Sewing mechanism of sewing machine

Abstract

The utility model discloses a sewing mechanism of a sewing machine, which comprises a sewing mechanism driver, a sewing needle support is arranged inside the sewing mechanism driver, a stand column is arranged inside the sewing mechanism driver at the front end of the sewing needle support, and the bottom of the sewing needle support and the bottom of the stand column extend out of the bottom end of the sewing mechanism driver. A sewing needle is detachably installed in the extending end of the sewing needle support, a presser foot is arranged at the extending end of the stand column, a clamping frame is installed on one side of the bottom of the sewing needle support in a hinged mode, and threaded sections are arranged at the positions, corresponding to the outer surface of the bottom of the sewing needle support, of the clamping frame. By arranging a series of structures, the installation steps are simple, a wrench is not needed to twist the sewing needle for assembly and disassembly, the installation steps are simple and easy to operate, the needle handle is prevented from being damaged when the sewing needle is installed due to improper operation, a pair of scissors is not needed to trim threads, the operation is convenient and fast, and the sewing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machines, in particular to a sewing mechanism of a sewing machine. Background Art

[0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the sewing material, so that one or more layers of sewing material are interwoven or sewn together. It is widely used in the field of clothing production and processing. It mainly includes a placement table, a needle and a rotating shaft structure, and it is used to fix the parts that need to be processed by sewing the threads.

[0003] When changing the needle of the existing sewing mechanism, the old needle needs to be unscrewed with a wrench and rotated along the direction of the needle handle. When installing, the new needle needs to be slowly placed into the needle seat of the sewing machine, and the new needle needs to be rotated and pushed into the needle seat. The operation steps are complicated and require a certain level of proficiency. Improper operation can easily damage the needle handle. Utility Model Content

[0004] The utility model aims to provide a sewing mechanism for a sewing machine, so as to solve the problem that the operation steps of the existing sewing mechanism are complicated and the needle handle is easily damaged when changing the needle.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sewing mechanism of a sewing machine, comprising a sewing mechanism driver, a sewing needle holder is arranged inside the sewing mechanism driver, a column is arranged inside the sewing mechanism driver at the front end of the sewing needle holder, the bottoms of the sewing needle holder and the column extend out of the bottom end of the sewing mechanism driver, a sewing needle is detachably installed inside the extended end of the sewing needle holder, a presser foot is arranged at the extended end of the column, a sewing machine platform is arranged at the bottom end of the presser foot, a clamping frame is hingedly installed on one side of the bottom of the sewing needle holder, threaded sections are arranged at corresponding positions of the clamping frame and the outer surface of the bottom of the sewing needle holder, sewing needle installation grooves are provided on the opposite surfaces of the clamping frame and the sewing needle holder, and fixing nuts are commonly connected at the positions of the two threaded sections.

[0006] Preferably, the upper clamping frame of the two threaded sections and the outer surface of the sewing needle bracket are both provided with limit blocks, the sewing needle is placed in the two sewing needle mounting grooves, and then the fixing nut is spirally sleeved on the outer surface of the threaded section. When the fixing nut rotates and rises to the position of the limit block, it is limited and will not continue to rise, thereby ensuring that the fixing nut can be moved to the predetermined position.

[0007] Preferably, reinforcement grooves are provided at the relative positions of the two sewing needle mounting grooves, and a convex ring is provided at the position of the reinforcement groove on the top outer surface of the sewing needle. When the sewing needle is installed, the convex ring will be stuck inside the reinforcement groove to ensure the tightness of the sewing needle installation and avoid the sewing needle falling off during sewing.

[0008] Preferably, a pad is provided on the top of the sewing machine platform on one side of the presser foot, and two slide grooves are provided on the top of the pad, and an adjusting plate is installed on the top of the presser foot through the slide groove, and a cutting knife is hingedly installed on one side of the adjusting plate near the position of the presser foot, and a baffle is hingedly installed on one side of the front end adjusting plate of the cutter. When sewing is completed, the presser foot presses down the cloth to press the cloth tightly on the sewing machine platform, and the sewing needle is pulled upward by the sewing needle bracket and is above the presser foot. The sewing thread will be straightened, and the adjusting plate is pushed so that the sewing thread is between the cutter and the baffle, and then the cutter and the baffle are pinched to cut the thread.

[0009] Preferably, a spring is provided between the baffle and the cutter near the position of the adjustment plate, so that the cutter and the baffle can be reset and easily retracted without affecting the operation of the sewing mechanism.

