Efficient sewing equipment and method for baby carriage push handle leather

Abstract

The invention belongs to the technical field of sewing machinery, and discloses a baby carriage push handle leather efficient sewing device which comprises an operation table, a sliding groove is formed in the operation table, and a mounting plate is movably mounted in the sliding groove. Compared with traditional equipment, through cooperation of a second limiting block, a first spring and a limiting groove, a sewing machine can be conveniently assembled in an operation table, maintenance personnel can easily conduct cleaning, checking and maintaining work, problems can be found and solved in time, stable operation of the equipment is ensured, and the service life is effectively prolonged; along with the change of production tasks, the configuration of the operation table may need to be adjusted or the type of the operation table may need to be replaced, the operation table convenient to assemble can flexibly adapt to the requirements and meet diversified production requirements, finally, the maintenance cost is reduced due to the characteristic of easy assembly, and maintenance personnel can rapidly position problems and repair the problems.

Description

Technical Field

[0001] The invention belongs to the technical field of sewing machinery, and in particular relates to a device and a method for efficiently sewing leather for a baby carriage handle. Background Art

[0002] An efficient sewing device for baby stroller handle leather refers to a special mechanical device designed for sewing leather used for baby stroller handles. This device combines advanced sewing technology and an automated control system to achieve efficient and precise sewing of leather materials. It usually has a precise sewing mechanism, a stable workbench, a flexible adjustment device, and an efficient drive system to ensure stable conveying and precise alignment of leather materials during sewing. In order to improve the high precision during use, the front sewing machine technology generally adopts an integrated molding design, which closely combines the sewing machine with the workbench, significantly enhances the overall stability of the equipment, and effectively reduces the looseness and displacement problems caused by vibration or external force. However, this design also brings some challenges. The integrated molding makes it difficult to disassemble and reassemble the equipment during repair and maintenance, which increases the complexity and cost of maintenance, and sometimes even requires the intervention of professional maintenance personnel, thereby extending the downtime. In addition, this design limits the flexibility of the equipment, making it more difficult to adjust the sewing machine configuration or replace different types of sewing machines. At the same time, the integrated molding design usually requires higher production costs, including material and processing costs, which may lead to a relatively high selling price of the equipment and increase the user's investment cost. Summary of the invention

[0003] The object of the present invention is to provide a device and method for efficiently sewing leather for a baby stroller handle, so as to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: an efficient leather sewing device for a baby stroller handle, comprising an operating table, a slide groove is provided inside the operating table, a mounting plate is movably installed inside the slide groove, and a sewing machine is fixedly installed on the top of the mounting plate; A connecting block is fixedly installed on the front of the mounting plate, a second limiting block is fixedly installed on one end of the connecting block, a limiting groove is provided on the outer side of the sewing machine, and the outer diameter of the limiting groove is greater than the outer diameter of the second limiting block, an armrest is fixedly installed on the bottom of the mounting plate, and a spring 1 is fixedly installed inside the operating table.

[0005] Preferably, a threaded sleeve is fixedly installed at the bottom of the operating table, a second box body is movably installed on the outer surface of the threaded sleeve, a first box body is fixedly installed at the bottom of the second box body, a motor is fixedly installed on the top of the first box body, a first tooth is fixedly installed at the output end of the motor, a threaded rod is sleeved on the internal thread of the threaded sleeve, and one end of the threaded rod passes through the top of the mounting plate, a support plate is fixedly installed at the bottom of the first box body, a second tooth is fixedly installed on one end of the support plate, and the second teeth are meshed with the first teeth.

[0006] Preferably, the sewing machine is movably installed on a limit bar, a sewing needle is fixedly installed on the bottom of the limit bar, a third box is fixedly installed on the inner side of the sewing machine, a first limit block is movably installed on the inside of the limit bar, a pull rod is fixedly installed on one end of the first limit block, and one end of the pull rod passes through the interior of the third box, and a spring 2 is fixedly installed between the third box and the first limit block.

[0007] Preferably, a fixing seat is fixedly installed on the front of the sewing machine, a fixing block is movably installed inside the fixing seat, and a placement box is fixedly installed on the front of the fixing block.

[0008] Preferably, columns are fixedly installed around the bottom of the support plate, and a support base is fixedly installed at the bottom of the columns.

[0009] Preferably, a telescopic rod is fixedly installed between the operating table and the support plate, and the telescopic rod presents four shapes of the same size.

