unit mounted on the bottom surface of the frame, and the tangential unit is connected to the output end of the drive unit.

[0014] Furthermore, the tangent part includes a connecting rod and a cutter. The connecting rod is connected to the driving part, and the cutter is connected to the end of the connecting rod. Guide blocks are provided on both the upper and lower sides of the connecting rod, and guide grooves for sliding of the guide blocks are provided on both the upper and lower sides of the slide groove on the second clamping part.

[0015] Furthermore, the second clamping part has a protrusion on its end face near the first clamping part, and correspondingly, the first clamping part has a groove on its end face near the second clamping part that mates with the protrusion; wherein the contact surface between the protrusion and the groove is an arc-shaped surface.

[0016] Furthermore, a T-shaped block is connected to the upper end of the second clamping part, and a T-shaped groove matching the T-shaped block is provided on the bottom surface of the frame; the length of the T-shaped block is less than the length of the T-shaped groove.

[0017] Compared with the prior art, the present application has the following advantages: by fixing and clamping the suture with a fixed structure, it can be ensured that the suture will not shift in position due to the cutting action of the tool during the cutting process, which effectively improves the cutting quality. Attached Figure Description

[0018] The following figures are for illustrative purposes only and are not intended to limit the scope of this application, wherein:

[0019] Figure 1 This is a three-dimensional schematic diagram of the present application;

[0020] Figure 2This is a three-dimensional schematic diagram of the fixed structure and tangent structure in this application;

[0021] Figure 3 for Figure 2 A three-dimensional schematic diagram of the exploded structure;

[0022] Figure 4 for Figure 2 A schematic diagram of the cross-sectional structure;

[0023] Figure 5 for Figure 4 Enlarged view of part A in the image;

[0024] Figure 6 for Figure 4 Enlarged view of part B in the image.

[0025] Reference numerals: a. stitch; 10. body; 11. frame; 12. hole; 13. fixing structure; 14. tangential structure; 15. first clamping part; 16. second clamping part; 17. clamping cavity; 18. groove; 19. slide; 20. drive part; 21. tangential part; 21a. connecting rod; 21b. cutter; 22. guide block; 23. guide groove; 24. protrusion; 25. groove; 26. T-block; 27. T-slot. Detailed Implementation

[0026] To make the objectives, technical solutions, design methods, and advantages of this application clearer, the following detailed description, in conjunction with the accompanying drawings, provides specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application.

[0027] This application relates to a tangential flat sewing device, comprising a machine body 10 and a frame 11, a fixing structure 13, and a tangential structure 14; see details below. Figures 1-6 As shown, the machine body 10 is mounted on the frame 11, and the machine body 10 has a hole 12 on the frame 11 below the needle for the thread to pass through; the fixing structure 13 is disposed on the bottom surface of the frame 11 for fixing the thread a; the cutting structure 14 is mounted on the bottom surface of the frame 11 and located on one side of the fixing structure 13, the cutting structure 14 includes a cutting part 21, the cutting part 21 is slidably connected to the fixing structure 13, and is used to cut the thread a fixed by the fixing structure 13.

[0028] In the above, when it is necessary to cut the suture a, the suture is clamped and fixed by the fixing structure 13, and then the suture is cut by the cutting structure 14. Since the suture is fixed in advance, the cutting position will not change due to external force, thus effectively improving the cutting quality.

[0029] As one embodiment of this application, please refer to the following: Figures 2-6 As shown, the fixing structure 13 includes a first clamping part 15 and a second clamping part 16 located on both sides of the suture a. A clamping cavity 17 for clamping the suture a is formed between the first clamping part 15 and the second clamping part 16. The first clamping part 15 is provided with a groove 18 for inserting the tangent part 21.

[0030] In the above, the first clamping part 15 can be fixed to the bottom surface of the frame 11, and the second clamping part 16 can be slidably connected to the bottom surface of the frame 11. A pushing device can be provided on the second clamping part 16 so that the thread is always in the clamping cavity 17 formed by the two clamping parts, so as to facilitate the thread cutting operation. At the same time, a rubber pad can be provided on the connecting end face of the two clamping parts. When clamping the thread, the friction between the rubber pads can achieve a better clamping effect on the thread.

[0031] As one embodiment of this application, please refer to the following: Figures 2-6 As shown, the second clamping part 16 is provided with a sliding groove 19 for the tangent part 21 to pass through. The tangent part 21 and the second clamping part 16 are slidably connected through the sliding groove 19. The tangent part 21 of the tangent structure 14 cuts the suture a in the clamping cavity 17. The sliding groove 19 is connected to the clamping cavity 17. The tangent structure 14 also includes a driving part 20 installed on the bottom surface of the frame 11. The tangent part 21 is connected to the output end of the driving part 20.

