Sewing machine needle fixing and mounting device

Abstract

A sewing machine needle fixing and installing device belongs to the technical field of sewing machines and comprises a needle cylinder, a movable clamping piece and a machine needle, sliding grooves are symmetrically formed in the inner wall of the needle cylinder, the movable clamping piece is movably arranged on the sliding grooves, and the upper end of the machine needle is installed on the movable clamping piece; the movable clamping piece comprises a first fixing block, a second fixing block and a threaded rod, an inner screw hole is formed in the first fixing block, a counter bore is formed in the second fixing block, the counter bore and the inner screw hole are formed in the same axis, one end of the threaded rod is movably arranged in the counter bore, and the other end of the threaded rod penetrates through the counter bore and is arranged in the inner screw hole in a threaded connection mode. A first screw hole and a second screw hole are symmetrically formed in the outer wall of the needle cylinder, the first screw hole is close to the counter bore and movably connected with the counter bore, the second screw hole is close to the inner screw hole and movably connected with the inner screw hole, the first screw hole is in threaded connection with a fastener, and a mounting groove is formed between the first fixing block and the second fixing block. The machine needle can be conveniently installed in place and fastened, and the phenomena that the machine needle is not firmly installed and the machine needle is inclined are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of sewing machines, and in particular to a sewing machine needle fixing and installing device. Background Art

[0002] The sewing machine needle is a thread connection device used for sewing materials in the sewing machine. The machine needle is also called a sewing needle or a car needle. It is an important component of the sewing machine. At present, some sewing machine needles are fixed installation devices that require users to insert the needle into the needle tube when in use. It is easy for users to make mistakes in operation, causing the needle to not be fully inserted into the needle tube, which will make it difficult for the needle to hook the thread in the later stage, resulting in skipped threads. It is also possible that the needle is not inserted firmly or the needle is skewed, resulting in deviation, wrinkles, and broken threads when sewing fabrics, affecting sewing quality and efficiency. Summary of the invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a sewing machine needle fixing and installation device, which at least partially solves the problems raised in the above background technology.

[0004] The technical solution adopted by the present invention is as follows: a sewing machine needle fixing and installation device, comprising a needle cylinder, a movable clamp and a machine needle, wherein the inner wall of the needle cylinder is symmetrically provided with slide grooves, the movable clamp is arranged in the needle cylinder, and the movable clamp is movably arranged on the slide groove, and the upper end of the machine needle is installed on the movable clamp; The movable clamp includes a first fixed block, a second fixed block and a threaded rod. The first fixed block is provided with an inner screw hole, the second fixed block is provided with a countersunk hole, and the countersunk hole and the inner screw hole are arranged on the same axis. One end of the threaded rod is movably arranged in the countersunk hole, and the other end of the threaded rod passes through the countersunk hole and is threadedly connected in the inner screw hole. The first fixed block and the second fixed block are connected by a threaded rod, and the distance between the first fixed block and the second fixed block can be adjusted by the threaded rod. The outer wall of the syringe is symmetrically provided with a first screw hole and a second screw hole, the first screw hole is arranged close to the countersunk hole, and the first screw hole is movably connected to the countersunk hole, the second screw hole is arranged close to the inner screw hole, and the second screw hole is movably connected to the inner screw hole, the first screw hole is threadedly connected with a fastener, and an installation groove is provided between the first fixed block and the second fixed block, and the installation groove is arranged in a "X" shape for installing a machine needle.

[0005] Furthermore, a cross groove is provided at one end of the threaded rod, and the cross groove is provided in the countersunk hole. A cross head is provided at one end of the fastener, and the cross head is arranged close to the inner wall of the syringe, and the cross head and the cross groove are matched.

[0006] Furthermore, the first fixed block is symmetrically provided with contraction grooves on both sides, the contraction grooves are movably provided with positioning slide bars, the outer ends of the positioning slide bars are movably provided in the slide bars, a clamping plate is fixedly provided on the positioning slide bar, and the clamping plate is clamped in the contraction groove, the clamping plate is movably arranged to fit the side wall of the contraction groove, the positioning slide bar is provided with a telescopic spring, one end of the telescopic spring is arranged against the clamping plate, and the other end of the telescopic spring is arranged against the bottom wall of the contraction groove.

