Right thread hook of sewing machine, thread passing mechanism and sewing machine

Abstract

The utility model provides a sewing machine right thread hook, a thread passing mechanism and a sewing machine, the right thread hook comprises a fixed part and a thread path extension part, and the thread path extension part is arranged on the fixed part; the upper thread is arranged in the thread channel extension part in a penetrating manner, and the position of the upper thread relative to the fixed part is variable, so that the upper thread is in a vertical state. According to the right thread hook of the sewing machine, the thread passing mechanism and the sewing machine, the thread containing range of the thread passing portion on the thread channel extension portion comprises the movement range of the thread clamping face of the large thread clamping device and the movement range of the thread passing hole of the take-up lever, when sewing work is carried out, an upper thread can swing on the thread passing portion, the upper thread is made to be located at the low-tension position all the time, the variation amplitude of tension is reduced, and the sewing efficiency is improved. The stress condition of the large thread trapper is improved, the upper thread stability is improved, and therefore the problems of thread throwing, thread breaking and the like are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewing machine equipment technical field especially is related to a sewing machine right thread hook, pass through the line mechanism and sewing machine. BACKGROUND

[0002] The existing sewing machine generally controls the thread tension through adjusting the clamping force of the big thread clamp and determines the thread supply amount through adjusting the left and right positions of the right thread hook. In the sewing process of thick or high-density materials, the friction at the needle hole is large, and if the clamping force of the big thread clamp is not enough, the thread will be thrown when the thread is collected. If the clamping force of the big thread clamp is adjusted too large, when the thread is collected and the thread is tightened, the thread needs to be pulled out from the big thread clamp, and the internal tension of the thread will stretch to compensate for the required thread amount. At this time, the more the thread passing parts between the big thread clamp and the needle, the more complex the thread path, and the more the bending and turning parts, the more the tension changes, and the greater the turning angle, the greater the tension change, which leads to needle skipping, thread breaking and other problems.

[0003] In the prior art, the right thread hook is mainly used to adjust the thread supply amount before sewing starts, and the right thread hook is fixed on the sewing machine head when sewing starts. During sewing, the thread passes through the "thread stand-three eye thread hook-small thread clamp-big thread clamp-thread guide hook-right thread hook-thread guide rod-left thread hook-electronic thread clamp-needle rod lower bushing thread hook-needle rod thread hook-needle". The planes where the two sections of thread between the "big thread clamp-thread guide hook" and the "thread guide hook-right thread hook" and the two sections of thread between the "thread guide hook-right thread hook" and the "right thread hook-thread guide rod" are not the same. The greater the spatial angle of the thread between the "big thread clamp-thread guide hook" relative to the thread clamping surface of the big thread clamp, the worse the stress condition of the big thread clamp. The greater the spatial angle of the thread between the "thread guide hook-right thread hook" and the "right thread hook-thread guide rod", the greater the tension change of the thread when it is tightened, and the more likely the thread is thrown or broken. SUMMARY

[0004] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the utility model is to provide a sewing machine right thread hook, a thread passing mechanism and a sewing machine, which adjusts the angle between the thread and the thread clamping surface of the big thread clamp at the "big thread clamp-thread guide hook-right thread hook-thread guide rod", reduces the spatial bending angle of the thread, improves the stress condition of the big thread clamp, improves the stability of the thread, and reduces the tension change amplitude of the thread.

[0005] To achieve the above-mentioned purpose, the utility model provides a sewing machine right thread hook, the right thread hook includes a fixed part and a thread path extension part, the thread path extension part is arranged on the fixed part, the thread is arranged in the thread path extension part, and the position of the thread relative to the fixed part is variable, so that the thread is in a vertical state.

[0006] Preferably, the extension portion of the track is provided with a guide portion, and the guide portion is provided with a thread-passing portion, which is in contact with the surface thread for conveying the surface thread.

[0007] Preferably, the extension section includes a transition section and an annular section. One end of the transition section is fixedly mounted on the fixing section, and the other end of the transition section is connected to the guide section. The annular section is located at the end of the guide section away from the transition section. The annular section, the guide section, the fixing section, and the transition section together form a closed loop. The surface thread passes through the closed loop, and the position of the surface thread in the closed loop relative to the fixing section is variable, with the surface thread in a low-tension position.