[0010] Preferably, a notch matching the cutter is provided on the surface of one end of the baffle near the position of the cutter. When the cutter and the baffle are pinched to cut the sewing thread, one end of the cutter will penetrate into the notch of the baffle to ensure that the sewing thread can be cut.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. When disassembling the sewing needle of the present application, the fixing nut is twisted and removed, and then the clamping frame is flipped open to remove the old sewing needle. When installing the sewing needle, the sewing needle is placed in the sewing needle installation groove opened at the bottom of the sewing needle bracket, and the clamping frame is flipped downward so that the convex ring is stuck in the reinforcement groove, and then the fixing nut is spirally sleeved on the outer surface of the threaded section, and twisted upward to make the clamping frame tightly connected to the bottom of the sewing needle bracket to clamp the sewing needle. The installation steps are simple, and there is no need to use a wrench to twist the sewing needle for loading and unloading. The installation steps are simple and easy to operate, which avoids damage to the needle handle during installation of the sewing needle due to improper operation.

[0013] 2. The present application is provided with a cutter and a baffle. After sewing is completed, the presser foot presses down the fabric to press the fabric tightly on the sewing machine platform. The sewing needle is pulled upward by the sewing needle bracket and is above the presser foot. The sewing thread will be straightened, and the adjustment plate is pushed so that the sewing thread is between the cutter and the baffle. Then, the cutter and the baffle are pinched to cut the thread. There is no need to use scissors to cut the thread. The operation is convenient and the sewing efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 For the utility model Figure 1 A schematic diagram of the structure enlargement in the middle;

[0016] Figure 3 This is a schematic diagram of the structure of a sewing needle bracket of the utility model;

[0017] Figure 4 For the utility model Figure 3 Enlarged schematic diagram of the structure at point B in the middle.

[0018] In the figure: 1. sewing mechanism driver; 2. sewing needle bracket; 3. sewing machine platform; 4. presser foot; 5. column; 6. slide groove; 7. pad; 8. adjustment plate; 9. spring; 10. cutter; 11. baffle; 12. clamping frame; 13. threaded section; 14. sewing needle; 15. sewing needle mounting groove; 16. reinforcement groove; 17. limit block; 18. fixing nut; 19. convex ring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figures 1 to 4 As shown, the present embodiment is a sewing mechanism of a sewing machine, comprising a sewing mechanism driver 1, a sewing needle holder 2 is arranged inside the sewing mechanism driver 1, a column 5 is arranged inside the sewing mechanism driver 1 at the front end of the sewing needle holder 2, the sewing mechanism driver 1 is connected to the sewing machine, and is used to drive the sewing needle holder 2 to perform reciprocating linear motion, the bottoms of the sewing needle holder 2 and the column 5 both extend out of the bottom end of the sewing mechanism driver 1, a sewing needle 14 is detachably installed inside the extended end of the sewing needle holder 2, so as to ensure that the sewing mechanism can perform sewing operation, the column 5 A presser foot 4 is provided at the extended end, which presses the cloth to be sewn to ensure the stability of the cloth during sewing. A sewing machine platform 3 is provided at the bottom end of the presser foot 4. A clamping frame 12 is hingedly installed on one side of the bottom of the sewing needle bracket 2. Threaded sections 13 are provided at corresponding positions of the clamping frame 12 and the bottom outer surface of the sewing needle bracket 2. Sewing needle mounting grooves 15 are provided on the opposite surfaces of the clamping frame 12 and the sewing needle bracket 2. A fixing nut 18 is commonly connected at the positions of the two threaded sections 13. The sewing needle 14 is installed at a predetermined position, which is easy to disassemble and has high convenience.

[0021] Specifically, the upper clamping frame 12 of the two threaded sections 13 and the outer surface of the sewing needle bracket 2 are both provided with limit blocks 17, the sewing needle 14 is placed in the two sewing needle mounting grooves 15, and then the fixing nut 18 is screwed onto the outer surface of the threaded section 13, when the fixing nut 18 rotates and rises to the position of the limit block 17, it is limited and will not continue to rise, thereby ensuring that the fixing nut 18 can move to the predetermined position.

[0022] Furthermore, reinforcement grooves 16 are provided at the relative positions of the two sewing needle mounting grooves 15, and a convex ring 19 is provided at the position of the reinforcement groove 16 on the top outer surface of the sewing needle 14. When the sewing needle 14 is installed, the convex ring 19 will be stuck in the reinforcement groove 16 to ensure the tightness of the installation of the sewing needle 14 and avoid the sewing needle 14 from falling off during sewing.