[0010] Preferably, a motor protection cover is fixedly installed on the outer surface of the motor, and a support column is fixedly installed between the motor protection cover and the first box body.

[0011] The beneficial effects of the present invention are as follows: 1. Compared with traditional equipment, the present invention facilitates the assembly of the sewing machine inside the operating table through the cooperation between the second limit block, the spring 1 and the limit groove, so that maintenance personnel can easily carry out cleaning, inspection and maintenance work, timely discover and solve problems, ensure the stable operation of the equipment, and effectively extend the service life. Secondly, with the change of production tasks, it may be necessary to adjust the configuration of the operating table or change the type. The operating table that is easy to assemble can flexibly adapt to these needs and meet diversified production requirements. Finally, the easy assembly feature also reduces maintenance costs. Maintenance personnel can quickly locate problems and repair them, reducing maintenance time and costs caused by equipment failures and improving overall operational efficiency.

[0012] 2. Compared with traditional equipment, the present invention facilitates the adjustment of the height of the operating table and the sewing machine through the cooperation between the threaded rod and the threaded sleeve, which can ensure that the height of the sewing machine and the operating table is perfectly matched, so that the staff can maintain a comfortable and efficient posture when sewing, reduce fatigue movements such as bending over and lowering the head, thereby significantly improving work efficiency. At the same time, this function ensures the stability of the leather material during sewing, avoids sliding or wrinkling, improves sewing accuracy and aesthetics, and ensures product quality. In addition, synchronous height adjustment also enhances the adaptability of the equipment, meets the needs of operators of different heights and operating habits, reduces the difficulty of operation, and improves satisfaction and comfort. This mechanical sewing method is fast, low-cost, and has better quality.

[0013] 3. Compared with the traditional equipment, the present invention facilitates the replacement of sewing needles through the cooperation between the second spring, the first limit block and the limit strip. The rapid replacement of sewing needles reduces downtime and ensures the continuity of the production process. At the same time, the design simplifies the equipment maintenance process, allowing maintenance personnel to easily complete the replacement work, reducing the difficulty of operation and the dependence on professional maintenance personnel, thereby reducing maintenance costs. At the same time, regular replacement of worn sewing needles not only helps to protect other parts of the equipment and extend the life of the equipment, but also reduces downtime caused by equipment failure and reduces production losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the front three-dimensional appearance structure of the present invention; Figure 2 It is a schematic diagram of the exploded structure of the sewing machine of the present invention; Figure 3 It is a schematic diagram of the front cross-sectional structure of the present invention; Figure 4 It is a schematic diagram of a partial cross-sectional structure of a sewing machine of the present invention; Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle; Figure 6 This is a schematic diagram of the three-dimensional appearance structure of the present invention from top view; Figure 7 It is a schematic diagram of the support plate structure of the present invention.

[0015] In the figure: 1. operating table; 2. sewing machine; 3. mounting plate; 4. limiting strip; 5. placing box; 6. connecting block; 7. armrest; 8. telescopic rod; 9. supporting plate; 10. column; 11. supporting base; 12. motor; 13. first box; 14. second box; 15. threaded sleeve; 16. limiting groove; 17. slide groove; 18. spring 1; 19. threaded rod; 20. first tooth; 21. second tooth; 22. sewing needle; 23. first limiting block; 24. third box; 25. pull rod; 26. spring 2; 27. fixing seat; 28. fixing block; 29. ​​motor protection cover; 30. supporting column; 31. second limiting block. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] like Figures 1 to 7 As shown, an embodiment of the present invention provides a baby stroller handle leather efficient sewing device, comprising an operating table 1, a slide groove 17 is provided inside the operating table 1, a mounting plate 3 is movably installed inside the slide groove 17, and a sewing machine 2 is fixedly installed on the top of the mounting plate 3; A connecting block 6 is fixedly installed on the front of the mounting plate 3, a second limit block 31 is fixedly installed on one end of the connecting block 6, a limit groove 16 is provided on the outer side of the sewing machine 2, and the outer diameter value of the limit groove 16 is greater than the outer diameter value of the second limit block 31, an armrest 7 is fixedly installed on the bottom of the mounting plate 3, and a spring 18 is fixedly installed inside the operating table 1.