[0007] Furthermore, the side wall of the syringe is symmetrically provided with positioning holes, and the positioning holes are arranged through the upper end of the slide groove.

[0008] Furthermore, the outer wall of the syringe is symmetrically provided with connecting blocks, and the connecting blocks are arranged below the positioning hole. A rotatable arc-shaped movable rod is provided on the connecting block, and a thimble is hingedly provided at the movable end of the movable rod, and the thimble is movably arranged in the positioning hole.

[0009] Furthermore, a limiting plate is provided at the lower end of the syringe, and the limiting plate is fixedly arranged at the lower end of the syringe, and a limiting slot hole is penetrated through the limiting plate.

[0010] Furthermore, a flat paddle plate is provided at the upper end of the needle, and the paddle plate is matched in size with the limiting slot hole.

[0011] In a further embodiment, the length of the paddle is greater than the length of the inner lumen of the syringe.

[0012] In a further embodiment, an elastic pad is provided on the movable clamp, the elastic pad is provided on the first fixed block, and the elastic pad is provided on the top of the mounting groove.

[0013] In a further embodiment, a handle is provided at one end of the fastener, and the handle is provided at the outer end of the syringe.

[0014] The beneficial effects achieved by the present invention using the above structure are as follows: (1) The top of the needle pushes the movable fastener to slide to the upper end of the needle cylinder. By observing the correspondence between the first screw hole and the countersunk hole, and the second screw hole and the inner screw hole, it can be judged whether the needle is fully inserted, so as to avoid the difficulty of the needle hooking the thread and the occurrence of skipped thread in the later stage due to incomplete insertion; (2) The movable clamp is fixed in position once by the positioning slide rod and the positioning hole, and is fixed in position twice by the first screw hole, the fastener, the threaded rod and the second screw hole. The double fixation increases the firmness of the needle installation. (3) When the paddle plate at the upper end of the needle is fully inserted into the mounting slot and slides to the upper end of the slide slot, the lower end of the paddle plate is just in the limit slot hole, and then the mounting slot is clamped by fasteners so that the limit slot hole and the mounting slot can jointly fix the position of the needle paddle plate to prevent the needle from tilting and causing problems such as deviation, wrinkles, and thread breakage when sewing fabrics, thereby avoiding affecting sewing quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the overall structure of a sewing machine needle fixing and installation device proposed in an embodiment of the present invention; Figure 2 A schematic diagram of the structure of a needle according to an embodiment of the present invention; Figure 3 A front perspective view of a syringe according to an embodiment of the present invention; Figure 4 For the embodiment of the present invention Figure 1 The enlarged view of point A in the middle; Figure 5 A side perspective view of a syringe according to an embodiment of the present invention; Figure 6 A schematic diagram of the structure of the movable card member provided in an embodiment of the present invention; Figure 7 A schematic diagram of the structure of a limit plate provided in an embodiment of the present invention; Figure 8 A schematic diagram of the structure of a threaded rod provided in an embodiment of the present invention; Fig. 9 This is a schematic diagram of the structure of a fastener proposed in an embodiment of the present invention.

[0016] Among them, 1. syringe, 2. movable clamp, 3. needle, 4. slide groove, 5. first fixed block, 6. second fixed block, 7. threaded rod, 8. inner screw hole, 9. countersunk hole, 10. first screw hole, 11. second screw hole, 12. fastener, 13. mounting groove, 14. cross groove, 15. cross starter, 16. shrinkage groove, 17. positioning slide rod, 18. clamping plate, 19. telescopic spring, 20. positioning hole, 21. connecting block, 22. movable rod, 23. ejector pin, 24. limit plate, 25. limit slot hole, 26. pulp plate, 27. elastic pad, 28. turning handle.

[0017] The accompanying drawings are used to provide further understanding of the embodiments and constitute a part of the specification. They are used for explanation together with the embodiments and do not constitute a limitation of the embodiments. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection.

[0019] In the description of the embodiments, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the embodiments.