[0008] Preferably, the line extension portion further includes a bending portion, and the transition portion is connected to the fixing portion through the bending portion, thereby reducing the internal space of the closed loop.

[0009] Preferably, one end of the line extension is slidably mounted on the fixed part, and the line extension is provided with a through hole or through groove, which serves as a guide; the surface line passes through the through hole or through groove.

[0010] Preferably, a groove is provided on the side of the fixing part, and a slider is provided on the side of the line extension part, and the slider moves along the extension direction of the groove.

[0011] To achieve the above or other objectives, this utility model also discloses a thread guide mechanism, installed on the sewing machine head; the thread guide mechanism includes a large thread clamp, a thread take-up lever, a thread easer hook, and the aforementioned right thread hook; the large thread clamp is provided with two opposing thread clamping plates, forming a large thread clamping surface between the two clamping plates, and the thread take-up lever is provided with a thread take-up lever thread pass-through hole; the top thread passes through the thread clamping surface of the large thread clamp, passes through the thread easer hook and the right thread hook, enters the thread take-up lever, and exits through the thread take-up lever thread pass-through hole.

[0012] Preferably, the fixing part has a fixing part connecting groove, and the sewing machine head has a right hook connecting hole. The fixing part connecting groove is aligned with the right hook connecting hole, and fasteners are inserted through both of them.

[0013] Preferably, the extending direction of the fixing part is the same as the radial direction of the clamping piece, and the extending direction of the guide part provided on the track extension part is the same as the axial direction of the clamping piece.

[0014] To achieve the above or other objectives, this utility model also discloses a sewing machine, including the aforementioned thread guide mechanism; during the sewing process, the take-up lever drives the top thread to be in a taut state, and the top thread passes through the thread track extension and is in a straight state in real time.

[0015] As described above, the sewing machine right thread hook, thread guide mechanism, and sewing machine involved in this utility model have the following beneficial effects:

[0016] This utility model relates to a sewing machine right thread hook, a thread guide mechanism, and a sewing machine. The thread-carrying range of the thread guide on the thread extension includes the thread clamping surface of the large thread clamp and the movement range of the thread take-up lever's thread guide hole. When sewing is being performed, the thread can swing on the thread guide, keeping the thread in a low-tension position, reducing the range of tension changes, improving the stress on the large thread clamp, and increasing the stability of the thread, thereby reducing the occurrence of problems such as thread slippage and breakage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the sewing machine head of the sewing machine involved in the present invention;

[0018] Figure 2 This is a schematic diagram of the first connection structure of the right thread hook of the sewing machine involved in the present invention;

[0019] Figure 3 This is a schematic diagram of a second connection structure for the right thread hook of a sewing machine according to the present invention.

[0020] Figure 4 This is a schematic diagram of a third connection structure for the right thread hook of a sewing machine according to the present invention.

[0021] Figure 5 This is a first schematic diagram of the right hook surface trajectory involved in the present invention;

[0022] Figure 6 This is a second schematic diagram of the right hook surface trajectory involved in the present invention;

[0023] Figure 7 This is a third schematic diagram of the right hook surface trajectory involved in the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Sewing machine head; 2. Large thread clamp; 3. Thread catch hook; 4. Right thread hook; 41. Fixing part; 411. Fixing part connecting groove; 42. Thread extension part; 421. Thread guide part; 422. Guide part; 423. Transition part; 424. Circular part; 425. Bending part; 5. Thread take-up lever; 61. First section of top thread; 62. Second section of top thread; 63. Third section of top thread; 7. Large thread clamping surface. Detailed Implementation

[0026] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0027] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0028] This utility model provides a right-side hook for a sewing machine. For ease of description, the length direction of the sewing machine head 1 is defined as the left-right direction, the width direction as the front-back direction, and the height direction as the up-down direction. Therefore, in... Figure 1 Establish a spatial rectangular coordinate system, where the positive and negative directions of the X-axis are the back and front directions, the positive and negative directions of the Y-axis are the left and right directions, and the up and down directions of the Z-axis are the up and down directions.

[0029] like Figures 1-4 As shown, this utility model provides a right thread hook for a sewing machine. The right thread hook 4 includes a fixing part 41 and a thread extension part 42. The thread extension part 42 is disposed on the fixing part 41. The top thread passes through the thread extension part 42, and the position of the top thread relative to the fixing part 41 is variable, so that the top thread is in a vertical state.