[0018] The staff needs to assemble the sewing machine 2 inside the operating table 1, first fix the sewing machine 2 on the top of the mounting plate 3, hold the armrest 7, align the mounting plate 3 with the inside of the slide groove 17 through the armrest 7, and then slowly push the mounting plate 3 into the inside of the slide groove 17, and drive the connecting block 6 and the second limit block 31 to move synchronously through the mounting plate 3, and then squeeze the spring 18 inside the slide groove 17 through the mounting plate 3, so that the second limit block 31 quickly enters the inside of the limit groove 16 through the connecting block 6 and the mounting plate 3, and the second limit block 31 is limited and fixed by the limit groove 16, and then the mounting plate 3 is squeezed by the spring 18 so that the second limit block 31 is completely stuck in the inside of the limit groove 16, thereby completing the assembly of the sewing machine 2.

[0019] The sewing machine 2 needs to be assembled inside the operating table 1. First, the sewing machine 2 is fixedly installed on the top of the mounting plate 3. By holding the handrail 7, the mounting plate 3 is aligned with the inside of the slide groove 17 through the handrail 7, and then the mounting plate 3 is slowly pushed into the inside of the slide groove 17. The mounting plate 3 drives the connecting block 6 and the second limit block 31 to move synchronously. The spring 18 is squeezed inside the slide groove 17 by the mounting plate 3, so that the second limit block 31 quickly enters the inside of the limit groove 16 through the connecting block 6 and the mounting plate 3, and the second limit block 31 is limited and fixed by the limit groove 16. Compared with the traditional device, the device uses the second limit block 3 1. The cooperation between the spring 18 and the limit groove 16 makes it easy to assemble the sewing machine 2 inside the operating table 1, so that maintenance personnel can easily carry out cleaning, inspection and maintenance work, timely discover and solve problems, ensure stable operation of the equipment, and effectively extend the service life. Secondly, as the production tasks change, it may be necessary to adjust the configuration of the operating table 1 or change the type. The easy-to-assemble operating table 1 can flexibly adapt to these needs and meet diversified production requirements. Finally, the easy-to-assemble feature also reduces maintenance costs. Maintenance personnel can quickly locate problems and repair them, reducing maintenance time and costs caused by equipment failures and improving overall operational efficiency.

[0020] Among them, a threaded sleeve 15 is fixedly installed at the bottom of the operating table 1, and a second box body 14 is movably installed on the outer surface of the threaded sleeve 15. The first box body 13 is fixedly installed at the bottom of the second box body 14, and a motor 12 is fixedly installed on the top of the first box body 13. The output end of the motor 12 is fixedly installed with a first tooth 20, and the internal thread of the threaded sleeve 15 is sleeved with a threaded rod 19, and one end of the threaded rod 19 passes through the top of the mounting plate 3. A support plate 9 is fixedly installed at the bottom of the first box body 13, and a second tooth 21 is fixedly installed on one end of the support plate 9, and the second tooth 21 is meshed with the first tooth 20.

[0021] The staff needs to adjust the height of the operating table 1 and the sewing machine 2 according to their own height, turn on the motor 12, and drive the first tooth 20 to rotate inside the first box 13 through the motor 12, and the first tooth 20 drives the second tooth 21 to rotate through the tooth meshing between the first tooth 20 and the second tooth 21, and the threaded rod 19 is driven by the second tooth 21 to rotate inside the threaded sleeve 15, so that the threaded sleeve 15 is slowly raised inside the second box 14, and then the operating table 1 is slowly raised through the threaded sleeve 15, and the sewing machine 2 is slowly raised through the operating table 1. When the operating table 1 and the sewing machine 2 are suitable for the height of the staff, the motor 12 stops rotating at this time, thereby completing the height adjustment of the operating table 1 and the sewing machine 2.