[0020] The sewing machine needle is a thread connection device used for sewing materials in the sewing machine. The machine needle is also called a sewing needle or a car needle. It is an important component of the sewing machine. At present, some sewing machine needles are fixed installation devices that require users to insert the needle into the needle tube when in use. It is easy for users to make mistakes in operation, so that the needle is not fully inserted into the needle tube, which will make it difficult for the needle to hook the thread in the later stage, and the thread will jump. If the needle is not firm or the needle is crooked, it will also cause problems such as deviation, wrinkles, and broken threads when sewing fabrics, affecting the sewing quality and efficiency.

[0021] After recognizing the above problems, the inventors of the present application have proposed and disclosed a sewing machine needle fixing and installation device, which facilitates the installation of the needle and tightens the needle to avoid loose installation and skewness of the needle.

[0022] Referring to the accompanying drawings, Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the embodiment of the present disclosure provides a sewing machine needle fixing and installation device, comprising a needle cylinder 1, a movable clamp 2 and a needle 3, wherein the inner wall of the needle cylinder 1 is symmetrically provided with a slide groove 4, the movable clamp 2 is arranged in the needle cylinder 1, and the movable clamp 2 is movably arranged on the slide groove 4, and the upper end of the needle 3 is installed on the movable clamp 2; The movable clamp 2 includes a first fixed block 5, a second fixed block 6 and a threaded rod 7. The first fixed block 5 is provided with an internal screw hole 8, the second fixed block 6 is provided with a countersunk hole 9, and the countersunk hole 9 and the internal screw hole 8 are arranged on the same axis. One end of the threaded rod 7 is movably arranged in the countersunk hole 9, and the other end of the threaded rod 7 passes through the countersunk hole 9 and is threadedly connected to the internal screw hole 8. The first fixed block 5 and the second fixed block 6 are connected by the threaded rod 7, and the distance between the first fixed block 5 and the second fixed block 6 can be adjusted by the threaded rod 7. The outer wall of the syringe 1 is symmetrically provided with a first screw hole 10 and a second screw hole 11. The first screw hole 10 is arranged close to the countersunk hole 9, and the first screw hole 10 is movably connected to the countersunk hole 9. The second screw hole 11 is arranged close to the internal screw hole 8, and the second screw hole 11 is movably connected to the internal screw hole 8. The first screw hole 10 is threadedly connected with a fastener 12. A mounting groove 13 is arranged between the first fixed block 5 and the second fixed block 6. The mounting groove 13 is arranged in a "J" shape for installing the machine needle 3.

[0023] In this embodiment, during installation, the machine needle 3 can be inserted into the syringe 1 so that the upper end of the machine needle 3 is inserted into the installation hole. The "X"-shaped installation groove 13 makes it easier for the machine needle 3 to enter. Then, the machine needle 3 drives the movable clamp 2 to slide along the slide groove 4 to the upper end of the syringe 1, so that the first screw hole 10 corresponds to the countersunk hole 9, and the second screw hole 11 corresponds to the inner screw hole 8. In this process, the machine needle 3 is fully inserted. Then, the fastener 12 is rotated to make the fastener 12 drive the threaded rod 7 to rotate, and the threaded rod 7 is turned to the second screw hole 11 to fix the movable clamp 2.

[0024] It is worth noting that Figure 8 and Fig. 9 As shown, one end of the threaded rod 7 is provided with a cross groove 14, and the cross groove 14 is arranged in the countersunk hole 9. One end of the fastener 12 is provided with a cross lifter 15, and the cross lifter 15 is arranged close to the inner wall of the syringe 1, and the cross lifter 15 and the cross groove 14 are matched.

[0025] In this embodiment, when the first screw hole 10 corresponds to the countersunk hole 9 and the second screw hole 11 corresponds to the inner screw hole 8, the fastener 12 is rotated by screwing, and the fastener 12 drives the threaded rod 7 to rotate through the cooperation of the cross head 15 and the cross groove 14, thereby driving the second fixing block 6 to approach the first fixing block 5, and the mounting groove 13 presses and fixes the needle 3.