[0030] The sewing machine right thread hook of this utility model has a thread extension part 42 disposed on a fixed part 41. The top thread passes through the thread extension part 42 and the position of the top thread in the thread extension part 42 relative to the fixed part 41 can change. In this way, during the sewing process, the position of the top thread can change under the action of force and always be in a low tension position, reducing the range of tension changes and avoiding problems such as thread slippage and thread breakage.

[0031] In this embodiment, the line extension portion 42 can be fixedly disposed on the fixing portion 41, or it can be slidably disposed on the fixing portion 41. Thus, the connection structure between the line extension portion 42 and the fixing portion 41 can have the following types:

[0032] First type of connection structure:

[0033] like Figure 2As shown, the line extension 42 includes a transition section 423 and an annular section 424. One end of the transition section 423 is fixedly mounted on the fixing section 41, and the other end of the transition section 423 is connected to the guide section 422. The annular section 424 is located at the end of the guide section 422 away from the transition section 423. The annular section 424, the guide section 422, the fixing section 41, and the transition section 423 form a closed loop. The top thread passes through the closed loop, and the position of the top thread in the closed loop relative to the fixing section 41 is variable, with the top thread in a low-tension position. Compared to the conventional right-hand hook 4, in this application, the front end of the thread-passing section 421 of the guide section 422 remains unchanged, while the rear end of the thread-passing section 421 extends beyond the rear boundary of the thread-passing hole of the take-up lever and also extends beyond the clamping surface 7 of the large thread clamp.

[0034] The second type of connection structure:

[0035] like Figure 3 As shown, the second connection structure is basically the same as the first connection structure, except that in the second connection structure, the line extension 42 also includes a backward-bent section 425. The transition section 423 is connected to the fixing section 41 through the bent section 425, reducing the internal space of the closed loop. Compared with the first connection structure, the line-passing section 421 has a smaller line-carrying range, which can reduce the random swing amplitude of the line on the line-passing section 421 and improve the stability of the line.

[0036] The third type of connection structure:

[0037] like Figure 4 As shown, one end of the thread extension 42 is slidably mounted on the fixing part 41. The thread extension 42 has a through hole or through groove, which serves as a guide part 422 through which the thread passes. Further, in the third connection structure, a sliding groove is provided on the left side of the fixing part 41 along the front-back direction, and a slider is provided on the right side of the thread extension 42, moving back and forth in the sliding groove. When the thread swings back and forth under the action of the thread take-up rod 5, the thread will swing back and forth in the through hole or through groove, thereby causing the thread extension 42 to slide in the sliding groove. The movement range of the through hole or through groove exceeds the rear boundary of the movement range of the thread take-up rod's thread-passing hole and also exceeds the thread-clamping surface 7 of the large thread clamp. In the third connection structure, the guide part 422 is the through hole or through groove in the thread extension 42, and the thread-passing part 421 is the inner wall of the through hole or through groove.

[0038] In the first connection structure and the second connection structure, such as Figure 2 , Figure 3 As shown, the end of the annular portion 424 away from the guide portion 422 is located in the connecting groove 411 of the fixing portion. In this way, when the surface line swings in the closed ring, it will be limited by the rear side of the fixing portion 41, preventing it from getting stuck in the gap between the annular portion 424 and the fixing portion 41.

[0039] To achieve the above or other objectives, this utility model also discloses a thread guide mechanism, which is installed on the sewing machine head 1. The thread guide mechanism includes a large thread clamp 2, a thread take-up lever 5, a thread easer hook 3, and the aforementioned right thread hook 4. The large thread clamp 2 is provided with two opposing thread clamping plates, and a large thread clamping surface 7 is formed between the two thread clamping plates. The thread take-up lever 5 is provided with a thread take-up lever thread pass-through hole. The top thread passes through the large thread clamping surface 7, passes through the thread easer hook 3 and the right thread hook 4, enters the thread take-up lever 5, and exits through the thread take-up lever thread pass-through hole of the thread take-up lever 5.

