Sewing machine cutting device capable of conveniently adjusting thread cutting length

Abstract

The utility model discloses a sewing machine cutting device convenient to adjust thread cutting length, and particularly relates to the field of cloth processing, the sewing machine cutting device comprises a mounting plate, two sliding rails are fixedly arranged at the top of the mounting plate, a base is arranged at the tops of the two sliding rails in a sliding mode, a box body is fixedly arranged at the top of the base, and a sliding groove is formed in one side of the box body. And a wire cutting assembly is arranged in the sliding groove in a sliding manner. Compared with the prior art, due to the fact that the thread cutting assembly is arranged, the heating plate is used for heating a sewing thread so that the follow-up sewing thread cannot be scattered after being cut off, the first frosted plate and the second frosted plate play a role in enhancing friction force on the sewing thread, the sewing thread is kept straight, a main knife can cut off the sewing thread conveniently, and after the sewing thread is cut off, the sewing thread is cut off. And under the action of elastic force of a first spring and a second spring, a shifting rod, a second fixing plate, a main knife, a transverse plate, a T-shaped sliding block, a third fixing plate and a heating plate are all rebounded and reset.

Description

Technical Field

[0001] The utility model relates to the technical field of fabric processing, and more specifically, the utility model relates to a sewing machine cutting device for conveniently adjusting the length of a cut line. Background Art

[0002] A sewing machine cutting device is a component combination on a sewing machine used for cutting and severing fabrics, threads, etc. during the sewing process. Its main function is to accurately and quickly cut fabrics or related sewing materials according to preset requirements to achieve specific sewing effects.

[0003] When the existing sewing machine cutting device completes a sewing process, it is necessary to cut the sewing thread, and the length of the sewing thread from the start of the cutting action to the complete cutting of the sewing thread cannot be determined, thus affecting the aesthetics of the sewn product. Summary of the Utility Model

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a sewing machine cutting device for conveniently adjusting the length of a cut line to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A sewing machine cutting device for conveniently adjusting the length of a cut line, including a mounting plate, two slide rails are fixedly arranged on the top of the mounting plate, a base is slidably arranged on the top of the two slide rails, a box body is fixedly arranged on the top of the base, a chute is arranged on one side of the box body, and a tangent component is slidably arranged inside the chute;

[0006] The tangent component includes a main slider, the main slider is slidably connected with the chute, one end of the main slider is trapezoidal in cross-section, an assembly port is arranged on the surface of the slider, two first fixing plates are fixedly arranged on one side of the assembly port, and auxiliary knives are fixedly arranged on one side of the two first fixing plates, and the cross-section of the auxiliary knife is a right trapezoid.

[0007] As a further description of the above technical solution:

[0008] A first abrasive plate is fixedly arranged on one side of the auxiliary knife, a second abrasive plate is arranged on the top of the first abrasive plate, the second abrasive plate is fixedly connected with the auxiliary knife, a rotating shaft is fixedly arranged inside the assembly port, a rotating bearing is fixedly arranged outside the rotating shaft, and a second fixing plate is fixedly arranged outside the rotating bearing.

[0009] As a further description of the above technical solution:

[0010] One end of the second fixed plate is fixedly provided with a main knife, the top of the main knife is fixedly provided with a cross plate, a plurality of T-shaped grooves are formed on the surface of the cross plate, a first spring is fixedly arranged inside each of the plurality of T-shaped grooves, one end of the first spring is fixedly connected to a T-shaped slider, the T-shaped slider is slidably connected to the T-shaped groove, the top of the T-shaped slider is fixedly provided with a third fixed plate, a heating plate is fixedly arranged on the top of the third fixed plate, a second spring is fixedly arranged on one side of the second fixed plate, the second spring is fixedly connected to the main slider, and a dial rod is fixedly arranged at the other end of the second fixed plate.

[0011] As a further description of the above technical solution:

[0012] A pointer is fixedly arranged on one side of the main slider, and a scale is fixedly arranged on one side of the box body.