[0026] When the cross slot 14 rotates to the inner end of the countersunk hole 9, the other end of the threaded rod 7 rotates to the second screw hole 11. At this time, the first screw hole 10 fixes the fastener 12, the cross slot 14 is matched and fixed with the cross screw 15, and the threaded rod 7 is fixed in the second screw rod, thereby realizing the position fixation of the movable clamp 2 in the syringe 1.

[0027] like Figure 3 and Figure 4 As shown, the first fixed block 5 is symmetrically provided with contraction grooves 16 on both sides, and the contraction groove 16 is movably provided with a positioning slide bar 17, and the outer end of the positioning slide bar 17 is movably arranged in the slide groove 4, and a clamping plate 18 is fixedly provided on the positioning slide bar 17, and the clamping plate 18 is arranged in the contraction groove 16, and the clamping plate 18 is movably arranged to fit the side wall of the contraction groove 16, and a telescopic spring 19 is provided on the positioning slide bar 17, and one end of the telescopic spring 19 is arranged against the clamping plate 18, and the other end of the telescopic spring 19 is arranged against the bottom wall of the contraction groove 16.

[0028] like Figure 3 and Figure 4 As shown, the side wall of the syringe 1 is symmetrically provided with positioning holes 20, and the positioning holes 20 are arranged through the upper end of the slide groove 4.

[0029] In this embodiment, the movable clamp 2 is movably arranged in the slide groove 4 through the positioning slide rods 17 symmetrical on both sides. When the positioning slide rod 17 is lifted to the upper end of the slide groove 4 by the machine needle 3, the telescopic spring 19 pushes the clamping plate 18 to drive the positioning slide rod 17 to slide into the positioning hole 20, thereby helping the movable clamp 2 to fix its position.

[0030] When the movable clamp 2 is fixed in the positioning hole 20, the first screw hole 10 corresponds to the countersunk hole 9, and the second screw hole 11 corresponds to the inner screw hole 8. Then the fastener 12 is rotated to make the fastener 12 drive the threaded rod 7 to rotate. The threaded rod 7 is rotated to the second screw hole 11 to achieve double fixation of the movable clamp 2, thereby increasing the firmness of the needle 3 and avoiding problems such as deviation, wrinkles, and thread breakage when sewing fabrics, which may affect the sewing quality and efficiency.

[0031] like Figure 3 As shown, the outer wall of the syringe 1 is symmetrically provided with a connecting block 21, and the connecting block 21 is arranged below the positioning hole 20. A rotatable arc-shaped movable rod 22 is provided on the connecting block 21, and a thimble 23 is hingedly provided at the movable end of the movable rod 22, and the thimble 23 is movably arranged in the positioning hole 20.

[0032] In this embodiment, when the needle 3 needs to be disassembled, the fastener 12 is rotated to make the fastener 12 drive the threaded rod 7 to rotate in the opposite direction, and the threaded rod 7 is rotated out of the second screw hole 11 to the inner screw hole 8, and at the same time drives the second fixed block 6 away from the first fixed block 5. After the mounting groove 13 is loosened, the needle 3 falls off from the syringe 1, and then the arc-shaped movable rod 22 is pinched to make the ejector pin 23 at the movable end of the movable rod 22 penetrate into the positioning hole 20, and the positioning slide rod 17 in the positioning hole 20 is pushed out to the slide groove 4, and the movable clamp 2 slides along the slide groove 4 to the lower end of the syringe 1.

[0033] like Figure 1 and Figure 7 As shown, a limiting plate 24 is provided at the lower end of the syringe 1 , the limiting plate 24 is fixedly arranged at the lower end of the syringe 1 , and a limiting slot hole 25 is penetrated through the limiting plate 24 .

[0034] like Figure 2 As shown, a flat paddle plate 26 is provided at the upper end of the needle 3 , and the paddle plate 26 is matched with the size of the limiting slot 25 .

[0035] In this embodiment, the length of the paddle plate 26 is greater than the length of the inner cavity of the syringe 1. When the paddle plate 26 at the upper end of the needle 3 is fully inserted into the mounting groove 13 and slides to the upper end of the slide groove 4, the lower end of the paddle plate 26 is just in the limiting slot 25, and then the mounting groove 13 is clamped by the fastener 12, so that the limiting slot 25 and the mounting groove 13 can jointly fix the position of the needle 3 to prevent the needle 3 from tilting and causing deviation, wrinkles, broken threads and other problems when sewing fabrics, thereby avoiding affecting the sewing quality and efficiency.