[0040] Preferred, such as Figures 2-4 As shown, the fixing part 41 has a fixing part connecting groove 411, and the sewing machine head 1 has a right thread hook connecting hole. The fixing part connecting groove 411 is aligned with the right thread hook connecting hole, and fasteners are inserted through both. In this embodiment, the right thread hook connecting hole is located on the rear side of the sewing machine head 1. The fixing part connecting groove 411 extends through the front-to-back direction and extends in the left-to-right direction. In this way, the right thread hook 4 can be adjusted in the left-to-right direction through the fixing part connecting groove 411, the right thread hook connecting hole, and the fasteners in both, so that the top thread always fits the thread guide part 421 of the right thread hook 4 when it passes through the right thread hook 4, reducing the variation in the tension of the top thread.

[0041] Preferred, such as Figure 1 As shown, the extending direction of the fixing part 41 is the same as the radial direction of the clamping piece, and the extending direction of the thread-passing part 421 is the same as the axial direction of the clamping piece. In this embodiment, the radial direction of the clamping piece is the left-right direction, and the axial direction of the clamping piece is the front-back direction. The thread take-up rod 5 swings back and forth during the lifting and lowering process.

[0042] To achieve the above or other objectives, this utility model also discloses a sewing machine, including the aforementioned right thread hook 4. During the sewing process, the take-up lever 5 drives the top thread to be in a taut state, and the top thread is in close contact with the thread guide part 421 of the right thread hook 4 and is in a straight state in real time.

[0043] Furthermore, such as Figure 1 , Figures 5-7As shown, the thread between the large thread clamp 2 and the slow hook 3 is the first thread segment 61. The first thread segment 61 comes out from the thread clamping plate of the large thread clamp 2, passes through the thread take-up spring, and wraps around the slow hook 3. The thread between the slow hook 3 and the right hook 4 is the second thread segment 62. The second thread segment 62 comes out from the slow hook 3 and wraps around the guide part 422 of the right hook 4. The thread between the right hook 4 and the thread take-up rod through the thread hole is the third thread segment 63. The thread-carrying range of the thread-carrying part 421 includes the movement range of the thread take-up rod through the thread hole. During sewing, the extension direction of the second thread segment 62 and the extension direction of the third thread segment 63 are always in a state of overlap. The thread-carrying range of the thread-carrying part 421 includes the thread clamping surface 7 of the large thread clamp. During sewing, the angle between the first thread segment 61 and the thread clamping surface 7 of the large thread clamp changes within a certain range.

[0044] The three connection structures between the line extension part 42 and the fixing part 41 disclosed in this utility model all include the movement range of the line-passing part 421, which includes the line clamping surface 7 of the large line clamp and the line-passing hole of the line-taking rod on the line-taking rod 5. This is used to reduce the spatial angle between the first section of the surface line 61 and the line clamping surface 7 of the large line clamp, and between the second section of the surface line 62 and the third section of the surface line 63, thereby improving the stress condition of the large line clamp 2, increasing the stability of the surface line, reducing the tension of the surface line, and thus reducing the occurrence of problems such as line throwing and line breakage.

[0045] This utility model relates to a sewing machine right thread hook, a thread guide mechanism, and a sewing machine. The thread-carrying range of the thread guide part 421 in the right thread hook 4 includes the movement range of the large thread clamping surface 7 and the thread take-up lever thread guide hole. During the sewing process, the extension direction of the second section of the top thread 62 and the extension direction of the third section of the top thread 63 are kept in real time coincident, and the angle between the first section of the top thread 61 and the large thread clamping surface 7 changes within a certain range. This improves the stress on the large thread clamp 2, increases the stability of the top thread, reduces the tension of the top thread, and reduces the occurrence of problems such as thread slippage and thread breakage.

[0046] To visually demonstrate the impact of the thread-holding range of the thread guide 421 on the force applied to the large thread clamp 2 and the tension of the surface thread, since the position of the take-up lever 5 changes constantly during the sewing process, several surface thread trajectories of the right thread hook 4 during the sewing process are listed based on the position of the take-up lever's thread-holding hole relative to the large thread clamp 7, as shown below:

[0047] 1. The thread-passing hole of the thread-taking rod is located on the front side of the thread-clamping surface 7 of the large thread clamp;

[0048] 1.1, such as Figure 5 As shown in .1, the thread-passing part 421 in the right hook 4 does not include the large thread clamping surface 7. The thread-passing part 421 is located in front of the large thread clamping surface 7. When the thread passes through the thread-passing part 421, it contacts the rear end of the thread-passing part 421.