[0013] As a further description of the above technical solution:

[0014] A plurality of buckle holes are formed on the surface of the box body, a buckle is arranged inside the buckle hole, the cross section of one side of the buckle is L-shaped, one side of the buckle is fixedly connected to the main slider, and a lifting rod is fixedly arranged on the front side of the buckle.

[0015] As a further description of the above technical solution:

[0016] A clamping opening is formed at the bottom of the box body, a clamping channel is formed on one side of the clamping opening, the cross section of the clamping channel is a right trapezoid, a fastening plate is fixedly arranged inside the clamping channel, and a through hole is formed on the surface of the fastening plate.

[0017] As a further description of the above technical solution:

[0018] A plurality of third springs are fixedly arranged on one side of the fastening plate, a clamping plate is fixedly arranged at one end of each of the plurality of third springs, a telescopic rod is fixedly arranged outside the third spring, a pull rod is slidably arranged inside the through hole, one end of the pull rod is fixedly connected to the clamping plate, and a finger ring is fixedly arranged at the other end of the pull rod.

[0019] The technical effects and advantages of the present utility model:

[0020] 1. By setting the tangent component, lift the lifting rod according to the specific required secant length, thereby adjusting the main slider to align the pointer with a specific scale on the scale. After alignment, lower the lifting rod so that the buckle snaps into the buckle hole. At this time, the tangent device is completely fixed. Then, while the heating plate works to heat up, toggle the lever. The lever is connected to the second fixing plate, and the second fixing plate drives the main knife to rotate clockwise by an angle around the rotating shaft with the rotating bearing due to the thrust. The cross plate, the third fixing plate, and the heating plate rotate due to the rotation of the main knife. The second spring is stretched due to the rotation of the second fixing plate. After rotating to a certain angle, the heating plate first contacts the sewing thread and then contacts the second abrasive plate. Due to the extrusion effect, the T-shaped slider moves in the opposite direction and simultaneously compresses the first spring. Then the main knife contacts the sewing thread again to cut the sewing thread. Compared with the prior art, the sewing thread is heated by the heating plate so that the subsequent cut sewing thread will not fluff. The first abrasive plate and the second abrasive plate enhance the friction of the sewing thread, keeping the sewing thread straight and facilitating the main knife to cut the sewing thread. After cutting the sewing thread, due to the elastic force of the first spring and the second spring, the lever, the second fixing plate, the main knife, the cross plate, the T-shaped slider, the third fixing plate, and the heating plate all rebound and reset;

[0021] 2. By setting the clamping port, clamping channel, clamping plate, third spring, telescopic rod, pull rod, fastening plate, through hole, and finger ring, pull the present invention along the slide rail to the fixed working area through the finger ring. At the same time, the sewing thread passes through the clamping port and contacts the first abrasive plate and the second abrasive plate on the auxiliary knife in the tangent component. At this time, the staff loosens the finger ring, and the clamping plate will clamp the sewing thread due to the elastic force of the third spring on the fastening plate. Compared with the prior art, when pulling the present invention along the slide rail to the fixed working area, the clamping work is already ready. When reaching the working area and the sewing thread has reached the corresponding position of the clamping port, as long as the finger ring is loosened, the sewing thread can be clamped and fixed. Such an operation is more convenient and fast. At the same time, the size of the finger ring adapts to the little finger of anyone. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the scale, pointer, buckle hole, buckle, and lifting rod structure of the present invention.

[0024] Figure 3 It is a schematic diagram of the cross-section structure of the main slider of the present invention.

[0025] Figure 4 It is a schematic diagram of the main slider, buckle, lifting rod, and assembly port structure of the present invention.

[0026] Figure 5 It is a schematic diagram of the tangent component structure of the present invention.

[0027] Figure 6 Schematic diagram of the second spring, the rotating shaft of the second fixing plate and the rotating bearing of the present utility model.

[0028] Figure 7 Schematic diagram of the heating plate, the third fixing plate, the T-shaped slider, the first spring, the T-shaped groove and the cross plate of the present utility model.