[0036] like Figure 6As shown, an elastic pad 27 is disposed on the movable clamp 2 , the elastic pad 27 is disposed on the first fixing block 5 , and the elastic pad 27 is disposed on the top of the mounting groove 13 .

[0037] In this embodiment, when the needle 3 is fixed in the mounting groove 13, the top of the needle 3 contacts the elastic pad 27. The elastic pad 27 reserves a certain elastic margin for the needle 3, thereby reducing the various burdens that the needle 3 bears when it contacts the needle plate, the rotary shuttle and the curved needle after piercing the fabric, thereby extending the service life of the needle 3.

[0038] like Figure 5 As shown, a rotating handle 28 is provided at one end of the fastener 12 , and the rotating handle 28 is provided at the outer end of the syringe 1 .

[0039] In this embodiment, the turning handle 28 can facilitate the user to rotate the fastener 12, thereby driving the cross-head 15 to rotate the cross slot 14, driving the threaded rod 7 to rotate, and the threaded rod 7 drives the second fixed block 6 to approach the first fixed block 5, and the mounting groove 13 clamps the paddle plate 26 at the upper end of the needle 3 to fix the needle 3.

[0040] When installing the machine needle 3, the user pinches the lower end of the machine needle 3 and inserts the paddle 26 at the upper end of the machine needle 3 into the syringe 1. When the paddle 26 enters the "X"-shaped installation groove 13, the top of the machine needle 3 contacts the elastic pad 27, and then the machine needle 3 drives the movable clamp 2 to slide along the slide groove 4 to the upper end of the syringe 1. When the positioning slide rod 17 is lifted to the upper end of the slide groove 4 by the machine needle 3, the telescopic spring 19 pushes the clamp 18 to drive the positioning slide rod 17 to slide into the positioning hole 20, which helps the movable clamp 2 to perform preliminary The position is fixed. At this time, the first screw hole 10 corresponds to the countersunk hole 9, and the second screw hole 11 corresponds to the inner screw hole 8. Then the fastener 12 is rotated by turning the handle 28. The fastener 12 drives the threaded rod 7 to rotate through the cooperation of the cross head 15 and the cross groove 14, and drives the second fixed block 6 to approach the first fixed block 5. The mounting groove 13 presses and fixes the needle 3. The mounting groove 13 cooperates with the limiting slot 25 at the lower end of the syringe 1 to jointly limit the position of the needle 3 to prevent the needle 3 from tilting.

[0041] When removing the needle 3, the user rotates the fastener 12 through the turning handle 28 so that the fastener 12 drives the threaded rod 7 to rotate in the opposite direction, and the threaded rod 7 is rotated out of the second screw hole 11 to the inner screw hole 8, and at the same time drives the second fixing block 6 away from the first fixing block 5. After the mounting groove 13 is loosened, the needle 3 falls off from the syringe 1, and then the arc-shaped movable rod 22 is pinched to make the ejector pin 23 at the movable end of the movable rod 22 penetrate into the positioning hole 20, and the positioning slide rod 17 in the positioning hole 20 is pushed out to the slide groove 4, and the movable clamp 2 slides along the slide groove 4 to the positioning plate, which is convenient for the subsequent replacement and installation of the needle 3.

[0042] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] Although embodiments have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit thereof, and the scope of the embodiments is defined by the appended claims and their equivalents.

[0044] The above description of the implementation mode is not restrictive, and the drawings show only one of the implementation modes, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the scope of protection.