[0022] The height of the operating table 1 and the sewing machine 2 needs to be adjusted according to one's own height, the motor 12 is turned on, and the first tooth 20 is driven by the motor 12 to rotate inside the first box 13, and the first tooth 20 is driven by the second tooth 21 to rotate through the tooth meshing between the first tooth 20 and the second tooth 21, and the threaded rod 19 is driven by the second tooth 21 to rotate inside the threaded sleeve 15, so that the threaded sleeve 15 is slowly raised inside the second box 14, and the operating table 1 is slowly raised through the threaded sleeve 15, and the sewing machine 2 is slowly raised through the operating table 1. When the operating table 1 and the sewing machine 2 are suitable for the height of the staff, the motor 12 stops rotating at this time, which is different from the traditional device. Compared with the traditional equipment, the equipment facilitates the adjustment of the height of the operating table 1 and the sewing machine 2 through the cooperation between the threaded rod 19 and the threaded sleeve 15, so as to ensure that the height of the sewing machine 2 is perfectly matched with the operating table 1, so that the staff can maintain a comfortable and efficient posture when sewing, reduce fatigue actions such as bending over and lowering the head, thereby significantly improving work efficiency. At the same time, this function ensures the stability of the leather material during sewing, avoids sliding or wrinkling, improves sewing accuracy and aesthetics, and ensures product quality. In addition, the synchronous height adjustment also enhances the adaptability of the equipment, meets the needs of operators of different heights and operating habits, reduces the difficulty of operation, and improves satisfaction and comfort. This mechanical sewing method is fast, low-cost and of better quality.

[0023] Among them, the sewing machine 2 is movably installed on the limit strip 4, a sewing needle 22 is fixedly installed at the bottom of the limit strip 4, a third box body 24 is fixedly installed on the inner side of the sewing machine 2, a first limit block 23 is movably installed inside the limit strip 4, a pull rod 25 is fixedly installed at one end of the first limit block 23, and one end of the pull rod 25 passes through the interior of the third box body 24, and a spring 26 is fixedly installed between the third box body 24 and the first limit block 23.

[0024] The staff needs to replace the sewing needle 22 inside the sewing machine 2. By holding the third box 24, the first limit block 23 is pulled inside the limit strip 4 through the pull rod 25, and the spring 26 is squeezed through the first limit block 23, so that the first limit block 23 enters the third box 24 and the sewing machine 2. Now the first limit block 23 releases the restriction on the limit strip 4. Now hold the limit strip 4 and slowly remove the sewing needle 22 at the bottom of the limit strip 4. At the same time, the new sewing needle 22 needs to be replaced inside the sewing machine 2. Now push the limit strip 4 and the sewing needle 22 into the sewing machine 2. When the limit strip 4 completely enters the interior of the sewing machine 2, release the pull rod 25, and squeeze the first limit block 23 through the spring 26, so that the first limit block 23 quickly enters the interior of the limit strip 4, thereby completing the replacement of the limit strip 4.

[0025] The sewing needle 22 inside the sewing machine 2 needs to be replaced. By holding the third box 24, the first limit block 23 is pulled inside the limit bar 4 through the pull rod 25, and the spring 26 is squeezed by the first limit block 23, so that the first limit block 23 enters the third box 24 and the interior of the sewing machine 2. Now hold the limit bar 4 and slowly remove the sewing needle 22 at the bottom of the limit bar 4. At the same time, a new sewing needle 22 needs to be replaced inside the sewing machine 2. Now push the limit bar 4 and the sewing needle 22 into the interior of the sewing machine 2, release the pull rod 25, and squeeze the first limit block 23 through the spring 26. Extrusion, compared with traditional equipment, this equipment facilitates the replacement of the sewing needle 22 through the cooperation between the spring 26, the first limit block 23, and the limit strip 4. The rapid replacement of the sewing needle 22 reduces downtime and ensures the continuity of the production process. At the same time, the design simplifies the equipment maintenance process, allowing maintenance personnel to easily complete the replacement work, reducing the difficulty of operation and the dependence on professional maintenance personnel, thereby reducing maintenance costs. At the same time, regular replacement of worn sewing needles not only helps to protect other parts of the equipment and extend the life of the equipment, but also reduces downtime caused by equipment failure and reduces production losses.

[0026] A fixing seat 27 is fixedly installed on the front of the sewing machine 2 , a fixing block 28 is movably installed inside the fixing seat 27 , and a placement box 5 is fixedly installed on the front of the fixing block 28 .

[0027] By holding the placement box 5, the fixing block 28 is slowly placed into the fixing seat 27, and the fixing seat 27 is used to limit and fix the fixing block 28. By adding the placement box 5, it is convenient for the staff to take and place the sewing items in the placement box 5, thereby improving the work efficiency of the staff.

[0028] Among them, columns 10 are fixedly installed around the bottom of the support plate 9, and a support base 11 is fixedly installed at the bottom of the column 10.