[0029] Figure 8 Schematic diagram of the clamping opening, the clamping channel and the clamping assembly of the present utility model.

[0030] Figure 9 Schematic diagram of the clamping plate, the third spring, the telescopic rod, the pull rod and the fastening plate of the present utility model.

[0031] Reference numerals are: 1, mounting plate; 2, slide rail; 3, base; 4, box body; 5, chute; 6, main slider; 7, assembly port; 8, first fixing plate; 9, auxiliary knife; 10, first grinding plate; 11, second grinding plate; 12, rotating shaft; 13, rotating bearing; 14, second fixing plate; 15, main knife; 16, cross plate; 17, T-shaped groove; 18, first spring; 19, T-shaped slider; 20, third fixing plate; 21, heating plate; 22, second spring; 23, lever; 24, pointer; 25, scale; 26, snap hole; 27, snap; 28, lifting rod; 29, clamping opening; 30, clamping channel; 31, fastening plate; 32, through hole; 33, third spring; 34, clamping plate; 35, telescopic rod; 36, pull rod; 37, finger ring. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0033] As shown in the attached Figures 1-5 A sewing machine cutting device convenient for adjusting the length of the cutting line shown in the figure includes a mounting plate 1. Two slide rails 2 are fixedly provided on the top of the mounting plate 1. A base 3 is slidably provided on the top of the two slide rails 2. A box body 4 is fixedly provided on the top of the base 3. A chute 5 is opened on one side of the box body 4. A tangent component is slidably provided inside the chute 5.

[0034] The tangent component includes a main slider 6, which is slidably connected to a chute 5. One end of the main slider 6 has a trapezoidal cross-section. An assembly opening 7 is provided on the surface of the slider. On one side of the assembly opening 7, two first fixing plates 8 are fixedly provided. On one side of each of the two first fixing plates 8, an auxiliary knife 9 is fixedly provided. The cross-section of the auxiliary knife 9 is a right trapezoid. The trapezoidal cross-section at one end of the main slider is for better utilization of the principle of scissors, and the interaction between the main knife and the auxiliary knife is used to achieve the purpose of tangent. The auxiliary knife is a flat-edge knife, which is more convenient for installing the abrasive plate.

[0035] In some embodiments, according to Figure 1 As shown, on one side of the auxiliary knife 9, a first abrasive plate 10 is fixedly provided. On the top of the first abrasive plate 10, a second abrasive plate 11 is provided. The second abrasive plate 11 is fixedly connected to the auxiliary knife 9. Inside the assembly opening 7, a rotating shaft 12 is fixedly provided. Outside the rotating shaft 12, a rotating bearing 13 is fixedly provided. Outside the rotating bearing 13, a second fixing plate 14 is fixedly provided. Installing the abrasive plate is to enhance the friction with the suture, keep the suture straight, and facilitate the main knife to cut the suture.

[0036] In some embodiments, according to Figure 1 As shown, at one end of the second fixing plate 14, a main knife 15 is fixedly provided. On the top of the main knife 15, a cross plate 16 is fixedly provided. A plurality of T-shaped grooves 17 are provided on the surface of the cross plate 16. Inside each of the plurality of T-shaped grooves 17, a first spring 18 is fixedly provided. One end of the first spring 18 is fixedly connected to a T-shaped slider 19. The T-shaped slider 19 is slidably connected to the T-shaped groove 17. On the top of the T-shaped slider 19, a third fixing plate 20 is fixedly provided. On the top of the third fixing plate 20, a heating plate 21 is fixedly provided. On one side of the second fixing plate 14, a second spring 22 is fixedly provided. The second spring 22 is fixedly connected to the main slider 6. At the other end of the second fixing plate 14, a lever 23 is fixedly provided. The purpose of setting the T-shaped slider, T-shaped groove and first spring is to enable the heating plate to have enough time to heat the suture before the main knife cuts the suture.

[0037] In some embodiments, according to Figure 1 As shown, on one side of the main slider 6, a pointer 24 is fixedly provided. On one side of the box body 4, a scale 25 is fixedly provided. The purpose of setting the pointer and the scale is to visualize the length and facilitate the adjustment of the originally uncertain cutting line length.