[0032] As one embodiment of this application, please refer to the following: Figures 2-6 As shown, the tangent part 21 includes a connecting rod 21a and a cutter 21b. The connecting rod 21a is connected to the driving part 20, and the cutter 21b is connected to the end of the connecting rod 21a. Guide blocks 22 are provided on both the upper and lower sides of the connecting rod 21a. The second clamping part 16 is provided with guide grooves 23 on the upper and lower sides of the slide groove 19 for sliding of the guide blocks 22.

[0033] In the above embodiment, the two clamping parts clamp the suture a, and the driving part 20 drives the connecting rod 21a and the cutter 21b to move in the slide groove 19. The moving direction is towards the first clamping part 15. After the cutter 21b moves from the slide groove 19 to the clamping cavity 17, it cuts the suture in the clamping cavity 17. After cutting, the driving part 20 drives the connecting rod and the cutter to retract into the slide groove 19.

[0034] As one embodiment of this application, please refer to the following: Figures 2-6As shown, the second clamping part 16 has a protrusion 24 on its end face near the first clamping part 15, and correspondingly, the first clamping part 15 has a groove 25 on its end face near the second clamping part 16 that cooperates with the protrusion 24; wherein, the contact surface between the protrusion 24 and the groove 25 is an arc-shaped surface.

[0035] As one embodiment of this application, please refer to the following: Figures 2-6 As shown, the upper end of the second clamping part 16 is connected to a T-shaped block 26, and the bottom surface of the frame 11 is provided with a T-shaped groove 27 that matches the T-shaped block 26; the length of the T-shaped block 26 is less than the length of the T-shaped groove 27.

[0036] In the above description, as the driving unit 20 pushes the tangent part 21 toward the first clamping part 15, under the action of the guide block 22, it also drives the second clamping part 16 toward the first clamping part 15, so that the protrusion 24 on the end face of the second clamping part 16 and the groove 25 on the end face of the first clamping part 15 engage and overlap, thereby achieving the fixed clamping of the suture a. The tangent part 21 then cuts the suture, so that the clamping action and the tangent action can be linked. At the same time, it should be noted that a limiting structure can be provided on the guide block 22 to prevent the guide block 22 from moving out of the guide groove 23. The limiting structure can also separate the second clamping part from the first clamping part when the driving unit performs the opposite action, ensuring that the cut suture can be removed.

[0037] In the above embodiments, the drive unit can be an electric telescopic rod or an electric cylinder, both of which are products of the prior art and will not be described in detail here.

[0038] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technological improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A tangential flat seam device, characterized in that, include, The machine body (10) and the stand (11) are provided, wherein the machine body (10) is mounted on the stand (11), and the machine body (10) has a hole (12) for the thread to pass through on the stand (11) below the sewing needle; A fixing structure (13) is provided on the bottom surface of the frame (11) for fixing the sewing thread (a); A tangent structure (14) is installed on the bottom surface of the frame (11) and located on one side of the fixed structure (13). The tangent structure (14) includes a tangent part (21), which is slidably connected to the fixed structure (13) and is used to cut the suture (a) fixed by the fixed structure (13).

2. The tangential flat seam device according to claim 1, characterized in that, The fixing structure (13) includes a first clamping part (15) and a second clamping part (16) located on both sides of the suture (a), and a clamping cavity (17) for clamping the suture (a) is formed between the first clamping part (15) and the second clamping part (16).

3. The tangential flat seam device according to claim 2, characterized in that, The first clamping part (15) is provided with a groove (18) for inserting the tangent part (21).

4. The tangential flat seam device according to claim 2, characterized in that, The second clamping part (16) is provided with a groove (19) for the passage of the tangent part (21). The tangent part (21) and the second clamping part (16) are slidably connected through the groove (19). The tangent part (21) of the tangent structure (14) cuts the suture (a) in the clamping cavity (17).

5. The tangential flat seam device according to claim 4, characterized in that, The tangent structure (14) also includes a drive unit (20) mounted on the bottom surface of the platform (11), and the tangent unit (21) is connected to the output end of the drive unit (20).

6. The tangential flat seam device according to claim 5, characterized in that, The tangent part (21) includes a connecting rod (21a) and a cutter (21b). The connecting rod (21a) is connected to the drive part (20), and the cutter (21b) is connected to the end of the connecting rod (21a). Guide blocks (22) are provided on both the upper and lower sides of the connecting rod (21a). The second clamping part (16) is provided with guide grooves (23) on both the upper and lower sides of the slide groove (19) for the guide blocks (22) to slide.

7. The tangential flat seam device according to claim 4, characterized in that, The second clamping part (16) has a protrusion (24) on its end face near the first clamping part (15), and correspondingly, the first clamping part (15) has a groove (25) on its end face near the second clamping part (16) that cooperates with the protrusion (24); wherein, the contact surface between the protrusion (24) and the groove (25) is an arc-shaped surface.

8. The tangential flat seam device according to claim 2, characterized in that, The upper end of the second clamping part (16) is connected to a T-shaped block (26), and the bottom surface of the frame (11) is provided with a T-shaped groove (27) that matches the T-shaped block (26); the length of the T-shaped block (26) is less than the length of the T-shaped groove (27).

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