[0029] Through the cooperation between the column 10 and the support base 11, it is convenient to support the support plate 9, and then the operating table 1 is supported through the support plate 9, which ensures the stability of the support plate 9 and the operating table 1 during use, and improves the stability of the operating table 1 and the support plate 9 during use.

[0030] Among them, a telescopic rod 8 is fixedly installed between the operating table 1 and the supporting plate 9, and the telescopic rod 8 presents four shapes of the same size.

[0031] Since the telescopic rods 8 are in four shapes of the same size between the operating table 1 and the support plate 9, the telescopic rods 8 can provide stable support during the up and down movement of the operating table 1 and the sewing machine 2, thereby ensuring the stability of the up and down movement of the sewing machine 2 and the operating table 1 and improving the use efficiency of the sewing machine 2.

[0032] A motor protection cover 29 is fixedly installed on the outer surface of the motor 12 , and a support column 30 is fixedly installed between the motor protection cover 29 and the first box body 13 .

[0033] Through the cooperation between the support column 30 and the motor protection cover 29, it is convenient to provide stable support for the motor 12, reduce the shaking of the motor 12 during use, ensure the stability of the motor 12 during use, and extend the service life of the motor 12.

[0034] The specific steps of using this method are as follows: S1: First, firmly install the component sewing machine 2 on the top of the component installation plate 3, and then slowly push the sewing machine 2 into the internal slide groove 17 through the handrail 7, and then slowly push the component installation plate 3, driving the connecting block 6 and the second limit block 31 to move synchronously. As the component installation plate 3 moves deeper, the component spring 18 is squeezed, so that the second limit block 31 of the component quickly enters the cavity limit groove 16 and is fixed by it. Finally, under continuous squeezing, the second limit block 31 is firmly stuck in the cavity limit groove 16, indicating that the assembly work of the component sewing machine 2 is successfully completed; S2: Then, according to the height of the user, the motor 12 is turned on, and the motor 12 drives the first tooth 20 to rotate in the first box 13, and the second tooth 21 is driven to rotate by the meshing of the teeth, so that the threaded rod 19 rotates in the threaded sleeve 15, so that the threaded sleeve 15 and the operating table 1 and sewing machine 2 carried by the threaded sleeve 15 slowly rise in the second box 14, and the motor 12 is stopped when the height reaches a suitable height, and the height adjustment is completed; S3: The staff member holds the third box 24 of the operating member and uses the pull rod 25 to pull the first limit block 23 inside the component limit strip 4. As the first limit block 23 squeezes the limit spring 26, the first limit block 23 of the unlocking lever smoothly enters the third box 24 and the main sewing machine 2. At this time, the first limit block 23 releases the fixed restriction on the limit strip 4. Then, the staff member holds the limit strip 4 and slowly and steadily removes the sewing needle 22 at the bottom thereof; S4: Put a new sewing needle 22 into the interior of the sewing machine 2; push the limiting strip 4 and the new sewing needle 22 into the interior of the sewing machine 2 together; S5: Now when the limit strip 4 completely enters the interior of the sewing machine 2, release the pull rod 25, and squeeze the first limit block 23 through the spring 26, so that the first limit block 23 quickly enters the interior of the limit strip 4, completing the fixation of the limit strip 4 and the new sewing needle 22.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. 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.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An efficient sewing device for baby stroller handle leather, comprising an operating table (1), characterized in that: A slide groove (17) is provided inside the operating table (1), a mounting plate (3) is movably mounted inside the slide groove (17), and a sewing machine (2) is fixedly mounted on the top of the mounting plate (3); A connecting block (6) is fixedly mounted on the front of the mounting plate (3), a second limiting block (31) is fixedly mounted on one end of the connecting block (6), a limiting groove (16) is provided on the outer side of the sewing machine (2), and the outer diameter of the limiting groove (16) is greater than the outer diameter of the second limiting block (31), an armrest (7) is fixedly mounted on the bottom of the mounting plate (3), and a spring 1 (18) is fixedly mounted inside the operating table (1).