[0049] 1.2, such as Figure 5 As shown in Figure 2, the thread-passing part 421 in the right hook 4 includes a large thread clamping surface 7, and the thread contacts the middle part of the thread-passing part 421 when it passes through the thread-passing part 421.

[0050] 1.3, such as Figure 5 As shown in Figure 3, the thread-passing part 421 in the right hook 4 includes a large thread clamping surface 7, and the front end of the thread-passing part 421 is flush with the large thread clamping surface 7; when the thread passes through the thread-passing part 421, it contacts the front end of the thread-passing part 421.

[0051] 2. The thread-passing hole of the thread-taking rod is located directly above the thread-clamping surface 7 of the large thread clamp;

[0052] 2.1, such as Figure 6 As shown in .1, the thread-passing part 421 in the right hook 4 does not include the large thread clamping surface 7. The thread-passing part 421 is located in front of the large thread clamping surface 7. When the thread passes through the thread-passing part 421, it contacts the rear end of the thread-passing part 421.

[0053] 2.2, such as Figure 6 As shown in Figure 2, the thread-passing part 421 in the right hook 4 includes a large thread clamping surface 7, and the thread contacts the middle part of the thread-passing part 421 when it passes through the thread-passing part 421.

[0054] 2.3, such as Figure 6 As shown in .3, the thread-passing part 421 in the right hook 4 does not include the large thread clamping surface 7. The thread-passing part 421 is located behind the large thread clamping surface 7. When the thread passes through the thread-passing part 421, it contacts the front end of the thread-passing part 421.

[0055] 3. The thread-passing hole of the thread-taking rod is located behind the thread-clamping surface 7 of the large thread clamp;

[0056] 3.1, such as Figure 7 As shown in .1, the thread-passing part 421 in the right hook 4 does not include the large thread clamping surface 7. The thread-passing part 421 is located in front of the large thread clamping surface 7. When the thread passes through the thread-passing part 421, it contacts the rear end of the thread-passing part 421.

[0057] 3.2, such as Figure 7 As shown in Figure 2, the thread-passing part 421 in the right hook 4 includes a large thread clamping surface 7, and the rear end of the thread-passing part 421 is flush with the large thread clamping surface 7; when the thread passes through the thread-passing part 421, it contacts the rear end of the thread-passing part 421.

[0058] 3.3, such as Figure 7 As shown in Figure 3, the thread-passing part 421 in the right hook 4 includes a large thread clamping surface 7, and the thread contacts the middle part of the thread-passing part 421 when it passes through the thread-passing part 421.

[0059] In summary, from the above nine types of surface and line trajectories, we can conclude that:

[0060] When the line-carrying range of the line-passing part 421 in the right line hook 4 does not include the line-clamping surface 7 of the large line clamp, nor the movement range of the line-passing hole of the line take-up lever (e.g.) Figure 5 1. Figure 6 1. Figure 6 3. Figure 7 1). During the sewing process, the end (front or rear end) of the guide part 422 will come into contact with the top thread. At this time, the spatial angle between the second section of top thread 62 and the third section of top thread 63 is relatively large, and the tension when the top thread is taut is relatively large; the spatial angle between the first section of top thread 61 and the clamping surface 7 of the large clamp is relatively large, the force on the large clamp 2 is relatively poor, the tension of the top thread in the large clamp 2 is relatively unstable, and problems such as thread slippage and thread breakage are prone to occur.

[0061] When the line-carrying range of the line-passing part 421 in the right line hook 4 includes the line-clamping surface 7 of the large line clamp, but does not include the range of motion of the line-passing hole of the line take-up lever (e.g.) Figure 5 3. Figure 7 2). During the sewing process, the end (front or rear end) of the guide part 422 contacts the top thread. At this time, the spatial angle between the first section of top thread 61 and the clamping surface 7 of the large thread clamp is the smallest, and the force on the large thread clamp 2 is the best. However, the spatial angle between the second section of top thread 62 and the third section of top thread 63 is relatively small. Figure 6 The situation in .2 is more significant, and the tension of the surface line is greater here.