[0038] In some embodiments, according to Figure 1 As shown, a plurality of snap holes 26 are provided on the surface of the box body 4. Inside the snap holes 26, a snap 27 is provided. One side cross-section of the snap 27 is L-shaped. One side of the snap 27 is fixedly connected to the main slider 6. In front of the snap 27, a lifting rod 28 is fixedly provided. The purpose of setting the snap and the snap hole is to fix the entire tangent component.

[0039] In some embodiments, according to Figure 1As shown, a clamping opening 29 is formed at the bottom of the box body 4, and a clamping channel 30 is formed on one side of the clamping opening 29. The cross-section of the clamping channel 30 is set as a right trapezoid. A fastening plate 31 is fixedly arranged inside the clamping channel 30, and through holes 32 are formed on the surface of the fastening plate 31. The fastening plate is provided to limit the springs and the clamping plate, and the through holes are provided to facilitate the movement of the pull rod.

[0040] In some embodiments, according to Figure 1 As shown, a plurality of third springs 33 are fixedly arranged on one side of the fastening plate 31. One ends of the plurality of third springs 33 are fixedly provided with a clamping plate 34. An expansion rod 35 is fixedly arranged outside the third spring 33. A pull rod 36 is slidably arranged inside the through hole 32. One end of the pull rod 36 is fixedly connected with the clamping plate 34, and a finger ring 37 is fixedly arranged at the other end of the pull rod 36. The purpose of setting the expansion rod is to prevent the third spring from bending due to the action of force when the assembly is running.

[0041] The working principle of the present utility model: After completing a sewing process, the staff will use the present utility model installed on the desktop through the mounting plate 1 to perform the thread cutting work. The specific operation is as follows:

[0042] First, the staff pulls the present utility model along the slide rail 2 to the fixed working area through the finger ring 37. At the same time, the sewing thread passes through the clamping opening 29 and contacts the first abrasive plate 10 and the second abrasive plate 11 on the auxiliary knife 9 in the thread cutting assembly. At this time, the staff releases the finger ring 37, and the clamping plate 34 will clamp the sewing thread due to the elastic force of the third spring 33 on the fastening plate 31;

[0043] Secondly, according to the specific required thread cutting length, lift the lifting rod 28, so as to adjust the main slider 6 to align the pointer 24 with a specific scale on the scale 25. After alignment, put down the lifting rod 28 to make the buckle 27 snap into the buckle hole 26. At this time, the thread cutting device is completely fixed;

[0044] Then, the staff performs the tangent operation while the heating plate 21 works to increase the temperature. Due to the previous effect of the clamping component, the suture is in a straight state. The staff toggles the lever 23. The lever 23 is connected to the second fixing plate 14. The second fixing plate 14 drives the main knife 15 to rotate clockwise by an angle around the rotation axis 12 with the rotation bearing 13 due to the thrust. The cross plate 16, the third fixing plate 20, and the heating plate 21 rotate due to the rotation of the main knife 15. The second spring 22 is stretched due to the rotation of the second fixing plate 14. After rotating to a certain angle, the heating plate 21 first contacts the suture and then contacts the second grinding plate 11. Due to the extrusion effect, the T-shaped slider 19 moves in the opposite direction and simultaneously squeezes the first spring 18. Then the main knife 15 contacts the suture again to cut the suture. During this process, the heating plate 21 heats the suture so that the subsequent cut suture will not become fluffy. The first grinding plate 10 and the second grinding plate 11 enhance the friction force on the suture, keeping the suture straight and facilitating the main knife 15 to cut the suture. After cutting the suture, due to the elastic force of the first spring 18 and the second spring 22, the lever 23, the second fixing plate 14, the main knife 15, the cross plate 16, the T-shaped slider 19, the third fixing plate 20, and the heating plate 21 all rebound and reset;

[0045] Finally, the staff moves the present utility model to the initial position, throws away the cut suture, and completes a working cycle.