Claims

1. A sewing machine needle fixing and installation device, characterized in that: The invention comprises a needle cylinder (1), a movable clamp (2) and a machine needle (3), wherein the inner wall of the needle cylinder (1) is symmetrically provided with a slide groove (4), the movable clamp (2) is arranged in the needle cylinder (1), and the movable clamp (2) is movably arranged on the slide groove (4), and the upper end of the machine needle (3) is mounted on the movable clamp (2); The movable clamp (2) comprises a first fixed block (5), a second fixed block (6) and a threaded rod (7); the first fixed block (5) is provided with an internal screw hole (8); the second fixed block (6) is provided with a countersunk hole (9); the countersunk hole (9) and the internal screw hole (8) are arranged on the same axis; one end of the threaded rod (7) is movably arranged in the countersunk hole (9); the other end of the threaded rod (7) passes through the countersunk hole (9) and is threadedly connected to the internal screw hole (8); the first fixed block (5) and the second fixed block (6) are connected via the threaded rod (7); and the distance between the first fixed block (5) and the second fixed block (6) can be adjusted via the threaded rod (7); The outer wall of the syringe (1) is symmetrically provided with a first screw hole (10) and a second screw hole (11); the first screw hole (10) is arranged close to the countersunk hole (9), and the first screw hole (10) and the countersunk hole (9) are movably connected; the second screw hole (11) is arranged close to the inner screw hole (8), and the second screw hole (11) and the inner screw hole (8) are movably connected; the first screw hole (10) is threadedly connected with a fastener (12); and a mounting groove (13) is provided between the first fixing block (5) and the second fixing block (6).

2. The sewing machine needle fixing and installation device according to claim 1, characterized in that: One end of the threaded rod (7) is provided with a cross groove (14), and the cross groove (14) is arranged in the countersunk hole (9). One end of the fastener (12) is provided with a cross head (15), and the cross head (15) is arranged close to the inner wall of the syringe (1), and the cross head (15) and the cross groove (14) are arranged in a matching manner.

3. The sewing machine needle fixing and installation device according to claim 2, characterized in that: The first fixed block (5) is symmetrically provided with contraction grooves (16) on both sides, and the contraction groove (16) is movably provided with a positioning slide bar (17), and the outer end of the positioning slide bar (17) is movably arranged in the slide groove (4), and a clamping plate (18) is fixedly provided on the positioning slide bar (17), and the clamping plate (18) is arranged in the contraction groove (16), and the clamping plate (18) is movably arranged to fit the side wall of the contraction groove (16), and a telescopic spring (19) is provided on the positioning slide bar (17), and one end of the telescopic spring (19) is arranged against the clamping plate (18), and the other end of the telescopic spring (19) is arranged against the bottom wall of the contraction groove (16).

4. The sewing machine needle fixing and installation device according to claim 3, characterized in that: Positioning holes (20) are symmetrically arranged on the side wall of the syringe (1), and the positioning holes (20) are arranged through the upper end of the slide groove (4).

5. The sewing machine needle fixing and installation device according to claim 4, characterized in that: The outer wall of the syringe (1) is symmetrically provided with a connecting block (21), and the connecting block (21) is arranged below the positioning hole (20). A rotatable arc-shaped movable rod (22) is provided on the connecting block (21), and a movable end of the movable rod (22) is hingedly provided with an ejector pin (23), and the ejector pin (23) is movably arranged in the positioning hole (20).

6. A sewing machine needle fixing and installation device according to claim 5, characterized in that: A limiting plate (24) is provided at the lower end of the needle cylinder (1), the limiting plate (24) is fixedly arranged at the lower end of the needle cylinder (1), and a limiting slot hole (25) is penetrated through the limiting plate (24).

7. The sewing machine needle fixing and installation device according to claim 6, characterized in that: A flat paddle plate (26) is provided at the upper end of the needle (3), and the paddle plate (26) is arranged to match the size of the limiting slot hole (25).

8. The sewing machine needle fixing and installation device according to claim 7, characterized in that: The length of the paddle plate (26) is greater than the length of the inner cavity of the syringe (1).

9. The sewing machine needle fixing and installation device according to claim 1, characterized in that: An elastic pad (27) is provided on the movable clamp (2), the elastic pad (27) is provided on the first fixed block (5), and the elastic pad (27) is provided on the top of the installation groove (13).

10. The sewing machine needle fixing and installation device according to claim 1, characterized in that: A rotating handle (28) is provided at one end of the fastener (12), and the rotating handle (28) is arranged at the outer end of the syringe (1).

Images