[0023] Furthermore, a pad 7 is provided on the top of the sewing machine platform 3 on one side of the presser foot 4, and two slide grooves 6 are provided on the top of the pad 7. An adjusting plate 8 is installed on the top of the presser foot 4 through the slide groove 6. A cutter 10 is hingedly installed on one side of the adjusting plate 8 near the position of the presser foot 4, and a baffle 11 is hingedly installed on one side of the front end adjusting plate 8 of the cutter 10. When sewing is completed, the presser foot 4 presses down the cloth to press the cloth tightly on the sewing machine platform 3, and the sewing needle 14 is pulled upward by the sewing needle bracket 2 and is above the presser foot 4. The sewing thread will be straightened, and the adjusting plate 8 is pushed so that the sewing thread is between the cutter 10 and the baffle 11, and then the cutter 10 and the baffle 11 are pinched to cut the thread.

[0024] Furthermore, a spring 9 is provided between the baffle plate 11 and the cutter 10 near the adjusting plate 8, so that the cutter 10 and the baffle plate 11 can be reset and retracted easily without affecting the operation of the sewing mechanism.

[0025] Furthermore, a slot matching the cutter 10 is provided on the surface of one end of the baffle 11 near the position of the cutter 10. When the cutter 10 and the baffle 11 are pinched to cut the sewing thread, one end of the cutter 10 will penetrate into the slot of the baffle 11 to ensure that the sewing thread can be cut.

[0026] The method of using this embodiment is as follows: when the sewing mechanism needs to replace the sewing needle 14, the fixing nut 18 is unscrewed and removed, and then the clamping frame 12 is flipped open to remove the old sewing needle 14, and then the sewing needle 14 is placed in the sewing needle installation groove 15 opened at the bottom of the sewing needle bracket 2, and the clamping frame 12 is flipped downward to make the convex ring 19 stuck in the reinforcement groove 16, and then the fixing nut 18 is spirally sleeved on the outer surface of the threaded section 13, and the clamping frame 12 is twisted upward to make the clamping frame 12 and the bottom of the sewing needle bracket 2 tightly connected to clamp the sewing needle 14. When the sewing machine completes sewing, when sewing is completed, the presser foot 4 presses the cloth down to press the cloth against the sewing machine platform 3, and the sewing needle 14 is pulled upward by the sewing needle bracket 2 to be above the presser foot 4, the sewing thread will be straightened, and the adjusting plate 8 is pushed so that the sewing thread is between the cutter 10 and the baffle 11, and then the cutter 10 and the baffle 11 are pinched to cut the thread.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A sewing mechanism of a sewing machine, comprising a sewing mechanism driver (1), characterized in that: A sewing needle bracket (2) is arranged inside the sewing mechanism driver (1), a column (5) is arranged inside the sewing mechanism driver (1) at the front end of the sewing needle bracket (2), the bottoms of the sewing needle bracket (2) and the column (5) both extend out of the bottom end of the sewing mechanism driver (1), a sewing needle (14) is detachably installed inside the extended end of the sewing needle bracket (2), a presser foot (4) is arranged at the extended end of the column (5), a sewing machine platform (3) is arranged at the bottom end of the presser foot (4), a clamping frame (12) is hingedly installed on one side of the bottom of the sewing needle bracket (2), threaded sections (13) are arranged at corresponding positions on the outer surfaces of the clamping frame (12) and the bottom of the sewing needle bracket (2), sewing needle installation grooves (15) are arranged on the opposite surfaces of the clamping frame (12) and the sewing needle bracket (2), and fixing nuts (18) are commonly connected at the positions of the two threaded sections (13).

2. A sewing mechanism for a sewing machine according to claim 1, characterized in that: The upper clamping frame (12) of the two threaded sections (13) and the outer surface of the sewing needle bracket (2) are both provided with limiting blocks (17).

3. The sewing mechanism of a sewing machine according to claim 1, characterized in that: Reinforcement grooves (16) are arranged at relative positions of the two sewing needle installation grooves (15), and a convex ring (19) is arranged at the position of the reinforcement groove (16) on the top outer surface of the sewing needle (14).

4. The sewing mechanism of a sewing machine according to claim 1, characterized in that: A pad (7) is arranged at the top of the sewing machine platform (3) on one side of the presser foot (4), two slide grooves (6) are arranged at the top of the pad (7), an adjustment plate (8) is installed at the top of the presser foot (4) through the slide groove (6), a cutting knife (10) is hingedly installed on one side of the adjustment plate (8) near the position of the presser foot (4), and a baffle (11) is hingedly installed on one side of the front end adjustment plate (8) of the cutting knife (10).

5. The sewing mechanism of a sewing machine according to claim 4, characterized in that: A spring (9) is provided between the baffle plate (11) and the cutter (10) at a position close to the adjustment plate (8).

6. The sewing mechanism of a sewing machine according to claim 4, characterized in that: A notch matching the cutter (10) is provided on one end surface of the baffle (11) near the position of the cutter (10).

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