[0062] When the line-carrying range of the line-passing part 421 in the right line hook 4 includes both the line-clamping surface 7 of the large line clamp and the movement range of the line-passing hole of the line take-up lever (e.g.) Figure 5 2. Figure 6 2. Figure 7 3). During the sewing process, the middle part of the guide 422 comes into contact with the top thread. At this time, the spatial angle between the second section of the top thread 62 and the third section of the top thread 63 is the smallest, and the tension of the top thread is relatively small at this point.

[0063] Therefore, in this application, the line-carrying range of the line-passing part 421 in the right line hook 4 includes the line-clamping surface 7 of the large line clamp and the movement range of the line-passing hole of the line take-up rod, which can keep the line in a low-tension position, reduce the variation of the line tension, improve the force condition of the large line clamp 2, and reduce the occurrence of problems such as line throwing and line breakage.

[0064] In summary, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0065] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A right-hand thread hook for a sewing machine, characterized in that: The right hook (4) includes a fixing part (41) and a line extension part (42), the line extension part (42) is disposed on the fixing part (41); the top line passes through the line extension part (42), and the position of the top line relative to the fixing part (41) is variable, so that the top line is in a vertical state.

2. The right-hand thread hook of a sewing machine according to claim 1, characterized in that: The extension section (42) of the line channel is provided with a guide section (422), and the guide section (422) is provided with a thread-passing section (421). The thread-passing section (421) is in contact with the surface line and is used to transport the surface line.

3. The right-hand thread hook of a sewing machine according to claim 2, characterized in that: The extension section (42) includes a transition section (423) and an annular section (424). One end of the transition section (423) is fixedly disposed on the fixing section (41), and the other end of the transition section (423) is connected to the guide section (422). The annular section (424) is disposed at the end of the guide section (422) away from the transition section (423). The annular section (424), the guide section (422), the fixing section (41), and the transition section (423) together form a closed loop. The surface thread passes through the closed loop, and the position of the surface thread in the closed loop relative to the fixing section (41) is variable. The surface thread is in a low tension position.

4. The right-hand thread hook of a sewing machine according to claim 3, characterized in that: The line extension (42) also includes a bending section (425), and the transition section (423) is connected to the fixing section (41) through the bending section (425), thereby reducing the internal space of the closed loop.

5. The right-hand thread hook of a sewing machine according to claim 2, characterized in that: One end of the line extension (42) is slidably disposed on the fixed part (41). The line extension (42) is provided with a through hole or through groove, which is a guide part (422); the surface line passes through the through hole or through groove.

6. The right-hand thread hook of a sewing machine according to claim 5, characterized in that: The fixing part (41) has a groove on its side, and the line extension part (42) has a slider on its side, which moves along the extension direction of the groove.

7. A thread guiding mechanism, mounted on the sewing machine head (1); characterized in that: The thread-passing mechanism includes a large thread clamp (2), a thread-taking rod (5), a thread-slowing hook (3), and a right thread hook (4) as described in any one of claims 1-6; the large thread clamp (2) is provided with two opposing thread-clamping plates, and a large thread clamping surface (7) is formed between the two thread-clamping plates; the thread-taking rod (5) is provided with a thread-passing hole. The thread passes through the thread clamping surface (7) of the large thread clamp, passes through the slow thread hook (3) and the right thread hook (4) and enters the thread take-up rod (5), and then passes through the thread take-up rod through the thread hole of the thread take-up rod (5).

8. The wire guiding mechanism according to claim 7, characterized in that: The fixing part (41) is provided with a fixing part connecting groove (411), and the sewing machine head (1) is provided with a right hook connecting hole. The fixing part connecting groove (411) is aligned with the right hook connecting hole, and fasteners are inserted through both.

9. The wire guiding mechanism according to claim 7, characterized in that: The extension direction of the fixing part (41) is the same as the radial direction of the clamping piece, and the extension direction of the guide part (422) provided on the line extension part (42) is the same as the axial direction of the clamping piece.

10. A sewing machine, characterized in that: Includes the thread guide mechanism as described in claim 7; during the sewing process, the thread take-up lever (5) drives the top thread to be in a taut state, and the top thread passes through the thread track extension (42) and is in a straight state in real time.

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