Claims

1. A sewing machine cutting device for conveniently adjusting the length of the cutting line, comprising a mounting plate (1), characterized in that: Two slide rails (2) are fixedly provided on the top of the mounting plate (1), a base (3) is slidably provided on the top of the two slide rails (2), a box body (4) is fixedly provided on the top of the base (3), a slide groove (5) is provided on one side of the box body (4), and a tangent assembly is slidably provided inside the slide groove (5); The tangent assembly comprises a main slider (6), the main slider (6) is slidably connected to the slide groove (5), the cross section of one end of the main slider (6) is set to be a trapezoid, the surface of the main slider (6) is provided with an assembly opening (7), one side of the assembly opening (7) is fixed with two first fixing plates (8), one side of the two first fixing plates (8) is fixed with an auxiliary knife (9), and the cross section of the auxiliary knife (9) is set to be a right-angled trapezoid.

2. A sewing machine cutting device for conveniently adjusting the length of the cutting line according to claim 1, characterized in that: A first grinding plate (10) is fixedly provided on one side of the auxiliary knife (9), a second grinding plate (11) is provided on the top of the first grinding plate (10), the second grinding plate (11) is fixedly connected to the auxiliary knife (9), a rotating shaft (12) is fixedly provided inside the assembly opening (7), a rotating bearing (13) is fixedly provided outside the rotating shaft (12), and a second fixed plate (14) is fixedly provided outside the rotating bearing (13).

3. A sewing machine cutting device for conveniently adjusting the length of the cutting line according to claim 2, characterized in that: A main knife (15) is fixedly provided at one end of the second fixed plate (14), a transverse plate (16) is fixedly provided on the top of the main knife (15), a plurality of T-shaped slots (17) are provided on the surface of the transverse plate (16), a first spring (18) is fixedly provided inside each of the plurality of T-shaped slots (17), one end of the first spring (18) is fixedly connected to a T-shaped slider (19), the T-shaped slider (19) is slidably connected to the T-shaped slot (17), a third fixed plate (20) is fixedly provided on the top of the T-shaped slider (19), a heating plate (21) is fixedly provided on the top of the third fixed plate (20), a second spring (22) is fixedly provided on one side of the second fixed plate (14), the second spring (22) is fixedly connected to the main slider (6), and a shifting rod (23) is fixedly provided on the other end of the second fixed plate (14).

4. A sewing machine cutting device for conveniently adjusting the length of the cutting line according to claim 1, characterized in that: A pointer (24) is fixedly provided on one side of the main sliding block (6), and a scale (25) is fixedly provided on one side of the box body (4).

5. A sewing machine cutting device for conveniently adjusting the length of the cutting line according to claim 1, characterized in that: A plurality of buckle holes (26) are provided on the surface of the box body (4), a buckle (27) is provided inside the buckle hole (26), a cross section of one side of the buckle (27) is arranged in an L shape, one side of the buckle (27) is fixedly connected to the main slider (6), and a lifting rod (28) is fixedly provided on the front side of the buckle (27).

6. A sewing machine cutting device for conveniently adjusting the length of the cutting line according to claim 1, characterized in that: The box body (4) is provided with a clamping opening (29) at the bottom, a clamping channel (30) is provided on one side of the clamping opening (29), the cross section of the clamping channel (30) is arranged in a right-angle trapezoidal shape, a fastening plate (31) is fixedly provided inside the clamping channel (30), and a through hole (32) is provided on the surface of the fastening plate (31).

7. A sewing machine cutting device for conveniently adjusting the length of the cutting line according to claim 6, characterized in that: A plurality of third springs (33) are fixedly provided on one side of the fastening plate (31), a clamping plate (34) is fixedly provided on one end of the plurality of third springs (33), a telescopic rod (35) is fixedly provided on the outside of the third spring (33), a pull rod (36) is slidably provided inside the through hole (32), one end of the pull rod (36) is fixedly connected to the clamping plate (34), and a finger ring (37) is fixedly provided on the other end of the pull rod (36).

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