2. The high-efficiency sewing equipment for baby stroller handle leather according to claim 1, characterized in that: A threaded sleeve (15) is fixedly mounted on the bottom of the operating table (1), a second box (14) is movably mounted on the outer surface of the threaded sleeve (15), a first box (13) is fixedly mounted on the bottom of the second box (14), a motor (12) is fixedly mounted on the top of the first box (13), a first tooth (20) is fixedly mounted on the output end of the motor (12), a threaded rod (19) is sleeved on the inner thread of the threaded sleeve (15), and one end of the threaded rod (19) passes through the top of the mounting plate (3), a support plate (9) is fixedly mounted on the bottom of the first box (13), a second tooth (21) is fixedly mounted on one end of the support plate (9), and the second tooth (21) is meshed with the first tooth (20).

3. The high-efficiency sewing equipment for baby stroller handle leather according to claim 2, characterized in that: The interior of the sewing machine (2) is movably mounted on a limit bar (4), a sewing needle (22) is fixedly mounted on the bottom of the limit bar (4), a third box (24) is fixedly mounted on the inner side of the sewing machine (2), a first limit block (23) is movably mounted inside the limit bar (4), a pull rod (25) is fixedly mounted on one end of the first limit block (23), and one end of the pull rod (25) passes through the interior of the third box (24), and a second spring (26) is fixedly mounted between the third box (24) and the first limit block (23).

4. The high-efficiency sewing equipment for baby stroller handle leather according to claim 3, characterized in that: A fixing seat (27) is fixedly mounted on the front of the sewing machine (2), a fixing block (28) is movably mounted inside the fixing seat (27), and a placement box (5) is fixedly mounted on the front of the fixing block (28).

5. The high-efficiency sewing equipment for baby stroller handle leather according to claim 4, characterized in that: Vertical columns (10) are fixedly mounted around the bottom of the support plate (9), and a support base (11) is fixedly mounted on the bottom of the vertical columns (10).

6. The high-efficiency sewing equipment for baby stroller handle leather according to claim 5, characterized in that: A telescopic rod (8) is fixedly installed between the operating table (1) and the support plate (9), and the telescopic rod (8) presents four shapes of the same size.

7. The high-efficiency sewing equipment for baby stroller handle leather according to claim 2, characterized in that: A motor protection cover (29) is fixedly mounted on the outer surface of the motor (12), and a support column (30) is fixedly mounted between the motor protection cover (29) and the first box body (13).

8. The method for using the child stroller handle leather high-efficiency sewing device according to any one of claims 1 to 7, characterized in that: The specific steps of using this method are as follows: S1: First, firmly install the component sewing machine (2) on the top of the component installation plate (3), then use the handrail (7) to push the sewing machine (2) into the structural slide groove (17), and then slowly push it into the component installation plate (3), driving the connecting block (6) and the second limit block (31) to move synchronously. As the component installation plate (3) moves deeper, the component spring 1 (18) squeezes the component, prompting the second limit block (31) of the component to quickly enter the cavity limit groove (16) and be fixed by it. Finally, under continuous squeezing, the second limit block (31) is firmly stuck in the cavity limit groove (16), indicating that the assembly work of the component sewing machine (2) is successfully completed; S2: Then, according to the height of the user, the motor (12) is turned on, and the motor (12) drives the first tooth (20) to rotate in the first housing (13), and the second tooth (21) is driven to rotate by the meshing of the teeth, thereby causing the threaded rod (19) to rotate in the threaded sleeve (15), so that the threaded sleeve (15) and the operating table (1) and sewing machine (2) carried thereon are slowly raised in the second housing (14). When the height reaches a suitable level, the motor (12) is stopped, and the height adjustment is completed; S3: The staff member holds the third box body (24) of the operating member and uses the pull rod (25) to pull the first limit block (23) inside the component limit strip (4). As the first limit block (23) squeezes the limit spring 2 (26), the first limit block (23) of the unlocking rod smoothly enters the third box body (24) and the main sewing machine (2). At this time, the first limit block (23) releases the fixed restriction on the limit strip (4). Subsequently, the staff member holds the limit strip (4) and slowly and steadily removes the sewing needle (22) at the bottom thereof; S4: inserting a new sewing needle (22) into the interior of the sewing machine (2); pushing the limiting strip (4) and the new sewing needle (22) together into the interior of the sewing machine (2); S5: Now, when the limit strip (4) is completely inserted into the interior of the sewing machine (2), the pull rod (25) is released, and the first limit block (23) is squeezed by the second spring (26), so that the first limit block (23) quickly enters the interior of the limit strip (4), thereby completing the fixation of the limit strip (4) and the new sewing needle (22).

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